Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
  • A47C31/02—Upholstery attaching means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B68—SADDLERY; UPHOLSTERY
  • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
  • B68G7/00—Making upholstery
  • B68G7/05—Covering or enveloping cores of pads
  • B68G7/052—Covering or enveloping cores of pads with webs secured to the core, e.g. by stitching

Definitions

• the present invention relates to a fastening member and fastening method for fastening a cover member to a cushion body.
• the hanging member has a tape body (fabric body) made of nonwoven fabric, and an anchor part (columnar body) made of synthetic resin attached to the side edge of the tape body.
• the anchor part is formed so that its cross section is shaped like an arrowhead.
• the clip member has a flat base part (leg piece), a pair of arms that curve and rise up from the base part, and a pair of claw pieces provided at the tip of each arm part.
• the pair of arms are formed to be elastically deformable.
• the pair of claw pieces are formed so that they can hook onto the anchor part housed within the arm part as the arm part elastically returns to its original position after the anchor part is inserted into the arm part.
• the hanging member attached to the cover member is inserted into and engaged with a clip member fixed to the cushion body, thereby fixing the hanging member to the clip member.
• the cover member is pulled in by the hanging member, and is engaged and held by the cushion body via the hanging member and clip member.
• Patent Document 1 multiple cover parts and hanging members are overlapped with each other and sewn together at seams, making it difficult to partially change only a portion of the cover part of the cover member in order to repair or change the design of the vehicle seat, etc.
• the present invention was made in consideration of the above-mentioned problems, and its purpose is to provide a fastening member and fastening method that can fasten a skin member to a cushion body and also makes it easy to peel the skin member off the cushion body.
• the fastening member has a pair of legs extending in the height direction from a base portion, a pair of engaging protrusions protruding from the inner surface of each leg toward the other leg, and a storage space provided between the pair of legs, and the storage space is disposed between the base portion and the pair of engaging protrusions in the height direction, and the portions of the first fastener stringer and the second fastener stringer that include the fastener elements in a mutually interlocking state are inserted into the storage space of the clip member and engage with the pair of engaging protrusions, thereby engaging and holding the cover member to the cushion body.
• fastening member of the present invention it is preferable that at least one fastener element of the first fastener stringer and at least one fastener element of the second fastener stringer, which are meshed with each other, engage with a pair of the engaging protrusions.
• the maximum value of the widthwise dimension of the two engaged fastener elements is defined as the element width
• the minimum value of the widthwise dimension of the distance between a pair of the engaging protrusions is defined as the minimum width interval. In this case, it is preferable that the minimum width interval is smaller than the element width.
• each of the legs preferably has a base end connected to the base, an intermediate portion extending from the base in the height direction and gradually increasing the width dimension of the leg as it moves away from the base, and a tip portion extending from the intermediate portion in the height direction.
• the pair of engaging protrusions have portions that overlap with each other in relation to a range in which the legs are formed in the longitudinal direction. It is also preferable that the engaging protrusion is provided over a range of 50% or more of the leg in the length direction of the leg.
• each of the engagement protrusions has an inclined portion that is inclined so that the dimension in the width direction of the engagement protrusion gradually increases toward one side or the other of the length direction of the leg when the clip member is viewed from the direction in which the fastener element is inserted into the storage space.
• a fastening method for engaging and holding a skin member having a first skin portion and a second skin portion to a cushion body including: attaching a first fastener stringer and a second fastener stringer to the first skin portion and the second skin portion, respectively; fixing at least one clip member to the cushion body, the clip member having a base portion, a pair of legs extending in the height direction from the base portion, a pair of engaging protrusions protruding from the inner surface of each of the legs toward the other leg portion, and a storage space portion provided between the pair of legs; engaging a fastener element of the first fastener stringer with a fastener element of the second fastener stringer by a slider; and inserting a portion of the first fastener stringer and the second fastener stringer including the fastener elements in a mutually engaged state into the storage space portion of the clip member to engage with the pair of engaging protrusions.
• the fastening method of the present invention preferably includes fixing the plurality of clip members to the groove bottom of a storage groove portion provided in the cushion body, and inserting an element row formed by the plurality of fastener elements of the first fastener stringer and an element row formed by the plurality of fastener elements of the second fastener stringer along the storage groove portion with the fastener elements interlocked, to engage the plurality of clip members.
• FIG. 11 is a perspective view showing a clip member according to a second embodiment of the present invention
• FIG. 8 is a plan view of the clip member shown in FIG. 7 .
• FIG. 8 is a front view of the clip member shown in FIG. 7 .
• FIG. 11 is a perspective view showing a clip member according to a third embodiment of the present invention;
• FIG. 11 is a plan view of the clip member shown in FIG. 10 .
• FIG. 11 is a front view of the clip member shown in FIG. 10 .
• FIG. 11 is a perspective view showing a clip member according to a fourth embodiment of the present invention;
• FIG. 11 is a perspective view showing a clip member according to a fifth embodiment of the present invention.
• the front-to-rear direction refers to the direction along the length of the fastener tape in the fastener stringer and along the length of the legs and storage space of the clip member.
• the length dimension refers to the dimension in the front-to-rear direction (length direction) of that part.
• the “up-down direction” refers to the direction in which the legs of the clip member extend from the base and along the height direction of the legs.
• the direction away from the base is defined as the "upward direction”
• the direction approaching the base is defined as the “downward direction.”
• the height dimension refers to the dimension of that part in the up-down direction (height direction).
• the left-right direction refers to the direction along the width of the base and legs of the clip member.
• the direction in which the pair of legs approach each other is defined as the inside in the left-right direction
• the direction in which the pair of legs move away from each other is defined as the outside in the left-right direction.
• the width dimension refers to the dimension of that part in the left-right direction (width direction).
• the fastening member 1 of this embodiment 1 has a first fastener stringer 21 and a second fastener stringer 22 attached to the cover member 10, and a plurality of clip members 30 that are fixed to the cushion body 6 and engage the first fastener stringer 21 and the second fastener stringer 22.
• the skin member 10 is a flexible member formed into a sheet-like shape from fabric.
• the skin member 10 may be formed from a material other than fabric, such as synthetic leather.
• the skin member 10 in this embodiment 1 has at least a first skin portion (first skin piece) 11 and a second skin portion (second skin piece) 12 cut into a required shape.
• the first skin portion 11 and the second skin portion 12 are formed from different pieces of fabric that are separated from each other by cutting.
• the first skin portion 11 and the second skin portion 12 may be formed from different parts of a single continuous piece of fabric.
• the first skin part 11 and the second skin part 12 are connected to each other by meshing a fastener element 24 (described later) of a first fastener stringer 21 attached to the first skin part 11 with a fastener element 24 (described later) of a second fastener stringer 22 attached to the second skin part 12, thereby forming the skin member 10.
• first skin portion 11 and the second skin portion 12 are connected via the first fastener stringer 21 and the second fastener stringer 22 to form the skin connection portion 15 of the skin member 10.
• This skin connection portion 15 is formed continuously on the back surface of the skin member 10 for a required length.
• the cushion body 6 covered by the skin member 10 is formed into a shape corresponding to the shape of the seat to be manufactured by foam molding using a foaming resin such as foamed polyurethane.
• the outer surface of the cushion body 6 is provided with a storage groove portion 7 that pulls in and stores the skin connection portion 15 of the skin member 10, and corresponds to the installation position and installation length of the skin connection portion 15 on the skin member 10.
• each of the left and right engaging protrusions 33 has a downwardly inclined surface 33a that slopes downward from the tip 32c of the leg 32 toward the inside in the left-right direction, a bottom end surface 33b that extends toward the inside in the left-right direction from the middle part 32b of the leg 32, and a tip surface that is formed parallel in the vertical direction from the downwardly inclined surface 33a to the bottom end surface 33b of the engaging protrusion 33.
• the lower end surface 33b of the engaging protrusion 33 is formed as a flat surface perpendicular to the up-down direction.
• the left and right engaging protrusions 33 protrude inward in the left-right direction from the entire front-to-rear range of the leg 32 in a shape close to a triangle when viewed in a plan view of the clip member 30 ( Figure 3), for example.
• the left and right engaging protrusions 33 are each provided over 100% of the range of the leg 32 in the front-to-rear direction, and are arranged so that the entire engaging protrusions 33 overlap with each other in terms of their relative formation range in the front-to-rear direction.
• the left and right engaging protrusions 33 are formed long in the front-to-rear direction in this way, the left and right fastener elements 24 housed in the housing space 35 of the clip member 30 can be stably engaged with the left and right engaging protrusions 33.
• the left and right engagement protrusions 33 have asymmetric shapes relative to each other in the plan view ( Figure 3) with respect to the center line in the width direction of the clip member 30 (particularly between the left and right legs 32). In this case, the center line is parallel to the front-rear direction. Furthermore, the left and right engagement protrusions 33 have point-symmetric shapes relative to each other.
• each engaging protrusion 33 has a first inclined surface 34a that is disposed on one side (front or rear) of the engaging protrusion 33 in the fore-and-aft direction and is inclined relative to the fore-and-aft direction, a second inclined surface 34b that is disposed on the other side (rear or front) of the engaging protrusion 33 in the fore-and-aft direction and is inclined relative to the fore-and-aft direction, and a top end surface 34c that is disposed between the first inclined surface 34a and the second inclined surface 34b.
• the first inclined surface 34a, the second inclined surface 34b, and the top end surface 34c of the engagement protrusion 33 are each formed as a flat surface (see FIG. 2). Note that in the present invention, the first inclined surface 34a, the second inclined surface 34b, and the top end surface 34c of the engagement protrusion 33 may be formed as a surface other than a flat surface, such as a curved surface.
• the second inclined surface 34b of the engaging protrusion 33 is inclined in the vertical direction at a larger inclination angle than the first inclined surface 34a in the plan view ( Figure 3).
• the first inclined surface 34a is arranged to be inclined more gently than the second inclined surface 34b.
• the first inclined surface 34a is also formed to be longer than the second inclined surface 34b. Note that the inclination angles of the first inclined surface 34a and the second inclined surface 34b in the vertical direction refer to the angles on the inner corner side of the engaging protrusion 33.
• the inclination angle of the engaging protrusion 33 will be specifically described.
• the first inclined surface 34a of the engaging protrusion 33 has an inclination angle of 5° to 30°, preferably 10° to 20°, in the vertical direction.
• the second inclined surface 34b has an inclination angle of 15° to 50°, preferably 20° to 40°, in the vertical direction.
• the top end surface 34c of the engaging protrusion 33 is inclined at an even smaller inclination angle in the vertical direction than the first inclined surface 34a.
• the top end surface 34c of this embodiment 1 has an inclination angle in the vertical direction that is greater than 0° and less than 10°.
• the top end surface 34c may be arranged parallel to the vertical direction.
• the first inclined surface 34a of the engagement protrusion 33 is arranged continuously over a range of 50% to 80% of the entire formation range of the leg 32 in the front-to-rear direction, or of the entire formation range from the front edge to the rear edge of the clip member 30.
• the left and right apex end faces 34c are disposed at different positions in the front-to-rear direction.
• the left and right apex end faces 34c are disposed at positions facing the first inclined surface 34a of the mating engagement protrusion 33.
• the left and right second inclined surfaces 34b are disposed at positions facing the first inclined surface 34a of the mating engagement protrusion 33.
• the second inclined surfaces 34b are disposed continuously over a range of 10% or more and less than 50% of the entire formation range of the leg 32 in the front-to-rear direction.
• the maximum width dimension of the left and right engaging protrusions 33 is set to 10% to 45% of the distance between the left and right legs 32.
• the shortest distance between the left and right engaging protrusions 33 is set to be smaller than the element width L1 of the meshed left and right fastener elements 24.
• element width L1 is the maximum widthwise dimension of the two interlocking fastener elements 24 when the fastener element 24 of the first fastener stringer 21 and the fastener element 24 of the second fastener stringer 22 are interlocked as shown in FIG. 6, for example.
• element width L1 is the dimension in the left-right direction from the leftmost portion of the left fastener element 24 to the rightmost portion of the right fastener element 24 when the left and right fastener elements 24 are interlocked with each other.
• the shortest distance between the left and right engaging protrusions 33 in the plan view (Fig. 3) is the distance between the first inclined surface 34a of the left engaging protrusion 33 and the first inclined surface 34a of the right engaging protrusion 33 in a direction perpendicular to the first inclined surface 34a. Furthermore, the left and right engaging protrusions 33 are formed so that the distance between the left and right engaging protrusions 33 is greatest at the front end and rear end of the clip member 30 in the plan view (Fig. 3).
• the left and right fastener elements 24 By forming the left and right engaging protrusions 33 as described above, when the left and right fastener elements 24 are pushed downward to move them into the storage space 35 of the clip member 30 as described below, the left and right fastener elements 24 can be easily moved into the storage space 35 via the gap between the left and right engaging protrusions 33.
• the left and right fastener elements 24 move into and are accommodated in the accommodation space 35 of the clip member 30, the left and right fastener elements 24 can be stably engaged with the left and right engagement protrusions 33.
• the maximum height dimension of the storage space 35 is not particularly limited, but is set to, for example, 100% to 250% of the maximum height dimension of the interlocking left and right fastener elements 24.
• the above-mentioned minimum width interval S1 between the left and right engaging protrusions 33 is set to be smaller than the element width L1 of the left and right fastener elements 24.
• the first fastener stringer 21 and the second fastener stringer 22 are sewn in advance to the side edge portions 11a, 12a of the first skin portion 11 and the second skin portion 12, respectively, by sewing with a sewing machine, as shown in FIG. 5.
• the multiple clip members 30 are fixed to the cushion body 6 by insert molding during the foam molding of the cushion body 6.
• the clip members 30 are attached to predetermined positions inside the foam molding die when the cushion body 6 is foam molded, and are fixed within the accommodating groove portion 7 of the molded cushion body 6.
• the slider 80 is attached to the element rows of the first fastener stringer 21 and the second fastener stringer 22.
• the slider 80 is removably attached to a pair of left and right element rows from one end in the longitudinal direction of the element rows.
• the shape and structure of the slider 80 are not particularly limited, and a slider that is generally known in the art for engaging and separating the coil-shaped fastener elements 24 can be used.
• the slider 80 After attaching the slider 80 to the element rows of the first fastener stringer 21 and the second fastener stringer 22, the slider 80 is slid along the element rows. This allows the fastener elements 24 of the first fastener stringer 21 and the fastener elements 24 of the second fastener stringer 22 to be interlocked in sequence over the entire length of the element rows.
• the first skin portion 11 and the second skin portion 12 are connected via the first fastener stringer 21 and the second fastener stringer 22, thereby forming the skin member 10. Furthermore, the slider 80 is removed from the element row after the fastener elements 24 are engaged. Note that in the present invention, the slider 80 does not have to be removed from the element row. Furthermore, the slider 80 may be attached to the first fastener stringer 21 and the second fastener stringer 22 in such a way that it cannot be removed from the element row.
• a part of the skin member 10 is pulled into the accommodation groove portion 7, and the first skin portion 11 and the second skin portion 12 are overlapped.
• a skin connection portion 15 that is accommodated in the accommodation groove portion 7 is continuously formed on the back surface of the skin member 10 in correspondence with the accommodation groove portion 7.
• the meshed left and right element rows are arranged along the skin connection portion 15.
• the left and right engaging protrusions 43 are provided with parallel surfaces 44c (see FIG. 8). Therefore, when the interlocked left and right fastener elements 24 are accommodated in the accommodation space 45 of the clip member 40, the left and right engaging protrusions 43 can be firmly engaged with the left and right fastener elements 24, and the left and right fastener elements 24 can be stably held by the left and right engaging protrusions 43.
• the left and right engagement protrusions 43 are also formed with a shape that is missing one or the other side in the front-to-rear direction. Therefore, when removing the fastener element 24 from the storage space 45 of the clip member 40, the fastener element 24 can be more easily pulled out from one or the other side in the front-to-rear direction of the clip member 40.
• the fastening member 3 of the third embodiment has a first fastener stringer 21 and a second fastener stringer 22 attached to the cover member 10 of the vehicle seat, and a plurality of clip members 50 fixed to the cushion body 6.
• the plurality of clip members 50 of the third embodiment are fixed to the groove bottom of the accommodation groove portion 7 of the cushion body 6 at intervals from each other in the longitudinal direction of the accommodation groove portion 7.
• the clip member 50 of this embodiment 3 has a flat base portion 51, a pair of left and right legs 52 extending upward from the top surface of the base portion 51, a pair of left and right engaging protrusions 53 protruding from the inner surface of each of the left and right legs 52 toward the other leg 52, and a storage space portion 55 provided between the left and right legs 52.
• the base portion 51, the pair of legs 52, and the storage space portion 55 of the clip member 50 are formed substantially in the same manner as the clip member 30 of the above-mentioned embodiment 1. Therefore, the legs 52 have a base end portion 52a, an intermediate portion 52b, and a tip end portion 52c.
• the left and right engaging protrusions 53 protrude inward in the left-right direction from the inner surfaces of the middle portion 52b and the tip portion 52c of the leg portion 52.
• the engaging protrusions 53 of this embodiment 1 are formed to protrude inward in the left-right direction from the inner surfaces of the legs 52 in a substantially triangular shape when viewed from the front of the clip member 50 (FIG. 12).
• each of the left and right engaging protrusions 53 has a downwardly inclined surface 53a that slopes downward from the tip portion 52c of the leg portion 52 toward the inside in the left-right direction when viewed from the front (FIG. 12).
• each of the left and right engaging protrusions 53 has a downwardly inclined surface 53a that slopes downward from the tip portion 52c of the leg portion 52 toward the inside in the left-right direction, a bottom end surface 53b that extends from the middle portion 52b of the leg portion 52 toward the inside in the left-right direction, and a tip surface that is formed parallel in the up-down direction from the downwardly inclined surface 53a to the bottom end surface 53b of the engaging protrusion 53.
• the left and right engaging protrusions 53 in a plan view of the clip member 50 ( Figure 11), protrude inward in the left-right direction from the entire front-to-rear range of the leg 52 in a trapezoidal shape.
• the left and right engaging protrusions 53 have a shape that is line-symmetrical with respect to the center line in the width direction of the clip member 50.
• the left and right engaging protrusions 53 are arranged such that the entire engaging protrusions 53 overlap each other in their front-to-rear range.
• each of the left and right engagement protrusions 53 has an inclined surface 54a disposed at both ends of the engagement protrusion 53 in the front-rear direction, and a parallel surface 54b disposed between the two inclined surfaces.
• the inclined surface 54a of the engagement protrusion 53 corresponds to the inclined portion of the engagement protrusion described in the claims.
• one inclined surface 54a and the other inclined surface 54a of the engagement protrusion 53 correspond to the first inclined portion and the second inclined portion, respectively.
• the inclined surface 54a and the parallel surface 54b of the engagement protrusion 53 are each formed as a flat surface.
• the inclined surface 54a of the engagement protrusion 53 is inclined at an inclination angle of 30° to 60° with respect to the front-rear direction in the plan view (FIG. 11).
• the parallel surfaces 54b of the engaging protrusions 53 are arranged parallel to the front-to-rear direction.
• the parallel surfaces 54b of the engaging protrusions 53 are arranged continuously over a range of 50% to 90% of the overall length of the leg 52 or the clip member 50 in terms of the range of their formation in the front-to-rear direction.
• the range in the front-to-rear direction of the parallel surfaces 54b of the engaging protrusion 53 is 50% or more of the entire leg 52 or the entire clip member 50, so that the engaging protrusion 53 can properly hold down the left and right fastener elements 24 housed in the housing space 55 of the clip member 50.
• the range in the front-to-rear direction of the parallel surfaces 54b is 90% or less of the entire leg 52 or the entire clip member 50, so that the inclined surfaces 54a can be properly provided at the front and rear ends of the engaging protrusion 53.
• the maximum width dimension of the left and right engaging protrusions 53 is set to 10% to 45% of the widthwise distance between the left and right legs 52.
• the shortest distance between the left and right engaging protrusions 53 in the plan view ( Figure 11) or front view ( Figure 12) is set to be smaller than the element width L1 of the meshed left and right fastener elements 24.
• the left and right engaging protrusions 53 are formed so that the distance between the left and right engaging protrusions 53 is greatest at the front end and rear end of the clip member 50.
• fastening member 3 of this embodiment which includes the first fastener stringer 21, the second fastener stringer 22, and the multiple clip members 50 as described above, it is possible to obtain substantially the same effects as when the fastening member 3 of the above-mentioned embodiments 1 and 2 is used.
• the left and right engaging protrusions 53 are provided with parallel surfaces 54b (see FIG. 11). Therefore, when the interlocked left and right fastener elements 24 are accommodated in the accommodation space 55 of the clip member 50, the left and right engaging protrusions 53 can be more firmly engaged with the left and right fastener elements 24, and the left and right fastener elements 24 can be stably held by the left and right engaging protrusions 53.
• FIG. 13 is a perspective view illustrating a clip member according to the fourth embodiment.
• the fastening member 4 of the fourth embodiment has a first fastener stringer 21 and a second fastener stringer 22 attached to the cover member 10 of the vehicle seat, and a clip member 60 made of synthetic resin and fixed to the cushion body 6.
• the clip member 60 is fixed to the groove bottom of the accommodating groove portion 7 formed in an elongated shape of the cushion body 6 along the longitudinal direction of the accommodating groove portion 7.
• fastening member 4 of this embodiment 4 which includes the first fastener stringer 21, the second fastener stringer 22, and the clip member 60 described above, it is possible to obtain substantially the same effect as when the fastening member 1 of the above-mentioned embodiment 1 is used.
• FIG. 14 is a perspective view illustrating a clip member according to the fifth embodiment.
• the fastening member 5 of the fifth embodiment has a first fastener stringer 21 and a second fastener stringer 22 attached to the cover member 10 of the vehicle seat, and a clip member 70 made of synthetic resin and fixed to the cushion body 6.
• the clip member 70 is fixed to the groove bottom of the accommodating groove portion 7 formed in an elongated shape of the cushion body 6 along the longitudinal direction of the accommodating groove portion 7.
• the clip member 70 of this embodiment 5 has a flat base portion 71, a pair of left and right legs 72 extending upward from the top surface of the base portion 71, a pair of left and right engagement protrusions 73 protruding from the inner surface of each of the left and right legs 72 toward the other leg 72, and a storage space portion 75 provided between the left and right legs 72.
• the base portion 71, pair of legs 72, and storage space portion 75 of the clip member 70 are each formed longer in the front-to-rear direction than the clip member 30 of the above-mentioned embodiment 1, but are formed substantially the same as the base portion 31, pair of legs 32, and storage space portion 35 of the clip member 30 of embodiment 1, except for the different length dimensions.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Textile Engineering (AREA)
• Insertion Pins And Rivets (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)

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Citations (7)

• 2023
  • 2023-10-12 WO PCT/JP2023/037072 patent/WO2025079212A1/ja active Pending
  • 2023-10-12 CN CN202380102589.3A patent/CN121889065A/zh active Pending
  • 2023-10-12 JP JP2025551288A patent/JPWO2025079212A1/ja active Pending
  • 2023-10-12 KR KR1020267007444A patent/KR20260046506A/ko active Pending

Patent Citations (7)

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