JP4132836B2 - Stabilizer mounting structure for seat lifter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stabilizer mounting structure for reinforcing a seat lifter for adjusting the height of a seat disposed in a vehicle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a seat lifter used in a vehicle, one configured as shown in FIG. 4 is known. In this seat lifter, the link 103 is swingably attached to the four support holes 102 provided in front of and behind the upright walls of the left and right sliders (upper rails) 101, and the two front and rear links 103 on the right side swing. As a result, the lower right frame 104 of the seat lifter is supported so as to move up and down, and the left lower frame 105 of the seat lifter is supported so as to move up and down by swinging the two front and rear links 103. Further, both ends of the connecting rod 107 are connected to the link 103 on the left rear side and the gear 106 provided to be swingable around the horizontal axis, and the gear 108 meshing with the gear 106 is operated by the rotation operation unit 109. Then, each of the four links 103 is configured to swing through the left and right sliders 101 and the rear stabilizer 110 spanned between the two links 103 on the rear side. In addition, 101a in FIG. 4 is a lower rail which supports the slider 101 so that sliding is possible.
[0003]
Further, both ends of the front stabilizer 111 are inserted into the rotation shafts of the two front links 103, and the structure thereof is shown in FIGS. These drawings show one side, and a bearing 112 is attached to the end of the cylindrical front stabilizer 111 by welding, and this bearing 112 is attached to the support hole 102 of the slider 101 and the shaft hole 103a of the link 103. The bolt 113 is screwed from the outside.
[0004]
[Problems to be solved by the invention]
Therefore, in the case of the mounting structure of the front stabilizer provided in the conventional seat lifter, the number of parts is large, the cost is high, and the weight is heavy. In addition, since there is a backlash generating element between the bearing 112 and the support hole 102 of the slider 101 and the shaft hole 103a of the link 103, there is a possibility that a large backlash may occur.
[0005]
The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to provide a stabilizer mounting structure in a seat lifter capable of reducing cost and weight and reducing backlash. And
[0006]
[Means for Solving the Problems]
The stabilizer mounting structure in the seat lifter according to the present invention is a stabilizer mounting structure that connects the left and right base members (101) of the seat lifter and supports the lift link (103) so as to be swingable. part (5) caulking portion between (3), the large-diameter support portion pressing portion (4b), a fixed portion stepped supporting portion formed of a crimping section end thin support part and (4a) ( 4) , and a stabilizer mounting portion (2) is provided on the pressing portion side or the caulking portion side of the fixing portion (4) , and a circumferential groove (6) is provided in the stabilizer mounting portion (2 ). Is formed , and includes a bearing (1) made of an integrally molded product integrally including the pressing portion (5), the caulking portion (3), the fixing portion (4), and the stabilizer mounting portion (2), and the base member ( 101) The raised portion (3a) which is supported by inserting the small diameter support portion (4a) into the support hole (102) formed in the support hole (102) and the crimped portion (3 ) and the stepped portion of the stepped support portion ( is sandwiched between 4c), and said link (103) is a base member (101) and the pressing portion in a state of inserting a shaft hole formed thereto (the large-diameter support portion 103a) (4b) ( 5) , and the stabilizer mounting portion (2) is inserted into one end portion of the stabilizer (111) having at least an end formed in a cylindrical shape, and the end portion of the stabilizer. Is crushed and enters the groove (6) to prevent it from coming off.
[0007]
In this structure, since the bearing has a caulking portion that becomes a raised portion by caulking, and the conventional bolt can be omitted, the number of parts can be reduced, and the cost and weight can be reduced. Further, since the base member is sandwiched between the raised portion and the stepped portion of the stepped support portion, and is supported without gaps by the small diameter support portion expanded by caulking at the time of forming the raised portion, there is no play. Since the generation element is reduced only between the link and the large-diameter support portion, the play is reduced. Furthermore, since the stabilizer is crushed so that the end portion enters the groove and is attached to the stabilizer attachment portion, there is an advantage that the welding work can be eliminated.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described.
[0009]
FIG. 1 is a sectional view showing a stabilizer mounting structure in a seat lifter of the present embodiment, FIG. 2 is an exploded perspective view showing a state before the stabilizer is attached, and FIG. 3 is a sectional view showing a bearing.
[0010]
As shown in FIG. 4, the stabilizer mounting structure of the seat lifter includes a front stabilizer 111 that connects upright walls of left and right sliders (upper rails) 101 as base members and supports the link 103 so as to be swingable. As shown in FIG. 1, the bearing 103 attached to the end portion of the stabilizer 111 is configured to be swingably supported by the slider 101 with a bearing 1.
[0011]
As shown in FIG. 3, the bearing 1 is provided with a stabilizer mounting portion 2, a caulking portion 3, a stepped support portion 4 and a pressing portion 5 in this order from one end side, and the caulking portion 3 excluding the stabilizer mounting portion 2, the step The attached support part 4 and the pressing part 5 constitute a fixing part 7. That is, the stabilizer mounting portion 2 is provided on one side of the fixing portion 7 (left side of the caulking portion 3). The caulking portion 3 is formed in a cross-sectional wedge shape in which the outer edge side protrudes toward the stabilizer mounting portion 2 side from the inner side, and a groove 6 is formed in the stabilizer mounting portion 2 along the circumferential direction. Further, the stepped support portion 4 is formed with a small diameter support portion 4a on one end side and a large diameter support portion 4b on the other end side, and a stepped portion 4c is formed between the support portions 4a and 4b.
[0012]
The bearing 1 is attached to the end of the stabilizer 111 as shown in FIG. Specifically, the link 103 is arranged outside the slider 101 and the support hole 102 provided in the slider 101 and the shaft hole 103a provided in the link 103 are formed concentrically. Insert from the side. At this time, the slider 101 is not fixed to the lower rail (not shown). As for the bearing 1, the large-diameter support portion 4 b is located inside the shaft hole 103 a, the small-diameter support portion 4 a is located inside the support hole 102, and the caulking portion 3 is located inside inward and outward from the support hole 102. The dimension of each part of the bearing 1 is set so that it may be located.
[0013]
Thereafter, the other end side of the bearing 1 is fixed, and the caulking portion 3 is caulked by applying a force from one end side to the other end side. For this operation, for example, it is preferable to use a “caulking machine” configured to move the pipe in which the stabilizer mounting portion 2 is moved with a large load. As a result, the caulking portion 3 spreads outward as shown by the broken line in FIG. 3, and the slider 101 is sandwiched between the raised portion 3a and the stepped portion 4c. Further, with the formation of the raised portion 3a, the small diameter support portion 4a expands in diameter and comes into contact with the inner surface of the support hole 102 so that there is no gap. In this state, the slider 101 is supported by the small diameter support portion 4a. That is, the slider 101 is supported without any play by the small diameter support portion 4a. Further, the link 103 is swingably supported by the large-diameter support portion 4b while being sandwiched between the slider 101 and the pressing portion 5. At this time, the length dimension in the axial length direction of the large-diameter support portion 4 b is preferably set slightly longer than the thickness dimension of the link 103 so that the link 103 can swing.
[0014]
Thereafter, the end of the stabilizer 111 having at least both ends formed in a cylindrical shape is inserted into the stabilizer mounting portion 2, and the end of the stabilizer 111 is crushed into a shape along the groove 6 by applying external force from the outside. Thus, one end side of the stabilizer 111 is fixed to one slider 101 via the bearing 1. After that, by attaching the bearing 1 to the other end side of the stabilizer 111 in the same manner as before, the other end side of the stabilizer 111 is fixed to the other slider 101. Thereafter, the two sliders 101 connected by the stabilizer 111 are attached to each lower rail (not shown), so that the seat lifter of the present embodiment is fixed to the vehicle body.
[0015]
Therefore, in the case of the mounting structure of the present embodiment, the bearing 1 has the caulking portion 3 that becomes the raised portion 3a by caulking, and the conventional bolt can be omitted. Therefore, the number of parts can be reduced and the cost can be reduced. And weight reduction. Further, the slider 101 is sandwiched between the raised portion 3a and the stepped portion 4c of the stepped support portion 4, and is supported without a gap on the small diameter support portion 4a that has been expanded by caulking when the raised portion 3a is formed. Therefore, the backlash generation element is reduced only between the link 103 and the large-diameter support portion 4b, and the backlash is reduced. Furthermore, since the stabilizer 111 is crushed so that the edge part may enter into the groove | channel 6, and it is attached to the stabilizer attachment part 2, there exists an advantage that a welding operation can be made unnecessary.
[0016]
In the above-described embodiment, an example in which the link 103 is arranged outside the slider 101 is shown. However, the present invention is not limited to this, and the present invention is also applicable to the case where the link 103 is arranged inside the slider 101. Can do. In this case, as shown in FIG. 3, the pressing portion 5 of the fixing portion 7 is located on the opposite side of the bearing 1 provided with the stabilizer mounting portion 2 on the caulking portion 3 side of the fixing portion 7, that is, as shown in FIG. The bearing 1A provided with the stabilizer mounting portion 2 on the side is used, and the caulking portion 3 is disposed so as to be positioned outside the slider 101.
[0017]
Moreover, although applied to the front side stabilizer shown in FIG. 4 in embodiment mentioned above, this invention is not limited to this. For example, if the stabilizer on the rear side of the seat lifter is configured in the same way as the stabilizer on the front side and connects the left and right sliders (base members) to support the link in a swingable manner, not only the front side The present invention can also be applied to the rear stabilizer. In short, the present invention can be applied to the stabilizer mounting structure as long as the stabilizer is provided so as to connect the left and right base members of the seat lifter and support the lift link so as to be swingable. .
[0018]
In the above-described embodiment, the present invention is applied when the base member is a slider that slides in the front-rear direction. However, the present invention is not limited to this, and can be similarly applied when the base member does not slide.
[0019]
【The invention's effect】
As described above in detail, in the case of the present invention, since the bearing has a caulking portion that becomes a raised portion by caulking, and the conventional bolt can be omitted, the number of parts is reduced, the cost is reduced, and Light weight can be achieved. Further, since the base member is sandwiched between the raised portion and the stepped portion of the stepped support portion, and is supported without gaps by the small diameter support portion expanded by caulking at the time of forming the raised portion, there is no play. Since the generation element is reduced only between the link and the large-diameter support portion, the play is reduced. Furthermore, since the stabilizer is crushed so that the end portion enters the groove and is attached to the stabilizer attachment portion, there is an advantage that the welding work can be eliminated.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a stabilizer mounting structure of a seat lifter according to an embodiment.
FIG. 2 is an exploded perspective view showing a state before the stabilizer is attached in the seat lifter of the present embodiment.
FIG. 3 is a cross-sectional view showing a bearing used in the present embodiment.
FIG. 4 is a perspective view showing a conventional seat lifter.
FIG. 5 is a cross-sectional view showing a stabilizer mounting structure in a conventional seat lifter.
FIG. 6 is an exploded perspective view showing a state before mounting a stabilizer in a conventional seat lifter.
FIG. 7 is a cross-sectional view showing another type of bearing that can be used in the present invention.
[Explanation of symbols]
1, 1A Bearing 2 Stabilizer mounting portion 3 Caulking portion 4 Stepped support portion 4a Small diameter support portion 4b Large diameter support portion 4c Stepped portion 5 Holding portion 6 Groove 7 Fixed portion 101 Slider (upper rail)
102 Support hole 103 Link 103a Shaft hole 111 Front stabilizer

Claims (1)

A stabilizer mounting structure that connects the left and right base members (101) of the seat lifter and supports the lift link (103) in a swingable manner.
A stepped support portion is formed between the presser portion (5) and the caulking portion (3) that are separated from each other, with the presser portion side being a large diameter support portion (4b) and the caulking portion side being a small diameter support portion (4a). fixed portion having a (4), and the fixing portion (4) with the stabilizer mounting portion in the pressing portion or the caulking portion (2) is provided with the stabilizer mounting portion in the circumferential direction of (2) of A groove (6) is formed, and includes a bearing (1) made of an integrally molded product integrally including the pressing portion (5), the caulking portion (3), the fixing portion (4), and the stabilizer mounting portion (2) .
The base member (101) is supported by inserting the small-diameter support portion (4a) into the support hole (102) formed in the base member ( 102) , and is stepped with a raised portion (3a) formed by caulking the caulking portion (3). The base member is sandwiched between the stepped portion (4c) of the support portion, and the link (103) is inserted into the shaft hole (103a) formed in the large diameter support portion (4b). (101) and the holding portion (5) are supported so as to be swingable, and the stabilizer mounting portion (2) is inserted into one end portion of the stabilizer (111) having a cylindrical shape at least at the end portion. The stabilizer mounting structure in the seat lifter is characterized in that the stabilizer end portion is crushed and enters the groove (6) to prevent it from coming off.

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