JPH10172667A - Structure for preventing contact from being brought into contact with another due to erroneous fitting of multicore connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent contact of unintended combinations of a plurality of socket contacts of a plug and a plurality of pin contacts of a receptacle in multicore connectors. SOLUTION: Three insulator guide keys 6 installed in an insulator 4 housed in the inside of a plug 1 are made to have different sizes and the keys 6 are installed at asymmetric angular positions in relation to the center of the plug 1. Corresponding to that, three insulator guide key grooves 16 formed in an insulator 14 housed in the inside of a receptacle 11 are made to have different sizes and the key grooves 16 are formed at asymmetric angular positions in relation to the center of the receptacle 11. As illustrated in the figure (a), in the case the sizes and the angular positions of the three keys 6 and the sizes and the angular positions of the three key grooves 16 are not conformed at the three points U, V, and W, the plug 1 and the receptacle 11 are not mutually fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a contact from being connected by incorrectly fitting a plug and a receptacle in a multi-core connector.

[0002]

2. Description of the Related Art A conventional multi-core circular connector is composed of a plug and a receptacle, the fitting of which is provided in one outer guide keyway provided in the outer shell of the plug, and in the outer shell of the receptacle. This is achieved by matching the single outer shell guide key.

[0003]

As in the case of the conventional multi-core circular connector, only one set of the outer shell guide key groove and the outer shell guide key is provided, or the plug is fitted into the receptacle. If the opening is large, even if the outer guide key groove does not match the outer guide key, the tip of the plug slightly enters the mating surface of the receptacle, and the multiple socket contacts of the plug and the receptacle However, there is a problem that the plurality of pin contacts contact in an unintended combination.

Accordingly, the present invention improves the disadvantages of the conventional multi-core circular connector described above, and in the multi-core connector, the unintended combination of a plurality of socket contacts of a plug and a plurality of pin contacts of a receptacle is used. It is an object of the present invention to prevent, in other words, prevent fitting of a plug into a receptacle at an incorrect relative angle.

[0005]

The present invention employs the following means to solve the above-mentioned problems.

(1) A plurality of insulator guide keys having different dimensions are provided on an insulator housed inside a plug, and a plurality of insulator guides having different dimensions from the insulator housed inside a receptacle corresponding to the insulator guide keys. A contact contact prevention structure due to incorrect fitting of a multi-core connector configured with a keyway.

(2) A plurality of insulator guide keys are provided at an asymmetrical angular position with respect to the center axis of the plug of the insulator housed inside the plug, and the insulator housed inside the receptacle corresponding to the insulator guide key. A contact contact preventing structure due to erroneous fitting of a multi-core connector formed by providing a plurality of insulator guide key grooves at asymmetrical angular positions with respect to the center axis of the receptacle.

(3) The contact contact preventing structure according to (2), wherein the plurality of insulator guide keys have different dimensions, and the plurality of insulator guide key grooves have different dimensions.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows various views of a plug 1 and a receptacle 11 constituting a multi-core round cable connector, and FIG.
Is a perspective view of the plug 1, (b) is a front view of the plug 1,
(C) is a sectional view and a side view passing through the central axis of the plug 1,
(D) is a perspective view of the receptacle 11, (e) is a front view of the receptacle 11, (f) is a cross-sectional view and a side view passing through the center axis of the receptacle 11.

The ready-made cylindrical outer shell 2 of the plug 1 includes:
An outer shell guide keyway 3 is provided. An insulator 4 is inserted into the outer shell 2, and the insulator 4 is a triangular prism having a curved top surface. Three socket contacts 5 are provided inside the insulator 4, and insulator guide keys 6 are provided near the center of the three outer surfaces of the insulator 4, respectively. Further, a cylindrical rotating part 7 is provided outside the outer shell 2, and three pins 8 are attached inside the rotating part 7.

An outer shell guide key 13 is provided on a ready-made cylindrical outer shell 12 of the receptacle 11. An insulator 14 is inserted into the outer shell 12, and the outer side of the insulator 14 is formed in a cylindrical surface,
A triangular hole having a curved top surface is formed on the inside corresponding to the insulator 4 of the plug 1. Insulator 1
4, three pin contacts 15 are provided,
In addition, insulator guide key grooves 16 are provided near the centers of the three surfaces of the triangular holes of the insulator 14, respectively. Further, three outer wire grooves 17 are provided on the outer peripheral surface of the outer shell 12.

To fit the round cable connector, first, the plug 1 and the receptacle 11 are butted as shown in FIG. 2C, and then the rotating part 7 is rotated to rotate the three parts of the rotating part 7. The pins 8 are respectively advanced into the three wire grooves 17 of the outer shell 12. Subsequently, the outer guide key 13 of the receptacle 11 must be inserted so as to match the outer guide key groove 3 of the plug 1. However, in many cases, the relative positions of the two cannot be properly inserted because the relative positions of the two are shifted. Frequent insertions that do not match often occur. As a result, there is a problem that the contact between the three pin contacts 15 and the three socket contacts 5 is an unintended combination. According to the present invention, as described below with reference to FIGS. 2A and 2B, it is possible to prevent the occurrence of the obstacle.

FIGS. 2A and 2B are views showing a fitting state of the plug 1 and the receptacle 11 and a state before the fitting. FIG. 2A is a front view showing an incorrect fitting state, and FIG. FIG. 3C is a cross-sectional view and a side view passing through a central axis before the plug 1 and the receptacle 11 are fitted to each other, and FIG.
In this state, the insulator guide key 6 does not match the insulator guide key groove 16 of the receptacle 11.

The dimensions of the three insulator guide keys 6 of the plug 1 are different, and the three insulator guide keys 6 are provided at asymmetrical angular positions with respect to the center axis of the plug 1. Three insulator guide keys 6
Accordingly, the dimensions of the three insulator guide key grooves 16 of the receptacle 11 are different, and the three insulator guide key grooves 16 are provided at asymmetrical angular positions with respect to the center axis of the receptacle 11. Therefore, the outer shell guide keyway 3 of the plug 1 and the receptacle 11
2A, the three insulator guide keys 6 of the plug 1 and the three insulator guide key grooves 16 of the receptacle 11 do not match, that is, FIG. As shown in FIG. At the three positions V and W, when the dimensions and the angular positions of the three insulator guide keys 6 do not match the dimensions and the angular positions of the three insulator guide key grooves 16, the three pin contacts 15 of the receptacle 11 are It cannot be inserted into the three socket contacts 5 of the plug 1. Therefore, three pin contacts 1
There is no problem that the contact between the socket contacts 5 and the three socket contacts 5 is an unintended combination.

As shown in FIG. At the three positions V and W, when the dimensions and the angular positions of the three insulator guide keys 6 and the dimensions and the angular positions of the three insulator guide key grooves 16 match, the three pin contacts 15 of the receptacle 11 are removed. It can be inserted into the three socket contacts 5 of the plug 1.

[0017]

As is apparent from the above description, the present invention has the following advantages.

(1) It is possible to prevent erroneous fitting of the plug into the receptacle, in other words, it is possible to prevent unintended combinations of a plurality of socket contacts of the plug and a plurality of pin contacts of the receptacle. Therefore, unnecessary short-circuits do not occur.

(2) It is convenient because the ready-made outer shell of the plug and the ready-made outer shell of the receptacle can be used as they are.

(3) When a ready-made outer shell of the plug and a ready-made outer shell of the receptacle are used, when the outer guide key groove of the plug and the outer guide key of the receptacle do not match, a plurality of plugs of the plug are used. Since the insulator guide keys and the plurality of insulator guide key grooves of the receptacle do not match, the plug can be prevented from being erroneously fitted into the receptacle.

[Brief description of the drawings]

FIG. 1 shows various views of a plug and a receptacle constituting a multi-core circular cable connector according to an embodiment of the present invention;
(A) is a perspective view of the plug, (b) is a front view of the plug,
(C) is a sectional view and side view passing through the center axis of the plug, (d)
3 is a perspective view of the receptacle, FIG. 3E is a front view of the receptacle, and FIG. 4F is a cross-sectional view and a side view passing through the center axis of the receptacle.

FIG. 2 is a view showing a fitting state and a state before fitting of a plug and a receptacle constituting the multi-core circular cable connector according to an embodiment of the present invention, wherein (a) shows an incorrect fitting state; (B) is a front view showing a proper fitting state,
(C) is a sectional view and a side view passing through the center axis before the plug and the receptacle are fitted, and shows a state where the insulator guide key of the plug does not match the insulator guide key groove of the receptacle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug 2 Outer shell 3 Outer shell guide keyway 4 Insulator 5 Socket contact 6 Insulator guide key 7 Rotating part 8 Pin 11 Receptacle 12 Outer shell 13 Outer shell guide key 14 Insulator 15 Pin contact 16 Insulator guide keyway 17 Line groove

Claims (3)

[Claims] An insulator housed inside a plug is provided with a plurality of insulator guide keys having different dimensions, and a plurality of insulator guide keys having different dimensions are arranged corresponding to the insulator guide keys inside the receptacle. A contact contact prevention structure due to erroneous fitting of a multi-core connector, characterized by being provided with a groove. 2. An insulator housed inside a plug, wherein a plurality of insulator guide keys are provided at asymmetrical angular positions with respect to a center axis of the plug, and the insulator housed inside a receptacle corresponding to the insulator guide keys. A structure for preventing contact contact due to erroneous fitting of a multi-core connector, wherein a plurality of insulator guide key grooves are provided at asymmetrical angular positions with respect to a center axis of the receptacle. 3. The plurality of insulator guide keys have different dimensions, and the plurality of insulator guide key grooves have different dimensions. 3. Contact prevention due to erroneous fitting of a multi-core connector according to claim 2. Construction.