JP2003317856A - Lever type connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the structure of a molding die of a lever. <P>SOLUTION: The lever 30 is formed into U shape extending a pair of cam plate parts 32 from both ends of an operation part 31. The cam plate part 32 is composed of a pair of guiding plates 32A, 32B shifted from each other in the direction of thickness. A cam groove 34 of the cam plate part 32 is formed so as to have an insertion guiding edge part 34A and a detachment guiding edge part 34B separately. The insertion guiding edge part 34A of which, back side is set free, is formed at the back side edge part of the front side guiding plate 32A, and the detachment guiding edge part 34B of which, front side is set free, is formed at the front side edge part of the back side guiding plate 32B. By the above, The lever 30 can be molded only by one molding die (not shown in the figure) opened and closed in front and back direction (X-X direction). Consequently, a slide type mold for molding the cam groove is disused, the structure of the molding die is simplified, and the cost is reduced. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever-type connector. 2. Description of the Related Art A lever-type connector utilizes a cam function between a lever mounted on one housing and a mating housing to fit both housings together. Generally has a U-shape in which a pair of cam plate portions 3 extend in parallel from both ends of the operation portion 2 as shown in FIG. Each of the pair of cam plate portions 3 is formed with a cam groove 4 which can be engaged with a cam pin (not shown) of a mating housing, and is recessed or penetrated in the thickness direction. The lever 1 is of a slide type which is operated along the direction in which the cam plate portion 3 extends, but is also a rotary type which is rotated around a support shaft provided in the housing. There is also a lever, and such a rotary lever is also generally U-shaped like a slide type, and a pair of cam plates is formed with a cam groove recessed or penetrated in the thickness direction. It is in the form that was done. As an example of the lever-type connector, there is one described in JP-A-2000-315549. [0003] Considering a mold structure for forming a U-shaped lever as described above, the main part of the mold is a plate surface of the cam plate portion 3. Open and close in one direction (the XX direction in FIG. 10) along the arrow. Also,
In order to form the cam groove 4 in the cam plate 3, a slide die that opens and closes in the thickness direction (Y-Y direction) of the cam plate 3 is provided in addition to the above-described mold structure. Therefore, such a lever has a problem that the mold structure is complicated and the manufacturing cost is increased. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lever-type connector capable of simplifying a structure of a lever forming die. In order to solve the above-mentioned problems, a lever-type connector according to the present invention has a pair of cam plate portions extending from both ends of an operation portion in parallel with each other. The U-shaped lever is attached to the housing, and the cam groove of the cam pin and the cam pin are formed by operating the lever by engaging the cam pin of the mating housing with the cam groove formed in the cam plate portion. The two housings are drawn toward each other by the cam action to form a regular fit, and the cam plate portion is provided with a pair of guide plates that are provided so as to be shifted in the thickness direction. A part of the groove edge of the cam groove is formed at an edge of one of the pair of guide plates, and another portion of the groove edge is formed at an edge of the other guide plate. Formed on the edge of the groove on both sides The cam plate is characterized in that the lever can be formed by a pair of molds that open and close along the mold opening direction by opening a predetermined mold opening direction along the plate surface of the cam plate portion. . According to the first aspect of the present invention, the cam plate portion of the lever is provided with a pair of guide plates which are provided so as to be shifted in the thickness direction, and the groove edge of the cam groove is provided. The portion is formed separately on both guide plates, and the groove edges on both sides are open in a predetermined mold opening direction along the plate surface of the cam plate portion. Thus, the lever can be formed by only a pair of molds that open and close along the above-described die-cutting direction. Therefore, a slide mold for forming the cam groove is not required, so that the mold structure can be simplified and the cost can be reduced. Next, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the lever-type connector C of this embodiment has a male housing 10.
A female housing 20 (corresponding to the “housing” of the present invention) capable of fitting with the female housing 20 and a lever 30 attached to the female housing 20 are provided. The male housing 10 is made of synthetic resin,
As shown in FIG. 2, the main body 1 has a horizontally long block shape.
1 has a small hood portion 12 protruding from the front surface. A plurality of large male terminals 13 </ b> L and small male terminals 13 </ b> S are projected from the inner surface of the small hood portion 12 of the male housing 10. Further, on both upper and lower surfaces of the small hood portion 12, columnar cam pins 14 are erected at the center in the width direction at positions close to the front edge. The female housing 20 is also made of a synthetic resin. As shown in FIGS. 3 and 4, the female housing 20 can be fitted into the small hood 12 of the male housing 10 described above.
1 has a large hood portion 22 that can be fitted to the outside of the small hood portion 12. Large hood section 22
A cover portion 23 is formed on the upper surface and the lower surface of the cover 30 at predetermined intervals, and a cam plate portion 32 of a lever 30 described below is provided between the both cover portions 23 and upper and lower surfaces of the large hood portion 22. Is formed through the insertion passage 24. The insertion passage 24 is open on both left and right sides, while both front and rear sides are closed. The front plate 25 that covers the front surfaces of the upper and lower insertion passages 24 in the female housing 20 has a through hole 26 at the center in the width direction thereof to allow the cam pins 14 to enter. Inside the tower portion 21, a large cavity 28L accommodating a large female terminal (not shown) corresponding to the large male terminal 13L, and a small cavity 28L accommodating a small female terminal (not shown) corresponding to the small male terminal 13S. The cavity 28S is formed in alignment. The lever 30 is made of a synthetic resin. As shown in FIGS. 1, 5 to 7, a pair of cam plate portions 32 extend in parallel from both ends of an elongated flat operating portion 31. It is formed in a U-shape. Each cam plate portion 32
It has a flat shape as a whole, and is composed of a front guide plate 32A and a rear guide plate 32B which are provided side by side. The front guide plate 32A is provided inside the vertical guide direction (thickness direction) with respect to the rear guide plate 32B and is shifted by one plate thickness. In the cam plate portion 32, a cam groove 34 that can be engaged with the cam pin 14 of the male housing 10 is formed penetrating in the thickness direction. The cam groove 34 extends from the inlet 35 opening forward near the tip of the cam plate 32.
Is formed to be gradually inclined toward an end point 36 provided near the center in the length direction. Of the groove edges formed from the entrance 35 to the end point 36 of the cam groove 34, the insertion guide edge 34A formed from the end point 36 to the front side.
Is formed at the rear edge of the front guide plate 32A, and is open at the rear. Further, the separation guide edge 34B formed on the rear side from the end point 36 is connected to the rear guide plate 32B.
Is formed at the front edge of the front side, and the front is open. The lever 30 is mounted by being inserted from either the left or right side while inserting both cam plate portions 32 into the upper and lower insertion passages 24 of the female housing 20. The front guide plate 32A and the rear guide plate 32B are positioned in the front-rear direction and the vertical direction (thickness direction) in the insertion passage 24, respectively. In order to engage the male and female housings 10, 20, first, the cam plate 32 of the lever 30 is connected to the female housing 2.
The cam groove 34 is inserted into the insertion passage 24 at a position where the entrance 35 of the cam groove 34 and the through hole 26 are aligned with each other. When the male housing 10 is fitted into the large hood portion 22 of the female housing 20, the cam pins 14 on the male housing 10 pass through the through-holes 26 and the cam grooves 34.
Into the inlet 35, and is engaged with the cam groove 34 (see FIG. 8). Subsequently, the operating unit 31 is pressed to release the lever 30.
Is pushed toward the fitting completed position where the entire cam plate portion 32 is accommodated in the insertion passage 24. Then, the insertion guide edge 34A of the cam groove 34 mainly guides the cam pin 14 to the back while slidingly contacting the cam pin 14, so that the male housing 10
Is gradually pushed into the female housing 20 side. Lever 3
When 0 is pushed to the mating completion position, as shown in FIG. 9, the cam pin 14 also moves to the end point 36 of the cam groove 34, so that the male and female housings 10, 20 are in a properly fitted state. . In order to release the engagement between the housings 10 and 20, the operating portion 31 of the lever 30 is grasped from the state shown in FIG. 9 and the lever 30 is pulled. Then, the separation guide edge 34B of the cam groove 34 mainly slides on the cam pin 14 while
To the opening side, the male housing 10 is gradually pushed out in a direction away from the female housing 20. When the lever 30 is pulled back to the fitting start position, the cam pin 14 is returned to the entrance 35 of the cam groove 34,
Subsequently, if the male housing 10 is pulled, the cam pins 14
The male housing 10 is pulled out through the through hole 26 toward the front.
Can be removed from the female housing 20. As described above, in the present embodiment, the cam plate portion 32 of the lever 30 is provided with a pair of guide plates 32A and 32B which are provided shifted in the thickness direction.
A cam groove 34 is formed separately at the rear edge of the front guide plate 32A and the front edge of the rear guide plate 32B.
The rear of the insertion guide edge 34A and the front of the separation guide edge 34B are open. For this reason, lever 3
0 can be formed only by a pair of molds (not shown) that are opened and closed in the front-rear direction (XX axis direction in FIG. 5). This eliminates the need for a slide die for forming the cam groove, so that the die structure can be simplified and the cost can be reduced. In addition, a molding space for a large number of levers can be provided in a limited space, so that manufacturing efficiency can be improved. <Other Embodiments> The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the above embodiment, the slide type lever is shown, but the present invention can also be applied to a U-shaped rotary lever. (2) In the above embodiment, the mold opening direction is the front-back direction along the plate surface of the operation unit. However, according to the present invention, the mold opening direction is any direction along the plate surface of the cam plate unit. Other directions may be used, for example. Note that the operation unit may be formed in a bar shape or the like instead of a flat plate shape. (3) In the above embodiment, the cam groove portion is formed to penetrate in the thickness direction of the cam plate portion. However, according to the present invention, the cam groove portion does not penetrate but is recessed in the thickness direction of the cam plate portion. Any shape is acceptable. (4) In the above embodiment, the two guide plates are separately protruded from the operation unit in the cam plate portion. However, according to the present invention, for example, both the guide plates may be integrated at the base end side. good.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded plan view of a lever-type connector and a male housing according to an embodiment of the present invention. FIG. 2 is a front view of a male housing. FIG. 3 is a front view of a female housing. FIG. 5 is a perspective view of the lever. FIG. 6 is a front view thereof. FIG. 7 is a side view thereof. FIG. 8 is a plan view showing an initial fitting state of the male and female housings. FIG. 10 is a plan view showing a state. FIG. 10 is a perspective view showing a conventional lever. [Description of References] C. Lever-type connector 10. Male housing (mating housing) 14. Cam pin 20. Female housing (housing) 30. Operating part 32: cam plate 32A: front guide plate 32B: rear guide plate 34: cam groove 34A: insertion guide edge (groove edge of cam groove) 34B: detachment guide edge (groove edge of cam groove)

Claims (1)

Claims: 1. A substantially U-shaped lever having a pair of cam plates extending parallel to each other from both ends of an operation unit is mounted on a housing, and is formed on the cam plate. The two housings are attracted to each other by the cam action of the cam grooves and the cam pins by engaging the cam pins of the mating housing with the cam grooves of the mating housing and operating the lever so that the two housings are properly fitted. The cam plate portion is configured to include a pair of guide plates provided to be shifted in a thickness direction, and a part of a groove edge of the cam groove is formed of the pair of guide plates. It is formed on the edge of one guide plate, and the other part of the groove edge is formed on the edge of the other guide plate, and the groove edges on both sides are formed on the plate surface of the cam plate. By having a predetermined mold opening direction open along the form, Lever-type connector being characterized in that a shapeable bar by a pair of molds to open and close along an opening direction the mold.