JPS6137741Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a wind regulator using a control cable having a drive device with a mechanism for automatically absorbing the permanent elongation of the inner cable.

Window regulators are widely used to open and close window glass in automobiles, etc., and conventionally, such window regulators use gears for the drive device and open and close the glass by raising and lowering the glass with an arm meshed with the gear. The format is well known. This device uses many parts press-molded from iron plates, such as gears and arms, making it mechanically complex and expensive, and the device as a whole is relatively large and extremely heavy. In order to solve this problem, various proposals have been made for devices using toothed cables having spiral teeth, such as in Japanese Patent Application Laid-open No. 51-108424. The need for a rigid guide pipe with slits along its length increases the size of the device, which requires large cutouts in the door panels of, for example, automobiles. Furthermore, since it is a large device that uses a rigid guide pipe, it is extremely difficult to install it inside the door. Furthermore, since the toothed cable slides inside the guide pipe, the spiral teeth come into sliding contact with the inner circumferential surface of the guide pipe, which inevitably generates noise every time it is operated, causing discomfort to the occupants of the car. It is the cause. Furthermore, a device using a wire has also been proposed as disclosed in Japanese Utility Model Application Publication No. 55-103376.
This device is divided into two devices: a wire winding and unwinding mechanism (drive device) made of stranded metal wire, and a guide rail portion (follower device) on which the window glass slides, and the wire runs between them. It transmits power. Since the device of such a wind regulator is divided, it is necessary to attach each device to the car door separately and then run the wire between the drive device and the driven device, and the tension of the wire must be adjusted. adjustments must be made,
The assembly work of the wind regulator is extremely complicated. In addition, wires that do not use conduits must be wired in a planar or two-dimensional manner in order to transmit power, which has the disadvantage that the installation position is restricted and a large space is required.

A wire made of stranded metal wire undergoes permanent elongation (irreversible elongation) due to the load applied to it.
This growth is particularly large in the early stages of use. Due to this elongation, there is play between the operation of the drive device and the following of the window glass, and the window glass does not follow the operation of the drive device accurately, and the stretched wire is wound and unwound to a certain position. This causes serious accidents such as buckling fatigue and wire breakage. Furthermore, there is a risk that the wire may become detached from the pulley, guide groove, etc. due to elongation, and become inoperable. In order to absorb such wire elongation, conventional wind regulators have a tension pulley mechanism added to the pulley that the wire engages with, and by moving the tension pulley, the wire elongation is absorbed. A method is used to remove it. However, with this type of structure, the wire elongation absorption must be adjusted every time there is play, and this work is extremely troublesome, but adjustment is easy depending on the installation location within the door panel. The disadvantage is that it is not. Furthermore, since a wire elongation absorbing device is separately provided in addition to the drive device and the driven device, there is also the drawback that the wind regulator cannot be made compact.

The main purpose of the present invention is to eliminate the drawbacks of conventional wind regulators as described above, use a drive device equipped with a mechanism that can automatically absorb the elongation of the wire, and use a flexible control cable. To provide the wind regulator used.

The wind regulator of the present invention will be explained with reference to the drawings. In the following description, a wind regulator for an automobile will be used as a representative example. In FIG. 1, reference numeral 1 denotes a guide rail which can be attached to the inside of an automobile door. Reference numeral 3 designates a bracket having a locking groove 3a capable of locking the slide shoe 2 sliding along the guide rail 1 and locking members 91b, 92b fixed to one ends of the inner cables 9a, 9b. A guide member 4 to which an inner cable is slidably engaged is attached to one end of the guide rail 1, and a cable guide 5 is fixed to the other end of the guide rail. One end of two flexible conduits 7a, 7b of a control cable 6 (hereinafter simply referred to as cable) through which inner cables 9a, 9b are inserted is fixed to the end of the cable guide. The other ends of the conduits 7a, 7b are connected to the casing 11 of the drive device 8.
In FIG. 2, a shaft 12 which can be rotated by a lever 10 is pivotally supported on the casing. A first pulley 13 is fitted onto the shaft 12 so as to rotate together, and a first ratchet tooth 13a of an appropriate width is carved on one side of the first pulley, and a first ratchet tooth 13a of an appropriate width is carved on the entire circumference of the first pulley. An inner cable locking hole 13b is bored at a position. 14 is a second pulley which is closely connected to the first pulley and pivoted to the shaft 12 so as to be rotatable and to be able to move to some extent in the axial direction;
Furthermore, a second ratchet tooth 14a that meshes with the first ratchet tooth 13a is carved on one side, a cavity 14c is provided on the other side, and an inner cable locking hole 14b is provided at an appropriate position on the outer peripheral surface. is drilled.
Reference numeral 15 denotes a spiral spring that can be installed in the space 14c, one end of which is attached to the second pulley 14, and the other end of which is attached to the casing 11.
Each can be locked in place. Reference numeral 16 denotes an elastic member that presses the second pulley 14 against the first pulley 13.

Next, the locking member 91a fixed to one end of the inner cable 9a inserted into the conduit 7a in the cable is
The end 91 of the inner cable is locked and fixed in the inner cable locking hole 13b drilled in the first pulley 13, and when the lever 10 is rotated in the direction B as shown in FIG. 4, the end 91 of the inner cable is wound around the first pulley. The other end passes through the first guide groove 5a of the cable guide and connects to the bracket 3.
The locking member 91b at the other end is connected to the locking groove 3a.
It is locked to. Inner cable 9 inserted into conduit 7b
The locking member 92a fixed to one end of b is locked to the inner cable locking hole 14b formed in the second pulley 14, and when the lever 10 is rotated in the direction B as shown in FIG. The inner cable 9b is unwound from the second pulley 14, and is engaged with the guide member 4 through the second guide groove 5b of the cable guide 5, and the inner cable 9b is inserted into the locking groove 3a provided in the bracket 3. A locking member 92b fixed to the other end is locked. In this case, the ratchet teeth are oriented such that when the first pulley is rotated in one direction (for example, direction B in FIG. 2), it does not mesh and rotates idly.

The function and effect of the wind regulator of the present invention will be explained. Lever 1 fixed to shaft 12
0 is rotated in the B direction, the first pulley to which the shaft 12 is fitted also rotates in the B direction, and the end 91 of the inner cable 9a is pulled in the G direction and wound around the first pulley. Thus, the bracket 3, to which the locking member 91b fixed to the other end of the inner cable 9a is locked, is pulled and slid in the D direction. Furthermore, when the inner cable does not stretch or slack, the inner cable 9b is also moved in the D direction by the locking member 92b fixed to one end of the inner cable 9b that is locked in the locking groove 3a of the bracket 3 that has slid in the D direction. The sliding direction of the inner cable is changed to the C direction by the guide member 4, and the second cable of the cable guide
The inner cable is slid in the H direction through the guide groove 5b and inside the conduit 7b, and the end portion 92 of the inner cable wound around the second pulley of the drive device 8 is pulled in the H direction and unwound, and the second pulley is moved in the B direction. Rotate it. Next, when the lever 10 is rotated in the direction A, the inner cable 9
b is wound around the second pulley, the inner cable 9a is unwound from the first pulley, and the bracket 3 slides in the C direction.

To summarize the above-mentioned action, when the lever 10 is rotated in the B direction when the inner cable is not stretched, both the first pulley and the second pulley rotate in the B direction, and the inner cable 9a wound around both pulleys is rotated. , 9b are wound and rewound, and the bracket 3 slides in the D direction to open the window glass, and when the lever 10 is rotated in the A direction, the bracket 3 slides in the C direction to close the window glass. Can be done.

Inner cable 9 in the wind regulator of the present application
If any elongation occurs in a or 9b, the elongation is absorbed by rotating the lever 10 in the direction B. That is, when the lever 10 is rotated in the B direction, the end portion 91 of the inner cable is wound up by the first pulley and slides in the G direction. However, due to slack in the inner cable, the end 92 of the inner cable wound around the second pulley does not move immediately in the H direction, so the second
The pulley is stopped while being pressed against the first pulley 13 by the elastic member 16. Therefore, the ratchets do not mesh and only the first pulley rotates until an appropriate tension is applied in the B direction to absorb the elongation. When the absorption of the elongation is completed, the end 9 of the inner cable on the second pulley side
2 slides in the H direction again and pulls the second pulley B
direction as if it were integral with the first pulley. In this way, the elongation of the inner cable caused by the winding and unwinding operations of the inner cable in the drive device is automatically absorbed, so there is no play in the driven device, and accurate operation can always be achieved. .

Furthermore, in the case of a wind regulator having a drive device as described above, after the device is attached to the door, there is no adjustment work to apply a constant tension to the inner cable as in the conventional method, and each pulley is pre-inserted. If the cable is wound around the cable, the predetermined tension can be automatically obtained by simply rotating the lever.

Next, a cavity 14 provided in the second pulley 14
A spiral spring 15 (hereinafter simply referred to as a spring) is attached to c, one end of the spring is locked to the second pulley 14, and the other end is locked to the casing 11, so that the second ratchet teeth 14a are oriented in the direction in which they do not mesh (direction A). Said second pulley 14
It is attached as if it were energized. Lever 1
0 in the B direction to absorb the elongation of the inner cable, the second pulley is attached in the A direction by the spring 15, so the spring 15 rotates against the second pulley until the inner cable receives a certain tension. act as a brake. This has the effect of absorbing the elongation of the inner cable more accurately. In addition, the spring 15 is wound up by the second pulley, which rotates in direction B, when the stretch is absorbed. That is, since the window glass is rolled up in the direction D in which it is lowered, the operating force required to wind up the spring 15 is relatively light due to the weight of the glass. Next, when you turn the lever 10 in the A direction to raise the window glass, the operating force would normally be very heavy due to the weight of the glass, but since the spring 15 is already fully wound in the B direction, , the strong biasing force of the spring 15 against the second pulley in the direction A allows the window glass to be raised with a relatively light operating force. That is, in this embodiment, since the spring 15 also functions as a balance spring, there is an excellent effect that there is little difference in the operating force between the upper and lower sides of the window glass, and smooth operation can be achieved.

Furthermore, the wind regulator of the present invention has the advantage of being extremely light in weight compared to conventional wind regulators. In other words, conventional arm-type wind regulators weigh 1200g to 1300g for medium-sized cars, excluding the glass.
The wind regulator of this invention weighs 550g, making it possible to reduce the weight by more than 50% and save resources.
It can greatly contribute to reducing the weight of automobiles, etc. to save energy. Furthermore, in the wind regulator of the present invention, one end of the conduits 7a, 7b of the cable 6 is arranged and fixed to one end of the guide rail 1, and a drive device is fixedly connected to the other end of the conduit. Since the cable 6 has excellent flexibility, it has a high degree of freedom in attaching to the door on the drive side and the driven side (around the guide rail). 6th without any hindrance to
As shown in the figure, it can be attached to the door three-dimensionally or three-dimensionally, which is an unprecedented effect, and it also has the excellent effect of having a wide range of versatility regardless of the type of car.

In addition, although FIG. 1 shows an example in which the window glass is installed with the guide member 4 at the top so that it rises in the direction C, conversely, the window glass is installed in the direction D with the guide member 4 at the bottom.
It goes without saying that the bracket may be mounted so that it rises in the direction of the object and used in the opposite direction.

[Brief explanation of the drawing]

The drawings relate to the present invention; FIG. 1 is a partially cutaway front view showing an outline of one embodiment, FIG. 2 is a perspective view showing the disassembled state of the drive device, and FIG. 3 is a cross-sectional view of the drive device. A side view, FIG. 4 is a cross-sectional rear view taken along the - line in FIG. 3, FIG. 5 is a cross-sectional rear view taken along the - line in FIG. It is. Main symbols in the drawing: 1: Guide rail, 2: Slide show, 3: Bracket, 3a: Locking groove,
4: Guide member, 5: Cable guide, 6: Control cable, 7a, 7b: Conduit, 8: Drive device, 9a, 9b: Inner cable, 10: Lever, 11:
Casing, 12: Shaft, 13: First pulley, 13
a: first ratchet tooth, 13b, 14b: inner cable locking hole, 14: second pulley, 14a: second ratchet tooth, 14c: void, 15: spiral spring, 16: elastic member.

Claims (1)

[Claims for Utility Model Registration] 1. A window regulator that opens and closes a window glass by winding and unwinding a control cable around an inner cable, comprising at least one guide rail and an inner cable that is engaged in an appropriate position. a bracket having a slide shoe which is stopped and slid along the guide rail, to which a window glass is attached; a guide member attached to one end of the guide rail and with which an inner cable is slidably engaged; A cable guide fixed to the other end of the rail, two flexible conduits having one end connected to the cable guide and through which the fleshy cord is inserted, and a cable guide fixed to the other end of the conduit and wound around both ends of the inner cable. The drive device consists of a shaft that is pivotally supported by the casing and can be rotated by a lever, and a drive device that is fitted onto the shaft and extends around the entire circumference of one side. A first ratchet tooth is engraved on the first pulley, the first pulley is in close contact with the shaft, and is rotatably supported on the shaft so as to be movable to some extent in the axial direction. The second pulley has second ratchet teeth engraved thereon, and the other side is cylindrical with a bottom and has a cavity, and an elastic member for pressing the second pulley against the first pulley. , characterized in that the inner cable is configured to automatically absorb permanent elongation of the inner cable by winding or unwinding the inner cable that is locked and wound in the locking hole provided in each of the second pulleys. A wind regulator with a drive device equipped with a mechanism. 2. Utility model registration claim 1, characterized in that a spiral spring is installed in the cavity of the second pulley, and one end of the spiral spring is locked to the second pulley, and the other end is locked to the casing. Wind regulator as described in section.