Vehicle seat

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

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a seat frame.

Background Art

[0002] A vehicle seat includes a seat cushion, a seat back, and a headrest, and a seat frame forming the respective skeletons is provided in the seat back and the seat cushion. In addition, a pressure-receiving member that receives a load when an occupant sits is provided in the seat cushion. Conventionally, the pressure-receiving member was formed of a wire and resin, and the pressure-receiving member was fixed by hooking the wire on a seat cushion frame forming the skeleton of the seat cushion.

[0003] In recent years, in order to ensure the riding comfort of the seated person and enable easier manufacturing, a plate-shaped pressure-receiving member by press molding has been used. For example, Patent Document 1 discloses a structure in which a plate-shaped pressure-receiving member (referred to as a cushion pan in the patent document) made of a metal plate is molded and attached so as to bridge between frames of a seat cushion frame.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The pressure-receiving member in Patent Document 1 is disposed immediately behind the front pan that is disposed in front of the seat cushion frame, and is configured to cover the entire inside of the seat cushion frame. Since the front pan and the pressure-receiving member cover the entire upper side of the seat cushion frame, there has been a problem that it is difficult to check the state of the components disposed below the front pan and the pressure-receiving member.

[0006] The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle seat capable of checking the state of components disposed below a pressure-receiving member formed of a plate material.

Means for Solving the Problems

[0007] The above problems are solved by a vehicle seat including a seat frame, wherein the seat frame includes a pair of side frames disposed on the left and right of the seat frame, a pan frame disposed across between the pair of side frames in front of the seat frame, and a pressure-receiving member formed of a plate-like member, the pressure-receiving member being disposed behind the pan frame, bridging between the pair of side frames, and disposed with a gap having a predetermined interval between the pressure-receiving member and the pan frame, and a front connection member provided below the gap and connecting the pair of side frames. , the pressure-receiving member has a bottom portion provided at a position lower in height than the pair of side frames at the central portion in the sheet width direction, and side inclined portions that incline upward as they extend from both side portions of the bottom portion toward the pair of side frames. The front end of the bottom portion and the front end of the side inclined portion are arranged in a straight line. The seat frame includes a rear connecting member that connects the pair of side frames behind the pressure-receiving member. The rear end of the bottom portion of the pressure-receiving member is located below the rear connecting member, and the pressure-receiving member is not in contact with the rear connecting member. This solves the problem.

[0008] By providing a gap having a predetermined interval between the pressure-receiving member formed of a plate-like member, the state of the front connection member provided below the gap can be checked from above. Since the check becomes easy, the work efficiency at the time of assembling the vehicle seat is improved. In addition, with the above configuration, the pressure-receiving member conforms to the body shape of the seated person and can support the person over a larger area, thus improving the sitting comfort when seated. In addition, by arranging the front end of the bottom portion and the front end of the side inclined portion in a straight line, it becomes easier to check the state of the connecting member below. In addition, since the rear end of the bottom portion of the pressure-receiving member is located below the rear connecting member, it becomes easier to check the state of the rear connecting member from the front. In addition, since the pressure-receiving member and the rear connecting member are not in contact with each other, it is possible to suppress the rubbing noise generated when the pressure-receiving member and the rear connecting member rub against each other.

[0009] According to the above vehicle seat, the front end of the pressure-receiving member may be located behind the rear end of the front connection member. Since the front end of the pressure-receiving member is located behind the rear end of the connecting member, the state of the connecting member becomes easier to check.

[0011] According to the vehicle seat described above, it is preferable that the bottom portion has a front inclined portion that inclines upward as it approaches the front side connecting member. With the above configuration, the pressure-receiving member conforms to the body shape when the seated person sits, and can support the seated person over a wider area, so the sitting comfort during sitting is improved.

[0012] According to the vehicle seat described above, it is preferable that the bottom portion has a portion that widens as it approaches the front side connecting member. With the above configuration, the pressure-receiving member conforms to the body shape when the seated person sits, and can support the seated person over a wider area, so the sitting comfort during sitting can be improved.

[0014] According to the vehicle seat described above, it is preferable that the upper end of the pressure-receiving member is located above the rear side connecting member. Since the upper end of the pressure-receiving member is located above the rear side connecting member, the pad member disposed on the pressure-receiving member can be supported over a wider area, so the sitting comfort during sitting can be improved.

[0016] Further, according to the vehicle seat described above, it is preferable that a harness member is disposed between the pressure-receiving member and the front side connecting member. By disposing a harness member between the pressure-receiving member and the front side connecting member, the state of the harness member can be easily checked through the above gap.

[0017] Further, according to the vehicle seat described above, it is preferable to include a pad member placed on the seat frame and a skin material that covers the pad member. By providing a pad member on the seat frame and a skin material that covers the pad member, a good sitting feeling can be given to the seated person.

Advantages of the Invention

[0018] According to the vehicle seat of the present invention, by providing a gap with a predetermined interval between the pressure receiving member formed of a plate-like member, the state of the front connection member provided below the gap can be confirmed from above. Since the confirmation becomes easy, the efficiency of assembling the vehicle seat is improved. Further, since the front end of the pressure receiving member is located behind the rear end of the connection member, the state of the connection member becomes easier to confirm. Further, with the above configuration, the pressure receiving member conforms to the shape when the seated person sits, and can support with a wider area, so the sitting comfort when sitting is improved. Further, by arranging the front end of the bottom and the front end of the side inclined portion in a straight line, the state of the connection member below becomes easier to confirm. With the above configuration, the pressure receiving member conforms to the body shape when the seated person sits, and can support the seated person with a wider area, so the sitting comfort when sitting can be improved. Further, since the rear end of the bottom of the pressure member is located below the rear connection member, the state of the rear connection member can be easily confirmed from the front. Further, since the upper end of the pressure receiving member is located above the rear connection member, the seated person is not directly supported by the rear connection member, and the feel of the pressure receiving member when sitting is improved. Further, since the pressure receiving member and the rear connection member do not contact each other, the rubbing noise generated when the pressure receiving member and the rear connection member rub against each other can be suppressed. Further, by arranging a harness member between the pressure receiving member and the front connection member, the state of the harness member can be easily confirmed through the above gap. Further, by providing a skin material that covers the pad member and the pad member on the seat frame, a good sitting feeling can be given to the seated person.

Brief Description of Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0020] Hereinafter, the configuration of the vehicle seat according to an embodiment of the present invention will be described with reference to the drawings. However, the embodiments described below are for facilitating the understanding of the present invention and do not limit the present invention. That is, the present invention can be changed and improved without departing from its gist, and it goes without saying that equivalents of the present invention are included therein. In addition, in the following description, the content regarding the material, shape, and size of the seat component parts is merely one specific example and does not limit the present invention.

[0021] In the following, as an example of the vehicle seat, a vehicle seat mounted on a vehicle will be cited, and its configuration example will be described. In addition, in the following description, the "front-rear direction" refers to the front-rear direction of the vehicle seat and coincides with the traveling direction when the vehicle is running. The "seat width direction" refers to the lateral width direction of the vehicle seat and coincides with the left-right direction as seen from the occupant sitting on the vehicle seat. The "vertical direction" refers to the vertical direction of the vehicle seat and coincides with the vertical direction when the vehicle is traveling on a horizontal plane. Also, when simply referring to the "outside", it refers to the side closer to the outside in the direction from the center of the vehicle seat alone, and when referring to the "inside", it means the side closer to the center in the direction from the outside to the center of the vehicle seat alone.

[0022] Regarding the shape, position, posture, etc. of each part of the vehicle seat described below, unless otherwise specified, the case where the vehicle seat is in the sitting state described later will be assumed for the description.

[0023] <Vehicle seat S> The basic configuration of the vehicle seat (hereinafter referred to as vehicle seat S) according to the present embodiment will be described with reference to FIG. 1. FIG. 1 is a perspective view of the vehicle seat S. For a part of the vehicle seat S in FIG. 1, for the sake of illustration, it is shown in a configuration in which the skin material T and the pad member P are removed.

[0024] The vehicle seat S is a seat that is placed on the vehicle body floor and on which a vehicle occupant sits. In the present embodiment, the vehicle seat S is used as a front seat corresponding to the front seat of the vehicle. However, it is not limited to this, and the vehicle seat S can also be used as a seat for the rear seat, and can also be used as a middle seat for the second row or a rear seat for the third row in a vehicle equipped with three rows of seats in the front-rear direction.

[0025] As shown in FIG. 1, the vehicle seat S mainly includes a seat back 1 that serves as a backrest portion for supporting the back of the seated person, a seat cushion 2 that serves as a seating portion for supporting the buttocks of the seated person, and a headrest 3 that is arranged above the seat back 1 and supports the head of the seated person. The seat back 1 and the seat cushion 2 are connected so as to sandwich a reclining mechanism 7 (see FIG. 2). By the reclining mechanism 7, the seat back 1 can rotate with respect to the seat cushion 2, and its tilt angle can be adjusted.

[0026] <Seat frame F> As shown in FIG. 2, a seat frame F is provided in the vehicle seat S. The seat frame F is composed of a seat back frame 10 that forms the skeleton of the seat back 1 and a seat cushion frame 20 that forms the skeleton of the seat cushion 2. First, the components other than the seat cushion frame 20, such as the seat back frame 10, will be described below. Details of the seat cushion frame 20 having the pressure receiving member 25 will be described later.

[0027] <Seat back frame 10> As shown in FIG. 2, the seat back frame 10 is formed in a rectangular frame shape as a whole. The seat back frame 10 includes a pair of back side frames 11, 11 arranged on the left and right, an upper frame 12, and a lower frame 13. The upper frame 12 is arranged between the pair of back side frames 11, 11 and connects the upper ends of the pair of back side frames 11, 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 member made of metal with high strength 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.

[0028] The pair of back side frames 11, 11 are arranged on the left and right of the seat back frame 10 as described above, and are members having a basically symmetric configuration. The pair of back side frames 11, 11 are provided so as to extend in the seat up and down direction. The width of each of the pair of back side frames 11, 11 in the seat front and rear direction is formed so as to widen from the upper side of the seat toward the lower side of the seat. The peripheral edge portion on the front side of the seat and the 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 at the peripheral edge portion on the rear side of each of the pair of back side frames 11, 11.

[0029] <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. Inside the headrest 3, a headrest frame 30 that forms the skeleton of the headrest 3 is provided. At both left and right ends of the headrest frame 30, two headrest stays 31 (also called headrest pillars) that hang down from the lower part of the headrest 3 are provided. The headrest 3 is attached to the seat back frame 10 by the headrest stays 31 being inserted into headrest guides 14 attached to the upper frame 12 of the seat back frame 10.

[0030] <Pad member P and skin material T> On the outside of the seat back frame 10, the seat cushion frame 20, and the headrest frame 30, a pad member P and a skin material T (cushion cover) are provided, thereby constituting the seat back 1, the seat cushion 2, and the headrest 3. The pad member P is a urethane base material molded by foam molding using, for example, urethane foam, and the skin material T is made of, for example, cloth, synthetic leather, or genuine leather.

[0031] <Slide rail 4> Also, as shown in FIG. 2, a slide rail 4 is installed at the lower part of the vehicle seat S. By this slide rail 4, the vehicle seat S is attached to the vehicle body floor in a state where it can slide in the front-rear direction.

[0032] The slide rail 4 is a device for sliding the vehicle seat S along the front-rear direction and has a known structure (the 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 that is slidable with respect to the lower rail 4a. The upper rail 4b is slidable with respect to the lower rail 4a fixed to the vehicle body.

[0033] <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 seat back frame 10 of the seat back 1 and the seat cushion frame 20 of the seat cushion 2. The reclining mechanism 7 enables adjustment of the angle of the seat back 1 (seat back frame 10) with respect to the seat cushion 2 (seat cushion frame 20). By means of the reclining mechanism 7, the seat back 1 can be locked at a predetermined angle and maintained in an inclined state. Also, by releasing the lock, the seat back 1 can be reclined forward or backward.

[0034] Hereinafter, the seat cushion frame 20 included in the vehicle seat S of the present embodiment will be described with reference to FIGS. 2 to 5. FIG. 2 is a perspective view of the seat frame, FIG. 3 is a view of the seat cushion frame 20 as seen from above, FIG. 4 is a cross-sectional view of the seat cushion frame 20 taken along line IV-IV of FIG. 3, and FIG. 5 is a cross-sectional view of the seat cushion frame 20 taken along line V-V of FIG. 3.

[0035] <Seat Cushion Frame 20> As shown in FIG. 3, the seat cushion frame 20 is formed in a rectangular frame shape in a top view, and a pair of cushion side frames 21, 21 (a pair of side frames) are provided on the left and right. The pair of cushion side frames 21, 21 are members having a basically bilaterally symmetric configuration and are provided so as to extend in the front-rear direction of the seat.

[0036] Further, the seat cushion frame 20 has a front connection frame 22 (front connection member) that connects a pair of cushion side frames 21, 21 on the front side, and a rear connection frame 23 (rear connection member) that connects them on the rear side. 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 disposed below the gap SP formed between the cushion pan frame 24 and the pressure receiving member 25.

[0037] <pressure receiving member 25> An example of the configuration of the pressure receiving member 25 that constitutes the main part of the present 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 is disposed so as to bridge between a pair of cushion side frames 21, 21.

[0038] The pressure receiving member 25 is a member formed by press-molding a plate-like member made of a metal such as iron or aluminum. As shown in FIG. 2, the pressure receiving member 25 has a downwardly concave shape and is configured to support the buttocks of an occupant sitting on the vehicle seat S with the entire pressure receiving member 25. Note that the pressure receiving member 25 is not limited to a plate-like member made of a metal such as iron or aluminum, and may be formed from a resin member such as FRP (fiber reinforced plastic).

[0039] More specifically, the pressure receiving member 25 has a bottom portion 26 provided at a position lower in height than a pair of cushion side frames 21, 21 at the central portion in the seat width direction. Further, from both side portions of the bottom portion 26, there are provided side inclined portions 27, 27 that incline upward as they go toward the pair of cushion side frames 21, 21. In other words, the side inclined portions 27, 27 have a shape that inclines 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. Then, 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 in a straight line and constitute the front end of the pressure receiving member 25.

[0040] Further, as shown in FIG. 4, the bottom portion 26 has a front inclined portion 26a that inclines upward as it goes toward the front connection frame 22 disposed on the front side of the pressure receiving member 25. Further, 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, becomes wider as it goes toward the front connection frame 22.

[0041] Since the pressure receiving member 25 has the bottom portion 26 and the side inclined portions 27, 27 formed as described above, it conforms to the body shape of the seated person when sitting. Thereby, the pressure receiving member 25 can support the seated person over a wider area through the pad member P as compared with the case of being formed in a flat plate shape, and the sitting comfort during sitting is improved.

[0042] Further, the pressure receiving member 25 is fixed at both its side portions by a mechanical method using fastening members such as the cushion side frames 21, 21 and bolts 28 or rivets. It is not limited to bolts or the like, and the pressure receiving member 25 and the cushion side frames 21, 21 may be fixed using welding or an adhesive or the like.

[0043] As shown in FIGS. 2 to 4, the pressure receiving member 25 is disposed with a gap SP having a predetermined interval L between it and the cushion pan frame 24. 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 located 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.

[0044] Further, as shown in FIGS. 3 and 4, the front end of the pressure receiving member 25 is preferably located behind the rear end of the front connection frame 22. As compared with the case where the front end of the pressure receiving member 25 overlaps the front connection frame 22, the state of the front connection frame 22 becomes easier to check. In addition, since the bottom portion 26 of the pressure receiving member 25 has a forward inclined portion 26a that inclines upward as it approaches the front connection frame 22, the state of the front connection frame 22 becomes easier to check.

[0045] In addition, the pressure receiving member 25 is arranged to be positioned in front of a rear connection frame 23 that connects a pair of cushion side frames 21, 21 at the rear side. And, as shown in FIGS. 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 positioned below the rear connection frame 23. Since the seat back 1 is arranged above the rear connection frame 23, it is difficult to check the rear connection frame 23 at the rear side from above. Therefore, for the rear connection frame 23, its state will be 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 state of the rear connection frame 23 can be checked without being obstructed by the bottom portion 26 of the pressure receiving member 25.

[0046] In addition, the upper end of the pressure receiving member 25, that is, the side portion of the pressure receiving member 25 that connects to the cushion side frames 21, 21, is arranged to be positioned above the rear connection frame 23 as shown in FIGS. 4 and 5. On the other hand, as described above, the rear end of the bottom portion 26 of the pressure receiving member 25 is positioned below the rear connection frame 23. By forming the pressure receiving member 25 in this way, a seated person can be supported over a wider area, and the sitting comfort is improved.

[0047] In addition, the pressure receiving member 25 and the rear connection frame 23 are arranged at intervals 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 contact each other, it is possible to suppress the rubbing noise between the pressure receiving member 25 and the rear connection frame 23.

[0048] In the seat cushion 2 of the present embodiment, an ECU 40 (Electoro Control Unit) is arranged. The ECU 40 is an electronic control unit that controls electrical components and drive devices provided in the vehicle seat S, such as a locking device and a reclining device. As shown in FIG. 5, the ECU 40 is provided below the cushion pan frame 24. A harness member 41 for connecting to electrical components and the like extends from the ECU 40, and the harness member 41 is arranged along the front connection frame 22 between the pressure receiving member 25 and the front connection frame 22 as shown in FIGS. 4 and 5. After reaching the left cushion side frame 21, the harness member 41 is arranged to the rear of the vehicle seat S through a space formed below the lateral inclination 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.

[0049] As described above, the vehicle seat S which is an embodiment of the present invention has been described with reference to the drawings. The present invention is not limited to the vehicle seat S mounted on a ground vehicle having wheels such as an automobile or a railway, and can also be applied to seats mounted on, for example, an aircraft or a ship that moves other than on the ground.

Explanation of reference numerals

[0050] S Vehicle seat (seat for vehicle) 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 Front inclined part 26b Front end 27 Side inclined part 27a Front end 28 Bolt 30 Headrest frame 31 Headrest stay 40 ECU 41 Harness member

Claims

1. A vehicle seat comprising a seat frame, wherein the seat frame includes a pair of side frames disposed on the left and right of the seat frame, a pan frame disposed across between the pair of side frames in front of the seat frame, a pressure-receiving member formed of a plate-like member, disposed behind the pan frame across between the pair of side frames, and disposed with a gap of a predetermined interval from the pan frame, a front connecting member provided below the gap and connecting the pair of side frames, and comprises the pressure-receiving member has a bottom portion provided at a position lower in height than the pair of side frames at the center in the seat width direction, and side inclined portions that incline upward from both sides of the bottom portion toward the pair of side frames, the front end of the bottom portion and the front end of the side inclined portion are arranged in a straight line, the seat frame includes a rear connecting member that connects the pair of side frames behind the pressure-receiving member, the rear end of the bottom portion of the pressure-receiving member is located below the rear connecting member, the pressure-receiving member is characterized by not being in contact with the rear connecting member. A vehicle seat

2. The vehicle seat according to claim 1, wherein the front end of the pressure-receiving member is located behind the rear end of the front connecting member.

3. The vehicle seat according to claim 1, wherein the bottom portion has a front inclined portion that inclines upward toward the front connecting member.

4. The vehicle seat according to any one of claims 1 to 3, wherein the bottom portion has a portion that becomes wider toward the front connecting member.

5. The vehicle seat according to any one of claims 1 to 4, wherein the upper end of the pressure-receiving member is located above the rear connecting member.

6. The vehicle seat according to any one of claims 1 to 5, wherein a harness member is disposed between the pressure-receiving member and the front connecting member.

7. A vehicle seat according to any one of claims 1 to 6, further comprising a pad member placed on the seat frame, and a skin material covering the pad member.

Images