JPH0224981B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wind regulator, particularly to an automatic stretch adjustment device for automatically adjusting the stretch of a cable in a wire type wind regulator.

In a wire type wind regulator, generally, as shown in FIG. The window glass is connected to a slider (not shown) that moves along the window, and the window glass is raised and lowered by the movement of the slider.

By the way, when setting the cable 3, there is a play L on the guide piece 5 side or the housing 1 side.
If this is not provided, the outer casing 4 and the cable 3 will stick together, making assembly difficult. on the other hand,
If this play L is made too long considering the 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 cable 3 may come off from the winding drum 2, or it may not be wrapped around itself and become haphazardly wrapped inside the housing 1, making it inoperable, and the window glass cannot be raised or lowered. It may become impossible.

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 contract to the contact height when subjected to high load torque on the winding drum side, resulting in a large stress and load.
In order to compensate for the elongation of the cable and the variations in all the component parts, the shrinkage margin is quite long, and it is difficult to satisfy all of these requirements in practice.

The present invention was made in order to solve the above problem, and the present invention is a wire in which a winding drum is installed in a housing, a cable fed out from the winding drum is passed through the inside of the outer casing, and then connected to the slider side. In the type wind regulator, an elongation adjusting sleeve is provided with an annular groove with a serrated cross section on the outer peripheral surface and is 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 that restricts the movement of the sleeve toward the winding drum through the set hole of the housing, a spring retaining snap ring fitted in a position near the outer casing of the sleeve, and a space between the snap ring and the housing. The invention is characterized in that it comprises a spring interposed in the.

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:
A housing 1 is provided with a set hole 9 and a slit 10 intersecting with the set hole 9, and an annular groove 7 with a serrated cross section (see Fig. 4) formed by a vertical surface and a gentle slope is provided on the outer periphery. The diameter is selected so that it can be inserted into the set hole 9 of the housing 1, and the adjustment sleeve 8 is attached to the housing side end of the outer casing 4 so that the slope side faces In order to restrict the movement of the sleeve 8 toward the side opposite to the outer casing 4, the sleeve 8 is inserted through the slit 10.
a snap spring 11 for regulating the sleeve that engages with the groove 7 of the housing 1; a snap spring 12 for retaining a spring that is fitted into the outer casing 4 side of the sleeve 8 that projects outside the housing 1; It consists of an interposed compression 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 guide piece 5 and the outer casing 4 as in FIG. In the formed state,
In this state, the cable 3 is set. Note that the spring 13 is inserted into the outer casing 4 in advance.

When the setting of the cable 3 is completed, as shown in FIG.
into the set hole 9 of the housing 1.
Subsequently, the snap ring 11 is inserted through the slit 10 of the housing 1 to lock the sleeve 8 and restrict its 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 out the snap ring 11, the snap ring 11 may be inserted into the slit 10 in advance.

After the play L of the cable 3 is eliminated 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 compression spring 13 is interposed between the snap ring 12 and the housing 1 (see FIGS. 2 and 3). Therefore, the sleeve 8 is always held against the outer casing 4 by the force of the spring 13.
When the cable 3 is biased toward the side and stretches, the sleeve 8 pushes the snap spring 11 apart by the amount of the stretch and moves forward, automatically absorbing the stretch 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 individually adjusted;

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

(3) The cable adjustment allowance can be made longer.

(4) As long as the snap spring 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 drum side) does not place a burden on the spring.

Various excellent effects such as these can be obtained.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional wind regulator at the time of cable setting, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is a sectional view of FIG. 2.
FIG. 4 is a sectional view of the sleeve, and FIGS. 5 and 6 are explanatory diagrams of the procedure for assembling the device of the present invention. DESCRIPTION OF SYMBOLS 1... Housing, 2... Winding drum, 3... Cable, 4... Outer casing, 5... Guide piece, 7... Groove, 8... Sleeve, 9... Set hole, 10... Slit, 11 , 12...Snat spring, 13...Spring.

Claims (1)

[Claims] 1. In a wire-type wind regulator in which a winding drum is installed in a 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 sawtooth cross section is used. an elongation adjusting sleeve provided on the outer periphery and 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 regulating snap spring that regulates the spring at the outer casing; a spring retaining snap spring that is fitted in a position of the sleeve near the outer casing; and a compression spring that is interposed between the snap spring and the housing. An automatic cable stretch adjustment device for a wind regulator, characterized by: