JPH06206436A - Heater unit - Google Patents

Abstract

PURPOSE:To provide a heater unit which is related to a heater unit installed within a main pad having a facing and a hanging groove, such as a seat for vehicle, used for heating the seat surface, and having no foreign matter sense, and can obtain a stable operation. CONSTITUTION:At almost the center of a heater unit which consists of a heater wire 3 provided to a holder body 2, a lead wire 4 to feed the power, and a thermostat 5 connected in series between the lead wire 4 and the heater wire 3, the thermostat 5 is provided to the position having a tongue piece 7 in a slit 6, it is positioned to the hanging groove of a main pad, and the temperature variation to the surface of the seat owing to the uneven arrangement of the thermostat 5 is eliminated, so as to obtain a stable operation constantly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the shape and the like of a heater unit arranged in a vehicle seat or the like for heating a seated person.

[0002]

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

Generally, a vehicle seat is a seat 2 as shown in FIG.
A groove-shaped recess 2 in the center of the seat 21 and back 22
5a and 25b are formed, and heater units 23 and 24 are built in the seat portion 21 and the back portion 22, respectively.

As shown in FIG. 8, the heater unit built in the seat 20 is composed of a flexible support member 30 such as felt, a heater wire 31, and a thermostat 34. Electric power is supplied to the heater unit 29 through the lead wire 32.

FIG. 9 shows a main pad 26 for maintaining the cushioning property of the seat 20, and a suspension groove 28 is formed at the positions of the groove-shaped recesses 25a and 25b. That is, as shown in FIG. 8, the heater unit 29 is provided with a cutout hole 33 at the position of the hanging groove 28, and the thermostat 34 is arranged near the cutout hole 33 in order to detect the temperature of the heater unit 29. ing.

In this case, a recess 27 is formed in the main pad 26 at the position of the thermostat 34, as shown in FIG. 9, so that the thermostat 34 does not give a foreign body sensation when seated on the seat 20. (Japanese Utility Model Publication No. 62-28932) FIG. 10 is an enlarged sectional view of the suspension groove 28 portion of FIG.
The recess 2 is formed in the main pad 26 at the position of the thermostat 34.
7 is formed so as to allow the thickness of the thermostat 34 to escape and reduce the feeling of foreign matter when sitting.

[0007]

In such a conventional heater unit 29, it is necessary to form the concave portion 27 in the main pad 26 at the position of the thermostat 34, and the position of the thermostat 34 is fixed. The degree of freedom is impaired, and the change of the position of the thermostat 34 leads to a change of the mold, which causes a cost increase.

Further, due to the positional variation of the thermostat 34, the thermostat 34 cannot be properly arranged in the recess 27, which affects the operating temperature of the thermostat 34 and forms the recess 27 in the main pad 26, so that the surface of the seat 20 is wrinkled. However, even if the recess 27 is provided, the feeling of foreign matter when seated cannot be completely eliminated.

Therefore, the present invention has been made to solve the above problems, and a first object thereof is to provide a heater unit which eliminates the feeling of foreign matter when seated without forming a recess in the main pad at the position of the thermostat. .

A second object is to provide a heater unit capable of stable operation of the thermostat.

[0011]

In order to achieve the first object of the present invention, a tongue formed by a slit is provided at a substantially central portion of a flexible support, and the thermostat is provided on the tongue. Is arranged.

Further, in order to achieve the second object, the present invention is a heater wire arranged on a support, wherein the heater wire near the tongue is extended and arranged on the tongue.

[0013]

With the above-described structure, the present invention eliminates the feeling of foreign matter when seated without forming a recess in the main pad at the thermostat position.

Further, the thermostat can always operate stably with respect to changes in the operating environment temperature and the like.

[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, in the heater unit 1, a heater wire 3 is disposed on a flexible support 2 such as felt, and a lead wire 4 for supplying power for supplying electric power to the heater wire 3. A thermostat 5 is connected between the lead wire 4 and the heater wire 3.

A tongue piece 7 formed of a slit 6 is provided near the central portion of the heater unit 1, that is, at the position of the hanging groove 11 of the main pad 9, and the thermostat 5 is fixed and arranged on the tongue piece 7. As shown in FIG. 3, the tongue piece 7 holding the thermostat 5 is arranged on the side surface of the suspension groove 11 of the main pad 9.

The tongue piece 7 holding the thermostat 5 is held in close contact with the side surface of the hanging groove 11 by hanging the skin 10 of the seat 20 in the hanging groove 11 of the main pad 9.

FIG. 2 shows a slit 6 in the vicinity of the substantially central portion of the heater unit 1 before the thermostat 5 of FIG.
The tongue piece 7 formed in FIG. This is the heater unit 1
The tongue 7 can be formed at the same time when the shape is cut out, and depending on the size and position of the thermostat 5, the holes 8 and 9 other than the tongue 7 may be formed.

FIG. 4 is an enlarged cross-sectional view in which the tongue piece 7 having the thermostat 5 fixed and arranged on the side surface of the hanging groove 11 of the main pad 9 shown in FIG. 3 is arranged. The thermostat 5 conducts heat from the heater unit 1. Also, it operates by keeping warm when seated in the seat 20, turning on / off the power supply to the heater unit 1.
Control.

Next, in FIG. 5, the heater wire 3 in the vicinity of the tongue 7 is extended from the heater wire 3 provided on the support 2 to the tongue piece 7 formed by the slit 6 to heat the thermostat 5. The auxiliary heater 13 is configured, and the auxiliary heater 13
Is the installation length, the installation area, the capacity per unit area (W
/ M ² ) etc. to adjust the heating amount of the thermostat 5 and set the optimum operating time.

FIG. 6 shows another embodiment of the tongue piece 7a formed by the slit 6a in the substantially central portion of the flexible support 2a. The shape of the tongue piece 7a is that of the thermostat 5 or that of the main pad 9. The hanging groove 11 can be formed into an optimum shape depending on the shape of the hanging groove 11.

[0023]

As is apparent from the above embodiments, the heater unit of the present invention is provided with the tongue formed by the slit in the substantially central portion of the support, and the thermostat is arranged on this tongue. It is possible to obtain the effect like.

(1) It is not necessary to form a recess in the main pad of the seat on which the thermostat is located, the thermostat can be arranged at any position, and no mold is required to form the recess, and the design is entirely on the heater unit side. Only support is required, and the degree of freedom in design is greatly improved.

(2) Furthermore, since it is not necessary to form a thermostat recess in the main pad, wrinkles do not occur on the seat surface and the feeling of foreign matter when seated is eliminated.

(3) By disposing the thermostat on the tongue piece and closely contacting the side surface of the hanging groove, the thermal environment of the thermostat is stabilized and the operation of the thermostat is stabilized.

The following effects can be obtained by constructing an auxiliary heater for extending the heater wire near the tongue formed by the slit and heating the thermostat.

(4) The temperature change to the thermostat due to the arrangement variation of the thermostat is eliminated, the stable operation of the thermostat is obtained by the constant heating, and the operating time of the thermostat for the setting of the operating environment temperature and the temperature of the seat surface is arbitrary. Can be designed and adjusted.

[Brief description of drawings]

FIG. 1 is a plan view of a heater unit 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 sectional view of the hanging portion of the vehicle seat of the embodiment.

FIG. 4 is an enlarged sectional view of a hanging portion of the vehicle seat according to the embodiment.

FIG. 5 is a plan view of the heater unit according to the embodiment.

FIG. 6 is a plan view of the heater unit according to the embodiment.

FIG. 7 is a perspective view of a vehicle seat and is commonly used.

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

FIG. 9 is a perspective view of a conventional main pad of a vehicle seat.

FIG. 10 is a cross-sectional view of a suspension portion of a vehicle seat of another conventional heater unit.

[Explanation of symbols]

 1 Heater Unit 2 Support 3 Heater Wire 4 Lead Wire 5 Thermostat 6 Slit 7 Tongue Piece

Claims (2)

[Claims] 1. A heater wire provided on a flexible support, a lead wire for supplying electric power to the heater wire, and a thermostat connected in series between the lead wire and the heater wire. A heater unit in which a tongue formed of a slit is provided in the substantially central portion of the support, and the thermostat is arranged on the tongue. 2. The heater unit according to claim 1, wherein the heater wire is provided on the support, and the heater wire in the vicinity of the tongue is provided so as to extend to the tongue.