Cover fastener and seat cover

Abstract

To provide a cover hooking tool capable of reducing stress concentration at a joint portion with a cover skin.SOLUTION: Provided is a cover hooking tool 20 for hooking and fixing a cover skin 10 of a cushion cover 3C to a cushion frame 3F. The hooking tool includes: a first member 21 having a covering portion 21A on which the cover skin 10 can be folded over; and a second member 22 having a hook portion 22A that can be hooked onto a cushion frame 3F and a clamping portion 22B that can sandwich the covering portion 21A together with the cover skin 10 that is folded over. The first member 21 and the clamping portion 22B are formed with pressing parts (a pressing claw 21D and a locking claw 3B) that press each other so as to sandwich the cover skin 10 between each other by tension of the cover skin 10 being pulled from the hook portion 22A, respectively.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a cover fastener and a seat cover, and more particularly to a cover fastener for hooking and fixing a cover skin to a seat frame, and a seat cover. [Background technology]

[0002] Patent Document 1 discloses a hooking structure for fixing an end of a seat cover to a seat frame. Specifically, the seat cover is fixed to the seat frame by connecting a resin J-hook to the end of the cover skin and hooking the J-hook onto the seat frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-137837 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional technology, the J hook is attached to the cover surface by stitching. Therefore, when a strong tension is applied to the seat cover, stress is concentrated at the stitching portion of the cover surface and the J hook, which is prone to breakage. Therefore, the present invention provides a cover fastener and a seat cover that can reduce stress concentration at the joint with the cover surface. [Means for solving the problem]

[0005] As a means for solving the above problems, the cover fastener and seat cover of the present invention employ the following means.

[0006] In other words, the first invention of the present invention is a cover fastener for hooking and fixing the cover skin of a seat cover to a seat frame, comprising: a first member having a covering portion that can be folded over the cover skin; and a second member having a hooking portion that can be hooked onto the seat frame and a clamping portion that can clamp the cover portion together with the cover skin that is folded over in a U-shaped clamping shape that follows the folded over shape of the cover skin, and the first member and the clamping portion each have a pressing portion that presses against each other to clamp the cover skin between them due to the tension applied when the cover skin is pulled from the hooking portion.

[0007] According to the first aspect of the present invention, the cover skin, which receives tension from the hook portion, can be locked by being sandwiched between the pressing portions of the cover fasteners that press against each other due to this tension. Therefore, the tensile stress on the cover skin can be more widely distributed than in a configuration in which the cover fasteners are joined to the cover skin by sewing.

[0008] A second aspect of the present invention is the cover fastener according to the first aspect, wherein the covering portion is formed with an insertion claw that can be inserted into a hole formed in a folded portion of the cover skin.

[0009] According to the second aspect of the present invention, the cover fastener can be properly positioned relative to the cover surface and can be firmly fastened to prevent it from coming off.

[0010] A third aspect of the present invention is the cover fastener according to the second aspect, wherein the insertion claw is fitted into the hole so that movement of the insertion claw in a direction along the folded portion is restricted.

[0011] According to the third aspect of the present invention, the cover fastener can be coupled to the cover surface in a state where it is more appropriately positioned relative to the cover skin.

[0012] The fourth invention of the present invention is a cover fastener according to any one of the first to third inventions, wherein the first member and the clamping portion are each formed with a locking claw that engages with each other to prevent them from coming out when the covering portion is inserted into the clamping portion through a U-shaped opening together with the cover skin that is folded over to cover the covering portion, and the first member is formed with a pressing claw that is pressed against the locking claw of the clamping portion by the tension applied by the hook portion to press the cover skin in the direction of being further inserted into the clamping portion, and each of the pressing areas is formed by the pressing claw and the locking claw of the clamping portion.

[0013] According to the fourth aspect of the present invention, by utilizing the configuration of the locking claws of the clamping portion of the second member, it is possible to rationally configure each pressing portion that clamps and locks the cover skin.

[0014] The fifth invention of the present invention is a cover fastener according to any one of the first to third inventions, wherein the first member and the clamping portion are each formed with a locking claw that engages with each other to prevent them from coming loose by inserting the covering portion together with the cover skin that is folded over and placed over the clamping portion through a U-shaped opening, and each of the locking claws forms each of the pressing areas.

[0015] According to the fifth invention, by utilizing the configuration of each locking claw for inserting and locking the first member into the clamping portion of the second member, each pressing portion for clamping and locking the cover skin can be rationally configured.

[0016] A sixth aspect of the present invention is the cover fastener according to the fifth aspect, wherein the locking claws are barbed so as to engage with each other so as to be prevented from coming off.

[0017] According to the sixth aspect of the present invention, the cover fastener can be more strongly coupled to the cover surface.

[0018] The seventh invention of the present invention is a cover fastener according to any one of the first to third inventions, further comprising an integral hinge that connects the first member and the second member so that they can move relative to each other by being integrally molded.

[0019] According to the seventh aspect of the present invention, the first member and the second member can be managed as a single component. Furthermore, after the first member is sandwiched between the clamping portions of the second member, the first member can be appropriately prevented from sliding sideways along the clamping portions.

[0020] An eighth aspect of the present invention is a seat cover having a planar cover skin and a cover hook that is connected to the cover skin and hooked onto a seat frame, wherein the cover hook is: A seat cover comprising: a first member having a covering portion that can be folded over to cover the cover skin; and a second member having a hooking portion that can be hooked onto the seat frame and a clamping portion that can clamp the covering portion together with the cover skin that is folded over in a U-shaped clamping shape that follows the folded shape of the cover skin, wherein the first member and the clamping portion each have a pressing portion that presses against each other to clamp the cover skin between them due to the tension applied to the cover skin by the hooking portion.

[0021] According to the eighth aspect of the present invention, the cover skin, which receives tension from the hook portion, can be locked by being sandwiched between the pressing portions of the cover fasteners that are pressed against each other by this tension. Therefore, the tensile stress acting on the cover skin can be more widely distributed than in a configuration in which the cover fasteners are joined to the cover skin by sewing. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a perspective view showing the configuration of a seat to which a seat cover equipped with a cover fastener according to a first embodiment is applied. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3]FIG. 3 is an enlarged perspective view of an end structure of the seat cover corresponding to FIG. 2. [Figure 4] FIG. 10 is a perspective view showing an initial state before the cover fastener is joined to the cover surface. [Figure 5] 10 is a side view showing a state in which the insertion claws of the first member are inserted into the holes in the cover skin. FIG. [Figure 6] 10 is a side view showing a state in which the second member is turned over and the first member is inserted into the clamping portion. FIG. [Figure 7] FIG. 10 is a side view showing a state in which the first member is inserted into the clamping portion. [Figure 8] FIG. 10 is an enlarged side view of a main part of the cover fastener after assembly. [Figure 9] FIG. 4 is an enlarged perspective view corresponding to FIG. 3, illustrating a schematic configuration of a seat cover provided with a cover fastener according to a second embodiment. [Figure 10] FIG. 2 is an enlarged side view of a main part of the cover fastener. [Figure 11] 10 is a cross-sectional view showing a state in which a clamping portion is deformed due to tension applied to the seat cover. FIG. [Figure 12] FIG. 10 is an enlarged perspective view corresponding to FIG. 3, illustrating a schematic configuration of a seat cover provided with a cover fastener according to a third embodiment. [Figure 13] FIG. 2 is an enlarged side view of a main part of the cover fastener. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0024] (First embodiment) First, the configuration of a seat cover (cushion cover 3C) equipped with a cover fastener 20 according to a first embodiment of the present invention will be described with reference to Figures 1 to 8. In the following description, when directions such as front, back, up, down, left, and right are indicated, they refer to the respective directions shown in the respective figures. Furthermore, when the term "seat width direction" is used, it refers to the left-right direction of the seat 1, which will be described later. Furthermore, in the following description, when no specific reference figure is indicated or when no reference figure has a corresponding symbol, any of Figures 1 to 8 will be referenced as appropriate.

[0025] As shown in Fig. 1, a seat cover (cushion cover 3C) equipped with a cover fastener 20 according to this embodiment is applied to a seat 1 that constitutes the right-hand seat of an automobile. Specifically, the seat 1 comprises a seat back 2 that forms the backrest for a seated occupant, and a seat cushion 3 that forms the seating portion.

[0026] Although not specifically shown in the drawings, the seat cushion 3 has a metal cushion frame 3F (seat frame) that forms the internal framework and a urethane foam cushion pad 3P that forms the cushion portion. The seat cushion 3 also has a fabric cushion cover 3C (seat cover) that covers the entire surface. The cushion cover 3C may be made of leather material such as synthetic leather or natural leather.

[0027] The cushion cover 3C is placed over the entire surface of the seat cushion 3, and then the front, rear, left, and right edges of the cushion cover 3C are pulled downward and hooked onto the cushion frame 3F. As a result, the cushion cover 3C is stretched over the entire surface of the seat cushion 3, with the cushion pad 3P covering the cushion cover 3C pressed against the cushion frame 3F.

[0028] Specifically, as shown in Fig. 2, the cushion cover 3C has a resin cover fastener 20 attached to each peripheral edge of a planar cover skin 10 that forms the cover body. Each cover fastener 20 is hooked onto the cushion frame 3F from below, so that each peripheral edge of the cushion cover 3C is fastened to the cushion frame 3F.

[0029] As described above, the cushion cover 3C has the cover skin 10 made of a planar fabric member and the resin cover fastener 20 joined to the periphery of the cover skin 10 and hooked onto the cushion frame 3F. The cover fastener 20 is not joined to the cover skin 10 by sewing, but is joined by sandwiching the cover skin 10 between its constituent members (the first member 21 and the second member 22).

[0030] The cover fastener 20 and the assembly structure of the cover skin 10 to the cover fastener 20 will be described in detail below. As shown in Figures 3 and 4, the cover fastener 20 is made up of a first member 21 and a second member 22 made of resin, and an integral hinge 23A that connects these members so that they can move relative to each other. The first member 21, the second member 22, and the integral hinge 23A are integrally molded by injection molding and configured as a single, continuous part.

[0031] As shown in Fig. 4, the cover fastener 20 has a long plate-like shape, with the exception of insertion claws 21B, which will be described later, and extends at a constant cross section along the periphery of the cover skin 10. Specifically, as shown in Figs. 4 and 5, the first member 21 has a covering portion 21A formed at one end in the short direction of the long plate, which can be folded back and covered with the cover skin 10 along the end.

[0032] The covering portion 21A has arrowhead-shaped insertion claws 21B formed at various longitudinal locations on the end surface where the folded portion 13 of the cover skin 10 is covered. The insertion claws 21B are aligned at equal intervals in the longitudinal direction. Each insertion claw 21B is inserted into a corresponding hole 13A formed in the folded portion 13 of the cover skin 10 at a corresponding location.

[0033] Each hole 13A has an elongated hole shape that fits with a cylindrical portion at the base end of each insertion claw 21B without a gap, rather than the arrowhead portion at the tip end. Each insertion claw 21B is inserted into each hole 13A while elastically expanding the diameter of each hole 13A by inserting the arrowhead portion at the tip end of each insertion claw 21B.

[0034] By the above insertion, each of the insertion claws 21B is assembled in a state in which each of the holes 13A is fitted into the cylindrical portion on the base side of each of the insertion claws 21B. As a result, the first member 21 is assembled in a state in which it is positioned relative to the cover skin 10 and is prevented from coming off.

[0035] A locking claw 21C that protrudes obliquely in the thickness direction is formed in the middle part in the short side direction of the first member 21. Furthermore, a pressing claw 21D that protrudes in the thickness direction, which is the same direction as the protruding direction of the locking claw 21C, is formed in the other end part in the short side direction of the first member 21.

[0036] The second member 22 is configured such that a hook portion 22A curved in a J-shaped cross section is formed at one end in the short side direction of the long plate, so that the hook portion 22A can be hooked onto the cushion frame 3F described above in Fig. 2. The second member 22 is also configured such that a clamping portion 22B having a U-shaped cross section is formed at the other end in the short side direction.

[0037] 6 to 8, the clamping portion 22B is configured to be able to hold the covering portion 21A of the first member 21 together with the cover skin 10 in a clamped state by inserting it through its U-shaped opening A. Specifically, the clamping portion 22B has a top plate B1 that extends from the hook portion 22A in the shape of a flush plate continuing from the hook portion 22A, and a clamping piece B2 that extends in the plate thickness direction from the other end of the top plate B1 in the short side direction toward one end of the short side direction with an L-shaped cross section, and is configured to form a clamping shape with a U-shaped cross section.

[0038] A locking claw B3 is formed at the tip of the clamping piece B2 facing the opening A, protruding in a manner that narrows the opening A toward the top plate B1. The width of the opening A between the locking claw B3 and the top plate B1 is set to be wider by approximately the thickness of the cover skin 10 than the thickness of the flat portion of the first member 21 other than the portions where the locking claw 21C and the pressing claw 21D are formed. In addition, the dimension between the flat portion of the clamping piece B2 other than the portion where the locking claw B3 is formed and the top plate B1 is set to be wider by approximately the thickness of the cover skin 10 than the thickness of the portion of the first member 21 where the locking claw 21C is formed.

[0039] 6 and 7, the second member 22 is configured so that the covering portion 21A of the first member 21 together with the cover skin 10 can be inserted into the clamping portion 22B of the second member 22 through the U-shaped opening A, thereby latching the first member 21 in a locked state. Specifically, the first member 21 is pressed from the rear side by the pressing claws 21D using a plate-shaped pressing jig T, so that the covering portion 21A together with the cover skin 10 is inserted into the clamping portion 22B of the second member 22.

[0040] At this time, the first member 21 is inserted to a position where its locking claw 21C passes over the locking claw B3 of the clamping portion 22B of the second member 22 in the insertion direction while its locking claw 21C is pressed against the locking claw B3 of the clamping portion 22B, deforming the clamping piece B2 downward in the illustration. As a result, the first member 21 is prevented from coming off in the opposite direction to the insertion direction from the clamping portion 22B of the second member 22 by the mutual engagement of the locking claws 21C and B3. The locking claws 21C and B3 are formed with a hook-like barb so that they can apply a strong retaining force to each other.

[0041] By assembling as described above, the first member 21 and the second member 22 are held in a state in which the cover skin 10 is sandwiched and passed between them. The specific passing structure of the cover skin 10 will be described in detail later.

[0042] 4 and 5, integral hinge 23A is configured to connect, with a thin plate shape, between the end face of the other end in the short direction of first member 21 (the end face on the side where pressing claw 21D is formed) and the outer surface of the U-shaped connecting portion of clamping portion 22B of second member 22. As a result, as shown in Figs. 5 to 7, integral hinge 23A is configured to connect first member 21 and second member 22 so that they can freely move and rotate in directions that bring them closer to or separate from each other, as they flex.

[0043] The integral hinge 23A is shaped to connect the first member 21 and the second member 22 with a long thin plate in the longitudinal direction thereof, and is configured to appropriately prevent the first member 21 from sliding sideways along the clamping portion 22B when the first member 21 is clamped between the clamping portion 22B of the second member 22.

[0044] 6, integral hinge 23A has a circumferential length that allows the first member 21 to be in a relaxed state without tension between first member 21 and second member 22, even when first member 21 is set so that it abuts top board B1 from below in the figure at a position away from U-shaped opening A of clamping portion 22B of second member 22 when covering portion 21A of first member 21 is inserted into clamping portion 22B of second member 22. Therefore, as shown in FIGS. 6 and 7, the operation of inserting covering portion 21A of first member 21 into clamping portion 22B of second member 22 can be easily performed.

[0045] As shown in Fig. 5, the insertion claws 21B of the first member 21 are inserted into the holes 13A of the cover skin 10, and then, as shown in Figs. 6 and 7, the first member 21 is inserted into and latched onto the clamping portions 22B of the second member 22, so that the folded-back portions 13 are set in a state where they are inserted inside the clamping portions 22B. Accordingly, the portion of the cover skin 10 extending from the folded-back portions 13 toward the stretched portions 12 that are placed over the seat cushion 3 (see Fig. 1) passes between the covering portion 21A of the first member 21 and the top plate B1 of the second member 22 and is pulled out to the outside through the U-shaped opening A.

[0046] Furthermore, the portion of the cover skin 10 extending from the folded portion 13 toward the terminal 11 passes between the covering portion 21A of the first member 21 and the clamping piece B2 of the second member 22 and is pulled out to the outside through the U-shaped opening A. More specifically, the portion of the cover skin 10 extending from the folded portion 13 toward the terminal 11 is covered by the locking claw 21C of the first member 21 protruding downward in the figure and the locking claw B3 protruding upward in the figure from the clamping piece B2 of the second member 22, and passes between them in a zigzag pattern before being pulled out to the outside through the U-shaped opening A.

[0047] As a result, the portion of the cover skin 10 extending from the folded portion 13 toward the terminal 11 passes between the locking claws 21C of the first member 21 and the locking claws B3 of the second member 22 that protrude alternately, is valley-folded from the folded portion 13, and then mountain-folded, and is then unfolded to the outside through the U-shaped opening A. After the above assembly, as shown in Fig. 2, the cover skin 10 is stretched over the surface of the seat cushion 3 so that the tensioning portion 12 is pulled in a direction away from the hook portion 22A of the second member 22.

[0048] At this time, the cover skin 10 is folded back so that its end 11 overlaps the outer surface of the clamping piece B2, and is set so as to be sandwiched between the stretching part 12 and the clamping piece B2. With the above configuration, when the cover skin 10 is stretched, the cover hooking device 20 is subjected to tension that is pulled upward in the figure by the stretching part 12 of the cover skin 10, with the hooking part 22A hooked on the cushion frame 3F as a fulcrum.

[0049] 8, the cover fastener 20 receives an acting force from the tensioning portion 12 such that the first member 21 is pulled to the right in the figure. As a result, the pressing claw 21D of the first member 21 is pressed against the locking claw B3 of the second member 22 from the left in the figure, with the cover skin 10 (the portion extending from the folded portion 13 toward the terminal 11) sandwiched therebetween.

[0050] As a result of the above action, the cover fastener 20 strongly prevents the terminal 11 from coming off, due to the action of the tensioning portion 12 of the cover skin 10 pressing and clamping the terminal 11 between it and the clamping piece B2 to lock the movement, and the action of the pressing claw 21D of the first member 21 pressing and clamping the cover skin 10 (the portion extending from the folded portion 13 towards the terminal 11) between it and the locking claw B3 of the second member 22 to lock the movement.

[0051] At this time, the force by which the tensioning portion 12 of the cover skin 10 pinches the end 11 between itself and the clamping piece B2 to lock the movement is applied widely in a planar or linear manner over the entire longitudinal area along the end 11 of the cover skin 10. In addition, the force by which the pressing claw 21D of the first member 21 pinches the cover skin 10 (the portion extending from the folded portion 13 toward the end 11) between itself and the locking claw B3 of the second member 22 to lock the movement is also applied widely in a planar or linear manner over the entire longitudinal area of ​​the cover skin 10.

[0052] Therefore, even if a strong tension is applied from the tensioned portion 12 of the cover skin 10, localized stress concentration is unlikely to occur in each portion to which the locking force is applied, and breakage is unlikely to occur. Here, the pressing claw 21D of the first member 21 and the locking claw B3 of the second member 22 against which the pressing claw 21D is pressed each correspond to the "pressing portion" of the present invention.

[0053] Therefore, even if the cover skin 10 is made of a material with relatively low tear strength, such as a low-basis-weight fabric or nonwoven fabric, or a thin film-like resin (polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), olefin-based thermoplastic elastomer (TPO), etc.), the cover skin 10 can be properly stretched over the seat cushion 3 using the cover fastener 20.

[0054] Furthermore, when removing the cover skin 10 from the cover fastener 20, it can be easily removed by simply opening the clamping portion 22B of the second member 22 and pulling out the first member 21. Therefore, compared to a configuration in which the cover skin 10 is integrally joined to the cover fastener 20 by sewing, they can be easily disassembled and recycled.

[0055] Furthermore, the positioning of these components can be easily performed by inserting the cover fastener 20 into the hole 13A provided in the cover skin 10. Therefore, the assembling work can be easily performed without requiring advanced sewing skills.

[0056] To summarize the above, the cover fastener 20 and cushion cover 3C according to this embodiment have the following configurations: Note that the reference numerals in parentheses below correspond to the respective components shown in the above embodiment.

[0057] That is, the cover fastener (20) is a fastener for hooking and fixing the cover skin (10) of the seat cover (3C) to the seat frame (3F). The cover fastener (20) has a first member (21) having a covering portion (21A) that can be folded over the cover skin (10), and a second member (22) having a hooking portion (22A) that can be hooked over the seat frame (3F) and a clamping portion (22B) that can clamp the covering portion (21A) together with the cover skin (10) that is to be folded over in a U-shaped clamping shape that follows the folded over shape of the cover skin (10).

[0058] The first member (21) and the clamping portion (22B) each have pressing portions (21D, B3) where the cover upholstery (10) is pressed against each other by the tension of the cover upholstery (10) pulled by the hook portion (22A) to sandwich the cover upholstery (10) between them. According to the above configuration, the cover upholstery (10) that receives tension from the hook portion (22A) can be sandwiched and locked between the pressing portions (21D, B3) of the cover fastener (20) that press against each other by this tension. Therefore, the tensile stress acting on the cover upholstery (10) can be more widely distributed than in a configuration in which the cover fastener (20) is joined to the cover upholstery (10) by sewing.

[0059] In addition, the covering portion (21A) is formed with an insertion claw (21B) that can be inserted into a hole (13A) formed in the folded portion (13) of the cover skin (10). According to the above configuration, the cover fastener (20) can be properly positioned relative to the cover skin (10) and can be firmly connected to prevent it from coming off.

[0060] Furthermore, the insertion claws (21B) are fitted into the holes (13A) so as to restrict movement in the direction along the folded portion (13). According to the above configuration, the cover fastener (20) can be coupled to the cover skin (10) in a state where it is more appropriately positioned.

[0061] In addition, the first member (21) and the clamping portion (22B) are each formed with locking claws (21C, B3) that engage with each other to prevent them from coming out when the covering portion (21A) is inserted into the clamping portion (22B) through the U-shaped opening together with the cover skin (10) that is folded over. The first member (21) is formed with a pressing claw (21D) that is pressed against the locking claw (B3) of the clamping portion (22B) when the cover skin (10) is pressed in a direction to be further inserted into the clamping portion (22B) by the tension applied by the hook portion (22A). The pressing claw (21D) and the locking claw (B3) of the clamping portion (22B) form each pressing portion (21D, B3).

[0062] According to the above configuration, by utilizing the configuration of the locking claw (B3) of the clamping portion (22B) of the second member (22), it is possible to rationally configure each pressing portion (21D, B3) that clamps and locks the cover skin (10).

[0063] The cover fastener (20) further includes an integral hinge (23A) that connects the first member (21) and the second member (22) so that they can move relative to each other through integral molding. This configuration allows the first member (21) and the second member (22) to be managed as a single component. Furthermore, after the first member (21) is clamped between the clamping portions (22B) of the second member (22), the first member (21) can be appropriately prevented from sliding sideways along the clamping portions (22B).

[0064] The seat cover (3C) also includes a planar cover skin (10) and a cover hook (20) joined to the cover skin (10) and hooked onto the seat frame (3F). The cover hook (20) includes a first member (21) having a covering portion (21A) that can be folded over the cover skin (10), and a second member (22) having a hooking portion (22A) that can be hooked onto the seat frame (3F) and a clamping portion (22B) that can clamp the covering portion (21A) together with the cover skin (10) that is to be folded over in a U-shaped clamping shape that follows the folded over shape of the cover skin (10).

[0065] The first member (21) and the clamping portion (22B) each have pressing portions (21D, B3) where the cover upholstery (10) is pressed against each other by the tension of the cover upholstery (10) pulled by the hook portion (22A) to sandwich the cover upholstery (10) between them. According to the above configuration, the cover upholstery (10) that receives tension from the hook portion (22A) can be sandwiched and locked between the pressing portions (21D, B3) of the cover fastener (20) that press against each other by this tension. Therefore, the tensile stress acting on the cover upholstery (10) can be more widely distributed than in a configuration in which the cover fastener (20) is joined to the cover upholstery (10) by sewing.

[0066] (Second embodiment) Next, the configuration of a seat cover (cushion cover 3C) equipped with a cover fastener 20 according to a second embodiment of the present invention will be described with reference to Figures 9 to 11. As shown in Figure 9, in the cushion cover 3C equipped with the cover fastener 20 according to this embodiment, the cover skin 10 is assembled to the cover fastener 20 as follows.

[0067] That is, the portion of the cover skin 10 extending from the folded portion 13 toward the terminal 11 passes between the covering portion 21A of the first member 21 and the top plate B1 of the second member 22 and is unwound from the U-shaped opening A to the outside. Also, the portion of the cover skin 10 extending from the folded portion 13 toward the stretched portion 12 that covers the seat cushion 3 (see FIG. 1) passes between the covering portion 21A of the first member 21 and the clamping piece B2 of the second member 22 and is unwound from the U-shaped opening A to the outside.

[0068] In detail, as shown in Figure 10, the portion of the cover skin 10 extending from the folded portion 13 toward the tensioning portion 12 is covered by a locking claw 21C protruding downward in the figure of the first member 21 and a locking claw B3 protruding upward in the figure from the clamping piece B2 of the second member 22, and passes between them in a zigzag pattern before being extended to the outside through the U-shaped opening A.

[0069] As a result, the portion of the cover skin 10 extending from the folded portion 13 toward the tensioned portion 12 passes between the locking claws 21C of the first member 21 and the locking claws B3 of the second member 22 that protrude alternately, is valley-folded from the folded portion 13, and then mountain-folded, and is then unfolded to the outside through the U-shaped opening A. After the above assembly, the cover skin 10 is tensioned on the surface of the seat cushion 3 so that the tensioned portion 12 is pulled in a direction away from the hook portion 22A of the second member 22 (see FIG. 1).

[0070] With the above configuration, as shown in Fig. 9, when the cover skin 10 is stretched, the cover hook 20 is subjected to tension pulled upward in the figure by the stretched portion 12 of the cover skin 10, with the hook portion 22A hooked on the cushion frame 3F as a fulcrum. As a result, as shown in Fig. 10, the cover hook 20 is subjected to a force by the stretched portion 12 that pulls the first member 21 to the left in the figure. As a result, the locking claw 21C of the first member 21 is pressed against the locking claw B3 of the second member 22 from the right in the figure, with the cover skin 10 (the portion extending from the folded portion 13 toward the stretched portion 12) sandwiched therebetween.

[0071] By the above action, the cover hook 20 is brought into a state in which removal of the terminal 11 is strongly prevented by the action of the locking claw 21C of the first member 21 pressing and pinching the cover skin 10 (the portion extending from the folded portion 13 toward the tensioned portion 12) between the locking claw B3 of the second member 22 to lock the movement. At this time, the acting force that presses and pinches the cover skin 10 (the portion extending from the folded portion 13 toward the tensioned portion 12) between the locking claws 21C and B3 to lock the movement is applied widely in a planar or linear manner over the entire longitudinal area of ​​the cover skin 10.

[0072] Therefore, localized stress concentration and breakage are unlikely to occur on the cover skin 10. Here, each of the locking claws 21C, B3 corresponds to the "pressing portion" of the present invention.

[0073] However, in the configuration of this embodiment, the clamping piece B2 of the second member 22 receives a force in a direction that opens it from the top plate B1 due to the tension applied from the tensioning portion 12 of the cover skin 10. Therefore, as shown in Fig. 11, when excessive tension is applied from the tensioning portion 12 of the cover skin 10, the clamping piece B2 of the second member 22 deforms so as to open it from the top plate B1, which makes it easier for the first member 21 to slip out of the opening A of the clamping portion 22B to the left in the figure.

[0074] 9, in this embodiment, the assembly of the cover skin 10 is different from that shown in the first embodiment, and accordingly, the integral hinge 23B is positioned as follows: That is, the integral hinge 23B is configured to connect the end face of the other short end of the first member 21 (the end on the side where the pressing claw 21D is formed) to the inner surface of the top plate B1 extending outward from the U-shape of the clamping portion 22B of the second member 22 in a thin plate shape. Even with this configuration, the integral hinge 23B can bend and freely move and rotate the first member 21 and the second member 22 in directions that bring them closer to or farther away from each other.

[0075] The configuration other than the above is substantially the same as the configuration shown in the first embodiment, so the same components as those shown in the first embodiment will be denoted by the same reference numerals and detailed description thereof will be omitted.

[0076] To summarize the above, the cover fastener and cushion cover 3C according to this embodiment have the following configuration: Note that the reference numerals in parentheses below correspond to the respective components shown in the above embodiment.

[0077] That is, the first member (21) and the clamping portion (22B) are each formed with locking claws (21C, B3) that engage with each other to prevent disengagement when the covering portion (21A) is inserted into the clamping portion (22B) through the U-shaped opening together with the cover skin (10) that is folded over. Each locking claw (21C, B3) forms each pressing portion (21C, B3). According to the above configuration, by utilizing the configuration of each locking claw (21C, B3) for inserting and locking the first member (21) into the clamping portion (22B) of the second member, each pressing portion (21C, B3) that clamps and locks the cover skin (10) can be rationally configured.

[0078] In addition, the locking claws (21C, B3) are formed with barbs that engage with each other so as to be able to prevent disengagement. According to the above configuration, the cover fastener can be more firmly connected to the cover skin (10).

[0079] (Third embodiment) Next, the configuration of a seat cover (cushion cover 3C) equipped with a cover fastener 20 according to a third embodiment of the present invention will be described with reference to Figures 12 and 13. As shown in Figure 12, in the cushion cover 3C equipped with the cover fastener 20 according to this embodiment, the shape of the second member 22 and the assembly of the cover skin 10 to the cover fastener 20 are as follows.

[0080] That is, the second member 22 is configured such that the hook portion 22A, which is curved with a J-shaped cross section and hooked onto the cushion frame 3F, extends from the top plate B1 of the clamping portion 22B to the side opposite to the side where the U-shaped opening A is formed. Also, the portion of the cover skin 10 that extends from the folded portion 13 toward the stretched portion 12 that covers the seat cushion 3 (see FIG. 1) passes between the covering portion 21A of the first member 21 and the top plate B1 of the second member 22 and is pulled out from the U-shaped opening A to the outside.

[0081] Furthermore, the portion of the cover skin 10 extending from the folded portion 13 toward the terminal 11 passes between the covering portion 21A of the first member 21 and the clamping piece B2 of the second member 22 and is pulled out to the outside through the U-shaped opening A. More specifically, as shown in Fig. 13, the portion of the cover skin 10 extending from the folded portion 13 toward the terminal 11 is covered by the locking claw 21C protruding downward in the figure of the first member 21 and the locking claw B3 protruding upward in the figure from the clamping piece B2 of the second member 22, and passes between them in a zigzag pattern before being pulled out to the outside through the U-shaped opening A.

[0082] As a result, the portion of the cover skin 10 extending from the folded portion 13 toward the terminal end 11 passes between the locking claws 21C of the first member 21 and the locking claws B3 of the second member 22 that protrude alternately, is valley-folded from the folded portion 13, and then mountain-folded, and is then unfolded to the outside through the U-shaped opening A. After the above assembly, the cover skin 10 is stretched over the surface of the seat cushion 3 so that the tensioning portion 12 is pulled in a direction away from the hook portion 22A of the second member 22 (see FIG. 1).

[0083] With the above configuration, as shown in Fig. 12, when the cover skin 10 is stretched, the cover hook 20 is subjected to tension pulled upward in the figure by the stretching portion 12 of the cover skin 10, with the hook portion 22A hooked on the cushion frame 3F as a fulcrum. As a result, as shown in Fig. 13, the cover hook 20 is subjected to a force by the stretching portion 12 that pulls the first member 21 to the right in the figure. As a result, the locking claw 21C of the first member 21 is pressed against the locking claw B3 of the second member 22 from the left in the figure, with the cover skin 10 (the portion extending from the folded portion 13 toward the terminal 11) sandwiched therebetween.

[0084] Due to the above action, the cover fastener 20 is brought into a state in which the locking claw 21C of the first member 21 presses and pinches the cover skin 10 (the portion extending from the folded portion 13 toward the terminal 11) between the locking claw B3 of the second member 22, locking the movement, thereby firmly preventing the terminal 11 from coming off. At this time, the force that presses and pinches the cover skin 10 (the portion extending from the folded portion 13 toward the terminal 11) between the locking claws 21C and B3 to lock the movement is applied widely in a planar or linear manner over the entire longitudinal area of ​​the cover skin 10. Therefore, localized stress concentration is unlikely to occur in the cover skin 10, making it less likely to break.

[0085] The configuration other than the above is substantially the same as the configuration shown in the first embodiment, so the same components as those shown in the first embodiment will be denoted by the same reference numerals and detailed description thereof will be omitted.

[0086] Other Embodiments Although the present invention has been described above using three embodiments, the present invention can be embodied in various forms in addition to the above embodiments.

[0087] 1. The cover fastener and seat cover of the present invention can be applied to automobile seat cushions as well as other seat components such as seat backs and ottomans. They can also be widely applied to seats used in vehicles other than automobiles, such as trains, as well as in vehicles other than automobiles, such as airplanes and ships. They can also be applied to seats installed in various facilities, such as sports facilities, theaters, concert halls, and event venues, as well as seats other than vehicles, such as massage seats.

[0088] 2. The first and second members constituting the cover fastener may be separate components that are not connected to each other by an integral hinge. The first and second members may also be connected to each other by a flexible member such as a strap.

[0089] 3. The covering portion of the first member may not have positioning insertion tabs that are inserted into the holes in the cover skin, and may be configured so that the cover skin is simply folded over to cover the covering portion. [Explanation of symbols]

[0090] 1 sheet 2 seat backs 3 seat cushions 3F cushion frame (seat frame) 3P cushion pad 3C Cushion Cover (Seat Cover) 10 Cover skin 11 Terminals 12 Tensioning section 13 Folded section 13A hole 20 Cover fastener 21 First member 21A Cover 21B Insertion claw 21C Locking claw (pressure point) 21D Pressing claw (pressing area) 22 Second member 22A hook 22B Clamping part B1 Top board B2 Clamping piece B3 Locking claw (pressure point) A opening 23A Integral Hinge 23B Integral Hinge T pressing jig

Claims

1. A cover fastener for hooking and fixing the cover skin of a seat cover to a seat frame, a first member having a covering portion that can be folded over to cover the cover skin; a second member having a hook portion that can be hooked onto the seat frame and a clamping portion that can clamp the covering portion together with the cover skin that is folded over in a U-shaped clamping shape that follows the folded-over shape of the cover skin, The first member and the clamping portion are each formed with a pressing portion that presses the cover skin against each other so as to sandwich the cover skin between them by tension generated when the cover skin is pulled from the hook portion, The cover fastener has an insertion claw formed on the covering portion that can be inserted into a hole formed in the folded portion of the cover skin.

2. The cover fastener according to claim 1, The cover fastener is configured such that the insertion claw is fitted into the hole so that movement in a direction along the folded portion is restricted.

3. A cover fastener for hooking and fixing the cover surface of a seat cover to a seat frame, a first member having a covering portion that can be folded over to cover the cover skin; a second member having a hook portion that can be hooked onto the seat frame and a clamping portion that can clamp the covering portion together with the cover skin that is folded over in a U-shaped clamping shape that follows the folded-over shape of the cover skin, The first member and the clamping portion are each formed with a pressing portion that presses the cover skin against each other so as to sandwich the cover skin between them by tension generated when the cover skin is pulled from the hook portion, The first member and the clamping portion are each formed with a locking claw that engages with the first member and the clamping portion so as to be prevented from coming off each other by inserting the covering portion together with the cover skin that is folded over into the clamping portion through a U-shaped opening, A pressure claw is formed on the first member, which is pressed in the direction of being further inserted into the clamping portion by the tension applied by the hook portion to the cover surface, and is pressed against the locking claw of the clamping portion, and each of the pressing areas is formed by the pressure claw and the locking claw of the clamping portion.

4. A cover fastener for hooking and fixing the cover surface of a seat cover to a seat frame, a first member having a covering portion that can be folded over to cover the cover skin; a second member having a hook portion that can be hooked onto the seat frame and a clamping portion that can clamp the covering portion together with the cover skin that is folded over in a U-shaped clamping shape that follows the folded-over shape of the cover skin, The first member and the clamping portion are each formed with a pressing portion that presses the cover skin against each other so as to sandwich the cover skin between them by tension generated when the cover skin is pulled from the hook portion, The first member and the clamping portion are each formed with a locking claw that engages with the first member and the clamping portion so as to be prevented from coming off each other by inserting the covering portion together with the cover skin that is folded over into the clamping portion through a U-shaped opening, A cover latching device in which each of the pressing portions is formed by each of the locking claws.

5. The cover fastener according to claim 4, The cover fastener has a barbed shape in which the locking claws are hooked together so as to be prevented from coming off.

6. A cover fastener for hooking and fixing the cover skin of a seat cover to a seat frame, a first member having a covering portion that can be folded over to cover the cover skin; a second member having a hook portion that can be hooked onto the seat frame and a clamping portion that can clamp the covering portion together with the cover skin that is folded over in a U-shaped clamping shape that follows the folded-over shape of the cover skin, The first member and the clamping portion are each formed with a pressing portion that presses the cover skin against each other so as to sandwich the cover skin between them by tension generated when the cover skin is pulled from the hook portion, The cover fastener further includes an integral hinge that connects the first member and the second member by integral molding so that they can move relative to each other.

7. A seat cover having the cover fastener according to any one of claims 1 to 6.

Images