JPS6215515Y2 - - Google Patents

Description

[Detailed explanation of the device] This device stores various liquids in liquid containers (for example, 18
This relates to a motor pump device for suctioning water from a small tin can.The main feature of this device is that a recess is formed on the outer periphery of the motor pump storage case provided at the tip of the suction hose, and protrusions are formed on the inner walls on both sides of the recess. The liquid level sensing element is sandwiched and removably held in the recess by the provided elastic protrusions, and the large diameter part of the liquid level sensing element is brought into contact with the end of the elastic protrusion, making it possible to attach the liquid level sensing element. It is extremely simple and easy to replace in case of failure.

For motor pump devices with a motor pump installed at the end of the suction hose, it is convenient to install a liquid level detection element near the bottom of the container to notify when the amount of liquid in the container is running low. However, because there is a motor pump storage case with a large outer diameter near the bottom of the container, it is technically quite difficult to install the liquid level detection element in this area so that it faces the outside and does not protrude. It was hot.

The purpose of this invention is to provide a motor pump device in which the liquid level detection element does not protrude from the outer periphery of the motor pump storage case and can be easily attached.

An embodiment of this invention will be described with reference to the drawings.

Fig. 1 shows its external appearance.A main body 1 that houses a dry cell battery is provided with a discharge port 2 and a motor pump drive switch 3.It also informs when the liquid in the container is running low (e.g. An alarm means (not shown) such as a buzzer or indicator light is provided.

A motor pump storage case 5 is integrally formed at the lower end of the suction hose 4 protruding from the lower surface of the main body 1, and the motor pump stored in the case 5 draws liquid from the suction port 6 through the discharge port 2 at the top. It's starting to spit out. Note that three protrusions 7 are provided around the suction port 6 to prevent the suction port 6 from being blocked by the bottom surface of the container.

As shown in FIG. 2, a vertically long recess 8 is formed on the outside of the motor pump housing case 5, and a liquid level detection element 9 is supported in the recess 8.

The liquid level detection element 9 is elastically held by elastic protrusions 8a that are protruded from the inner walls on both sides of the recess 8, and the elastic protrusions 8a are held by strongly pulling the elastic protrusions 8a.
It can be removed by passing it between a. Similarly,
When assembling, you can securely fix it by simply pressing it firmly and snapping it into place.

The liquid level detection element 9, as shown in FIG.
A conical prism 9 is attached to the lower end of the transparent cylindrical member.
a is integrally formed, and a flange-like large diameter portion 9 is provided at the upper end thereof.
b, and when attached to the motor pump storage case 5, the large diameter portion is brought into contact with the upper end of the elastic protrusion 8a to be positioned at a predetermined height.

As shown in FIG. 4, the liquid level detection element 9 includes a light emitting element 9c and a light receiving element 9d sealed inside a cylindrical member, and emits light when the boundary surface of the prism 9a is in the air. The light emitted from the element 9c is totally reflected twice at the boundary surface and reaches the light receiving element 9d, but when the boundary surface is in the liquid, it does not pass through the boundary surface and return to the light receiving element, so this change is detected. This is adapted to drive the notification means provided in the main body 1.

As explained above, in the motor pump device of this invention, a recess is formed on the outer periphery of the motor pump storage case provided at the tip of the suction hose, and a liquid level detection element is detected by elastic protrusions protruding from the inner walls on both sides of the recess. By holding the liquid level detecting element removably in the recess while holding it in place, and by making the large diameter part of the liquid level detecting element contact the end of the elastic protrusion, the liquid level detecting element can be installed extremely easily and securely in the correct position. It can be easily attached and replaced in case of failure.

[Brief explanation of drawings]

Fig. 1...A perspective view of the entire motor pump device which is an embodiment of this invention, Fig. 2...A front view of the part where the liquid level detection element is attached, Fig. 3...A perspective view of the liquid level detection element. FIG. 4...A cross-sectional view of the liquid level detection element. 1...Body, 2...Discharge port, 3...Motor pump drive switch, 4...Suction hose, 5...Motor pump storage case, 6...Suction port, 7...
Protrusion, 8... Recess, 8a... Elastic protrusion, 9... Liquid level detection element, 9b... Large diameter portion.

Claims (1)

[Scope of utility model registration request] Equipped with a suction hose with a motor pump storage case at the tip and a discharge port that communicates with the suction hose.
Elastic protrusions are provided on the inner walls on both sides of the recess formed on the outer periphery of the motor pump storage case, and a liquid level detection element having a large diameter portion for positioning can be inserted into and removed from the recess by being held between the two elastic protrusions. A motor pump device characterized in that the large diameter portion of the liquid level detection element is held in contact with the end of the elastic protrusion.