JP2017060582A - Fixing system and clip fixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing system capable of improving workability of a clip fixing work.SOLUTION: A fixing system 50 includes a clip 7 and a fixer 30. First projection parts 32 and a second projection part 35 are mutually arranged by projection from a bottom part 31 at an interval in the fixer 30, and vertical wall parts 39 are arranged between the first projection parts 32 and the second projection part 35. Engagement parts 41 with which pawl parts 15 of the clip 7 are engaged are arranged in the vertical wall parts 39, so that the clip 7 can be fixed to the fixer 30. Since the fixer 30 is arranged inside a molding tool 20, a seat pad 4 integrated with the clip 7 can be formed by insertion molding. Thus, workability of a fixing work of the clip 7 is improved.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a fixing system and a clip fixing tool, and more particularly to a fixing system and a fixing tool capable of improving workability of clip fixing work.

  There is a technique of attaching a seat cover to a seat pad in a state where a part of the seat cover is suspended and held in a groove formed on the surface of the seat pad and a wrinkle caused by an extra length is extended. For example, in Patent Document 1, a linear body such as a wire is provided in a groove portion of a seat pad, a base portion side of a plurality of clips is fixed to a plurality of locations of the linear body, and a clip having a claw portion formed on the distal end side is extended. A technique for extending the protruding piece into the groove is disclosed. In this technique, a part of the seat cover is suspended in the groove part by engaging the engaging part provided on the back surface of the seat cover with the claw parts of the clips provided in a plurality of places in the groove part of the seat pad. It can be held in a locked state.

JP 2011-45424 A

  However, the above-described conventional technique has a problem that the work of fixing the plurality of clips to the linear body provided on the seat pad is complicated and requires a great number of man-hours.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fixing system and a fixture that can improve workability of clip fixing work.

Means for Solving the Problems and Effects of the Invention

  The fixing system according to claim 1 is provided with a clip partly embedded in a seat pad having a groove part in which a part of the seat cover is accommodated, and a fixture for fixing the clip in a molding die of the seat pad. Yes. The leg of the clip is embedded in the molded seat pad, and an extending piece extends from the leg into the groove. A claw part protrudes from the front end side of the extension piece, and the claw part locks a locking tool provided on the back surface of the seat cover.

  In the fixing device, the first convex portion and the second convex portion project from the bottom portion with a space therebetween, and the vertical wall portion inserted between the pair of extending pieces has the first convex portion and the second convex portion. It is arranged between the parts. Since the engaging part with which the nail | claw part engages is provided in a vertical wall part, a clip can be fixed to a fixing tool. By arranging the fixing tool in the mold, the seat pad integrated with the clip can be insert-molded, so that the workability of the clip fixing work can be improved.

  The first convex portion and the second convex portion have inner surfaces facing each other extending along the height direction of the vertical wall portion and continuing to the bottom portion, and the top surface continuing to the inner surface is associated with the claw portion of the clip. The clip can be positioned with respect to the height direction of the fixture since it abuts on the leg while being engaged with the joint. Since the extending piece of the clip is disposed between the inner surface and the inner surface of the fixture with the claw portion engaged with the engaging portion, the clip can be positioned with respect to the width direction of the fixture. Since the clip can be positioned with respect to the height direction and the width direction of the fixture, the clip can be positioned with respect to the depth direction and the length direction of the groove portion of the seat pad after molding.

  According to the fixing system of claim 2, the first convex portion and the second convex portion have a gap between the extending piece and the inner side surface of 0.15 mm or less on one side in a state where the claw portion is engaged with the engaging portion. Is set to a size. Therefore, it can suppress that a part of material enters into the clearance gap between an extension piece and an inner surface at the time of shaping | molding of a seat pad. When a part of the material enters the gap between the extension piece and the inner side surface and adheres to the extension piece or the claw part, an operation of locking the locking tool provided on the back surface of the seat cover to the claw part (seat pad The work of attaching the seat cover to the head) may be difficult. Since this can be suppressed, in addition to the effect of the first aspect, there is an effect that the workability of attaching the seat cover to the seat pad can be ensured.

  According to the fixing system of the third aspect, the first convex portion and the second convex portion have a gap between the extending piece and the bottom portion of 0.15 mm or less in a state where the claw portion is engaged with the engaging portion. Set to height. Therefore, it can suppress that a part of material enters into the clearance gap between an extension piece and a bottom part at the time of shaping | molding of a seat pad. When a part of the material enters the gap between the extension piece and the bottom part and adheres to the extension piece or the claw part, an operation of locking the locking tool provided on the back surface of the seat cover to the claw part (on the seat pad) The work of attaching the seat cover) may be difficult. Since this can be suppressed, in addition to the effect of the first or second aspect, there is an effect of ensuring workability of mounting the seat cover on the seat pad.

  According to the fixing system of the fourth aspect, the thickness of the vertical wall portion is gradually increased by the taper portion toward the engaging portion. The thickness of the tapered portion is set to 1.5 to 2 times that of the thinnest portion. When the clip is attached to the fixture, the interference between the claw portion and the taper portion becomes stronger toward the engaging portion. Therefore, in addition to the effect of any one of claims 1 to 3, when the clip is attached to the fixture. There is an effect which can improve a feeling of wearing.

  According to the fixing system of claim 5, the first convex portion and the second convex portion are inclined surfaces in which the interval between the inner side surfaces becomes gradually narrower toward the bottom portion, so that the clip is attached to the fixture. Sometimes, it is easy to insert the extended piece of the clip between the inner side surfaces. Therefore, in addition to the effect of any one of claims 1 to 4, there is an effect that the workability of the clip fixing work can be improved.

  According to the fixture of the sixth aspect, the clip is fixed in the seat pad mold. The clip has a leg portion embedded in the seat pad, and an extending piece extends from the leg portion into the groove portion. A claw part protrudes from the front end side of the extension piece, and the claw part locks a locking tool provided on the back surface of the seat cover. In the fixture, a vertical wall portion inserted between the pair of locking pieces protrudes from the center of the bottom portion. An engaging portion with which the claw portion engages is provided on the vertical wall portion, and the first convex portion and the second convex portion protrude from the outer side in the width direction of the engaging portion toward both sides in the thickness direction of the vertical wall portion. . The first convex portion and the second convex portion have inner surfaces facing each other extending along the height direction of the vertical wall portion and continuing to the bottom portion, and the top surface continuing to the inner surface is associated with the claw portion of the clip. It abuts on the leg in a state engaged with the joint. Therefore, there is an effect equivalent to that of the first aspect.

It is a perspective view of a vehicle seat. It is a top view of the seat pad to which the clip was attached. It is sectional drawing of the seat pad in the III-III line of FIG. It is a perspective view of a clip. It is a top view of the shaping | molding die of a seat pad. It is a perspective view of the fixing tool in one embodiment of the present invention. It is a top view of a fixing tool. It is a front view of a fixing tool. It is sectional drawing of the fixing tool in the IX-IX line of FIG. It is sectional drawing of the fixing tool in the XX line of FIG. It is sectional drawing of the fixing tool in the XI-XI line of FIG. It is a front view of the fixing system with which the clip was mounted | worn with the fixing tool. It is sectional drawing of the fixing system in the XIII-XIII line | wire of FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a perspective view of a vehicle seat 1, FIG. 2 is a plan view of a seat pad 4 to which a clip 7 is attached, and FIG. 3 is a cross-sectional view of the seat pad 4 taken along line III-III in FIG. FIG. 4 is a perspective view of the clip 7. In FIG. 2, illustration of the extended piece 14 and the like of the clip 7 is omitted.

  As shown in FIG. 1, the vehicle seat 1 includes a cushion pad 2 on which an occupant sits and a back pad 3 that supports the back of the occupant. The cushion pad 2 includes a seat pad 4 (see FIG. 3) made of a foamed synthetic resin such as polyurethane foam, a seat cover 6 that covers the mounting surface 5 on the upper surface side of the seat pad 4, and the seat cover 6 as a seat. And a clip 7 attached to the pad 4. Although illustration is omitted, the back pad 3 is configured in substantially the same manner as the cushion pad 2.

  As shown in FIG. 2, a groove 8 is formed on the mounting surface 5 (see FIG. 3) of the seat pad 4. In the present embodiment, the groove portion 8 includes two front and rear grooves 8a extending in the front and rear direction along the right and left bank portions of the seat pad 4, and two left and right grooves 8b extending in the left and right directions. The left and right grooves 8b communicate with the front and rear grooves 8a. The front and rear grooves 8a and the left and right grooves 8b are respectively attached with clips 7 along the longitudinal directions of the front and rear grooves 8a and the left and right grooves 8b (groove portions 8). In addition, arrangement | positioning of the groove part 8 is not limited to this.

  As shown in FIG. 3, the groove 8 formed in the mounting surface 5 of the seat pad 4 has a predetermined depth. The groove 8 is a part for accommodating a part of the seat cover 6. A locking tool 9 for pulling and locking the portion into the groove 8 is attached to the back surface of the seat cover 6 along the groove 8. The locking tool 9 includes a connection portion 10 connected to the seat cover 6 by sewing or adhesion, and a hook portion 11 extending from the connection portion 10 to the back side of the seat cover 6. A pair of ridges 12 projecting in opposite directions are provided on the front end side of the hook portion 11. The flange 12 is formed in a tapered shape in which the protruding width from the hook portion 11 increases toward the proximal end side of the hook portion 11.

  The locking tool 9 extends continuously in a direction substantially parallel to the extending direction of the groove 8. That is, the base end side of the hook portion 11 is formed in a hanging wall shape extending in a direction substantially parallel to the extending direction of the groove portion 8, and the flanges 12 are respectively formed along the leading edge of one side surface and the other side surface thereof. Are formed continuously.

  As shown in FIG. 4, the clip 7 is a member for holding a part of the seat cover 6 in a suspended state in the groove 8 by locking the locking tool 9. The clip 7 includes a leg portion 13 embedded in the seat pad 4, a pair of extending pieces 14 protruding from the leg portion 13 and extending into the groove portion 8, and the distal ends of the pair of extending pieces 14. And claw portions 15 projecting in a direction approaching each other, and they are integrally formed of a synthetic resin or metal having elasticity. The clip 7 is provided with two pairs of extended pieces 14 each having a claw portion 15 formed side by side at a distance from each other.

  The leg portion 13 is a portion for fixing the clip 7 in the groove portion 8 of the seat pad 4 and is formed in a substantially flat plate shape and a plurality of through holes (not shown) penetrating in the thickness direction. ing. Since the leg portion 13 has a through hole (not shown), the foamed synthetic resin constituting the seat pad 4 enters the through hole, and the leg portion 13 is firmly held by the seat pad 4 due to the anchor effect. The

  The extension pieces 14 are a pair of thin plate-like portions protruding from one surface side of the leg portion 13 and face each other with a predetermined interval, and the interval between the extension pieces 14 is the base portion on the tip side. It is curved and formed to be larger than the side. The extending piece 14 is configured to be elastically deformable in a direction approaching and separating from each other by being formed in a thin plate shape.

  The claw portion 15 is a portion for locking the collar 12 of the locking tool 9 provided on the back surface of the seat cover 6, and is provided over the longitudinal direction of the extending piece 14 (the vertical direction in FIG. 3). ing. The upper surface (the upper surface in FIG. 3) of the claw portion 15 is inclined downward so as to become lower (bottom side of the groove portion 8) toward the tip of the claw portion 15. Further, the lower surface (the surface on the leg 13 side) of the claw portion 15 is inclined upward so as to become higher (away from the leg portion 13) as it approaches the base (the extending piece 14 side) of the claw portion 15. Yes.

  Next, a molding die 20 for foam-molding the seat pad 4 will be described with reference to FIG. FIG. 5 is a plan view of the mold 20 for the seat pad 4. In FIG. 5, the lower mold | type in which the to-be-attached surface 5 of the seat pad 4 is formed is illustrated among the shaping | molding dies 20, and illustration of the upper mold | type which forms a cavity between the lower mold | types is abbreviate | omitted.

  As shown in FIG. 5, the mold 20 includes a mold bottom portion 21 whose inner surface is a molding surface of the mounting surface 5 of the seat pad 4, a mold wall portion 22 erected over the outer peripheral edge of the mold bottom portion 21, A ridge portion 23 is provided at a predetermined position of the mold bottom portion 21 and is erected in a ridge shape. The protrusion 23 is a part for forming the groove part 8 of the seat pad 4, and the accommodating parts 24 in which the fixtures 30 are accommodated are recessed at predetermined positions. The fixing tool 30 accommodated in the accommodating part 24 is fixed to the mold bottom part 21 with a screw or the like.

  Next, the fixture 30 will be described with reference to FIGS. 6 is a perspective view of the fixture 30 according to the embodiment of the present invention, FIG. 7 is a plan view of the fixture 30, and FIG. 8 is a front view of the fixture 30. As shown in FIG. 9 is a cross-sectional view of the fixture 30 taken along line IX-IX in FIG. 7, FIG. 10 is a cross-sectional view of the fixture 30 taken along line XX in FIG. 7, and FIG. 11 is taken along line XI-XI in FIG. It is sectional drawing of the fixing tool 30 in. The fixture 30 is a member to which the clip 7 is attached before insert molding of the seat pad 4.

  As shown in FIGS. 6 to 8, the fixture 30 is a member formed in a horizontally long substantially rectangular parallelepiped shape when viewed from the front. In the present embodiment, fixture 30 is integrally formed of a steel material (stainless steel in the present embodiment). As shown in FIGS. 6 to 8, the fixture 30 includes a bottom portion 31, first and second convex portions 32, 35 projecting from the bottom portion 31 at intervals, and the first convex portion 32 and the first convex portion 32. The vertical wall part 39 arrange | positioned between the 2 convex parts 35 and the engaging part 41 provided near the bottom part 31 of the vertical wall part 39 are provided.

  The bottom portion 31 is a portion serving as a base of the fixture 30 and is formed in a rectangular plate shape in plan view. The first convex portion 32 and the second convex portion 35 are substantially rectangular parallelepiped portions for supporting the leg portion 13 in a state where the clip 7 is attached to the fixture 30, and are spaced apart from each other along the long side of the bottom portion 31. Is provided at the bottom 31. In the present embodiment, the second convex portion 35 is positioned between the first convex portions 32 and 32 provided at both ends of the bottom portion 31.

  The first convex portion 32 and the second convex portion 35 are set to have a thickness (dimension in the short side direction of the bottom portion 31) larger than that of the vertical wall portion 39. The vertical wall portion 39 is a portion that is inserted between the extended pieces 14 of the clip 7 (see FIG. 4), and is disposed along the long side of the bottom portion 31. The 1st convex part 32 and the 2nd convex part 35 are parts which support the leg part 13 of the clip 7 by which the extension piece 14 was attached to the vertical wall part 39. As shown in FIG.

  The first convex portion 32 includes an inner side surface 33 that continues to the bottom portion 31 and extends in the height direction of the vertical wall portion 39, and a top surface 34 that continues to the inner side surface 33. The second convex portion 35 includes an inner side surface 36 that continues to the bottom portion 31 and extends in the height direction of the vertical wall portion 39, and a top surface 37 that continues to the inner side surface 36. The inner side surfaces 33, 36 have a thickness of the vertical wall portion 39 depending on a difference between the thickness of the first convex portion 32 and the second convex portion 35 (dimension in the short side direction of the bottom portion 31) and the thickness of the vertical wall portion 39. It is a site | part formed in two places of the both sides of a direction, respectively. As for the 2nd convex part 35, the through-hole 38 extended along a height direction in the top surface 37 is formed. The through hole 38 is a portion through which a screw (not shown) for attaching the fixing tool 30 to the mold 20 is inserted, and penetrates the second convex portion 35 and the bottom portion 31.

  As shown in FIGS. 8 and 9, the top surfaces 34 and 37 of the first convex portion 32 and the second convex portion 35 are formed parallel to the bottom portion 31 and located on the same plane. In this Embodiment, the top surfaces 34 and 37 of the 1st convex part 32 and the 2nd convex part 35, and the front-end | tip of the vertical wall part 39 are located on the same plane. The inner side surfaces 36 and 37 of the first convex portion 32 and the second convex portion 35 are inclined surfaces facing each other, and are set such that the distance between the inner side surfaces 36 and 37 gradually decreases toward the bottom portion 31.

  The vertical wall 39 is connected to the first protrusion 32 and the second protrusion 35 and is connected to the bottom 31. Since the bottom 31 is formed with a smaller dimension in the height direction (vertical direction in FIG. 8) than the first and second protrusions 32 and 35, the bottom 31 is between the first and second protrusions 32 and 35. There is a risk of bending failure. However, since the vertical wall portion 39 is connected to the bottom portion 31, the first convex portion 32, and the second convex portion 35, the vertical wall portion 39 functions as a rib, and the bending strength of the bottom portion 31 can be secured. The vertical wall portions 39 have their tips located on the same plane as the top surfaces 34 and 37 of the first convex portion 32 and the second convex portion 35, so the top surfaces of the first convex portion 32 and the second convex portion 35. Compared with the case where the height of the vertical wall part 39 is lower than 34 and 37, the bending strength of the bottom part 31 between the 1st convex part 32 and the 2nd convex part 35 can be improved. Since the bending strength can be ensured by the vertical wall portion 39, the thickness of the bottom portion 31 can be reduced, and the fixture 30 can be reduced in weight. Further, since the amount of the material constituting the fixture 30 can be reduced, the material cost of the fixture 30 can be reduced.

  As shown in FIGS. 10 and 11, the vertical wall portion 39 is formed with a tapered portion 40 at a position farther from the bottom portion 31 than the engaging portion 41. The taper part 40 is a part where the thickness gradually increases toward the engagement part 41. The taper portion 40 is set to be 1.5 to 2 times as thick as the thickest portion 40a (the portion adjacent to the engaging portion 41) and the thinnest portion 40b (the tip of the vertical wall portion 39). Therefore, depending on the distance between the claw portions 15 of the clip 7 (see FIG. 4), when the clip 7 (see FIG. 4) is attached to the fixture 30, the claw portion 15 and the taper portion move toward the engaging portion 41. Thus, the amount of elastic deformation of the extension piece 14 can be increased. As a result, it is possible to improve the mounting feeling when the clip 7 is mounted on the fixing tool 30 as compared with the case where the fixing tool 30 is not provided with the tapered portion 40.

  The engaging portion 41 is a portion where the claw portion 15 formed at the tip of the extending piece 14 of the clip 7 is engaged, and the thickness (the dimension in the short side direction of the bottom portion 31) is the thickest of the tapered portion 40. It is formed in a hollow shape smaller than the portion 40a. Further, the engaging part 41 is set to have a thickness larger than the thickness of the tip of the vertical wall part 39. This is because the pair of extending pieces 14 of the clip 7 are elastically deformed so that the claw portion 15 of the clip 7 is engaged with the engaging portion 41. In a state where the claw portion 15 of the clip 7 is engaged with the engagement portion 41, the claw portion 15 pinches the engagement portion 41 by the restoring force of the extension piece 14, so that the position is shifted in the short side direction of the fixture 30. The clip 7 can be fixed to the fixture 30 without any problem. That is, the clip 7 can be positioned and fixed in the thickness direction of the vertical wall portion 39. The engaging portion 41 is set such that the width (the dimension in the long side direction of the bottom portion 31) is smaller than the interval between the inner side surfaces 33 and 36 (see FIG. 8) at that height. This is to match the size of the extension piece 14 and the claw portion 15.

  In the engaging portion 41, the distance between the top surfaces 34 and 37 of the first convex portion 32 and the second convex portion 35 and the engaging portion 41 in the height direction is the distance from the leg portion 13 to the claw portion 15 of the clip 7. Is set the same as This is because the leg portion 13 of the clip 7 is brought into contact with the top surfaces 34 and 37 of the first convex portion 32 and the second convex portion 35 with the claw portion 15 of the clip 7 engaged with the engaging portion 41. Thereby, the clip 7 can be fixed to the fixing tool 30 without being displaced in the height direction of the fixing tool 30. That is, the clip 7 can be positioned and fixed in the height direction of the fixture 30.

  Next, with reference to FIG.12 and FIG.13, the fixing system 50 provided with the clip 7 and the fixing tool 30 is demonstrated. 12 is a front view of a fixing system 50 (the clip 7 and the fixing tool 30) in which the clip 7 is attached to the fixing tool 30, and FIG. 13 is a cross-sectional view of the fixing system 50 taken along line XIII-XIII in FIG.

  As shown in FIG. 12, the fixing tool 30 has inner surfaces 33 and 36 that are opposite to each other of the first convex portion 32 and the second convex portion 35 so as to have a shape corresponding to the shape of the extended piece 14 of the clip 7. Yes. Since the extended piece 14 of the clip 7 is disposed between the inner side surfaces 33 and 36 of the fixture 30 with the claw portion 15 engaged with the engaging portion 41, the width direction of the fixture 30 (the horizontal direction in FIG. 12). ) With respect to the clip 7.

  Since the inner surface 33,36 of the 1st convex part 32 and the 2nd convex part 35 is the inclined surface where the space | interval between the inner surface 33,36 becomes narrow gradually toward the bottom part 31, the fixing tool 30 is clipped on the fixing tool 30. When the 7 is mounted, the extended piece 14 of the clip 7 can be easily inserted between the inner side surfaces 33 and 36. Since the space between the inner side surfaces 33 and 36 guides the insertion of the extended piece 14 of the clip 7, workability for fixing the clip 7 to the fixture 30 can be improved.

  As shown in FIG. 13, the first convex portion 32 and the second convex portion 35 (see FIG. 12) have leg surfaces with the top surfaces 34 and 37 engaged with the engaging portion 41 of the claw portion 15 of the clip 7. 13, the clip 7 can be positioned with respect to the height direction of the fixture 30 (the vertical direction in FIG. 13). Since the first convex portion 32 and the second convex portion 35 can position the clip with respect to the height direction and the width direction (left and right direction in FIG. 12) of the fixture 30, after the seat pad 4 (see FIG. 3) is molded. The clip 7 can be positioned with respect to the depth direction (vertical direction in FIG. 3) and the length direction (vertical direction in FIG. 3) of the groove 8 of the seat pad 4. When the position of the clip 7 is shifted in the depth direction and the length direction of the groove portion 8 of the seat pad 4, the operation of locking the locking tool 9 provided on the back surface of the seat cover 6 (see FIG. 3) to the claw portion 15. There is a possibility that the workability of (the work of attaching the seat cover 6 to the seat pad 4) is lowered. Since this can be suppressed, the workability of mounting the seat cover 6 on the seat pad 4 can be ensured.

  Returning to FIG. The first convex portion 32 and the second convex portion 35 are such that the gap C1 between the extended piece 14 of the clip 7 and the inner side surfaces 33, 36 is on one side in a state where the claw portion 15 of the clip 7 is engaged with the engaging portion 41. The size is set to 0.15 mm or less. Since the gap C1 is narrow, it is possible to prevent a part of the material (liquid foamed synthetic resin) from entering the gap C1 between the extended piece 14 and the inner side surfaces 33 and 36 when the seat pad 4 is molded. When a part of the material enters the gap C1 and hardens and adheres to the extended piece 14 or the claw portion 15, the engaging member 9 provided on the back surface of the seat cover 6 (see FIG. 3) is engaged with the claw portion 15. The work of stopping (work of attaching the seat cover 6 to the seat pad 4) may be difficult. This is because the hardened material interferes with the operation of locking the locking tool 9 to the claw portion 15. Since this can be suppressed, the workability of mounting the seat cover 6 on the seat pad 4 can be ensured.

  In the fixture 30, the curvature of the arc-shaped curved surface 31a from the bottom 31 to the inner side surfaces 33, 36 is set smaller than the curvature of the arc on the tip side of the extending piece 14 of the clip 7 facing the curved surface 31a. . Thereby, the gap C2 between the extended piece 14 of the clip 7 and the curved surface 31a is set larger than the gap C1 between the extended piece 14 of the clip 7 and the inner side surfaces 33 and 36. When the clip 7 is attached to the fixture 30, the extended piece 14 is elastically deformed by interfering with the vertical wall portion 39. Therefore, by making the gap C2 larger than the gap C1, the elastically deformed extended piece 14 and the curved surface 31a. Can be prevented from interfering with each other. As a result, the mountability of the clip 7 to the fixture 30 can be ensured.

  When the gap C2 between the extended piece 14 of the clip 7 and the curved surface 31a is increased, a part of the material (liquid foam synthetic resin) is likely to enter the gap C2 when the seat pad 4 is molded. However, the claw portion 15 (see FIG. 13) is provided on the distal end side of the extended piece 14 of the clip 7, and the claw portion 15 engages (adheres) to the engagement portion 41. Even if (liquid foam synthetic resin) enters, the material cannot enter the inner surface side of the extended piece 14 beyond the claw portion 15. Therefore, it is possible to prevent the material that has entered beyond the claw portion 15 from interfering with the operation of locking the locking tool 9 to the claw portion 15, and to ensure the workability of mounting the seat cover 6 on the seat pad 4.

  As shown in FIG. 13, the first convex portion 32 and the second convex portion 35 have a gap between the extending piece 14 of the clip 7 and the bottom portion 31 in a state where the claw portion 15 of the clip 7 is engaged with the engaging portion 41. C2 is set to a height of 0.15 mm or less. Since the gap C3 is narrow, a part of the material (liquid foam synthetic resin) can be prevented from entering the gap C3 between the extended piece 14 and the bottom 31 when the seat pad 4 is molded. When a part of the material enters the gap C3 and hardens and adheres to the extension piece 14 or the claw portion 15, the engaging member 9 provided on the back surface of the seat cover 6 (see FIG. 3) is engaged with the claw portion 15. The work of stopping (work of attaching the seat cover 6 to the seat pad 4) may be difficult. Since this can be suppressed, the workability of mounting the seat cover 6 on the seat pad 4 can be ensured.

  The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed. For example, the shapes of the leg portion 13 and the extended piece 14 of the clip 7 described in the above embodiment are merely examples, and other shapes can naturally be adopted.

  In the above embodiment, the mold 20, the fixture 30, and the fixing system 50 for forming the seat pad 4 constituting the cushion pad 2 have been described. However, the present invention is not limited to this, and the seat constituting the back pad 3 is not necessarily limited thereto. Of course, it is possible to apply the fixture 30 and the fixing system 50 to a mold for forming the pad.

  In the above embodiment, the case where the fixing tool 30 is a separate member from the molding die 20 has been described. However, the present invention is not necessarily limited to this, and the fixing tool 30 can be formed integrally with the molding die 20 as a matter of course. is there. In addition, since the fixing tool 30 is formed of stainless steel, it can be made hard to wear by attaching and detaching the synthetic resin or metal clip 7, and durability can be secured.

  In the above embodiment, the clip 7 in which two sets of extending pieces 14 are provided side by side on the leg portion 13 is employed, and therefore, the fixture 30 that fixes the clip 7 is provided with two vertical wall portions 39. Explained. The number of vertical wall portions 39 provided on the fixture 30 is appropriately set according to the number of sets of extending pieces 14 provided on the clip 7.

  In the above-described embodiment, the fixture 30 has been described in which the vertical wall portion 39 is connected to the first convex portion 32 and the second convex portion 35 and the vertical wall portion 39 is connected to the bottom portion 31. However, it is not necessarily limited to this. For example, if the vertical wall portion 39 is connected to at least one of the first convex portion 32 and the second convex portion 35, the vertical wall portion 39 can naturally be separated from the bottom portion 31. If the vertical wall 39 is connected to the bottom 31, the vertical wall 39 can naturally be separated from the first and second convex portions 32 and 35.

  In the above embodiment, the case where the height of the vertical wall portion 39 and the height of the first convex portion 32 and the second convex portion 35 are set to be the same has been described, but the present invention is not necessarily limited to this. Of course, it is possible to make the vertical wall portion 39 lower than the height of the convex portion 32 and the second convex portion 35. If the leg portion 13 of the clip 7 is in contact with the top surfaces 34 and 37 of the first convex portion 32 and the second convex portion 35 with the claw portion 15 of the clip 7 engaged with the engaging portion 41 of the fixture 30. This is because the clip 7 can be positioned and fixed with respect to the height direction of the fixture 30.

4 Seat pad 6 Seat cover 7 Clip 8 Groove portion 9 Locking device 13 Leg portion 14 Extending piece 15 Claw portion 20 Mold 30 Fixing tool 31 Bottom portion 32 First convex portion 33 Inner side surface 34 Top surface 35 Second convex portion 36 Inside Side surface 37 Top surface 39 Vertical wall portion 40 Taper portion 41 Engagement portion 50 Fixing system C1, C3 Clearance

Claims (6)

A leg portion embedded in a seat pad having a groove portion in which a part of the seat cover is accommodated, a pair of extending pieces extending from the leg portion into the groove portion, and a front end side of the extending piece approach each other A clip that protrudes in the direction and includes a claw portion that locks a locking tool provided on the back surface of the seat cover;
A fixture for fixing the clip in the mold of the seat pad,
The fixture includes a bottom;
A first convex portion and a second convex portion protruding from the bottom portion at an interval from each other;
A vertical wall portion interposed between the pair of extending pieces, disposed between the first convex portion and the second convex portion;
An engagement portion provided on the vertical wall portion and engaged with the claw portion;
The first convex portion and the second convex portion are continuous with the bottom portion and extend along the height direction of the vertical wall portion;
A top surface that is continuous with the inner surface and abuts on the leg in a state in which the claw is engaged with the engaging portion;
The fixing system, wherein the extension piece is disposed between the inner side surface and the inner side surface in a state where the claw portion is engaged with the engaging portion.   The first convex portion and the second convex portion have such a size that a gap between the extending piece and the inner side surface is 0.15 mm or less on one side in a state where the claw portion is engaged with the engaging portion. The fixing system according to claim 1, wherein the fixing system is set.   The first convex portion and the second convex portion are set to a height at which a gap between the extending piece and the bottom portion is 0.15 mm or less in a state where the claw portion is engaged with the engaging portion. The fixing system according to claim 1, wherein the fixing system is provided. The vertical wall portion includes a tapered portion whose thickness gradually increases toward the engagement portion,
The fixing system according to any one of claims 1 to 3, wherein the taper portion has a thickness set to be 1.5 to 2 times that of the thinnest portion.   The said 1st convex part and the said 2nd convex part are the inclined surfaces where the space | interval between the said inner surfaces becomes narrow gradually as the said inner surface goes to the said bottom part. Fixing system as described in. A leg portion embedded in a seat pad having a groove portion in which a part of the seat cover is accommodated, a pair of extending pieces extending from the leg portion into the groove portion, and a front end side of the extending piece approach each other A fixing tool for fixing a clip, which protrudes in the direction and includes a claw portion for locking a locking tool provided on the back surface of the seat cover, in the mold of the seat pad,
The bottom,
A first convex portion and a second convex portion protruding from the bottom portion at an interval from each other;
A vertical wall portion interposed between the pair of extending pieces, disposed between the first convex portion and the second convex portion;
An engagement portion provided on the vertical wall portion and engaged with the claw portion;
The first convex portion and the second convex portion are continuous with the bottom portion and extend along the height direction of the vertical wall portion;
A fixing tool comprising: a top surface continuous with the inner side surface, which contacts the leg portion in a state where the claw portion is engaged with the engaging portion.

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