JP2014100943A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the arrangement path of a harness member in a vehicle seat including a pan frame extending from the front end side to the rear end side of a seat cushion pad.SOLUTION: The vehicle seat includes: a seat cushion pad; and a pan frame 30 which extends from the front end side to the rear end side of the seat cushion pad and supports the seat cushion pad. A pad side through hole 110 which penetrates through the seat cushion pad 100 in a vertical direction is formed at the seat cushion pad 100. A pan frame side through hole 31a which penetrates through the pan frame 30 in the vertical direction is formed at the pan frame 30. The pad side through hole 110 and the pan frame side through hole 31a are disposed so as to be overlapped when viewed in the vertical direction. A harness member 310 is provided so as to pass through the pad side through hole 110 and the pan frame side through hole 31a.

Description

  The present invention relates to a vehicle seat including a pan frame extending from a front end side to a rear end side of a seat cushion pad.

  2. Description of the Related Art Conventionally, a vehicle seat that includes a pan frame that extends from a front end side to a rear end side of a seat cushion pad and supports the seat cushion pad is known (see Patent Document 1).

JP 2004-306869 A

  By the way, in the above-described technique, when the seating sensor is provided on the seat cushion pad, there is a problem that when the harness member for the seating sensor is routed, the pan frame becomes an obstacle and the routing route becomes complicated. .

  Therefore, an object of the present invention is to simplify a route for routing a harness member in a vehicle seat including a pan frame extending from the front end side to the rear end side of the seat cushion pad. Another object of the present invention is to suppress damage to the harness member, to perform wiring work for the harness member, and to increase the rigidity of the pan frame.

  The present invention that solves the above-described problems is a vehicle seat having a seat cushion pad and a pan frame that extends from the front end side to the rear end side of the seat cushion pad and supports the seat cushion pad. The cushion pad is formed with a pad side through hole penetrating in the vertical direction, and the pan frame is formed with a pan frame side through hole penetrating in the vertical direction, and the pad side through hole and the pan frame side through hole are formed. Are arranged so as to overlap when viewed from above and below, and a harness member is provided so as to pass through the pad side through hole and the pan frame side through hole.

  According to this configuration, in the structure including the pan frame extending from the front end side to the rear end side of the seat cushion pad, for example, even when the seat sensor is provided on the seat cushion pad, the harness member for the seat sensor 2 Since it can be pulled out from the upper side of the seat cushion pad to the lower side of the pan frame through the two through holes, the routing route of the harness member can be simplified.

  Further, in the above-described configuration, the pan frame side through hole can be formed as a long hole that is long in the front-rear direction.

  According to this, even when the passenger sitting on the seat cushion pad moves back and forth, the harness member in the pad side through hole moves back and forth as the seat cushion pad moves back and forth, so the harness member Can be prevented from interfering with the edge of the through-hole on the pan frame side, so that damage to the harness member can be suppressed.

  Further, in the above-described configuration, the pad side through hole can be formed in a shape that matches the pan frame side through hole.

  According to this, since the pad side through hole is shaped so as to match the pan frame side through hole, the work (wiring work) of passing the harness member through the two through holes can be facilitated.

  In the above-described configuration, a flange portion bent in the vertical direction can be formed at the edge of the pan frame side through hole.

  According to this, the flange portion can increase the rigidity in the vicinity of the pan frame side through hole of the pan frame. Moreover, since it can suppress that a burr | flash generate | occur | produces in the edge of a pan frame side through-hole by formation of a flange part, damage to a harness member can be suppressed.

  In the above-described configuration, the flange portion may be bent downward and then bent in a direction away from the pan frame side through hole.

  According to this, since it can suppress that a harness member is caught in the front-end | tip of a flange part, damage to a harness member can be suppressed.

  Further, in the above-described configuration, the flange portion is formed to be bent upward, the pad side through hole is disposed on the inner side of the flange portion, and around the pad side through hole of the seat cushion pad. It can be set as the structure into which the site | part has penetrated in the said pan-frame side through-hole.

  According to this, since the part around the pad side through hole of the seat cushion pad enters the pan frame side through hole, interference between the harness member and the pan frame can be suppressed, and damage to the harness member can be suppressed. Can do.

  In the above-described configuration, the pan frame can be provided with a protrusion protruding from the pan frame so as to be adjacent to the pan frame side through hole.

  According to this, the rigidity in the vicinity of the pan frame side through hole of the pan frame can be increased by the convex portion.

  Further, in the above-described configuration, when the two mounting holes for attaching the skin material are formed on the pan frame so as to sandwich the pan frame side through hole therebetween, the convex portion is at least the It can be arranged between the mounting hole and the pan frame side through hole.

  According to this, both the rigidity of the vicinity of the mounting hole in the pan frame and the vicinity of the pan frame side through hole can be enhanced by one convex portion.

  According to the present invention, by arranging the pad side through hole formed in the seat cushion pad and the pan frame side through hole formed in the pan frame so as to overlap each other when viewed from above and below, the harness member is passed through the two through holes. Since it can be pulled out from the lower side of the pan frame to the upper side of the seat cushion pad through the hole, the routing route of the harness member can be simplified.

  In addition, according to the present invention, by forming the pan frame side through hole as a long hole that is long in the front-rear direction, even if the harness member in the pad side through hole moves back and forth, the harness member is Since interference with the edge can be suppressed, damage to the harness member can be suppressed.

  Moreover, according to this invention, the wiring operation | work of a harness member can be made easy by forming a pad side through-hole in the shape corresponding to the pan-frame side through-hole.

  Further, according to the present invention, the flange portion bent in the vertical direction is formed at the edge of the pan frame side through hole, whereby the rigidity of the pan frame near the pan frame side through hole can be increased. Moreover, since it can suppress that a burr | flash generate | occur | produces in the edge of a pan frame side through-hole by formation of a flange part, damage to a harness member can be suppressed.

  Further, according to the present invention, the harness member can be restrained from being caught on the front end of the flange portion by bending the flange portion downward and then bending the flange portion away from the pan frame side through hole. Damage to the member can be suppressed.

  In addition, according to the present invention, the flange portion is bent upward, the pad side through hole is disposed inside the flange portion, and the portion around the pad side through hole of the seat cushion pad enters the pan frame side through hole. By doing so, interference between the harness member and the pan frame can be suppressed, and damage to the harness member can be suppressed.

  In addition, according to the present invention, it is possible to increase the rigidity of the pan frame in the vicinity of the pan frame side through hole by providing the convex portion so as to be adjacent to the pan frame side through hole.

  Further, according to the present invention, by arranging the convex portion between the mounting hole for attaching the skin material and the pan frame side through-hole, by one convex portion, the vicinity of the mounting hole in the pan frame and Both the rigidity in the vicinity of the pan frame side through hole can be enhanced.

1 is a perspective view of a vehicle seat as a vehicle seat according to an embodiment. It is a perspective view which expands and shows a seat cushion frame among seat frames built in a vehicular seat. It is the perspective view which looked at the seat cushion pad from the lower side. It is sectional drawing which shows the structure of the pad side through-hole vicinity of a seat cushion pad. It is the side view which shows a height adjustment mechanism simply, and is the figure (a) which shows the state which raised the front link, and the figure (b) which shows the state which laid down the front link. They are sectional drawing (a) which shows the 1st modification of the structure of a pan-frame side through-hole vicinity, and sectional drawing (b) which shows a 2nd modification. It is sectional drawing which shows the 3rd modification of the structure of the pan-frame side through-hole vicinity.

  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. 4) 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.

  A seating sensor 300 is provided between the seat cushion pad 100 and the skin material 200 described above to detect that an occupant is seated on the seat cushion S1 (see FIG. 4).

  The seat cushion frame F1 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. 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 mainly includes a pair of left and right side frames 10, a connecting pipe 20 that connects the rear ends of the side frames 10, and a pan frame 30 that connects the front part of each side frame 10 and the connecting pipe 20. In preparation.

  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. The front part of the pan frame 30 is fixed to a substantially front half portion of the left and right side frames 10 by a plurality of screws SC, and the connecting pipe 20 is fixed to the rear end part by welding or the like.

  The connecting pipe 20 is a metal cylindrical pipe extending in the left-right direction, and is fixed to a substantially central portion thereof by engaging a rear end portion of the pan frame 30 from above.

  The pan frame 30 is a metal or resin member formed in a substantially box shape opened upward, and is formed to extend from the front end side to the rear end side of the seat cushion pad 100 shown in FIG. In other words, the pan frame 30 is formed so as to cover substantially the entire lower surface of the seat cushion pad 100.

  A seat cushion pad 100 is put on the left and right side frames 10 and the pan frame 30. Thus, the seat cushion pad 100 is supported from below by the side frames 10 and the pan frame 30.

  Specifically, the pan frame 30 mainly includes a bottom wall portion 31, a rear wall portion 32, left and right side wall portions 33 (shown only on the right side), a front wall portion (not shown), and a flange 34. doing.

  The bottom wall portion 31 is formed over substantially the entire lower surface of the seat cushion pad 100, and an elongated hole-like pan frame side through-hole 31 a extending in the front-rear direction penetrates in the vertical direction at a substantially central portion thereof. Is formed. On the other hand, in a substantially central portion of the seat cushion pad 100, a shape matching the pan frame side through hole 31a, that is, a long hole-like pad side through hole 110 that is long in the front-rear direction is formed so as to penetrate vertically. .

  As shown in FIG. 4, in a state where the seat cushion pad 100 is placed on the pan frame 30, the pan frame side through hole 31 a and the pad side through hole 110 are arranged so as to overlap each other when viewed from above and below. . A harness member 310 for the seating sensor 300 is inserted through the two through holes 31a and 110.

  In this way, by passing the harness member 310 for the seating sensor 300 through the two through holes 31a and 110, the harness member 310 can be pulled out from the upper side of the seat cushion pad 100 to the lower side of the pan frame 30. The routing route of 310 can be simplified.

  Further, since the pan frame side through hole 31a is formed as a long hole extending in the front-rear direction, the seat cushion pad 100 moves back and forth while deforming when the occupant sitting on the seat cushion pad 100 moves back and forth. Thus, even if the harness member 310 in the pad side through hole 110 moves back and forth, the harness member 310 can be prevented from interfering with the edge of the pan frame side through hole 31a. Therefore, damage to the harness member 310 can be suppressed.

  Further, since the pad side through hole 110 is formed in a shape that matches the pan frame side through hole 31a, the work (wiring work) of passing the harness member 310 through the two through holes 31a, 110 can be facilitated. It has become.

  As shown in FIG. 2, two attachment holes 31 b for attaching the skin material 200 are formed on the left and right sides of the bread frame side through hole 31 a in the bottom wall portion 31 of the bread frame 30. Each mounting hole 31b is formed in a trapezoidal shape that tapers toward the rear, and is arranged so as to sandwich the rear portion of the pan frame side through hole 31a. In other words, the holes 31a and 31b are arranged so that the center of each mounting hole 31b and the center of the pan frame side through hole 31a are displaced in the front-rear direction.

  Around each mounting hole 31b, an annular bead 31c as an example of a convex portion is formed. The annular bead 31 c is a trapezoidal bead along the mounting hole 31 b and is formed so as to protrude upward from the bottom wall portion 31. A part of the annular bead 31c (a front portion in the left-right direction) is disposed between the pan frame side through hole 31a and the mounting hole 31b, more specifically, adjacent to the pan frame side through hole 31a and the mounting hole 31b. Has been. Thereby, it is possible to increase both the rigidity of the pan frame 30 in the vicinity of the pan frame side through hole 31a and the vicinity of the mounting hole 31b by the single annular bead 31c.

  Further, the annular bead 31c is formed in a trapezoidal shape so that a portion on the inner side in the left-right direction is inclined inward in the left-right direction as it goes forward. That is, since the portion on the inner side in the left-right direction of the annular bead 31c is formed so as to approach the pan frame side through hole 31a toward the front, the pan frame side through hole 31a is reinforced favorably by the annular bead 31c. Is possible.

  In addition, a bent portion 31d having an L shape in cross section that is bent downward from the bottom wall portion 31 is formed on the front side of the pan frame side through hole 31a so as to extend in the left-right direction and to be connected to the left and right side wall portions 33. Yes. Thereby, also by the bending part 31d, it is possible to raise the rigidity of the pan-frame side through-hole 31a vicinity.

  The rear wall portion 32 is formed so as to extend rearward and obliquely upward from the rear end of the bottom wall portion 31, and the upper end portion thereof is formed in a hook shape bent along the peripheral surface of the connection pipe 20. The connecting pipe 20 is engaged.

  The side wall part 33 is formed so as to extend obliquely from the left and right ends of the bottom wall part 31 upward and outward in the left-right direction. A height adjustment mechanism 50 for adjusting the height of the seat cushion frame F <b> 1 is provided between the side wall portion 33 and the side frame 10.

  As shown in FIGS. 5 (a) and 5 (b), the height adjusting mechanism 50 is provided inside the left and right side frames 10 and mainly includes a front link 51, a rear link 52, and an upper link. 53, a slider SL functioning as a lower link, and a spiral spring 54 are mainly provided. The front link 51 and the rear link 52 are each formed in a V shape, and the lower ends thereof are rotatably connected to the front and rear end portions of the slider SL via the front lower connection shaft 55A and the rear lower connection shaft 55B. At the same time, the center portion (portion corresponding to the valley of V) is rotatably connected to the side frame 10 via the center side connecting shaft 55C.

  As a result, the side frame 10, the lower half of the front link 51 and the rear link 52, and the slider SL form a four-bar link. Therefore, when the front link 51 and the rear link 52 are tilted back and forth, The frame 10 moves up and down.

  The upper ends of the front link 51 and the rear link 52 are rotatably connected to the upper link 53 via a front upper connection shaft 55D and a rear upper connection shaft 55E, respectively. As a result, the front link 51, the rear link 52, the upper link 53, and the slider SL constitute a four-bar link. Therefore, when the front link 51 and the rear link 52 are tilted back and forth, the upper link 53 Moves up and down together with the side frame 10.

  The spiral spring 54 is a spring that biases in the direction in which the front link 51 is raised (the direction in which the height of the seat cushion frame F1 is increased), and is disposed on the inner side in the left-right direction with respect to the front link 51 and the upper link 53. The end portion on the side is engaged with the spring engaging portion 14 formed on the side frame 10, and the outer end portion thereof is engaged with the front upper connecting shaft 55D. The front link 51 is configured to tilt forward and backward when power from an operation lever (not shown) is transmitted.

  In the height adjustment mechanism 50 configured as described above, when the side frame 10 is lowered, the occupant operates the operation lever in one direction so as to tilt the front link 51 backward against the urging force of the spiral spring 54. By tilting to the side frame 10, the side frame 10 is lowered. When the side frame 10 is raised, the side frame 10 is raised by tilting the occupant to operate the operation lever in the other direction and raise the front link 51 forward. At this time, the urging force of the spiral spring 54 acts to assist the operation of the occupant operating the operation lever in the other direction.

  The front upper connecting shaft 55D described above is formed so as to protrude inward in the left-right direction with respect to the spiral spring 54. That is, the end portion on the inner side in the left-right direction of the front upper coupling shaft 55 </ b> D is a portion that is disposed on the innermost side in the left-right direction among the respective portions of the height adjustment mechanism 50.

  As shown in FIGS. 2 and 5, the side wall 33 of the pan frame 30 is formed with a through-hole 33a that faces the front upper coupling shaft 55D in the left-right direction. The through hole 33a is an escape portion for suppressing the interference between the front upper connection shaft 55D and the side wall portion 33 of the pan frame 30, and is formed in a shape along the movement locus of the front upper connection shaft 55D with respect to the pan frame 30. Yes.

  That is, the through-hole 33a is formed in an arc shape centered on the front center side connecting shaft 55C. Accordingly, it is possible to suppress interference between the front upper coupling shaft 55D and the side wall portion 33 regardless of the state of the height adjustment mechanism 50 (see FIGS. 5A and 5B). . By providing such a through hole 33a, the distance between the side wall portion 33 and the height adjusting mechanism 50 can be reduced as compared with, for example, a structure in which no through hole is provided. It is possible to do.

  Further, by forming the through hole 33a in a shape along the movement trajectory of the front upper connecting shaft 55D, for example, the through hole is formed in a shape larger than the shape along the movement trajectory of the front upper connecting shaft. Since the size of the hole 33a can be made the minimum necessary size to avoid interference, the rigidity of the pan frame 30 can be increased.

  Further, the through hole 33a is formed so that the front end thereof is positioned below the rear end, and the bottom wall described above is located directly below the lowest end A1 of the front end. A bent portion 31d of the portion 31 is disposed. As a result, it is possible to reinforce the portion from the lowermost end A1 to the bottom wall portion 31 of the through hole 33a where the length from the lower edge of the through hole 33a to the bottom wall portion 31 is the shortest by the bent portion 31d. It has become.

  Moreover, the through-hole 33a is formed so that the ridgeline of the bending part 33b bent in the substantially V shape so that it may become convex in the left-right direction among the side wall parts 33 is formed. Thereby, also by the bending part 33b, the rigidity of the site | part of the through-hole 33a vicinity can be improved.

  The flange 34 is formed to extend outward from the upper edge of the front wall portion (not shown) extending obliquely upward and forward from the front end of the bottom wall portion 31 and from the upper edge of the left and right side wall portions 33. A portion 34a of the flange 34 above the through hole 33a is fastened to the side frame 10 by screws SC. Thereby, it is possible to increase the rigidity in the vicinity of the through hole 33a of the pan frame 30 also by the fastening portion by the screw SC.

  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 following description, components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the embodiment, the reinforcement in the vicinity of the pan frame side through hole 31a is performed by the annular bead 31c, but the present invention is not limited to this. For example, as shown in FIG. 6A, a flange portion 31e bent downward may be formed at the edge of the pan frame side through hole 31a. According to this, the flange portion 31e can increase the rigidity of the pan frame 30 near the pan frame side through hole 31a. Moreover, since it can suppress that a burr | flash produces on the edge of the pan frame side through-hole 31a by formation of the flange part 31e, damage to a harness member can be suppressed.

  6A, when the flange portion 31e is bent downward, as shown in FIG. 6B, the flange portion 31e is bent downward and then the pan frame side through hole 31a. It is desirable to bend away from the direction. According to this, since it is possible to suppress the harness member 310 from being caught on the tip of the flange portion 31e, damage to the harness member 310 can be suppressed.

  Further, as shown in FIG. 7, the flange portion 31f may be formed to be bent upward. In this case, the pad-side through hole 110 is disposed on the inner side of the flange portion 31f, and the portion 111 around the pad-side through hole 110 of the seat cushion pad 100 is allowed to enter the pan frame-side through hole 31a. desirable. According to this, since the part 111 around the pad side through hole 110 of the seat cushion pad 100 enters the pan frame side through hole 31a, interference between the harness member 310 and the pan frame 30 can be suppressed, and the harness Damage to the member 310 can be suppressed.

  In the above embodiment, the pad side through hole 110 and the pan frame side through hole 31a are formed in a long hole shape. However, the present invention is not limited to this, and each through hole is, for example, a circular hole or a polygonal hole. There may be different sizes or shapes. Further, the through holes may be arranged in any way as long as they partially overlap when viewed in the vertical direction.

  In the above-described embodiment, the vicinity of the mounting hole 31b and the vicinity of the pan frame side through hole are reinforced with the annular bead 31c. However, the present invention is not limited to this, and the reinforcing bead has at least the mounting hole and the pan frame side through hole. What is necessary is just to be in the part between holes. Further, the convex portion is not limited to the annular bead 31c described above, and may be a solid projection when the pan frame is made of resin, for example. Further, the convex portion may be provided adjacent to only the pan frame side through hole.

  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.

30 Pan frame 31a Pan frame side through hole 100 Seat cushion pad 110 Pad side through hole 310 Harness member S Vehicle seat

Claims (8)

A vehicle seat having a seat cushion pad and a pan frame extending from the front end side to the rear end side of the seat cushion pad and supporting the seat cushion pad,
The seat cushion pad is formed with a pad side through hole penetrating in the vertical direction,
In the pan frame, a pan frame side through-hole penetrating in the vertical direction is formed,
The pad side through hole and the pan frame side through hole are arranged so as to overlap each other when viewed from above and below,
A vehicle seat, wherein a harness member is provided so as to pass through the pad side through hole and the pan frame side through hole.   The vehicle seat according to claim 1, wherein the pan frame side through hole is formed as a long hole extending in the front-rear direction.   The vehicle seat according to claim 2, wherein the pad side through hole is formed in a shape that matches the pan frame side through hole.   The vehicle seat according to any one of claims 1 to 3, wherein a flange portion bent in a vertical direction is formed at an edge of the pan frame side through hole.   5. The vehicle seat according to claim 4, wherein the flange portion is bent downward and then bent in a direction away from the pan frame side through hole. The flange portion is formed to bend upward,
The pad side through hole is disposed inside the flange portion, and a portion around the pad side through hole of the seat cushion pad is inserted into the pan frame side through hole. 4. The vehicle seat according to 4.   The said bread frame is provided with the convex part which protrudes from the said bread frame so that the said bread frame side through-hole may be adjoined, The any one of Claims 1-6 characterized by the above-mentioned. Vehicle seats. In the pan frame, two attachment holes for attaching the skin material are formed so as to sandwich the pan frame side through-hole,
The vehicle seat according to claim 7, wherein the convex portion is disposed at least between the attachment hole and the pan frame side through hole.

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