Combined sensor for automobile water tank

Abstract

The utility model discloses a combined sensor for automobile water tank with temperature detection function, and the installation and wiring are more convenient. Adopted technical scheme includes: insulating shell and the metal electrode of being located at the front end of insulating shell, the metal electrode rear end integratedly has the bushing, and the bushing rear end is equipped with the external thread section of protruding the insulating shell, the bushing is equipped with thermistor, and the first wire of protruding the bushing is connected on the thermistor, and the wiring terminal is connected on the external thread section through two nuts.

Description

Technical Field

[0001] This utility model belongs to the field of sensors, and in particular relates to a sensor for automotive water tanks. Background Technology

[0002] Traditional automotive radiator level sensors consist of an insulating housing and a metal electrode at the front end of the housing, with the rear end of the electrode directly soldered to a wire. The level sensor is typically mounted on the top or side of the radiator. Its level detection utilizes the conductivity of conductive ions in the liquid. When the electrode contacts the liquid, a current loop is formed between the electrode, the liquid, and the metal container (the metal container is connected to the negative terminal of the power supply). The signal processing circuit detects a voltage signal, indicating that the probe is in contact with the liquid. When the electrode is not in contact with the liquid, the detection circuit cannot detect this voltage signal, indicating that the probe is not in contact with the liquid. The disadvantages of traditional level sensors are: 1. Limited functionality, only providing level detection and lacking temperature detection capabilities; 2. Inconvenient installation and wiring. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a combined sensor for automotive water tanks that has both temperature detection function and is easier to install and wire.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: an insulating shell and a metal electrode disposed at the front end of the insulating shell, the rear end of the metal electrode is integrally formed with a bushing, and the rear end of the bushing is provided with an external threaded section extending out of the insulating shell, a thermistor is disposed inside the bushing, and a first wire extending out of the bushing is connected to the thermistor, and a terminal is connected to the external threaded section by two nuts.

[0005] The insulating outer shell is provided with external hexagonal bolts.

[0006] The insulating outer shell has an annular groove on its side wall and a conical head corresponding to the rear end of the annular groove. The external hexagonal bolt is inserted into the annular groove through the conical head.

[0007] The front end of the external thread section is embedded inside the insulating shell.

[0008] A second wire is soldered onto the terminal block.

[0009] The terminal block is L-shaped and has a wiring hole.

[0010] The advantages of this combined sensor for automotive water tanks are as follows: 1. It has both liquid level detection and temperature detection functions; 2. By integrally forming a bushing at the rear end of the metal electrode, it facilitates wiring and the installation of the thermistor, while also improving overall waterproof performance.

[0011] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the combined sensor for automotive water tanks according to this utility model; Figure 2 This is a cross-sectional view of the combined sensor for automotive water tanks according to this utility model; Figure 3 This is an exploded view of the combined sensor for automotive water tanks according to this utility model. Detailed Implementation

[0013] Reference Figure 1-3 As shown, the combined sensor for automotive water tanks of this utility model includes an insulating housing 1 and a metal electrode 2 disposed at the front end of the insulating housing 1. A bushing 3 is integrally formed at the rear end of the metal electrode 2, and the rear end of the bushing 3 has an externally threaded section 4 extending out of the insulating housing 1. A thermistor 5 is disposed inside the bushing 3, and a first lead 6 extending out of the bushing 3 is connected to the thermistor 5. After the thermistor 5 is installed at the bottom of the bushing 3, high-temperature resistant sealant (such as polyurethane waterproof sealant) is usually poured in for sealing. Terminals 8 are connected to the externally threaded section 4 via two nuts 7. The insulating housing 1 is typically made of insulating silicone.

[0014] Preferably, the insulating outer shell 1 is provided with an external hexagonal bolt 9, which is directly connected to the bolt holes on the top or side of the car water tank (metal container) through the external hexagonal bolt 9, so as to facilitate assembly. After installation, a circuit can be directly formed.

[0015] Preferably, the insulating housing 1 has an annular groove 10 on its side wall, and a tapered head 13 is provided at the rear end of the insulating housing 1 corresponding to the annular groove 10. The external hexagonal bolt 9 is forcibly inserted into the annular groove 10 through the tapered head 13. The tapered head 13 is used to guide the external hexagonal bolt 9 during installation, thereby achieving a stable connection between the external hexagonal bolt 9 and the insulating housing 1.

[0016] Preferably, the front end of the external threaded section 4 is embedded inside the insulating housing 1 to improve the robustness of the connection between the bushing 3 and the insulating housing 1.

[0017] Preferably, the terminal block 8 is L-shaped and has a wiring hole 12. A second wire 11 is soldered onto the terminal block 8. After soldering, solder fills the wiring hole 12 to improve the adhesion between the wire and the terminal block 8.

[0018] The foregoing is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A combined sensor for automotive water tanks, comprising an insulating housing (1) and a metal electrode (2) disposed at the front end of the insulating housing (1), characterized in that: The metal electrode (2) has a bushing (3) integrally formed at the rear end, and the bushing (3) has an external thread section (4) extending out of the insulating shell (1) at the rear end. The bushing (3) has a thermistor (5) inside, and the thermistor (5) has a first wire (6) extending out of the bushing (3) connected to it. The external thread section (4) has a terminal (8) connected to it by two nuts (7).

2. The combined sensor for automotive water tanks according to claim 1, characterized in that: The insulating shell (1) is provided with external hexagonal bolts (9).

3. The combined sensor for automotive water tanks according to claim 2, characterized in that: The insulating shell (1) has an annular groove (10) on its side wall and a conical head (13) at the rear end of the annular groove (10). The external hexagonal bolt (9) is inserted into the annular groove (10) through the conical head (13).

4. The combined sensor for automotive water tanks according to claim 1, characterized in that: The front end of the external thread section (4) is embedded in the insulating shell (1).

5. The combined sensor for automotive water tanks according to claim 1, characterized in that: A second wire (11) is welded onto the terminal block (8).

6. The combined sensor for automotive water tanks according to claim 1, characterized in that: The terminal block (8) is L-shaped and has a wiring hole (12).

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