JP3739966B2 - Window regulator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a window regulator that raises and lowers a window glass such as a vehicle door, and more particularly to a wire type window regulator that pulls and raises and lowers the window glass with a wire driven by a motor.
[0002]
[Prior art]
As a window regulator for raising and lowering a window glass of an automobile side door, there is one shown in FIG. In this figure, rail-shaped guides 1 and 2 are spaced apart in the width direction of the window glass W (front-rear direction of the vehicle) and arranged in parallel in the up-and-down direction of the window glass W, and a door panel (inner panel) (not shown). It is fixed to.
[0003]
Upper pulleys 3 and 4 are provided in the vicinity of the upper ends of the guides 1 and 2 (upper end portions or the vicinity thereof), respectively. Lower pulleys 5 and 6 are provided in the vicinity of the lower ends of the guides 1 and 2 (the lower end portion or the vicinity thereof), respectively.
[0004]
A driving unit 10 including a motor 7 capable of forward and reverse rotation and a drum 8 rotated and driven by the motor 7 is disposed between the guide 1 and the guide 2 and is fixed to a door panel (not shown). The wire 9 is hanged from the drum 8 to the lower pulley 5 and the upper pulley 3 on the guide 1 side, and then to the lower pulley 6 and the upper pulley 4 on the guide 2 side so as to return to the drum 8. It is hung around. The wire 9 is wound around the drum 8 for a plurality of turns.
[0005]
By this staking-like hanging, the stretched portion of the wire 9 between the upper pulley 3 and the lower pulley 5 moves up and down in the same direction as the stretched portion between the upper pulley 4 and the lower pulley 6.
[0006]
The slider base 11 supporting the lower end front position of the window glass W is locked to the stretched portion of the wire 9 between the upper pulley 3 and the lower pulley 5, and the slider base 12 supporting the lower end rear position of the window glass W is connected to the wire 9. In the stretched portion between the upper pulley 4 and the lower pulley 6.
[0007]
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. Become. On the other hand, when the motor 7 is reversed, the slider bases 11 and 12 are lowered, and the window glass W is also lowered.
[0008]
[Problems to be solved by the invention]
In the window regulator having the above-described configuration, at the time of assembly, the mounting position of the component parts varies (for example, the mounting position of the upper pulleys 3 and 4 and the lower pulleys 5 and 6 and the mounting position of the slider bases 11 and 12 and the wire 9 vary. Etc.), the slider base 11 and the slider base 12 do not have the same height, and the window glass W supported by the slider bases 11 and 12 at the front and rear is inclined with respect to the window frame (door sash etc.) Often unable to take the closed position.
[0009]
Therefore, it is necessary to adjust the window glass W to the horizontal position after assembly. In this adjustment operation, the window glass W is shifted relative to the slider bases 11 and 12 at the top dead center position of the slider bases 11 and 12, and the window glass W is moved to the normal closed position (horizontal position). After this movement, the window glass W is fixed to the slider bases 11 and 12.
[0010]
As described above, the conventional window regulator requires a window glass tilt adjustment work after assembly, which increases the number of assembly steps.
The present invention has been made to solve the above problems, and a first object is to provide a window regulator that does not require the window glass tilt adjustment work after assembly.
[0011]
A second object of the present invention is to provide a window regulator with a simple configuration that does not require the window glass tilt adjustment work after assembly.
[0012]
[Means for Solving the Problems]
This onset bright to solve the problems described above, first, a second guide, said first, upper end of the second guide arranged in parallel toward the direction of upward and downward movement of spaced and window glass in the widthwise direction of the window glass First and second upper pulleys arranged in the vicinity, first and second lower pulleys arranged near the lower ends of the first and second guides, a motor capable of forward and reverse rotation, and rotation by the motor By receiving the force at the rotation input unit, the first and second rotation output units are connected between the rotation number Na of the rotation input unit, the rotation number Nb of the first rotation output unit, and the rotation number Nc of the second rotation output unit. , Nb + Nc = 2Na, a differential that rotates to satisfy the relationship, a first drum connected to the first rotation output of the differential, and a second rotation output of the differential Hang on the second drum, the first upper pulley and the first lower pulley In addition, the first wire wound around the first drum, the second upper pulley and the second lower pulley, and the stretched portion between the second upper pulley and the second lower pulley are arranged in the first drum. A second wire wound around the second drum and a window glass so as to move up and down in the same direction as a stretched portion between the first upper pulley and the first lower pulley of the wire, and a window glass, A first slider base which is locked to a stretched portion between the first upper pulley and the first lower pulley and moves up and down by moving along the first guide, supports the window glass, and the second wire A second slider that is locked to a stretched portion between the second upper pulley and the second lower pulley in order to move the window glass up and down by moving along the second guide And over scan, further comprising a one in which the first feature.
[0013]
In the present invention, when the motor rotates in the forward direction, this rotation is transmitted to the first and second drums through the differential, and the first and second drums rotate in a predetermined direction and are wound around the first and second drums. The second wire moves, the first and second slider bases rise, and the window glass also rises. On the other hand, when the motor is reversed, the first and second slider bases are lowered and the window glass is also lowered.
[0014]
In this window regulator, at the time of assembly, the first slider base and the second slider base are not at the same height, and the window glass supported by the first and second slider bases is tilted with respect to the window frame. Even so, 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.
[0015]
That is, when the motor is rotated forward, this rotation is transmitted to the first and second drums via the differential, and both the first and second drums rotate in the same direction in the predetermined direction and are wound around this. The first and second wires are also moved by the same amount, the first and second slider bases are raised by the same amount, and the window glass is also raised while maintaining its inclination. When the portion inclined upward of the window glass contacts the window frame, the slider base on the contact side cannot be raised, and the drum on the contact side cannot be rotated.
[0016]
Even when the contact-side drum stops rotating, the differential device transmits the rotation to the non-contact-side drum, and the non-contact-side slider base continues to rise. For this reason, a window glass will rotate in the direction which corrects the inclination. When the slider base on the non-contact side continues to rise, and the tilt of the window glass disappears, the part tilted to the lower side of the window glass will contact the window frame at the beginning. Both drums cannot be rotated. Thereby, the closing operation of the window glass ends.
[0017]
When the motor is rotated in reverse to lower the window glass from this closed state, this rotation is transmitted to the first and second drums via the differential, and both the first and second drums are the same in the predetermined direction. The first and second wires that have been rotated and moved are moved by the same amount, and the first and second slider bases are lowered by the same amount, while the window glass is maintained in a zero tilt state, that is, in a horizontal state. Descend. Thereafter, the horizontal state of the window glass is maintained. Thus, 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. There is no need.
[0019]
Further, according to 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, and a plurality of circular holes are annularly formed around the rotation center axis of the worm wheel. A first worm wheel, a worm wheel, a ball loosely fitted in a circular hole of the worm wheel so that an outer surface protrudes, and first and first pressed in the axial direction of the worm wheel so as to sandwich the ball from both sides A second feature is that it is composed of a pair of pressing plates as a two-rotation output section.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
(Example 1)
The present embodiment is an embodiment of the invention that is not described in the scope of claims, and the differential device is constituted by a differential bevel gear train . A first embodiment will be described with reference to FIGS. 1 is a diagram showing an overall schematic configuration of the present embodiment, FIG. 2 is a cross-sectional view showing the main configuration of the differential device in FIG. 1 and its peripheral portion, and FIG. 3 is a differential device in FIG. FIG. 4 is a schematic exploded perspective view showing the main internal structure of the differential device in FIG. 1.
[0021]
First, in FIG. 1, the guides 21 and 22 are spaced apart in the width direction of the window glass W and arranged in parallel in the ascending / descending direction of the window glass W, and are fixed to a door panel (not shown).
[0022]
Upper pulleys 23 and 24 are provided in the vicinity of the upper ends of the guides 21 and 22 (upper end portions or the vicinity thereof), respectively. Lower pulleys 25 and 26 are provided in the vicinity of the lower ends of the guides 21 and 22 (the lower end portion or the vicinity thereof), respectively.
[0023]
The rotational force of the motor 27 capable of forward / reverse rotation is applied to drums 51 and 52 described later via the differential device 28. As shown in FIGS. 2 to 4, the differential device 28 includes a worm wheel 30 that meshes with a worm 29 that is rotationally driven by a motor 27 as a rotation input unit. The worm wheel 30 is provided with a cylindrical housing 31 extending in the axial direction in a coaxial manner, and three support portions 31 a to 31 c having axial grooves are formed on the inner peripheral surface of the housing 31. Is formed.
[0024]
The cylindrical ring 32 is coaxially accommodated in the housing 31, and three shafts 33 to 35 arranged radially are implanted on the outer peripheral surface thereof. The bevel gears 36 to 38 are loosely inserted so as to be rotatable. The distal ends 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. Therefore, the bevel gears 36 to 38 revolve around the rotation center axis of the worm wheel 30 as the worm wheel 30 rotates.
[0025]
The bevel gears 41 and 42 are arranged coaxially with the worm wheel 30 and mesh with the bevel gears 36 to 38 from the axial direction of the worm wheel 30 so as to sandwich the bevel gears 36 to 38. Further, an elastic washer 43 and a flat washer 44 are disposed on the outside of the bevel gear 42 so as to overlap each other. The washer 43 is deformed substantially flat when mounted, and presses the bevel gear 42 toward the bevel gear 41 with an elastic force generated by the deformation, and functions as a pressing member. By this pressing, the bevel gears 41 and 42 are given a certain sliding resistance as a base for the respective loads.
[0026]
The bevel gears 41 and 42 constitute a rotation output portion of the differential device 28, and the rotation of the bevel gears 41 and 42 is performed via connecting shafts 45 and 46 having prismatic head portions 45a and 46a. It is transmitted to the drums 51 and 52. For this reason, serrations are cut in the fitting portions 41a, 42a, 45b, 46b between the bevel gears 41, 42 and the connecting shafts 45, 46 in order to restrict relative rotation. On the other hand, the drums 51 and 52 are provided with rectangular holes 51a and 52a that fit into the prismatic head portions 45a and 46a of the connecting shafts 45 and 46, respectively.
[0027]
The differential device 28 is incorporated in a case 61 and covered with a cover 62. By this differential device 28, there is a relationship of Nb + Nc = 2Na among the rotational speed Na of the worm wheel 30, the rotational speed Nb of the bevel gear 41 (drum 51), and the rotational speed Nc of the bevel gear 42 (drum 52). In order to hold, the drum 51 and the drum 52 are rotationally driven. Note that grooves 51b and 52b are spirally cut around the outer circumferences of the drums 51 and 52 in order to wind wires 53 and 54, which will be described later.
[0028]
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. Further, the wire 54 is wound around the upper pulley 24 and the lower pulley 26 and is also wound around the drum 52.
[0029]
The slider base 55 supporting the lower end front position of the window glass W is locked to the stretched portion of the wire 53 between the upper pulley 23 and the lower pulley 25, and the slider base 56 supporting the lower end rear position of the window glass W is the wire 54. In the stretched portion between the upper pulley 24 and the lower pulley 26. Naturally, the winding direction of the wires 53 and 54 around the drums 51 and 52 is selected so that the slider base 55 and the slider base 56 move up and down in the same direction.
[0030]
Although not shown, the wires 53 between the upper pulley 23 and the drum 51 and between the lower pulley 25 and the drum 51 are surrounded by an outer tube, and the slider base 55 starts moving without delay with respect to the rotation of the drum 51. Has been. Similarly, the wires 54 between the upper pulley 24 and the drum 52 and between the lower pulley 26 and the drum 52 are also surrounded by the outer tube, and the slider base 56 is configured to start moving without delay with respect to the rotation of the drum 52. ing.
[0031]
Next, the operation of this embodiment will be described. First, when the motor 27 is rotated forward with the window glass W being opened, the loads of the bevel gears 41 and 42 are balanced, so this rotation is transmitted to the drums 51 and 52 via the differential device 28. The drums 51 and 52 rotate in a predetermined direction, the wires 53 and 54 wound around the drums 51 and 52 move, the slider bases 55 and 56 rise, and the window glass W also rises. On the other hand, when the motor 27 is reversed, the slider bases 55 and 56 are lowered, and the window glass W is also lowered.
[0032]
In this embodiment, even if the slider base 55 and the slider base 56 are not at the same height during assembly, the window glass W supported by the slider bases 55 and 56 at the front and rear is inclined with respect to the window frame. Once the window glass W is raised to the top dead center, the window glass W can be automatically adjusted to the horizontal position.
[0033]
That is, when the motor 27 is rotated forward in the open state of the window glass W, this 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 the window glass W, the loads of the bevel gears 41 and 42 are balanced, and the bevel gears 36 to 38 rotate (rotate) around the shafts 33 to 35. Absent. Therefore, the bevel gears 41 and 42 rotate in the same direction at the same speed, the drums 51 and 52 rotate in the predetermined direction by the same amount, and the wires 53 and 54 wound around the drums 51 and 52 move by the same amount.
[0034]
Therefore, the slider bases 55 and 56 are raised by the same amount, and the window glass W is also raised while maintaining the inclination. When a portion inclined upward of the window glass W comes into contact with the window frame, the slider base on the contact side (herein, it is assumed that the slider base 55) cannot be raised, and the drum 51 and the bevel gear 41 on the contact side are not raised. Can no longer rotate.
[0035]
Even if the contact-side drum 51 and the bevel gear 41 stop rotating, the bevel gears 36 to 38 rotate (rotate) around the shafts 33 to 35, so that the rotation of the motor 27 is caused by the non-contact-side drum. Only the slider base 56 on the non-contact side continues to rise. As a result, the window glass W rotates in a direction to correct the inclination.
[0036]
When only the non-contact side slider base 56 is raised, when the inclination of the window glass W disappears, the portion inclined downward on the window glass W initially comes into contact with the window frame. Both drums 51 and 52 on the non-contact side cannot be rotated. In this state, the closing operation of the window glass W ends.
[0037]
When the motor 27 is reversely rotated to lower the window glass W from the closed state of the window glass W, this rotation is transmitted to the worm wheel 30 via the worm 29, and the bevel gears 36 to 38 are center axes of the worm wheel 30. Revolve around. At this time, since the movement of the window glass W is not regulated, the bevel gears 36 to 38 do not rotate (rotate) around 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 rotate in the predetermined direction by the same amount, and the wires 53 and 54 wound on the drums 51 and 52 move by the same amount.
[0038]
Therefore, the slider bases 55 and 56 are lowered by the same amount, and the window glass W is lowered while the inclination is corrected, that is, the horizontal state is maintained. Thereafter, the horizontal state of the window glass is maintained. As described above, in this embodiment, the window glass W can be automatically adjusted to the horizontal position once by raising the window glass W to the top dead center, and the inclination of the window glass W is adjusted after the window regulator is assembled. Therefore, no special work is required.
[0039]
Further, in the present embodiment, since the differential bevel gear train is used as the differential device, a window regulator that does not require the window glass tilt adjustment work after assembly can be realized with a simple configuration.
[0040]
In this embodiment, the three bevel gears 36 to 38 are used as bevel gears that revolve around the rotation center axis of the worm wheel 30 as the worm wheel 30 rotates. If there is enough. However, if the three bevel gears 36 to 38 are used, the bevel gears 41 and 42 are not inclined, and the rotation is stabilized.
[0041]
(Example 2)
As the differential device, there is one having a simple configuration other than the differential bevel gear train used in the first embodiment. This embodiment uses a differential device different from 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 the main configuration of the differential used in the second embodiment.
[0042]
In FIG. 5, a worm wheel 71 constitutes a rotation input unit and meshes with a worm that is rotationally driven by a motor. Around the rotation center axis of the worm wheel 71, a plurality of circular holes 71a are annularly arranged at regular intervals.
[0043]
In 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 arranged in a state where grease is applied to both surfaces so as to sandwich the ball 72 from the axial direction of the worm wheel, and press plates 75 and 76 are arranged outside the washers 73 and 74. ing.
[0044]
Bolts 77 are screwed into the female screw portions 75a of the pressing plate 75 after passing through the insertion holes of the countersunk washer 78, the ball bearing 79, the countersunk washer 80, the pressing plate 76, and the like. 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. The ball bearing 79 is for ensuring relative rotation between the pressing plate 75 and the pressing plate 76.
[0045]
The adapter 81 is fitted to the pressing plate 76 and rotates integrally with the pressing plate 76. The rotation of the pressing plate 76 is transmitted to the drum 81 (corresponding to the drum 52 of the first embodiment). The connecting shaft 82 is coupled. Further, a connecting shaft 83 for transmitting the rotation of the pressing plate 75 to the drum (corresponding to the drum 51 of the first embodiment) is coupled to the lower surface side of the pressing plate 75 in FIG. The bolt 77 has a through hole at its center, and a small diameter portion of the connecting shaft 83 is fitted therein.
[0046]
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 (spin), and the pressing plates 75 and 76 rotate in the same direction at the same speed. On the other hand, when one of the pressing plates 75 and 76 is restricted from rotating, the ball 72 starts to rotate, and only the unregulated pressing plate continues to rotate.
[0047]
Even in this embodiment using this differential, once the window glass W is raised to the top dead center, the window glass W can be automatically adjusted to the horizontal position, and the inclination of the window glass W can be adjusted after assembly. There is no need for special work.
[0048]
Further, in the present embodiment, since a differential device using balls is used as the differential device, a window regulator that does not require the window glass tilt adjustment work after assembly can be realized with a simple configuration.
[0049]
(Examples other than the above)
In each of the above embodiments, the worm and the worm wheel are used to transmit the rotation of the motor to the differential device. However, the present invention is not limited to this, and can be configured using a spur gear or the like.
[0050]
【The invention's effect】
As described above, in the present invention, the rotational force of the motor is transmitted to the two drums via the differential device, and the two slider bases are moved by the wires wound around the drums, respectively. Therefore, once the window glass is raised to the top dead center, the window glass can be automatically adjusted to the horizontal position. Therefore, according to the present invention, it is not necessary to perform a special operation in order to adjust the inclination of the window glass after assembly.
[0051]
Further, according to the present invention, the configuration of the differential device is simplified, and a window regulator that does not require the window glass tilt adjustment work after assembly can be realized with a simple configuration.
[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 showing a main configuration of the differential device and its peripheral portion in FIG. 1;
3 is a front view showing a main configuration of the differential device and its peripheral portion in FIG. 1. FIG.
4 is a schematic exploded perspective view showing a main internal structure of the differential device in FIG. 1. FIG.
FIG. 5 is an exploded perspective view showing a main configuration of a differential device used in a second embodiment.
FIG. 6 is a diagram showing an overall schematic configuration of a conventional window regulator.
[Explanation of symbols]
21 and 22 Guides 23 and 24 Upper pulley 25 and 26 Lower pulley 27 Motor 28 Differential device 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 Connection shaft 51, 52 Drum 53, 54 Wire 55, 56 Slider base 71 Worm wheel (rotation input part)
72 Ball 75, 76 Press plate (rotation output part)
82,83 Connecting shaft W Window glass

Claims (1)

First and second guides spaced apart in the width direction of the window glass and arranged in parallel in the direction of raising and lowering the window glass;
First and second upper pulleys disposed in the vicinity of the upper ends of the first and second guides,
First and second lower pulleys respectively disposed near lower ends of the first and second guides;
A motor capable of forward and reverse rotation,
By receiving the rotational force from the motor at the rotation input unit, the first and second rotation output units have the rotation number Na of the rotation input unit, the rotation number Nb of the first rotation output unit, and the rotation number of the second rotation output unit. A differential that rotates so that a relationship of Nb + Nc = 2Na is established between Nc;
A first drum coupled to a first rotation output of the differential;
A second drum coupled to a second rotation output of the differential;
A first wire that is wound around the first upper pulley and the first lower pulley and wound around the first drum;
The stretched portion between the second upper pulley and the second lower pulley is stretched between the second upper pulley and the second lower pulley, and the stretched portion between the first upper pulley and the first lower pulley of the first wire has the same direction as the stretched portion between the first upper pulley and the first lower pulley. A second wire wound around the second drum so as to move up and down
A first slider base that supports the window glass and is engaged with a stretched portion between the first upper pulley and the first lower pulley of the first wire and moves up and down by moving along the first guide; ,
A second slider base that supports the window glass and is locked to a stretched portion of the second wire between the second upper pulley and the second lower pulley, and moves up and down by moving along the second guide; ,
A window regulator comprising :
The differential is
A worm wheel as the rotation input unit that meshes with a worm that is rotationally driven by the motor, and a worm wheel having a plurality of circular holes arranged around the rotation center axis of the worm wheel,
A ball loosely fitted so that the outer surface protrudes into the circular hole of the worm wheel;
A pair of pressing plates as the first and second rotation output portions, which are pressed in the axial direction of the worm wheel so as to sandwich the ball from both sides;
A window regulator characterized by comprising:

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