JPH0621500U - Leather-wrapped steering wheel - Google Patents

Abstract

(57) [Summary] [Purpose] In a leather-wrapped steering wheel, opening of the leather joint part occurs due to shrinkage (deterioration) of the leather due to the thermal environmental load of the vehicle interior temperature. The present invention provides a leather-wrapped steering wheel capable of maintaining adhesive strength and durability of a leather joint portion against environmental loads such as heat and light. [Structure] A leather-wrapped steering wheel in which a grip portion coating layer 2 for coating the grip portion core metal 1 is made of a urethane material, and the grip portion coating layer 2 is further covered with leather 3.
In this case, a concave groove 2a having a U-shaped or V-shaped cross section is formed on the inner peripheral surface of the grip coating layer 2, an adhesive 4 is applied to the concave groove 2a, and an adhesive reservoir is formed in the concave groove. After the formation, the leather edge portion was adhered to the grip portion coating layer 2 by the adhesive agent reservoir portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a leather winding steering wheel in which a grip core of a steering wheel is covered with a soft material such as urethane resin on the outside of a grip covering layer and leather is further covered.

[0002]

[Prior art]

 Conventionally, in this type of leather-wrapped steering wheel, as shown in FIG. 5, the grip covering layer 2 covers the leather 3, and the leather joint 3a is fixed by hand-sewn or adhesive. This hand-sewn product has a drawback in that it requires a large number of sewing steps and is costly. Recently, more and more adhesives are used to fix the leather joint 3a. In this adhesive-bonding type leather-wrapped steering wheel, as shown in FIG. 5, the adhesive 4 is applied to the grip portion coating layer 2 having a circular cross section, and then the leather 3 is bonded. However, in such a steering wheel, the opening of the leather joint 3a is widened against the shrinkage (deterioration) of the leather 3 with respect to the thermal environmental load of the vehicle interior temperature (especially high temperature to normal temperature to low temperature repeated). There was a problem that it occurred, and it had caused a marked decline in marketability.

[0003]

[Problems to be solved by the device]

 The present invention focuses on the above-mentioned problems, and an object thereof is to provide a leather-wrapped steering wheel that improves the adhesive strength and durability of the leather joint portion against environmental loads such as heat and light.

[0004]

[Means for Solving the Problems]

 In order to solve this problem, according to the present invention, the grip portion coating layer 2 for coating the grip portion core metal 1 of the leather-wrapped steering wheel is made of urethane material, and the grip portion coating layer 2 is further covered with leather 3. In this leather-wrapped steering wheel, a concave groove 2a having a U-shaped or V-shaped cross section is formed on the inner peripheral surface of the grip coating layer 2, and inside the U-shaped or V-shaped concave groove 2a, 2a '. After applying the adhesive 4 to the groove to form an adhesive reservoir in the groove, the leather edge is adhered to the grip portion coating layer 2 by the adhesive reservoir.

[0005]

[Action]

 According to the present invention, the concave grooves 2a, 2a 'having a U-shaped or V-shaped cross section are used as the adhesive reservoir, and the leather edge is bonded at this portion, so that the adhesive strength of the leather joint 3a is further improved. . Further, since U-shaped or V-shaped recessed grooves 2a, 2a 'are provided so as to press and bond at this portion, the amount of swelling of the leather joint 3a is reduced and the steering wheel is gripped. The feel and appearance at that time is further improved.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 4, the leather-wrapped steering wheel SW covers the grip portion coating layer 2 and the spoke portion coating layer 6 with the leather 3. In this leather-wrapped steering wheel SW, the grip portion coating layer 2 that covers the grip portion core metal 1 and the spoke portion coating layer 6 that covers the spoke core metal portion 5 are both made of urethane resin or the like. It is made of soft wood. As the leather 3, either natural leather or synthetic leather is used. As shown in FIG. 2, the grip portion coating layer 2 and the spoke portion coating layer 6 are provided with a groove 2a having a substantially U-shaped cross section. That is, in the grip portion coating layer 2, a concave groove 2a is formed on the inner periphery of the boss portion B (FIG. 4) side along the circumferential direction of the steering wheel SW.

On the other hand, in the spoke portion coating layer 6, the concave grooves 2a of the grip portion coating layer 2 are continuously extended on both sides of the spoke portion and are formed in the radial direction of the steering wheel SW. The concave groove 2a having a substantially U-shaped cross section may be formed only in the grip portion coating layer 2. Alternatively, the cross-sectional shape of each concave groove 2a may be formed to have a substantially V-shaped cross-section as shown by reference numeral 2a 'in FIG. 3, and the point is that an adhesive reservoir can be formed in the concave groove. Good. Then, the adhesive 4 is applied to the groove 2a or 2a 'of the grip portion coating layer 2 and the spoke portion coating layer 6, and the leather is formed on the adhesive reservoir formed in the groove 2a or 2a'. The joint portion 3a is positioned, and the leather 3 is pressed against the grip portion coating layer 2 and the spoke coating layer 6 to be adhesively cured.

[0008]

【effect】

 According to the leather-wrapped steering wheel SW of this embodiment, the leather edge is adhered by the adhesive reservoir portion of the concave groove 2a or 2a 'of the grip portion coating layer 2 and the spoke portion coating layer 6. The leather joint 3a is securely and firmly bonded. Further, since the leather joint 3a is pressure-bonded by the adhesive reservoir in the concave groove 2a or 2a ', there is no protrusion of the leather joint 3a, and the feeling when gripping the leather-wrapped steering wheel SW is also good. Is.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of a grip portion of a leather-wrapped steering wheel according to an embodiment.

FIG. 2 is a perspective view of the vicinity of the grip portion and the spoke portion of the leather-wrapped steering wheel with leather removed.

FIG. 3 is a sectional view of a main part of a grip portion of a leather-wrapped steering wheel according to another embodiment of the present invention.

FIG. 4 is a front view of the leather-wrapped steering wheel of the present invention.

FIG. 5 is a sectional view of a grip portion of a conventional leather-wrapped steering wheel.

[Explanation of symbols]

SW Leather-wrapped steering wheel B Boss part S Spoke part 1 Grip part core metal 2 Grip part coating layer 2a U-shaped concave groove 2a 'V-shaped concave groove 3 Leather 3a Leather joint 3b Leather Stitch stitching part 4 Adhesive 5 Spoke core metal part 6 Spoke part coating layer

Claims (1)

[Scope of utility model registration request] 1. A grip portion coating layer (2) for covering the grip portion core metal is made of a urethane material, and the grip portion coating layer.
In a leather-wrapped steering wheel (SW) in which (2) is further covered with leather (3), a groove is formed in the inner peripheral surface of the grip portion covering layer (2) along the circumferential direction of the steering wheel. (2a or 2a ') is formed, the adhesive (4) is stored in the groove (2a or 2a'), and then the grip portion covering layer (2) is applied to the leather.
(3) A leather-wrapped steering wheel characterized in that the leather (3) is pressure-bonded to the adhesive of the groove (2a) even at the edge of the leather (3).