JP2842508B2 - Seat back side support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side support structure for a seat back of a vehicle seat or the like. More specifically, the present invention relates to a back upper frame portion and a pair of left and right sides extending downward from both ends of the back upper frame portion. The present invention relates to a side support structure of a seatback having a frame portion, a side panel fixed to the pair of left and right side frame portions, and a side support wire provided on the side panel.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 3, a vehicle seat 1 is provided with a seat cushion 2 and a seat back 3 erected by a reclining mechanism so as to be freely rotatable by a reclining mechanism.
As shown in FIGS. 3 and 4, the seat back 3 has side supports 5 formed on both sides thereof so as to protrude forward.

[0003] The seat back frame 6 of the seat back 3
As shown in FIG. 5 (a), includes a back upper frame portion 6a and a pair of left and right side frame portions 6b extending below both ends of the back upper frame portion 6a. A side panel 7 constituting the side support 5 is fixed to the pair of left and right side frame portions 6b, and a side support wire 9 protruding forward is provided on the side panel 7.

As shown in FIG. 5 (b), the side support 5 may be formed only of a side panel 7 fixed to a pair of left and right side frame portions 6b, and the seat back frame 6 is formed of a pipe frame or the like. There are also those that are formed in a substantially inverted U-shape or those that are formed in a square frame shape from a pipe frame or the like.

A mounting hole for mounting the arm of the reclining mechanism is provided at a lower portion of the pair of left and right side frame portions 6b, and a clip for mounting a seat spring on the inner end of the side frame portion 6b or the side panel 7 is provided. Holes are formed.

[0006] In the conventional side support structure of the seat back, the side support 5 of the seat back 3 is enlarged in order to improve the side support performance of the seat back 3. To increase the size of the side support 5, the size of the side panel 7 is increased, or the side support wire 9 is provided.

[0007]

However, in the conventional side support structure of the seat back as described above, the side support 5 of the seat back 3 is enlarged in order to improve the side support of the seat back 3, so that the occupant of the occupant is required. At the time of getting on and off, the vehicle hits the side support of the seat back and cannot easily get on and off, and also comes into strong contact with the side support of the seat back, which may damage the skin material of the side support of the seat back.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the side supportability and the ease of getting on and off, to have a simple structure, reduce the number of parts, reduce assembly man-hours, and improve workability. The present invention is to provide a seat back side support structure which is extremely economical and can reduce weight and cost.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a side support structure for a seat back according to claim 1 of the present invention comprises a back upper frame portion, and a back upper frame portion. A pair of left and right side frame portions extending downward from both ends of the seat back, wherein a side panel is fixed to the pair of left and right side frame portions, and a side support wire is provided on the side panel. A flange portion is formed at the front end of the side support wire, and a pair of guide members are fixed to upper and lower positions of the flange portion, and the upper and lower pair of guide members have a substantially semi-circular base through which the upper and lower ends of the side support wire are inserted. A guide groove extending in the width direction is formed at the base of the substantially semicircular arc, and the guide groove is formed on the side support wire. Projections formed on the end of is inserted into the guide groove, the side support wires of the seat back is characterized in that it is made only rotatably inside the guide member.

According to a second aspect of the present invention, there is provided a seat back side support structure comprising: a back upper frame portion;
A pair of left and right side frame portions extending downward from both ends of the back upper frame portion, a side panel fixed to the pair of left and right side frame portions, and a side support structure provided with side support wires on the side panels. , A flange portion is formed at least at a front end side of the outer side panel of the seat back, and a pair of guide members are fixed to upper and lower positions of the flange portion, and the upper and lower pair of guide members are upper and lower ends of a side support wire. A guide groove extending in the width direction is formed in the substantially semi-circular base, and a protrusion formed in upper and lower ends of the side support wire is formed in the guide groove. And the side support wire is made rotatable only inward by the guide member, and Wherein the id support wire is spring-biased outwardly.

[0011]

According to the seat back side support structure of the first aspect of the present invention, a flange portion is formed on the front end side of the side panel, and a pair of guide members are fixed to upper and lower positions of the flange portion, and the upper and lower portions are fixed. The pair of guide members has a substantially semi-circular base that penetrates upper and lower ends of the side support wire, and guide grooves extending in the width direction are formed in the substantially semi-circular base, respectively. Since the protrusion formed at the end is inserted into the guide groove and the side support wire of the seat back is rotatable only inward by the guide member, the outward movement of the side support wire is prevented, and the side support property is reduced. Can be improved, and the side support wire can rotate only inward, so that the getting on and off property can be improved, Formation reduces the number of components in the simple, the assembly man-hours is reduced, thereby improving the workability.

According to the side support structure of the seat back according to the second aspect of the present invention, a flange portion is formed at least on the front end side of the outer side panel of the seat back, and a pair of guides are provided at upper and lower positions of the flange portion. The member is fixed, and the pair of upper and lower guide members have a substantially semicircular base that penetrates the upper and lower ends of the side support wire,
Guide grooves extending in the width direction are respectively formed in the substantially semi-circular base, protrusions formed at upper and lower ends of the side support wires are inserted into the guide grooves, and the side support wires are turned only inward by the guide members. Since it is made movable, the movement of at least the outer side support wire to the outer side is prevented, and the side supportability of the side support can be improved, and the side support wire can rotate only inward.
The side support can be deformed to improve the getting on / off property, and the side support wire is spring-biased outward, so that the side support can return to its original shape during normal or riding.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A side support structure for a seat back according to the present invention will be described below in detail with reference to the drawings. FIG. 1 (a),
2 (b) and 2 (c) and FIGS. 2 (a) and 2 (b) schematically show an embodiment of the seat back side support structure according to the present invention, respectively, as shown in FIG. 1 (a). The seat back frame 11 of the seat back 3 is formed in a substantially rectangular frame shape.

The seat back frame 11 includes a back upper frame portion 12, a pair of left and right side frame portions 13 extending downward from both ends of the back upper frame portion 12, and a pair of left and right side frame portions 13 connected to each other. The lower frame 14 is formed.

A side panel 17 constituting a side support 15 is fixed to the pair of left and right side frame portions 13, and a side support wire 19 projecting forward is provided on the side panel 17.

At least an outer side support wire 19 of the seat back 3 is rotatable only inward by a guide member 21, and the side support wire 19 is biased outward by a spring 23.

A flange portion 17a is formed on the front end side of the side panel 17, and a pair of guide members 21 are fixed to the upper and lower positions of the flange portion 17a as shown in FIG. The pair of upper and lower guide members 21 has a substantially semi-circular base 25 through which the upper and lower ends 19 a of the side support wire 19 are inserted, and mounting portions 27 formed at both ends of the base 25. In addition, the flange portion 17a is not formed on the front end side of the side panel 17, and the side panel 17
Alternatively, the guide member 21 may be fixed directly to the second member.

As shown in FIG. 1 (b), a guide groove 2 is formed in a substantially semicircular base 25 through which upper and lower ends 19a of the side support wires 19 of the guide member 21 are inserted.
9 are formed, and the projections 3 formed on the upper and lower ends 19a of the side support wires 19 are formed in the guide grooves 29, respectively.
1 is inserted.

In this embodiment, a guide groove 29 is formed in the base 25 of the guide member 21 so that the side support wire 1
The projections 31 are formed on the upper and lower ends 19a of the upper and lower portions 9 respectively, but these configurations can be reversed.

As shown in FIGS. 1A and 1C, a spring 23 is provided near the guide member 21 through which the lower end 19a of the side support wire 19 is inserted. One end 23a of the spring 23 is
The other end 23b is fixed to the lower end 19a of the side support wire 19 through the through hole 33.
And is formed of a coil spring inserted and locked in the coil spring.

In this embodiment, the side support wires 1
Although the spring 23 is provided near the guide member 21 through which the lower end 19a of the side support 9 is inserted, the spring 23 may be provided at the upper end 19a of the side support wire 19, or the spring 23 may be provided at both upper and lower ends 19a.
Can also be provided. Further, the configuration of the spring 23 is not limited to the illustrated one, but can be variously modified and changed.

According to such a configuration, as shown in FIG. 2A, the side support 15 of the seat back 3 is protruded outward by the bias of the spring 23 as shown by the arrow a, and when the passenger gets on and off the vehicle. When the side support 15 is pressed in the direction indicated by the arrow b, the upper and lower ends 19a of the side support wire 19 are opposed to the bias of the spring 23.
The protrusions 31 respectively formed on the base 2 of the guide member 21
5B, the side support 15 of the seat back 3 is deformed inward as shown in FIG. 2B.

[0023]

The above is the configuration of one embodiment of the side support structure of the seat back according to the present invention. According to the configuration of the first aspect, the back upper frame portion and the both ends of the back upper frame portion A pair of left and right side frame portions extending downward, a side panel fixed to the pair of left and right side frame portions, and a side support structure of a seat back provided with a side support wire on the side panel; A pair of guide members are fixed to the upper and lower positions of the flange portion, and the upper and lower pair of guide members have a substantially semicircular base through which the upper and lower ends of the side support wire are inserted; Guide grooves extending in the width direction are respectively formed in a substantially semicircular base, and formed at upper and lower ends of the side support wire. The projected protrusion is inserted into the guide groove, and the side support wire of the seat back is made rotatable only inward by the guide member. Therefore, the outward movement of the side support wire is prevented, and the side supportability is improved. And the side support wire can rotate only inward, so that it is possible to improve the getting on and off property, the configuration is simple, the number of parts is reduced, the number of assembly steps is reduced, and the workability is improved. it can.

According to the second aspect of the present invention, the seat back includes a back upper frame portion and a pair of left and right side frame portions extending downward from both ends of the back upper frame portion. In a side support structure of a seat back in which a side panel is fixed to a side frame portion and a side support wire is provided on the side panel, a flange portion is formed at least on a front end side of an outer side side panel of the seat back, A pair of guide members is fixed to the upper and lower positions of the pair, and the upper and lower pair of guide members have a substantially semi-circular base through which the upper and lower ends of the side support wire are inserted. Extending guide grooves are formed respectively, and protrusions formed at upper and lower ends of the side support wire are formed. Is inserted into the guide groove, the side support wire is made rotatable only inward by the guide member, and the side support wire is spring-biased outward, so that at least the outward movement of the outer side support wire is prevented. The side support can be improved, the side support can be improved, and the side support wire can rotate only inward. Since it is biased, the side support can return to its original shape during normal operation or during riding.

As described above, according to the present invention, the side supportability can be improved, and the getting on / off property can be improved, the configuration is simple, the number of parts is reduced, the number of assembly steps is reduced, and the workability is reduced. Can be improved, and a side support structure for a seat back that is extremely economical and can be reduced in weight and cost can be obtained.

[Brief description of the drawings]

FIG. 1 shows a side support structure of a seat back according to the present invention, wherein (a) is a perspective view of a frame configuration,
(B) is a cross-sectional view of a guide member, and (c) is a cross-sectional view of a state where a spring is biased.

FIGS. 2A and 2B show a side support structure of a seat back according to the present invention, in which FIG. 2A is a cross-sectional view of the side support in a normal state, and FIG.

FIG. 3 is a side view of the vehicle seat.

FIG. 4 is a sectional view of a seat back of a conventional vehicle seat.

FIGS. 5A and 5B show a frame structure of a seat back of a conventional vehicle seat, and FIGS. 5A and 5B are perspective views of the frame structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Seat back frame 12 Back upper frame part 13 Side frame part 15 Side support 17 Side panel 19 Side support wire 21 Guide member 23 Spring 25 Base 27 Attachment part 29 Guide groove 31 Projection 33 Through hole

Claims (2)

(57) [Claims] 1. A back upper frame portion, and a pair of left and right side frame portions extending downward from both ends of the back upper frame portion. A side panel is fixed to the pair of left and right side frame portions, and is attached to the side panel. In a side support structure of a seat back provided with a side support wire, a flange portion is formed at a front end side of the side panel, and a pair of guide members is fixed to upper and lower positions of the flange portion, and the pair of upper and lower guide members are side support wires. A guide groove extending in the width direction is formed in the substantially semi-circular base, and a protrusion formed in the upper and lower ends of the side support wire. Is inserted into the guide groove, and the side support wire of the seat back is rotated only inward by the guide member. Side support structure of the seat back characterized by being made possible. 2. A back upper frame portion, and a pair of left and right side frame portions extending downward from both ends of the back upper frame portion, a side panel is fixed to the pair of left and right side frame portions, and the side panel is fixed to the side panel. In the side support structure of the seat back provided with the side support wire, a flange portion is formed at least at a front end side of the outer side panel of the seat back, and a pair of guide members are fixed to upper and lower positions of the flange portion, and The pair of guide members has a substantially semi-circular base that penetrates upper and lower ends of the side support wire, and guide grooves extending in the width direction are formed in the substantially semi-circular base, respectively. The protrusion formed at the end is inserted into the guide groove, and the side support wire is A side support structure for a seat back, wherein the side support wire is rotatable only inward by a material, and the side support wire is biased outward.