JP2762897B2 - Lever connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever-type connector for connecting a connector by utilizing the leverage of a lever, and more particularly, to a torsion coil spring for urging a lever to a predetermined initial position. The present invention relates to a lever-type connector improved so as to be easily assembled temporarily.

[0002]

2. Description of the Related Art This type of lever type connector has the advantage that it can be connected and disconnected with a small force.
The present invention is applied to a multi-pole connector having 20 or more poles, and its general structure and operation will be described first with reference to FIGS. 1 and 2 and FIGS.

In FIGS. 1 and 2, reference numeral 1 denotes a female connector housing on the insertion side in which a large number of female terminals are accommodated, and reference numeral 2 denotes a male connector housing on the insertion side in which a large number of male terminals are accommodated. Each of the female housings 1 has a lever 3 formed in a U-shape so as to straddle the housing 1 in a bearing hole 5 penetrating through both side plates 4.
The housing 1 is swingably supported by fitting support shafts 6 projecting from both side surfaces of the housing 1. As shown in FIGS. 6 and 7, a cam groove 7 is formed on the inner surface of both side plates 4 of the lever 3, into which follower pins 8 protruding from both side surfaces of the male housing 2 are fitted. A housing hole 10 is formed in the inner surface of the side plate 4 concentrically with the bearing hole 5,
A torsion coil spring 11 having both ends extending in substantially opposite directions along the tangential direction of the coil portion is accommodated therein, and one extending end 11a is provided in a locking groove formed in the accommodation hole 10. 1
2, and the other extension end 11b is bent against the elasticity and temporarily fixed to the locking projection 14 on the side surface of the female housing 1 shown in FIG. The lever 3 is urged to swing backward in the clockwise direction as viewed from the near side in FIG. 1, and the swing is regulated by hitting the upper surface of the housing 1, and the lever 3 is moved to the cam groove 7. Is held in a fixed posture with the entrance of the opening facing the front.

The male housing 2 is provided with a pin 8 aligned with the entrance of the cam groove 7 and a ridge 1 coupled to the rear of the pin 8.
6 is fitted along the guide groove 17 formed on the side surface of the female housing 1 to a predetermined position in the female housing 1,
Thereafter, when the lever 3 is swung forward against the elastic force of the torsion coil spring 11, the two housings 1 and 2 are pulled together and engaged with each other via the engagement between the cam groove 7 and the pin 8, and the lever By locking the locked member 18 provided on the third member 3 with the locking member 19 provided on the upper surface of the male housing 1, the locked state can be maintained. Here, it is structurally difficult to mount the torsion coil spring 11 between the lever 3 and the housing 1 from the beginning while performing the above-described urging function. Therefore, lever 3
As shown in FIGS. 6 and 7, a temporary locking groove 21 different from the locking groove 12 described above is formed in the inner surface of the side plate 4 so as to be continuous with the housing hole 10 and before the lever 3 is assembled to the housing 1. The extension end 11b of the torsion coil spring 11, which is to be locked to the locking projection 14 of the housing 1, is temporarily assembled by being bent and fitted into the temporary locking groove 21, and the lever 3 is assembled. A through hole 22 opened from the temporary locking groove 21 to the outer surface of the side plate 4
Through a needle-shaped jig or the like, and
1 and the locking projection 1 of the housing 1
The device has been devised so as to be locked to the device 4, and this technology is also known.

[0005]

In the case where the torsion coil spring 11 is temporarily assembled as described above, conventionally, as shown in FIG. After the extension end 11 a is fitted into the locking groove 12, a pin-shaped jig x is applied to the side of the other extension end 11 b extending on the inner surface of the side plate 4 and is extended with the jig x. 8 is pushed into one of the temporary locking grooves 21 so as to be fitted. However, as shown in FIG. 8, the extension end 11b is pushed by being hooked only to the tip of the jig x. When the restoring elasticity becomes strong near the point 21, the extension end 11 b slips and easily comes off the jig x, which is an unexpectedly difficult operation.

[0006]

SUMMARY OF THE INVENTION A lever type connector according to the present invention has been completed in view of the above points, and has a jig groove communicating with a temporary locking groove on an inner surface of a side plate of a lever. The configuration was formed.

[0007]

[Function] A pin-shaped jig is inserted into a jig groove beside the extended end of the torsion coil spring that has not yet been fitted into the temporary locking groove, and the jig is moved along the jig groove. When it is moved, the extension end is pushed halfway along the length of the jig, swings to the position of the temporary locking groove against the elasticity, and finally the jig is tilted. It is fitted into the temporary locking groove.

[0008]

EFFECT OF THE INVENTION That is, according to the present invention, by forming the jig groove for insertion of the jig, the in the state of piercing against the moving surface of the extended end of the torsion coil spring jigs The extension end can be rocked while pushing the extension end in the middle of the length direction, and the extension end can be easily and securely fitted into the temporary locking groove without removing the extension end from the jig during the swinging process. There is.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The overall structure and operation described with reference to FIGS. 1 and 2 are the same as those described in the section of the prior art, and only the improved portion of the temporary assembling structure of the torsion coil spring according to the present invention will be described below. In this embodiment, the temporary locking groove 21 of the lever 3 is provided on the inner surface of the side plate 4 of the lever 3 described above.
The cam groove 7 having a substantially circular arc shape extends from the end face on the side opposite to the side where the groove is formed to the temporary locking groove 21 across the cam groove 7.
A jig groove 25 having the same depth as that of the jig 25 is formed. The present embodiment has such a structure. When the torsion coil spring 11 is temporarily assembled, first, the coil portion of the torsion coil spring 11 in a free state is fitted with the one extended end 11 a of the coil portion in the locking groove 12. 4A, the other extension end 11b is placed on the inner surface of the side plate 4 so as to cross the jig groove 25, as shown in FIG.

From this state, the pin-shaped jig x is inserted into the jig groove 25 on the rear side in the moving direction of the extending end 11b. Thereafter, the jig x crosses the cam 7 groove along the jig groove 25 as shown in FIG. 7B, and is further coupled to the temporary locking groove 21 as shown in FIG. When the extension end 11b is moved to the portion, the extension end 11b is swung against the elasticity while being pushed by the jig x, moves to just above the temporary locking groove 21, and finally the jig x is moved to the temporary locking groove. When tilted to the side 21, the extension end 11 b
Is fitted into the temporary locking groove 12. During the movement of the extension end 11b, as shown in FIG. 5, the jig x is inserted into the jig groove 25 and pierces the moving surface of the extension end 11b. Since the extension end 11b is pushed in the middle of the direction, the extension end 11b does not come off the jig x in the swinging process.

Note that the torsion coil spring 1
When the extension end 11b of 1 is pushed, it is easy to come off.
Particularly, since the jig groove 25 is formed only between the cam groove 7 and the temporary locking groove 21 because the restoration elasticity is near the temporary locking groove 21, the extension end 11 b swings. Initially jig x
Along the inner surface of the side plate 4, that is, the extension end 11 b is pushed by the tip of the jig x, the jig x is sunk from the cam groove 7, and the jig groove 25 continuously connected to the temporary locking groove 21. The extension end 11b may be pushed by moving the inside of the inside, whereby the effect of preventing the extension end 11b from coming off can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of the appearance of both connectors according to an embodiment of the present invention.

FIG. 2 is a partial perspective view of the female connector with a lever removed.

FIG. 3 is a perspective view of a single side plate of the lever of the embodiment.

FIG. 4 is an operation explanatory diagram of the present embodiment.

FIG. 5 is a cross-sectional view showing an engaged state between the extension end of the torsion coil spring and the jig in the embodiment.

FIG. 6 is a perspective view of a side plate of a conventional lever alone.

FIG. 7 is an operation explanatory view of a conventional example.

FIG. 8 is a cross-sectional view showing an engagement state between an extension end of a torsion coil spring and a jig in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Female connector housing 2 ... Male connector housing 3 ... Lever 4 ... Side plate 5 ... Bearing hole 6 ... Support shaft 7 ... Cam groove 8 ... Follower pin 10 ... Housing hole 11 ... Torsion coil spring 11a, 11b ... Extension end 12 ... locking groove 14 ... locking projection 21 ... temporary locking groove 25 ... jig groove x ... jig

Claims (1)

(57) [Claims] 1. A lever having a U-shape on one of a pair of connector housings and a cam groove formed on a side plate of the connector housing to engage with a follower provided on the other connector housing. The one end of the torsion coil spring which is rotatably supported and accommodated in an accommodation hole formed concentrically with the bearing hole of the support shaft on the inner surface side of the side plate of the lever has one extension end extended to the side plate and the other extended end. By locking the ends to the one housing, the lever is pivotally urged to a position in which the follower can be introduced into the cam groove thereof, and after the two housings are temporarily fitted, the lever is moved by the torsion coil spring. The two housings are attracted to each other through the engagement between the cam groove and the follower by being swung against the elasticity of the lever, and the inner surface of the side plate of the lever is provided with the torsion. In a lever type connector provided with a temporary locking groove for temporarily locking the other extension end of the coil spring before locking the other extension end to the one housing, an inner surface of a side plate of the lever, A lever-type connector having a communication groove for a jig.