JPH02308699A - Microphone head - Google Patents

Abstract

PURPOSE:To simplify a joint structure and to facilitate assembling by interposing a solder member in a ring form between opening ridges of upper and lower nets and fitting closely the member to the inner face of intermediate joint rings, jointing them together and heating and bonding the member. CONSTITUTION:Solder member 7 such as thread solder or silver solder is fitted in a ring shape to an intermediate part between inner faces of an intermediate joint ring 6 of nets 1, 2 of upper and lower parts and the inner faces are mated closely together. Then heat 8 is applied from surrounding and when the solder member 7 is completely molten, a pressing force 9 is applied to solder the inner faces and fixed with natural cooling. Thus, the nets 1, 2 are bonded via a ring 6 simply and strongly, the joint structure is simplified and the assembly is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a microphone head, and more particularly to an improvement in the assembly structure of a windshield screen in a microphone head.

[Conventional technology]

- Generally speaking, for the windshield mesh on a microphone head, an upper mesh and an upper mesh each having a hemispherical cross section are usually used, and the windshield is located in the center of the lower mesh to prevent the introduction of the microphone body into the interior. At the same time, the upper and lower nets are assembled by attaching the L1 gold for each opening and joining them at one edge through an intermediate joining ring.

Therefore, in the structure of this type of windshield mesh according to the conventional example, an intermediate joining ring is formed with a cross section HIf':, and these upper and lower parts are inserted into the upper and lower mounting grooves, respectively. After inserting the opening edge of the lower outer mesh body,
The two pieces are bonded together by applying pressure with an adhesive to prevent them from coming out, or they are joined by pressure caulking, or spots 'l' and lIl are attached from the outside. The joining ring is formed into a horizontal T-shape in cross section, and the opening edges of the upper and lower assemblies are fitted into the respective edges and the lower inner mounting step, and then pressure bonded and applied in the same manner. Pressure caulking and spot I-field attachment are performed from the outside.

[Invention or problem to be solved]

However, in the windshield net assembly structure according to the conventional example described in Section I''II, the connection of the outer mesh part and the lower outer net body through the intermediate joining ring is relatively complicated and time-consuming, and the degree of fitting is also loose, so that it cannot be easily accessed from the outside. Not only is it susceptible to impact, but because the intermediate joint ring protrudes from the internal joint surface of the assembled windshield, the sponge between it and the microphone body introduced inside may deform, preventing the intended effect. Furthermore, depending on the type of adhesive, there is a risk of damage to the outer surface when spinning or pressure caulking is affected by external stimuli. This is exactly the same in the case where the meshes of the upper part and the first part have a multi-layered structure in which the mesh is made finer from the outside to the inside, and it is impossible to bond from the inside of the opening edge of each mesh. As a result, the layers may peel off, deteriorating the microphone characteristics and causing distortion and cracking in the reproduced sound.

The present invention has been made in order to solve these conventional problems. The structure has been simplified as much as possible within the clay enclosure that can maintain the characteristics of the structure, and it has been made easy to assemble. An object of the present invention is to provide a microphone head of this kind.

[Means to solve the problem]

11 In order to solve the problems mentioned above, the microphone head according to the present invention has an upper part attached to the inner surface of an intermediate joining ring having a longitudinal cross-section of a plate-like shape through an adhesive such as ring-shaped thread solder or silver wax. This is characterized in that the opening edges of each of the lower nets are made to have a slightly compressed diameter so that they are brought into close contact with each other, and the adhesive is melted by external heating and then solidified for bonding.

[For production]

Therefore, in the present invention, a ring-shaped thread and an adhesive such as silver wax are interposed between the opening edges of the upper and upper nets, and on the inner surface of the intermediate bonding ring,
The edges of each of these openings are compressed to a slightly compressed diameter and brought into close contact with each other, and the adhesive is melted and solidified by heating from the outside, and the adhesive is melted and solidified between the opening edges of each of the upper and lower nets. can be glued together.

[Embodiments] Hereinafter, embodiments of the microphone head according to the present invention will be described in detail with reference to FIGS. 1, 2, and 3.

FIG. 1 is a cross-sectional view showing the general configuration of the entire microphone head using an embodiment of the present invention, and FIG. 2(a), (
b) is an enlarged cross-sectional view illustrating the bonding portion between the upper and lower outer mesh bodies and the intermediate bonding ring and the bonded portion after bonding, and FIG. 3(a).

(b) is an enlarged cross-sectional view showing the bonded portions of the upper and lower outer mesh bodies and the intermediate bonding ring after bonding according to another embodiment of the present invention.

In the configurations of the embodiments shown in FIGS. 1 and 2, the windshield net A in the microphone head has an upper net 1 and a lower net 2 each having a hemispherical cross section. , 2 are, for example, IO meshes for each of 9 in this embodiment configuration.

It consists of three layers: outer wires 1a, 2a with a hole diameter of 1 mmφ, battings 1b, 2b with a 30 mesh, hole diameter 0.28 mmφ, and inner nets 1c, 2c with a 40 mesh, hole diameter Q, 06 mmφ. A ring-shaped base member 3 having a thread on the inner circumferential surface of the opening is attached to the center part for introducing the microphone main body B into the interior by, for example, screwing.

Therefore, each of the upper and lower mesh bodies 1.2 is constructed as shown in the lower two figures (
, l), and (b), an adhesive wire solder 7 (or a ring-shaped adhesive wire) 7 is applied to the inner surface of the intermediate bonding ring 6, which has a flat cross-sectional shape, at least in the intermediate portion thereof. After making each opening edge 4.5 a slightly compressed diameter with a silver cage for adhesion interposed therebetween, the opening edges 4.5 were brought into close contact (second
(a)), a heating effect 8 (or heating by a burner means) is applied from the outer periphery by high-frequency dielectric means, and the intervening thread solder 7 (or il f
i') is completely melted, a pressurizing force 9 is applied between the joint parts to bond them (adhesive part 10), and they are allowed to cool naturally to be fixed as desired (second Figure (b)
).

Here, regarding the fitting of the F part and the opening edges 4.5 of the lower nets 1 and 2 into the inner surface of the intermediate joining ring 6, it is important to note that the opening edges 4.5 of each of the lower nets 1 and 2 should be It is best to make the outer diameter of 4.5 slightly larger and use a specified fitting jig to reduce the diameter and press fit it in. By taking such measures, you can avoid applying extra stress. Without, and moreover,
It can be fitted very easily.

That is, as described above, each of the lower mesh bodies 1,
An intermediate joining ring 6 is attached to the opening edges 4 and 5 of 2 from the outer peripheral side.
In the structure of this embodiment in which the upper and lower mesh bodies 1.2 are bonded together through the intermediate bonding ring 6, the bonding can be performed locally and firmly, and the assembly thereof also requires less time and effort. In addition, since the intermediate joint ring 6 is not protruded from the inner surface of the adhesive part 10 of the assembled windshield net A, it is difficult to insert a sponge between it and the microphone body B introduced inside. In addition, since the adhesive part 10 is made by soldering (silver wax, soldering), it can sufficiently resist external stimulation and impact, and these F parts will not deform. , each mesh body 1 of the F section,
Even if 2 has a multilayer structure, there is a risk that delamination may occur due to pressure caulking or the like.

In addition, if even higher adhesive strength is required, see Figure 3 (
a>, (b), by forming an inner circumferential groove 6a in the middle part of the inner surface of the nη intermediate joining ring 6, the melted material can be removed in the inner circumferential groove 6a. ■7
flows in and solidifies, which can sufficiently strengthen the adhesive force.

In addition, although the case where each net of the upper part and the F part has a multilayer structure is described in the surface example, it is of course possible to apply it to the case of a single layer structure and obtain the same effect. It is.

〔Effect of the invention〕

As described in detail above, according to the present invention, a ring-shaped teacher [section F] is attached to the inner surface of the intermediate bonding ring having a cross section and an upper plate shape through an adhesive such as old silver wax.

The opening edges of each of the lower nets were made to have a slightly compressed diameter, and the adhesive was melted and solidified by heating from the outside, and the adhesive was bonded.

The bonding itself between the lower mesh bodies via the intermediate bonding ring can be made extremely simple and strong, strong against external shocks, and can be easily assembled without much effort. In addition, since the intermediate joining ring does not protrude from the inner surface of the adhesive part of the assembled windshield net, even if a sponge is interposed between it and the microphone body introduced inside, this Despite the deformation, the desired microphone characteristics can be sufficiently ensured.

Furthermore, since the bonded parts are soldered or silver soldered, there is external stimulation.

In addition, even if the upper and lower nets have a multilayer structure,
It has excellent features such as no risk of delamination.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a schematic configuration of an embodiment of a microphone head according to the present invention, and FIGS. 2(a) and (b)
3(a) is an enlarged cross-sectional view showing the bonding surface between the V-g and F-component nets and the intermediate bonding ring, and the bonded portion after bonding, respectively; FIG. (b) is a cross-sectional view of the bonding surface between the upper and lower nets and the intermediate bonding ring and the bonded portion after bonding according to another embodiment. A...Microphone head windshield, B...Microphone body. ! ...Lower mesh, la, lb, lc...upper mesh. External line of body, batting, inner mesh, 2...Lower mesh, 2a. 2b, 2c...Outside line of lower net, batting, inner net, 3.
. . . Cap member, 4. . . Opening edge of upper mesh body, 5.
. . . Opening edge of lower mesh body, 6 . . . Intermediate joining ring, 6a .
Ring-shaped solder thread for adhesion, 8... Heating action by high frequency dielectric, 9... Pressure force, 1o... Bonding part. Figure 1 Figure 2 (0) (b) Figure 3

Claims (2)

[Claims] (1) For the inner surface of the intermediate joint ring, which has a flat plate shape in longitudinal section,
The upper part is attached through a ring-shaped solder thread, silver solder, or other adhesive.
A microphone head characterized in that the opening edges of each of the lower nets are made to have a slightly compressed diameter and are tightly fitted, and the adhesive is melted by external heating and then solidified and bonded. (2) The microphone head according to claim 1, further comprising a groove portion formed in the inner circumferential surface of the intermediate bonding ring corresponding to the adhesive portion, into which the adhesive flows and solidifies.