JPH0240874A - Falling preventing device for cable connector - Google Patents

Abstract

PURPOSE:To prevent the relative falling of a plug and a plug receiver by rotating a latch provided in at least either of the plug or the plug receiver in the mutually approaching direction by the force of a spring, and engaging a hook with an engaging channel provided in the other. CONSTITUTION:On the front ends of the oscillating pieces 29 of latches 26, hooks 30 corresponding to the engaging channels 6 of a plug receiver 1 which are protruded slightly ahead of a case 22 and faced to each other are protruded. When a plug 21 is connected to the plug receiver 1, the oscillating pieces 29 of the latches 26 in the plug 21 are pushed open against a spring 32 by the angle parts of the rear edge both ends of a fixture 5 in the plug receiver 1, and each hook 30 is engaged with the engaging channel 6 over the both angle parts of the fixture 5. Hence, the falling of the plug 21 can be prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is designed to prevent the plug and plug receiver of a cable connector from being accidentally removed even if the cable is hit by a WI or the cable is pulled during use. This is related to the equipment that was used for this purpose.

[Conventional technology]

The simplest means to prevent the cable connector plug from coming off is to screw the side ends of the flanges provided on opposite surfaces of the plug and the plug receiver.

However, in this case, it is troublesome to attach and detach the plug, and there is a risk of losing the screw.

To solve this problem, devices as shown in FIGS. 3 and 4, for example, are known.

(1) is a plug receiver of a cable connector, (2) is a plug receiver on the main body, (3) is a flange provided on the plug receiver on the main body, and (4) is an electric conductor.

Synthetic resin fasteners (5) are screwed to both ends of the back surface of the flange (3). An engagement groove (6) facing in the vertical direction is formed on the outer surface of the locking tool (5).

(7) is the plug of the cable connector, (8) is the plug body, (9) is the pin, (10) is the flange, (11) is the cable, and the plug (7) is attached from the side of the plug body (8). A pair of left and right spring latches (12) are fixedly attached, slightly spaced apart from each other and parallel to the spring latches.

At the front ends of both spring latches (12), there are hooks (13) that protrude slightly forward from the flange (10), are bent in opposite directions, and engage with the engagement groove (6). ) are provided consecutively.

As shown in Fig. 4, if the plug (7) of the connector described above and the plug receiver (1) are fitted together, the spring latch (
12) is elastically bent, and its hook (13) engages with the engagement groove (
6) to prevent the plug (7) from coming off.

Also, hold the rear ends of both spring latches (12) with your fingers, etc.
If the hooks (13) are pressed in opposite directions, the hooks (13) will separate from the engagement grooves (6), allowing the plug (7) to be pulled out.

[Problem to be solved by the invention]

Although the dual device is effective in preventing the plug (7) from coming off, it is troublesome to manufacture and install the spring latch (12), and the connector becomes expensive.

[Means to solve the problem]

The present invention provides engagement grooves on both left and right sides of either the plug or the plug receiver in a cable connector, and also provides an inward hook on the front end portion of the other side that can engage with the engagement groove, and A pair of left and right latches that can be rotated, and a portion engages with both latches,
In addition, the above-mentioned solution is achieved by providing an operator that rotates both latches in the inward and outward directions as the latch moves back and forth.

[For production]

According to the present invention, the latches provided on either the plug or the plug holder are rotated in the direction of approaching each other by the force of the spring, and the hooks engage with the engagement grooves provided on the other, thereby causing the plug and prevents the plug holder from coming off.

When the operator is moved forward against the spring, the hooks of the latch linked to the operator rotate in a direction away from each other, and the engagement between the hook and the engagement groove is released.

〔Example〕

1 and 2 show one embodiment of the present invention, and the same members as those of the conventional connector shown in FIGS. 3 and 4 are given the same reference numerals and their explanations will be omitted. .

In the plug (21) of the connector to which the present invention is applied, a plug case (22) made of synthetic resin is provided with a rectangular bottomed fitting hole (23) in the center of the upper surface, and the side surface of the fitting hole (23) and An insertion groove (24) that widens at both ends is provided between the left and right side surfaces of the case (22). A one-arc shaped engagement hole (25) is provided in the center of the insertion groove (24).

(26) is a latch that connects the rear end of the swing piece (29) with the inward piece (
The inwardly facing piece (27) and the supporting shaft (28) formed in the center are connected to the insertion groove (24) and the engagement hole (25) of the case (22), respectively. They fit together freely.

Note that the latch (26) is preferably made of plastic resin having some flexibility.

At the front end of the swinging piece (29) of the latch (26), a third
A hook (30) corresponding to the engagement groove (6) of the plug receiver (1) similar to that shown in FIGS. (31) is a stopper provided at a suitable position on the opposing surface of the swinging piece (29).

An operator (32) is fitted into the fitting hole (23) so as to be movable back and forth.

The operator (32) has a longitudinal length shorter than the longitudinal length of the fitting hole (23), and has engagement recesses (33) (3) in appropriate positions on both sides.
A finger rest is placed on the top surface of a square base piece (34) with a piece (3).
5), and the center portion of a shallow V-shaped leaf spring (36) facing forward is fixed to the front end surface of the base piece (34).

The engagement recess (33) is connected to the inwardly directed piece (2) of the latch (26).
7), and the operator (32) engages with the inner end of the leaf spring (
36) is constantly pushed rearward by pressing against the front surface of the fitting hole (23).

However, when levering, the engagement recess (33) causes the latch (2
The inner end of the inward facing piece (27) of 6) is pushed backwards and the latch (
The hook (30) of 26) points slightly inward.

On the top of the case (22), the finger rest of the operator (32) is on one side (
A cover (38) having a receiving hole (37) into which the cover (35) can be fitted so as to be movable back and forth is fixed with screws (39).

As shown in Figure 2, the plug (21) and plug receiver (1)
), the locking tool (5) on the plug receiver (1)
), the swinging piece (29) of the latch (26) in the plug (21) is pushed open against the spring (32), and each hook (:+0) is locked. The tool (5) goes over both side corner parts and engages with the engagement groove (6).

This prevents the plug (21) from coming off.

With the plug (21) and plug receiver (1) combined,
When the finger rest is placed on the piece (35) and the operator (32) is moved forward against the leaf spring (36), the inner end of the inwardly facing piece (27) of the latch (26) rotates forward. However, since the hook (30) rotates outward and leaves the engagement groove (6), the plug (21) can be pulled out.

In addition, in the embodiment, the support shaft (
28) was fitted into the engagement hole (25) provided in the case (22) to pivotally install the latch (26), but the latch (26)
An engagement hole may be formed in the case (22), and a pin protruding from the case (22) may be fitted into the engagement hole.

Also, the center of the support shaft (28) of the latch (26) and the case (
A shaft hole may be provided at the center of each engagement hole (25) of 22), and both wheel holes may be connected by a shaft rod such as a spring shaft.

〔Effect of the invention〕

The performance of the device of the present invention is as good as that of conventional devices,
Moreover, it is easy to operate, and easy to manufacture and assemble.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a plug of a cable connector to which the present invention is applied, Fig. 2 is a plan view of the plug combined with a plug receiver, Fig. 3 is a diagram, and Fig. 4 is the same (1) Plug receiver (3) Flange (5) Locking device (7) Plug (9) Pin (11) Cable (13) Hook (22) Plug case (24) Insertion groove (26) Latch (28) Support shaft (30) Hook (32) Operator (34) Base piece (36) Leaf spring It is an exploded perspective view of a conventional cable connector and a plan view when the money is paid. (2) The plug receiver is the main body (4) Electric core wire (6) Engagement groove (8) Plug body (10) Flange (12) Spring latch (21) Plug (23) Fitting hole (25) Engagement hole (27 ) Inward piece (29) Swing piece (31) Stopper (33) Four engaging parts (35) Finger rest is on one piece (37) Receiving hole Fig. 4

Claims (4)

[Claims] (1) Engagement grooves are provided on both left and right sides of either the plug or the plug receiver in the cable connector, and the other side is provided with an inward hook that can engage with the engagement groove at the front end, and A pair of left and right latches that can be rotated, and an operator that partially engages both latches and rotates both latches in and out directions as the latches move back and forth. A device for preventing cable connectors from coming off. (2) The latch has an inward piece connected to the rear end of a swinging piece with an inward hook at the front end, and the inward piece is pivoted to either the plug or the plug receiver, and the latch has an inward hook at the front end. 2. The device for preventing disconnection of a cable connector according to claim 1, wherein the piece protrudes to the side of either the plug or the plug receiver. (3) Claim (1) or (2) wherein the latch is made of synthetic resin.
) Disconnection prevention device for the cable connector described in ). (4) The device for preventing disconnection of a cable connector according to any one of claims (1) to (3), wherein the operator is always biased backward by a spring.