JPS6226533Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire loosening prevention device for a wire type wind regulator in an automobile.

As an automobile window regulator, a wire is stretched along a line that roughly matches the up-and-down locus of the window glass, and both ends of the wire are hung on a drum that rotates by rotating an operating handle, etc., and the drum is rotated. As a result, one end of the wire is wound around the drum, and at the same time the other end is unwound from the drum, causing the wire to move up and down the trajectory of the window glass.
A wire-type window regulator has been developed and is already in common use, which moves downward and raises and lowers the window glass connected to the wire.

In the wire-type wind regulator as described above, when assembling and fixing the wind regulator to a door panel or a vehicle body panel, it is difficult to assemble the wire with a predetermined tension applied to it. Further, the wire inevitably becomes loose due to elongation of the wire itself due to use.

If the wire is slack, the window glass will rattle in the vertical direction, making it impossible to move up and down smoothly, and if the wire is slack, there is a risk that the wire will come off the pulley and become inoperable.

The present invention provides a device that automatically prevents the wire from becoming loose as described above and can maintain the wire at a predetermined tension for a long period of time. This will be explained with reference to examples.

In FIGS. 1 and 2, 1 is a guide rail, and above and below the guide rail 1 are pulleys 2,
2', a glass bracket 3 fixed near the lower edge of the window glass is fitted onto the guide rail 11 so as to be slidable up and down, and the window glass is guided to the guide rail 1 via the glass bracket 3. It is designed so that it can be raised and lowered.

Reference numeral 4 denotes a drum rotatably attached to the base plate 7, and the drum 4 is rotatably driven via a pinion 6, a gear portion 41 integrated with the drum 4, etc. by rotation of the operating handle 5.

Reference numeral 8 denotes a connecting piece that connects the guide rail 1 and the base plate 7.

Reference numerals 9 and 9' denote intermediate pulleys rotatably attached to the base plate 7, and a wire 10, one end of which is wound and fixed around the drum 4, is hung from the intermediate pulley 9 and then from the upper pulley 2. The wire 10 is wrapped around the lower pulley 2', then the intermediate pulley 9', and the other end is wrapped around the drum 4 and fixed. It has a structure in which brackets 3 are connected.

Reference numeral 11 denotes an arm provided between the drum 4 and the intermediate pulleys 9, 9'.The arm 11 is rotatably attached to the base plate 7 at the center thereof by a shaft 13, and has wires 1 at both ends thereof.
Wire guides 12 and 12' are attached to which wires 10 are hung and which guide the wires 10.

The arm 11 is rotated in one direction by a spring 14, and the arm 11 is rotated by the engagement of a ratchet 11a formed on the arm 11 and a claw piece 15 rotatably attached to the base plate 7. The structure is such that it can rotate in the direction in which the spring 14 is biased, but is restricted from rotating in the opposite direction. 16 ratchets the claw piece 15 1
a spring 17 biased in the direction of engaging with 1a;
and 18 are stoppers for the arm 11 and the claw piece 15.

In the above configuration, when the drum 4 rotates by rotating the operating handle 5, for example, the wire 1
At the same time as the 10a-side end of the window 10a is rolled up by the drum 4, the 10b-side end is unwound from the drum 4, the glass bracket 3 is guided by the guide rail 1, moves upward, and the window glass rises.

When the drum 4 rotates in the opposite direction to the above, 10b
10a at the same time as the side end is rolled up into the drum 4
The side end portion is unwound from the drum 4, the glass bracket 3 is guided by the guide rail 1 and moved downward, and the window glass is lowered.

In this case, the portions 10a and 10b of the wire 10 between the drum 4 and the intermediate pulleys 9 and 9' slide on the arcuate circumferential surfaces of the wire guides 12 and 12' at both ends of the arm 11, but the wire is held under a predetermined tension. If the tension is maintained, the tension will be absorbed by the urging force of the spring 14 and the state shown by the solid line in FIG. 1 will be maintained.

When the wire 10 becomes slack, the spring 14
As a result, the arm 11 rotates counterclockwise in FIG. The wire 10 is held by the engagement of the claw pieces 15, and the slack of the wire 10 is absorbed.

Therefore, by appropriately setting the length of the arm 11 and the spring force of the spring 14 with respect to the distance between the wires 10a and 10b from the drum 4 to the intermediate pulleys 9, 9', it is possible to The wires on both sides that are unwound can always maintain a tensioned state with a predetermined tension for a long period of time, and the smooth operation of opening and closing the window glass can be maintained, which has a great practical effect. It is possible to bring about

In the illustrated embodiment, the intermediate pulleys 9, 9'
and the arm 11, claw piece 15, etc. on the base plate 7.
The example shown is that it is attached to base plate 7.
is small enough to allow only the drum 4 and pinion 6 to be attached, intermediate pulleys 9 and 9' are attached to the connecting piece 8 that connects the base plate 7 and the guide rail 1.
Then, the arm 11, claw piece 15, etc. will be attached. The intermediate pulleys 9, 9' may be attached to the guide rail 1.

Further, as the intermediate pulley, one pulley having two wire hanging portions is used, and the wires 10a and 10
The present invention is also applicable to a type in which the wire guides 12 and 12' provided at both ends of the arm 11 are respectively hung on two wire hanging portions of one intermediate pulley. The shape of the pulley is not limited to the embodiment, and the shape of a pulley that can rotate with respect to the arm 11 may be used. The wire guides 12, 12' are preferably made of synthetic resin.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the present invention; FIG. 1 is an overall front view, and FIG. 2 is a sectional view taken along line XX in FIG. 1. 1... Guide rail, 2, 2'... Pulley, 3
... Glass bracket, 4 ... Drum, 5 ... Operation handle, 6 ... Pinion, 7 ... Base plate, 8 ... Connection piece, 9, 9' ... Intermediate pulley,
10... wire, 11... arm, 11a... ratchet, 12, 12'... wire guide, 13
... shaft, 14 ... spring, 15 ... claw piece.

Claims (1)

[Scope of utility model registration request] A base plate on which a drum is rotatably attached, which is rotated by the operation of an operating handle, is connected to a guide rail with pulleys attached on the upper and lower sides, either directly or via a connecting piece, and an intermediate A pulley is provided, and both ends of the wire stretched between the upper and lower pulleys are hung on the intermediate pulley, and then wound and fixed around the drum, and the two wires between the drum and the intermediate pulley are The central part of an arm having wire guides attached at both ends, on which wires are hung, is rotatably attached to a base plate or a connecting piece, and a spring is provided to rotate the arm in a direction in which the two wires are stretched, and the arm Preventing wire loosening of a wire type wind regulator, characterized in that a base plate or a connecting piece is provided with a pawl portion that engages with a ratchet portion of the arm and restrains rotation of the arm in a direction opposite to the biasing force of the spring. Device.