JP5667859B2 - Sub-material for sheet-like vehicle, member for vehicle, and manufacturing method thereof - Google Patents

Description

  The present invention relates to a sheet-like vehicular material attached to the back side of a cushion body, a vehicular member, and a manufacturing method thereof.

  Conventionally, in order to prevent the generation of rubbing noise between cushions such as seats (seats and backrests) and armrests and metal members such as frames, a sheet-like vehicle auxiliary material is integrally foamed on the back side of the cushions. Such vehicular members are known. By the way, since the shape of the back surface side of the cushion body has a complicated three-dimensional curve, for example, the inner side of the mold for manufacturing the cushion body also has an uneven portion of a complicated shape. Therefore, when integrally foam-molded using a single sheet-like vehicular auxiliary material that has not been processed at all, the vehicular auxiliary material cannot follow the complicated mold shape, and the complicated uneven shape on the back of the cushion body Can not be attached to the frame.

  For this reason, in the prior art, for example, in order to obtain a complicated uneven shape on the back surface of the cushion body, sewing as shown in FIGS. 4A and 4B is performed, and the uneven shape is imparted to the vehicular auxiliary material. Techniques are commonly used. Here, FIG. 4 (A) is a plan view for explaining a state before sewing the cut piece 3 of the same material as the auxiliary material main body 1a on the auxiliary material main body 1a for the vehicle, and FIG. 4 (B) is after sewing. The perspective view of the principal part of the subsidiary material 1 for vehicles is shown. That is, in this method, the opening 2 is formed in the vehicular auxiliary material 1 at a position corresponding to the convex portion 23 of the upper mold, and cutting is performed as shown in FIG. 4B according to the shape of the concave and convex portion of the mold. A box-shaped secondary material 3 ′ in which the side 3 a and the side 3 b of the piece 3 are sewn is applied to the opening 2 and sewn on the vehicle secondary material main body 1 a. In FIG. 4, reference numeral 4 is a hole for fastening the vehicular auxiliary material 1 to a plurality of set pins erected on the inner peripheral edge of the upper mold, and reference numeral 5 is provided inside the upper mold. An opening corresponding to the projected portion, number 6 indicates a sewing line for the vehicular auxiliary material body 1a and the box-shaped auxiliary material 3 ′.

Moreover, what gave the unevenness | corrugation which fits the unevenness | corrugation of a metal mold | die by the hot press to the whole auxiliary material for vehicles is also known.
Conventionally, for example, Patent Literature 1 and Patent Literature 2 are known as technologies related to the vehicular auxiliary material.

JP 2006-1147 A Japanese Patent Laid-Open No. 5-130923

  However, in sewing (Patent Document 1), it costs for each process, such as one sewing unit, and even flipping over the sewing work. Factors that increase the number of work steps and increase the cost for complex mold shapes It was. In addition, even if a large number of work steps and costs are required, there is a drawback that it is not possible to make close contact with the inner shape of the mold during integral foam molding.

  In the hot press (Patent Document 2), the formed secondary material is expensive, heavy, and fixed in shape, and thus requires a large space for storage and storage.

  The present invention has been made in consideration of the above, and even in the case of a complicated mold shape, it is possible to reduce or omit sewing without using a conventional hot-pressed product, An object of the present invention is to provide a low-cost sheet-like vehicular auxiliary material used by being set in a mold, a vehicular member using the vehicular auxiliary material, and a manufacturing method thereof.

  The sheet-like vehicle auxiliary material of the present invention is a sheet-like vehicle auxiliary material used when manufacturing a vehicle member using an upper mold and a lower mold in which a set pin is erected on the inner peripheral edge. In addition to having cuts, at least cuts facing each other across the cuts have holes or cutouts for overlapping the cuts on the mounting pins.

  According to the present invention, even in the case of a complicated mold shape, it is possible to reduce or omit the sewing without using a conventional hot press product, and it is possible to reduce and omit the sewing. There are obtained a sheet-like vehicular auxiliary material, a vehicular member using the vehicular auxiliary material, and a manufacturing method thereof.

  In addition, since the auxiliary material of the present invention is not fixed in shape, it is brought into close contact with the mold by the foaming pressure of the urethane foam stock solution. Uneven shape can be produced. Furthermore, since it is not bulky like a hot press product, it does not take up space for storage.

FIG. 1 is an explanatory view of a secondary material for a sheet-like vehicle according to the present invention. FIG. 2 is an explanatory view of a mold according to the present invention. FIG. 3 is a cross-sectional view of the vehicle member according to the present invention. FIG. 4 is an explanatory view of a conventional secondary material for a sheet-like vehicle. FIG. 5 is an explanatory view showing an example of cuts, holes and cutouts provided in the sheet-like vehicular auxiliary material according to the present invention.

Hereinafter, the Example of the auxiliary material for sheet-like vehicles concerning the present invention is described.
1 (A) and 1 (B) are explanatory views of a sheet-like vehicle auxiliary material, FIG. 1 (A) is a plan view, and FIG. 1 (B) is an illustration of the sheet-like vehicle auxiliary material of FIG. 1 (A). It is a fragmentary perspective view of the state where the cut sides of the cut portion were overlapped.

  Reference numeral 11 in the figure indicates a sheet-like vehicle auxiliary material made of a nonwoven fabric. A plurality of holes 13a for mounting the auxiliary material 11 on a plurality of set pins 12 standing on the inner side of an upper mold, which will be described later, are provided at the edge of the auxiliary material 11. In addition, V-shaped cuts 14 are formed in the left and right symmetrical positions on the edge of the secondary material 11 in order to deal with the complicated uneven part inside the mold. Holes 13b are formed in the cut sides (sides formed by the cut) 11a and 11b facing each other with the cut 14 interposed therebetween so as to overlap the cut sides with the set pin 12. In addition, the number 15 is an opening part (cutout part) corresponding to the convex part 18 provided inside the upper metal mold | die.

  The auxiliary material 11 having such a configuration is used by being set inside the upper mold 16 among the cushion body molding mold including the upper mold 16 and the lower mold 17 shown in FIG. That is, since a plurality of set pins 12 are provided on the peripheral edge of the upper mold 16 so as to hold the secondary material 11, holes formed in the edge portions of the secondary material 11 are provided in these set pins 12. It is locked (set) by fitting 13a and 13b. At this time, the hole 13a may be simply inserted into the set pin 12. On the other hand, in the case of the holes 13b facing each other with the notch 14 interposed therebetween, as shown in FIG. 1B, after inserting one notch side 11a facing the notch 14 into the set pin 12, the other notch side 11b Is overlapped by being inserted into the set pin 12 so as to overlap the hole 13b of the cut edge 11a. The notches 11 a and 11 b are locked to the set pin 12, so that a recess corresponding to the protrusion 23 provided on the upper mold 16 can be formed.

  The vehicle member is manufactured as follows using, for example, the cushion body molding die of FIG. First, the auxiliary material 11 is overlapped by inserting the hole 13a of the auxiliary material 11 into the set pin 12 and inserting the hole 13b between the cut sides 11a and 11b into the set pin 12 near the notch 14, Set inside mold 16. Subsequently, after supplying the polyurethane foam stock solution into the lower mold 17, the upper mold 16 is closed. Thereafter, the polyurethane foam stock solution is foam-filled in a cavity formed between the upper mold 16 and the lower mold 17, and when the mold is removed, the secondary material 11 is integrally foamed on the back side of the cushion body 19 as shown in FIG. The molded vehicle member 20 is obtained.

  The sheet-like vehicle auxiliary material according to the above embodiment has left and right V-shaped cuts 14 at the edge of the auxiliary material 11 so as to correspond to the inner convex portion 23 of the cushion mold as shown in FIG. In addition to being provided at symmetrical positions, the cut sides 11 a and 11 b facing each other with the cut 14 are provided with holes 13 b for overlapping the cut sides to the set pin 12. Therefore, even when the auxiliary material 11 is set on the upper mold 16 of the cushion-molding mold having a complicated shape, one notch side 11a is inserted into the set pin 12 as shown in FIG. After that, by inserting the other cut side 11b into the set pin 12 so as to overlap with the cut side 11a, it can be easily stacked, and can follow the complicated uneven part inside the mold. That is, it is possible to obtain a low-cost sheet-like vehicle auxiliary material that can deal with a complicated mold shape without using a hot-pressed product as in the prior art, and can reduce or omit sewing. .

  In addition, the cut edges 11a and 11b which are overlapped with a small amount of polyurethane foaming solution exuded from the gap between the holes 13b of the cut edges 11a and 11b overlapped with the set pin 12 and the set pin 12 when integrally foamed are bonded. The shape can be maintained in the same manner as the conventional auxiliary material 1 that has been sewn.

  In the above embodiment, the case where the cut is V-shaped has been described. However, the present invention is not limited to this, and various forms of cut shown in FIGS. 5A to 5T can be employed, for example. That is, in the case of the slit 21 in which the cut is perpendicular or inclined to the side of the edge of the auxiliary material (shown in FIGS. 5A and 5B), the slit 21 is bent in the middle (FIG. 5C). When the V-shaped cut 14 is bent halfway (shown in FIG. 5D), or when the cut 14 has a curved portion 14a (shown in FIG. 5E), the cut 14 is In the case of a circular shape (shown in FIG. 5 (F)), if the cut 14 is triangular (shown in FIG. 5 (G)), the cut is a slit 21 and the tip is triangular, circular, square, star, rhombus shaped When cut out (shown in FIGS. 5 (H) to 5 (L)), when the tip of the V-shaped cut 14 is cut out into a circular or triangular shape (shown in FIGS. 5 (M) and (N)) When the slit is a slit 21 having a certain width (shown in FIG. 5 (O)), When the holes 13b having different sizes are formed in the cut edges 11a and 11b facing each other (as shown in FIG. 5 (P)), the cut is the slit 21 and the other cut edge 11a is notched. When 22 is formed (shown in FIG. 5 (Q)), when the cut is formed by the slit 21 and the cut sides 11a and 11b face each other (not shown in FIG. 5 (R)), the cut is made. Is a slit 21 and the cut-out sides 11a and 11b facing each other are formed with cutouts 22 having different sizes (shown in FIG. 5 (S)), the V-shaped cut-out 14 and the other cut-out side 11a. In the case where the notch 22 is formed in (see FIG. 5 (T)).

  5 (R) and 5 (S), when notches are formed in the cut sides facing each other through the slit 21, if the cut sides are locked to the set pins, the frictional force between the cut sides is obtained. However, the cut edges may be temporarily fixed with an adhesive tape or an adhesive spray.

  FIG. 5 illustrates elements of claims 2 to 5, respectively, and is not limited to this, and can be freely combined. Note that the notch is not limited to the outer peripheral edge of the auxiliary material, and may be provided, for example, at the edge of the opening (cutout) 15 as necessary. These can be appropriately changed in accordance with the back surface shape of the cushion body.

  Further, the set pin used for setting the cut edge can be adjusted in the shape and thickness of the head of the set pin so that it is difficult to come off according to the size and shape of the hole or notch.

  In the above-described embodiment, only the case where the cuts formed in the auxiliary material are formed one by one symmetrically corresponding to the convex portion 23 of the upper mold is described. According to the complexity of the shape of the back surface of the cushion body, it may be provided at one place, or may be provided as appropriate by forming cuts at three or more places. Moreover, although the case where two cut sides were piled up was described, it is not restricted to this, You may pile up three or more cut sides on one set pin. Furthermore, it is possible to use sewing together with the vehicular auxiliary material of the present invention. Furthermore, although the case where the nonwoven fabric was used as a material of an auxiliary material was described, not only this but a conventionally used thing, such as a rough blanket, a felt, a cold water bottle, may be used.

  In addition, the conventionally known methods such as punching and NC cutting can be used for the cutting and cutting of the auxiliary material.

According to the present invention, for example, in conventional sewing, it costs 5 yen for one sewing and 2 yen for turning over the sewing. . In recent years when cost reduction is required in units of 1 yen, if this cushion body is produced 10,000 pieces / month, it will be effective if it can be further deployed to other cushion bodies. It is clear that it is obvious. Further, it is possible to prevent rubbing noise as in the prior art, and to perform integral foam molding by following a complicated mold shape without using a hot press product and even if the sewing is reduced or omitted.
The invention described in the original claims is appended below.
[1]
It is a secondary material for a sheet-like vehicle used when manufacturing a vehicle member using an upper mold having a set pin upright on the inner peripheral edge, and a lower mold,
A sheet-like vehicle auxiliary material having notches and at least notches facing each other across the notches and having holes or notches for overlapping the notches on the set pin.
[2]
The sheet-like vehicle auxiliary material according to [1], wherein the cut is V-shaped.
[3]
The sheet-like vehicle auxiliary material according to [1], wherein the cut is slit-shaped.
[4]
The sheet-like vehicle auxiliary material according to any one of [1] to [3], wherein the cut has a bent portion and / or a curved portion.
[5]
[2] The sheet-like vehicle submaterial according to any one of [1] to [4], wherein the cut end is cut into a circle, an ellipse, a triangle, a polygon, or a star.
[6]
A cushion body of any one of a seat cushion, a seat back, and an armrest, and a seat-like vehicle auxiliary material according to any one of [1] to [5], which is integrally foam-molded on the back surface side of the cushion body. A vehicle member.
[7]
[1] to [5] The auxiliary material for a sheet-like vehicle according to any one of [1] to [5] is engaged with a set pin and set inside the upper mold, and after supplying the urethane foam stock solution into the lower mold, the upper mold A method for manufacturing a vehicle member, characterized in that the foam is closed and integrally foamed.

  DESCRIPTION OF SYMBOLS 11 ... Sheet-like vehicle auxiliary material, 11a, 11b ... Cut edge, 12 ... Set pin, 13a, 13b ... Hole, 14 ... V-shaped cut, 15 ... Opening part, 16 ... Upper die, 17 ... Lower die Mold, 18, 23 ... convex part, 19 ... cushion body, 20 ... vehicle member, 21 ... slit, 22 ... notch.

Claims (7)

It is a secondary material for a sheet-like vehicle used when manufacturing a vehicle member using an upper mold having a set pin upright on the inner peripheral edge, and a lower mold,
A sheet-like vehicle auxiliary material having notches and at least notches facing each other across the notches and having holes or notches for overlapping the notches on the set pin.   The sheet-like vehicle auxiliary material according to claim 1, wherein the cut is V-shaped.   The sheet-like vehicle auxiliary material according to claim 1, wherein the cut has a slit shape.   The sheet-like vehicle auxiliary material according to any one of claims 1 to 3, wherein the cut has a bent portion and / or a curved portion. The cuts first, circular, triangle, polygonal, claims 1 to 4 sheet vehicular secondary materials any one, wherein that the cut out on either the star.   A seat cushion, a seat back, and an armrest cushion body, and a seat-like vehicle auxiliary material according to any one of claims 1 to 5 integrally foam-molded on a back surface side of the cushion body. Vehicle member.   The sheet-like vehicle auxiliary material according to any one of claims 1 to 5 is locked to a set pin, set inside the upper mold, and after the urethane foaming stock solution is supplied into the lower mold, the upper mold is closed. A method for producing a vehicle member, wherein the foaming is integrally foam-molded.

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