JP2002004705A - Rotational mechanism for window regulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotational mechanism for a window regulator, adaptable to the window regulators on both right and left sides and capable of being installed even in a narrow space. SOLUTION: A worm gear 3 is mounted on the output shaft 2 of a drive motor 1. An idle wheel 4, whose rotational-shaft direction makes a right angle with an axis parallel to the output shaft 2, is meshed with the worm gear 3. An output gear 5, wherein the axis of its rotational shaft is made orthogonal to the axis of the output shaft 2, is meshed with the idle wheel 4. A rotor 6 for driving an elevator is bonded to the output gear 5 in such a manner as to be interlocked with the output gear 5 by having the rotational shaft in common.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating mechanism for a window regulator used for a power window of an automobile.

[0002]

2. Description of the Related Art A window regulator of a general automobile is of a wire type in which a wire to which a carrier for supporting a window glass is attached is slid in a forward / reverse direction by a drive motor, thereby raising and lowering the window glass. And, the window glass is supported by the main arm and the sub arm which are mounted so as to cross each other,
There is an X-arm type in which a window glass is raised and lowered by rotating a lift arm attached to a main arm forward and backward by a drive motor.

Conventionally, a window regulator rotating mechanism for transmitting the output of a drive motor to a wire or a lift arm is disclosed in Japanese Patent No. 3015637, Japanese Utility Model Laid-Open No. 6-450.
No. 50, etc., a worm is attached to the output shaft of the drive motor, and the worm is engaged with a worm wheel installed on one side of the output shaft of the drive motor.
An output gear is coupled to the worm wheel so as to share a rotation axis, and the output gear is meshed with a drum around which a wire is wound, or a sector gear mounted on the base end of the lift arm. Was.

However, in these devices, a worm wheel and an output gear, and a drum and a sector gear meshing with the output gear are arranged on one side of an output shaft of a drive motor. When used for the regulator and the window regulator on the left, the position of the center axis is shifted between the right output gear and the left output gear. Therefore, in order to mount it on an actual vehicle, two types of symmetrical parts must be manufactured and a right-hand rotating mechanism and a left-hand rotating mechanism must be prepared, causing an increase in cost. . In addition, the structure is such that the other parts protrude to one side with respect to the output shaft of the drive motor, so that the size in the width direction is increased and a large installation space is required.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating mechanism for a window regulator that can be used in a window regulator on either the left or right side and can be installed in a small space.

[0006]

According to the present invention, there is provided a rotating mechanism for a window regulator, wherein a worm gear is mounted on an output shaft of a drive motor, and an idle shaft whose rotation axis is perpendicular to an axis parallel to the output shaft of the drive motor. The wheel meshes with the worm gear, the output gear whose axis of rotation axis is orthogonal to the axis of the output shaft of the drive motor meshes with the idle wheel, and the output gear is used to drive a lifting mechanism such as a drum, pinion, etc. It is constructed by linking the bodies so that they share a rotation axis and work together.

By making the axis of the rotation shaft of the output gear orthogonal to the axis of the output shaft of the drive motor, it is possible to use both the left and right window regulators by using the same drive motor and parts. Does not protrude significantly to one side of the drive motor, so that the size in the width direction can be reduced. In addition, since power is transmitted in two stages from the worm gear to the output gear via the idle wheel,
The degree of freedom in setting the gear ratio increases.

[0008] The idle wheel and the output gear may be helical gears. This eliminates the necessity of forming an idle wheel by stacking a gear meshing with the worm gear and a gear meshing with the output gear in two stages, so that the thickness of the idle wheel can be reduced and the structure can be simplified. The plane including the axis of the output shaft of the drive motor passes through the idle wheel and the output gear,
It is also possible to further reduce the thickness of the entire device.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 and 8 show a first embodiment of a wire-type window regulator rotation mechanism that raises and lowers a window glass via a wire 7. The window regulator rotation mechanism includes a drive motor 1, a worm gear 3 attached to an output shaft 2 of the drive motor 1, an idle wheel 4 meshing with the worm gear 3, and an output gear 5 meshing with the idle wheel 4.
And a rotating body for driving an elevating mechanism including a drum 6 around which a wire 7 is wound.

A mounting plate 8 is mounted on the front surface of the drive motor 1, and a case 9 for housing the worm gear 3, the idle wheel 4 and the output gear 5 is mounted on the mounting plate 8 so as to project forward. I have.
As shown in FIG. 2, the case 9 includes an idle wheel 4
A first storage part 4 ′ for storing the output gear 5 is formed on one side of the output shaft 2, and a second storage part 5 ′ for storing the output gear 5 is formed on the front face of the drive motor 1. I have. Further, three attachment pieces 9 ′ for attaching the rotation mechanism for the window regulator to the door of the automobile are formed on the peripheral edge of the case 9. The three mounting pieces 9 ′ are respectively extended on extensions of three radii that divide the circumference into three equal parts, and one of them is provided on an extension of the output shaft 2 of the drive motor 1, It is formed so as to be symmetrical with respect to the extension of the output shaft 2.

As shown in FIG. 3, the first storage portion 4 'of the case 9 has a cylindrical shape with an open lower surface, and a cylindrical portion 22 serving as a rotation axis of the idle wheel 4 has an output shaft at the center thereof. It is formed at right angles to an axis parallel to 2. The second storage section 5 'has a cylindrical shape with an open upper surface, and is formed at a position slightly higher than the first storage section 4'. The output gear 5 is located at the center of the second storage portion 5 '.
An annular projection 13 serving as a rotation axis is formed so as to be orthogonal to the axis of the output shaft 2.

The idle wheel 4 is made of a helical gear made of glass fiber-filled nylon or the like, and has a circular hole 23 formed at the center thereof as shown in FIG. The idle wheel 4 is housed in the first housing portion 4 ′ of the case 9, and the cylindrical portion 22 is inserted into the circular hole 23. The lower surface of the first storage section 4 ′ is closed by a lid 28. As a result, the idle wheel 4
Is mounted on one side of the output shaft 2 so that its rotation axis direction is perpendicular to an axis parallel to the output shaft 2 of the drive motor 1.

The thickness of the idle wheel 4 is substantially the same as the value obtained by adding the diameter of the worm gear 3 and the thickness of the output gear 5, and the lower portion of the idle wheel 4 is meshed with the worm gear 3. In addition, idle wheel 4
A single-stage helical tooth may be formed continuously from the upper end to the lower end, or the outer periphery may be divided into two upper and lower stages, and a helical tooth that meshes with the worm gear 3 may be formed at a lower portion, and an upper portion may be formed at an upper portion. A helical gear meshing with the output gear 5 can be formed.

The output gear 5 is formed of a helical gear made of polyacetal or the like. As shown in FIGS. 4 and 5, a through hole 10 surrounded by a circular wall 15 is formed at the center thereof, and the output gear 5 has a circular shape. A cavity 11 that opens upward is formed between the wall 15 and the peripheral wall, and a plurality of (three in the example shown in the figure) feet 12 extending in the radial direction are formed in the cavity 11. This output gear 5 is, as shown in FIGS.
By fitting the through-hole 10 into the annular projection 13 of the case 9, the axis of the rotation shaft and the axis of the output shaft 2 of the drive motor 1 are rotatably installed so as to be orthogonal to each other. Has been engaged.

In order to prevent the drum 6 from rattling, a damper 1 made of a vibration-proof rubber is provided in the hollow portion 11 of the output gear 5.
4 is inserted. As shown in FIG. 6, a through hole 16 is formed at the center of the damper 14, and a plurality (six in the example shown) of notches 17 are formed from the outer peripheral edge toward the center. The damper 14 has a circular wall 1 in the through hole 16.
5 is inserted into the hollow portion 11 of the output gear 5 by engaging the notch 17 with the foot portion 12 (FIG. 8).

On the upper surface of the output gear 5, a rotating body composed of a drum 6 for driving an elevating mechanism is coupled so as to cooperate with a common rotating shaft. At the center of the drum 6, a cylindrical portion 18 is provided along the rotation axis. As shown in FIG. 7, on the lower surface of the drum 6, a plurality of (three in the example shown) locking projections along the radial direction are provided. 19 are formed. As shown in FIG. 8, this drum 6 has a locking projection 19 fitted into a notch 17 not engaged with the foot 12 of the damper 14, and a lower end of the cylindrical portion 18 is connected to the annular projection 13 of the case 9. Is connected to the output gear 5.

A substantially cylindrical cover 20 is covered on the upper surface and the periphery of the drum 6 and is screwed to the case 9. The wire 7 wound around the drum 6 is pulled out from one side of the cover 20. Outlet 21 is formed. A carrier fixed to a window glass (not shown) is attached to the wire 7 outside the drum 6 similarly to the conventional window regulator. Further, since a space is formed below the output gear 5 on the extension of the output shaft 2 of the drive motor 1, a motor speed control pulse is generated at the tip of the output shaft 2 by utilizing this space. Can be mounted.

The window regulator rotating mechanism in the first embodiment operates as follows. When the drive motor 1 is driven, the worm gear 3 attached to the output shaft 2 rotates, and accordingly, the idle wheel 4 meshing with the worm gear 3 rotates around the rotation shaft perpendicular to the output shaft 2. Then, the output gear 5 meshing with the idle wheel 4 rotates about a rotation shaft perpendicular to the output shaft 2, and the drum 6 coupled to the output gear 5 rotates in conjunction therewith. As a result, the wire 7 wound around the drum 6 moves, and the window glass connected to the wire 7 via the carrier moves up and down. In addition, the rotation mechanism for the window regulator is provided between the drive motor 1 and the left door when the drive motor 1 is installed on the right door.
The output gear 5 and the output gear 5 are attached to the door of the automobile via the attachment piece 28 with their left and right directions being opposite to each other.

FIG. 9 shows a second embodiment of the rotating mechanism for a window regulator according to the present invention. A worm gear 3 mounted on the output shaft 2 of the drive motor 1;
Idle wheel 4 that meshes with
The output gear 5 meshing with the output shaft 5 is installed in the same plane, and a plane including the axis of the output shaft 2 passes through the idle wheel 4 and the output gear 5.

The thickness of the idle wheel 4 is substantially the same as the thickness of the output gear 5, and the rotation of the output shaft 2 of the drive motor 1 is transmitted in the same plane via the worm gear 3 and the idle wheel 4. . In this case, the thickness of the device can be further reduced. In this window regulator rotating mechanism, since there is no space below the output gear 5, the pulse generating magnet 24 may be attached to the output shaft 2 of the drive motor 1 at a position closer to the base end than the worm gear 3. . Other configurations are almost the same as those of the first embodiment, and therefore, the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.

FIG. 10 shows a third embodiment which is a rotation mechanism for an X-arm type window regulator. The rotation mechanism for the window regulator includes a pinion 25 meshing with a sector gear (not shown) mounted on the lift arm.
And a rotating body for driving the elevating mechanism. Pinion 2
5 is provided so as to interlock with the upper part of the center of the substrate 27, and the center shaft 26 is inserted into the annular projection 13 of the case 9 to be coupled to the output gear 5 so as to cooperate with the output gear 5 while sharing a rotation axis. You. On the lower surface of the substrate 27, a locking projection 19 similar to the lower surface of the drum 6 is formed, and is incorporated in the output gear 5 and the damper 14 in the same manner as the drum 6. The other configuration is almost the same as that of the first embodiment, and thus the detailed description is omitted.

[0022]

According to the first aspect of the present invention, since the output gear and the rotating body for driving the elevating mechanism are installed symmetrically with respect to the output shaft of the drive motor, the same drive motor and parts can be used. It can be used for window regulators on both the left and right sides, and the cost can be easily reduced. In addition, since the output gear and the rotating body do not protrude significantly to one side of the drive motor, the dimension in the width direction can be reduced. Further, since the force is transmitted in two stages from the worm gear to the output gear via the idle wheel, the degree of freedom in setting the gear ratio increases.

According to the second aspect of the present invention, since the worm gear, the idle wheel and the output gear all have helical tooth forms, the helical gear meshing with the worm gear and another type of gear meshing with the output gear are overlapped with each other. Therefore, the thickness of the idle wheel can be reduced and the structure can be simplified. According to the third aspect of the present invention, since the entire device is thin and not bulky, it can be installed in a narrow space.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of a rotation mechanism for a window regulator according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a sectional view of a case.

FIG. 4 is a plan view of an output gear.

FIG. 5 is a sectional view of an output gear.

FIG. 6 is a plan view of a damper.

FIG. 7 is a bottom view of the drum.

FIG. 8 is a cross-sectional plan view of a window regulator rotating mechanism according to the first embodiment of the present invention.

FIG. 9 is a side sectional view of a rotation mechanism for a window regulator according to a second embodiment of the present invention.

FIG. 10 is a side view of an output gear and a rotating body according to a third embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 drive motor 2 output shaft 3 worm gear 4 idle wheel 4 ′ first storage section 5 output gear 5 ′ second storage section 6 drum (rotating body) 7 wire 8 mounting plate 9 case 9 ′ mounting piece 10 through hole 11 cavity Part 12 foot part 13 annular projection 14 damper 15 circular wall 16 through hole 17 notch 18 cylindrical part 19 locking projection 20 cover 21 drawer 22 cylindrical part 23 circular hole 24 magnet 25 pinion 26 central axis 27 substrate 28 lid

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E052 AA09 CA06 DA03 DA08 DB03 DB08 EA14 EB01 KA15 3D127 AA17 AA19 BB01 CB05 CC05 DF04 DF12 3J009 EA06 EA19 EA32 EB02 EB17 EC01 FA04

Claims (3)

[Claims] A worm gear is mounted on an output shaft of a drive motor, and an idle wheel having a rotation axis direction perpendicular to an axis parallel to the output shaft of the drive motor is meshed with the worm gear. An output gear orthogonal to the axis of the output shaft of the drive motor is meshed with the idle wheel, and a rotating body for driving a lifting mechanism is coupled to the output gear so as to interlock with and share a rotating shaft. A rotation mechanism for a window regulator. 2. The window regulator rotating mechanism according to claim 1, wherein the idle wheel and the output gear are helical gears. 3. The rotation mechanism according to claim 2, wherein a plane including an axis of an output shaft of the drive motor passes through the idle wheel and the output gear.