JPS631021Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a small air pump for air support in the sea of vehicles such as automobiles. More specifically, the present invention relates to the structure of an air support pump that has a good motor cooling effect.

Conventionally, air pumps used to supply air for air support for seats in automobiles, etc.
A small and lightweight vane type pump is used. However, vane-type pumps used for this purpose are often installed in small spaces with insufficient ventilation, and therefore, when operated continuously, the motor generates heat and rapidly reaches high temperatures, making it difficult to install equipment for safety reasons. The thermostat is activated and the motor stops. For this reason, it was difficult to carry out continuous operation, and the air support had the drawback of not being able to fully demonstrate its function.

The present invention has been made with the intention of providing an air support pump that eliminates these conventional drawbacks, improves the cooling effect of the motor, and enables continuous operation for a long period of time. The configuration of the present invention will be explained below based on the drawings.

Fig. 1 is an external perspective view of a conventional small vane pump for air support. A pump 2 driven by a motor 1 sucks air from an intake port 3 and sends the air in the direction of the arrow through a hose 5 connected to an exhaust port 4. Then send it to the air support. In such pumps, the motor 1 is not equipped with any special cooling means, and in such applications, forced cooling with air, water, etc. is not possible due to the installation environment, so the motor 1 quickly loses temperature. This causes the above-mentioned drawbacks.

FIG. 2 is an external perspective view showing one embodiment of the air support pump according to the present invention. That is, in the present invention, a spiral air passage is provided in contact with the outer periphery of the motor case of the motor 1 that drives the pump 2, and communicates with the intake port 3 of the pump. In the embodiment shown in the figure, a spiral pipe 7 having one end serving as a suction nozzle 6 and the other end connected to an intake port 3 of a pump is wound around the outer periphery of the motor case of the motor 1. This spiral pipe 7 is preferably made of a material with good heat transfer, and is preferably wound as tightly as possible around the outer circumference of the motor case.
As the pump operates, air is sucked in from the intake nozzle 6 as shown by the arrow, passes through the spiral pipe 7, and is sucked into the intake port 3 of the pump 1, so the motor 1 is cooled by the air passing through the pipe 7. , the temperature will not rise excessively.

3 and 4 are perspective views showing a cooling cover used in another embodiment of the present invention. The cooling cover 8 is a hollow cylindrical body with one end closed and the other end open, and its inner diameter is large enough to fit into the motor case of the pump motor 1.
An intake hole 9 is bored on the outer periphery near the closed end of the cooling cover 8, and a spiral groove 10 is provided on the inner surface of the cooling cover 8 continuously from the intake hole 9 to the open end. has a shape and size that allows the intake port 3 of the pump 2 to fit therein. This cooling cover 8 is fitted into the case of the motor 1 so that the groove end 11 fits into the intake port 3. (This mounting state is not particularly shown, but it will be obvious from the above explanation.) When the pump 2 is operated in this way, air is sucked in from the intake hole 9, passes through the spiral groove 10, and enters the intake port 3 of the pump. Cool the motor case in between. According to this embodiment, compared to the case where the spiral pipe 7 of the first embodiment is used, the air comes into direct contact with the motor case, so that the cooling effect is higher. Note that the cooling cover 8 may be provided with flanges 12, 12 for attachment to the pump at its open end as shown in FIG.

As is clear from the above explanation, the air support pump of the present invention can effectively cool the motor by skillfully using the air sucked into the pump, so the motor does not overheat as in the past. This is extremely useful as it allows the pump to operate continuously and allows the air support to function effectively.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a conventional pump, Fig. 2 is an external perspective view of one embodiment of the present invention, and Figs. 3 and 4 are perspective views of cooling covers used in other embodiments of the present invention. It is. 1...Motor, 2...Pump, 3...Intake port, 4...Exhaust port, 5...Hose, 6...Suction nozzle, 7...Spiral pipe, 8...Cooling cover,
9... Intake hole, 10... Spiral groove, 11... Groove end, 12... Flange.

Claims (1)

[Scope of utility model registration request] A pump for air support, characterized in that a spiral air passage is provided in contact with the outer periphery of a motor case of a small air pump for air support of seats in automobiles, etc., and that leads to an intake port of the pump.