JP3013311U - Vehicle seat - Google Patents

Abstract

(57) [Abstract] [Purpose] A torsion vehicle and a torsion bar are used as cushioning springs for a vehicle seat to achieve a thin vehicle seat that does not produce a dead space when seated and is durable. [Structure] At least a torsion torsion spring 11 or a formed wire 22 is fixed to a front side and a rear side of a seat frame, and the torsion torsion spring 11 or the formed wire 22 is provided between a locking portion and a fixing portion of a pad receiver panel 3. The bent portions 16a, 16b, 25a, 25b are provided in the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improved structure of a spring used for a seat of an automobile or the like, and more particularly to a vehicle seat using a torsion spring for the seat.

[0002]

[Prior art]

 Conventionally, as the spring body interposed between the pad receiving body panel supporting the seat pad and the seat frame, as shown in FIG. 6, an S spring 4 with a fish mouth and a conical spring 5 are often used. Has been done. FIG. 6 is a side sectional view of such a conventional seat.

In the figure, reference numeral 1 denotes a seat frame fixed to a vehicle floor or the like, and a pad receiving panel 3 is interposed at a lower end of a seat pad 2 formed of a cushion body or the like constituting a seat. Between the panel 3 and the seat frame 1, a buffer body using an S spring 4 with a fish mouth and a plurality of conical springs 5 is interposed. Such a shock absorber has a high vibration isolation property, and it becomes possible to form a seat having excellent dynamic properties.

In the above-mentioned seat cushion, since the spring 4 with the fish mouth and the plurality of conical springs 5 are used, the thickness including the seat pad 2 becomes large, so that there is a problem that it can be applied only to a limited seat. It was

In order to solve such a problem, a structure using a torsion bar is provided so that sufficient elasticity can be imparted even if the seat pad is thinned instead of these cushioning bodies. As disclosed in the specification.

FIG. 7 is a front view showing the configuration described in the above specification, and the portions corresponding to those in FIG. 6 are designated by the same reference numerals and their duplicate description will be omitted.

A torsion bar 8 having one end locked to a bracket 6 fixed to the metal seat frame 1 by welding or the like and the other end locked to an elongated hole 7 formed in the pad receiver panel 3 is a seat frame. 1 and the pad receiving panel 3 are interposed.

The tip of the torsion bar 8 forms a hook portion 10 that is bent in an L shape, and the hook portion 10 is inserted into the elongated hole 7 through a cut groove 9 that communicates with the elongated hole 7. It is slidably locked to.

Therefore, when a pressing force in the direction of arrow A is applied to the pad receiver panel 3, the torsion bars 8 fall to the position shown by the alternate long and short dash line and the bent hook portion 10 of the torsion bar 8 is The pad receiver panel 3 is elastically supported by sliding in the long holes 9.

[0010]

[Problems to be solved by the device]

 In the configuration of FIG. 7 described above, the thickness of the entire sheet can be reduced by using the torsion bar, but when the pad receiving panel 3 is loaded, the bent hook portion 10 at the tip of the torsion bar 8 has a long hole. Since it is designed to absorb the load of load by sliding inside 9, the durability is poor and there is a problem that the structure tends to deteriorate the feeling and performance when sitting on the seat. It was

The present invention provides a vehicle seat that solves the above-mentioned problems. The object is to prevent the hook portion of the torsion bar from sliding in the long hole provided in the pad receiving panel. , The horizontal displacement of the pad receiving panel 3 under load is twisted so that it is absorbed by the vertical or vertical displacement at the bent portion or coil portion of the torsion spring or the bent portion of the formed wire. However, it is intended to obtain a vehicle seat that has high durability, is comfortable to sit on, and has little performance deterioration.

[0012]

Means for Solving the Problems In order to solve the above problems, a vehicle seat according to the present invention has one end rotatably locked to a pad receiving panel that supports a seat pad and the other end on the floor. In a vehicle seat elastically supported by a torsion spring rotatably locked to a front portion of a seat frame mounted on a seat, an upper locking end of the torsion spring disposed at the front portion of the main frame is provided. And the lower locking end has a bent portion between both ends, and the bent portion is attached between the pad receiver and the main frame in a non-contact manner.

[0013]

[Action]

 In the vehicle seat of the present invention, since the pad receiving panel that supports the seat pad is elastically supported by the torsion spring having the bent portion in the seat frame, the seat pad does not fall and exhibits excellent cushioning properties as a seat. In addition, since the coil portion and the bending portion that form the bending portion absorb the changes in load in the front, rear, up, and down directions, it has excellent operability and durability over a long period of time, and has the same structure as the three-dimensional spring structure. It is possible to obtain a product that has feeling and performance and can be thinned.

[0014]

【Example】

 Hereinafter, an embodiment of a seat cushion for a vehicle according to the present invention will be described in detail with reference to FIGS. FIG. 1 is a perspective view showing an assembled state of a vehicle seat of this example, FIG. 2 is a side view of a main part of the vehicle seat of this example, and FIG. 3 is a perspective view showing another configuration of a torsion spring used in this example. Is.

1 and 2, parts corresponding to those in FIGS. 6 and 7 are designated by the same reference numerals. As shown in FIG. 1, the seat frame 1 is formed into a substantially box shape, the top surface is opened, and the torsion torsion springs 11 and the torsion bars 8 are formed in the Ω shape on the bottom surfaces 1a and 1b of the seat frame 1, respectively. It is fixed by the cover plates 12a, 12b, 12c formed. These cover plates 12a to 12c are fixed to the bottom surfaces 1a and 1b by spot welding or the like.

In the torsion bar 8, the shape of the wire on the surface in contact with the bottom surface 1b of the seat frame 1 is substantially convex, and the rising portions 13a and the rising portions 13a rising at a predetermined angle from the both ends of the wire having the ridges. 13b, which is connected to the rising portions 13a and 13b and is constituted by hook portions 10a and 10b which are bent inwardly in an L shape.

The hook portions 10 a and 10 b of the torsion bar 8 are inserted into the through holes 15 a and 15 b of the locking pieces 14 a and 14 b provided on the pad receiving panel 3, and the biasing force for lifting the pad receiving panel 3 upward. Is given.

Further, the torsion torsion spring 11, which is fixed to the front of the seat frame 1 by a rivet or spot welding with a cover plate 12C, has a substantially U-shaped wire on the surface in contact with the bottom surface 1a of the seat frame 1. The coil springs 16a and 16b are formed at both ends of the U-shaped wire, and the rising portions 17a and 17b and the hook portions 18a and 18b are connected to the ends of the coil springs 16a and 16b. The hook portions 18a and 18b are formed in the pad receiving panel 3 by being bent inward so that the hook portions 18a and 18b have through holes 20a and 20b. It is configured to elastically support the pad receiving panel 3 which is inserted into the sheet and becomes a sheet as shown in FIG.

Although the torsion torsion spring 11 and the torsion bar 8 are integrally formed in the above-described embodiment, the torsion torsion spring 11 is shown in FIG. 3A and the torsion bar 8 is shown in FIG. 3B. It is also possible to fix a plurality of each of the above-mentioned elements to the seat frame 1. Further, the hook portions 18a, 18b, 10a, 10b may be configured to be bent outward as shown by a broken line. In this case, portions 21 and 22 are fixed to the seat frame 1 via the cover plates 12a to 12c.

FIG. 4 shows the structure of a seat frame 1 according to another embodiment of the present invention. In FIG. 1, a torsion wire spring 11 arranged in front of the seat frame 1 is replaced by a formal wire 22. All have the same structure except the above. The form wire 22 of this example is in contact with the bottom surface 1a of the seat frame 1 and is fixed to the cover plate 12c by riveting or spot welding, and a linear wire portion 23a, and the bottom surface 1a from both ends of the wire portion 23a. With respect to the rising portions 24a and 24b that rise at a predetermined angle, the bending portions 25a and 25b that are connected to the rising portions 24a and 24b and are bent outward at a right angle, and the end portions of the bending portions 25a and 25b. And rising portions 26a and 26b bent to the front side at a right angle, and hook portions 27a and 27b bent inward from both ends of the rising portions 26a and 26b. At 26b, an elastic force is applied to the load from the cushion body side.

The pair of left and right formed wires 22 having the above-described configuration are integrally formed by bending, and as shown in FIGS. 5A and 5B, the mounting portions 23a of the plurality of formed wires 22 are covered by the cover plates 12a to 12c. It may be fixed to the bottom surface 1a of the frame 1.

Further, as shown in FIG. 5B, zigzag type bending portions 28 may be formed on the rising portions 26a and 26b to adjust the hardness (deflection) of the spring. These hook portions 27a and 27b may be bent outward as shown by broken lines so as to be inserted into the through holes 20a and 20b of the locking pieces 19a and 19b formed on the pad receiving panel.

In the vehicle seat of the present invention, the torsion bar is arranged behind the seat frame 1, that is, behind the hip position when a person sits on the seat, and the rotation of the torsion bar ensures a stroke under load. Since this is done, not only is there no dead space under the hips, but it is also possible to reduce the thickness of the seat.

Further, the torsion torsion spring and the torsion bar have high linearity, and good vibration endurance can be obtained. The pad receiving panel uses a winged panel that has high surface rigidity and good side support, so that the entire seating surface flexes and a stable body pressure distribution is obtained.

Further, in the conventional torsion bar, the hook portion slides into the elongated hole of the engaging portion to absorb the displacement in the horizontal direction. The horizontal displacement of the torsion bar due to the applied load on the torsion bar can be absorbed by the vertical and vertical displacements of the coil parts 16a and 16b of the torsion torsion spring and the bent parts 25a and 25b of the formed wire. It is possible to obtain a vehicle seat that has a high height and does not cause deterioration in the feeling of the seating when sitting.

[0026]

[Effect of device]

 The torsion torsion spring and the torsion bar used in the vehicle seat of the present invention have high linearity and good vibration isolation characteristics. Also, because the torsion bar is located behind the seat when sitting, there is no dead space and the seat can be made thinner.

Furthermore, since there is no sliding part in the locking part, performance deterioration and feeling deterioration during seating are less likely to occur, and it is more stable if a winged panel with high surface rigidity is used as the pad receiver panel. A vehicle seat with a body pressure distribution can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembled state of a vehicle seat of the present invention.

FIG. 2 is an enlarged side view of a main part of the vehicle seat of the present invention.

FIG. 3 is a perspective view showing another configuration of a spring and a torsion bar used in the vehicle seat of the present invention, FIG. 3A is a perspective view of a torsion torsion spring, and FIG. 3B is a perspective view of a torsion bar.

FIG. 4 is a perspective view showing another configuration of the seat frame of the vehicle seat of the present invention.

5 is a perspective view showing another configuration of the formed wire used in the vehicle seat of the present invention, FIG. 5A being a cut of the formed wire of FIG. 4, and FIG. It has been transformed.

FIG. 6 is a configuration diagram of a conventional vehicle seat.

FIG. 7 is another configuration diagram of a conventional vehicle seat.

[Explanation of symbols]

 1 seat frame 2 seat pad 3 pad receiver panel

Claims (4)

[Scope of utility model registration request] 1. A torsion member, one end of which is rotatably locked to a pad receiving panel that supports a seat pad, and the other end of which is rotatably locked to a front portion of a seat frame placed on a floor. In a vehicle seat elastically supported by a spring, a bending portion is provided between both ends of an upper locking end and a lower locking end of the torsion spring arranged at a front portion of the seat frame, and the bending portion has the pad. A vehicle seat characterized by being attached in a non-contact manner between a receiving body and a main frame. 2. The vehicle according to claim 1, wherein a bent portion is provided between both ends of an upper locking end and a lower locking end of the torsion spring arranged at a rear portion of the seat frame. Sheet. 3. A bending portion is provided between both ends of an upper locking end and a lower locking end of the torsion spring arranged at a front portion and a rear portion of the seat frame, and the bending portion serves as the pad receiving body. The vehicle seat according to claim 1 or 2, wherein the main seats are mounted in a non-contact manner between the main frames. 4. The vehicle seat according to any one of claims 1 to 3, wherein the torsion spring is formed wire.