JPH0682949U - Vehicle seat structure - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the feeling of rubbing when vertical vibrations of the vehicle body are transmitted to the seat, and to obtain the backrest surface shape of the seat back according to the occupant's preference. [Structure] A large number of lateral support pieces 12 are rotatably connected from a seat cushion frame 4 to an upper end portion of a seat back frame 6 to form a flexible plate 11 that is deformable in a curved shape. The flexible plate 11 is elastically assembled to the seat cushion frame 4 and the seat back frame 6 by a required number of support springs 14 and 15. On the back surface of the seat back portion of the flexible plate 11, a required number of air supports 17 for deforming and supporting the seat back portion of the flexible plate 11 into an arbitrary curved shape by being expanded and contracted by compressed air are provided. Has been done.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a vehicle seat structure.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 5, a seat cushion 21 of a vehicle seat includes a seat cushion frame assembled to an upper rail of a seat track mechanism, an S-shaped spring stretched on the frame, and an S-shaped spring. It is mainly composed of an elastically supported mold pad and a cover skin covering the mold pad. Further, the seat back 22 assembled to the rear portion of the seat cushion 21 by a reclining mechanism includes a seat back frame supported by a hinge plate of the reclining mechanism so as to be adjustable in inclination, and an S-shaped spring stretched on the frame. , A mold pad elastically supported by the S-shaped spring and a cover skin covering the mold pad, and a lumbar support 23 for pushing the mold pad forward is provided near the lower part of the back surface of the mold pad. The structure that was assembled was common.

[0003]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional one, the vibration absorption direction of the seat cushion 21 is mainly the vertical direction, and the vibration absorption direction of the seat back 22 is mainly the front rear direction. Therefore, when the vertical vibration of the vehicle body is transmitted to the seat while the vehicle is running, the seat back 22 may be rubbed in the vertical direction on the backrest surface of the seat back 22, and the sitting comfort may be deteriorated. Further, the conventional lumbar support 23 has a structure in which the lateral flat strip support plate is moved in the front-back direction to partially push out the back surface of the mold pad. It was

In view of the above-mentioned conventional problems, an object of the present invention is to reduce the feeling of rubbing when vertical vibration of the vehicle body is transmitted to the seat, and to reduce the shape of the backrest surface of the seatback portion. It is to provide a vehicle seat structure that can be obtained according to the occupants' preferences.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention constitutes a flexible plate that is deformable in a curved shape by rotatably connecting a number of lateral support pieces from the seat cushion frame to the upper end of the seat back frame. The flexible plate is elastically assembled to the seat cushion frame and the seat back frame by a required number of supporting springs, and the flexible plate is expanded / contracted by compressed air on the back surface of the seat back portion to be A required number of air supports are provided for supporting the seat back portion of the flexible plate by deforming it into an arbitrary curved shape.

[0006]

[Action]

 In the vehicle seat structure configured as described above, when the vertical vibration of the vehicle body when the vehicle is running is positioned on the seat, the vertical vibration supports the elastic support of the flexible plate. It is absorbed by the expansion and contraction of the spring. As a result, the inconvenience of giving a seated person a feeling of vertical rubbing on the backrest surface of the seat back portion is eliminated. The flexible shape of the flexible plate can be freely changed by adjusting the expansion and contraction of the air support.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, upper rails 2 are slidably fitted in a pair of left and right lower rails 1 of a seat track assembled on a floor panel in the front-rear direction, and a slide lock mechanism (not shown) allows an arbitrary slide adjustment position. Locked in. Brackets 3 are fixed on the upper rails 2, respectively, and a seat cushion frame 4 is fixed between the brackets 3. A seat back frame 6 is tiltably mounted by a reclining hinge mechanism 5 near the rear end of the bracket 3 on both upper rails 2.

A flexible plate 11 that is deformable in a curved shape is assembled from a substantially central portion in the front-rear direction of the seat cushion frame 4 to an upper end portion of the seat back frame 6. The flexible plate 11 is composed of a large number of horizontal strip-shaped support pieces 12 rotatably connected by a connecting band 13 as shown in FIG. 3, and as shown in FIG. The seat cushion portion is elastically supported by the support cushion 14 on the seat cushion frame 4 at a total of four locations on the left and right front and rear ends, and the seat back portion of the flexible plate 11 has both right and left sides. The seat back frame 6 is elastically supported by the support springs 15 at a total of 6 positions including the upper end, the central height, and the lower end.

In the upper and lower portions between the left and right frame portions of the seatback frame 6, a pair of upper and lower support bars 16 are installed in total. An air support 17 for supporting the rear surface of the seat back portion of the flexible plate 11 is attached to each of the pair of support bars 16 by a mounting piece 18 protruding from the rear surface thereof as shown in FIG. .

Each of the air supports 17 has a bellows portion and is formed in an expandable and contractible bag shape. Each of these air supports 17 is in communication with a pump motor for compressed air via a switching valve and a pressure adjusting valve (not shown). Then, the air pressure of each air support 17 is adjusted individually to adjust the expansion and contraction of each air support 17, whereby the flexible plate 11 is deformed into an arbitrary curved shape. ing.

As shown in FIG. 2, the seat cushion frame 4 and the seat back frame 6 are provided with a series of continuous mold pads 7 with the lower surface and the back surface thereof being supported by the flexible plate 11. The vehicle seat is configured by mounting the seat cover 8 so as to cover the surface of the vehicle.

This embodiment is constructed as described above. Therefore, when vibrations in the upward and downward directions of the vehicle body while the vehicle is traveling are transmitted to the seats, the vertical vibrations are absorbed by the expansion and contraction of the support springs 14 and 15 that elastically support the flexible plate 11. To be done. As a result, the problem of giving a seated person a feeling of vertical rubbing on the backrest surface of the seat back portion is eliminated, and sitting comfort is improved. In addition, compressed air is individually supplied from the pump motor through the switching valve and the pressure adjusting valve, and the upper and lower air supports 17 are expanded and contracted, thereby freely changing the curved shape of the flexible plate 11. Therefore, the backrest surface shape of the seat back portion can be obtained according to the preference of the seated person, and the sitting comfort is further improved.

[0013]

[Effect of device]

 As described above, according to the present invention, it is possible to solve the problem that the seat back part has a feeling of rubbing in the vertical direction to the seated person, and it is possible to improve the sitting ground. Further, the curved shape of the flexible plate can be freely changed by the air support, and the backrest surface shape of the seat back portion can be changed according to the preference of the seated person, so that the sitting comfort can be further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a vehicle seat structure according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a perspective view showing a part of a flexible plate of the same.

FIG. 4 is a perspective view showing an assembled state of the air support.

FIG. 5 is a side view showing a conventional vehicle seat.

[Explanation of symbols]

 4 Seat cushion frame 6 Seat back frame 11 Flexible plate 12 Support pieces 14, 15 Support spring 17 Air support

Claims (1)

[Scope of utility model registration request] 1. A flexible plate that is deformable in a curved shape is formed by rotatably connecting a number of lateral support pieces from a seat cushion frame to an upper end portion of a seat back frame, and a required number of the flexible plates. Elastically assembled to the seat cushion frame and the seat back frame by the support spring of, respectively, on the back surface of the seat back portion of the flexible plate,
A vehicle seat structure characterized by having a required number of air supports for supporting the seat back portion of the flexible plate by being expanded and contracted by compressed air to be deformed into an arbitrary curved shape. .