WO2013151385A1 - Volant de direction ayant un élément chauffant, et dispositif à sécurité intégrée l'utilisant - Google Patents

Volant de direction ayant un élément chauffant, et dispositif à sécurité intégrée l'utilisant Download PDF

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Publication number
WO2013151385A1
WO2013151385A1 PCT/KR2013/002876 KR2013002876W WO2013151385A1 WO 2013151385 A1 WO2013151385 A1 WO 2013151385A1 KR 2013002876 W KR2013002876 W KR 2013002876W WO 2013151385 A1 WO2013151385 A1 WO 2013151385A1
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WO
WIPO (PCT)
Prior art keywords
heating element
unit
steering wheel
heating
lines
Prior art date
Application number
PCT/KR2013/002876
Other languages
English (en)
Korean (ko)
Inventor
조만호
Original Assignee
(주)화진
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR20130036995A external-priority patent/KR101488512B1/ko
Application filed by (주)화진 filed Critical (주)화진
Priority to CN201380028563.5A priority Critical patent/CN104487314B/zh
Priority to JP2015504504A priority patent/JP6031590B2/ja
Publication of WO2013151385A1 publication Critical patent/WO2013151385A1/fr
Priority to US14/507,527 priority patent/US9972996B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04—Hand wheels
    • B62D1/06—Rims, e.g. with heating means; Rim covers
    • B62D1/065—Steering wheels with heating and ventilating means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/005—Heaters using a particular layout for the resistive material or resistive elements using multiple resistive elements or resistive zones isolated from each other
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/007—Heaters using a particular layout for the resistive material or resistive elements using multiple electrically connected resistive elements or resistive zones

Definitions

  • the heating performance of the rim does not decrease, and heating is caused by damage of the heating element.
  • the rim of the steering wheel which is an element of the automobile steering system, is always operated by the driver, and is studied in various angles, such as high-quality appearance, convenience of grip, and adoption of functional elements. It is being developed.
  • the temperature of the steering wheel rim is lower than the body temperature, so that it is inconvenient for the driver to grip properly, which acts as an obstacle to safe driving.
  • the heating wire 3 is embedded in the rim 5 of the steering wheel.
  • the coating film becomes thick due to the swelling of the conductive paint due to the surface tension in the corner portion of the processing groove 105 (A), or the thickness of the conductive paint becomes thin in the corner portion due to the electrostatic phenomenon (B).
  • a total or partial short circuit of the hot wire circuit may occur due to various causes in various parts. Partial damage to a part of the heating element may result in an overcurrent in the undamaged area, resulting in a fire due to local temperature rise.
  • the present invention has been made to solve the above problems, by improving the shape in which the heating element is applied to prevent damage to the heating element when a portion of the heating element is damaged, by the damage of the heating element It is an object of the present invention to provide a steering wheel having a heating element capable of preventing overheating and early detection of damage to prevent a fire or the like and a fail-safe device using the same.
  • the present invention prevents the deterioration of the heating performance even when a part of the heating element is damaged by the parallel pattern configuration of the heating element, prevents overheating due to damage to a part of the heating element, and easily finds the damage of the heating element. And it provides a steering wheel and a fail-safe device using the same that can prevent the fire of the vehicle in advance.
  • 1 and 2 is a schematic view showing a steering wheel having a conventional heating wire
  • 3 and 4 is a schematic view showing a conventional steering wheel difficult to select a hot wire
  • FIG. 5 is a schematic view illustrating a problem when the conductive paint is applied by a spray method
  • FIG. 6 is a diagram illustrating an arrangement of heating elements of a steering wheel
  • FIG. 7 is a view illustrating another heating element arrangement of the steering wheel
  • FIGS. 8 and 9 are views illustrating a heating element shape of a steering wheel in contrast to the present invention.
  • FIG. 10 is a view of the heating element shape of the steering wheel according to an embodiment of the present invention.
  • FIG. 11 is a conceptual diagram shown in a straight line
  • FIG. 15 is a view of the heating element shape of the steering wheel according to another embodiment of the present invention.
  • FIG. 16 is a view of the heating element shape of the steering wheel according to another embodiment of the present invention.
  • Steering wheel having a heating element for achieving the above object, in the steering wheel is electrically conductive heating element is applied to the rim surface, the heating element, both ends are each + power A first unit line connecting a terminal and a power supply terminal in series, and a second unit line spaced apart from the first unit line and connected at both ends in series between a + power supply terminal and a power supply terminal in series; And a plurality of unit heating elements including a connection line connecting the first and second unit lines in parallel.
  • connection lines may be provided, and the connection lines may be vertically connected to the first and second unit lines.
  • connection lines may be provided and cross the first sub connection line connecting the first and second unit lines in a diagonal direction and the first sub connection line to connect the first and second unit lines in a diagonal direction. It is preferable that the second sub connection line to be made.
  • connection line is formed in a circular shape, a plurality is provided, the first and second unit lines are preferably in contact with the circular.
  • the fail-safety device of the steering wheel having a heating element for achieving the above object, the steering wheel having the heating element; And a microcomputer for controlling the power applied to the heating element and sensing the resistance of the heating element, wherein the resistance of the heating element exceeds a predetermined range due to damage of the heating element.
  • the microcomputer cuts off the power applied to the heating element or transmits a warning signal to the driver.
  • a method of composing an electric circuit using a common heating wire includes a method of connecting in series and a method of configuring a plurality of heating wires in parallel.
  • a series configuration if any part of the heating wire is short-circuited, the entire circuit will be disconnected, and it will not serve as the heating wire. Therefore, in most cases, even in the case of some damage, the overall circuit is using a parallel circuit that can continuously generate electricity to generate heat.
  • Heat generation of the steering wheel is generated by the electric resistance of the heating wire, and considering that the voltage and current used in the vehicle cannot be greatly changed, the resistance value of the heating wire is an important factor in determining the heating.
  • the heating element employed in the present invention is composed of an electrically conductive conductive ink applied to the surface of the rim, the physical properties are very different from the heat wires generally used, so the strength, toughness, abrasion resistance, etc. are very low. It can be easily shorted by a shock.
  • a fire may be generated due to overheating or sparking, thereby greatly threatening safe driving of the vehicle.
  • the heating elements have been arranged by using the modified parallel structure as shown in FIG. 6, and as shown in FIG. 7, the calorific value and the rim of the steering wheel are shown.
  • the heating elements were arranged by adjusting the number or position of the heating elements.
  • FIG. 8 which schematically illustrates FIGS. 6 and 7, even when some heating elements are damaged in the circuit of the heating element, the change of resistance appears very small, and thus the voltage change of the vehicle, etc. Considering this, it is not easy to detect damage of the heating element except when very large damage has occurred.
  • a temperature sensor for sensing the temperature of the entire part of the steering wheel should be attached, or a device for detecting the resistance of the heating element will have to be mounted.
  • a temperature sensor it is practically difficult to mount a temperature sensor over the entire range of the steering wheel, and it is also unrealistic or economical to mount a resistance sensor for detecting damage to a heating element at a specific part.
  • the resistance of the heating element By measuring the current and voltage of the heating element through a microcomputer, etc., it is possible to check the resistance of the heating element as a whole at regular time intervals.
  • the voltage applied to the electronics varies from 6V to 24V depending on the standard or situation, and the voltage applied to the steering wheel operates in the range of about 9V to 16V.
  • the allowable current of the steering wheel is 10A, the resistance changes in the range of 1 ⁇ 2 ⁇ .
  • FIG. 10 illustrates the shape of a heating element according to an embodiment of the present invention
  • FIG. 11 illustrates a straight line view of FIG.
  • the steering wheel is coated with an electrically conductive heating element on the rim surface
  • the heating element 20 is the first unit line 11
  • the second unit line A plurality of unit heating elements 10 including 12 and connecting lines 13 are arranged in parallel.
  • Both ends of the first unit line 11 are connected in series between a positive power supply terminal (hereinafter referred to as "+ power supply terminal”) and a negative power supply terminal (hereinafter referred to as "-power supply terminal”). do.
  • the second unit line 12 is spaced apart from the first unit line 11 so that both ends are connected in series between a + power supply terminal and a-power supply terminal, respectively.
  • connection line 13 connects the first and second unit lines 11 and 12.
  • the connection line 13 is provided in plurality. Specifically, the connection line 13 crosses the first sub connection line 131 and the first sub connection line 131 connecting the first and second unit lines 11 and 12 in an oblique direction.
  • the second sub connection line 132 connects the first and second unit lines 11 and 12 in an oblique direction. That is, one connection line 13 is formed in a “x” shape, and a plurality of such connection lines 13 connect the first and second unit lines 11 and 12.
  • the unit heating element 10 is connected in series with a + power supply terminal and a-power supply terminal, and a plurality of unit heating elements 10 are connected in parallel to a heating element. It constitutes 20.
  • first and second unit lines 11 and 12 constituting the unit heating element 10 are connected in parallel, and the first and second unit lines 11 and 12 are connected to the connection line 13. Connected to form a unit heating element (10).
  • One unit heating element 10 is arranged in parallel.
  • a portion indicated by a dotted line means a portion in which a short circuit occurs due to damage to the heating element 20.
  • a portion of the heating element 20 is filled with black to indicate a heating element 20 through which current flows.
  • 13 and 14 the portion of the heating element 20 which is lightly colored with only the outline shows that the heating element 20 is damaged and no current flows.
  • FIG. 12 there is a short circuit at one location on the first unit line 11 of the unit heating element 10 disposed at the uppermost part of FIG. 12, and a short circuit occurs at one location of the second unit line 12.
  • a short circuit occurs in one place in the second unit line 12
  • a short circuit occurs in the first unit line 11 in one place. It became.
  • the unit heating element 10 disposed on the uppermost side has a current from the + power supply terminal to the-power supply terminal by the connection line 13 despite the short circuit of the first and second unit lines 11 and 12. Can flow.
  • the second unit heating element 10 and the third unit heating element 10 from the upper side may also flow current from the + power supply terminal to the-power supply terminal by the connection line 13.
  • the unit heating element 10 is partially damaged by the first and second unit lines 11 and 12 and the connection line 13 connecting the first and second unit lines 11 and 12 arranged in parallel. Even in this case, the heating element 20 can be generated by flowing a current without degrading the heating performance.
  • FIG. 13 shows a case where the second unit heating element 10 short circuits from the top to the bottom. In this case, since 25% of the change in resistance and the heating performance are generated, abnormality is easily detected.
  • FIG. 14 shows a case where the second and third unit heating elements 10 are short-circuited as a whole from the top side.
  • the current does not flow in the portion corresponding to half of the heating element 20, and the current is concentrated in the remaining portion, so that the resistance changes by 50%, and the heating element 20 that performs the heating function also decreases by 50%. .
  • the entire circuit is at risk of overheating.
  • the unit heating elements 10 are formed in parallel, it is easy to predict a change in resistance and heat generation performance when the entire unit heating element 10 is damaged and fails to function. Can be. That is, when all the unit heating elements 10 are connected to each other, it is not easy to detect the change in resistance, but the resistance change may be easily detected by the parallel connection between the unit heating elements 10.
  • FIG. 15 is a view of the shape of the heating element 20 of the steering wheel according to another embodiment of the present invention
  • Figure 16 is a view of the shape of the heating element 20 of the steering wheel according to another embodiment of the present invention to be.
  • 15 and 16 the same reference numerals are assigned to components that perform the same functions as the embodiment of FIG. 11, and the detailed description thereof will be omitted.
  • connection lines 13 are provided, and the connection lines 13 are vertically connected to the first and second unit lines 11 and 12.
  • connection line 13 is formed in a circular shape, and a plurality of connection lines 13 are provided, and the first and second unit lines 11 and 12 contact the circular shape.
  • the first unit line 11 and the second unit line 12 constituting the unit heating element 10 are connected in series to the + power supply terminal and the-power supply terminal, respectively.
  • the first and second unit lines 11 and 12 form a parallel connection relationship with each other.
  • the first and second unit lines 11 and 12 are connected to each other by a connection line 13. Since the unit heating elements 10 are connected in parallel, when damage occurs to a part of the first and second unit lines 11 and 12, the unit heating element 10 may operate without deterioration in heat generation performance. The change of the resistance at the time of total damage can be grasped easily as mentioned above.
  • a fail-safe device using a steering wheel having the above-described heating element.
  • the fail-safety device comprises a steering wheel with a heating element as described above and a microcomputer.
  • the microcomputer controls the power applied to the heating element 20 and senses the resistance of the heating element 20. If the microcomputer detects that the resistance of the heating element 20 exceeds a predetermined range due to damage of the heating element 20, the microcomputer cuts off the power applied to the heating element 20 or the driver. Send a warning signal to
  • the microcomputer used in the present invention may be a microcomputer separately provided for the apparatus, or may be integrated into another ECU in the form of a chip. Or it could be that only a program was added while utilizing an existing CPU and memory.
  • the microcomputer can also be mounted directly on the steering wheel, but can also be located away from other parts of the vehicle.
  • the supply of power to the steering wheel is achieved by connecting a heating element 20 between the + power supply terminal and the-power supply terminal located on the wheel. Since a plurality of unit heating elements 10 arranged in series are arranged in parallel between a + power supply terminal and a-power supply terminal, a resistance change of the unit heating element 10 can be easily detected by the microcomputer. Can be.
  • the microcomputer periodically calculates the resistance of the heating element 20 so that, when the resistance of the heating element 20 exceeds a predetermined value, the power supply is cut off, a warning signal is sent to the driver, or another signal is received through the microcomputer. Allow for safeguards.
  • connection line 13 connecting the first and second unit lines 11 and 12 is not limited and may be applied in various forms.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)
  • Resistance Heating (AREA)

Abstract

La présente invention porte sur un volant de direction ayant un élément chauffant et sur un dispositif à sécurité intégrée l'utilisant. Le volant de direction ayant un élément chauffant selon la présente invention a un rebord, et la surface du rebord est revêtue par un élément chauffant électriquement conducteur. L'élément chauffant comprend : une première ligne unitaire, dont chacune des deux extrémités connecte une borne d'application d'alimentation positive et une borne d'application d'alimentation négative ensemble en série ; une seconde ligne unitaire espacée vis-à-vis de la première ligne unitaire, dont chacune des deux extrémités connecte une borne d'application d'alimentation positive et une borne d'application d'alimentation négative ensemble en série ; et une pluralité d'éléments chauffants unitaires comprenant une ligne de connexion pour connecter les première et seconde lignes unitaires, les éléments chauffants unitaires étant disposés en parallèle. Le volant de direction ayant la configuration décrite ci-dessus peut produire l'effet de prévention d'une dégradation des performances de chauffage même quand une partie de l'élément chauffant est court-circuitée.
PCT/KR2013/002876 2012-04-06 2013-04-05 Volant de direction ayant un élément chauffant, et dispositif à sécurité intégrée l'utilisant WO2013151385A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201380028563.5A CN104487314B (zh) 2012-04-06 2013-04-05 具有加热元件的方向盘及使用其的故障安全装置
JP2015504504A JP6031590B2 (ja) 2012-04-06 2013-04-05 加熱要素を有するステアリングホイール、及びそれを利用したフェイルセーフ装置
US14/507,527 US9972996B2 (en) 2012-04-06 2014-10-06 Steering wheel having a heating element, and fail-safety device using the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20120036280 2012-04-06
KR10-2012-0036280 2012-04-06
KR10-2013-0036995 2013-04-04
KR20130036995A KR101488512B1 (ko) 2012-04-06 2013-04-04 가열요소를 갖는 스티어링휠 및 이를 이용한 페일-세이프티 장치

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/507,527 Continuation US9972996B2 (en) 2012-04-06 2014-10-06 Steering wheel having a heating element, and fail-safety device using the same

Publications (1)

Publication Number Publication Date
WO2013151385A1 true WO2013151385A1 (fr) 2013-10-10

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PCT/KR2013/002876 WO2013151385A1 (fr) 2012-04-06 2013-04-05 Volant de direction ayant un élément chauffant, et dispositif à sécurité intégrée l'utilisant

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WO (1) WO2013151385A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200331802Y1 (ko) * 2003-07-25 2003-10-30 주식회사 화진테크 스티어링 휠
KR100816405B1 (ko) * 2007-02-05 2008-03-25 주식회사 만도 조향장치에서 전자제어장치의 과열방지를 위한 경고등구동회로
JP2010215140A (ja) * 2009-03-18 2010-09-30 Panasonic Corp ステアリングホイール
KR101031630B1 (ko) * 2010-10-20 2011-04-27 주식회사 화진 가열요소를 가지는 스티어링휠
JP2011121477A (ja) * 2009-12-10 2011-06-23 Kurabe Industrial Co Ltd ステアリングホイール用ヒータ装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200331802Y1 (ko) * 2003-07-25 2003-10-30 주식회사 화진테크 스티어링 휠
KR100816405B1 (ko) * 2007-02-05 2008-03-25 주식회사 만도 조향장치에서 전자제어장치의 과열방지를 위한 경고등구동회로
JP2010215140A (ja) * 2009-03-18 2010-09-30 Panasonic Corp ステアリングホイール
JP2011121477A (ja) * 2009-12-10 2011-06-23 Kurabe Industrial Co Ltd ステアリングホイール用ヒータ装置
KR101031630B1 (ko) * 2010-10-20 2011-04-27 주식회사 화진 가열요소를 가지는 스티어링휠

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