JP6455315B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat.

  Conventionally, widely used vehicle seats are formed by fixing a cushion pad to a skeleton formed by connecting rod-shaped steel members. On the other hand, the back and side surfaces of the seated person are supported by a series of members (shells) formed using a highly rigid material such as fiber reinforced plastic (FRP) without using a skeleton that joins rod-shaped steel members. 2. Description of the Related Art A vehicle seat configured to be capable of this is known (see Patent Document 1). Since such a vehicle seat does not require a skeleton formed of a steel member, it can be formed relatively lightweight while maintaining necessary rigidity. The vehicle seat of the form described in Patent Document 1 is also called a bucket seat or the like, and it is possible to suppress the seat occupant from shifting in the lateral direction by fitting the seat occupant into a recess formed by a shell formed of FRP or the like. It is said. Such a vehicle seat is usually used by attaching a cushion pad formed of urethane to a shell.

Japanese Patent Laid-Open No. 9-121973

  As described in Patent Document 1, when the cushion pad is arranged directly on the shell, the cushion pad mainly plays a role of forming a shape required to support the seated person. In recent years, movements for pursuing the support form of the seated person have been active, but as the movement becomes active, the thickness of the cushion pad tends to increase. On the other hand, when the thickness of the cushion pad is increased, various troubles may occur, such as an increase in the number of mounting work steps or the cushion pad being easily sag.

  The present invention has been made in view of the above points, and the problem to be solved by the present invention is to increase the thickness of a cushion pad that supports a seated person in a vehicle seat that supports the cushion pad with a shell. It is to be able to suppress this.

In order to solve the above problems, the present means takes the following means. First, a first means is a vehicle seat having a seat cushion portion and a seat back portion, and the seat back portion includes a shell capable of supporting the seat occupant from the back, a seat occupant and the seat back portion. The vehicle seat includes a contactable cushion pad, and includes an intermediate support member made of hard foamed polystyrene that is harder than the cushion pad between the shell and the cushion pad.

  According to the first means, since the intermediate support member is disposed between the shell and the cushion pad, it may be possible to suppress an increase in the thickness of the cushion pad. Further, it may be possible to quickly change the size of the vehicle seat in accordance with the seated person's physique without changing the shape of the shell.

In the first means, a concave portion is formed on the cushion pad side surface of the intermediate support member so that the portion located in the center in the left-right direction is recessed behind the portion located on the left and right end sides. The shell-side surface of the intermediate support member is a vehicle seat that is formed along the surface of the shell on the intermediate support member side .

According to the first means, it may be possible to provide a vehicle seat that allows a seated person to easily feel a fit.

The second means relates to the first means, and is a vehicle seat provided with an air permeable groove in the intermediate support member.

According to the second means, it is possible to diffuse the hot air around the intermediate support member generated on the back side of the seated person.

The third means relates to the first or second means, and includes a gas-permeable groove on a surface of the intermediate support member facing the shell, and the intermediate support member includes the groove and a surface facing the cushion pad. Is a vehicle seat in which a ventilation hole is formed.

According to the third means, it may be possible to diffuse hot air between the intermediate support member and the cushion pad between the intermediate support member and the shell.

The fourth means relates to the first to third means, the seat back portion is formed with a side support capable of restraining the seat occupant from shifting in the left-right direction, and the intermediate support member faces upward. It is a vehicle seat provided with a groove that can be opened.

According to the fourth means, it is possible to release the hot air to the outside of the vehicle seat even if the side support is formed so that the hot air is difficult to escape from the side.

  ADVANTAGE OF THE INVENTION According to this invention, in the vehicle seat which supports a cushion pad with a shell, it can become possible to suppress that the thickness of the cushion pad which supports a seated person increases.

It is a perspective view of the vehicle seat in an Example. It is the perspective view which showed the state which cut | disconnected the cushion pad of the vehicle seat in an Example in the left-right direction center of the vehicle seat, and removed the left half. It is a disassembled perspective view of the vehicle seat. In addition, the external shape of the vehicle seat is represented by a two-dot chain line, and the shell, the intermediate support member, and the cushion pad are represented by a solid line. It is a longitudinal cross-sectional view of the shell in which the intermediate support member was mounted. However, the cushion pad is represented by a two-dot chain line. FIG. 5 is a VV cross section of FIG. 4. FIG. 6 is a VI-VI cross section of FIG. 4. It is a VII-VII cross section of FIG. It is a VIII-VIII cross section of FIG. It is a perspective view showing notionally the relation between a seated person and an intermediate support member.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings as appropriate. In the present specification, directions such as the front-rear direction, the up-down direction, and the left-right direction are defined such that X shown in FIG. For example, the seat cushion part 11 is located in the lower part of the vehicle seat 1, and the headrest part 13 is located in the upper part.

  The vehicle seat 1 in the present embodiment is used particularly for a driver of a vehicle used in a rally or other race to be seated, and is fixed to the floor of the vehicle. The vehicle seat 1 includes a seat cushion portion 11 having a support surface that faces the thigh of the seated person P, and a seat back portion 12 having a support surface that faces the back of the seated person P. ing. The vehicle seat 1 includes a shell 2 formed in a container shape using FRP (fiber reinforced plastic) or the like and a cushion pad 4 formed so as to have cushioning properties using foamed urethane or the like. is there. In particular, in the present embodiment, the seat back portion 12 is provided with an intermediate support member 3 that is harder than the cushion pad 4 between the shell 2 and the cushion pad 4. The intermediate support member 3 is disposed at a position where the seated person P can be supported from the back surface, and the thickness of the cushion pad 4 disposed thereon can be suppressed.

  The vehicle seat 1 of the present embodiment is of a so-called full bucket type, and is integrally configured so that the seat cushion portion 11 and the seat back portion 12 cannot move relative to each other. A side support 15 extending so as to be orthogonal to the seat cushion portion 11 and the like is formed on the side portions of the seat cushion portion 11 and the seat back portion 12, and the seat occupant P can be prevented from shifting in the left-right direction. ing. Further, a shoulder support 16 that can support around the shoulder of the seated person P is formed above the side support 15. The shoulder support 16 is formed so as to open slightly outward from both sides of the side support 15, and is configured so that a substantially triangular surface can face the shoulder of the seated person P.

  A headrest portion 13 is formed above the shoulder support 16 so as to face the periphery of the head of the seated person P. The headrest portion 13 is configured such that the head support 17 can be positioned on the side of the head of the seated person P. In addition, the headrest portion 13 is formed with a relief portion 18 that is recessed rearward so that there is no hindrance even if a seated person P wearing a helmet gets in.

  Two openings 19 through which a belt (not shown) capable of fixing the seated person P can be passed are formed in the vicinity of the shoulder support 16. A cushion pad 4 positioned on the back side of the seated person P is disposed on the seat back portion 12 so as to spread from the vicinity of the seat cushion portion 11 to the vicinity of the opening 19 (see FIG. 2). The cushion pad 4 located below the thigh of the seated person P is disposed on the seat cushion portion 11 so as to spread from the vicinity of the seat back portion 12 to the front end portion. These cushion pads 4 are configured by covering the surface of elastic foamed urethane with a skin.

  As shown in FIGS. 2 and 3, the seat back portion 12 in the present embodiment is provided with two detachable cushion pads 4. Similarly, the seat cushion portion 11 is also provided with two removable cushion pads 4. An intermediate support member 3 capable of receiving the cushion pad 4 is disposed on the rear surface side of the cushion pad 4 disposed in the seat back portion 12. The intermediate support member 3 is formed using a hard foam polystyrene in order to form it more rigidly than the cushion pad 4. The intermediate support member 3 can support the cushion pad 4. In the present embodiment, the intermediate support member 3 is configured to be able to support two cushion pads 4 by one intermediate support member 3. In addition, in order to suppress the gap between the intermediate support member 3 and the cushion pad 4, the intermediate support member 3 and the cushion pad 4 are joined by a surface fastener (not shown).

  As shown in FIG. 4, the intermediate support member 3 is formed so that the rear surface sufficiently contacts the shell 2. The intermediate support member 3 placed on the shell 2 is softer than the shell 2 and uses hard foamed polystyrene having elasticity. By forming the rear surface of the intermediate support member 3 having such characteristics along the curved surface on the front side of the shell 2, the intermediate support member 3 is attached so as to suppress movement with respect to the shell 2. Therefore, in the present embodiment, a member for fixing the intermediate support member 3 and the shell 2 is not used, and the intermediate support member 3 and the shell 2 are easily separated.

  The intermediate support member 3 is formed so that the front surface is concave. More specifically, on the surface of the intermediate support member 3 on the cushion pad 4 side, a portion of the intermediate support member 3 that is located in the center in the left-right direction is located behind the portion that is located on the left and right ends of the intermediate support member 3. A recessed portion 31 that is recessed is formed. The concave portion 31 constitutes a basic form for allowing the seated person P's waist and the like to fit into the seat back portion 12. By the way, as can be understood from FIGS. 4 to 7, the structure of the shell 2 is formed such that a portion corresponding to the side support 15 and a support surface that supports the back surface of the seated person P are substantially orthogonal. Such a shape has an efficient structure to resist the load applied to the shell 2 from the seated person P, but does not bring a fit to the seated person P. On the other hand, as shown in FIGS. 5 to 7, the intermediate support member 3 placed on the shell 2 is configured to conform to the shape of the back surface of the seated person P, and thus brings the fit to the seated person P. Is possible.

  The front surface of the intermediate support member 3 has a shape that is dented toward the rear side so that the seated person P can easily support a stooped posture with a rolled back, and has a slightly bent shape in a side view ( 3 and 4). The bent portion is configured to be a portion adjacent to the lower portion of the shoulder support 16. In order to obtain such a structure, the thickness of the intermediate support member 3 is adjusted. Specifically, as understood by comparing the thickness around the central part in the left-right direction shown in FIGS. 4 to 8, the part supporting the circumference of the buttocks of the seated person P is formed to have the greatest thickness. (See FIG. 5). The part supporting the periphery of the waist above the part is slightly thinner (see FIG. 6), and the part supporting the lower part of the rib is thinnest (see FIG. 7). Further, the portion supporting the upper portion of the upper rib is thicker than the portion supporting the lower portion of the rib (see FIG. 8). Due to such a configuration, even when the seated person P has a rounded back, it may be possible to appropriately support the hips, the waist, and the ribs.

  By the way, if the shell 2 is used, the back side of the seated person P is often not air permeable. For this reason, when sitting for a long time, the back surface of the seated person P may be in a wet state. In particular, since the bucket seat is formed so as to restrain the movement of the human body, conventionally, hot air generated on the back side of the seated person P has been easily accumulated. Therefore, the intermediate support member 3 in the present embodiment forms a groove 32 through which hot air generated on the back side of the seated person P can be vented. Thereby, it may be possible to diffuse the hot air on the back side of the seated person P.

  As shown in FIG. 9, the groove 32 in this embodiment is formed on the rear surface of the intermediate support member 3. In order to allow hot air on the back surface of the seated person P to reach the groove 32, a vent hole 33 is formed so as to penetrate from the front side to the rear side of the intermediate support member 3. The size of the vent hole 33 is sufficient if it sufficiently satisfies the vent function, but in the present embodiment, it is provided with a diameter of about 15 mm, and the width of the groove 32 is slightly shorter than that. It is comprised so that it may become.

  The groove 32 formed in the intermediate support member 3 is formed so as to continue from the lower part to the upper part. By doing so, it may be possible to guide the hot air generated around the buttocks and waist of the seated person P to the upper part. The intermediate support member 3 includes a plurality of vertically extending grooves 32 formed at substantially equal intervals in the left-right direction, and obliquely extending grooves 32 formed so as to connect the vertically extending grooves 32 to each other. . Since the thickness around the bent portion of the intermediate support member 3 tends to be thin, the number of grooves 32 extending in the vertical direction is reduced, and the rigidity of the intermediate support member 3 is maintained. Further, the groove 32 extending in the oblique direction is configured such that hot air can always move from below to above. Therefore, the hot air that has once moved upward is not forced to move downward, and the hot air can be moved smoothly.

  Since the groove 32 formed in the intermediate support member 3 is configured to be opened upward, the hot air naturally escapes to the outside. In this embodiment, the upper end of the cushion pad 4 that supports the periphery of the ribs of the seated person P is located above the intermediate support member 3, but a gap 51 is formed between the cushion pad 4 and the shell 2. ing. For this reason, the hot air easily diffuses outside the vehicle seat 1 through the gap 51.

  The vehicle seat 1 according to the present embodiment includes a seat cushion portion 11 and a seat back portion 12. The seat back portion 12 includes a shell 2 that can support the seated person P from the back surface and a cushion pad 4 that can contact the seated person P. In particular, in the present embodiment, an intermediate support member 3 that is harder than the cushion pad 4 is provided between the shell 2 and the cushion pad 4. For this reason, it may be possible to suppress an increase in the thickness of the cushion pad 4.

  In the vehicle seat 1 of this embodiment, a concave portion 31 is formed on the surface of the intermediate support member 3 on the cushion pad 4 side. More specifically, the recessed portion 31 is formed such that a portion located in the center in the left-right direction is recessed behind the portion located on the left and right end sides. For this reason, it can be possible to provide the vehicle seat 1 in which the seated person P can easily feel the fit.

  The vehicle seat 1 of the present embodiment includes a groove 32 that can be ventilated in the intermediate support member 3. For this reason, it may be possible to diffuse the hot air around the intermediate support member 3 generated on the back side of the seated person P.

  The vehicle seat 1 of this embodiment includes a groove 32 that can be ventilated on the surface of the intermediate support member 3 that faces the shell 2. In addition, the intermediate support member 3 is formed with a vent hole 33 that communicates the groove 32 and the surface facing the cushion pad 4. For this reason, it may be possible to diffuse the hot air between the intermediate support member 3 and the cushion pad 4 by ventilating the intermediate support member 3 and the shell 2. In particular, since the passage is formed by the intermediate support member 3 and the shell 2 having relatively high rigidity, a space through which hot air passes can be easily maintained.

  A side support 15 that can prevent the seated person P from shifting in the left-right direction is formed on the seat back portion 12 of the vehicle seat 1 of the present embodiment. Further, the intermediate support member 3 is provided with a gas permeable groove 32 that opens upward. For this reason, even if the side support 15 has a configuration in which hot air is difficult to escape from the side, it may be possible to release the hot air to the outside of the vehicle seat 1.

  In the vehicle seat 1 of the present embodiment, the basic shape for supporting the seated person P can be changed by simply replacing the intermediate support member 3 without changing the shell 2. For this reason, it becomes easy to change the basic shape of the vehicle seat 1 according to the seated person P, and it can be easy to pursue the riding comfort of the seated person P. Moreover, since it is possible to reduce the thickness of the cushion pad 4 arrange | positioned along a basic shape, the man-hour for forming the vehicle seat 1 according to the seated person P also in this point can be reduced. Could be possible.

  In the vehicle seat 1 of the present embodiment, the rigidity of the seat back portion 12 depends on the shell 2, and the basic shape can be formed by combining the shell 2 with the intermediate support member 3. Become. For this reason, it becomes possible to consider separately the rigidity of the seat back part 12 and the support shape of the seated person P, and the function of the vehicle seat 1 can be easily pursued.

  If the vehicle seat 1 is a full bucket seat as in the present embodiment, the seated person P has a high degree of adhesion to the vehicle seat 1, so the gap between the seated person P and the vehicle seat 1 is reduced. For this reason, it may be possible to move the hot air generated between the seated person P and the vehicle seat 1 so as to be pushed out by the vibration of the vehicle and the movement of the seated person P.

  As in the present embodiment, when the groove 32 that allows ventilation is formed in the intermediate support member 3, it is not necessary to give the shell 2 air permeability. Therefore, it may be possible to diffuse hot air without reducing the rigidity of the shell 2.

  Since the intermediate support member 3 of the present embodiment uses a member having a density lower than that of the shell 2, it is possible to reduce the thickness of the cushion pad 4 while suppressing an increase in the weight of the entire vehicle seat 1. Become. In addition, since the intermediate support member 3 formed of the foaming resin is relatively easy to process, it is easy to form a complicated shape, and it is possible to approach a desired support form.

  Although the embodiment has been described using one example, the present invention can be implemented in various other forms besides the above embodiment. For example, the present invention can be applied to a semi-bucket seat or the like in which the seat back can tilt instead of the full bucket seat as in the embodiment.

  The intermediate support member need not be formed of rigid foamed polystyrene. For lightness and ease of making the desired shape, a resin is preferable, but a metal or the like may be used. It can be formed with various materials and manufacturing methods. The intermediate support member is desirably flame retardant.

  The air permeable groove is not formed only on the rear surface of the intermediate support member, but can be formed only on the front surface or both the front surface and the rear surface.

  The groove provided in the intermediate support member can be formed so as to open in the lateral direction. In the case where a side support or the like located on the side of the intermediate support member does not hinder ventilation, it is possible to ensure air permeability simply by adopting such a configuration. When there is a concern that the ventilation to the side is hindered as in a full bucket seat, the ventilation may be ensured by forming a ventable groove in the cushion pad on the side support side.

  The vehicle is not limited to a vehicle, and may be a vehicle that flies in the air such as an airplane or a helicopter, or a vehicle that moves on the sea surface or in the sea such as a ship or a submersible.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Shell 3 Intermediate support member 4 Cushion pad 12 Seat back part 15 Side support 16 Shoulder support 19 Opening 31 Recessed part 32 Groove 33 Ventilation hole P Seated person

Claims (4)

A vehicle seat having a seat cushion portion and a seat back portion,
The seat back includes a shell that can support the occupant from the back and a cushion pad that can contact the occupant.
Between the shell and the cushion pad, an intermediate support member made of hard polystyrene that is harder than the cushion pad is provided ,
On the cushion pad side surface of the intermediate support member, a concave portion that is recessed so that a portion located in the center in the left-right direction is located behind the portion located on the left and right end sides is formed,
The vehicle seat is formed such that a surface on the shell side of the intermediate support member is formed along a surface on the intermediate support member side of the shell . The vehicle seat according to claim 1,
A vehicle seat provided with a ventable groove in the intermediate support member . The vehicle seat according to claim 1 or 2,
The intermediate support member has a groove that allows ventilation on a surface facing the shell,
A vehicle seat in which a vent hole is formed in the intermediate support member so as to communicate the groove and a surface facing the cushion pad . The vehicle seat according to any one of claims 1 to 3,
The seat back portion is formed with a side support capable of suppressing a seat occupant from shifting in the left-right direction,
A vehicle seat provided with an air permeable groove opened upward in the intermediate support member .

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