JP3790133B2 - Window regulator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a driven gear whose center of rotation is the center of the tip circle, a lift arm having a proximal end fixed to the driven gear, and a hole penetrating in the middle portion, and a window glass that is attached to the window glass. A guide extending in a direction crossing the opening / closing direction is formed, and includes a lift arm bracket that engages with a tip end portion of the lift arm by the guide, a first arm portion, and a second arm portion. By connecting the first arm portion and the second arm portion via the intermediate portion, the intermediate portion is pivotally attached to the intermediate portion of the lift arm so as to be pivotable and intersect the lift arm in an X-shape. And an equalizer arm in which the first arm portion engages with the lift arm and a guide parallel to the guide of the lift arm bracket are formed. And an equalizer arm bracket to guide the second arm portion of the over arm, by rotating the driven gear, rotating the lift arm, about the window regulator to open and close the window glass.
[0002]
[Prior art]
FIG. 5 is a configuration diagram of a conventional window regulator.
A drive motor 4 is attached to the base plate 1 together with a reduction gear box, and a rotary shaft 4a that is the final output shaft is provided with a pinion (not shown in the figure). The tooth portion 3a is engaged. Therefore, if the rotating shaft 4a is driven clockwise in the figure by the motor 4, the driven gear 3 rotates counterclockwise. Conversely, if the rotating shaft 4a is driven counterclockwise, the driven gear 3 rotates clockwise. Will rotate.
[0003]
In this embodiment, the lift arm 5 is fixed to the driven gear 3 in the radial direction of the tip circle. 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 is formed with a slit-shaped guide 6a extending in a direction crossing the opening / closing direction M of the window glass. Yes. The lift arm bracket 6 is fitted with a slider 7 movable along the guide 6a. The slider 7 is pivotally locked to the tip end portion 55 of the lift arm 5 with a pin 8.
[0004]
The equalizer arm 10 is pivotally attached to the intermediate portion of the lift arm 5 so as to be pivotable and intersect the X shape. In this conventional example, the equalizer arm 10 is configured by integrally fixing a first arm portion 11 and a second arm portion 12 of substantially the same shape which are separately molded.
[0005]
The equalizer arm bracket 13 is attached to a door panel (inner) (not shown), has a substantially C-shaped cross section, and a guide 13a parallel to the guide 6a of the lift arm bracket 6 is formed. The equalizer arm bracket 13 is fitted with a slider 14 that can move along the guide 13a. The slider 14 is pivotally locked to the base end portion (second arm portion 12) of the equalizer arm 10 with a pin 15.
[0006]
On the other hand, a slider 16 is pivotally locked by a pin 17 to the tip end portion (first arm portion 11) of the equalizer arm 10, and the slider 16 is movable along the guide 6a of the lift arm bracket 6. It is mated.
[0007]
Next, the operation of this embodiment will be described. FIG. 5 shows a state in which the window glass is closed. For this reason, the lift arm 5 rotates counterclockwise until the window glass comes into contact with the window frame. In order to lower the window glass from this state, the rotary shaft 4a may be driven counterclockwise in FIG. 5 by the motor 4 to rotate the lift arm 5 clockwise. If driven in this way, the equalizer arm 10 rotates counterclockwise in conjunction with the rotation of the lift arm 5, and eventually the sliders 7 and 16 move down in the guide direction of the guide 6a, and the lift arm The bracket 6 is lowered in the M direction. Therefore, the window glass is also lowered. Thereafter, in order to raise the window glass, the rotating shaft 4 a may be driven clockwise by the motor 4.
[0008]
[Problems to be solved by the invention]
In this type of window regulator, the window glass slightly moves in the vehicle width direction when opening and closing, so that the equalizer arm 10 bends and follows this movement in the vehicle width direction, that is, the bending rigidity of the equalizer arm 10 in the plate thickness direction. Must be a moderate value.
[0009]
The equalizer arm 10 also needs to have sufficient torsional rigidity with respect to its longitudinal axis so that the window glass does not tilt.
However, the first arm portion 11 and the second arm portion 12 constituting the equalizer arm 10 having the above-described configuration are the same material, the same plate thickness, and the same shape except for the shape of the connecting portion between them. The directional bend stiffness and the torsional stiffness with respect to the longitudinal axis are substantially the same.
[0010]
Therefore, if the followability of the window glass in the vehicle width direction is improved, the torsional rigidity with respect to the longitudinal axis of the equalizer arm is insufficient and the window glass tilts. Conversely, if the window glass is not tilted, the equalizer arm It is difficult to establish both of them (followability of the window glass in the vehicle width direction and prevention of tilting of the window glass) due to the too large curl rigidity in the plate thickness direction. is there.
[0011]
The present invention has been made in view of the above problems, and a first object thereof is to provide a window regulator that follows the movement in the vehicle width direction when the window glass is opened and closed, and has a small inclination of the window glass. .
[0012]
Another object of the present invention is to provide a window regulator that can be reduced in weight.
[0013]
[Means for Solving the Problems]
The invention according to claim 1, which solves the above problem, is a driven gear having a center of rotation of the tip of the tip circle, a lift arm having a proximal end fixed to the driven gear, and a hole penetrating through the intermediate portion. A lift arm bracket that is attached to the window glass and extends in a direction that intersects with the opening / closing direction of the window glass is formed, and a first arm portion and a second arm that engage with the tip of the lift arm by the guide The first arm portion and the second arm portion are connected to each other through the hole of the lift arm, so that the intermediate portion of the lift arm can be rotated, and the lift arm and the X shape can be formed. An intermediate portion is pivotally attached so as to intersect, and an equalizer arm in which the first arm portion engages with the lift arm bracket, and a guide parallel to the guide of the lift arm bracket are provided. A window regulator that has an equalizer arm bracket configured to guide the second arm portion of the equalizer arm with the guide, and rotates the driven gear to rotate the lift arm and open and close the window glass. The torsional stiffness and the vehicle width direction bend stiffness of the first arm portion of the equalizer arm are set to be smaller than the torsional stiffness and the vehicle width direction bend stiffness of the second arm portion. It is a window regulator characterized by.
[0014]
By setting the bend stiffness in the vehicle width direction of the first arm portion of the equalizer arm to be smaller than the bend stiffness in the vehicle width direction of the second arm portion, that is, the bend stiffness in the plate thickness direction on the tip side of the equalizer arm. By making it small, the front end side is easily bent in the vehicle width direction, and the equalizer arm follows the movement of the window glass in the vehicle width direction when the window glass is opened and closed.
[0015]
In addition, because the equalizer arm follows the movement of the window glass in the vehicle width direction when the window glass is opened and closed, the sliding resistance between the guide that guides the window glass in the opening and closing direction and the window glass is reduced, and the smooth window Glass can be opened and closed, and guide wear is reduced.
[0016]
Further, the torsional rigidity with respect to the longitudinal axis of the first arm portion of the equalizer arm is set to be smaller than the torsional rigidity with respect to the longitudinal axis of the second arm portion, that is, the torsional rigidity on the proximal end side of the equalizer arm. Is set to be larger than the front end side, the inclination of the window glass is reduced.
[0017]
According to a second aspect of the present invention, the outer shapes of the first arm portion and the second arm portion are substantially the same, and are substantially the same at substantially the same positions of the first arm portion and the second arm portion. The window regulator according to claim 1, wherein a planar bead is formed, and a height of the bead of the first arm portion is set lower than a height of the bead of the second arm portion.
[0018]
The outer shapes of the first arm portion and the second arm portion are substantially the same shape, and beads having substantially the same planar shape are formed at substantially the same positions of the first arm portion and the second arm portion, By setting the height of the bead of the first arm portion to be lower than the height of the bead of the second arm portion, the torsional rigidity and the lashing rigidity in the vehicle width direction with respect to the longitudinal axis of the first arm portion of the equalizer arm Is smaller than the torsional rigidity and the curving rigidity in the vehicle width direction with respect to the longitudinal axis of the second arm portion.
[0019]
By forming beads on the first arm portion and the second arm portion, the rigidity is improved, and a thinner material can be used and the weight can be reduced.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of a window regulator according to an embodiment of the present invention.
[0021]
The difference between the present embodiment and the conventional example is the equalizer arm, and the other parts are the same. Therefore, the same parts as those in FIG. Omitted.
[0022]
The equalizer arm 110 is pivotally attached to the intermediate portion of the lift arm 5 so as to be pivotable and intersects in an X shape. The equalizer arm 110 is formed by separately forming substantially the same shape of the first arm portion 111 and the second arm portion. 121 is integrally fixed.
[0023]
Next, the 1st arm part 111 is demonstrated using FIG. (A) is a plan view, (b) is a cross-sectional view taken along line AA in FIG. (A), and (c) is a cross-sectional view taken along line BB in FIG.
[0024]
One end portion of the first arm portion 111 forms an intermediate portion of the equalizer arm 110, and a cylindrical portion 114 (see FIG. 4) that is rotatably fitted in the hole 51c of the lift arm 5 is formed here. Has been.
[0025]
On the cylindrical portion 114, a projection welding projection 114a is formed.
On the other hand, a hole 113 for attaching the pin 17 is formed at the other end of the first arm portion 111.
[0026]
A bead (protrusion) 115 is formed at an intermediate portion of the first arm portion 111.
Next, the 2nd arm part 121 is demonstrated using FIG. (A) is a plan view, (b) is a cross-sectional view taken along the line CC in FIG. (A), and (c) is a cross-sectional view taken along the line DD in FIG.
[0027]
One end portion of the second arm portion 121 forms an intermediate portion of the equalizer arm 110, and has a larger diameter than the cylindrical portion 114 of the first arm portion 111 and has a cylindrical portion 114 of the first arm portion 111. A cylindrical portion 124 to be projection welded is formed.
[0028]
On the other hand, a hole 123 for attaching the pin 15 is formed at the other end of the second arm portion 121.
A bead 125 having substantially the same planar shape is formed at an approximately same position as the bead 115 of the first arm portion 111 at the intermediate portion of the second arm portion 121.
[0029]
Next, a method for fixing the first arm portion and the second arm portion will be described with reference to FIG.
The cylindrical portion 114 of the first arm portion 111 fitted into the hole 51c of the lift arm 5 and the cylindrical portion 124 of the second arm portion 121 disposed to face the first arm portion 111 with the lift arm 5 in between are: They are fixed by projection welding with their bottoms abutted against each other.
[0030]
For this reason, the first arm portion 111 and the second arm portion 121 rotate integrally on the front and back of the lift arm 5.
An annular pressing portion 119 is formed on the outer side of the cylindrical portion 114 of the first arm portion 111, and the lift arm 5 is pressed at this portion so that no play is generated between the lift arm 5 and the first arm portion 111. ing.
[0031]
And the height (H1) of the bead 115 of the 1st arm part 111 was set lower than the height (H2) of the bead 125 of the 2nd arm part 121. FIG.
Next, the operation of this embodiment will be described. FIG. 1 shows a state in which the window glass is closed. For this reason, the lift arm 5 rotates counterclockwise until the window glass comes into contact with the window frame. In order to lower the window glass from this state, the rotary shaft 4a may be driven counterclockwise in FIG. 1 by the motor 4 and the lift arm 5 may be rotated clockwise. If driven in this way, the equalizer arm 10 rotates counterclockwise in conjunction with the rotation of the lift arm 5, and eventually the sliders 7 and 16 move down in the guide direction of the guide 6a, and the lift arm The bracket 6 is lowered in the M direction. Therefore, the window glass is also lowered. Thereafter, in order to raise the window glass, the rotating shaft 4 a may be driven clockwise by the motor 4.
[0032]
According to the above configuration, the first arm part 111 and the second arm part 121 have the same outer shape, and the first arm part 111 and the second arm part 121 have substantially the same planar shape at substantially the same position. By forming the beads 115 and 125 and setting the height (H1) of the bead 115 of the first arm portion 111 to be lower than the height (H2) of the bead 125 of the second arm portion 121, the first arm of the equalizer arm 110 is set. The lash rigidity in the vehicle width direction of the arm portion 111 is smaller than the lash rigidity in the vehicle width direction of the second arm portion 121, that is, by reducing the lash rigidity in the plate thickness direction on the tip side of the equalizer arm 110, It becomes easy to bend in the vehicle width direction, and the equalizer arm follows the movement of the window glass in the vehicle width direction when the window glass is opened and closed.
[0033]
Furthermore, since the equalizer arm 110 follows the movement of the window glass in the vehicle width direction when the window glass is opened / closed, the sliding resistance between the window glass and the guide that guides the window glass in the opening / closing direction is reduced, so that it is smooth. The window glass can be opened and closed, and the wear of the guide is reduced.
[0034]
Further, the torsional rigidity with respect to the longitudinal axis of the first arm portion 111 of the equalizer arm 110 is smaller than the torsional rigidity with respect to the longitudinal axis of the second arm portion 121, that is, the torsional rigidity on the proximal end side of the equalizer arm 110 is reduced. Since it becomes larger than the front end side, the inclination of the window glass is reduced.
[0035]
Furthermore, by forming the beads 115 and 125 on the first arm portion 111 and the second arm portion 121, the rigidity of the first arm portion 111 and the second arm portion 121 is improved, and it is possible to use a thinner material and lighter than before. Can be achieved.
[0036]
The present invention is not limited to the above embodiment.
In the above embodiment, the first arm portion 111 and the second arm portion 121 are formed with beads, and the rigidity of the first arm portion 111 and the second arm portion 121 is set according to the height of the beads. In addition, a bent flange may be formed on the periphery of the first arm portion 111 and the second arm portion 121, and the rigidity of the first arm portion 111 and the second arm portion 111 may be set according to the width of the flange. A hole may be opened in the two-arm portion 121, and the rigidity may be set depending on the area and number of holes.
[0037]
【The invention's effect】
As described above, according to the first aspect of the invention, by setting the bend rigidity in the vehicle width direction of the first arm portion of the equalizer arm to be smaller than the bend rigidity in the vehicle width direction of the second arm portion, In other words, by reducing the bending rigidity in the thickness direction on the tip side of the equalizer arm, the tip side becomes easy to bend in the vehicle width direction, and the equalizer arm follows the movement of the window glass in the vehicle width direction when the window glass is opened and closed. To do.
[0038]
In addition, because the equalizer arm follows the movement of the window glass in the vehicle width direction when the window glass is opened and closed, the sliding resistance between the window glass and the guide that guides the window glass in the opening and closing direction is reduced, and a smooth window. Glass can be opened and closed, and guide wear is reduced.
[0039]
Further, the torsional rigidity with respect to the longitudinal axis of the first arm portion of the equalizer arm is set smaller than the torsional rigidity with respect to the longitudinal axis of the second arm portion, that is, the torsional rigidity on the proximal end side of the equalizer arm. Is set to be larger than the front end side, the inclination of the window glass is reduced.
[0040]
According to the invention of claim 2, the outer shape of the first arm part and the second arm part are substantially the same shape, and the first arm part and the second arm part are substantially at the same position, By forming a bead having substantially the same planar shape and setting the height of the bead of the first arm portion to be lower than the height of the bead of the second arm portion, the longitudinal axis of the first arm portion of the equalizer arm The torsional rigidity and the bezel rigidity in the vehicle width direction are smaller than the torsional rigidity and the bezel rigidity in the vehicle width direction with respect to the longitudinal axis of the second arm portion.
[0041]
By forming the beads on the first arm portion and the second arm portion, the rigidity is improved, and a thinner material can be used and the weight can be reduced.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a window regulator according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining a first arm portion of the equalizer arm of FIG. 1;
3 is a diagram illustrating a second arm portion of the equalizer arm of FIG. 1. FIG.
4 is a view for explaining a method of fixing the first arm portion and the second arm portion of the equalizer arm of FIG. 1; FIG.
FIG. 5 is a configuration diagram of a conventional window regulator.
[Explanation of symbols]
5 Lift Arm 6 Lift Arm Bracket 13 Equalizer Arm Bracket 110 Equalizer Arm 111 First Arm 115, 125 Bead 121 Second Arm

Claims (2)

A driven gear whose center of rotation is the center of the tip circle;
A lift arm having a proximal end fixed to the driven gear and a hole penetrating in the middle;
A lift arm bracket that is attached to the window glass and that extends in a direction that intersects with the opening and closing direction of the window glass, and that engages the tip of the lift arm with the guide;
It consists of a first arm part and a second arm part, and by connecting the first arm part and the second arm part through the hole of the lift arm, it can be rotated to the intermediate part of the lift arm, and An equalizer arm pivotally attached so as to intersect the lift arm in an X-shape, and the first arm portion engages with the lift arm bracket;
A guide parallel to the guide of the lift arm bracket is formed, and an equalizer arm bracket that guides the second arm portion of the equalizer arm with the guide;
In the window regulator that rotates the driven gear to rotate the lift arm and open and close the window glass,
The torsional stiffness and the vehicle width direction bend rigidity of the first arm portion of the equalizer arm are set to be smaller than the torsional rigidity and the vehicle width direction bend stiffness of the second arm portion. A featured window regulator. The outer shapes of the first arm part and the second arm part are substantially the same shape,
Forming beads having substantially the same planar shape at substantially the same positions of the first arm portion and the second arm portion;
The window regulator according to claim 1, wherein the height of the bead of the first arm portion is set lower than the height of the bead of the second arm portion.

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