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DESCRIPTION JPH0344199

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DESCRIPTION JPH0344199
[0001]
[Industrial field of application 1] The present invention relates to a jig J3 for assembling the
upper and lower mesh of the windshield forming the microphone head and a welding apparatus
1). [Prior Art 1 Generally, with regard to the windshield in the microphone head, in the case of
the upper half and the lower half of the mesh generally having a hemispherical cross-section, in
the center of the lower net, it is A microphone (a base for introduction of a one-phone main body
is attached and these partial and lower nets are joined and assembled at their respective rims via
an intermediate joint ring). Thus, as a method of assembling this type of windshield according to
the prior art, the intermediate joint ring is formed into a longitudinal cross section 11 and a3 is
formed, and the upper and lower parts thereof in the lower J3 and the lower groove of each
lower After inserting the opening edge of the matrix, it is adhered by pressure with an adhesive
or the like so that it does not come out, or it is joined by pressure caulking, or a half-month spot
is attached from the outside And the intermediate joint ring I! Cross-sectionally formed into a Tshape, and the upper and lower inner mounting steps are fitted with the opening edges of these
upper and lower support grids, and similarly pressure bonding, pressure caulking, outside It is
made to do spot soldering etc. [Problem 1 to be solved by the invention However, in the method
of assembling the windshield according to the above-mentioned conventional example, the
connection between the upper and lower frame grids through the intermediate bonding ring is
relatively complicated and the gap between them is 1 and 0 Not only is the degree of fitting loose
and it is weak to external shocks, but the intermediate joint ring protrudes to the inner joint
surface of the assembled windshield, so the sponge between itself and the microphone body
introduced inside is deformed. There is a disadvantage that the effect of 1g 1 way can not be
obtained, and, depending on the type of adhesive, it is easily affected by external stimuli, and in
the case of pressure caulking, it is used to get scratched on the outer surface There is also a
problem in terms of strength in the case of spot semi-III attachment from the outside, and this
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also has a structure in which each mesh part of -1 part and the lower part is meshed into smaller
layers sequentially from the outside to the inside. 6 if totally Because the adhesion and welding
from the inside of the opening edge of each mesh are not possible, the layers may peel off, and
the microphone [one phoneme is degraded and distorted in the reproduced sound, It is b which
has the fault of producing a crack etc. The inventor has created a microphone head having a
special and novel structure in order to solve the conventional problems. That is, FIG. 7 is a crosssectional view showing a schematic configuration of the entire microphone head, and FIG. 8 (a>
(b) is a welding portion before and after welding between the upper and lower upper grids and
the intermediate bonding ring. FIGS. 9 (a) and 9 (b) are enlarged cross-sectional views, and FIG. 9
(a) and FIG. 9 (b) show joints before and after welding of the upper and lower support nets and
the intermediate joint ring according to the other embodiments of the same, respectively. It is
sectional drawing expanded and shown.
In FIGS. 7 and 8, the windshield A at the microphone head 33 has an upper mesh 1 and a lower
mesh 2 having a hemispherical cross section, and these upper and lower meshes 1. 2 are, for
example, 10 mesh in each, the exterior 1a and 2a with a hole diameter of 1 mm?, 30 mesh, and
wll b in a hole diameter of 0.28 mm?. 2b, 40 mesh, inner mesh 1c, 2c with a pore diameter of
0.06 mm?, and in the center part of the lower mesh 2, introduction of the microphone [1 main
body B into the inside, for example, An annular base member 3 having a thread 3a on the inner
circumferential surface of the opening for making by screwing or the like is gi @@. Thus, each of
the upper and lower mesh nets 1.2, as shown in FIGS. 8 (a) and 8 (b), corresponds to the inner
peripheral portion of the intermediate joint ring 6 having a flat plate shape in longitudinal
section, At least a ring-shaped thread half-seal for welding forming in the middle between each
other] 7 or 8 with the silver solder for welding (hereinafter referred to as thread solder etc.) After
making the diameter and tightly insert (FIG. 8 (a)), the heating property 8 is provided from the
outer periphery by the high frequency dielectric means, and when the intervened wire solder etc.
7 is completely melted, A pressure 9 is appropriately applied between the joint portions to melt
them (welded portion 10), and let them naturally cool and fix them in place 1f1 (FIG. 8 (b)). Here,
it is difficult to manually average and compress the diameter reduction fit of the opening edges 4
and 5 of the upper and lower supporting grids 1.2 to the inner circumferential surface of the
intermediate bonding ring 6 described above, and it is difficult to press While it is very difficult
to concentrate in the finger tip part and cause compression distortion and to cause distortion and
it is very difficult to fit in the inner circumferential measuring device of the intermediate bonding
ring 6, wire solder etc. sandwiched in the opening edge 4.5 When 7 is heated and melted from
the outside of the intermediate bonding ring 6 and the wire solder etc. 7 is simultaneously
equally pressed while pressing from the upper side of the upper mesh 1, no heat spots occur and
the surface tension and the hair 11 1 phenomenon are uniformed. Is the best, and it is impossible
to do it by hand. Further, when adhesion strength is further required, as shown in FIGS. 9 (a) and
9 (b), an inner circumferential groove 60 is formed in the middle portion of the inner
circumferential surface of the intermediate joint ring 6. By keeping it in place, the adhesive
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strength can be sufficiently reinforced because the melted wire solder 7 and the like 7 flows into
the inner circumferential surface 6c and solidifies. In this case, the present invention provides a
windshield mesh assembly jig and method for a microphone head used for assembly and welding
of the upper and lower mesh members of the Asahi Defense Network, and a welding apparatus.
??????????? [Means for Solving the Problems] In order to solve the problems
described in the above, the solution of the present invention is as follows: 1 О 9 K of the
microphone head of the present invention has an inside diameter slightly smaller than the
opening edge outside diameter of each mesh of upper and lower parts. The inner diameter of the
intermediate joint ring is formed with an enlarged diameter step having an inner circumferential
surface and the same inner diameter as the outer diameter of the flat intermediate joint ring and
a downward step surface at a depth at which the intermediate joint ring fits somewhat. The
above construction means provided on the inner peripheral surface r of the ring hole having a
smaller diameter than that of the small diameter, and the method of assembling the windshield
according to the present invention are as follows. The ring hole of the assembly jig is inserted
and lowered, and the opening edge of the lower mesh body is elastically compressed by the ring
hole until the opening edge of the lower mesh body is inserted into the lower step surface of the
enlarged diameter step portion provided in the lower portion of the ring hole. The inner joint ring
is then fitted to the inner joint ring and then fitted somewhat to the enlarged diameter step. The
net is pushed from above, the opening edge of the lower net is transferred to the inner
circumferential surface of the intermediate bonding ring, and the assembly jig is removed after
being reduced in diameter bX against the elastic restoring force, The ring hole of the tool is
inserted and lowered from the upper side of the upper mesh body, and the opening edge of the
upper mesh body is elastically compressed and fitted by the ring hole until the opening edge of
the upper mesh body is embedded in the downward step surface. The intermediate joint ring
internally fitted with the one-way opening edge on which the lower net is reversed and the wire
solder iron is placed on one turn is fitted somewhat to the enlarged diameter step of the
assembling jig, and the upper net The lower opening edge of the upper mesh body is transferred
from the upper half of the intermediate joint ring to the lower half of the inner joint ring by
pushing the body from above, and the elastic force of the elastic member against the elastic
restoring force is reduced. Removing the assembling jig and assembling the upper mesh and the
lower mesh with the intermediate joint ring; A brighter microphone head windshield mesh
welding device is a micro bon head assembled with an intermediate bonding ring in which the
diameter of the opposite opening edge sandwiching the wire solder etc. of the upper mesh body
and the lower mesh body attached is reduced. When the storage and installation is performed, a
fixture body having an accommodation recess in which the upper opening like portion receives
the lower side of the intermediate bonding ring, a pressing unit for pressing the upper mesh
upper side, and the intermediate bonding ring u0 This is achieved by adopting each of the abovementioned constituent means consisting of a heating coil ring.
[Operation 1] The present invention adopts the above-mentioned means, so if using the assembly
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jig and the spread sheet of the present invention, the upper and lower mesh members can be
easily fixed to the intermediate fixed position by interposing wire solder etc. The upper one-part
mesh is assembled into a spherical shape by intermediate connection ring in a quick and secure
shrinking process, and the assembly structure is also 11 in longitudinal section and T in the
longitudinal section as in the prior art. Since the opening edge of the upper and lower mesh
members is simply fitted loosely without any elastic stress in the intermediate joint ring, the
mutual joining force can not be maintained, and other joining means such as adhesive, pressing
Without caulking or spot soldering, it would immediately dismantle just by applying a small
external force. As a result, in the conventional case, the intermediate joint ring of 11-section flat
plate type was unusable. However, in the case of the present invention, the internal fitting of the
opening edge of the upper and lower network to the intermediate bonding ring is subject to a
firm mechanical bonding force due to the elastic resiliency of the 1jn edge, The adhesion
between the outer periphery of the opening edge and the inner periphery of the intermediate
bonding ring is high because it has a white bond that does not break down unless it is added.
Then, the lower mesh is housed and installed in the four housing parts of the fixing device body
of the welding device, and the lower surface of the middle joint ring is received and fixed at the
upper edge part of the four housing parts 1) The heating coil ring is operated to apply the
heating action 8 by high frequency dielectric heating, and while pressing the upper mesh upper
side by the pressing part, the wire solder etc. pinched by the facing opening edge are
simultaneously heated m melted simultaneously The surface tension and the capillary
phenomenon are promoted to spread the molten solder evenly without any unevenness, to
improve the adhesion, and then naturally cool and solidify and bond. An embodiment of the jig of
the present invention will be described with reference to FIG. The windshield mesh assembly jig
C of the microphone head of the present invention is in the form of a ring in which the ring hole
11 is penetrated at the center, and the enlarged diameter step 12 is provided in the lower part of
the ring hole 11. The diameter of the inner peripheral surface 11a of the ring hole 11 = D1 ░
The diameter of the inner peripheral surface 12a of the enlarged step 12: the outer peripheral
surface 6a of the intermediate bonding ring 6: the diameter of the inner peripheral surface 6b of
the intermediate bonding ring 6 : Set so that the relation of the old translation made into D4
holds. DI <D4 <D2 = D3 and the downward step surface 12b of the enlarged diameter step
portion 12 is preferably half the depth h1 of the height h of the intermediate joint ring 6,
preferably 31 but is not limited thereto. Then, the working procedure of the assembling method
to the windshield according to the present invention using the assembling jig C of the present
invention will be described with reference to FIGS. First, the ring member 11 of the assembly jig
C is slid from the upper side to the outer circumferential surface of the lower mesh 2 from the
upper side, and the lower mesh 2 is inserted and lowered.
A first step in which the ring hole 11 is resiliently compressed and the inner peripheral surface
11a is internally fitted until the opening edge 5 of the first step is inserted into the downward
step surface 12b of the enlarged diameter step 12 provided at the lower portion of the ring hole
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11 The lower net 2 is pushed from 7 to 7 as shown in FIG. 2 and the opening edge 5 of the lower
net 2 as shown in FIG. Is transferred to the upper part of the inner circumferential surface 6b of
the intermediate joint ring 6, and the assembly jig C is removed after the inner diameter
reduction is fitted against the elastic restoring force of the second stage 0, see FIG. The ring hole
11 of the assembly jig C is separately slid from the upper side to the outer peripheral surface of
the upper mesh body 1 and inserted and lowered, and the ring hole is inserted until the opening
edge 4 of the upper mesh body 1 is embedded in the downward step surface 12b. The third step
operation (see FIG. 4) in which the elastic compression diameter Q is inserted into the inner
circumferential surface 11a by 11 and the lower mesh 2 are continuously reversed to make the
wire solder etc. 7 Fourth stage work, see FIG. 5 in which half of the intermediate joint ring 6
internally fitted with the upward opening edge 5 is fitted to the enlarged diameter step 12 of the
assembly jig C>, and the upper net 1 Of the downward opening edge 4 onto the wire solder etc. 7
of the inner joint ring 6a of the intermediate bonding ring 6 and disengaging the assembly jig C
after the diameter shrinking internal fitting against the diameter expansion elastic restoring
force. The upper mesh body 1 and the lower mesh body 2 are assembled with the intermediate
joint ring 6 by five members of work. On the other hand, an embodiment of the device of the
present invention will be described with reference to FIG. According to the windshield net
welding device of the microphone head of the present invention, when the assembly jig C and the
windshield net A assembled by the above method are accommodated and installed, the opening
upper edge portion 13a is supported on the lower side of the intermediate joint ring 6. The fixing
unit 13 in which the four housing parts 13b are recessed, the pressing unit 15 closely mounted
on the upper end of the upper net 1 at the time of welding, and pressing by the pressing force 9
of the magic stripe 14 and the intermediate bonding ring 6 And a heating coil ring 16 for
performing high frequency dielectric heating by concentrically surrounding them. Therefore, the
windshield A assembled by the method of the present invention can be soldered by using the
welding apparatus of the present invention? In order to melt 77 and weld the upper mesh body 1
and the lower mesh body 2 to the intermediate joint ring 6, the lower mesh body 2 is housed and
installed in the housing recess 13b of the fixture 13 and the upper edge of the opening of the
housing four 13b After the lower surface of the intermediate bonding ring 6 is supported and
fixed by the portion 13a, the heating coil ring 16 surrounding the intermediate bonding ring 6 is
operated to apply high frequency dielectric heating, and the pressing portion 15 The wire solder
etc. 7 loaded by the facing opening edge 4.5 is simultaneously heated and melted simultaneously
while the strip 14 is pressed, and the surface tension and the hair IIl tube phenomenon are
promoted to evenly and uniformly melt solder etc. 7 To improve adhesion and then allow the
welded portion 10 to naturally cool and aseptically bond.
Thus, if the windshield is manufactured using the present invention, a sturdy, uniform and
inexpensive one with excellent appearance and durability can be obtained, which makes
assembling impossible conventionally and simplifies manufacturing work. Excellent effects such
as simplification, speeding up, surety and homogenization can be achieved.
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[0002]
Brief description of the drawings
[0003]
FIG. 1 is a central longitudinal sectional view showing an embodiment of the present invention
jig, FIG. 2 to FIG. 5 are operation procedure steps of the present invention method, and FIG. 6 is
an embodiment of the present invention apparatus 7 is a central m sectional view of the
windshield manufactured according to the present invention, and FIG. 8 (a> (b) is a front view of
the same upper and lower wire mesh members with 1 m joint ring before welding) 9 (a) and 9 (b)
show joints before and after welding of the upper and lower wire nets and the intermediate joint
ring according to another example of the present invention. It is sectional drawing which
expands and shows, respectively.
A и и и Jl Anti-Bore B и и и Microphone body C и и и и Assembly jig D и и и welding device D1 и и и inner
hole diameter of the ring hole D и и и и и и inner diameter of the enlarged diameter step D3 иии Outer
circumferential surface diameter of intermediate bonding ring D4 и и и и и и и и и и diameter of the
intermediate bonding ring h и и и и height of the intermediate bonding ring 1 и и и upper mesh 2 и и и
lower mesh 3 и и и и Base member 4.5 и и и opening edge 6 и и и intermediate bonding ring 6a и и и и
outer circumferential surface, 6b, 11a, 12a и и и inner circumferential surface 7 и и и solder wire 8 и и
и heating ? For 9: Pressure force 10: Welded portion 11: Ring hole 12: Expanded diameter step
12b: Downward stepped surface 13: Fixing device body 13a: Opening upper edge 13b иии Housing
recess 4 и и и Line 5 и и и Pressed portion 6 и и и Heat coil ring
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