Fuel pump assembly with novel oil level sensor mounting structure

Abstract

The utility model provides a fuel pump assembly with a novel mounting structure for an oil level sensor, which comprises a bottom shell, a pump core unit arranged in the bottom shell and a clamping groove arranged on the outer wall of the bottom shell; an oil nozzle is arranged at the top of the upper cover, a corrugated pipe communicated with the pump core unit is arranged at one end of the oil nozzle, and a supporting rod is arranged between the upper cover and the bottom shell; and the oil level unit comprises a clamping block clamped in the clamping groove, a support is clamped on the clamping block, and a floater rod is arranged on the support. According to the fuel pump assembly with the novel installation structure for the oil level sensor, the oil level unit is utilized, the clamping block is clamped into the clamping groove through the clamping groove formed in one side of the bottom shell so that the floater on the floater rod can be fixed, when different oil tanks are replaced, the clamping block can be turned over by 90 degrees to be clamped into the clamping groove, the placing position of the floater is adjusted, and therefore the oil level sensor can be replaced conveniently. And the applicability of the oil level sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel pumps, in particular to a fuel pump assembly with a novel installation structure for an oil level sensor. Background Art

[0002] The fuel pump is usually installed in the fuel tank, with the bottom of the fuel suction port placed in the fuel tank. The pump core pressurizes the fuel liquid to keep a certain pressure and divert it from the fuel distribution pipe to ensure continuous fuel supply to the fuel injector. At the same time, the oil level sensor controls the oil level. The traditional oil level sensor is fixed on one side of the fuel pump in an integrated manner, which is not easy to remove and adjust. For different specifications of fuel tanks, the built-in space is different, so the sensor needs to be adjusted to adapt to the fuel tank, so the oil level sensor needs to be redesigned and processed, which greatly increases the types of fuel pumps and production costs. Utility Model Content

[0003] The utility model aims to solve the above-mentioned problems in the prior art and the problem that the oil level sensor is difficult to remove and adjust.

[0004] In order to achieve the above-mentioned purpose, the utility model can be implemented through the following technical solutions: a fuel pump assembly with a new installation structure of an oil level sensor, comprising:

[0005] A bottom shell, wherein a pump core unit is arranged inside the bottom shell, and a card slot is opened on the outer wall of the bottom shell;

[0006] An upper cover, the top of which is provided with an oil nozzle, one end of which is provided with a bellows connected to the pump core unit, and a support rod is provided between the upper cover and the bottom shell;

[0007] The oil level unit comprises a clamping block clamped in the clamping groove, a bracket clamped on the clamping block, a float rod is arranged on the bracket, and a float is fixedly connected to one end of the float rod.

[0008] In the embodiment of the utility model, a square block is arranged on the card block, the square block is clamped in the card slot, and a protruding block matching with the card block is symmetrically arranged on the bottom shell.

[0009] In the embodiment of the utility model, the clamping block has a groove, and the bracket is provided with a supporting block clamped in the groove.

[0010] In the embodiment of the utility model, inclined blocks cooperating with the clamping blocks are arranged on both sides of the supporting block.

[0011] In the embodiment of the utility model, a socket is provided on the upper cover, and the socket is electrically connected to the pump core unit.

[0012] In an embodiment of the utility model, the pump core unit includes a filter element, a pump body and a support cover. The pump body is provided with an oil suction port, and the pump body is connected with the pump core. The pump core is provided with an oil outlet connected with a bellows. The filter element and the pump body are both arranged in the support cover, and the support cover cooperates with the bottom shell.

[0013] In the embodiment of the utility model, an oil unloading valve is arranged on the oil outlet.

[0014] In the embodiment of the utility model, a buckle is provided on the support cover, and the buckle is engaged with the bottom shell.

[0015] Compared with the prior art, the advantages of the present application are: the oil level unit is utilized, and a card block is inserted into the card slot through a card slot opened on one side of the bottom shell to fix the float on the float rod. When replacing a different oil tank, the card block can be flipped 90° and inserted into the card slot to adjust the placement of the float, thereby improving the applicability of the oil level sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the fuel pump;

[0017] Figure 2 It is the exploded structure of the oil level unit and the partial enlarged schematic diagram;

[0018] Figure 3 It is a schematic diagram of the exploded structure of the parts of the oil level unit;

[0019] Figure 4 This is a schematic diagram of the bottom shell disassembly;

[0020] Figure 5 It is a schematic diagram of the internal parts structure of the pump core unit;

[0021] Figure 6 is relative to Figure 1 Schematic diagram of the oil level unit flipped 90°.

[0022] Description of reference numerals:

[0023] 1. Upper cover; 11. Oil nozzle; 12. Socket; 2. Bellows; 3. Pump core unit; 30. Filter element; 301. Oil unloading valve; 302. Oil outlet; 31. Pump body; 311. Oil suction port; 32. Support cover; 4. Bottom shell; 41. Slot; 42. Raised block; 5. Oil level unit; 50. Float rod; 51. Float; 52. Block; 521. Square block; 522. Groove; 53. Bracket; 531. Tilted block; 532. Support block; 6. Support rod. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0025] like Figure 1-6 As shown, a fuel pump assembly with a novel installation structure of an oil level sensor includes:

[0026] A bottom shell 4, in which the pump core unit 3 is arranged, and a slot 41 is opened on the outer wall of the bottom shell 4;

[0027] The upper cover 1 has an oil nozzle 11 at its top, one end of the oil nozzle 11 is provided with a bellows 2 connected to the pump core unit 3, and a support rod 6 is provided between the upper cover 1 and the bottom shell 4;

[0028] The oil level unit 5 comprises a clamping block 52 clamped in the clamping groove 41 , a bracket 53 clamped on the clamping block 52 , a float rod 50 is arranged on the bracket 53 , and a float 51 is fixedly connected to one end of the float rod 50 .

[0029] Specifically, a pump core unit 3 is arranged inside the bottom shell 4, and a slot 41 is opened on the outer wall of the bottom shell 4, a nozzle 11 is arranged on the top of the upper cover 1, and a bellows 2 connected to the pump core unit 3 is arranged at one end of the nozzle 11, a support rod 6 is arranged between the upper cover 1 and the bottom shell 4, the oil level unit 5 includes a block 52 clamped in the slot 41, a bracket 53 is clamped on the block 52, a float rod 50 is arranged on the bracket 53, and a float 51 is fixedly connected to one end of the float rod 50, a sealing ring is arranged at the nozzle 11 and the bellows 2, and a sealing ring is arranged at the bellows 2 and the pump core unit 3, so as to improve the sealing between the two. When the fuel pump is running, oil is extracted through the pump core unit 3 and a certain pressure is applied to make the oil flow to the nozzle 11 through the bellows 2, and the fuel equipment is continuously supplied with oil by the nozzle 11, and the float 51 on one side of the bottom shell 4 is used to detect the height of the oil level, and the float 51 can be in four states (such as Figure 1 and Figure 6 As shown in the figure, according to the capacity of the oil tank, the flip block 52 is snapped into the slot 41 to adjust the position of the float 51, thereby improving the adaptability of the device.

[0030] As an embodiment further provided by the present invention, a square block 521 is provided on the card block 52, and the square block 521 is engaged in the card slot 41. The bottom shell 4 is symmetrically provided with raised blocks 42 that cooperate with the card block 52. The square block 521 is a square structure with equal length and width. When the oil level needs to be adjusted, the card block 52 can be flipped 90° and the square block 521 is engaged in the card slot 41, and the raised block 42 plays the role of supporting the card block 52.

[0031] As an embodiment further provided by the present invention, the block 52 has a groove 522, and the bracket 53 is provided with a support block 532 which is engaged in the groove 522. The bracket 53 is installed as follows: hold the bracket 53 and put the support block 532 into the groove 522, and then slide downward to make the block 52 and the bracket 53 fit together.

[0032] As an embodiment further provided by the present invention, tilting blocks 531 cooperating with the clamping block 52 are provided on both sides of the support block 532. The tilting blocks 531 are arranged on the bracket 53 to improve the tightness of the fit between the bracket 53 and the clamping block 52, so that the oil level unit 5 is more stable during operation.

[0033] As an embodiment further provided by the present invention, a socket 12 is provided on the upper cover 1 , and the socket 12 is electrically connected to the pump core unit 3 . The socket 12 can be externally connected to a plug to supply power to the pump body 31 and output an electrical signal to control the switch of the pump body 31 .

[0034] As an embodiment further provided by the present invention, the pump core unit 3 includes a filter element 30, a pump body 31 and a support cover 32. The pump body 31 is provided with an oil suction port 311, and the pump body 31 is communicated with the pump core. The pump core is provided with an oil outlet 302 communicated with the bellows 2. The filter element 30 and the pump body 31 are both arranged in the support cover 32, and the support cover 32 cooperates with the bottom shell 4. When the fuel pump is working, the pump body 31 operates to control the oil in the fuel tank to be sucked in from the oil suction port 311. A filter is also provided at the oil suction port 311 to reduce impurities entering the pump body 31. The oil is secondary filtered from the filter element 30 under the pressurization of the pump body 31, and enters the bellows 2 from the oil outlet 302 and flows to the oil nozzle 11.

[0035] As an embodiment further provided by the present invention, an oil unloading valve 301 is provided on the oil outlet 302. The oil unloading valve 301 is provided at the oil outlet 302. When the oil pressure is too high, a certain amount of fuel leaks through the oil unloading valve 301 to control the oil pressure of the oil.

[0036] As an embodiment further provided by the present invention, a buckle is provided on the support cover 32, and the buckle is engaged with the bottom shell 4. At least two buckles are provided, and multiple groups of buckles cooperate with the bottom shell 4 to improve the sealing performance between the support cover 32 and the bottom shell 4.

[0037] Working principle: First, according to the capacity space in the fuel tank, the card block 52 is flipped and inserted into the bottom shell 4, so as to adjust the placement angle of the float 51 on the bracket 53 to adapt to a certain fuel tank. The socket 12 is connected to an external power supply and an electrical signal to control the operation of the pump body 31 so that the oil enters through the oil suction port 311, and flows out from the filter element 30 to the oil outlet 302 under a certain pressure to filter impurities in the oil. When the oil pressure is too high, the oil unloading valve 301 will release a certain amount of oil to reduce the oil pressure, so that the oil with a certain oil pressure flows from the bellows 2 along the oil outlet 302 into the nozzle 11. The fuel unit is continuously supplied by the nozzle 11, and the oil is continuously consumed and detected by the float 51 on the oil level unit 5. The float 51 detects the height of the oil level. When the oil reaches a certain oil level, the float 51 sends a signal to remind the fuel shortage or full load state.

[0038] The technical solution of the above utility model provides a solution that is significantly different from the prior art to address the technical problem that the prior art solution is too single. The parts not involved in the technical solution of this application are the same as the prior art or can be implemented by using the prior art and will not be described in detail.

[0039] The technical solutions in the above embodiments have clearly and completely described the contents of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A fuel pump assembly with a new installation structure for an oil level sensor, characterized in that: include: A bottom shell, wherein a pump core unit is arranged inside the bottom shell, and a card slot is opened on the outer wall of the bottom shell; An upper cover, the top of which is provided with an oil nozzle, one end of which is provided with a bellows connected to the pump core unit, and a support rod is provided between the upper cover and the bottom shell; The oil level unit comprises a clamping block clamped in the clamping slot, a bracket clamped on the clamping block, a float rod is arranged on the bracket, and a float is fixedly connected to one end of the float rod.

2. A fuel pump assembly with a novel installation structure for an oil level sensor according to claim 1, characterized in that: The clamping block is provided with a square block, the square block is clamped in the clamping slot, and the bottom shell is symmetrically provided with protruding blocks matched with the clamping block.

3. The fuel pump assembly with a novel installation structure for an oil level sensor according to claim 1 is characterized in that: The clamping block has a groove, and the bracket is provided with a supporting block clamped in the groove.

4. A fuel pump assembly with a novel installation structure for an oil level sensor according to claim 3, characterized in that: Inclined blocks matching with the clamping blocks are arranged on both sides of the supporting block.

5. The fuel pump assembly with a novel installation structure for an oil level sensor according to claim 1 is characterized in that: The upper cover is provided with a socket, and the socket is electrically connected to the pump core unit.

6. A fuel pump assembly with a novel installation structure for an oil level sensor according to claim 1, characterized in that: The pump core unit includes a filter element, a pump body and a support cover. The pump body is provided with an oil suction port, and the pump body is connected with the pump core. The pump core is provided with an oil outlet connected with a bellows. The filter element and the pump body are both arranged in the support cover, and the support cover cooperates with the bottom shell.

7. A fuel pump assembly with a novel installation structure for an oil level sensor according to claim 6, characterized in that: An oil unloading valve is arranged on the oil outlet.

8. The fuel pump assembly with a novel installation structure for an oil level sensor according to claim 6 is characterized in that: The support cover is provided with a buckle, and the buckle is engaged with the bottom shell.

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