Seat and method for manufacturing seat

Abstract

The purpose of the present invention is to provide a seat capable of improving the operability of a fixing operation of a back plate and a skin on the back surface side of a seat back. A seat back (1) is provided with: a cover member (3) that covers the front surface and both side surfaces of a frame (2); a back plate (5) covering the back surface of the frame (2); a skin (4) that covers the back surface of the back plate (5); and a first locking member (7). The cover member (3) has a skin fixing portion (3d). The skin (4) has a main body part (4a) that covers the back plate (5) and a pair of extension parts (4c) that extend outward in the width direction of the main body part (4a). The extension part (4c) is wound around the front surface side of the back plate (5) so as to be located between the back plate (5) and the skin fixing part (3d). The first locking piece (7) passes through the extension part (4c) and is locked to the skin fixing part (3d), so that the extension part (4c) is fixed to the skin fixing part (3d).

Description

Technical Field

[0001] The present invention relates to a seat having a seat back. Background Art

[0002] Conventionally, seats installed in vehicles such as automobiles generally have a seat back (backrest) structure for supporting the back of a seated person. The back side portion of the seat back includes a backboard fixed to the back side of a frame inside the seat and a back decorative member as a surface covering the back side of the backboard.

[0003] The back decorative member is usually installed in a manner that covers the outer surface side of the backrest board after being installed on the backrest board. In the conventional seats, the back decorative member is usually fixed to the side decorative member that is the surface skin constituting the outer side surface of the seat using a zipper. The zipper is installed by sewing along the edges of the back decorative member and the side decorative member that face each other. After the backrest board is installed, the zipper is closed, so that the back decorative member is fixed to the side decorative member.

[0004] However, when manufacturing a seat having the above-mentioned zipper, it is necessary to sew the zipper along the edges of the back trim and the side trim, to attach the backrest board to the frame using a clamp or the like, and to fix the back trim to the side trim using the zipper. Therefore, the number of operation steps in seat manufacturing is large, and separate parts are required to fix the backrest board and the back trim, so it is difficult to suppress the manufacturing cost.

[0005] In addition, as a seat having a structure for fixing the back decorative part without using a zipper, the structures described in Patent Documents 1 and 2 are known. These structures all use a clamp to fix a sheet-like member corresponding to the back decorative part to the backrest board. Specifically, the structure described in Patent Document 1 is that the folded part of the carpet is fixed to the backrest board by a clamp at the lower part of the back of the seat. In addition, the structure described in Patent Document 2 is that the surface skin is fixed by being embedded in the fitting hole of the backrest board by a clamp on the back side of the seat.

[0006] However, the structures described in Patent Documents 1 and 2 above all use clips instead of zippers to fix the back decorative member to the backrest board. However, in order to fix the backrest board to the frame, etc., another member and another operation are required, which is not sufficient in terms of improving workability.

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent Document 1: Japanese Patent Publication No. 5387635

[0010] Patent document 2: Japanese Patent Publication No. 8-256874 Summary of the invention

[0011] The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a seat capable of improving the workability of fixing a back board and a cover on the back side of a seat back.

[0012] In order to solve the above problems, the seat of the present invention includes: a seat back, wherein the seat back includes: a frame for the seat back; a cover member covering the front surface of the frame; a backboard covering the back of the frame; a skin covering the back of the backboard; and a first locking member fixing the skin to the cover member, wherein the cover member has: a front surface portion covering the front surface of the frame; a pair of side portions covering the two side surfaces of the frame; and a skin fixing portion arranged in a space formed by the front surface portion and the pair of side portions and having a first locking hole capable of being engaged with the first locking member, the skin having: a main body portion covering the back side of the backboard; and an extension portion extending from the periphery of the main body portion to the front surface side of the backboard and located between the backboard and the skin fixing portion, the first locking member passing through the extension portion and being locked to the first locking hole of the skin fixing portion, thereby fixing the extension portion to the skin fixing portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view showing the entire structure of a seat back of a seat according to an embodiment of the present invention.

[0014] Figure 2 yes Figure 1 Exploded perspective view of a seat back.

[0015] Figure 3 Viewed from the back and diagonally from the upper right Figure 2 A three-dimensional view of the cover component in a state.

[0016] Figure 4 Observed from the back side Figure 2 FIG. 1 is a diagram of a cover member.

[0017] Figure 5 yes Figure 2 A top view of the cover component.

[0018] Figure 6 Yes means Figure 2 The seat back is a method for manufacturing the seat back of the present invention. Figure 2 An explanatory diagram of a state before a pair of reinforcing plates are sewn to a pair of extended portions of a back trim.

[0019] Figure 7 Yes means Figure 2 The seat back is a method for manufacturing the seat back of the present invention. Figure 2 An explanatory diagram of a state in which a pair of reinforcing plates are sewn to a pair of extended portions of a back trim.

[0020] Figure 8 Yes means Figure 2 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state after a first clamp penetrates through an extension of a reinforcement plate and a back decorative member from a front surface side and a second clamp penetrates through a back surface side of a back plate.

[0021] Fig. 9 Yes means Figure 2 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state in which an extension portion of a back garnish is bent forward and surrounds a middle of a back board.

[0022] Fig.10 Yes means Figure 2 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state in which an extension portion of a back decorative member is wound around the front side and surrounds a back plate, and a reinforcing plate overlaps with a front surface of the back plate and an extension portion of the reinforcing plate is clamped to the front surface of the back plate by a second clamp.

[0023] Fig.11 Yes means Figure 2 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state in which a first clamp is locked in a first engaging hole of a surface fixing portion of a cover member and a second clamp is locked in a second engaging hole of a frame.

[0024] Fig.12 Yes means Figure 2 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state after a first clamp is clamped to a first engaging hole of a surface fixing portion of a cover member and a second clamp is clamped to a second engaging hole of a frame, that is, a state after the seat back is completed.

[0025] Fig.13 It is an exploded perspective view of a seat back according to a modification of the seat of the present invention, which does not include a second clamp and a reinforcing plate extension portion.

[0026] Fig.14 Yes means Fig.13 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state in which a first clamp penetrates through an extension portion of a reinforcement plate and a rear garnish from a front surface side.

[0027] Fig.15 Yes means Fig.13 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state in which an extension portion of a back garnish is bent forward and surrounds a middle of a back board.

[0028] Fig.16 Yes means Fig.13 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state in which an extension portion of a back decorative member is wound around the front side and surrounds a back plate, and a state in which a reinforcement plate overlaps a front surface of the back plate.

[0029] Fig.17 Yes means Fig.13 The present invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state in which a first clip is engaged with a first engaging hole of a surface fixing portion of a cover member.

[0030] Fig.18 Yes means Fig.13 The invention is an explanatory diagram of a method for manufacturing a seat back, and is an explanatory diagram showing a state after a first clamp is locked in a first engaging hole of a surface fixing portion of a cover member, that is, a state after the seat back is completed.

[0031] Fig.19 The invention is an explanatory diagram showing a method for manufacturing a seat back according to another modified example of the present invention, and is an explanatory diagram showing a state in which an extension of a rear decorative member surrounds a back plate having a protrusion midway and before the reinforcement plate extension is locked to the protrusion of the back plate.

[0032] Fig. 20 Yes means Fig.19 An explanatory diagram showing a state in which the projection of the back plate is engaged with the reinforcing plate extension portion and the first clamp is engaged with the first engaging hole of the surface fixing portion of the cover member, that is, a state after the seat back is completed. DETAILED DESCRIPTION

[0033] Hereinafter, a seat according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0034] like Figure 1 As shown, the seat according to the embodiment of the present invention includes a seat back 1 (backrest) for supporting the back of a seated person, and a seat cushion (not shown) for supporting the buttocks of the seated person.

[0035] As an example of a seat back, Figure 1 The seat back 1 shown is a seat back for the middle seat in the rear three-person seat of the vehicle. The seat back 1 is in the shape of a vertical rectangular parallelepiped and has a wide appearance capable of supporting the back in the width direction Y. An upper back cushion C1 and the like for supporting the upper back of the seat occupant are arranged on the upper side of the seat back 1, and a front cushion C2 and the like are arranged on the front side X1 of the seat back 1. The front cushion C2 can change its position between a position erected along the front surface of the seat back 1 and a position laid down toward the front side X1. The front cushion C2 can support the back of the seat occupant in the upright position, and can also be used as an armrest in the position laid down toward the front side X1.

[0036] In the drawings used in the present embodiment, the front-rear direction of the seat back 1 is indicated by arrow X (front side (front surface side) X1, rear side (back side) X2), the width direction is indicated by arrow Y, and the up-down direction is indicated by arrow Z.

[0037] like Figures 1-2 As shown, the seat back 1 includes: a vertical frame 2 that serves as a skeleton of the seat back 1; a cover member 3 that covers the front surface 2b and both side surfaces 2c of the frame 2; a back board 5 that covers the back surface 2d of the frame 2; a back decorative member 4 that serves as a surface covering the back surface 5c of the back board 5; a plurality of (six in this embodiment) first clips 7 that serve as first fasteners for fixing the back decorative member 4 to the cover member 3 (specifically, a decorative member fixing portion 3d described later); and a plurality of (two in this embodiment) second clips 17 that serve as second fasteners for fixing the back board 5 to the frame 2. In this embodiment, the back decorative member 4 has a pair of reinforcing plates 6 that serve as reinforcing portions for reinforcing a pair of extension portions 4c described later of the back decorative member 4.

[0038] The frame 2 of this embodiment is a vertical rectangular frame having the above-mentioned front surface 2b, side surfaces 2c on both sides and back surface 2d. The frame 2 has a pair of second engagement holes 2a at the lower beam portion that can engage with the second clamp 17 and are spaced apart in the width direction Y.

[0039] like Figures 2 to 5 As shown, the cover member 3 has: a front surface portion 3a covering the front surface 2b of the frame 2; and a pair of side portions 3b extending from the edges of both sides of the front surface portion 3a to the rear side X2 and covering the two side surfaces 2c of the frame 2. Therefore, the cover member 3 has a space 3c formed by the front surface portion 3a and the pair of side portions 3b and open to the rear side X2 (refer to Figures 2-3 and Figure 5 ).

[0040] The cover member 3 also has a plurality of (six in this embodiment) decoration fixing portions 3d (skin fixing portions) arranged in the above-mentioned space 3c for fixing the back decoration 4. In this embodiment, three decoration fixing portions 3d are provided on each of the inner side surfaces facing each other of the pair of side portions 3b.

[0041] Each garnish fixing portion 3 d has a contact surface 3 f facing the rear surface side X2 of the cover member 3 , and a first engagement hole 3 e formed on the contact surface 3 f and engageable with the first clamp 7 .

[0042] like Figure 2As shown, the backrest board 5 is a rectangular plate-shaped member having a size that can cover the back surface 2d of the frame 2. A pair of through holes 5a are formed at the lower end of the backrest board 5 at positions corresponding to the pair of second engagement holes 2a of the frame 2. The backrest board 5 is made of a material having a rigidity that does not dent even when the seated person's feet or the like collide with it, for example, a plastic corrugated board or a thick plastic board.

[0043] As shown in Figure 2 and Figure 6 As shown, the back decorative member 4 is a thin sheet-like member, and includes: a rectangular main body 4a having a size that can cover the back side X2 of the backrest board 5 (the same size as or slightly larger than the backrest board 5); and a lower belt portion 4b extending downward from the main body 4a, and a pair of extensions 4c. The back decorative member 4 can be any thin sheet-like member with flexibility, and can be made of natural leather, synthetic leather, synthetic resin materials, etc. In addition, the lower belt portion 4b is a member fixed to the lower end of the frame 2 or other specified installation positions, and is not a necessary structure in the present invention, so it can be omitted.

[0044] A pair of extensions 4c extend from both side edges of the main body 4a in the width direction Y to the outside of the main body 4a in the width direction Y. The width (length in the width direction Y) of the extension 4c is large enough to wrap around the side edge of the backboard 5 overlapping the main body 4a to the front surface side X1.

[0045] The pair of extensions 4c are provided with through holes 4d at positions corresponding to the heights of the first engaging holes 3e of the six garnish fixing portions 3d of the cover member 3. Figure 8 and Fig.11 The extended portion 4 c shown is arranged at a position that coincides with the position of the first engaging hole 3 e of the garnish fixing portion 3 d of the cover member 3 in a state surrounding the side edge of the backboard 5 .

[0046] like Figure 2 and Figure 6 As shown, the back decorative member 4 of this embodiment has a pair of reinforcing plates 6 as a reinforcing portion for reinforcing the peripheral portion of the through hole 4d in the pair of extensions 4c through which the first clamping member 7 passes. That is, the reinforcing portion of this embodiment is formed by a pair of reinforcing plates 6, which are fixed to the front surfaces 4cl of the pair of extensions 4c, thereby reinforcing the extensions 4c.

[0047] The reinforcing plate 6 is preferably made of a lightweight material that has both appropriate rigidity to reinforce the extension portion 4c and appropriate elasticity to facilitate surrounding operations on the extension portion 4c, for example, a thin plate made of a synthetic resin such as polypropylene (PP). Various materials such as metal thin plates and thick paper may be used as long as the material has at least the above-mentioned rigidity.

[0048] The reinforcing plate 6 is sewn (see Figure 7 The extension portion 4c is fixed by a sewing fixing portion 8) or the like, but may also be fixed by other fixing methods such as bonding.

[0049] As a specific structure, the reinforcing plate 6 has: a reinforcing plate main body 6a having a size substantially the same as that of the extension portion 4c and overlapping with the extension portion 4c in the front-to-back direction X; and a reinforcing plate extension portion 6b extending from the reinforcing plate main body 6a along the width direction Y to a position not overlapping with the extension portion 4c.

[0050] The reinforcing plate main body 6a has three through holes 6c formed at positions corresponding to the three through holes 4d of the above-mentioned extension portion 4c.

[0051] The reinforcing plate extension 6b has a structure that can be fixed to the front surface 5d of the backrest plate 5. Specifically, the reinforcing plate extension 6b has a through hole that can be engaged with the second clamp 17, that is, a third engaging hole 6d, so as to be fixed to the front surface 5d of the backrest plate 5. The third engaging hole 6d is arranged at a position corresponding to the height of the pair of second engaging holes 2a of the frame 2. In more detail, the third engaging hole 6d is at Figure 8 and Fig.10 The extended portion 4 c of the back garnish 4 shown is arranged at a position that matches the position of the through hole 5 a of the back board 5 while wrapping around the front surface side X1 of the back board 5 and surrounding the side edge of the back board 5 .

[0052] like Figure 2 As shown, the first clamp 7 is a member for fixing the extension portion 4 c of the rear garnish 4 and the reinforcing plate 6 to the garnish fixing portion 3 d of the cover member 3 , and is made of, for example, an inexpensive resin clamp.

[0053] The second clamp 17 is a member for fixing the backboard 5 and the reinforcing plate 6 to the back surface 2 d of the frame 2 , and is made of, for example, an inexpensive resin.

[0054] Figures 1 to 7 The above-mentioned components of the seat back 1 shown in FIG. Fig.12 The seat back 1 is assembled as shown.

[0055] Fig.12 In the seat back 1 shown, a pair of extensions 4c of the back garnish 4 are bent toward the front surface side X1 of the back board 5 and are wrapped around the front surface side X1 of the back board 5. In this state, the pair of extensions 4c are located between the back board 5 and the garnish fixing portion 3d. In addition, a pair of reinforcement plates 6 are overlapped on the front surface side X1 of the back board 5.

[0056] In addition, the first clamping member 7 passes through the extension 4c and the reinforcing plate 6, and the distal end of the first clamping member 7 is engaged with the first engaging hole 3e of the garnish fixing portion 3d. Accordingly, the pair of extensions 4c of the rear garnish 4 are fixed to the garnish fixing portion 3d in a state of abutting against the abutting surface 3f of the garnish fixing portion 3d.

[0057] Furthermore, the second clamping member 17 passes through the backrest plate 5 and the third engaging hole 6d of the reinforcing plate extension 6b to lock the reinforcing plate extension 6b to the front surface 5d of the backrest plate 5, and is also locked to the second engaging hole 2a of the frame 2, thereby fixing the backrest plate 5 together with the reinforcing plate 6 to the frame 2.

[0058] (Manufacturing method of seat back 1)

[0059] The seat back 1 configured as described above is specifically manufactured through the following steps.

[0060] First, if Figures 6-7 As shown, the reinforcing plate main body 6a of each of the pair of reinforcing plates 6 is overlapped on the pair of extensions 4c of the back decorative member 4, and sewn along the up-down direction Z to form the sewing fixing portion 8. When sewing, the through hole 6c of the reinforcing plate main body 6a and the through hole 4d of the extension 4c are aligned in position.

[0061] Then, if Figure 8 As shown, the second clamping member 17 is inserted into the pair of through holes 5a of the backrest board 5 from the rear side X2 so as to penetrate the backrest board 5. Then, the first clamping member 7 is inserted into the through hole 6c of the reinforcing plate main body 6a and the through hole 4d of the extension 4c from the front side X1 so as to penetrate the reinforcing plate 6 and the extension 4c. Then, the main body 4a of the back decorative member 4 is overlapped with the backrest board 5 from the rear side X2.

[0062] Then, if Figures 8 to 10 As shown, the back decorative member 4 and the backrest board 5 are integrated by making the pair of extensions 4c of the back decorative member 4 go around the front side X1. Specifically, the pair of reinforcing plates 6 are overlapped on the front surface 5d of the backrest board 5 by folding back in a manner that the pair of extensions 4c surround the two side edges of the backrest board 5. And the second clamping member 17 is passed through the third engaging hole 6d of the reinforcing plate extension 6b to clamp the reinforcing plate extension 6b to the front surface 5d of the backrest board 5. In addition, the extension 4c is wound around the front side X1 of the backrest board 5, so that the first clamping member 7 is arranged on the front surface side X1 of the backrest board 5.

[0063] In addition, Figures 8 to 12 In the figure, for easy visual identification, the back decorative member 4, the backrest board 5, and the reinforcing board 6 are slightly separated, but in fact, they are closely attached to each other.

[0064] Then, if Figures 11-12 As shown, the back decorative part 4 and the backboard 5, which are integrated by surrounding the two side edges of the backrest board 5 using a pair of extension parts 4c of the back decorative part 4, are brought close to the frame 2 and the decorative part fixing part 3d arranged in the space 3c of the cover member 3 from the back side X2, and the first clamping part 7 is clamped to the first clamping hole 3e of the decorative part fixing part 3d of the cover member 3. In addition, the second clamping part 17 is clamped to the second clamping hole 2a of the frame 2. In this way, the back decorative part 4 and the backboard 5 can be fixed to the cover member 3 and the frame 2 at the same time. By the steps described above, the above-mentioned Fig.12 The seat back 1 of the structure shown.

[0065] (Features of this embodiment)

[0066] (1) In the seat of this embodiment, Figure 2 and Fig.12 As shown, the back decorative member 4 covering the back side X2 of the backboard 5 of the seat back 1 includes: a main body 4a covering the back side X2 of the backboard 5; and a pair of extensions 4c extending from the periphery of the main body 4a to the front surface X1 of the backboard 5 and located between the backboard 5 and the decorative member fixing portion 3d (skin fixing portion). Therefore, the back decorative member 4 and the backboard 5 can be integrated using the pair of extensions 4c, and the back decorative member 4 and the backboard 5 can be installed at the same time.

[0067] That is, when manufacturing the seat back 1, the pair of extensions 4c are wound around the front surface side X1 of the backboard 5, so that the back decorative member 4 and the backboard 5 can be integrated together with the reinforcing plate 6. In addition, the first clamping member 7 penetrates the extension 4c and the reinforcing plate 6 and is locked in the first engaging hole 3e of the decorative member fixing portion 3d of the cover member 3, so that the extension 4c can be fixed to the decorative member fixing portion 3d. According to this, the back decorative member 4 and the backboard 5 can be fixed to the decorative member fixing portion 3d of the cover member 3 at the same time. As a result, the workability of the fixing operation of the backboard 5 and the back decorative member 4 on the back side X2 of the seat back 1 can be improved.

[0068] Furthermore, in the seat back 1 of the above-mentioned structure, the assembly of the back plate 5 and the back decorative member 4 in the seat back 1 does not require a zipper, and the back plate 5 and the back decorative member 4 can be fixed simultaneously by using an inexpensive resin clamp as the first clamp 7. Therefore, the zipper is eliminated from the appearance of the seat, and the appearance of the seat back 1 is also improved. In addition, since the back plate 5 and the back decorative member 4 are fixed simultaneously by using an inexpensive resin clamp (first clamp 7), the manufacturing cost can also be reduced. In particular, in the above-mentioned seat back 1, the back decorative member 4 and the back plate 5 can be fixed simultaneously to the cover member 3 by a simple operation of locking the first clamp 7 to the first engaging hole 3e of the decorative member fixing portion 3d of the cover member 3. Therefore, the complicated sewing operation for attaching the zipper to the back decorative member 4 in the conventional seat manufacturing is unnecessary, which is very advantageous in reducing the manufacturing cost.

[0069] Furthermore, since the extension 4c of the back decorative member 4 is reinforced by the reinforcing plate 6, the extension 4c fixed by the first clamp 7 is not damaged around the through hole 4d. Furthermore, the extension 4c and its surroundings fixed by the first clamp 7 are not wrinkled or twisted, so the appearance of the back decorative member 4 is improved.

[0070] (2) In the seat of this embodiment, the back trim 4 has a pair of reinforcing plates 6 as reinforcing portions for reinforcing at least the periphery of the through hole 4d through which the first clamp 7 penetrates in the extension portion 4c. This prevents the through hole 4d from being elongated by the first clamp 7.

[0071] Furthermore, in this embodiment, the extension portion 4c can be reinforced by fixing the reinforcing plate 6 as a reinforcing portion to the front surface 4c1 of the extension portion 4c. Furthermore, by using the reinforcing plate 6, the entire extension portion 4c can be easily and reliably reinforced. Furthermore, the reinforcing plate 6 can be used to reliably present the straight line of the folded portion of the extension portion 4c, and the appearance of the back decorative member 4 can be improved.

[0072] Furthermore, since the rigidity of the reinforcing plate 6 is higher than that of the extended portion 4c, it is easy to fold the extended portion 4c back at the reinforcing plate 6. Therefore, it is easy to surround the backboard 5 using the extended portion 4c.

[0073] In addition, in the present embodiment, the reinforcing plate 6 fixed to the front surface 4c1 of the reinforcing plate 4c is given as an example as the reinforcing portion for reinforcing the extension portion 4c, but the present invention is not limited to this, and as long as at least the peripheral portion of the portion (through hole 4d) through which the first clamping member 7 in the extension portion 4c passes is reinforced, a member other than the reinforcing plate 6 may be used. For example, as other reinforcing portions, a metal ring (metal eyelet) embedded in the peripheral portion of the through hole 4d of the extension portion 4c; or a resin layer or adhesive layer impregnated and cured in the peripheral portion of the through hole 4d of the extension portion 4c may be used.

[0074] (3) In the seat of this embodiment, if Figures 6-7 and Fig.10 As shown, the reinforcing plate 6 has: a reinforcing plate main body 6a overlapping with the extension 4c; and a reinforcing plate extension 6b extending from the reinforcing plate main body 6a to a position not overlapping with the extension 4c. The reinforcing plate extension 6b has a structure that can be fixed to the front surface 5d of the backrest plate 5. Specifically, the reinforcing plate extension 6b has a through hole that can be engaged with the second clamping member 17 that penetrates the backrest plate 5, that is, a third engaging hole 6d, so as to be fixed to the front surface 5d of the backrest plate 5.

[0075] According to this structure, the reinforcing plate extension 6b is fixed to the front surface 5d of the backrest board 5 by having the structure as described above. Specifically, the second clamping member 17 penetrating the backrest board 5 is engaged with the third engaging hole 6d of the reinforcing plate extension 6b, so that the reinforcing plate extension 6b is fixed to the front surface 5d of the backrest board 5. According to this, the reinforcing plate 6 and the backrest board 5 can be maintained in a state of overlapping. Therefore, when the first clamping member 7 is used to fix the extension 4c of the back decorative member 4 to the decorative member fixing portion 3d of the cover member 3, the reinforcing plate 6 will not be offset relative to the backrest board 5, so the operability is improved.

[0076] (4) In the seat of the present embodiment, the seat back 1 includes the second clamp 17 for fixing the back board 5 to the frame 2. The frame 2 has the second engagement hole 2a that can be engaged with the second clamp 17. As described above, the reinforcing plate extension 6b has the third engagement hole 6d, which is a through hole that can be engaged with the second clamp 17, in order to be fixed to the front surface 5d of the back board 5.

[0077] like Fig.12 As shown, the second clamping member 17 penetrates the third engaging hole 6d of the reinforcing plate extension 6b while penetrating the backrest plate 5, and stops the reinforcing plate extension 6b on the front surface 5d of the backrest plate 5, and is engaged with the second engaging hole 2a of the frame 2, thereby fixing the backrest plate 5 and the reinforcing plate 6 to the frame 2 together.

[0078] According to this structure, the second clamp 17 penetrates the third engaging hole 6d of the reinforcing plate extension 6b and locks the reinforcing plate extension 6b to the front surface 5d of the backrest board 5. Therefore, when the first clamp 7 is used to fix the extension 4c of the back decorative member 4 to the decorative member fixing portion 3d of the cover member 3, the reinforcing plate 6 will not be offset relative to the backrest board 5, so the operability is improved. In addition, the second clamp 17 is locked in the second engaging hole 2a of the frame 2, so that the backrest board 5 and the reinforcing plate 6 are fixed to the frame 2 together, so that the backrest board 5, the reinforcing plate 6 and the extension 4c of the back decorative member 4 fixed with the reinforcing plate 6 can be fixed more stably, and the accuracy of the installation position is also improved.

[0079] (5) In the seat of this embodiment, if Figure 2 and Figure 6 As shown, the extension 4c of the back decorative member 4 extends from both side edges of the body 4a in the width direction Y to the outside of the body 4a in the width direction Y. The decorative member fixing portions 3d of the cover member 3 are respectively provided on the inner side surfaces of the pair of side portions 3b facing each other.

[0080] According to this structure, a pair of extension portions 4c of the back decorative part 4 are wrapped around the front surface side X1 of the backrest board 5 so as to stably support the backrest board 5 from both sides in the width direction Y, and the back decorative part 4 and the backrest board 5 can be stably fixed to the decorative part fixing portions 3d respectively arranged on a pair of side portions 3b of the cover member 3.

[0081] (6) In the seat manufacturing method of this embodiment, the step of integrating the back trim 4 and the backboard 5 using the extension portion 4c of the back trim 4 and the step of simultaneously mounting the back trim 4 and the backboard 5 on the trim fixing portion 3d of the cover member 3 can be performed continuously.

[0082] That is, when manufacturing the seat back 1, after the first clamp 7 is passed through the extension 4c of the back trim 4 from the front surface side X1, the extension 4c is wound around the front surface side X1 of the back board 5 together with the first clamp 7, so that the back trim 4 and the back board 5 can be integrated. At this time, the first clamp 7 is located on the front surface side X1 of the back board 5. Therefore, the integrated back trim 4 and the back board 5 are brought close to the frame 2 and the trim fixing portion 3d arranged in the space 3c of the cover member 3 from the back side X2 side, and the first clamp 7 is locked in the first engagement hole 3e of the trim fixing portion 3d of the cover member 3, so that the extension 4c can be fixed to the trim fixing portion 3d. As a result, the workability of the back board 5 and the back trim 4 on the back side X2 of the seat back 1 can be improved.

[0083] (Variation Example)

[0084] (A) In the seat according to the above embodiment, the seat back 1 includes a second clamp 17 (see Figure 2 and Fig.12 ), and has a reinforcing plate extension portion 6b that is locked to the second clamping member 17 (refer to Figure 6 and Fig.12 ), but even without the second clamping member 17 and the reinforcing plate extension 6b, (1), (2) and (5) of the above (features of the embodiment) can be achieved.

[0085] For example, as a modified example of the present invention, it is considered that there is no second clamping member 17 and reinforcing plate extension 6b. Fig.13 Seat back shown.

[0086] In the seat back, as Fig.13 As shown, there is no second clamp 17 and reinforcing plate extension 6b. Instead, on both sides of the width direction Y of the seat back, there are four through holes 4d of the first clamp 7, the trim fixing portion 3d of the cover member 3, the extension 4c of the back trim 4, and the reinforcing plate 6. This allows the pair of extensions 4c of the back trim 4 to be stably fixed to the cover member 3. Fig.13 In the seat back of the embodiment, there is no second clamping member 17, and accordingly, the through hole 5a of the back plate 5 and the second engaging hole 2a of the frame 2 are also omitted.

[0087] Make the Fig.13 The steps of the seat back according to the modified example are as follows. Since the second clamp 17 is not provided, the steps are simpler.

[0088] First, if Fig.14 As shown, the first clamp 7 is inserted into the through hole 6c of the reinforcement plate main body 6a and the through hole 4d of the extension 4c from the front side X1. Then, the main body 4a of the back garnish 4 is overlapped with the backboard 5 from the back side X2.

[0089] Then, if Figures 14 to 16 As shown, the pair of extensions 4 c of the back trim 4 are wound around the front side X1 and folded back to surround both side edges of the back board 5 , and the pair of reinforcement plates 6 are overlapped on the front surface 5 d of the back board 5 .

[0090] Then, if Figures 17-18As shown in FIG. 1 , the first clamp 7 is locked in the first engaging hole 3e of the decorative member fixing portion 3d of the cover member 3 while the two side edges of the backrest board 5 are surrounded by the pair of extensions 4c of the back decorative member 4. In this way, the back decorative member 4 and the backrest board 5 can be fixed to the cover member 3 at the same time. Fig.18 The seat back of the structure shown.

[0091] (B) Even if the reinforcing plate 6 does not have the reinforcing plate extension 6b of the above embodiment, the backrest board 5 can be fixed to the frame 2 using the second clamp 17 to more stably fix the backrest board 5. In this case, (1), (2) and (5) of the above (features of the embodiment) can also be achieved.

[0092] (C) In addition, as another modified example of the present invention, instead of the second clamping member 17 of the above embodiment, Figures 19-20 As shown, the backboard 5 may be provided with a protrusion 5b protruding toward the front side X1 from the front surface 5d of the backboard 5. In response to this, the reinforcing plate extension 6b may have a fourth engagement hole 6e that can engage with the protrusion 5b.

[0093] The backboard 5 in this modified example is made of a plastic molded product or the like that can be integrally molded with the protrusion 5 b.

[0094] In this Figures 19-20 In the modified example shown, the protrusion 5b protruding from the front surface 5d of the backboard 5 toward the front side X1 is engaged with the fourth engaging hole 6e of the reinforcing plate extension 6b, so that the reinforcing plate extension 6b can be locked to the front surface 5d of the backboard 5. Therefore, when the extension 4c of the back decorative member 4 is fixed to the decorative member fixing portion 3d of the cover member 3 using the first clamp 7, the reinforcing plate 6 does not deviate relative to the backboard 5, so the operability is improved.

[0095] In addition, by adopting Figures 19-20 The above-mentioned modification example shown has a reverse structure, that is, by providing a protrusion on the reinforcing plate extension 6 b and providing an engaging hole on the back plate 5 , the reinforcing plate extension 6 b can also be fixed to the back plate 5 .

[0096] (D) The extension 4c of the back decorative member 4 may extend not only in the width direction Y of the main body 4a as in the above-mentioned embodiment and the modified examples (A) to (C), but also in the up-down direction Z. In addition, the decorative member fixing portion 3d of the cover member 3 may be arranged at the end portion in the up-down direction Z in the space 3c corresponding to the position of the extension 4c extending in the up-down direction Z. Even in this structure, in the same manner as in the above-mentioned embodiment, the extension 4c of the back decorative member 4 is wound around the front surface side X1 of the backrest board 5 to surround both ends in the up-down direction Z of the backrest board 5 and overlap the reinforcing plate 6, and the first clamping member 7 is passed through the extension 4c and the reinforcing plate 6 and is locked in the first engaging hole 3e of the decorative member fixing portion 3d, so that the extension 4c can be fixed to the decorative member fixing portion 3d in a state of abutting against the abutting surface 3f of the decorative member fixing portion 3d of the cover member 3. In this way, the back decorative member 4 and the backrest board 5 can be fixed to the cover member 3 at the same time.

[0097] <Overview of Implementation>

[0098] The embodiments are summarized as follows.

[0099] The seat of this embodiment includes: a seat back, wherein the seat back includes: a frame, which is a skeleton for the seat back; a cover member, which covers the front surface of the frame; a backboard, which covers the back of the frame; a skin, which covers the back of the backboard; and a first locking member, which fixes the skin to the cover member, wherein the cover member has: a front surface portion covering the front surface of the frame; a pair of side portions covering two side surfaces of the frame; and a skin fixing portion that is arranged in a space formed by the front surface portion and the pair of side portions and has a first locking hole that can be engaged with the first locking member, the skin having: a main body portion covering the back side of the backboard; and an extension portion that extends from the periphery of the main body portion around the front surface side of the backboard and is located between the backboard and the skin fixing portion, the first locking member passes through the extension portion and is locked to the first locking hole of the skin fixing portion, thereby fixing the extension portion to the skin fixing portion.

[0100] According to this structure, the skin covering the back side of the backrest board has: a main body portion covering the back side of the backrest board; and an extension portion that extends from the periphery of the main body portion around the front surface side of the backrest board and is located between the backrest board and the skin fixing portion. Therefore, the extension portion can be used to make the skin and the backrest board become one, and the skin and the backrest board can be installed at the same time.

[0101] That is, when manufacturing the seat back, the skin and the backboard can be integrated by making the extension part go around the front surface side of the backboard. In addition, the first locking piece passes through the extension part and is locked in the first locking hole of the skin fixing part of the cover member, so that the extension part can be fixed to the skin fixing part. According to this, the skin and the backboard can be fixed to the skin fixing part of the cover member at the same time. As a result, the operability of the backboard and the skin fixing operation on the back side of the seat back can be improved.

[0102] In the above-mentioned seat, preferably, the skin has a reinforcement portion for reinforcing at least a peripheral portion of a portion of the extended portion through which the first locking piece penetrates.

[0103] According to this configuration, the peripheral portion of the portion of the extended portion of the skin through which the first locking member penetrates is reinforced by the reinforcing portion, thereby preventing the through hole of the extended portion from being elongated by the first locking member.

[0104] In the above-mentioned seat, preferably, the reinforcement portion is formed of a reinforcement plate that is fixed to a front surface of the extension portion to reinforce the extension portion.

[0105] According to this structure, the reinforcing plate as the reinforcing portion can be fixed to the front surface of the extension portion to reinforce the extension portion. In addition, by using the reinforcing plate, the entire extension portion can be easily and reliably reinforced. In addition, the reinforcing plate can be used to reliably present the straight line of the folded back portion of the extension portion, which can improve the appearance of the back decorative part.

[0106] In the above-mentioned seat, preferably: the reinforcement plate has: a reinforcement plate main body overlapping with the extension portion; and a reinforcement plate extension extending from the reinforcement plate main body to a position not overlapping with the extension portion, wherein the reinforcement plate extension has a structure that can be fixed to the front surface of the backrest plate.

[0107] According to this structure, the reinforcing plate extension is fixed to the front surface of the backrest plate, so that the reinforcing plate and the backrest plate can be kept overlapping. Therefore, when the first fastener is used to fix the skin extension to the skin fixing portion of the cover member, the reinforcing plate will not be offset relative to the backrest plate, thereby improving operability.

[0108] In the above-mentioned seat, it is preferably also included: a second locking piece, fixing the backrest board to the frame, wherein the frame has a second locking hole that can be engaged with the second locking piece, and the reinforcing plate extension has: a through hole that can be engaged with the second locking piece, namely a third locking hole, for fixing the reinforcing plate extension to the front surface of the backrest board, the second locking piece passes through the third locking hole of the reinforcing plate extension to lock the reinforcing plate extension to the front surface of the backrest board, and is locked to the second locking hole of the frame, thereby fixing the backrest board and the reinforcing plate together to the frame.

[0109] According to this structure, the second clamping piece penetrates the third clamping hole of the extension of the reinforcing plate and clamps the extension of the reinforcing plate to the front surface of the backrest plate. Therefore, when the first clamping piece is used to fix the extension of the skin to the skin fixing portion of the cover member, the reinforcing plate will not be offset relative to the backrest plate, so the operability is improved. In addition, the second clamping piece is clamped to the second clamping hole of the frame, so that the backrest plate and the reinforcing plate are fixed to the frame together, so that the backrest plate, the reinforcing plate and the extension of the skin to which the reinforcing plate is fixed can be fixed more stably, and the accuracy of the installation position is also improved.

[0110] In the above-mentioned seat, the back plate may include a protrusion protruding forward from a front surface of the back plate, and the reinforcing plate extension may include a fourth engaging hole engageable with the protrusion.

[0111] According to this structure, the protrusion protruding forward from the front surface of the backrest plate is engaged with the fourth engaging hole of the reinforcing plate extension portion, so that the reinforcing plate extension portion can be locked to the front surface of the backrest plate. Therefore, when the first locking piece is used to fix the skin extension portion to the skin fixing portion of the cover member, the reinforcing plate will not be offset relative to the backrest plate, thereby improving operability.

[0112] In the above-mentioned seat, preferably: the extension portion of the skin extends outward in the width direction from both side edges of the main body portion, and the skin fixing portion of the cover member is respectively arranged on the inner side surfaces of the pair of side portions facing each other.

[0113] According to this structure, the pair of extensions of the skin are wrapped around the front surface side of the backboard to stably support the backboard from both sides in the width direction, and the skin and the backboard can be stably fixed to the decoration member fixing portions respectively provided on the pair of side surfaces of the cover member.

[0114] The manufacturing method of the seat of the present embodiment is the manufacturing method of the seat mentioned above, and includes: the step of preparing the skin in a state where the extension portion is unfolded relative to the main body portion; the step of allowing the first fixing member to penetrate the extension portion from the front surface side of the extension portion; the step of overlapping the main body of the skin on the back side of the backrest board, and wrapping the extension portion together with the first fixing member to the front surface side of the backrest board, thereby making the skin and the backrest board become one; and the step of making the integrated skin and the backrest board approach the frame and the skin fixing portion arranged in the space of the cover member from the back side, and locking the first fixing member to the first engaging hole of the skin fixing portion, thereby fixing the extension portion to the skin fixing portion.

[0115] According to this configuration, the step of integrating the skin and the backboard using the extended portion of the skin and the step of simultaneously attaching the skin and the backboard to the skin fixing portion of the cover member can be performed continuously.

[0116] That is, when manufacturing the seat back, after the first stopper is passed through the front surface side of the extension of the cover, the extension is wound around the front surface side of the backboard together with the first stopper, so that the cover and the backboard can be integrated. At this time, the first stopper is on the front surface side of the backboard, so that the above-mentioned step of integrating the cover and the backboard is continuous, and the integrated cover and backboard are brought close to the frame and the cover fixing part arranged in the space of the cover member from the back side, and the first stopper is locked to the first engagement hole of the cover fixing part of the cover member, so that the extension can be fixed to the cover fixing part. As a result, the operability of the backboard and cover fixing operation on the back side of the seat back can be improved.

[0117] As described above, according to the seat and the seat manufacturing method of the present embodiment, it is possible to improve the workability of the fixing operation of the back board and the cover on the back surface side of the seat back.

Claims

1. A seat, characterized in that include: Seat back, wherein The seat back comprises: a frame for the seat back; a cover member covering the front surface of the frame; a backrest board covering the back side of the frame; a skin covering the back side of the backrest plate; and The first fastener fixes the skin to the cover member, wherein: The cover member comprises: a front surface portion covering the front surface of the frame; a pair of side portions covering two side surfaces of the frame; and a skin fixing portion disposed in a space formed by the front surface portion and the pair of side portions and having a first engaging hole capable of engaging with the first locking member, The skin has: a main body portion covering the back side of the backboard; and an extension portion extending from the periphery of the main body portion to the front side of the backboard and located between the backboard and the skin fixing portion. The first locking piece passes through the extension portion and is locked to the first locking hole of the skin fixing portion, thereby fixing the extension portion to the skin fixing portion.

2. The seat according to claim 1, characterized in that: The skin has a reinforcement portion that reinforces at least a peripheral portion of a portion of the extension portion through which the first locking piece penetrates.

3. The seat according to claim 2, characterized in that: The reinforcement portion is formed of a reinforcement plate that is fixed to the front surface of the extension portion to reinforce the extension portion.

4. The seat according to claim 3, characterized in that: The reinforcing plate comprises: a reinforcing plate main body overlapping with the extension portion; and a reinforcing plate extension portion extending from the reinforcing plate main body to a position not overlapping with the extension portion, wherein The reinforcement plate extension has a structure capable of being fixed to the front surface of the backrest plate.

5. The seat according to claim 4, characterized in that Also includes: The second fastener fixes the backrest plate to the frame, wherein: The frame has a second engaging hole capable of engaging with the second locking piece. The reinforcing plate extension has: The third engaging hole, which is a through hole that can be engaged with the second engaging member, is used to fix the reinforcing plate extension to the front surface of the backrest plate. The second locking piece penetrates the third locking hole of the reinforcing plate extension to lock the reinforcing plate extension to the front surface of the back plate, and is locked to the second locking hole of the frame, thereby fixing the back plate and the reinforcing plate to the frame.

6. The seat according to claim 4, characterized in that: The backrest plate has a protrusion protruding forward from the front surface of the backrest plate, The reinforcing plate extension portion has a fourth engaging hole that can engage with the protrusion.

7. The seat according to any one of claims 1 to 6, characterized in that: The extension portion of the skin extends from two side edges of the main body in the width direction to the outside in the width direction respectively. The skin fixing portions of the cover member are respectively provided on inner surfaces of the pair of side surfaces facing each other.

8. A method for manufacturing a seat, characterized in that The method for manufacturing the seat of claim 1, comprising: a step of preparing the skin in a state where the extension portion is unfolded relative to the main body portion; The step of allowing the first locking member to penetrate the extension portion from the front surface side of the extension portion; The step of overlapping the main body of the skin on the back side of the backboard and wrapping the extension portion together with the first stopper around the front side of the backboard, thereby integrating the skin and the backboard; and The step of bringing the integrated skin and the backrest plate closer to the frame and the skin fixing portion arranged in the space of the cover member from the back side, and locking the first locking piece into the first locking hole of the skin fixing portion, thereby fixing the extension portion to the skin fixing portion.

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