JPS58117189A - Apparatus for automatically adjusting of extension of cable in window regulator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to an automatic extension adjustment device that automatically adjusts cable extension in a window regulator, particularly a wire type window regulator.

In wire type window regulators, the first
As shown in the figure, the cable 3 fed out from the winding drum 2 installed in the housing 1 is passed through the outer casing 4 and the guide piece 5, and then placed on a slider (not shown) that moves along the guide 6. The window glass is raised and lowered by moving the slider.

By the way, when setting the cable 3, if the play L is not provided on the guide piece 5 side or the housing 1 side, the outer casing 4 and the cable 3 will stick together, making assembly difficult.

On the other hand, if this play is made too long in view of variations in the component parts, the cable 3 will become slack even after assembly, which will impede smooth operation.

Further, the cable 3 almost always stretches due to temperature changes or long-term use.

If this elongation is severe in combination with the above-mentioned slack, the cape and loop 3 may come off from the winding drum 2 or may not be wound around the housing 1 and become inoperable. It may become impossible to ascend or descend.

Therefore, conventionally, in order to adjust the elongation of the cable including such play, an adjustment spring has been interposed, for example, in the middle part of the outer casing or in the slider part. However, since these springs are simply compression springs, they will shrink to the height of the tight contact when subjected to high load torque on the winding drum side, and the stress and load will be large, and it will be necessary to compensate for the elongation of the cable and the variations in all the component parts. Therefore, the shrinkage margin becomes quite long, and it is difficult to practically satisfy all of these requirements.

The present invention was made to solve the above problems,
In a wire-type twinoid regulator in which a winding drum is installed in the housing, a cable fed out from the winding drum is inserted into the outer casing, and then connected to the slider side, an annular groove with a serrated cross section is formed on the outer periphery. an elongation adjusting sleeve attached to the winding drum side end of the outer casing so as to be inserted into the set hole of the housing;
a regulating snap ring for regulating the movement of the sleeve toward the winding drum through the set hole of the housing; a spring retaining snap ring fitted to a position of the sleeve near the outer casing; the snap ring and the housing. and a spring interposed between.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 2 and 3, the device of the present invention includes a housing 1 having a set hole 9 and a slit 10 intersecting with the set hole 9, and a sawtooth cross section formed by a vertical surface and a gentle slope. An annular groove (see FIG. 4) 7 is provided on the outer periphery, the outer diameter is selected so that it can be inserted into the set hole 9 of the housing 1, and the outer casing 4 is attached to the housing side end with the sloped side facing. An adjustment sleeve 8 and a sleeve inserted through the slit 10 and engaged with the groove 7 of the sleeve 8 in order to restrict movement of the sleeve 8 inserted into the set hole 9 of the housing 1 toward the side opposite to the outer casing 4. A snap ring 11 for regulation III, a spring retaining snap ring 12 fitted into the outer casing 4 side of the sleeve 8 protruding outside the housing 1, and a compression ring interposed between the snap ring 12 and the housing 1. It consists of a spring 13.

Next, a specific assembly procedure using the apparatus of the present invention will be explained.

First, as shown in FIG. 5, the sleeve 8 is inserted into the housing 1 through the set hole 9 and moved toward the winding drum 2, and the play L is created between the kite piece 5 and the outer casing 4 as in FIG. is formed, and the cable 3 is set in this state. Note that the spring 13 is inserted into the outer casing 4 in advance.

After setting the cable 3, as shown in Figure 6,
The outer casing 4 is moved toward the guide piece 5 until there is no more play, and the sleeve 8 is positioned in the set hole 9 of the housing 1. Next, insert the spring nut spring 11 into the slit 10 of the housing 1, and remove the sleeve 8.
is locked to restrict movement toward the winding drum 2 side. In this case, the groove 7 of the sleeve 8 is serrated, and the sleeve 8
Since the snap ring 11 can be moved toward the outer casing 4 by pushing the snap ring 11 apart, the snap ring 11 may be inserted into the slit 10 in advance.

After eliminating the play L in the cable 3 as described above, the spring 13 is pressed against the housing 1, and the snap ring 12 is fitted to the end of the sleeve 8 on the outer casing 4 side. As a result, the snap ring 12 and the housing 1
This means that the compression spring 13 is interposed between the two (see Figures 2 and 3). Therefore, the sleeve 8 is always connected to the outer casing 4 by the force of the spring 13.
When the cable 3 is forced to the side and stretches,
The sleeve 8 advances by pushing the snap ring 11 apart by the amount of the elongation, and automatically absorbs the elongation of the cable.

Further, in the above case, the high load torque on the winding drum 2 side does not act on the spring 13 at all, so no load is placed on the spring 13.

As described above, according to the present invention, (1) spring settings are easy because the variations in each component and the cable elongation can be adjusted individually.

(2) Since the spring can be set after assembly, no extra force is required during assembly, making the work easy.

(3) The cable can be adjusted for a long time.

(4) As long as the snap ring is not installed, the cable length and outer casing length are sufficient, so assembly is easy.

(5) High load torque on the handle side (winding barrel side) does not place a burden on the spring.

Various excellent effects such as these can be obtained.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of cable setting in a conventional window regulator, Fig. 2 is a perspective view showing an embodiment of the present invention, Fig. 3 is a sectional view of Fig. 2, and Fig. 4 is a sectional view of the sleeve. , FIG. 5, and FIG. 6 are explanatory diagrams of the procedure for assembling the device of the present invention. 1... Housing 2... Winding barrel 3... Cable 4... Outer casing 5... Guide piece 7... Groove 8... Sleeve 9... Set hole 10...
Slit 11, 12...Snap ring 13...Spring Patent applicant Shiraki Metal Industry Co., Ltd. Agent Patent attorney Haruatsu Ijima Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] In a wire-type twinoid regulator in which a winding drum is installed in the housing, a cable fed out from the winding drum is inserted into the outer casing, and then connected to the slider side, an annular groove with a serrated cross section is connected to the outer periphery. an elongation adjusting sleeve attached to the end of the winding drum side of the outer casing so as to be inserted into the set hole of the housing;
a control snap ring that restricts the movement of the sleeve toward the winding drum through the set hole of the housing; a spring retaining snap ring that is fitted into the sleeve at a position closer to the outer casing; and the snap ring. An automatic cable extension adjustment device for a window regulator, comprising a compression spring interposed between the housing and the housing.