JP2002096740A - Steering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly heat a grip portion of a steering device and prevent the cut of a heater wire during manufacture. SOLUTION: A ring rim portion 5 of a steering wheel body 2 is covered with the heater device 21 and heat transfer means 23 and further covered with a leather skin 22. The skin 22, after wound on the rim portion 5, is sewed thereto with a sewing yarn 58 passed through a hole portion 50 formed along the edges at both sides. The heater device 21 having a heater wire 28 in a net woven form is arranged on the skin 22 except on its stitched portion. The heat transfer means 23 is formed from an aluminum plate and arranged on the face of the stitched portion of the skin 22, with both sides lapped on the heater device 21. The heat of the heater device 21 is quickly transferred to the whole periphery of the rim portion 5 by the heat transfer means 23 to cause the rim portion 5 to be uniformly heated. The skin 22 can be sewed with the sewing yarn 58 without giving damage to the heater wire 28 due to a sewing needle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering device provided with a heater device on a grip portion.

[0002]

2. Description of the Related Art When a steering wheel for controlling a vehicle is used in a cold place such as outdoors in winter,
For comfortable steering after starting, it is desired to quickly heat the rim to a temperature suitable for the gripping operation of the driver.

[0003] In this regard, a configuration is conceivable in which cooling water for an engine or warm air from an air-conditioning box is guided to a rim portion of a steering wheel and heated. However, in this configuration,
For vehicles cooled in cold places, such as outdoors in winter,
There is a problem that a sufficient warm-up is required and that rapid heating is difficult.

In this regard, there is known a configuration in which a sheet-like heater device is incorporated in a grip portion of a steering by using electric power generated by an engine.

[0005] For example, as described in Japanese Utility Model Publication No. 63-11029, a heat insulating material is provided at a portion where a gripping operation is performed, and a sheet-like heat generating unit is provided on the surface side of the heat insulating material. A configuration in which an outer skin is provided on the surface side of a unit is known. And this heating unit
A heating wire, which is formed by winding a heating wire around a core yarn, is arranged in a zigzag manner on the inner surface of an aluminum soaking foil, and is closely attached. However, in such a configuration in which the heater wire is attached to the seat in a zigzag manner, the work of attaching the appearance well along the rim portion of the steering wheel having a circular cross section is complicated, and it is difficult to improve the workability.
Providing a product having a good finished appearance has a problem that requires a manufacturing cost. Further, in this configuration, a thick heater wire forms a projection on the skin, so that a so-called “heater wire is protruded” easily occurs, and the presence of the heater wire can be visually and tactually sensed. have.

Further, as described in, for example, JP-A-4-15162, a plurality of thin heating wires are knitted to form a net-shaped heating insert, and this heating insert is bonded to a coating material or otherwise. It is known that the coating material is attached to the steering wheel body together with the heating insert by a suitable method. This configuration is preferable in that it is possible to deform while following the curved surface shape of the rim portion while securing the heat generation amount per unit area, so that a so-called "heater wire is not easily raised" state is unlikely to occur. However, in such a configuration, a net-shaped heater in which a heater wire is woven into a flat band shape is attached along the surface of the rim portion having a substantially circular cross section of the annular steering wheel body, and further, the outer periphery of the heater is It is necessary to wrap a covering material such as natural leather around the part and sew the edges on both sides with thread.However, if a mesh-shaped heater approaches the sewn part, the heater wire will be damaged by the sewing needle and the heater will rise. There is a problem that the temperature performance may be reduced. Further, when the heater is not arranged facing the stitched portion, there is a problem that the temperature distribution becomes uneven.

[0007]

In a configuration in which a heater wire is attached to a sheet in a zigzag shape as in the above-mentioned conventional art, the heater wire is likely to be in a floating state, and it is difficult to improve the appearance and the operational feeling. are doing. Further, in a configuration in which a plurality of thin heating wires are knitted into a net shape, when a net-shaped heater approaches the sewn portion of the covering material, the heater wire may be damaged by the sewing needle, and the temperature rising performance of the heater may be reduced. When the heater is not arranged facing the stitching portion, there is a problem that the temperature distribution becomes uneven.

[0008] The present invention has been made in view of the above points, and an object of the present invention is to provide a steering device provided with a heater device capable of securing a temperature rising characteristic.

[0009]

According to a first aspect of the present invention, there is provided a steering apparatus including a steering apparatus main body having a grip portion;
A covering member including a pair of connecting portions connected to each other and covering the grip portion, and a heat generating portion disposed at a part between the grip portion and the covering member except for a position facing the connecting portion. Heater device, disposed between the gripping portion and the covering member, partially overlapped with the heat generating portion and extended to a position facing the connecting portion, and more thermally conductive than the covering member And good heat transfer means.

In this configuration, by operating the heater device, the heat of the heater device is transmitted to the covering member, and the operational feeling in a cold region or a cold region is improved. Since the heater device is arranged except for the position facing the connection portion of the covering member, the heater device is not damaged by the connection work of the connection portion, and the temperature-raising characteristics are ensured. Since the heat of the heater device is directly transmitted to the covering member and indirectly to the covering member via the heat transfer means, it is easy to make the temperature distribution of the covering member uniform.

According to a second aspect of the present invention, in the steering apparatus according to the first aspect, the heat transfer means has both sides overlapped with the heat generating portion via a position facing the connecting portion.

In this configuration, the space between the pair of edges of the heater device can be covered with one heat transfer means, so that the number of parts is reduced and the manufacturing cost is reduced. In addition, since the heat transfer means receives heat supply from both sides, quick heating is possible.

According to a third aspect of the present invention, in the steering apparatus according to the first or second aspect, the covering member is attached to the steering device main body with the covering member wound around the grip portion and the connection portions sewn together.

[0014] In this configuration, a good appearance is realized by the covering member wound and sewn, and the heater device may be damaged by a jig or the like used at the time of sewing the connection portion of the covering member. Therefore, the temperature rise characteristics are secured.

According to a fourth aspect of the present invention, in the steering apparatus according to any one of the first to third aspects, the heat transfer means includes a metal sheet.

In this configuration, the thermal conductivity is good, the temperature distribution can be easily made uniform, and the thickness can be reduced, so that a configuration suitable for the grip portion of the steering device can be easily realized. Is done.

According to a fifth aspect of the present invention, in the steering device according to any one of the first to fourth aspects, the heat generating portion has a net shape.

In this configuration, the grip portion can be heated in a planar manner and the appearance can be improved, but it is easy to use a net-shaped heat generating portion which is easily damaged during the assembling work, and the manufacturing cost can be reduced. At the same time, the operational feeling and appearance are improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the steering device according to the present invention will be described below with reference to the drawings.

1 to 3, reference numeral 1 denotes a steering wheel of an automobile as a steering device. The steering wheel 1 is mounted on a steering wheel main body 2 as a steering device main body and an occupant side of the steering wheel main body 2. And an airbag device (airbag module) as a pad body (not shown). The steering wheel 1 is normally mounted on a steering shaft provided in a vehicle in an inclined state. Hereinafter, the occupant side of the airbag device, that is, the front side will be on the upper side, and the steering shaft side, that is, the rear side will be on the lower side. The front side of the vehicle, ie, the windshield above the front side, will be referred to as the front side, and the rear side, ie, the rear lower side, of the vehicle will be referred to as the rear side or the near side.

The steering wheel body 2 is
A rim portion (ring portion) 5 as an annular grip portion, that is, a grip portion, a boss portion 6 located inside the rim portion 5, and a plurality of books connecting the rim portion 5 and the boss portion 6. In the embodiment, it is composed of four spokes 7. A substantially cylindrical boss 8 fitted to the steering shaft is provided below the boss portion 6 on the vehicle body side, and the boss 8 has a boss plate 9 which forms a core body also called a hub core. Is integrally fixed by die casting a magnesium alloy or the like. From the boss plate 9, the core metal 7a of the spoke portion 7 is integrally extended or fixed by welding or the like. Furthermore, the core metal 7a of the spoke portion 7
The core metal 5a of the rim portion 5 is fixed by welding or the like.
In addition, on the surface side of the entire periphery of the core metal 5a of the rim portion 5 and the surface side of the portion of the core metal 7a of the spoke portion 7 on the rim portion 5 side,
An inner covering portion 10 made of a soft foamed polyurethane or the like is formed.

Hereinafter, the side of the rim portion 5 facing the boss portion 6 along the circumferential direction will be described as an inner peripheral portion A, and the opposite side of the inner peripheral portion A will be described as an outer peripheral portion B.

A lower cover 11 made of resin, also called a back cover or a body cover, is attached to the boss 6 of the steering wheel, and the lower part of the boss 6 is covered. The lower cover 11 has a central opening 11a penetrating vertically, a rear opening 11b opening on the rear side, and substantially circular side openings 11c, 11 opening on both sides.
and c are formed. In the central opening 11a, an electric connection device such as a clock spring (not shown) for inserting the steering shaft and electrically connecting the vehicle body side and the steering wheel 1 side is arranged. The rear opening 11b and the side opening 11c are working openings, the rear opening 11b is covered with a lid 13 that is a detachable lid, and each side opening 11c is a detachable lid. It is covered with a mask 14, which is a body. Further, the lower cover 11 is provided with mounting bosses 11d provided with screw holes at a plurality of positions, in this embodiment, at four positions. Is screwed into the mounting boss 11d, and the lower cover 11 is mounted on the boss plate 9.

On both sides of the boss plate 9, mounting portions 16, 16 are provided integrally with the boss plate 9. Each of the mounting portions 16 is horizontally extended outwardly, and is then slightly upwardly inclined in an upwardly inclined manner. The portion has a bracket hole 18 formed in a long hole shape along the longitudinal direction.

Although the airbag device is not shown,
A horn switch mechanism as a switch device is integrally incorporated, and the device main body is supported via the horn switch mechanism. The device main body includes a base plate made of a metal plate or the like, a bag-shaped airbag, a folded airbag. A cover made of resin, an inflator for injecting gas, a retainer for fixing the inflator and the airbag to the base plate, a metallic tubular belt for fixing the cover to the base plate, and the like. On the other hand, the horn switch mechanism includes a horn plate as a support, a pair of switch mechanisms on both sides, a horn spring as a coil spring as four urging means, a Torx bolt as three connecting means, and a pair of harnesses on both sides. The boss plate 9 is attached to the attachment portions 16, 16. When the airbag device is pushed, the contacts of the horn switch contact each other, and the horn is blown.
On the other hand, in the event of a car collision, on the other hand, gas is rapidly injected from the inflator into the airbag, the folded airbag is rapidly inflated, the cover body is torn, and the airbag is moved to the front of the occupant. The horn plate is plastically deformed to protect the occupant.

Further, a heater device 21 is disposed on the surface side of the inner covering portion 10 of the rim portion 5 of the steering wheel body 2, and a skin 22 as a covering member is disposed on the surface side of the heater device 21. I have. Further, in this embodiment, a heat transfer means 23 is arranged between the inner covering portion 10 and the skin 22.

The heater device 21 is provided with a heater main body 25 which is a long band-like net and has an elongated rectangular shape as a whole, and both edges along the longitudinal direction of the heater main body 25 have side end portions. 26, 26, and the ends of both ends in the longitudinal direction of the heater main body 25 are terminal portions 27a, 27b. The heater main body 25 is formed by weaving a plurality of heater wires 28 in a net shape, that is, in a net shape. Each heater wire 28 has an insulating film provided on the surface of a core wire that generates heat when energized. That is, each heater wire 28, except for the one located at the end in the width direction, goes straight for two squares, then is wrapped around another heater wire 28 and folded back, proceeds in the opposite direction by one square, and After being wrapped around the heater wire 28 and bent at a substantially right angle, a zigzag is drawn so as to go straight again by two squares, and is woven so as to extend from one terminal 27a to the other terminal 27b.

Also, each terminal 27a, 27b of the heater main body 25
A terminal plate 29, which is a thin plate made of copper, is arranged in the, and the core wires of the heater wires 28 are connected in parallel to form a heater having a predetermined capacity. Usually, a heater for a steering wheel is 60 W to 100 W.
A heater having a capacity of? Furthermore, each terminal unit 27a, 2
One lead wire 31 is connected to each of the wires 7b, and a connector 31a is attached to a tip portion of each of the lead wires 31.

On the other hand, a yarn 32 as an elongation suppressing means such as polyester or nylon is passed through each side end 26 along the longitudinal direction, and a heater wire arranged at the end in the width direction is provided.
28 is hung and supported. In addition, each side end 26
, A double-sided pressure-sensitive adhesive tape, which is a fixing means and an adhesive means (not shown), is attached to one surface side, that is, the skin 22 side.

In the present embodiment, each heater wire 28
For example, a copper-nickel alloy wire, which is a core wire having a wire diameter of 0.05 mm to 0.1 mm, is provided with a polyurethane resin coating as an insulating film, and has a resistance value of 60Ω.
Further, each heater wire 28 is woven in a net shape with a rhombus having a side length of 2 mm of one square, and the width of the heater device 21 is about 70 mm in natural length, and between the widths of about 70 mm, Thirty heater wires 28 are arranged in parallel, operated at 12 V, and have a heater capacity of 72 W. The thread 32 is made of polyester.

The outer skin 22 is a sheet made of natural or artificial leather. In the present embodiment, a plurality of belt-like members 41, 42, 43, and 44 made of natural cowhide are connected by a connecting portion 45. The main body 47 is formed in a substantially strip shape as a whole and covers the rim portion 5, and the extension portion 48 extending from the main body portion 47 and covering each spoke portion 7 is configured. The skin 22 is formed with stitch holes 50 constituting a connecting portion over the entire length along the vicinity of the edges 49 on both sides.

Further, the heat transfer means 23 includes a plurality of aluminum plates which are metal plates as heat transfer bodies.
23a, 23b, 23b and 23c are provided. These aluminum plates 23a, 23b, 23b and 23c are arranged along the inner peripheral portion A side of the inner covering portion 10 of the rim portion 5 along the space between the spoke portions 7.
In addition, these aluminum plates 23a, 23b, 23
b, 23c are provided with recesses 10a capable of accommodating the width, length, depth, etc., and these aluminum plates 23a,
With the surfaces 23b, 23b, 23c attached to the respective recesses 10a, the surfaces of the aluminum plates 23a, 23b, 23b, 23c are continuous with the surface of the inner covering portion 10, and the surface of the rim portion 5 forms a substantially single surface. It has become. In the present embodiment, each of the aluminum plates 23a, 23a
b, 23b, and 23c have a width W of 28 mm and a wall thickness of 0.3 mm.
Thus, it is attached to each recess 10a.

The manufacturing process of the steering wheel 1 is as follows. First, a heat transfer means is attached to each concave portion 10a of the inner covering portion 10 of the rim portion 5 of the steering wheel body 2 by using an adhesive means such as a double-sided adhesive tape. 23 aluminum plates
Paste 23a, 23b, 23b, 23c.

A heater device 21 to which a double-sided adhesive tape is adhered is adhered to the inner surface side of the substantially band-shaped outer skin 22, and a width from the inner surface side of the heater device 21 along the connecting portion 45 of the outer skin 22. A double-sided adhesive tape (not shown) is attached in the direction. Each double-sided adhesive tape attached to each surface of the heater main body 25 of the heater device 21 is attached to the heater main body 25, respectively.
The adhesive effect is exerted on both sides of the heater device 21 through the 25 stitches. The heater device 21 is arranged so as to avoid the edges 49 and the holes 50 on both sides of the skin 22.

Next, the skin to which the heater body 25 is attached
As shown in FIG. 2, an annular cylindrical member 55 is formed with the heater device 21 as an inner surface. The cylindrical member 55 has an inner diameter slightly smaller than the outer diameter of the rim portion 5 of the steering wheel body 2.

The operation of winding the skin 22 around the rim portion 5 of the steering wheel body 2 is as follows: the skin 22 is pulled and extended, the cylindrical member 55 is temporarily expanded in diameter, and the skin 22 shown by a dashed line in FIG. The central part in the width direction of the heater device 21
56 is attached along the outer peripheral portion B of the rim portion 5. In this state, the skin 22 is elastically deformed by receiving the tension, and fits near the outer peripheral portion B of the rim portion 5 without wrinkles. In addition, during this mounting operation, the heater body 25 of the heater device 21 attached to the back surface, that is, the inner surface of the skin 22 is also extended, but the heater body 25 has a net shape and the entire surface along the skin 22. Since it is not constrained specifically and is not constrained at least at the outer peripheral portion B, the elongation is not concentrated at a specific location, and the heater wire 28 does not break. That is, the outer skin 22 and the heater device 21 are wound around the rim portion 5 with dimensional changes in the mounting operation due to their respective extending characteristics. In addition, since the heater main body 25 is easier to extend than the skin 22, the extension of the skin 22 does not cause the heater main body 25 to reach the elongation limit. Therefore, the heater wire 28 is not broken during the mounting operation.

The outer skin 22 extended by the outer peripheral portion B of the rim portion 5 is inclined inward so as to wind up the rim portion 5 and further along the surface of the rim portion 5 so that the rim is formed by the double-sided adhesive tape. It temporarily adheres to the surface of the part 5 by adhesion. In this state, the side ends 26 on both sides of the heater device 21 are connected to the heat transfer means.
The 23 aluminum plates 23a, 23b, 23b, 23c are arranged so as to overlap on both sides.

From this state, the edges 49 of the skin 22 are butted against each other at the position C on the inner peripheral portion A of the rim portion 5 and stitched with a sewing thread 58 made of polyester or the like passing through the stitch hole 50. Then, the state shown in FIGS. 1 and 3 is established. FIG.
For explanation, the skin 22, the heater wire 28, and the heat transfer means 23
This shows a state in which the aluminum plates 23a, 23b, 23b, and 23c of FIG. The stitches (seams) E are so-called baseball stitches, in which a thread 58 penetrates the front and back of the skin 22 through the hole 50, and alternately reciprocates between the edge 49 on one side and the edge on the other side. Circumferential direction (direction of arrow F shown in FIG. 1)
Then, the skin 22 adheres to the rim portion 5 without wrinkles.

The range in which the stitch E is applied is the range W1 shown in FIG. 3 in the circumferential direction of the cross section of the rim 5, which is about 8 mm. Further, from the range W1 of the stitch E, a space W2 is set as a marginal space by two.
The heater device 21 is arranged at a position where mm has been secured, and is set so that the sewing needle does not interfere with the heater device 21 in the sewing operation of the skin 22. In addition, an overlapping portion W3 of each of the aluminum plates 23a, 23b, 23b, 23c and the heater device 21 is formed.
Is set to 8 mm.

The lead wire 31 of the heater device 21 is connected to a harness (not shown) on the steering wheel main body 2 side via a connector 31a provided at the distal end.

Therefore, the heater device 21 is connected to the lead wire 31.
When the electric power is supplied through the heater, the heater body 25 generates heat, heats the rim 5 except for the periphery of the stitch E, and raises the surface of the rim 5 via the skin 22. On the other hand, the portion of the stitch E is not directly heated by the heater main body 25, but the both sides of the heater main body 25 have the aluminum plates 23a, 23b, 23b, 23c.
The aluminum plate 23a, 23b, 23b, 23c is heated by contacting the overlapping portion W3, and through these aluminum plates 23a, 23b, 23b, 23c,
The vicinity of the edge 49 of the epidermis 22 is heated. In this way, the entire skin 22, including the portion of the stitch E near the edge 49, is warmed.

Further, although not shown, the steering wheel body 2 is provided with a temperature control means having a temperature sensor and the like, so that the power supply to the heater device 21 is interrupted so that the temperature does not deviate from a predetermined temperature range. Control. Further, the temperature control means includes a voltage control circuit and the like, and can adjust the heat generation amount.

As described above, according to the present embodiment, the configuration provided with the heater device 21 that covers the annular rim portion 5 of the steering wheel 1 used for steering an automobile or the like is described. Heater device 21 only on part of the surface
The other part is covered by a heat transfer means 23 partially overlapped with the heater device 21. Therefore, the heat of the heater device 21 is quickly transmitted to the entire circumference of the rim portion 5 by the heat transfer means 23, and the rim portion 5 is almost uniformly heated over the entire circumference in the cross-sectional direction, whereby the operational feeling can be improved and the heater can be improved. It is not necessary that the coverage of the device 21 extend exactly to the vicinity of the edge 49 of the skin 22.

Then, a pair of edges 49 of the skin 22 covering the rim 5, the heater device 21, and the heat transfer means 23 are arranged in a circumferential direction along the inner peripheral portion A of the rim 5, and are attached to each other. In a configuration in which the heat transfer means 23 is sewn together, the heat transfer means 23 is arranged along the edge 49 of the skin 22,
Is not located along the edge 49 of the epidermis 22,
The stitch E, which is the stitching portion of 49, is configured not to overlap with the heater device 21 but to overlap only with the heat transfer means 23, so that it is possible to prevent the heater wire 28 of the mesh heater device 21 from being damaged by the sewing needle. . In addition, the heater device 21 can sufficiently heat the portion of the stitch E by arranging the heater device 21 over the abutting portion of the edge portion 49.

The heat transfer means 23 has a heater device on both sides.
By arranging it on the side end portions 26 on both sides of the 21, heat can be supplied from both directions and heating can be performed effectively.

Further, the heat transfer means 23 is made of a thin metal sheet having good thermal conductivity such as an aluminum plate 23a, 23b, 23b, 23c, which is a plate made of aluminum. A configuration suitable for heating a certain rim portion 5 can be easily realized.

Further, a reticulated heater device 21 attached to the skin 22
In this heater device 21, the side end portions 26, 26 arranged along the circumferential direction of the rim portion 5 are fixedly mounted on the inner peripheral side of the rim portion 5, so that the heater device 21 is Rim part 5
Is not fixed to the surface of the rim portion 5 at the outer peripheral portion B of the heater wire 28. Even when an external force is applied, the force is not concentrated on a specific narrow area or point of the heater wire 28, and the surface of the rim portion 5 is The heater wire 28 can be prevented from being broken by allowing the movement and dispersing the stress. When the heater device 21 is attached to the rim portion 5, the heater device 21 is integrally fixed to the skin 22 and the rim portion 5 is fixed.
By forming an annular tubular member 55 having an inner diameter corresponding to the outer diameter of the cylindrical member 55 and assembling the tubular member 55 to the rim 5, the winding operation of the skin 22 and the heater device 21 around the rim 5 can be performed. The mounting operation including the mounting operation is facilitated, the complicated operation can be reduced, the manufacturing cost can be reduced, and the disconnection accompanying the mounting operation can be reduced. Thus, the manufacturing cost can be reduced while improving the quality of the steering wheel 1.

In the above-described embodiment, the heat transfer means 23 is disposed on the rim portion 5 and the heater device 21 is disposed on the heat transfer means 23. However, the heat transfer means is disposed on the heater device. Can also be placed one on top of the other.

Further, after forming a member in which the heater device 21 is attached to the skin 22, this member is attached to the steering wheel main body 2. However, the present invention is not limited to this configuration.
After attaching the heater 21 to the steering wheel body 2, the skin 22 can be attached so as to cover the heater device 21. Alternatively, after the belt-shaped skin is wound around the rim portion of the steering wheel body, the opposite ends can be stitched and joined.

The present embodiment is suitable for a configuration in which a net-shaped heater device is arranged on a steering wheel body of an annular automobile, but the steering device body is not necessarily a steering wheel of an annular automobile. The present invention is not limited to the main body, and can be applied to a steering device other than an automobile, and can also be applied to a steering device body other than an annular shape.

[0051]

According to the steering device of the first aspect, by operating the heater device, the heat of the heater device is transmitted to the covering member, and the operational feeling in a cold district or a cold district can be improved. Since the heater device is arranged except for the position facing the connecting portion of the covering member, the heater device is not damaged by the connecting operation of the connecting portion, and the temperature rising characteristic can be secured. Since the heat of the heater device is directly transmitted to the covering member and indirectly to the covering member via the heat transfer means, the temperature distribution of the covering member can be easily made uniform.

According to the steering device of the second aspect, in addition to the effect of the first aspect, the heat transfer means overlaps both sides with the heat generating portion via the position opposed to the connection portion. It is possible to cover the space between the pair of edges with one heat transfer means, so that the number of parts can be reduced and the manufacturing cost can be reduced. Further, since the heat transfer means receives heat from both sides, it can be quickly heated.

According to the steering device of the third aspect, in addition to the effects of the first and second aspects, a good appearance can be realized by the covering member wound and sewn, and the sewing operation of the connecting portion of the covering member can be performed. Heating characteristics can be secured without the heater device being damaged by a jig or the like used at that time.

According to the steering device of the fourth aspect, in addition to the effect of any one of the first to third aspects, the use of the heat transfer means of the metal sheet provides good thermal conductivity and uniform temperature distribution. It is easy and the thickness can be reduced, so that a configuration suitable for the grip portion of the steering device can be easily realized.

According to the steering device of the fifth aspect, in addition to the effects of any one of the first to fourth aspects, the grip portion can be heated in a planar shape and the appearance can be improved, but the grip portion is damaged during the assembly operation. The easy-to-use net-shaped heat generating portion can be easily used, and the operational feeling and appearance can be improved while reducing the manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a steering device of the present invention.

FIG. 2 is an exploded perspective view of a part of the steering device with the part cut away.

FIG. 3 is a cross-sectional view taken along line II of FIG. 1 showing the steering device;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Steering wheel as a steering device 2 Steering wheel main body as a steering device main body 5 Rim part as a gripping part 21 Heater device 22 Skin as a covering member 23 Heat transfer means 50 Hole which constitutes a connection part

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Nobukazu Akaike 218 Aoshima-cho, Fuji-shi, Shizuoka Japan F-term in Japan Plastics Co., Ltd. 3D030 DB59 3K034 AA02 AA06 AA25 BA08 BB08 BC03 BC12 FA13 HA07 JA01 JA09 3K092 PP20 QA06 QB02 QB33 QB60 RF04 RF14 RF22 SS12 TT27 VV40

Claims (5)

[Claims] 1. A steering device main body having a grip portion, a covering member having a pair of connecting portions connected to each other and covering the grip portion, and the grip portion and the coating except for a position facing the connecting portion. A heater device provided with a heat generating portion disposed in a part between members; and a heater device disposed between the grip portion and the covering member, partially overlapping the heat generating portion and facing the connection portion. And a heat transfer means extending at a position and having better thermal conductivity than the covering member. 2. The steering device according to claim 1, wherein the heat transfer means has both sides overlapped with the heat generating portion via a position facing the connecting portion. 3. The steering device according to claim 1, wherein the covering member is attached to the steering device body with the covering member wound around the grip portion and the connection portions sewn to each other. 4. The steering apparatus according to claim 1, wherein the heat transfer means includes a metal sheet. 5. The steering device according to claim 1, wherein the heat generating portion has a net shape.