JPH0733149U - Automotive seat cushion structure - Google Patents

Abstract

(57) [Summary] [Purpose] A desired spring feeling is obtained while ensuring a soft feeling of the seat cushion. Structure: A cushion receiver around which a spring is suspended is elastically supported by a coil spring in the vertical direction from below to elastically support, and an initial compression amount of the coil spring can be set by a setting member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cushion structure for an automobile seat, and more particularly to a structure for obtaining a desired spring feeling while maintaining a soft feeling.

[0002]

[Prior art]

 Normally, in automobile seats, various structures have been adopted to obtain a comfortable seat feeling by adopting a structure in which the cushion material is received by the plummer or plate in the seat cushion.

For example, in the plummer specification, a structure in which the outer peripheral edge of the plummer is suspended on a seat cushion frame by a tension spring is adopted, and in the plate specification, a so-called spring-rich structure in which the outer peripheral edge of the plate is suspended by a tension spring in a seat cushion frame, Bands are attached to the rear ends of both sides of the plate, and bolts are fastened to the seats on the seat cushion frame side to apply an initial load to the tension springs.

[0004]

[Problems to be solved by the device]

 However, in the conventional seat cushion structure, if the elastic force of the suspension spring is weak and the initial load of the band is small, the seat cushion becomes too soft as a whole and the body feels like it is sinking. There is a feeling of full extension and a satisfactory spring feeling is not obtained, but if the suspension spring has a strong elasticity and the initial load is large, the seat cushion as a whole tends to become too hard. There is a problem that adjustment is difficult.

In view of the above problems, it is an object of the present invention to provide a cushion structure for a vehicle seat that can obtain a desired spring feeling while maintaining a soft feeling as a whole.

[0006]

[Means for Solving the Problems]

 Therefore, the cushion structure for an automobile seat according to the present invention is a cushion structure for an automobile seat in which the outer peripheral edge of the cushion receiver is suspended by a spring in the seat cushion frame and the cushion material is received by the cushion receiver. A spring stay is provided below the hip point of the coil spring, and a coil spring extends upward from the spring stay to receive the cushion at the upper end of the coil spring, while the coil spring sets the initial compression amount. Is provided so that the vicinity of the hip point of the cushion receiver is elastically supported by a desired elastic force.

Here, the initial compression amount of the coil spring means the compression amount of the coil spring before seating. The cushion receiver may be either plummer type or plate type. The compression amount setting member may be any member that can set the initial compression amount of the coil spring.For example, the end of the expandable rod has a plate that presses the upper end of the coil spring to regulate the maximum extension of the rod. The initial compression amount of the coil spring may be set, but considering assembly workability and cost, it is preferable to use a band. This band may be attached to the spring stay by pressing the upper end of the coil spring, but considering the number of parts and assembling work, it is preferable that the band is also used as a band for applying an initial load to the suspension spring.

The compression amount setting member may be configured to change the initial compression amount of the coil spring according to the occupant's preference, road conditions, and the like. For example, in the case of a telescopic rod, a guide groove may be provided in the inner rod, and a stopper pin that contacts the upper end of the guide groove may be provided in the outer rod so that the position of the stopper pin can be changed. A plurality of mounting holes may be formed in any direction, and the band length can be changed by selecting the mounting hole.

The spring stay may be attached to any part, but it is necessary to consider so that the function of the coil spring elastically supporting the cushion receiver can be exerted. For example, in the case of a seat equipped with a tilt mechanism, the seat cushion frame moves up and down, so it is good to extend the spring stay in the width direction and attach it to the seat cushion frame. In the case of a non-seat, the structure may be similar to the above, but since the seat cushion frame does not move up and down, the spring stay can be attached to the upper channel of the slider mechanism.

[0010]

[Action and effect of the device]

 According to the present invention, since the vicinity of the hip point of the spring-suspended cushion receiver is received by the coil spring in the vertical direction from below, the sinking of the body can be prevented by the elastic force of the coil spring, and the spring feeling can be improved. Can be secured.

Moreover, since the initial compression amount of the coil spring can be set by the setting member, a satisfactory spring feeling can be obtained from a soft spring feeling to a hard spring feeling.

Also, the elastic force of the suspension spring itself can be set to an appropriate level of weakness, and the seat cushion itself can be made soft even though there is no depression of the body.

Further, since the cushion receiver receives this from below with the coil spring, the unpleasant traveling vibration transmitted from the passenger compartment floor to the cushion receiver can be attenuated by the coil spring to improve the vibration insulation performance, and the quiet seat. Feeling is obtained.

[0014]

【Example】

 Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. FIG. 1 shows a cushion structure for an automobile seat according to an embodiment of the present invention. In the figure, a slider mechanism 2 is provided below the seat cushion frame 1, tilt mechanisms 3 are provided on both side frame portions 10 of the seat cushion frame 1, and reclining is provided at the rear ends of both side frames 10. A seat back frame (not shown) is attached via the mechanism.

The slider mechanism 2 is configured such that the upper channel 20 and the lower channel 21 are slidably combined with each other in the longitudinal direction, and the drive motor 22 slides the upper channel 20 with respect to the lower channel 21. The side frame portion 10 is attached to the upper channel 20 via a link 30 of the tilt mechanism 3.

In the tilt mechanism 3, the rear end of the link 30 is swingably attached to the upper channel 20 of the slider mechanism 2, and the front end of the link 30 is connected to a gear plate 32, and the gear plate 32 is a side frame. In addition to being rotatably supported by the portion 10, it is connected to the rotary shaft of the drive motor 31 via a gear (not shown), and the rotary shaft is provided with a brake mechanism (not shown). , The link 30 is swung up and down around the rear end attachment point to tilt the side frame part 10 with respect to the upper channel 20, while the load from the side frame part 10 side is received by the brake mechanism and the side frame 10 is rotated. It is configured to lock the frame portion 10 in its position.

On the other hand, one end of a suspension spring 6 composed of a pair of tension coil springs is attached near the four corners of the outer periphery of the plate (cushion receiver) 5, and the other end of each suspension spring 6 is locked to the seat cushion frame 1. The plate 5 is suspended from the seat cushion frame 1.

Bands (compression amount setting members) 7 are attached to the rear ends of both sides of the plate 5, and a receiving seat 11 is attached to the rear ends of the side frame portions 10. The receiving seat 11 has the above-mentioned band. The tip of 7 is fixed with bolts and nuts to apply an initial load to the suspension spring 6. A cushion material (not shown) such as a urethane pad is placed on the plate, and the seat cushion is constituted by covering the cushion material with a skin.

Two spring stays 8 are provided below the hip point of the plate 5, the spring stays 8 extend in the width direction, and both ends thereof are welded to both side frame portions 10 of the seat cushion frame 1. The lower ends of two coil springs 9 arranged in the width direction are fixed to the spring stay 8 by clips 90 or caulking, and the coil springs 9 extend upward, and the upper ends thereof are The coil spring 9 elastically supports the vicinity of the hip point of the plate 5 by the coil spring 9, and the band 7 for applying the initial load of the suspension spring 6 also sets the initial compression amount of the coil spring 9.

When the seat cushion of this structure is seated, the suspension spring 6 expands according to the weight of the occupant and displaces the plate 5 downward. A coil spring 9 is provided below the plate 5 near the hip point. Therefore, most of the weight of the occupant is received by the coil spring 9 being compressed downward, and the elastic force thereof can reliably prevent the body from sinking.

Moreover, since the coil spring 9 is set to a predetermined initial compression amount by the band 7, the coil spring 9 is further compressed from its initial compression state when the occupant is seated, and a satisfactory spring feeling is obtained.

According to the experiments conducted by the present inventors, when the length of the band 7 is properly set, an arbitrary spring feeling can be obtained from a soft spring feeling to a hard spring feeling. Also, when the band 7 is removed, the initial load of the suspension spring 6 and the initial compression of the coil spring 9 are released, and the elastic stroke of the coil spring 9 is retained while the seat is seated, and the compression stroke becomes long, resulting in a feeling of coil spring. It felt more realistic.

Since the coil spring 9 prevents the body from sinking, the spring force of the suspension spring 6 does not cause the body to sink even if the spring force of the suspension spring 6 is set to be relatively weak. It becomes a cushion and can improve comfort.

Further, while traveling, traveling vibrations and the like are often transmitted from the passenger compartment floor to the seat cushion to give an occupant an uncomfortable feeling. In the cushion structure of this example, the space between the plate 5 and the slider mechanism 2 is increased. Since the coil spring 9 is provided, running vibrations and the like are damped by the coil spring 9, which does not give an occupant an uncomfortable feeling. The seat cushion is quiet and has high vibration insulation performance.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an essential part of a cushion structure for an automobile seat according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Seat cushion frame 5 ... Plate (cushion holder) 6 ... Suspension spring 7 ... Band (compression amount setting member) 8 ... Spring stay 9 ... Coil spring

Claims (2)

[Scope of utility model registration request] 1. A seat for an automobile in which an outer peripheral edge of a cushion receiver is suspended on a seat cushion frame by a spring, and the cushion material is received by the cushion receiver, wherein a spring is provided below a hip point of the cushion receiver. A coil spring extending upward and attached to the spring stay, and the cushion receiver is received at the upper end of the coil spring, while the coil spring has a member for setting the initial compression amount. Is provided, and the vicinity of the hip point of the cushion receiver is elastically supported by a desired elastic force. 2. The spring stay is a band extending in the seat width direction and attached to a seat cushion frame, and the compression amount setting member is a band attached between a cushion receiver and a seat cushion frame. The cushion structure for the automobile seat described.