WO2017077819A1

WO2017077819A1 - Seat for vehicles

Info

Publication number: WO2017077819A1
Application number: PCT/JP2016/080063
Authority: WO
Inventors: 川島功; 檜山宜久
Original assignee: テイ・エステック株式会社
Priority date: 2015-11-05
Filing date: 2016-10-11
Publication date: 2017-05-11
Also published as: JPWO2017077819A1

Abstract

A seat (S) for vehicles is provided with a seat pad (20, 40) having a cushion material (21) and a sheet-like extension section (23, 43) which is provided integrally with the cushion material (21) and extending from the cushion material (21); a seat frame (10, 50) for supporting the seat pad (20, 40); a surface material (30) covering the seat pad (20, 40); and an affixation member (31) for affixing the extension section (23, 43) to the seat frame (10, 50).

Description

Vehicle seat

The present invention relates to a vehicle seat including a seat pad, a seat frame that supports the seat pad, and a skin material that covers the seat pad.

Conventionally, a seat stored in a folded state under a vehicle floor is known (see Japanese Patent Application Laid-Open No. 2014-208499). Such a vehicle seat is required to improve the operability when the seat is stowed or raised, or to be stowed in a compact space, and therefore tends to reduce the thickness of the seat.

Specifically, the seat pad is usually formed in a shape that wraps around to the back side of the seat frame, but in a foldable vehicle seat, the seat pad does not wrap around to the back side of the seat frame. The end of the side portion is held at a position near the back surface of the seat frame, thereby reducing the thickness of the seat. In addition, the seat pad with the reduced thickness is held by the seat frame by the tension of the skin material by fixing the end of the skin material to the seat frame with the skin material covering the seat pad sufficiently stretched. ing.

However, in the prior art, the seat pad is held on the seat frame by the tension of the skin material, so that, for example, when the vehicle seat is switched from the stowed state to the standing state, the seat pad is lifted away from the seat frame. was there. When the seat pad is lifted in this way, for example, when the seat pad is a seat cushion pad, a step is formed between the seat cushion seat surface and the seat cushion seat surfaces of other seats adjacent to the left and right. There was a risk that the appearance would deteriorate.

Therefore, the present inventors have come up with the present invention in the course of research for providing a vehicle seat in which the seat pad is difficult to be separated from the seat frame.

A vehicle seat according to an aspect of the present invention includes a seat pad, a seat frame that supports the seat pad, a skin material that covers the seat pad, and a fixing member. The seat pad includes a cushion material and a sheet-like extending portion provided integrally with the cushion material and extending from the cushion material, and the fixing member includes the extending portion as the seat. Secure to the frame.

According to this configuration, since the extending portion provided integrally with the seat pad is fixed to the seat frame separately from the skin material, the cushion material is fixed to the seat frame, and the seat pad is prevented from separating from the seat frame. Can do.

Further, in the above-described configuration, the cushion material includes a base portion disposed on a front side of the seat frame, and a side portion extending along a side surface of the seat frame from an outer end portion of the base portion. The cushion material may have a shape that ends at the end of the side portion and does not wrap around the back side of the seat frame. Here, “outside” is a term used in contrast to “inside” in a direction orthogonal to the thickness direction of the seat, and “front side” is the side on which the occupant sits on the vehicle seat, and “Back” refers to the opposite side. A surface connecting the front surface and the back surface at their peripheral edges (outer edges) is a “side surface”.

In the structure in which the seat pad (cushion material) is wound up to the back side of the seat frame, the thickness of the entire seat increases and the vehicle seat increases in size. However, according to the configuration described above, the thickness of the entire seat is reduced. Therefore, the vehicle seat can be downsized.

In the above-described configuration, the seat pad may further include a backing cloth that is integrally provided on the back surface of the cushion material, and the extending portion may be provided integrally with the backing cloth.

According to this, by providing the extension part integrally with the backing cloth, the extension part is arranged near the seat frame, so that the extension part can be brought into close contact with the seat frame and firmly fixed.

In the above-described configuration, the extension portion may be a part of the backing cloth.

According to this, since the process of attaching the extension part to the backing cloth becomes unnecessary, the manufacturing cost of the seat pad can be reduced.

In the above-described configuration, the extending portion may be configured to extend outward from the outer surface of the side portion when deployed toward the outer side of the side portion.

According to this, the extension part is extended to a certain extent so as to extend outside the outer surface of the side part of the seat pad when deployed toward the outside of the side part. The operation of attaching to the seat frame while pulling the part can be easily performed.

Further, in the above-described configuration, the fixing member includes a first engagement member provided on the skin material and engageable with the seat frame, and the extending portion includes the seat frame and the first engagement. It may be clamped between the members.

According to this, when the extension portion is fixed to the seat frame by the first engagement member, the skin material is also fixed to the seat frame at the same time, so that the extension portion and the skin material can be easily fixed.

Further, in the above-described configuration, the extension portion may be sandwiched between the seat frame and the first engagement member in a state of being wound around an edge portion of the seat frame.

According to this, the extension portion is firmly fixed to the seat frame by engaging the first engagement member with the edge portion of the seat frame in a state where the extension portion is wound around the edge portion of the seat frame. Therefore, the seat pad can be further prevented from separating from the seat frame.

Further, in the above-described configuration, a second engagement member provided on the skin material and engageable with the seat frame is further provided, and the second engagement member is made of the skin material more than the first engagement member. The extending part may be covered with the skin material in a state where the second engaging member is attached to the seat frame and is disposed on the end side.

According to this, since the extension part is hidden by the skin material, the appearance of the vehicle seat can be improved.

In the above-described configuration, the seat pad may include a seat cushion pad, and the extension portion may be provided at a front portion of the seat cushion pad.

According to this, it can suppress that the front part of a seat cushion pad leaves | separates from a seat frame.

In the above-described configuration, the seat cushion pad is adjacent to the seat cushion pad of another vehicle seat in the left-right direction, and the extension portion is provided on the other vehicle seat side of the seat cushion pad. It may be.

According to this, it is possible to suppress the occurrence of a step between the upper surface of the seat cushion pad and the upper surface of the adjacent seat cushion pad.

Further, in the above-described configuration, the seat pad may include a seat back pad, and the extending portion may be provided on an upper portion of the seat back pad.

According to this, it is possible to suppress the upper part of the seat back pad from separating from the seat frame.

1 is a perspective view of a vehicle seat as a vehicle seat according to an embodiment. It is a side view of a vehicle seat. It is a side view which shows the state which accommodated the vehicle seat under the floor. It is a perspective view which shows a seat cushion pad and a seat cushion frame. It is the perspective view which looked at the seat cushion pad from the back side. It is II sectional drawing of FIG. FIG. 5 is a diagram (a) to (c) illustrating a method for manufacturing a seat cushion pad. It is a perspective view which shows a modification.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a vehicle seat S as an example of a vehicle seat constitutes a rear seat of the vehicle and is arranged side by side in the left-right direction. In the present specification, front and rear, left and right, and top and bottom are based on the passenger sitting on the vehicle seat S.

The vehicle seats S arranged in the left-right direction have different widths (lengths in the left-right direction), and in this embodiment, the width ratio is set to about 4: 6. Note that the width ratio can be arbitrarily set, and may be, for example, 5: 5.

Two vehicle seats S arranged in the left-right direction are each a seat cushion S1 on which an occupant sits, a seat back S2 that supports the occupant's back (from the back side), and a headrest S3 that supports the occupant's head. And have. Further, as shown in FIGS. 2 and 3, a recessed storage space T <b> 1 formed on the vehicle body floor T is provided behind each vehicle seat S. Each vehicle seat S is configured to be housed in the storage space T1.

The storage operation of the vehicle seat S will be briefly described. When the vehicle seat S is in a state before storage, that is, in a seatable state as shown in FIG. 2, the occupant pulls the operation strap St in FIG. The mechanism (not shown) is released. Accordingly, the occupant folds the seat back S2 forward and then moves the folded vehicle seat S rearward and obliquely downward, and as shown in FIG. 3, the vehicle seat S enters the storage space T1. Can be stored.

Such a vehicle seat S needs to reduce the thickness of the seat cushion S1 and the seat back S2 in order to be stored in the storage space T1 under the floor. In the present embodiment, as will be described in detail below, the seat cushion S1 is configured with a thickness smaller than the thickness of a general seat cushion. In the following description, the seat cushion S1 of the left vehicle seat S will be described in detail.

As shown in FIG. 4, the seat cushion S1 includes a seat cushion frame 10 as an example of a seat frame, a seat cushion pad 20 as an example of a seat pad, and a skin material 30 (see FIG. 6).

The seat cushion frame 10 is a member that supports the seat cushion pad 20 from below, and mainly includes a right side frame 11, a left side frame 12, and a front frame 13 that connects the front end portions of the side frames 11 and 12. And a rear frame 14 connecting the rear ends of the side frames 11 and 12. Each of the side frames 11 and 12 is formed in a U shape in sectional view that opens inward in the left-right direction.

Specifically, as shown in FIG. 6, the right side frame 11 includes an upper wall portion 11a, a side wall portion 11b extending downward from an end portion on the outer side in the left-right direction of the upper wall portion 11a, and a left and right portion from the lower end portion of the side wall portion 11b. And a lower wall portion 11c extending inward in the direction. As for the side wall part 11b, the substantially center part in the up-down direction is dented in the left-right direction inner side.

Returning to FIG. 4, the front frame 13 and the rear frame 14 are made of pipe material and are arranged at intervals in the front-rear direction. Three S springs 15 and two wire members 16 are provided between the front frame 13 and the rear frame 14.

The S spring 15 is an S spring extending in the front-rear direction while being bent a plurality of times in the left-right direction, and has a front end engaged with the front frame 13 and a rear end engaged with the rear frame 14. The wire member 16 is a rod-like member having rigidity higher than that of the S spring 15, and the front end portion is fixed to the front frame 13 by welding or the like, and the rear end portion is fixed to the rear frame 14 by welding or the like.

As shown in FIGS. 4 and 5, the seat cushion pad 20 includes a cushion material 21, a back cloth 22 provided integrally on the back surface of the cushion material 21, and an extending portion 23 provided integrally with the back cloth 22. Have. The cushion material 21 is made of urethane foam or the like, and is mainly formed between a seat cushion frame 10 and an occupant (that is, the front side of the seat cushion frame 10) and has a substantially rectangular base portion 21a in plan view and a base portion 21a. 4 side portions 21b extending downward from the front, rear, left and right (outside) ends.

As shown in FIG. 6, each side portion 21 b extends along the outer side surface of the seat cushion frame 10. The cushion material 21 has a shape that does not wrap around the back side (lower surface) of the seat cushion frame 10, with the lower end portion of the side portion 21b as a termination. Accordingly, for example, the thickness of the seat cushion S1 can be reduced as compared with a configuration in which the side portion of the seat cushion pad goes around the back side of the seat cushion frame.

Here, in FIG. 6, the relationship between the right side portion 21b and the right side frame 11 is shown. The lower end of the side portion 21 b is disposed at a position slightly below the lower surface of the lower wall portion 11 c of the right side frame 11. In the configuration in which the side portion 21b protrudes below the lower surface of the lower wall portion 11c of the right side frame 11, the distance from the lower end of the side portion 21b to the lower surface of the lower wall portion 11c is desirably 10 mm or less, preferably 5 mm or less is desirable, more preferably 0 mm.

In the present embodiment, the side portion 21b protrudes downward from the lower surface of the lower wall portion 11c of the right side frame 11, but the present invention is not limited to this, and the lower surface and the lower wall portion of the side portion 21b. The lower surface of 11c may be substantially flush, or the lower surface of the side portion 21b may be disposed above the lower wall portion 11c.

The back fabric 22 is made of a nonwoven fabric or the like, and is provided integrally with the cushion material 21 over the lower surface of the base portion 21a of the cushion material 21 and the inner surface and the lower surface of each side portion 21b.

As shown in FIG. 4, the extending part 23 is a member different from the skin material 30 made of a rectangular nonwoven fabric or the like, and is provided on the right side in the front part of the seat cushion pad 20. Here, since the seat cushion pad 20 constitutes the left vehicle seat S, the right side of the seat cushion pad 20 has a seat cushion pad of the right vehicle seat S as shown in FIG. 20R is adjacently arranged. Therefore, in other words, the extending portion 23 is disposed on the seat cushion pad 20R (see FIG. 6) side of the right vehicle seat S in the seat cushion pad 20.

As shown in FIG. 5, the extending portion 23 extends from the cushion material 21 of the seat cushion pad 20 so that one end in the longitudinal direction is fixed to the backing cloth 22 by stitching and the other end is free. Yes. Specifically, the extending portion 23 is fixed to a portion of the backing cloth 22 that is disposed on the inner surface of the right side portion 21b of the cushion material 21, and is extended to the outer side in the left-right direction of the side portion 21b. The length extends outward from the outer surface B1 (outer surface) of the portion 21b (see the two-dot chain line in FIG. 5).

As shown in FIG. 6, the skin material 30 is made of synthetic leather, fabric, or the like, and is covered on the seat cushion pad 20 from above. A first engagement member 31 and a second engagement member 32 as an example of a fixing member are provided on the back surface of the skin material 30.

The first engagement member 31 is a J-shaped member for fixing the skin material 30 to the right side frame 11, is provided at a position away from the end of the skin material 30, and is below the right side frame 11. The wall portion 11c can be engaged with the inner edge in the left-right direction. Specifically, the first engaging member 31 is engaged with the edge of the lower wall portion 11c in a state where the extending portion 23 is wound around the edge of the lower wall portion 11c. Thereby, the extension part 23 is clamped between the lower wall part 11 c and the first engagement member 31 and is fixed to the right side frame 11.

The second engagement member 32 is a member having a J shape in a sectional view, is provided at an end portion of the skin material 30, and can be engaged with the wire member 16 of the seat cushion frame 10. In the state where the second engagement member 32 is attached to the wire member 16, the extending portion 23 is covered with the skin material 30.

Next, a method for assembling the seat cushion pad 20 to the seat cushion frame 10 will be described.
As shown in FIG. 4, first, the seat cushion pad 20 is attached to the seat cushion frame 10 so as to be fitted from above. Thereafter, as shown in FIG. 6, the skin material 30 is covered from above the seat cushion pad 20, and an end portion other than the right end portion (the end portion provided with the second engagement member 32) of the skin material 30 is appropriately attached. The seat cushion frame 10 is engaged with an engagement member (not shown).

Thereafter, the extended portion 23 is pulled and wound around the edge of the lower wall portion 11c of the right side frame 11 while being kept in tension. Next, the first engagement member 31 is engaged with the lower wall portion 11 c of the right side frame 11 while pulling the right end portion of the skin material 30 to apply tension. Thereby, the extension part 23 is fixed to the right side frame 11 together with the right end part of the skin material 30. Thereafter, the extension member 23 and the like are covered with the skin material 30 by engaging the second engagement member 32 with the wire member 16.

Next, a method for manufacturing the seat cushion pad 20 will be described.
As shown in FIG. 7A, first, the extending portion 23 is fixed to the backing cloth 22 by stitching. Thereafter, as shown in FIG. 7B, the backing cloth 22 is set on the molding surface of the first mold M1 for molding the seat cushion pad 20. At this time, the extending portion 23 is disposed so as to be folded between the backing cloth 22 and the molding surface of the first mold M1.

Next, as shown in FIG. 7 (c), after setting the second mold M2 with respect to the first mold M1, the material of the cushion material 21 is injected into the molds M1 and M2 and hardened. The cushion material 21 and the backing cloth 22 are joined together. At this time, since the material does not flow into the extending portion 23 disposed between the backing cloth 22 and the first mold M1, when the completed seat cushion pad 20 is removed from the molds M1 and M2, the extending portion The end portion of the non-sewn portion 23 is in a free state that can be separated from the backing fabric 22.

In the vehicle seat of the present embodiment as described above, the following effects can be obtained.
Since the extending portion 23 provided integrally with the cushion material 21 is fixed to the right side frame 11, the seat cushion pad 20 is firmly fixed to the right side frame 11, and the vehicle seat S can be stored under the floor or under the floor. It is possible to suppress the seat cushion pad 20 from being displaced from the right side frame 11 and being lifted by an impact caused by

Since the thickness of the seat cushion pad 20 can be reduced by forming the seat cushion pad 20 so as not to go around the back side of the seat cushion frame 10, the vehicle seat S can be reduced in size, and the vehicle The sheet S can be satisfactorily stored under the floor without protruding from the floor surface.

By providing the extended portion 23 integrally with the backing cloth 22, the extended portion 23 is disposed near the right side frame 11, so that the extended portion 23 is closely attached to the right side frame 11 and firmly fixed. Can do.

By extending the extending portion 23 to a certain extent so as to extend outward from the outer surface of the side portion 21b when deployed toward the outside of the side portion 21b of the cushion material 21, the extending portion 23 is formed. The operation of attaching to the right side frame 11 can be easily performed while pulling.

When the extending portion 23 is fixed to the right side frame 11 by the first engaging member 31 by providing the first engaging member 31 for fixing the extending portion 23 to the right side frame 11 on the skin material 30, the skin Since the material 30 is also fixed to the right side frame 11 at the same time, the extension work 23 and the skin material 30 can be fixed easily.

By engaging the first engagement member 31 with the edge of the lower wall portion 11c in a state where the extension portion 23 is wound around the edge of the lower wall portion 11c of the right side frame 11, the extension portion 23 is moved to the right side. Since the seat cushion pad 20 can be firmly fixed to the side frame 11, it is possible to further suppress the seat cushion pad 20 from floating from the right side frame 11.

In the state where the second engagement member 32 is attached to the right side frame 11, the extension portion 23 is covered with the skin material 30, so that the occupant cannot visually recognize the extension portion 23 from the outside, and the vehicle seat S Can improve the aesthetics.

Since the extending portion 23 is provided in the front portion (front portion) of the seat cushion pad 20, it is possible to suppress the front portion of the seat cushion pad 20 from floating from the seat cushion frame 10.

Since the extending portion 23 is provided on the right side of the seat cushion pad 20, it is possible to suppress the occurrence of a step between the upper surface of the seat cushion pad 20 and the upper surface of the right seat cushion pad 20R.

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 embodiment, the fixing member for fixing the extending portion 23 to the right side frame 11 is the first engaging member 31 for fixing the skin material 30 to the right side frame 11. It is not limited to this, The other engaging member which is not provided in the skin material 30 may be sufficient. Further, the fixing member may not be an engagement member having a J-shape in cross section as in the above embodiment, and may be, for example, a bolt and a nut.

In the said embodiment, although the 2nd engagement member 32 was provided in the edge part of the skin material 30, this invention is not limited to this, A 2nd engagement member is an edge of skin material rather than a 1st engagement member. If it is a part side, you may be provided in the position away from the edge part of a skin material.

In the above embodiment, the present invention is applied to the left vehicle seat S, but the present invention is not limited to this. Alternatively, or in addition, the present invention may be applied to the right vehicle seat S, for example. In this case, the extending portion provided integrally with the right seat cushion pad 20R may be provided on the left side (next vehicle seat S side) in the front portion of the seat cushion pad 20R.

Alternatively or additionally, the extension part 43 may be provided in the seat back pad 40 as shown in FIG. Specifically, the seat back pad 40 shown in FIG. 8 is a pad of the vehicle seat S on the left side, and includes a cushion material 41 made of urethane foam or the like, and a backing cloth 42 provided on the back surface of the cushion material 41. Yes. The extending portion 43 is provided on the right side (the adjacent vehicle seat S side) in the upper portion of the seat back pad 40 and is integrally formed with the backing cloth 42.

In this modification, the extending portion 43 is a part of the backing cloth 42. Therefore, when the seat back pad 40 is manufactured, the step of sewing the extending portion 23 to the backing cloth 22 that is required in the above embodiment is not required by preparing the backing cloth 42 having the extending portion 43. It is.

As shown in FIG. 8, a seat back frame 50 as an example of a seat frame that supports the seat back pad 40 includes a substantially rectangular frame-shaped pipe frame 53, a right side frame 51, a left side frame 52, and a pan frame. These are joined together by welding. Although the detailed illustration and description of the other configurations of the seat back frame 50 are omitted here, for example, US Patent Application Publication No. 2015/0329019 (A1) (the contents of this document are described in this specification). Which is incorporated by reference in its entirety as part of it.

The extending portion 43 of the seat back pad 40 is formed on the seat back frame 50 in the same manner as in the above embodiment (that is, with some fixing member in a state of being wound around the edge portion of the right side frame 51). Fixed. Then, an unillustrated skin material covering the extending portion 43 is locked to a wire member 56 fixed to the pan frame 55 by welding.

According to this embodiment, since the extending portion 43 is provided on the upper portion of the seat back pad 40, it is possible to suppress the upper portion of the seat back pad 40 from being separated from the seat back frame. Further, since the extending portion 43 is provided on the right side (the adjacent vehicle seat S side), the front surface of the seat back pad 40 and the front surface of the seat back pad (not shown) of the adjacent vehicle seat S. It can suppress that a level | step difference arises between them. Furthermore, since the sewing operation of the extending portion 43 is not required when manufacturing the seat back pad 40, the manufacturing cost of the seat back pad 40 can be reduced. *

In the above embodiment, the seat cushion pad may be integrally formed with the extended portion as a part of the backing cloth, as in the modified example of FIG. 8, or the extended portion of the modified example may be seated by sewing. It can also be provided integrally with the backing cloth of the back pad.

In the above embodiment and the modification of FIG. 8, the extending

portions

23 and 43 are provided integrally with the backing

cloths

22 and 42. However, the present invention is not limited to this, and for example, a sheet-like extending piece different from the backing cloth. The protruding portion may be provided integrally with the cushion material.

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.

Claims

A seat pad having a cushion material and a sheet-like extending portion provided integrally with the cushion material and extending from the cushion material;
A seat frame that supports the seat pad;
A skin covering the seat pad;
A vehicle seat, comprising: a fixing member that fixes the extension portion to the seat frame.
The cushion material includes a base portion disposed on a front side of the seat frame, and a side portion extending along a side surface of the seat frame from an outer end portion of the base portion, and the cushion material includes: The vehicle seat according to claim 1, wherein an end portion of the side portion is a terminal end and does not go around to the back side of the seat frame.
The seat pad further includes a backing cloth integrally provided on the back surface of the cushion material,
The vehicle seat according to claim 2, wherein the extending portion is provided integrally with the backing cloth.
4. The vehicle seat according to claim 3, wherein the extending portion is a part of the backing cloth.
3. The vehicle seat according to claim 2, wherein the extending portion extends outward from the outer surface of the side portion when deployed toward the outside of the side portion.
The fixing member includes a first engagement member provided on the skin material and engageable with the seat frame;
The vehicle seat according to any one of claims 1 to 5, wherein the extension portion is sandwiched between the seat frame and the first engagement member.
The vehicle according to claim 6, wherein the extending portion is sandwiched between the seat frame and the first engagement member in a state of being wound around an edge portion of the seat frame. Sheet.
A second engagement member provided on the skin material and engageable with the seat frame;
The second engagement member is disposed closer to the end portion of the skin material than the first engagement member, and the extension portion is connected to the skin in a state where the second engagement member is attached to the seat frame. The vehicle seat according to claim 6, wherein the vehicle seat is covered with a material.
The seat pad includes a seat cushion pad,
The vehicle seat according to claim 1, wherein the extending portion is provided at a front portion of the seat cushion pad.
The seat cushion pad is adjacent to the seat cushion pad of another vehicle seat in the left-right direction,
The vehicle seat according to claim 9, wherein the extension portion is provided on the other vehicle seat side of the seat cushion pad.
The seat pad includes a seat back pad,
The vehicle seat according to claim 1, wherein the extending portion is provided on an upper portion of the seat back pad.