JP2000342382A - Seat with heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control a temperature with high accuracy corresponding to the change of environment of a seating face by integrally burying and fixing heating elements and a temperature controller in a foamed resin material, and mounting the temperature controller at a lower part of the seating part. SOLUTION: A urethane main pad is used as one of base materials of a cushioning seat of an automobile and the like, and a foamed body 12 formed by a cord-like tubing heater is distributed in a die of the main pad in advance. A thermostat capable of detecting and controlling a temperature of the heating elements, is placed on an approximately central part of the heating elements 12, the urethane undiluted solution is poured for integrally burying and fixing the heating elements 12 and the thermostat 13 by the foamed molded and hardened resin material 4. The existence of the heating elements 12 and the thermostat 13 is hardly felt by the hips, and a seat with heater superior in the seating comfort can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat with a heating device for an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, a seat with a heating device for an automobile or the like is provided with a flexible core material 11 and a heater wire 12 as shown in FIG.
As shown in FIG. 6, the heater unit 1 provided with the thermostat 13 is interposed between the main pad 2 on the seat and the back and the skin material 3.

At this time, the thermostat 13 is arranged at the back of the seat or at the back of the seat, which is separated from the seat and the back of the human body, so that the occupant does not feel uncomfortable when seated. I have.

[0004]

Originally, it is desirable that the temperature control device of the heating device be directly disposed on the seat portion in order to perform the control with high accuracy. However, in the above-described method, since the temperature control device is disposed farther from the seating portion, for example, the weight of the occupant is slightly different, and the difference between a woman who is considered to be more cold and a man who is not so cold is considered. There was a problem that the temperature control of the heating device could not accurately respond to the change.

[0005] Further, since the heater unit is interposed between the cushion material and the skin material of the seat, if the heater unit has been used for many years, a flexible core material can be obtained by repetition of getting on and off and sitting on the seat. , Wrinkles and tarmi are likely to occur, for example, if wrinkles approach at a right angle to the heater wire,
Eventually, there was a problem that the heater wire was disconnected.

[0006]

According to the present invention, a heating element and a temperature control device are integrally buried and fixed in a foamed resin material, and the temperature control device is provided below a seating portion. Have been placed.

[0007] According to the above invention, the temperature control of the heating device can accurately cope with the environmental change of the seating surface.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention comprises a heating element, a temperature control device, and a foamed resin material, wherein the heating element and the temperature control device are integrally embedded and fixed in the foamed resin material. .

Further, the heating unit and the temperature control device are arranged on a flexible core material to constitute a heater unit, and the heater unit is integrally embedded and fixed in the foamed heat insulating material.

Further, the flexible core material is provided with a means for preventing intrusion of the foamed resin material stock solution.

Further, the temperature control device is arranged below the seating portion.

Further, the temperature control device is constituted by a thermostat.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows a first embodiment of the present invention.
It is a sectional lineblock diagram of a seat with a heating device. A heating element 12 composed of a cord-shaped tubing heater and a thermostat 13 for detecting and controlling the temperature of the heating element are integrally embedded and fixed in the foamed resin material 4. One of the base materials of a seat having cushioning properties such as an automobile is a urethane main pad. The heating element 12 is wired in advance to the mold of the main pad, and the thermostat 13
Is placed, and a urethane stock solution is injected, foamed and molded and cured integrally.

(Embodiment 2) FIG. 2 shows Embodiment 2 of the present invention.
It is a top view of the heater unit which comprises the seat with a heating device. A heater unit 1 is constituted by disposing a heating element 12 composed of a cord-shaped tubing heater and a thermostat 13 for detecting and controlling the temperature of the heating element at substantially the center of the core material 11. FIG. 3 is a cross-sectional configuration diagram in which the heater unit 1 is integrally embedded and fixed in the foamed resin material 4.

The manufacturing method is the same as that of the first embodiment, except that the heater unit 1 is mounted on the mold of the main pad in advance, and a urethane stock solution is injected, and foaming and molding are integrally performed. However, depending on the material of the core material 11, there is a problem that the urethane stock solution is sucked. FIG. 4 is a view in which a coating material 5 for preventing impregnation is applied to a core material 11 made of a cloth such as a nonwoven fabric. FIG. 5 shows that a protective sheet 6 is provided on a core 11 made of a cloth such as a nonwoven fabric.
FIG.

In this embodiment, a cord-shaped tubing heater is used for the heating element 12, but a film heater obtained by etching a heat-generating metal foil on a resin film may be used.

[0018]

As described above, the seat with the heating device of the present invention includes the heating element, the temperature control device, and the foamed resin material, and the heating element and the temperature control device are integrated with the foamed resin material. The heater unit is constructed by burying and fixing the heating unit and the heating element and the temperature control device are arranged on a flexible core material, and the heater unit is integrally buried and fixed in the foamed resin material. Or a configuration in which the temperature control device is arranged below the seating portion, and since the temperature control device is configured by the thermostat, accurate temperature control corresponding to a change in the environment of the seating surface can be performed.

Further, with this configuration, the heater wire and the thermostat are less likely to be felt at the buttocks, and a seat with a heating device with a good seating feeling can be provided.

In addition, since it is not interposed between the cushion material of the seat and the skin material, there is an advantage that reliability is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a seat with a heating device according to a first embodiment of the present invention.

FIG. 2 is a plan view of a heater unit constituting a seat with a heating device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a seat with a heating device according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a core constituting a seat with a heating device according to a second embodiment of the present invention;

FIG. 5 is a sectional view of a core material constituting a seat with a heating device according to a second embodiment of the present invention.

FIG. 6 is a sectional view of a conventional seat with a heating device.

FIG. 7 is a plan view of a heater unit constituting a conventional seat with a heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heater unit 2 Main pad 3 Skin material 4 Foam resin material 5 Coating agent 6 Protective sheet 11 Core material 12 Heating body 13 Thermostat (temperature control device)

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroshi Mitsunaga 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Term (reference) 3B084 JA03 JA06 JF01

Claims (5)

[Claims] 1. A seat with a heating device, comprising a heating element, a temperature control device, and a foamed resin material, wherein the heating element and the temperature control device are integrally embedded and fixed in the foamed resin material. 2. A seat with a heating device, wherein a heating unit and a temperature control device are arranged on a flexible core material to constitute a heater unit, and the heater unit is integrally embedded and fixed in a foamed resin material. . 3. The seat with a heating device according to claim 2, wherein the flexible core material has means for preventing intrusion of the foamed resin material stock solution. 4. The seat with a heating device according to claim 1, wherein the temperature control device is disposed below the seat portion. 5. The seat with a heating device according to claim 4, wherein the temperature control device comprises a thermostat.