JPS5850702Y2 - headphone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a headphone that allows the headphone unit to swing smoothly, improve the state of the headphone unit being pressed against the ear, and prevent the headphone unit case from falling off.

Headphones are popular among audio enthusiasts because they allow you to enjoy stereo music with good sound quality by placing it directly on your ears without being bothered by external noise or bothering others. widely used in

These headphones are normally used by being worn on the head via a headband, pressing the headphone unit directly onto the ears, adjusting the positions of the left and right units with the headband, and holding them correctly in the ears.

For this reason, headphones are generally constructed so that the earpiece of the headphone unit can freely swing and deflect with respect to the Radband, since there are individual differences in the shape of the user's head and the position of the ears. ing.

Fig. 1 shows one unit of this conventional headphone, in which both legs of a U-shaped hanger 3 are rotatably attached to a unit case 2 with an earmuff 1 attached. The end of the headband 4 is rotatably attached to the center of the headband 4, so that the vertical and horizontal angles of the headphone unit can be adjusted via the ringer 3 and the headband 4. It was configured to be positioned.

However, in this conventional device, there is a horizontal deflection movable part of the headphone unit composed of the hanger 3 and the headband 4, and a vertical deflection movable part of the headphone unit composed of the unit case 2 and the hanger 3. Since these two deflection movable parts are constructed separately, the cooperation between the two deflection movable parts is awkward, and the swing deflection movement lacks smoothness.

Further, when the headphones are configured as described above, it is necessary to provide a mechanism for regulating the movable range of each deflection movable part, which makes the structure complicated.

This method has disadvantages such as complicated assembly due to the large number of parts, and high costs.

Incidentally, recently, we have seen the emergence of audio enthusiasts who enjoy listening to stereo music outdoors while wearing headphones on their heads.

When using headphones in this manner, care must be taken to ensure that they can be used normally even when subjected to vibrations while driving or external shocks caused by contact accidents, and that the components of the headphones do not accumulate or deteriorate in performance. There is a need.

In view of these points, the present invention provides a deflection movable part for the vertical and horizontal angles of the headphone unit in one place, which eliminates the conventional drawbacks and prevents the unit case from falling off due to external impact. The objective is to provide headphones that can be used safely both indoors and outdoors.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.
In the figures to FIG. 9, 6 is a substantially cylindrical unit case housing a unit 8 having a diaphragm, etc. inside a hollow chamber 7, which is integrally molded from synthetic resin, and has a net-like cover on one end surface. Engaging pawls 10 and 10 holding the edges of 9 are protrudingly molded.

Reference numeral 11 denotes a disc-shaped flange protruding from the peripheral surface of the unit case 6, which engages and holds a substantially disc-shaped ear cover member 12 made of a flexible elastic member attached to the surface of the unit case 6. It is.

At the other end of the unit case 6 is a locking portion 13 having a substantially arcuate cross section.
．． 13 are arranged facing each other at a distance from each other, and a boss B is provided protruding from the center of the other end surface of the unit case 6, and a truncated conical engagement protrusion 14 is provided on the shaft and end of this boss B. As shown in FIG. 5, an elastic body 15 made of a flexible elastic material such as foamed resin is inserted between the locking portion 13 and the engaging protrusion 14. As shown in FIG.

Reference numeral 16 denotes a protrusion formed on the boss B adjacent to the engagement protrusion 14, and is formed parallel to the inner end surface of the locking part 13.
A slit 18 formed at the end of the hanger cover 17 is loosely inserted into this protrusion 16 .

. . . The cover 17 is an elongated substrate 1 made of synthetic resin.
9, a through hole 20 for screw insertion is formed at the intermediate position in the longitudinal direction of the substrate 19, and a tongue piece 21 is extended from one end of the substrate 19 to be inserted into an opening of a hanger to be described later. There is.

Reference numeral 22 denotes a tapered recess formed around the opening of the through hole 20, in which the head of the screw 23 inserted into the through hole 20 is accommodated.

On the other hand, a circular recess 24 is formed at the other end of the substrate 19 to accommodate the engaging protrusion 14 of the unit case 6, and a circular recess 24 is formed in the center of the recess 24, which communicates with the slit 18 and is slightly larger than the interval between the slits 18. A through hole 25 having a diameter is provided, and a tapered recess 26 is formed at the opening edge on one side of the through hole 25.

Therefore, the hanger cover 17
and the back surface of the unit case 6.
5, the engagement protrusion 1 is normally urged outward by the elasticity of the engagement protrusion 1.
4.

Reference numeral 27 is a hanger made of synthetic resin molded into a substantially quadrangular truncated pyramid shape, and has a recess 28 that opens on the inner surface.
A threaded portion 29 into which the screw 23 is screwed is provided in the recess 28, and the end of the hanger 27 communicates with the recess 28, and the tongue piece 21 of the hanger cover 17 and the end of the headband 30 are provided inside the recess 28. An opening 31 into which the part is inserted is formed.

- At the other end of the hanger 27, there is an annular metal cover housing ring 3 whose bottom surface is flush with the bottom surface of the hanger 27.
2 is integrally molded, and a stepped portion 34 for accommodating the metal cover 33 is formed at a mid-high position on the inner peripheral surface of the metal cover accommodating ring 32.

Further, at the lower end of one end of the metal cover accommodation ring 32,
A four part 36 for accommodating a protruding tongue piece 35 is formed on the opening edge of the metal cover 33, and a lead wire drawn out from the unit 8 is attached to the side surface of the metal cover accommodating ring 32 located in the diametrical direction of this recess 36. An insertion hole 37 is formed in which a tube 38 for guiding the lead wire is inserted.
is installed.

A substantially dogleg-shaped bending support piece 39 is protruded from the upper end of the other end of the hanger 27.
A contact piece 41 having a stepped portion 40 inside thereof is positioned above the center position of the metal cover housing ring 32 .

Then, the contact piece 41 is inserted into a later-described through hole of the metal cover 33 to hold the metal cover 33 housed in the metal cover housing ring 32.

In addition, in the figure, 42 is a through hole formed in the center of the dish-shaped metal cover 33, and 43 is a circular notch formed at the opening edge of the metal cover 33. When housed in the metal cover housing ring 32, It is formed to open the insertion hole 37, and 44 is a flange formed protruding from the opening periphery of the metal cover 33.

When assembling the headphones according to the present invention configured in this way, hold the unit case 6 in which the unit 8 with the diaphragm cover 9 provided on the front side in the hollow chamber 7 is attached, with the back side facing upward, and then Locking part 13,1 of case 6
Place the elastic body 15 so that the opposing sides are located between the two sides of the elastic body 15, and while maintaining this state, turn the concave portion 26 outward at a position opposite to the protrusion 16 formed on the unit case 6, and slit formed at the end. Hold the hanger cover 17 with the hanger cover 18 facing the boss B formed on the back surface of the unit case 6, and insert the slit 18 into the boss B while pressing the elastic body 15, and then close the hanger cover 17 as shown in FIG. The engagement protrusion 14 is accommodated in the recess 24 of the holder.

In this case, the hanger cover 17 is urged outward by the elasticity of the elastic body 15 interposed on the back surface of the unit case 6, and an engagement relationship is formed between the peripheral edge of the engagement protrusion 14 and the inner wall of the recess 24. , are integrally connected to the unit case 6, so that the unit case 6 is prevented from falling off.

Since the unit case 6 is given an appropriate margin by the elasticity of the elastic body 15, it can swing in both left and right directions in FIG. Since the deflection swing can be performed freely, the part that functions for these deflection swings is concentrated in the recess 24 of the cover 17, and it also has vertical and horizontal swing functions. Therefore, the unit case 6 can be deflected and swung smoothly.

After assembling the unit case 6 and the hanger cover 17, the metal cover 33 was housed in the metal cover housing ring 32, and the contact piece 41 was inserted into the through hole 42 of the metal cover 33. and this...
The headband 30 is inserted into the opening 31 formed in the ringer 27.
Insert the tongue piece 21 formed at the end of the hanger cover 17 and the through hole 20 of the hanger cover 17.
After aligning the position of the threaded part 29 inside the hanger 27 with the position of the through hole (path shown) in the headband 30, the screw 23 is screwed in to close the opening of the recess 28 of the hanger 27, and... The hanger 27 and the unit case 6 are integrally connected via the hanger cover 17.

In this case, the tip of the contact piece 41 of the hanger 270 is in contact with the outer end surface of the engagement protrusion 14 of the unit case 6, or is positioned close to it, so that the hanger 27 is subject to impact caused by external contact. The abutting piece 41 is displaced to the upper right in FIG. There is a concern that the unit case 6 may disengage from the protrusion 14 and fall off.

However, in the present invention, the contact piece 41 formed on the hanger 27 is inserted into the through hole 42 of the metal cover 33, and this metal cover 33 is held. Even if the unit case 6 falls off from the metal cover housing ring 3
Since the boss B can be prevented from coming off from the slit 18 of the cover 17 by engaging with the inner wall of the unit case 6, the unit case 6 is prevented from falling off.

In this case, the material or plate thickness of the elastic body 15 is appropriately selected, the crimping thickness due to external impact is designed in advance, and the inner wall of the recess 24 of the hanger cover 17 and the engaging protrusion 14 are formed on the crimping thick plate. If the span of the boss B and the recess depth of the recess 24 are set so that the engagement with the peripheral edge is not released, the engagement protrusion 14 and the hanger cover will still be connected even if subjected to an external impact. Since the engagement with the unit case 17 is maintained, the unit case 6 can be prevented from falling off.

In addition, the lead wire (path shown) drawn out from the unit 8 is as follows:
The lead wire is passed through a tube 38 housed in a lead wire insertion hole 37 formed in a metal cover housing ring 32 of the hanger 27 and pulled out to the outside of the headphone unit, and the earmuff member 12 is attached to the front surface of the unit case 6.

As described above, the present invention allows the three-unit case constituting the headphone unit that is crimped onto the ear to be swung vertically and horizontally relative to the hanger attached to the end of the headband via the boss provided on the back. The structure allows these deflection swings to function at one location on the boss and the hanger cover, and also has these functions, so each deflection swing can be performed smoothly, and the mutual By smoothing the coordination of deflection and rocking, the headphone unit can be easily adjusted to the position of the ear.

In addition, as described above, the present invention is configured so that the functions of the vertical and horizontal deflection swings are performed at one location on the boss and the hanger cover, without separating the functional parts, and each deflection range is controlled separately. Since there is no need to provide a regulating mechanism, the number of parts can be reduced accordingly.
Since the structure can be simplified, assembly can be easily performed.

Furthermore, the present invention can prevent the unit case from falling off due to external shocks, making it safer to use.This effect is especially suitable when using headphones outdoors. There is.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 is a vertical sectional view of an embodiment of the present invention, Fig. 3 is a perspective view of a unit case, and Fig. 4 is a perspective view of a conventional example.
Figure 2 is a perspective view showing the back and front of the banger cover, Figure 5 is a perspective view of the elastic body, Figure 6 is a sectional view showing the assembly of the unit case and banger cover, and Figure 7 is a perspective view showing the back and front of the banger cover. - FIG. 8 is a perspective view of the metal cover, and FIG. 9 is a perspective view showing the external appearance of the headphone unit constituting the headphones according to the present invention. 6...Unit case, 8...Unit, 14...
・Engagement protrusion, 17...Ngar cover 23...
Screw, 24... recess, 27... n, '7'-3
0... Headband, 32... Metal cover housing rinse 41... Contact piece.

Claims (1)

[Scope of utility model registration request] It has a hanger 21 and a hanger cover 17 that are integrally attached to the end of the headband 30 with screws 23, and a slit 18 provided at the tip of the hanger cover 17 is provided on the back side of the unit case. the engaging protrusion 14 into the recess 24 of the hanger cover 17.
By dropping the unit case 6 containing the unit 8 which has a diaphragm etc. mounted therein so as to be able to swing and deflect, and the engaging protrusion 14 from falling out of the recess 24 of the ringer cover 17. Headphones that are protected from the contact piece 41 provided on the hanger 27 and the metal cover housing ring 32 that come into contact with the engaging protrusion 14.