JPH0971123A - Floor heating structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat a floor without being affected by the positions of legs by installing hot-water tanks nearly wholly on the lower side of the floor on the front side of seat installation positions of a vehicle, and circulating hot water between the hot-water tanks and the cooling water path of an engine. SOLUTION: Hot-water tanks 11, 12, 13 are installed nearly wholly on the lower side of a floor 3 on the front side of seats 4, 5, 6, and hot water is fed to the hot-water tank 11 from a front heater unit 14 via a hot-water feed path 15. The hot water is circulated to the front heater unit 14 from a circulation path 16, hot water is fed to the hot-water tank 12 from a rear heater unit 17 via a hot-water feed path 18, it is further fed to the hot-water tank 13 via a connection path 19, and it is circulated to the rear heater unit 17 from a circulation path 20. Flow adjusting valves 21, 22 are provided on the hot-water feed paths 15, 18 for the on/off-control and temperature adjustment of floor heating. Hot-water feed paths 24, 25 and circulation paths 26, 27 are connected from the cooling water path of an engine 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating structure for vehicles such as automobiles.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A front seat (4), a second seat (5) and a third seat (6) are installed on the floor (3) of (2), and the front seat (4) is located in front of the passenger compartment (2). Hot air outlet (7)
The second seat (5) and the third seat (6) are provided with a warm air outlet (8,
9) is provided.

[0003]

In the above conventional structure, depending on the position where the foot is placed, there is a case where the air blown out from the hot air outlet (7,8,9) hits the air, and there is a case where it does not hit the foot. There are places where you cannot get a feeling of heating.

[0004]

As a means for solving the above-mentioned conventional problems, the present invention provides a seat (4,5, 5,
6) On the front side of the installation position, a hot water tank (11, 12, 13) is installed almost entirely under the floor (3), and hot water is provided between the hot water tank (11, 12, 13) and the engine cooling water passage. It provides a floor heating structure for a circulating vehicle (1).

[0005]

1 and 2 show an embodiment of the present invention. A carpet (10) is laid on the floor (3) of the passenger compartment (2) of the vehicle (1), and a front seat (4) is laid on the carpet (10).
, A second seat (5) and a third seat (6) are installed. On the front side of each seat (4,5, 6), a hot water tank (11, 12, 13) is installed almost entirely under the floor (3),
Hot water is supplied to the hot water tank (11) from the front heater unit (14) through the hot water supply passage (15), and the hot water is supplied to the circulation passage (1
6) is circulated from the front heater unit (14) to the hot water tank (12) from the rear heater unit (17) to the hot water supply passage (1
Hot water is supplied via 8), the hot water is further supplied to the hot water tank (13) via the communication path (19), and the hot water is circulated from the circulation path (20) to the rear heater unit (17). . A flow rate control valve (21, 22) is provided in each hot water supply path (15, 18) to turn on / off the floor heating and control the temperature. Each heater unit (14, 17) is connected to the hot water supply channel (24, 25) and the circulation channel (26, 27) from the cooling water channel of the engine (23).

[0006]

In the above structure, hot water is supplied to the hot water tanks (11, 12, 13) from the cooling water passage of the engine (23) and the seats (4,5,
Since the floor (3) in front of (6) is heated extensively, the feet of the person sitting on each seat (4,5,6) can be heated without being affected by the position of the feet.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention.

FIG. 1 is a side sectional explanatory view.

FIG. 2 is an explanatory plan view

FIG. 3 is a side cross-sectional explanatory view of the related art

[Explanation of symbols]

 1 Vehicle (automobile) 2 Cabin 3 floors 4,5,6 seats 11,12,13 Hot water tank 23 Engine

Claims (1)

[Claims] 1. A floor heating structure for a vehicle, characterized in that a hot water tank is installed substantially entirely under the floor in front of a seat installation position of the vehicle, and hot water is circulated between the hot water tank and an engine cooling water passage.