JPH0716542Y2 - Skin-wrapped steering wheel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a skin-wrapped steering wheel mounted on an automobile.

<Prior art> Conventionally, the outer surface of the synthetic resin coating layer of the ring portion and the spoke portion of the steering wheel is fitted with an outer skin such as a natural leather or a synthetic leather in order to further improve the feel and the appearance. There was a skin-wrapped steering wheel (see Japanese Utility Model Laid-Open No. 60-144568).

Further, in the case of the skin-wrapped steering wheel skin of this kind, a plurality of substantially rectangular strips are prepared in consideration of material taking, and one annular skin is formed by abutting and stitching both longitudinal ends thereof. There was one (see JP-A-61-37578).

<Problems to be solved by the invention> By the way, in the case of the above-mentioned outer skin composed of a plurality of strips, first, the longitudinal ends of the respective strips are sewn with a thread to form the outer skin in an annular shape, and the outer skin is formed into a steering wheel. The outer skin is attached to the steering wheel by being wound around the outer periphery of the covering layer and further stitching the ends in the width direction with a thread. Therefore, the peripheral portion of each strip needs to have sufficient strength for suturing the thread. Therefore, it is conceivable to fold the periphery of each strip to the back side by the width required for stitching to reinforce it in a double structure, but the periphery of the rectangular strip has a constant width in both the longitudinal and width directions. When it is folded back, the corner has a quadruple structure, and when this skin is attached to the outer periphery of the covering layer of the steering wheel, only the quadruple structure part bulges outward, so the feel of that part is felt. There is a problem that not only the deterioration of the appearance but also the appearance of the appearance is deteriorated.

<Means for Solving the Problems> The present invention has been made in view of the above problems.
Even if the outer skin made of a strip having a folded portion at the peripheral edge is attached to the outer periphery of the coating layer, a part that bulges outward does not occur, and there is no deterioration in the feel or appearance. The purpose is to obtain a skin-wrapped steering wheel.

That is, this invention is a synthetic resin such as urethane, PVC, polypropylene or the like, or a wooden coating layer is formed on the outer periphery of a core material made of a core metal or FRP material, and natural leather or synthetic leather is formed on the outer periphery of the coating layer. , A synthetic resin sheet, in a skin-wrapped steering wheel in which an annular skin formed from strips of fabric or the like is mounted, the strip has a peripheral portion of a horizontally long base material whose corners are notched obliquely. The folded back portion is formed by folding back on a back side of a predetermined width so that the folded portions do not overlap and have no gap, and the skin is sewn so that the strips do not overlap each other at the folded portions in the longitudinal direction and the width direction. Solves the above-mentioned problems.

<Operation and Effect of the Invention> In the skin-wrapped steering wheel of the present invention, the skin mounted on the outer periphery of the coating layer is formed in an annular shape by stitching the strip having the folded-back portion on the peripheral portion.

Then, the strip is formed into a substantially rectangular shape by folding back the peripheral portion to a back side of a predetermined width from a horizontally long base material whose corners are cut out in an oblique direction so that the folded-back portions at the corners do not overlap and have no gap. There is. The folded portion formed on the peripheral portion of the strip is used as the stitched portion. Therefore, the strength necessary for suturing can be given to the entire area of the corner of the strip as the suturing portion. Further, since there is no quadruple structure at the corners of the strip, even if the outer skin made of this strip is attached to the outer periphery of the coating layer, there is no part that bulges outward, and It does not deteriorate the feel or the appearance.

<Embodiment> An embodiment of the present invention will be described below with reference to FIGS.

The steering wheel W of this embodiment includes a steering wheel body 1 including a boss portion 2, a spoke portion 3, and a ring portion 4 as in the conventional case, and a pad 10 arranged on the boss portion 2 of the steering wheel body 1. It consists of The steering wheel body 1 includes a metal boss 2a fixed to a steering shaft (not shown), a boss plate 2b welded and fixed to the boss 2a, and three spoke cores welded and fixed to the boss plate 2b. Gold 3a, a ring core 4a that is welded and fixed to the end of the spoke core 3a, and a polypropylene resin coating layer that covers the outer circumference of a part of the ring core 4a and the spoke core 3a. It consists of 5. The coating layer 5 is formed by injection molding. Then, a chloroprene rubber cushion material 16 is attached to the outer periphery of the polypropylene resin coating layer 5 in the ring portion 4 with an adhesive, and a synthetic leather outer skin 15 is attached to the outer periphery thereof by stitching a thread 20. Has been done. The cushion material 16 provides a good feel when gripping the skin 15, regardless of the material of the skin 15. A rubber-based adhesive is applied to the outer periphery of the cushion material 16 so as to firmly bond the outer skin 15 and the cushion material 16 together with the suture of the thread 20. Further, the cushion material 16 plays a role of absorbing strain on the adhesive surface due to the tension of the thread 20.

In order to form the above-mentioned synthetic leather skin 15, first, as shown in FIG. 3, from a base material 151 of synthetic leather of a substantially horizontal rectangular shape in which a corner portion 152 is obliquely cut at an angle of 45 °. , 4th
As shown in the figure, the peripheral portion is folded back to the back side with a virtual width 155 connecting the center points of the hypotenuses of the corners 152 with a predetermined width of 5 to 13 mm so that overlapping and gaps do not occur in the folded portion. Form a rectangular strip 150. At least one piece (three pieces in this embodiment) of this strip 150 is prepared, and the looped-out portions 153 at both ends in the longitudinal direction are abutted against each other to form the annular skin 15 by stitching the thread 21.

Then, the skin 15 is wound around the outer periphery of the ring portion 4, and the folded portions at both ends in the width direction of the skin 15 on the inner peripheral surface side (the boss portion 2 side).
The outer skin 15 is attached to the outer circumference of the ring portion 4 by applying tension to the thread 154 with stitches so as not to overlap each other (see FIGS. 1 and 5).

In each of the folded-back portions 153 and 154, the folded-back portion is adhered to the base material 151 with an adhesive. Further, since the outer skin 15 is formed slightly smaller than the outer shape of the ring portion 4 and is stretched and sewn, wrinkles do not occur at the sewn portion.

In the skin-wrapped steering wheel W of this embodiment, since the skin 15 is composed of the three strips 150, the material yield is good and it can be manufactured at low cost. Also, each strip 150
The corner portion 152 of the base material 151 is obliquely cut at an angle of 45 °, and the edge portion is folded back to a back side of a predetermined width with a virtual line 155 connecting the central points of the hypotenuses of the corner portion 152 as the folding center. For,
Longitudinal end folded portion 153 and width end folded portion 154
The folding width can be made the same, and the diagonal ends of the folding portion can be brought into contact with all sides to prevent a gap from occurring. For this reason, since there is no single-layered structure in the entire corner portion, the corner portion can be provided with the strength required for suturing, and the stitching can be performed without worry even if the stitch pitch of the thread 20 changes. . Then, as shown in FIG. 5, the stitched portions of the two folded-back portions 153 and 154 can be made symmetrical vertically and horizontally, and the appearance can be improved. Also this epidermis
Since 15 does not have a quadruple structure, even if it is attached to the outer periphery of the coating layer 5 of the ring portion 4, a part that bulges outward does not occur, and the feel of the skin 15 and the appearance of the appearance are improved. It has an excellent effect that it does not decrease.

The skin-wrapped steering wheel of the present invention is not limited to the above embodiment, but may be modified and embodied as follows, for example.

(1) The skin strip 150 is formed of a material such as natural leather, synthetic resin sheet, or fabric in addition to synthetic leather.

(2) The skin is formed by a combination of strips 150 made of different materials.

(3) The notch in the oblique direction of the corner portion 152 of the base material 151 of the strip 150 is formed by linearly notching at an angle of 15 to 75, or as shown in FIG. As shown in (b), a corner 252 is formed by obliquely notching a curve such as a sine curve. Then, forming the strip 250 from those base materials 251. In addition, as shown in FIG. 1, in the case where the folded-back portion is located above the spoke portion 3 and the folded-back portion is not a stitched portion, the folded width may be narrowed.

(4) Each strip 25 as shown in FIGS. 7 and 8, respectively.
Depending on the combination of 0, the part 25a that covers the covering layer of the spoke part
To form a skin 25 that is also joined together.

(5) As shown in FIG. 9, the outer skin 35 is formed by a combination of the substantially T-shaped strips 350 in which the portions 35a covering the covering layers of the spokes are integrated. In addition, this strip 350 has three corners 3
52 is notched obliquely at an angle of 45 °, and for convenience of folding back the peripheral portion, the base portion 351 having a V-shaped notch formed in the corner portion 354 does not overlap the folded portion around the peripheral portion. As described above, the folded portion 353 is formed by folding back on the back side of the predetermined width.

[Brief description of drawings]

FIG. 1 is a plan view of a skin-wrapped steering wheel according to an embodiment of the present invention, FIG. 2 is a central sectional view of FIG. 1, and FIG. 3 is a strip showing a state before a peripheral edge is folded back. Plan view,
FIG. 4 is a plan view of a strip having a folded portion, FIG. 5 is a partial perspective view of a skin attached to a ring portion, and FIG. 6 is a partial plan view showing a corner of a strip of another embodiment. Figure, Figure 7, Figure 8
FIG. 9 and FIG. 9 are partial plan views showing a developed state of the epidermis of another embodiment. 1 ... Steering wheel body, 4 ... Ring part, 5
…… Coating layer, 10 …… Pad, 15 ・ 25 ・ 35 …… Skin, 20 ・
21 …… Thread, 150 ・ 250 ・ 350 …… Strip, W …… Steering wheel.

Claims (1)

[Scope of utility model registration request] 1. A skin-wrapped steering wheel in which a coating layer is formed on the outer periphery of a core material, and an annular skin formed of strips is mounted on the outer periphery of the coating layer, wherein the strip has corners. The peripheral edge portion of the oblong base material that is cut out in the oblique direction is formed by being folded back to a back side of a predetermined width so that the folded portions do not overlap and have a gap, and the skin is formed by the strip in the longitudinal direction and A skin-wrapped steering wheel characterized by being sewn together so that they do not overlap each other at the folded portions in the width direction.