JPH0136395Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an auricular-insertion type earphone.

[Technical background of the invention]

As shown in Fig. 8, earphones of the auricular insertion type are used by being inserted into the concha cavity a of the ear. It's starting to feel like it's being held down.

FIG. 9 shows a conventional pinna-insertion earphone, in which 1 is a synthetic resin housing with an opening 2 formed around it, 3 is a connector housing attached to the rear of the housing 1, This connector housing 3 is provided with a collar 4 through which a cord 5 is inserted.

Reference numeral 6 denotes a driver unit provided within the housing 1. The driver unit 6 is supported by a frame 7, and a protector 8 having sound emitting holes 8a, 8a is provided on the front surface of the driver unit 6. Note that 9 is a terminal plate of the driver unit 6.

Further, 10 is a grill that covers the front surface of the driver unit 6, and 11 is a waterproof screen provided inside the grill 10. The grill 10 is made of a metal plate such as stainless steel.
A large number of small-diameter sound emitting holes 10a, 10a are provided.

The grill 10 is fitted into the frame 7 of the driver unit 6 from above the screen 11 placed on the protector 8, and is fixed to the housing 1 by fitting a ring 12 around the outer periphery of the grill 10 and the housing 1. has been done.

[Problems with background technology]

However, since the above-mentioned conventional earphone uses a metal plate such as a stainless steel plate etched to form the sound emitting holes 10a as the grill 10, the grill 10 is expensive. Since the ring 12 must be used to attach the grille 10 to the housing 1, the assembly workability is poor and the assembly cost is also high, resulting in an increase in cost.

Further, in the conventional earphones described above, since the grille 10 is attached to the housing 1 by the ring 12, the ring 12 is visible on the outer surface and the appearance is bad.
Furthermore, since the grill 10 is made of metal, not only does it feel cold and uncomfortable when worn on the ear, but metal grills also generate vibrations that are characteristic of metal, so they cannot be used for long periods of time. It also had the disadvantage that the vibrations from the grill made my ears hurt.

[Purpose of invention]

This idea was created in view of the above-mentioned circumstances, and its purpose is to reduce the price of the grill and to make it easier to attach the grill to the housing without using a ring as in the past. to reduce costs,
Another object of the present invention is to provide earphones that have a simple and aesthetic appearance, are comfortable to wear, and do not cause ear pain even when used for a long time.

[Summary of the idea]

That is, in this invention, the grill is made of soft synthetic resin, and the grill has a rising edge on its outer periphery that fits into the outer periphery of the housing,
In addition, the tip side of this rising edge is inclined inward so as to wrap around the tapered portion on the back side of the outer peripheral surface of the housing, and the rising edge of the grille is pushed into the outer periphery of the housing and fitted. Attached to the housing,
A portion of the housing into which the grille fits is recessed so that the outer surface of the housing and the outer periphery of the rising edge of the grille are a continuous surface.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings.

Figures 1 and 2 show cross sections of the earphone;
3 to 7 show the external appearance of the earphone.

To explain the structure of this earphone, in the figure, 21 is a synthetic resin housing with openings 22, 22 formed around it, 23 is a connector housing attached to the rear of the housing 21, and 24 is a collar through which the cord is inserted. be.

26 is a driver unit provided in the housing 21, and 27 is this driver unit 26.
A protector 28 having large diameter sound emitting holes 28a, 28a is provided on the front surface of the driver unit 26. 29 is a terminal plate of the driver unit 26, and this terminal plate 29 is provided on the back surface of the frame 27.

Further, 30 is a grill that covers the front surface of the driver unit 26, and 31 is a waterproof screen provided inside the grill 30.

The grille 30 is made of a soft synthetic resin such as silicone rubber, and the front surface of the grille 30 is provided with a large number of small-diameter sound emitting holes 30a, 30a in the area indicated by the two-dot chain line in FIG. There is. This grille 30 has a shape on its outer periphery with a rising edge 30b that fits into the outer periphery of the housing 21. It has a shape that slopes inward so that it wraps around. Further, on the inner periphery of this rising edge 30b, ring-shaped recesses 32, 32 are formed in upper and lower stages to fit and engage with the ring-shaped protrusions 21a, 21a formed in upper and lower stages on the outer peripheral surface of the housing 21. has been done.

And, this grill 30 has its rising edge 3
0b is pushed into the outer periphery of the housing 21, and the concave portions 32, 32 are fitted and engaged with the convex portions 21a, 21a of the housing 21, thereby being attached to the housing 21 so as not to come off unnecessarily. Further, the portion of the housing 21 into which the rising edge 30b fits is recessed to a depth that is approximately the same as the wall thickness of the rising edge 30b.
is attached to the housing 21 so that its outer surface is flush with the outer surface of the housing 21.

However, in this earphone, the grill 3
0 is made of soft synthetic resin such as silicone rubber, molding of the grill 30 is extremely easy, and the sound emitting holes 30a, 30a formed in the grill 30 are
The grille 30 can be easily formed by punching or the like, so the price of the grille 30 can be significantly reduced compared to conventional metal grilles.Furthermore, this grille 30 can be directly attached to the housing 21 without using a ring as in the past. The manufacturing cost of these earphones is considerably lower than that of conventional earphones because they can be easily installed by fitting them into the earphones.

In addition, in this earphone, the grille 30 is directly fitted into the housing 21 without using a ring as described above, so the appearance is simple as shown in FIGS. Its aesthetic appearance can be improved.

Furthermore, since the grille 30 of this earphone is made of synthetic resin, it feels soft when worn on the ear, so it is comfortable to wear, and there is no vibration like with metal grilles, so even when used for a long time. It doesn't hurt my ears.

Furthermore, in this earphone, the rising edge has a shape in which the distal end thereof is inclined inward so as to wrap around the outer peripheral surface of the housing, and the outer surface of the housing and the outer surface of the rising edge of the grille form a continuous surface. This makes it difficult for the grill to fall out of the housing and provides a smooth fit.

[Effect of idea]

According to this invention, the price of the grill can be reduced, and the grill can be easily attached to the housing without using a ring as in the past, reducing costs. They also feel comfortable to wear, and your ears won't hurt even if you use them for a long time.

Further, the rising edge has a shape in which the tip thereof is inclined inward so as to wrap around the outer peripheral surface of the housing, and the outer surface of the housing and the outer surface of the rising edge of the grille are a continuous surface. This has the effect that the grille does not easily come off from the housing, and it feels smooth when worn.

[Brief explanation of the drawing]

Figures 1 to 7 show an embodiment of this invention, in which Figure 1 is a cross-sectional view taken along the - line in Figure 3, Figure 2 is a cross-sectional view taken along the - line in Figure 4, 3 is a plan view of the earphone, FIG. 4 is a front view of the earphone, FIG. 5 is a bottom view of the earphone, and FIGS. 6 and 7 are left and right side views of the earphone. FIG. 8 is a usage state diagram of the auricle insertion type earphone, and FIG. 9 is a sectional view of the conventional earphone. 21...Housing, 26...Driver unit, 30...Grill, 30b...Rising edge.

Claims (1)

[Scope of utility model registration request] In an earphone in which a driver unit is provided in a housing and a front surface of the driver unit is covered with a grill, the grill is made of soft synthetic resin, and the grill has a rising edge on its outer periphery that fits into the outer periphery of the front housing. , and this rising edge has a shape in which the leading end thereof is inclined inward so as to wrap around the outer peripheral surface of the housing and the tapered part on the back side, and the rising edge of the grille is pushed into the outer periphery of the housing. An earphone that is fitted and attached to the housing, and that a portion of the housing into which the grill fits is recessed so that the outer surface of the housing and the outer surface of the rising edge of the grill are continuous surfaces.