JPH0653272U - Car seat - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the trim from being caught in the joint between the seat bottom and the seat back. [Structure] In a vehicle seat 1 in which a seat back 12 which is a backrest is rotatably coupled to a seat bottom 11 which is a seat by rotating around a stepped bolt 2 and which is provided so as to project from a frame of the seat bottom 11. The stepped bolt 2 is provided so as to penetrate the seat bottom side bracket 3, the trim 15 of the seatback 12, and the seatback side bracket 4 projecting from the seatback 12. Between the seat bottom side bracket 3 and the seat back side bracket 4, a bush 5 composed of a body portion 51 and a flange 52 formed on one side portion of the body portion 51 is provided with a bush 52 that connects the flange 52 to the seat back side bracket 4. The bush 5 is fitted so as to come into contact with
1 penetrates the through hole 15 a of the trim 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle seat having a seat back support system in which a trim bit is not caught.

[0002]

[Prior art]

 Conventionally, a vehicle seat as illustrated in FIG. 4 is known. The seat 1 includes a seat bottom 11 as a seat and a seat back 12 as a backrest. The seat bottom 11 and the seat back 12 are connected to each other at their base end portions via stepped bolts 2 which are horizontal shafts. That is, the stepped bolt 2 is inserted into the seat bottom side bracket 3 provided at the base end portion of the seat bottom 11, and the stepped bolt 2 pivotally supports the base end side of the seat back 12. Therefore, the seat back 12 is rotatable around the stepped bolt 2 and can be folded on the seat bottom 11.

FIG. 5 is a partially cutaway sectional view of a portion of the conventional vehicle seat 1 supporting the seat back 12. As shown in the figure, the seat back 12 includes a seat back side frame 13 as a skeleton, a cushion material 14 surrounded by the frame 13, and a trim 15 that covers the frame 13 and the cushion material 14 from the surface. It consists of and.

A seat back bracket 4 is provided on the lower side of the seat back side frame 13, and a through hole 41 for passing the stepped bolt 2 is formed in the bracket 4. Has been done. The stepped bolt 2 is passed through a through hole 31 formed in the seat bottom bracket 3, a through hole 15a formed in the trim, and a through hole 41 formed in the seat back bracket 4. The seat back 12 is rotatably supported around the stepped bolt 2 in a state where the nut 23 is screwed to the threaded portion 22 at the tip thereof.

Further, the through hole 15 a of the trim 15 is located on the body portion 21 of the stepped bolt 2 which is not screwed, and the left end of the body portion 21 is in contact with the front surface of the seat back bracket 4. It is in a stopped state.

[0006]

[Problems to be solved by the device]

 By the way, in the conventional support method for the seat back 12 as described above, when the seat back 12 is assembled to the seat bottom 11 via the stepped bolt 2, the trim 15 around the through hole 15a is provided with the stepped bolt 2. It was often caught between the step portion at the tip of the body portion 21 and the seat back bracket 4. When the above assembling operation is completed in the state where such biting occurs, the stepped bolt 2 is firmly fastened by the nut 23, and therefore the trimmed trim 15 is removed from the biting state. Since it is difficult to release the seat back 12, the trim 15 is often damaged by rotating the seat back 12 around the stepped bolt 2 in such a state.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle seat having a seat back support system in which the trimming does not occur.

[0008]

[Means for Solving the Problems]

 The vehicle seat according to claim 1 of the present invention is a vehicle seat in which a seat back, which is a backrest, is foldably connected to a seat bottom, which is a seat, by rotating around a horizontal axis and is a frame of the seat bottom. The horizontal axis is provided so as to pass through the seat bottom side bracket protruding from the seat back trim, the seat back trim, and the through holes formed in the seat back side brackets formed on both sides of the seat back. A bush having a flange on one side of the cylindrical body is externally fitted to this horizontal shaft, and the outer diameter of the flange is formed larger than the diameter of the through hole of the trim on this bush. Is abutted against the seat back side flange, and the torso part is installed with both the trim and the seat bottom side bracket passing through the through holes. It is characterized in.

[0009]

[Action]

 According to the vehicle seat of the above-mentioned claim 1, the bush having the flange is fitted on the horizontal shaft, the end face of the flange is in contact with the seat back side flange, and the body portion has the trim and the seat back. It is attached to the horizontal shaft while penetrating through the through hole with the side bracket, and the through hole of the trim is fitted in the body of such a bush, and the outer diameter of the flange is smaller than that of the through hole of the trim. However, if the bush body is fitted into the through hole of the trim in advance when assembling the seat back to the seat bottom, this bush will have a positioning function during horizontal axis mounting operation. The flange is provided on the side of the bush, and prevents the trim from falling off the bush.

As a result, the operation of assembling the seat back to the seat bottom is facilitated, and the trim is not caught between the bracket on the seat back side and the horizontal shaft. The pivoting action does not damage the trim.

[0011]

【Example】

 FIG. 1 is a partially cutaway exploded perspective view showing an example of a connecting portion between a seat bottom and a seat back of an automobile seat according to the present invention. Since the basic structure of the seat 1 including the seat bottom 11 and the seat back 12 is the same as that shown in FIG. 4, the illustration thereof is omitted.

As shown in FIG. 4, a vehicle seat according to the present invention has a seat back 12 which is a backrest, and a seat bottom 11 which is a seat, and can be folded by rotating around a stepped bolt 2 as a horizontal axis. Intended for those that are possibly combined. In such a sheet 1, as shown in FIG. 1, the stepped bolt 2 includes a seat bottom side bracket 3 protruding from a frame (not shown) of the seat bottom 11, a trim 15 of the seat back 12, and It is set so as to penetrate through the through holes 41 formed in the seat back bracket 4 formed on both sides of the seat back 12.

A bush 5 having a flange 52 on one side of the tubular body 51 is externally fitted to the stepped bolt 2, and the bush 5 has the outer diameter of the flange 52 trimmed. The through hole 15a has a diameter larger than that of the through hole 15a, the end surface of the flange 52 abuts the seat back side flange 4, and the body portion 51 penetrates both the through hole of the trim 15 and the seat bottom side bracket 3. It is installed in.

Hereinafter, the vehicle seat 1 according to the present invention, which is basically configured as described above, will be described in detail with reference to the embodiments shown in FIGS. 1 to 4. First, as shown in FIG. 1, an inclined portion 13a is formed on the lower side portion of the seatback side frame 13, and a fixed seatback bracket 4 is fixed to the inclined portion 13a so as to be bent into an L shape in a plan view. Has been done. The locking surface 42 of the seatback bracket 4 is set to face the vehicle width direction, and a through hole 41 is bored in the locking surface 42.

The stepped bolt 2 as a horizontal shaft for pivotally supporting the seat back 12 is composed of a body portion 21 and a small-diameter threaded portion 22 extending at the tip of the body portion 21. A step portion 21 a is formed at a boundary portion of the body portion 21 with the screwed portion 22. A nut 23 is screwed onto the threaded portion 22 while the seat back 12 is supported by the stepped bolt 2.

A bush 5 is fitted into such a stepped bolt 2. The bush 5 is composed of a tubular body portion 51 and a flange 52 which is provided on a side portion thereof so as to project in an annular shape. The diameter of the through hole 53 of the bush 5 is set so that it can be fitted into the body portion 21 of the stepped bolt 2, and the length of the bush 5 is the length of the body portion 21 of the stepped bolt 2. Is set to the same.

A through hole 15 a is formed in a side portion of the trim 15 which covers the seatback side frame 13 from the surface. The diameter of the through hole 15a is set to be substantially the same as the diameter of the body portion 51 of the bush 5. Therefore, when the body portion 51 of the bush 5 is inserted into the through hole 15a of the trim 15, the trim 15 is blocked by the flange 52 so as not to come out from the left side portion of the bush 5.

Further, a through hole 31 is formed in the tip end portion of the seat bottom side bracket 3 protruding from the base end portion of the seat bottom 11 (not shown in FIG. 1). The diameter of the through hole 31 is set so that the body portion 51 of the bush 5 can be fitted therein.

At the disassembled connection portion between the seat bottom 11 and the seat back 12 shown in FIG. 1 made of such components, the stepped bolt 2 is connected to the through hole 15 a of the trim 15 and the bush as shown by the alternate long and short dash line. 5, the through hole 53 of the seat bottom side bracket 3 and the through hole 41 of the seat back bracket 4 are inserted into the through hole 53 of FIG. As shown in FIG. 3, which is a sectional view taken along the line AA of FIG. 2, the seat back 12 is in a state of being axially supported by the stepped bolt 2.

In the vehicle seat of the present invention, as described above in detail, the seat bottom 11 and the seat back 12 are connected by the stepped bolt 2 with the bush 5 interposed. Then, as shown in FIG. 3, the right side portion of the body portion 51 of the bush 5 is fitted into the through hole 31 of the seat bottom side bracket 3 and is abutted against the head portion of the stepped bolt 2 to make the bush 5 The flange 52 protruding from the left side portion is in a state of abutting against the seat back bracket 4.

Since the through hole 15 a of the trim 15 is inserted through the body portion 51 of the bush 5 arranged in this way, the trim 15 is blocked by the flange 52 and never contacts the seat back bracket 4. Therefore, the trim 15 is not provided between the seat back bracket 4 and the stepped portion 21a of the stepped bolt 2 shown in FIG. 1, which often occurs when the seat back 12 is assembled to the seat bottom 11. Does not bite, and as a result of the above-mentioned assembly being completed with such biting still occurring, damage to the trim 15 caused by rotating the seat back 12 around the stepped bolt 2 is effectively performed. Can be prevented.

Further, when the seat back 12 is assembled to the seat bottom side bracket 3, if the body portion 51 of the bush 5 is inserted into the through hole 15 a of the trim 15 in advance, the step bolt 2 is inserted by the bush 5. Positioning for threading can be performed easily, which can greatly contribute to speeding up the assembly operation.

[0023]

[Effect of device]

 As described above, the vehicle seat of the present invention is a vehicle seat in which the seat back, which is a backrest, is foldably connected to the seat bottom, which is a seat, by rotating around the horizontal axis. A bushing with a flange is fitted into the bushing, and the bushing is attached to the horizontal shaft while the end face of the flange is in contact with the seatback side flange and the body part has penetrated the through hole of the trim and seatback side bracket. The trim through-hole is fitted in the body of the bush, and the outer diameter of the flange is set to be larger than the hole diameter of the through-hole in the trim.

Therefore, when the seat back is assembled to the seat bottom, if the body portion of the bush is fitted in the through hole of the trim in advance, the bush exerts a positioning function during the horizontal axis mounting operation, and The flanges provided on the sides of the bush can effectively prevent the trim from coming off the bush.

As a result, the operation of assembling the seat back to the seat bottom is facilitated, and the trim is not caught between the seat back side bracket and the horizontal shaft. The pivoting movement does not damage the trim, which is convenient.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a connecting portion between a seat bottom and a seat back of a vehicle seat according to the present invention.

FIG. 2 is an assembled perspective view of FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a perspective view illustrating a combined state of a seat bottom and a seat back.

FIG. 5 is a partial cutaway partial sectional view illustrating a supported state of a conventional seat back. Is.

[Explanation of symbols]

 1 Seat 11 Seat Bottom 12 Seat Back 13 Seat Back Frame 14 Cushion Material 15 Trim 15a Through Hole 2 Stepped Bolt (Horizontal Axis) 21 Body Part 22 Screwing Part 23 Nut 3 Bracket 31 Through Hole 4 Seat Bottom Side Bracket 41 Through Hole 5 Bush 51 Body 52 Flange

Claims (1)

[Scope of utility model registration request] 1. A vehicle seat in which a seat back, which is a backrest, is foldably connected to a seat bottom, which is a seat, by rotating around a horizontal axis, and a seat bottom side protruding from a frame of the seat bottom. The horizontal shaft is provided so as to pass through the bracket, the seat back trim, and the through holes provided in the seat back side brackets formed on both sides of the seat back. The horizontal shaft is provided on the horizontal shaft. A bush having a flange is externally fitted to one side portion of the portion, the outer diameter of the flange is formed larger than the hole diameter of the through hole of the trim in this bush, and the end surface of this flange abuts the seat back side flange, A vehicle seat, wherein the body is attached in a state of penetrating through holes of both the trim and the seat bottom side bracket.