Trim cover and vehicle seat

Abstract

To improve molding flexibility of a trim cover back surface part forming a back surface of a seat back.SOLUTION: A trim cover 40 includes: a cover body 42 to be attached to a pad 30 of a seat back 14 of a vehicle seat 10; and an inner pocket 46 which is disposed at the inner side of the cover body 42, attached to a back surface part 42A forming a back surface of the seat back 14 in the cover body 42, and houses a molding foam 52 between itself and the back surface part 42A.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a seat back trim cover. [Background technology]

[0002] In the vehicle seat disclosed in Patent Document 1 below, the lower edge surrounding portion (hanging portion) of the back pad is shaped to extend from the lower edge of the back pad in a wrapping manner toward the upper rear side. The hanging portion is set in a shape that covers the lower plate of the back frame from the bottom and rear side. Then, a back cover (trim cover) is placed on this back pad. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-49964 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned prior art, the rear portion of the trim cover that forms the back of the seat back is not supported from the front side of the seat by a back pad or the like, so the rear portion may not assume the intended shape.

[0005] An object of the present invention is to provide a trim cover that can improve the degree of freedom in designing the rear surface portion that forms the rear surface of the seatback, and a vehicle seat that includes the trim cover. [Means for solving the problem]

[0006] The trim cover of the first embodiment comprises a cover body that is placed over the pad of the seat back of a vehicle seat, and an inner pocket that is arranged inside the cover body and attached to a back portion of the cover body that forms the back of the seat back, and in which foam is housed between the cover body and the back portion.

[0007] According to the first aspect, an inner pocket is disposed inside a cover body that is placed over a pad of a seat back of a vehicle seat. The inner pocket is attached to a back portion that forms the back surface of the seat back. A foam is accommodated between the inner pocket and the back portion (i.e., inside the inner pocket). This foam improves the degree of freedom in shaping the back portion.

[0008] The trim cover of the second aspect is the same as that of the first aspect, except that a lower frame portion of the frame of the seat back is disposed in front of the inner pocket.

[0009] According to the second aspect, a lower frame portion of the seat back frame is disposed in front of the seat within an inner pocket provided inside the rear surface of the trim cover, whereby the foam contained in the inner pocket is supported from the front side of the seat by the lower frame portion, thereby stabilizing the shape of the rear surface of the trim cover.

[0010] The trim cover of the third aspect is the trim cover of the first or second aspect, wherein a hole is formed in the lower end of the inner pocket.

[0011] According to the third aspect, a hole is formed at the lower end of the inner pocket provided on the inside of the back portion of the trim cover, so that when manufacturing a vehicle seat, an operator can visually confirm that the foam has been inserted up to the lower end of the inner pocket.

[0012] The trim cover of the fourth aspect is any one of the first to third aspects, and has a locking portion provided on the back portion above the seat of the inner pocket, and which is locked to an insert wire embedded in the pad using a locking device.

[0013] According to a fourth aspect, a locking portion provided on the back surface of the trim cover above the seat of the inner pocket of the trim cover is locked to an insert wire embedded in the pad using a locking device, thereby preventing or suppressing the foam contained in the inner pocket from accidentally shifting above the seat.

[0014] A vehicle seat of the fifth aspect includes a seat cushion on which an occupant sits, and a seat back in which a trim cover of any one of the first to fourth aspects is placed over a pad, supporting the back of the occupant.

[0015] According to the fifth aspect, the back of an occupant seated on a seat cushion is supported by the seat back. The trim cover placed on the pad of the seat back is one of the first to fourth aspects, so that the above-mentioned effects can be obtained. [Effects of the Invention]

[0016] As described above, according to the present invention, it is possible to improve the degree of freedom in designing the back surface portion that forms the back surface of the seat back. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a side view showing a vehicle seat according to an embodiment; [Figure 2] 1 is a vertical cross-sectional view showing a portion of a seat back of a vehicle seat according to an embodiment of the present invention; [Figure 3] FIG. 3 is a cross-sectional view showing a cut surface taken along line F3-F3 in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0018] A vehicle seat 10 according to one embodiment of the present invention will be described below with reference to Figs. 1 to 3. Note that in each drawing, some reference numerals may be omitted to make the drawings easier to see. Arrows FR, LH, and UP, which are appropriately shown in each drawing, respectively indicate the front, left, and top of the vehicle seat 10. In the following description, when simply using the front-rear, left-right, top-bottom directions,

[0019] As shown in Fig. 1, a vehicle seat 10 according to this embodiment includes a seat cushion 12 on which an occupant sits, a seat back 14 that supports the occupant's back, and a headrest 16 that supports the occupant's head. The seat cushion 12 is attached to a floor F of the vehicle via slide rails 18. The seat back 14 is connected to the seat cushion 12 via a reclining mechanism 20. The headrest 16 is attached to the upper end of the seat back 14 so that its vertical position can be adjusted.

[0020] 2 and 3, the seat back 14 has a frame 22 which is a skeleton member, a pad 30 which is a cushioning material attached to the frame 22, a trim cover 40 which is a skin material covering the pad 30, and a shaping foam 52 attached to the trim cover. The shaping foam 52 corresponds to the "foam" in this invention.

[0021] The frame 22 has left and right side frame portions 24 (the right side frame portion 24 is not shown) that extend in the vertical direction of the seat back 14 on the left and right sides of the seat back 14, an upper frame portion (not shown) that connects the upper ends of the left and right side frame portions 24 in the horizontal direction, and a lower frame portion 26 that connects the lower parts of the left and right side frame portions 24 in the horizontal direction.

[0022] The left and right side frame portions 24 and the lower frame portion 26 are made of, for example, press-formed metal plate material, and the upper frame portion is made of, for example, metal pipe material. A spring mat (not shown) is suspended between the vertically middle portions of the left and right side frame portions 24. In addition, a reclining rod 28 is suspended between the lower ends of the left and right side frame portions 24. This reclining rod 28 constitutes part of the reclining mechanism 20.

[0023] The pad 30 is made of a foam such as molded urethane foam, and integrally comprises a main portion 30A that supports the occupant's back from behind, and left and right side support portions 30B that support the occupant's back from the outside in the left and right direction. The main portion 30A is elastically supported from behind by the above-mentioned spring mat.

[0024] 2, a hanging portion 32 is provided at the lower end of main portion 30A, and is wrapped around reclining rod 28 from the front and bottom. Hanging portion 32 extends rearward beyond reclining rod 28, and its rear end is located below lower frame portion 26.

[0025] 3, the left and right side support parts 30B protrude further forward than the main part 30A and form a substantially U-shape (or substantially C-shape) that opens toward the center in the left-right direction when viewed from the top and bottom. The left and right side frame parts 24 are arranged inside the left and right side support parts 30B.

[0026] The trim cover 40 has a cover main body 42 that covers the pad 30, a back pocket 44 that is arranged on the outside of the cover main body 42 and attached to a portion 42A (hereinafter referred to as the "back portion 42A") of the cover main body 42 that forms the back surface of the seat back 14, an inner pocket 46 that is arranged on the inside of the cover main body 42 and attached to the back portion 42A, and a hanging bag 54 that is provided on the back portion 42A above the inner pocket 46. The hanging bag 54 corresponds to the "locking portion" in this invention.

[0027] The cover body 42 is formed into a bag shape by sewing together multiple skin pieces made of, for example, cloth, leather, or synthetic leather, and is placed from above over the seat back 14. An opening (not shown) provided at the lower end of the cover body 42 is closed using a fastener (not shown).

[0028] The back pocket 44 is made of the same material as the cover piece constituting the cover body 42, and is overlapped from the rear side with the lower part of the back portion 42A. The back pocket 44 is rectangular when viewed from the front to back direction, and both left and right edges and the bottom edge are sewn to the back portion 42A. The top edge of the back pocket 44 is not sewn to the back portion 42A, allowing small items to be stored between the back pocket 44 and the back portion 42A.

[0029] The inner pocket 46 is made of, for example, a cloth material, and is overlapped from the front side with the lower part of the back portion 42A. This inner pocket 46 has a rectangular shape when viewed from the front-to-rear direction, and both left and right edges and a lower edge are sewn to the back portion 42A. This sewn portion is covered from the rear side by the back pocket 44, so that it cannot be seen from outside the seat back 14. The upper edge of the inner pocket 46 is not sewn to the back portion 42A, and an insertion opening 48 for inserting the shaping foam 52 is formed between the inner pocket 46 and the back portion 42A. This insertion opening 48 is located below the upper edge of the back pocket 44.

[0030] The shaping foam 52 is made of a foam such as slab urethane and is formed into a rectangular plate. The shaping foam 52 is housed between the inner pocket 46 and the back surface 42A with its thickness oriented in the approximately front-to-rear direction. The vertical dimension of the shaping foam 52 is set to be slightly shorter than the vertical dimension of the inner pocket 46. A hole (window) 50 is formed in the lower end of the inner pocket 46, allowing visual confirmation of whether the shaping foam 52 has been inserted all the way to the bottom of the inner pocket 46.

[0031] The lower frame portion 26 of the frame 22 of the seat back 14 is disposed in front of the lower portion of the inner pocket 46. The lower frame portion 26 contacts the lower portion of the inner pocket 46 from the front side. As a result, the shaping foam 52 contained in the inner pocket 46 is supported by the lower frame portion 26 from the front side.

[0032] The hanging bag 54 is disposed inside the cover main body 42 near the upper side of the inner pocket 46. The hanging bag 54 is made of, for example, a long cloth material and is disposed near the vertical center of the seat back 14 with the left-right direction as its longitudinal direction. The hanging bag 54 is folded in half widthwise, and the end opposite the fold is sewn to the vertical center of the back surface portion 42A. This sewn portion is covered from the rear side by the back pocket 44, so that it cannot be seen from outside the seat back 14. A hanging wire 56 is housed inside the hanging bag 54. The hanging wire 56 is made of, for example, a metal wire and is disposed with the left-right direction as its longitudinal direction.

[0033] An insert wire 58 is provided on the back side of the pad 30 of the seat back 14 in correspondence with the suspension wire 56. The insert wire 58 is made of, for example, a metal wire and is arranged with its longitudinal direction in the left-right direction. This insert wire 58 is embedded in the pad 30 by, for example, integral foam molding with the pad 30. The suspension wire 56 is fastened to this insert wire 58 using a hog ring 60, which is an example of a fastening device.

[0034] As a result of the above-described engagement, the vertical center of the back portion 42A is suspended from the pad 30 via the suspension bag 54, and the vertical center of the back portion 42A is recessed forward. This suspension causes the inner pocket 46 and the upper portion of the shaping foam 52 to bend forward. In Fig. 2, the shaping foam 52 in its natural state before the back portion 42A is suspended is shown by a two-dot chain line.

[0035] In the vehicle seat 10 configured as described above, the back of an occupant seated on the seat cushion 12 is supported by the seat back 14. The trim cover 40 of the seat back 14 includes a cover main body 42 that covers the pad 30 of the seat back 14, and an inner pocket 46 that is disposed inside the cover main body 42 and attached to the back portion 42A of the cover main body 42. A shaping foam 52 is accommodated between the inner pocket 46 and the back portion 42A (i.e., inside the inner pocket 46). The shaping foam 52 increases the number of ways to shape the back portion 42A, thereby improving the degree of freedom in shaping the back portion 42A.

[0036] If the trim cover 40 does not have an inner pocket 46, it is also possible to attach the shaping foam 52 to the rear end of the hanging portion 32 of the pad 30 using double-sided adhesive tape or the like. However, because the pad 30 must be attached to the frame 22 of the seat back 14 before the shaping foam 52 is attached to the hanging portion 32, manufacturing costs increase and the risk of quality issues such as peeling off of the attached portion increases. In this regard, in the present embodiment, the shaping foam 52 can be inserted into the inner pocket 46 of the trim cover 40 to form a sub-assembly before manufacturing the vehicle seat 10, which suppresses increases in manufacturing costs and eliminates the risk of quality issues such as peeling off of the attached portion.

[0037] In this embodiment, the lower frame portion 26 of the seat back 14 is disposed in front of the inner pocket 46. This allows the shaping foam 52 contained in the inner pocket 46 to be supported by the lower frame portion 26, thereby stabilizing the shape of the back surface portion 42A of the trim cover 40.

[0038] Furthermore, in this embodiment, since the hole 50 is formed at the lower end of the inner pocket 46, during the manufacturing of the vehicle seat 10, an operator can visually confirm that the shaping foam 52 has been inserted all the way to the lower end of the inner pocket 46. As a result, this contributes to preventing manufacturing defects in which the shaping foam 52 is not inserted all the way to the lower end of the inner pocket 46.

[0039] Furthermore, in this embodiment, a hanging bag 54 provided on the back surface 42A of the trim cover 40 above the inner pocket 46 is fastened to an insert wire 58 embedded in the pad 30 using a hog ring 60. This prevents or suppresses the molding foam 52 contained in the inner pocket 46 from accidentally shifting upward.

[0040] In the above embodiment, the hanging bag 54 serving as the locking portion is provided on the rear surface 42A of the trim cover 40, but the present invention is not limited to this, and the locking portion may be omitted.

[0041] Furthermore, in the above embodiment, the hole 50 is formed at the lower end of the inner pocket 46, but this is not limiting, and the hole 50 may not be formed.

[0042] In addition, in the above embodiment, the lower frame portion 26 is disposed in front of the inner pocket 46, and the inner pocket 46 is supported by the lower frame portion 26. However, the present invention is not limited to this. For example, a gap may be formed between the inner pocket 46 and the lower frame portion 26, or the lower frame portion 26 may not be disposed in front of the inner pocket 46.

[0043] In addition, the present invention can be implemented with various modifications within the scope of the gist thereof. Furthermore, it goes without saying that the scope of the rights of the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0044] 10 Vehicle seats 12 seat cushions 14 Seat back 22 frames 26 Lower frame part 30 pads 40 Trim cover 42 Cover body 42A Rear part 46 inner pocket 50 holes 52 Modeling foam 54 Hanging bag (locking part) 58 Insert Wire 60 Hog ring (fastening device)

Claims

1. a cover body that is placed over a pad of a seat back of a vehicle seat; an inner pocket that is disposed inside the cover body, that is attached to a back surface portion of the cover body that forms the back surface of the seat back, and that accommodates a foam between the cover body and the back surface portion; Trim cover with.

2. 2. The trim cover according to claim 1, wherein a lower frame portion of a frame of the seat back is disposed in front of the inner pocket.

3. 3. The trim cover according to claim 1, wherein a hole is formed in a lower end of the inner pocket.

4. 3. The trim cover according to claim 1, further comprising a locking portion provided on the back surface of the seat above the inner pocket, the locking portion being locked to an insert wire embedded in the pad using a locking device.

5. A seat cushion on which an occupant sits; a seat back in which the trim cover according to claim 1 or 2 is placed on a pad and supports the back of the occupant; A vehicle seat comprising:

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