JPH0820225A - Heater unit - Google Patents

Abstract

PURPOSE:To enable changeover use between local heating with quick-heating ability and heating for the whole seat face. CONSTITUTION:In a heater unit disposed at a seat formed of a back part 4 and a seat part 3, a heater unit 1 for the seat part 3 is divided into a front area and a rear area, and a heater unit 2 for the back part 4 is divided into an upper area and a lower area. The divided areas are formed of separate circuits, and the wiring spacing of the heaters wired in the rear area and the lower area are made narrow. The heater unit thereby has quick-heating ability of quickly heating only a part of the body so as to improve the use feeling of a sitting person.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater wiring, a circuit configuration and the like of a heater unit which is installed in a vehicle seat or the like and heats a seated person.

[0002]

2. Description of the Related Art In recent years, heating has been performed by incorporating a heater unit in a vehicle seat. Hereinafter, a conventional configuration of this heater unit will be described with reference to FIGS.

Generally, the seat portion 20 for a vehicle is as shown in FIG.
The seat portion 21 and the back portion 22 are configured, and the seat portion 21 and the back portion 22 respectively include a seat portion heater unit 23 and a back portion heater unit 24.

A seat heater unit 23 and a back heater unit 24 built in such a seat 20 are provided.
Is a flexible support 25 as shown in FIGS.
a, 25b and heater wires 26a, 26b, and electric power is supplied through lead wires 27a, 27b (note that a power supply for supplying electric power, a temperature controller, etc. are not shown).

The heater wires 26a and 26b provided on the supports 25a and 25b are provided at substantially equal intervals as shown in FIG. 8, or the heater wires are provided with coarse and dense intervals as shown in FIG. Is a common wiring method. Also, as shown in FIG. 11, there is a heater unit in which the inside and the outside of the heater unit are wired with separate circuit wiring.

As shown in FIG. 10, the seat heater unit 23a built in the seat 21 and the back heater unit 24a built in the back 22 are connected to the power source 31 via the temperature switching switch circuit 30. It is connected to the.

FIG. 12 is a circuit diagram of a case where separate heater wiring circuits are formed inside and outside the heater unit as shown in FIG. 11, and only the inner heater wiring circuits 29a and 29b are operated by operating the switch circuit 32. It is a method of switching the temperature by opening and closing.

[0008]

In such conventional heater units 23 and 24, the heater circuit wired over the entire area is turned on / off by switching operation of the switch circuits 30 and 31.
Most of the heating of the entire seating surface is performed by switching the power supply to the heater units 23 and 24 by FF, which impairs the satisfaction and the feeling of use for the seated person (user) who wants to warm only the local area quickly. It was a factor.

Further, there is a limitation in the power consumption of the heater units 23 and 24 in view of the battery capacity of the vehicle, etc., and there is a drawback that the quick heating property of quickly warming up when seated cannot be obtained.

SUMMARY OF THE INVENTION Therefore, the first object of the present invention is to solve the above-mentioned drawbacks, and it is a first object of the present invention to provide a heater unit capable of quickly warming only a local portion of a seated person.

A second object of the present invention is to provide a heater unit capable of switching between local heating having a quick heating property and conventional heating for heating the entire seat.

[0012]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention has a heater unit installed in the seat of a seat in the front and rear areas and a heater unit installed in the back. Is divided into upper and lower regions, the heater wiring circuit in each region is configured by a separate circuit, and the heater wiring distance between the rear region of the seat and the lower region of the back is set to the front region of the seat and the back region of the seat. It is narrower than the heater wiring interval in the upper region.

In order to achieve the second object, the present invention provides a series connection of heater wiring circuits in the rear region of the seat and the lower region of the back, and the front and rear regions of the seat and the upper region of the back. The circuit configuration is such that the lower heater wiring circuit is connected in series.

[0014]

According to the present invention, with the above-described structure, the quick heating property of quickly heating only the local portion is obtained, and the feeling of use of the seated person is improved. It is also possible to switch between local heating and overall heating of the seat.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the heater unit of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the seat 5 is composed of a seat portion 3 and a back portion 4, and the seat portion heater unit 1 and the back portion heater unit 2 are built in the seat portion 3 and the back portion 4, respectively.

The seat heater unit 1 is divided into a front region A and a rear region B of the seat 3 as shown in FIG. 2, and the heater 6 in the rear region B has a narrower space than the heater 7 in the front region A. Wired.

Further, as shown in FIG. 3, the heater 6 in the rear area B and the heater 7 in the front area A of the heater unit 1 for the seat portion are respectively constituted by different circuits, and the connectors 9, 1 are connected through lead wires 8.
Connected to 0.

FIG. 4 shows the back heater unit 2 in the upper region C.
The heater 11 in the lower region D is wired with a narrower interval than the heater 12 in the upper region C, and the heater 11 in the lower region D and the heater 12 in the upper region C are respectively separated as shown in FIG. It is configured by another circuit and is connected to the connector 14 through the lead wire 13.

FIG. 6 is a circuit diagram of a heater unit (shown in FIG. 1) built in the seat 5. The seat heater unit 1 shown in FIG. 2 and the back heater unit 2 shown in FIG. It is connected to the power supply 17 via the switch 16.

Here, when the switch 16 is set to the "Y" side, the heater is energized by the following circuit from the power supply 17.

Power supply 17 → connector 15 "ko" → connector 9
“A” → heater 6 in rear area B → connector 10 “f” → connector 14 “ki” → heater 11 in lower area D → connector 14 “ke” →
Connector 10 “D” → Connector 9 “U” → Connector 15 “C”
→ Power source 17, that is, when the switch 16 is set to the “Y” side, the heater 6 in the rear region B of the seat portion 3 and the heater 11 in the lower region D of the back portion 4 are connected in series and are energized, so that only the local portion of the seated person ( The hips and waist, for example) are heated.

Further, since the heater wiring interval is narrower than that of the heater 7 in the entire area A of the seat portion 3 and the heater 12 in the upper area C of the back portion 4, the power density per unit area is large and the temperature raising performance is improved. Therefore, it is possible to perform local heating with excellent rapid heating.

Next, when the switch 16 is set to the "X" side, the heater is energized from the power source 17 by the following circuit.

Power supply 17 → connector 15 "ko" → connector 9
“A” → heater 6 in rear part B → connector 10 “f” → connector 14 “ki” → heater 11 in lower area D → heater 12 in upper area C
→ connector 14 "ku" → connector 10 "o" → heater 7 in front area A → connector 9 "a" → connector 15 "sa" → power source 17, that is, when switch 16 is set to "X" side Since the heater 7 of the front part A and the heater 6 of the rear part B of the part 3, and the heater 12 of the upper part C and the heater 11 of the lower part D of the back part 4 are connected in series and energized, the entire seating surface of the seat 5 is heated. It

This is done by setting the switch 16 to the "Y" side (the seat 3
When the heater 6 in the rear area B and the heater 11 in the lower area D in the back portion 4 are connected in series), the resistance value of the heater increases, so that the power consumption also decreases and the power density per unit area decreases. Then, the heating equivalent to "weak" becomes possible.

[0027]

As is apparent from the above embodiments, the heater unit of the present invention has a heater unit arranged at the seat portion of the seat in the front region and the rear region, and at the back portion thereof. Is divided into upper and lower areas, and the heater wiring circuit in each area is configured by a separate circuit, and the heater wiring interval between the rear area of the seat and the lower area of the back is the heater of the front area and the upper area. Since the distance is smaller than the wiring interval, the following effects can be obtained.

(1) Any portion of the seating surface can be locally heated (for example, the waist). (2) Only required areas can be heated and the limited capacity of the power source can be effectively utilized.

(3) The power density per unit area can be increased, and the rapid heating property can be improved. In addition, the series connection of the heaters wired in the rear area of the seat heater unit and the lower area of the back heater unit, and the series connection of the heaters in the front area and rear area of the seat and the upper area and lower area of the back The following effects can be obtained by adopting a circuit configuration that switches the.

(4) Local heating having a rapid heating property and full heating for heating the entire seating surface can be freely switched and used.

(5) Furthermore, since the heater installation area, heater resistance, heater wiring interval, etc. can be set arbitrarily,
It is possible to design according to the purpose and application.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a plan view of a heater unit of the same embodiment.

FIG. 3 is a circuit diagram of the embodiment (FIG. 2).

FIG. 4 is a plan view of the heater unit according to the embodiment.

FIG. 5 is a circuit diagram of the same embodiment (FIG. 4).

FIG. 6 is a circuit configuration diagram of a heater unit of the same embodiment.

FIG. 7 is a perspective view of a conventional vehicle seat.

FIG. 8 is a plan view of a conventional heater unit.

FIG. 9 is a plan view of a conventional heater unit.

FIG. 10 is a circuit configuration diagram of a conventional heater unit.

FIG. 11 is a plan view of a conventional heater unit.

FIG. 12 is a circuit configuration diagram of a conventional heater unit.

[Explanation of symbols]

 1 Heater unit for seat 2 Heater unit for back 3 Seat 4 Back 5 Seat 6 Heater in rear area 7 Heater in front area 11 Heater in lower area 12 Heater in upper area

Claims (2)

[Claims] 1. A heater wiring circuit for each region, comprising a heater unit disposed in a front region and a rear region of the seat portion, and a heater unit disposed in an upper region and a lower region of the back portion. And a heater unit in which the heater wiring distance between the rear area of the seat and the lower area of the back is narrower than the heater wiring distance between the front area of the seat and the upper area of the back. 2. A series connection of heater wiring circuits in the rear area of the seat and a lower area of the back, and a series connection of front and rear areas of the seat, and upper and lower areas of the back of the seat. The heater unit according to claim 1, which has a circuit configuration for switching.