JP6551574B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a support member that supports an occupant.

  There is known a seat cushion which has a frame-shaped cushion frame and which spans an S-spring as a support member for supporting an occupant on a front frame and a rear frame of the cushion frame (Patent Document 1). In this seat cushion, the connecting shaft constituting the rear frame is processed to form a groove so that the S spring does not shift to the left and right, and the groove in which the end of the S spring is engaged is engaged with this groove Yes.

JP 2002-225600 A

  However, as in Patent Document 1, there is a problem that the cost is significantly increased when the rear frame is processed.

Then, an object of this invention is to provide the vehicle seat which can suppress the shift | offset | difference of a supporting member by simple structure .

In order to achieve the above-described object , the vehicle seat is separated from the pair of side frames disposed to the left and right, and is coupled to the pair of connecting frames that are disposed to be separated from each other and couple the pair of side frames. A support member is provided which has a hook portion hooked to the frame and is bridged between the pair of connection frames, and a support member for supporting an occupant, and the connection frame is inserted at a position between the hook portion and the side frame A tubular member is provided.
And a cylindrical member restricts the position of the horizontal direction of a supporting member by contact | abutting to a latching part .
In addition, the vehicle seat includes a pair of side frames spaced apart in the left and right direction, a pair of connecting frames spaced apart from each other, and connecting the pair of side frames, a plate-like main body, and a pair of side frames. A support member for supporting an occupant, having a hook portion hooked to a connection frame, and being bridged between a pair of connection frames, and a position control member for contacting the support member and restricting the position of the support member in the left-right direction And The main body portion has an upward portion and a wall portion rising from the upward portion toward the hook portion, and the position restricting member is located outside the wall portion in the left-right direction .

  According to such a configuration, by bringing the hook portion of the support member into contact with the cylindrical member, the position in the left-right direction of the support member can be regulated, so the shift of the support member can be achieved with a simple structure. Can be suppressed. For this reason, an increase in the cost of the vehicle seat can be suppressed.

  In the vehicle seat described above, it is desirable that the tubular member is not fixed to the connecting frame.

  Thus, by having a configuration in which the tubular member is not fixed to the connection frame, the attachment of the tubular member to the connection frame is simplified.

  In the vehicle seat described above, the cylindrical member may be rotatably supported by the connecting frame.

  As described above, when the tubular member is configured to be rotatable with respect to the connection frame, the contact portion between the tubular member and the hook portion can be hardly worn away.

  In the vehicle seat described above, the cylindrical member may be fixed to the connecting frame.

  As described above, the cylindrical member is fixed to the connection frame, so that the position of the cylindrical member does not shift, so that the position control of the support member can be reliably performed.

  In the vehicle seat described above, the support member can be configured to include a metal wire and a resin member covering at least a part of the metal wire. In this case, it is desirable that a portion of the hooking portion that contacts the cylindrical member be made of a resin member.

  As described above, when the hooking portion is made of the resin member, it is possible to suppress the generation of the sound when the hooking portion is in contact with the cylindrical member.

  In the vehicle seat described above, the cylindrical member is preferably made of resin.

  As described above, when the tubular member is made of resin, it is possible to suppress the generation of sound when the hooking portion is in contact with the tubular member.

  ADVANTAGE OF THE INVENTION According to this invention, the shift | offset | difference of the supporting member which supports a passenger | crew with a simple structure can be suppressed.

  Moreover, according to the present invention, it is possible to suppress the generation of sound.

It is a figure which shows the vehicle seat as a vehicle seat which concerns on embodiment. It is a perspective view which shows the cushion frame and support member in 1st Embodiment. It is sectional drawing along the axial center of the rear frame of the cushion frame in 1st Embodiment. It is sectional drawing along the axial center of the rear frame of the cushion frame in 2nd Embodiment.

First Embodiment
Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings. In the present specification, front and rear, right and left, and upper and lower are based on the occupant sitting on the seat. Further, the inside and the outside in the left-right direction are based on the seat, not the vehicle.
As shown in FIG. 1, the vehicle seat of the present embodiment is configured as a vehicle seat S used in a driver's seat or a passenger seat of a car, and mainly includes a seat cushion S1, a seat back S2, and the like. Is equipped.

  Inside the seat cushion S1, a cushion frame F1 as shown in FIG. 2 is incorporated, which constitutes a frame of the seat cushion S1. The seat cushion S1 is configured by covering a cushion frame F1 with a pad made of urethane foam or the like and a skin material made of cloth, leather or the like. Moreover, although illustration is abbreviate | omitted, seat back S2 is comprised by covering a pad and a skin material on the back frame which comprises the flame | frame of seat back S2.

The cushion frame F1 includes a pair of side frames 10, a front frame 21 and a rear frame 22 as an example of a pair of connection frames, and a pan frame 23.
The side frames 10 are arranged in a pair at intervals in the left and right direction.
The front frame 21 and the rear frame 22 are spaced apart from each other in the front-rear direction.
The front frame 21 is formed of a metal pipe having a circular cross section, and connects the fronts of the pair of side frames 10 to each other.
The rear frame 22 is formed of a metal pipe having a circular cross section, and connects the rears of the pair of side frames 10 to each other.
The pan frame 23 is a frame made of a metal plate, and connects the fronts of the pair of side frames 10 at a position before the front frame 21.

The cushion frame F1 is supported by the slide rail mechanism 30 via a height adjustment mechanism.
The slide rail mechanism 30 includes a pair of lower rails 31 that extend long in the front-rear direction and are spaced apart from each other, and a pair of upper rails 32 that are slidably engaged with each lower rail 31 in the front-rear direction. It consists of The lower rail 31 is fixed to the floor of the vehicle (not shown).

The height adjustment mechanism includes a pair of front links 35 and a pair of rear links 36.
The front link 35 is rotatably connected at its upper end to the front of the side frame 10 by a pin 35A, and is rotatably connected at its lower end to the front of the upper rail 32 by a pin 35B.
An upper end portion of the rear link 36 is rotatably connected to the side frame 10. The rear link 36 is rotatably connected at its lower end to the rear of the upper rail 32 by a pin (not shown).

  The front link 35 and the rear link 36 form a four-bar link together with the upper rail 32 and the side frame 10. The height of the side frame 10 can be changed by rotating the front link 35 or the rear link 36 with respect to the side frame 10 by an electric or manual actuator (not shown).

As shown in FIG. 3, the rear frame 22 is connected to the side frame 10 via a cylindrical bracket 81. In addition, since the configuration of each part is substantially symmetrical, in FIG. 3, only the cross section on the right side of the cushion frame F1 is shown and described.
The bracket 81 has a first cylindrical portion 81A and a second cylindrical portion 81B disposed outside in the left-right direction with respect to the first cylindrical portion 81A. The first cylindrical portion 81A and the second cylindrical portion 81B are connected by a flange 81C protruding outward in the radial direction. The left and right inner end portions of the first cylindrical portion 81A are fitted to the outside of the rear frame 22, and are welded to the rear frame 22 by a welding portion 91.

  The side frame 10 has a circular support hole 11. The second cylindrical portion 81B of the bracket 81 is inserted into the support hole 11, and a washer 85 is fitted to the outside of the side frame 10, and the left and right outer end portions are crimped. Thus, the rear frame 22 is assembled to the side frame 10 so as not to be detached from the side frame 10, and is rotatably supported by the side frame 10.

  The rear link 36 described above has a hole 36C, and is welded to the bracket 81 by the welding portion 92 in a state where the first cylindrical portion 81A of the bracket 81 is inserted into the hole 36C. As a result, the rear link 36 can rotate integrally with the bracket 81 and the rear frame 22.

Returning to FIG. 2, a support member 50 for supporting the occupant is disposed between the pair of side frames 10. The support member 50 is located below the pad of the seat cushion S1 (not shown), and supports the pad of the seat cushion S1 from below, that is, from the side opposite to the occupant.
The support member 50 is a main body 51 which is a portion for supporting an occupant, and a hook portion 52 which is hooked to the front frame 21 as a hook portion which is hooked to the pair of connection frames. And a hooking portion 53. Each hooking portion 52, 53 has a hook shape with a semicircular cross section that conforms to the outer shape of the front frame 21 and the rear frame 22.
The support member 50 is bridged to the front frame 21 and the rear frame 22 by the hooking portion 52 being hooked to the front frame 21 and the hooking portion 53 being hooked to the rear frame 22.

  The support member 50 includes a plurality of metal wires 61 and a resin member 62 covering at least a part of the metal wires 61. In the present embodiment, the resin member 62 covers the entire metal wire 61. For this reason, the corrosion of the metal wire 61 can be suppressed by the resin member 62 even if the metal wire 61 is not subjected to high anticorrosion treatment.

The hooking portion 53 hooked to the rear frame 22 is divided into three on the left and right. The hooking portion 53 is configured by the resin member 62 at the end on the outer side in the left-right direction.
And the collar 70 as an example of a cylindrical member is provided in the position between the latching part 53 on either side and the side frame 10, respectively.

  As shown in FIG. 3, the collar 70 is made of resin and is formed in a cylindrical shape having an insertion hole 71. The collar 70 includes the rear frame 22 and the first cylindrical portion 81A of the bracket 81 in the insertion hole 71, and is provided at a position between the rear link 36 and the hooking portion 53. The collar 70 is not fixed to the rear frame 22 and the bracket 81, but is rotatably supported by the rear frame 22 and the bracket 81. The end of the collar 70 on the outer side in the left-right direction is adjacent to the rear link 36, and the movement to the outer side in the left-right direction is restricted by abutting on the rear link 36.

  The left end of the right collar 70 is adjacent to the latching portion 53 arranged on the rightmost side. Accordingly, when the support member 50 tries to move to the right, the collar 70 abuts on the hooking portion 53 to restrict the position of the support member 50 in the left-right direction. Although illustration is omitted, the right end of the left collar 70 is adjacent to the hooking portion 53 disposed at the leftmost, and the hooking portion 53 is moved when the support member 50 tries to move to the left. The position of the support member 50 in the left-right direction is regulated by abutting on.

  Although FIG. 3 shows the collar 70 in contact with the hooking portion 53 and the rear link 36, in order to facilitate the assembly of the support member 50 to the cushion frame F1, the normal state There should be some play between the latch 53 and the collar 70. However, the play between the collar 70 and the left and right hooking parts 53 in the state where the collar 70 contacts the left and right rear links 36 is small so that the position restriction of the support member 50 in the left and right direction can be performed by the collar 70. For example, it is set to 10 mm or less.

  According to the vehicle seat S configured as described above, the support member 50 is shifted in the left-right direction due to the occupant sitting repeatedly on the seat cushion S1, and the lateral force being repeatedly applied during seating. In this case, the abutment of the right or left hooking portion 53 with the collar 70 restricts the further movement of the support member 50. Since the collar 70 is formed as a separate part from the rear frame 22, it is simpler than suppressing the increase in manufacturing cost as compared with the case where the rear frame 22 itself is processed to provide a portion in contact with the hooking portion 53. The displacement of the support member 50 can be suppressed by the structure.

  Then, when a load from the occupant is applied to the support member 50 when the hooking portion 53 is in contact with the collar 70, the hooking portion 53 and the collar 70 may be rubbed to generate a staining noise. The portion of the hook portion 53 in contact with the collar 70 and the collar 70 are made of the resin member 62, so that the generation of the sound can be suppressed.

  Further, when the height adjustment mechanism is operated, the rear link 36 rotates. At this time, the rear frame 22 and the bracket 81 also rotate with the rear link 36, but since the collar 70 is rotatable with respect to the rear frame 22 and the bracket 81, the relative rotation amount of the hooking portion 53 and the collar 70 is Few. Therefore, as compared with the case where the collar 70 rotates integrally with the rear frame 22 and the bracket 81, it is possible to suppress wear of the abutment portion 53 and the contact portion of the collar 70.

  Further, since the collar 70 is not fixed to the rear frame 22 or the bracket 81, assembling of the collar 70 can be easily performed as compared with the case where the collar 70 is fixed to the rear frame 22 or the bracket 81.

Second Embodiment
Next, a second embodiment of the present invention will be described. The vehicle seat according to the second embodiment does not include the collar 70 as in the first embodiment.

  As shown in FIG. 4, in the second embodiment, the hooking portion 153 on the rear side of the support member 50 is configured to abut on the bracket 81 instead of the collar. Specifically, the latching portion 153 arranged on the rightmost side includes a plate-like portion 153A extending along the rear frame 22, and a regulating portion 153B extending from the right end of the plate-like portion 153A to the rear frame 22 side. Yes. The restricting portion 153 </ b> B contacts the rear frame 22 and is adjacent to the first cylindrical portion 81 </ b> A of the bracket 81. The first cylindrical portion 81A is an example of a cylindrical member, is provided at a position between the hook portion 153 and the side frame 10, and is fixed to the rear frame 22. The first cylindrical portion 81A restricts the position of the support member 50 in the left-right direction by the welding portion 91 abutting on the restricting portion 153B when the support member 50 moves to the right. The restricting portion 153 </ b> B is configured by the resin member 62. The hooking portion 153 disposed on the leftmost side also has a left-right symmetrical configuration, and has a restricting portion 153B formed of the resin member 62 at the left end.

  The position of the support member 50 can also be regulated by the vehicle seat S configured in this manner as in the first embodiment. Since the bracket 81 is a member provided to connect the rear frame 22 to the side frame 10, according to the present embodiment, the shift of the support member 50 can be achieved with a simple structure while suppressing the increase in the manufacturing cost. Can be suppressed.

  Also in the second embodiment, since the restricting portion 153B is formed of the resin member 62, the generation of sound can be suppressed.

  Further, the first cylindrical portion 81A of the bracket 81 is fixed to the rear frame 22 and the rear link 36, and rotates integrally with the rear frame 22 and the rear link 36 when the rear link 36 rotates. Even when the rear link 36 rotates, the positional relationship between the restricting portion 153B and the first cylindrical portion 81A does not easily change, and the position can be reliably controlled by the first cylindrical portion 81A.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. About a specific structure, it can change suitably in the range which does not deviate from the meaning of invention as follows.

  In the embodiment, the vehicle seat includes the height adjustment mechanism, but the height adjustment mechanism may not be provided. For example, in the first embodiment, even if there is no rear link 36, the collar 70 abuts on the side frame 10 to restrict movement of the collar 70 outward in the left-right direction. The position of the support member 50 can be regulated.

  In the first embodiment, the case where the right hooking portion 53 and the left hooking portion 53 abut against the collar 70 has been described, but one of the left and right hooking portions 53 abuts against the collar 70 and the other hooking The portion 53 may be configured to abut on the first cylindrical portion 81A of the bracket 81. In addition, the cylindrical member of the present invention is provided on only one of the left and right, and the cylindrical member is in contact with the hooking part, and the other of the left and right adopts another position regulation structure different from the present invention. Also good.

  Although the case where the cylindrical member is provided in the position between the rear side hooking portions 53 and 153 and the side frame 10 has been described in the above embodiment, the position between the front side hooking portion 52 and the side frame 10 A cylindrical member may be provided on the front side, and the cylindrical member may be brought into contact with the front hooking portion 52.

  In the said embodiment, although the structure by which the support member 50 is arrange | positioned at the cushion frame F1 was demonstrated, a support member can also be arrange | positioned at a seat back frame. Also in this case, the support member is vertically mounted on the seat back frame, and a cylindrical member such as a collar provided between the hook portion and the side frame is brought into contact with the hook portion. Can be regulated.

  In the embodiment, the collar 70 which is an example of the cylindrical member and the first cylindrical portion 81A of the bracket 81 are cylindrical, but the cylindrical member may be formed in a cylindrical shape other than a cylinder. .

  Further, the shape of the cylindrical member does not have to be a completely closed cylindrical shape, and may be a partially cut cylindrical shape having, for example, a C-shaped cross section.

  In the embodiment, the portion of the hooking portion 53 in contact with the cylindrical member is made of the resin member 62, but the portion of the hooking portion in contact with the cylindrical member may be made of metal. .

  Moreover, in the said embodiment, although the vehicle seat S mounted in the motor vehicle was illustrated as a vehicle seat, the vehicle seat is not limited to this, Vehicles other than a motor vehicle, for example, rail cars, ships, aircraft etc. It may be a seat to be mounted on.

  In addition, the elements described in the above-described embodiments and modifications can be implemented in any combination.

DESCRIPTION OF SYMBOLS 10 side frame 21 front frame 22 rear frame 50 support member 53 hooking part 61 metal wire rod 62 resin member 70 color 81 bracket 153 hooking part 153B restricting part S vehicle seat

Claims (5)

A pair of side frames spaced apart on the left and right,
A pair of connecting frames disposed apart from each other and connecting the pair of side frames;
A plate-like body portion, wherein a pair hook portion that is hooked to the connecting frame, which is laid on the pair of the connecting frame, a support member for supporting an occupant,
And a position restricting member which abuts on the support member to restrict the position of the support member in the left-right direction ,
The body portion has an upward portion, and a wall portion rising from the upward portion toward the hook portion,
The vehicle seat according to claim 1, wherein the position restricting member is located outside the wall in the left-right direction .   The pair of side frames have flange portions extending inward in the left-right direction,
  The vehicle seat according to claim 1, wherein the position restricting member abuts on the support member at a position on the inner side in the left-right direction with respect to the flange portion.   It further includes a link of a height adjustment mechanism that is rotatably connected to the side frame,
  The vehicle seat according to claim 1, wherein the position restricting member is disposed adjacent to the link.   The vehicle seat according to claim 3, wherein the position restricting member abuts on the link when position restricting.   The vehicle seat according to any one of claims 1 to 4, wherein an upper end of the position restricting member is located above the main body portion.

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