JP2577968Y2 - Seat cushion - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat cushion composed of a cushion frame for a vehicle or the like and a seat pad.

[0002]

2. Description of the Related Art As one type of a vehicle seat cushion, a seat cushion 31 having a thick pad mounted on a panel-type cushion frame 30 as shown in FIG.
As shown in FIG. 1, in order to improve the cushioning property, a thin seat pad 44 is placed on a cushion frame 40 having a structure in which an upper frame 42 around which an S-shaped spring 41 is stretched is supported using a coil spring 43. Are known.

[0003]

By the way, in the seat cushion shown in FIG. 4, the cushion frame 30 has a simple structure, but it is necessary to use a thick seat pad 31 to provide cushioning. Therefore, there is a disadvantage that the sheet becomes thick and the amount of the pad material used increases. In addition, this kind of seat cushion using the cushion frame 30 and the seat pad 31 is not suitable for a low-height type passenger car, and the type of vehicle used is limited. Further, in the seat cushion shown in FIG. 5, the used seat pad 44 is thin, but the cushion frame 40 requires the S-shaped spring 41 and the coil spring 43 and the like, so that there are many components and the weight tends to be heavy. . Further, in both seats, it was not possible to adjust the flexing feeling according to the occupant's body type and preference.

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

[0005]

SUMMARY OF THE INVENTION Therefore, a first invention of the present application is to provide a seat cushion constituted by placing a seat pad on a cushion frame, wherein the cushion frame is supported at least on a floor side of a vehicle body. A U-shaped front frame in which the left and right sides are pipe-shaped and a rod is inserted therein, and a U-shaped front frame rotatably connected to the rear end of the rod at the left and right sides of the seat. A connecting portion between the rod and the U-shaped rear frame is press-fitted into a cushioning rubber filled into a pipe at the end of the U-shaped front frame. It is characterized by the following.

A second aspect of the present invention is characterized in that the rod is provided with position adjusting means so that the connecting portion moves forward and backward in the cushioning rubber in the front-rear direction. Preferably, in the connecting portion, a diameter of the U-shaped rear frame is larger than a diameter of the rod.

[0007]

[Effects and Effects of the Invention] The seat cushion of the present invention has a U-shaped rear frame rotatably connected to a rod inserted into a pipe of a U-shaped front frame fixed to the floor side of a vehicle. Since the connecting portion is press-fitted into the cushioning rubber filled into the pipe at the end of the U-shaped front frame in a tubular shape, a load was applied to the U-shaped rear frame when a person was sitting down. In this case, the U-shaped rear frame can swing up and down by the elasticity of the cushioning rubber with the connecting portion as a pivot point, so that the cushion has a simple structure without using a thick cushion pad or a heavy spring. It is possible to obtain a flexing feeling with the frame itself.

Further, in the second invention, the connecting portion between the U-shaped rear frame and the rod can be advanced and retracted in the cushioning rubber by providing the rod position adjusting means. If the rod is inserted in the direction of the end of the U-shaped front frame to reduce the portion in contact with the cushioning rubber of the U-shaped rear frame, the vertical swing amount of the U-shaped rear frame can be increased. Conversely, if the rod is retracted 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 vertical movement of the U-shaped rear frame will increase. The amount of movement can be reduced, and the amount of bending of the seat cushion can be adjusted according to the body shape and preference of the seated person.

When the diameter of the U-shaped rear frame is made larger than the diameter of the rod in the connecting portion, the compression degree of the cushioning rubber in contact with the U-shaped rear frame is increased, and the rubber at that portion is increased. Because the elastic characteristics of the
For example, when the rod is slid so that the size of the contact portion between the U-shaped rear frame and the cushioning rubber increases, the swing amount decreases when the diameter of the U-shaped rear frame is equal to the diameter of the rod. It appears to be strengthened compared to a certain case, and similarly, when the rod is slid so that the size of the contact portion between the U-shaped rear frame and the cushioning rubber is reduced, the swing amount also increases. It appears to be enhanced compared to the case where the diameter of the frame and the diameter of the rod are the same.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One 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 the seat cushion according to the present invention.
It comprises a cushion frame 10 and a cushion pad 11 mounted thereon.

FIG. 2 is a perspective view of the cushion frame 10 used in the vehicle seat of FIG. 1, and FIG. 3A is a longitudinal sectional view of a portion A shown in FIG. Front frame 12 and U-shaped rear frame 1
3 form a schematic outline, each frame 1
A plurality of pad receiving panels 14 are fixed to 2 and 13 in a lateral direction for mounting cushion pads. In the U-shaped front frame 12 of this embodiment, a pipe 12a forming the left and right sides and a horizontal axis 12b connecting the two pipes 12a are formed of different members, and the pipes 12a on both sides thereof are formed by different members. It is attached to a lower arm 16 on the floor side of the vehicle body using a fixing member 15. And a pipe 12a forming a side of the U-shaped front frame 12.
The tapered portion 12aa is provided so that the diameter of the pipe 12a increases at the rear end, and a cylindrical buffer rubber 17 is filled in the pipe at the rear end where the diameter increases.

A rod 18 is inserted into the left and right side pipes 12a, and a pin 19 is attached to a connecting piece 13a having a rear end of the rod 18 fixed to a front end of a U-shaped rear frame 13. And are connected so as to be rotatable in the vertical direction (see FIG. 3B). In order to prevent the U-shaped rear frame 13 from being bent more than necessary, a stopper 12ab for preventing the U-shaped front frame 12 from being excessively lowered is provided at the rear end. And the connecting part is
It is press-fitted into the rubber cushion 17 filled in the end of the pipe 12a forming the side of the U-shaped front frame. In this connection, the diameter of the U-shaped rear frame 13 is formed larger than the diameter of the rod 18.

The left and right rods 18 are connected and fixed to a rod support plate 20 disposed at the front end of the seat, and a screw 21 is provided through the rod support plate 20, and the tip of the screw 21 has a U-shape. It is screwed to the horizontal axis 12b of the front frame 12. And the screw 21
Using the handle 22 attached to the screw 21
By rotating the rod, the rod support plate 20 slides while keeping parallel to the horizontal axis 12b of the U-shaped front frame 12, and the position of the rod 18 can be adjusted. Note that this screw is pivotally supported on the horizontal axis 12b of the U-shaped front frame 12 and the rod support plate 2
It may be possible to adjust the distance between the horizontal shaft 12b of the U-shaped front frame 12 and the rod support plate 20 by screwing it to zero.

By configuring the seat cushion of the present invention in this manner, 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. Can be swung up and down by the elasticity of the cushioning rubber 17 with the pivot point as a fulcrum, so that it is possible to obtain a flexing feeling with a simple cushion frame itself without using a thick cushion pad or a heavy spring. Become.

The rod support plate 20 and the screw 21
Is provided so that the connection between the U-shaped rear frame 13 and the rod 18 can advance and retreat within the cushioning rubber 17 by the rotation of the screw 21. Therefore, the rod 18 is advanced toward the rear end of the pipe 12a forming the side of the U-shaped front frame 12 to reduce the portion of the U-shaped rear frame 13 which is in contact with the cushioning rubber 17. Then, the vertical swinging amount of the U-shaped rear frame 13 can be increased, and conversely, the rod 18 is retracted in the direction away from the rear end of the pipe 12a of the U-shaped front frame 12, and the U-shaped rear frame 13 is retracted. Increasing the portion of the frame 13 that is in contact with the cushioning rubber 17 can reduce the amount of vertical swing of the U-shaped rear frame 13 and increase the body shape of the occupant. It is possible to adjust the amount of deflection of the seat cushion according to preference.

Since the diameter of the U-shaped rear frame 13 is larger than the diameter of the rod 18 in the connecting portion, the compression degree of the cushioning rubber 17 in contact with the U-shaped rear frame 13 is large. As a result, the elastic characteristics of the cushioning rubber 17 at that portion change, and the U-shaped rear frame 13
A decrease in the swing amount when the rod 18 is slid so that the size of the contact portion between the rod 18 and the cushioning rubber 17 increases;
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 is reduced, the swing amount is increased by the U-shaped rear frame 1.
3 and the diameter of the rod 18 are enhanced compared to the case where the diameter is the same.

In this embodiment, the position adjusting means of the rod 18 is constituted by the rod support plate 20 and the screw 21 as main members. Pipe 12 on the side of
It is also possible to make a structure in which the position can be adjusted by being screwed in a part to a.

[Brief description of the drawings]

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

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

FIG. 3A is a longitudinal sectional view of a portion A shown in FIG. 2; (B) It is a perspective view of the connection part of the U-shaped front frame and the 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 broken 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)

(57) [Scope of request for utility model registration] 1. A seat cushion comprising a seat pad mounted 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 inside the cushion frame. And a U-shaped rear frame that is rotatably connected to the rear end of the rod at the left and right sides of the seat, where the rod and the U-shaped front frame are inserted. A seat cushion characterized in that a connection portion with the U-shaped rear frame is press-fitted into a cushioning rubber filled in a pipe at an end of the U-shaped front frame. 2. A seat cushion comprising a cushion pad and a seat pad mounted thereon, 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. And a U-shaped rear frame that is rotatably connected to the rear end of the rod at the left and right sides of the seat, where the rod and the U-shaped front frame are inserted. The connecting portion with the U-shaped rear frame is press-fitted into a buffer rubber filled in a tubular shape in a pipe at the end of the U-shaped front frame, and the connecting portion is arranged in the buffer rubber in the front-rear direction. A seat cushion provided with a position adjusting means for the rod so as to move forward and backward. 3. The seat cushion according to claim 2, wherein a diameter of the U-shaped rear frame is larger than a diameter of the rod in the connecting portion.