JP2001003635A - Window regulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window regulator of the-wire type which tracts a window pane by means of wires to raise and lower it, without the need for any special operations for adjusting the inclination of the window pane after assembly. SOLUTION: Torque produced by a motor 27 is transmitted to two drums 51, 52 via a differential gear 28, and two slider bases 55, 56 are moved by wires 53, 54 wound on the respective drums 51, 52. Once lifted to the top dead center, a window pane W can be automatically adjusted to a horizontal position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window regulator for raising and lowering a window glass such as a vehicle door, and more particularly to a wire type window regulator for pulling and raising and lowering a window glass with a wire driven by a motor.

[0002]

2. Description of the Related Art FIG. 6 shows a window regulator for raising and lowering a window glass of a side door of an automobile. In this figure, rail-shaped guides 1 and 2 are spaced apart in the width direction of the window glass W (the front-rear direction of the vehicle) and arranged in parallel in the direction in which the window glass W moves up and down. It is fixed to.

The upper pulleys 3 and 4 are located near the upper ends of the guides 1 and 2 (upper end or its vicinity), respectively.
Is provided. In addition, lower pulleys 5 and 6 are provided near the lower ends of the guides 1 and 2 (the lower end or its vicinity), respectively.

[0004] A drive unit 10 including a motor 7 capable of forward and reverse rotation and a drum 8 driven to rotate by the motor 7 is disposed between the guide 1 and the guide 2 and fixed to a door panel (not shown). The wire 9 is wrapped from the drum 8 to the lower pulley 5 and the upper pulley 3 on the guide 1 side, and then is wrapped over the lower pulley 6 and the upper pulley 4 on the guide 2 side to return to the drum 8 so as to be crossed. Has been hung around. The wire 9 is wound around the drum 8 a plurality of turns.

[0005] Due to the crossing of the wire, the stretched portion of the wire 9 between the upper pulley 3 and the lower pulley 5
It will move up and down in the same direction as the stretched portion between the upper pulley 4 and the lower pulley 6.

[0006] A slider base 11 for supporting the front lower end position of the window glass W is provided with an upper pulley 3.
A slider base 12, which is locked to a stretched portion between the lower pulleys 5 and supports a rear lower end position of the window glass W, has a wire 9.
At a tension portion between the upper pulley 4 and the lower pulley 6.

With the above configuration, when the motor 7 rotates forward,
The drum 8 rotates in a predetermined direction, the wire 9 wound around the drum 8 moves, the slider bases 11 and 12 rise, and the window glass W also rises. On the other hand, the motor 7
Is reversed, the slider bases 11 and 12 are lowered, and the window glass W is also lowered.

[0008]

In the window regulator having the above-described structure, the assembling positions of the components (for example, the upper pulleys 3 and 4 and the lower pulleys 5 and 6) may be varied during assembly.
And the slider bases 11 and 12 and the wire 9 vary, so that the slider base 11 and the slider base 12 do not have the same height. In many cases, the supported window glass W is tilted with respect to the window frame (door sash or the like) and cannot be normally closed.

Therefore, after assembling, it is necessary to adjust the window glass W to a horizontal position. In this adjustment operation, the window glass W is shifted relative to the slider bases 11 and 12 at the top dead center positions of the slider bases 11 and 12, and the window glass W is moved to a normal closed position (horizontal position). After this movement, the window glass W is fixed to the slider bases 11 and 12.

As described above, in the conventional window regulator, after the assembly, the work of adjusting the inclination of the window glass becomes necessary.
There is a problem that the number of assembly steps increases. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a first object of the present invention is to provide a window regulator that does not require a window glass inclination adjustment operation after assembly.

A second object of the present invention is to provide a window regulator which does not require a window glass inclination adjusting operation after assembly with a simple configuration.

[0012]

According to the present invention, which solves the above-mentioned problems, the invention according to claim 1 is arranged in parallel in the width direction of the window glass and in the vertical direction of the window glass. First and second guides, first and second upper pulleys arranged near upper ends of the first and second guides, and first and second upper pulleys arranged near lower ends of the first and second guides, respectively. 2 lower pulleys, a motor that can rotate forward and reverse, and a rotation input unit that receives rotation force from the motor,
The first and second rotation output units include a rotation speed Na of the rotation input unit, a rotation speed Nb of the first rotation output unit, and a rotation speed N of the second rotation output unit.
c, a first drum connected to a first rotation output unit of the differential device, and a second rotation output unit of the differential device that rotates so that the relationship of Nb + Nc = 2Na holds. A first wire wound around the first drum, and a second wire connected to the first upper pulley and the first lower pulley, and a second wire connected to the second upper pulley and the second lower pulley. The second wire is wound around the second drum so that the stretched portion between the second upper pulley and the second lower pulley moves up and down in the same direction as the stretched portion between the first upper pulley and the first lower pulley of the first wire. While supporting the second wire and the window glass,
A first slider base, which is locked to a tension portion between the first upper pulley and the first lower pulley of the first wire and moves up and down the window glass by moving along the first guide, and supports the window glass; A second slider base which is locked to a tension portion between a second upper pulley and a second lower pulley of the second wire and moves up and down the window glass by moving along the second guide. It is a feature.

In the present invention, when the motor rotates forward, this rotation is transmitted to the first and second drums via the differential device, and the first and second drums rotate in a predetermined direction and are wound around the first and second drums. The first and second wires are moved, the first and second slider bases are raised, and the window glass is also raised. On the other hand, when the motor reversely rotates, the first and second slider bases move down, and the window glass also moves down.

In this window regulator, at the time of assembly, the first slider base and the second slider base do not have the same height, and the window glass supported front and rear by the first and second slider bases is positioned with respect to the window frame. Even if it is tilted, once the window glass is raised to the top dead center (the highest position), the window glass can be automatically adjusted to the horizontal position.

That is, when the motor is rotated forward, this rotation is transmitted to the first and second drums via the differential device, and both of the first and second drums rotate by the same amount in a predetermined direction. The hung first and second wires also move by the same amount, the first and second slider bases rise by the same amount, and the window glass also rises while maintaining its inclination. When the upper portion of the window glass comes into contact with the window frame, the slider base on the contact side cannot be lifted, and the drum on the contact side cannot rotate.

Even if the drum on the contact side stops rotating, the rotation is transmitted to the drum on the non-contact side by the differential device.
The slider base on the non-contact side continues to rise. For this reason,
The window glass will rotate in a direction to correct the tilt. When only the slider base on the non-contact side continues to rise and the inclination of the windowpane is eliminated, the portion inclined downwardly of the windowpane initially comes into contact with the window frame, and the contact side and the non-contact side. Both drums cannot rotate. Thereby, the closing operation of the window glass ends.

When the motor is rotated in reverse to lower the window glass from the closed state, this rotation is transmitted to the first and second drums via the differential device, and both the first and second drums are moved in a predetermined direction. , The first and second wires wound around it also move by the same amount, the first and second slider bases descend by the same amount, and the window glass maintains a state of zero inclination, that is, a horizontal state. It descends while doing. Thereafter, the horizontal state of the window glass is maintained. As described above, in the present invention, once the window glass is raised to the top dead center, the window glass can be automatically adjusted to the horizontal position, and a special operation is performed to adjust the inclination of the window glass after assembly. No need.

According to the second and third aspects of the present invention, the configuration of the differential device is limited. According to the second aspect of the present invention, the differential device is meshed with a worm that is rotationally driven by a motor.
A worm wheel as a rotation input unit, a housing protruding in the axial direction of the worm wheel, a shaft supported by the housing so as to be orthogonal to a rotation center axis of the worm wheel, and a rotatable shaft. A first bevel gear which is supported and revolves around the rotation center axis of the worm wheel with the rotation of the worm wheel; and a first bevel gear which is arranged coaxially with the worm wheel and sandwiches the first bevel gear from the axial direction of the worm wheel. So the first
And a pair of bevel gears as first and second rotation output portions that mesh with the bevel gear.

According to the third aspect of the present invention, the differential device is a worm wheel as a rotation input portion that meshes with a worm that is rotationally driven by a motor, the worm wheel being provided around a rotation center axis of the worm wheel. A worm wheel in which a plurality of circular holes are arranged in a ring, a ball loosely fitted so that the outer surface protrudes from the circular hole of the worm wheel, and pressing in an axial direction of the worm wheel so as to sandwich the ball from both sides. And a pair of pressing plates as first and second rotation output units.

[0020]

(Embodiment 1) In this embodiment, a differential device is constituted by a differential bevel gear train, and a first embodiment will be described with reference to FIGS. Here, FIG. 1 is a diagram showing the overall schematic configuration of the present embodiment, FIG. 2 is a cross-sectional view showing the main configuration of the differential device and its peripheral parts in FIG. 1, and FIG. 3 is the differential device in FIG. And a front view showing a main configuration of a peripheral portion thereof,
FIG. 4 is a schematic exploded perspective view showing a main internal structure of the differential device in FIG.

First, referring to FIG.
Are arranged in parallel in the width direction of the window glass W and in the vertical direction of the window glass W, and are fixed to a door panel (not shown).

The upper pulley 2 is located near the upper end of the guides 21 and 22 (upper end or its vicinity).
3, 24 are provided. In addition, lower pulleys 25 and 26 are provided near the lower ends of the guides 21 and 22 (at the lower end or in the vicinity thereof), respectively.

The rotational force of the motor 27 capable of rotating forward and reverse is
It is adapted to be added to later-described drums 51 and 52 via a differential device 28. The differential device 28 is shown in FIGS.
As shown in FIG.
The worm wheel 30 meshes with the worm wheel 9 as a rotation input unit. A cylindrical housing 31 extending in the axial direction is coaxially protruded from the worm wheel 30, and three support portions 31 a to 31 c having an axial groove are formed on the inner peripheral surface of the housing 31. Is formed.

The cylindrical ring 32 is coaxially housed in the housing 31. On its outer peripheral surface, three radially arranged shafts 33 to 35 are implanted. Bevel gears 36 to 38 are rotatably inserted into 35. The tips of the shafts 33 to 35 are fitted in the grooves of the support portions 31 a to 31 c of the housing 31, so that the ring 32 and the shafts 33 to 35 rotate integrally with the worm wheel 30.
For this reason, the bevel gears 36 to 38 are
With the rotation of 0, the worm wheel 30 revolves around the rotation center axis.

The bevel gears 41 and 42 are arranged coaxially with the worm wheel 30 and mesh with the bevel gears 36 to 38 in the axial direction of the worm wheel 30 so as to sandwich the bevel gears 36 to 38. Further, on the outside of the bevel gear 42, an elastic washer 43 and a flat washer
4 are arranged so as to overlap with each other. The washer 43 is deformed substantially flat when mounted, and presses the bevel gear 42 toward the bevel gear 41 with elastic force generated by the deformation, and functions as a pressing member. By this pressing, both bevel gears 41,
A constant sliding resistance serving as a base for each load is applied to the reference numeral 42.

The bevel gears 41, 42 constitute a rotation output section of the differential device 28. The rotation of the bevel gears 41, 42 causes the connecting shafts 45, 46 having prismatic heads 45a, 46a to rotate. Via the drums 51 and 52. Therefore, the bevel gears 41 and 42 and the connecting shaft 4
Serrations are cut in the fitting portions 41a, 42a, 45b, and 46b with the fittings 5 and 46 in order to regulate relative rotation. On the other hand, the drums 51 and 52 are provided with rectangular holes 51a and 52a to be fitted with the prismatic heads 45a and 46a of the connecting shafts 45 and 46, respectively.

The differential device 28 is incorporated in a case 61 and covered with a cover 62. The rotational speed Na of the worm wheel 30,
Rotational speed Nb of bevel gear 41 (drum 51), bevel gear 4
2 (drum 52), Nb + Nc = 2
So that the relationship of Na holds, the drum 51 and the drum 5
2 will be driven to rotate. The drums 51 and 52
Grooves 51b and 52b are spirally cut around the outer circumference of the wire to wind wires 53 and 54 described later.

As shown in FIG. 1, the wire 53 is wound around the upper pulley 23 and the lower pulley 25, and is wound around the drum 51. The wire 54 is wound around the upper pulley 24 and the lower pulley 26, and is wound around the drum 52.

The slider base 55 that supports the lower front position of the window glass W is
The slider base 56, which is locked to the stretched portion between the lower pulley 25 and the lower end of the window glass W, is locked to the stretched portion between the upper pulley 24 and the lower pulley 26 of the wire 54. Naturally, the winding directions of the wires 53 and 54 around the drums 51 and 52 are selected so that the slider base 55 and the slider base 56 move up and down in the same direction.

Although not shown, a wire 53 between the upper pulley 23 and the drum 51 and a wire 53 between the lower pulley 25 and the drum 51
Are surrounded by an outer tube, and are configured so that the slider base 55 starts moving without delay with respect to the rotation of the drum 51. Similarly, the wires 54 between the upper pulley 24 and the drum 52 and the wires 54 between the lower pulley 26 and the drum 52 are also surrounded by the outer tube, and the slider base 56 starts moving without delay with respect to the rotation of the drum 52. ing.

Next, the operation of this embodiment will be described.
First, with the window glass W opened, the motor 27
Is rotated forward, since the loads on the bevel gears 41 and 42 are balanced, this rotation is
1 and 52, the drums 51 and 52 rotate in a predetermined direction, the wires 53 and 54 wound around the drums move, the slider bases 55 and 56 rise, and the window glass W also rises. . On the other hand, when the motor 27 rotates in the reverse direction, the slider bases 55 and 56 are lowered, and the window glass W is also lowered.

In this embodiment, at the time of assembly, the slider base 55 and the slider base 56 do not have the same height, and the window glass W supported front and back by the slider bases 55 and 56.
However, even if the window glass W is inclined with respect to the window frame, the window glass W can be automatically adjusted to the horizontal position by raising the window glass W to the top dead center once.

That is, with the window glass W open, the motor 27
, The rotation is transmitted to the worm wheel 30 via the worm 29, and the bevel gears 36 to 38 revolve around the central axis of the worm wheel 30. At this time,
If there is no restriction on the movement of window glass W, bevel gear 4
1, 42 are balanced, and bevel gears 36-38
Does not perform rotation (rotation) about the shafts 33 to 35. For this reason, the bevel gears 41 and 42 rotate in the same direction at the same speed, the drums 51 and 52 also rotate in the predetermined direction by the same amount, and the wire 5 wound around the drums 51 and 52 is rotated.
3, 54 also move by the same amount.

Therefore, the slider bases 55 and 56 rise by the same amount, and the window glass W also rises while maintaining its inclination. When the upwardly inclined portion of the window glass W comes into contact with the window frame, the slider base on the contact side (here, assumed to be the slider base 55) cannot be raised, and the drum 51 and the bevel gear 41 on the contact side. Cannot rotate.

Even if the drum 51 and the bevel gear 41 on the contact side stop rotating, the bevel gears 36 to 38 are connected to the shafts 33 to 3.
By rotating (rotating) around the motor 5, the motor 2
The rotation of 7 is transmitted only to the non-contact side drum 52, and only the non-contact side slider base 56 continues to rise. As a result, the window glass W rotates in a direction to correct the inclination.

When only the slider base 56 on the non-contact side is lifted, and the inclination of the window glass W is eliminated, the portion inclined at the lower side of the window glass W initially comes into contact with the window frame. The drums 51 and 52 on the contact side and the non-contact side cannot rotate. In this state, the closing operation of the window glass W ends.

From the closed state of the window glass W, the window glass W
When the motor 27 is rotated in the reverse direction to lower the rotation speed, the rotation is transmitted to the worm wheel 30 via the worm 29, and the bevel gears 36 to 38 revolve around the central axis of the worm wheel 30. At this time, since the movement of the window glass W is not restricted, the bevel gears 36 to 38
No rotation (rotation) around 3 to 35 is performed. Therefore, the bevel gears 41 and 42 rotate at the same speed in the same direction,
The drums 51 and 52 also rotate by the same amount in a predetermined direction, and the wires 53 and 54 wound around the drums also move by the same amount.

Accordingly, the slider bases 55 and 56 are lowered by the same amount, and the window glass W is lowered while maintaining the state where the inclination is corrected, that is, the horizontal state. Thereafter, the horizontal state of the window glass is maintained. As described above, in the present embodiment, the window glass W can be automatically adjusted to the horizontal position by raising the window glass W to the top dead center once, and the inclination of the window glass W is adjusted after the window regulator is assembled. You do not need to do any special work.

Further, in this embodiment, since a differential bevel gear train is used as a differential device, a window regulator which does not require a window glass inclination adjusting operation after assembly can be realized with a simple configuration.

In this embodiment, the worm wheel 30
The three bevel gears 36 to 3 revolve around the rotation center axis of the worm wheel 30 with the rotation of the worm wheel 30.
8 was used, but in principle one is sufficient. But,
If three bevel gears 36 to 38 are used, bevel gear 41,
42 does not tilt, and its rotation is stabilized.

(Embodiment 2) As a differential device, there is a differential device having a simple configuration other than the differential bevel gear train used in the first embodiment. The present embodiment uses a differential device different from that of the first embodiment, and the configuration other than the differential device is the same as that of the first embodiment. Therefore, only the differential device will be described with reference to FIG. Here, FIG. 5 is an exploded perspective view showing a main configuration of a differential device used in the second embodiment.

In FIG. 5, a worm wheel 71 constitutes a rotation input section, and meshes with a worm driven to rotate by a motor. A plurality of circular holes 71a are annularly arranged at regular intervals around the rotation center axis of the worm wheel 71.

The circular hole 71a of the worm wheel 71
, A ball 72 such as a steel ball is loosely fitted in a greased state so as to protrude from the outer surface of the worm wheel 71. Further, washers 73 and 74 are provided so as to sandwich the ball 72 from the axial direction of the worm wheel.
Are arranged with grease applied to both surfaces, and pressing plates 75 and 76 are arranged outside the washers 73 and 74.

The female screw portion 75a of the pressing plate 75 has
Bolt 77 is used for countersunk washer 78, ball bearing 79,
After penetrating through each through hole of the dish-shaped washer 80, the pressing plate 76, etc., it is screwed together. As a result, the plate-shaped washers 78 and 80 are elastically deformed, and the pressing plates 75 and 76 are pressed toward the ball 72 by an elastic force. Note that the ball bearing 79 includes a pressing plate 75 and a pressing plate 76.
This is to ensure relative rotation with the.

The adapter 81 is fitted on the pressing plate 76 and rotates integrally with the pressing plate 76.
A coupling shaft 82 that transmits the rotation of the pressing plate 76 to a drum (corresponding to the drum 52 of the first embodiment) is coupled to the adapter 81. A coupling shaft 83 for transmitting the rotation of the pressing plate 75 to a drum (corresponding to the drum 51 of the first embodiment) is connected to the lower surface side of the pressing plate 75 in FIG. The bolt 77 has a through hole at the center, into which the small diameter portion of the connection shaft 83 fits.

In this configuration, the rotation of the motor is transmitted to the worm wheel 71 via the worm and the ball 72
Revolves around the central axis of the worm wheel 71. At this time, if there is no restriction on the movement of the window glass W, the ball 72 does not rotate (rotate), and the pressing plates 75 and 76 rotate in the same direction at the same speed. On the other hand, when the rotation of one of the pressing plates 75 and 76 is restricted, the ball 72 starts rotating, and only the pressing plate without restriction is
It will keep spinning.

Also in this embodiment using this differential device, the window glass W can be automatically adjusted to the horizontal position by once raising the window glass W to the top dead center, and the tilt of the window glass W after assembling is achieved. No special work needs to be performed to adjust.

In this embodiment, since a differential device using a ball is used as the differential device, a window regulator that does not require the work of adjusting the inclination of the window glass after assembly can be realized with a simple configuration.

(Other Embodiments) In the above embodiments,
Although the worm and the worm wheel are used to transmit the rotation of the motor to the differential device, the present invention is not limited to this, and may be configured using a spur gear or the like.

[0050]

As described above, according to the first aspect of the present invention, the rotational force of the motor is transmitted to the two drums via the differential device, and the two wires are wound around each drum. Since the slider bases are respectively moved, the window glass can be automatically adjusted to the horizontal position by raising the window glass to the top dead center once.
Therefore, according to the present invention, no special operation needs to be performed to adjust the inclination of the window glass after assembly.

According to the second and third aspects of the present invention,
The structure of the differential device is simplified, and a window regulator that does not require the work of adjusting the inclination of the window glass after assembly can be realized with a simple structure.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall schematic configuration of a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a main configuration of a differential device and a peripheral portion thereof in FIG.

FIG. 3 is a front view showing a main configuration of a differential device and a peripheral portion thereof in FIG. 1;

FIG. 4 is a schematic exploded perspective view showing a main internal structure of the differential device in FIG. 1;

FIG. 5 is an exploded perspective view showing a main configuration of a differential device used in the second embodiment.

FIG. 6 is a diagram showing an overall schematic configuration of a conventional window regulator.

[Explanation of symbols]

 21, 22 Guide 23, 24 Upper pulley 25, 26 Lower pulley 27 Motor 28 Differential gear 29 Worm 30 Worm wheel (rotation input part) 31 Housing 33-35 Shaft 36-38 Bevel gear 41, 42 Bevel gear (rotation output part) 45 , 46 connecting shaft 51, 52 drum 53, 54 wire 55, 56 slider base 71 worm wheel (rotation input part) 72 ball 75, 76 pressing plate (rotation output part) 82, 83 connecting shaft W window glass

Claims (3)

[Claims] 1. A first and second guide which are spaced apart in a width direction of a windowpane and are arranged in parallel in a vertical direction of the windowpane, and are respectively disposed near upper ends of the first and second guides. First and second upper pulleys, first and second lower pulleys respectively disposed near the lower ends of the first and second guides, a motor capable of normal and reverse rotation, and rotational force from the motor at a rotation input unit. As a result, the first and second rotation output units are driven by the rotation speed N of the rotation input unit.
a, a differential device that rotates such that a relationship of Nb + Nc = 2Na is established among a rotational speed Nb of the first rotational output portion and a rotational speed Nc of the second rotational output portion; and a first rotational output of the differential device. A first drum connected to a second rotation output section of the differential device; a first drum connected to the first upper pulley and a first lower pulley; and a first drum wound around the first drum. The first wire and the second upper pulley and the second lower pulley, and a stretched portion between the second upper pulley and the second lower pulley is formed between the first upper pulley and the first lower pulley of the first wire. Ascending and descending in the same direction as the stretch part of
A second wire wound around the second drum and a window glass are supported, and the second wire is engaged with a stretched portion between the first upper pulley and the first lower pulley of the first wire, and is moved along the first guide. A first slider base for moving the windowpane up and down by moving the windowpane; supporting the windowpane; being locked by a tension portion between the second upper pulley and the second lower pulley in the second wire, along the second guide. A second slider base for moving the window glass up and down by moving the window glass. 2. The worm wheel as the rotation input portion, which meshes with a worm rotationally driven by the motor; a housing protruding in an axial direction of the worm wheel; and the worm wheel. A shaft supported by the housing so as to be orthogonal to the center axis of rotation of the worm wheel; a first shaft rotatably supported by the shaft and revolving around the center axis of rotation of the worm wheel as the worm wheel rotates. A pair of bevel gears, coaxially arranged with the worm wheel, meshing with the first bevel gear so as to sandwich the first bevel gear from the axial direction of the worm wheel, The window regulator according to claim 1, comprising a bevel gear. 3. The worm wheel as the rotation input portion, which meshes with a worm that is driven to rotate by the motor, wherein the differential device has a plurality of circular holes around a rotation center axis of the worm wheel. A worm wheel arranged in an annular shape, a ball loosely fitted so that an outer surface thereof projects into a circular hole of the worm wheel, and pressed in the axial direction of the worm wheel so as to sandwich the ball from both sides. The window regulator according to claim 1, comprising a pair of pressing plates as the first and second rotation output units.