JP2605268Y2 - Headphone equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headphone device.

[0002]

2. Description of the Related Art In a headphone device in which a headphone body having a built-in speaker or the like is mounted on an auricle, an ear hanging hanger is provided on a housing of the headphone body so that the headphone body can be mounted on the auricle. Are known.

In a conventional headphone device, a hanger is fixed to a housing of a headphone body so as not to move (first conventional example), or a hanger of a headphone housing is rotatably mounted on a hanger. Is hooked on the auricle and then the housing can be rotated by a required amount.

As a specific example of the latter, in which the housing can be rotated with respect to the hanger, Japanese Utility Model Publication No.
There was one described in JP-A-16059. According to this configuration, an outer peripheral surface of a shaft portion of a hanger is provided with two inclined portions having different inclination directions, and a mountain-shaped leaf spring elastically contacting one of the inclined portions is provided in a bearing hole provided on a housing side. (Second conventional example).

[0005]

However, in the headphone device of the first conventional example, since the position of the headphone body is inevitably determined by hooking a hanger on the auricle, the headphone body is pressed against the auricle or the auricle. It is impossible to make adjustments such as moving away from the user, and it is difficult for everyone to obtain an appropriate wearing feeling in accordance with the ear shape having individual differences.

[0006] In the headphone device of the second conventional example,
Since the angle between the hanger and the housing is determined depending on which of the two inclined portions of the hanger shaft portion the mountain-shaped leaf spring on the housing side comes into contact with, the housing has only two positions with respect to the hanger hooked on the pinna. I can't choose. Therefore, even in the second conventional example, it is difficult for anyone to obtain an appropriate wearing feeling according to the ear shape having individual differences.

The present invention has been made in view of the above problems. That is, the present invention not only allows the user to adjust the angular position of the housing of the headphone body with respect to the hanger in a state where the hanger is hooked on the pinna, but also allows the user to adjust the housing position from the position adjusted by the user. By ensuring that the right and left ears do not move easily, anyone can get an appropriate wearing feeling according to the ear shape with individual differences, and the number of parts is small and easy to assemble It is an object to provide a simple headphone device.

[0008]

The headphone device according to the present invention is formed as a large base having a circular cross section at both ends.
It has been straight shank and provided with a hooking rod portions which are hooked on the extension issued and auricle from both ends of the shaft portion and the both sides of the imaginary line perpendicular to the axis of the shaft portion shape with a symmetrical hanger, a headphone main body having a built-in with and speaker a bearing hole for rotatably holding the shaft portion of the hanger, the resilient braking rotation of the upper <br/> Kijiku unit And a pad for braking, wherein the bearing hole cooperates with the base to hold the base.
And two arc-shaped bearing surfaces, and the bearing surface
Engage with the base to prevent axial displacement of the shaft.
The stepped portion to be guided and the flat surface provided to face the shaft portion.
The braking pad is formed by the flat surface and the shaft portion
The bearing hole is
Bearing cover having the above bearing surface and the above flat surface
Part and the other shaft having the other bearing surface and stepped part
And the other shaft
On the bearing surface of the receiving cover part, the shaft part
For axle stops that prevent the base from coming off when the base is in contact
A small projection is provided .

[0009]

According to the present invention, the headphone body can be rotated around the shaft of the hanger, and at the time of rotation, the clamping pad having elasticity presses against the shaft so that it is resilient. The relative rotational position of the shaft and the bearing hole of the headphone body can be arbitrarily and continuously determined. That is, when the headphone main body is rotated, the headphone main body is fixed to the shaft portion at the position where the rotation is completed by the elastic pressure of the braking pad. Moreover, the braking
Since the head is pressed against the shaft in surface contact, the headphone
The main body is stably fixed at an arbitrary rotation position.
Also, the durability of the braking pad is improved. Also, since the shape of the hanger is symmetrical on both sides of an imaginary line perpendicular to the axis of the shaft, it can be worn in the same condition on either pinna, regardless of the right or left ear. it can. Further
, Two bearing cover parts, one of which has a bearing hole and the other of which
The shaft is held in the bearing hole.
Also, the assemblability for holding is improved. In particular, small
The protrusion prevents the shaft from pulling out to the other bearing cover.
Attach one bearing cover to the other bearing cover
Being able to do so further improves its assemblability.

[0010]

FIG. 1 is a schematic perspective view of a headphone device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing components of the headphone device, and FIG. 3 is an exploded perspective view showing other components of the headphone device. FIG. 4 is an exploded perspective view showing still other components of the headphone device, FIG. 5 is a perspective view of an inner housing incorporating a speaker and a driving device, and FIG.
7 is a partial cross-sectional view of the headphone device using the components of FIG. 3, FIG. 7 is a cross-sectional view of the headphone device using the components of FIG. 4, and FIG. 8 is a plan view showing the inner surface side of the outer housing 3.

A housing 1A of the headphone main body 1 (hereinafter referred to as a main body housing) includes an inner housing 2 and an outer housing 3.

The inner housing 2 has a large number of sound holes 22 in a dome-shaped bulging wall 21 at the center. These sound holes 22 are formed in a central region of the bulging wall portion 21 and a region eccentric to a bearing cover portion 26 described later.
A substantially ring-shaped ridge 23 is provided on the outer periphery on the inner surface side of the inner housing 2.
And the insertion pieces 25 are integrally formed. FIG. 5 is a perspective view of the inner housing 2 incorporating the drive device 4 and the like as viewed from the inner surface side. As shown in FIG. 5, the drive device 4 is incorporated in a form housed inside the inner housing 2. The bearing cover 26 of the inner housing 2 has a long flat surface 27, arc-shaped bearing surfaces 28, 28 located on both sides of the flat surface 27, and a flat surface 2.
7, projecting pieces 29, 29 rising from the edge in the width direction W (FIG. 4) are provided. A recess 20 for inserting a cord is formed in the ridge 23 on the side of the inner housing 2 opposite to the bearing cover 26.

The outer housing 3 has a peripheral wall portion 31,
An outer wall (corresponding to the outer wall in the main body housing 1A) 32 integrally formed in a bulging shape with the peripheral wall 31, and a bearing cover 3 integrally provided at one position of the peripheral wall 31.
And 3. On the opposite side of the bearing cover 33, a recess 34 for inserting a cord is formed in the peripheral wall 31. On the inner surface side of the peripheral wall 31, engagement recesses 35, 35 and the like are provided. A central portion of the outer wall portion 32 is formed as a flat plate portion 36, and a circular opening 37 is formed in the flat plate portion 36, and two extension holes extending radially outward from the opening 37. Sections 38A and 38B are established. The two extension holes 38A and 38B are formed at locations spaced apart by 180 degrees in the circumferential direction of the opening 37, and one extension hole 38A is wider than the other extension hole 38B. is there. Therefore, both extension holes 38A, 38
In order to distinguish B, in the following description, one extension hole is referred to as a wide extension hole 38A, and the other extension hole is referred to as a narrow extension hole 38B.

As is clearly shown in FIG.
6, a first projection 51 is provided between the wide extending hole portion 38A on the inner surface side and the narrow extending hole portion 38B 180 degrees away from the wide extending hole portion 38A in the clockwise direction X (see FIG. 6). Second
The projection 52 is provided at an interval (in the illustrated example, an interval of 45 degrees). A first groove 51a is provided adjacent to the first protrusion 51 in the clockwise direction X, and a second groove 52a is provided adjacent to the second protrusion 51 in the counterclockwise direction Y. A raised portion 53 is provided adjacently in the counterclockwise direction. The raised portion 53 has a downwardly inclined surface 53 a extending from the top portion 51 b of the first projection 51 to the inner surface side in the circumferential direction of the flat plate portion 36, and the top portion 51 b is located radially inward of the opening 37. It has a descending slope. The first protrusion 51 and the second protrusion 52 have a function as stoppers for restricting a rotation range (range indicated by θ) of the protruding pieces 75A, 75B described later. Therefore, it can be said that the protruding portion 53 is provided outside the rotation range (the range indicated by θ) of the protruding pieces 75A and 75B regulated by the first protrusion 51 and the second protrusion 52. In this embodiment, the flat plate portion 36 is provided with a first projection 51 and a second projection 52 for regulating the rotation range (range indicated by θ) of the protruding pieces 75A and 75B, and is provided along with them. Although two sets of the first groove 51a, the second groove 52a, and the raised part 53 are provided rotationally symmetrically via the center P of the opening 37, only one set may be provided. Further, engagement holes 54 are formed at two places in the circumferential direction of the flat plate portion 36.

Bearing cover 3 of outer housing 3
3, a rising wall portion 55, an engaging piece portion 56 protruding from an edge of the rising wall portion 55 toward the center of the outer housing 3, and a circular arc shape provided at both ends of the rising wall portion 55. Bearing surfaces 57, 57, small protrusions 58 for stopping provided near the bearing surfaces 57, 57, and ribs 59 for supporting the shaft provided at appropriate positions on the rising wall 55. I have.

The hanger 6 has a straight shaft 61 and an auricle 200 extending from an end of the shaft 61 (FIG. 10).
(See FIG. 11). The shaft portion 61 has large-diameter base portions 62, 62 each having a circular cross section at both ends. The locking rod portion 65 has a flat cross-sectional shape throughout, and beams 67, 67 extending from a mountain-shaped top 66 are connected to the bases 62, 62 via bent portions 68, 68, respectively. In other words, as shown in FIG. 2, the shape on both sides sandwiching a virtual line CC perpendicular to the axis of the shaft portion 61 is a symmetric overall shape. In the bent portions 68, 68, the flat locking rod portion 65 has a shape that is twisted and protruded toward one side in the thickness direction T (FIG. 1).

In FIG. 3, reference numeral 8 denotes a disk-shaped cover. The cover 8 is provided with engagement projections 81, 81 and a positioning projection 82 for positioning on the back side.

In FIG. 4, reference numeral 7 denotes a microphone arm side housing (hereinafter, referred to as an arm side housing). FIG.
As shown in FIG. 7 and FIG. 7, the arm-side housing 7 includes a disk portion 71, a cylindrical microphone arm connecting portion 72 integrally formed at a predetermined position in the circumferential direction, and a central portion of the disk portion 71. It has an upright shaft 73, and a recess 74 is formed at a position adjacent to the shaft 73, and the recess 74 communicates with the internal space of the microphone arm connecting portion 72. The shaft 73 is hollow and is divided at a plurality of positions in the circumferential direction. Reference numeral 73a denotes a dividing groove which divides the shaft 73 in the circumferential direction. Furthermore, 18 at the tip of the shaft 73
Protruding pieces 75A and 75B are provided at two places separated by 0 degrees to project radially outward of the shaft body 73. A gap having the same size as the thickness of the flat plate portion 36 of the outer cover 3 is secured between the protruding piece portions 75A, 75B and the flat plate portion 71, and furthermore, the protruding piece portions 75A, 75B are provided.
Are provided with projections 75a and 75b (see FIGS. 4 and 9) on the lower surface thereof. One of the protruding pieces 75A, 75B is formed to be wide corresponding to the wide extending hole 38A, and the other protruding piece 75B is formed to have the narrow extending hole 38B. Are formed to correspond to the width. Therefore, one protruding piece is referred to as a wide protruding piece 75A, and the other protruding piece 75B is referred to as a narrow protruding piece 75B.

A microphone arm 76 is connected to the microphone arm connecting portion 72 in a fitting manner, and a cap 78 is attached to a sound collecting portion 77 of the microphone arm 76. The microphone arm 76 and the microphone arm connecting portion 72 are connected by engaging an engaging claw 76 a provided at the base end of the microphone arm 76 with a stepped portion 72 a provided on the microphone arm connecting portion 72. I have. A microphone 79 is housed in the sound pickup unit 77 of the microphone arm 76. The microphone 79 may be housed in the microphone arm 76 at a location other than the sound pickup section 77. The microphone 79
A signal line (not shown) coming out from the microphone arm 76 and the microphone arm connecting portion 72 is introduced into the recess 74 through the respective internal spaces thereof, and further connected to the driving device 4 through the internal space of the shaft 73.

In FIG. 1, reference numeral 11 denotes an acoustic cushioning material made of a soft foam resin for adjusting acoustic characteristics, and reference numeral 12 denotes a rectangular braking pad made of neoprene rubber or the like.

Next, an example of an assembling procedure will be described.

The assembling of the main body housing 1A and the assembling of the hanger 6 and the like are performed in the following manner. The shaft 61 of the hanger 6 is fitted into the bearing cover 33 of the outer housing 3. In this case, the large-diameter base portions 62 of the shaft portion 61 ride over the small protrusions 58 of the bearing cover portion 33 and are brought into contact with the bearing surfaces 57. As a result, the large diameter shaft portions 62, 62 are prevented from being removed by the small projections 58, 58, and the large diameter shaft portions 62, 62 are provided on the bearing surfaces 57, 57 with stepped portions 57a, 57a (FIG. 8) to prevent the shaft portion 61 from being displaced in the axial direction. Also,
The shaft portion 61 having a small diameter is supported by end faces 59a of the shaft support rib 59.

After the shaft 61 of the hanger 6 is fitted into the bearing cover 33 as described above, one end of the braking pad 12 is inserted into the gap between the shaft 61 and the engaging piece 56 of the bearing cover 33. 12a, the outer housing 3
The projections 27a, 27a (see FIGS. 5, 6, and 7) of the inner housing 2 on which the flat surface 27 is formed are inserted inside the engagement pieces 56 of the inner housing 2, and the sound absorbing material 11 is inserted into the inner housing 2. By closing both the housings 2 and 3 in a state of being interposed between the driving device 4 housed and held and the outer housing 3, the insertion piece 25 of the inner housing 2 is moved to the peripheral wall portion 3 of the outer housing 3.
1 and the engagement protrusion 2 of the inner housing 2.
4, 24 are engaged with the engagement recesses 35, 35 of the outer housing 3.
Is fitted and locked.

When the main housing 1A is assembled in this manner, a bearing hole 100 is formed by the bearing cover 26 of the inner housing 2 and the bearing cover 33 of the outer housing 3, and the shaft supporting ribs are formed as shown in FIGS. The small-diameter shaft portion 61 supported by the end surfaces 59a of 59 ... is in surface contact with the flat surface 27 via the braking pad 12.
It is pressed in. Therefore, the braking pad 12 is compressed by being pressed between the end faces 59a of the shaft supporting ribs 59 and the flat surface 27, and the shaft portion 61 is resiliently restored.
Are elastically pressed .

The signal line R derived from the driving device 4
Is drawn out of the main body housing 1A through the mating portion of the recess 20 of the inner housing 2 and the recess 34 of the outer housing 3. In addition, each said recessed part 20,3
4 is located on the opposite side of the bearing hole 100.

Incidentally, the cover 8 shown in FIG. 3 may be attached to the outer housing 3 of this embodiment.
It is also possible to attach the arm-side housing 7 of FIG. 4. When using as a headphone that does not require sound collection, the cover 8 is attached to the outer housing 3, and when using as a boom-phone type headset, the arm-side housing 7 is attached. Can be

When the cover 8 is attached to the outer housing 3, the fitting projections 82 for positioning are aligned with the wide extending holes 38A, and the engaging projections 81, 81 of the cover 8 are engaged with the flat portion 36 of the outer housing 3. It is inserted into the hole 54 and engaged.

The arm side housing 7 is connected to the outer cover 3
For example, the following procedure is used when attaching to the camera.

The microphone arm 7 is connected to the microphone arm connecting portion 72.
6 is inserted through the opening 37 on the outer housing 3 side, and at the same time, the wide projection 75A provided on the shaft 73 is passed through the wide extension hole 38A. The narrow protruding pieces 75B are inserted into the main body housing 1A through the narrow extension holes 38B. FIG. 9 illustrates the state of the wide protruding piece 75A at this time using a virtual line F1. Thereafter, when the arm-side housing 7 is rotated in the clockwise direction X (see FIGS. 8 and 9), the wide projection 75A and the narrow projection 7A are rotated.
5B is the slope 5 of the corresponding raised portion 53, 53
3a, 53a, the vehicle reaches the tops 51b, 51b of the first protrusions 51, 51, and then gets over the first protrusions 51, 51. In the state where the wide protruding piece portion 75A and the narrow protruding piece portion 75B pass over the first protrusions 51, 51, the imaginary lines F2, F3, F4 of the wide protruding piece portion 75A are shown in FIG.
As shown in FIG. 7, the wide projection 75A and the disk 71 cooperate to elastically clamp the flat plate 36. Further, since the wide protrusion 75A is disposed between the first protrusion 51 and the second protrusion 52, the rotation range of the wide protrusion 75A is determined by the corresponding first protrusion 51 and second protrusion 52. 8 and the angle range of θ shown in FIG. 9, and similarly, the rotation range of the narrow protruding piece portion 75 </ b> B corresponds to the first protrusion 51.
And the second projection 52 (in FIG. 9, the restricted range of the wide projection piece portion 75A is indicated by θ). The same applies to the narrow protrusion 75B.

FIG. 10 shows the cover 8 on the outer housing 3.
1 shows a state in which the hanger 6 of the headphone device to which is attached is locked to the pinna 200 of the right ear, and the headphone body 1 is attached to the pinna 200. FIG. 11 shows a case where the housing 6 of the headphone device configured as a boomphone type headset in which the outer housing 7 is attached to the outer housing 3 is locked to the pinna 200 of the right ear.
1 shows a state in which the headphone body 1 is mounted.

As shown in FIG. 10 and FIG.
The top portion 66 of the hooking rod portion 65 is positioned behind the pinna 200, and the hooking portion 65 is hooked around the pinna 200. By doing so, the main body housing 1A is housed in the pinna 200, and the sound hole 22 (see FIG. 1) of the inner housing 2 is arranged at an appropriate position with respect to the external auditory canal 201. The bent portions 68 of the hanger 6 are
When the hanging rod portion 65 is hooked on the auricle 200 and is hung, the hanger 6 contacts the upper and lower skin surfaces of the auricle 200 of the user.
It is useful for stabilizing the hooking state of the camera and exerting a good wearing feeling. Since the shape of the hanger 6 on both sides sandwiching the imaginary line CC perpendicular to the axis of the shaft portion 61 is symmetric, both the right pinna 200 and the left pinna remain in the same state. Can be hung.

Further, the main body housing 1A can be rotated about the shaft 61 of the hanger 6, and at the time of rotation, the resilient braking pad 12 presses the shaft 61 in a compressed state. The relative rotation position between the shaft portion 61 and the bearing hole portion 100 of the main body housing 1A can be arbitrarily and continuously determined. That is, when the main housing 1A is rotated around the shaft 61, the main housing 1A is fixed to the shaft 61 at the position where the rotation is completed. Moreover, since the braking pad 12 is pressed against the shaft portion 61 in a surface contact state, the main body housing 1A can be stably fixed at an arbitrary rotational position, and the durability of the braking pad 12 is improved. I do. Therefore, FIG.
In the use state as shown in FIG.
If A is too strong against pinna 200, main body housing 1A may be slightly rotated outward of pinna 200. Conversely, if main body housing 1A is too far from pinna 200, It is only necessary to slightly rotate the housing 1A toward the pinna 200, and by doing so, the main body housing 1A can be brought into contact with the pinna 200 in an appropriate state.

In the headphone device configured as a boomphone type headset, the position of the sound pickup unit 77 can be adjusted by moving the microphone arm 76. That is, the arm side housing 7 is rotated clockwise X or counterclockwise Y. Then, FIG.
As described for A, when the arm-side housing 7 is rotated in the counterclockwise direction Y and the wide protruding piece portion 75A comes into contact with the first protrusion 51 as shown by the imaginary line F2, the protrusion 75a on the lower surface thereof is When the arm-side housing 7 is rotated in the clockwise direction X and the wide protruding piece 75A comes into contact with the second protrusion 52 as indicated by the phantom line F3, the protrusion on the lower surface of the first groove 51a is fitted. 75a is the second groove 52
a. Although not shown, the same applies to the narrow protrusion 75B. Therefore, when adjusting the position of the sound pickup unit 77 by holding the microphone arm 76 by hand,
The protrusions 75a and 75b are used for the first groove 51a and the second groove 5
The user can get a click feeling by the touch when the fitting is made into the 2a and the touch when they hit the first projection 51 and the second projection 52.

The wide protruding piece 75A and the narrow protruding piece 75
B cooperates with the disk portion 71 to elastically clamp the flat plate portion 36. Therefore, even when the wide protruding piece portion 75A and the narrow protruding piece portion 75B do not contact the first protrusion 51 and the second protrusion 52, the above-described operation is performed. The arm housing 7 is fixed at that position by exerting the braking action by the elastic pressure clamping. Therefore, each projection 7
In the rotation range (the angle range of θ in FIGS. 8 and 9) in which 5A and 75B are located between the first projection 51 and the second projection 52,
The direction of the microphone arm 76 can be adjusted to an arbitrary direction without any step.

FIG. 12 shows the projections 75A, 75B when the headphone body 1 of the headphone device configured as a boomphone type headset is mounted on the pinna of the right ear.
FIG. 13 shows a state in which the position is regulated by the first protrusions 51, 51. FIG. 13 shows that the projections 75A, 75B when the headphone body 1 is attached to the auricle of the left ear are formed by the second protrusions 52, 52. The state where the position is restricted is shown.

As can be inferred from FIGS. 12 and 13, in this embodiment, when the arm-side housing 7 is attached to the main body housing 1A, the wide projection 75
A is inserted into the wide extension hole 38A, and the narrow protrusion 75B is inserted into the narrow extension hole 38B, so that the hanger 6 and the microphone arm 7 attached to the main housing 1A are inserted.
6 (the projecting direction of the microphone arm 76) is appropriately determined. Therefore, there is no room for assembling errors such that the projecting direction of the microphone arm 76 is reversed during assembly.

[0037]

According to the headphone device of the present invention, not only can anyone obtain an appropriate wearing feeling according to the ear shape of the individual, but also the same wearing feeling can be obtained in the right ear and the left ear. There is an effect that it can be. Also, on being constituted by the braking pads very simple shape, such as housing and the hanger and the rubber plate of the headphone body, the bearing holes is one
Formed by two bearing covers, one side and the other
And the bearing cover on the other side has a small
Since it is formed, there is an effect that assembly is easy. In addition, the brake pad is pressed against the shaft in surface contact.
The headphone body is stable at any rotational position.
And the brake pads are more durable
As a result, stable braking performance can be obtained over a long period of time.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a headphone device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing components of the headphone device.

FIG. 3 is a perspective view of a cover.

FIG. 4 is a perspective view showing an arm-side housing and the like.

FIG. 5 is a perspective view of an inner housing incorporating a speaker and a driving device.

FIG. 6 is a partial cross-sectional view of the headphone device.

FIG. 7 is a sectional view of a headphone device configured as a boomphone type headset.

FIG. 8 is a plan view showing the inner surface side of the outer housing.

FIG. 9 is an operation explanatory view of a first projection, a second projection, and the like showing a part of the outer housing in a developed state.

FIG. 10 is an explanatory diagram showing a state in which the headphone device of FIGS. 1 and 6 is mounted on the pinna of the right ear.

11 is an explanatory diagram showing a state in which the headphone device of FIG. 7 is attached to the pinna of the right ear.

FIG. 12 is an explanatory diagram showing an internal state of a main body housing in the headphone device of FIG. 7 attached to the pinna of the right ear.

13 is an explanatory diagram showing an internal state of a main body housing in the headphone device of FIG. 7 attached to the pinna of the left ear.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Headphone main body 6 Hanger 12 Braking pad 26, 33 Bearing cover part 27 Flat surface 28, 57 Bearing surface 57a Stepped part 58 Small protrusion 59a for shaft fixing End surface of shaft supporting rib (facing shaft part in bearing hole part) Surface) 61 shaft portion 65 locking rod portion 68 base portion CC virtual line perpendicular to the axis of the shaft portion 100 bearing hole portion 200 auricle

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-88014 (JP, A) JP-A-56-21498 (JP, A) Jiko 62-16059 (JP, Y2) Jiko 64-64 1835 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) H04R 1/10

Claims (1)

(57) [Scope of request for utility model registration] 1. A large base 68 having a circular cross section at both ends.
Latching is hooked to extend issued and the pinna 200 and straight shank 61 which is formed from both ends of the shaft portion 61 as the rod portion
And includes a hanger 6 both sides of the shape is symmetric sandwiching a virtual line orthogonal to comprise a 65 and the axis of the shaft portion 61, a bearing hole 100 for rotatably holding the shaft portion 61 of the hanger 6 Headphones with built-in speaker
1, a brake pad 12 having a resilient braking rotation of the upper Kijiku portion 61 has a said bearing hole portions 100, to hold in cooperation with the base portion 68
The two arcuate bearing surfaces 28 and 57 and the bearing surface 2
8 and 57, the shaft portion is engaged with the base portion 68 held by the shaft portion.
A stepped portion 57a for preventing displacement of the shaft 61 in the axial direction;
A flat surface 27 provided to face the shaft portion 61, and the braking pad 12 is supported by the flat surface 27
The bearing hole portion 100 is resiliently pressed in a surface contact state with the portion 61, and the bearing hole portion 100 is in contact with one of the bearing surfaces 28.
One bearing cover portion 26 having a bearing surface 27 and the other
The other bearing having the bearing surface 57 and the stepped portion 57a
The cover 33 and the other
The bearing surface 57 of the bearing cover 33 has a bearing surface 5
7 is brought into contact with the base 68 of the shaft 61
A small projection 58 for stopping the shaft is provided to prevent the part 68 from being removed.
Headphone and wherein the that.