JP2001001755A - Door glass lifting and lowering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door glass lifting and lowering device with a stopper mechanism for stopping door glass efficiently. SOLUTION: This door glass lifting and lowering device has a cord 50 for lifting and lowering a slide glass body 62. The cord 50 runs between a plurality of pulleys. Among these pulleys, pulleys 42, 43 located at a lower side are rotatably fixed to respective frame members 36, 27 by means of a pulley axle 82. A rubber stopper 84 is provided on the pulley axle 82. When the slide glass body 62 is lowered to a lower end, a bottom end face of the slide glass body 62 abuts against the rubber stopper 84.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door glass elevating device provided on a door of an automobile or the like.

[0002]

2. Description of the Related Art Generally, a door of an automobile is provided with a door glass elevating device (window regulator) for elevating the door glass. For example, as in a conventional example described in JP-A-10-102902, a door glass is slidably supported by front and rear sashes, and a carrier plate is locked to a pair of front and rear wire rope moving portions, respectively. A window regulator has been proposed in which the front and rear portions of a door glass are supported by a carrier plate.

[0003] In a device such as the above-mentioned door glass elevating device, which drives the door glass up and down by a cable such as a wire rope, a stopper member is required to regulate the position of the lower end (bottom dead center) of the door glass. And Conventionally, it has been considered to provide this stopper member at the lower end of the sash, or to provide it on a lower panel or the like that connects the lower ends of the front and rear sashes.

[0004]

In the case where the rope is moved up and down by a driving pulley rotated by a motor such as a power window, the motor will continue to rotate to some extent even after the door glass reaches the rising end or the falling end. As a result, the torque increases and the supply current increases, so that the supply current to the motor is cut off.

Therefore, when the door glass reaches the lowering end, the door glass tries to push down the stopper member, while the cable body tries to pull up the pulley. For this reason, the longer the distance between the stopper member and the pulley, that is, the longer the force transmission path, the greater the moment generated between them. That is, a large bending stress acts on the force transmission path, and deformation or breakage may occur if the rigidity of the members constituting the force transmission path is low. For this reason, reinforcement measures and the like for increasing rigidity are required.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a door glass lifting / lowering apparatus capable of efficiently suppressing the movement of the door glass by shortening the transmission path of the force for receiving the door glass.

[0007]

According to a first aspect of the present invention, there is provided a door glass elevating / lowering apparatus, wherein when a door glass reaches a bottom dead center, a glass elevating body is provided on a stopper rubber provided on a pulley shaft. It abuts and stops while compressing the stopper rubber. At this time, the glass elevating body is supported by the pulley shaft via the stopper rubber. That is, since the transmission path of the force for receiving the glass elevating body is substantially only the pulley shaft, the transmission path of the force is extremely short. Then, the force in the direction of pushing down the stopper rubber and the force in the direction of pulling up the pulley, that is, the force for driving the rope upward, are offset via the pulley shaft, and the glass elevating body is securely stopped. Become.

The stopper rubber according to the present invention is a concept including not only synthetic rubber but also synthetic resin elastomer and elastic members such as springs. In short, the stopper rubber may be of any type as long as it can elastically receive the glass elevating body, and its material and shape are not limited.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a door glass elevating device according to an embodiment of the present invention will be described with reference to the drawings. The vehicle door 10 shown in FIG. 4 includes a door module 12 incorporated in a door panel unit 11 mainly including an outer panel. The front part of the door 10 is a hinge member 13
Is fitted to the vehicle body.

The door module 12 has a frame structure 20 forming a skeleton thereof. The frame structure 20 includes a front sash 21 located on the vehicle front side, a rear sash 22 located on the vehicle rear side, an upper sash 23 located on the uppermost portion of the door module 12, and a horizontal position located below the upper sash 23. It comprises an intermediate frame 24 extending in the direction, a lower frame 25 located at the lowermost part of the door module 12, and the like. Upper sash 23
Has a shape along the upper edge 60a of the door glass 60 described later. Door frame elevating device 30 on frame structure 20,
A door latch mechanism 31 and the like are attached.

The door glass raising and lowering device 30 includes a base plate 35 disposed between the intermediate frame 24 and the lower frame 25, and a pair of front and rear frame members 36, 37 fixed to the base plate 35 and extending in the vertical direction. ing. The lower end of each of the frame members 36 and 37 is
It is fixed to.

As shown in FIG.
Upper and lower pulleys 40 and 41 and lower pulleys 42 and 43 are provided at the upper end and the lower end of 7 respectively. Lower pulley 42,
43 constitutes pulley units 80 and 81 each having a down stopper function according to the present invention. Details of the pulley units 80 and 81 will be described later. The base plate 35 is provided with a driving pulley 44 (wire drum) and a motor 45 for rotating the driving pulley 44. The motor 45 has a reduction gear D that can be rotated forward and backward by using a vehicle-mounted battery (not shown) as a power source.
C motor.

A single cord 50 made of a wire rope or the like is routed on the pulleys 40 to 44 in a state of crossing in an X shape. That is, the cable body 50 is vertically moved between the front pulley 40 and the lower pulley 42 between the front upper pulley 40 and the lower pulley 42, and between the rear upper pulley 41 and the lower pulley 43 in the vertical direction. Rear moving part 5 stretched
0b, a first inclined portion 50c extending obliquely between the upper pulley 41 and the drive pulley 44, and a second oblique portion extending obliquely between the lower pulley 42 and the drive pulley 44. It has a shape portion 50d and a third slope portion 50e that extends diagonally between the upper pulley 40 and the lower pulley 43.

The first and second inclined portions 50c and 50d and the third inclined portion 50e cross in an X shape. A carrier plate 61 functioning as a glass support member for supporting the door glass 60 is fixed to a vertically intermediate portion of each of the front moving portion 50a and the rear moving portion 50b. The door glass 60 and the carrier plate 61 constitute a glass elevating body 62 according to the present invention.

One end of the cable body 50, that is, the end of the first inclined portion 50c is locked by the drive pulley 44, and the drive pulley 44 has a length that allows the up / down stroke of the door glass 60. It is wound up. The other end of the cord body 50,
That is, the end of the second inclined portion 50 d is also locked by the drive pulley 44, and the drive glass 44 is wound around the drive pulley 44 by a length that allows the up-and-down stroke of the door glass 60.

Therefore, when the driving pulley 44 rotates in the counterclockwise direction in FIG. 5, the first inclined portion 50c of the cord 50 is extended from the driving pulley 44, and the second inclined portion 50d is driven. The carrier plate 61 and the door glass 60 are integrally lowered by being taken up by the pulley 44 and by the front and rear moving parts 50a and 50b being lowered in synchronization with each other.

When the driving pulley 44 rotates clockwise, the first inclined portion 50c is wound around the driving pulley 44, and the second inclined portion 50d is rotated by the driving pulley 44d.
When the front and rear moving parts 50a and 50b rise in synchronization with each other, the carrier plate 61 and the door glass 60 rise integrally. And door glass 60
When the upper edge 60a contacts the upper sash 23, the rising of the door glass 60 stops.

When the motor 45 stops when the door glass 60 reaches the rising edge or the falling edge, the torque increases, and the current supplied to the motor 45 becomes excessive.
In this embodiment, the control circuit detects that the supply current to the motor 45 has become excessive,
The current to cut off.

After the door glass 60 reaches the lower end, the motor 45 tries to continue rotating to some extent, so that the driving pulley 44 is slackened on the feeding side. In order to absorb the slack, a tension mechanism 65 having a tension pulley or the like is provided on the first inclined portion 50c. When the door glass 60 reaches the upper and lower ends, the motor 4
The drive pulley 4
4 will be loosened on the feeding side. In order to absorb the slack, a tension mechanism 66 having a tension pulley or the like is also provided on the second inclined portion 50d.

The carrier plate 61 extends in the front-rear direction along the lower end portion 60b of the door glass 60, and is used to fix the front and rear moving portions 50a and 50b of the cable body 50 at two front and rear portions of the carrier plate 61. Stop portions 70 and 71 are provided. Both ends of the carrier plate 61 are fixed to the door glass 60 by fixing members 72 such as screws. A glass support portion 73 and an auxiliary support portion 74 are provided at a longitudinally intermediate portion of the carrier plate 61. Lightening holes 75 (shown in FIG. 3) punched out by a press to reduce the weight are formed at appropriate positions of the carrier plate 61.

As shown in FIG. 4, the front edge portion 60c of the door glass 60 is attached to the weather strip 7 provided on the front sash 21.
6 slidably in the vertical direction. Door glass 60
The rear edge portion 60d is in contact with the weather strip 77 provided on the rear sash 22 in a vertically slidable manner. That is, when the carrier plate 61 is moved up and down, the door glass 60 moves up and down while being kept in close contact with the weather strips 76 and 77 while being guided by the pair of front and rear sashes 21 and 22. Become.

Pulley units 80 and 81 including the pulleys 42 and 43 are provided below the door glass lifting device 30. These pulley units 80 and 81 are shown in FIG.
As shown in FIG.
Pulley shafts 82 respectively fixed to the
Pulleys 42 and 43 rotatably mounted on the
2 and a stopper rubber 84 held by the stopper bracket 83
And a guide member 85 for guiding the winding of the cable body 50 and the like. The stopper bracket 83 is formed in a shape to wrap the lower side of the stopper rubber 84. The upper surface 84a of the stopper rubber 84 in the illustrated example is, for example, corrugated, but a stopper rubber having a circular shape or any other appropriate shape may be employed.

The stopper rubber 84 is provided on the carrier plate 6.
When the door glass 60 is lowered to a predetermined position, that is, near the lower end, the lower end surface 61 a of the carrier plate 61, that is, the lower end surface of the glass elevating body 62 is the upper surface of the stopper rubber 84. 84a
To come into contact with.

Next, the operation of the door glass lifting / lowering device 30 including the pulley units 80 and 81 will be described.
In FIG. 5, when the driving pulley 44 is rotated in the counterclockwise direction by the motor 45, the first slanted portion 50c of the cable body 50 is extended from the driving pulley 44 and
The inclined portion 50d is wound around the drive pulley 44, and the front and rear moving portions 50a and 50b descend in synchronization with each other, so that the glass elevating body 62 descends.

The lower end surface 61 of the carrier plate 61
a comes into contact with the upper surface 84a of the stopper rubber 84, and while the stopper rubber 84 is compressed, the lower end surface 61a of the carrier plate 61 is lowered to near the position indicated by the symbol H in FIG. At this point, the deformation of the stopper rubber 84 reaches the limit, the glass lifting / lowering body 62 stops, and the current supplied to the motor 45 exceeds a predetermined value with the increase in the torque of the motor 45. Leaning drive pulley 44
Stops rotating.

When the glass lifting / lowering body 62 is stopped by the stopper rubber 84 in this manner, the force by which the glass lifting / lowering body 62 pushes down the stopper rubber 84 and the rope 50 attempts to pull up the pulleys 42 and 43. The force is offset via the pulley shaft 82. Here, the transmission path of the force from the stopper rubber 84 to the pulleys 42 and 43 is substantially only the pulley shaft 82, and the transmission path of the force is extremely short.
A bending moment that causes a problem does not occur, and the glass elevating body 62 can be reliably stopped at its bottom dead center, and the possibility of deformation or breakage can be avoided.

Further, since the bracket 83 holding the stopper rubber 84 is mounted on the pulley shaft 82, the bracket 83 can be mounted so as to be able to rotate about the pulley shaft 82 to some extent. In this case, when the lower end surface 61a of the carrier plate 61 comes into contact with the stopper rubber 84, the stopper rubber 84 is moved so that the upper surface 84a of the stopper rubber 84 fits into the lower end surface 61a of the carrier plate 61. , And the contact between the stopper rubber 84 and the glass elevating body 62 is further improved.

When the driving pulley 44 rotates clockwise, the first inclined portion 50c is wound around the driving pulley 44, and the second inclined portion 50d is rotated by the driving pulley 44d.
And the front and rear moving parts 50a and 50b rise in synchronization with each other, whereby the glass elevating body 62 rises. Then, the upper edge 60a of the door glass 60 comes into contact with the upper sash 23, whereby the rising of the door glass 60 is stopped. Also in this case, when the torque of the motor 45 increases and the current supplied to the motor 45 exceeds a predetermined value, the current is cut off and the rotation of the drive pulley 44 stops.

In practicing the present invention, the lower end surface of the door glass may directly contact the stopper rubber. In addition, it goes without saying that each element constituting the present invention, such as a frame member, a glass elevating body, a cable body, a pulley shaft, a stopper rubber, and the like constituting the door glass elevating device can be appropriately modified and implemented.

[0030]

According to the door glass elevating device according to the first aspect, when the glass elevating body descends to the bottom dead center by the cords wound around the pulley, the glass elevating body is stopped by the stopper rubber. You. Since the stopper rubber is attached to the pulley shaft, the transmission path of the force for receiving the glass elevating body is short, the movement of the glass elevating body can be stopped efficiently, and the possibility of causing deformation or breakage is suppressed. . Since the stopper rubber is attached using the pulley shaft, it is not necessary to separately secure a member for supporting the stopper rubber or a position where the stopper rubber is provided, which can contribute to simplification of the configuration.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a part of a pulley unit and a glass elevating body according to an embodiment of the present invention.

FIG. 2 is a front view of the pulley unit shown in FIG.

FIG. 3 is a front view of the pulley unit shown in FIG. 1 in which a glass elevating body is in contact with a stopper rubber.

FIG. 4 is a side view of a vehicle door having the pulley unit shown in FIG.

FIG. 5 is an enlarged side view showing a part of the vehicle door shown in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Door 21,22 ... Sash 30 ... Door glass raising / lowering device 36,37 ... Frame member 40,41,42,43,44 ... Pulley 50 ... Rope 60 ... Door glass 61 ... Carrier plate 62 ... Glass raising / lowering body 80 81 pulley unit 82 pulley shaft 84 stopper rubber

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toshiaki Uchigata 5-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation (72) Inventor Koji Ishii 2-64 Nakade-cho, Atsuta-ku, Nagoya-shi, Aichi Prefecture F-term (reference) in Ansei Co., Ltd. 3D127 AA17 CB05 DF04 DF09 DF24 DF26 EE16 GG05

Claims (1)

[Claims] 1. A glass elevating body that moves up and down along a sash provided before and after a door, and is wired between a plurality of pulleys connected to the glass elevating body and provided on a frame member of the door. A cord for driving the glass elevating body; a pulley shaft rotatably supporting the pulley; and a lower end surface of the glass elevating body attached to the pulley shaft and lowering when the glass elevating body descends to a predetermined position. A door glass raising / lowering device, comprising: a stopper rubber that abuts;