JP2017206260A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat capable of stably supporting an upper body of an occupant.SOLUTION: A vehicle seat includes a seat cushion and a seat back S2, where the seat back S2 includes a plate-like pressure receiving member 40 for supporting a load from an occupant, in the seat back S2. The pressure receiving member 40 includes: a pressure receiving part 41 facing an upper body rear part of the occupant; and support parts 42 which extend from both left and right end parts of the pressure receiving part 41 to the outer side in a crosswise direction and are formed so as to elastically deform in a fore-and-aft direction. The seat back S2 includes deformation amount restriction means (support wire 24) which restricts deformation amounts of the support parts 42.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle seat including a seat cushion and a seat back.

  2. Description of the Related Art Conventionally, there is known a vehicle seat provided with a plate-like pressure receiving member that is disposed in a seat back and supports a pad material of the seat back from behind (see Patent Document 1).

JP 2010-179754 A

  By the way, in the vehicle seat, it is required that the upper body of the occupant can be stably supported.

Then, an object of this invention is to provide the vehicle seat which can support the upper body of a passenger | crew stably.
Another object of the present invention is to suppress the increase in size of the side frame and to improve the versatility of the side frame.
Another object of the present invention is to suppress interference between members in the seat back.

  The present invention for achieving the above object is a vehicle seat comprising a seat cushion and a seat back, wherein the seat back includes a plate-like pressure receiving member that supports a load from an occupant in the seat back. The pressure receiving member has a pressure receiving portion that faces the upper back of the occupant, and a support portion that extends from the left and right ends of the pressure receiving portion to the outside in the left-right direction and is elastically deformable in the front and rear directions. The seat back includes a deformation amount restricting means for restricting a deformation amount of the support portion.

  According to such a configuration, the occupant's upper body can be supported in a wide range by the central pressure receiving portion and the left and right support portions, and thus the occupant's upper body can be stably supported. Further, since the deformation amount of the support portion can be regulated by the deformation amount regulating means, excessive deformation of the support portion can be suppressed during normal seating, and this also stabilizes the occupant's upper body. Can be supported.

  In the vehicle seat described above, the deformation amount restricting means may be a contact member that abuts on a front end portion of the support portion when the support portion is deformed by a predetermined amount.

  According to this, it is possible to stably support the upper body of the occupant by suppressing excessive deformation of the support portion by the contact between the tip portion of the support portion and the contact member, and the tip portion of the support portion is the contact member. Since the deformation of the support portion is allowed until it abuts against, a necessary amount of deformation of the support portion can be ensured.

  In the vehicle seat described above, the seat back includes left and right side frames constituting left and right frames of the seat back, and wire members attached to the side frames, and the contact member includes It can be set as the structure which is a wire member.

  According to this, it is not necessary to form the contact portion on the side frame as compared with the case where the side frame is used as a contact member by forming a portion that contacts the tip of the support portion on the side frame itself. The enlargement of the side frame can be suppressed, and the versatility of the side frame can be improved.

  In the vehicle seat described above, the front end portion of the support portion may be configured such that a hook portion that is bent rearward and is hooked on the wire member when contacting the wire member is formed.

  According to this, since the position of the front-end | tip part of a support part can be firmly controlled because a latching part is hooked on a wire member, the excessive deformation | transformation of a support part can be suppressed more, and a passenger | crew's upper body can be stabilized more. Can be supported.

  Further, in the vehicle seat described above, the seat back includes left and right opposing plates that are opposed to each other in the left-right direction and are disposed on the outer sides in the left-right direction of the pressure receiving member, and the contact member is the opposing plate. It can also be configured.

  According to this, since the front end portion of the support portion comes into contact with the surface, the contact state between the front end portion of the support portion and the counter plate is maintained, and excessive deformation of the support portion can be firmly suppressed. The upper body of the occupant can be supported more stably.

  In the vehicle seat described above, the counter plate may be provided so as to be slidable in contact with the front end of the support portion, and may include a restricting portion with which the front end of the support portion slidably contacted rearward. .

  According to this, since the deformation of the support portion is allowed by the sliding contact between the front end portion of the support portion and the counter plate until the front end portion of the support portion comes into contact with the regulating portion, the necessary deformation amount of the support portion is ensured. In addition, since the excessive deformation of the support portion can be further suppressed after the front end portion of the support portion and the restricting portion come into contact with each other, the upper body of the occupant can be supported more stably.

  In the vehicle seat described above, the seat back includes left and right opposing plates facing in the left-right direction, the support portion is curved in an arc shape in a horizontal cross section, and the deformation amount restricting means includes the It can also be configured by a hole formed in the opposing plate and into which the tip of the support portion enters.

  According to this, since the front-end | tip part of a support part becomes difficult to move because the front-end | tip part of a support part has entered into the hole formed in the opposing board, the excessive deformation | transformation of a support part is suppressed more. Can support the occupant's upper body more stably.

  In the vehicle seat described above, the seat back includes a seat back frame that constitutes a frame of the seat back, and a connecting wire that spans the seat back frame and connects the pressure receiving member to the seat back frame. And a connecting portion between the pressure receiving member and the connecting wire may be arranged in a range in which the support portion is formed in the vertical direction.

  According to this, since the pressure receiving member is connected to the seat back frame via the connecting wire at the same height position as the support portion, the support portion is stabilized in posture, so that excessive deformation of the support portion is deformed. It can be firmly suppressed by the amount regulating means. Thereby, a passenger | crew's upper body can be supported more stably.

  Further, in the vehicle seat in which the front end portion of the support portion described above is movable, the seat back is spanned between the seat back frame constituting the frame of the seat back and the seat back frame, and the pressure receiving member is attached to the seat back frame. A connection wire connected to the seat back frame, and the front end of the support portion and the connection wire may be arranged so as not to overlap each other when viewed from the front.

  According to this, even if it is a case where the front-end | tip moves by the deformation | transformation of a support part, interference with the front-end | tip of a support part and a connection wire can be suppressed.

  According to the present invention, since the upper body of the occupant can be supported in a wide range by the pressure receiving portion and the left and right support portions, the occupant's upper body can be stably supported. Further, since the deformation amount of the support portion can be regulated by the deformation amount regulating means, excessive deformation of the support portion can be suppressed during normal seating, and the occupant's upper body can be stably supported.

  In addition, according to the present invention, by using the deformation amount regulating means as the contact member, it is possible to suppress the excessive deformation of the support portion and stably support the occupant's upper body, while the required deformation amount of the support portion. Can be secured.

  In addition, according to the present invention, by using the wire member attached to the side frame as the contact member, it is possible to suppress an increase in size of the side frame and improve versatility of the side frame.

  In addition, according to the present invention, by forming the latching portion that is hooked to the wire member at the tip of the support portion, excessive deformation of the support portion can be further suppressed, and the upper body of the occupant can be supported more stably. Can do.

  In addition, according to the present invention, since the abutting member is a counter plate, the abutting state between the tip of the support portion and the counter plate is maintained, so that excessive deformation of the support portion can be firmly suppressed, and the occupant The upper body can be supported more stably.

  Further, according to the present invention, the opposing plate is provided so as to be slidable in contact with the distal end portion of the supporting portion, and the regulating portion is provided on the opposing plate, thereby ensuring the necessary deformation amount of the supporting portion and Excessive deformation can be further suppressed to support the occupant's upper body more stably.

  In addition, according to the present invention, since the deformation amount restricting means is formed by a hole formed in the counter plate and into which the distal end portion of the support portion enters, the distal end portion of the support portion becomes difficult to move. Excessive deformation can be further suppressed, and the upper body of the occupant can be supported more stably.

  Further, according to the present invention, since the connecting portion between the pressure receiving member and the connecting wire is arranged at the same height as the supporting portion, the posture of the supporting portion is stabilized. It can be firmly suppressed by the means, and the upper body of the occupant can be supported more stably.

  In addition, according to the present invention, by arranging the tip of the support portion and the connection wire so as not to overlap each other when viewed from the front, interference between the tip of the support portion and the connection wire can be suppressed.

1 is a perspective view of a vehicle seat as an example of a vehicle seat according to a first embodiment. It is a perspective view of a seat frame built in a vehicle seat. It is a front view of the seat back frame which comprises a seat frame. It is XX sectional drawing of FIG. It is an expanded sectional view of the seat back concerning a 2nd embodiment. It is an expanded sectional view of the seat back concerning the modification of a 2nd embodiment. It is an expanded sectional view of the seat back concerning a 3rd embodiment. It is a perspective view of the seat back frame concerning a 4th embodiment. It is a front view of the seat back frame concerning a 4th embodiment. It is an expanded sectional view of the seat back concerning a 4th embodiment.

[First Embodiment]
Next, a first embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
As shown in FIG. 1, the vehicle seat according to the present embodiment is configured as a vehicle seat S used for a driver seat or a passenger seat of an automobile, and a seat cushion S1 on which an occupant sits, a seat back S2, and The headrest S3 that supports the head of the passenger is mainly provided. As will be described in detail later, the vehicle seat S can be used to prevent the other vehicle from colliding with the rear part of the own vehicle or the rear part of the own vehicle colliding with the other vehicle or structure. The upper body of the occupant is sunk into the seat back S2 when a backward movement load of a predetermined value or more is applied to the seat back S2 from the body.

  A seat frame F as shown in FIG. 2 is built in the seat cushion S1 and the seat back S2. The seat frame F is mainly composed of a seat cushion frame F1 constituting a frame of the seat cushion S1 and a seat back frame F2 constituting a frame of the seat back S2. The seat cushion S1 is configured by covering a seat cushion frame F1 with a seat cushion pad made of a cushion material such as urethane foam and a skin material made of synthetic leather or fabric, and the seat back S2 is placed on the seat back frame F2. The seat back pad 50 made of a cushion material and the skin material 60 are covered (see FIG. 1).

  The seat back frame F2 mainly includes an upper frame 10, left and right side frames 20 constituting the left and right frames of the seat back S2, and a lower frame 30. The upper frame 10 and the left and right side frames 20 The lower frame 30 is formed in a frame shape integrally joined by welding or the like.

  The upper frame 10 is made of a pipe material bent into a substantially U shape, and a support bracket 12 for attaching the headrest S3 is fixed to the horizontal pipe portion 11 extending in the left-right direction by welding. The left and right vertical pipe portions 13 extending in the vertical direction of the upper frame 10 are integrally formed with the left and right side frame body portions 21 coupled to the lower portion thereof by welding or the like to form the left and right side frames 20. Yes.

  The left and right side frame main body portions 21 are formed in a substantially U shape in sectional view by pressing a metal plate or the like, and are arranged to face in the left-right direction. The side frame main body portion 21 is coupled to the vertical pipe portion 13 with the vertical pipe portion 13 held at the upper portion thereof, and has a shape in which the lower portion has an overhang portion 22 that projects forward from the upper portion. Is formed.

  The left and right side frames 20 each have a support wire 24 formed by bending a metal rod into a substantially U shape as a wire member. The support wire 24 is an example of a contact member as a deformation amount restricting unit in the present embodiment, and welding is performed so as to connect the upper end portion of the side frame main body portion 21 constituting the side frame 20 and the overhang portion 22. Is attached to the side frame 20.

As shown in FIG. 3, a pressure receiving member 40 that supports a load from an occupant is disposed in the seat back S <b> 2 via a seat back pad 50 and the like.
The pressure receiving member 40 is a plate-like member made of resin or the like, and the left and right side frames 20 are connected to the left and right side frames 20 via the upper connection wires W1 and the lower connection wires W2 spanned between the left and right side frames 20 of the seat back frame F2. Are connected so as to be able to move backward.

  The upper connecting wire W1 as the connecting wire of the present invention is formed on the upper rear surface of the pressure receiving member 40, with both end portions thereof being locked to the support tongues 13A fixed to the inner portion of the vertical pipe portion 13, respectively. The upper portion of the pressure receiving member 40 is connected to the left and right side frames 20 by the engagement claws 45 being engaged. Further, both ends of the lower connecting wire W <b> 2 are respectively locked to link members 23 that are fixed to the inner surface of the side portion of the side frame main body 21 and are swingable rearward, and are formed on the lower rear surface of the pressure receiving member 40. The pressure receiving member 40 is connected to the left and right side frames 20 by the engagement claws 46 being engaged. The link member 23 is configured to swing backward by a known mechanism using a tension coil spring when a backward movement load of a predetermined value or more is applied.

  The pressure receiving member 40 mainly includes a pressure receiving portion 41 that faces the upper back of the occupant and left and right support portions 42 that extend outward from the left and right ends of the pressure receiving portion 41 in the left-right direction.

  As shown in FIGS. 3 and 4, the support portion 42 is located behind the side portion of the part corresponding to the chest height of the upper body of the occupant mainly through the side portion 52 described later of the seat back pad 50. Support the part. The support portion 42 is formed integrally with the pressure receiving portion 41, and more specifically from the upper part of the left and right ends of the pressure receiving portion 41, more specifically from the portion corresponding to the height of the chest of the occupant of the pressure receiving portion 41. It extends obliquely forward, and extends to the front side of the support wire 24 (side frame 20) with a predetermined gap in the front-rear direction between the side frame 20 and the support wire 24. Since the support portion 42 extends to the front side of the side frame 20 as described above, as shown in FIG. 3, a support tongue piece fixed to the tip 42 </ b> A of the support portion 42 and the inner portion of the vertical pipe portion 13. The upper connecting wires W1 whose ends are locked to 13A are arranged so as not to overlap each other when viewed from the front.

  As shown in FIG. 4, the seat back pad 50 that covers the seat back frame F <b> 2 includes a central portion 51 that faces the pressure receiving portion 41, and left and right sides that are provided on both the left and right sides of the central portion 51 and project forward from the central portion 51. The support part 42 is disposed so as to face the side part 52 of the seat back pad 50. And in this embodiment, the support part 42 is elastically back and forth using the vicinity of the connection part with the pressure receiving part 41 as a fulcrum so that the occupant can follow the elastic deformation of the side part 52 when leaning against the seat back S2. It is formed to be able to bend and deform. In addition, a hook-shaped hooking portion 42 </ b> H that is bent obliquely rearward outside in the left-right direction is formed at the distal end portion of the support portion 42.

  The pressure receiving portion 41 mainly supports the upper back portion of the occupant via the central portion 51 of the seat back pad 50. As shown in FIG. 3, the pressure receiving portion 41 is integrally formed with engaging claws 45 and 46 for fastening the pressure receiving member 40 to the upper and lower connecting wires W1 and W2. Each of the engaging claws 45 and 46 has a substantially L shape in sectional view, which extends rearward from the rear surface of the pressure receiving portion 41 and then bends downward. In the present embodiment, the two engaging claws 45 that are the connecting portions between the pressure receiving member 40 and the upper connecting wire W1 are respectively disposed within the range in which the support portions 42 are formed in the vertical direction.

Next, the effect of the vehicle seat S configured as described above will be described.
When the occupant leans against the seat back S2 during normal seating, a load is applied to the pressure receiving member 40 via the seat back pad 50. In the vehicle seat S, since the pressure receiving member 40 includes the pressure receiving portion 41 and the left and right support portions 42, the upper body of the passenger is supported by the central pressure receiving portion 41 and the left and right support portions 42 in a wide range. Thus, the upper body of the occupant can be stably supported.

  Further, when the occupant leans against the seat back S2, the side portion 52 of the seat back pad 50 is deformed, so that the support portion 42 is elastically bent backward following this. When the deformation amount of the side portion 52 is increased, the support portion 42 is further bent backward, but when the support portion 42 is deformed by a predetermined amount as shown by a chain line in FIG. Since the portion comes into contact with the support wire 24, the support portion 42 cannot bend any more. As described above, in the vehicle seat S, the amount of deformation of the support portion 42 can be regulated by the support wire 24. Therefore, excessive deformation of the support portion 42 can be suppressed, which also stabilizes the occupant's upper body. Can be supported.

  In the present embodiment, when the distal end portion of the support portion 42 comes into contact with the support wire 24, the hook portion 42H is engaged with and hooked with the support wire 24, and thus such a hook portion 42H is formed. Compared with a configuration that does not, the position of the front end portion of the support portion 42 can be firmly regulated. Thereby, since the excessive deformation | transformation of the support part 42 can be suppressed more, a passenger | crew's upper body can be supported more stably.

  In the present embodiment, the amount of deformation of the support portion 42 is regulated by the contact between the tip end portion of the support portion 42 and the support wire 24. In other words, the tip end portion of the support portion 42 contacts the support wire 24. The contact portion 42 is allowed to be deformed until it comes into contact. Thereby, the required deformation amount of the support part 42 is securable.

  Further, in the present embodiment, since the engaging claw 45 that is a connecting portion between the pressure receiving member 40 and the upper connecting wire W1 is disposed within the range in which the support portion 42 is formed in the vertical direction, the pressure receiving member 40 is supported. It can be connected to the seat back frame F2 through the upper connecting wire W1 at the same height as the portion 42. As a result, the posture of the pressure receiving member 40 (support portion 42) is stabilized, so that excessive deformation of the support portion 42 can be firmly suppressed by the support wire 24, and the upper body of the passenger is supported more stably. can do.

  Furthermore, in this embodiment, since the support wire 24 attached to the side frame 20 is used as the contact member of the present invention, for example, a portion that contacts the tip of the support portion 42 is formed on the side frame itself. Compared to the case where the side frame is used as the contact member, it is not necessary to form the contact portion on the side frame. Thereby, the enlargement of the side frame 20 can be suppressed. In addition, since it is not necessary to form a contact portion on the side frame, in other words, it is not necessary to configure the side frame 20 as a dedicated frame for the vehicle seat S of the present embodiment. It can be used for seats other than S, and the versatility of the side frame 20 can be improved.

  Further, since the tip 42A of the support portion 42 and the upper connecting wire W1 are arranged so as not to overlap each other when viewed from the front, even if the tip 42A moves back and forth due to deformation of the support portion 42, the tip Interference between 42A and the upper connecting wire W1 can be suppressed.

  On the other hand, when a backward movement load of a predetermined value or more acts on the seat back S2 from the occupant's upper body by another vehicle colliding with the rear part of the host vehicle, the vehicle is pushed by the occupant's upper body and near the center of the seat back pad 50 Is greatly deformed, and a large backward movement load acts on the pressure receiving member 40 via the seat back pad 50 or the like.

  Then, the pressure receiving member 40 moves backward with respect to the left and right side frames 20 by bending the upper and lower connecting wires W1 and W2 or moving the lower connecting wire W2 rearward by the swing of the link member 23. . At this time, the tip of the support portion 42 may contact the support wire 24 and the latching portion 42H may be caught by the support wire 24. In this case, the latching portion 42H is deformed and supported by a large backward movement load. By separating from the wire 24, the pressure receiving member 40 can move backward.

  When the pressure receiving member 40 moves backward, the upper body of the occupant sinks deeply into the seat back S2. Thereby, since a passenger | crew's head approaches the headrest S3 rapidly and is supported by headrest S3, a passenger | crew's head and neck can be protected from the impact by the rear surface collision of a vehicle.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the embodiment described below, the same components as those in the embodiment described above are denoted by the same reference numerals, and detailed description thereof will be omitted. Further, since the seat back S2 is formed substantially symmetrically, only the configuration around the right side frame 20 is shown enlarged in the cross-sectional view shown below.

  As shown in FIG. 5, the pressure receiving member 40 mainly includes a pressure receiving portion 41 and left and right support portions 42, and in the present embodiment, the support portion 42 is located near the connection portion with the pressure receiving portion 41. As a fulcrum, it is formed to be elastically deformable in the front-rear direction, and its tip end portion 42B is bent substantially forward.

  Further, in the present embodiment, the seat back S2 includes a pan frame 25 as an example of left and right facing plates facing in the left-right direction. The pan frame 25 is an example of an abutting member as a deformation amount restricting unit in the present embodiment, and is fixed by welding or the like so as to be bridged back and forth on the support wire 24 of the side frame 20. It is arranged outside in the direction. As shown by a chain line in FIG. 5, the pan frame 25 is provided so that the front end portion 42B of the support portion 42 abuts against the inner surface 25A when the support portion 42 is deformed by a predetermined amount. Further, the pan frame 25 is provided so that the inner surface 25A and the front end portion 42B of the support portion 42 can be slidably contacted with each other until the front end portion 42B of the support portion 42 completely contacts the inner surface 25A.

  According to the present embodiment as described above, since the upper body of the occupant can be supported in a wide range by the pressure receiving portion 41 and the support portion 42 as in the above-described embodiment, the upper body of the occupant can be stably supported. Can do. Moreover, since the excessive deformation | transformation of the support part 42 can be suppressed by contact | abutting with the front-end | tip part 42B of the back bent support part 42, and the inner surface 25A of the pan frame 25, this also stabilizes a passenger | crew's upper body. Can be supported.

  In the present embodiment, since the plate-like pan frame 25 is used as the contact member of the present invention, the front end portion 42B of the support portion 42 comes into contact with the surface (inner surface 25A). The contact state between the portion 42B and the pan frame 25 is maintained, and excessive deformation of the support portion 42 can be suppressed firmly. Thereby, a passenger | crew's upper body can be supported more stably.

  Further, in the present embodiment, the support portion 42 is allowed to be deformed by sliding contact between the tip portion 42B and the inner surface 25A until the tip portion 42B completely contacts the inner surface 25A. Can be secured.

  Note that the pan frame 25 may have a step-shaped restricting portion 25B with which the front end portion 42B of the support portion 42 slidably contacted is contacted as shown in FIG. 6 as a modified example. According to this, since the excessive deformation | transformation of the support part 42 can be suppressed more by contact | abutting with the front-end | tip part 42B and the control part 25B, a passenger | crew's upper body can be supported more stably.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.
As shown in FIG. 7, in the present embodiment, the seat back S2 has a pan frame 25 as left and right opposing plates facing in the left-right direction, and the pan frame 25 is similar to the second embodiment described above. It is fixed to the support wire 24 of the side frame 20 so as to be bridged back and forth. A slit-like through hole 25C that is long in the vertical direction is formed at the front end of the pan frame 25 of the present embodiment.

  The pressure receiving member 40 mainly includes a pressure receiving portion 41 and left and right support portions 42. In this embodiment, the support portion 42 has a larger curvature than the support portion 42 of the above-described embodiment in the horizontal cross section. Curved in an arc. Moreover, the front-end | tip part 42B of the support part 42 of this embodiment is penetrated by the through-hole 25C of the pan frame 25, and, thereby, the front-back position of the front-end | tip part 42B and the base end part 42D is controlled. Thus, as shown by a chain line in FIG. 7, the support portion 42 has a central portion 42 </ b> C that is elastically bent substantially back and forth.

  And the deformation | transformation amount of the support part 42 is controlled because the position before and behind the front-end | tip part 42B is controlled. That is, in the present embodiment, the deformation amount regulating means of the present invention is configured by the front end portion 42B of the support portion 42 entering the through hole 25C formed in the pan frame 25.

  According to the present embodiment as described above, since the upper body of the occupant can be supported in a wide range by the pressure receiving portion 41 and the support portion 42 as in the above-described embodiment, the upper body of the occupant can be stably supported. Can do. Moreover, since the front-end | tip part 42B enters into the through-hole 25C of the pan frame 25, since an excessive deformation | transformation of a support part can be suppressed, a passenger | crew's upper body can be supported stably.

  Moreover, in this embodiment, since the front-end | tip part 42B of the support part 42 has entered into the through-hole 25C, and the front-end | tip part 42B becomes difficult to move back and forth, the excessive deformation | transformation of the support part 42 is suppressed more. It is possible to support the upper body of the occupant more stably.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described.
As shown in FIG. 8, in the seat back of the present embodiment, the seat back frame F2, the pressure receiving member 40, the frame-shaped wire 90 to which the pressure receiving member 40 is connected, and the frame-shaped wire 90 are connected to the seat back frame F2. The left and right spring wires W3 and the left and right lower connection wires W4 are arranged.

  Further, in the present embodiment, the left and right side frames 20 each have an attachment wire 26 formed by bending a metal wire into a substantially V shape as a wire member. The attachment wire 26 is an example of an abutting member as deformation amount restricting means in the present embodiment, and both end portions thereof are fixed to the vertical pipe portion 13 by welding or the like in the vicinity of the upper end portion of the side frame main body portion 21. .

  As shown in FIG. 9, the frame-shaped wire 90 is a member obtained by caulking an upper wire 91 and a lower wire 92, which are formed in a substantially U shape by bending, with a metal sleeve 93 and connected in a frame shape. It is disposed inside the frame F2 (between the left and right side frames 20) and behind the pressure receiving member 40. The upper wire 91 mainly includes left and right vertical wire portions 91A extending in the up-down direction and a horizontal wire portion 91B extending in the left-right direction so as to connect the upper ends of the left and right vertical wire portions 91A. A wire connecting portion 91C that is bent outward in the left-right direction is formed at the left and right corners where the horizontal wire portion 91B is connected. Similarly to the upper wire 91, the lower wire 92 mainly includes left and right vertical wire portions 92A and a horizontal wire portion 92B that connects lower ends of the left and right vertical wire portions 92A. A wire connecting portion 92C that is bent outward in the left-right direction is formed at the left and right corners to which the horizontal wire portion 92B is connected.

  The pressure receiving member 40 mainly includes a pressure receiving portion 41 and left and right support portions 42. In the present embodiment, the support portion 42 is elastically moved back and forth around the connection portion with the pressure receiving portion 41 as a fulcrum. It is formed to be able to bend and deform. The pressure receiving portion 41 is integrally formed with engaging claws 47A, 47B, 47C for fastening the pressure receiving member 40 to the frame-shaped wire 90. The engaging claws 47A to 47C extend from the rear surface of the pressure receiving portion 41 to the rear, then bend and extend along the rear surface of the pressure receiving portion 41, and further have a substantially U shape in sectional view that bends forward. When the frame-shaped wire 90 is engaged, the frame-shaped wire 90 is held and the frame-shaped wire 90 is held between the pressure receiving portion 41 and the rear surface. One engaging claw 47 </ b> A is formed at the center in the left-right direction of the upper end portion of the pressure receiving portion 41, and engages with the horizontal wire portion 91 </ b> B of the upper wire 91. Further, two engaging claws 47 </ b> B are formed side by side in the left-right direction at the upper portion of the pressure receiving portion 41, and engage with the vertical wire portion 91 </ b> A of the upper wire 91. Further, two engaging claws 47 </ b> C are formed side by side in the left-right direction at the lower end portion of the pressure receiving portion 41 and engage with the horizontal wire portion 92 </ b> B of the lower wire 92.

  The spring wire W3 is a connecting member having a spring property (elasticity) formed by spirally winding a metal wire, and an end portion on the inner side in the left-right direction is engaged with the wire connecting portion 91C of the upper wire 91, The upper end of the pressure receiving member 40 is connected to the left and right side frames 20 by engaging the end portion on the outer side in the left-right direction with the attachment wire 26. Further, the lower connecting wire W4 has an end portion on the inner side in the left-right direction connected to the wire connecting portion 92C of the lower wire 92 by caulking, for example, a metal sleeve 94, and an end portion on the outer side in the left-right direction is the side frame main body portion. The lower part of the pressure receiving member 40 is connected to the left and right side frames 20 by being locked in a mounting hole 21 </ b> A (see FIG. 8) formed in the lower part of 21.

  In the present embodiment, the frame-shaped wire 90 is disposed on the inner side in the left-right direction with respect to the support portion 42, that is, on the rear side of the pressure receiving portion 41 within the range in which the support portion 42 is formed in the vertical direction when viewed from the front. Yes. Further, the engaging claw 47A, which is a connecting portion between the pressure receiving member 40 and the horizontal wire portion 91B (the portion extending in the left-right direction of the frame-shaped wire 90), and the pressure receiving member 40 and the vertical wire portion 91A (the upper and lower portions of the frame-shaped wire 90). The engaging claws 47 </ b> B, which are connecting portions to the portion extending in the direction), are all disposed within the range in which the support portion 42 is formed in the vertical direction.

  According to the present embodiment described above, since the upper body of the occupant can be supported in a wide range by the pressure receiving portion 41 and the support portion 42 as in the above-described embodiment, the upper body of the occupant can be stably supported. Can do. Further, as shown in FIG. 10, when the support portion 42 is deformed by a predetermined amount, the distal end portion of the support portion 42 contacts the attachment wire 26, so that the deformation amount of the support portion 42 can be regulated by the attachment wire 26. . Thereby, since the excessive deformation | transformation of the support part 42 can be suppressed, a passenger | crew's upper body can be supported stably.

  In the present embodiment, the frame-shaped wire 90 is disposed on the rear side of the pressure-receiving portion 41 within the range in which the support portion 42 is formed in the vertical direction, and therefore the pressure-receiving portion 41 is formed by the frame-shaped wire 90 having a frame shape. Can be stably supported, whereby the upper body of the occupant can be more stably supported.

  In the present embodiment, the engaging claw 47A that engages with the horizontal wire portion 91B and the engaging claw 47B that engages with the vertical wire portion 91A are disposed within the range in which the support portion 42 is formed in the vertical direction. Therefore, the attachment rigidity of the pressure receiving member 40 to the frame-shaped wire 90 can be improved at the same height position as the support portion 42. Thereby, since the attitude | position of the support part 42 is stabilized, a passenger | crew's upper body can be supported more stably.

  In the present embodiment, when a large backward movement load acts on the seat back S2 (pressure receiving member 40) from the upper body of the occupant, for example, when another vehicle collides with the rear of the host vehicle, the spring wire W3 extends or the lower connecting wire The pressure receiving member 40 moves backward with respect to the left and right side frames 20 by bending W4 or the like. As a result, the upper body of the occupant sinks deeply into the seat back S2, and the occupant's head quickly approaches the headrest S3 and is supported by the headrest S3. Can be protected.

  In the present embodiment, since the spring wire W3 has a spring property (elasticity), when a large backward movement load is applied to the pressure receiving member 40, the spring wire W3 expands and deforms larger than the lower connecting wire W4. As a result, the pressure receiving member 40 retreats larger in the upper part than in the lower part. As a result, the chest area, which is the upper part of the occupant's upper body, can be sunk deeper and more quickly with respect to the seat back S2 than the waist area, which is the lower part of the occupant's upper body. As a result, the occupant's head close to the occupant's chest is quickly approached by the headrest S3 and supported by the headrest S3, so that the occupant's head and neck can be more effectively protected.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention as follows.

  In the embodiment, the support portion 42 is formed only at a position corresponding to the height of the occupant's chest, but the present invention is not limited to this. For example, the support portion corresponds to the height of the occupant's waist. It may be formed only at the position where the occupant is positioned, or may be formed at both the position corresponding to the height of the chest of the occupant and the position corresponding to the height of the waist. When the support part is formed at both the position corresponding to the height of the chest of the occupant and the position corresponding to the height of the waist, the support part corresponding to the height of the occupant's chest and the height of the waist The supporting part to be formed may be formed independently or may be formed in a state of being connected to each other.

  In the embodiment, the connecting portion (engagement claw 45) between the pressure receiving member 40 and the upper connecting wire W1 is disposed within the range in which the support portion 42 is formed in the vertical direction, but the present invention is limited to this. It is not something. For example, referring to FIG. 3, the engaging claw 45 may be disposed outside the range in which the support portion 42 is formed in the vertical direction. The same applies to the engaging claws 47A and 47B of the fourth embodiment. The connection between the pressure receiving member and the wire is not limited to the connection by the engaging claw. For example, the wire is connected by a binding band between a pair of through-holes formed in the pressure receiving member in the vertical and horizontal directions. It may be a configuration or the like.

  In the said 2nd Embodiment, although the pan frame 25 was illustrated as an opposing board, this invention is not limited to this, For example, the side frame main-body part 21 grade | etc., May be sufficient as an opposing board. In the above embodiment, the support wire 24, the pan frame 25, and the like are exemplified as the contact member. However, the present invention is not limited to this, and for example, the contact member is the left and right of the seat back like the side frame 20. It may be a member constituting the frame.

  In the fourth embodiment, the frame-shaped wire 90 is composed of two wires (the upper wire 91 and the lower wire 92). However, the present invention is not limited to this. For example, the frame-shaped wire includes one frame-shaped wire. You may be comprised from this wire.

  In the said embodiment, although the vehicle seat S used by a motor vehicle was illustrated as a vehicle seat, this invention is not limited to this, For example, it uses with a rail vehicle, a ship, an aircraft, etc. It may be a sheet.

20 side frame 24 support wire 40 pressure receiving member 41 pressure receiving portion 42 support portion 42A tip 42H hooking portion 45 engaging claw F2 seat back frame S vehicle seat S1 seat cushion S2 seat back W1 upper connecting wire

The present invention for achieving the above-described object includes a left and right side frame that is spaced apart from the left and right, and a plate-shaped pressure receiving member that is disposed between the left and right side frames and supports a load from an occupant. The pressure-receiving member has a pressure-receiving portion, and a support portion that extends from the left and right end portions of the pressure-receiving portion in the left-right direction and obliquely with respect to the pressure-receiving portion, The vehicle seat further includes a deformation amount restricting means for restricting a deformation amount of the support portion, and the deformation amount restricting means abuts on a distal end portion of the support portion to restrict the movement of the support portion. Features.
The vehicle seat includes a seat cushion and a seat back, and the seat back includes a plate-shaped pressure receiving member that supports a load from an occupant in the seat back, and the pressure receiving member includes: A pressure receiving portion that faces the upper back of the occupant, and a support portion that extends outward from the left and right ends of the pressure receiving portion in the left-right direction and is elastically deformable in the front-rear direction. it may have a deformation amount regulating means for regulating the amount of deformation of the support portion.

According to this, even if it is a case where the front-end | tip moves by the deformation | transformation of a support part, interference with the front-end | tip of a support part and a connection wire can be suppressed.
The vehicle seat may further include a connecting wire that extends in the left-right direction and supports the pressure receiving portion.
Moreover, the above-mentioned vehicle seat WHEREIN: The edge part of the said connection wire can be set as the structure arrange | positioned inside the left-right direction rather than the front-end | tip part of the left-right direction of the said support part.
In the above vehicle seat, the connecting wire may be configured to support both left and right end portions of the pressure receiving portion.
Further, in the above vehicle seat, the connecting wire may be configured to support a central portion in the left-right direction of the pressure receiving portion.

Further, by the abutting member the deformation amount regulating means, while stably supported the occupant of the upper body to suppress excessive deformation of the support portion, to ensure a deformation amount required of the support portion it can.

In addition, by a wire member attached an abutment member to the side frame, it is possible to suppress an increase in the size of the side frames, it is possible to improve the versatility of the side frame.

Further, by forming the hook portion hooked to the wire member to the distal end portion supporting region portion, an excessive deformation of the support portion can be further suppressed, it is possible to more stably support the occupant's upper body.

Further, the contact member by a counter plate, since the contact between the tip and the opposite plate of the support portion is maintained firmly can suppress excessive deformation of the supporting portion, more stable the upper body of the passenger Can be supported.

Further, provided the pair countercurrent plate possible tip and sliding of the support portion, and, by providing the restricting portion facing plate, while ensuring a deformation amount required for support, more excessive deformation of the support portion It can suppress and can support a passenger | crew's upper body more stably.

Further, the deformation amount regulating means, formed on the counter plate, by constituting the tip has entered the hole of the support portion, the tip portion of the support portion is less likely to move, more excessive deformation of the support portion It can suppress and can support a passenger | crew's upper body more stably.

Further, by disposing the connecting portion of the connecting wires and the receiving member at the same height as the support portion, because the posture of the support portion is stabilized, the excessive deformation of the supporting portion firmly be prevented by the deformation amount controlling means The upper body of the occupant can be supported more stably.

Further, by arranging so as not to overlap each other when viewed a front end the connecting wire supporting region portion from the front, it is possible to suppress interference between the tip and the connecting wire supporting portion.

Claims (1)

A vehicle seat comprising a seat cushion and a seat back, wherein the seat back has a plate-like pressure receiving member that supports a load from an occupant in the seat back,
The pressure receiving member includes a pressure receiving portion that faces an upper back portion of an occupant, and a support portion that extends from the left and right ends of the pressure receiving portion to the outside in the left-right direction and is elastically deformable in the front-rear direction.
The seat back includes left and right side frames constituting left and right frames of the seat back, and wire members attached to the side frames,
A hook portion bent backward is formed at the tip of the support portion,
The vehicle seat according to claim 1, wherein the hooking portion is hooked on the wire member when the supporting portion is deformed by a predetermined amount, and the wire member regulates a deformation amount of the supporting portion.

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