JP2002357051A - Window regulator and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window regulator which is improved in welding strength between a driven gear and a lift arm, thereby eliminating poor weld, and to provide a method for producing the window regulator. SOLUTION: According to the window regulator, a projecting portion 3b for projection welding is formed on the driven gear 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driven gear that is driven to rotate about a center of an addendum circle by a driving source, has a smaller thickness than the driven gear, has a base end attached to the driven gear, The present invention relates to a window regulator having a lift arm locked to a window at a section side, and rotating the driven gear to rotate the lift arm to open and close the window glass, and a method of manufacturing the same.

[0002]

2. Description of the Related Art A window regulator is a device that is attached to a door inner panel and raises and lowers a window glass.

There are two types of window regulators: an arm type, a wire type, and the like. In the case of the arm type, a driven gear that is rotated about a center of an addendum circle and is driven by a driving source, and a plate that is thinner than the driven gear It has a lift arm which is thick, has a base end attached to the driven gear, and has a front end locked to a window.

[0004] Attachment of the driven gear and the lift arm
A protrusion (dub) is formed on the lift arm side and is welded by projection welding.

[0005]

However, in the case of the above construction, a projection is formed on the side of the lift arm having a small thickness, and projection welding is performed. There is a problem that abnormal deformation (welding abnormality) is likely to occur in the vicinity of the portion, which causes a decrease in welding strength and poor welding.

[0006] The present invention has been made in view of the above problems, and an object of the present invention is to provide a window regulator in which the welding strength between a driven gear and a lift arm is improved and welding defects are eliminated, and a method of manufacturing the same. .

[0007]

According to a first aspect of the present invention, there is provided a driven gear having a center of rotation of the addendum circle as a center of rotation, a driven gear rotatably driven by a driving source, a plate having a smaller thickness than the driven gear, A base end is attached to the driven gear, and a lift arm having a distal end locked to a window is provided.A window regulator that rotates the lift arm by rotating the driven gear to open and close the window glass. A projection part for projection welding is formed on the driven gear side.

[0008] By forming a protruding portion on a driven gear having a large plate thickness, even if pressure variation during welding or the like occurs,
The lift arm in the vicinity of the protruding portion is unlikely to be abnormally deformed, so that the welding strength is not reduced and the welding failure is also eliminated.

As a window regulator using such a driven gear and a lift arm, a window arm of a single arm type in which the glass is opened and closed only by the lift arm as in the invention of the second aspect, and a window regulator of the third aspect of the invention. As described above, there is an X-arm type window regulator that opens and closes the glass with a lift arm and an equalizer arm crossing the lift arm.

According to a fourth aspect of the present invention, there is provided a driven gear which is driven to rotate by a driving source with the center of the addendum circle as a center of rotation, a base plate having a smaller thickness than the driven gear, a base end attached to the driven gear, A lift arm locked to a window at a section side, and by rotating the driven gear, the lift arm is rotated to open and close the window glass. A method for manufacturing a window regulator, characterized in that the lift arm is welded to the base end of the lift arm by projection welding.

[0011] By forming the protruding portion on the driven gear having a large thickness, even if the pressure during welding varies.
The lift arm in the vicinity of the protruding portion is unlikely to be abnormally deformed, so that the welding strength is not reduced and the welding failure is also eliminated.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present embodiment is applied to an X-arm window regulator used in a passenger car, and this embodiment will be described with reference to FIG.

In FIG. 1, a base plate 1 is mounted on a door panel (inner) (not shown). A driven gear 3 is rotatably mounted on the base plate 1 with pins 2. This pin 2 is located at the center of the addendum circle of the driven gear 3.

Since the present embodiment is a power type window regulator, a driving motor 4
Is mounted on the rotary shaft 4a, which is the final output shaft of the gear, together with a reduction gear box. Although not shown in FIG. 2, a pinion is provided, and the tooth portion 3a of the driven gear 3 meshes with the pinion. . Therefore, if the rotating shaft 4a is driven clockwise in FIG. 2 by the motor 4, the driven gear 3 rotates counterclockwise, and conversely, the rotating shaft 4a rotates.
If a is driven counterclockwise, the driven gear 3 rotates clockwise.

A lift arm 5 made of steel of the same material as the driven gear 3 and having a smaller thickness than the driven gear 3 is welded to the driven gear 3 in the radial direction of the addendum circle.
Welding of the driven gear 3 and the lift arm 5 was performed at a portion P indicated by three broken-line circles shown in the figure by using a projection welding method of the present invention described later.

The lift arm bracket 6 is attached to a lower portion of a window glass (not shown), has a substantially C-shaped cross section, and has a slit-like guide 6a extending in a direction intersecting the opening / closing direction M of the window glass. Is formed. A slider 7 movable along a guide 6a is fitted to the lift arm bracket 6. Slider 7 is pin 8
Thus, it is rotatably locked to the lift arm 5.

The equalizer arm 10 includes a lift arm 5
The intermediate portion is pivotally attached to the intermediate portion so as to be rotatable and cross in an X-shape. In this embodiment, the equalizer arm 10 is configured by integrally fixing a first arm 11 and a second arm 12 that are separately formed.

That is, as shown in FIG. 3, which is a cross-sectional view taken along the line AA in FIG. 2, a cylindrical portion 114 of the first arm portion 11 rotatably fitted in the hole 51c of the lift arm 5. The cylindrical portion 124 of the second arm portion 12 which is arranged to face the first arm portion 11 with the lift arm 5 interposed therebetween is welded by a projection welding method in a state where the end faces (bottom portions) abut against each other. For this reason, the first arm 11
And the second arm portion 12 on the front and back of the lift arm 5,
It turns integrally.

Returning to FIG. 2, the equalizer arm bracket 13 is attached to a door inner panel (not shown), has a substantially C-shaped cross section, and is a guide 13a parallel to the guide 6a of the lift arm bracket 6. Are formed. A slider 14 that can move along a guide 13a is fitted to the equalizer arm bracket 13. The slider 14 is rotatably locked to the base end (first arm portion 11) of the equalizer arm 10 by a pin 15.

On the other hand, a slider 16 is rotatably locked by a pin 17 at the tip end (second arm portion 12) of the equalizer arm 10, and the slider 16 is moved along the guide 6a of the lift arm bracket 6. It is fitted movably.

Next, the operation of this embodiment will be described.
FIG. 2 shows a state where the window glass is closed. For this reason,
The lift arm 5 is rotating counterclockwise until the window glass comes into contact with the window frame. In order to lower the window glass from this state, the rotating shaft 4a is driven by the motor 4 in the counterclockwise direction in FIG. 2 to rotate the lift arm 5 in the clockwise direction. When driven in this manner, the equalizer arm 10 rotates counterclockwise in conjunction with the rotation of the lift arm 5, and eventually, the sliders 7 and 16
Thus, the lift arm bracket 6 is lowered while moving in the guide direction a, and the lift arm bracket 6 is lowered in the M direction. Therefore, the window glass also descends. Thereafter, in order to raise the window glass, the motor 4 drives the rotating shaft 4a clockwise.

Next, a projection welding method as a method for welding the driven gear 3 and the lift arm 5 will be described with reference to FIG. 1 which is a cross-sectional view taken along the line BB of FIG. The driven gear 3 is formed with a protruding portion 3b that comes into contact with the lift arm 5 that is thinner than the driven gear 3.

The first welding electrode 101 in contact with the driven gear 3 and the second welding electrode 201 in contact with the lift arm 5 sandwich the driven gear 3 and the lift arm 5, apply a current to both, and pressurize the two. Perform welding.

Next, an example of a production line using the above-described projection welding method will be described with reference to FIG. In the drawings, arrows indicate the flow of the line.

In the figure, a lift arm 5 manufactured in another process is set on a lift arm setting section 300,
The driven gear 3 manufactured in another process is set in the driven gear setting section 301. Note that the driven gear 3 does not have the protrusion 3b.

The lift arm 5 set in the lift arm setting section 300 is transported to the slider mounting section 303,
The pin 8 and the slider 7 are attached. Subsequently, it is transported to the equalizer arm welding part 305 and lift arm 5
, An equalizer arm 10 is attached.

On the other hand, the driven gear 3 set in the driven gear set portion 301 is set at a predetermined angle in a press device of the protrusion forming portion 307, and the protrusion 3b is formed by the press device.

The mounting angle between the driven gear 3 and the lift arm 5 differs depending on the type of vehicle. On the other hand, when performing projection welding, as shown in FIG.
It is preferable to provide the protrusion 3b at a position symmetrical with respect to the axis of the lift arm from the viewpoint of welding strength.

Therefore, in the present embodiment, the driven gear 3 is transported and set from the driven gear setting section 301 to the protrusion forming section 307 by using a robot hand, and the driven gear 3 is moved at an angle corresponding to the type of vehicle. 307
Set it to

The lift arm 5 and the driven gear 3 on which the protruding portion 3b is formed are connected to the driven gear welding portion 30.
9, and both are projection-welded. According to the above configuration, the driven gear 3 having a large thickness
By forming b, the lift arm 5 in the vicinity of the protruding portion 3b is unlikely to be abnormally deformed due to variations in pressurization at the time of welding, and therefore, there is no reduction in welding strength and no poor welding.

The lift arm 5 and the driven gear 3
Immediately before welding, the protruding portion 3b corresponding to the vehicle type is formed on the driven gear 3 by a press device, so that only one type of die is required for manufacturing the driven gear 3, and the manufacturing cost can be reduced. Becomes

The present invention is not limited to the above embodiment. In the above-described embodiment, the description has been made of the X-arm window regulator. However, in FIG. 2, the present invention is also applicable to a single-arm window regulator in which the equalizer arm 10 and the equalizer arm bracket 13 are eliminated.

[0033]

As described above, according to the present invention, by forming a protruding portion on a thick driven gear, the lift arm near the protruding portion is abnormally deformed due to pressure variations during welding. Therefore, the welding strength is not reduced and the welding failure is also eliminated.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the invention portion of an embodiment;
FIG. 3 is a sectional view taken along section line BB in FIG. 2.

FIG. 2 is a diagram illustrating a window regulator according to an embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a diagram illustrating a manufacturing method.

[Explanation of symbols]

 3 Driven gear 3b Projection 5 Lift arm

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yutaka Okuhara 2nd Kiririhara-cho, Fujisawa-shi, Kanagawa Prefecture Shiroki Industry Co., Ltd. F-term (reference) 3D127 AA00 CB05 DF03 DF08 DF12

Claims (4)

[Claims] 1. A driven gear that is rotated about a center of an addendum circle and is driven by a drive source. A thinner thickness than the driven gear. A window arm for rotating the lift arm by rotating the driven gear to open and close the window glass, wherein a projection for projection welding is formed on the driven gear side. A window regulator characterized by the following. 2. The window regulator according to claim 1, wherein the window regulator is a single arm type in which the glass is opened and closed only by a lift arm. 3. The window regulator according to claim 1, wherein the window regulator is an X-arm type that opens and closes the glass with a lift arm and an equalizer arm that intersects the lift arm. 4. A driven gear that is rotated about a center of the addendum circle by a driving source, has a smaller thickness than the driven gear, has a base end attached to the driven gear, and has a front end locked to a window. A method of manufacturing a window regulator that rotates the lift arm by rotating the driven gear, and opens and closes the window glass. A method for manufacturing a window regulator, comprising welding a base end portion by projection welding.