JPH0540635Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a headphone, and more specifically, to a connection part that detachably connects an electroacoustic transducer unit housed in the headphone body and an external connection cord. .

[Technical background of the invention] In a headphone or a headset having a headphone and a microphone, a cord is attached to the headphone body such as a unit case to be connected to an external electrical device. In order to facilitate handling of the cord during storage or repair of the cord, it is widely practiced to connect the headphone body and the cord with a connector. Being able to separate the headphone body and the cord using a connector is convenient because it allows the user to connect a cord that matches the equipment he or she owns, and is particularly convenient for headset devices that have many connection wires.

Since the cord comes out directly from the headphone etc., it is undesirable from the viewpoint of usability and design to make that part unnecessarily large by using a connector. Furthermore, it is also undesirable that attaching the connector to the headphone body makes it difficult to repair the inside of the headphone body.

The connector can be attached to the headphone body by providing a flange with a screw hole at the tip of the connector, and then attaching this flange to the side surface of the headphone body and fixing it to the headphone body with screws, or by attaching a screw groove to the outer periphery of the connector. At the same time, a screw hole for inserting the connector is provided in the headphone body to screw into this screw groove, and the connection is fixed by rotating the connector. However, in the former case, it takes up a lot of space and requires a screwdriver etc. when repairing. Requires tools. In addition, in the latter case, it is necessary to rotate the connector when installing it, so if you fix the connector after connecting the connector terminal and the electroacoustic unit with the lead wire, the lead wire will be twisted.
There is a high possibility that wire breakage or shorting between terminals will occur, and this point is the same even when the connector is removed during repair. In order to avoid this drawback, it is conceivable to connect the lead wires after fixing the connector, but it is obvious that the assembly and repair work would be difficult. Furthermore, in this latter method, since the thread cutting position cannot be made constant, the pin position of the connector with respect to the headphone body is not constant, making it difficult to connect with the plug.

[Purpose of the invention] The purpose of the invention is to improve the drawbacks of the conventional connector connection method for headphone as described above, and to make it extremely easy to attach and detach the connector to and from the headphone body.

[Structure of the invention] This invention is a headphone in which an electroacoustic conversion unit housed in the headphone body and an external connection cord are removably connected. A hollow body integrally provided in the headphone body communicates with the connector inside the headphone body and inserts and supports the connector so that it can be moved in the axial direction but not rotated, and a hollow body formed on the inner circumferential surface of the connector on the outer periphery of the connector. The connector has an outer circumferential thread groove, and a rotating nut that is rotatably inserted into the hollow body so that a part of the thread protrudes from the outer periphery of the hollow body. It is characterized by moving in the axial direction.

[Embodiment] Hereinafter, an embodiment of this invention shown in the drawings will be described. This headphone unit 1 has a substantially conical bonnet in which an ear pad 2 that is placed on the user's ear is fitted into an opening at one end in the axial direction. Case 3
and a unit case 4 that is fitted into an opening at the other end of the bonnet case 3 in the axial direction.

As shown in detail in FIG. 2, the unit case 4 has a disc-shaped bottom plate 5 serving as the bottom, and a side wall 6 provided to surround the bottom plate 5. An electroacoustic conversion unit is housed therein. A headband receiving part 7 and a connector receiving part 8 are provided on the side wall 6 at intervals of approximately 180 degrees in the circumferential direction and project outward in the diametrical direction. The headband receiving part 7 is for supporting one end of the headband (not shown), and is open at the top and has a substantially rectangular cross section.The connector receiving part 8 is open at the top and has a cross section of approximately U. It has a letter shape.

A cylindrical connector receiving ring 10 is integrally provided at the distal end of the connector receiving portion 8 with a gap 9 in between so as to connect the bottom thereof. The axis of the connector receiving ring 10 is located in the same direction as the extending direction of the connector receiving portion 8, and a flat portion 11 extending parallel to the axis of the connector receiving ring 10 is formed on a part of the inner peripheral surface thereof. ing. A substantially rectangular elongated hole 12 is provided in the connector receiving portion 8 on the rear end side of the connector receiving ring 10 in the circumferential direction. A band-shaped flange 13 is integrally provided on the outer periphery of the side wall 6 of the unit case 4 over approximately 180 degrees around the connector receiving portion 8, and a rim 1 is attached to the connector receiving portion 8 of the flange 13
3a is integrally provided. The tip of the rim 13a is connected to the connector receiving ring 10.

A ring-shaped nut 14 whose inner surface is threaded is rotatably inserted into the gap 9 between the connector receiving portion 8 and the connector receiving ring 10. An anti-slip knurl is cut on the outer periphery of the rotary nut 14, and a portion of this outer periphery protrudes inwardly from the elongated hole 12. Connector receiving ring 10
The connector 15 is inserted into the connector receiving portion 8 from above. A rotating nut 1 is attached to the outer periphery of the connector 15.
4 is provided with a thread groove that engages with the thread on the inner circumferential surface of the connector receiving ring 10.
A flat portion 16 that abuts is provided. That is, the connector 15 is inserted into the connector receiving ring 10 using the flat portion 16 such that it is movable in the axial direction but cannot rotate.

Reference numeral 17 is a screw hole for connection to the bonnet case 3, and reference numeral 18 is a hole for attaching a microphone arm (not shown).

Next, the assembly and disassembly of this headphone will be explained. First, the rotating nut 14 is inserted into the gap 9 between the connector receiving portion 8 of the unit case 4 and the connector receiving ring 10. Next, the lead wire of the electroacoustic transducer unit is soldered to the pin of the connector 15 to electrically connect the two. Connect the flat part 16 of the connected connector 15 to the connector receiving ring 1
When the tip of the thread groove of the connector 15 contacts the thread on the inner peripheral surface of the rotary nut 14, the rotary nut 14 is rotated. As a result, the connector 15 is inserted into the connector receiving portion 8 through the rotating nut 14. As the flange portion of the connector 15 comes into contact with the end face of the connector receiving ring 10, the connector 15 is firmly fixed to the unit case 4.

When removing the connector 15 for repair or the like, the connector 15 is sent out from the connector receiving ring 10 by rotating the rotary nut 14 in the opposite direction to that described above. Once the rotating nut 14 is unscrewed, the connector 15 can be pulled out from the connector receiving ring 10. And if you unsolder the lead wire,
Connector 15 is removable.

[Effects of the invention] As described above, in the headphone of this invention, the connector can be fixed to or removed from the headphone body by an extremely simple operation of rotating the rotary nut. When removing the connector, there is no need to remove other parts such as the bonnet. Furthermore, by providing flat parts on the connector and the connector receiving ring, and inserting the headphone so that these flat parts are in contact with each other, the positioning of the connector's connecting pins with respect to the headphone body is also constant, making the connection with the plug easier. becomes even easier.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an embodiment of this invention, and FIG. 2 is an exploded perspective view showing the connection between the unit case and the connector. In the drawings, 1 is a headphone unit, 4 is a unit case, 8 is a connector receiving part, 9 is a gap, 10 is a connector receiving ring, 11 and 16 are flat parts, 14 is a rotating nut, and 15 is a connector.

Claims (1)

[Claims for Utility Model Registration] (1) In a headphone in which an electroacoustic conversion unit housed in a headphone body and an external connection cord are detachably connected, the electroacoustic conversion unit and the external connection cord are connected. a cylindrical connector, a hollow body integrally provided with the headphone body that communicates with the headphone body and inserts and supports the connector so as to be movable in the axial direction but not rotatable; and an inner circumferential surface. a rotary nut having a thread groove that is threadedly engaged with an outer peripheral thread groove formed on the outer periphery of the connector, and rotatably inserted into the hollow body so that a part of the nut protrudes from the outer periphery of the hollow body; 1. A headphone characterized in that the connector is moved in its axial direction by rotating the rotary nut. (2) In claim 1 of the utility model registration claim, a flat part extending in the axial direction is formed on a part of the outer periphery of the connector, and the outer peripheral thread groove is provided on the outer peripheral surface excluding the flat part. The headphone is characterized in that the inner peripheral surface of the hollow portion has a surface that comes into contact with the flat portion, and rotation of the connector is restricted by the flat portion and the abutting surface.