JP6627931B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a support member for supporting an occupant.

  2. Description of the Related Art A seat cushion having a frame-shaped cushion frame and having an S spring as a support member for supporting an occupant mounted on a front frame and a rear frame of the cushion frame is known (Patent Document 1). This seat cushion forms a groove by processing the connecting shaft constituting the rear frame so that the S spring does not shift to the left and right, and engages the retainer with the end of the S spring engaged with this groove. I have.

JP 2002-225600 A

  However, as in Patent Document 1, there is a problem that processing the rear frame significantly increases the cost.

Therefore, an object of the present invention is to provide a vehicle seat that can suppress displacement of a support member with a simple structure.
Another object of the present invention is to suppress generation of sound.

In order to achieve the above-described object, the vehicle seat of the present invention includes a pair of side frames arranged to be separated from each other left and right, and a pair of connection frames arranged to be separated from each other and connecting the pair of side frames, A support member having a main body disposed between the pair of connection frames, and a hook extending from the main body and hooked on the pair of connection frames, and supported by the pair of connection frames, supporting the occupant. And a cover member that covers the side frame.
The main body portion has a regulating portion that regulates the position of the support member in the left-right direction by contacting the cover member.

  According to such a configuration, the position of the support member in the left-right direction can be regulated by bringing the regulation portion provided on the main body of the support member into contact with the cover member, so that the support member has a simple structure. Deviation can be suppressed. Therefore, an increase in the cost of the vehicle seat can be suppressed.

In the vehicle seat described above, the cover member may be configured to have an inner wall portion that is disposed inside the left and right sides of the side frame.
In this case, the restricting portion may be configured to abut on the inner wall portion from the outside in the left-right direction.
Further, the restricting portion may be configured to contact the inner wall portion from the inner side in the left-right direction.

  In the vehicle seat described above, the cover member may be configured to cover a periphery of a portion where the connection frame of the side frame is connected.

  In this case, the cover member may have an extension that extends inward in the left-right direction along the connection frame. And the latch part can be set as the structure which does not contact an extension part.

  In the vehicle seat described above, the cover member is desirably made of resin.

  As described above, since the cover member is made of the resin, it is possible to suppress the generation of a sound when the restricting portion is in contact with the cover member.

  In the vehicle seat described above, the support member may include a metal wire and a resin member that covers at least a part of the metal wire. In this case, it is desirable that the restricting portion is formed of a resin member.

  As described above, since the restricting portion is formed of the resin member, it is possible to suppress the generation of sound when the restricting portion is in contact with the cover member.

  ADVANTAGE OF THE INVENTION According to this invention, the displacement of the support member which supports an occupant can be suppressed with a simple structure.

  Further, according to the present invention, generation of sound can be suppressed.

FIG. 1 is a diagram illustrating a vehicle seat as a vehicle seat according to an embodiment. It is a perspective view showing a cushion frame and a support member in a 1st embodiment. It is sectional drawing which cut | disconnected the cushion frame in 1st Embodiment in the cross section which passes through a 1st inner wall part and a regulation part. It is sectional drawing which cut the cushion frame in 2nd Embodiment by the cross section which passes through a 1st inner wall part and a regulation part.

[First Embodiment]
Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings. In addition, in this specification, front and rear, left and right, and up and down are based on the occupant sitting on the seat. The inside and outside in the left-right direction are based on the seat, not the vehicle.
As shown in FIG. 1, the vehicle seat according to the present embodiment is configured as a vehicle seat S used in a driver's seat or a passenger seat of an automobile, and mainly includes a seat cushion S1 and a seat back S2. It has.

  Inside the seat cushion S1, a cushion frame F1 as shown in FIG. 2, which constitutes a frame of the seat cushion S1, is incorporated. The seat cushion S1 is configured by covering a pad made of urethane foam or the like and a skin material made of cloth, leather, or the like on the cushion frame F1. Although not shown, the seat back S2 is configured by covering a back frame constituting a frame of the seat back S2 with a pad and a skin material.

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, a pan frame 23, and a cover member 100.
The side frames 10 are arranged as a pair separated from each other in the left and right directions.
The front frame 21 and the rear frame 22 are arranged apart from each other in the front and rear directions.
The front frame 21 is formed of a metal pipe having a circular cross section, and connects the front portions 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 rear portions of the pair of side frames 10.
The pan frame 23 is a frame made of a metal plate, and connects the front portions 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 separated from each other in a left and right direction, and a pair of upper rails 32 provided to be slidably engaged with the respective lower rails 31 back and forth. Consists of The lower rail 31 is fixed to a vehicle floor (not shown).

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

  The front link 35 and the rear link 36 together with the upper rail 32 and the side frame 10 form a four-bar link. 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).

  The rear frame 22 is connected to the side frame 10 via a cylindrical bracket 81. The left and right inner ends of the bracket 81 are fitted to the outside of the rear frame 22 and are welded to the rear frame 22 by welding. The bracket 81 is rotatably supported by the side frame 10 so that the left and right outer ends do not come off the side frame 10. Thereby, the rear frame 22 is assembled to the side frame 10 so as not to come off from the side frame 10, and is rotatably supported by the side frame 10.

  The above-described rear link 36 is inserted into the bracket 81 and is welded to the bracket 81. Thereby, the rear link 36 can rotate integrally with the bracket 81 and the rear frame 22.

  The cover member 100 is made of resin and covers the rear part of the side frame 10. Although the cover member 100 is provided on each of the left and right side frames 10, only the right cover member 100 is shown in FIG. 2 and the left cover member 100 is omitted.

  The cover member 100 includes an upper wall portion 110 that covers the upper surface of the side frame 10, an inclined portion 120 extending inward in the left-right direction from the upper wall portion 110, a first inner wall portion 130 extending downward from the inclined portion 120, and an inclined portion 120. And a second inner wall 140 extending downward from the upper wall 110 on the rear side.

The inclined portion 120 is provided on the front side of the rear frame 22. As shown in FIG. 3, the inclined portion 120 extends so as to be located lower as it goes inward in the left-right direction.
The first inner wall portion 130 is an example of an inner wall portion, and is disposed inside the side frame 10 and the rear link 36 in the left-right direction.

  Returning to FIG. 2, the second inner wall portion 140 covers the periphery of the portion of the side frame 10 to which the rear frame 22 is connected. The second inner wall 140 has an extension 150 extending inward in the left-right direction along the rear frame 22. Specifically, the extending portion 150 is a wall protruding inward in the left-right direction from the second inner wall portion 140 and has an arc shape along the rear end of the rear link 36.

A support member 50 for supporting an occupant is arranged 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 includes a main body 51 that is a portion that supports an occupant disposed between the pair of connection frames, and a front frame 21 that extends from the main body 51 and is hooked to the pair of connection frames. And a hook 53 that is hooked to the rear frame 22. Each of the hooks 52 and 53 has a hook shape with a semicircular cross section that follows the outer shapes of the front frame 21 and the rear frame 22.
The support member 50 is bridged between the front frame 21 and the rear frame 22 by the hook portion 52 being hooked on the front frame 21 and the hook portion 53 being hooked on 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. Therefore, the corrosion of the metal wire 61 can be suppressed by the resin member 62 without performing a high rust prevention treatment on the metal wire 61.

  The three hooking portions 53 hooked to the rear frame 22 are provided on the left and right sides. The left and right hooks 53 are arranged at positions separated from the respective parts of the cover member 100 such as the extension 150.

  The main body portion 51 includes a wing portion 51A extending upward and leftward in the left and right direction, an extending portion 51B extending below the wing portion 51A in the left and right direction, and a regulating portion 51C extending upward from the extending portion 51B. And

The wing portion 51A, together with the inclined portion 120 of the cover member 100, supports the side portion of the buttocks of the occupant.
As shown in FIG. 3, the upper end portion of the wing portion 51 </ b> A is provided at a position away from the upper end of the first inner wall portion 130 inward in the left-right direction. The wing portion 51A is separated from the inclined portion 120, and the inclined portion 120 does not restrict the movement of the wing portion 51A.
Between the wing portion 51A and the extension portion 51B, a reinforcing portion 51D connecting the wing portion 51A and the extension portion 51B is formed. Thus, the provision of the reinforcing portion 51D reinforces the wing portion 51A.

  The restricting portion 51C is disposed outside the first inner wall portion 130 of the cover member 100 in the left-right direction, and is adjacent to the first inner wall portion 130. Then, when the support member 50 attempts to move to the left, the right regulating portion 51C abuts on the first inner wall portion 130 from the right side, that is, from the outside in the left and right direction, and thereby the position of the support member 50 in the left and right direction. Regulate. The restricting portion 51C is formed of a resin member 62. Although not shown, the left regulating portion 51C is also disposed outside the first inner wall portion 130 of the left cover member 100 in the left-right direction, and when the support member 50 attempts to move to the right, the first inner wall portion 130C is formed. Abut on the left side, that is, from the outside in the left-right direction.

  FIG. 3 shows a state in which the restricting portion 51C is in contact with the first inner wall portion 130. However, in order to facilitate the assembly of the support member 50 to the cushion frame F1, the restricting portion is normally used. There should be some play between 51C and the first inner wall 130. However, the play between the left and right restricting portions 51C and the first inner wall portion 130 is small, for example, 10 mm or less so that the restricting portions 51C can restrict the position of the support member 50 in the left-right direction. Also, the play between the restricting portion 51C and the first inner wall portion 130 is smaller than the distance between the extending portion 150 of the cover member 100 and the engaging portion 53 of the support member 50, and even if the support member 50 moves left and right. The hook 53 does not contact the extension 150.

  According to the vehicle seat S configured as described above, the occupant is repeatedly seated on the seat cushion S1, and the support member 50 is displaced in the left-right direction due to the repeated lateral force applied during seating. In this case, the right or left regulating portion 51C abuts on the first inner wall portion 130 of the cover member 100, so that the further movement of the support member 50 is regulated. Since the cover member 100 is a member normally provided in a vehicle seat, according to the present embodiment, the shift of the support member 50 can be suppressed with a simple structure while suppressing an increase in manufacturing cost.

  When a load from an occupant is applied to the support member 50 while the restricting portion 51C is in contact with the first inner wall portion 130, the first inner wall portion 130 and the restricting portion 51C may rub against each other to generate a noise. However, since the restricting portion 51C is made of the resin member 62 and the first inner wall portion 130 is made of resin, the generation of this sound can be suppressed.

[Second embodiment]
Next, a second embodiment of the present invention will be described. The vehicle seat according to the second embodiment differs from the first embodiment only in part of the configuration of the support member 50, and therefore, only this different portion will be described.

  As shown in FIG. 4, in the second embodiment, the restricting portion 51 </ b> C of the support member 50 does not abut on the first inner wall portion 130 of the cover member 100 from the outside in the left-right direction, but abuts from the inside in the left-right direction. It is configured as follows. Specifically, the restricting portion 51C is disposed on the inner side in the left-right direction of the first inner wall portion 130 and is adjacent to the first inner wall portion 130. When the support member 50 attempts to move to the right, the right regulating portion 51C regulates the position of the support member 50 in the left-right direction by abutting the first inner wall portion 130 from the left. When the support member 50 attempts to move to the left, the left restricting portion 51C restricts the position of the support member 50 in the left-right direction by abutting the first inner wall portion 130 from the right side.

  With the vehicle seat S configured as described above, the position of the support member 50 can be regulated similarly to the first embodiment.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment. The specific configuration can be appropriately changed without departing from the spirit of the invention as described below.

  In the second embodiment, the restricting portion 51C provided separately from the wing portion 51A is configured to abut on the first inner wall portion 130 from the inside in the left-right direction. You may comprise so that it may contact from the direction inside. That is, the wing portion 51 </ b> A may be a restricting portion that restricts the position of the support member 50 in the left-right direction by contacting the cover member 100.

  In the first embodiment, a case has been described in which the regulating portions 51C are provided on the left and right sides of the main body portion 51, and the regulating portions 51C abut on the first inner wall portion 130 of the cover member 100 from the outside in the left-right direction. A pair of restricting portions provided so as to sandwich the first inner wall portion 130 on one of the left and right sides of the first inner wall portion 130, and the pair of restricting portions contact the first inner wall portion 130 from inside and outside in the left-right direction. Is also good. Further, the regulating portion of the present invention may be provided on only one of the left and right sides, and the regulating portion may be in contact with the cover member 100, and the other of the left and right may employ another position regulating structure different from the present invention. .

  In the above embodiment, the configuration in which the support member 50 is disposed on the cushion frame F1 has been described, but the support member may be disposed on the seatback frame. Also in this case, it is possible to restrict the position of the support member by vertically extending the support member with respect to the seat back frame and bringing the main body of the support member into contact with the cover member that covers the side frame. is there.

  Further, in the above-described embodiment, the vehicle seat S mounted on an automobile is exemplified as the vehicle seat, but the vehicle seat is not limited to this, and vehicles other than automobiles, for example, railway vehicles, ships, aircraft, etc. It may be a seat mounted on a vehicle.

  Further, the components described in the above-described embodiment and modified examples may be arbitrarily combined and implemented.

DESCRIPTION OF SYMBOLS 10 Side frame 21 Front frame 22 Rear frame 50 Support member 51 Main part 51C Restriction part 52 Hanging part 53 Hanging part 61 Metal wire 62 Resin member 100 Cover member 130 First inner wall part 150 Extension part S Vehicle seat

Claims (7)

A pair of side frames arranged left and right apart,
A pair of connecting frames arranged apart from each other and connecting the pair of side frames,
A main body portion disposed between the pair of connection frames and not in contact with the pair of connection frames, and a hook portion extending from the main body portion and being hooked in contact with the pair of connection frames, A support member erected on the pair of connection frames and supporting an occupant,
A cover member that covers the side frame,
The main body has a restricting portion extending upward from an end in the left-right direction,
The restricting portion than said upper retainers that abuts against the cover member at a position below the support vehicle seat characterized that you regulating the lateral position of the member.   The main body portion has a wing portion extending upward as going outward in the left-right direction,
  2. The vehicle seat according to claim 1, wherein the restricting portion restricts the position of the support member in the left-right direction by abutting the cover member on the outer side in the left-right direction with respect to the wing portion. 3.   The main body portion has a wing portion extending upward as going outward in the left-right direction,
  2. The vehicle seat according to claim 1, wherein the restricting portion restricts the position of the support member in the left-right direction by contacting the cover member at a position lower than an upper end of the wing portion. 3. .   The vehicle seat according to claim 2, wherein the wings are provided on left and right sides of a rear portion of the main body.   The support member includes a plurality of metal wires, and a resin member that covers at least a part of the metal wires,
  The vehicle seat according to any one of claims 1 to 4, wherein the restricting portion is located on the left and right outer sides of a portion of the metal wire covered with the resin member.   The said restriction part restrict | limits the position of the said support member in the left-right direction by abutting on the said cover member at the same height position as the said side frame, The Claim 1 characterized by the above-mentioned. Vehicle seat according to the paragraph.   With a seat cushion, a seat back, and a headrest,
  The seat cushion includes a seat cushion frame,
  The seat cushion,
    A pair of side frames arranged left and right apart,
    A pair of connecting frames arranged apart from each other and connecting the pair of side frames,
    A main body portion disposed between the pair of connection frames and not in contact with the pair of connection frames, and a hook portion extending from the main body portion and being hooked in contact with the pair of connection frames, A support member erected on the pair of connection frames and supporting an occupant,
    A cover member that covers the side frame,
  The connection frame includes a rear frame that connects rear portions of the pair of side frames, and a front frame that connects front portions of the pair of side frames,
  The seat cushion frame has a pan frame made of a metal plate that connects front portions of the pair of side frames at a position before the front frame,
  The main body has a restricting portion extending upward from an end in the left-right direction,
  The vehicle seat according to claim 1, wherein the restricting portion restricts the position of the support member in the left-right direction by abutting on the cover member at a position lower than an upper end of the hooking portion.

Images