JP2022187383A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat configured so that a state of a component arranged lower than a pressure receiving member can be confirmed.SOLUTION: A vehicular seat S comprises a seat frame F. The seat frame F comprises: a pair of side frames 21 and 21 arranged at left and right sides of the seat frame F; a pan frame 24 arranged to bridge a gap between the pair of side frames 21 and 21, in front of the seat frame F; a pressure receiving member 25 formed of a plate-like member and arranged rearward of the pan frame 24 and arranged to bridge a gap between the pair of side frames 21 and 21, which is arranged with a space SP at a predetermined interval L from the pan frame 24; and a front-side connection member 22, arranged below the space SP, which connects the pair of side frames 21 and 21 to each other.SELECTED DRAWING: Figure 3

Description

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

A vehicle seat includes a seat cushion, a seat back, and a headrest, and the seat back and the seat cushion are provided with a seat frame forming a skeleton of each.
Further, the seat cushion is provided with a pressure receiving member that receives a load when an occupant is seated. Conventionally, the pressure-receiving member has been fixed by molding the pressure-receiving member from a wire and resin, and hooking the wire to a seat cushion frame forming the skeleton of the seat cushion.

In recent years, press-molded plate-shaped pressure receiving members have been used so as to ensure the comfort of a seated person and to facilitate manufacturing. For example, Patent Literature 1 discloses a structure in which a plate-shaped pressure receiving member (referred to as a cushion pan in the patent literature) made of a metal plate is molded and attached so as to bridge between frames of a seat cushion frame. .

JP 2018-64885 A

The pressure receiving member of Patent Document 1 is arranged immediately behind a front pan arranged in front of the seat cushion frame, and is made so as to cover the entire inside of the seat cushion frame. Since the entire upper side of the seat cushion frame is covered with the front pan and the pressure receiving member, there is a problem that it is difficult to check the state of the parts arranged under the front pan and the pressure receiving member.

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 in which the state of parts arranged below a pressure-receiving member formed of a plate material can be checked. .

The above-mentioned object is a vehicle seat provided with a seat frame, wherein the seat frame comprises a pair of side frames arranged on the left and right sides of the seat frame, and a bridge between the pair of side frames in front of the seat frame. an arranged pan frame; and a pressure-receiving member formed of a plate-shaped member, which is arranged rearward of the pan frame, arranged to bridge between the pair of side frames, and separated from the pan frame by a predetermined distance. and a front connecting member provided below the gap and connecting the pair of side frames.

By providing a gap of a predetermined distance from the pressure receiving member formed of a plate-shaped member, the state of the front connecting member provided below the gap can be confirmed from above. Since confirmation is facilitated, work efficiency is improved when assembling the vehicle seat.

According to the vehicle seat described above, the front end of the pressure receiving member may be positioned rearward of the rear end of the front connecting member.
Positioning the front end of the pressure receiving member behind the rear end of the connecting member makes it easier to check the state of the connecting member.

According to the above-described vehicle seat, the pressure receiving member includes a bottom portion provided at a position lower in height than the pair of side frames in the center portion in the seat width direction, and the pair of side frames extending from both sides of the bottom portion. and a side sloping portion that slopes upward toward the bottom, and the front end of the bottom portion and the front end of the side sloping portion are arranged on the same straight line.
With the above configuration, the pressure-receiving member fits the body shape of the seated person and can support the seated person over a wider area, thereby improving the comfort of sitting.
Further, by arranging the front end of the bottom portion and the front end of the side inclined portion in the same straight line, it becomes easier to check the state of the connection member below.

According to the vehicle seat described above, the bottom portion may have a forward slope portion that slopes upward toward the front connecting member.
With the above configuration, the pressure-receiving member fits the body shape of the seated occupant and can support the occupant over a wider area, thereby improving the comfort of the seated person.

According to the vehicle seat described above, the bottom portion may have a portion whose width increases toward the front connecting member.
With the above configuration, the pressure-receiving member fits the body shape of the seated occupant and can support the occupant over a wider area, thereby improving the comfort of the seated person.

According to the vehicle seat described above, the seat frame includes a rear connecting member that connects the pair of side frames to the rear of the pressure receiving member, and the rear end of the bottom of the pressure receiving member is connected to the rear connecting member. It is preferable that it is positioned below the member.
Positioning the rear end of the bottom portion of the pressure receiving member below the rear connecting member makes it easier to check the state of the rear connecting member from the front.

According to the vehicle seat described above, the upper end of the pressure receiving member may be positioned above the rear connecting member.
Since the upper end of the pressure receiving member is positioned above the rear connecting member, the pad member arranged on the pressure receiving member can be supported in a wider area, so that the sitting comfort can be improved.

Further, according to the vehicle seat described above, the pressure receiving member is preferably not in contact with the rear connecting member.
Since the pressure receiving member and the rear connecting member do not come into contact with each other, it is possible to suppress rubbing noise generated when the pressure receiving member and the rear connecting member rub against each other.

Further, according to the vehicle seat described above, a harness member may be arranged between the pressure receiving member and the front connecting member.
By arranging the harness member between the pressure receiving member and the front connecting member, the state of the harness member can be easily checked through the gap.

Further, according to the above vehicle seat, the pad member placed on the seat frame;
and a skin material covering the pad member.
By providing the seat frame with the pad member and the skin material covering the pad member, it is possible to give the seated person a good sitting feeling.

According to the vehicle seat of the present invention, a predetermined gap is provided between the seat and the pressure receiving member formed of a plate-like member, so that the state of the front connecting member provided below the gap can be checked from above. can be done. Since confirmation is facilitated, efficiency in assembling the vehicle seat is improved.
In addition, since the front end of the pressure receiving member is located behind the rear end of the connecting member, it becomes easier to check the state of the connecting member.
In addition, with the above configuration, the pressure receiving member fits the shape of the seated person when seated, and can be supported over a wider area, thereby improving the comfort of the seated person.
Further, by arranging the front end of the bottom portion and the front end of the side inclined portion in the same straight line, it becomes easier to check the state of the connection member below.
With the above configuration, the pressure-receiving member fits the body shape of the seated occupant and can support the occupant over a wider area, thereby improving the comfort of the seated person.
In addition, since the rear end of the bottom portion of the pressure member is positioned below the rear connecting member, the state of the rear connecting member can be easily confirmed from the front.
In addition, since the upper end of the pressure receiving member is positioned above the rear connecting member, the seated person is not directly supported by the rear connecting member, and the feeling of the pressure receiving member when seated is improved.
Further, since the pressure receiving member and the rear connecting member do not come into contact with each other, it is possible to suppress rubbing noise generated when the pressure receiving member and the rear connecting member rub against each other.
Further, by arranging the harness member between the pressure receiving member and the front connecting member, it becomes easier to check the state of the harness member through the gap.
In addition, by providing the seat frame with the pad member and the skin material covering the pad member, it is possible to provide the seated person with a good sitting feeling.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of the appearance of a vehicle seat according to an embodiment of the present invention, viewed obliquely from the front; Fig. 2 is a perspective view of the seat frame of the vehicle seat, viewed obliquely from the front; It is the figure which looked at the seat cushion frame from upper direction. FIG. 4 is a sectional view of the seat cushion frame taken along line IV-IV of FIG. 3; FIG. 4 is a cross-sectional view of the seat cushion frame taken along line VV of FIG. 3;

A configuration of a vehicle seat according to an embodiment of the present invention will be described below with reference to the drawings. However, the embodiments described below are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. That is, the present invention can be modified and improved without departing from its spirit, and the present invention includes equivalents thereof.
In addition, in the following description, the material, shape, and size of the seat component are merely specific examples, and do not limit the present invention.

In the following, as an example of a vehicle seat, a vehicle seat mounted in a vehicle will be cited, and an example of the configuration thereof will be described.
Further, in the following description, the term “front-rear direction” refers to the front-rear direction of the vehicle seat, which is the direction in which the vehicle travels. Further, the "seat width direction" is the width direction of the vehicle seat, and is the direction that coincides with the left-right direction viewed from the occupant seated on the vehicle seat. Further, the "vertical direction" is the vertical direction of the vehicle seat, and is the direction that coincides with the vertical direction when the vehicle is running on a horizontal plane. The term "outside" simply refers to the direction closer to the outside in the direction from the center of the vehicle seat unit to the outside, and the term "inside" refers to the direction closer to the center from the outside to the center of the vehicle seat unit. means the direction

Unless otherwise specified, the shape, position, posture, etc. of each part of the vehicle seat described below will be described assuming that the vehicle seat is in a seated state, which will be described later.

<Vehicle seat S>
A basic configuration of a vehicle seat (hereinafter referred to as a vehicle seat S) according to this embodiment will be described with reference to FIG. FIG. 1 is a perspective view of a vehicle seat S. For convenience of illustration, a part of the vehicle seat S in FIG.

The vehicle seat S is a seat that is placed on the floor of the vehicle body and on which an occupant of the vehicle sits. In this embodiment, the vehicle seat S is used as a front seat corresponding to a front seat of a vehicle. However, the vehicle seat S is not limited to this, and can also be used as a rear seat. It can also be used as an eye rear seat.

The vehicle seat S, as shown in FIG. The main component is a headrest 3 that supports the head of a seated person. The seat back 1 and the seat cushion 2 are connected so as to sandwich a reclining mechanism 7 (see FIG. 2). The reclining mechanism 7 allows the seat back 1 to rotate with respect to the seat cushion 2, and the tilt angle thereof can be adjusted.

<Seat frame F>
A seat frame F is provided in the vehicle seat S as shown in FIG. It is composed of a seat cushion frame 20 to be formed.
In the following, the configuration other than the seat cushion frame 20, such as the seat back frame 10, will be described first, and the details of the seat cushion frame 20 having the pressure receiving member 25 will be described after that.

<Seat back frame 10>
As shown in FIG. 2, the seat back frame 10 is formed in the shape of a square frame as a whole. a frame 13; The upper frame 12 is arranged between the pair of back side frames 11 and 11 and connects the upper ends of the pair of back side frames 11 and 11 . The lower frame 13 is arranged between the pair of back side frames 11 , 11 and connects the lower ends of the pair of back side frames 11 .
The upper frame 12 is provided with a headrest guide 14 through which the headrest stay 31 of the headrest 3 is inserted. The headrest guide 14 is formed as a strong metal member in order to maintain the holding strength of the headrest 3 and suppress rattling. Note that the headrest guide 14 is not limited to being made of metal, and may be made of resin.

The pair of back side frames 11, 11 are arranged on the left and right sides of the seat back frame 10 as described above, and are basically symmetrical members. The pair of back side frames 11, 11 are provided so as to extend in the vertical direction of the seat. The width of each of the pair of back side frames 11, 11 in the seat front-rear direction is formed so as to increase from the seat upper side toward the seat lower side. A peripheral edge portion on the front side of the seat and a peripheral edge portion on the rear side of the seat are formed in a curved shape so as to protrude toward the front side of the seat. A rear wall portion 11a extending inward in the seat width direction is formed on the peripheral edge portion of each of the pair of back side frames 11, 11 on the seat rear side.

<Headrest 3 and Headrest Frame 30>
The headrest 3 is attached to the upper part of the seat back 1 so as to support the head of the seated person. A headrest frame 30 that forms the skeleton of the headrest 3 is provided inside the headrest 3, and two headrest stays 31 (also called headrest pillars) that hang down from the lower part of the headrest 3 are provided at both left and right ends of the headrest frame 30. is provided. The headrest 3 is attached to the seatback frame 10 by inserting the headrest stay 31 into the headrest guide 14 attached to the upper frame 12 of the seatback frame 10 .

<Pad member P and skin material T>
A pad member P and a skin material T (cushion cover) are provided outside the seat back frame 10 , the seat cushion frame 20 and the headrest frame 30 to form the seat back 1 , the seat cushion 2 and the headrest 3 . The pad member P is, for example, a urethane base material formed by foam molding using a urethane foam material, and the skin material T is made of, for example, cloth, synthetic leather, genuine leather, or the like.

<Slide rail 4>
A slide rail 4 is installed below the vehicle seat S as shown in FIG. The slide rails 4 allow the vehicle seat S to be attached to the floor of the vehicle body so as to be slidable in the longitudinal direction.

The slide rail 4 is a device for sliding the vehicle seat S along the longitudinal direction, and has a known structure (structure of a general slide rail mechanism). The slide rail 4 has a lower rail 4a fixed on the vehicle body floor and an upper rail 4b slidable relative to the lower rail 4a. An upper rail 4b is slidable with respect to a lower rail 4a fixed to the vehicle body.

<Reclining mechanism 7>
A reclining mechanism 7 is provided between the lower end of the seat back 1 and the rear end of the seat cushion 2 . More specifically, the reclining mechanism 7 connects the seatback frame 10 of the seatback 1 and the seat cushion frame 20 of the seat cushion 2 . The reclining mechanism 7 makes it possible to adjust the angle of the seat back 1 (seat back frame 10) with respect to the seat cushion 2 (seat cushion frame 20). The reclining mechanism 7 allows the seat back 1 to be locked at a predetermined angle and maintained in an inclined state. Further, by releasing the lock, the seat back 1 can be laid down forward or backward.

The seat cushion frame 20 included in the vehicle seat S of this embodiment will be described below with reference to FIGS. 2 to 5. FIG. 2 is a perspective view of the seat frame, FIG. 3 is a top view of the seat cushion frame 20, and FIG. 4 is a sectional view of the seat cushion frame 20 taken along line IV--IV of FIG. 5 is a cross-sectional view of the seat cushion frame 20 taken along line VV of FIG. 3. FIG.

<Seat cushion frame 20>
As shown in FIG. 3, the seat cushion frame 20 is formed in a square frame shape in top view, and is provided with a pair of cushion side frames 21, 21 (a pair of side frames) on the left and right. The pair of cushion side frames 21, 21 are basically symmetrical members, and are provided to extend in the seat front-rear direction.

The seat cushion frame 20 includes a front connection frame 22 (front connection member) that connects the pair of cushion side frames 21, 21 on the front side, and a rear connection frame 23 (rear connection member) that connects the pair of cushion side frames 21 on the rear side. have. The front connection frame 22 and the rear connection frame 23 are made of round pipes. Further, a cushion pan frame 24 (pan frame) is provided in front of the front connection frame 22 . As will be described later, the front connection frame 22 is arranged below the gap SP formed between the cushion pan frame 24 and the pressure receiving member 25 .

<Pressure receiving member 25>
An example of the configuration of the pressure-receiving member 25 that constitutes the main part of this embodiment will be described in detail. As shown in FIGS. 2 and 3, the seat cushion frame 20 is provided with a pressure receiving member 25 that bridges between the pair of cushion side frames 21 , 21 .

The pressure receiving member 25 is a member formed by press-molding a plate-like member made of metal such as iron or aluminum. As shown in FIG. 2 , the pressure receiving member 25 has a downwardly recessed shape, and is configured to support the buttocks of an occupant seated on the vehicle seat S by the entire pressure receiving member 25 . The pressure-receiving member 25 is not limited to a plate-like member made of metal such as iron or aluminum, and may be made of a resin member such as FRP (fiber reinforced plastic).

More specifically, the pressure receiving member 25 has a bottom portion 26 provided at a position lower than the pair of cushion side frames 21, 21 in the center portion in the seat width direction. Moreover, it has lateral inclined portions 27 , 27 which are inclined upward from both sides of the bottom portion 26 toward the pair of cushion side frames 21 , 21 . In other words, the side inclined portions 27, 27 have a shape that is inclined such that the distance between them in the seat width direction increases as they go upward from both side portions of the bottom portion 26. As shown in FIG.
As shown in FIG. 3, the front end 26b of the bottom portion 26 and the front ends 27a of the side inclined portions 27, 27 are arranged on the same straight line to form the front end of the pressure receiving member 25. As shown in FIG.

4, the bottom portion 26 has a front inclined portion 26a that is inclined upward toward the front connection frame 22 arranged on the front side of the pressure receiving member 25. As shown in FIG. As shown in FIG. 3, the front inclined portion 26a is formed such that its width, that is, the length W in the seat width direction increases toward the front connection frame 22. As shown in FIG.

Since the pressure receiving member 25 has the bottom portion 26 and the side inclined portions 27, 27 formed as described above, it fits the body shape of the seated person. As a result, the pressure receiving member 25 can support the seated person over a wider area with the pad member P interposed therebetween as compared with the case where the pressure receiving member 25 is formed in a flat plate shape, thereby improving the comfort of sitting.

The pressure receiving member 25 is fixed to the cushion side frames 21, 21 at both sides thereof by a mechanical method using fastening members such as bolts 28 or rivets. The pressure-receiving member 25 and the cushion side frames 21, 21 may be fixed by welding, adhesive, or the like, without being limited to bolts or the like.

As shown in FIGS. 2 to 4, the pressure receiving member 25 and the cushion pan frame 24 are arranged with a gap SP of a predetermined distance L provided therebetween. This gap SP is located above the front connection frame 22 that connects the pair of cushion side frames 21 , 21 . That is, the front connection frame 22 is provided so as to be positioned below the gap SP.
Therefore, when assembling the vehicle seat S, the operator can check the state of the front connection frame 22 by looking at the seat cushion frame 20 from above.

Moreover, as shown in FIGS. 3 and 4, the front end of the pressure receiving member 25 is preferably positioned behind the rear end of the front connection frame 22 . Compared to the case where the front end of the pressure receiving member 25 overlaps the front connection frame 22, it is easier to check the state of the front connection frame 22.
In addition, since the bottom portion 26 of the pressure receiving member 25 has the front inclined portion 26a that is inclined upward toward the front connection frame 22, the state of the front connection frame 22 can be more easily confirmed.

In addition, the pressure receiving member 25 is arranged so as to be positioned in front of the rear side connection frame 23 that connects the pair of cushion side frames 21, 21 on the rear side. 4 and 5, the pressure receiving member 25 is formed such that the rear end of the bottom portion 26 of the pressure receiving member 25 is located below the rear connection frame 23. As shown in FIGS. Since the seatback 1 is arranged above the rear connection frame 23, it is difficult to check the rear connection frame 23 from above. Therefore, the state of the rear connection frame 23 is checked from the front of the seat. By positioning the rear end of the bottom portion 26 below the rear connection frame 23, when the rear connection frame 23 is viewed from the front of the seat, the rear connection frame is not obstructed by the bottom portion 26 of the pressure receiving member 25. 23 status can be confirmed.

4 and 5, the upper end of the pressure receiving member 25, that is, the side portion of the pressure receiving member 25 connected to the cushion side frames 21, 21 is positioned above the rear connection frame 23 as shown in FIGS. ing. On the other hand, as described above, the rear end of the bottom portion 26 of the pressure receiving member 25 is located below the rear connection frame 23 . By forming the pressure-receiving member 25 in this manner, a seated person can be supported over a wider area, and the comfort of sitting can be improved.

Further, the pressure receiving member 25 and the rear connection frame 23 are arranged with a space therebetween in the front-rear direction, and the pressure receiving member 25 is arranged so as not to contact the rear connection frame 23 . Since the pressure-receiving member 25 and the rear connection frame 23 do not come into contact with each other, rubbing noise between the pressure-receiving member 25 and the rear connection frame 23 can be suppressed.

An ECU 40 (Electro Control Unit) is arranged in the seat cushion 2 of the present embodiment. The ECU 40 is an electronic control unit that controls electrical components and driving devices provided in the vehicle seat S, such as a locking device and a reclining device. The ECU 40 is provided below the cushion pan frame 24 as shown in FIG. A harness member 41 extends from the ECU 40 for connection with electrical components and the like. 22. After reaching the left cushion side frame 21 , the harness member 41 is arranged to the rear of the vehicle seat S through the space formed below the lateral inclined portion 27 . Since the harness member 41 is arranged between the pressure receiving member 25 and the front connection frame 22, the state of the harness member 41 can be easily confirmed from above through the gap SP.

The vehicle seat S, which is an embodiment of the present invention, has been described above with reference to the drawings. The present invention is not limited to a vehicle seat S mounted on a ground vehicle having wheels such as automobiles and railways, and is, for example, a seat mounted on an aircraft or a ship that moves other than on the ground. may also apply.

S Vehicle seat (vehicle seat)
F seat frame T skin material P pad member SP gap 1 seat back 2 seat cushion 3 headrest 4 slide rail 4a lower rail 4b upper rail 7 reclining mechanism 10 seat back frame 11 back side frame 12 upper frame 13 lower frame 14 headrest guide 20 seat cushion Frame 21 Cushion side frame (side frame)
22 front connection frame (front connection member)
23 rear connection frame (rear connection member)
24 Cushion pan frame (pan frame)
25 pressure receiving member 26 bottom 26a forward inclined portion 26b front end 27 side inclined portion 27a front end 28 bolt 30 headrest frame 31 headrest stay 40 ECU
41 Harness member

Claims (10)

A vehicle seat comprising a seat frame,
The seat frame is
a pair of side frames arranged on the left and right sides of the seat frame;
a pan frame arranged to bridge between the pair of side frames in front of the seat frame;
A pressure-receiving member formed of a plate-like member, which is arranged rearward of the pan frame, arranged to bridge between the pair of side frames, and arranged with a predetermined gap between itself and the pan frame. a pressure-receiving member that
a front connecting member provided below the gap and connecting the pair of side frames;
A vehicle seat comprising: 2. The vehicle seat according to claim 1, wherein a front end of said pressure receiving member is positioned rearward of a rear end of said front connecting member. The pressure receiving member is
a bottom portion provided at a position lower than the pair of side frames in the center portion in the seat width direction;
a side slope portion that slopes upward from both side portions of the bottom portion toward the pair of side frames;
3. The vehicle seat according to claim 1, wherein the front end of the bottom portion and the front end of the side inclined portion are arranged in the same straight line. 4. The vehicle seat according to claim 3, wherein the bottom portion has a forward slope portion that slopes upward toward the front connecting member. 5. The vehicle seat according to claim 3, wherein the bottom portion has a portion that widens toward the front connecting member. the seat frame includes a rear connecting member that connects the pair of side frames to the rear of the pressure receiving member;
The vehicle seat according to any one of claims 3 to 5, wherein the rear end of the bottom portion of the pressure receiving member is positioned below the rear connecting member. 7. The vehicle seat according to claim 6, wherein the upper end of said pressure receiving member is located above said rear connecting member. 8. The vehicle seat according to claim 6, wherein the pressure receiving member is not in contact with the rear connecting member. The vehicle seat according to any one of claims 1 to 8, wherein a harness member is arranged between the pressure receiving member and the front connecting member. a pad member placed on the seat frame;
The vehicle seat according to any one of claims 1 to 9, further comprising a skin material covering the pad member.

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