JP5488235B2 - Vehicle seat back - Google Patents

Description

  The present invention relates to a vehicle seat back that can be folded at an intermediate portion in the vertical direction.

  A conventional vehicle seat back includes a frame that can be folded at an intermediate portion in the vertical direction, a pad that is attached to the frame, and a skin that covers the surface of the pad. The epidermis has a main epidermis that covers the surface of the center portion of the pad in the sheet width direction, and a side epidermis that covers the surfaces of both side portions of the pad. The side skin is not bonded to the pad in the region corresponding to the intermediate portion, and is bonded to the pad in the upper region and the lower region of the intermediate portion. Therefore, the side skin wrinkles that may occur when the frame is folded are concentrated on the non-bonded portion and hardly occur on other portions.

JP 2007-282800 A

  However, the work of attaching the epidermis to the pad is complicated because it is necessary to align the non-adhesive part of the side epidermis with the folded part and adhere the adhesive part of the side epidermis to the pad. Therefore, there is a conventional need for a vehicle seat back having another structure that can locally concentrate wrinkles that may occur on the skin.

  In order to solve the above-described problems, the present invention is a vehicle seat back having a configuration as described in each claim. According to one feature, the seat back of the present invention includes a frame that can be folded at an intermediate portion in the vertical direction, a pad that is attached to the frame, and an outer skin that covers the surface of the pad. The upper skin covers the pad surface above the middle part, the lower skin covers the pad surface below the middle part, and connects the upper and lower skins and covers the pad surface. Has an intermediate epidermis. An upper bead member extending along the upper edge of the intermediate skin is provided between the upper skin and the intermediate skin, and extending along the lower edge of the intermediate skin between the lower skin and the intermediate skin. A lower ball edge member is provided. The upper edge member and the lower edge member have a core formed of a material harder than the skin. The middle epidermis is formed from a material that is less rigid than the upper and lower epidermis.

  Therefore, when the frame is folded, the seat back is folded, and wrinkles are generated in the intermediate skin located between the upper and lower skins. On the upper side and the lower side of the intermediate skin, there are provided an upper edge member and a lower edge member having a core formed of a material harder than the skin. Therefore, the wrinkles are surely formed on the intermediate skin surrounded by the upper and lower edge members, thereby reducing the formation of the wrinkles on the upper skin or the lower skin beyond the edge members. Thus, the design of the entire seat back is improved. The middle epidermis is formed from a material that is less rigid than the upper and lower epidermis. As a result, wrinkles are likely to occur in the intermediate skin, and wrinkles are likely to concentrate on the intermediate skin. Thus, the design of the entire seat back is improved.

It is a perspective view of a vehicle seat. It is a partial cross section figure of a pad and an outer skin. It is a partial cross section figure of the pad concerning other forms, and an outer skin. It is a partial cross section figure of the pad concerning other forms, and an outer skin.

  One embodiment of the present invention will be described with reference to FIGS. The vehicle seat 10 is a vehicle seat that is mounted on the floor surface of a vehicle such as an automobile, and includes a seat back 1 and a seat cushion 11 as shown in FIG. The seat back 1 and the seat cushion 11 have frames 2, 11a, pads 3, 11b attached to the frames 2, 11a, and skins 4, 11c covering the surfaces of the pads 3, 11b.

  As shown in FIG. 1, the frame 2 of the seat back 1 includes an upper frame 2a, a lower frame 2b, and a middle folding mechanism 2c. The lower side portion of the lower frame 2b is attached to the frame 11a of the seat cushion 11 by the reclining device 12 so that the angle can be adjusted. The upper frame 2a is attached to the upper part of the lower frame 2b so as to be tiltable by a middle folding mechanism 2c. The upper frame 2a can be tilted between a normal position located substantially in the same plane as the lower frame 2b and a middle folding position where the upper end of the upper frame 2a is located forward of the plane. The folding mechanism 2c also includes a lock mechanism that locks the upper frame 2a with respect to the lower frame 2b at a desired angle.

  The pads 3 and 11b are formed from an elastic member such as urethane foam resin. The pad 3 of the seat back 1 includes an upper region portion 3a attached to the front side of the upper frame 2a, a lower region portion 3b attached to the front side of the lower frame 2b, and an intermediate region attached to the front side of the middle folding mechanism 2c. It has the part 3c integrally. A groove 3d extending in the horizontal direction is formed on the front surface of the intermediate region 3c. Therefore, when the frame 2 is folded, the pad 3 is bent around the groove 3d. In the left and right portions of the lower region portion 3b, raised portions 3e raised forward are formed to hold the user's side portions.

  As shown in FIG. 1, the skin 4 is formed from leather, synthetic leather, or the like. The epidermis 4 is formed by sewing a plurality of epidermis pieces such as the upper epidermis 4a, the lower epidermis 4b, the intermediate epidermis 4c, the central epidermis 4d, the central lower epidermis 4e, the side upper epidermis 4f, and the side lower epidermis 4g.

  The upper skin 4a covers the surface of the upper region 3a of the pad 3 as shown in FIG. The lower skin 4b covers the surface of the raised portion 3e located on the lower left and right portions of the pad 3. The intermediate skin 4 c is provided between the upper skin 4 a and the lower skin 4 b to connect them, and covers the surface of the side portion of the intermediate region 3 c of the pad 3. The intermediate skin 4c is formed of a material having lower rigidity than the upper skin 4a and the lower skin 4b. The central skin 4 d covers the center surface of the lower region 3 b of the pad 3. The left and right edges of the central epidermis 4d are sewn to the lower epidermis 4b and the middle epidermis 4c, and the upper edge of the central epidermis 4d is sewn to the lower edge of the upper epidermis 4a.

  The lower center skin 4e covers the lower center surface of the lower region 3b of the pad 3 as shown in FIG. The left and right edges of the central lower epidermis 4e are sewn to the lower epidermis 4b, and the upper edge of the central lower epidermis 4e is sewn to the lower edge of the central epidermis 4d. The side upper skin 4f is sewn to the side edge of the upper skin 4a to cover the side surface of the upper region 3a of the pad 3. The side lower skin 4g is sewn to the side edge of the lower skin 4b to cover the side surface of the lower region 3b of the pad 3.

  As shown in FIG. 2, an upper bead member 5a is provided between the upper skin 4a and the intermediate skin 4c. The upper edge member 5a extends along the upper edge of the intermediate skin 4c and has substantially the same length as the intermediate skin 4c. The upper edge member 5a includes a core material 5a1 and an upper cylinder member 5a2. A lower edge member 5b is provided between the lower skin 4b and the intermediate skin 4c.

  The lower ball edge member 5b extends along the lower edge of the intermediate skin 4c as shown in FIG. 2, and has substantially the same length as the intermediate skin 4c. The lower ball edge member 5b includes a core material 5b1 and a lower cylinder member 5b2. The core materials 5a1 and 5b1 are formed of a material harder than the skin 4, such as a resin material. The core members 5a1 and 5b1 are long and linear, and are provided over the entire length of the bead members 5a and 5b.

  As shown in FIG. 2, the upper cylinder member 5 a 2 and the lower cylinder member 5 b 2 are formed of leather, synthetic leather, or the like, similar to the skin 4. Both ends of the upper cylinder member 5a2 are overlapped and stitched together with the lower end portion of the upper skin 4a by the stitching portion 7a. Thereby, the upper cylinder member 5a2 is formed in a cylindrical shape, and the core material 5a1 is inserted into the upper cylinder member 5a2. The upper cylinder member 5a2 and the upper skin 4a are stitched to the upper end portion of the intermediate skin 4c by the stitching portion 7b on the tip side of the stitching portion 7a.

  As shown in FIG. 2, both ends of the lower cylinder member 5b2 are overlapped and stitched together with the upper end portion of the lower epidermis 4b by the stitching portion 7c. Thereby, the lower cylinder member 5b2 is formed in a cylindrical shape, and the core material 5b1 is inserted into the lower cylinder member 5b2. The lower cylinder member 5b2 and the lower skin 4b are stitched to the lower end portion of the intermediate skin 4c by the stitching portion 7d on the tip side of the stitching portion 7c. Thereby, the upper ball edge member 5a and the lower ball edge member 5b are formed on the front side of the outer skin 4, and the decorativeness of the outer skin 4 can be improved.

  As shown in FIG. 1, a shield member 6 is attached to the side surface of the seat back 1. The shield member 6 is made of resin and includes an upper member 6a that covers the side surface of the side upper skin 4f and a lower member 6b that covers the side surface of the side lower skin 4g.

  As shown in FIG. 1, the seat back 1 can be folded at an intermediate portion in the vertical direction by a middle folding mechanism 2 c of the frame 2. The seat back 1 is deformed between a normal state indicated by an imaginary line and a middle bent state indicated by a solid line by the middle folding mechanism 2c. The pad 3 has a shape corresponding to the shape of the seat back 1 in a normal state, and is positioned on the front side of the middle folding mechanism 2c. Therefore, when the seat back 1 is in a folded state, the pad 3 is compressed and elastically deformed around the intermediate region 3c.

  The skin 4 has a shape corresponding to the shape of the seat back 1 in the normal state, and is located on the front side of the middle folding mechanism 2c. Therefore, when the seat back 1 is in the middle folded state, the outer skin 4 is slackened, and in particular, the middle skin 4c is located in the side portion of the seat back 1 and in the vicinity of the middle folding mechanism 2c.

  As shown in FIG. 2, an upper edge member 5a and a lower edge member 5b are provided on the upper and lower edges of the intermediate skin 4c. Therefore, the slack produced in the middle epidermis 4c does not spread beyond the middle epidermis 4c to the upper epidermis 4a or the lower epidermis 4b. As a result, wrinkles that may occur due to the slack of the epidermis 4 are concentrated on the intermediate epidermis 4c and are difficult to spread to other areas.

  As described above, as shown in FIGS. 1 and 2, the seat back 1 includes the frame 2 that can be folded at the middle in the vertical direction, the pad 3 that is attached to the frame 2, and the skin 4 that covers the surface of the pad 3. Have. The epidermis 4 connects the upper epidermis 4a covering the surface of the pad 3 above the middle part, the lower epidermis 4b covering the surface of the pad 3 below the middle part, and the upper epidermis 4a and the lower epidermis 4b. And an intermediate skin 4 c that covers the surface of the pad 3. An upper bead member 5a extending along the upper edge of the intermediate skin 4c is provided between the upper skin 4a and the intermediate skin 4c, and below the intermediate skin 4c between the lower skin 4b and the intermediate skin 4c. A lower ball edge member 5b extending along the edge is provided. The upper ball edge member 5 a and the lower ball edge member 5 b have core materials 5 a 1 and 5 b 1 formed from a material harder than the skin 4. The intermediate skin 4c is formed of a material having lower rigidity than the upper skin 4a and the lower skin 4b.

  Therefore, when the frame 2 is folded, the seat back 1 is folded, and wrinkles are generated in the intermediate skin 4c located between the upper skin 4a and the lower skin 4b. Upper and lower edge members 5a and 5b having core members 5a1 and 5b1 made of a material harder than the outer skin 4 are provided on the upper and lower sides of the intermediate skin 4c. Therefore, the heel is reliably formed on the intermediate skin 4c surrounded by the upper edge member 5a and the lower edge member 5b, whereby the heel is formed on the upper skin 4a or the lower skin 4b beyond the edge members 5a, 5b. Can be reduced. Thus, the design of the entire seat back 1 is improved. The intermediate skin 4c is formed of a material having lower rigidity than the upper skin 4a and the lower skin 4b. Thereby, wrinkles are likely to occur in the intermediate skin 4c, and wrinkles are likely to concentrate on the intermediate skin 4c. Thus, the design of the entire seat back 1 is improved.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form. For example, as shown in FIG. 3, in another form, the skin 4 has an upper bead member 5c including a core member 5a1 and an upper tube member 4a1, and a lower bead member 5d including a core member 5b1 and a lower tube member 4b1. May be. The upper cylinder member 4a1 is formed integrally with the lower end portion of the upper skin 4a. The lower cylinder member 4b1 is formed integrally with the upper end portion of the lower skin 4b.

  As shown in FIG. 3, the upper cylinder member 4a1 is formed by stitching a portion where the end portion of the upper skin 4a is folded back to the back side and stitched with a stitching portion 7e. The upper epidermis 4a is sewn to the upper end of the intermediate epidermis 4c by the sewn portion 7f above the sewn portion 7e. The lower cylinder member 4b1 is formed by stitching a portion where the end portion of the lower skin 4b is folded back and overlapped with a stitching portion 7g. The lower epidermis 4b is sewn to the lower end of the intermediate epidermis 4c by the sewn portion 7g below the sewn portion 7g.

  Therefore, as shown in FIG. 3, the upper edge member 5a has an upper cylinder member 4a1 into which the core material 5a1 is inserted, and the upper cylinder member 4a1 is formed at the lower end of the upper skin 4a. The lower ball edge member 5d has a lower cylinder member 4b1 into which the core material 5b1 is inserted, and the lower cylinder member 4b1 is formed at the upper end of the lower skin 4b. Therefore, the core members 5a1 and 5b1 can be attached to the skin 4 by the cylindrical members 4a1 and 4b1 formed by a part of the skin 4.

  In another form, the skin 4 has an upper bead member 5e having a core member 5a1 and an upper tube member 4c1, and a lower bead member 5f having a core member 5b1 and a lower tube member 4c2, as shown in FIG. May be. The upper cylinder member 4c1 is formed integrally with the upper end portion of the intermediate skin 4c. The lower edge member 5f is formed integrally with the upper end of the intermediate skin 4c.

  As shown in FIG. 4, the upper cylinder member 4c1 and the lower cylinder member 4c2 are formed by stitching the overlapped portions of the intermediate skin 4c with stitching portions 7j and 7p. The middle epidermis 4c is sewn to the lower end portion of the upper epidermis 4a or the upper end portion of the lower epidermis 4b by the stitching portions 7k, 7q at the center side of the stitching portions 7j, 7p. The distal end portion of the intermediate epidermis 4c is sewn to the distal end portion of the upper epidermis 4a or the distal end portion of the lower epidermis 4b on the distal end side of the stitched portions 7k and 7q.

  In another embodiment, the upper skin 4a has a side piece that covers the surface of the side portion of the upper region 3a of the pad 3 and a central piece that covers the center of the upper region 3a, and the side piece and the central piece are sewn together. It may be a form. In other forms, the lower skin 4b and the central skin 4d may be formed from one piece.

  In other forms, the core materials 5a1 and 5b1 may be strip-shaped. In another form, the upper edge member 5a and the lower edge member 5b have core members 5a1 and 5b1 and a non-cylindrical base member, and the core members 5a1 and 5b1 may be sewn or bonded to the base member. The base member may be stitched to the upper skin 4a, the intermediate skin 4c, and the lower skin 4b, or may be formed integrally with the skin.

  In another form, the seat back 1 may be capable of being folded at a plurality of positions in the vertical direction. In other forms, the vehicle seat 10 may be mounted on other vehicles such as a ship and an aircraft.

DESCRIPTION OF SYMBOLS 1 ... Seat back 2, 11a ... Frame 2c ... Middle folding mechanism 3, 11b ... Pad 4, 11c ... Skin 4a ... Upper skin 4a1, 4c1, 5a2 ... Upper cylinder member 4b ... Lower skin 4b1, 4c2, 5b2 ... Lower cylinder member 4c ... Intermediate skin 4d ... Central skin 4e ... Central lower skin 5a, 5c, 5e ... Upper edge member 5a1, 5b1 ... Core material 5b, 5d, 5f ... Lower edge member 6 ... Shield member 10 ... Vehicle sheet 11 ... Sheet cushion

Claims (2)

A vehicle seat back,
A frame that can be folded in the middle in the vertical direction, a pad attached to the frame, and a skin covering the surface of the pad;
The epidermis has an upper skin that covers the surface of the pad above the intermediate portion, a lower skin that covers the surface of the pad below the intermediate portion, and the upper skin and the lower skin And having an intermediate skin covering the surface of the pad,
An upper bead member extending along the upper edge of the intermediate skin is provided between the upper skin and the intermediate skin, and a lower edge of the intermediate skin is provided between the lower skin and the intermediate skin A lower bead member extending along the upper bead member and the lower bead member has a core formed of a material harder than the skin,
The intermediate skin is a seat back for a vehicle seat formed from a material having rigidity lower than that of the upper skin and the lower skin. The vehicle seat back according to claim 1,
The upper bead member has an upper cylindrical member into which the core material is inserted, and the upper cylindrical member is formed at a lower end portion of the upper skin or an upper end portion of the intermediate skin,
The lower bevel member has a lower cylinder member into which the core material is inserted, and the lower cylinder member is a seat back for a vehicle seat formed at an upper end portion of the lower skin or a lower end portion of the intermediate skin. .

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