JPH076816A - Lever type connector - Google Patents

Abstract

PURPOSE:To facilitate temporary assembly of a torsion coil spring to a lever. CONSTITUTION:On the inside face of a side plate 4 of a lever 3, a groove 25, which is formed into an approximately circular arc and has the fixed depth, for a jig is formed in a range from end face on one side of the lever 3 to a temporary stopping groove 21 across a cam groove 7. In the rear position in the moving direction of an extended end 11b of a torsion coil spring 11 mounted on the inside face of the side plate 4, the jig (x) is inserted into the pin-shaped jig groove 25. When the jig (x) is moved along the jig groove 25, the extended end 11b is pushed to the middle in the longitudinal direction of the jig (x) and is slid to right above the temporary stopping groove 21 against the elastic force without coming off from the jig (x). Lastly, the extended end 11b is fitted inside the temporary stopping groove 21 by inclining the jig (x).

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 connectors by utilizing the lever action of a lever, and more particularly to a torsion coil spring for biasing the lever to a predetermined initial position. The present invention relates to a lever-type connector improved so that it can 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 with reference to FIGS. 1, 2 and 6 to 8 together with the accompanying drawings according to an embodiment of the present invention.

1 and 2, reference numeral 1 is a female connector housing on the inserted side in which a large number of female terminals are housed, and reference numeral 2 is a male connector housing on the insertion side in which a large number of male terminals are housed. In each of the female-side housings 1, a lever 3 formed in a U-shape so as to straddle the housing 1 is provided in a bearing hole 5 formed through both side plates 4 thereof.
The support shafts 6 projectingly provided on both side surfaces of the housing 1 are fitted so as to be swingably supported. As shown in FIGS. 6 and 7, a cam groove 7 into which a follower pin 8 projecting from both side surfaces of the male housing 2 is fitted is formed on the inner surface of both side plates 4 of the lever 3. In addition, a housing hole 10 is formed in the inner surface of the side plate 4 concentrically with the bearing hole 5 described above.
A torsion coil spring 11 having both ends extended in substantially opposite directions along the tangential direction of the coil portion is accommodated therein, and one extension end 11a is formed into a retaining groove formed in the accommodation hole 10. 1
2 and is locked, and the other extending end 11b is bent against the elastic force and temporarily fixed to the locking projection 14 on the side surface of the female housing 1 shown in FIG. The lever 3 is biased by a rearward swinging force which is a clockwise direction when viewed from the front side in FIG. 1, and hits the upper surface of the housing 1 so that the swinging thereof is restricted, so that the lever 3 moves into the cam groove 7 thereof. It is designed to be held in a fixed posture with its entrance facing the front.

Then, in the male side housing 2, the pin 8 is aligned with the entrance of the cam groove 7, and the ridge 1 which is connected to the rear of the pin 8 is formed.
6 along a guide groove 17 formed on the side surface of the female housing 1 and fitted to a predetermined position in the female housing 1,
After that, when the lever 3 is swung forward against the elastic force of the torsion coil spring 11, the housings 1 and 2 are attracted to each other through the engagement of the cam groove 7 and the pin 8, and are coupled to each other. By locking the locked member 18 provided on the No. 3 to the lock member 19 provided on the upper surface of the male housing 1, the locked state can be maintained. Here, it is structurally difficult to initially mount the torsion coil spring 11 between the lever 3 and the housing 1 in a state where the torsion coil spring 11 performs the above-described biasing 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 continuously with the accommodation hole 10 on the inner surface of the side plate 4, and before the lever 3 is assembled to the housing 1. , The extension end 11b of the torsion coil spring 11 to be locked by the locking projection 14 of the housing 1 is bent and fitted into the temporary locking groove 21 to temporarily assemble the lever 3, and then the lever 3 is assembled. Through hole 22 opened from the temporary locking groove 21 to the outer surface of the side plate 4
A needle-like jig or the like, and extend the extension end 11b into the temporary locking groove 2
1. Push out from the housing 1 and restore the elastic force by the locking projection 1 of the housing 1.
4 has been devised to be locked, and this technique is also known.

[0005]

By the way, in the case of temporarily assembling the torsion coil spring 11 as described above, conventionally, as shown in FIG. 7, the coil portion of the torsion coil spring 11 is fitted in the accommodation hole 10 and one of them is inserted. After fitting the extending end 11a into the locking groove 12, a pin-shaped jig x is applied to the side of the other extending end 11b extending and placed on the inner surface of the side plate 4, and the extending end 11a is extended by the jig x. Although 11b is pushed into one of the temporary locking grooves 21 and fitted therein, as shown in FIG. 8, since the extension end 11b is pushed by being hooked only on the tip of the jig x, the temporary locking groove is particularly When the resilience becomes strong near 21, the extended end 11b slips and easily comes off the jig x, which is a surprisingly difficult task.

[0006]

The lever type connector of the present invention has been completed in view of the above points, and a jig groove communicating with the temporary locking groove is formed on the inner surface of the side plate of the lever. It was formed.

[0007]

[Function] A pin-shaped jig is inserted into the jig groove while inserting it next to the extension end of the torsion coil spring that is not yet fitted in the temporary locking groove, and the jig is moved along the jig groove. When it is moved, the extension end is pushed midway in the length direction of the jig, swings to the position of the temporary locking groove against the elasticity, and finally the jig is tilted, so that the extension end is moved. It is fitted in the temporary locking groove.

[0008]

That is, according to the present invention, by forming the jig rocking groove into which the jig can be inserted, the jig is pierced against the moving surface of the extension end of the torsion coil spring. The effect that the extension end can be swung while pushing in the middle of the length direction, and the extension end can be easily and reliably fitted into the temporary locking groove without being removed from the jig during the swinging process. There is.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An 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 similar to those described in the section of the prior art, and only the improved portion of the temporary assembly 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 formed on the inner surface of the side plate 4 of the lever 3 described above.
The cam groove 7 having a substantially arc shape is formed in a range from the end surface on the side opposite to the side where the groove is formed and across the cam groove 7 to the temporary locking groove 21.
A jig groove 25 having the same depth as the above is formed. This embodiment has such a structure, and when the torsion coil spring 11 is temporarily assembled, first, the coil portion of the torsion coil spring 11 in the free state is fitted into the locking groove 12 while the one extending end 11a thereof is fitted into the locking groove 12. When fitted into the accommodation hole 10, as shown in FIG. 4 (A), the other extending end 11b is placed on the inner surface of the side plate 4 so as to cross the jig groove 25.

From this state, the pin-shaped jig x is inserted on the rear side in the moving direction of the extending end 11b of the jig groove 25. Thereafter, the jig x crosses the groove of the cam 7 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 extended end 11b is pushed by the jig x, the extended end 11b is swung against the elastic force and moved to just above the temporary locking groove 21, and finally the jig x is moved to the temporary locking groove. When extended to the 21 side, the extended end 11b
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, that is, the length Since the extension end 11b is pushed in the middle of the direction, the extension end 11b does not come off from the jig x during the swinging process.

The torsion coil spring 1 is provided at the tip of the jig x.
When the extended end 11b of No. 1 is pushed, it is easy to come off,
Particularly, since it is in the vicinity of the temporary locking groove 21 where the restoring elasticity is increased, for example, the jig groove 25 is formed only between the cam groove 7 and the temporary locking groove 21, and the extension end 11b swings. Initially jig x
Along the inner surface of the side plate 4, that is, the extension end 11b is pushed by the tip of the jig x, the jig x is sunk from the portion of the cam groove 7, and the jig groove 25 continued to the temporary locking groove 21. It is also possible to move the inside and push the extension end 11b, which also provides the effect of preventing the extension end 11b from coming off.

[Brief description of 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 showing a state where a lever of a female connector is removed.

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

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

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

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

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

FIG. 8 is a cross-sectional view showing an engaged 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 side connector housing 2 ... Male side 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)

[Claims] 1. A lever in which one of a pair of connector housings is formed in a U shape straddling the housing, and a side plate of which has a cam groove for engaging a follower provided in the other connector housing is freely swingable. One end of the torsion coil spring that is axially supported and is housed in a housing hole that is bored concentrically with the bearing hole of the support shaft on the inner surface side of the side plate of the lever is By locking the ends to the one of the housings, the lever is oscillated and urged to a posture in which the follower can be introduced into its cam groove, and after the both housings are temporarily fitted, the lever is twisted. By swinging against the elasticity of the cam groove and the follower, the two housings are attracted to each other to be coupled to each other, and the torsion plate is formed on the inner surface of the side plate of the lever. A lever-type connector provided with a temporary locking groove for temporarily locking before locking the other extended end of the coil spring to the one housing, wherein the temporary locking groove is provided on the inner surface of the side plate of the lever. A lever-type connector characterized by forming a jig rocking groove that communicates with it.