JPS6240136Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a small pump having a control function.

A pump having a control function must have a heat dissipation function if a heat generating component such as a transistor is used in the control section.

Conventional heat generating elements such as transistors are configured to radiate heat by providing a dedicated heat sink, but this heat sink needs to be a certain size to be effective in radiating heat, so it is difficult to store it inside a case because it is small. The pump was inconvenient.

However, although exposing the heat sink improves the heat dissipation effect, it is inconvenient because the pump handles water and must take precautions to prevent electrical leakage.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a pump that is compact and has an efficient control function without impairing the function of the pump.

Hereinafter, the present invention will be described based on an embodiment shown in the drawings. The figure is a vertical cross-sectional view of the main part of an embodiment of the pump according to the present invention.

In the figure, the pump includes a pump section 2 provided on one side of an electric motor 1, and a control section 4 provided on the other side via an L-shaped steel plate 3.

One side 5 of the steel plate 3 is used for mounting the electric motor 1 and the control unit 4,
The other side 6 is used for the legs.

Further, a control transistor 7 is attached to one side 5 of the steel plate 3, and a recess 8 is formed inside the motor 1 to enable wiring.

Further, a cover 9 is provided on one side 5 of the steel plate 3 so as to cover the control section 4.

In such a configuration, the pump is powered by an electric motor 1
A pump part 2 is provided on one side, and a steel plate 3 is provided on the other side.
One side 5 is provided and fixed together by tightening with bolts or the like.

And on one side 5 of the steel plate 3. A control transistor 7 serving as a heat generating component is attached, and a control section 4 formed of a printed circuit board or the like is wired and attached.

Further, a cover 9 is attached to one side 5 of the steel plate 3, and if a sealant or the like is applied at this time, water resistance can be improved, and the control section 4, which is sensitive to moisture and dew drops, can be protected.

Moreover, even if the cover 9 eliminates ventilation, the transistor 7, which is a heat-generating component, can be covered with the steel plate 3.
By attaching it to one side 5 of the steel plate 3, heat can be radiated by the heat radiating action of the steel plate 3, which is convenient.

In particular, the heat radiation of the steel plate 3 is effective because the other side 6 serves as a leg, so it has a considerable heat radiation area, and if it is fixed to other equipment, the heat can be radiated conveniently.

In addition, if the cover 9 is made of metal, the control unit 4 can be protected in combination with the steel plate 3, and the other side 6 of the steel plate 3 can be used as legs to fix it to the equipment or the ground. Malfunctions of the control unit 4 can be prevented by suppressing electrical noise.

Such a steel plate 3 can be easily manufactured by bending the iron plate into an L shape with a press, processing screw holes etc. in the mounting part, and applying the necessary anti-corrosion treatment such as painting, and it is extremely convenient for manufacturing. good.

If a through bolt is used to pass through the motor 1 from the steel plate 3 to the pump part 2, it can be easily assembled and manufactured using fewer parts.

Furthermore, a transistor 7 is attached to one side 5 of the steel plate 3.
and the control unit 4 can be assembled and installed in advance, and can be easily assembled by attaching it to the other side of the electric motor 1.
The procedure of attaching components of the control unit 4 such as thin electronic parts to a relatively heavy pump can be avoided.

By forming a concave portion 8 in a portion of the electric motor 1 where the steel plate 3 is attached, wiring can be wired to one side 5 of the steel plate 3 on the electric motor 1 side.

The transistor 7 can be attached directly to the steel plate 3 by interposing an insulating material that has few obstacles to heat conduction. Normally, the pin of the electrode of the transistor 7 penetrates the steel plate 3, but if a recess 8 is formed, the transistor 7 can be attached directly to the steel plate 3. Wiring can be done without any problems.

In addition, when a control element such as a thyristor is used instead of the transistor 7, there is a mounting structure in which the electrode pin does not penetrate the steel plate 3, so if it is installed to obtain the effect of heat dissipation, the electric motor 1
It is not always necessary to provide the recess 8 on the side for wiring.

As explained above, according to the present invention, the control unit and the electric motor are integrated using an L-shaped steel plate, and the other side of the steel plate is used as the leg, and the high temperature parts of the control unit are attached to one side, so the control unit It has great practical value as it provides stable operation such as heat dissipation and facilitates assembly.

[Brief explanation of the drawing]

The figure is a vertical cross-sectional view of a main part of an embodiment of the present invention. 1... Electric motor, 2... Pump section, 3... Steel plate,
7...Transistor.

Claims (1)

[Scope of utility model registration request] A pump part is provided on one side of the electric motor, one side of an L-shaped steel plate is fixed to the other side, the other side of this steel plate is used as a leg part, a control part is attached to one side, and the control part is mounted on one side. A pump characterized in that a high temperature component is directly attached to the one side.