JP2014100939A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit a load from being applied to a harness member which passes through a through hole formed at a seat cushion pad.SOLUTION: A seat cushion S1 includes: a seat cushion pad 100 having a through hole 110 into which the harness member is inserted; and a long elastic member (an S spring 20) which is disposed so as to extend from the one end side to the other end side of the seat cushion pad 100 and supports the seat cushion pad 100 from below. The elastic member and the through hole 110 are arranged so as to traverse one vertical surface PF arranged along a longitudinal direction of the elastic member.

Description

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

  2. Description of the Related Art Conventionally, as a vehicle seat, a seat cushion pad in which a through hole for passing a seating sensor harness member is formed is known (see Patent Document 1). Further, a vehicle seat including an elastic member that supports a seat cushion pad from below is also known (see Patent Document 2).

JP 2012-140064 A JP 2008-080904 A

  However, when the seat cushion pad in which the through hole is formed is supported from below by the elastic member, if the vicinity of the through hole is not favorably supported by the elastic member, the vicinity of the through hole is deformed and the harness member is loaded. There is a risk of taking.

  Then, an object of this invention is to suppress that load is added to the harness member which passes the through-hole formed in the seat cushion pad.

  Another object of the present invention is to facilitate the operation of passing the harness member through the through hole and to suppress interference between the harness member and the elastic member. Another object of the present invention is to satisfactorily support the seat cushion pad with an elastic member, to reduce the weight of the seat cushion pad, and to suppress a sense of incongruity caused by a passenger feeling the presence of a through hole. .

  The present invention for solving the above-described problems is a vehicle seat including a seat cushion and a seat back, wherein the seat cushion includes a seat cushion pad having a through hole through which a harness member is inserted, and one end of the seat cushion pad. An elongated elastic member that supports the seat cushion pad from below, and the elastic member and the through hole are arranged along the longitudinal direction of the elastic member. It is arranged to cross a vertical plane.

  According to this configuration, since the vicinity of the through hole can be supported by the elastic member, the deformation of the through hole of the seat cushion pad can be suppressed and the load on the harness member can be reduced.

  Moreover, in the above-described configuration, the through hole can be arranged at a position that does not overlap the elastic member when viewed from below.

  According to this, since the elastic member does not get in the way during the operation of passing the harness member through the through hole, the operation can be facilitated. Moreover, since a through-hole and an elastic member do not overlap, interference with a harness member and an elastic member can be suppressed.

  In the above-described configuration, the elastic member can be formed along the periphery of the through hole.

  According to this, the vicinity of the through hole can be better supported by the elastic member.

  In the above-described configuration, the elastic member may be an S spring that is bent a plurality of times in the short direction of the elastic member.

  According to this, the seat cushion pad can be favorably supported by the S spring.

  Further, in the above-described configuration, the S spring is formed to extend in the left-right direction, and is provided one by one apart from the front and rear, and the through hole is provided corresponding to the S spring provided on the front side. The portion surrounding the through hole of the S spring can be configured to be opened rearward.

  According to this, since the through hole is provided corresponding to the front S spring to which the load is less applied than the rear S spring to which a large load from the occupant is applied, deformation of the through hole is suppressed, The load can be reduced. Moreover, even if the rear part of the seat cushion pad sinks greatly due to the load from the occupant, even if the through hole and the harness member in the through hole are pulled and moved rearward, the part surrounding the through hole of the S spring is rearward. Therefore, the interference between the harness member and the S spring can be suppressed.

  In the above configuration, the through hole can be formed such that the lower opening is larger than the upper opening.

  According to this, compared with the structure which forms a through-hole straightly, for example, since the lower side of a through-hole is expanded, the weight reduction of the seat cushion pad can be aimed at. Moreover, since the upper opening of the through hole is small, for example, compared to a structure for increasing the weight of the upper opening of the through hole so as to reduce the weight, the occupant feels the presence of the through hole when sitting on the seat cushion pad. A sense of incongruity can be suppressed.

  According to the present invention, since the elastic member and the through hole are arranged so as to cross one vertical plane along the longitudinal direction of the elastic member, the vicinity of the through hole is supported by the elastic member and the deformation of the vicinity of the through hole is prevented. It can suppress, and the load to a harness member can be reduced.

  In addition, according to the present invention, by arranging the through hole at a position that does not overlap with the elastic member when viewed from below, the elastic member does not get in the way when the harness member is passed through the through hole. Can be. Moreover, since a through-hole and an elastic member do not overlap, interference with a harness member and an elastic member can be suppressed.

  According to the present invention, the vicinity of the through hole can be better supported by the elastic member by forming the elastic member along the periphery of the through hole.

  Further, according to the present invention, the elastic member is an S spring, so that the seat cushion pad can be favorably supported by the S spring.

  Further, according to the present invention, the through hole can be prevented from being deformed by providing the through hole corresponding to the front S spring to which the load is less likely to be applied than the rear S spring to which a large load from the occupant is applied. Therefore, the load on the harness member can be reduced. Further, by opening the portion surrounding the through hole of the S spring toward the rear, the rear part of the seat cushion pad is greatly sunk by the load from the occupant, and the through hole and the harness member in the through hole are pulled backward. Even if it is moved, interference between the harness member and the S spring can be suppressed.

  Also, according to the present invention, the seat cushion pad is formed by forming the through hole so that the lower opening is larger than the upper opening, for example, compared to a configuration in which the through hole is formed straight in the vertical direction. Can be reduced in weight. Further, since the opening on the upper side of the through hole is small, it is possible to suppress a sense of incongruity caused by the presence of the through hole when the occupant sits on the seat cushion pad.

1 is a perspective view of a vehicle seat as a vehicle seat according to an embodiment. It is a perspective view of a seat frame built in a vehicle seat. It is the perspective view (a) which looked at the seat cushion pad from the bottom, and sectional drawing (b) near a through-hole. It is the bottom view which looked at S spring and a seat cushion pad from the bottom. It is the perspective view which looked at the skin attachment member and the skin material from the bottom. It is a bottom view which shows the form which has arrange | positioned so that a through-hole may protrude from the width | variety of the front-back direction of S spring.

  Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, first, the overall configuration of a vehicle seat as an example of a vehicle seat will be briefly described, and then the characteristic part of the present invention will be described in detail.

  As shown in FIG. 1, the vehicle seat S is a seat used for a driver's seat of an automobile, and mainly includes a seat cushion S1, a seat back S2, and a headrest S3.

  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 the seat cushion frame F1 with a seat cushion pad 100 (see FIG. 3) made of a cushion material such as urethane foam and a skin material 200 (see FIG. 5) made of synthetic leather or fabric. The seat back S2 is configured by covering the seat back frame F2 with a seat back pad made of a cushion material and a skin material made of synthetic leather or fabric.

  The seat cushion frame F1 is a frame formed in a substantially rectangular frame shape, and is installed on a slider SL supported so as to be movable back and forth with respect to each of a pair of left and right slide rails SR provided on the floor of the automobile. Yes. Thereby, the vehicle seat S can adjust the front-rear position.

  The lower portion of the seat back frame F2 is rotatably connected to the rear portion of the seat cushion frame F1 via a reclining mechanism RL. As a result, the seat back S2 can tilt forward and backward with respect to the seat cushion S1.

  In this specification, front and rear, left and right, and top and bottom are based on an occupant seated on the vehicle seat S in a state where the seat back S2 is not tilted by the reclining mechanism RL.

Next, the seat cushion frame F1 and the seat cushion pad 100 will be described in detail.
The seat cushion frame F1 includes a pair of left and right side frames 10, two S springs 20 as an example of an elastic member spanned between the left and right side frames 10, and a pan frame 30 that connects the front portions of the side frames 10. The connecting pipe 40 for connecting the rear end portions of the side frames 10 is mainly provided.

  The left and right side frames 10 are metal frames extending in the front-rear direction, and are spaced apart from each other on the left and right. A pan frame 30 is disposed in a substantially front half portion of the left and right side frames 10, and two S springs 20 are attached to a substantially half portion in a state where they are separated from each other in the front-rear direction.

The S spring 20 is a long spring extending in the left-right direction, and is formed to be bent a plurality of times in the front-rear direction (short direction of the S spring 20). Specifically, the S spring 20 has a plurality of front bent portions 21 that are bent in a substantially arc shape so as to be convex toward the front side, and a rear bend that is bent in a substantially arc shape so as to be convex toward the rear side. A plurality of connecting portions 23 that extend substantially linearly and connect the front bent portion 21 and the rear bent portion 22, and the front bent portion 21 or the rear bent portion 22 arranged on the outermost side. And an engaging portion 24 that engages with the side frame 10.
The pan frame 30 is formed in a substantially box shape that opens upward and rearward.

  A seat cushion pad 100 shown in FIG. 3A is placed on the left and right side frames 10, the pan frame 30, and the two S springs 20. Accordingly, the seat cushion pad 100 is supported from below by the side frames 10, the pan frame 30, and the S springs 20.

  As shown in FIGS. 3A and 3B, the harness member 310 of the seating sensor 300 for detecting that the occupant is seated on the seat cushion S1 is inserted through the substantially central portion of the seat cushion pad 100. The through hole 110 is formed so as to penetrate vertically. The through hole 110 is a rectangular hole, and is formed such that the lower opening 112 is larger than the upper opening 111.

  Thereby, compared with the structure which forms a through-hole straightly in the perpendicular direction, for example, since the lower side of the through-hole 110 is expanded, the weight of the seat cushion pad 100 can be reduced correspondingly. Further, since the upper opening 111 of the through hole 110 is small, for example, the presence of the through hole 110 when the occupant sits on the seat cushion pad 100 is reduced compared to a structure in which the upper opening of the through hole is increased to reduce the weight. It is possible to suppress the uncomfortable feeling caused by feeling.

  As shown in FIG. 4, the through hole 110 is disposed at the same position in the front-rear direction as the front S spring 20 of the two front and rear S springs 20. Specifically, a part of the through hole 110 and a part of the front S spring 20 are located at the same position in the front-rear direction (on one vertical plane PF along the left-right direction). In other words, the through hole 110 and the front S spring 20 are arranged so as to cross one vertical plane PF along the left-right direction (the longitudinal direction of the S spring 20).

  Thereby, since the vicinity of the through hole 110 can be supported by the front S spring 20, it is possible to suppress the deformation of the through hole 110 and reduce the load on the harness member 310. Further, since the through-hole 110 is provided at a position corresponding to the front S spring 20 to which a load is less likely to be applied than the rear S spring 20 to which a large load from the occupant is applied, for example, at a position corresponding to the rear S spring. Compared with the structure in which the through hole is provided, the deformation of the through hole 110 can be further suppressed, and the load on the harness member 310 can be further reduced.

  Further, the through hole 110 is disposed at a position where it does not overlap with the S spring 20 when viewed from below, specifically between the pair of connecting portions 23 of the S spring 20. As a result, the S spring 20 does not get in the way during the operation of passing the harness member 310 through the through-hole 110, so that the operation can be facilitated. Moreover, since the through-hole 110 and the S spring 20 do not overlap, it is possible to suppress interference between the harness member 310 and the S spring 20.

  In addition, the pair of connecting portions 23 are formed close to the through hole 110 so as to follow the peripheral edge of the rectangular through hole 110. As a result, the vicinity of the through hole 110 can be better supported by the connecting portion 23 of the S spring 20.

  Further, a portion surrounding the through hole 110 of the S spring 20, that is, a concave portion constituted by the front bent portion 21 and the pair of connecting portions 23 is formed so as to be opened rearward. Thereby, even if the rear part of the seat cushion pad 100 sinks greatly due to the load from the occupant, the penetration of the S spring 20 even if the through hole 110 and the harness member 310 in the through hole 110 are pulled and moved rearward. Since the portion surrounding the hole 110 is open facing back, interference between the harness member 310 and the S spring 20 can be suppressed.

  As shown in FIGS. 2 and 5, the connecting pipe 40 is a cylindrical pipe, and a skin attachment member 50 is fixed to the substantially central portion thereof by welding or the like. The skin attachment member 50 is a member formed by bending a cylindrical metal member, and mainly includes two engaged portions 51, a concave portion 52 provided between each engaged portion 51, and each And an attachment portion 53 provided on the outer side of the engaged portion 51 in the left-right direction.

  Each engaged portion 51 is a bar-like portion extending in the left-right direction, and is disposed apart from each other in the left-right direction, and is disposed at a position away from the connection pipe 40. Each engaged portion 51 is engaged with two engaging portions 210 provided on the skin material 200.

The concave portion 52 is formed so as to open to the lower side (the side opposite to the connecting pipe 40), and both end portions thereof are connected to the inner ends in the left-right direction of the engaged portions 51.
The attachment portion 53 extends from the end portion on the outer side in the left-right direction of each engaged portion 51 toward the upper side (connection pipe 40 side), and the tip thereof is bent along the peripheral surface of the connection pipe 40.

  And the concave shape part 52 and each attachment part 53 are being fixed to the connection pipe 40 by welding etc. As shown in FIG. Thereby, compared with what fixes the both ends (two places) of a U-shaped skin attachment member to a connection pipe, for example, it is possible to fix the skin attachment member 50 to the connection pipe 40 firmly at three places. .

  Further, for example, a heater harness member 400 is disposed inside the recessed portion 52. Here, for example, in a structure in which both ends of the U-shaped skin attachment member are fixed to the connection pipe, the harness member must be passed between the skin attachment member and the connection pipe, and the arrangement work of the harness member becomes complicated. . On the other hand, when the center part of the skin attachment member 50 is the concave part 52 as in the present embodiment, the harness member 400 is easily inserted into the inside (on the connecting pipe 40 side) from the opening of the concave part 52. Therefore, the arrangement work of the harness member 400 can be facilitated.

  The two engaging portions 210 are arranged at intervals in the left-right direction at the rear end portion of the skin material 200, and the front ends thereof are bent along the peripheral surface of the engaged portion 51. It can be engaged with the joint portion 51. The engaging portion 210 is also provided as appropriate at the other end of the skin material 200. The portion 220 between the two engaging portions 210 described above in the skin material 200 faces the harness member 400. Thereby, it is possible to suppress the occupant from touching the harness member 400 with the skin material 200.

  Although the embodiments of the present invention have been described above, the present invention can be implemented with appropriate modifications as shown in other embodiments below.

  In the above embodiment, the through hole 110 is disposed between the pair of connecting portions 23. However, the present invention is not limited to this, and the through hole 110 may be disposed in the U-shaped front bent portion 21 or a pair of rear portions, for example. You may arrange | position between the side bending parts 22. FIG. Further, the through-hole 110 is not necessarily arranged within the width in the front-rear direction of the S spring 20. For example, as shown in FIG. 6, the through-hole 110 is arranged so as to protrude outward from the width in the front-rear direction of the S spring 20. Also good. That is, it is only necessary that the through hole 110 and the S spring 20 are arranged so as to cross one vertical plane PF along the left-right direction.

  In the above embodiment, the S spring 20 (elastic member) is formed to extend in the left-right direction, but the present invention is not limited to this, and the elastic member may extend from one end side to the other end side of the seat cushion pad. For example, you may extend in the front-back direction.

  In the embodiment, the through hole 110 is a rectangular hole, but the present invention is not limited to this, and may be a circular hole or a polygonal hole other than a rectangle.

  In the above-described embodiment, the S spring 20 is exemplified as the elastic member, but the present invention is not limited to this, and may be, for example, another wire spring or a leaf spring. However, when the S spring is used, the seat cushion pad can be favorably supported as compared with, for example, a linear wire spring.

  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, the sheet | seat used for a ship, an aircraft, etc. It can also be applied to.

20 S spring 100 seat cushion pad 110 through-hole 310 harness member PF vertical surface S vehicle seat S1 seat cushion S2 seat back

Claims (6)

A vehicle seat comprising a seat cushion and a seat back,
The seat cushion is
A seat cushion pad having a through hole through which the harness member is inserted;
The seat cushion pad is disposed so as to extend from one end side to the other end side, and includes a long elastic member that supports the seat cushion pad from below,
The vehicle seat, wherein the elastic member and the through hole are arranged so as to cross one vertical plane along a longitudinal direction of the elastic member.   The vehicle seat according to claim 1, wherein the through hole is disposed at a position that does not overlap the elastic member when viewed from below.   The vehicle seat according to claim 2, wherein the elastic member is formed along the periphery of the through hole.   The vehicle seat according to claim 2, wherein the elastic member is an S spring that is bent a plurality of times in a short direction of the elastic member. The S springs are formed to extend in the left-right direction, and are provided one by one apart in the front-rear direction,
The said through-hole is provided corresponding to the S spring provided in the front side, The part surrounding the said through-hole of the said S spring is opened toward the back, The Claim 4 characterized by the above-mentioned. Vehicle seat.   The vehicle seat according to any one of claims 1 to 5, wherein the through hole is formed such that a lower opening is larger than an upper opening.

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