JP2002070416A - Window regulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a window regulator, in which a motor section is miniaturized and lightened and the cost of which can be reduced and in which the constitution of a slider base section can also be simplified comparatively and even wire length is not so lengthened in the wire type window regulator lifting and lowering a window glass such as a door for a car. SOLUTION: A running block 11 is supported rotatably to a slider base 6, a large-diameter drum section 9a and a small-diameter drum section 9b having the outside diameter of the half of the diameter of the drum section 9a are formed to a drum 9 as a drum section for winding a wire, the direction of a section delivered from the drum section 9a in the wire 12 is changed downwards by a fixed block 3 on the upper side, the section delivered from the drum section 9a is wrapped onto the running block 11 and the direction of the section is changed upwards, and the tip of the wire is engaged at the upper end section of a guide 1 while the direction of a section delivered from the small-diameter drum section 9b in the wire 13 is changed upwards by a fixed block 4 on the lower side, and the front end of the section delivered from the drum section 9b is engaged with the slider base 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire type window regulator, and more particularly, to a guide arranged such that a longitudinal direction thereof coincides with a vertical direction of glass, a motor rotatable in both forward and reverse directions, and A drum that is driven to rotate by the motor, a slider base that moves up and down while being guided by the guide, and is fixed to the glass; an upper constant pulley located at the upper end of the guide; and a lower pulley located at the lower end of the guide. A constant pulley and a wire wound around the drum and wrapped around the upper constant pulley and the lower constant pulley, and having a wire that pulls the slider base. The present invention relates to a window regulator for moving a slider base in a longitudinal direction of a guide and moving glass up and down.

[0002]

2. Description of the Related Art Window regulators of this type are classified into the following two types according to the type of wire winding. One end of the wire fed from the drum is turned downward by the upper fixed pulley, then locked to the slider base, and the other end of the wire is similarly turned upward by the lower fixed pulley. And then locked to the slider base. A movable pulley is rotatably supported on the upper and lower portions of the slider base, and one end of the wire fed from the drum is turned downward by the upper fixed pulley, and then wrapped around the upper movable portion of the slider base. The upper end of the guide locks its tip, and the other end of the wire is similarly turned upward by the lower fixed pulley, and then wound around the moving pulley below the slider base. The guide is turned downward, and the leading end is locked at the lower end of the guide (for example, Japanese Patent Laid-Open No. 6-16716).
No. 6).

[0003]

When the same drum is used, the output of a motor (including a gear box) required for raising and lowering the glass is one half of that of the winding system. become. As a result, a low-power motor can be used as the drive source, so the size and weight of the motor can be reduced, the cost can be reduced, and the cabin space can be expanded by making the door thinner. is there.

On the other hand, in the winding method, it is necessary to provide moving pulleys on the upper and lower portions of the slider base, and the wire length becomes enormous. However, there is a disadvantage that the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the size and weight of the motor portion and to reduce the cost, and to make the configuration of the slider base portion relatively simple. An object of the present invention is to realize a window regulator that can be made and the wire length is not so long.

[0006]

According to a first aspect of the present invention, there is provided a guide arranged so that a longitudinal direction thereof coincides with a vertical direction of glass, a motor rotatable in both forward and reverse directions, A drum rotationally driven by the motor;
A slider base which is guided by the guide, moves up and down and is fixed to the glass, an upper constant pulley located at an upper end of the guide, a lower constant pulley located at a lower end of the guide, and the drum And a wire that is wound around the upper constant pulley and the lower constant pulley, and that pulls the slider base. In the window regulator for moving the slider base in the longitudinal direction of the guide and raising and lowering the glass, a moving pulley is rotatably supported on the slider base, and the wire is wound on the drum for winding the wire. As the trunk, a large-diameter trunk and a small-diameter trunk having an outer diameter of 1/2 with respect to the large-diameter trunk are formed. The extended portion is deflected downward by the upper fixed pulley, and further wrapped around the moving pulley and deflected upward, and then its tip is locked to the upper end side of the guide, A portion of the wire protruded from the small-diameter trunk portion of the drum is turned upward by the lower constant pulley, and a tip of the portion is locked to the slider base. It is.

[0007] When the glass is raised, a much larger force is required than when the glass is lowered. In the present invention, the output of the motor required for raising the glass is halved compared to the above-described winding method. As a result, a low-power motor can be used as the driving source, and the size and weight of the motor can be reduced, and the cost can be reduced.

Further, since only the movable pulley for raising the glass is provided on the slider base, the configuration of the slider base can be simplified and the wire length can be shortened as compared with the above-mentioned winding method.

According to a second aspect of the present invention, the upper constant pulley is rotatably fixed to the upper end of the guide, the lower constant pulley is rotatably fixed to the lower end of the guide, and the diameter of the drum in the wire is large. The distal end of the portion extended from the trunk is locked to the upper end of the guide.

According to the present invention, the upper and lower fixed pulleys are fixed to the guide, and the tip of the wire portion extended from the large-diameter body of the drum is also locked to the guide. And a window regulator can be assembled in advance, and thereafter, the window regulator can be mounted on a door panel, so that the window regulator can be easily assembled.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the guide 1
The longitudinal direction is the vertical direction of the glass 2 (vertical direction in FIG. 1)
Are arranged so as to match. The guide 1 is formed with a linear guide portion 1a extending in the longitudinal direction. A fixed pulley 3 is rotatably fixed to the upper end of the guide 1,
A fixed pulley 4 is rotatably fixed to the lower end of the guide 1. The guide 1 is provided with a door panel (inner panel:
(Not shown).

The two sliders 5A and 5B provided on the slider base 6 are fitted to the guide portion 1a of the guide 1 so as to be able to move up and down, so that the slider base 6 can be moved up and down. One moving pulley 11 is rotatably supported by the slider base 6. The slider base 6 and the lower portion of the glass 2 are fixed using two holders 7. Thereby, the glass 2 can be moved up and down along the guide 1.

A drum base 8 is arranged beside the guide 1. As shown in FIG. 3, a cylindrical drum holding portion 8a is formed in the drum base (housing) 8, and the drum 9 is rotatably held therein. The drive shaft 10a of the motor 10 is fitted to the drum 9 and drives the drum 9 to rotate.

The drum 9 has a large-diameter trunk 9a and a small-diameter trunk 9b as winding trunks for wires (inner cables) 12 and 13. Spiral grooves are formed on the outer peripheral surfaces of the large-diameter trunk 9a and the small-diameter trunk 9b. Here, the outer diameter of the small-diameter trunk portion 9b is equal to the outer diameter of the large-diameter trunk portion 9a.
/ 2.

The wire 12 wound around the large-diameter trunk 9a is
One end is locked to the drum 9, and the portion extended from the large-diameter trunk portion 9 a is turned downward by the upper constant pulley 3, further wrapped around the moving pulley 11, and turned upward, The tip is locked to the upper end of the guide 1. Wire 12
Is connected to the guide 1 using a locking block 1b.

The wire 13 wound around the small-diameter body portion 9b is also
One end is locked to the drum 9 and the portion extended from the small-diameter trunk portion 9b is turned upward by the lower fixed pulley 4,
The tip is locked to the slider base 6. The connection between the tip of the wire 13 and the slider base 6 is performed by using a locking block 6a.

The winding direction of the wires 12 and 13 around the large-diameter trunk portion 9a and the small-diameter trunk portion 9b is such that when the drum 9 rotates, one of the feeding side portions of the wires 12 and 13 is wound up,
The other is chosen to be paid out more. The wires 12 and 13 between the drum base 8 and the guide 1 are slidably fitted in the outer cables 14 and 15, respectively. The drum base 8 and the motor 10 are supported by a door panel.

Next, the operation of the above embodiment will be described. Driving the motor 10 causes the drum 9 to rotate. By the rotation of the drum 9, for example, the pay-out side portion of the wire 12 is further fed out from the drum 9, and the pay-out side portion of the wire 13 is wound around the drum 9. When the motor 10 is rotated in the reverse direction and the drum 9 is rotated in the reverse direction, the pay-out side portion of the wire 13 is further fed out from the drum 9 and the pay-out side portion of the wire 12 is wound around the drum 9.

Since the outer diameter ratio between the large-diameter trunk portion 9a and the small-diameter trunk portion 9b is 2: 1, the amount of the wire 12 fed (or wound) from the drum 9 and the amount of wire The ratio to the winding amount (or unwinding amount) of 13 is also 2: 1. However, the wire 12 is
Paying attention to the elevating speed of the slider base 6, the elevating speed is determined by the vertical movement of the portion of the wire 12 along the guide 1 (more precisely, the hanging portion located on the right side in FIG. 1). 1/2 of the speed. On the other hand, the vertical movement speed of the portion of the wire 13 along the guide 1 is the same as the vertical movement speed of the slider base 6.

Therefore, the speed at which the wires 12 and 13 move the slider base 6 coincides with each other, and the rotation of the drum 9 does not cause the wires 12 and 13 to be improperly tensioned. By the movement of the wires 12, 13, the slider base 6 moves along the guide 1, and the glass 2 is moved up and down.

In this embodiment, the rising of the glass 2 is performed by the wire 12. In this case, due to the existence of the moving pulley 11, a force twice the tension applied to the wire 12 is applied to the slider base 6. It will act as a lifting force. In other words, the motor 10 only needs to be able to output half the force required to pull up the slider base 6 to the wire 12.

On the other hand, the lowering of the glass 2 is performed by the wire 13. In this case, the tension itself of the wire 13 acts as a pulling-down force on the slider base 6. However, since the force for pulling down the slider base 6 is much smaller than the force for pulling up, the force required to pull down the slider base 6 is small.

Therefore, in this embodiment, when the glass 2 is moved up and down, the force with which the drum 9 pulls the wires 12 and 13 may be small, and a low output motor 10 can be used as a driving source of the driving source. It is possible to reduce the size, weight and cost of

At the moment when the slider base 6 reaches the top dead center or the bottom dead center, the power of the motor 10 is not turned off, so that the motor 10 temporarily pulls the wires 12 and 13 at full output. become. However, in this embodiment, since a low-output motor is used as the motor 10,
Even at this moment, no great tension is applied to the wires 12 and 13. Therefore, a small-diameter, low-strength, inexpensive wire can be used as the wires 12 and 13.

Further, the glass 2 is placed on the slider base 6.
Is provided only for the pulley 11 for raising
The configuration of the slider base 6 is also simpler than in the above-described winding method, and the overall length of the wire 13 can be shortened.
In other words, the configuration of the slider base 6 can be made relatively simple, and the wire length does not become much longer than in the above-mentioned winding method.

The upper and lower fixed pulleys 3 and 4 are rotatably fixed to the upper end and lower end of the guide 1, respectively.
Since the tip of the portion of the drum 9 drawn out from the large-diameter trunk portion 9a of the drum 9 was locked to the upper end of the guide 1, the wire 1
The window regulator including the stretchers 2 and 13 can be assembled in advance, and by attaching the assembled window regulator to the door panel, the window regulator can be easily assembled.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the fixed pulleys 3 and 4 are
And the tip of the wire 12 is locked to the guide 1,
These may be fixed or locked to the door panel or another member integral with the door panel. Also, wires 12, 13
May be stopped from being connected to the drum 9, the ends may be connected, and the wires 12, 13 may be formed as one continuous wire. Further, the sliding structure of the slider base 6 with respect to the guide 1 may be any structure as long as it can exhibit its function.

[0028]

As described above, according to the first and second aspects of the present invention, the output of the motor required for raising and lowering the glass can be reduced, so that a motor having a low output can be used. It is possible to reduce the size, weight and cost of the motor part. In addition, since only the movable pulley for raising the glass is provided on the slider base, the configuration of the slider base portion can be relatively simplified, and the wire length does not become too long. In addition, as a result of using a low-power motor, a small-diameter, low-strength, inexpensive wire can be used.

In addition, according to the second aspect of the present invention, the upper and lower fixed pulleys are fixed to the guide, and the tip of the wire portion fed from the large-diameter trunk of the drum is also locked to the guide. Therefore, it is possible to assemble the window regulator in advance, including the tension of the wire, and then to attach this to the door panel, which facilitates the assembly of the window regulator.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along a line AA in FIG.
-A is a cross-sectional view of not only the fixed pulley 3 and the moving pulley 11 but also the locking blocks 1b and 6a).

FIG. 3 is an exploded perspective view showing a configuration of a drum and its peripheral portion in the embodiment of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide 1a Guide part 2 Glass 3,4 Constant pulley 5A, 5B Slider 6 Slider base 8 Drum base 9 Drum 9a Large diameter trunk 9b Small diameter trunk 10 Motor 10a Drive shaft 11 Moving pulley 12,13 Wire

Claims (2)

[Claims] 1. A guide arranged so that a longitudinal direction thereof coincides with a vertical direction of glass, a motor rotatable in both forward and reverse directions, a drum driven to rotate by the motor, and a vertical guide guided by the guide. And a slider base fixed to the glass, an upper constant pulley located at the upper end of the guide, a lower constant pulley located at the lower end of the guide, and wound around the drum and A wire wound around the upper constant pulley and the lower constant pulley and pulling the slider base, and rotating the drum by the motor to guide the slider base through the wire. In the window regulator for moving the glass in the longitudinal direction and moving the glass up and down, a moving pulley is rotatably supported on the slider base, The, as coiling body of the wire,
A large-diameter trunk portion and a small-diameter trunk portion having an outer diameter of 1/2 with respect to the large-diameter trunk portion are formed, and a portion of the wire that is extended from the large-diameter trunk portion of the drum is the upper fixed portion. Turned down by a pulley,
Furthermore, after being wrapped around the moving pulley and being turned upward, its tip is locked to the upper end side of the guide,
A portion of the wire extended from the small-diameter trunk portion of the drum is turned upward by the lower constant pulley, and a tip of the wire is locked to the slider base. regulator. 2. The upper constant pulley is rotatably fixed to an upper end of the guide, and the lower constant pulley is rotatably fixed to a lower end of the guide, and the large pulley of the drum at the wire is fixed to the upper end of the guide. 2. The window regulator according to claim 1, wherein a tip of a portion extended from the diameter body portion is locked to an upper end portion of the guide.