JPH0633542U - Seat cushion - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a seat cushion having a cushioning property by using a cushion frame having a simple structure, and further, a seat cushion capable of adjusting a bending amount according to a seated person's body shape and taste. To provide. In a seat cushion in which a seat pad 11 is placed on a cushion frame 10 supported on the floor side of a vehicle body, the cushion frame 10 has a pipe 12a on the left and right sides and a rod 18 inside the pipe 12a. U-shaped front frame 12 and rod 1 inserted
And a U-shaped rear frame 13 that is rotatably connected to the rear end portion of 8. A cushioning rubber 17 is cylindrically filled in the pipe 12a at the end of the U-shaped front frame 12, and the connecting portion between the rod 18 and the U-shaped rear frame 13 is press-fitted into the cushioning rubber 17. It is done and goes back and forth.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat cushion including a cushion frame and a seat pad for a vehicle or the like.

[0002]

[Prior art]

 As one type of vehicle seat cushion, a thick seat pad 31 is placed on a panel-type cushion frame 30 as shown in FIG. 4, or as shown in FIG. It is known that a thin seat pad 44 is placed on a cushion frame 40 having a structure in which an upper frame 42 having a spring 41 stretched around is supported by a coil spring 43.

[0003]

[Problems to be solved by the device]

 By the way, in the seat cushion shown in FIG. 4, although the cushion frame 30 has a simple structure, it is necessary to use the thick seat pad 31 in order to provide the cushioning property. It has the drawback of increasing the amount of material used. In addition, the seat cushion using the cushion frame 30 and the seat pad 31 of this type is not suitable for a passenger car of a low vehicle height type, and the type of vehicle used is limited. Further, in the seat cushion shown in FIG. 5, the seat pad 44 used is thin, but since the cushion frame 40 needs the S-shaped spring 41, the coil spring 43, etc., it has many components. It tends to be heavy. In addition, it was not possible to adjust the bending feeling of both seats according to the seated person's body shape and preferences.

Therefore, the present invention provides a seat cushion having a cushioning property by using a cushion frame having a simple structure, and further, a seat cushion capable of adjusting a bending amount according to a seated person's body shape and taste. The purpose is to provide.

[0005]

[Means for Solving the Problems]

 Therefore, a first invention of the present application is a seat cushion configured by mounting a seat pad on a cushion frame, wherein the cushion frame is supported on a floor side of a vehicle body and at least left and right sides are pipe-shaped. It consists of a U-shaped front frame in which a rod is inserted, and a U-shaped rear frame that is rotatably connected to the rear ends of the rods on the left and right sides of this seat. A connecting portion between the rod and the U-shaped rear frame is press-fitted into a cushioning rubber that is cylindrically filled in a pipe at an end portion of the U-shaped front frame.

The second invention is characterized in that the rod position adjusting means is provided so that the connecting portion moves forward and backward in the cushioning rubber. Further, preferably, in the connecting portion, the diameter of the U-shaped rear frame is larger than the diameter of the rod.

[0007]

[Operation and effect of the device]

 In the seat cushion of the present invention, the U-shaped rear frame is rotatably connected to the rod inserted into the pipe of the U-shaped front frame fixed to the floor side of the vehicle, and the connecting portion is connected to the U-shaped rear frame. Since it is press-fitted into the cushioning rubber that is cylindrically filled in the pipe at the end of the U-shaped front frame, when a load is applied to the U-shaped rear frame such as when a person is seated, Since the U-shaped rear frame can swing up and down with the elasticity of the cushioning rubber using the connecting portion as the fulcrum of rotation, the cushion frame itself has a simple structure without using a thick cushion pad or a heavy spring. It is possible to obtain a sense of bending.

Further, in the second invention, by providing the rod position adjusting means, the connecting portion between the U-shaped rear frame and the rod can be moved forward and backward in the cushioning rubber. , When the rod is inserted toward the end of the U-shaped front frame to reduce the portion of the U-shaped rear frame that is in contact with the cushioning rubber, the vertical swing amount of the U-shaped rear frame is increased. On the contrary, if the rod is retracted in the direction away from the end of the U-shaped front frame to increase the portion of the U-shaped rear frame that is in contact with the cushioning rubber, the upper and lower sides of the U-shaped rear frame can be changed. The amount of swing in the direction can be reduced, and the amount of flexure of the seat cushion can be adjusted according to the body shape and preference of the seated person.

If the diameter of the U-shaped rear frame is made larger than the diameter of the rod at the connecting portion, the compressibility of the cushioning rubber with which the U-shaped rear frame is in contact is increased, and the rubber of that portion is increased. Since the elasticity characteristics of the U-shaped rear frame change, for example, when the rod is slid so that the size of the contact area between the U-shaped rear frame and the cushioning rubber increases, And the diameter of the rod are the same as those in the case where the rod is slid so that the size of the contact portion between the U-shaped rear frame and the cushioning rubber becomes small. The increase in momentum also appears to be enhanced compared to the case where the diameter of the U-shaped rear frame and the diameter of the rod are the same.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a vehicle seat using a seat cushion according to the present invention. The seat cushion includes a cushion frame 10 and a cushion pad 11 placed on the cushion frame 10.

FIG. 2 is a perspective view of the cushion frame 10 used in the vehicle seat of FIG. 1, and FIG. 3A is a vertical sectional view of a portion A shown in FIG. 2. The cushion frame 10 has a U-shape. -Shaped front frame 12 and U-shaped rear frame 13 form a schematic outer shape, and a plurality of pad receiving panels 14 are laterally fixed to each of the frames 12 and 13 for mounting cushion pads. Has been done. In the U-shaped front frame 12 of this embodiment, a pipe 12a forming left and right sides and a horizontal shaft 12b connecting the both pipes 12a are formed as separate members, and the pipes 12a on both sides thereof are formed. And is attached to a lower arm 16 on the floor side of the vehicle body using a fixing member 15. The pipe 12a forming the side of the U-shaped front frame 12 is provided with a tapered portion 12aa so that the diameter of the pipe 12a is increased at the rear end, and the tapered end 12aa is formed at the rear end. A tubular cushioning rubber 17 is filled in the pipe.

A rod 18 is inserted inside the pipes 12 a on the left and right sides, and a rear end of the rod 18 is connected to a connecting piece 13 a fixed to a front end of a U-shaped rear frame 13. The pins 19 are connected so as to be vertically rotatable (see FIG. 3 (b)). In order to prevent the U-shaped rear frame 13 from flexing more than necessary, a stopper 12ab for preventing the U-shaped front frame 12 from falling too much is provided at the rear end of the U-shaped front frame 12. The connecting portion is pressed into the cushioning rubber 17 filled in the end portion of the pipe 12a forming the side of the U-shaped front frame. In addition, in this connecting portion, the diameter of the U-shaped rear frame 13 is formed to be larger than the diameter of the rod 18.

The left and right rods 18 are connected and fixed to a rod support plate 20 arranged at the front end of the seat, and a screw 21 is provided penetrating the rod support plate 20, and the tip of the screw 21 is a screw. It is screwed to the horizontal shaft 12b of the character-shaped front frame 12. Then, by rotating the screw 21 using the handle 22 attached to the screw 21, the rod support plate 20 slides while maintaining parallel to the horizontal axis 12b of the U-shaped front frame 12, The position is adjustable. The screw is pivotally supported on the horizontal shaft 12b of the U-shaped front frame 12 and is attached to the rod supporting plate 20 so as to be screwed to the horizontal shaft 12b of the U-shaped front frame 12 and the rod. The distance from the support plate 20 may be adjustable.

By constructing the seat cushion of the present invention as described above, when a load is applied to the U-shaped rear frame 13 such as when a person is seated, the U-shaped rear frame 13 is connected to the pin 19 of the connecting portion. Since it can be swung in the vertical direction by the elasticity of the cushioning rubber 17 with the rotation fulcrum as the fulcrum, it is possible to obtain a feeling of bending with the cushion frame itself having a simple structure without using a thick cushion pad or a heavy spring. And

Further, a position adjusting means for the rod 18 having the rod supporting plate 20 and the screw 21 as main components is provided, and the rotation of the screw 21 causes the connecting portion between the U-shaped rear frame 13 and the rod 18 to have a cushioning property. Since it is configured to be able to move back and forth in the rubber 17, the rod 18 is advanced toward the rear end portion of the pipe 12a that forms the side of the U-shaped front frame 12, and the rod 18 of the U-shaped rear frame 13 is inserted. By reducing the portion in contact with the cushioning rubber 17, the upward and downward swinging amount of the U-shaped rear frame 13 can be increased, and conversely, the rod 18 can be connected to the pipe 12a of the U-shaped front frame 12. If the portion of the U-shaped rear frame 13 that is in contact with the cushioning rubber 17 is increased by retreating in the direction away from the rear end of the U-shaped rear frame 1 It is possible to reduce the amount of vertical rocking of the seat 3, and it is possible to adjust the amount of flexure of the seat cushion according to the seated person's body shape and taste.

Since the diameter of the U-shaped rear frame 13 is larger than the diameter of the rod 18 at the connecting portion, the compressibility of the cushioning gum 17 with which the U-shaped rear frame 13 is in contact is high. The amount of swing when the rod 18 is slid so that the elastic characteristics of the cushioning rubber 17 in that portion change and the size of the contact portion between the U-shaped rear frame 13 and the cushioning rubber 17 increases. And the increase in the amount of swing when the rod 18 is slid so that the size of the contact portion between the U-shaped rear frame 13 and the cushioning rubber 17 becomes smaller, the diameter of the U-shaped rear frame 13 increases. And the diameter of the rod 18 is the same as that of the case where the diameter is increased.

In this embodiment, the position adjusting means for the rod 18 is composed of the rod supporting plate 20 and the screen 21 as main members. However, these members are not used, and the rod 18 is provided in a U-shaped forward direction. It is also possible to partially screw the pipe 12a on the side of the frame 12 and adjust its position.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle seat using a seat cushion according to the present invention.

2 is a perspective view of a cushion frame 10 used in the vehicle seat of FIG. 1. FIG.

3 (a) is a vertical sectional view of a portion A shown in FIG. (B) It is a perspective view of the connecting part of a U-shaped front frame and a U-shaped rear frame shown in (a).

FIG. 4 is a partially cutaway perspective view of a conventional vehicle seat cushion.

FIG. 5 is a partially cutaway perspective view of another conventional vehicle seat cushion.

[Explanation of symbols]

10 ... Cushion frame, 11 ... Cushion pad,
12 ... U-shaped front frame, 12a ... Pipe, 12b
... horizontal axis, 13 ... U-shaped rear frame, 14 ... pad receiving panel, 15 ... fixing member, 17 ... cushioning rubber, 18 ...
Rod, 19 ... Pin, 20 ... Rod support plate, 21 ... Screw, 22 ... Handle, 30 ... Cushion frame,
31 ... Cushion pad, 40 ... Cushion frame,
41 ... S-shaped spring, 42 ... Upper frame, 43 ...
Coil spring, 44 ... Cushion pad

Claims (3)

[Scope of utility model registration request] 1. A seat cushion constructed by mounting a seat pad on a cushion frame, wherein the cushion frame is supported on a floor side of a vehicle body, and at least left and right sides are pipe-shaped, and a rod is provided therein. A U-shaped front frame into which is inserted, and a U-shaped rear frame that is rotatably connected to the rear ends of the rods on the left and right sides of the seat, where the rod and the U-shaped A seat cushion characterized in that a connecting portion with the U-shaped rear frame is press-fitted into a cushioning rubber that is cylindrically filled in a pipe at an end of the U-shaped front frame. 2. A seat cushion constituted by placing a seat pad on a cushion frame, wherein the cushion frame is supported on a floor side of a vehicle body, and at least left and right sides are pipe-shaped, and a rod is provided therein. A U-shaped front frame into which is inserted, and a U-shaped rear frame that is rotatably connected to the rear ends of the rods on the left and right sides of the seat, where the rod and the U-shaped The connecting portion with the U-shaped rear frame is press-fitted into the cushioning rubber that is tubularly filled in the pipe at the end portion of the U-shaped front frame, and the connecting portion in the cushioning rubber extends in the front-rear direction. A seat cushion provided with means for adjusting the position of the rod so as to move forward and backward. 3. The seat cushion according to claim 2, wherein, in the connecting portion, the diameter of the U-shaped rear frame is larger than the diameter of the rod.