JP3831262B2 - Lever type connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lever-type connector for coupling and releasing a pair of housings each accommodating a large number of connection terminals by a rotating lever.
[0002]
[Prior art]
In order to couple and release a pair of housings that accommodate a large number of connection terminals, a great deal of force is required, so a lever-type connector is often used. FIG. 3 is a side view of the lever-type connector in a fitted state. The lever-type connector includes a first housing 1 and a second housing 2 that can be fitted to each other, and the first housing 1 rotates around a shaft 3. A rotating lever 4 is provided. The rotating lever 4 is provided with a cam groove 5 for connecting and releasing the second housing 2, and is provided so as to straddle the first housing 1. A locking claw 6 is formed at the top.
[0003]
On the other hand, the second housing 2 is provided with a locking frame portion 7 for locking the locking claw portion 6. Further, driven pins 8 are provided on both side surfaces of the second housing 2, and the driven pins 8 are drawn into the cam grooves 5 of the rotating lever 4 by rotating the rotating lever 4 counterclockwise. As a result, the second housing 2 is pulled and coupled to the first housing 1 by the action of the lever as shown in FIG.
[0004]
[Problems to be solved by the invention]
However, the rotating lever 4 of the conventional first housing 1 has a second housing as shown in FIG. There is a possibility that an excessive rotation state in which the rotation position is rotated more forward than the fitting position at the time of fitting with 2 may occur. If the rotating lever 4 is rotated to this excessive angle, a spring (not shown) incorporated in the rotating lever 4 may be permanently deformed, and the function of the rotating lever 4 may be impaired. .
[0005]
An object of the present invention is to provide a lever-type connector that solves the above-described problems and prevents the rotation lever from rotating excessively forward from a predetermined rotation range.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a lever-type connector according to the present invention is a lever-type connector provided with a rotating lever for acting on a driven pin of a mating housing to connect and release the housings. A protrusion-like rotation restricting portion that restricts excessive rotation of the rotation lever forward is provided on the outer surface of the housing, and the rotation lever is fitted with the rotation restriction portion at the end of the rotation. Forming a recess, attaching a locking member to the tip of the rotating lever, and locking the locking member to a locking portion provided in the counterpart housing to lock the housings together. Features.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the embodiment shown in FIGS.
FIG. 1 is a perspective view of the first housing. The lever type connector is composed of a first housing 11 and a second housing made of synthetic resin which can be fitted to each other, but the illustration of the second housing is omitted here. The first housing 11 has a substantially U-shaped rotating lever 13 made of synthetic resin for rotating around the shaft 12 and pulling or pushing the second housing toward the first housing 11. The cam grooves 14 are formed so as to straddle the housing 11 and lead to the driven pins protruding from the both side surfaces of the second housing.
[0008]
Inside the first housing 11, a large number of terminal accommodation holes (not shown) that accommodate connection terminals are provided. Further, at both corners on the upper surface of the first housing 11, a projecting piece-shaped rotation restricting portion 15 that restricts a predetermined rotation or more in the locking direction opposite to the rotation lever 13 is provided.
[0009]
A hook-shaped locking member 16 that fits with a locking portion provided in the second housing is provided at the center of the rotating lever 13. The turning lever 13 is formed with a recess 17 that fits with the turning restricting portion 15 when the turning lever 13 is turned in the locking direction.
[0010]
In connecting the first housing 11 and the second housing, when the two housings are fitted in the initial position, the connection terminal and the connection terminal in the second housing are initially in contact with each other in the first housing 11. At the same time, the driven pin of the second housing slightly enters the cam groove 14 of the first housing 11.
[0011]
In this state, when the pivot lever 13 is pivoted counterclockwise, the front wall of the cam groove 14 of the pivot lever 13 drives the driven pin of the second housing, as in the conventional example, and by the lever action. The second housing is pulled toward the first housing 11 side. Accordingly, the first housing 11 and the second housing are coupled to the final position at the position of the rotation lever 13 shown in FIG. 2, and the connection terminal in the first housing 11 and the connection terminal in the second housing are connected. They are finally connected to each other, and the locking member 16 locks with the locking portion of the second housing.
[0012]
FIG. 2 shows a perspective view in which the rotating lever 13 is rotated in the locking direction at the same time when the first housing 11 is not coupled to the second housing. Even if the locking member 16 is rotated in a certain counterclockwise direction, when the locking member 16 is rotated to a position where the locking member 16 is fitted to the fitting portion 17 of the second housing, that is, to a substantially vertical state, the concave portion 17 becomes the rotation restricting portion 15. When fitted, the rotation lever 13 cannot be rotated further forward.
[0013]
As described above, the rotation stop position of the rotation lever 13 is substantially the same as the position of the rotation lever 13 at the final fitting position of both housings. In this state, the rotation control unit 16 and the recess 17 are moved. The fitting also contributes to prevention of the swing lever 13 from swinging.
[0015]
【The invention's effect】
As described above, in the lever-type connector according to the present invention, even when the housings are not coupled to each other, the rotating lever does not rotate more than a predetermined angle, preventing functional damage of the rotating lever. Further, it is possible to prevent an extra effort such as returning the rotating lever to the original position during the assembly work.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first housing.
FIG. 2 is a perspective view of a state in which a rotation lever of the first housing is rotated to a rotatable angle.
FIG. 3 is a side view of a conventional example of an initial fitting state between housings.
FIG. 4 is a side view of a state at the end of fitting.
FIG. 5 is a side view of a state in which a rotation lever is excessively rotated in a conventional housing.
[Explanation of symbols]
11 Housing 12 Shaft 13 Rotating lever 14 Cam groove 15 Rotation restricting portion 16 Locking member 17 Recessed portion

Claims (1)

In a lever-type connector provided with a rotating lever for connecting and releasing the housings by acting on a driven pin of the mating housing on the housing, excessive rotation of the rotating lever forward on the outer surface of the housing A protrusion-shaped rotation restricting portion for restricting the rotation, and forming a recess in the turning lever to be fitted with the turning restricting portion at the end of turning, and locking the tip of the turning lever. A lever-type connector characterized in that a member is attached, and the locking member is locked to a locked portion provided in a counterpart housing to lock the housings together .

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