JP7242013B2 - Interior parts with skin material - Google Patents

Description

TECHNICAL FIELD The present invention relates to an interior part with a skin material for automobiles, in which the surface of a core material is covered with a skin material.

2. Description of the Related Art Interior parts with a skin material, which is obtained by covering the surface of a substantially quadrilateral core material with a skin material, are used for the lids of automotive console boxes and the like. This core material is made of resin, and has an outer wall around the top plate extending to the back side of the core material. The skin material generally has a urethane layer formed on the back side of the skin to provide cushioning properties. The skin material is sewn into a bag and covered from the top plate side of the core material.

As a means for fixing the peripheral portion of the skin material to the back surface of the outer wall of the core material, a metal tucker is often used, as shown in Patent Document 1. However, there is a problem that considerable skill is required to uniformly fix the skin material using a tucker so that wrinkles do not occur at the corners of the core material. In particular, at a portion where the radius of curvature of the corner portion is small, it was not possible to fix it well with a tucker, even if it was devised such as making fine cuts in the skin material.

In addition, an adhesive is also used as means for fixing the peripheral portion of the skin material to the back surface of the outer wall of the core material. However, it takes time to dry the adhesive, and there is a possibility that the adhesive strength will decrease when the vehicle interior becomes hot, so there were concerns about durability.

Therefore, the present inventors sewed a resin band of a certain width around the periphery of the skin material and elastically folded the resin band inside the outer wall of the core material, thereby making the skin material without using a tucker or adhesive. developed a technique for winding and fixing the peripheral edge portion of the core material to the back surface of the outer wall of the core material, and has already proposed it as Patent Document 2.

With this technique, the top surface (main) and side surfaces (gusset) of the skin material are sewn into three-dimensional pieces that are separated using different paper patterns. The resin band can be sewn to the outer peripheral end of the upholstery without any problem. However, if the skin material is a single piece of fabric that is not sewn with the main and gussets, it is not possible to bend the resin band around the outer periphery of the corner pattern paper and sew it. Further, even if the resin band is sewn to the outer peripheral end of the skin material using an arc-shaped paper pattern parallel to the radius of the corner portion of the core material, there is a problem that the skin material is wrinkled due to the winding of the corner portion. .

JP 2016-087333 A JP 2018-144785 A

SUMMARY OF THE INVENTION Accordingly, the object of the present invention is to solve the above-mentioned conventional problems, and even if the surface material has a single mold shape in which the top surface and the side surfaces are not sewn, the surface material is fixed without causing wrinkles. It is to provide interior parts with Another object of the present invention is to provide a technique that enables even unskilled workers to attach the skin material to the core material without wrinkling.

The present invention, which has been made to solve the above-mentioned problems, is an interior decoration comprising a concave core material having an outer wall around it, a skin material covering the surface of the core material, and an inner lid attached to the back surface of the core material. A part, in which a resin core material is sewn on the edge of the skin material, and an insertion groove for inserting the core material is formed at a position adjacent to the outer wall of the core material, and the skin material The edge is folded back and the core material is inserted into this insertion groove. The skin material at the corners of the core material is formed with a projecting piece protruding from a part of the skin material. It is characterized in that it is fixed to the back surface of the material, and the entire edge of the skin material is fixed to the end of the inner lid.

As in claim 2, the core material can be a resin band having a predetermined width. Further, as in claim 3, it is preferable to adopt a structure in which the projecting piece of the skin material is twisted by half a turn or more and fixed to the back surface of the core material.

In the interior part with skin material of the present invention, the end edge of the skin material is folded back along the outer wall of the core material, the resin core material is inserted into the insertion groove and fixed, and the corner part of the core material is the skin material. It is a structure in which the projecting piece formed on the edge is pulled inward and fixed to the back surface of the core material, and the entire edge of the skin material is fixed by the edge of the inner lid. Therefore, even when the radius of curvature of the corner portion is small, the skin material can be fixed without causing wrinkles.

Further, even an unskilled worker can reliably attach the skin material by pulling inward the projecting piece on the edge of the skin material. Depending on the degree of curvature of the corners and the thickness of the skin material, it may be possible to reduce wrinkles in the skin material by twisting the protruding piece more than half a turn and fixing it to the back surface of the core material. .

It is a perspective view which shows the interior component with a skin material of embodiment. It is a bottom view of the resin-made core material before covering with a skin material. FIG. 4 is a perspective view of the back surface of the core material in the process of being covered with the skin material; It is sectional drawing which shows the fixing procedure of the skin material edge part in a straight part. FIG. 10 is a perspective view showing a procedure for processing a protruding piece of the skin material at the corner. FIG. 5 is a cross-sectional view showing a fixed state of the projecting piece at the corner portion; It is a top view which shows the state just before attaching an inner cover.

Embodiments of the present invention will be described below with reference to the drawings.
The interior component with skin material of this embodiment is a console lid, and as shown in FIG. A relatively hard resin such as ABS or PP is used as the material of the core material, and a relatively soft resin, leather, or the like is used as the material of the skin material 10 .

FIG. 2 is a bottom view of the resin core material 11 before being covered with the skin material 10, and FIG. 3 is a perspective view of the back surface of the core material in the middle of being covered with the skin material. As shown in these figures, the core member 11 has a concave shape with an outer wall 13 around the top plate 12 . Since the skin material 10 is fixed to the core material 11 with the core material 11 turned upside down as shown in FIGS.

As shown in FIG. 2, the outer wall 13 of the core material 11 of this embodiment includes an upper straight portion 13A, a lower straight portion 13B, left and right straight portions 13C, an upper corner portion 13D, and a lower straight portion 13D. and a corner portion 13E. Since FIG. 1 shows the shape of the core material 11 covered with the skin material 10, the corresponding parts are indicated with parentheses. As shown in FIG. 1, the top surface and the side surfaces of the skin material 10 are covered with a single piece of cloth, and the top surface and the side surfaces are not sewn, and a single piece of cloth is attached to the core material 11. As shown in FIG. 2, the upper corner portion 13D has a large radius of curvature, while the lower corner portion 13E has a small radius of curvature.

As shown in FIG. 3, a core material 14 made of resin is continuously sewn to the edges of the skin material 10 . As the core material 14, in this embodiment, a resin band having a constant width of 5 to 10 mm and a thickness of about 0.5 to 2.0 mm is used. However, the core material 14 is not necessarily limited to a resin band as long as it can be sewn to the edge of the skin material 10 and has a certain degree of rigidity and flexibility.

As shown in FIGS. 2 and 4, a rib 15 is protrudingly formed at a position adjacent to the outer wall 13 of the core material 11, and an insertion groove 16 for inserting the core material 14 is formed between the core material 11 and the outer wall 13. ing. Specifically, in the left and right straight portions 13C, the insertion grooves 16 are formed substantially over the entire length of the outer wall 13, but in the upper straight portion 13A and the lower straight portion 13B, the length of the insertion groove 16 is short, and the length of the insertion groove 16 is short. There are portions where the insertion groove 16 is not formed in the corner portion 13D and the corner portion 13E on the lower side.

At these straight portions, as shown in FIG. 4A, the edge of the skin material 10 is elastically folded back along the outer wall 13 of the core material 11 together with the core material 14, and the resin core material 14 is inserted into the groove. Insert into 16. Similarly, the core member 14 made of resin can be inserted into the insertion groove 16 at the upper corner portion 13D having a large radius of curvature. Since the inserted core material 14 tends to expand outward due to the repulsive force, it adheres to the inner surface of the outer wall 13 and is temporarily fixed.

However, in the lower corner portion 13E, the outer wall 13 is bent almost at a right angle and the radius of curvature is small. If the edge portion of 10 is rectangular, the core material 14 cannot be sewn on like the upper corner portion 13D. Even if the core material 14 is sewn so that the edges of the corners are curved parallel to the outer peripheral shape of the corner of the core material 11, wrinkles occur when folded. Therefore, as shown in FIGS. 3 and 5, in the specification of sticking a single piece of fabric, at the corner portion with a small radius of curvature, a projecting piece 17 is formed on the skin material 10, and the core is pulled while the projecting piece 17 is pulled. A structure in which it is fixed to the back surface of the material 11 is adopted.

Specifically, as shown in FIG. 5(A), projections 17 are integrally formed on the skin material 10 at the corners, and longitudinal cuts 18 are formed from both sides of the projections 17, and left and right ends of the skin material 10 are cut from both sides thereof. A transverse incision 19 parallel to the edge is made. Then, the left and right ends 20, 21 of the upholstery 10 formed by the cuts 18, 19 are superimposed on these while being pulled as shown in FIG. The core material 14 can be sewn continuously around the outer periphery of the edge. Then, the core material 11 is covered with the skin material 10 and then folded back inside the outer wall 13 at the corner portion of the core material 11 as shown in FIG. 5(C). After that, as shown in FIG. 5(D), the projecting piece 17 of the skin material 10 is pulled inward. By pulling while twisting more than a rotation, even tension is applied to the corners of the skin material 10, and the occurrence of wrinkles in the skin material 10 can be effectively suppressed.

A tip 22 of the projecting piece 17 is fixed to the back surface of the core material 11 . This state is shown in FIG. The fixing means may be Tucker if the material of the core material 11 is ABS resin, but ultrasonic welding is preferable in the case of PP resin. Adhesive is not very preferable because the projecting piece 17 is fixed while applying tension. This state is shown in FIG.

After that, the inner lid 23 is attached to the back surface of the core material 11 , and the top surface of the outer wall 13 is fixed by the end portion of the inner lid 23 . The straight portion is as shown in FIG. 4(B), and the corner portion is as shown in FIG. 6(B). In FIG. 6(B), the fixing projection 24 for restraining the projecting piece 17 is provided on the back surface of the inner lid 23, but this may be omitted. If the entire edge of the skin material 10 is pressed by the end of the inner lid 23 in this way, the core material 14 will not slip out of the insertion groove for the straight part, and the edge of the skin material 10 will extend over the entire circumference. It is securely fixed to the outer wall 13 of the core material 11 .

As described above, according to the present invention, the skin material 10 is a one-piece fabric that does not sew the top surface and the side surfaces, and when the curvature radius of the corner portion of the outer wall 13 of the core material 11 is small, Also, it is possible to provide an interior part with a skin material in which the skin material 10 is fixed without causing wrinkles. Moreover, according to the present invention, even an unskilled person can attach the skin material 10 to the core material 11 without causing wrinkles.

10 Skin material 11 Core material 12 Top plate 13 Outer wall 14 Core material 15 Rib 16 Insertion groove 17 Projection piece 18 Vertical cut 19 Horizontal cut 20 End 21 End 22 Tip of projection 23 Inner lid 24 Fixing projection

Claims (3)

An interior part consisting of a concave core material having an outer wall around it, a sheet of skin material covering the surface of the core material, and an inner lid attached to the back surface of the core material,
A core material made of resin is sewn on the edge of the skin material, and an insertion groove for inserting the core material is formed at a position adjacent to the outer wall of the core material, and the edge of the skin material is folded back. and insert the core material into this insertion groove,
The skin material at the corners of the core material has projections formed by protruding part of the skin material , and the projections are pulled and fixed to the back surface of the core material,
An interior part with a skin material, characterized in that the entire edge of the skin material is fixed by the end part of the inner lid. 2. The interior part with skin material according to claim 1, wherein the core material is a resin band having a predetermined width. 3. The interior part with skin material according to claim 1, wherein the projecting piece of the skin material is twisted more than half a turn and fixed to the back surface of the core material.

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