JP2000297576A - Arm and sector gear assembly for window regulator - Google Patents

Abstract

[PROBLEMS] To provide a lightweight and highly durable window regulator arm and sector gear assembly that can be efficiently produced while maintaining high accuracy. An arm for a window regulator, comprising: an arm (16) rotatably supported by a pivot (14) on a bracket plate (11); and a sector gear (17) concentric with the pivot (14) and connected to the other end of the arm (16). In the sector gear assembly, the sector gear 17 is connected to the arm 1 by a steel plate.
6 and a rim 30 which is bent to one side from the outer peripheral edge of the sector gear main body 29 and whose teeth 31 are plastically formed on the outer peripheral surface.

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 of an automobile, and more particularly, to a window plate which is rotatably supported by a pivot plate on a bracket plate fixed to a door and has one end supported by a window glass. The present invention relates to an improved window regulator arm and sector gear assembly comprising an arm connected to a member and a sector gear concentrically connected to the pivot and connected to the other end of the arm and meshing with a drive pinion gear connected to a drive means.

[0002]

2. Description of the Related Art Such a window regulator arm and a sector gear assembly are disclosed, for example, in Japanese Patent Application Laid-Open No. 1-295983.
It is already known as disclosed in Japanese Patent Publication No.

[0003]

In a conventional arm and sector gear assembly for a window regulator, the arm and the sector gear are individually formed from a steel plate. Formed to be thicker. And the arm and sector gear
They are connected to each other by welding or swaging.

When the arm and the sector gear separately formed as described above are connected to each other, the concentricity of the sector gear and the pivot and the effective length of the arm are accurately determined. It is also necessary to accurately determine the relative phase, and therefore, it is necessary to have skill in connecting the arm and the sector gear without error, which is an obstacle in increasing the production efficiency of the arm and sector gear assembly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can be produced efficiently while maintaining high accuracy, and is lightweight and highly durable. The purpose is to provide a solid.

[0006]

In order to achieve the above-mentioned object, according to the present invention, a bracket plate fixed to a door is rotatably supported by a pivot and one end is connected to a window glass support member. An arm for a window regulator and a sector gear assembly comprising an arm and a sector gear concentric with the pivot and connected to the other end of the arm and meshing with a drive pinion gear connected to a drive means;
The sector gear includes a sector-shaped sector gear body integrally formed with the arm from a steel plate, and a rim that is bent to one side from an outer peripheral edge of the sector gear body and has a tooth portion formed plastically on the outer peripheral surface. Is a first feature.

According to the first feature, the arm and the sector-shaped sector gear body are integrally formed of a steel plate, so that the arm and sector gear assembly can be obtained without using any special connecting means.

[0008] In addition, at the time of molding, by forming a pivot hole into which the pivot is fitted at the rotation center of the sector gear, the concentricity between the sector gear and the pivot, the effective length of the arm, and the arm and the sector gear around the pivot are formed. And the relative phase of the arm and sector gear assembly can be improved.

In addition, since the teeth are plastically formed on the arc-shaped rim bent to one side from the outer peripheral edge of the sector gear main body, the rim can sufficiently secure the tooth width of the teeth. Strength can be effectively increased.

Further, the existence of the rim makes it possible to make the thickness of the sector gear body as thin as the arm, so that the arm and the sector gear assembly can be significantly reduced in weight.

Further, in addition to the above-mentioned features, the present invention is characterized in that the sector gear main body is formed with a sector-shaped step portion which is convex in the bending direction of the rim along a region of a constant width from the outer peripheral edge of the sector gear. 2.

According to the second feature, the strength of the sector gear can be effectively enhanced by the cooperation of the rim and the sector-shaped step.

According to a third aspect of the present invention, in addition to the second feature, the arm is provided with a linear step portion which is continuous with the sector-shaped step portion along a region having a constant width from the outer peripheral edge thereof. Features.

According to the third feature, the strength of the entire arm and sector gear assembly can be effectively enhanced by the continuous sector-shaped step portion and the linear step portion.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

1 to 4 show a first embodiment of the present invention. FIG. 1 is a side view of a window regulator for an automobile.
2 is a side view of an arm and a sector gear assembly in the window regulator, FIG. 3 is a sectional view taken along line 3-3 in FIG. 2, and FIG. 4 is a perspective view of a portion 4 in FIG. FIG. 5 is a side view, corresponding to FIG. 1, showing a second embodiment of the present invention.

First, a description will be given of the first embodiment of the present invention. In FIG. 1, an electric motor 12 having a built-in reduction gear is mounted on a bracket plate 11 fixed to a door 10 of an automobile.
(Drive means) is attached. A pivot 14 is rotatably mounted on the bracket plate 11 in parallel with the output shaft 12a of the electric motor 12, and an arm and sector gear assembly 13 of the present invention driven by the electric motor 12 is provided on the bracket plate 11. It is connected to this pivot 14 at the hole ().

The arm and sector gear assembly 13 is composed of an arm 16 and a sector gear 17 that extend diagonally upward and diagonally downward while sharing a pivot hole 15, and the sector gear 17 is fixed to the output shaft 12a of the electric motor 12. The driven pinion gear 18 is meshed.

At the center of the arm 16 in the longitudinal direction, the center of the sub-arm 20 in the longitudinal direction is swingably connected via a connecting shaft 21, and the arm 16 and the sub-arm 20 are arranged in an X-shape.

At one end of the upper end of the arm 22, an engaging pin 2
2 are protruded, and engagement pins 23 and 24 are protruded from one side of the upper and lower ends of the sub-arm 20, respectively.
The engagement pin 24 at the lower end of the sub arm 20 is slidably engaged with a guide groove 25 a of a guide rail 25 fixed horizontally to the door 10. Arm 16 and sub-arm 2
The engagement pins 22 and 23 at the upper end of the window glass support member 27 are connected to the lower end of the window glass 26.
Is slidably engaged with the horizontal guide groove 27a.

When the electric motor 12 is operated to rotate the sector gear 17 forward or backward by the drive pinion gear 18, the arm swings back and forth around the pivot 14 and the sub-arm 20 also rotates around the connecting shaft 21. The engaging pin 24 at the lower end is slid horizontally in the guide groove 25a of the fixed guide rail 25 while swinging back and forth. As a result, the engagement pins 22 and 2 at the upper end of the arm 16 and the sub arm 20 are formed.
3 slides in the guide groove 27a of the window glass support member 27 and moves up and down.
The window glass 26 can be moved up and down via 7.

Next, the arm and sector gear assembly 13 will be described in detail with reference to FIGS.

The arm 16 and the sector gear 17 constituting the assembly 13 are integrally formed from a single steel plate. At this time, a pivot hole 15 to which the pivot 14 is connected is formed in the center of rotation of the sector gear 17. You. The assembly 13 includes
Lightening holes 32 and 33 are formed to reduce the weight.

The sector gear 17 is a sector-shaped sector gear body 2 having the same thickness as the arm 16 and integrally formed.
8 and an arc-shaped rim 30 formed by bending the outer peripheral edge of the sector gear body 28 to one side by a predetermined length t, and a tooth portion 31 is plastically formed on the outer periphery of the rim 30. The rim 30 and the teeth 31 are formed simultaneously by upsetting.

The sector gear body 29 is formed with a sector-shaped step portion 34 which is convex in the bending direction of the rim 30 along an area 36 having a constant width from the outer peripheral edge of the sector gear.
6 is formed with a linear step 35 continuous from the outer peripheral edge of the fan-shaped step 34 along a region 37 having a constant width.

Thus, by integrally forming the arm 16 and the sector-shaped sector gear main body 28 with a steel plate, the arm and sector gear assembly 13 can be obtained without using any special connecting means. By forming a pivot hole 15 to which the pivot 14 is connected at the center of rotation of the arm 17, the degree of concentricity between the sector gear 17 and the pivot 14 can be improved.
6 and the relative phase between the arm 16 and the sector gear 17 around the pivot 14 are accurately determined, thereby increasing the dimensional accuracy of the arm and sector gear assembly 13.

Further, since the teeth 31 are plastically formed on the arc-shaped rim 30 bent to one side from the outer peripheral edge of the sector gear body 28, the rim 30 sufficiently secures the tooth width t of the teeth 31. Its strength can be effectively increased.

In addition, the rim 30 and the sector-shaped step portion 34 of the sector gear body 29 which is convex in the bending direction of the rim 30.
And the strength of the sector gear 17 is enhanced, and the linear step 35 of the arm 16 which is continuous with the sector step 34 cooperates with the arm and sector gear assembly 13.
Strengthen the strength of. Further, the presence of the rim 30 makes it possible to make the thickness of the sector gear body 28 as thin as the arm 16, so that the arm and sector gear assembly 13 having high strength and light weight can be obtained.

Next, a second embodiment of the present invention will be described with reference to FIG.

In the second embodiment, the sub-arm 20
In addition, the guide rail 25 is eliminated, and instead the window glass 26 is guided up and down by the window frames 10a, 10a in front and behind the door 10. Therefore, only the engaging pin 22 of the arm 16 is slidably engaged with the guide groove 27a of the window glass supporting member 27 fixed to the lower end of the window glass 26. In addition, except that the pivot hole 15 is not provided in the arm and sector gear assembly 13 and that the width of the arm 16 is increased, the configuration is the same as that of the previous embodiment. The same reference numerals are given to the portions, and the description thereof will be omitted.

If the drive pinion gear 18 is rotated forward or backward by the operation of the electric motor 12, the sector gear 17 and the arm 16 swing back and forth around the pivot 14, and the engagement pin 22 is supported by the window glass. Since it moves up and down while sliding in the guide groove 27a of the member 27, the window glass 26 can be moved up and down along the window frames 10a. The second embodiment is effective for opening and closing the relatively small window glass 26, and the cost of the window regulator can be reduced because the sub arm 20 and the guide rail 25 are eliminated.

The present invention is not limited to the above embodiment, and various design changes can be made without departing from the gist of the present invention. For example, a manual rotating handle may be connected to the pinion gear 18 as a driving means of the drive pinion gear 18.

[0033]

As described above, according to the first feature of the present invention, the arm is rotatably supported by the pivot shaft on the bracket plate fixed to the door and has one end connected to the window glass support member. A window gear arm and a sector gear assembly comprising: a sector gear that is concentric with the pivot and connected to the other end of the arm and meshes with a drive pinion gear connected to a drive means. The sector gear body is formed integrally with the sector gear body, and the rim is bent to one side from the outer peripheral edge of the sector gear body and the teeth are plastically formed on the outer peripheral surface. Can easily obtain a high-precision arm and sector gear assembly without using special joining means by integral molding of steel plate. Improvement of production efficiency, Nobei can result in a reduction of the cost. Moreover, the rim can sufficiently secure the tooth width of the tooth portion, and the strength can be effectively increased. Further, the presence of the rim makes it possible to make the thickness of the sector gear body as thin as the arm. As a result, the weight of the assembly can be significantly reduced, and as a result, a high-quality arm and sector gear assembly can be provided at low cost.

According to the second feature of the present invention, since the sector gear main body is formed with a sector-shaped step portion which is convex in the bending direction of the rim along a region of a constant width from the outer peripheral edge of the sector gear. The cooperation of the rim and the sector step effectively enhances the strength of the sector gear.

According to a third feature of the present invention, since the arm is formed with a linear step that is continuous from the outer peripheral edge of the arm along a region of a constant width to the fan-shaped step, a continuous step-shaped step is formed. The strength of the entire arm and sector gear assembly can be effectively enhanced by the sections and the linear steps.

[Brief description of the drawings]

FIG. 1 is a side view of an automotive window regulator according to a first embodiment of the present invention.

FIG. 2 is a single side view of an arm and a sector gear assembly in the window regulator.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a perspective view of four parts in FIG. 2;

FIG. 5 is a side view corresponding to FIG. 1, showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Door 11 ... Bracket plate 12 ... Driving means (electric motor) 13 ... Arm and sector gear assembly 14 ... Axis 15 ... Axis hole 16 ... Arm 17 ... Sector gear 18 Drive pinion gear 27 Sector gear body 30 Rim 31 Tooth 34 Fan-shaped step 35 Linear step 36 Area 37 Area t .... Tooth width of teeth

Claims (3)

[Claims] An arm (16) rotatably supported by a pivot (14) on a bracket plate (11) fixed to a door (10) and having one end connected to a window glass support member (27). And a driving means (12) concentrically with the pivot (14) and connected to the other end of the arm (16).
And a sector gear (17) meshing with a drive pinion gear (18) connected to the armature for a window regulator and the sector gear assembly.
7), a sector-shaped sector gear body (29) integrally formed with the arm (16) from a steel plate, and one side bent from the outer peripheral edge of the sector gear body (29) to form a tooth portion (31) on the outer peripheral surface. ) And a plastically formed rim (30). An arm for a window regulator and a sector gear assembly. 2. The arm and sector gear assembly for a window regulator according to claim 1, wherein said sector gear body (29) is provided on said rim (30) along a region (36) having a constant width from an outer peripheral edge of the sector gear. An arm for a window regulator and a sector gear assembly, wherein a sector-shaped step (34) that is convex in a bending direction is formed. 3. The arm and sector gear assembly for a window regulator according to claim 2, wherein
6) an arm for a window regulator and a sector gear, wherein a linear step (35) is formed continuously from said outer peripheral edge to said sector-shaped step (34) along a region (36) having a constant width. Assembly.