Liquid storage tank probe convenient and accurate to assemble

Abstract

The utility model belongs to the technical field of liquid level detection equipment, and particularly relates to a liquid storage tank probe which is convenient and accurate to assemble, the liquid storage tank probe is in a long-strip cylindrical shape, and the liquid storage tank probe sequentially comprises an insertion hole part, an injection molding covering part and a probe insertion movable mold part from top to bottom; the injection molding covering part comprises a group of sealing ring mounting grooves and a flattening part, the probe insertion movable part comprises a bending part, a water level detection head and an injection molding positioning part, and the insertion hole part is a flat insertion hole; the injection molding positioning part is a milled flat surface, and the milled flat surface is parallel to the flat position of the jack part. A sealing ring mounting groove in the injection molding covering part can effectively guarantee waterproofness after injection molding, the injection molding positioning part is used for positioning a probe and a mold during injection molding, the injection molding positioning part is parallel to the jack part so as to guarantee that the position of the jack part after injection molding is absolutely accurate, the probe is inserted into the movable mold part, the probability that the probe is bent is greatly reduced, and the service life of the probe is prolonged. And collision between the movable die and the fixed die due to product bending is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquid level detection equipment, and specifically relates to a liquid storage tank probe that is easy to assemble and accurate. Background Technology

[0002] A water tank probe is a sensor used to detect the water level in a water tank. Its working principle is based on the conductivity of water. By applying a DC voltage control signal to the probe, the water tank acts as the cathode, and the suspended probe acts as the anode. When the water level in the tank rises and comes into contact with the anode, the water becomes conductive, forming a circuit, which causes a change in voltage on the probe.

[0003] This product is mainly used in the automotive industry. In car coolant tanks and windshield water tanks, it is necessary to detect the water level inside the tank. When the water level is below the warning line, it needs to be detected and an alarm should be triggered automatically. The detection device requires two probes. The probes need to be fixed to the water tank cap through an injection molding process. After injection molding, the probes need to be fixed in a specific position and direction and connected to the power supply and alarm device.

[0004] However, because the probe is thin and long, slight bending is unavoidable during normal production. Therefore, the probe often causes collisions between the injection mold and the mold due to bending or unstable positioning during the injection molding process. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a liquid storage tank probe that is easy to assemble and accurate, which can effectively avoid collisions between injection molds caused by probe bending or unstable positioning.

[0006] Technical solution: In order to achieve the above objectives, this utility model provides a liquid storage tank probe that is easy to assemble and accurate. The liquid storage tank probe is a long cylindrical shape, and from top to bottom it consists of an insertion hole, an injection-molded cover, and a probe insertion movable part.

[0007] The injection-molded cover includes a set of sealing ring mounting grooves and a flattened part; the probe insertion movable part includes a bending part, a water level detection head and an injection-molded positioning part; and the insertion hole part is a flat insertion port.

[0008] The injection positioning part is a milled flat surface, and the milled flat surface is parallel to the flat part of the insertion hole.

[0009] The sealing ring mounting groove on the injection-molded cover can effectively ensure waterproofing after injection molding. The injection-molded positioning part is used to position the probe and the mold during injection molding, and the injection-molded positioning part is parallel to the insertion part, thus ensuring that the position of the insertion part after injection molding is absolutely accurate.

[0010] Furthermore, the head of the socket is angled, and the socket opening is curved. The socket connects to the power supply and alarm device. The angled head and curved opening of the socket facilitate smooth insertion into the power socket.

[0011] Furthermore, an O-ring is installed in the sealing ring mounting groove, and the injection-molded cover and the probe insertion movable part are connected by a flattened part. Installing the sealing ring in the sealing ring mounting groove before injection molding effectively ensures that the water tank cover will not leak after injection molding.

[0012] Furthermore, the bending portion is located above the probe insertion movable portion, and the bending portion is a circular groove with a diameter smaller than that of the probe insertion movable portion. The circular groove design of the bending portion ensures the consistency and stability of the bending position. At the same time, the small diameter of the circular groove allows the probe to be bent manually with very little force after injection molding by fixing it with tooling.

[0013] Furthermore, the water level detection head includes a set of probes, which are connected to the water to form a circuit.

[0014] Furthermore, the length of the diameter of the probe inserted into the movable part is four-fifths of the entire probe.

[0015] Furthermore, the probe of the liquid storage tank is made of stainless steel.

[0016] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0017] 1. This utility model provides a front view of a liquid storage tank probe that is easy to assemble and accurate. It has a simple structure, eliminates the permanent magnet, and designs an injection molding positioning part. The injection molding positioning part is parallel to the insertion hole part. During injection molding, the positioning part is used for positioning to ensure the accurate position of the insertion hole part after injection molding.

[0018] 2. This utility model includes a probe insertion movable part. After being positioned by the injection positioning part during injection molding, the length of the probe inserted into the movable part that protrudes from the movable mold is relatively short, which greatly reduces the probability of bending. At the same time, it is possible to visually detect whether there is bending when the probe is inserted into the movable mold, effectively avoiding collision between the movable mold and the fixed mold due to product bending.

[0019] 3. This utility model designs a sealing ring mounting groove in the injection molding cover part. Installing the sealing ring before injection molding effectively ensures that the water tank cover will not leak after injection molding. The design of the flattened part effectively ensures that the probe will not loosen after injection molding. Attached Figure Description

[0020] Figure 1 This is a front view of a liquid storage tank probe that is easy to assemble and precise, as described in this utility model.

[0021] Figure 2 This is a side view of a liquid storage tank probe that is easy to assemble and precise, according to the present invention (with O-ring installed).

[0022] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged diagram of point B in the middle.

[0024] In the diagram: 100 - socket section;

[0025] 200 - Injection molded cover part; 201 - Sealing ring mounting groove; 202 - Flattened part;

[0026] 300 - Probe insertion movable part, 301 - Bending part, 302 - Water level detection head, 303 - Injection molding positioning part. Detailed Implementation

[0027] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] like Figure 1-4 As shown: A liquid storage tank probe that is easy to assemble and precise, characterized in that the liquid storage tank probe is a long cylindrical shape, consisting of an insertion hole 100, an injection-molded cover 200 and a probe insertion movable part 300 from top to bottom;

[0029] The injection-molded cover 200 includes a set of sealing ring mounting grooves 201 and a flattened part 202; the probe insertion movable part 300 includes a bending part 301, a water level detection head 302 and an injection-molded positioning part 303; and the insertion hole 100 is a flat insertion port.

[0030] The injection positioning part 303 is a milled flat surface, and the milled flat surface is parallel to the flat surface of the insertion hole part 100.

[0031] like Figure 3 , Figure 4 As shown, the head of the socket portion 100 is angled, and the insertion port is arc-shaped. The socket portion 100 is connected to the power supply and alarm device. The socket portion 100 is also the insertion part of the injection molding fixed mold probe, which is inserted into the mold only when the injection mold is closed.

[0032] Among them, you can refer to Figure 2 and Figure 4An O-ring is installed in the sealing ring mounting groove 201, and the injection-molded cover 200 and the probe insertion movable part 300 are connected by a flattened part 202. Installing two sealing O-rings before injection molding effectively ensures that the water tank cover will not leak after injection molding. The flattened part 202 cooperates with the plastic part after injection molding, effectively ensuring that the probe will not loosen after injection molding.

[0033] The bent portion 301 is located above the probe insertion movable portion 300. The bent portion 301 is a circular groove with a diameter smaller than that of the probe insertion movable portion 300.

[0034] Specifically, the water level detector 302 includes a set of probes, which form a circuit with the water. In the detection area, the two probes of the water level detector 302 are connected to a power source via the water's electrical conductivity. If the water level is insufficient, the probes will not conduct electricity, and the power source will not be connected. The alarm device is set to sound an alarm when the power supply is interrupted.

[0035] Furthermore, the length of the diameter of the probe inserted into the movable part 300 is four-fifths of the entire probe. In this embodiment, the mold aperture is required to be within 0.05mm larger than the probe diameter. During injection molding, the probe is first installed into the movable mold and positioned by the injection positioning part 303. This results in a shorter portion of the probe protruding from the movable mold, greatly reducing the probability of bending. Even if the product is bent, it can be detected when the probe is installed into the movable mold, effectively preventing the movable mold and the fixed mold from colliding due to product bending.

[0036] In addition, the probe of the liquid storage tank is made of stainless steel. Stainless steel has excellent corrosion resistance, a long service life, and is also malleable. Of course, it is not limited to stainless steel; other materials with similar properties can be used as substitutes.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A liquid storage tank probe which is easy to assemble and accurate, characterized in that, The liquid storage tank probe is long and cylindrical, and sequentially comprises a jack part (100), an injection covering part (200) and a probe insertion movable part (300) from top to bottom; The injection covering part (200) comprises a group of sealing ring installation grooves (201) and a flattening part (202), the probe insertion movable part (300) comprises a bending part (301), a water level detection head (302) and an injection positioning part (303), and the jack part (100) is a flat jack. The injection positioning part (303) is a milled flat surface, and the milled flat surface is parallel to the flat part of the jack part (100).

2. The liquid storage tank probe of claim 1, wherein, The head of the jack part (100) is an inclined angle, and the jack is arc-shaped, the jack part (100) is connected with a power supply and an alarm device.

3. The liquid storage tank probe of claim 1, wherein, An O-shaped sealing ring is installed in the sealing ring installation groove (201), and the injection covering part (200) and the probe insertion movable part (300) are connected through the flattening part (202).

4. The liquid storage tank probe of claim 1, wherein, The bending part (301) is located at the upper part of the probe insertion movable part (300), and the bending part (301) is a circular groove, and the diameter of the circular groove is smaller than the diameter of the probe insertion movable part (300).

5. The liquid reservoir probe of claim 1, wherein, The water level detection head (302) comprises a group of probe heads, and the probe heads form a loop with water.

6. The liquid reservoir probe of claim 1, wherein, The length of the diameter of the probe insertion movable part (300) is four-fifths of the entire probe.

7. The liquid reservoir probe of claim 1, wherein, The liquid storage tank probe is made of stainless steel.

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