JPH11102746A - Plug fall-out preventing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an earphone plug from falling out and facilitate attachment/ detachment and fixation by making the plug removably attachable next to a sleeve, and fixing the plug to the assembly side via a slip-off preventing tool laid across the sleeve and the plug. SOLUTION: A slip-off preventing tool which is fitted after connecting an earphone 3 to an assembly 2 has been made of elastic synthetic resin or rubber and provided with a groove slightly smaller in diameter than a sleeve 11, and a groove slightly smaller in diameter than a bendable cord holding part 17 of a plug. The opening part of each groove is slightly narrower than the maximum diameter. A connecting cord 10 of the assembly 2 is passed through one groove of the slip-off preventing tool 15, while a connecting cord 13 of the earphone 3 is passed through the other groove, and the slip-off preventing tool 15 is moved upward. Since the sleeve 11 is enlarged in diameter toward the upper side, the sleeve 11 is put in a press-fitted state soon thereafter, and the slip-off preventing tool 15 is fixed. Since a terminal holding part 19 of the plug 14 is larger in diameter than that of a cord holding part 17, the slip-off preventing tool 15 is retained in the position of the cord-holding part 17. The slip-off direction displacement of the plug 14 is therefore suppressed for preventing the plug 14 from falling out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug drop-off prevention structure for preventing a plug, such as an earphone, from dropping out when the plug is inserted into an assembly used for a radio or the like.

[0002]

2. Description of the Related Art The structure of a conventional assembly and insertion of an earphone plug will be described with reference to FIGS.

FIG. 8 shows a state in which an assembly 2 is connected to a radio unit 1 and an earphone 3 is connected to the assembly 2. The wireless device body 1 has a rectangular parallelepiped shape, an operation button 4 is provided on the front, and an antenna 5 is provided on the upper part.
Is protruding.

[0004] As shown in FIG. 9, the assembly 2 is composed of an operation unit 8 having a display unit 6 and an ON / OFF switch 7, a microphone 9, and a connection cord 10 for connecting to the radio unit 1. Configuration. The core of the connection cord 10 is connected to a wiring board (not shown) built in the operation section 8 by soldering or the like, and the diameter of the connection cord 10 becomes smaller as it goes downward.
1, and is fixed to the lower surface of the operation unit 8 by an appropriate method. The plug 12 provided at the end of the connection cord 10 is inserted into an assembly jack (not shown) provided on the upper part of the wireless device main body 1, and the assembly 2
Is connected to the wireless device main body 1.

[0005] The plug 14 at the tip of the connection cord 13 of the earphone 3 is inserted into an earphone jack (not shown) provided on the lower surface of the operation unit 8, and the earphone 3 is connected to the assembly 2. Thus, the earphone 3 is connected to the wireless device main body 1 via the assembly 2.

[0006]

In the above-mentioned conventional device, the plug 14 of the earphone 3 is simply inserted into the earphone jack provided on the operation unit 8, so that the connection cord 13 of the earphone 3 is connected during the operation. If the plug 14 gets caught on something, the plug 14 easily falls off easily. Also, while the plug 14 is repeatedly attached to and detached from the earphone jack, the fitting between the plug 14 and the earphone jack is loosened, and even if the connection cord 13 is not hooked on anything, an impact or the like may occur. As a result, there is a problem that the plug 14 easily falls off, which hinders the operation.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention provides a plug drop-off prevention structure that prevents an earphone plug from falling off from an earphone jack of an assembly, and enables easy attachment and detachment and fixation of the earphone plug. Improve.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a plug is detachably mounted along with the sleeve on an assembly having a connection cord fixed to a lower surface via a sleeve, and a stopper is provided so as to extend over the sleeve and the plug. Attached to the plug, the plug is prevented from falling off via the stopper, and the plug and the plug are prevented from falling off.
At least one of the stopper and the sleeve and the plug are made of an elastic material, and grooves are respectively formed in the stopper to correspond to small-diameter portions of the sleeve and the plug, after the plug is attached to the assembly. The present invention relates to a plug falling-off prevention structure in which the sleeve is sandwiched between grooves of the stopper, and at least one of the stopper and the sleeve and the plug is made of an elastic material. Also engraved a small-diameter groove, respectively, fit the plug into the groove of the stopper,
The stopper according to the present invention relates to a plug drop-off prevention structure in which the plug is attached to the assembly so that the stopper clamps the sleeve. Further, at least one of the stopper and the sleeve and the plug is made of an elastic material. Can be opened and closed via a hinge portion, and in the closed state, grooves are formed so as to form holes smaller in diameter than the sleeve and the plug, and after the plug is mounted on the assembly, the sleeve and the plug are removed. The present invention relates to a plug drop-off prevention structure for closing the stopper by passing through the respective grooves and holding the sleeve and the plug.

The plug and the stopper are fixed to the sleeve by utilizing the elasticity of the stopper or the sleeve and the plug to prevent the plug from dropping out of the jack provided on the assembly, and to attach and detach and fix the plug. And improve workability.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2
The same components as those in FIGS. 8 and 9 are denoted by the same reference numerals.

The assembly 2 includes a display unit 6 and an ON / OF.
The operation unit 8 has an F switch 7, a microphone 9, and a connection cord 10 for connecting to the radio unit 1. The core of the connection cord 10 is
The connection cord 10 is fixed to the lower surface of the operation unit 8 by a suitable method via a sleeve 11 having a smaller diameter as it goes downward, while being connected to a wiring board (not shown) built in the connector. ing. The sleeve 11
It is itself formed of an elastic material such as synthetic resin or rubber. As in the conventional example shown in FIG. 8, a plug 12 provided at the end of the connection cord 10 is inserted into an assembly jack (not shown) provided on the upper part of the radio unit 1, and the assembly 2 is connected to the radio. Machine body 1
Connect to

The plug 14 at the end of the connection cord 13 of the earphone 3 is inserted into an earphone jack (not shown) provided on the lower surface of the operation unit 8, and the earphone 3 is connected to the assembly 2. Thus, the earphone 3 is connected to the wireless device main body 1 via the assembly 2.

After the earphone 3 is connected to the assembly 2, the stopper 15 is attached. The stopper 15 is made of an elastic synthetic resin or rubber, corresponds to the sleeve 11 as shown in FIG. 2, has a groove 16 having a diameter slightly smaller than that of the sleeve 11, and the plug 14 is capable of bending. A groove 1 corresponding to the cord holding portion 17 and having a slightly smaller diameter than the cord holding portion 17;
8 is engraved, and the opening of the groove 16 is slightly narrower than the maximum diameter of the groove 16.

The connection cord 10 of the assembly 2 is passed through the groove 16 of the stopper 15 and the connection cord 13 of the earphone 3 is passed through the groove 18, and the stopper 15 is moved upward in FIG. . Since the diameter of the sleeve 11 increases as it goes upward, the sleeve 11 is pressed into the groove 16 and the stopper 15 is fixed to the sleeve 11. The plug 1
Since the terminal holding portion 19 of No. 4 has a larger diameter than the cord holding portion 17, the stopper 15 stays at the position of the cord holding portion 17.

The stopper 15 clamps the sleeve 11 by elasticity, restrains the displacement of the plug 14 in the detaching direction, and prevents the plug 14 from dropping from the earphone jack.

Next, referring to FIGS. 3 and 4, the second embodiment of the present invention will be described.
An embodiment will be described. 3 and 4,
1 are denoted by the same reference numerals, and description thereof will be omitted.

The stopper 20 is made of an elastic synthetic resin or rubber. The stopper 20 corresponds to the sleeve 11 as shown in FIG. The opening has a groove 22 slightly narrower than the maximum diameter corresponding to the cord holding portion 17.

The cord holding portion 17 is fitted into the groove 22, the connection cord 10 is passed through the groove 21, the plug 14 is inserted into an earphone jack provided on the lower surface of the operation portion 8, and the earphone 3 is Connect to assembly 2.

Since the diameter of the sleeve 11 increases as it goes upward, the sleeve 11 is held by the elasticity of the stopper 20. By inserting the plug 14 into an earphone jack, the groove 21 and the sleeve 11 are press-fitted. Thus, the plug 14 is prevented from falling off from the earphone jack.

Referring to FIGS. 5, 6 and 7, a third embodiment of the present invention will be described. In FIGS. 5 and 6, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

As can be seen from the developed view shown in FIG. 7, the stopper 23 is made of an elastic synthetic resin or rubber, and the holding pieces 23a and 23b can be opened and closed around a hinge portion 28.
Grooves 24a, 24b and grooves 25a, 25b are engraved on the joint surface in pairs. The holding piece 23 of the stopper 23
A hook 26 extends perpendicularly to the joint surface at an end opposite to the hinge portion 28 of FIG. 2B, and a hooking portion is provided at an end of the holding piece 23a opposite to the hinge 28 so as to correspond to the hook 26. 27 is recessed.

The holding pieces 23a and 23b are folded in two,
When the hook 26 is hooked on the hook portion 27, the holding pieces 23a and 23b are closed and the grooves 24a and 2b are closed as shown in FIG.
4b corresponds to the terminal holding portion 19 of the plug 14 and forms a hole 24 having a diameter slightly smaller than that of the terminal holding portion 19;
Reference numerals a and 25b correspond to the sleeve 11 and have a structure in which a hole 25 having a diameter slightly smaller than that of the sleeve 11 is formed.

As shown in FIG. 5, the plug 14 is inserted into an earphone jack provided on the lower surface of the operation unit 8, and the earphone 3
After the connection to the assembly 2, the terminal holding portion 19 is held in the hole 24, and the sleeve 11 is inserted in the hole 25.
The sleeve 11 and the terminal holding portion 19 are sandwiched by the stopper 23 so that the stopper 23 is held, and the stopper 23 is attached. As described above, since the holes 24 and 25 of the stopper 23 are slightly smaller in diameter than the terminal holding portion 19 and the sleeve 11, the stopper 23 is firmly fixed by elasticity and does not slide down.

The plug 14 is connected to the stopper 2
3. Since it is fixed to the operation section 8 of the assembly 2 via the sleeve 11, it is prevented from falling off from the earphone jack.

[0026]

As described above, according to the present invention, by fixing the plug to the assembly side via the stopper, it is possible to prevent the earphone plug from falling off from the assembly and to easily attach and detach and fix the earphone plug. Therefore, an excellent effect that workability is improved is exhibited.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is an explanatory diagram showing a second embodiment of the present invention.

FIG. 4 is a view taken in the direction of arrow B in FIG. 3;

FIG. 5 is an explanatory diagram showing a third embodiment of the present invention.

6 is a view as viewed in the direction of the arrow C in FIG. 5;

FIG. 7 is a developed view of a stopper according to a third embodiment of the present invention.

FIG. 8 is an overall schematic explanatory diagram according to a conventional example.

FIG. 9 is an explanatory diagram of a main part according to a conventional example.

[Explanation of symbols]

 2 Assembly 10 Connection Cord 13 Connection Cord 14 Plug 15 Detachment Tool 16 Groove 17 Cord Holder 18 Groove 19 Terminal Holder 20 Detachment Tool 21 Groove 22 Groove 23 Hook Tool 24 Hole 25 Hole 28 Hinge

Claims (4)

[Claims] 1. A plug which can be attached and detached along with the sleeve to an assembly to which a connection cord is fixed on a lower surface via a sleeve, and a stopper is attached so as to hang over the sleeve and the plug. A plug falling-off prevention structure, wherein the plug is prevented from falling off. 2. The sleeve and the plug each have a shape having a smaller diameter toward a connection cord, and at least one of the stopper and the sleeve and the plug is made of an elastic material. 2. A plug falling-off prevention structure according to claim 1, wherein grooves corresponding to portions having a small diameter are formed, respectively, and said sleeve is held in said groove of said stopper after said plug is mounted on said assembly. 3. The stopper and / or at least one of the sleeve and the plug is made of an elastic material, and grooves having a smaller diameter than the sleeve and the plug are formed on the stopper, respectively, and the plug is inserted into the groove of the stopper. 2. The plug falling-off prevention structure according to claim 1, wherein said stopper is fitted to said assembly so that said stopper holds said sleeve when said plug is attached to said assembly. 4. The stopper or at least one of the sleeve and the plug is made of an elastic material, and the stopper is openable and closable via a hinge portion. When the stopper is closed, a hole having a smaller diameter than the sleeve and the plug is formed. 2. A plug dropper according to claim 1, wherein grooves are formed so as to be formed respectively, and after the plug is mounted on the assembly, the sleeve and the plug are respectively passed through the grooves to close the stopper and the sleeve and the plug are clamped. Prevention structure.