JPH0645849U - Suspension device for automobile seat - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the suspension property of a vehicle seat suspension device. [Structure] The front side of the seat cushion (SC) and the vehicle floor are connected by a link (1), the back and back of the seat back (SB) and the vehicle floor are connected by a shock absorber (3), and the back and forth of the seat back are vertically aligned. Arc-shaped slide rail (2
1) Fix (21) and slide rail (21)
The roller (41) (41) provided on the suspension frame (5) standing upright from the vehicle floor side is slidably fitted to (21).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suspension device for absorbing vibration of a vehicle seat, and more particularly to a suspension device provided on a seat back side.

[0002]

[Prior art]

 In a conventional general suspension device, a seat cushion is connected to a vehicle floor below the seat cushion or a slide rail for adjusting the front-rear position of the seat cushion by an X-shaped link, and a shock absorber is arranged upright. There is a structure that is installed to support the seat cushion.

[0003]

[Problems to be solved by the device]

 By the way, since the shock absorbers are arranged upright in the conventional product, the shock absorbers are more excellent in vibration absorption than the tilted products. However, since the shock absorber is arranged between the bottom surface of the seat cushion and the vehicle floor, there is a problem that the height of the seat cushion from the vehicle floor becomes high. Therefore, an object of the present invention is to provide a suspension device excellent in vibration absorption without increasing the height of the seat cushion.

[0004]

[Means for Solving the Problems]

 A suspension device for a vehicle seat according to the present invention to achieve the above object is a link for pivotally pivotally supporting the seat cushion on the front side of the seat cushion and the vehicle floor side below the rear part of the seat cushion. A shock absorber arranged across the back of the seat back and the vehicle floor, an arc-shaped slide rail fixed vertically to the back of the seat back, and sliding inside the slide rail. It consists of a roller installed on the suspension frame that stands up from the vehicle floor on the back side of the seatback.

[0005]

[Action]

 By installing a shock absorber for absorbing vibration on the back side of the seat back, the stroke is large and a shock absorber is used.The seat back is a curved slide provided on the back of the seat back against vibration. While moving along the rails, at the same time, the front part of the seat cushion absorbs vibration by moving around the link provided on the vehicle floor as the center of rotation.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a vehicle seat equipped with a suspension device according to the present invention. In the drawings, (SB) is a seat back, (SC) is a seat cushion, and the seat cushion (SC) and seat back ( SB) is integrally connected, and the seat cushion (SC) is connected to the left and right sides of the seat cushion (SC) to the upper rails (71) of the seat adjuster (7). The link (1) is rotatably pivoted at its upper end to the seat frame (12) of the seat cushion (SC) and at its lower end to a hinge bracket (11) welded to the upper rail (71).

A connecting rod (51) is installed on the rear portions of the upper rails (71) (71) of the left and right seat adjusters (7) (7), and is connected to the center of the connecting rod (51) in the longitudinal direction. A suspension frame (5) integral with the rod (51) is provided upright. (72) in the figure is a lower rail fixed to the vehicle floor. The suspension frame (51) is formed in a U shape having an opening in the back direction of the seat back (SB).

A bracket (22) is fastened to the back and back of the seat back (SB), and U-shaped slide rails (21) (21) (21) (21) are arranged on the left and right sides of the bracket (22) so that the openings face each other. ) Is fixed in the vertical direction. A shock absorber (3) is attached between the back of the seat back (SB) and the lower part of the suspension frame (5).

A weight adjusting device is provided so as to adjust the suspension force according to the weight of the seated person, extending between the upper portion of the suspension frame (5) and the lower back of the seat back (SB). This weight adjusting device is composed of a coil spring (61) and the like, the lower end of which is hooked on a hooking piece (68) provided on the lower back of the seat back (SB), which will be described with reference to FIG. .

The upper end of the coil spring (61) is hooked on the lower part of the rotating arm (62), the rotating arm (62) is formed in a substantially V shape, and the suspension frame (5) is formed at the substantially center thereof. Is rotatably pivotally mounted by a pin (63) provided on the upper part of which a long hole (64) is opened, and a sliding pin (integrated with the nut (65) is formed in the long hole (64). 69) is inserted, the nut (65) is screwed on the screw shaft (66) which is integral with the operating shaft (68), and the operating handle (67) is integrally provided on the operating shaft (68). The above-mentioned screw shaft (66) is rotatably installed above the suspension frame (5). Therefore, when the operation handle is rotated, the screw shaft (66) is rotated via the operation shaft (68) to move the nut (65) in the axial direction. The movement of the nut (65) causes the rotating arm (62) to rotate about the pin (63), so that the tension of the coil spring (61) is adjusted and a suspension force corresponding to the weight of the seated person is obtained. be able to.

A shaft (42) penetrating the suspension frame (5) is provided on the upper portion of the suspension frame (5), and rollers (41) (41) are rotatably provided at both ends of the shaft (42). The rollers (41) are mounted and slidably or rotatably fitted in the slide rails (21) (21) on the seat back (SB) side. As shown in FIG. 4, the slide rails (21) (21) are formed in an arc shape (R) in the length direction, and have the same curvature (R) as a circle having a radius of rotation of the link (5). Preferably.

Since the seat cushion (SC) and the seat back (SB) are supported by the link (1), the shock absorber (3), and the coil spring (61) of the weight adjusting device, the seat cushion (SC) and the seat back (SB) are removed from the vehicle floor. When shocked or vibrated, the seat cushion (SC) and seat back (SB) move up and down around the hinge racket (11) mounting part of the link (1), and the shock absorber (3) and coil spring ( 61) Absorbs vibrations and the like. At that time, since the slide rails (21) (21) of the seat back (SB) are formed to have the same curvature as the circle of the turning radius of the link (1), the seat back (SB) is seat cushion (SC). ) And move smoothly.

[0013]

[Effect of device]

 According to the present invention, since the shock absorber is provided between the back side of the seat back and the suspension frame standing on the back side of the seat back, the shock absorber having a large stroke is attached in the vibration direction. Therefore, the vibration absorption is good, and the height of the seat cushion can be reduced as in the conventional products. In addition, since arc-shaped slide rails are arranged vertically on the back and back of the seat back, the seat back moves with the seat cushion, that is, the entire seat moves smoothly due to shock, vibration, etc. The property is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle seat having a suspension device according to the present invention.

FIG. 2 is a partially cutaway side view of the same.

FIG. 3 is a partial cutaway view of a suspension device according to the present invention.

FIG. 4 is a perspective view of a slide rail used in the suspension device according to the present invention.

[Explanation of symbols]

 SC Seat cushion SB Seat back 1 Link 21 Slide rail 3 Shock absorber 41 Roller 5 Suspension frame

Claims (1)

[Scope of utility model registration request] 1. A link for pivotally rotatably supporting a seat cushion on a front side of a seat cushion and a vehicle floor side below a rear portion of the seat cushion, and a link provided between a back of a seat back and a vehicle floor side. Shock absorbers, arc-shaped slide rails fixed to the back and back of the seat back in the vertical direction, rollers that slide on the slide rails and that are provided on a suspension frame that stands up from the vehicle floor on the back and back of the seat back, A suspension device for automobile seats.