JP2005297966A - Leather-wound steering wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leather-wound steering wheel preventing round sag at an end of leather and enabling good appearance of the end of the leather, even when a hard part and a soft synthetic resin part softer than the hard part are arranged around a core metal of a ring part along a forming direction of the ring part and the leather is arranged around the soft synthetic resin part. <P>SOLUTION: The hard part 6 and the soft synthetic resin part 13 softer than the hard part 6 are arranged around the core metal 4 of the circular ring part R so as to be along the forming direction of the ring part R, and the leather 15 is arranged around the soft synthetic resin part 13. At the end part of the hard part 6 in the soft synthetic resin part 13 side, an annular groove 9 fitting the terminal 15a of the leather 15 and a columnar supporting part 10 capable of directly supporting the vicinity of the terminal 15a of the annular leather 15 are formed. The leather 15 is arranged by fitting the terminal 15a to the annular groove 9 while making the vicinity of the terminal 51a directly abut on an outer peripheral face of the supporting part 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a steering wheel for steering a vehicle, and in particular, a hard portion and a soft synthetic resin portion are arranged around a cored bar of an annular ring portion that is gripped during steering so as to follow the direction in which the ring portion is formed. The present invention also relates to a leather-wrapped steering wheel configured by arranging leather around a soft synthetic resin portion.

  Conventionally, in a leather-wrapped steering wheel, a soft synthetic resin portion made of urethane foam or the like is provided around a core metal of a ring portion, and leather is sutured around the periphery.

  Therefore, according to the design requirement, a hard synthetic resin portion that is softer than the hard portion and a soft synthetic resin portion that is softer than the hard portion is arranged around the core metal of the ring portion so as to follow the forming direction of the ring portion. When leather is placed around the part, the end on the hard part side of the leather becomes a concave shape due to the elasticity of the soft synthetic resin part. Is rounded with a large radius), and the appearance design of the leather terminal has been reduced.

  The present invention solves the above-mentioned problem, and a hard part and a soft synthetic resin part softer than the hard part are arranged around the core metal of the ring part so as to follow the forming direction of the ring part. In addition, even if leather is arranged around the soft synthetic resin portion, an object of the present invention is to provide a leather-wrapped steering wheel capable of improving the appearance of a leather terminal without causing an arthrare in the leather terminal. .

In the steering wheel according to the present invention, a hard portion and a soft synthetic resin portion that is softer than the hard portion are arranged around the core metal of an annular ring portion that is gripped at the time of steering so as to follow the forming direction of the ring portion. And
A leather-wrapped steering wheel configured by arranging leather around the soft synthetic resin part,
An annular groove for fitting the end of the leather to the end of the hard portion on the side of the soft synthetic resin portion, and an arrangement of the annular groove on the side of the soft synthetic resin portion to directly support the vicinity of the end of the leather A cylindrical support capable of being formed,
The leather is arranged by fitting the terminal into the annular groove while bringing the vicinity of the terminal into direct contact with the outer peripheral surface of the support portion.

  In addition, it is desirable that a protrusion be provided in a portion where the soft synthetic resin portion is disposed in the metal core and in the vicinity of the hard portion.

  Furthermore, it is desirable to provide an annular recess on the outer periphery of the terminal on the soft synthetic resin portion side of the support portion in the hard portion.

  In the leather-wrapped steering wheel according to the present invention, the leather is arranged by fitting the terminal into an annular groove provided in the hard part while bringing the vicinity of the terminal into direct contact with the outer peripheral surface of the support part in the hard part. Since the leather terminal can be arranged to bend at the corners of the support part provided in the hard part instead of the soft synthetic resin part, the leather terminal does not generate an sag and the appearance of the leather terminal is improved Can do.

  In addition, the support part of the hard part that directly supports the leather terminal can play the role of deburring when molding the soft synthetic resin part, preventing the molding material of the soft synthetic resin part from entering the annular groove can do.

  Therefore, in the leather-wrapped steering wheel of the present invention, the hard portion and the soft synthetic resin portion softer than the hard portion are arranged around the core metal of the ring portion so as to follow the direction in which the ring portion is formed. Even if leather is arranged around the synthetic resin part, the leather terminal does not generate an sag, the appearance of the leather terminal can be improved, and the soft synthetic resin part can be formed by the support part of the hard part. Deburring at the time of molding becomes good, and post-processing after molding of the soft synthetic resin portion can be facilitated.

  When the soft synthetic resin portion is disposed on the core of the ring portion and a protrusion is provided in the vicinity of the hard portion, the hard portion side of the soft synthetic resin portion is separated from the hard portion. Even if it is going to peel off around the metal core, the protrusion becomes a resistance, and the peeling can be prevented.

  Furthermore, when the annular recessed part is provided in the terminal outer periphery by the side of the soft synthetic resin part of the support part in a hard part, a soft synthetic resin part will enter in the annular recessed part. Therefore, from the state where only the soft synthetic resin part is interposed around the core metal, the terminal side of the hard part side of the leather immediately approaches the annular groove of the hard part instead of being supported by the support part of the hard part. Therefore, after passing through the state of being supported by the soft synthetic resin portion in the annular recess having a reduced thickness, it becomes a mode of being supported by the support portion, so that the uncomfortable feeling of leather feel can be reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the steering wheel W of the embodiment includes an annular ring portion R that is gripped at the time of steering, a boss portion B that is disposed at the center of the ring portion R, and a ring portion R and a boss portion B. The four spoke portions S to be connected are provided, and a steering wheel core 1 for connecting each other is disposed in each portion. The core metal 1 is composed of a boss core metal 2 arranged in the boss part B, a spoke metal core 3 arranged in each spoke part S, and a ring core metal 4 arranged in the ring part R. The peripheral part of the boss hole 2a at the center of the boss core 2 connected to the steering shaft of the vehicle (not shown) is made of steel, the ring core 4 is made of steel pipe, and the other parts are die cast. It is made of light alloy such as aluminum alloy.

  As shown in FIGS. 1 to 3, the ring portion R includes a hard portion 6 and a soft synthetic resin portion that is softer than the hard portion 6 around the core metal 4 along the direction in which the ring portion R is formed. 13 and the leather 15 is sewn and arranged around the soft synthetic resin portion 13.

  In the case of the embodiment, a total of two hard portions 6 are arranged at the front and rear portions of the steering wheel W, and each of the hard portions 6 is made of a hard synthetic resin such as a foamed epoxy resin and covers the periphery of the ring core metal 4. , And a skin material 8 representing a wood grain design covering the periphery of the main body 7 on the surface.

  The soft synthetic resin part 13 is arrange | positioned at the site | part on either side of the steering wheel W, and is each formed from foaming urethane etc.

  Then, at the end of the main body 7 of the two hard portions 6 and 6 on the side of the soft synthetic resin portion 13, an annular groove 9 into which the end 15 a of the leather 15 is fitted, and a soft synthetic resin portion 13 of the annular groove 9, respectively. A columnar support portion 10 that is disposed on the side and can directly support the vicinity of the terminal 15a of the leather 15 is formed.

  The leather 15 is arranged with the terminal 15a fitted into the annular groove 9 while the vicinity of the terminal 15a is brought into direct contact with the outer peripheral surface of the support portion 10, respectively. The leathers 15 and 15 are sewn on the inner side of the ring portion R on the boss portion B side.

  In addition, a protrusion 5 is provided at a portion where the soft synthetic resin portion 13 is disposed in the ring core metal 4 and in the vicinity of the hard portion 6. In the case of the embodiment, the protrusion 5 is constituted by a portion casted so that the spoke core metal 3 cast by die casting connects the ring core metal 4 made of a steel pipe.

  Further, the outer periphery of the end of the support portion 10 on the soft synthetic resin portion 13 side of the main body 7 of the two hard portions 6 and 6 is annular so that the thickness of the portion is about half of the thickness of the support portion 10. A recess 11 is provided.

  When manufacturing the steering wheel W of the embodiment is described, the steering wheel core 1 is manufactured in advance. The steering wheel mandrel 1 is produced by setting a steel part around the boss hole 2a and a ring core mandrel 4 made of a steel pipe in a predetermined die casting mold and die casting.

  Then, the steering wheel core 1 and the outer skin material 8 are set in the molding die of the hard portion main bodies 7 and 7, and after the mold is clamped, the molding material of the main body 7 is injected into the annular groove 9, the support portion 10 and the annular shape. The main body 7 provided with the recess 11 is formed. The state after the body 7 is molded is the state shown by the solid line in FIG.

  Next, the steering wheel metal core 1 provided with the hard portions 6 and 6 is set in the mold of the soft synthetic resin portion 13, separated from the mold of the main body 7, and after the mold is clamped, A molding material is injected to mold the soft synthetic resin portion 13. In addition, the mold surface of the molding die of the soft synthetic resin portion 13 is brought into a state in which the outer peripheral surface of the support portion 10 of the main body 7 is press-contacted at the time of clamping.

  Thereafter, the soft synthetic resin portion 13 is released from the mold, and the leather 15 is placed around the soft synthetic resin portions 13 and 13 by sewing. At that time, the terminal 15 a is fitted into the annular groove 9 provided in the hard part body 7 while being arranged in direct contact with the outer peripheral surface of the support part 10 in the hard part body 7 near the terminal 15 a of the leather 15. The leather 15 may be adhered to the outer peripheral surface of the support portion 10 by applying an adhesive as desired.

  Further, if a lower cover or a pad P (not shown) is attached to the lower part or the upper part of the boss part B, the manufacture of the steering wheel W is completed, and it can be used by being mounted on the vehicle. Since the steering wheel W is nut-fastened to the steering shaft when mounted on the vehicle, the pad P is mounted on the vehicle with the pad P removed, and the pad P is assembled after mounting.

  In the steering wheel W of such an embodiment, since the terminal 15a of the leather 15 can be arranged so as to be bent not at the soft synthetic resin part 13 but at the corners of the support part 10 provided on the hard part main body 7, the leather terminal It is possible to improve the external appearance of the leather terminal 15a without causing an arthrare in 15a.

  Further, the support portion 10 of the hard portion 6 that directly supports the leather terminal 15a can serve as a burr cutting when the soft synthetic resin portion 13 is molded, and the molding material of the soft synthetic resin portion 13 is an annular groove. 9 can be prevented.

  As described above, in the leather-wrapped steering wheel W of the embodiment, the hard portion 6 and the soft synthetic resin portion softer than the hard portion 6 are provided around the ring portion core metal 4 so as to follow the forming direction of the ring portion R. 13 and the leather 15 is arranged around the soft synthetic resin portion 13, the end 15a of the leather 15 does not generate an sag, and the appearance of the leather terminal 15a can be improved. The support part 10 of the hard part 6 provides good burr cutting when the soft synthetic resin part 13 is molded, and can facilitate post-processing of the soft synthetic resin part 13 after molding.

  Furthermore, in the leather-wrapped steering wheel W of the embodiment, the protrusion 5 is provided at the location where the soft synthetic resin portion 13 is arranged in the ring core metal 4 and in the vicinity of the hard portion 6, and the soft synthetic resin portion Even if the 13 hard part 6 side tries to peel off around the cored bar 4 so as to be separated from the hard part 6, the protrusion 5 becomes a resistance, and the peeling can be prevented. In addition, in embodiment, although the processus | protrusion 5 was comprised in the die-casting site | part of the site | part which connects the ring part metal core 4 to the spoke part metal core 3, the arrangement site | parts of the soft synthetic resin part 13 and the leather 15 are changed, When the protrusion 5 is provided at a position away from the spoke core metal 3, the ring 5 may be provided with the protrusion 5 separately using die casting, welding, or the like.

  Furthermore, in the steering wheel W of the embodiment, the annular recess 11 is provided on the outer periphery of the terminal on the soft synthetic resin portion 13 side of the support portion 10 in the hard portion main body 7, and the soft synthetic resin portion 13 is provided in the annular recess 11. Is arranged. Therefore, from the state in which only the soft synthetic resin portion 13 is interposed around the ring core metal 4 toward the terminal 15a side of the leather 15, the thickness is not immediately supported by the support portion 10 in the hard portion 6. Since it becomes the aspect supported by the support part 10 after passing the state supported by the soft synthetic resin part 13 in the cyclic | annular recessed part 11 which became thin, the discomfort of the feel of the leather 15 can be reduced.

  In the embodiment, the case where the hard part 6 is constituted by the main body 7 and the outer skin material 8 covering the main body 7 is shown. However, the hard part is formed only by the main body 7 in which the outer skin material 8 is not disposed. 6 may be configured.

It is a top view of the steering wheel which shows one Embodiment in this invention. It is sectional drawing of the II-II site | part of FIG. It is a top view which shows the state before shaping | molding of the soft synthetic resin part of the embodiment.

Explanation of symbols

4 ... Ring cored bar,
5 ... protrusions,
6 ... Hard part,
9 ... annular groove,
10 ... support part,
11 ... annular recess,
13 ... soft synthetic resin part,
15 ... leather,
15a ... terminal,
W ... Steering wheel,
R: Ring part.

Claims (3)

Around the core metal of the annular ring part gripped at the time of steering, a hard part and a soft synthetic resin part softer than the hard part are arranged so as to follow the forming direction of the ring part,
A leather-wrapped steering wheel configured by arranging leather around the soft synthetic resin part,
An annular groove for fitting the end of the leather to the end of the hard portion on the side of the soft synthetic resin portion, and an arrangement of the annular groove on the side of the soft synthetic resin portion to directly support the vicinity of the end of the leather A cylindrical support capable of being formed,
The leather-wrapped steering wheel, wherein the leather is disposed with the terminal fitted into the annular groove while the vicinity of the terminal is in direct contact with the outer peripheral surface of the support portion.   The leather-wrapped steering wheel according to claim 1, wherein a protrusion is formed at a location where the soft synthetic resin portion is disposed in the core metal and at a location near the hard portion.   The leather-wrapped steering wheel according to claim 1 or 2, wherein an annular recess is formed on a terminal outer periphery of the support portion on the soft synthetic resin portion side of the support portion.

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