JPH10116650A - Drive lever mounting structure for connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical drive lever mounting structure for a connector which improves assembly workability of a drive layer and can reduce the number of part items. SOLUTION: In a connector 7 having a base housing 21 arranging a contact 21a, cover housing 22 having a terminal insertion hole 22a to be assembled movably in an upper surface of the base housing 21 and a driver lever 3 turnably inserted in a lever insertion hole 2 provided between the base housing 21 and the cover housing 22, in a peripheral surface of the drive lever 3, an annular engaging groove 92 in provided, in an internal wall of the lever insertion hole 2, an engaging protrusion 81e capable of elastic displacement in a direction orthogonal to a shaft of the drive lever 3 is provided, by inserting the drive lever 3 in the lever insertion hole, the engaging protrusion 81e is elastically insertion engaged with the engaging groove 92.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for moving a cover housing between a base housing in which contacts are arranged and a cover housing having terminal insertion holes and movably mounted on an upper surface of the base housing. The present invention relates to a drive lever mounting structure for a connector in which a drive lever is rotatably mounted.

[0002]

2. Description of the Related Art Conventionally, as a connector to which a drive lever of this type is mounted, a ZIF connector as shown in FIG. The connector 1 includes a base housing 21 and a base housing 2
1, a cover housing 22 movably mounted on the upper surface of the base 1, a base housing 21 and a cover housing 22.
, And an E-ring 4 for attaching the drive lever 3 to the connector 1.
Next, FIG. 5 is a perspective view of the base housing 21 and the cover housing 22. Base housing 2
Reference numeral 1 denotes a drive lever insertion hole for arranging a contact 21a on the upper surface, integrally forming a lever mounting portion 21b on one end side, and inserting a driving lever 3 penetrating in the left and right direction in the lever mounting portion 21b. 21c is provided. The cover housing 22 has a plurality of terminal insertion holes 22a into which terminals such as ICs are inserted, and has a lever mounting portion 22b at one end. The lever mounting portion 22b is provided with a drive lever insertion hole 22e for inserting the drive lever 3 penetrating in the left-right direction. Openings 22c, 22c are formed on both sides of the lever mounting portion 22b so as to communicate with the drive lever insertion hole 22e and open upward, and an insertion groove 22d for the E-ring 4 is provided on the inner wall surface of the opening 22c. .
Further, a recess (not shown) for movably housing the lever mounting portion 21b of the base housing 21 is formed on the lower surface of the lever mounting portion 22b. Base housing 21
When the cover housing 22 is assembled above and the lever mounting portion 21b is fitted into this recess, the base housing 2
Drive lever insertion hole 21c on one side and cover housing 22
The lever insertion hole 22e on the side coincides with each other, and one lever insertion hole 2 penetrating in a direction orthogonal to the moving direction of the cover housing 22 is formed. The drive lever insertion holes 21c and 22e have an elliptical cross section that is long in the vertical direction. The drive lever 3 is formed by bending a metal round bar into an L shape, and is bent at a right angle from one end of the drive unit 31 inserted into the lever insertion hole 2 and extends to extend. An operation unit 32 is provided. Drive unit 31
Is a drive shaft 31 that is inserted into a drive lever insertion hole 22 e of the cover housing 22 and drives the cover housing 22.
a and 31b are provided on the distal end side and the operation portion 32 side, respectively, and between the drive shafts 31a and 31b, a shaft portion 31c which is inserted into the drive lever insertion hole 21c of the base housing 21 side and serves as a rotation shaft of the drive lever. Are formed so as to be shifted from the drive shafts 31a and 31b. The drive shaft 31a has E
A stop groove 31d for attaching the ring 4 is provided. The E-ring 4 is formed in a ring shape from a metal material, and its lower end is opened so as to be able to engage with the retaining groove 31d. Next, when the drive lever 3 is inserted into the lever insertion hole 2 to be attached to the base housing 21 and the cover housing 22, the drive unit 31 side of the drive lever 3 adjusts the eccentric direction of the shaft portion 31c to the drive lever insertion hole 22e. The cover housing 22 is inserted into the lever insertion hole 2 from one side of the drive lever insertion hole 22e side in a state of being aligned in the major diameter direction, that is, in the upward direction. Next, the base housing 21
When the stop groove 31d of the drive unit 31 reaches the insertion groove 22d in the drive lever insertion hole 22e on the other side, the E-ring 4 is inserted into the groove 22d and the stop groove 31d is inserted into the stop groove 31d. By the engagement, the drive lever 3 has the drive shafts 31a and 31b in the drive lever insertion holes 22e on both sides of the cover housing 22, and the shaft portion 31c in the drive lever insertion hole 2 on the base housing 21 side.
1c, the lever insertion hole 2 as shown in FIG.
Is rotatably inserted into the stopper. When the connector 1 assembled as described above is mounted on the cover housing 22 by inserting a terminal such as an IC into the terminal insertion hole 22a and then turning the operation portion 32 of the drive lever 3 toward the cover housing 22, the cover 1 The housing 22 is moved relative to the base housing 21 by the eccentricity of the drive shafts 31a and 31b together with the terminals such as ICs.
Contact 1a. The arrow in FIG. 6 indicates the moving direction of the cover housing.

FIG. 7 shows another conventional example, in which a step portion 41 is formed at the tip of a driving portion 31 of a driving lever 3. To attach the drive lever 3 to the connector 6, the drive lever 3 is inserted into the lever insertion hole 2 from one side of the cover housing 22, and the step 41 of the drive lever 3 is projected from the other side. The drive lever 3 is attached to the connector 6 by externally fitting the annular stop ring 5 while bending the elastic tongue piece 51a.

[0004]

However, in the above-described conventional drive lever mounting structure, since the drive lever 3 is mounted on the base housing 21 and the cover housing 22, another component such as the E ring 4 or the stop ring 5 is required. As the number of parts increases, an assembly jig for engaging the E-ring 4 and the stop ring 5 with the drive lever 3 must be prepared, which is not economical. Moreover, it takes a long time to assemble the ring, and small parts such as the E-ring 4 and the stop ring 5 are easily dissipated during the operation, so that the workability is extremely poor. The present invention has been made to solve the above-described disadvantages,
An economical drive lever mounting structure for a connector can be obtained in which the operation of assembling the drive lever can be easily performed without the need for an assembly jig and the number of components can be reduced.

[0005]

SUMMARY OF THE INVENTION The present invention provides a base housing in which contacts are arranged, a cover housing having terminal insertion holes and movably mounted on an upper surface of the base housing, and a base housing and a cover housing. A drive lever rotatably inserted into a lever insertion hole provided between the cover housing and the cover housing is moved by the rotation of the drive lever so that the mating terminal inserted into the terminal insertion hole can be moved. In a connector to be brought into contact with a contact, an annular engagement groove is provided on an outer peripheral surface of the drive lever, and an engagement protrusion capable of being elastically displaced in a direction orthogonal to an axis of the drive lever is provided on an inner wall of the lever insertion hole, By inserting the drive lever into the lever insertion hole, the engagement protrusion is elastically engaged with the engagement groove and inserted. In the drive lever mounting structure of the connector of the present invention configured as described above, simply inserting the drive lever into the lever insertion hole provided between the base housing and the cover housing allows the drive lever to be inserted into the lever insertion hole. An engagement groove provided on the drive lever is engaged with the formed engagement protrusion, and the drive lever is rotatably attached to the base housing and the cover housing. For this reason, a drive lever mounting structure for a connector is provided which does not require an E-ring or a stop ring as in the conventional example, and facilitates the mounting operation of the drive lever to the base housing and the cover housing.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS. FIG. 1A is an exploded perspective view of a connector using the drive lever mounting structure of the present invention, and FIG. 1B is an enlarged perspective view of a main part of FIG. The difference between the connector shown in FIGS. 1 to 3 and the conventional connector shown in FIGS. 4 to 7 lies in the mounting structure of the drive lever in the lever insertion hole, and the other structures are different. Absent. Therefore, in the drawing, the same reference numerals are used for the same shape and the same purpose as in the conventional example, and the detailed description is omitted. That is, FIGS.
In the conventional connector shown in FIG. 1, the grooves 22d and 31d are provided in the opening 22c of the cover housing 22 and the drive lever 3 for mounting the drive lever 3 in the lever insertion hole 2, and the E-rings are provided in these grooves 22d and 31d. 4, the leading end of the drive lever 3 projects outside the lever insertion hole 2, and the stop ring 5 is inserted and locked there. In the connector 7 of the present invention, instead of these mounting structures, an elastic engaging projection 81e is provided on the inner wall of the lever insertion hole 2, and an engaging groove 92 for engaging with the engaging projection 81e is provided on the drive lever 3. , Can be mounted simply by inserting the drive lever 3 into the lever insertion hole 2. Hereinafter, an embodiment of the drive lever mounting structure will be described in detail. As shown in FIG. 1A, of the openings 22 c, 22 c formed on both sides of the lever mounting portion 22 b of the cover housing 22, both inner wall surfaces of the opening 22 c where the tip end side of the drive lever 3 is located (drive A pair of engagement arms 81a, 81a (only one is shown) facing each other are provided on the inner wall surface of the lever insertion hole 22e. That is,
As shown in FIG. 1B, a pair of cutout grooves 81c, 81c extending along the insertion direction of the drive lever 3 are formed on the inner wall of the opening 22c (the inner wall of the drive lever insertion hole 22e) at the depth of the opening 22c. By being spaced apart in the vertical direction,
An engaging arm 81a is formed on a wall surface between the notch grooves 81c, 81c. Thereby, the engaging arm 81a is cut off from the wall surface of the opening 22c except for both ends in the lever insertion direction, and as shown in FIG. 3, is formed in a recess 81d formed on the back side of the engaging arm 81a. It is formed so as to be elastically displaceable as shown by a two-dot chain line in the figure. In addition, approximately in the center of the engagement arm 81a,
An engagement protrusion 81e is provided to project toward the opening 22c. The surface of the engagement projection 81e facing the lever insertion side has a slope 8.
1f is formed, and the surface 81g on the side facing the inclined surface 81f is a surface orthogonal to the lever insertion direction. The engagement projections 81e, which project into the opening 22c and face each other,
The distance between the top surfaces of 81e is set smaller than the outer diameter of the drive lever 3 inserted into the drive lever insertion hole 22e (lever insertion hole 2). On the other hand, the drive lever 3 includes a drive unit 31 rotatably inserted into the lever insertion hole 2 and an operation unit 32 bent at a right angle from one end of the drive unit 31 as in the conventional example. The difference between the present invention and the conventional example is that the drive shaft 31a on the distal end side of the drive unit 31 is provided with an engagement groove 92 for engaging with the engagement protrusion 81e of the engagement arm 81a in the circumferential direction. This is because a slope 93 that abuts on the engaging projection 81e is formed at the tip. Next, as shown in FIG. 2, to attach the drive lever 3 to the base housing 21 and the cover housing 22,
In the state where the eccentric direction of the drive shafts 31a and 31b coincides with the major axis direction of the drive lever insertion hole 22e, that is, the vertical direction, the lever insertion hole from the drive lever insertion hole 22e where the engaging arm 81a is not formed. 2 is inserted. As a result, the drive lever 3 causes the inclined surface 93 of the drive shaft 31a to abut against the inclined surface 81f of the engagement protrusion 81e, and elastically flexes the engagement arm 81a toward the recess 81d as shown by the two-dot chain line in FIG. It is inserted between the engaging arms 81a, 81a while being moved. Thereafter, when the engaging groove 92 of the driving portion 31 reaches the position of the engaging protrusion 81e of the engaging arm 81a, the engaging arm 81a returns to the original shape by elastic restoration. The drive lever 3 is rotatably supported without slipping out of the lever insertion hole 2. The arrow shown in FIG. 2 indicates the direction in which the cover housing 22 moves.

[0007]

As is apparent from the above description, according to the present invention, an elastically displaceable engaging projection for engaging with the drive lever is provided on the inner wall of the lever insertion hole provided between the base housing and the cover housing. When the drive lever is attached to the lever insertion hole, the drive lever is simply inserted into the lever insertion hole, and is engaged with the above-mentioned engaging projection to be rotatably attached. For this reason, since it is not necessary to incorporate an E-ring or a stop ring as in the conventional example, the assembly is simplified, the workability is improved, and the number of parts is reduced, and the drive lever mounting structure of the connector which is economical is provided. be able to.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is a perspective view of a state before a drive lever is attached, and FIG. 1B is an enlarged perspective view of a main part of FIG.

FIG. 2 is a perspective view showing the appearance of an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a main part of FIG. 2;

FIG. 4 is a perspective view showing a conventional example, in a state before a drive lever is attached.

FIG. 5 is an exploded perspective view of the base housing and the cover housing shown in FIG. 4;

FIG. 6 is a perspective view showing the appearance of a conventional example.

FIG. 7 is a perspective view showing another conventional example, in a state before a drive lever is attached.

[Explanation of symbols]

 2 Lever insertion hole 21 Base housing 22 Cover housing 3 Drive lever 7 Connector 81e Engagement protrusion 92 Engagement groove

Claims (1)

[Claims] 1. A base housing in which contacts are arranged, a cover housing having terminal insertion holes and movably mounted on an upper surface of the base housing, and a lever provided between the base housing and the cover housing. A connector having a drive lever rotatably inserted in the insertion hole, and moving the cover housing by the rotation of the drive lever to bring the mating terminal inserted into the terminal insertion hole into contact with the contact. An annular engagement groove is provided on the outer peripheral surface of the drive lever, and an engagement protrusion capable of being elastically displaced in a direction perpendicular to the axis of the drive lever is provided on an inner wall of the lever insertion hole. The drive lever mounting structure for a connector, wherein the engagement protrusion is elastically engaged with the engagement groove to be inserted by being inserted into the hole. Build.