Seat cover mounting structure and vehicle seat

Abstract

To provide a seat cover mounting structure that allows a vehicle seat to be easily disassembled, and a vehicle seat equipped with the seat cover mounting structure. [Solution] A vehicle seat (10) to which the seat cover mounting structure is applied comprises a back trim (18) having a trim main body (26) that covers a back pad (16) supported by a back frame (14) of the vehicle seat (10) and a locking cord (30) extending from the trim main body (26), and a cord locking member (20) attached to the back frame (14). The cord locking member (20) has through holes (32C, 34C) formed in its inner periphery, and the locking cord (30) is locked in a state in which the locking cord (30) is pulled out from the trim main body (26) side through the through holes (32C, 34C) to the opposite side of the trim main body (26). In addition, the cord locking member (20) is pressed toward the connecting frame portion (24) of the back frame (14) by the tension generated in the locking cord (30).

Description

[Technical Field]

[0001] This invention relates to a seat cover mounting structure and a vehicle seat. [Background technology]

[0002] In the seat cover fastening structure disclosed in Patent Document 1 below, a string member attached to the seat cover is passed through the pad to cover the pad, and the string member of this covered seat cover is fastened along the longitudinal direction of the pad, and the lower edge of the side of the seat cover is fastened to the seat frame. By fastening the string member in this manner, even when the seat cover is fastened to the pad, the seat cover can be fastened without the need for a separate reinforcing member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-121571 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration described in Patent Document 1, when the seat is dismantled, the seat cover and pad are removed from the seat frame. At this time, it is necessary to release the seat cover from the seat frame and the string members from the pad. If multiple string members are attached to the seat cover, it is necessary to release each of the multiple string members from the pad, which makes dismantling cumbersome.

[0005] SUMMARY OF THE INVENTION In consideration of the above, an object of the present invention is to provide a seat cover mounting structure that allows for easy dismantling of a vehicle seat, and a vehicle seat equipped with the seat cover mounting structure. [Means for solving the problem]

[0006] The seat cover mounting structure of the first embodiment comprises a seat cover having a cover body that is placed over a pad supported by an internal structure of a vehicle seat and a locking string extending from the cover body, and a string locking member that is attached to the internal structure and has a through hole formed in its inner circumference, and in a state where the locking string is pulled out from the cover body side through the through hole to the side opposite to the cover body, the locking string is locked and is pressed toward the internal structure side by the tension generated in the locking string.

[0007] In the first embodiment of the seat cover mounting structure, a strap locking member is attached to the internal structure. Here, the strap of the seat cover is pulled out from the cover body side through a through hole formed in the inner circumference of the strap locking member and locked to the strap locking member on the opposite side from the cover body. The strap locking member is also pressed toward the internal structure side by the tension generated in the strap. In this configuration, when the strap is removed from the strap locking member, the tension in the strap is released, and the force pressing the strap locking member toward the internal structure side is removed. As a result, the strap locking member can be easily removed from the internal structure. Thus, in the first embodiment of the seat cover mounting structure, the dismantling of the vehicle seat can be easily facilitated.

[0008] The seat cover mounting structure of the second embodiment is characterized in that, in the seat cover mounting structure of the first embodiment, the string locking member has a guide groove that extends from the through hole side toward the outer circumference side of the string locking member, and the locking string pulled out through the through hole is routed through the guide groove toward the outer circumference side of the string locking member and wrapped around the outer circumference of the string locking member.

[0009] In the seat cover mounting structure of the second aspect, the cord locking member has a guide groove formed therein that extends from the through-hole toward the outer periphery of the cord locking member. The cord is drawn out through the through-hole, routed through the guide groove toward the outer periphery of the cord locking member, and wound around the outer periphery of the cord locking member. With this configuration, the portion of the cord that is positioned in the guide groove can be prevented or suppressed from shifting when the cord is wound around the outer periphery of the cord locking member.

[0010] The seat cover mounting structure of the third aspect is the seat cover mounting structure of the second aspect, in which the cord locking member has a plurality of boss portions formed on the internal structure side that protrude toward the internal structure and are spaced apart in the direction in which the locking cord is wrapped around the outer periphery of the cord locking member, and each of the plurality of boss portions is fitted into the internal structure.

[0011] In the seat cover mounting structure of the third aspect, the plurality of bosses formed on the cord-locking member in the above-described arrangement are fitted into the internal structure, which prevents or suppresses the cord-locking member from shifting relative to the internal structure when the cord is wound around the outer periphery of the cord-locking member.

[0012] A seat cover mounting structure of a fourth aspect is the seat cover mounting structure of the third aspect, wherein the boss portion is provided with a retaining portion that maintains the state in which it is fitted into the internal structure.

[0013] In the seat cover mounting structure of the fourth aspect, the retaining portion is provided, so that the boss portion can be kept fitted into the internal structure.

[0014] The seat cover mounting structure of the fifth aspect is a seat cover mounting structure of any one of the first to fourth aspects, in which the string locking member has a divided structure consisting of a winding member around which the locking string is wound and a first base member and a second base member that sandwich the winding member, and the winding member is rotatable relative to the first base member and the second base member.

[0015] In the fifth embodiment of the seat cover mounting structure, the string locking member has a divided structure consisting of a winding member and a first base member and a second base member that sandwich the winding member. This configuration makes it possible to realize a string locking member with a more complex shape compared to a string locking member composed of a single part. In addition, the locking string can be wound onto the winding member by rotating the winding member relative to the first base member and the second base member.

[0016] A vehicle seat according to the sixth embodiment comprises an internal structure, a pad supported by the internal structure, a seat cover having a cover body that covers the pad and a locking string extending from the cover body, and a string locking member attached to the internal structure to which a seat cover mounting structure according to any one of the first to third embodiments is applied.

[0017] In the vehicle seat of the sixth aspect, the seat cover mounting structure of any one of the first to fifth aspects is applied, thereby making it possible to easily dismantle the vehicle seat. [Effects of the Invention]

[0018] The seat cover mounting structure and vehicle seat according to the present invention have the excellent effect of facilitating the disassembly of the vehicle seat. [Brief explanation of the drawings]

[0019] [Figure 1] This is a schematic diagram showing the seat back of a vehicle seat. [Figure 2] This is a schematic cross-sectional view showing the cord locking member and the locking cord. [Figure 3] This figure schematically shows the cord locking member and locking cord as viewed from the direction of arrow 3 shown in Figure 2. [Figure 4] This is a perspective view of the cord securing component, seen from the opposite side of the back frame. [Figure 5]FIG. 10 is a perspective view of the cord locking member as seen from the back frame side. [Figure 6] FIG. 2 is an exploded perspective view showing the cord locking member. [Figure 7] FIG. 10 is a side view showing a boss portion having a retaining portion. DETAILED DESCRIPTION OF THE INVENTION

[0020] 1 to 6, a vehicle seat 10 according to an embodiment of the present invention will be described. In the drawings, the arrow FR indicates the front side of the seat, the arrow UP indicates the upper side of the seat, the arrow LH indicates the left side in the width direction of the seat, and the arrow RH indicates the right side in the width direction of the seat. In the following description, unless otherwise specified, when referring to front-rear, up-down, and left-right directions, these refer to front-rear in the front-rear direction of the seat, up-down in the up-down direction of the seat, and left-right in the width direction of the seat.

[0021] 1 schematically shows a seat back 12 of a vehicle seat 10. As shown in this figure, the seat back 12 includes a back frame 14 as an internal structure that forms the framework of the seat back 12, and a back pad 16 as a pad supported by the back frame 14. The vehicle seat 10 also includes a back trim 18 as a seat cover attached to the back pad 16, and a plurality of (two in FIG. 1) string locking members 20 attached to the back frame 14.

[0022] The back frame 14 includes a pair of left and right side frame portions 22 that are spaced apart in the left-right direction and extend in the up-down direction, and a connecting frame portion 24 that spans between the pair of left and right side frame portions 22.

[0023] The back pad 16 is formed into a predetermined shape using urethane foam, etc. The back pad 16 is attached to the back frame 14 from the front side.

[0024] The back trim 18 includes a trim main body 26 as a cover main body covering the surface of the back pad 16 facing the seated occupant (the side opposite to the back frame 14), a tubular hanging bag 28 fixed to the trim main body 26, and a locking cord 30 that is passed through the hanging bag 28 and extends from the hanging bag 28 (trim main body 26) toward the back frame 14. In this embodiment, a portion 30A on one side and a portion 30B on the other side of the locking cord 30 extend from both ends of the hanging bag 28 toward the back frame 14. As shown in FIGS. 1 to 3, the portion 30A on one side and the portion 30B on the other side of the locking cord 30 are respectively locked to two cord locking members 20, which will be described later, thereby keeping the trim main body 26 covered over the back pad 16.

[0025] As shown in Figures 4 to 6, the string locking member 20 has a segmented structure consisting of a first base member 32, a second base member 34, and a winding member 36.

[0026] The first base member 32 is formed in a substantially disc shape. The portion of the first base member 32 facing the second base member 34 is a small-diameter portion 32A, and the portion of the first base member 32 opposite to the second base member 34 is a large-diameter portion 32B with a larger outer diameter than the small-diameter portion 32A. As a result, a step is formed at the boundary between the small-diameter portion 32A and the large-diameter portion 32B, with a difference in height in the radial direction between the small-diameter portion 32A and the large-diameter portion 32B. A through hole 32C is formed in the central part of the inner circumference of the small-diameter portion 32A and the large-diameter portion 32B, penetrating from the small-diameter portion 32A side to the large-diameter portion 32B side (penetrating in the axial direction of the small-diameter portion 32A and the large-diameter portion 32B). The inner diameter of the through hole 32C on the small-diameter portion 32A side is constant. Furthermore, the inner diameter of the through hole 32C on the large-diameter portion 32B side gradually increases as it moves away from the small-diameter portion 32A. As a result, the inner surface of the through hole 32C on the large-diameter portion 32B side has a funnel-shaped tapered surface 32D. In addition, around the through hole 32C in the small-diameter portion 32A and the large-diameter portion 32B, there are multiple (three in this embodiment) locking holes 32E that penetrate from the small-diameter portion 32A side towards the large-diameter portion 32B side (penetrating in the axial direction of the small-diameter portion 32A and the large-diameter portion 32B) and are spaced apart in the circumferential direction of the small-diameter portion 32A and the large-diameter portion 32B. The first base member 32 also has multiple (two in this embodiment) boss portions 32F that protrude from around the through hole 32C in the large-diameter portion 32B toward the opposite side from the small-diameter portion 32A. The plurality of boss portions 32F are each formed in a cylindrical shape and are arranged at intervals along the circumferential direction of the large diameter portion 32B.

[0027] The second base member 34 is formed in a generally circular plate shape, similar to the first base member 32. The portion of the second base member 34 facing the first base member 32 is a small-diameter portion 34A, and the portion of the second base member 34 facing away from the first base member 32 is a large-diameter portion 34B having a larger outer diameter than the small-diameter portion 34A. As a result, a step having a difference in height in the radial direction of the small-diameter portion 34A and the large-diameter portion 34B is formed at the boundary between the small-diameter portion 34A and the large-diameter portion 34B. A through-hole 34C is formed in the center, which is the inner periphery of the small-diameter portion 34A and the large-diameter portion 34B, penetrating from the small-diameter portion 34A side to the large-diameter portion 34B side (penetrating in the axial direction of the small-diameter portion 34A and the large-diameter portion 34B). The inner diameter of the through-hole 34C on the small-diameter portion 34A side is constant. The inner diameter of the through hole 34C on the large diameter portion 34B side gradually increases toward the opposite side from the small diameter portion 34A. As a result, the inner surface of the through hole 34C on the large diameter portion 34B side forms a funnel-shaped tapered surface 34D. On the opposite side of the large diameter portion 34B from the small diameter portion 34A, multiple (four in this embodiment) guide grooves 34E are formed, extending from the through hole 34C side toward the outer periphery of the large diameter portion 34B. Each of the multiple guide grooves 34E is formed as a rectangular groove that is open on the side opposite the small diameter portion 34A, and is arranged at intervals along the circumferential direction of the large diameter portion 34B. The second base member 34 also includes multiple (three in this embodiment) locking claws 34F that protrude from around the through hole 34C in the small diameter portion 34A toward the opposite side from the large diameter portion 34B. The multiple locking claws 34F are arranged at intervals along the circumferential direction of the small diameter portion 34A. The first base member 32 and the second base member 34 are connected together by engaging the multiple locking claws 34F with the locking holes 32E of the first base member 32. In addition, when the first base member 32 and the second base member 34 are connected together, the through hole 32C of the first base member 32 and the through hole 34C of the second base member 34 are connected together.

[0028] The winding member 36 includes a first cylindrical portion 36A disposed along the outer peripheral surface of the small-diameter portion 32A of the first base member 32 and the outer peripheral surface of the small-diameter portion 34A of the second base member 34, a second cylindrical portion 36B disposed along the outer peripheral surface of the large-diameter portion 32B of the first base member 32, and a connecting portion 36C connecting the first cylindrical portion 36A and the second cylindrical portion 36B. The winding member 36 also includes a string locking portion 36D protruding radially outward from the first cylindrical portion 36A. This string locking portion 36D can lock a portion of the locking string 30 (see FIG. 1 ). The winding member 36 described above is sandwiched between the first base member 32 and the second base member 34 and supported by the first base member 32 and the second base member 34. Furthermore, the winding member 36 is rotatable with respect to the first base member 32 and the second base member 34.

[0029] As shown in FIGS. 1 to 5 , one side portion 30A of the locking cord 30 is routed toward the rear side of the connecting frame portion 24 through a through-hole (not shown) formed in the connecting frame portion 24 of the back frame 14. One side portion 30A of the locking cord 30 routed toward the rear side of the connecting frame portion 24 is passed through the through-holes 32C and 34C of the cord locking member 20 from the through-hole 32C side and pulled out from the through-hole 34C side. Next, the multiple boss portions 32F of the cord locking member 20 are fitted into multiple holes (not shown) formed in the connecting frame portion 24. Next, one side portion 30A of the locking cord 30 pulled out from the through-hole 34C side is routed toward the first tubular portion 36A through the guide groove 34E and wound around the first tubular portion 36A while maintaining tension on one side portion 30A of the locking cord 30. Then, a portion of the portion 30A on one side of the locking cord 30 is locked to the cord locking portion 36D. As a result, the cord locking member 20 is attached to the connecting frame portion 24, and the portion 30A on one side of the locking cord 30 is locked to the cord locking member 20. Note that the portion 30B on the other side of the locking cord 30 is also locked to the cord locking member 20 in the same procedure as the portion 30A on one side.

[0030] (Actions and Effects of This Embodiment) Next, the operation and effects of this embodiment will be described.

[0031] In the vehicle seat 10 of the present embodiment described above, the cord locking member 20 is attached to the connection frame portion 24 through the above-described procedure. The locking cord 30 of the back trim 18 is locked to the cord locking member 20 in a state where it is pulled out from the through-hole 34C side through the through-holes 32C and 34C formed in the cord locking member 20. The cord locking member 20 is pressed toward the connection frame portion 24 by the tension generated in the locking cord 30. This configuration eliminates the need for a claw or the like to maintain the cord locking member 20 attached to the connection frame portion 24. When the locking cord 30 is detached from the cord locking member 20, the tension in the locking cord 30 is released, and the force pressing the cord locking member 20 toward the connection frame portion 24 is no longer present. This allows the cord locking member 20 to be easily removed from the connection frame portion 24. In this manner, this embodiment makes it easy to disassemble the vehicle seat 10.

[0032] In this embodiment, the cord locking member 20 is formed with a guide groove 34E extending from the through hole 34C toward the outer periphery of the large diameter portion 34B. The cord 30 is drawn out through the through hole 34C, routed through the guide groove 34E toward the first tubular portion 36A, and wound around the first tubular portion 36A. With this configuration, the portion of the cord 30 positioned in the guide groove 34E can be prevented or suppressed from shifting when the cord 30 is wound around the first tubular portion 36A.

[0033] Furthermore, in this embodiment, the multiple boss portions 32F formed on the string locking member 20 in the above arrangement are each fitted into holes formed in the connecting frame portion 24. With this configuration, when winding the locking string 30 around the first cylindrical portion 36A, it is possible to prevent or suppress the string locking member 20 from shifting relative to the connecting frame portion 24. Here, as shown in Figure 7, a retaining portion 38 can also be provided on the boss portion 32F to maintain the state in which the boss portion 32F is fitted into the hole formed in the connecting frame portion 24. As an example, this retaining portion 38 is formed in a hemispherical shape that protrudes radially outward from the tip side in the protruding direction of the boss portion 32F.

[0034] Furthermore, in this embodiment, the cord locking member 20 has a divided structure consisting of a winding member 36 and a first base member 32 and a second base member 34 that sandwich the winding member 36. With this configuration, a cord locking member 20 with a more complex shape can be realized compared to a cord locking member composed of a single part. In addition, by rotating the winding member 36 relative to the first base member 32 and the second base member 34, the locking cord 30 can be wound onto the winding member 36.

[0035] In this embodiment, an example has been described in which the string-locking member 20 is provided with multiple boss portions 32F that fit into the connecting frame portion 24, but the present invention is not limited to this. Whether or not to provide multiple boss portions 32F can be determined appropriately by considering the shape of the part of the connecting frame portion 24 to which the string-locking member 20 is attached.

[0036] In addition, in the present embodiment, an example has been described in which the locking cord 30 drawn out through the through-hole 34C is routed through the guide groove 34E toward the first tubular portion 36A, but the present invention is not limited to this. Whether or not to provide the guide groove 34E can be determined appropriately in consideration of the routing path of the locking cord 30, etc.

[0037] The structure of this embodiment can also be applied to the seat cushion side.

[0038] The above describes one embodiment of the present invention, but the present invention is not limited to the above, and it goes without saying that it can be implemented in various other modified forms within the scope of the gist of the present invention. [Explanation of symbols]

[0039] 10 Vehicle seats 14. Back frame (internal structure) 16 Back pads (pads) 18. Back trim (seat cover) 20 String fastening member 26 Trim body (cover body) 30. Locking cord 32C through hole 32F Boss Section 34C through hole 34E Guide groove

Claims

1. a seat cover including a cover body that covers a pad supported by an internal structure of a vehicle seat and a fastening string that extends from the cover body; a string locking member attached to the internal structure, with a through hole formed in its inner periphery, to which the string is locked when the string is pulled from the cover body side through the through hole to the opposite side of the cover body, and which is pressed toward the internal structure side by tension generated in the string; A seat cover mounting structure comprising:

2. The cord locking member has a guide groove formed therein, the guide groove extending from the through hole toward the outer periphery of the cord locking member, 2. The seat cover mounting structure according to claim 1, wherein the locking cord pulled out through the through hole is routed through the guide groove toward the outer periphery of the cord locking member and wrapped around the outer periphery of the cord locking member.

3. a plurality of bosses are formed on the internal structure side of the cord locking member, the bosses protruding toward the internal structure side and arranged at intervals in a direction in which the locking cord is wound around an outer periphery of the cord locking member; 3. The seat cover mounting structure according to claim 2, wherein each of the boss portions is fitted into the internal structure.

4. 4. The seat cover mounting structure according to claim 3, wherein the boss portion is provided with a retaining portion for maintaining the boss portion fitted in the internal structure.

5. The cord locking member has a divided structure including a winding member around which the locking cord is wound, and a first base member and a second base member that sandwich the winding member, 2. The seat cover mounting structure according to claim 1, wherein the wrapping member is rotatable relative to the first base member and the second base member.

6. The internal structure and a pad supported by the internal structure; a seat cover having a cover body that covers the pad and a fastening string that extends from the cover body; a string locking member attached to the internal structure and to which the seat cover mounting structure according to claim 1 is applied; A vehicle seat comprising:

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