JPH07180435A - X arm of door glass lifting gear - Google Patents

Abstract

PURPOSE:To keep off any motion as well as to eliminate a clearance according to each individual component accuracy. CONSTITUTION:In the case of an X arm which makes both first and second sub-arms 20 and 21 unitized by joining the ends themselves in a circular hole 24 formed in an intermediate position of a main arm 19, be free of rotation with the circular hole 24 as the center, a pair of sliding parts 26 and 30 provided with two partially circular outer circumferential surfaces 26a and 30a being orthogonally bent at each opposed position holding a center point of the circular hole 24 with each other, and coming into surface contact each with an end face of the circular hole 24, are installed in each end of both these first and second sub-arms 20 and 21. As these outer circumferential surfaces 26a and 30a come into surface contact with the end face of the circular hole 24, even if they are repeatedly rubbed, the rate of being worn out is trifling, so that any lost motion is hard to occur. In addition, since the sliding part 26 and 20 are formed at each opposed position holding the center point of the circular hole 24, if there is some variations in the size of this hole 24, these sliding parts 26 and 30 are joined together after being pressed to the end face of the circular hole 24, whereby any clearance can be prevented from occurring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X arm of a door glass lifting device.

[0002]

2. Description of the Related Art As an X-arm of a conventional door glass lifting device, for example, those shown in FIGS. 5 to 7 are known (September 1983, Automotive Engineering Handbook published by Japan Society of Automotive Engineers). (See p. 1-14, p. 15 of Part 6).

The door 1 is provided with a door glass lifting device 3 for vertically moving the door glass 2. this,
The door glass lifting device 3 has a glass bottom channel 4
And an arm guide channel 5, a guide rail 6, an X arm 7, and a handle 8. X arm 7
Is composed of a main arm 9 and a sub arm 10. The upper ends of the main arm 9 and the sub arm 10 are slidably engaged with the glass bottom channel 4, and the lower end of the sub arm 10 is slidably engaged with the arm guide channel 5. . A rack 11 is formed at the lower end of the main arm 9, and the rack 11 is a pinion 12 of the handle 8.
By engaging with and rotating up and down, the X arm 7 is deformed and the door glass 2 moves up and down.
The guide rail 6 guides the pin 13 formed on the door glass 2 and imparts a constant angle to the door glass 2.

The main arm 9 and the sub-arm 10 constituting the X arm 7 can rotate about a circular hole 14 formed at an intermediate position of the main arm 9. That is, the sub arm 10 is the upper first
It is composed of a sub-arm 15 and a second sub-arm 16 on the lower side, and circular embossed portions 17 and 18 which enter the circular hole 14 are formed at respective ends thereof, and the embossed portions 17 and 18 are joined to each other. The sub arm 10 is rotatable about the embossed portions 17 and 18 in the circular hole 14. The embossed portions 17 and 18 have inclined surfaces 17a and 18a on the side surfaces, which are trapezoidal in cross section, due to the convenience of the press mold.

[0005]

However, in such a conventional technique, when the sub arm 10 is rotated with respect to the main arm 9, the edge portion 1 of the circular hole 14 is formed.
Only 4a is the inclined surface 17a, 18 of the embossed portion 17, 18.
Since it slides on a (see FIG. 7), this edge portion 14a is worn, and a gap is gradually formed between the circular hole 10 and the embossed portions 17 and 18, which causes rattling when the door glass 2 is moved up and down. Becomes

Further, the embossed portion 1 whose dimensions are fixed to each other
Since the rotation fulcrum of the X arm 7 is formed by engaging the holes 7 and 18 with the circular hole 14, the embossed portions 17 and 18 and the circular hole 14 are caused due to a dimensional error of one of the parts at the initial stage of assembly. If there is a gap between and, there is no means to eliminate the gap.

The present invention has been made by paying attention to such a conventional technique, and provides an X-arm of a door glass lifting device which does not cause rattling and can eliminate a gap according to the accuracy of individual parts. To do.

[0008]

In order to achieve the above object, an X-arm of a door glass lifting device according to the present invention is provided with an end portion of a first sub-arm and an end portion of a second sub-arm.
The pair of sliding portions are formed by bending at right angles at positions facing each other with the center point of the circular hole therebetween, and forming partial arc-shaped outer peripheral surfaces that are in surface contact with the end surfaces of the circular hole.

[0009]

According to the present invention, since the respective sliding portions formed on the first sub-arm and the second sub-arm have the partial arcuate outer peripheral surfaces that are in surface contact with the end faces of the circular holes, the sliding portions are formed. Even if the outer peripheral surface and the end surface of the circular hole are repeatedly rubbed, the ratio of abrasion is smaller than that of the conventional edge portion, and thus rattling is less likely to occur.

Further, since the sliding portions are formed at the opposite positions with the center point of the circular hole facing each other, each sliding portion is pressed against the end surface of the circular hole even if the dimensions of the circular hole vary. By joining afterwards, it is possible to prevent the formation of a gap.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to FIGS.
It will be described based on. It should be noted that the description overlapping with the conventional one is omitted.

Reference numeral 19 is a main arm, 20 is a first sub-arm, and 21 is a second sub-arm. The first sub-arm 20 and the second sub-arm 21 form a sub-arm 22, and the sub-arm 22 and the main arm 19 form an X-arm 23.

A circular hole 24 similar to the conventional one is formed in the main arm 19.
Are formed. An approximately fan-shaped embossed portion 25 is formed at an end of the first sub-arm 20. The end side of the embossed portion 25 has a circular hole 24 in the main arm 19.
A semicircular side surface portion (sliding portion) 26 having a diameter corresponding to the above and concentric with the center point S of the circular hole 24 is bent at a right angle. In the above and below, the term "semi-circular" or "arc-shaped" means all semi-circles or arcs concentric with the center point S of the circular hole 24.

The outer peripheral surface 26a of the side surface portion 26 is completely perpendicular to the surface of the first sub-arm 20, and has a degree of curvature that perfectly matches the circular hole 24. In addition, the side surface portion 27 on the opposite side of the embossed portion 25 is inclined in consideration of press formability. Furthermore, the first sub-arm 20
The edge 28 on the most terminal side has a partially arcuate shape, and this edge 28 is bent toward the main arm 19 side. A bead portion 29, which is also in the shape of a partial arc, is formed on the opposite side of the embossed portion 25 toward the main arm 19 side.

On the other hand, a semicircular flange (sliding part) 30 corresponding to the circular hole 24 is bent and formed at a right angle at the end of the second sub-arm 21. Outer peripheral surface 3 of this flange 30
0a is also a right angle with respect to the surface of the second sub-arm 21, and has a curvature that perfectly matches the circular hole 24. The flange 30 and the side surface portion 2 of the embossed portion 25
6 is in a position of facing each other across the center point S of the circular hole 24. This flange 30 has two notches 31
Is formed, and two extension pieces 32 extending from the notch 31 in the radial direction are formed. The tip 32a of the extension piece 32 corresponds to the bead portion 29 of the first sub-arm 20, and is bent and formed toward the main arm 19 side. In addition, the first sub-arm 21 of the first
A partially arcuate bead portion 33 is formed toward the main arm 19 at a position corresponding to the edge portion 28 of the sub arm 20.

Next, how to attach the first sub-arm 20 and the second sub-arm 21 to the main arm 19 will be described. First, the embossed portion 25 of the first sub-arm 20,
Each of the flanges 30 of the second sub arm 21 has a circular hole 24.
Insert it inside. At this point, the main arm 19 moves between the bead portion 29 and the extension piece 32, and between the edge portion 28 and the bead portion 3.
Between 3 is sandwiched. Therefore,
The first sub-arm 20 and the second for the main arm 19
The contact area of the sub arm 21 is reduced, and sliding resistance at the time of rotation is reduced. Next, the first sub-arm 20 and the second sub-arm 21 are connected to the respective outer peripheral surfaces 2
6a, 30a are slid in the direction of pressing the end face of the circular hole 24, and the spots P at three places are welded with the outer peripheral surfaces 26a, 30a closely contacting the end face of the circular hole 24 without any gap. As a result, the first sub-arm 20 and the second sub-arm 21 are integrated to form the linear sub-arm 22.

According to the sub-arm 22 of this embodiment,
Since the side surface portion 26 as a "sliding portion" and the outer peripheral surfaces 26a and 30a of the flange 30 are at right angles, the outer peripheral surfaces 26a and 30a are in surface contact with the end surface of the circular hole 24. Therefore, the outer peripheral surface 26a,
Even if 30a and the end surface of the circular hole 24 are repeatedly rubbed, the ratio of abrasion is smaller than that of the conventional edge portion, and thus rattling is less likely to occur. Further, as described above, since the side surface portion 26 and the flange 30 are respectively formed at the facing positions across the center point S of the circular hole 24, even if there is some variation in the size of the circular hole 24. , For each main arm 19, the outer peripheral surfaces 26a, 30a of the sub-arm 22 are formed into the circular holes 2
Since it is pressed against the end surface of No. 4 and then welded, no gap is created between the outer peripheral surfaces 26a and 30a and the end surface of the circular hole 24 from the initial stage of assembly.

In the above embodiment, the first sub-arm 2
The example in which the embossed portion 25 is formed at 0 and the flange 30 is formed at the second sub-arm 21 has been shown, but they may be reversed.
Further, both the first sub-arm 20 and the second sub-arm 21 may be flanges 30. Furthermore, both the first sub-arm 20 and the second sub-arm 21 may be embossed portions 25. In that case, however, both embossed portions 25 need to be inserted into the circular holes 24, so the size of each embossed portion 25 is changed. Need to be small.

[0019]

EFFECT OF THE INVENTION X of the door glass lifting device according to the present invention
The arm has the contents described above,
Since each sliding portion formed on the first sub-arm and the second sub-arm has a partial arcuate outer peripheral surface that makes surface contact with the end surface of the circular hole, the outer peripheral surface of the sliding portion and the end surface of the circular hole are Even if it is repeatedly rubbed, the ratio of abrasion is smaller than that of the conventional edge portion, so rattling is less likely to occur.

Further, since the sliding portions are formed at the opposite positions with the center point of the circular hole facing each other, even if the diameter of the circular hole varies, each sliding portion is pressed against the end surface of the circular hole. By joining afterwards, it is possible to prevent the formation of a gap.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a structure around a circular hole of an X arm according to an embodiment of the present invention.

FIG. 2 is a plan view showing a circular hole of a main arm.

FIG. 3 is a plan view showing an end portion of a first sub arm.

FIG. 4 is a plan view showing an end portion of a second sub arm.

FIG. 5 is a side view showing an X arm of a conventional door glass lifting device.

6 is a cross-sectional view taken along the line SA-SA shown in FIG.

FIG. 7 is an enlarged cross-sectional view of a DA portion indicated by an arrow in FIG.

[Explanation of symbols]

 9 Main Arm 20 First Sub Arm 21 Second Sub Arm 23 X Arm 24 Circular Hole 26 Side Part (Sliding Part) 26a, 30a Outer Surface 30 Flange (Sliding Part) S Center Point of Circular Hole

Claims (1)

[Claims] 1. A first sub-arm and a second sub-arm located on both sides of the circular hole in a circular hole formed at an intermediate position of the main arm.
The first sub-arm and the second sub-arm, which are integrated by joining the ends of the sub-arms and joining the ends,
In an X arm of a door glass lifting device which is rotatable around the circular hole, an end portion of the first sub-arm and an end portion of the second sub-arm,
It is characterized in that a pair of sliding portions are formed by being bent at right angles at positions facing each other with respect to the center point of the circular hole, and forming partial arc-shaped outer peripheral surfaces that are in surface contact with the end surfaces of the circular hole. X-arm for door glass lifting device.