JP2015217777A - Heating and cooling device for steering wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating and cooling device for a steering wheel, which can regulate a temperature of a grip part.SOLUTION: A temperature of a surface of a grip part 5 is regulated by making a temperature-regulated heat medium flow through a small tube 21 arranged in a wave shape on the surface of the grip part 5, from a thick tube 22 arranged on the backside of the grip part 5. The small tube 21 is folded back from the vicinity of a center line in the circumferential direction of the grip part 5, on the front side of the grip part 5.

Description

  The present invention relates to a steering wheel for driving steering. More particularly, the present invention relates to a cooling / heating device for a steering wheel that can adjust the temperature of a grip portion of the steering wheel.

  In the present specification, in the front view when the steering wheel is in a neutral state, that is, when the vehicle is traveling straight (neutral position of the steering wheel), the uppermost end side of the steering wheel is the upper side and the lowermost side is the lower side. As above, the vertical direction is specified. In addition, the direction intersecting the up-down direction is the left-right direction. Furthermore, the surface on the driver side of the steering wheel is the front surface, the opposite surface is the back surface, the outer edge in the plan view of the steering wheel is the outer edge, the inner edge is the inner edge, An arc at the center of the outer periphery and the inner periphery is specified as the center line.

  In a car that has been left outdoors for a long time under hot sunlight, the grip part of the steering wheel is heated and heated, making it difficult to steer the grip part directly with bare hands. ing. Further, in a cold time, the surface of the grip portion is in a cold state, and it is difficult to perform steering by directly gripping the grip portion with bare hands.

  As a means for solving this problem, a steering wheel temperature control device (see Patent Document 1) has been proposed. In the invention described in Patent Document 1, when the grip portion is gripped, the surface of the grip portion does not become hot and the driver feels cold, or the surface of the grip portion does not get cold. It has a configuration that can make it feel warm.

  That is, the configuration is as shown in FIG. As shown in FIG. 34, the steering wheel 70 is provided with an annular grip portion 72, and an annular passage that is concentric with the grip portion 72 and through which a liquid heat medium flows is provided inside the grip portion 72. 75 is formed. Outside the steering wheel 70, a heat storage unit 76, a heat medium circulation path 73 for circulating a liquid heat medium between the steering wheel 70 and the heat storage unit 76, and heat exchange for exchanging heat in the heat storage unit 76 A chamber 77 and a Peltier element unit 78 that is a heat source of the heat storage unit 76 are provided.

  In Patent Document 1, in order to connect the annular passage 75 and the heat medium circulation path 73, the steering shaft 71 has a double pipe structure, and an introduction passage 74a and an annular passage 75 for supplying the heat medium to the annular passage 75 are provided. The lead-out passage 74b for discharging the heat medium from the steering pipe 71 is arranged at the center of the double pipe of the steering shaft 71.

  In Patent Document 1, an annular passage 75 must be formed in the grip portion 72, and the introduction passage 74 a and the outlet passage 74 b connected to the annular passage 75 are arranged at the center of the steering shaft 71. It has a configuration that must be kept.

  However, since the grip portion 72 is configured to rotate and the heat storage unit 76 is fixed to the vehicle body panel that does not rotate, the introduction passage 74a and the lead-out passage 74b are arranged at the center of the steering shaft 71. However, when the steering wheel 70 is steered, the introduction of the introduction passage 74a and the extraction passage 74b or the heat medium circulation passage 73 connected to the introduction passage 74a and the extraction passage 74b is twisted by the rotation of the grip portion 72.

  In order to connect an inflator and various switches of an airbag disposed in the steering wheel, an electric cable is disposed between the steering wheel serving as a rotating body and the vehicle body panel. Therefore, a clock spring (see Patent Document 2) has been proposed as a configuration for preventing the electric wire cable from being twisted by the rotation of the grip portion.

  The invention described in Patent Document 2 has a configuration as shown in FIG. That is, a flat cable 90 is used as an electric cable, and a configuration including an outer housing 81 having an outer peripheral wall portion 82 and an inner housing 83 having an inner peripheral wall portion 84 as a clock spring 80 for housing the flat cable 90. It has become. A cable storage chamber 85 is formed between the outer peripheral wall portion 82 and the inner peripheral wall portion 84. In the cable storage chamber 85, a plurality of idlers 87 and a reversing idler 88 are rotatably arranged. Are arranged at equal intervals.

Each idler 87 and reversing idler 88 are supported by a moving body 86. The moving body 86 is rotatably disposed between the inner housing 83 and the outer housing 81. The flat cable 90 inserted into the cable storage chamber 85 from the outer peripheral wall portion 82 is arranged along the inner peripheral surface of the outer housing 81 by a plurality of idlers 87, and is inverted by the reversing idler 87. After being wound around the inner peripheral wall portion 84 of the inner housing 83, the inner housing 83 is led out from the inner peripheral wall portion 84 to the outside.
Further, a cable guide wall 89 that reverses the flat cable 90 so as to be wound around the reverse idler 88 is supported by the moving body 86 so as to face the reverse idler 88.

  When the inner housing 83 rotates clockwise from the state shown in FIG. 35, the flat cable 90 is wound around the inner wall portion 84, while the reverse idler 88 revolves clockwise and moves inside the outer housing 81. The storage length of the flat cable 90 stored in the box is shortened. On the contrary, when the flat cable 90 is wound around the inner wall portion 84, the inner housing 83 rotates counterclockwise so that the reverse idler 88 is unwound from the inner wall portion 84 while unwinding. Revolves in the counterclockwise direction so that the flat cable 90 unwound from the inner wall portion 84 is arranged along the inner peripheral surface of the outer housing 81 by a plurality of idlers 87 and reverse idlers 88. It will be.

JP 2011-20648 A JP 2007-37201 A

  In the invention described in Patent Document 1, the surface temperature of the grip portion 72 can be controlled by flowing a heat medium through the annular passage 75 formed in the rim core portion in the grip portion 72. However, the grip part 72 is configured to be covered with foamed resin over the entire circumference of the rim cored bar part. In addition, since the foamed resin is a synthetic material with heat insulation properties, the temperature at the rim core metal part can quickly follow the temperature at the grip part 72 even if the temperature at the rim core metal part is quickly adjusted. It is difficult to let

  In general steering wheels, a rim core part, a boss part fitted to the steering shaft, and a spoke part that joins the boss part and the rim core part are formed by integral molding. However, as in Patent Document 1, in order to form the annular passage 75 in the rim core portion, a passage through which a heat medium flows through the spoke portion, the boss portion, and the steering shaft must be formed. Therefore, it is very difficult to configure the steering wheel by integral molding.

Further, in order to protect the driver when an impact load is applied to the vehicle, the steering wheel is deformed to reduce the impact force. In order to adjust the temperature on the surface of the grip portion of the steering wheel, it is necessary to flow a heat medium having a certain flow rate into the annular passage 75 formed in the rim core portion. Therefore, if the annular passage 75 is broken when the steering wheel is deformed, the circulating heat medium leaks from the broken portion.
Furthermore, as described above, the invention of Patent Document 1 has a problem that the heat medium circulation path 73 disposed in the steering shaft 71 is twisted by the rotation of the grip portion 72.

If the clock spring 80 described in Patent Document 2 is used, there is a possibility that the flat cable 90 can be stored so as not to be twisted between the steering wheel 70 and the vehicle body panel. However, when the clock spring 80 described in Patent Document 2 is used as a winding / rewinding device for a fluid tube such as a tube through which a liquid flows, the tube has a larger thickness and friction than the flat cable 90. The tube may be twisted by friction when the tubes are worn.
When the tube is twisted, the clock spring cannot be rotated smoothly, and the tube cannot be stored in the clock spring.

  Further, since the flat cable 90 has an appropriate hardness, the flat cable 90 is wound in the outer housing 81 while being wound around the inner wall portion 84 and unwound from the inner wall portion 84. In any case, the flat cable 90 can be wound up without slack. However, since the tube is made of a soft material, when winding is performed in the outer housing 81 while performing rewinding from the inner wall portion 84, loosening occurs and the winding is large. Problems will arise.

  The present invention solves the conventional problems and can adjust the temperature on the surface of the grip part without forming an annular passage in the rim core part. Moreover, the steering wheel can be used when an impact load is applied. An object of the present invention is to provide a cooling / heating device for a steering wheel that does not hinder the deformation of the steering wheel and that can be provided with a winding storage section for storing a tube through which a heat medium for adjusting the temperature flows.

The object of the present invention can be achieved by the inventions described in claims 1 to 7.
That is, a cooling and heating device for a steering wheel according to the present invention includes a rim cored bar disposed on a rotating outer peripheral part, a boss disposed on the inner side of the rim cored bar and coupled to a steering shaft, A cooling / heating device for a steering wheel, comprising: a spoke part that connects a rim core part and the boss part; and a grip part that covers the entire circumference of the rim core part with resin,
The main feature is that a flexible fluid pipe for flowing the liquid phase heat medium supplied from the heat medium supply device is provided in a wave shape on at least the surface of the grip portion.

  In the cooling / heating device for a steering wheel according to the present invention, the fluid pipe is piped in a wave shape in a state of being continuous in a direction intersecting the rotation direction of the grip part, and on the surface of the grip part, the grip The fluid pipes coming out from the outer peripheral edge side and the inner peripheral edge side of the portion are respectively piped separately so as to return from the appropriate positions between the inner peripheral edge and the outer peripheral edge and return to the outer peripheral edge and the inner peripheral edge. Is the main feature.

Furthermore, in the cooling / heating device for a steering wheel according to the present invention, when the fluid pipe is disposed inside the resin molded body, and the resin molded body is disposed on the surface side of the rim core part, A main feature is that the fluid pipe is piped in a waveform in a direction intersecting with the rotation direction of the rim cored bar.
Furthermore, the cooling / heating device for a steering wheel according to the present invention is characterized in that the heat medium circulates between the heat medium supply device and the fluid pipe.

In the cooling / heating device for a steering wheel according to the present invention, a winding storage portion for storing a tube connecting the heat medium supply device and the fluid pipe is provided between the heat medium supply device and the fluid pipe. The winding storage portion includes an annular outer housing attached to a vehicle body side fixing member, and an annular inner housing attached to the steering wheel, which is rotatably supported by the outer housing. A first wall portion provided in an annular shape along an outer peripheral edge of the outer housing and a boundary portion between the outer housing and the inner housing to separate the two, and substantially concentric with the first wall portion A separating wall portion arranged in a shape, a winding wall portion for tube winding formed along the inner peripheral edge of the inner housing and arranged substantially concentrically with the first wall portion, and the first wall And the separation wall A first opening, a second opening, and a third opening that are respectively formed on the winding wall portion and pass through the tube, and are arranged along an outer peripheral surface direction of the separation wall portion, and rotate with respect to the inner housing. A ring-shaped rotation plate arranged in a possible manner, a plurality of driven rollers rotatably supported by the rotation plate and arranged at a predetermined interval in the outer housing, a pair of reversing rollers, and a press A roller, and
The reversing roller and the pressing roller are arranged at positions facing each other, connected to the heat medium supply device, and the tube inserted into the outer housing from the first opening is guided to the driven roller. Then, the tube inserted between the reversing roller and the pressing roller is inserted into the inner housing from the second opening, and the tube inserted into the inner housing is wound around the winding wall portion. The main feature is that the tube that is stored in such a manner as to be taken out from the third opening to the outside of the winding housing portion and is taken out to the outside is connected to the fluid pipe.

  Further, in the cooling / heating device for a steering wheel according to the present invention, when the inner housing rotates to the maximum in the counterclockwise direction or the clockwise direction, the length dimension of the tube accommodated in the outer housing has the The main feature is that it is approximately one round of the inner circumference of the outer housing.

  In the cooling / heating device for a steering wheel according to the present invention, the rotation resistor supported by the inner housing and extending in the outer housing, the rotation plate, the driven rollers, and the reversing rollers. And a holding portion that rotatably supports the pressing roller, and the rotation resistor is configured to be in contact with the holding portion and configured to control the rotation of the rotating plate. It is a feature.

  In the present invention, since a flexible fluid pipe for flowing a liquid heat medium at least on the surface of the grip part is provided in a wave shape, an annular passage as in Patent Document 1 is formed in the rim core part. It is not necessary to keep it. In addition, since the fluid pipe is arranged on the surface of the grip portion, the temperature on the surface of the grip portion can be easily adjusted.

  Further, as disclosed in Patent Document 1, in order to communicate with the annular passage, it is not necessary to form a flow path for flowing a heat medium to the spoke portion, the boss portion, and further to the steering shaft. Therefore, a groove or the like for piping and storing the fluid pipe can be formed on the surface side of the grip part in which the rim core part is covered with a resin, for example, foamed resin. The steering wheel including it can be easily manufactured by integral molding.

  After the fluid pipe is piped in a groove or the like formed on the surface of the grip portion, the outer surface of the fluid pipe can be configured to be substantially flush with the surface of the grip portion. Then, an appropriate putty material is used to fill a gap formed between the fluid pipe and the groove for housing the fluid pipe, and a natural leather or synthetic leather skin is wrapped around the grip portion and sewn. Thus, the fluid pipe can be prevented from being visually recognized from the outside or sensed by the tentacles, and the design and visibility as a steering wheel can be improved.

  As long as the inner diameter of the fluid pipe can flow a predetermined amount of heat medium per unit time, the temperature on the surface of the grip portion can be adjusted sufficiently. Therefore, the outer diameter of the fluid pipe can be configured to a diameter corresponding to this, and a fluid pipe having a small outer diameter can be used. Moreover, the discharge amount of the heat medium protruding from the heat medium supply device can be reduced by adjusting the flow rate of the heat medium flowing in the fluid pipe.

  Further, the fluid pipe is piped in a wave shape in a state of being continuous in a direction intersecting the rotation direction of the grip part, and on the surface of the grip part, an appropriate position between the outer peripheral edge and the inner peripheral edge, for example, The pipe can be piped in a state where it is folded back to the outer peripheral edge side and the inner peripheral edge side with the vicinity of the center line of the grip portion as a boundary.

  By piping the narrow tube in this way, when an impact load is applied to the steering wheel, the corrugated narrow tube does not prevent the grip portion from being deformed in the direction of absorbing the impact load.

  The fluid pipe may be configured to be disposed in the resin molded body instead of being configured to be housed in the groove formed in the grip portion. Then, the resin molded body in which the fluid pipe is disposed is arranged on the surface side of the rim core part, and the resin molded body and the rim core part are integrally covered with a resin, for example, a foamed resin. I can leave.

  In the present invention, a winding storage unit for storing a tube connecting the heat medium supply device and the fluid pipe is provided between the heat medium supply device and the fluid pipe piped on the surface side of the grip portion. Can do. And the separation wall part which defines between both housings can be provided in the boundary part of the outer housing and inner housing in a winding storage part. Further, a plurality of driven rollers for guiding the tube in the outer housing, one reversing roller, and a pressing roller can be arranged at predetermined intervals.

  By configuring in this way, it is possible to prevent the tube housed in the outer housing and the tube wound in the inner housing from coming into contact with each other, and by friction when the tubes are worn, It is possible to reliably prevent the tube from being twisted.

  Further, the driven roller, the reversing roller, and the pressing roller can prevent the slack from occurring when the tube is wound in the outer housing. In particular, when the outer winding is performed, the pressing roller is pushed by the tube and the rotating plate can be rotated in the outer winding direction, so that it is possible to prevent the tube from becoming slack.

  In addition, by providing a rotation resistor in the inner housing, the rotation plate can be forcibly rotated in the outer winding direction by the rotation resistor even if some slack occurs during the outer winding. Therefore, the occurrence of slack can be prevented.

It is a front view of a grip part. (Example 1) It is a rear view of a grip part. (Example 1) FIG. 3 is a sectional view taken along line III-III in FIG. 1. (Example 1) It is a partially broken perspective view of a grip part. (Example 1) 1 is a schematic overall view of a cooling / heating device for a steering wheel. (Example 1) 7A is a detailed view of the flow path of the heat medium and FIG. 6B is a view as seen from the direction of the arrow in FIG. (Example 1) It is VII-VII sectional drawing of FIG.6 (b). (Example 1) It is the front view which attached the resin molding to the grip part. (Example 2) It is a perspective view of a resin molding. (Example 2) It is the top view (a) of a resin molding, AA sectional drawing (b) of Fig.10 (a), and BB sectional drawing (c) of Fig.10 (a). (Example 2) It is sectional drawing which attached the resin molding to the grip part. (Example 2) It is sectional drawing which shows the connection part in the edge part of a tube. (Example 2) It is sectional drawing which shows the state which attached the resin molding to the rib part. (Example 2) It is sectional drawing of a grip part. (Example 2) It is a graph which shows the time change of the flow rate which flows into a fluid pipe | tube, and the temperature in a grip surface. (Examples 1-4) It is the external appearance photograph of the winding storage part seen from the perspective state. (Examples 3 and 4) It is a photograph which shows the state which mounted | worn the winding storage part to the boss | hub part of a steering wheel when it sees from the back surface side of a steering wheel. (Examples 3 and 4) It is a photograph which shows the inside of the winding storage part seen from the front. (Example 3) It is the photograph inside the winding storage part seen from the perspective state. (Example 4) It is a photograph which shows arrangement | positioning of a tube when an inner side housing | casing rotates to the maximum in the clockwise direction. (Example 3) It is a photograph which shows arrangement | positioning of the tube in the position of the inner housing corresponding to the neutral position of a steering wheel. (Example 3) It is a photograph which shows arrangement | positioning of a tube when an inner housing rotates to the maximum counterclockwise direction. (Example 3) It is a photograph which shows the operation | movement direction of an inner housing, a reverse roller, and a tube when an inner housing rotates to the maximum in the clockwise direction. (Example 3) It is a photograph which shows the operation | movement direction of an inner housing, a reverse roller, and a tube when an inner housing rotates to the maximum counterclockwise direction. (Example 3) It is a perspective sectional view of a tube. (Example 3) It is explanatory drawing which shows the operation | movement direction of a rotation plate, the inversion roller, and a tube with rotation of an inner side housing. It is a photograph which shows the inside of the winding storage part seen from the front. (Example 4) It is a photograph which shows the inside of the winding storage part seen from the side surface. (Example 4) It is a photograph which shows the enlarged rotation resistor. (Example 4) It is a photograph which shows arrangement | positioning of a tube when an inner side housing rotates to the maximum clockwise direction. (Example 4) It is a photograph which shows arrangement | positioning of the tube in the position of the inner housing corresponding to the neutral position of a steering wheel. (Example 4) It is a photograph which shows arrangement | positioning of a tube when an inner side housing rotates counterclockwise to the maximum. (Example 4) It is explanatory drawing which shows the state which forcibly rotates a rotation plate with a rotation resistor at the time of rewinding of the tube from an inner side housing. It is a schematic block diagram of the steering wheel provided with the temperature control apparatus. (Conventional example 1) It is a longitudinal cross-sectional view of a clock spring. (Conventional example 2)

  Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. As the configuration of the cooling / heating device for a steering wheel according to the present invention, in addition to the shape and arrangement described below, if the shape and arrangement can solve the problems of the present invention, those shapes and arrangement are used. It can be adopted.

  The configuration of the first embodiment according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the steering wheel 1 includes, for example, an annular grip portion 5, and the grip portion 5 is usually disposed in a state where the upper end portion thereof is inclined with respect to the lower end portion toward the traveling direction of the vehicle. Has been. The steering wheel 1 is attached to a steering shaft (not shown) through a boss hole 4a formed in the boss portion 4.

  As shown in FIGS. 1 and 2, the steering wheel 1 includes a boss portion 4 having a boss hole 4 a connected to the steering shaft 62 shown in FIG. 17, a grip portion 5 held by a driver, and a boss portion 2 and a grip. The spoke portion 3 is connected to the rim cored bar portion 2 (see FIG. 3) in the portion 5. In the illustrated example, the spoke portion 3 is configured to include three spokes. Of the three spokes, one spoke part 3 has a structure in which a part is divided into two. The number of spokes 3 formed is not limited to a three-spoke configuration, and can be configured to include an appropriate number of two or more spokes.

  As shown in FIG. 3, the outer peripheral surface side of the rim core part 2 is covered with a foamed resin 6 molded using a mold or the like, and a grip part 5 is configured. The grip part 5 can cover the surface side of the foamed resin 6 with leather 5a as required.

As shown in FIG. 4, a corrugated groove 7 is formed on the outer surface of the grip part 5 in a wave shape in a direction intersecting the rotation direction of the grip part 5. A thick pipe groove 8 corresponding to about a half circumference is formed along the center line in the circumferential direction of the grip portion 5. The corrugated groove 7 and the thick tube groove 8 can be simultaneously formed when the foamed resin 6 covering the outer peripheral portion of the rim core metal portion 2 is formed by die molding.
On the surface of the grip portion 5, the corrugated groove 7 has an arrangement configuration in which the corrugated groove 7 is separated into an outer peripheral edge side and an inner peripheral edge side with the vicinity of the center line in the circumferential direction of the grip portion 5 as a boundary.

  And the thin tube 21 inserted into the corrugated groove 7 is also piped separately on the outer peripheral side and the inner peripheral side on the surface of the grip part 5 with the vicinity of the center line of the grip part 5 as a boundary. Become. On the back surface side of the grip portion 5, the narrow tube 21 is piped so as to cross between the outer peripheral edge side and the inner peripheral edge side, and is configured as one continuous pipe. Further, the thick tube 22 is piped along the center line on the back side of the grip portion 5.

  The thin tube 21 is connected in a continuous state in the right half and the left half of the grip portion 5, and a liquid phase for adjusting the surface temperature of the grip portion 5 is provided in the thin tube 21 and the thick tube 22. Heat medium 9 can flow. The thin tube 21 and the thick tube 22 constitute a fluid tube 20.

  In this way, the thin tubes 21 protruding from the outer peripheral edge side and the inner peripheral edge surface to the surface of the grip portion 5 are folded from the vicinity of the center line without being piped across to the opposite inner peripheral edge side or outer peripheral edge side, and the outer peripheral edge side and It is piped back to the inner periphery side. Further, since the thick tube 22 is piped along the center line on the back surface of the grip portion 5, when the impact load acts on the grip portion 5 and the grip portion 5 is deformed in the front-rear direction, the thin tube 21 and the thick tube 22 are arranged. The piping of the pipe 22 does not hinder the deformation of the grip portion 5.

  The thin tube 21 and the thick tube 22 can be configured by using a flexible metal tube such as an aluminum alloy, copper, or brass, or a resin material such as silicon or an olefin elastomer. As the thin tube 21 and the thick tube 22, for example, if a tube having an outer diameter of 1 to 2 mm and a wall thickness of 0.2 to 0.5 mm is used, the thin tube 21 or the thick tube 22 having an inner diameter of 0.5 to 1.0 mm. Can be configured.

  However, even if the outer diameter is about 4 mm in order to configure the thin tube 21 and the thick tube 22, it can be applied as the configuration of the thin tube 21 and the thick tube 22. Depending on the viscosity and heat capacity of the heat medium 9 to be used, the sizes of the thin tube 21 and the thick tube 22 can be appropriately selected. As the heat medium 9, an ethylene glycol aqueous solution or the like can be used, and it can be selected in consideration of market availability, ease of handling, and lack of toxicity.

  The thin tube 21 and the thick tube 22 can be arranged so as to be substantially flush with the surface of the grip portion 5. If there is a gap between the corrugated groove 7 and the thick tube groove 8 and the narrow tube 21 and thick tube 22 respectively inserted into the corrugated groove 7 and the thick tube groove 8, fill the gap with a putty material, etc. Can be kept. After that, by wrapping and sewing an outer skin such as natural leather or synthetic leather around the grip portion 5, the thin tube 21 and the thick tube 22 can be prevented from being exposed to the outside. When the driver grips the epidermis, it can be configured without feeling the presence of the narrow tube 21 or the thick tube 22 inside the epidermis, and the design of the steering wheel 1 is improved. be able to.

  The thin tubes 21 are arranged on the outer surface of the grip portion 5 so as to be in a dense state to some extent. Then, as shown in FIG. 1, the narrow tube 21 protruding from the rear surface side of the grip portion 5 to the front surface side is reversed at the reversing portion 7 a on the front surface side of the grip portion 5 and is directed to the rear surface side of the grip portion 5. It has become. And on the back side of the grip part 5, as shown in FIG. 2, the thin tube 21 is arranged in a direction crossing the grip part 5 by the straight part 7b.

  As described above, the thin tubes 21 arranged on the left and right sides of the grip portion 5 are respectively piped in a state of being continuous over a substantially half-circumferential region of the grip portion 5. Since the piping is separated into the outer peripheral edge side and the inner peripheral edge side with the vicinity of the center line of the grip portion 5 as a boundary, almost all surfaces of the grip portion 5 are covered. Moreover, the narrow tube 21 is piped separately on the outer peripheral edge side and the inner peripheral edge side of the grip portion 5 with the center line of the grip portion 5 interposed therebetween. Further, the thick pipe 22 is piped substantially along the center line of the grip portion 5.

  Therefore, when the impact load of the steering wheel 1 acts and the grip portion 5 is deformed to absorb the impact load, the thin tube 21 can be arranged so as not to prevent the deformation of the grip portion 5. In addition, since the narrow tube 21 and the thick tube 22 are configured by flexible tubes, the grip portion 5 can be easily deformed when an impact load is applied.

  As shown in FIGS. 2 and 3, a thick tube 22 that is larger on the inside and outside than the thin tube 21 is disposed in the groove 8 for the thick tube, and one end portion of the thick tube 22 on the lower side of the grip portion 5 is The other end portion on the upper side of the grip portion 5 is configured as a supply portion 22b to the thin tube 21.

  The inflow portion 22a is connected to a supply-side tube 24a through which a heat medium supplied from a heat medium supply device 10 (see FIG. 5), which will be described later, flows, and the supply portion 22b is connected to the narrow tube 21 and is connected to FIG. As indicated by the arrows, the heat medium flowing in the thick tube 22 can be supplied into the thin tube 21.

  The ends of the thin tubes 21 on the lower end side of the grip portion 5 are connected to the discharge side tubes 24b, respectively, and the heat medium flowing on the surface side of the grip portion 5 is returned to the heat medium supply device 10. .

(Configuration of cooling / heating device including heat medium supply device)
The configuration of the cooling / heating device will be described with reference to FIGS. The supply side tube 24a and the discharge side tube 24b shown in FIG. 2 are connected to the heat medium supply device 10 as shown in FIG. The supply side tube 24a connected to the heat medium supply device 10 can supply a liquid phase heat medium to the steering wheel 1 side by a pump 13 disposed in the middle of the tube 24a.

  The heat medium supplied to the steering wheel 1 flows into the thick tube 22 from the inflow portion 22a of the thick tube 22 shown in FIG. The heat medium that has flowed into the thick tube 22 flows into the narrow tube 21 from the supply portion 22b, and is supplied into the narrow tube 21 from the tube 24b on the discharge side after about a half turn around the grip portion 5. The heat medium discharged from the thin tube 21 is returned into the heat medium supply device 10 through the tube 24b on the discharge side. Then, heat exchange is performed in the heat medium supply device 10.

  When it is desired to warm the surface of the grip part 5 with a heat medium, the heat medium deprived heat medium can be warmed by the Peltier element 12 in the heat medium supply device 10 by warming the surface side of the grip part 5. Conversely, when it is desired to cool the surface of the grip part 5 with a heat medium, the heat medium warmed by the grip part 5 can be cooled in the heat medium supply device 10.

  The configuration of the cooling device according to the present invention includes a fluid pipe 20 including a thin pipe 21 and a thick pipe 22 piped to the grip portion 5 of the steering wheel 1, a heat medium supply apparatus 10, a heat medium supply apparatus 10, and a fluid pipe 20 And a configuration that connects the two.

  As a configuration for connecting the heat medium supply device 10 and the fluid pipe 20, a tube 24 including a supply-side tube 24a and a discharge-side tube 24b, a pump 13, and a winding storage unit 40 described later (Example 3, Example) 4).

  As shown in FIGS. 6 and 7, the configuration of the heat medium supply device 10 includes a heat exchanging unit using a Peltier element 12 and a heat sink 11 provided in the heat exchanging unit. That is, as shown in FIG. 6A and FIG. 7, the Peltier element 12 that is in contact with the flow path 14 while the heat medium 9 flows in the flow path 14 disposed in a waveform in the heat medium supply unit 10. The heat is put in and out.

  When the heat medium 9 flows in the heat medium supply device 10, the heat medium 9 flowing into the heat medium supply device 10 from the tube 24b on the discharge side is cooled when the grip portion 5 is cooled, and the grip portion 5 When you warm up, you will be warmed.

  As a heat source for exchanging heat with respect to the heat medium 9, the configuration using the Peltier element 12 has been described, but the heat source for the heat medium 9 is not limited to the configuration using the Peltier element 12, A known heat source can be used.

(Flow rate of heat medium)
The heat medium 9 exchanged in the heat medium supply device 10 is supplied to the supply side tube 24a via the pump 13, and then supplied from the thick tube 22 to the thin tube 21. The surface temperature of the grip portion 5 is adjusted by the heat medium flowing in the narrow tube 21.

Therefore, how much heat medium 9 is allowed to flow in the narrow tube 21 to adjust the surface temperature of the grip portion 5 will be described with reference to FIG.
FIG. 15 shows the measurement of the temperature change on the surface of the grip portion 5 when a heat medium having a water temperature of 22 degrees is supplied into the narrow tube 21 piped to the grip portion 5. The vertical axis represents the temperature on the surface of the grip part 5, and the horizontal axis represents the elapsed time since the heat medium 9 was supplied. The grip portion 5 is always irradiated with infrared rays, and the temperature of the black panel is set to 110 ° C. As the pump 13, a pump having a set voltage of 12V is used.

  The temperature of the grip part 5 at the 1 o'clock position in the steering wheel 1 when the heat medium 9 is flowed at 17 ml / min is indicated by a thin dotted line, and the temperature of the grip part 5 at the 4 o'clock position is indicated by a thick dotted line Yes. At this time, the drive voltage supplied to drive the pump 13 is 4V.

  The temperature of the grip part 5 at the 1 o'clock position in the steering wheel 1 when the heat medium 9 is flowed at 30 ml / min is shown by a thin solid line, and the temperature of the grip part 5 at the 4 o'clock position is shown by a thick solid line. Show. At this time, the drive voltage supplied to drive the pump 13 is 12V.

  The 1 o'clock position and the 4 o'clock position are the steering wheel 1 when the steering wheel 1 in the neutral position is viewed from the front, with the upper end of the steering wheel 1 at 12 o'clock and the lower end at 6 o'clock. The part of the grip part 5 is specified by looking at 1 as the dial of the watch.

  As can be seen from FIG. 15, the higher the flow rate of the heat medium 9, the greater the degree of temperature decrease on the surface of the grip portion 5 than when the heat medium 9 is flowed less. And the grip part 5 can be cooled efficiently.

  The configuration of the second embodiment according to the present invention will be described with reference to FIGS. In the configuration of the second embodiment, the same reference numerals as those used in the first embodiment are used for the same configurations as those of the first embodiment, and the duplicate description is omitted.

  FIG. 9 shows a perspective view of a resin molded body 30 in which the thin tube 21 of the fluid tube 20 is disposed. The resin molded body 30 is formed in a tube shape 36 that follows the outer surface shape of the grip portion 5 as the shape of the portion disposed in the grip portion 5. Then, both end portions of the thin tube 21 piped in the resin molded body 30 are connected to a supply side tube 24a and a discharge side tube 24b (not shown) through a connection portion 37.

  As shown in FIG. 8, when the resin molded body 30 is arranged in the grip portion 5, the narrow tube 21 in the resin molded body 30 shown in FIG. 9 is piped in a wave shape with respect to the circumferential direction of the grip portion 5. Will be. Although FIG. 8 shows a configuration in which two resin molded bodies 30 are arranged around the connection portion with the spoke portion 3, the resin molded body 30 is arranged at the connection portion between each spoke portion 3 and the grip portion 5. Thus, a configuration in which the thin tube 21 is piped over substantially the entire circumference of the grip portion 5 can be provided. That is, the tube-shaped portion 36 of the resin molded body 30 shown in FIG. 9 can be formed long along the circumferential direction of the grip portion 5.

  FIG. 10 (a) shows a plan view of the resin molded body 30, and FIG. 10 (b) shows a cross-sectional view taken along line AA ′ of FIG. 10 (a). FIG. 10C is a sectional view taken along the line BB ′ of FIG. As shown in FIG. 10, the surface side of the thin tube 21 can be configured to be covered with a resin material. With this configuration, when the resin molded body 30 is attached to the grip portion 5, the thin tube 21 does not protrude to the surface side of the grip portion 5.

  And as a structure which attached the resin molding 30 to the grip part 5, it becomes a structure shown in FIG. Synthetic resin leather or leather 5a can be wound around the outer peripheral surface of the resin molded body 30.

  9 shows a shape in which the surface side of the grip portion 5 is covered with the resin molded body 30, the configuration of the resin molded body 30 is not limited to this configuration. For example, as a configuration of the resin molded body 30 covering the grip portion 5, a configuration using two resin molded bodies 30 may be used.

  The configuration of one resin molded body 30 is a shape that covers up to the front of the center line in the circumferential direction on the front surface side of the grip portion 5, and the configuration of the other resin molded body 30 is formed around the back side of the grip portion 5. It is also possible to configure it so as to cover up to the front of the center line in the circumferential direction on the surface side of the grip part 5. Then, the two resin molded bodies 30 can be arranged such that the respective connection portions 37 (not shown) are arranged on the side of the spoke portions 3 (not shown).

  In this way, the two resin molded bodies 30 are configured to cover both the front and back surfaces of the grip part 5, so that the thin tubes in the two resin molded bodies 30 are folded back on the surface side of the grip part 5 with the vicinity of the center line as a boundary. It will be piped in the state. As a result, when the impact load acts on the grip part 5 and the grip part 5 is deformed, the respective thin tubes 21 piped to the two resin molded bodies 30 may prevent the grip part 5 from being deformed. Absent.

(Connection between narrow tube, thick tube and tube)
The tube 24 connecting the thin tube 21 disposed in the resin molded body 30 and the heat medium supply device 10 (see FIG. 5) can be connected using a connection method as shown in FIG. In the connection configuration shown in FIG. 12, an enormous portion 32 is formed at the end of the thin tube 21, the end of the tube 24 connected to the thin tube 21 is expanded to enclose the enormous portion 32 therein, By fixing the end portion of the wrapped tube 24 to the thin tube 21 with the fastener 31, the tube 24 and the thin tube 21 can be connected in a liquid-tight state.

The configuration in which the enormous portion 32 of the thin tube 21 is wrapped with the tube 24 can prevent the connection state with the tube 24 from dropping. Furthermore, the use of the fastener 31 can surely prevent the dropout. This connection method can also be used as a connection method between the tube 24 and the thick tube 22.
For connection between the tube 24, the thin tube 21, and the thick tube 22, a conventionally known connection method in a liquid-tight state can be employed without using the above-described connection method.

(Mounting the resin molding to the grip)
Next, the structure which mounts the resin molding 30 in the grip part 5 using FIG. 11 is demonstrated. The resin molded body 30 shown in FIG. 9 is arranged at a predetermined position in a mold (not shown) together with the steering core part 2 arranged in advance in a mold (not shown). Then, as shown in FIG. 11, the grip portion 5 is molded by covering the foamed resin 6 from the state in which the periphery of the rim core metal portion 2 is wrapped with the molded body 30 by inkjet molding.

  Subsequently, a configuration for mounting the resin molded body 30 on the grip portion 5 will be described with reference to FIGS. 13 and 14. As shown in FIG. 13, positioning pins 33 may be integrally provided on the resin molded body 30 and fixed to the rim cored bar portion 2. The positioning pin 33 is inserted into the positioning hole 34 formed in the rim core metal part 2 to adjust the distance between the resin molded body 30 and the rim core metal part 2, and the positioning pin 33 is supported by the support part 35 on the rim core metal. Fix so that it does not move from part 2.

Thereafter, as shown in FIG. 14, the grip portion 5 is molded by the foamed resin 6 in a state where the resin molded body 30 is wrapped around the rim core metal portion 2 by injection molding. The positioning hole 34 can be formed simultaneously with the molding of the rim core part 2.
The foamed resin 6 can have a pattern transferred at the time of molding. Alternatively, after the foamed resin 6 is formed to form the grip portion 5, leather 5a or the like can be wound and decorated.

  The configuration of the third embodiment according to the present invention will be described with reference to FIGS. In the configuration in the third embodiment, the same reference numerals as those used in the first and second embodiments are used for the same configurations as those in the first and second embodiments, so that a duplicate description is omitted.

  In the third embodiment, a winding storage unit that connects between the heat medium supply device 10 and the fluid pipe 20 provided in the grip unit 5, winds up the tube 24 through which the heat medium 9 flows, and performs rewinding and storage. 40 is arranged between the vehicle body panel and the boss part 4 of the steering wheel 1.

  FIG. 16 shows a photograph of the winding storage unit 40 viewed from an oblique direction, and FIG. 17 shows a configuration in which the winding storage unit 40 is mounted on the back surface of the boss portion of the steering wheel 1. The winding storage unit 40 includes an outer housing 42 that is mounted on the vehicle body panel, and an inner housing 43 that is rotatably supported by the outer housing 42 and is mounted on the boss portion 4.

  As shown in FIGS. 16 and 18, the outer housing 42 and the inner housing 43 are formed in an annular shape in plan view, and a first wall portion 42 a is erected on the outer peripheral edge of the outer housing 42. Has been. In addition, a winding wall portion 43 a is erected on the inner peripheral edge of the inner housing 43.

  A separation wall 44 is disposed at the boundary between the inner housing 43 and the outer housing 42, and the tube 24 accommodated in the wound state in the outer housing 42 and the outer housing 42 in the inner housing 43. The tube 24 wound in the direction opposite to the winding direction inside is configured to be separated.

  In the outer housing 42, a plurality of driven rollers 50 arranged at a predetermined interval and a pair of reversing rollers 51 and a pressing roller 52 are arranged. Each driven roller 50, reversing roller 51, and pressing roller 52 are rotatably supported by a ring-shaped rotating plate 46 disposed along the outer peripheral direction of the separation wall portion 44 via a holding portion 48. The reversing roller 51 and the pressing roller 52 are arranged to face each other.

  The separation wall portion 44 and the rotation plate 46 are fixed by a locking structure including a locking claw and a locking receiving portion (not shown). In some cases, the separation wall portion 44 and the rotation plate 46 may be integrally formed.

  The rotation plate 46 is configured to rotate with respect to the inner housing 43 that rotates in conjunction with the rotation of the steering wheel 1. Each driven roller 50, reversing roller 51, and pressing roller 52 includes the inner housing 43. It is configured to revolve while rotating.

  An annular groove for guiding the tube 24 can be formed on the outer peripheral surface of each driven roller 50, reversing roller 51, and pressing roller 52. The annular groove can be constituted by flanges formed at both axial ends of each driven roller 50, reversing roller 51, and pressing roller 52. By forming the annular groove, the tube 24 can be guided smoothly.

  The distal end portion on the other end side of the tube 24 whose one end portion is connected to the heat medium supply device 10 is inserted into the outer housing 42 through a first opening 42b formed in the first wall portion 42a. It is wound around the roller 51 and introduced into the inner housing 43 from between the reversing roller 51 and the pressing roller 52 through the second opening 44 a formed in the separation wall portion 44. The distal end portion of the tube 24 introduced into the inner housing 43 is wound up in a direction opposite to the winding direction in the outer housing 42 by the winding wall portion 43a. The distal end portion of the tube 24 wound around the winding wall portion 43a is led out of the winding storage portion 40 from the third opening 43b formed in the winding wall portion 43a and piped to the grip portion 5 of the steering wheel 1. Connected to the fluid pipe 20.

  In the winding storage unit 40, the storage amount of the tube 24 stored in the winding storage unit 40 is substantially constant by the winding in the outer housing 42 and the winding in the inner housing 43. It is comprised so that it may become. Even when the steering wheel 1 is rotated, the length dimension of the tube 24 arranged outside the winding device 40 is not changed.

  Since the winding storage unit 40 is configured in this way, the distance between the heat medium supply device 10 and the winding storage unit 40 and the fluid pipe 20 piped to the winding storage unit 40 and the grip unit 5 are The distance between them can always be maintained in a substantially constant state regardless of the rotation operation of the steering wheel 1. The length dimension of the tube 24 that can be wound up to the maximum in the outer housing 42 can be set to a length corresponding to substantially one round of the inner circumferential circle of the first wall portion 42a.

  In this way, by configuring the maximum length of approximately one turn so that it can be wound in the outer housing 42, the tube 24 is not wound in an overlapping manner in the outer housing 42. Can be smoothly wound and rewound.

(Taking up and rewinding the tube in the winding storage)
20 to 26, how the tube 24 is wound and unwound between the outer housing 42 and the inner housing 43 in accordance with the rotation of the steering wheel 1 will be described.

  20 to 25, in order to clarify the position of the tube 24 shown in the photograph, the tube 24 is also shown by a white solid line, and the tube 24 is shown in a state of being superimposed on the photograph. In FIG. 26, the illustration of the driven roller 50 is partially omitted, and the tube 24 is indicated by a dotted line. Further, in FIG. 26, the steering wheel 1 is illustrated as moving to the maximum left rotation position or the maximum right rotation position from the neutral position by about two rotations.

  FIGS. 20 and 26 (a) show a state when the steering wheel 1 (see FIG. 8) is rotated to the left as much as possible. In this state, in the outer housing 42, the tube 24 is guided along the inner peripheral surface of the first wall portion 42a between the first opening 42b and the reversing roller 51, and the tube 24 reversed by the reversing roller 51 is From the second opening 44a, the inside of the inner housing 43 is led to the outside of the winding housing part 40 from the third opening 43b of the winding wall part 43a. At this time, the tube 24 is accommodated in the outer housing 42 in a wound state for substantially one round of the inner circumferential circle of the first wall portion 42a.

  FIG. 26B shows a state in which the steering wheel 1 is rotated clockwise from the position where it is rotated counterclockwise to the neutral position. As the steering wheel 1 rotates to the right, the inner housing 43 rotates in the clockwise direction in the drawing, as indicated by the white arrow. The tube 24 is wound around the winding wall 43a by the rotation of the inner housing 43, and the tube 24 in the outer housing 42 moves from the reversing roller 51 into the inner housing 43. .

  Along with this, the reversing roller 51 revolves in the clockwise direction while rotating, and the separation wall portion 44 rotates in the clockwise direction by the tube 24 that moves from the outer housing 42 to the inner housing 43. Further, since the separation wall portion 44 is interposed between the inner housing 43 and the outer housing 42, the tube 24 introduced from the outer housing 42 into the inner housing 43 and the tube 24 in the outer housing 42 are in friction. It is possible to prevent the movement of the tube 24 from being disturbed by contact.

  The state of rotation in the vicinity of the reversing roller 51 when the tube 24 in the outer housing 42 is rewound and the rewound tube 24 is wound in the inner housing 43 is shown in FIG. That is, the inner housing 43 rotates in the clockwise direction, and the tube 24 moves into the inner housing 43 while the moving direction is changed by the reversing roller 51. The reversing roller 51 rotates smoothly in the counterclockwise direction as the tube 24 moves, so that the tube 24 moves smoothly.

  When the steering wheel 1 returns to the neutral position, the state shown in FIGS. 21 and 26C is obtained. In this state, the reversing roller 51 moves in the outer housing 42 by about a half turn. Then, the tube 24 that has been rewound when the reversing roller 51 moves by a half circumference is wound around the winding wall 43a by about one half.

  Further, when the steering wheel 1 is rotated rightward, the state shown in FIG. At this time, the tube stored in the outer housing 42 is further rewound, and the rewound portion is wound up in the inner housing 43.

  When the steering wheel 1 is fully rotated to the right rotation position, the state shown in FIGS. 22 and 26 (e) is obtained. In this state, most of the tubes 24 in the winding storage unit 40 are wound by the winding wall 43a.

  Next, the movement of the tube 24 in the winding storage portion 40 when the steering wheel 1 that has been at the maximum clockwise rotation position is rotated to the maximum at the counterclockwise rotation position is shown in FIGS. 24, 26 (f) to (j). ).

  As shown in FIG. 26 (f), when the steering wheel 1 is rotated from the right rotation position to the left rotation position, the inner housing 43 rotates counterclockwise as shown in FIG. The tube 24 wound around 43a is unwound and discharged into the outer housing 42 through the second opening 44a of the separation wall 44. The tube 24 discharged to the outer housing 42 rotates the rotating plate 46 counterclockwise while pressing the pressing roller 52.

  Then, the direction is reversed by the pressing roller 52, and the film is wound into the outer housing 42 while being guided by the reversing roller 51 and the driven roller 50. FIG. 26G shows a state in which the tube 24 is wound up somewhat in the outer housing 42 from the right rotation position.

  When an excessive pressing force is applied from the tube 24 by using the pressing roller 52, the pressing roller 52 rotates to release the excessive pressing force and reverse the tube 24 to the reversing roller 51 side. Can do. In addition, the tube 24 can be prevented from moving in the axial direction of the pressing roller 52 by flanges provided at both ends of the pressing roller 52.

  Further, it is desirable that the rotating plate 46 is rotated by the pressing force from the tube 24 and that the frictional resistance with the tube 24 is reduced. The configuration of the tube 24 can be configured as shown in FIG.

  That is, for example, it is possible to have a configuration in which three tubes 24 are arranged adjacently in parallel. The adjacent tubes 24 can be joined and bundled using an elastic joining material 56. For example, the tube 24 on one end side can be used as a supply-side tube 24a that supplies a heat medium to the fluid pipe 20 of the grip portion 5, and the heat medium discharged from the fluid pipe 20 on the other end side tube 24 can be used. Can be used as a discharge-side tube 24b that returns the heat to the heat medium supply device 10.

The tube 24 disposed in the intermediate portion can be configured such that a wire 55 constituting the tube 24, which is moderately higher in rigidity than a soft tube made of silicon, for example, is inserted.
By configuring the tube 24 in this way, the tube 24 can be configured as a tube having an appropriate bending rigidity without bending or twisting. When the pressing roller 52 is pressed by the tube 24 to rotate the rotating plate 46, an appropriate pressing force can be applied to the pressing roller 52.

  When a flexible tube is used as the material of the tube 24, it is predicted that the slip on the outer surface of the tube 24 will be deteriorated. Improved slip on the surface. Further, the slippage on the outer surface of the tube 24 is also improved by using the freely driven roller 50, the reversing roller 51, and the pressing roller 52.

  The configuration for improving the slip on the outer surface of the tube 24 can be performed by improving the tube 24 itself. For example, as the material of the tube 24, the tube 24 can be configured by using a material impregnated with a lubricant or using a silicon material. In addition, the tube 24 is made to slide smoothly by applying a lubricant such as oil to the outer surface of the tube 24 or by immersing the tube 24 in the lubricant. You can also.

  FIG. 26 (h) shows a state in which the steering wheel 1 has returned to the neutral position. Even in the neutral position, the tube 24 is in contact with the pressing roller 52 as compared with the case of FIG. 26C showing the case where the counterclockwise rotation position returns to the neutral position. In FIG. 26 (c), the tube 24 is in a state of being half-wound around the reversing roller 51.

  Further, when the steering wheel 1 rotates in the left direction, the state shown in FIG. 26 (i) is obtained, the pressing roller 52 is pressed, and the rotation plate 46 further advances in the counterclockwise direction. The tube 24 discharged inside is accommodated in the outer housing 42 along the inner peripheral surface of the first wall portion 42a.

  Further, when the steering wheel 1 is rotated to the maximum left rotation position, the state shown in FIG. Most of the tube 24 is housed in the outer housing 42, and the tube 24 is hardly wound in the inner housing 43.

  Thus, as the steering wheel 1 rotates, the length of the tube 24 wound and stored in the outer housing 42 and the length of the tube 24 wound and stored in the inner housing 43 are as follows. The sum of the length dimensions can be made substantially constant.

  Although the tube 24 moves between the outer housing 42 and the inner housing 43, a separation wall portion 44 that is rotatably arranged is provided between the outer housing 42 and the inner housing 43. The tube 24 housed in 43 and the tube 24 housed in the outer housing 42 are prevented from coming into direct contact by the separation wall 44. Therefore, the tube 24 accommodated in the inner housing 43 and the tube 24 accommodated in the outer housing 42 are not in direct contact with each other, and movement of the tube 24 is not hindered.

  Next, the structure of Example 4 which concerns on this invention is demonstrated using FIGS. 27-33. In the configuration of the fourth embodiment, the same reference numerals as those used in the first to third embodiments are used for the same configurations as those of the first to third embodiments, thereby omitting redundant description.

  27-29 differ from the structure in Example 3 by the point which provided the rotation resistance body 60 which forcibly rotates the rotation plate 46 as a structure of the winding storage part 40 which concerns on Example 4. FIG. ing. Other configurations are the same as those in the third embodiment.

  The rotation resistor 60 is provided in the inner housing 43 and is configured to be able to contact the holding portion 48 that supports the driven roller 50, the reverse roller 51, and the pressing roller 52.

  That is, when the rotation plate 46 does not rotate with the inner housing 43 and the rotation is stopped, the rotation resistor 60 provided in the inner housing 43 is attached to the holding portion 48 as the steering wheel 1 rotates. The rotating plate 46 that is in contact with and stopped is rotated. Then, the rotating plate 46 is rotated so that the tube 24 discharged from the inner housing 43 into the outer housing 42 is wound up in the outer housing 42.

  As shown in FIG. 29, an inclined surface 60a is formed on the side surface of the rotation resistor 60 that contacts the holding portion 48. When an excessive load is applied to the rotation resistor 60, the inclined resistor 60a holds the inclined resistor 60a. Part 48 can be overcome. The inclined surfaces can be formed on both side surfaces of the rotation resistor 60 in advance. Then, an excessive load is prevented from acting on the steering wheel 1 when the steering wheel 1 is steered.

  That is, when the rotational force in the winding direction outside the rotation plate 46 by the rotation resistor 60 becomes larger than a predetermined magnitude for some reason, the rotation resistor 60 is driven by the driven roller 50 and the reversing roller 51. Therefore, it is possible to prevent the tube 24 from being abnormally pulled, because the holding portion 48 supporting any one of the pressing rollers 52 can be overcome.

  25, the configuration in which the three tubes 24 are connected by the bonding material 56 has been described. However, instead of bonding the three tubes 24 by the bonding material 56 as shown in FIG. A bundled configuration can also be used. Alternatively, the binding band 67 and the bonding material 56 may be used in combination.

(Take-up of the tube in the outer housing)
When the rotating plate 46 does not rotate along with the rotation of the inner housing 43 when the tube 24 wound around the outer housing 42 is rewound and wound in the inner housing 43 In general, the tube 24 unwound from the inner housing 43 is discharged into the outer housing 42, and the efficiency is improved when the rotating plate 46 is rotated by the discharged tube 24. Can act in a functional manner.

  FIG. 30 shows a state when the steering wheel 1 is returned from the right rotation position toward the neutral position. The rotational driving of the rotating plate 46 by the tube 24 at this time shows the same operation as described in FIGS. 26 (f) to 26 (g) in the third embodiment.

  However, as shown in FIG. 33A, while the tube 24 is being wound in the outer housing 42, as shown in FIG. 33B, the pressing roller 52 and the reversing roller 51 are turned on. If the tube 24 discharged from the inner housing 43 accumulates in between, the rotation plate 46 does not rotate in the direction of winding the tube 24 in the outer housing 42.

  Even if the rotation plate 46 stops rotating, the rotation of the steering wheel 1 causes the inner housing 43 to continue to rotate in the counterclockwise direction. Therefore, the rotation resistor 60 provided on the inner housing 43 is closest in the rotation direction. It comes into contact with the holding part 48. Then, the holding part 48 is pressed by the rotational resistor 60. Then, as shown in FIG. 33C, the tube 24 accumulated between the pressing roller 52 and the reversing roller 51 is released, and the rotating plate 46 can rotate in the direction in which the tube 24 is wound. it can.

  FIG. 31 shows a state in the winding storage unit 40 when the steering wheel 1 returns from the right rotation position to the neutral position, and FIG. 32 shows the winding storage unit when the steering wheel rotates to the left rotation position. The state in 40 is shown.

  As described above, by providing the rotation resistor 60 in the inner housing 43, the rotation plate 46 is forcibly rotated even when the rotation plate 46 does not rotate and is stopped when the steering wheel 1 is rotated. be able to. When an excessive load is applied to the rotation resistor 60, the rotation resistor 60 can get over the holding portion 48 that has been pressed so as not to be a large load with respect to the rotation of the steering wheel 1. .

  As mentioned above, although the structure of the Example of this invention was demonstrated, the Example mentioned above was shown as an example and is not intending limiting the range of invention. In addition to the above-described configuration, any shape and configuration that can solve the problems of the present invention can be employed.

  The present invention can be suitably applied to a steering wheel cooling / heating device to which the technical idea of the present invention can be applied.

  DESCRIPTION OF SYMBOLS 1 ... Steering wheel, 2 ... Rim mandrel part, 5 ... Grip part, 7 ... Wave groove, 8 ... Thick pipe groove, 10 ... Heat medium supply device, 20 ... Fluid pipe, 21 ... Thin pipe, 22 ... Thick pipe, 24 DESCRIPTION OF SYMBOLS ... Tube, 30 ... Resin molding, 31 ... Fastener, 32 ... Enlarged part, 40 ... Winding storage part, 42 ... Outer housing, 43 ... Inner housing, 43a ... Winding wall part, 44 ... Separation wall part, 46 DESCRIPTION OF SYMBOLS ... Rotary plate, 48 ... Holding part, 50 ... Driven roller, 51 ... Reversing roller, 52 ... Pressure roller, 60 ... Rotation resistor, 72 ... Grip part, 73 ... Heat-medium circulation path, 75 ... Annular path, 76 ... thermal storage unit, 78 ... Peltier element unit, 80 ... clock spring, 81 ... outer housing, 83 ... inner housing, 85 ... cable housing chamber, 86 ... moving body, 87 ... idler, 88 ... reverse idler, 89 ... Burugaido wall, 90 ... flat cable.

Claims (7)

A rim cored bar disposed on the rotating outer peripheral part, a boss disposed on the inner side of the rim cored bar and coupled to a steering shaft, and a spoke coupling the rim cored bar and the boss. A steering wheel cooling / heating device comprising a portion and a grip portion in which the entire circumference of the rim core portion is covered with resin,
A cooling / heating device for a steering wheel, characterized in that a flexible fluid pipe for flowing a liquid phase heat medium supplied from a heat medium supply device is provided in a wave shape on at least a surface of the grip portion.   The fluid pipe is piped in a wave shape in a state of being continuous in a direction intersecting with the rotation direction of the grip part, and the fluid exiting from the outer peripheral side and the inner peripheral side of the grip part on the surface of the grip part 2. The pipe according to claim 1, wherein the pipes are separately piped so as to return from the appropriate positions between the inner peripheral edge and the outer peripheral edge and return to the outer peripheral edge and the inner peripheral edge. Steering wheel cooling / heating device. The fluid pipe is piped inside the resin molded body;
When the resin molded body is disposed on the surface side of the rim core metal part, the fluid pipe in the resin molded body is piped in a waveform in a direction intersecting with the rotation direction of the rim core metal part. The cooling / heating device for a steering wheel according to claim 1, wherein   The cooling / heating device for a steering wheel according to any one of claims 1 to 3, wherein the heat medium circulates between the heat medium supply device and the fluid pipe. Between the heat medium supply device and the fluid pipe, a winding storage portion for storing a tube connecting the heat medium supply device and the fluid pipe is provided,
The winding storage portion is an annular outer housing mounted on a vehicle body side fixing member;
An annular inner housing mounted on the steering wheel, rotatably supported by the outer housing;
A first wall portion erected in an annular shape along the outer peripheral edge of the outer housing;
A separation wall portion provided at a boundary portion between the outer housing and the inner housing to separate the two and disposed substantially concentrically with the first wall portion;
A winding wall portion for tube winding formed along the inner peripheral edge of the inner housing and arranged substantially concentrically with the first wall portion;
A first opening, a second opening, and a third opening formed in the first wall portion, the separation wall portion, and the winding wall portion, respectively, through which the tube is inserted;
A ring-shaped rotating plate that is arranged along the outer peripheral surface direction of the separation wall and is arranged to be rotatable with respect to the inner housing;
A plurality of driven rollers, a pair of reversing rollers and a pressing roller, which are rotatably supported by the rotating plate and arranged at predetermined intervals in the outer housing;
With
The reversing roller and the pressing roller are arranged at positions facing each other,
The tube connected to the heat medium supply device and inserted into the outer housing from the first opening is guided by the driven roller and passes between the reversing roller and the pressing roller, and the second opening. The tube inserted into the inner housing from the third opening is housed so as to be able to be wound around the winding wall portion, and from the third opening to the outside of the winding housing portion. The cooling / heating device for a steering wheel according to any one of claims 1 to 4, wherein the tube taken out and connected to the outside is connected to the fluid pipe.   When the inner housing rotates to the maximum in the counterclockwise direction or the clockwise direction, the length of the tube accommodated in the outer housing is approximately one turn of the inner circumference of the outer housing. The cooling / heating device for a steering wheel according to claim 5. A rotation resistor supported by the inner housing and extending into the outer housing;
A holding portion that is supported by the rotating plate and rotatably supports the driven rollers, the reversing roller, and the pressing roller;
7. The cooling / heating device for a steering wheel according to claim 5, wherein the rotation resistor is configured to be able to control rotation of the rotating plate by contacting the holding portion.