JPH09245871A - Connector with terminal locking fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely insert a terminal locking fixture into a connector housing, and surely perform double coming off prevention to a terminal fixture. SOLUTION: A connector with terminal locking fixture comprises a connector housing E having a plurality of terminal housings 21 in each of which a terminal fixture G is housed, and a terminal locking fixture F which is formed so as to be capable of inserting and removing in two steps of temporary engagement state and a proper engagement state to and from the rear part of the connector housing E, and an elastic locking piece 26 is formed in the connector housing E. An engaging part 31a which engages with the elastic locking piece 26 in the temporary engagement state and keeps the engagement is formed in the terminal locking fixture F, and when the temporary engagement state moves to the proper engagement state, the elastic locking piece 26 is displaced, the engagement of the engagement part 31a is released so as to be capable of inserting the terminal locking fixture F.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector used for connecting a wire harness or the like, which enables insertion of a terminal fitting into a terminal accommodating chamber of a connector housing in a temporarily joined state, The present invention relates to a connector with a terminal locking device that has a terminal locking device that is coupled to the connector housing in order to prevent backward slipping.

[0002]

2. Description of the Related Art Heretofore, as this kind, one disclosed in Japanese Patent Publication No. 7-58629 has been known.

That is, to explain this with reference to FIG. 4, a connector housing A having a plurality of terminal accommodating chambers 1, a terminal fitting C inserted into the terminal accommodating chamber 1, and a rear portion of the connector housing A are provided. On the other hand, a terminal locking device B provided so as to be insertable / detachable in two stages of a temporary connection state and a main connection state
It is a connector consisting of.

Then, as shown in FIG.
Is temporarily coupled to the connector housing A by engaging the temporary coupling protrusion 12a of the flexible piece 12 with the temporary coupling portion 5 of the connector housing A, and the terminal metal fitting C is temporarily coupled with the terminal locking device B in the temporarily coupled state. Is inserted into the terminal accommodating chamber 1 so that the terminal fitting C is locked to the flexible locking arm 3 of the connector housing A.

Further, the terminal locking device B is provided with an erroneous insertion preventing flexible piece 11 provided with an abutting projection 11a facing the erroneous insertion preventing part 7 of the connector housing A in the temporarily connected state and an operating portion 11b. Have Then, the operation portion 11b is pressed down with a fingertip (not shown) to deform the erroneous insertion preventing flexible piece 11, thereby releasing the abutting between the erroneous insertion preventing portion 7 and the abutting projection 11a. .

After that, the main coupling projections (not shown) on both sides of the terminal locking tool B are moved so as to engage with the main coupling portions (not shown) on both sides of the connector housing A, and the terminal locking tool is moved. B is transferred to the main combined state.

At this time, the flexible locking piece 10 of the terminal locking tool B is positioned at the rear of the female electric contact portion of the terminal metal fitting C, and the rear pulling out of the terminal metal fitting C is performed by the flexible member of the connector housing A. This is to prevent double-stop together with the stop arm 3.

In the figure, reference numeral 2 is a stopper for preventing the terminal fitting C from coming off, and 4 is a flexible lock arm for preventing mutual coming off when it is engaged with the mating female connector housing. Reference numeral 4a is its operation unit.

Reference numeral 9 indicates a frame-shaped main body of the terminal locking device B, and reference numeral 9a indicates an insertion portion which is provided in the frame-shaped main body 9 and through which the electric wire D is inserted.

Further, FIG. 6 (f) is an explanatory view of the case where the terminal fitting C is pulled out from the connector housing A, and after the engagement between the main coupling projection and the main coupling portion is released, the terminal locking tool B is temporarily coupled. In the state returned to the state, the engaging end 10a of the flexible locking piece 10 is removed from the movement path of the terminal fitting C, and the terminal fitting C is engaged with the flexible locking arm 3 by a jig (not shown). It shows the state when pulling out while unmatching.

[0011]

However, in the above-mentioned conventional technique, the terminal fitting B itself is tilted to remove the terminal metal fitting C, so that the terminal fitting C is pulled out.
The terminal locking device B often tilts rearward or frontward with respect to the connector housing A.

In particular, when the flexible piece 11 for preventing erroneous insertion on the side of the terminal locking device B is displaced to shift from the temporarily connected state to the permanently connected state, the terminal locking device B is inclined with respect to the connector housing A. I will end up. For this reason, when the terminal locking tool B is moved to the main coupling state, the flexible locking piece 10 is displaced from a predetermined position that prevents the terminal metal fitting C from being pulled out later, and the flexible metal locking piece 10 causes the terminal metal fitting C to move. There is a problem that the terminal locking tool B is inserted and mounted in the connector housing A without achieving the double prevention of disconnection.

The present invention has been made in view of the above circumstances, and it is possible to prevent the terminal locking device B from tilting to maintain a firm temporary coupling state and to smoothly transition to the regular coupling state. Thus, it is an object of the present invention to realize insertion and mounting of the terminal locking tool B capable of surely preventing the terminal fitting C from being doubled out.

[0014]

In order to achieve the above object, the invention according to claim 1 is a connector housing having a plurality of terminal accommodating chambers respectively accommodating terminal fittings,
The connector housing is provided with a terminal locking member that can be inserted / removed in two steps of a temporary connection state and a main connection state, and an elastic locking piece is provided on the connector housing. An engaging portion which engages with the elastic locking piece and maintains this engagement is provided in the terminal locking tool, and the elastic locking piece is displaced during the transition to the main coupling state, thereby engaging the engaging portion. Is released so that the terminal locking device can be inserted.

According to a second aspect of the present invention, the elastic locking piece has a cantilever portion, and the tip is displaced downward or upward to release the engagement with the engaging portion. Is characterized by.

The invention according to claim 3 is characterized in that, in the elastic locking piece, the tip of the cantilever portion faces the insertion direction of the terminal locking tool or the opposite direction.

The invention according to claim 4 is characterized in that, in the elastic locking piece, the tip of the cantilever portion is not oriented in the insertion / removal direction of the terminal locking tool.

Further, the invention according to claim 5 is characterized in that at least one pair of engagement between the elastic locking piece and the engaging portion of the terminal locking tool is provided.

[0019]

According to the first aspect of the present invention, since the elastic locking piece of the connector housing and the engaging portion of the terminal locking tool are engaged with each other to maintain the temporary coupling state, a firm temporary coupling is achieved. Since the state is obtained and the elastic locking piece on the connector housing side is displaced to release the engagement, the terminal locking tool is not deformed and the terminal locking tool can be inserted and mounted stably. .

Further, in the invention according to claim 2, the elastic locking piece has a cantilever portion, and the tip is displaced downward or upward to release the engagement with the engaging portion. The operability at the time of transition to the main combined state is extremely good.

According to the third aspect of the present invention, in the elastic locking piece, the tip of the cantilever portion faces the insertion direction of the terminal locking tool or the opposite direction, so that the connector housing can be easily manufactured. Can be one.

Further, in the invention according to claim 4, since the elastic locking piece is configured such that the tip of the cantilever portion is not oriented in the inserting / removing direction of the terminal locking tool, the degree of freedom in design is high. Increase.

Further, in the invention according to the fifth aspect, since at least one pair of engagements of the elastic engagement piece and the engagement portion of the terminal engagement tool is provided, the temporary connection state can be maintained more firmly. .

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

Also in this embodiment shown in FIGS. 1 to 3,
Connector housing E having a plurality of terminal accommodating chambers 21
And a terminal fitting G inserted into the terminal accommodating chamber 21,
The connector comprises a terminal locking member F that is inserted into the rear portion of the connector housing E and is assembled in two steps, a temporary connection state and a final connection state.

Then, from the state shown in FIG. 1, the terminal locking tool F is inserted into the rear portion of the connector housing E, and the temporary coupling projection 32a of the flexible piece 32 of the terminal locking tool F is inserted into the connector housing E.
It is temporarily joined to the connector housing E by engaging with the temporary joining portion 25 of. Further, the terminal fitting G is inserted into the terminal accommodating chamber 21 with the terminal fitting F being temporarily connected, and the terminal fitting G is locked to the flexible locking arm 23 of the connector housing E.

A pair of projecting pieces 31 projecting forward are provided on the upper side 33a of the frame-shaped main body 33 of the terminal locking device F.
Is provided at the rear portion of the connector housing E, and an elastic locking piece 26 is provided below the flexible lock arm 24 and protrudes in a direction opposite to the insertion direction of the terminal locking tool F. The elastic locking piece 26 has a cantilever portion 26a.

Further, in the temporarily connected state, the elastic locking piece 26 on the connector housing E side is connected to the projecting piece 3 on the terminal locking tool F side.
1 is engaged, and the cantilever portion 2 of the elastic locking piece 26 is engaged.
By pressing the tip of 6a and displacing it downward to release the engagement, the terminal locking device F can be shifted to the main coupling state.

That is, the flexible locking piece 26 of the connector housing E has a locking projection 27 protruding laterally,
In the temporarily connected state, the terminal locking member F is attached to the locking protrusion 27
The engaging recess 31a as an engaging portion provided on the tip side of the side protruding piece 31 comes into contact with and engages.

Moreover, the locking projections 27 are provided on both sides of the elastic locking pieces 26, and the locking projections 27 are provided with locking recesses 31 as engaging portions on the tip side of the pair of projections 31, respectively.
a is configured to abut and engage with each other.

Then, as described above, the tip of the cantilever portion 26a of the elastic locking piece 26 is pressed and displaced downward to deform the cantilever portion 26a, and the locking projection 27
By releasing the engagement with the engaging recess 31a as the engaging portion of the projecting piece 31, the terminal engaging device F can be shifted to the main connection state.

That is, thereafter, the main coupling portions 28 on both sides of the terminal locking tool F are moved so as to be engaged with the main coupling projections 29 on both sides of the connector housing E, and the terminal locking tool F is permanently coupled. Transition to the state. As a result, the flexible locking piece 30 of the terminal locking device F prevents the double locking of the terminal fitting G together with the flexible locking arm 23.

Reference numeral 22 is a disengagement prevention wall located near the flexible lock arm 24 with respect to the mating female connector housing.

Here, when the elastic locking piece 26 is pressed downwardly on the cantilever portion 26a, only the cantilever portion 26a is deformed so that the locking concave portion 3 as the engaging portion of the projecting piece 31 is deformed.
1a is on the upper side, and the locking projection 27 of the elastic locking piece 26 is located on the lower side and is engaged.

Therefore, since the terminal locking tool F is not deformed at all, the terminal locking tool F is tentatively connected to the connector housing E very firmly. Also,
The terminal fitting G can be smoothly inserted in the temporary connection state, and the terminal locking tool F can be surely inserted into the connector housing E, so that the transition to the main connection state can be smoothly performed.

Furthermore, since the projecting piece 31 is provided on the upper side portion 33a of the frame-shaped main body portion 33, the vertical (top-bottom) relationship of the terminal locking member F with respect to the connector housing E becomes clear, and the terminal with respect to the connector housing E is clarified. Incorrect insertion into the locking tool F can be prevented.

In this embodiment, the elastic locking piece 26
The cantilever portion 26a of No. 2 is displaced downward to release the engagement.
Of course, a configuration in which 6a is displaced upward to release the engagement is also possible.

In this embodiment, the projecting piece 31 is provided on the terminal locking device F side, and the projecting piece 31 is formed with the locking recess 31a to serve as the engaging part. A configuration in which the engaging portion is directly provided on the tool F is also possible.

Further, in the present embodiment, the tip of the cantilever portion 26a faces in the opposite direction to the insertion direction of the terminal locking device F, but it may be in the insertion direction or may not be oriented in the insertion / removal direction. .

Further, in this embodiment, the elastic locking piece 2 is used.
6 is provided with locking projections 27 on both sides, and two projecting pieces 31 are also provided, and locking recesses 31a as engaging parts are provided in each of them to make a pair of engagements. It is also possible to employ a configuration in which the number is one or two or more.

[0041]

As described above, according to the first aspect of the present invention, the elastic engagement piece of the connector housing and the engagement portion of the terminal engagement tool are engaged with each other to maintain the temporary connection state. As a result, a strong temporary bond state is obtained, and
Since the elastic locking piece on the connector housing side is displaced to release the engagement, the terminal locking tool is not deformed, and the terminal locking tool can be inserted and mounted stably.

According to the second aspect of the invention, the elastic locking piece has a cantilever portion, and the tip is displaced downward or upward so as to release the engagement with the engaging portion. Therefore, the operability at the time of transition to the main binding state becomes extremely good.

According to the third aspect of the present invention, since the tip of the cantilever portion of the elastic locking piece faces the insertion direction of the terminal locking tool or the opposite direction, the connector housing can be easily manufactured. It can be anything.

Further, in the invention according to claim 4, since the elastic locking piece is configured such that the tip of the cantilever portion is not oriented in the insertion / removal direction of the terminal locking tool, the degree of freedom in design is increased. Increase.

Further, according to the invention of claim 5, since at least one pair of engagement of the elastic locking piece and the engaging portion of the terminal locking tool is provided, it is more possible to maintain the temporary connection state. It can be done firmly.

[Brief description of drawings]

FIG. 1 is an exploded perspective view in which a part of an embodiment according to the present invention is cut away.

FIG. 2 is a cross-sectional view of a temporarily combined state according to the present invention.

FIG. 3 is a cross-sectional view of the same combined state.

4 (a), (b), (c), (d), (e),
(F) is sectional explanatory drawing which shows the connection process of the terminal locking tool with respect to the connector housing in a prior art.

[Explanation of symbols]

 E Connector housing F Terminal locking tool G Terminal metal fitting 21 Terminal accommodating chamber 24 Flexible locking arm 26 Elastic locking piece 26a Cantilever part 27 Locking protrusion 31 Projecting piece 31a Locking concave part (engaging part) 33 Frame-shaped main part

Claims (5)

[Claims] 1. A connector housing having a plurality of terminal accommodating chambers for respectively accommodating terminal fittings, and a terminal assembly provided so that it can be inserted into and removed from a rear portion of the connector housing in two stages, a temporary connection state and a final connection state. A stopper, an elastic locking piece is provided on the connector housing, and an engaging portion that engages with the elastic locking piece in the temporarily coupled state to maintain the engagement is provided on the terminal locking tool. A connector with a terminal locking device, wherein the elastic locking piece is displaced to release the engagement of the engaging portion so that the terminal locking device can be inserted at the time of transition to the main coupling state. . 2. The elastic locking piece has a cantilever portion, and the tip is displaced downward or upward to release the engagement with the engaging portion. Connector with terminal locking device. 3. The connector with terminal locking device according to claim 2, wherein in the elastic locking piece, the tip of the cantilever portion faces the insertion direction of the terminal locking device or the opposite direction. 4. The connector with terminal locking device according to claim 2, wherein the elastic locking piece has a tip of the cantilever portion not oriented in the inserting / removing direction of the terminal locking device. 5. The terminal assembly according to claim 1, wherein at least one pair of engagements of the elastic engagement piece and the engagement portion of the terminal engagement tool is provided. Connector with stopper.