JPH057161U - Support structure for cushions in vehicle seats - Google Patents

Abstract

(57) [Abstract] [Purpose] When an occupant performs a pedaling operation, even if the front of the seat is pushed downward, no uncomfortable movement such as pushing up the hip behind the seat occurs, and the vehicle is (EN) Provided is a cushion structure for a vehicle seat, which can firmly support an occupant without lateral swaying of the occupant even when a lateral acceleration applied to a curve is applied to the occupant. [Structure] In a structure for supporting a seat cushion in a vehicle seat in which a cushion panel for mounting a seat pad 12 is attached to a seat frame 13, this panel is composed of a main panel 14 and a sub panel 15.
The front end side of the main panel 14 is pivotally fixed to the front end of the seat frame 13, and the first compression coil spring 16 is disposed on the lower surface of the rear end side. The rear end of the sub panel 15 is pivotally fixed to the middle of the main panel 14, and the second compression coil spring 17 is disposed on the lower surface of the front end.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat cushion support structure for a vehicle seat.

[0002]

[Prior Art]

 As one type of support structure for a seat cushion in a vehicle seat, as shown in FIGS. 5 and 6 and Japanese Patent Laid-Open No. 58-141108, a cushion frame 30 is provided with a plurality of tension springs 31. There is a type in which a cushion panel 32 movably supported in the vertical direction is attached, and a pad material 33 is provided on the upper surface of the cushion panel 32.

[0003]

[Problems to be solved by the device]

 By the way, in the above-described conventional seat cushion support structure for a vehicle seat, when the pedal (clutch, brake) is depressed, the front side of the cushion panel 32 is downward as shown by the two-dot chain line in FIG. It is pushed (X direction), and at the same time, the rear part jumps upward (Y direction), so that the hips feel uncomfortable. When the vehicle approaches a curve or the like and rolling occurs, the cushion panel 32 is very unstable and has a large inclination as shown by a chain double-dashed line in FIG. Become.

[0006] These drawbacks are because the cushion panel is supported only by the tension springs, so that there is no restriction on the operation direction and there is a possibility that the cushion panel may move in all directions up and down, left and right, and front and back. Occur. An object of the present invention is to provide a support structure for a seat cushion in a vehicle seat that addresses these problems.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the present invention provides a support structure for a seat cushion in a vehicle seat, in which a flat cushion panel on which a cushion pad is mounted is supported by a seat frame fixed to the floor side via a spring member. A seat cushion support structure for a vehicle seat comprising the main panel having a size corresponding to the seat frame and a sub-panel having a length in the front-rear direction shorter than the main panel. , The front end side of the main panel is vertically rotatably assembled to the front end side of the seat frame, and the rear end side is vertically repelled to the rear end side of the seat frame via a spring member. And the rear end side of the sub-panel is vertically rotatably attached to the upper middle portion of the main panel in the front-rear direction. In, it was characterized by Tamabachi supported on the vertical direction front end side and through the spring member to the top of the front side of the main panel.

[0006]

[Operation and effect of the device]

 With such a configuration, the cushion panel is divided into the main panel and the sub-panel pivotally fixed in the middle of the main panel, so when the occupant depresses the brake pedal, the clutch pedal, etc., the front end side spring The members are compressed and only the sub-panel is activated, and the main panel hardly moves, so there is no uncomfortable movement like pushing up the hips. Also, the front of the main panel and the rear of the sub-panel are pivotally fixed so that they can only rotate in the upward and downward directions, so the cushion structure will not be affected even if lateral acceleration is applied to the occupant when the vehicle bends. The occupant can be firmly supported without bending in the horizontal direction simply by bending in the vertical direction. Furthermore, the front and rear front end side spring members and the rear end side spring member are separately provided, so that the elastic body is clearly separated into the front and rear parts. Therefore, a spring member having an elastic force according to the characteristics at each position is provided. Can be selected as appropriate.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a seat cushion of a vehicle seat adopting a support structure according to an embodiment of the present invention. The seat cushion includes a cushion cover 11, a cushion pad 12, a seat frame 13, and a main body. It is composed of a panel 14, a sub-panel 15, a first compression coil spring 16 and a second compression coil spring 17. The seat frame 13 has a U-shape in which a pair of left and right lower arms 13a are connected by a connecting rod 13b at the front end side, and is fixed to the vehicle floor by both lower arms 13a. The main panel 14 has a flat plate shape having a size corresponding to the seat frame 13, and is attached to both lower arms 13a so as to be vertically rotatable via hinge pins 18a at both left and right front end portions. The rear end side of the main panel 14 is elastically supported in the vertical direction by the lower arms 13a by a pair of left and right first compression coil springs 16.

The sub-panel 15 has a flat plate shape corresponding to the size and shape of the front half of the main panel 14, and the left and right sides on the rear end side are substantially centered on the upper side of the main panel 14 via hinge pins 18b. It is attached to both sides so that it can rotate in the vertical direction. The front end side of the sub-panel 15 is elastically supported in the vertical direction by a pair of left and right second compression coil springs 17 on the upper front end side of the main panel 14. The cushion pad 12 is placed on both panels 14 and 15, and the cushion cover 11 integrally covers the cushion pad 12 and both panels 14 and 15 to form a sheet cushion.

A vertical cross-sectional view of the cushion thus constructed is shown in FIG. 2, in which the heights of the first compression coil spring 16 and the second compression coil spring 17 are indicated by A and B, respectively. Has been done. When the occupant sits on this seat cushion, the weight of the occupant is added to the cushion pad 12, and the pad material is compressed along the body shape 22 of the occupant when the occupant normally sits, as shown in the vertical sectional view of FIG. The load is also transmitted to the panel 14 and the sub-panel 15, the main panel 14 rotates about the main panel hinge point 21, and the sub panel 15 also rotates about the sub panel hinge point 20. At the same time, the first compression coil The spring 16 and the second compression coil spring 17 are compressed, and the respective heights thereof are reduced to C and D.

When the occupant depresses the pedal, the front panel of the seat cushion is predominantly loaded along the body 23 when the occupant depresses the pedal, as shown in FIG. Further rotation at the sub-panel hinge point 20 causes the second compression coil spring 17 to be compressed to the height E. At this time, the load behind the cushion is almost the same as that when seated normally, and since the main panel 14 is not rotated, the height of the first compression coil spring 16 is hardly changed.

Therefore, according to such a configuration, an uncomfortable movement such as pushing up the hip portion does not occur during the pedal depression operation. Further, since the front of the main panel 14 and the rear of the sub-panel 15 are pivotally fixed so as to be rotatable only by hinge pins 18a and 18b, lateral acceleration is applied to the occupant when the vehicle bends. Even if added, the cushion structure of the vehicle seat only flexes in the vertical direction and does not tilt in the left-right direction, so that the occupant can be firmly supported. Further, the seat cushion support structure in this vehicle seat is provided with the second compression coil spring 17 on the front side and the first compression coil spring 16 on the rear side, so that the elastic body is clearly separated into the front and the rear, so that at each position. It is possible to appropriately select a spring having an elastic force according to the above characteristics.

Further, in this embodiment, the compression coil spring is used as the elastic body at the front and rear of the cushion structure of the vehicle seat, but a torsion coil spring or a tension coil spring can be used. The seat pad 12 and the coil springs 16 and 17 are further compressed when the occupant is seated on the vehicle seat having this cushion support structure (FIG. 3) or when the pedal is depressed (FIG. 4). Needless to say, it should be configured so that the vehicle vibration can be absorbed by leaving a sufficient margin.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a seat cushion support structure in a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a seat cushion support structure in the vehicle seat of FIG.

FIG. 3 is a vertical cross-sectional view of the vehicle seat of FIG. 1 when seated on a seat cushion support structure.

FIG. 4 is a vertical cross-sectional view of the vehicle seat of FIG. 3 when seated on a support structure of a seat cushion and a pedal is depressed.

FIG. 5 is a partially broken perspective view of a seat cushion in a conventional vehicle seat.

FIG. 6 is a cross-sectional view of a seat cushion in the vehicle seat shown in FIG.

FIG. 7 is an explanatory diagram when a pedal depression operation is performed on the seat cushion of the vehicle seat shown in FIG.

8 is an explanatory diagram when rolling occurs in the seat cushion of the vehicle seat shown in FIG.

[Explanation of symbols]

11 ... Cushion cover, 12 ... Cushion pad, 1
3 ... Seat frame, 13a ... Lower arm, 13b ... Connecting rod, 14 ... Main panel, 15 ... Sub panel, 1
6 ... 1st compression coil spring, 17 ... 2nd compression coil spring, 18a, 18b ... Hinge pin, 20 ... Hinge point for subpanels, 21 ... Hinge point for main panels, 2
2 ... Physical form of occupant during normal seating, 23 ... Physical structure of occupant during pedal operation, 30 ... Frame, 31 ... Extension spring, 32 ... Cushion panel, 33 ... Pad material.

Claims (1)

[Claims for utility model registration] 1. A seat in a vehicle seat in which a flat cushion panel on which a cushion pad is mounted is supported via a spring member on a seat frame fixed to the floor side. In the cushion support structure, the cushion panel is composed of a main panel having a size corresponding to the seat frame and a sub-panel having a length in the front-rear direction shorter than that of the main panel, and a front end side of the main panel of the seat frame is The front end side is rotatably assembled in the vertical direction, and the rear end side is elastically supported in the vertical direction by a spring member on the rear end side of the seat frame, and the rear end side of the sub-panel is It is attached to the upper middle part of the main panel in the front-rear direction so as to be rotatable in the vertical direction, and the front end side is spring-loaded to the upper part of the front end side of the main panel. A seat cushion support structure for a vehicle seat, which is elastically supported in the vertical direction via a member.