JPS6228152Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a headphone that slidably connects a horn unit portion and a headband.

In conventional headphones, especially small and lightweight headphones, the headband slide mechanism has a resin arm attached to the horn unit, and the end of the headband slides within this arm. Ta. However, in this structure, since the arm part is made of resin, it is difficult to form it into a pipe shape, and therefore a cover is required on the back side of the arm part. Therefore, there is a limit to how thin and small such an arm portion can be made, and the number of parts increases, making it unsuitable for the purpose of reducing the size and weight of a headphone.

Therefore, the present invention is an attempt to solve the above-mentioned drawbacks.The arm part to which the horn unit is attached is made of light metal and formed into a pipe shape, and the end of the headband is slidably inserted into this arm part. The purpose of the present invention is to provide a headband that can be constructed to be thin and lightweight, and is optimal for a small and lightweight headphone.

Hereinafter, the present invention will be explained based on the embodiments shown in the drawings. Fig. 1 is a front view of the headphone according to the invention, Fig. 2 is a side view of the same, and Fig. 3 is an enlarged side view showing the main parts of the slide mechanism. 4 is a left side view of FIG. 3, and FIG. 5 is an exploded perspective view of a connecting portion between the horn unit and the arm of the headphone.

In the above drawing, 1 is a headphone and 2 is a headphone.
Reference numerals a and 2b are left and right horn unit parts into which ear pads made of sponge are fitted, and 3a and 3b are connection parts between the horn unit parts 2a and 2b. 4a, 4
Reference numeral b denotes left and right arm parts made of light metal and formed into a rectangular pipe shape.The lower halves of the arm parts 4a and 4b are bent at a predetermined angle, and the inner surfaces of the bent parts are A cutout hole 5 of the shape is formed. Moreover, the lower end portions 6a, 6 of the arm portions 4a, 4b
b is drawn into a cylindrical shape in order to draw out the cords 7a and 7b. Reference numeral 8 designates a thin strip-shaped headband made of elastic metal, and the ends of the headband are slidably inserted into the arm portions 4a and 4b from the upper end, respectively.

Next, the connecting parts 3a and 3b of the horn unit parts 2a and 2b will be explained with reference to FIG. 5. Since both the connecting parts 3a and 3b have the same structure and function, only one will be explained.

In the figure, reference numeral 9 denotes a connecting body made of synthetic resin, and the connecting body is integrally formed with a disk portion 10 and a cylindrical wall portion 11 on its outer periphery. This cylinder wall part 1
An eaves portion is formed at one end of the case 1, and comes into contact with an end surface of a case 22, which will be described later. A boss 12 is protruded from the center of the disk portion 10, and this boss 12
is divided into two parts by a vertical groove 13 so as to be flexible, and a spherical hole 14 is formed in each opposing surface. Further, on the outer periphery of the disc portion 10, a pair of locking pawls 1 each having an outward elastic force are formed by a notched groove 15 connected to the vertically divided groove 13.
6a, 16b are provided, and the claw 16
Locking grooves 17a and 17b are formed in the bases of arms a and 16b, respectively, to fit into the upper end 5a and lower end 5b of the notch hole 5 formed in the arm portion 4a.
Reference numerals 18a and 18b are holes used to push the locking claws 16a and 16b inward, respectively.

On the other hand, a cylindrical portion 19 that is housed in the cylindrical wall portion 11 of the connecting body 9 is protruded from the center of the back surface (outer surface) of the horn unit portion 2a.The outer diameter of this cylindrical portion 19 is as follows. It is set to be considerably smaller than the inner diameter of the cylindrical wall portion 11 so that it can move freely within the cylindrical wall portion 11. Further, a horizontal bar portion 20 is formed in the diametrical direction of the cylindrical portion 19, and the horizontal bar portion 20
A spherical body 21 having the same diameter as the spherical hole 14 is integrally formed in the center of the spherical hole 14 . That is, the sphere 21
and the spherical hole 14 constitute a spherical joint.

Reference numeral 22 denotes a ring-shaped case, and the same wall of the case 22 has a window hole 23 into which the bent portion of the arm portion 4a fits. The inner diameter of the case 22 is set to be the same as the outer diameter of the cylindrical wall portion 11 of the connecting body 9. 24 is a name plate whose outer diameter is set to be the same as the inner diameter of the case 22.

Next, the assembly of the connecting portion 3a will be explained. First, insert the connecting body 9 into the case 22 and direct the locking claws 16a, 16b toward the window hole 23 of the case 22, then insert bent pliers into the holes 18a, 18b of the connecting body 9 and tighten them. The locking claws 16a and 16b are each pushed inward to narrow the gap between them. Next, the bent part of the arm part 4a is inserted into the window hole 23 of the case 22, and the locking claws 16a, 16b with the narrowed spacing are inserted into the notch hole 5, and the narrowing part added to the locking claws 16a, 16b is inserted. When the attachment force is released, the locking claws 16a and 16b expand outward due to the restoring force, and the upper ends 5a and 5b of the cutout hole 5 fit into the locking grooves 17a and 17b, respectively, and the arm portion 4a becomes the connecting body. It is fixed at 9.

As a result, the arm portion 4a, the connecting body 9, and the case 22 are integrated, and their positions are fixed without being accidentally shifted or rotated. Further, since the eaves portion of the connecting body 9 comes into contact with the end surface of the case 22, the fixing is more secure. Thereafter, the horizontal bar portion 20 of the cylindrical portion 19 protruding from the outer surface of the horn unit portion 2a is aligned with the vertical groove 13 of the boss 12, and the cylindrical portion 19 is inserted into the cylindrical wall portion 11.
When pushed in, the sphere 21 formed on the horizontal bar portion 20 pushes out the vertical groove 13 of the boss 12 and fits into the spherical hole 14. Thereby, the horn unit portion 2a is rotatably connected to the connecting body 9.
In addition, the cord 7 connected to the horn unit part 2a
a extends from the notch groove 15 of the connecting body 9 through the notch hole 5 and is pulled out from the lower end 6a of the arm portion 4a. Finally, the name plate 24 is fitted into the case 22 and attached to the outer surface of the connecting body 9, that is, the side opposite to the boss 12.

As described above, in the present invention, the end of the headband 8 is slidably formed at one end of the pipe-like arm parts 4a, 4b molded to match the side shape of the head, and the other end is provided with a cord. Insert 7a and 7b,
A notch hole 5 is formed in the intermediate side portion of the arm portions 4a, 4b, and the cords 7a,
7b and connect it to the horn unit part, and also connect the claws 16a and 16b provided in the horn unit part.
and the notch holes 5 of the arm parts 4a, 4b are engaged and fixed, so the arm parts 4a, 4b can be manufactured easily and inexpensively, and the pipe-shaped arm part 4
Since a and 4b can be made of light metal such as aluminum, they can be thin and lightweight, have high mechanical strength, and have an excellent appearance, making them particularly suitable for small and lightweight headphone.

[Brief explanation of the drawing]

Fig. 1 is a front view of the headphone according to the present invention, Fig. 2 is a side view of the same, Fig. 3 is an enlarged side view showing the main part of the slide mechanism, Fig. 4 is a left side view of Fig. 3, and Fig. 5 is an exploded perspective view of the connecting part between the horn unit part and the arm part of the headphone. 1...Headphone, 2a, 2b...Horn unit part, 3a, 3b...Connecting part, 4a, 4b...
...Arm portion, 5...Notch, 7a, 7b...Cord, 8...Headband, 16a, 16b...
nail.

Claims (1)

[Scope of utility model registration request] The end of the headband is slidably formed at one end of a pipe-shaped arm that is molded to match the side shape of the head, and a cord is inserted into the other end.
A notch hole is formed in the middle side of the arm part,
In the headphone, the cord is taken out from the cutout hole and connected to the horn unit, and the claw provided in the horn unit and the cutout hole in the arm are engaged and fixed.