Heater and water level sensor combined structure of fuel filter

Abstract

The utility model is applicable to the technical field of fuel filters, in particular to a heater and water level sensor combined structure of a fuel filter, which comprises a heater shell, a connector connector is arranged on the outer side of the heater shell, and a U-shaped heat conducting plate is connected to the outer side of the heater shell. And a heater terminal and a water level sensor terminal are arranged on the surface of the connector assembly joint. According to the utility model, the heater housing, the connector assembly joint, the heater terminal, the water level sensor terminal, the U-shaped heat conduction plate, the epoxy resin glue, the temperature control switch, the water meeting electrode, the first circuit board, the second circuit board, the connecting lead and the PTC heating sheet are arranged, so that the functions of the heater and the water level sensor can be integrated on the premise that one housing is shared; in addition, the fuel filter shares one connector interface, so that the cost can be reduced, lines of the whole vehicle are attractive, the occupied space can be reduced, and the fuel filter is convenient to install, maintain and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel filters, in particular to a combined structure of a heater and a water level sensor of a fuel filter. Background Art

[0002] At present, the heater and water level sensor commonly used in the market are two independent components, which are respectively assembled to two different positions on the filter, while the vehicle wiring harness assembly needs to be separated into two matching corresponding wiring harnesses and connector interfaces, which not only leads to cumbersome assembly procedures, many wiring harness and connector interfaces, and high costs, but also many wiring harnesses are entangled together, which is not beautiful, and it is difficult to inspect and repair the heater and water level sensor, and it is not convenient to disassemble and assemble during maintenance;

[0003] In addition, since the heater and the water level sensor are separated, for some models with compact engines, the space left for the filter is very small, and it is very difficult to install the filter with two independent components. In this regard, the utility model provides a combined structure of a heater and a water level sensor for a fuel filter to solve the above technical problems. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a combined structure of a heater and a water level sensor of a fuel filter, aiming to solve the technical problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fuel filter heater and water level sensor combination structure, comprising a heater housing, a connector joint is arranged on the outer side of the heater housing, a U-shaped heat conducting plate is connected to the outer side of the heater housing, and a heater terminal and a water level sensor terminal are arranged on the surface of the connector joint;

[0007] A first installation cavity is provided inside the heater housing, and a PTC heating sheet is installed inside the first installation cavity, and a connecting wire is connected to the outside of the PTC heating sheet;

[0008] A second installation cavity is provided inside the heater housing, and a first circuit board, a second circuit board and a water-contacting electrode are arranged inside the second installation cavity. A temperature control switch is installed inside the heater housing.

[0009] Furthermore, the number of the heater terminal and the number of the water level sensor terminal are both two.

[0010] Furthermore, one end of the connecting wire away from the PTC heating plate is connected to the second circuit board, the second circuit board is electrically connected to the temperature control switch, and the second circuit board is electrically connected to the heater terminal.

[0011] Furthermore, one end of the heater housing is opened, and epoxy resin glue is sealed inside the opening of the heater housing, and the temperature sensing surface of the temperature control switch is exposed on the surface of the epoxy resin glue.

[0012] Furthermore, the first circuit board is electrically connected to the water-contacting electrode, and a portion of the water-contacting electrode away from the first circuit board protrudes from the outer surface of the heater housing, and the water-contacting electrode is electrically connected to the water level sensor terminal.

[0013] The utility model provides a fuel filter heater and water level sensor combination structure, which has the following beneficial effects:

[0014] By arranging a heater housing, a connector joint, a heater terminal, a water level sensor terminal, a U-shaped heat conducting plate, epoxy resin glue, a temperature control switch, a water-contacting electrode, a first circuit board, a second circuit board, a connecting wire and a PTC heating plate, the heater function and the water level sensor function can be integrated into one body under the premise of sharing a housing, so that the functions are highly concentrated. In addition, the fuel filter shares a connector interface, which can not only reduce costs and make the whole vehicle circuit beautiful, but also reduce occupied space and facilitate installation, maintenance and servicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a structural schematic diagram of a combined structure of a heater and a water level sensor of a fuel filter.

[0016] Figure 2 The present invention is a schematic diagram of the partial structure on the back side of a combined structure of a heater and a water level sensor of a fuel filter.

[0017] Figure 3 The present invention is a schematic diagram of the top view of the local structure of a combined structure of a heater and a water level sensor of a fuel filter.

[0018] Figure 4 A combined structure of a fuel filter heater and a water level sensor Figure 2 AA section view.

[0019] In the figure: 1. Heater housing; 2. Connector joint; 3. U-shaped heat conducting plate; 4. Heater terminal; 5. Water level sensor terminal; 6. Temperature control switch; 7. Water-contacting electrode; 8. First circuit board; 9. Second circuit board; 10. Connecting wire; 11. PTC heating plate; 12. Epoxy resin glue. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0022] like Figure 1-Figure 4 As shown, a fuel filter heater and water level sensor combination structure provided by an embodiment of the utility model comprises a heater housing 1, a connector joint 2 is arranged on the outer side of the heater housing 1, and a U-shaped heat conducting plate 3 is connected to the outer side of the heater housing 1, a heater terminal 4 and a water level sensor terminal 5 are arranged on the surface of the connector joint 2, and the number of the heater terminal 4 and the water level sensor terminal 5 are both two;

[0023] A first installation cavity is provided inside the heater housing 1, and a PTC heating plate 11 is installed inside the first installation cavity, and a connecting wire 10 is connected to the outside of the PTC heating plate 11;

[0024] A second installation cavity is provided inside the heater housing 1, and a first circuit board 8, a second circuit board 9 and a water-contacting electrode 7 are arranged inside the second installation cavity. A temperature control switch 6 is installed inside the heater housing 1, and one end of the connecting wire 10 away from the PTC heating plate 11 is connected to the second circuit board 9, the second circuit board 9 is electrically connected to the temperature control switch 6, the second circuit board 9 is electrically connected to the heater terminal 4, the first circuit board 8 is electrically connected to the water-contacting electrode 7, and a part of the water-contacting electrode 7 away from the first circuit board 8 protrudes from the outer surface of the heater housing 1, and the water-contacting electrode 7 is electrically connected to the water level sensor terminal 5;

[0025] One end of the heater housing 1 is opened, and epoxy resin glue 12 is sealed inside the opening of the heater housing 1 , and the temperature sensing surface of the temperature control switch 6 is exposed on the surface of the epoxy resin glue 12 .

[0026] In one embodiment of the present invention, the heater terminal 4 and the water level sensor terminal 5 are installed in a connector joint 2 to form a whole, so that the whole has both the heater and water level sensor functions.

[0027] The working principle of the fuel filter is as follows: the heater terminal 4 is connected to an external power source and energized, and the PTC heating sheet 11 is energized and heated, so that the PTC heating sheet 11 transfers heat to the U-shaped heat conducting plate 3, and in this process, the PTC heating sheet 11 can be controlled by the temperature control switch 6 to cut off the power and stop heating after being energized and heated to a certain temperature;

[0028] The water level sensor terminal 5 is connected to an external power source and powered on, and is controlled by the first circuit board 8 to provide feedback on the alarm function of the water-contacting electrode 7 in the air (diesel) or water.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined structure of a fuel filter heater and a water level sensor, comprising a heater housing (1), characterized in that: A connector joint (2) is arranged on the outside of the heater housing (1), and a U-shaped heat conducting plate (3) is connected to the outside of the heater housing (1), and a heater terminal (4) and a water level sensor terminal (5) are arranged on the surface of the connector joint (2); A first installation cavity is provided inside the heater housing (1), a PTC heating plate (11) is installed inside the first installation cavity, and a connecting wire (10) is connected to the outside of the PTC heating plate (11); A second installation cavity is provided inside the heater housing (1), and a first circuit board (8), a second circuit board (9) and a water-contacting electrode (7) are arranged inside the second installation cavity. A temperature control switch (6) is installed inside the heater housing (1).

2. The combined structure of a fuel filter heater and a water level sensor according to claim 1, characterized in that: The number of the heater terminal (4) and the number of the water level sensor terminal (5) are both two.

3. The combined structure of a fuel filter heater and a water level sensor according to claim 1, characterized in that: One end of the connecting wire (10) away from the PTC heating plate (11) is connected to the second circuit board (9), the second circuit board (9) is electrically connected to the temperature control switch (6), and the second circuit board (9) is electrically connected to the heater terminal (4).

4. The combined structure of a fuel filter heater and a water level sensor according to claim 3, characterized in that: One end of the heater housing (1) is open, and epoxy resin glue (12) is sealed inside the opening of the heater housing (1), and the temperature sensing surface of the temperature control switch (6) is exposed on the surface of the epoxy resin glue (12).

5. The combined structure of a fuel filter heater and a water level sensor according to claim 1, characterized in that: The first circuit board (8) is electrically connected to the water-contacting electrode (7), and a partial area of ​​the water-contacting electrode (7) away from the first circuit board (8) protrudes from the outer surface of the heater housing (1), and the water-contacting electrode (7) is electrically connected to the water level sensor terminal (5).

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