JPH0134924Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a heater for wipers in automobiles, trains, ships, etc. (hereinafter simply referred to as vehicles, etc.), particularly in extremely cold regions.

BACKGROUND ART As is generally known, when driving a vehicle in rainy or snowy conditions, it is essential to use wipers to ensure forward visibility. By the way, in winter, even if you try to wipe off the rain or snow that falls on the windshield of a vehicle in a very cold region with a wiper or cleaning device, if the temperature drops significantly, the snow or rain that falls on the windshield will freeze and be wiped away. In addition, snow may gradually accumulate below the windshield, significantly reducing the wiper function, or snow that has become semi-molten due to the temperature inside the car may fall onto the windshield due to the low temperature outside. Ice often forms, rendering wipers and cleaning equipment useless.

In order to solve these problems unique to extremely cold regions, various proposals have been made in the past, such as incorporating hot wires into vehicle wipers and windshields, and using some of the hot water for engine cooling. However, for example, devices that use hot wires are usually powered by a battery, which not only increases the load on the battery and shortens its lifespan, but also makes it difficult to generate a large amount of heat, especially in low-temperature conditions. It is of little use under In addition, although it is possible to easily obtain a considerable amount of thermal energy using hot water for engine cooling, it is necessary to provide branch passages in the cooling water circulation passage, making the structure complicated and requiring long-term use such as in summer. There are problems such as being troublesome to remove when not in use. Further, when hot water is directly diverted from the cooling water circulation passage, it is necessary to use special means such as a circulation pump, which results in a large-scale and high-cost system.

Problems that the invention aims to solve Therefore, the present invention solves the drawbacks and problems of the wiper heater of the conventional structure as mentioned above, and has a simple structure, easy to install and remove, and a safe and sufficient heater. The purpose of the present invention is to provide an improved wiper heater for vehicles, etc., which can guarantee the amount of heat generated.

Means for Solving the Problems In order to achieve the above objectives, according to the present invention,
A check valve for taking out hot water and a check valve for returning hot water are installed in the heater hose that extends from the water pump to the car heater and the heater hose that runs from the heater to the engine block, respectively, and a hot water circulation pipe member is installed around each wiper body. and connect one end of each hot water circulation pipe member to the hot water outlet of the hot water take-out check valve, and connect the other end of each hot water circulation pipe member to the hot water return port of the hot water return check valve. A portion of the hot water from the water pump is guided to the hot water circulation pipe members around each wiper body through the hot water take-out check valve, and the hot water that has circulated through each hot water circulation pipe member is passed through the hot water return check valve. There is provided a wiper heater for a vehicle, etc., characterized in that the heater is configured to flow through the heater hose to the engine block through the heater hose.

By having this configuration, the wiper heater of this invention can obtain the necessary thermal energy by simply bypassing a portion of the hot water circulating to the car heater, and can be used for long periods such as summer. When not in use, it is only necessary to close the two check valves, making the device easy to maintain. Furthermore, the wiper heater of the present invention does not require any electrical energy to operate, and does not place an excessive load on the battery of a vehicle or the like. Furthermore, since each wiper is provided with a hot water circulation path in parallel, it can be easily assembled and installed regardless of the number of wipers.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an automobile wiper heater according to an embodiment of the present invention, and 1 is a car heater, and this car heater 1 has a heater hose that receives hot water from a water pump (not shown). 2 and engine block (not shown)
A heater hose 3 for returning hot water is connected to the heater hose 3. Check valves 4 and 5 having the same structure are attached to each heater hose 2 and 3, respectively, as shown in FIG. 2, and one of the check valves 4 serves as a hot water extraction check valve.
The two hot water outlets 4a and 4b are connected to heat-resistant and pressure-resistant flexible tubes, such as rubber tubes 6 and 7.
The rubber pipe 6 surrounds one wiper 8 and forms a hot water return check valve 5.
Similarly, the rubber tube 7 surrounds the other wiper 9 and is connected to the other hot water return port 5b of the other check valve 5.

The attachment of each rubber tube 6, 7 to each wiper 8, 9 may be carried out as shown schematically in FIGS. , 7a are removably attached using suitable attachment means not shown. In this case, the pipe section 6a or 7a attached around the wiper blade 11 can be a metal pipe with good thermal conductivity, in which case a metal hot water conduit is provided in advance in the wiper body 10 itself. Good too.

In the operation of the wiper heater configured in this way, hot water flows through the heater hose 2 toward the car heater 1 by opening the check valves 4 and 5 attached to the heater hoses 2 and 3 of the car heater 1. A part of the two openings 4 of the check valve 4
a, 4b into flexible tubes 6, 7 and fitted around each wiper 8, 9 to a tube section 6a, 7.
a to the heater hose 3 via the flexible tubes 6, 7 and the check valve 5. This allows the pipe section 6
Each wiper blade 11 is warmed by the warm water circulating through the wiper bodies 10a and 7a, thereby preventing the windshield surface that comes into contact with it from freezing, and the warm water circulating through the pipe portions 6a and 7a around the wiper body 10. and attached hardware etc. are heated,
The pendulum action of the wipers 8 and 9 can melt snow that accumulates particularly below the windshield.

Further, when the wipers 8 and 9 are not used for a long period of time, such as during summer, the check valves 4 and 5 are closed, and the piping from each check valve to each wiper 8 and 9 can be easily removed if necessary.

Effects As explained above, according to the present invention, there is provided a wiper heater that utilizes a portion of the hot water supplied to the car heater, has a sufficient amount of heat, has a simple structure, is easy to handle, and is safe. This allows the wipers to operate reliably without freezing even in extremely low temperatures, and also melts snow that accumulates on the windshield, ensuring sufficient visibility for driving. can do.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a partial sectional view showing how the check valve is installed, and Figs. 3 and 4 show how the heater is installed to the wiper. They are a front view and an enlarged cross-sectional view, respectively. In the figure, 4, 5... Check valve, 6, 7... Pipe member,
6a, 7a...pipe part, 8, 9...wiper, 1
0... Wiper body, 11... Wiper blade.

Claims (1)

[Scope of utility model registration request] A check valve for taking out hot water and a check valve for returning hot water are installed in the heater hose that extends from the water pump to the car heater and the heater hose that runs from the heater to the engine block, respectively, and a hot water circulation pipe member is installed around each wiper body. and connect one end of each hot water circulation pipe member to the hot water outlet of the hot water take-out check valve, and connect the other end of each hot water circulation pipe member to the hot water return port of the hot water return check valve. A portion of the hot water from the water pump is guided to the hot water circulation pipe members around each wiper body through the hot water take-out check valve, and the hot water that has circulated through each hot water circulation pipe member is passed through the hot water return check valve. A wiper heater for a vehicle, etc., characterized in that the heater is configured to flow through the heater hose to the engine block.