close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2012156953

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2012156953
A speaker terminal mounting structure and a speaker unit capable of suppressing disconnection
of a lead due to movement of the terminal by stably fixing the terminal to a slit. A speaker
terminal mounting structure includes a frame (11) having a slit (22), and a terminal (21)
supported by the frame (11) by being inserted into the slit (22). The slit 22 contacts at least two
of the one side support portions 22 f and the other surface 21 s when viewed from the direction
ID in which the terminal 21 is inserted, and is positioned at least inside the area 24 sandwiched
by the two one side support portions 22 f. It has a shape including one other side support 22s.
An imaginary second straight line L2 extending parallel to the first straight line L1 at a distance
T2 smaller than the thickness T1 of the terminal 21 in the first direction D1 with respect to the
virtual first straight line L1 connecting the two one-side support portions 22f At the time, the
other side support portion 22s is located on the second direction D2 side from the second
straight line L2. [Selected figure] Figure 8
Speaker terminal mounting structure and speaker unit
[0001]
The present invention relates to a speaker terminal mounting structure and a speaker unit, and
more particularly to a speaker terminal mounting structure in which a terminal is inserted into a
slit of a frame and a speaker unit including the same.
[0002]
A speaker is mounted in a portable information terminal such as a mobile phone, a smartphone, a
12-04-2019
1
PDA (Personal Digital Assistants), a game machine, a personal computer, and the like.
In this speaker, terminals of the speaker unit are electrically connected to the set-side board
(device-side circuit board). The terminal and the voice coil of the speaker unit are electrically
connected by a lead wire. Thereby, the speaker unit and the set-side substrate are electrically
connected.
[0003]
Conventionally, a speaker having a structure in which this terminal is inserted into a slit of a
frame has been proposed. As a speaker of this type, for example, in Japanese Patent Application
Laid-Open No. 2005-136708 (Patent Document 1), one inner peripheral edge portion of the
opening of the spring terminal is engaged with the hooked portion of the L-shaped hooked
protrusion of the frame. A speaker device has been proposed in which the spring terminal is fixed
to the frame by inserting the L-shaped insertion portion of the spring terminal into the hole of
the frame.
[0004]
Also, for example, in Japanese Patent Application Laid-Open No. 2005-260775 (Patent
Document 2), a plurality of bent pieces of a metal spring terminal are press-fit into a plurality of
mounting holes on a resin frame to make the metal spring. There has been proposed a speaker
device in which a terminal is fixed to a resin frame.
[0005]
JP, 2005-136708, A JP, 2005-260775, A
[0006]
In the speaker device described in the above-mentioned JP 2005-136708 A, the opening of the
spring terminal is inserted into the hooking portion of the L-shaped hook-shaped projection of
the frame, and the L of the spring terminal is inserted into the hole of the frame. A letter shaped
insert is inserted.
12-04-2019
2
Therefore, in order to attach the spring terminal to the frame, the hole of the frame needs to be
formed so that the dimension of the L-shaped insertion portion of the spring terminal is larger.
For this reason, after attaching a spring terminal to a frame, the insertion part of a spring
terminal will move with respect to the hole of a frame. Therefore, the position of the spring
terminal is not stable.
[0007]
In the speaker device described in the above-mentioned JP-A-2005-260775, since the plurality of
bent pieces of the metal spring terminal are set non-parallel, the mounting hole of the resin
frame is larger in size than the bent pieces. Needs to be formed. For this reason, the bending
piece of a metal spring terminal will move with respect to the attachment hole of a resin frame
after attachment. Therefore, the position of the metal spring terminal is not stable.
[0008]
As described above, when the position of the spring terminal is not stable, there is a risk that the
lead wire electrically connected to the spring terminal may be disconnected due to the movement
of the spring terminal.
[0009]
The present invention has been made in view of the above problems, and its object is to stably fix
a terminal in a slit, thereby preventing the disconnection of a lead due to the movement of the
terminal, and a speaker terminal attachment structure and It is providing a speaker unit.
[0010]
The speaker terminal mounting structure of the present invention includes a frame having a slit,
and a terminal supported by the frame by being inserted into the slit.
The slit is in contact with the two one-side support portions abutting on one surface of the
terminal and the other surface facing the one surface of the terminal and is sandwiched between
the two one-side support portions as viewed from the direction in which the terminal is inserted.
12-04-2019
3
And at least one other side support portion located inside the area.
An imaginary second straight line extending parallel to the first straight line at a distance smaller
than the thickness of the terminal in the first direction from one surface to the other surface with
respect to the first imaginary straight line connecting the two one-side support parts Sometimes,
the other side support portion is located on the second direction side opposite to the first
direction from the second straight line.
[0011]
According to the speaker terminal mounting structure of the present invention, a virtual first line
extending parallel to the first straight line at a distance smaller than the thickness of the terminal
with respect to the first straight line connecting the two one-side support parts. When assuming
two straight lines, the other side support portion is located on the second direction side from the
second straight line. Therefore, the terminal can be supported in a curved state by the two oneside support portions and the other-side support portion. Therefore, the terminal can be urged
against the slit by the elastic force of the terminal. Thereby, the terminal can be stably fixed to
the slit. By stably fixing the terminal to the slit, disconnection of the lead wire due to movement
of the terminal can be suppressed.
[0012]
Preferably, in the above speaker terminal attachment structure, the other side support portion is
positioned in the first direction than the first straight line. Therefore, it is possible to reduce the
degree of bending of the terminal curved by the two one-side support portions and the other-side
support portion. Thereby, the insertion of the terminal into the slit can be facilitated.
[0013]
Preferably, in the above speaker terminal attachment structure, the other side support portion is
located in the second direction than the first straight line. Therefore, the terminal can be
supported in a state of being greatly curved by the two one-side support portions and the otherside support portion. Therefore, the terminal can be strongly urged against the slit by the elastic
force of the terminal. Thereby, the terminal can be strongly fixed to the slit.
12-04-2019
4
[0014]
Preferably, in the above speaker terminal mounting structure, the at least one other side support
portion is a single other side support portion. Therefore, the configuration of the slit can be
simplified.
[0015]
Preferably, in the above speaker terminal mounting structure, the at least one other side support
portion is the two other side support portions. Therefore, the terminal can be supported at four
or more points. The terminal can be sandwiched between the one side support portion and the
other side support portion on both the one end side and the other end side of the terminal.
Thereby, the terminal can be more stably fixed to the slit.
[0016]
Preferably, in the above-described speaker terminal mounting structure, the terminal has a
projection that can be engaged with the frame in the direction in which the terminal is inserted
into the slit. Therefore, by engaging the projection with the frame, the terminal can be positioned
in the direction in which the terminal is inserted into the slit. Thus, the terminal can be stably
fixed to the slit in the direction in which the terminal is inserted into the slit.
[0017]
Preferably, in the above-described speaker terminal attachment structure, the frame has a recess
capable of receiving the protrusion. Therefore, by receiving the projection in the recess, the
terminal can be positioned more stably in the direction in which the terminal is inserted into the
slit. Thus, the terminal can be stably fixed to the slit in the direction in which the terminal is
inserted into the slit.
[0018]
12-04-2019
5
Preferably, in the above speaker terminal mounting structure, the terminal is a spring terminal.
Since the terminal can be stably fixed to the slit, the position of the contact of the spring terminal
can be stabilized. Therefore, it is possible to suppress the contact deviation between the terminal
and the substrate side terminal of the set side substrate. As a result, it is possible to suppress the
conduction failure due to the contact misalignment. Further, since the terminal can be stably
fixed to the slit, the fulcrum of the spring terminal can be stabilized when a load acts on the
spring terminal. Therefore, the performance of the spring terminal can be stabilized.
[0019]
The speaker unit of the present invention includes the above-described speaker terminal
mounting structure, and the terminal is electrically connected to the voice coil by being
electrically connected to the lead wire. Since the terminal can be stably fixed to the slit by the
above-described speaker terminal mounting structure, disconnection of the lead due to
movement of the terminal can be suppressed.
[0020]
As described above, according to the speaker unit mounting structure and the speaker unit of the
present invention, disconnection of the lead wire due to movement of the terminal can be
suppressed by stably fixing the terminal to the slit.
[0021]
It is a schematic top view of the speaker unit in Embodiment 1 of this invention.
It is a schematic sectional drawing in alignment with the II-II line of FIG. It is a schematic
fragmentary sectional view in alignment with the III-III line of FIG. It is a schematic fragmentary
sectional view in alignment with the IV-IV line of FIG. It is a schematic side view of the speaker
unit in Embodiment 1 of this invention. It is a schematic bottom view of the speaker unit in
Embodiment 1 of this invention. It is a schematic top view which shows the engagement state of
the slit and terminal in P1 part of FIG. FIG. 8 is a schematic partial enlarged top view showing a
portion P2 of FIG. 7; It is a schematic top view which shows the shape of the slit in P1 part of FIG.
It is a schematic fragmentary sectional view corresponding to the section position of Drawing 4
12-04-2019
6
showing the state before a terminal is inserted in a slit. FIG. 5 is a schematic cross-sectional view
corresponding to the cross-sectional position of FIG. 4 showing a state after the terminal has
been inserted into the slit. FIG. 9 is a schematic partial enlarged top view corresponding to the
plane position of FIG. 8 showing a first modification of the first embodiment of the present
invention. FIG. 9 is a schematic partial enlarged top view corresponding to the plane position of
FIG. 8 showing a modified example 2 of the first embodiment of the present invention. FIG. 19 is
a schematic partial enlarged top view corresponding to the plane position of FIG. 8 showing a
third modification of the first embodiment of the present invention. It is a schematic side view
corresponding to the plane position of FIG. 5 which shows the modification 4 of Embodiment 1
of this invention. It is a schematic top view which shows the engagement state of the slit and
terminal in the comparative example 1, Comprising: It is a schematic top view corresponding to
the plane position of FIG. It is a schematic fragmentary sectional view which shows the state
which a terminal moves to the width direction of the slit in the comparative example 1,
Comprising: It is a schematic fragmentary sectional view corresponding to the cross-sectional
position of FIG. It is a schematic fragmentary sectional view which shows the state which a
terminal rotates in the inside of the slit in the comparative example 1, Comprising: It is a
schematic fragmentary sectional view corresponding to the cross-sectional position of FIG. It is a
schematic fragmentary sectional view which shows the engagement state of the slit and terminal
in Comparative Example 1, Comprising: It is a schematic fragmentary sectional view
corresponding to the cross-sectional position of FIG. It is a schematic fragmentary sectional view
which shows the state which a terminal moves to the depth direction of the slit in the
comparative example 1, Comprising: It is a schematic fragmentary sectional view corresponding
to the cross-sectional position of FIG. FIG. 9 is a schematic partial enlarged top view showing an
engaged state of a slit and a terminal in Comparative Example 2, and is a schematic enlarged top
view corresponding to the plane position of FIG. 8. It is a schematic perspective view of the
portable information terminal in Embodiment 2 of this invention. It is a schematic perspective
view which shows the folded state of the portable information terminal in Embodiment 2 of this
invention.
[0022]
Hereinafter, embodiments of the present invention will be described based on the drawings. First
Embodiment First, a configuration of a speaker unit according to a first embodiment of the
present invention will be described.
[0023]
1 and 2, speaker unit 10 includes frame 11, diaphragm 12, frame cover 13, voice coil 14, magnet
15, plate 16, yoke 17, and lead wire 18. , And 21 mainly.
12-04-2019
7
[0024]
The frame 11 mainly has a support portion 11 a, an inner circumferential portion 11 b, an outer
circumferential portion 11 c, a terminal attachment portion 11 d, and a slit 22.
The frame 11 is provided with a back hole 11 e. The support portion 11a is provided on the
upper surface of the outer peripheral portion 11c. The outer peripheral end portion of the
diaphragm 12 is supported by the support portion 11 a, whereby the diaphragm 12 is vibratably
supported by the frame 11. A step may be provided between the support portion 11a and the
inner circumferential portion 11b.
[0025]
Two slits 22 are provided in the outer peripheral portion 11c. Each of the two slits 22 is formed
to penetrate the terminal mounting portion 11 d in the direction in which the frame 11 and the
frame cover 13 overlap. A terminal 21 is supported by each of the two slits 22. The two
terminals 21 are supported by the frame 11 by being inserted into the slits 22 respectively.
Terminal 21 is formed, for example, by press-forming a metal plate. Terminal 21 is formed of, for
example, stainless steel, titanium copper or the like. The thickness of the terminal 21 is, for
example, 0.1 mm or more and 0.2 mm or less. For example, a spring terminal can be used as the
terminal 21.
[0026]
Referring to FIGS. 3 and 4, terminal 21 mainly includes a protrusion 21a, a protrusion 21b, an
insertion portion 21c, and a bent portion 21d. The protrusion 21 a is provided to protrude from
the frame 11. The protrusion 21 b is provided to be engageable with the frame 11 in the
direction ID in which the terminal 21 is inserted into the slit 22. The terminal mounting portion
11 d of the frame 11 is provided with a recess 23 capable of receiving the protrusion 21 b. In the
present embodiment, the protrusion 21 b is received in the recess 23. The insertion portion 21 c
is inserted into the slit 22. The bent portion 21d is bent along the lower surface of the terminal
mounting portion 11d.
12-04-2019
8
[0027]
Referring to FIG. 5, the speaker unit 10 can contact the terminal 21 via the terminal 21 by
contacting the terminal 21 of the set-side substrate (device-side circuit board) 50 with the
protrusion 21 a of the terminal 21 being elastically deformed. It is configured to be electrically
connected to the set side substrate 50.
[0028]
Referring again to FIGS. 1 and 2, the frame 11 is configured to support the yoke 17 in which the
magnet 15 is disposed at the inner circumferential portion 11 b.
The yoke 17 is supported by the frame 11 so as to be exposed from the back surface hole 11 e.
The outer peripheral portion 11c is continuously formed on the outer peripheral side of the
support portion 11a. The frame 11 is formed in a track shape, for example, in a plan view. Here,
the track shape is a shape formed by connecting both ends of two straight lines by an arc. Frame
11 is formed of, for example, a resin. The frame 11 may have a portion formed of metal.
[0029]
The diaphragm 12 is formed of a thin plate so as to be able to vibrate in the vertical direction
(direction of arrow A in FIG. 2). The diaphragm 12 has a central vibration portion 12a, a voice
coil attachment portion 12b, an edge portion 12c, and a frame attachment portion 12d. The
central vibrating portion 12 a is provided at the center of the diaphragm 12. The central
vibrating portion 12 a is formed in an arc shape that is convex on the opposite side to the
magnet 15 in a cross sectional view of the diaphragm 12 in the radial direction D.
[0030]
The voice coil attachment portion 12b is provided on the outer peripheral side of the central
vibrating portion 12a. The voice coil mounting portion 12b is provided between the central
vibrating portion 12a and the edge portion 12c. The voice coil mounting portion 12b is annularly
provided so as to surround the central vibrating portion 12a. The voice coil attachment portion
12 b is for attaching the voice coil 14. The voice coil attachment portion 12 b is formed to be flat
12-04-2019
9
in a cross sectional view in the radial direction D of the diaphragm 12.
[0031]
The edge portion 12c is provided on the outer peripheral side of the voice coil attachment
portion 12b. The frame attachment portion 12d is provided on the outer peripheral side of the
edge portion 12c. The frame attachment portion 12 d is attached to the support portion 11 a of
the frame 11. The frame attachment portion 12d is annularly provided to surround the edge
portion 12c. The frame attachment portion 12 d is formed to be flat in a cross sectional view in
the radial direction D of the diaphragm 12.
[0032]
The diaphragm 12 is formed in a track shape, for example, in a plan view. The diaphragm 12 is
made of, for example, PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PEI
(polyetherimide) or the like.
[0033]
The voice coil 14 is attached to the diaphragm 12 by fixing the upper surface of the voice coil 14
to the voice coil attachment portion 12 b of the diaphragm 12. Voice coil 14 is formed, for
example, in a track shape. Lead wires 18 are electrically connected to the voice coil 14.
[0034]
The magnet 15 is disposed on the inner peripheral side of the voice coil 14 (inside magnet type)
at an interval from the inner peripheral surface of the voice coil 14. The magnet 15 is disposed to
face the voice coil 14. The yoke 17 is spaced apart from the outer peripheral surface of the voice
coil 14 by a portion (outer peripheral side portion) disposed on the outer peripheral side of the
voice coil 14 and a portion disposed below the voice coil 14 and the magnet 15 (lower portion
And.
12-04-2019
10
[0035]
The yoke 17 is fixed by fitting with the inner peripheral portion 11 b of the frame 11 on the
outer peripheral surface of the outer peripheral side portion. The lower portion of the yoke 17 is
spaced apart from the lower surface of the voice coil 14. A magnet 15 is disposed at the center of
the lower portion of the yoke 17. A plate 16 is disposed on the top surface of the magnet 15. A
magnetic circuit is constituted by the magnet 15, the plate 16 and the yoke 17.
[0036]
Referring to FIGS. 2 and 6, terminals 21 are joined to lead wires 18 by solder 19. Lead wires 18
electrically connected to the voice coil 14 are soldered to the bent portions 21 d of the terminals
21. The terminal 21 is electrically connected to the voice coil 14 by being electrically connected
to the lead wire 18.
[0037]
Next, the engagement between the terminal and the slit will be described in more detail. In FIG. 7
and FIG. 8, the degree of bending of the terminal is illustrated larger than the actual value for the
convenience of description. Similarly, also in FIGS. 12 to 14 described later, the degree of
bending of the terminal is illustrated larger than the actual size for the convenience of
description.
[0038]
With reference to FIGS. 7 and 8, the slit 22 has two one side support portions 22f that abut on
one surface 21f of the terminal 21 and one surface 21f of the terminal 21 when viewed from the
direction ID in which the terminal 21 is inserted. It has a shape that includes two other side
support portions 22s that abut on the other opposite surface 21s. The other side support 22s is
located inside the area 24 sandwiched by the two one side supports 22f. That is, the other side
support portion 22s is positioned more inward than the two one side support portions 22f in the
region 24 sandwiched by the two one side support portions 22f. That is, the other side support
22s is positioned so as not to include the top of the two one side supports 22f. Further, at least
one other side support 22s may be provided.
12-04-2019
11
[0039]
A virtual first straight line L1 is assumed to connect the two one-side support portions 22f. A
virtual second straight line L2 is assumed to extend parallel to the first straight line L1. The
second straight line L2 is located on the first direction D1 side from the one surface 21f of the
terminal 21 to the other surface 21s with respect to the first straight line L1. The second straight
line L2 is located apart from the first straight line L1 by a distance T2 smaller than the thickness
T1 of the terminal 21. The other side support portion 22s is located on the second direction D2
side opposite to the first direction D1 from the second straight line L2. That is, the other side
support portion 22s is located on the second straight line L2 or on the second direction D2 side
with respect to the second straight line L2. In the present embodiment, the other side support
portion 22s is located in the first direction D1 than the first straight line L1.
[0040]
That is, the distance T2 of the perpendicular between the first straight line L1 and the second
straight line L2 is smaller than the thickness T1 of the terminal 21. The perpendicular distance
T2 between the first straight line L1 and the second straight line L2 is preferably assumed to be
smaller than the thickness T1 of the terminal 21 in a range of 5% to 15%. It is particularly
preferable that the perpendicular distance T2 between the first straight line L1 and the second
straight line L2 is assumed to be 10% smaller than the thickness T1 of the terminal 21.
[0041]
The other side support portion 22s is located in the first direction D1 than the second straight
line L2. Therefore, the distance of the perpendicular from the first straight line L1 to the other
side support portion 22s is smaller than the thickness T1 of the terminal 21. As a result, the
terminal 21 is not supported by the slit 22 in a straight state along the first straight line L1. That
is, the terminal 21 is supported by the slit 22 in a curved state.
[0042]
12-04-2019
12
The shape of the slit 22 will be further described. The slit 22 has a first hole 22a, and a second
hole 22b and a third hole 22c provided on both sides of the first hole 22a. The first hole 22a and
the second hole 22b are connected to each other such that a level difference is generated.
Further, the first hole portion 22a and the third hole portion 22c are connected to each other
such that a level difference is generated. A throttling portion 25 is provided at the connection
between the first hole 22a and the second hole 22b and at the connection between the first hole
22a and the third hole 22c.
[0043]
The terminal 21 is supported by the slit 22 in a curved state. That is, since the other side support
portion 22s is positioned in the second direction D2 opposite to the first direction D1 with
respect to the second straight line L2, when the terminal 21 is in the straight state, the one side
support portion 22f and the other side It can not pass between the support 22s. Therefore, the
terminal 21 is supported by the one side support 22f and the other side support 22s in a curved
state.
[0044]
Next, a method of attaching the terminal to the frame will be described. Referring to FIG. 9, frame
11 in which slits 22 are formed is prepared. Referring to FIG. 10, terminal 21 is prepared to be
inserted into slit 22. Referring to FIG. 11, terminal 21 is inserted into slit 22. At this time, the
insertion portion 21 c is located inside the slit 22. In the present embodiment, since the
projection 21b engages with the frame 11, the terminal 21 is positioned by the projection 21b in
the direction ID in which the terminal is inserted. Subsequently, the bent portion 21d is bent
along the lower surface of the terminal mounting portion 11d. Thus, the terminal 21 is supported
by the frame 11 by being inserted into the slit.
[0045]
Next, the operation of the speaker unit according to the present embodiment will be described. In
the speaker unit 10, the magnetic flux generated from the magnet 15 is guided by the plate 16
and the yoke 17, and is converged to the air gap in which the voice coil 14 is disposed to
generate a magnetic field. Then, when an alternating current flows through the voice coil 14, the
voice coil 14 vibrates up and down based on the left-hand rule of Fleming by the alternating
12-04-2019
13
current flowing through the voice coil 14 and the magnetic field generated from the magnet 15.
Therefore, the diaphragm 12 attached to the voice coil 14 vibrates. Thereby, the electrical signal
(alternating current) is converted to sound (vibration).
[0046]
Although the case where the other side support portion 22s is positioned in the first direction D1
relative to the first straight line L1 has been described above, the speaker terminal mounting
structure of the present embodiment is not limited to this. Referring to FIG. 12, in the first
modification of the speaker attachment structure of the present embodiment, the other side
support portion 22s is located in the second direction D2 than the first straight line L1.
[0047]
Although the case where the other side support part 22s is two was demonstrated above, the
terminal mounting structure for speakers of this Embodiment is not limited to this. Referring to
FIG. 13, in the second modification of the speaker attachment structure of the present
embodiment, the other side support portion 22s is singular.
[0048]
In the second modification described above, the other support 22s is located in the first direction
D1 relative to the first straight line L1. However, as in the first modification, the second support
22s is not You may be located in the 2nd direction D2 rather than 1 straight line L1. Referring to
FIG. 14, in the third modification of the speaker attachment structure of the present embodiment,
the single other side support portion 22s is positioned in the second direction D2 than the first
straight line L1.
[0049]
Although the case where the terminal 21 is a spring terminal has been described above, the
terminal 21 is not limited to this. Referring to FIG. 15, protruding portion 21a of terminal 21 may
be provided along the upper surface of terminal mounting portion 11d. In this case, for example,
12-04-2019
14
the protrusion 21 a of the terminal 21 may be electrically connected by soldering via the wiring
52 to the substrate side terminal 51 of the set side substrate (device side circuit board) 50.
[0050]
Although the internal magnet type speaker unit 10 has been described above, the present
embodiment can also be applied to an external magnet type speaker unit in which the magnet 15
is disposed on the outer peripheral side of the voice coil 14. The present embodiment can also be
applied to the horizontal speaker unit 10 which is formed so that the voice coil 14 is larger in the
width direction than in the thickness direction and is disposed on one surface of the magnet 15.
[0051]
Although the speaker unit 10 has been described as being formed in a track shape in a plan view,
it may be configured in a circular shape, an elliptical shape, or the like in a plan view.
[0052]
Next, the operation and effect of the present embodiment will be described in comparison with a
comparative example.
Referring to FIG. 16, in the first comparative example, the shape of the slit 22 is formed in a
straight line. In the case of Comparative Example 1, in order to insert the terminal 21 into the slit
22, it is necessary to make the dimension of the terminal 21 smaller than the dimension of the
slit 22. Referring to FIG. 17, since the dimension of terminal 21 is smaller than the dimension of
slit 22, terminal 21 moves in the width direction of slit 22 (in the direction of the arrow X in the
drawing) in slit 22. Therefore, the position of the terminal 21 with respect to the width direction
(the arrow X direction in the drawing) of the slit 22 is not stable.
[0053]
Further, referring to FIG. 18, since the dimension of the terminal 21 is smaller than the
dimension of the slit 22, the terminal 21 rotates around the bent portion 21 d in the slit 22 as a
fulcrum. Therefore, the position of the terminal 21 in the rotational direction of the terminal 21
12-04-2019
15
(the direction of the arrow R in the drawing) is not stable.
[0054]
Further, referring to FIG. 19, in Comparative Example 1, the terminal 21 does not have the
protrusion 21 b shown in FIG. 3. The frame 11 does not have the recess 23 shown in FIG.
Therefore, in the direction ID in which the terminal 21 is inserted, the terminal 21 is not
positioned by the protrusion 21 b. In this state, referring to FIG. 20, since the dimension of
terminal 21 is smaller than the dimension of slit 22, terminal 21 moves in the depth direction of
slit 22 (in the direction of the arrow Y in the figure) in slit 22. Therefore, the position of the
terminal 21 with respect to the depth direction (the arrow Y direction in the drawing) of the slit
22 is not stable.
[0055]
Referring to FIG. 21, in the second comparative example, the shape of the slit 22 is formed in a
straight line. Further, the terminals 21 are formed in a convex shape by press molding. In
Comparative Example 2, the terminal 21 mainly includes the first curved portion 31, the second
curved portion 32, and the third curved portion 33. In the state where the terminal 21 is inserted
into the slit 22, the terminal 21 is urged against the slit 22 by the elastic deformation of the
terminal 21. Therefore, in a state where the terminal 21 is biased, the first curved portion 31
contacts the one side surface 41 of the slit 22, and the second curved portion 32 and the third
curved portion 33 contact the other side surface 42. There is.
[0056]
In the comparative example 2, when forming the terminal 21 in a concave shape, variation in
shape is likely to occur. Therefore, in Comparative Example 2, variations in shape due to press
molding are more likely to occur than in the case where the terminals 21 have a linear shape.
The terminal 21 is not stably fixed to the slit 22 due to the variation of the shape due to the blow
molding. Therefore, the position of the terminal 21 is not stable.
[0057]
12-04-2019
16
On the other hand, according to the speaker terminal mounting structure of the present
embodiment, the thickness T of the terminal 21 in the first direction D1 is smaller than the
imaginary first straight line L1 connecting the two one-side support portions 22f. Assuming a
virtual second straight line extending parallel to the first straight line at the distance T2, the
other side support 22s is located on the second direction D2 side from the second straight line
L2. Therefore, the terminal 21 can be supported in a curved state by the two one-side support
portions 22f and the other-side support portions 22s. Therefore, the terminal 21 can be urged
against the slit 22 by the elastic force of the terminal 21. Thus, the terminal 21 can be stably
fixed to the slit 22. By stably fixing the terminal 21 to the slit 22, disconnection of the lead 18
due to the movement of the terminal 21 can be suppressed.
[0058]
Moreover, since the terminal 21 can be stably fixed to the slit 22, the position of the terminal 21
can be stabilized. Therefore, it is possible to suppress the contact deviation between the terminal
21 and the board-side terminal 51 of the set-side board (device-side circuit board) 50. Thereby,
the conduction defect due to the contact shift can be suppressed.
[0059]
In addition, since the terminal 21 can be stably fixed to the slit 22, generation of chattering noise
due to the movement of the terminal 21 can be suppressed. Thereby, stable sound can be
generated.
[0060]
Further, when the slit 22 is formed in a linear shape as in Comparative Example 1, the width of
the die for forming the slit 22 is a linear width, so the width of the die The dimension of
Therefore, the strength of the mold is reduced. Therefore, there is a limit to the dimension of the
width of the slit 22. Therefore, when the thickness of the terminal 21 is thin, the terminal 21 can
not be stably fixed to the slit 22.
[0061]
12-04-2019
17
On the other hand, according to the present embodiment, since the terminal 21 can be supported
in a curved state by the two one-side support portions 22f and the other-side support portion
22s, the case where the terminals 21 are linear In comparison, the dimension in the width
direction of the slit 22 can be increased. Therefore, the strength of the mold can be secured.
Thereby, the terminal 21 can be stably fixed to the slit 22 also from this point.
[0062]
Further, in the speaker terminal mounting structure of the present embodiment, the other side
support portion 22s is positioned in the first direction D1 relative to the first straight line L1, and
hence the two one side support portions 22f and the other side support The degree of bending of
the terminal 21 bent by the portion 22s can be reduced. Thereby, the insertion of the terminal
21 into the slit 22 can be facilitated.
[0063]
Further, in the speaker terminal mounting structure of the present embodiment, the other side
support portion 22s may be located in the second direction D2 than the first straight line L1.
Thus, the terminal 21 can be supported in a state of being greatly curved by the two one-side
support portions 22f and the other-side support portions 22s. Therefore, the terminal 21 can be
strongly urged against the slit 22 by the elastic force of the terminal 21. Thereby, the terminal
21 can be strongly fixed to the slit 22.
[0064]
Further, in the speaker terminal attachment structure of the present embodiment, at least one
other side support 22s is a single other side support 22s. Therefore, the configuration of the slit
22 can be simplified.
[0065]
12-04-2019
18
Further, in the speaker terminal mounting structure of the present embodiment, at least one
other side support 22s is two other side support 22s. Therefore, the terminal 21 can be
supported at four or more points. The terminal 21 can be sandwiched by the one side support 22
f and the other side support 22 s on both the one end side and the other end side of the terminal
21. Thereby, the terminal 21 can be fixed to the slit 22 more stably.
[0066]
Further, in the speaker terminal mounting structure of the present embodiment, the terminal 21
has the projection 21 b engageable with the frame 11 in the direction in which the terminal 21 is
inserted into the slit 22. Therefore, by engaging the projection 21 b with the frame 11, the
terminal 21 can be positioned in the direction ID in which the terminal 21 is inserted into the slit
22. Thus, the terminal 21 can be stably fixed to the slit 22 in the direction ID in which the
terminal 21 is inserted into the slit 22.
[0067]
Further, in the speaker terminal mounting structure of the present embodiment, the frame 11
has the recess 23 capable of receiving the protrusion 21 b. Therefore, by receiving the
protrusion 21 b in the recess 23, the terminal 21 can be positioned more stably in the direction
ID in which the terminal 21 is inserted into the slit 22. Thus, the terminal 21 can be stably fixed
to the slit 22 in the direction ID in which the terminal 21 is inserted into the slit 22.
[0068]
Further, in the speaker terminal mounting structure of the present embodiment, the terminal 21
is a spring terminal. Since the terminal 21 can be stably fixed to the slit 22, the position of the
contact of the spring terminal can be stabilized. Therefore, it is possible to suppress the contact
deviation between the terminal 21 and the substrate-side terminal 51 of the set-side substrate
50. As a result, it is possible to suppress the conduction failure due to the contact misalignment.
Further, since the terminal 21 can be stably fixed to the slit 22, when the load acts on the spring
terminal, the fulcrum of the spring terminal can be stabilized. Therefore, the performance of the
spring terminal can be stabilized.
12-04-2019
19
[0069]
The speaker unit of the present embodiment includes the above-described speaker terminal
mounting structure, and the terminal 21 is electrically connected to the lead wire 18 so as to be
electrically connected to the voice coil 14. Since the terminal 21 can be stably fixed to the slit 22
by the above-described speaker terminal mounting structure, disconnection of the lead 18 due to
the movement of the terminal 21 can be suppressed.
[0070]
Second Embodiment First, the configuration of a portable information terminal according to a
second embodiment of the present invention will be described. In the present embodiment, a
portable information terminal provided with the speaker unit 10 of the first embodiment will be
described.
[0071]
Referring to FIGS. 22 and 23, portable information terminal 100 in the present embodiment is a
mobile phone, and includes upper case 101, display unit 102, sound output hole 103, hinge unit
104, lower case 105, and the like. The operation unit mainly includes the operation button 106,
the number button 107, the display unit 111, the sound output hole 112, and the speaker unit
10 according to the first embodiment not shown.
[0072]
Referring to FIG. 22, a display unit 102 is provided on the surface of upper housing 101.
A sound output hole 103 is formed on one end side of the surface of the upper housing 101. A
hinge portion 104 is formed on the other end side of the upper housing 101. A hinge portion
104 is formed on one end side of the lower housing 105. The upper housing 101 and the lower
housing 105 are connected to be openable and closable by the hinge portion 104. An operation
button 106 is formed on the side of the hinge portion 104 on the surface of the lower housing
105. A numeric button 107 is formed from the operation button 106 in the direction opposite to
the hinge portion 104.
12-04-2019
20
[0073]
Referring to FIG. 23, a display unit 111 is provided on the back surface of upper housing 101. A
sound emission hole 112 is formed on the side of the display unit 111.
[0074]
The speaker unit 10 described in the first embodiment not shown is provided inside the upper
housing 101. A sound is emitted from the speaker unit 10 mainly to the outside of the portable
information terminal 100 through the sound emission holes 103 and 112.
[0075]
Next, the operation and effect of the portable information terminal in the present embodiment
will be described. According to the portable information terminal 100 in the present
embodiment, since the speaker unit 10 described in the above-mentioned Embodiment 1 is
provided, the same effects as those of Embodiment 1 are obtained.
[0076]
In the present embodiment, the mobile information terminal has been described by way of an
example of a mobile phone. However, the present invention is not limited to this, and may be a
smartphone, a PDA (Personal Digital Assistants), a game machine, a personal computer, or the
like.
[0077]
In addition, each above-mentioned embodiment can be combined suitably.
It should be understood that the embodiments disclosed herein are illustrative and nonrestrictive in every respect. The scope of the present invention is indicated not by the above
description but by the claims, and is intended to include all modifications within the meaning and
12-04-2019
21
scope equivalent to the claims.
[0078]
The present invention can be applied particularly advantageously to a speaker terminal
attachment structure in which a terminal is inserted into a slit of a frame and a speaker unit
provided with the same.
[0079]
Reference Signs List 10 speaker unit, 11 frame, 11a support portion, 11b inner peripheral
portion, 11c outer peripheral portion, 11d terminal mounting portion, 11e rear surface hole, 12
diaphragm, 12a central vibration portion, 12b voice coil mounting portion, 12c edge portion,
12d frame Mounting part, 13 frame cover, 14 voice coil, 15 magnet, 16 plate, 17 yoke, 18 lead
wire, 19 solder, 21 terminal, 21a projecting part, 21b projecting part, 21c inserting part, 21d
bending part, 21f one surface , 21s other surface, 22 slit, 22f one side support, 22s other side
support, 22a first hole, 22b second hole, 22c third hole, 23 recess, 24 area, 25 aperture , 31 first
curved portion, 32 second curved portion, 33 third curved portion, 41 one side surface, 42 other
side surface, 50 Side substrate, 51 substrate side terminal, 52 wiring, 100 portable information
terminal, 101 upper case, 102 display unit, 103 sound emitting hole, 104 hinge unit, 105 lower
case, 106 operation button, 107 numeral button, 111 Display part, 112 sound emission hole, D1
first direction, D2 second direction, direction in which ID terminal is inserted, L1 virtual first
straight line, L2 virtual second straight line, thickness of T1 terminal, T2 distance.
12-04-2019
22
Документ
Категория
Без категории
Просмотров
0
Размер файла
33 Кб
Теги
description, jp2012156953
1/--страниц
Пожаловаться на содержимое документа