JP6860801B2 - Vehicle seat - Google Patents

Description

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

A seat cushion having a frame-shaped cushion frame and having an S spring as a support member for supporting an occupant is bridged between the front frame and the rear frame of the cushion frame is known (Patent Document 1). In this seat cushion, a groove is formed by processing the connecting shaft constituting the rear frame so that the S spring does not shift to the left or right, and the retainer on which the end of the S spring is hooked is engaged with the groove. There is.

JP-A-2002-225600

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

Accordingly, the present invention shall be the object to provide a vehicle seat capable of suppressing the displacement of the supporting member with a simple structure.

In order to achieve the above object, the vehicle seat of the present invention includes a pair of side frames arranged apart from each other on the left and right, and a pair of connecting frames arranged apart from each other and connecting the pair of side frames. It has a main body portion that is arranged between the pair of connecting frames and does not come into contact with the pair of connecting frames, and a hooking portion that extends from the main body portion and comes into contact with the pair of connecting frames and is hooked. A support member for supporting an occupant and a cover member for covering the side frame are provided, which are erected on the pair of connecting frames.
The main body portion has a flat surface portion arranged between the pair of side frames, extends upward from the flat surface portion, and comes into contact with the cover member at a position below the upper end of the hooking portion. It has a regulating portion that regulates the position of the support member in the left-right direction.

According to such a configuration, the position of the support member in the left-right direction can be regulated by bringing the regulating portion provided on the main body portion of the support member into contact with the cover member. Therefore, the support member has a simple structure. It is possible to suppress the deviation of. Therefore, it is possible to suppress an increase in the cost of the vehicle seat.

Further, the main body portion has a wing portion that extends upward as it goes outward in the left-right direction, and the restricting portion may abut on the cover member on the lateral side in the left-right direction from the wing portion.

Further, the restricting portion may come into contact with the cover member at a position below the upper end of the vane portion.

Further, the vanes may be arranged on the left and right sides of the rear portion of the main body portion.

Further, the support member includes a metal wire rod and a resin member covering at least a part of the metal wire rod, and the regulation portion is arranged outside the portion where the metal wire rod is covered with the resin member in the left-right direction. It may have been done.

Further, the contact portion between the restricting portion and the cover member may be arranged within the range of the side frame in the vertical direction.

Further, the vehicle seat of the present invention includes a seat cushion having a cushion frame, a seat back, and a headrest.
The cushion frame is arranged apart from the left and right side frames on the left and right, and is arranged on the front and rear so as to be separated from each other, and is in front of the front and rear connecting frames that connect the left and right side frames and the front connecting frame. A pan frame that connects the front portions of the left and right side frames at the position of, a cover member that covers the rear portions of the left and right side frames, and the front and rear connecting frames that are arranged between the front and rear connecting frames. A support member having a main body portion that does not contact the frame and a hooking portion that extends from the main body portion and is hooked by contacting the front and rear connecting frames and is erected on the front and rear connecting frames to support an occupant. And.
The main body portion has a flat surface portion arranged between the left and right side frames, extends upward from the flat surface portion, and comes into contact with the cover member at a position below the upper end of the hooking portion. It has a regulating portion that regulates the position of the support member in the left-right direction.

According to such a configuration, the position of the support member in the left-right direction can be regulated by bringing the regulating portion provided on the main body portion of the support member into contact with the cover member. Therefore, the support member has a simple structure. It is possible to suppress the deviation of. Therefore, it is possible to suppress an increase in the cost of the vehicle seat.

According to the present invention, it is possible to suppress the displacement of the support member that supports the occupant with a simple structure.

Further, according to the present invention, it is possible to suppress an increase in the cost of the vehicle seat.

It is a figure which shows the vehicle seat as the vehicle seat which concerns on embodiment. It is a perspective view which shows the cushion frame and the support member in 1st Embodiment. It is sectional drawing which cut the cushion frame in 1st Embodiment by the cross section passing through the 1st inner wall part and the regulation part. It is sectional drawing which cut the cushion frame in 2nd Embodiment by the cross section passing through the 1st inner wall part and the regulation part.

[First Embodiment]
Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings. In this specification, front and rear, left and right, and up and down are based on the occupant sitting on the seat. In addition, 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 of the present embodiment is configured as a vehicle seat S used in a driver's seat, a passenger seat, or the like of an automobile, and is mainly composed of 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 is built in, which constitutes the frame of the seat cushion S1. The seat cushion S1 is formed by covering the cushion frame F1 with a pad made of urethane foam or the like and a skin material made of cloth or leather. Further, although not shown, the seat back S2 is configured by covering the back frame constituting the 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 examples of the pair of connecting frames, a pan frame 23, and a cover member 100.
The side frames 10 are arranged in pairs separated from each other on the left and right sides.
The front frame 21 and the rear frame 22 are arranged so as to be separated from each other in the front-rear direction.
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 to each other 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 adjusting mechanism.
The slide rail mechanism 30 includes a pair of lower rails 31 that extend long in the front-rear direction and are arranged apart from each other on the left and right, and a pair of upper rails 32 that are slidably engaged with each lower rail 31 in the front-rear direction. Consists of. The lower rail 31 is fixed to the floor of a vehicle (not shown).

The height adjusting mechanism includes a pair of front links 35 and a pair of rear links 36.
The upper end of the front link 35 is rotatably connected to the front of the side frame 10 by the pin 35A, and the lower end is rotatably connected to the front of the upper rail 32 by the pin 35B.
The upper end of the rear link 36 is rotatably connected to the side frame 10. Further, the lower end portion of the rear link 36 is rotatably connected to the 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-section 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 the welded portion. Further, the bracket 81 is rotatably supported by the side frame 10 so that the left and right outer ends do not come off from the side frame 10. As a result, 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 rear link 36 is inserted through the bracket 81 and welded to the bracket 81. As a result, 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 portion of the side frame 10. The cover member 100 is provided on each of the left and right side frames 10, but in FIG. 2, only the right cover member 100 is shown, 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 that extends inward in the left-right direction from the upper wall portion 110, a first inner wall portion 130 that extends downward from the inclined portion 120, and an inclined portion 120. It has a second inner wall portion 140 extending downward from the upper wall portion 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 downward toward the inside in the left-right direction.
The first inner wall portion 130 is an example of the inner wall portion, and is arranged 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 to which the rear frame 22 of the side frame 10 is connected. The second inner wall portion 140 has an extending portion 150 extending inward in the left-right direction along the rear frame 22. Specifically, the extending portion 150 is a wall that projects 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 that supports the 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 is a front frame 21 as a main body 51, which is a portion for supporting an occupant arranged between the pair of connecting frames, and a hooking portion extending from the main body 51 and hooked on the pair of connecting frames. It has a hooking portion 52 that is hooked on the rear frame 22 and a hooking portion 53 that is hooked on the rear frame 22. Each of the hooking portions 52 and 53 has a hook shape having a semicircular cross section that follows the outer shape of the front frame 21 and the rear frame 22.
The support member 50 is erected on the front frame 21 and the rear frame 22 by hooking the hooking portion 52 on the front frame 21 and hooking the hooking portion 53 on the rear frame 22.

The support member 50 includes a plurality of metal wire rods 61 and a resin member 62 that covers at least a part of the metal wire rods 61. In the present embodiment, the resin member 62 covers the entire metal wire rod 61. Therefore, even if the metal wire 61 is not subjected to a high rust preventive treatment, the resin member 62 can suppress the corrosion of the metal wire 61.

Three hooking portions 53 hooked on the rear frame 22 are provided on the left and right sides. The left and right hooking portions 53 are arranged at positions separated from each portion of the cover member 100 such as the extending portion 150.

The main body 51 has a wing portion 51A extending upward in the lateral direction toward the left and right of the rear portion, an extension portion 51B extending outward in the left-right direction under the wing portion 51A, and a restricting portion 51C extending upward from the extension portion 51B. And have.

The vane portion 51A supports the side portion of the occupant's buttocks together with the inclined portion 120 of the cover member 100.
As shown in FIG. 3, the upper end portion of the vane portion 51A is provided at a position separated inward in the left-right direction with respect to the upper end portion of the first inner wall portion 130. Further, the vane portion 51A is separated from the inclined portion 120 so that the inclined portion 120 does not regulate the movement of the vane portion 51A.
A reinforcing portion 51D connecting the vane portion 51A and the extension portion 51B is formed between the vane portion 51A and the extension portion 51B. By providing the reinforcing portion 51D in this way, the vane portion 51A is reinforced.

The regulation portion 51C is arranged 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 tries to move to the left, the regulation portion 51C on the right side abuts on the first inner wall portion 130 from the right side, that is, from the outside in the left-right direction, so that the position of the support member 50 in the left-right direction is reached. To regulate. The regulation unit 51C is composed of a resin member 62. Although not shown, the left regulating portion 51C is also arranged outside the first inner wall portion 130 of the left cover member 100 in the left-right direction, and when the support member 50 tries to move to the right, the first inner wall portion 130 It abuts from the left side, that is, from the outside in the left-right direction.

Note that FIG. 3 shows a state in which the regulating portion 51C is in contact with the first inner wall portion 130, but in order to facilitate the assembly of the support member 50 to the cushion frame F1, the regulating portion is normally used. It is preferable that there is some play between the 51C and the first inner wall portion 130. However, the play between the left and right regulating portions 51C and the first inner wall portion 130 is small, for example, set to 10 mm or less so that the position of the support member 50 can be regulated in the left-right direction by the regulating portion 51C. Further, the play between the regulating 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 hooking portion 53 of the support member 50, and even if the support member 50 moves left and right, The hooking portion 53 does not come into contact with the extending portion 150.

According to the vehicle seat S configured as described above, the support member 50 is displaced in the left-right direction due to the occupant repeatedly sitting on the seat cushion S1 and the lateral force repeatedly applied during the seating. In this case, the support member 50 is restricted from moving further by the right or left regulating portion 51C coming into contact with the first inner wall portion 130 of the cover member 100. Since the cover member 100 is a member normally provided on a vehicle seat, according to the present embodiment, it is possible to suppress the displacement of the support member 50 with a simple structure while suppressing an increase in manufacturing cost.

If a load from an occupant is applied to the support member 50 while the regulating portion 51C is in contact with the first inner wall portion 130, the first inner wall portion 130 and the regulating portion 51C may rub against each other and generate a squeaking noise. However, since the regulation portion 51C is composed 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, the second embodiment of the present invention will be described. Since the vehicle seat according to the second embodiment is only partially different in the configuration of the support member 50 from the first embodiment, only this different part will be described.

As shown in FIG. 4, in the second embodiment, the restricting portion 51C of the support member 50 abuts on the first inner wall portion 130 of the cover member 100 from the inside in the left-right direction, not from the outside in the left-right direction. It is configured as follows. Specifically, the regulating portion 51C is arranged inside the first inner wall portion 130 in the left-right direction and is adjacent to the first inner wall portion 130. When the support member 50 tries to move to the right, the right side regulation portion 51C regulates the position of the support member 50 in the left-right direction by contacting the first inner wall portion 130 from the left side. When the support member 50 tries to move to the left, the regulation portion 51C on the left side regulates the position of the support member 50 in the left-right direction by contacting the first inner wall portion 130 from the right side.

The position of the support member 50 can also be regulated by the vehicle seat S configured in this way as in the first embodiment.

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

In the second embodiment, the restricting portion 51C provided separately from the vane portion 51A is configured to abut on the first inner wall portion 130 from the inside in the left-right direction, but the vane portion 51A is left and right on the first inner wall portion 130. It may be configured to abut from the inside in the direction. That is, the vane portion 51A may be a regulating portion that regulates the position of the support member 50 in the left-right direction by abutting on the cover member 100.

In the first embodiment, the regulation portions 51C are provided on the left and right sides of the main body portion 51, and the case where the regulation portions 51C abut on the first inner wall portion 130 of the cover member 100 from the outside in the left-right direction has been described. A pair of restricting portions provided so as to sandwich the first inner wall portion 130 is provided on one of the left and right sides of the above, and the pair of restricting portions abuts on the first inner wall portion 130 from the inside and the outside in the left-right direction. May be 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 sides may adopt a structure of other position regulation different from that of the present invention. ..

In the above-described embodiment, the configuration in which the support member 50 is arranged on the cushion frame F1 has been described, but the support member can also be arranged on the seat back frame. Even in this case, the position of the support member can be regulated by erection of the support member in the vertical direction with respect to the seat back frame and bringing the main body of the support member into contact with the cover member covering the side frame. is there.

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

Further, it is also possible to carry out any combination of the elements described in the above-described embodiments and modifications.

10 Side frame 21 Front frame 22 Rear frame 50 Support member 51 Main body 51C Regulator 52 Hook 53 Hook 61 Metal wire 62 Resin member 100 Cover member 130 First inner wall 150 Extension S Vehicle seat

Claims (7)

A pair of side frames that are separated from each other on the left and right,
A pair of connecting frames arranged apart from each other and connecting the pair of side frames,
It has a main body portion that is arranged between the pair of connecting frames and does not contact the pair of connecting frames, and a hooking portion that extends from the main body portion and is hooked by contacting the pair of connecting frames. A support member that supports the occupant and is installed on the pair of connecting frames.
A cover member that covers the side frame is provided.
The main body
A flat surface portion arranged between the pair of side frames and
It is characterized by having a regulating portion that regulates the position of the supporting member in the left-right direction by extending upward from the flat surface portion and contacting the cover member at a position below the upper end of the hooking portion. Vehicle seats to be used. The main body has wings that extend upward as it goes outward in the left-right direction.
The vehicle seat according to claim 1, wherein the restricting portion abuts on the cover member on the lateral side in the left-right direction from the wing portion. The vehicle seat according to claim 2, wherein the restricting portion abuts on the cover member at a position below the upper end of the wing portion. The vehicle seat according to claim 2 or 3, wherein the wings are arranged on the left and right sides of the rear portion of the main body. 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 any one of claims 1 to 4, wherein the restricting portion is arranged outside the portion covered with the resin member in the left-right direction. The vehicle seat according to any one of claims 1 to 5, wherein the contact portion between the regulating portion and the cover member is arranged within the range of the side frame in the vertical direction. A seat cushion having a cushion frame, a seat back, and a headrest are provided.
The cushion frame is
Left and right side frames that are separated from each other on the left and right,
The front and rear connecting frames, which are arranged apart from each other in the front and rear and connect the left and right side frames,
A pan frame that connects the front parts of the left and right side frames at a position in front of the connecting frame on the front side,
A cover member that covers the rear portions of the left and right side frames, and
It has a main body portion that is arranged between the front and rear connecting frames and does not come into contact with the front and rear connecting frames, and a hooking portion that extends from the main body portion and comes into contact with the front and rear connecting frames and is hooked. A support member for supporting the occupant, which is erected on the front and rear connecting frames, is provided.
The main body
A flat surface portion arranged between the left and right side frames and
It is characterized by having a regulating portion that regulates the position of the supporting member in the left-right direction by extending upward from the flat surface portion and contacting the cover member at a position below the upper end of the hooking portion. Vehicle seats to be used.

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