JP2023051667A - Seat for vehicles - Google Patents

Abstract

To provide a seat for vehicles which enables improvement of occupant protection performance and cost reduction.SOLUTION: A seat for vehicles includes a seat cushion frame and the seat cushion frame includes: left and right cushion side frames 11 extending in an anteroposterior direction; and a pan frame 12 which is installed at front portions of the left and right cushion side frames 11 and connects the left and right cushion side frames 11. The cushion side frame 11 has: flanges 112, 113 formed at edges as seen in a vertical direction of the cushion side frame 11 and extending along the cushion side frame in the anteroposterior direction; and reinforcement parts 118 formed in portions behind the pan frame 12 of the flanges 112, 113.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a seat cushion frame.

Conventionally, there has been proposed a mechanism for a vehicle seat frame that enhances the protection of an occupant against impact in the event of a rear-end collision. For example, in a vehicle seat frame described in Patent Document 1 below, a bracket that connects a seat back frame and a seat cushion frame is provided with a fragile portion, and the fragile portion is deformed in the event of a rear-end collision to absorb the impact. there is

WO2017/022737

According to the technique described in Patent Document 1, although it is possible to partially absorb the impact applied in the event of a rear-end collision by deforming the fragile portion, in order to improve passenger protection and reduce costs at the same time. , further improvement was desired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat capable of achieving both improved passenger protection and cost reduction.

According to the vehicle seat of the present invention, the vehicle seat includes a seat cushion frame, wherein the seat cushion frame includes left and right cushion side frames extending in the front-rear direction, and the left and right cushion side frames. a pan frame that connects the left and right cushion side frames; a flange that is formed on an edge of the cushion side frame in the vertical direction and extends forward and backward along the cushion side frame; and a reinforcing portion formed in a portion of a flange positioned rearward of the pan frame.

According to the above configuration, the pan frame is installed on the front side of the cushion side frame to connect the left and right cushion side frames. In other words, the front side of the cushion side frame is enhanced in rigidity by the pan frame, and the occupant protection is improved in the event of a rear-end collision. Therefore, even if the reinforcing portion is formed on the front side of the cushion side frame, its effect is limited. Therefore, by forming a reinforcing portion at least at a position rearward of the pan frame of the flange formed on the edge of the cushion side frame in the vertical direction, the rigidity of the cushion side frame is effectively increased, thereby protecting the occupant. can increase
Further, for example, by forming the reinforcing portion behind the pan frame, it is possible to reduce the manufacturing cost of the cushion side frame compared to the case where the reinforcing portion is formed over the entire length of the flange. As a result, it is possible to achieve both improvement in occupant protection and cost reduction.

Moreover, it is preferable that the reinforcing portion is formed only at a position rearward of the pan frame.
According to the above configuration, it is possible to effectively increase the rigidity of the cushion side frame.
Further, by forming the reinforcing portion only at a position rearward of the pan frame, the manufacturing cost of the cushion side frame can be suppressed compared to the case where the reinforcing portion is formed over the entire length of the flange. As a result, it is possible to achieve both improvement in occupant protection and cost reduction.

Moreover, it is preferable that the reinforcing portion is formed at a position overlapping the pan frame in the front-rear direction.
According to the above configuration, the region whose rigidity is increased by the pan frame and the region whose rigidity is increased by the reinforcing portion can partially overlap. Therefore, in the front-back direction. It is possible to suppress the formation of a low-rigidity region between the pan frame and the reinforcing portion, thereby improving the protection of the occupant.

Further, the flange has an upper flange extending longitudinally at the upper edge of the cushion side frame and a lower flange extending longitudinally at the lower edge of the cushion side frame, and the reinforcing portion includes the upper flange and the said reinforcing portion. It is preferably formed on the lower flange.
According to the above configuration, by forming the reinforcing portion on both the upper flange and the lower flange, it is possible to increase the rigidity of the cushion side frame and improve the protection of the occupant.

Further, it is preferable that the front end portion of the reinforcing portion formed on the upper flange and the front end portion of the reinforcing portion formed on the lower flange are located at the same position in the front-rear direction.
According to the above configuration, it is possible to increase the rigidity of the cushion side frame up to the front end of the reinforcing portion, thereby improving the protection of the occupant.

Further, on the front side of the cushion side frames, a front frame is interposed between the left and right cushion side frames and connects the left and right cushion side frames, and the reinforcing portion is positioned behind the front frame. is preferably formed in
According to the above configuration, the rigidity of the cushion side frame is increased on the front side by the pan frame, and the rigidity is also increased by the front frame. Therefore, even if the reinforcing portion is formed on the front side of the cushion side frame, its effect is limited. Therefore, by forming the reinforcing portion at a position rearward of the front frame, it is possible to effectively increase the rigidity of the cushion side frame and enhance the protection of the occupant.
In addition, the manufacturing cost of the cushion side frame can be suppressed compared to the case where the reinforcing portion is formed over the entire length of the flange. As a result, it is possible to achieve both improvement in occupant protection and cost reduction.

Moreover, it is preferable that the reinforcing portion is formed at a position overlapping the front frame in the front-rear direction.
According to the above configuration, the region whose rigidity is increased by the front frame and the region whose rigidity is increased by the reinforcing portion can partially overlap. Therefore, it is possible to suppress the formation of a low-rigidity region between the front frame and the reinforcing portion in the front-rear direction, thereby improving the protection of the occupant.

Moreover, it is preferable that the reinforcing portion is formed at a position overlapping the front frame in the vertical direction.
According to the above configuration, the reinforcing portion curves toward the rear of the cushion side frame and extends upward, so that the rigidity of the cushion side frame in the vertical direction can be increased, and the occupant protection can be improved. Become.

Further, it is preferable that the front frame is arranged at a position behind the pan frame in the front-rear direction.
According to the above configuration, the pan frame increases the rigidity of the front side of the cushion side frame. The rigidity of the rear side of the pan frame is increased by the front frame. In addition, the rear part of the front frame is stiffened by reinforcements. This makes it possible to increase the rigidity over the entire length of the cushion side frame.
Moreover, the manufacturing cost of the cushion side frame can be suppressed more than when the reinforcing portion is formed over the entire length of the cushion side frame. As a result, it is possible to achieve both improvement in occupant protection and cost reduction.

In addition, the flange has a curved portion that bulges outward in the horizontal direction from an edge portion in the vertical direction and is bent inward, and a flat portion that extends substantially horizontally inward in the horizontal direction. , The reinforcing portion is preferably formed in the bent portion and the flat portion.
According to the above configuration, the reinforcing portion can be formed over a wider area. As a result, the reinforcing effect can be enhanced, and the protection of the occupant can be improved.

ADVANTAGE OF THE INVENTION According to this invention, while being able to raise the rigidity of a cushion side frame effectively, a manufacturing cost can be suppressed. As a result, it is possible to achieve both improvement in occupant protection and cost reduction.

Moreover, it becomes possible to increase the rigidity over the entire length of the cushion side frame.

In addition, the rigidity of the cushion side frame can be increased up to the front end of the reinforcing portion, and the occupant protection can be improved.

In addition, the rigidity in the vertical direction of the cushion side frame can be increased, and the occupant protection can be improved.

In addition, it is possible to enhance the reinforcing effect of the reinforcing portion and improve the protection of the occupant.

1 is an explanatory diagram of the basic configuration of a vehicle seat according to an embodiment of the present invention; FIG. 1 is a perspective view of a vehicle seat frame according to one embodiment of the present invention; FIG. FIG. 4 is a diagram of the height adjustment mechanism as seen from the inside in the left-right direction, showing a state where the vehicle seat is positioned at the top. FIG. 4 is a view of the height adjustment mechanism as seen from the inside in the left-right direction, showing a state where the vehicle seat is positioned at the lowest position; FIG. 4 is an explanatory diagram of a reinforcing portion of a cushion side frame; FIG. 5 is a cross-sectional view taken along line VV of FIG. 4; It is a perspective view of a reinforcement part, Comprising: It is a principal part enlarged view. It is explanatory drawing of the reinforcement part which concerns on a 1st modification. It is explanatory drawing of the reinforcement part which concerns on a 2nd modification.

A vehicle seat according to an embodiment of the present invention (hereinafter referred to as the present embodiment) will be described below with reference to FIGS. 1 to 6. FIG.

This embodiment is a vehicle seat provided with a seat cushion frame, wherein the seat cushion frame includes left and right cushion side frames extending in the front-rear direction, and left and right cushion side frames positioned in front of the cushion side frames. and a pan frame that connects the left and right cushion side frames, and the cushion side frames are formed on vertical edges of the cushion side frames and extend forward and backward along the cushion side frames. The present invention relates to a vehicle seat characterized by having a flange formed therein and a reinforcing portion formed in a portion of the flange positioned rearward of the pan frame. In the following embodiments, a case where the vehicle seat according to the present invention is applied to a vehicle seat will be described as an example.

In the following description, the term "front-rear direction" means the front-rear direction when viewed from the person seated in the vehicle seat, and is the direction that coincides with the running direction of the vehicle. The "seat width direction" means the width direction of the vehicle seat, and coincides with the left-right direction when viewed from the person seated in the vehicle seat. Further, hereinafter, the term "left" refers to the left when viewed from the seated person, and similarly, the term "right" refers to the right when viewed from the seated person. Further, the "height direction" means the height direction of the vehicle seat, and coincides with the vertical direction when the vehicle seat is viewed from the front.

<<Main Configuration of Vehicle Seat S1>>
First, based on FIG. 1, the basic configuration of the vehicle seat S1 according to the present embodiment will be described. As shown in FIG. 1, the vehicle seat S1 has a seat cushion S2, a seat back S3, and a headrest S4.
The seat cushion S2 is constructed by covering a seat cushion frame 10 (see FIG. 2) with a pad and a skin material. The seatback S3 is constructed by covering a seatback frame 20 (see FIG. 2) with a pad and a skin material. The headrest S4 is configured by covering a headrest frame (not shown) with a pad and an upholstery material.

As shown in FIG. 2, the vehicle seat S1 has a vehicle seat frame 1 as its skeleton. The vehicle seat frame 1 includes a seat cushion frame 10, a seat back frame 20, and a connection bracket 30 as main components.
The vehicle seat frame 1 is fixed via a height adjustment mechanism 40 to an upper rail UR of a slide rail mechanism that slides the vehicle seat S1 in the longitudinal direction.

The seat cushion frame 10 has a cushion side frame 11 as a side frame, a pan frame 12, a front pipe 13 and a rear pipe 14 as connecting pipes.

The cushion side frames 11 are arranged on the left and right sides of the seat cushion frame 10 one by one. Each cushion side frame 11 extends in the front-rear direction.

An actuator 15 for operating a movable portion (a driving link 41 and a driven link 42 described later) of the height adjustment mechanism 40 is attached to the outer side surface of the left cushion side frame 11 .

The pan frame 12 is constructed across the front portions of the left and right cushion side frames 11 . The pan frame 12 connects the left and right cushion side frames 11 while being joined to the upper and side surfaces of the cushion side frames 11 . The pan frame 12 is joined to the cushion side frame 11 at a pan frame joining portion 112a (see FIG. 4), and serves to increase the rigidity of the cushion side frame 11 against the impact of a rear-end collision.

The front pipe 13 is a pipe-shaped body interposed between the left and right cushion side frames 11 at a position on the front side of the cushion side frame 11 and on the rear side of the pan frame 12 . The front pipe 13 connects the left and right cushion side frames 11 . The front pipe 13 does not necessarily have to be a pipe-like body, and may be a plate-like body, for example. The front pipe 13 plays a role of increasing the rigidity of the cushion side frame 11 together with the pan frame 12 . The front pipe 13 corresponds to a front frame.

The rear pipe 14 is a pipe-shaped body interposed between the left and right cushion side frames 11 on the rear side of the cushion side frame 11 . The rear pipe 14 connects the left and right cushion side frames 11 . The rear pipe 14 does not necessarily have to be a pipe-like body, and may be a plate-like body, for example.

Next, the seat back frame 20 has a back side frame 21, an upper frame 22 and a lower frame 23. As shown in FIG. The back side frame 21, the upper frame 22, and the lower frame 23 consist of plate-shaped members.
The back side frames 21 are arranged on the left and right sides of the seat back frame 20 one by one. The back side frame 21 extends vertically.

The upper frame 22 connects upper ends of the left and right back side frames 21 . The lower frame 23 connects the lower ends of the left and right back side frames 21 . The upper frame 22 and the lower frame 23 extend in the left-right direction.

The connection bracket 30 is attached to the rear end portion of the cushion side frame 11 and the lower end portion of the back side frame 21 . The connection brackets 30 are arranged one by one on the left and right, and connect the back side frame 21 to the cushion side frame 11 so as to be rotatable.

<<Regarding the height adjustment mechanism 40>>
The height adjustment mechanism 40 will be described below with reference to FIGS. 3A and 3B. 3A and 3B are diagrams of the height adjustment mechanism 40 viewed from the inside in the left-right direction.
The height adjustment mechanism 40 is arranged between the seat cushion frame 10 and the upper rail UR in the vertical direction. Then, when the occupant performs a height adjustment operation (for example, an operation of pressing an elevation button (not shown)), the movable portion of the height adjustment mechanism 40 is operated by the actuator 15 . Thereby, the height of the vehicle seat S1 including the seat cushion S2 is adjusted.

The height adjustment mechanism 40 has a driving link 41 positioned at the rear and a driven link 42 positioned at the front. The driving link 41 and the driven link 42 form a pair to adjust the height of the vehicle seat S1.

The driving link 41 is made of a metal plate member and has an elongated shape. One longitudinal end of the driving link 41 is supported on the upper rail UR so as to be swingable around a first swing shaft 41a. The other end in the longitudinal direction of the main drive link 41 is connected to the actuator 15 via a gear (not shown) and attached to the cushion side frame 11 so as to be capable of swinging around the second swing shaft 41b. there is

The driven link 42 is made of a metal plate member and has an elongated shape. The driven link 42 is a link member that swings following the swinging motion of the driving link 41 . One end of the driven link 42 in the longitudinal direction is supported on the upper rail UR so as to be swingable about a third swing shaft 42a. The other end of the driven link 42 in the longitudinal direction is attached to the cushion side frame 11 so as to be swingable around a fourth swing shaft 42b.

The operation of the height adjustment mechanism 40 configured as described above will be described. When the occupant who is seated in the seat executes a height adjustment operation, the actuator 15 is driven, and the driving link 41 meshed via the gear. Then, the driven link 42 paired with the driving link 41 swings. Thereby, the cushion side frame 11 moves up and down between the raised position shown in FIG. 3A and the lowered position shown in FIG. 3B, and the height of the vehicle seat S1 is adjusted.

<<About the cushion side frame 11>>
Next, the cushion side frame 11 will be described with reference to FIGS. 4 and 5. FIG.
FIG. 4 shows a side view of the cushion side frame 11 as seen from the outside in the left-right direction. The cushion side frame 11 includes a plate-shaped frame body 111 extending in the front-rear direction, an upper flange 112 extending in the front-rear direction at the upper edge of the frame body 111, a lower flange 113 extending in the front-rear direction at the lower edge of the frame body 111, have.

The frame body 111 has a first connecting hole 114 connected to the front pipe 13, a second connecting hole 115 connecting to the second swing shaft 41b, and a third connecting hole connecting to the rear pipe 14 and the fourth swing shaft 42b. 116 and are formed. A bracket fixing hole 117 for fixing the connecting bracket 30 is formed on the rear side of the frame main body 111 .

The upper flange 112 is formed along the entire longitudinal length of the frame body 111 at the upper edge of the frame body 111 . The upper flange 112 fixes the pan frame 12 while being joined to the pan frame 12 at the pan frame joining portion 112a on the front side thereof.

The lower flange 113 is formed along the entire longitudinal length of the frame body 111 at the lower edge of the frame body 111 . The lower flange 113 has a curved portion 113b that curves upward on its rear side. The rear end portion 113c of the lower flange 113 is positioned at the upper end of the curved portion 113b. A rear end portion 113c of the lower flange 113 is formed at a position overlapping the front pipe 13 in the height direction.

FIG. 5 shows a VV cross-sectional view of FIG. As shown in FIG. 5, the upper flange 112 has a bent portion 112b and a flat portion 112c. The bent portion 112b bulges outward in the left-right direction from the upper edge of the frame main body 111 and bends so as to be folded back inward in the left-right direction. The flat portion 112c extends substantially horizontally inward in the left-right direction from the bent portion 112b.

Like the upper flange 112, the lower flange 113 has a bent portion 113d and a flat portion 113e. The bent portion 113d bulges outward in the left-right direction from the lower edge of the frame body 111 and is bent inward in the left-right direction. The flat portion 113e extends substantially horizontally inward in the left-right direction from the bent portion 113d.

Returning to FIG. 4, the cushion side frame 11 is joined to the pan frame 12 on the front side, and the pan frame 12 increases the rigidity. A front pipe 13 is interposed on the rear side of the pan frame 12 between the left and right cushion side frames 11, and the front pipe 13 increases the rigidity. In other words, the cushion side frame 11 has, on its front side, a reinforced region R1 whose rigidity is increased by the pan frame 12 and the front pipe 13 .

The reinforced region R1 is joined to the pan frame 12 and formed by interposing the front pipe 13, but is not limited to this. For example, the reinforced region R1 may be formed by subjecting the cushion side frame 11 to bead processing (stringing processing). Alternatively, the cushion side frame 11 may be provided with a reinforcing structure such as a honeycomb-shaped concave-convex structure.
The reinforced region R1 has sufficient rigidity against impact in the front-rear direction. Therefore, even if a reinforcing portion 118, which will be described later, is formed in the reinforcing region R1 in order to improve the protection of the occupant, its effect is limited.

The cushion side frame 11 has a reinforcing region R2 at a position different from the reinforcing region R1. The reinforcing region R2 is formed behind the reinforcing region R1. A reinforcing portion 118 is formed in the reinforcing region R2. In other words, the reinforcing region R2 is a region where the rigidity of the cushion side frame 11 can be effectively improved by forming the reinforcing portion 118. As shown in FIG.

By forming the reinforcing portion 118 in the reinforcing region R2, the occupant protection can be effectively improved. On the other hand, no reinforcement portion 118 is formed in the reinforcement region R1. As a result, the manufacturing cost of the cushion side frame 11 can be reduced compared to the case where the reinforcing portion 118 is formed over the entire length of the cushion side frame 11 .

<<Regarding the reinforcing portion 118>>
Next, the reinforcing portion 118 will be described.
The reinforcing portion 118 is formed on a part of the upper flange 112 and the lower flange 113 . Specifically, the reinforcing portion 118 is formed in the reinforcing region R2 of the upper flange 112 extending in the front-rear direction. In other words, the reinforcing portion 118 is formed in a portion of the upper flange 112 that is located rearward of the pan frame 12 .

Further, the reinforcement portion 118 is formed in the reinforcement region R2 of the lower flange 113 extending in the front-rear direction. In other words, the reinforcing portion 118 is formed in a portion of the lower flange 113 located rearward of the pan frame 12 .

A front end portion 118a of the reinforcing portion 118 formed on the upper flange 112 and a front end portion 118a of the reinforcing portion 118 formed on the lower flange 113 are positioned at the same position in the front-rear direction and are located on the rear side of the reinforcing region R1. is formed in As a result, the rigidity of the cushion side frame 11 can be preferably increased up to the rear side of the reinforcing region R1 (the front end portion 118a of the reinforcing portion 118).

The reinforcing portion 118 is formed by embossing the upper flange 112 and the lower flange 113 . In other words, the reinforcing portion 118 is in a state of being work hardened by embossing.
FIG. 6 is a partially enlarged view of the flat portion 112c of the upper flange 112 on which the reinforcing portion 118 is formed. As shown in FIG. 6, the flat portion 112c is formed with a plurality of circular protrusions 118b that are regularly arranged at predetermined intervals. By forming a plurality of regularly arranged protrusions 118b in this manner, a uniform reinforcing effect can be produced for the upper flange 112 and the lower flange 113 without unevenness.

Here, the shape of the convex portion 118b is not limited to the circular shape shown in FIG. The convex portion 118b may have a polygonal shape. For example, the reinforcing portion 118 may have a hexagonal pattern due to the convex portion 118b having a regular hexagonal shape.

The reinforcing portion 118 is formed on the bent portion 112b and the flat portion 112c of the upper flange 112. As shown in FIG. By forming the reinforcing portion 118 on both the bent portion 112b and the flat portion 112c of the upper flange 112, the reinforcing portion 118 can be formed over a wider area. This makes it possible to enhance the reinforcing effect of the reinforcing portion 118 .
Similarly, the reinforcing portion 118 is formed on the bent portion 113d and the flat portion 113e of the lower flange 113. As shown in FIG. By forming the reinforcing portion 118 on both the bent portion 113d and the flat portion 113e of the lower flange 113, the reinforcing portion 118 can be formed over a wide area. This makes it possible to enhance the reinforcing effect of the reinforcing portion 118 .

Alternatively, the reinforcing portion 118 may be formed by performing a hardening treatment on the upper flange 112 and the lower flange 113 . For hardening, for example, induction hardening or laser hardening can be adopted.
Further, the reinforcing portion 118 may be formed by providing reinforcing ribs to the upper flange 112 and the lower flange 113 . Further, the reinforcing portion 118 may be formed by increasing the plate thickness of the upper flange 112 and the lower flange 113 .

Returning to FIG. 4, the reinforcing portion 118 formed on the lower flange 113 extends rearward, bends at the curved portion 113b, and extends upward in the reinforcing region R2. The rear end portion 113c is formed at a position overlapping the front pipe 13 in the vertical direction. As a result, the rigidity in the vertical direction of the cushion side frame 11 can be increased, and the occupant protection can be enhanced.

<<First Modification>>
Although the configuration of the vehicle seat S1 according to one embodiment of the present invention has been described above, the above-described embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. do not have. That is, the present invention can be modified and improved without departing from its spirit, and the present invention naturally includes equivalents thereof.

A reinforcing portion 118A according to the first modified example will be described with reference to FIG. In the above-described embodiment, the reinforcing portion 118 is formed at a position rearward of the rear end portion of the pan frame 12 and the front pipe 13 . On the other hand, the reinforcing portion 118A according to the first modified example is formed at a position overlapping the pan frame 12 and the front pipe 13 in the front-rear direction. As a result, the reinforced region R1 whose rigidity is increased by the pan frame 12 and the front pipe 13 and the reinforced region R2 whose rigidity is increased by the reinforcing portion 118A can partially overlap. Therefore, it becomes possible to increase the rigidity over the entire length of the cushion side frame 11 .

<<Second modification>>
Next, a reinforcing portion 118B according to a second modified example will be described with reference to FIG. In the embodiment described above, the reinforcing portion 118 is described as being formed in the upper flange 112 and the lower flange 113 . On the other hand, the reinforcing portion 118B according to the second modified example is formed only on the lower flange 113. As shown in FIG.
By forming the reinforcing portion 118B only on the lower flange 113 in this way, it is possible to increase the rigidity of the cushion side frame 11 and reduce the manufacturing cost of the cushion side frame 11 . As a result, it is possible to achieve both improvement in occupant protection and cost reduction.

<<Other Modifications>>
In the embodiment described above, the reinforced region R1 is formed in front of the cushion side frame 11, and the reinforced region R2 is formed behind the reinforced region R1. However, the present invention is not limited to this. The reinforced region R1 and the reinforced region R2 may be formed at different positions.
Further, the cushion side frame 11 may be formed with a plurality of reinforcing regions R1 and reinforcing regions R2.

Although the reinforcing portion 118 is formed on the bent portion 112b and the flat portion 112c of the upper flange 112 in the embodiment described above, the present invention is not limited thereto. The reinforcing portion 118 may be formed only on one of the bent portion 112b and the flat portion 112c. Similarly, the lower flange 113 has been described as having the reinforcing portion 118 formed on both the bent portion 113d and the flat portion 113e, but the reinforcing portion 118 may be formed on only one of them.
Further, the reinforcing portion 118 may be formed not only on the upper flange 112 and the lower flange 113 but also on the frame main body 111 .

In the above-described embodiment, the bent portion 112b of the upper flange 112 and the bent portion 113d of the lower flange 113 bulge outward in the left-right direction, but the present invention is not limited to this. The bent portions 112b and 113d may be bent inward in the left-right direction without bulging outward in the left-right direction from the frame main body 111 . Also, the upper flange 112 and the lower flange 113 may not have flat portions 112c and 113e, and may have only substantially C-shaped bent portions 112b and 113d.

In the above-described embodiment, the vehicle seat S1 used in an automobile was exemplified as the vehicle seat, but the present invention is not limited to this, and other vehicle seats such as ships and aircraft can be used. It can also be applied to sheets.

1 Vehicle seat frame 10 Seat cushion frame 11 Cushion side frame 111 Frame main body 112 Upper flange 112a Pan frame joint 112b Bent portion 112c Flat portion 113 Lower flange 113b Curved portion 113c Rear end portion 113d Bent portion 113e Flat portion 114 First connection Hole 115 Second connecting hole 116 Third connecting hole 117 Bracket fixing holes 118, 118A, 118B Reinforcing portion 118a Front end portion 118b Protruding portion 12 Pan frame 13 Front pipe (front frame)
14 Rear pipe 15 Actuator 20 Seat back frame 21 Back side frame 22 Upper frame 23 Lower frame 30 Connection bracket 40 Height adjustment mechanism 41 Main drive link 41a First swing shaft 41b Second swing shaft 42 Driven link 42a Third swing shaft 42b Fourth swing axis S1 Vehicle seat (vehicle seat)
S2 seat cushion S3 seat back S4 headrest UR upper rail R1 reinforced area R2 reinforced area

Claims (10)

A vehicle seat comprising a seat cushion frame,
The seat cushion frame includes left and right cushion side frames extending in the front-rear direction,
a pan frame that is installed in front portions of the left and right cushion side frames and connects the left and right cushion side frames,
The cushion side frame is
flanges formed at vertical edges of each of the cushion side frames and extending back and forth along the cushion side frames;
and a reinforcing portion formed in a portion of the flange located rearward of the pan frame. 2. The vehicle seat according to claim 1, wherein said reinforcing portion is formed only at a position rearward of said pan frame. 3. The vehicle seat according to claim 1, wherein the reinforcing portion is formed at a position overlapping with the pan frame in the front-rear direction. The flange has an upper flange extending longitudinally at the upper edge of the cushion side frame and a lower flange extending longitudinally at the lower edge of the cushion side frame,
The vehicle seat according to any one of claims 1 to 3, wherein the reinforcing portion is formed on the upper flange and the lower flange. 5. A front end portion of the reinforcing portion formed on the upper flange and a front end portion of the reinforcing portion formed on the lower flange are located at the same position in the front-rear direction. vehicle seat. The seat cushion frame includes a front frame interposed between the left and right cushion side frames on the front side of the cushion side frames and connecting the left and right cushion side frames,
The vehicle seat according to any one of claims 1 to 5, wherein the reinforcing portion is formed at a position behind the front frame. 7. The vehicle seat according to claim 6, wherein the reinforcing portion is formed at a position overlapping with the front frame in the front-rear direction. 8. The vehicle seat according to claim 6, wherein the reinforcing portion is formed at a position overlapping the front frame in the vertical direction. The vehicle seat according to any one of claims 6 to 8, wherein the front frame is arranged at a position behind the pan frame in the front-rear direction. The flange has a bent portion that bulges outward in the horizontal direction from an edge portion in the vertical direction and is bent inward, and a flat portion that extends substantially horizontally inward in the horizontal direction,
10. The vehicle seat according to any one of claims 1 to 9, wherein the reinforcing portion is formed on the bent portion and the flat portion.

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