JP2011160907A - Heater mat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-board heater mat that facilitates attachment and detachment as well as positioning of a non-contact feeding part in attachment. <P>SOLUTION: The on-board heater mat 10 includes: a non-contact electric power-receiving coil 12 which receives electric power from a non-contact feeding coil 21 installed on an automobile; and a heating wire 13 which exchanges the electric power received in the non-contact electric power-receiving coil 12 to heat to heat the mat. A shape of the on-board heater mat 10 is made to correspond to a shape of a floor raised part of the automobile, and thus the positioning upon mounting of the mat is facilitated. Additionally, a prevention of displacement allows reduction of feeding efficiency in non-contact feeding to be prevented. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a heater mat for a vehicle.

  As a vehicle heating device, there is a car seat heater described in Patent Document 1.

  FIG. 8 is a configuration diagram of this car seat heater. As shown in FIG. 8, the car seat heater according to the present invention is attached to a car seat and receives power from a cigarette lighter outlet to heat the casing. As a result, a simple portable warm seat that is compact and inexpensive to manufacture, has a good feeling of use, is easy to carry and can be used easily, and has a low running cost is provided.

Japanese Patent Laid-Open No. 11-128025 Japanese Patent Laid-Open No. 9-229379

  Vehicle mats are frequently soiled by outdoor dirt and mud because they are usually used by users with shoes on. Since it is necessary for the user to clean each time, it is desirable that removal and installation be easy.

  However, even if the heating invention of Patent Document 1 is diverted to a vehicle heater mat, the power source is connected to a cigarette lighter outlet, so that there remains a problem that it takes time to remove the wiring of the vehicle heater mat.

  As a means for eliminating the wiring of the power connection portion, a method using a non-contact power feeding method is generally known in Patent Document 2, but the vehicle floor on which the vehicle mat is installed has an uneven shape. In many cases, it is difficult to divert the form of cited document 2. Further, in the non-contact power feeding method, positioning between the power feeding unit and the power receiving unit greatly affects power feeding efficiency, and thus a highly accurate positioning form is required.

  The present invention solves the above-mentioned conventional problems, and provides a vehicle heater mat that can receive power by a non-contact power feeding method. It is another object of the present invention to provide a vehicle heater mat that can be easily attached and detached, and that can easily position and hold a non-contact power receiving unit at the time of attachment.

  In order to solve the above-mentioned problems, the vehicle heater mat according to the present invention is characterized in that the mat shape is associated with the uneven shape of the floor raised portion of the vehicle.

  Accordingly, the user can install the mat at a predetermined position without positioning.

The vehicle heater mat according to the present invention can easily position the mat, and can efficiently transfer power to the non-contact power feeding unit.

Schematic of the vehicle-mounted heater mat in Embodiment 1 of the present invention Schematic of in-vehicle heater mat shape in Embodiment 1 of the present invention Schematic of in-vehicle heater mat shape associated with the chair movement rail in Embodiment 1 of the present invention Schematic of non-contact power receiving coil sharing method in Embodiment 2 of the present invention Sectional drawing of the vehicle-mounted heater mat in Embodiment 2 of this invention Arrangement diagram of deviation preventing magnet in embodiment 2 of the present invention Schematic of the power supply control system in Embodiment 3 of this invention Schematic diagram of conventional car seat heater

  According to a first aspect of the present invention, there is provided a non-contact power receiving unit that receives power from a non-contact power feeding unit provided in an automobile, and a heating unit that converts the power received by the non-contact power receiving unit into heat and heats the mat. In the vehicle-mounted heater mat provided for the vehicle, the shape of the vehicle-mounted heater mat is matched to the shape of the raised portion of the floor of the vehicle, so that positioning when the mat is mounted is easy and the vehicle-mounted heater is easy to attach and detach. A mat can be realized. In addition, it is possible to prevent a reduction in the power supply efficiency of the contactless power supply due to the mat displacement, and to realize an efficient contactless power supply.

  According to the second aspect of the present invention, the mat positioning accuracy can be improved by associating a part of the shape of the in-vehicle heater mat with the distance between the seat position adjusting rails of the automobile.

  In the third aspect of the present invention, the non-contact power receiving unit is arranged on a part of the outer periphery of the mat, so that the heating wire can be easily routed into the mat.

  According to the fourth aspect of the present invention, when the coefficient of friction on the back surface of the mat is 0.8 or more, the shift of the mat in use can be further suppressed.

  According to the fifth aspect of the present invention, the magnet placed on the back surface of the mat can move and hold the mat placed in a certain range to a predetermined position by magnetic force.

  A sixth invention includes a deviation detecting unit that detects a deviation amount between the non-contact power feeding unit and the non-contact power receiving unit, and a power source control unit that controls a power source, and when the deviation amount exceeds a predetermined value, When the control unit stops power supply from the automobile, it is possible to prevent useless power consumption of the automobile.

  The seventh invention comprises a non-contact power receiving unit that receives power from a non-contact power feeding unit provided in a vehicle, and a heating unit that converts the power received by the non-contact power receiving unit into heat and heats the mat. In the vehicle heater mat provided, the heater mat for the vehicle can be easily positioned and mounted / removed by associating the shape of the heater mat with the shape of the raised portion of the floor surface of the vehicle. Further, it is possible to prevent a reduction in the power supply efficiency of the non-contact power supply unit due to the mat displacement, and to realize an efficient non-contact power supply.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking an in-vehicle heater mat as an example. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The configuration of the on-vehicle heater mat 10 of the present invention will be described with reference to FIG.

  In FIG. 1, the vehicle-mounted heater mat 10 includes a non-woven fabric sheet 11, a spiral non-contact power receiving coil 12 disposed on the non-woven fabric sheet 11, and a heating wire 13 wired inside the sheet. On the other hand, the automobile includes a non-contact power feeding coil 21, a driving battery 22 for the automobile, and an inverter 23 that converts electric power from the driving battery 22.

  In the following, embodiments of the in-vehicle heater mat and the automobile will be described.

  The inverter 23 that converts the electric power of the driving battery 22 of the automobile passes a current through the non-contact power supply coil 21, and the non-contact power supply coil 21 generates a magnetic flux around the coil. Electromagnetic induction occurs due to this magnetic flux change, and an electromotive force is generated in the non-contact power receiving coil 12. The sheet-like ferrite 24 is integrally bonded to the back side of the spiral non-contact power supply coil 21 so that the magnetic flux is concentrated inside the ferrite having a high magnetic permeability and does not reach the automobile floor 20 below it. The exterior including the automobile floor 20 is usually made of iron, and when exposed to a magnetic field, eddy currents are generated and induction overheating occurs. However, it can be suppressed by installing ferrite 24. That is, the vehicle-mounted heater mat 10 that does not waste power can be provided. By this non-contact type power supply, the user does not need to perform complicated work such as wiring of the connector, and the in-vehicle heater mat 10 can be installed very easily.

  The electric power received from the non-contact power receiving coil 12 is converted into heat by the heating wire 13 and the surface of the in-vehicle heater mat 10 is heated. In the present embodiment, the heating is performed using the heating wire 13, but the heating may be performed using a planar PTC heater instead of the heating wire 13. Moreover, it is desirable to arrange the heat insulating material 14 on the back surface side of the in-vehicle heater mat 10 so that the radiated heat is efficiently transmitted to the user's foot.

  Further, the in-vehicle heater mat 10 may be configured with a waterproof member so that it can be washed, and since the mat does not have an electric wire connected to the outside, the mat is made of a waterproof member such as a resin. It may take the form of surroundings. As a result, dirt, sand, dust, and the like adhering to the shoes can be easily washed away, which increases convenience in cleaning and maintenance.

  Next, the installation method of said vehicle-mounted heater mat 10 is demonstrated using FIG.

  The in-vehicle heater mat 10 has a shape corresponding to the shape of the floor raised portion 20a of the automobile as shown in FIG. As a result, the user can superimpose the non-contact power supply coil 21 and the non-contact power reception coil 12 simply by placing the in-vehicle heater mat 10 in correspondence with the raised floor portion 20a. Can be installed. In addition, as shown in FIG. 2, if the dimensions of the in-vehicle heater mat 10 are adjusted so that the floor raised portion 20a and the end of the in-vehicle heater mat are in contact with each other at the top, bottom, left, and right ends of the in-vehicle heater mat 10. The floor raised portion 20a plays a role of suppressing the movement of the mat in the horizontal direction. Thereby, since the mat can be prevented from being displaced, a decrease in the non-contact power feeding efficiency can be suppressed, and an efficient power feeding efficiency can be realized.

  Moreover, since it is possible to suppress the displacement of the mat without using a fixing tool, the in-vehicle heater mat 10 that can be easily attached and detached can be realized. Furthermore, since the vehicle-mounted heater mat 10 having no protrusions or the like on the surface can be realized, even if the user uses the vehicle-mounted heater mat 10 barefoot, it can be safely used. In FIG. 2, the non-contact power receiving coil 12 is arranged on a part of the outer periphery of the in-vehicle heater mat 10. Thereby, wiring of a heating wire becomes easy. Furthermore, it is possible to prevent the non-contact power receiving coil 12 from being deformed by an external force such as being stepped on with a foot and lowering the power transfer efficiency.

  FIG. 3 shows an in-vehicle heater mat 10 having a shape corresponding to a chair moving rail 25 under the seat of an automobile.

  Normally, the floor of an automobile on which a mat is installed is covered with a floor carpet. If an on-vehicle heater mat is installed on the floor, the mat may be displaced from a predetermined position due to deformation of the floor carpet, or between the floor carpet. There is a possibility that a space may be generated and normal positioning cannot be performed. However, in the embodiment in which the vehicle-mounted heater mat is inserted between the rails as in the present embodiment, the rails are fixed to the vehicle body of the automobile, so that accurate positioning can be performed. Note that the association between the in-vehicle heater mat and the rail is not limited to the above form, and the mat may be disposed outside the rail, or the rail may be surrounded by the mat.

(Embodiment 2)
A configuration in which the protrusion shape 10a is provided on the back surface of the in-vehicle heater mat 10 will be described with reference to FIG. This configuration makes it difficult for slippage to occur between the vehicle and the floor surface, and it is possible to suppress the occurrence of positioning even when the user places his / her foot. Note that the same effect can be obtained not only by the protrusion shape 10a but also by using a member having a high friction coefficient such as rubber. In general, when a member having a friction coefficient of the mat back surface of 0.8 or more with respect to the automobile floor surface 20 is selected, it is possible to further suppress the deviation from the external force.

  FIG. 5 shows a form in which a mat stationary magnet 15 is arranged on the back surface of the mat. If the in-vehicle magnet 26 having the same shape is arranged on the automobile floor 2, the in-vehicle heater mat 10 is moved by the magnetic force between the magnets even if the in-vehicle heater mat 10 is slightly displaced, and the in-vehicle magnet 10 is mounted at a predetermined position. The heater mat 10 can be held and stopped. At this time, if it is arranged in the vicinity of the non-contact power feeding coil 21 and the non-contact power receiving coil 12, the amount of deviation between the two can be minimized, so that efficient power transfer can be realized. Further, the magnet arrangement method is not limited to the present embodiment, and may be connected at a plurality of points. In addition, the form which suppresses the shift | offset | difference of a mat | matte using the repulsive force of a magnet may be taken.

  In addition, if the in-vehicle heater mat 10 is equipped with a mechanism that shows green when a magnetic force of a certain value or more is working and shows red when the magnetic force is less than a certain value, the state when the mat is displaced is displayed. Since it can be easily shown to the user, the convenience of the in-vehicle heater mat 10 is increased.

(Embodiment 3)
FIG. 6 shows the in-vehicle heater mat 10 provided with the deviation detection unit 31. The same reference numerals as those of the first embodiment are used for the same reference numerals as those of the first embodiment.

  As shown in FIG. 7, the deviation detection unit 31 includes a mat magnet 32, a timer 33, a timer initialization device 34, a power supply control unit 35, and a wireless transmission unit 36. As shown in FIG. 7, the mat magnet 32 of the deviation detection unit 31 includes a mechanism that maintains an energized state by attracting with the in-vehicle magnet 26 provided in the automobile. When the in-vehicle heat mat 10 is displaced and the magnetic force does not work, the power supply control unit 35 causes the timer initialization device 34 to initialize the timer value and then activates the timer 33. Then, when the set value of the activated timer 33 exceeds a predetermined value, the power supply control unit 35 uses the wireless transmission unit 36 to transmit a signal to the wireless reception unit of the automobile, and controls the non-contact power supply coil 21 to be turned off. . As a result, useless power consumption of the automobile can be prevented when the mat is not properly installed.

In this embodiment, the timer 33, the timer initialization device 34, and the power supply control unit 35 are included in the deviation detection unit 31, but may be arranged outside the deviation detection unit 31 or an automobile. It may take the form mounted on Moreover, if it takes the form mounted in a motor vehicle, it will also become possible to turn off the power of the non-contact power feeding coil 21 by wire without configuring the wireless transmission unit 36.

  In addition, the deviation detection unit 31 may be configured with a waterproof member as in the in-vehicle heater mat 10 described in the first embodiment, or may be configured to wrap the periphery of the mat with a waterproof member. . Thereby, the effect that the mat can be washed with water is not lost.

  The deviation detector 31 is not limited to the present embodiment, and the inverter 23 itself may monitor the current flowing through the non-contact power feeding coil 21 with a current detector built in the inverter 23. At that time, if the non-contact power receiving coil 12 is shifted or disconnected, it is detected that electric power is not transmitted, and as a result, the current flowing through the non-contact power feeding coil 21 is reduced, and the power of the non-contact power feeding coil 21 is turned off. The same effect is obtained.

  As described above, according to the present invention, it is possible to realize a vehicle-mounted heater mat that can be easily positioned when the mat is mounted and can be easily attached and detached. Moreover, it can be used not only for automobiles but also for floor heater mats in other vehicles such as ships and airplanes.

DESCRIPTION OF SYMBOLS 10 In-vehicle heater mat 10a Protrusion shape 11 Nonwoven fabric sheet 12 Non-contact power receiving coil 13 Heating wire 14 Heat insulating material 15 Mat stationary magnet 20 Automotive floor surface 20a Floor surface raised portion 21 Non-contact power supply coil 22 Drive battery 23 Inverter 24 Ferrite 25 Rail for chair movement 26 On-board magnet 31 Deviation detection unit 32 Mat magnet 33 Timer 34 Timer initialization device 35 Power supply control unit 36 Wireless transmission unit

Claims (7)

A non-contact power receiving unit that receives power from the non-contact power feeding unit provided in the automobile; and
A heating unit that converts the electric power received by the non-contact power receiving unit into heat and heats the mat; and
A vehicle-mounted heater mat having a shape corresponding to the shape of the floor raised portion of the automobile. The in-vehicle heater mat according to claim 1, wherein a part of the shape of the in-vehicle heater mat is associated with a distance between the seat position adjusting rails of the automobile. The in-vehicle heater mat according to claim 1, wherein the non-contact power receiving unit is arranged on a part of the outer periphery of the mat. The in-vehicle heater mat according to claim 1 or 2, wherein a friction coefficient of the back surface of the mat is 0.8 or more. The in-vehicle heater mat according to claim 1 or 2, wherein a magnet is disposed on the back surface of the mat. A shift detection unit that detects a shift amount between the non-contact power supply unit and the non-contact power reception unit, and a power control unit that controls a power source,
The in-vehicle heater mat according to claim 1 or 2, wherein when the deviation amount exceeds a predetermined value, the power supply control unit performs control to stop power supply from the automobile. A non-contact power receiving unit that receives power from a non-contact power feeding unit provided in the vehicle;
A heating unit that converts the electric power received by the non-contact power receiving unit into heat and heats the mat; and
A vehicle heater mat having a shape corresponding to the shape of the floor raised portion of the vehicle.

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