JPH078055U - Seat adjuster - Google Patents

Abstract

(57) [Summary] [Purpose] The seat adjuster that was conventionally made of iron is formed of a lightweight material such as aluminum without increasing the size of the seat adjuster as a whole. In addition to saving labor, we will further reduce the width dimension. [Structure] A first side rail 20 fixed to a floor of a vehicle body is provided with a side wall 23 standing on a bottom plate 22, and a reinforcing portion 24 having a tubular cross-section is formed in the central portion of the side wall 23. A plurality of slits 2 are formed on the outer peripheral portion of the portion 24 in the longitudinal direction.
5, the upper and lower rails 2 are provided on the upper and lower portions of the reinforcing portion 24.
7 and 29 are provided, and the second side rail 21 movably provided on the first side rail 20 with the seat member fixed thereto is replaced with the side wall 23 of the first side rail 20.
Upper and lower bearings 31 and 33 into which upper and lower rails are inserted with bearing members 32 and 34 interposed respectively are formed in the upper and lower portions of the side wall 30 provided so as to face each other, and the seat member is fixed to the side wall 25. The bracket 35 is integrally formed, and the positioning member 38 having the claw 36 that engages with the slit 25 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat adjuster that is provided in a seat mounting portion of various vehicles such as passenger cars and that adjusts the position of the seat in the front-rear direction.

[0002]

[Prior art]

 As shown in FIG. 3, for example, in a general passenger car 1, between the floor 2 of the vehicle body and the seats 3 of the driver's seat and the passenger's seat, the position of the seat 3 is adjusted to the front or rear direction according to the body shape of the driver or the like. A seat adjuster 4 for adjusting the height of the seat is provided.

FIG. 4 shows a conventional seat adjuster 4 of this type. The seat adjuster 4 includes a lower rail 5 fixed to the floor of the vehicle body, and an upper rail 8 having a substantially U-shaped cross section provided on an upper surface 6 of the lower rail 5 via rollers 7 so as to be movable in the longitudinal direction of the vehicle body. A bracket 9 to which a seat (not shown) is fixed is fixed to the upper portion of the upper rail 8 by a bolt 9a. Further, both sides of the upper rail 8 bent downward are used as locking portions 12, and both sides of the lower rail 5 facing the locking portions 12 are bent upward to serve as holding portions 11. Has been done. The upper rail 8 is clamped between the locking portion 12 and the holding portion 11 from below by the locking portion 12 and from above by the holding portion 11 to move the upper rail 8 in the twisting direction and upward. Balls 13, 13 for controlling are arranged. The rollers 7 and the balls 13 are sandwiched by the upper and lower rails 8 and 5 from the opposite direction, thereby preventing the upper and lower rails 8 and 5 from rattling.

A lower bracket 14 having a substantially U-shaped cross section is fixed to the lower surface of the lower rail 5 by welding. One side portion of the lower bracket 14 is further bent upward in the longitudinal direction, and a plurality of positioning slits 15 ... Are bored in the lower portion of the side surface in the longitudinal direction. On the other hand, a positioning member 17 having a plurality of claws 16 engaging with the slit 15 is rotatably attached to the side surface of the upper rail 8 by a pin 18, and the positioning member 17 is rotated. By engaging this with the slit 15 at an appropriate position, the position of the seat in the front-rear direction is adjusted. The upper and lower rails 5 and 8 and the upper and lower brackets 9 and 14 that constitute the conventional seat adjuster 4 are all made of iron.

[0005]

[Problems to be solved by the device]

 In the conventional seat adjuster 4 as described above, since the constituent members are all made of iron, the weight of the member itself is large and more members are required, and these members are welded or bolted. Since it has to be assembled, there is a problem that the overall weight is further increased, and it has been desired to reduce the weight. However, if the lower bracket 14 is made of a lightweight member that is lighter than iron but inferior in strength at this time, the strength of the portion where the slits 15 are formed is significantly deteriorated, and the lower bracket is There is a problem that the strength of the ket 14 is insufficient, and its solution has been desired.

Further, since the seat adjuster 4 is made of iron, it is excellent in strength, but it is difficult to form it into a complicated shape, and bending and punching are at most difficult to process. Since it is inferior, a large number of members such as the upper and lower rails 5 and 8 and the upper and lower brackets 9 and 14 are required, and a great deal of labor is required for bending and welding each member, welding each member, bolting, and the like. There was a drawback. In addition, when forming the slit 15, due to processing restrictions, first, the slit 15 is punched on one side surface of the lower bracket 14 before bending, and then the side surface is formed at the position where the slit 15 is formed. Since it is necessary to bend upward, the strip-shaped portion between the slits 15, which is inferior in strength, is easily deformed, and it is difficult to maintain the dimensional accuracy between the slits 15.

Further, in the seat adjuster 4 described above, a pair of balls 13 and 13 are arranged on both sides of the roller 7, and the upper and lower rails 5 and 8 are formed in parallel in the lateral direction. Since it is sandwiched by the upper and lower surfaces, the pair of locking portions 12, and the holding portion 11, the dimension in the lateral width direction becomes large as a whole, which prevents the vehicle body to which the seat adjuster 4 is attached from being made compact in the lateral width direction. It was a cause.

[0008]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems, and a device according to claim 1 is a first side rail fixed to a floor of a vehicle body and a first side rail fixed to a seat member. A configuration is provided in which a second side rail movably provided on the side rail is provided, and the first side rail is formed on a bottom plate, a side wall erected on the bottom plate, and a central portion of the side wall. A reinforcing portion having a tubular cross-section and having a plurality of slits formed in the outer peripheral portion in the longitudinal direction, an upper rail formed on one side of the upper portion of the side wall, and an upper rail extending downward from the side wall. A lower rail that is provided below and faces upward; the second side rail is formed on a side wall that is provided so as to face the side wall of the first side rail; and on the upper side of the side wall. And the bearing member above An upper bearing through which the partial rail is inserted, a lower bearing formed at a lower portion of the side wall and through which the lower rail is inserted with a bearing member interposed therebetween, a bracket to which the seat member is fixed, and the above And a positioning member having a claw that engages with the slit.

Further, according to a second aspect of the invention, at least the first side rail of the first side rail and the second side rail according to the first aspect is integrally formed by extrusion molding of aluminum. It is molded.

[0010]

[Action]

 According to the invention of claim 1, a tubular reinforcing portion is integrally formed in the central portion of the first side rail in the longitudinal direction, and a slit is formed in the outer peripheral portion of the reinforcing portion. As a result, the strength around the slits is significantly increased, and even if a lightweight member that is inferior in strength to iron is used, the strength of the parts where the slits are formed will not deteriorate and the strength will not be insufficient. .

Further, since the upper and lower rails and the upper and lower bearings that receive the upper and lower rails are arranged in the vertical direction, it is possible to reduce the dimension of the entire seat adjuster in the lateral width direction and to make the entire vehicle body compact in the lateral width direction. It is advantageous in trying.

In addition, the force acting in the vertical direction is received by the two bearings, the upper bearing and the lower bearing, which is advantageous in terms of strength, and the upper rail and the lower rail are separated above and below the reinforcing portion. Since they are arranged so that a large rotational moment can be obtained with a small reaction force in the lateral direction against the load in the torsional direction that acts on the second side rail. Further, since the side walls of the first and second side rails, the upper and lower rails, and the upper and lower bearings form a tubular body having a substantially rectangular cross section, high rigidity can be obtained as a whole in terms of structure. As a result, it is possible to use a material that is lighter than iron for the first and second side rails without increasing the size of the seat adjuster as a whole, and to reduce the weight of the vehicle body.

According to the invention of claim 2, since at least the first side rail is integrally extruded and formed from aluminum having excellent workability, the operation is complicated in addition to the operation of claim 1. It is possible to easily and accurately mold various shapes, and thus it is possible to significantly reduce the weight of the seat adjuster as a whole and reduce the labor required for its manufacture.

[0014]

【Example】

 1 and 2 show an embodiment of a seat adjuster of the present invention. The seat adjuster includes a first side rail 20 integrally extruded from aluminum and a first side rail. The second side rail 21 is movably provided on the second side rail 21. The first side rail 20 has a flat bottom plate 22 fixed to the floor surface of the vehicle body by fixing members (not shown) attached to both ends, and a side wall 23 standing on the bottom plate 22. At the center of the side wall 23, a reinforcing portion 24 having a tubular cross section is formed in the longitudinal direction. A plurality of slits 25 are formed in the outer peripheral portion of the reinforcing portion 24 in the longitudinal direction. An upper rail 27 is formed on the upper portion of the side wall 23. The upper rail 27 extends horizontally and downwardly from the side wall 23 and has a bulged portion 26 having a substantially circular cross section at its tip. On the other hand, at a position of the bottom plate 22 facing the upper rail 27, a lower rail 29 extending upward and having a bulged portion 28 having a substantially circular cross section at the tip is formed.

On the other hand, the second side rail 21, to which a seat member (not shown) is fixed, has a side wall 30 facing the side wall 23 of the first side rail 20 at a predetermined interval. At the upper portion of the side wall 30, an upper bearing 31 is formed which opens upward and surrounds the bulging portion 26 of the upper rail 27. A bearing member 32 having a lubricity such as high molecular polyethylene is disposed on the inner peripheral surface of the upper bearing 31, and the bulging portion 26 of the upper rail 27 is inserted through the bearing member 32. Has been done. A lower bearing 33 is formed at the lower portion of the side wall 30 and opens downward to surround the bulging portion 28 of the lower rail 29. The lower bearing 33 has an inner peripheral surface having a similar polymer. A bearing member 34 having lubricity such as polyethylene is provided. The bulging portion 28 of the lower rail 29 is inserted into the lower bearing 33 with the bearing member 34 interposed therebetween. As described above, the second side rail 21 is movably provided with respect to the first side rail 20 via the bearing members 32 and 34.

Further, a bracket 35 to which a sheet member is fixed is integrally formed at an upper end portion of the side wall 30 of the second side rail 21, and a side surface of the bracket 35 has the slit 25 at the tip portion thereof. A positioning member 38, which has a claw 36 that engages with, and is pivotally supported by a pin 37, is fixed.

In such a seat adjuster, the claws 36 of the positioning member 38 provided on the second side rail 21 are engaged with and disengaged from the arbitrary slits 25 of the first side rail 20, so that the seat member in the vehicle body is Adjust the position in the front-back direction. Further, rivets (not shown) having heads protruding in opposite directions are threadedly provided as stoppers at both longitudinal end portions of the reinforcing portion 24 and the side wall 30 of the first and second side rails 20 and 21. This prevents the second side rail 21 from moving beyond the position where these rivets contact each other.

In the seat adjuster having the above-described configuration, a tubular reinforcing portion 24 is integrally formed in the central portion of the first side rail 20 in the longitudinal direction, and the outer periphery of the reinforcing portion 24 is formed. Since the slit 25 is formed in the portion, the strength around the slit 25 can be significantly increased. Therefore, even if the first side rail 20 is formed of a lightweight member having a lower strength than iron, There is no possibility that the strength of the portion where the slit 25 is formed deteriorates and the strength becomes insufficient.

Further, since the upper and lower rails 27, 29 and the upper and lower bearings 31, 33 for receiving the upper and lower rails are arranged in the vertical direction, the dimension of the entire seat adjuster in the lateral width direction can be reduced. The vehicle body to which the seat adjuster is attached can be made more compact in the lateral width direction.

Moreover, the vertical force acting on the first side rail 20 from the second side rail 21 is received by the two bearings, the upper bearing 31 and the lower bearing 33, which is advantageous in terms of strength. Since the upper rail 27 and the lower rail 29 are arranged above and below the reinforcing portion 24 so as to be spaced apart from each other, a small lateral reaction against a load in the torsional direction which acts on the second side rail 21. A large turning moment can be obtained by force. By the way, in this type of side adjuster, since a gate-shaped structure is formed by the seat and a pair of side adjusters attached to both sides of the seat, the bearing is laterally supported in each seat adjuster like a conventional seat adjuster. Even if it is not provided, there is no risk of being disadvantaged to the lateral load.

Further, in the seat adjuster described above, the side walls 23 and 30 of the first and second side rails 20 and 21 and the upper and lower rails 27 and 29 and the upper and lower bearings 31 and 33 which are separated by a predetermined gap. With this, since a tubular body having a substantially rectangular cross section is formed in the longitudinal direction, high rigidity as a whole can be obtained structurally. As a result, it is possible to use a material that is lighter than iron for the first and second side rails without increasing the size of the entire seat adjuster, and it is possible to reduce the weight of the vehicle body.

In addition, since the bulging portions 26 and 28 are formed at the tips of the upper and lower rails 27 and 29, respectively, the engagement state of these upper and lower rails 27 and 29 can be made more reliable. be able to.

Further, since the first and second side rails 20 and 21 are integrally extruded from aluminum having excellent workability, complicated shapes such as the reinforcing portion 24 and the bracket 35 can be easily formed. Since it can be integrally molded, it is possible to significantly reduce the weight of the entire seat adjuster and reduce the labor required for its manufacture. Moreover, since it is aluminum, the slits 25 ... Can be easily cut after the first side rail 20 is extrusion-molded, so that high dimensional accuracy between the slits 25 ... Can be maintained.

[0024]

[Effect of device]

 As described above, the seat adjuster of the present invention according to claim 1 is provided with the first side rail fixed to the floor of the vehicle body and the seat member fixed so as to be movable on the first side rail. A first side rail, a first side rail, a bottom plate, a side wall erected on the bottom plate, and a cylindrical cross section formed in a central portion of the side wall and an outer periphery. The reinforcement part has a plurality of slits formed in the longitudinal direction in the longitudinal direction, the upper rail is formed on the upper part of the side wall so as to hang down to one side, and the upper part is provided below the reinforcement part. A lower rail that faces the second side rail, the second side rail is provided on a side wall facing the side wall of the first side rail, and the second side rail is formed above the side wall, and a bearing member is interposed therebetween. Insert the above upper rail An upper bearing, a lower bearing formed in a lower portion of the side wall, into which the lower rail is inserted via a bearing member, a bracket to which the sheet member is fixed, and a claw that engages with the slit. Since the configuration including the positioning member is included, the overall weight of the seat adjuster can be significantly reduced and the lateral width can be reduced.

Further, according to a second aspect of the invention, at least the first side rail of the first side rail and the second side rail according to the first aspect is integrally formed by extrusion molding of aluminum. Since it is molded, members with complicated shapes can be easily and accurately integrally molded, which makes it possible to significantly reduce the weight of the entire seat adjuster and reduce the labor required for its manufacture.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a seat adjuster of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a schematic diagram showing a mounting state of a seat adjuster in an automobile.

FIG. 4 is a vertical sectional view showing a conventional seat adjuster.

FIG. 5 is a side view of FIG.

[Explanation of symbols]

 20 1st side rail 21 2nd side rail 22 Bottom plate 23, 30 Side wall 24 Reinforcement part 25 Slit 27 Upper rail 29 Lower rail 31 Upper bearing 32, 34 Bearing member 33 Lower bearing 35 Bracket 36 Claw 38 Positioning member

Claims (2)

[Scope of utility model registration request] 1. A first side rail fixed to a floor of a vehicle body and a second side rail fixed to a seat member and movably provided on the first side rail. The first side rail has a bottom plate fixed to the floor, a side wall erected on the bottom plate, a tubular cross section formed in a central portion of the side wall, and a longitudinal direction on an outer peripheral portion. A reinforcing portion having a plurality of slits formed therein, an upper rail formed on the upper portion of the side wall so as to hang down to one side, and a lower rail provided below the reinforcing portion and facing upward. The second side rail has a side wall provided to face the side wall of the first side rail and an upper part of the side wall, and the upper rail is inserted through a bearing member. The upper bearing and the lower part of the side wall A lower bearing through which the lower rail is inserted via a bearing member, a bracket to which the sheet member is fixed, and a positioning member having a claw that engages with the slit, the first side The above-mentioned second in any slit of the rail
A seat adjuster characterized by adjusting the position of the seat in the front-rear direction by engaging and disengaging a positioning member provided on the side rail of the seat. 2. The first side rail among the first side rail and the second side rail, at least the first side rail is integrally formed by extrusion molding of aluminum. The described seat adjuster.