Audio plug

• US 20050208783A1
• Filed: 03/15/2005
• Published: 09/22/2005
• Est. Priority Date: 03/17/2004
• Status: Active Grant

• Current Assignee: JAMCO Corporation
• Original Assignee: JAMCO Corporation
• Inventors: Suzuki, Jun, Suzuki, Shigeo
• Granted Patent: US 7,056,127 B2
• Time in Patent Office: Days
• US Class Current: 439/42
• CPC Class Codes: H01R 13/6205 Two-part coupling devices held in engagement by a magnet
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/58 Contacts spaced along longitudinal axis of engagement
• CPC Class Codes: H01R 31/06 Intermediate parts for linking two coupling parts, e.g. adapter with a holder adapted for supporting apparatus to which its counterpart is attached H01R33/94
• CPC Class Codes: Y10S 439/923 Separation or disconnection aid

Abstract

The invention provides an audio plug capable of preventing excessive stress from being applied to a plug by enabling a plug body to be detached from a plug-in portion equipped with a channel plug, thus preventing damage and deterioration of function of the plug or a connecting portion between a cable and the plug. An audio plug 1 is equipped with a plug body 2 connected to a cable 3 leading to a headset, and an adapter 20 having channel plugs 30 and 31 that can be plugged into a jack 73, capable of transmitting audio signals from the jack 73 to the plug body 2 when attached. Since the adapter 20 is detachably attached to the plug body 2 by magnetic force, when a force greater than the magnetic force is applied from the cable 3, the plug body 2 is detached from the adapter 20 leaving the adapter 20 plugged into the jack 73, thus preventing poor contact or disconnection caused by excessive force applied to a connecting portion 5 of the cable 3.

Claims

1. An audio plug comprising:

a plug body connected to a cable leading to a headset; and

an adapter having a channel plug to be plugged into a jack and capable of being detachably attached by magnetic force to the plug body, the adapter capable of transmitting an audio signal between the plug body and the channel plug in an attached state.

2. The audio plug according to claim 1, wherein the plug body is equipped with a projection having a first channel contact for transmitting the audio signal, and the adapter is equipped with a recess which receives the projection when the adapter is attached to the plug body, the recess having a second channel contact which can be in contact with the first channel contact when the projection is received in the recess.

3. The audio plug according to claim 2, wherein the plug body is equipped with two said projections that are mutually separated, each having a left or a right first channel contact, respectively, for transmitting the audio signal in stereo, and the adapter is equipped with two said recesses that correspond to the two projections, each recess having a left or a right second channel contact, respectively, which can be in contact with the left and right first channel contacts.

4. The audio plug according to claim 2, wherein the plug body is equipped with a single said projection having left and right first channel contacts disposed concentrically for transmitting the audio signal in stereo, and the adapter is equipped with a single said recess corresponding to the projection, the recess having left and right second channel contacts disposed concentrically and capable of being in contact with the left and right first channel contacts, respectively.

5. The audio plug according to claim 2, having a magnet disposed on one of a top end of the projection or a bottom of the recess, and having a magnetic member disposed on the other, which is capable of magnetically attracting the magnet.

6. The audio plug according to claim 2, having a magnet disposed on one of annular walls of the plug body or the adapter which are in confronting relationship in the attached state, and having a magnetic member disposed on the other annular wall, which is capable of magnetically attracting the magnet.

7. The audio plug according to claim 1 capable of being applied by plugging into a jack provided on an audio equipment equipped on a vehicle such as an aircraft, a railway car, a ship or a camping car.