JP2002322865A - Window regulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent lowering of glass without using the reverse rotation preventive function of a motor. SOLUTION: This window regulator 10 has a carrier plate 18 lifting along a guide rail 13 connected with the glass 3, a rising cable 16 and a lowering cable 17 for lifting the carrier plate 18. A braking device 20 is arranged on the carrier plate 18 for frictionally engaging with the guide rail 13 when pushing-down force F is applied to the glass 3. The braking device 20 has a side plate 21 liftably supported by the carrier plate 18, and a brake plate 30 supported by the side plate 21 so as to frictionally engage with the guide rail 13 when the carrier plate 18 relatively lowers with the side plate 21. Thus, since the braking device prevents lowering of the glass by frictionally engaging with the guide rail, the reverse rotation preventive function of the power window motor can be omitted so that the size and weight can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable-type window regulator, and more particularly to a technology for preventing glass falling, which is effective for use in, for example, a side window of an automobile.

[0002]

2. Description of the Related Art As a window regulator for opening and closing a side window glass of an automobile using a power window motor, a guide rail fixed to a vehicle door, a carrier plate connected to the glass and moving up and down along the guide rail are provided. There is a cable-type window regulator provided with an ascending cable and a descending cable for driving the carrier plate up and down.

[0003] In this type of conventional window regulator, a structure is provided to prevent the glass from being forcibly pushed down by an external force and the window to be opened accidentally. A reverse rotation preventing function that does not reverse is used. That is,
When an excessive downward force is applied to the glass, the downward force is transmitted to the power window motor as a force for reversing the motor shaft by a descending cable or the like. When this reverse force is applied to the motor shaft, a thrust force directed in one axial direction acts on the motor shaft. Since the motor shaft is strongly pressed against the thrust bearing by the thrust force, the frictional force prevents the motor shaft from rotating in the reverse direction.

[0004]

However, in the above-described structure for preventing the glass from being pushed down of the window regulator utilizing the reverse rotation preventing function of the power window motor, the efficiency of the power window motor is extremely reduced by the reverse rotation preventing function of the power window motor. Since the height of the window regulator cannot be increased, there is a problem that the size and weight of the window regulator as a whole are hindered.

It is an object of the present invention to provide a window regulator which can prevent glass falling without using a reverse rotation preventing function of a power window motor.

[0006]

According to the present invention, there is provided a window regulator having a guide rail fixed to a vehicle door, a carrier plate to which glass is connected and which moves up and down along the guide rail, and drives the carrier plate up and down. In a window regulator including an ascending cable and a descending cable, a braking device that frictionally engages with the guide rail when a downward force is applied to the glass is provided on the carrier plate. It is characterized by.

According to the above-mentioned means, the lowering of the glass can be prevented by the frictional engagement of the braking device with the guide rail when a downward force is applied to the glass. The function of preventing reverse rotation can be omitted or reduced, and accordingly, the efficiency as a power window motor can be increased, and a reduction in size and weight can be promoted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a window regulator according to the present invention is a vehicle side door (hereinafter referred to as a side door).
It is called a door. 1) It is configured as a cable-type window regulator 10 that opens and closes the glass 3 of the window 2 installed in 1 and is built in the lower part of the door 1.

The cable-type window regulator 10 includes a power window motor (hereinafter, referred to as a motor) 11 using a motor with a worm gear reduction device. The motor 11 is configured to drive the drum 12 to rotate forward and reverse. ing. A guide rail 13 is vertically laid at a position separated from the motor 11 of the door 1, and an upper pulley 14 is provided at an upper end and a lower end of the guide rail 13.
And a lower pulley 15 are rotatably mounted on a shaft. Drum 12 of motor 11 and upper pulley 1 of guide rail 13
Cable 4 and the lower pulley 15
6 and the cable 17 for lowering are wound around, respectively, and one end of the cable 16 for raising and one end of the cable 17 for lowering are respectively locked by the carrier plate 18 supported by the guide rail 13 so as to be able to move up and down. . The glass 3 is connected to the carrier plate 18.
Are moved up and down together with the carrier plate 18.

As shown in FIG. 2, the carrier plate 18 is provided with a braking device 20 which frictionally engages with the guide rail 13 when an external force in a downward direction is applied to the glass 3 of the window 2. The braking device 20 includes a side plate 2 supported on the carrier plate 18 so as to be able to move up and down.
1 and a pair of brake plates 30, 30 supported by the side plate 21 so as to frictionally engage with the guide rail 13 when the carrier plate 18 descends relative to the side plate 21.

That is, the side plate 21 is formed in the shape of an angle steel, and a pair of guide holes 22 are formed in the vertical piece of the side plate 21 symmetrically with respect to a center line extending in the vertical direction. Have been. Both guide holes 2
2 and 22 are the side plates 2 of the carrier plate 18.
A pair of expansion members 2 protruding from the surface facing
3 and 23 are slidably fitted in the vertical direction within a predetermined stroke range. The two expansion members 23, 23 are formed in a vertically elongated substantially rectangular flat plate shape, and a pair of inclined surface portions 2 are provided at lower outer corners of the two expansion members 23, 23.
4 and 24 are formed respectively, and both inclined surface portions 24 and 24 are formed.
Numerals 24 are inclined so as to approach the center line toward the lower end.

On a vertically extending center line of an end face of the vertical piece of the side plate 21 opposite to the carrier plate 18, a pillar 25 formed in a columnar shape is projected at a right angle. Torsion spring 2
6 is wound. The torsion spring 26 includes a ring-shaped portion 27 and a pair of action portions 28, 28 formed in an inverted letter shape. Both action portions 28, 28 are line-symmetric with respect to the ring-shaped portion 27. Are located.
A cable locking hole 29 is formed in a lateral piece at the lower end of the side plate 21, and the cable 17 for lowering is locked in the cable locking hole 29. Incidentally, the ascending cable 16 is locked to the upper end of the carrier plate 18.

The pair of brake plates 30 and 30 are formed in the same semi-trapezoidal flat plate shape, and both brake plates 30 and 30 extend perpendicularly to the side plate 21 with the oblique sides disposed inside. It is arranged symmetrically with respect to the existing center line. A pair of inclined portions 31, 31 project at right angles to the oblique sides of the brake plates 30, 30, and the two acting portions 28, 28 of the torsion spring 26 are respectively attached to the inclined portions 31, 31, from outside. Locked. That is, both action parts 28 and 28 of the torsion spring 26 are
30 away from the guide rail 13 (inward direction)
, And the inclined portions 31, 31 of the brake plates 30, 30 are pressed against the inclined surfaces 24, 24 of the expansion members 23, 23 by the elastic force of the torsion spring 26. It is supposed to be.

Next, the operation of the window regulator 10 according to the above configuration will be described with reference to FIG.

As shown in FIG. 3 (a), when an external force F is applied to the glass 3 of the window 2 in the downward direction while the motor 11 is turned off, the carrier plate 18 is slightly lowered. 3A, the pair of expansion members 23, 23 are connected to the pair of brake plates 30, 3, as indicated by an arrow X in FIG.
0 is the two inclined surface portions 24, 24 and both the inclined portion pieces 31, 31
, The friction engagement surfaces 32, 32 on the outer surfaces of both brake plates 30, 30 are respectively pressed against the inner surfaces of the guide rails 13 to frictionally engage with each other.
The guide rails 13 of the two brake plates 30, 30
The carrier plate 18, that is, the glass 3 is fixed to the guide rail 13, so that the glass 3 is forcibly stopped against the external force F in the downward direction.

The above operation is not limited to the setting that occurs when an external force F in the downward direction is applied to the glass 3.
It can be set to occur by the gravity itself of the glass 3.

When the switch of the motor 11 is turned on, the downward cable 17 is pulled downward as shown by an arrow Y in FIG. As shown by an arrow X ′ in FIG. 3B, the pair of expansion members 23, 23 are moved up relative to each other, so that the two action portions 2 of the torsion spring 26 of the pair of brake plates 30, 30 are raised.
The movement in the inward direction by 8 and 28 is performed by the two inclined surfaces 24 and 2.
4 and the friction engagement surfaces 3 of both brake plates 30
The reference numerals 2 and 32 are separated from the inner surface of the guide rail 13 to release the frictional engagement. These two brake plates 3
When the frictional engagement of the 0 and 30 with the guide rail 13 is released, the carrier plate 18, that is, the glass 3 becomes free with respect to the guide rail 13, so that the glass 3 is pulled down by the descending cable 17.

FIGS. 4 and 5 show a braking device for a window regulator according to a second embodiment of the present invention.

The braking device 40 according to the present embodiment includes a side plate 41 supported on the carrier plate 18 so as to be able to move up and down, and the carrier plate 18 having the side plate 41.
And a brake plate 50 supported by the side plate 41 so as to frictionally engage the guide rail 13 when descending relative to the guide rail 13. The side plate 41 is formed in a rectangular flat plate shape.
A pair of guide portions 42, 42 formed in an angle shape is laid on one main surface symmetrically with respect to a center line extending in the vertical direction. The two guide portions 42 are fitted to both ends of the guide rail 13 so as to be slidable in the vertical direction. A pair of brackets 4 are provided at both ends in the horizontal direction of the cut-and-raised hole 43 formed at a substantially central portion of the side plate 41.
4, 44 are cut and raised, and both brackets 44, 4
4, a pair of shaft holes 45, 45 are respectively opened horizontally.

The side plate 41 is slidably fitted to a pair of guide portions 46, 46 projecting from one main surface of the carrier plate 18 at both ends in the horizontal direction, so that the side plate 41 can move up and down on the carrier plate 18. Supported. A cut-and-raised hole 47 is formed at a portion of the carrier plate 18 facing the cut-and-raised hole 43 of the side plate 41, and a stopper 48 is provided at an upper end side of the cut-and-raised hole 47.
Has been cut and raised horizontally. A locking piece 49 is cut and raised above the stopper 48 on the main surface of the carrier plate 18 opposite to the cut and raised side of the stopper 48, and the lifting cable 16 is locked to the locking piece 49. I have.

The brake plate 50 has a shaft hole 51 at an intermediate portion.
Is formed in a substantially rectangular flat plate shape, and the rivets 53 are inserted and caulked while the shaft holes 51 are aligned with the pair of shaft holes 45, 45 of the side plate 41 and the collar 52. By side plate 4
The pair of brackets 44 are rotatably supported between a pair of brackets 44. Carrier plate 1 of brake plate 50
An engagement piece 54 is bent at a right angle to the end on the 8 side,
The engagement piece 54 is provided in the cut-and-raised hole 4 of the carrier plate 18.
7 is inserted into the stopper 48 so as to engage with the stopper 48 from below. An end of the brake plate 50 on the side opposite to the engagement piece 54 is inserted through a guide hole 55 formed at a position facing the guide rail 13, and a locking hole 56.
The lowering cable 17 is provided in the locking hole 56.
Is locked. A friction engagement portion 57 is bent at a right angle at a position inside the guide rail 13 on the brake plate 50, and the tip of the friction engagement portion 57 is positioned inside the guide rail 13 when the brake plate 50 rotates. It is adapted to frictionally engage the surface.

Next, the operation of the braking device 40 according to the present embodiment will be described.

In the state where the switch of the motor 11 is OFF, as shown in FIG. 5 (c), when an external force F is applied to the glass 3 of the window 2 in the downward direction, the carrier plate 18 is slightly lowered. 5, the brake plate is pushed downward by the stopper 48 with the engagement piece 54 and is slightly rotated.
As shown by an arrow X in FIG.
7 are pressed into contact with the inner surfaces of the guide rails 13 and frictionally engage with each other. Since the carrier plate 18, that is, the glass 3 is fixed to the guide rail 13 by the frictional engagement of the brake plate 50 with the guide rail 13, the glass 3 is forcibly stopped against an external force F in the downward direction. Will be. The above operation is not limited to the setting that occurs when the external force F in the downward direction is applied to the glass 3, but can be set so as to occur due to the gravity itself of the glass 3.

When the lowering cable 17 is pulled downward as shown by the arrow Y in FIG. 5C by turning on the switch of the motor 11, the brake plate 50 is moved around the rivet 53. Fig. 5
As shown by the arrow X ′ in FIG. 3C, the friction engagement piece 57 is separated from the inner surface of the guide rail 13 to release the friction engagement. By releasing the frictional engagement of the brake plate 50 with the guide rail 13, the carrier plate 18, that is, the glass 3 becomes free with respect to the guide rail 13, and the glass 3 is pulled down by the descending cable 17.

FIGS. 6 and 7 show a braking device for a window regulator according to a third embodiment of the present invention.

The brake device 60 according to the present embodiment includes a lever 62 formed in a rod shape, and the lever 62 is brought into contact with a substantially central portion of the main surface of the carrier plate 18 opposite to the guide rail 13. The intermediate portion is pivotally connected to a pivot 61 so as to be freely rotatable. The lifting cable 16 is locked at one end of the lever 62, and the lowering cable 17 is locked at the other end. On the side of the lever 62 at which the cable 16 for ascending is locked, a columnar stopper 63 is protruded at a right angle. The stopper 63 is inserted through a guide hole 64 formed in the carrier plate 18 to be on the guide rail 13 side. It is projected to. Carrier plate 1
A spring seat 65 projects horizontally below the stopper 63 on the main surface of the guide rail 13 on the side of the guide rail 13, and one side surface (hereinafter referred to as a friction engagement surface) 13 a of the guide rail 13 of the spring seat 65. A guide plate 66 is erected vertically at the end opposite to the end.

Between the guide plate 66 and the frictional engagement surface 13a of the guide rail 13, a brake block 67 formed in a semi-trapezoidal block shape is disposed so that its inclined surface 68 faces downward, and A wedge member 69 formed by a roller is rotatably sandwiched between the inclined surface portion 68 of the brake block 67 and the frictional engagement surface 13a of the guide rail 13. The wedge member 69 is constantly urged upward by a compression coil spring 70 installed on the spring seat 65.

Next, the operation of the braking device 60 according to the above configuration will be described.

In the state where the switch of the motor 11 is OFF, as shown in FIG. 7A, when an external force F is applied to the glass 3 of the window 2 in the downward direction, the carrier plate 18 is slightly lowered. , The brake block 67 is lowered, so that the wedge member 6
Reference numeral 9 denotes a state in which it is engaged between the inclined surface portion 68 of the brake block 67 and the frictional engagement surface 13a of the guide rail 13, and frictionally engages with the frictional engagement surface 13a of the guide rail 13. Because of the frictional engagement, the carrier plate 18, that is, the glass 3 is fixed to the guide rail 13, so that the glass 3 is forcibly stopped against the external force F in the downward direction. The above operation is not limited to the setting that occurs when the external force F in the downward direction is applied to the glass 3, but can be set so as to occur due to the gravity itself of the glass 3.

When the lowering cable 17 is pulled downward as shown by the arrow Y in FIG. 7A by turning on the switch of the motor 11, the lever 62 pivots very slightly. As a result, the wedge member 69 separates from the bite between the inclined surface portion 68 of the brake block 67 and the frictional engagement surface 13a of the guide rail 13, and the frictional engagement surface 13a of the guide rail 13 is released. Release the frictional engagement with. By releasing the frictional engagement, the carrier plate 18, that is, the glass 3 becomes free with respect to the guide rail 13, so that the glass 3 is pulled down by the descending cable 17.

FIG. 8 shows a braking device for a window regulator according to a fourth embodiment of the present invention.

The braking device 80 according to the present embodiment includes a lever 82 formed in a substantially right-angled triangular flat plate shape, and the lever 82 abuts on the main surface of the guide rail 13 of the carrier plate 18 near the lower end. The intermediate portion is pivotally connected to a pivot 81 so as to be freely rotatable. Lever 82
A lifting cable 16 is locked at one end of the device, and a descending cable 17 is locked at the other end. A friction engagement portion 83 is formed in a substantially semicircular curved surface at a portion below the pivot 81 at the end of the lever 82 on which the lowering cable 17 is locked. 83 is adapted to frictionally engage with one side surface (hereinafter, referred to as a friction engagement surface) 13a of the guide rail 13. Immediately above the end of the carrier plate 18 on which the lifting cable 16 is locked, a spring seat 84 is projected, and a compression coil spring 85 is provided on the spring seat 84 with a lever 82 on the lifting cable 16 side of the lever 82. Is installed so as to constantly urge the end portion upward.

Next, the operation of the braking device 80 according to the above configuration will be described.

8A, when the external force F is applied to the glass 3 of the window 2 in the downward direction while the switch of the motor 11 is OFF, the carrier plate 18 is slightly lowered. By moving the lever 82 around the pivot 81, the frictional engagement portion 83 of the lever 82 is frictionally engaged with the frictional engagement surface 13a of the guide rail 13. Because of the frictional engagement, the carrier plate 18, that is, the glass 3 is fixed to the guide rail 13, so that the glass 3 is forcibly stopped against the external force F in the downward direction.
The above operation is not limited to the setting that occurs when the external force F in the downward direction is applied to the glass 3, but can be set so as to occur due to the gravity itself of the glass 3.

When the lowering cable 17 is pulled downward by the switch of the motor 11 as shown by the arrow Y in FIG. 8A, the lever 82 pivots very slightly. As a result, the friction engagement surface 83 is separated from the friction engagement surface 13a of the guide rail 13, and the friction engagement with the friction engagement surface 13a of the guide rail 13 is released. By releasing the frictional engagement, the carrier plate 18, that is, the glass 3 becomes free with respect to the guide rail 13, so that the glass 3 is pulled down by the descending cable 17.

It should be noted that the present invention is not limited to the above-described embodiment, but may be modified without departing from the scope of the invention.
It goes without saying that various changes can be made.

For example, in the above embodiment, the friction engagement surfaces 32, 32 of the brake plate 30, the friction engagement piece 57 of the brake plate 50, and the brake block 67
Although the inclined surface portion 68, the wedge member 69, and the frictional engagement portion 83 of the lever 82 are frictionally engaged with the guide rail 13 as they are, a process for increasing the frictional force is performed on these contact surfaces, Alternatively, a friction material may be separately attached.

In the above embodiment, the case where the present invention is applied to a window regulator using a power window motor is shown. However, if the main structure of the window regulator is the same, for example, the present invention is also applied to a manual window regulator. be able to.

Further, the window regulator is not limited to being installed on the side door of the vehicle, but may be installed on the rear door or sunroof of the vehicle.

[0041]

As described above, according to the present invention,
When a downward force is applied to the glass, the braking device frictionally engages with the guide rails to prevent the glass from falling, so that the reverse rotation prevention function of the power window motor can be omitted or reduced. Can increase the efficiency of the power window motor.
Small size and light weight can be promoted.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a side door of an automobile in which a window regulator according to an embodiment of the present invention is installed.

FIG. 2 is an exploded perspective view showing a main part of the window regulator.

FIG. 3 is a side view for explaining the operation,
(A) shows the press-down preventing action, and (b) shows the glass opening action.

FIG. 4 is an exploded perspective view illustrating a braking device of a window regulator according to a second embodiment of the present invention.

5 (a) is a side view thereof, and FIG. 5 (b) is bb of FIG. 5 (a).
FIG. 3C is a cross-sectional view along the line, and FIG. 3C is a cross-sectional view along the line cc in FIG.

FIG. 6 is an exploded perspective view showing a braking device for a window regulator according to a third embodiment of the present invention.

7A is a side view thereof, and FIG. 7B is bb of FIG. 7A.
FIG. 3C is a cross-sectional view taken along the line, and FIG.

FIG. 8 shows a braking device for a window regulator according to a fourth embodiment of the present invention, wherein (a) is a side view, (b) is a cross-sectional view taken along line bb of (a), (C) is sectional drawing which follows the cc line of (a).

[Explanation of symbols]

1 ... door (side door), 2 ... window, 3 ... glass,
10 Cable type window regulator, 11 Motor (power window motor), 12 Drum, 13 Guide rail, 14 Upper pulley, 15 Lower pulley, 16
... ascending cable, 17 ... descending cable, 18 ... carrier plate, 20 ... braking device, 21 ... side plate, 22 ... guide hole, 23 ... expansion member, 24 ... inclined surface portion, 25 ... prop, 26 ... torsion spring, 27 ...
Ring-shaped part, 28 ... Working part, 29 ... Cable locking hole,
DESCRIPTION OF SYMBOLS 30 ... Brake plate, 31 ... Inclined piece, 32 ... Friction engagement surface, 40 ... Braking device, 41 ... Side plate, 42
... Guide part, 43 ... Cut-up hole, 44 ... Bracket,
45: Shaft hole, 46: Guide part, 47: Cut-and-raised hole, 4
8 Stopper, 49 Locking piece, 50 Brake plate, 51 Shaft hole, 52 Collar, 53 Rivet, 54
... Engagement portion piece, 55 guide hole, 56 locking hole, 57 friction engagement piece, 60 braking device, 61 pivot, 62 lever, 63 stopper, 64 guide hole, 65 spring Seat, 66: guide plate, 67: brake block, 68: inclined surface portion, 69: wedge member, 70: compression coil spring, 80: braking device, 81: pivot, 82: lever, 83: friction engagement portion, 84: Spring seat, 8
5. Compression coil spring.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Isao Abe 1-2681, Hirosawa-cho, Kiryu-shi, Gunma F-term in Mitsuba Co., Ltd. 3D127 AA17 BB01 CB05 CC05 DF03 DF09

Claims (3)

[Claims] 1. A guide rail fixed to a door of a vehicle, a carrier plate to which glass is connected and which moves up and down along the guide rail, and an ascending and descending cable for driving the carrier plate up and down. A wind regulator, wherein a braking device that frictionally engages with the guide rail when a downward force is applied to the glass is provided on the carrier plate. 2. The braking device according to claim 1, wherein the side plate is supported by the carrier plate so as to be movable up and down, and the side plate is frictionally engaged with the guide rail when the carrier plate is lowered relative to the side plate. 2. The window regulator according to claim 1, further comprising: a brake plate supported by the window regulator. 3. The window regulator according to claim 2, wherein the brake plate is constantly biased by a spring in a direction away from the guide rail.