JP7284663B2 - Backing material, seat pad, and manufacturing method of backing material - Google Patents

Description

TECHNICAL FIELD The present invention relates to a backing material arranged on the back surface of a pad body, a seat pad in which the backing material is arranged on the back surface of the pad body, and a method for manufacturing the backing material.

The seat pad of a seat mounted on a vehicle such as an automobile has a cloth-like backing material placed on the back side of the pad body, which is a cushion material, in order to suppress noise and damage caused by friction with the frame. . Patent Literature 1 describes that a backing material is attached to a molding die for foam-molding a pad body made of soft foam, and the foam-molded pad body and the backing material are integrated. Furthermore, in Patent Document 1, a backing material is formed by fixing a wire (holding tool) to a cloth-like member with an adhesive tape or the like, and the backing material is attached to the molding die by holding the wire in a magnet provided in the molding die. are doing.

JP 2008-194957 A

However, in Patent Literature 1, it is difficult to find a mark for arranging the wire, which indicates where on the cloth-like member the wire should be arranged and the adhesive tape should be attached. Therefore, it is desired to facilitate the positioning of the holder (wire) with respect to the cloth-like member.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a backing material, a seat pad, and a manufacturing method of the backing material that can easily position a holder with respect to a cloth-like member.

In order to achieve this object, the back material of the present invention is arranged on the back surface of the pad body of a seat pad, and the first surface on the side of the pad body and the first surface are arranged in the thickness direction. a cloth-like member having a second surface located on the opposite side; a bottom on which the locking tool is placed when spread out on the floor; and at least one wall connected to the edge of the bottom and projecting a part of the first surface from the bottom. there is

Further, the method for manufacturing a back surface material of the present invention includes a cloth-like member having a first surface and a second surface located on opposite sides in the thickness direction, and a fastener arranged on the first surface. A method of manufacturing a backing material comprising: a bottom portion; at least one wall portion connected to an edge of the bottom portion and projecting a portion of the first surface from the bottom portion; and disposing the fastener on the first surface along the wall toward the bottom.

According to the backing material of claim 1, the cloth-like member includes a bottom and at least two walls that are connected to the edge of the bottom and have a portion of the first surface that protrudes from the bottom. . When the cloth-like member is laid out, the locking tool is placed on the bottom part, and when the locking tool is arranged on the first surface, the three-dimensional shape of the wall rising from the bottom part can be used as a mark or guide. This makes it easier to position the holder with respect to the cloth-like member.

The locking device has a wire partly provided with an annular portion. Two wall portions are provided facing each other so as to sandwich the annular portion, and the two wall portions sandwiching the annular portion are connected to each other by a connecting portion inside the annular portion. As a result, the movement of the annular portion in the opposing direction of the two wall portions is prevented by the wall portion, and the movement of the annular portion along the wall portion is prevented by the connecting portion, so that the annular portion can be moved in all directions with respect to the cloth-like member. movement can be regulated. Therefore, the wire can be easily positioned with respect to the cloth-like member.

According to the back surface material of claim 2, the cloth-like member includes the bottom and at least one wall that continues to the edge of the bottom and projects a part of the first surface from the bottom. . When the cloth-like member is laid out, the locking tool is placed on the bottom part, and when the locking tool is arranged on the first surface, the three-dimensional shape of the wall rising from the bottom part can be used as a mark or guide. This makes it easier to position the holder with respect to the cloth-like member.
The locking device has a wire partly provided with an annular portion. The annular portion is sandwiched between the wall portion and the bottom portion in a state in which the wall portion is laid down toward the bottom portion, and the wall portion and the bottom portion sandwiching the annular portion are connected to each other by the connecting portion inside the annular portion. As a result, the movement of the annular portion in the direction in which the wall portion and the bottom portion face each other is prevented by the wall portion and the bottom portion, and the movement of the annular portion along the bottom portion is prevented by the connecting portion. Can restrict movement in all directions. Therefore, the wire can be easily positioned with respect to the cloth-like member.

The seat pad according to claim 3 has the backing material according to claim 1 or 2 disposed on the back surface of the pad body, and has the same effect as the backing material according to claim 1 or 2. Play.

According to a fourth aspect of the present invention, there is provided a fabric-like member having a first surface and a second surface located opposite to each other in a thickness direction, and a fastener arranged on the first surface. A method of manufacturing a backing material. The cloth-like member has a bottom and at least two walls that are connected to the edge of the bottom and have a portion of the first surface protruding from the bottom. The fastener includes a wire partially provided with an annular portion. In the arranging step, the wire is arranged on the first surface along the wall towards the bottom , sandwiching the loop between the two facing walls. In the fixing step, the two wall portions sandwiching the annular portion in the arranging step are connected to each other by the connecting portion inside the annular portion. This makes it easier to position the wire with respect to the cloth-like member.
According to a fifth aspect of the present invention, there is provided a fabric-like member having a first surface and a second surface located on opposite sides in a thickness direction, and a fastener arranged on the first surface. A method of manufacturing a backing material. The cloth-like member has a bottom and at least one wall extending from the edge of the bottom and projecting a portion of the first surface with respect to the bottom. The fastener includes a wire partially provided with an annular portion. The placing step places the wire on the first side along the wall toward the bottom. In the fixing step after the arranging step, the wall portion is laid down toward the bottom portion to sandwich the annular portion between the wall portion and the bottom portion, and the wall portion and the bottom portion sandwiching the annular portion are connected to each other inside the annular portion. Connect by part. This makes it easier to position the wire with respect to the cloth-like member.

Fig. 2 is a cross-sectional view of a seat cushion to which a seat pad is attached according to the first embodiment; FIG. 4 is a front view of the backing material showing an enlarged portion where wires are arranged; FIG. 3 is a cross-sectional view of the backing material taken along line III-III of FIG. 2; (a) is a cut end view of the backing material taken along line IVa-IVa in FIG. 3, and (b) is a cross-sectional view of the backing material taken along IVb-IVb in FIG. FIG. 4 is a cross-sectional view of a molding die for molding a seat pad and a backing material; It is a front view of the back material in 2nd Embodiment. (a) is a cross-sectional view of the backing material taken along line VIIa-VIIa of FIG. 6, and (b) is a cross-sectional view of the backing material taken along line VIIb-VIIb of FIG. (a) is a front view of the backing material in the third embodiment, and (b) is a cross-sectional view of the backing material taken along line VIIIb-VIIIb of FIG. 8(a).

Preferred embodiments are described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a seat cushion 1 on which a seat pad 10 according to the first embodiment is attached, taken at the center in the left-right direction. In addition, in FIG. 1, the vicinity of the part|part which supports the thigh of a seated person from the downward direction among the seat cushions 1 is expanded and illustrated. For convenience of explanation, the up-down direction (up-down direction in FIG. 1), the front-back direction (left-right direction in FIG. 1), and the left-right direction (vertical direction in FIG. 1) viewed from a person seated on the seat cushion 1 are 1, the vertical direction, the front-rear direction, and the left-right direction.

As shown in FIG. 1, a seat cushion 1 is a portion of a seat mounted in an automobile on which a occupant sits. At the rear end of the seat cushion 1, a seat back (not shown) is arranged as a backrest for supporting the back and hips of the seated person.

The seat cushion 1 includes a seat pad 10 that is a cushion body as a base material of the seat cushion 1, a frame (not shown) to which the seat pad 10 is attached, and a skin material 2 that covers the seat pad 10. . The skin material 2 is a member made of fabric, synthetic leather, leather, or the like. A hook 3 made of metal or synthetic resin is attached to the edge of the skin material 2 .

The seat pad 10 includes a pad body 11 made of a soft foam (for example, soft polyurethane foam), which is a foamed synthetic resin molded body with high elasticity, a cloth-like back surface material 20 arranged on the back surface 13 of the pad body 11, It has A surface 12 of the pad main body 11 is a portion facing the seat cushion 1 when the seat occupant sits on the seat cushion 1 (surfaces on the upper side and the left side of the page of FIG. 1), and is covered with the upholstery material 2 . The back surface 13 of the pad main body 11 is the surface opposite to the front surface 12 in the thickness direction of the pad main body 11, and is a portion that is supported in close contact with the frame.

The pad main body 11 includes at least a lower thigh portion 14 that supports the thighs of the seated person from below, and an overhang portion 15 that faces the calves of the seated person. The lower leg 14 is a portion provided on the front side of the pad body 11 and is supported from below by the frame. The protruding portion 15 is a portion that protrudes downward from the front edge of the lower leg 14 and covers the front of the frame. The back surface 13 of the pad body 11 including the lower leg 14 and the projecting portion 15 is formed by combining a plurality of flat surfaces or curved surfaces or providing a plurality of irregularities on the flat surface or curved surface so as to conform to the shape of the frame. It is three-dimensionally formed.

The back surface material 20 is for suppressing the occurrence of abnormal noise and breakage of the seat pad 10 due to friction between the frame and the seat pad 10 , and is arranged on substantially the entire back surface 13 of the pad body 11 . The back surface material 20 includes a cloth-like member 21 made of a plurality of fibers and a wire 30 as a locking tool to which the hooks 3 of the upholstery material 2 are hooked.

The cloth-like member 21 is a thermoplastic cloth-like member, and in this embodiment, it is made of a non-woven fabric in which thermoplastic synthetic resin fibers are welded together. The cloth-like member 21 has a first surface 22 on the side of the pad body 11 and a second surface 23 located on the opposite side of the first surface 22 in the thickness direction.

The wire 30 is a metallic linear member having ferromagnetism, and is sufficiently harder than the cloth member 21 . It is embedded in the rear surface 13 side of the projecting portion 15 of the pad body 11 over substantially the entire length in the left-right direction, and is arranged on the first surface 22 of the cloth-like member 21 . A portion of the pad body 11 in which the wire 30 is embedded is exposed to be visible from the second surface 23 side by a through hole 21a that penetrates a portion of the cloth member 21 in the thickness direction. The upholstery material 2 is fixed to the seat pad 10 by hooking the hooks 3 of the upholstery material 2 on the wires 30 through the through holes 21a.

The backing material 20 will be described in more detail with reference to FIGS. 2 to 4(b). FIG. 2 is a front view of the backing member 20 viewed from the first surface 22 side, showing an enlarged portion where the wire 30 is arranged. FIG. 3 is a cross-sectional view of the backing material 20 taken along line III--III in FIG. FIG. 4(a) is a cut end view of the backing material 20 taken along line IVa-IVa of FIG. FIG. 4(b) is a cross-sectional view of the backing material 20 taken along line IVb-IVb of FIG. The backing material 20 in FIGS. 2 to 4B is in a state where it is not in close contact with the back surface 13 of the pad body 11 . For convenience of explanation, the up-down direction and the left-right direction of the paper surface of FIG. In this embodiment, the backing material 20 is formed symmetrically.

As shown in FIGS. 2 and 3, the wire 30 is formed with an annular portion 31 by bending both ends of the wire 30 . The cloth-like member 21 includes a body portion 24, a convex portion 25 on which the central portion of the wire 30 is placed, a bottom portion 26 on which the annular portion 31 is placed, and a wall portion that restricts movement of the annular portion 31 placed on the bottom portion 26. 27, 28, 29.

The body portion 24 is a portion of the cloth-like member 21 that comes into close contact with the plane when the periphery of the wire 30 is placed on the plane. The body portion 24 is provided with two through holes 21a separated from each other in the left-right direction. A wire 30 is arranged on the first surface 22 so that one wire 30 is bridged over each of the two through holes 21a.

As shown in FIGS. 2, 3, and 4A, the convex portion 25 is a portion that continues to the main body portion 24 and is provided between the two through holes 21a. A portion of the first surface 22 protrudes from the convex portion 25 with respect to the main body portion 24 . Therefore, the first surface 22 of the convex portion 25 is positioned higher than the first surface 22 of the main body portion 24 with respect to the second surface 23 of the main body portion 24 . The second surface 23 of the convex portion 25 is recessed along the first surface 22 of the convex portion 25 .

As shown in FIGS. 2, 3 and 4(b), the bottom portion 26 is formed by the loop of the wire 30 when the cloth member 21 is spread out so that the first surface 22 of the body portion 24 faces upward. It is a rectangular portion on which the portion 31 is placed. The bottom portion 26 is formed substantially parallel to the body portion 24 near the wire 30 . The bottom portion 26 includes a bottom surface 26a that is part of the first surface 22 and a bottom rear surface 26b that is part of the second surface 23 and is opposite to the bottom surface 26a. When the cloth-like member 21 is laid out, the annular portion 31 is placed on the bottom surface 26a. The bottom surface 26 a and the bottom rear surface 26 b are positioned higher than the first surface 22 of the body portion 24 with the second surface 23 of the body portion 24 as a reference. When the second surface 23 of the body portion 24 is used as a reference, the height of the bottom surface 26a and the height of the first surface 22 of the convex portion are substantially the same.

The walls 27 , 28 , and 29 are portions of the first surface 22 of the cloth member 21 that protrude with respect to the bottom portion 26 (bottom surface 26 a ), and restrict movement of the wire 30 with respect to the cloth member 21 . do. The wall portions 27 are arranged on both ends of the wire 30 in the length direction, and restrict movement of the wire 30 in the length direction with respect to the cloth member 21 . The wall portion 27 continues to the edges of the bottom portion 26 on both ends in the length direction of the wire 30 .

The wall portions 28 and 29 are portions arranged to face each other so as to sandwich the annular portion 31 , and restrict the radial movement of the wire 30 along the bottom portion 26 . The walls 27 , 28 , 29 are arranged in a U-shape (U-shape) when viewed from the thickness direction of the bottom 26 . Walls 28 and 29 continue to the edge of bottom 26 so that the . The edge of the bottom portion 26 that is not connected to the wall portions 27, 28, 29 forms the edge of the through hole 21a.

The first surfaces 22 of the walls 27, 28, and 29 include top surfaces 27a, 28a, and 29a positioned higher than the bottom surface 26a with respect to the bottom surface 26b, the top surfaces 27a, 28a, and 29a, and the bottom surface 26a. and outer wall surfaces 27c, 28c, and 29c that connect the top surfaces 27a, 28a, and 29a to the body portion 24, respectively. The second surfaces 23 of the walls 27, 28, 29 are composed of top surfaces 27a, 28a, 29a, inner wall surfaces 27b, 28b, 29b, and wall rear surfaces 27d, 28d, 29d recessed along the outer wall surfaces 27c, 28c, 29c. .

The top surfaces 27a, 28a, and 29a are portions that do not face the bottom surface 26a of the bottom portion 26, and face the same direction as the bottom surface 26a (Figs. 3 and 4B). An annular portion 31 is arranged in a portion surrounded by the inner wall surfaces 27b, 28b, 29b. An inner wall surface 28 b of the wall portion 28 and an inner wall surface 29 b of the wall portion 29 face each other in the axial direction of the annular portion 31 . In this state, when the bottom surface 26a is used as a reference, the height to the top surfaces 27a, 28a, and 29a is greater than the height of the annular portion 31. As shown in FIG. Thereby, the annular portion 31 can be accommodated in the portion surrounded by the walls 27, 28, 29 (inner wall surfaces 27b, 28b, 29b).

The wall portions 28 and 29 sandwiching the annular portion 31 are connected to each other by a connecting portion 33 inside the annular portion 31 . The connecting portion 33 in this embodiment is a synthetic resin pin (tag pin) that is often used to attach a tag such as a price tag to a product. The connecting portion 33 includes a shaft portion 33a that penetrates the walls 28 and 29 and the inner side of the annular portion 31, head portions 33b that are provided at both ends of the shaft portion 33a and protrude in the direction perpendicular to the axis of the shaft portion 33a, It has The wall portions 28 and 29 are connected to each other by the connection portion 33 by positioning the head portion 33 b outside the wall portions 28 and 29 .

According to the back surface material 20 as described above, the wall portions 28 and 29 sandwiching the annular portion 31 are connected by the connecting portion 33 , so that the wall portions 28 and 29 can be prevented from being separated from each other by the connecting portion 33 . Therefore, the wall portions 28 and 29 prevent the annular portion 31 from moving in the opposing direction of the wall portions 28 and 29 . This makes it easier to position the wire 30 with respect to the cloth-like member 21 .

Furthermore, since the wall portions 28 and 29 are connected to each other by the connecting portion 33 inside the annular portion 31, the axial movement of the annular portion 31 is prevented by the wall portions 28 and 29, and the wall portions 28 and 29 are prevented from moving in the axial direction. Movement of the annular portion 31 in the direction perpendicular to the axis is prevented by the connecting portion 33 . Thereby, the movement of the annular portion 31 in all directions with respect to the cloth member 21 can be suppressed. Therefore, the wire 30 can be more easily positioned with respect to the cloth-like member 21 .

Movement of the annular portions 31 at both ends of the wire 30 is prevented by the walls 28 and 29, respectively. That is, since the movement of the wire 30 is restricted at two locations, the entire wire 30 can be positioned with respect to the cloth member 21 . In particular, since the omnidirectional movement of the annular portions 31 at both ends of the wire 30 is prevented by the walls 28 and 29 and the connecting portion 33, the entire wire 30 can be positioned more easily with respect to the cloth member 21. .

Since the annular portion 31 is formed by bending both ends of the wire 30 into an annular shape, there is a risk that the connecting portion 33 may come off from a cut (tip of the wire 30 ) of the annular portion 31 located on the central side of the wire 30 . On the other hand, in this embodiment, the wall portions 27 located on both end sides of the wire 30 are connected to the wall portions 28 and 29 . Furthermore, even if one of the two annular portions 31 is pressed against the wall portion 27 to deform the wall portions 27, 28, and 29 surrounding one of the annular portions 31, the other of the two annular portions 31 will not be connected through the other cut. The positions of the wall portion 27 and the connecting portion 33 and the dimensions of the annular portion 31 are set so that the portion 33 does not come off. This can prevent the wire 30 from falling off from the cloth member 21 .

Next, a method for manufacturing the backing material 20 will be described. First, the planar cloth-like member 21 is subjected to heat press processing or the like to plastically deform the cloth-like member 21 (forming step). In this molding process, the convex portion 25, the bottom portion 26, and the like are three-dimensionally molded on the cloth-like member 21 so as to have substantially the same shape as the back surface 13 of the pad body 11. The wall portions 27, 28, 29 are three-dimensionally formed on the cloth-like member 21 so as to protrude. The through-holes 21a may be formed in the cloth-like member 21 at the same time as this molding process, or the through-holes 21a may be formed in the cloth-like member 21 before or after the molding process.

After the molding process, the wire 30 is arranged on the first surface 22 of the cloth-like member 21 along the walls 27, 28, 29 toward the bottom 26 (arrangement process). In this way, when the wire 30 is placed on the bottom portion 26 when the cloth-like member 21 is spread out, when the wire 30 is arranged on the first surface 22, the three-dimensional wall portions 27, 28, and 29 are arranged. , the wire 30 can be easily positioned with respect to the cloth-like member 21 because it can be used as a mark or guide for installing the wire 30 . In particular, the walls 27, 28 and 29, which serve as marks and guides, stand up in three directions on the bottom 26, and the wire 30 can be inserted into the portion surrounded by these walls 27, 28 and 29. Positioning of the wire 30 with respect to 21 can be made easier.

After the arranging step, the connecting portion 33, which is a pin made of synthetic resin, is driven into the wall portions 28 and 29 using a tag gun, the wall portions 28 and 29 are connected to each other inside the annular portion 31 by the connecting portion 33, and the wire is attached. 30 is fixed to the cloth-like member 21 (fixing step). Thus, the backing material 20 is manufactured.

Next, a method of manufacturing the seat pad 10 will be described with reference to FIG. FIG. 5 is a sectional view of the molding die 40 and the backing material 20 for molding the seat pad 10. As shown in FIG. FIG. 5 shows an enlarged part of a molding die 40 for molding the portion of the seat pad 10 shown in FIG. 1 upside down.

As shown in FIG. 5 , the mold 40 is a mold for molding the seat pad 10 and includes a lower mold 41 and an upper mold 43 . The lower mold 41 is provided with a lower molding surface 42 for mainly molding the surface 12 of the pad body 11 . The upper die 43 is provided with an upper molding surface 44 for mainly molding the back surface 13 of the pad body 11 . A cavity 47 is formed between the lower molding surface 42 and the upper molding surface 44 by placing the upper mold 43 on the lower mold 41 (upper side of the paper in FIG. 5) and closing the mold.

The upper molding surface 44 is provided with a convex molding surface 45 at a portion where the rear surface 13 of the projecting portion 15 is molded. The convex molding surface 45 is a part that protrudes from the upper molding surface 44 around the convex molding surface 45, and a magnet (permanent magnet or electromagnet) 46 is embedded in the tip (the part that the bottom part 26 hits).

To manufacture the seat pad 10 using the mold 40, first, with the lower mold 41 and the upper mold 43 opened, a ferromagnetic material such as a magnet, a pin, or the like is applied to substantially the entire surface of the upper molding surface 44. The cloth-like member 21 of the backing member 20 is brought into close contact. At this time, the second surface 23 of the convex portion 25 and the bottom rear surface 26 b of the bottom portion 26 are brought into close contact with the convex forming surface 45 to hold the wire 30 to the magnet 46 . Next, the lower mold 41 and the upper mold 43 are clamped, and the raw material liquid of the flexible foam is foamed and hardened in the cavity 47 to foam-mold the pad body 11 .

At the time of this foam molding, the cloth-like member 21 of the backing material 20 is foamed and cured while being impregnated with the raw material liquid. A backing material 20 is joined. In this manner, the seat pad 10 in which the backing material 20 is integrated with the soft foam pad main body 11 is manufactured.

According to the method of manufacturing the backing material 20 and the seat pad 10 as described above, the convex portions 25 and the bottom portions 26 and the like of the cloth-like member 21 attached to the upper molding surface 44 are formed in advance on the upper molding surface 44 (the pad body 11). It is three-dimensionally molded in substantially the same shape as the convex molded surface 45 of the back surface 13). As a result, the cloth-like member 21 can be easily attached to the upper molding surface 44 . Furthermore, since the wire 30 is fixed to the cloth-like member 21, the cloth-like member 21 is less likely to sag, and the rigidity of the backing member 20 can be ensured. Since the cloth-like member 21 can be made difficult to sag when the cloth-like member 21 is attached to the upper molding surface 44, the back material 20 can be easily attached to the upper molding surface 44.例文帳に追加

In addition, since the metal wire 30 can be held by the magnets 46 on the convex molding surface 45, the back material 20 can be easily attached to the upper molding surface 44. FIG. In the backing material 20 attached to the upper forming surface 44, the wires 30 are preliminarily positioned with respect to the cloth-like member 21 by the walls 27, 28, 29, the connecting portions 33, and the like. Therefore, it is possible to prevent the wire 30 from being displaced in the longitudinal direction with respect to the upper forming surface 44 and the cloth-like member 21 from being displaced with respect to the wire 30 held by the magnet 46 . As a result, it is possible to suppress deterioration in the formability of the pad main body 11 due to the wire 30 being displaced in the longitudinal direction and being sandwiched between the upper mold 43 and the lower mold 41. It is possible to suppress the occurrence of wrinkles or the like in the cloth-like member 21 after molding due to deviation of the three-dimensional shape of the upper molding surface 44 .

Since the wire 30 is arranged on the first surface 22 (on the cavity 47 side) of the cloth-like member 21 , the wire 30 can be embedded in the pad body 11 . As a result, even if the hook 3 of the upholstery material 2 is hooked on the wire 30 and the wire 30 is pulled, the wire 30 is less likely to come off from the seat pad 10 .

The bottom surface 26a of the bottom portion 26 on which the wire 30 is placed and the first surface 22 of the protrusion 25 are positioned higher than the first surface 22 of the main body portion 24 with the second surface 23 of the main body portion 24 as a reference. That is, of the back surface 13 of the pad body 11, the portion in which the wire 30 is embedded in close contact with the bottom surface 26a of the bottom portion 26 and the first surface 22 of the convex portion 25 is a portion in close contact with the main body portion 24 therearound. concave against. Thereby, a space can be provided between the portion of the seat pad 10 hardened by the wire 30 and the frame. This space makes it difficult for the wire 30 to rub against the frame, and makes it difficult for the hook 3 hooked on the wire 30 to be caught between the seat pad 10 and the frame.

Next, a second embodiment will be described with reference to FIGS. 6, 7(a) and 7(b). 1st Embodiment demonstrated the case where the annular part 31 was pinched|interposed between the wall parts 28 and 29. FIG. On the other hand, in the second embodiment, the case where the annular portion 31 is sandwiched between the wall portion 53 and the bottom portion 52 will be described. Note that the same reference numerals are given to the same parts as in the first embodiment, and the following description is omitted. FIG. 6 is a front view of the backing material 50 in the second embodiment. FIG. 7(a) is a cross-sectional view of the backing material 50 taken along line VIIa--VIIa of FIG. FIG. 7(b) is a cross-sectional view of the backing material 50 taken along VIIb-VIIb in FIG.

The back surface material 50 is a member that is arranged substantially over the entire back surface 13 (see FIG. 1) of the pad body 11 . The back material 50 includes a cloth-like member 51 made of a plurality of fibers and a wire 30 . The cloth-like member 51 is a member having thermoplasticity, and in this embodiment, it is made of a nonwoven fabric in which fibers made of a thermoplastic synthetic resin are welded together.

The cloth-like member 51 includes a body portion 24 , a bottom portion 52 on which the annular portion 31 is placed, and a wall portion 53 that restricts movement of the annular portion 31 placed on the bottom portion 52 . The bottom portion 52 is a rectangular portion on which the annular portion 31 of the wire 30 is placed when the cloth-like member 51 is laid out so that the first surface 22 of the main body portion 24 faces upward. Also, the bottom portion 52 is a portion of the main body portion 24 that comes into close contact with the plane when the periphery of the wire 30 of the cloth-like member 51 is placed on the plane.

The bottom portion 52 includes a bottom surface 52a that is part of the first surface 22 and a bottom rear surface 52b that is part of the second surface 23 and is opposite to the bottom surface 52a. When the cloth-like member 51 is laid out, the annular portion 31 is placed on the bottom surface 52a.

The wall portion 53 is a portion of the first surface 22 of the cloth member 51 that protrudes from the bottom portion 52 (bottom surface 52 a ), and restricts movement of the wire 30 with respect to the cloth member 51 . The wall portion 53 continues to the edges of the bottom portion 52 on both ends in the length direction of the wire 30 . The wall portion 53 faces the bottom portion 52 with the wire 30 interposed therebetween.

The first surface 22 of the wall portion 53 includes a top surface 53a positioned higher than the bottom surface 52a with respect to the bottom surface 52b, an inner wall surface 53b connecting the top surface 53a and the bottom surface 52a, and the top surface 53a. and an outer wall surface 53c that connects the body portion 24 other than the bottom portion 52 . The second surface 23 of the wall portion 53 includes a top surface 53a, an inner wall surface 53b, and a wall rear surface 53d recessed along the outer wall surface 53c.

The top surface 53a is a portion that does not face the bottom surface 52a of the bottom portion 52, and faces the same direction as the bottom surface 52a (upper side of the paper in FIGS. 7A and 7B). The annular portion 31 is arranged between the inner wall surface 53b and the bottom surface 52a, and the inner wall surface 53b and the bottom surface 52a face each other in the axial direction of the annular portion 31. As shown in FIG.

In order to manufacture such a backing material 50, first, the planar cloth-like member 51 is subjected to heat press processing or the like to plastically deform the cloth-like member 51 (forming step). In this molding process, the cloth-like member 51 is three-dimensionally molded so as to have substantially the same shape as the rear surface 13 of the pad body 11 , and the wall portion 53 is formed such that a portion of the first surface 22 protrudes from the bottom portion 52 . is three-dimensionally molded into the cloth-like member 51 . In the molding step, the wall portion 53 is projected in the thickness direction of the bottom portion 52 (main body portion 24) with respect to the bottom portion 52 (main body portion 24), as indicated by a two-dot chain line in FIG. 7(b).

After the molding step, the annular portion 31 of the wire 30 is arranged on the first surface 22 of the cloth-like member 51 toward the bottom portion 52 along the wall portion 53 rising in the thickness direction of the bottom portion 52 (placement step). In this manner, the three-dimensional wall portion 53 can be used as a mark or guide for installing the wire 30 , so that the wire 30 can be easily positioned with respect to the cloth-like member 51 .

After the arranging step, the wall portion 53 is laid down to the bottom portion 52 side, the annular portion 31 is sandwiched between the wall portion 53 and the bottom portion 52, and the wall portion 53 and the bottom portion 52 are thermally welded inside the annular portion 31 ( fixing step). By this heat welding, the wall portion 53 and the bottom portion 52 are connected inside the annular portion 31 by the connecting portion 54 formed near the interface between the wall portion 53 and the bottom portion 52 , and the annular portion 31 is attached to the cloth member 51 . Fixed.

As a result, movement of the annular portion 31 in the axial direction (the direction in which the wall portion 53 and the bottom portion 52 face each other) is prevented by the wall portion 53 and the bottom portion 52, and movement of the annular portion 31 along the bottom portion 52 in the direction perpendicular to the axis is prevented. Movement is impeded by connection 54 . As a result, omnidirectional movement of the annular portion 31 with respect to the cloth-like member 51 can be suppressed, so that the wire 30 can be easily positioned with respect to the cloth-like member 51 .

Next, a third embodiment will be described with reference to FIGS. 8(a) and 8(b). In the first and second embodiments, the case where the wire 30 is arranged on the first surfaces 22 of the cloth members 21 and 51 has been described. On the other hand, in the third embodiment, the case where the hook-and-loop fastener 62 is arranged on the first surface 22 of the cloth-like member 61 will be described. The same parts as those in the first and second embodiments are denoted by the same reference numerals, and the description below is omitted. FIG. 8(a) is a front view of the backing material 60 in the third embodiment. FIG. 8(b) is a cross-sectional view of the backing material 60 taken along line VIIIb-VIIIb of FIG. 8(a).

The back surface material 60 is a member that is arranged substantially over the entire back surface 13 (see FIG. 1) of the pad body 11 . The back material 60 includes a cloth-like member 61 made of a plurality of fibers in a cloth-like shape, and hook-and-loop fasteners (locking tools) 62 arranged on the first surface 22 of the cloth-like member 61 . The cloth-like member 61 is a member having thermoplasticity, and in this embodiment, is made of a nonwoven fabric in which fibers made of a thermoplastic synthetic resin are welded together.

The cloth-like member 61 includes a body portion 24, a bottom portion 52 on which both ends of the hook-and-loop fastener 62 are placed, and wall portions 27, 28, and 29 that restrict movement of the hook-and-loop fastener 62 placed on the bottom portion 52. ing. The walls 27, 28, 29 of the third embodiment are different in shape and size from the walls 27, 28, 29 of the first embodiment, but have the same function.

The hook-and-loop fastener 62 spans through the through holes 21a formed in the cloth-like member 61, and is visibly exposed from the second surface 23 side. The hook-and-loop fastener 62 is for attaching the backing material 60 to the mold 40 by engaging it with a hook-and-loop fastener provided in place of the magnet 46 of the mold 40 of the first embodiment shown in FIG. The surface fastener 62 is engaged with a surface fastener provided instead of the hook 3 of the surface material 2 of the first embodiment shown in FIG. It is for

In order to manufacture such a backing material 60, first, a planar cloth-like member 61 is subjected to heat press processing or the like to plastically deform the cloth-like member 61 (forming step). In this molding process, the cloth-like member 61 is three-dimensionally molded so as to have substantially the same shape as the rear surface 13 of the pad body 11 , and the wall portion 27 is formed such that a portion of the first surface 22 protrudes from the bottom portion 52 . , 28 and 29 are three-dimensionally molded into the cloth-like member 61 .

After the molding process, the hook-and-loop fastener 62 is placed on the first surface 22 of the cloth-like member 61 along the walls 27, 28, 29 toward the bottom part 52 (placement process). In this manner, the three-dimensional walls 27 , 28 , 29 can be used as marks or guides for installing the hook-and-loop fastener 62 , so that the hook-and-loop fastener 62 can be easily positioned with respect to the cloth-like member 61 .

After the placement step, synthetic resin pins 63 are driven into the hook-and-loop fastener 62 and the bottom portion 52 using a tag gun, and the pin 63 fixes the hook-and-loop fastener 62 to the bottom portion 52 (fixing step). The pin 63 is substantially the same member as the connecting portion 33 in the first embodiment. and a head portion 63b projecting in a right angle direction. The backing member 60 is manufactured by fixing the hook-and-loop fastener 62 to the cloth-like member 61 by the pin 63 .

The present invention has been described above based on the embodiments, but the present invention is not limited to the above-described embodiments, and it is easily understood that various modifications and improvements are possible without departing from the scope of the present invention. It can be inferred. For example, the shape and dimensions of each part of the pad main body 11 and the backing materials 20, 50, 60 may be changed as appropriate. The arrangement of the wires 30 and hook-and-loop fasteners 62 with respect to the cloth-like members 21, 51, 61 may be changed as appropriate. Both the wire 30 and hook-and-loop fastener 62 may be arranged on the shaped members 21 , 51 , 61 . An annular portion 31 may be provided in the central portion of the wire 30 .

Although the seat cushion 1 of the seat mounted in the automobile has been described in the above embodiment, the present invention is not necessarily limited to this. The seat cushion 1 may be used for a seat portion of a seat mounted on a vehicle other than an automobile such as an industrial vehicle or a railroad vehicle, an aircraft, a ship, or the like, or a seat portion of furniture or the like. Further, the backing materials 20, 50, 60 may be provided not only on the seat cushion 1 but also on a seat pad of a seat back as a backrest.

In the above embodiment, the cloth-like members 21, 51, 61 are made of non-woven fabric in which thermoplastic synthetic resin fibers are fused together, but the present invention is not limited to this. The cloth-like members 21, 51, 61 may be non-woven fabrics in which various fibers are bound together with a thermoplastic synthetic resin binder. Moreover, the cloth-like members 21, 51, 61 may be formed of not only non-woven fabric but also thermoplastic cloth-like members such as coarse blankets, cheesecloth, felt, woven and knitted fabrics, or laminated composites thereof. . In addition, the cloth-like members 21 , 51 , 61 may be woven or bonded with wires of synthetic resin, metal, etc., which are sufficiently finer and softer than the wires 30 .

In the above-described first embodiment, a case has been described in which the connecting portion 33 connecting the wall portions 28 and 29 is a synthetic resin pin (tag pin), but the present invention is not necessarily limited to this. The wall portions 28 and 29 may be thermally welded together as in the second embodiment to form the connection portion 54 . Also, the wall portion 53 and the bottom portion 52 of the second embodiment may be connected by the connecting portion 33 . Examples of other connecting portions include a staple, an adhesive layer made of an adhesive, a thread for sewing the walls 28 and 29, and the like. Further, the hook-and-loop fastener 62 and the cloth-like member 61 of the third embodiment may be fixed by heat welding, adhesion, stapling, sewing, or the like. Further, the hook-and-loop fastener 62 may be arranged between the wall portions 28 and 29 connected by the connecting portions 33 and 54 or between the wall portion 53 and the bottom portion 52 .

Note that the connecting portions 33 and 54 may be positioned outside the annular portion 31 if there is a portion of the wire 30 between the connecting portions 33 and 54 and the bottom portions 26 and 52 . Also, the connecting portions 33 and 54 may be omitted. When the wire 30 is not fixed to the cloth members 21 and 51 by the connecting portions 33 and 54, the wall portions 27, 28, 29 and 53 are used as marks when the cloth members 21 and 51 are attached to the upper forming surface 44. The wire 30 can be fixed to the cloth members 21 and 51 by holding the wire 30 on the magnet 46 while arranging the wire 30 on the first surface 22 of the cloth members 21 and 51 as a guide.

The first and second embodiments described the case where the locking device is the wire 30, and the third embodiment described the case where the locking device is the hook-and-loop fastener 62, but the present invention is not necessarily limited to this. . A plate-like magnet attached to the first surface 22 of the cloth-like members 21, 51, 61 may be used as the locking member. The backing members 20 , 50 , 60 can be attached to the upper molding surface 44 by holding the magnets on the metal molding die 40 or the magnets 46 provided on the molding die 40 .

In the above-described first embodiment, the case where the wire 30 is held by the magnet 46 provided on the molding die 40 has been described, but the present invention is not necessarily limited to this. Instead of the magnet 46, a clip for gripping the wire 30 may be provided on the mold 40 and the wire 30 may be held by the clip through the through hole 21a. By forming the pad body 11 with the wire 30 held by the clip, the portion of the wire 30 held by the clip can be easily exposed. Thereby, the hook 3 of the upholstery material 2 can be easily hooked on the wire 30 . The wire 30 held by the magnet 46 may be made of synthetic resin mixed with ferromagnetic powder. Also, the wire 30 held by the clip may be made of metal or synthetic resin that does not have ferromagnetism.

In the above embodiment, the backing materials 20, 50, 60 (the cloth-like members 21, 51, 61) are attached to the pad body 11 by a part of the soft foam hardened while intruding between the fibers of the cloth-like members 21, 51, 61. Although the case where they are joined has been described, the present invention is not necessarily limited to this. After foam-molding the pad body 11 , the backing materials 20 , 50 , 60 may be adhered to the back face 13 of the pad body 11 .

Further, when the backing materials 20, 50, 60 are adhered to the pad main body 11, the pad main body 11 may be made of a cushioning material other than soft foam. Examples of cushioning materials other than soft foam include chip urethane, synthetic resin fibers cured (bonded) with a binder such as urethane, and synthetic resin fibers fused together by heat. etc. Also, these cushion materials may be used in combination.

10 seat pad 11 pad main body 13 rear surface 20, 50, 60 rear surface material 21, 51, 61 cloth-like member 22 first surface 23 second surface 26, 52 bottom portion 27, 28, 29, 53 wall portion 30 wire (locking tool )
31 annular portion 33, 54 connecting portion 62 hook-and-loop fastener (locking tool)

Claims (5)

A backing material arranged on the back side of the pad body of the seat pad,
a cloth-like member having a first surface on the side of the pad body and a second surface located on the opposite side of the first surface in the thickness direction;
a locking tool arranged on the first surface of the cloth-like member;
The cloth-like member has a bottom portion on which the locking tool is placed when the cloth-like member is spread out, and
At least two wall portions that extend from the edge of the bottom portion and project a portion of the first surface with respect to the bottom portion ,
The locking tool includes a wire partly provided with an annular part,
The two wall portions are provided facing each other so as to sandwich the annular portion,
The back surface material, wherein the two wall portions sandwiching the annular portion are connected to each other by a connecting portion inside the annular portion . A backing material arranged on the back side of the pad body of the seat pad,
a cloth-like member having a first surface on the side of the pad body and a second surface located on the opposite side of the first surface in the thickness direction;
a locking tool arranged on the first surface of the cloth-like member;
The cloth-like member has a bottom portion on which the locking tool is placed when the cloth-like member is spread out, and
at least one wall part that extends from the edge of the bottom part and projects a part of the first surface with respect to the bottom part ,
The locking tool includes a wire partly provided with an annular part,
The annular portion is sandwiched between the wall portion and the bottom portion in a state in which the wall portion is laid down toward the bottom portion,
The back surface material, wherein the wall portion and the bottom portion sandwiching the annular portion are connected to each other by a connecting portion inside the annular portion . A seat pad in which the backing material according to claim 1 or 2 is arranged on the back surface of the pad body. A method for manufacturing a backing material comprising a fabric member having a first surface and a second surface located on opposite sides in the thickness direction, and a fastener arranged on the first surface, the method comprising:
The cloth-like member comprises a bottom, and at least two walls connected to the edge of the bottom and projecting a part of the first surface with respect to the bottom,
The locking tool includes a wire partly provided with an annular part,
an arrangement step of arranging the wire on the first surface along the wall portion toward the bottom portion and sandwiching the annular portion between the two wall portions provided facing each other;
and a fixing step of connecting the two wall portions sandwiching the annular portion in the arranging step with a connecting portion inside the annular portion. A method for manufacturing a backing material comprising a fabric member having a first surface and a second surface located on opposite sides in the thickness direction, and a fastener arranged on the first surface, the method comprising:
The cloth-like member comprises a bottom, and at least one wall connected to the edge of the bottom and projecting a part of the first surface from the bottom,
The locking tool includes a wire partly provided with an annular part,
an arrangement step of arranging the wire on the first surface along the wall toward the bottom;
After the arranging step, the wall portion is laid down toward the bottom portion to sandwich the annular portion between the wall portion and the bottom portion, and the wall portion and the bottom portion sandwiching the annular portion are separated from each other by the annular portion. A method of manufacturing a backing material, comprising : a fixing step of connecting each other by a connecting portion inside the portion .

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