JPWO2012049827A1 - Seat heating system - Google Patents

Abstract

In a seat heating device, a seat heater body in which a heater wire that can be bent is provided on a sheet-like flexible base material, and an extension part in which at least a part of the base material is extended to provide a heater wire And a relay part in which the seat heater body and the extension part are connected and the heater wire is provided, the seat heater body is provided in the seat of the vehicle, and the extension part is the rear end on the seating surface side of the seat To the bottom of the seat, or at least one of the back side of the back of the seat.

Description

  The present invention relates to a seat heating device disposed in a seat for foot heating of a passenger sitting in a front seat and / or a rear seat of a vehicle.

  Conventionally, this type of seat heating apparatus supplies engine cooling water of a vehicle to a radiation panel installed on the back of the front seat (see, for example, Patent Document 1).

  FIG. 6 is a diagram showing a conventional seat heating device described in Patent Document 1. As shown in FIG. As shown in FIG. 6, from the upper radiation panel 3 installed at the lower back position of the seat back 2 of the front seat 1 and the lower radiation panel 5 installed at the rear position of the seat cushion 4 of the front seat 1 It is configured. The upper radiation panel 3 irradiates the lower leg of the seated occupant of the rear seat, and the lower radiation panel 5 radiates heat of the occupant's foot. The upper radiation panel 3 and the lower radiation panel 5 are provided with hot water piping 6 for circulating engine cooling water.

JP 2008-254665 A

  However, the conventional configuration has a problem that the arrangement of the hot water pipe is troublesome, and furthermore, water leakage occurs from the hot water pipe due to vibration of the vehicle body or deterioration over time.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a seat heating device that is easy to dispose with a simple configuration and that does not leak water.

  In order to solve the above-described conventional problems, a seat heating apparatus according to the present invention includes a seat heater body in which a bendable heater wire is disposed on a sheet-like flexible base material, and at least one of the base materials. An extension part in which the heater wire is arranged by extending a part, and a relay part in which the seat heater body and the extension part are connected and the heater wire is arranged, the seat heater body being a vehicle The extending portion is disposed in at least one of a portion from the seat surface rear end of the seat to the seat bottom surface, or a backrest back side portion of the seat. According to such a configuration, heating of the front seat occupant by the seat heater main body and heating of the foot portion and lower leg portion of the rear seat occupant by the heater wire heat generation of the extension portion can be performed simultaneously. And, since the rear seat occupant can be heated by simply disposing the extending portion formed integrally with the seat heater main body on the seat, the arrangement is less time-consuming than the conventional hot water pipe. In addition, since heating is performed using a heater wire, there is no fear of water leakage and the reliability of the apparatus is improved.

  In addition, if the relay part is arranged at the part where the seat surface and the backrest are in contact with the back of the seat, the relay part is slid by reclining and unnecessary tension is applied to the heater wire, but there is a fear of disconnection, In the present invention, since the heater wire is meandered at the relay portion, even if unnecessary tension is applied, the tension is dispersed and there is no fear of disconnection.

  In addition, since the seating surface side relay part and the backrest side relay part are installed so as not to overlap, the heater wires do not rub against each other due to reclining, so that unnecessary tension is not applied to the heater wires, and disconnection There is no worry.

  And a control unit that individually controls energization of the heater wires disposed in the seat heater main body and the extension part, and an occupant detection unit that detects the presence or absence of an occupant in the seat, the control unit comprising: It controls the energization to the heater wire based on the output signal of the occupant detection means, and does not energize the heater wire even when no occupant is present, thereby saving energy.

  Further, in the seat provided with the vehicle heating device as described above, an extending portion is provided by providing an inclined portion for inserting shoes on at least a part from the seat surface rear end portion to the bottom surface. This makes it easier to bring the shoe into contact with the inclined portion and improves the heating effect of the foot.

  The seat heating device of the present invention can be heated by the feet of the occupants of the rear seats simply by disposing the extension part formed integrally with the seat heater body on the seat, so that it is disposed in comparison with the conventional hot water pipe. Does not take much time. In addition, since heating is performed using a heater wire, there is no fear of water leakage and the reliability of the apparatus is improved.

  In addition, the relay section is provided with meandering heater wires, and further, the relay sections are disposed so as not to overlap each other, so that the seat section and the backrest section slide at the rear end of the seat section during reclining. Even if unnecessary tension is applied, the tension is eased by the meandering heater wire of the relay section, so there is no fear of disconnection.

These aspects and features of the invention will become apparent from the following description, taken in conjunction with the preferred embodiments with reference to the accompanying drawings, in which:
Sectional drawing of the seat which arranged the heating device for seats in Embodiment 1 of the present invention The top view which shows the structure of the seat surface side seat-heater main body, extension part, and relay part of the heating apparatus for seats Plan view showing the structure of the seat heater body, extension part, and relay part on the backrest side of the seat heating system Circuit diagram of heater wire for seat heating system Schematic diagram showing a seat in Embodiment 2 of the present invention Sectional view of a seat provided with a conventional seat heating device

  According to a first aspect of the present invention, there is provided a sheet heater body in which a bendable heater wire is disposed on a sheet-like flexible base material, and an extension in which at least a part of the base material is extended to dispose the heater wire. A connecting portion connecting the extension portion, the seat heater main body and the extension portion, and the heater wire being arranged, the seat heater main body being provided in a vehicle seat, and the extension portion being It is disposed at least one of a part from the seat surface rear end of the seat to the seat bottom surface, or a back back side portion of the seat. According to such a configuration, heating of the front seat occupant by the seat heater main body and heating of the foot portion and lower leg portion of the rear seat occupant by the heater wire heat generation of the extension portion can be performed simultaneously. And, since the rear seat occupant can be heated by simply disposing the extending portion formed integrally with the seat heater main body on the seat, the arrangement is less time-consuming than the conventional hot water pipe. In addition, since heating is performed using a heater wire, there is no fear of water leakage and the reliability of the apparatus is improved.

  In the second aspect of the invention, if the relay portion is disposed at a position where the seat surface and the backrest are in contact with each other behind the seat, the relay portion is slid by reclining and unnecessary tension is applied to the heater wire. However, in the present invention, since the heater wire meanders at the relay portion, even if unnecessary tension is applied, the tension is dispersed and there is no fear of disconnection.

  In the third aspect of the invention, the seat-side relay portion and the backrest-side relay portion are installed so as not to overlap each other, so that the heater wires are rubbed against each other by reclining, and unnecessary tension is applied to the heater wires. There is no worry about disconnection.

  4th invention has a control means to control individually energization to a heater wire arranged in each of a seat heater main part and an extension part, and an occupant detection means to detect the presence or absence of an occupant in a seat, The control means controls the energization to the heater wire based on the output signal of the occupant detection means, and does not energize the heater line even when no occupant is present, thereby saving energy.

  5th invention WHEREIN: In the seat by which any one heating apparatus for seats of 1-4 was arrange | positioned, the inclination part for inserting shoes into at least one part from a seat surface side rear end part to a bottom face is provided. It is provided and the extending portion is disposed, and the shoe is easily brought into contact with the inclined portion, and the heating effect of the foot portion is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a cross-sectional view of a seat provided with a seat heating device according to a first embodiment of the present invention.

  In FIG. 1, the seat heating device according to the first embodiment is disposed in the front seat 7 and warms the trunk of the passenger seated in the front seat 7 and the feet of the passenger seated in the rear seat 8. The seat heating device includes a seat heater main body 10 disposed on the seat surface portion 9 of the front seat 7, an extension portion 11 disposed at a portion from the seat surface rear end to the seat bottom surface, and the seat heater main body 10. The relay part 12 that connects the output part 11, the seat heater main body 14 that is disposed on the backrest part 13, the extension part 15 that is disposed on the back side part of the backrest part, and the relay that connects the seat heater main body 14 and the extension part 15. Part 16, an extension part 17 disposed at a part from the front end of the seat surface part 9 to the front side wall surface of the seat surface part 9, and a relay part 18 that connects the seat heater body 10 and the extension part 17.

  FIG. 2 is a plan view showing the structure of the seat heater main body 10, the extension part 11, and the relay part 12 on the seating surface side of the seat heating apparatus of the first embodiment, and FIG. 3 is a seat on the back side of the seat heating apparatus. 3 is a plan view showing the structure of a heater body 14, an extension part 15, and a relay part 16. FIG.

  In FIG. 2, the seat surface side heater unit 19 is formed by disposing a flexible heater wire 21 on a sheet-like flexible base material 20, and the heater wire 21 extends from the seat heater body 10. Wiring is performed in a single stroke while forming the areas of the part 11, the relay part 12, the extension part 17, and the relay part 18. Wiring of the heater wire 21 to the base material 20 is performed by an automatic sewing machine. As described above, the seat heater body 10, the extending portions 11 and 17, and the relay portions 12 and 18 are formed in an integrated configuration, and are disposed on the back surface side of the surface cover of the seat surface portion 9.

  Here, the relay portion 12 is disposed at a portion where the seat surface portion 9 and the backrest portion 13 are in contact with each other, and the heater in the relay portion 12 is prevented from applying unnecessary tension such as sliding due to reclining to the heater wire 21. The line 21 is meandered. In addition, the relay portion 18 is bent near the front end of the seat surface portion 9 and is slid or applied with a large load by the movement of the occupant. Therefore, like the relay portion 12, the heater wire 21 is meandered. ing.

  One end of the heater wire 21 is connected to the power source ground of the vehicle via a lead wire and a connector, and the other end is connected to one end of the thermostat 22 and is connected to the backrest side heater wire via the lead wire and the connector. . The other end of the thermostat 22 is connected to the positive side of the vehicle power supply via a lead wire and a connector. The vicinity of the thermostat 22 and the connecting portion between the heater wire 21 and the lead wire are covered with a protective sheet 24. The thermostat 22 is disposed adjacent to a temperature adjustment heater 23 formed by the heater wire 21 and performs an on / off operation upon receiving heat from the temperature adjustment heater 23.

  In FIG. 3, the backrest side heater unit 25 is formed by arranging a bendable heater wire 21 on a base material 20, and the heater wire 21 includes a seat heater main body 14, an extension portion 15, and a relay portion 16. It is wired in a single stroke while forming an area. As described above, the seat heater main body 14, the extending portion 15, and the relay portion 16 are integrally formed and are disposed on the back side of the surface cover of the backrest portion 13.

  Here, the relay portion 16 is disposed at a portion where the seat surface portion 9 and the backrest portion 13 are in contact with each other, and the heater at the relay portion 16 is prevented from applying unnecessary tension such as sliding due to reclining to the heater wire 21. The line 21 is meandered.

  One end of the heater wire 21 is connected to the vehicle power supply ground via a lead wire and a connector, and the other end is connected to the thermostat 22 of the seat surface side heater unit 19 and the seat surface side heater wire via a lead wire and a connector. Yes. A connection portion between the heater wire 21 and the lead wire is covered with a protective sheet 26.

  The relay portions 12 and 16 are disposed substantially opposite each other at the rear end of the seat surface where the seat surface portion 9 and the backrest portion 13 are in contact with each other, so if they overlap, the heater wires rub against each other during reclining. Since unnecessary tension is applied to the heater wire 21, as shown in FIGS. 2 and 3, the relay portions 12, 16 are installed in a shifted position so as not to overlap each other. Specifically, in the seat surface side heater unit 19 in FIG. 2, the relay portion 12 is disposed near the left end in the figure, whereas in the backrest side heater unit 25 in FIG. 3, the relay portion 16 is illustrated. Located near the center.

  Further, the wiring pattern of the temperature adjusting heater 23 is optimally obtained by experimentally determining the relationship between the heating performance and the wiring density by the seat surface side heater unit 19 and the backrest side heater unit 25 by turning the thermostat 22 on and off, for example. A wiring pattern is set.

  FIG. 4 is a circuit diagram of the heater wire of the seat heating device of the present embodiment. From the figure, the seat surface side heater unit 19 and the backrest side heater unit 25 are connected in parallel with the vehicle power supply via the thermostat 22. In the present embodiment, the thermostat 22 and the temperature adjustment heater 23 are disposed in the seat surface side heater unit 19, but the thermostat 22 and the temperature adjustment heater 23 may be disposed on the backrest side heater unit 25 side.

  With the above configuration, when energization of the heater wire 21 is started, the heater wires 21 of the seat surface side heater unit 19 and the backrest side heater unit 25 generate heat to warm the seat, and at the same time, the temperature adjusting heater 23 warms the thermostat 22 and the thermostat. On / off control 22 is performed. The trunks of the front seat occupants are warmed by the seat heater bodies 10 and 14, the feet are warmed via the shoes of the rear seat occupants by the heat generated by the heater wires of the extension portions 11, and the heaters of the extension portions 15 The lower leg of the rear seat occupant is warmed by the heat generated by the wire. The heat from the heater wire of the extension 15 warms the back of the front seat occupant to the calf. In this way, heating of the front seat occupant by the seat heater body and heating of the foot and lower leg portions of the rear seat occupant by the heater wire heat generation at the extension portion can be performed simultaneously.

  Further, since the seat-side heater unit 19 and the back-side heater unit 25 can be heated under the front cover of the front seat 7, the rear seat occupant can be heated by feet. Compared to the configuration arranged inside, it takes less time to arrange the apparatus. In addition, since heating is performed using a heater wire, there is no fear of water leakage and the reliability of the apparatus is improved.

  Further, since the heater wire 21 is meandered to the relay portions 12 and 16, even if unnecessary tension is applied by reclining, the tension is dispersed and there is no fear of disconnection. Further, since the heater wire 21 meanders in the relay portion 18, even if a large load is applied to the vicinity of the front end of the seat surface portion 9 by the occupant's operation, the tension is dispersed and there is no fear of disconnection.

  Moreover, since the relay parts 12 and 16 are installed so as not to overlap each other, the heater wires are rubbed with each other by reclining so that unnecessary tension is not applied to the heater wires, and there is a fear of disconnection. Absent.

  When the above embodiment is applied to an electric vehicle and the direct heating by the seat heater body and the extension part is combined with the warm air heating by the electric heater or the heat pump heating, the room temperature is lowered as compared with the case of the hot air heating alone. Thus, the same level of heating feeling can be obtained and the load of hot air heating can be reduced, so that the power consumption of the battery can be saved and the reduction in travel distance can be improved.

  In this case, in the above-described embodiment, the seat heater body 19 and the backrest heater unit 25 have the seat heater main body and the heater wire of the extension portion arranged in series, and the seat heater main body and the extension portion are simultaneously provided. Since heat is generated, heating is performed even if either the front seat or the rear seat is absent. The electric power consumed at this time is about several tens of watts per seat, which is less than the electric power consumption (several kW) at the time of warm air heating by an electric heater, and it is considered that there is no significant influence on the travel distance. If you want to save even more travel distance, for example, arrange the seat heater body and the heater wire of the extension part independently, and provide individual SW (switch) to switch the energization to each heater wire individually, It is only necessary to energize only necessary parts. Further, a control means for detecting the presence or absence of an occupant in the seat by an occupant detection means such as a seat belt wearing SW or a seating SW and controlling energization to the heater wire only for the seat where the occupant is detected. It is good also as the provided structure. In such a configuration, since power is not supplied to the absent seat, energy saving can be achieved.

(Embodiment 2)
FIG. 5 shows a seat according to Embodiment 2 of the present invention. The difference between the seat of the present embodiment and the first embodiment is that, as shown in FIG. 5, shoes are inserted from the rear seat side into at least a part from the rear end portion on the seat surface side to the bottom surface. The inclined portion 27 is provided and the extending portion 11 is provided.

  With this configuration, the contact area between the inclined portion 27 and the shoe of the occupant on the rear seat can be increased, and the heating effect of the foot portion is improved. In particular, as shown in FIG. 5, when the electric vehicle has a configuration in which the battery 28 is stored under the floor of the seat, the floor of the vehicle interior is raised due to the storage of the battery 28, and the seat Since the space between the bottom surface and the floor surface is reduced, the rear seat occupant can contact only the extension portion 11 and the toe of the shoe, and cannot efficiently warm the shoe.

  Therefore, in the present embodiment, the extending portion 11 is provided by providing the inclined portion 27 for inserting shoes from the rear seat side at least at a part from the rear end portion on the seat surface side to the bottom surface. Thereby, since shoes can be contacted along the inclination part 27, the contact area of the extension part 11 and shoes expands, and the heating effect of a leg part improves.

  In the above embodiment, the configuration in which the seat heating device of the present invention is arranged in the front seat when the number of seats is two rows has been disclosed. However, in the case of a vehicle having three or more rows, the present invention Seat heating devices may be arranged in the second and subsequent rows, and foot heating for passengers in the third and subsequent rows is possible.

  It is to be noted that, by appropriately combining arbitrary embodiments of the various embodiments described above, the effects possessed by them can be produced.

  While the invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

  Japanese patent application No. 10 filed on Oct. 12, 2010. The disclosure of the specification, drawings, and claims of 2010-229434 is hereby incorporated by reference in its entirety.

  As described above, the seat heating device according to the present invention enables efficient foot heating with a simple configuration, and therefore can be applied not only to vehicles but also to uses such as heating in audience seats in theaters and the like. .

Claims (5)

A sheet heater body in which a bendable heater wire is disposed on a sheet-like flexible substrate;
An extension part extending at least a part of the base material and arranging the heater wire;
Connecting the seat heater body and the extension part, and comprising a relay part provided with the heater wire,
The seat heater body is disposed in a vehicle seat, and the extending portion is disposed in at least one of a portion from the seat surface rear end of the seat to the seat bottom surface, or a backrest back side portion of the seat. Seat heating system.   The heating device for a seat according to claim 1, wherein the relay portion is provided with meandering heater wires. The extending portion of the seat surface side seat heater main body of the seat is disposed in a portion from the seat surface side rear end of the seat to the seat bottom surface,
The extension part of the seat heater body on the seat back side is disposed on the back side of the seat back,
The seat heating device according to claim 1 or 2, wherein the seat surface side relay portion and the backrest side relay portion are installed so as not to overlap each other. Control means for individually controlling energization to the heater wires disposed in the seat heater main body and the extension part,
Occupant detection means for detecting the presence or absence of an occupant in the seat,
The seat heating device according to any one of claims 1 to 3, wherein the control unit controls energization to the heater wire based on an output signal of the occupant detection unit.   A seat provided with the seat heating device according to claim 1 or 2, wherein at least a part from the rear end portion on the seat surface side to the bottom surface is provided with an inclined portion for inserting shoes, and the extending portion is arranged. Seat that was set up.

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