JP2018161909A - Vehicular sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular sheet capable of suppressing deviation of a supporting member with a simple structure.SOLUTION: A vehicular sheet includes: a pair of side frames 10 arranged to be separated in right and left; a pair of connection frames (front frame 21 and rear frame 22) which are arranged to be separated from each other and connect the pair of side frames 10; and a supporting member 50 which has a hooking part 53 hooked on the pair of connection frames, is installed on the pair of connection frames, and supports a crew member. The hooking part 53 has a regulation section 53A which abuts on the pair of side frames 10, is rotatably connected to the pair of side frames 10 around a first axis, abuts on a rotary link (rear link 36) rotatably connected to the other member around a second axis 36B which is different from the first axis 36A, and thereby regulates a position in a longitudinal direction of the support member 50.SELECTED DRAWING: Figure 2

Description

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

  A seat cushion having a frame-like cushion frame and spanning an S spring as a support member for supporting an occupant on a front frame and a rear frame of the cushion frame is known (Patent Document 1). In this seat cushion, a connecting shaft constituting the rear frame is formed to form a groove so that the S spring does not shift from side to side, and a retainer on which the end of the S spring is hooked 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 with a simple structure.
Another object of the present invention is to suppress the generation of sound.

In order to achieve the above-described object, a vehicle seat of the present invention includes a pair of side frames that are spaced apart from each other left and right, a pair of connecting frames that are spaced apart from each other and connect the pair of side frames, And a support member that has a latching portion that is latched by the pair of connection frames and that is installed on the pair of connection frames and supports the occupant.
The latching portion is in contact with the pair of side frames, or is connected to the pair of side frames so as to be rotatable around the first axis, and can be rotated to other members around the second axis different from the first axis. It has a restricting part that restricts the position of the support member in the left-right direction by abutting on a rotation link connected to the support member.

  According to such a configuration, the position of the support member in the left-right direction can be regulated by bringing the latching portion of the support member into contact with the side frame or the rotation link. Can be suppressed. For this reason, an increase in the cost of the vehicle seat can be suppressed.

  In the vehicle seat described above, the support member can be configured to 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 made of a resin member.

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

  In the vehicle seat described above, it is desirable that the pivot link pivots integrally with the connection frame, or is rotatably supported by the connection frame.

  With such a configuration, even if the rotation link rotates, the positional relationship between the restricting portion and the rotation link is not easily changed, and the position can be reliably controlled.

  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 a perspective view which shows the cushion frame and support member in 2nd 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, left and right, and top and bottom are based on the passenger sitting on the seat. Further, the inner side and the outer side 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 an automobile, and mainly includes a seat cushion S1 and a seat back S2. It has.

  A cushion frame F1 as shown in FIG. 2 that constitutes the frame of the seat cushion S1 is built in 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 fabric or leather. Moreover, although illustration is abbreviate | omitted, seat back S2 is comprised by putting a pad and a skin material on the back frame which comprises the 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 connecting frames, and a pan frame 23.
A pair of the side frames 10 are disposed so as to be separated from each other on the left and right.
The front frame 21 and the rear frame 22 are spaced apart from each other.
The front frame 21 is made of a metal pipe having a circular cross section, and connects the front portions of the pair of side frames 10.
The rear frame 22 is made of a metal pipe having a circular cross section, and connects the 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 in front of 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. Consists of. 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 as an example of a rotation link.
The front link 35 has an upper end portion rotatably connected to the front portion of the side frame 10 by a pin 35A, and a lower end portion rotatably connected to the front portion of the upper rail 32 by a pin 35B.
The rear link 36 is connected to the side frame 10 so that an upper end portion thereof is rotatable around the first shaft 36A. The lower end of the rear link 36 is connected to a rear portion of an upper rail 32 as an example of another member around a second shaft 36B different from the first shaft 36A 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 structure of each part is substantially left-right symmetric, in FIG. 3, only the cross section of the right side of the cushion frame F1 is shown and demonstrated.
The bracket 81 has a first cylindrical portion 81A and a second cylindrical portion 81B disposed on the outer side 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 ends of the first cylindrical portion 81 </ b> A 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 on the outer side of the side frame 10, and the left and right outer ends 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 supported rotatably by the side frame 10.

  The above-described rear link 36 has a hole 36C, and is welded to the bracket 81 by a 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. Further, since the rear link 36 rotates integrally with the rear frame 22, the first shaft 36 </ b> A coincides with the axis of the rear frame 22.

Returning to FIG. 2, a support member 50 that supports an 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 latched to the main frame 51 that is a portion that supports the occupant, and the latch 52 that is latched to the front frame 21 and the rear frame 22 as a latch that is latched to the pair of connecting frames. It has the latching | locking part 53 used. Each of the latching portions 52 and 53 has a hook shape with a semicircular cross section following the outer shape of the front frame 21 and the rear frame 22.
The support member 50 is installed on the front frame 21 and the rear frame 22 by the hook 52 being hooked on the front frame 21 and the hook 53 being hooked on the rear frame 22.

  The support member 50 includes a plurality of metal wires 61 and a resin member 62 that covers 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, corrosion of the metal wire 61 can be suppressed by the resin member 62 without performing high rust prevention treatment on the metal wire 61.

Three hooking portions 53 hooked to the rear frame 22 are provided on the left and right sides.
As shown in FIG. 3, the latching portion 53 arranged on the rightmost side extends to the right, and the right end portion is a restricting portion 53 </ b> A that can contact the rear link 36. The restricting portion 53A restricts the position of the support member 50 in the left-right direction by coming into contact with the rear link 36 when the support member 50 is about to move to the right. The restricting portion 53 </ b> A is configured by a resin member 62. Although illustration is omitted, the latching portion 53 arranged on the leftmost side also has a symmetrical configuration, and has a restricting portion 53A constituted by a resin member 62 at the left end portion.

  FIG. 3 shows a state in which the restricting portion 53A is in contact with the rear link 36. In order to facilitate the assembly of the support member 50 to the cushion frame F1, the restricting portion 53A is normally connected with the restricting portion 53A. There should be some play between the rear links 36. However, the play with the left and right rear links 36 is small, for example, set to 10 mm or less so that the position of the support member 50 in the left-right direction can be restricted by the restriction portion 53A.

  According to the vehicle seat S configured as described above, the support member 50 is displaced in the left-right direction because the occupant repeatedly sits on the seat cushion S1 and the lateral force is repeatedly applied while sitting. In this case, the right or left restricting portion 53 </ b> A abuts on the rear link 36, so that the support member 50 is restricted from moving further. Since the rear link 36 is a member that is normally provided in a vehicle seat having a height adjustment mechanism, according to the present embodiment, the support member 50 can be configured with a simple structure while suppressing an increase in manufacturing cost. Deviation can be suppressed.

  And, when the load from the occupant is applied to the support member 50 when the restricting portion 53A is in contact with the rear link 36, there is a possibility that the rear link 36 and the restricting portion 53A rub against each other and a noise is generated. Since the restricting portion 53A is configured by the resin member 62, the generation of this sound can be suppressed.

  Further, when the height adjustment mechanism is operated, the rear link 36 rotates. At this time, if the restricting portion 53 </ b> A is in contact with the rear link 36, there is a possibility that the rear link 36 and the restricting portion 53 </ b> A are rubbed, but the restricting portion 53 </ b> A is configured by the resin member 62. Therefore, the generation of this sound can be suppressed. Further, since the rear link 36 rotates integrally with the rear frame 22, even if the rear link 36 rotates, the positional relationship between the restricting portion 53A and the rear link 36 is not easily changed, and the position restriction is reliably performed by the restricting portion 53A. It can be carried out.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. Since the vehicle seat according to the second embodiment is different in part only in the configuration of the support member 50 from the first embodiment, only this different part will be described.

  As shown in FIGS. 4 and 5, in the second embodiment, the latching portion 153 on the rear side of the support member 50 is configured to contact the side frame 10 instead of the rear link 36. Specifically, the latching portion 153 disposed on the rightmost side includes a diameter-enlarged portion 153A that extends radially outward at the right end portion, and a restriction portion 153B that extends from the diameter-enlarged portion 153A toward the side frame 10. Yes. The restricting portion 153B restricts the position of the support member 50 in the left-right direction by contacting the side frame 10 when the support member 50 is about to move to the right. The restricting portion 153 </ b> B is configured by the resin member 62. The latching portion 153 arranged on the leftmost side also has a bilaterally symmetric configuration, and has a regulating portion 153B formed of a resin member 62 at the left end portion.

  The position of the support member 50 can also be regulated by the vehicle seat S configured as described above, similarly to the first embodiment. Since the side frame 10 is a member that is normally provided on the 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.

  And also in 2nd Embodiment, since the control part 153B is comprised with the resin member 62, generation | occurrence | production of a sound can be suppressed.

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

  In the embodiment, the rear link 36 is configured to rotate integrally with the rear frame 22, but may be configured to rotate with respect to the rear frame 22. For example, the rear frame 22 may have a configuration in which an end is fixed to the side frame 10 and the rear link 36 is rotatably supported by the rear frame 22. That is, the rear link 36 may be configured to be rotatably connected to the side frame 10 via the rear frame 22. Also in this case, when the rear link 36 rotates, the positional relationship between the restricting portion 53A and the rear link 36 is not easily changed, and the restricting portion 53A can reliably perform the position restriction.

  In the embodiment, the vehicle seat is provided with the height adjusting mechanism, but the height adjusting mechanism may not be provided. For example, in the second embodiment, even when the rear link 36 is not provided, the position of the support member 50 can be restricted by the restriction portion 153 </ b> B coming into contact with the side frame 10.

  In the first embodiment, the case where both the right restricting portion 53A and the left restricting portion 53A are in contact with the rear link 36 has been described. However, one of the left and right restricting portions is in contact with a rotating link such as a rear link. The other restricting portion may be in contact with the side frame. In addition, the restricting portion of the present invention is provided only on one of the left and right sides, and the restricting portion is in contact with the side frame or the rotation link. May be.

  In the embodiment, the case where the rear latching portions 53 and 153 have the restricting portions 53A and 153B has been described. However, the front latching portion 52 may have the restricting portion. That is, the front side latching part 52 may be in contact with the side frame 10 or the front link 35. When the latching portion 52 is brought into contact with the front link 35, the front link 35 may be disposed inside the side frame 10 in the left-right direction.

  In the embodiment, the configuration in which the support member 50 is disposed on the cushion frame F1 has been described. However, the support member may be disposed on the seat back frame. Even in this case, it is possible to restrict the position of the support member by installing the support member in the vertical direction with respect to the seat back frame and bringing the hooking portion into contact with the side frame or the like.

  Moreover, in the said embodiment, although vehicle seat S mounted in a motor vehicle was illustrated as a vehicle seat, a vehicle seat is not limited to this, For example, vehicles other than a motor vehicle, for example, a rail vehicle, a ship, an 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 30 Slide rail mechanism 35 Front link 36 Rear link 36A 1st axis | shaft 36B 2nd axis | shaft 50 Support member 53 Latch part 53A Restriction part 61 Metal wire material 62 Resin member 81 Bracket 153 Latch part 153B Restriction part F1 Cushion frame S Vehicle seat

Claims (3)

A pair of side frames spaced apart from each other on the left and right;
A pair of connecting frames that are spaced apart from each other and connect the pair of side frames;
A support member for supporting an occupant, which has a hook portion hooked on the pair of connection frames, and is laid on the pair of connection frames;
The latching portion is in contact with the pair of side frames, or is pivotally connected to the pair of side frames around the first axis, and is another member around the second axis different from the first axis. A vehicle seat having a restricting portion that restricts a position in the left-right direction of the support member by abutting on a turning link that is rotatably connected to the support member. The support member includes a metal wire and a resin member that covers at least a part of the metal wire,
The vehicle seat according to claim 1, wherein the restriction portion is configured by the resin member.   The vehicle seat according to claim 1, wherein the rotation link rotates integrally with the connection frame or is rotatably supported by the connection frame.

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