Brush gasoline pump

Abstract

The utility model provides a gasoline pump with a brush, which is characterized by comprising a brush carrier assembly and a brush shaft assembly, the end cover is arranged on the brush carrier assembly in a sleeving manner; the armature assembly is located below the brush carrier assembly and the upper end of the armature assembly is connected with the brush carrier assembly; a shell, an impeller and a rear cover are sequentially installed below the armature assembly, the armature assembly is sleeved with a magnetic shoe, the magnetic shoe is sleeved with a steel shell, and the lower portion of the end cover is connected with an aluminum shell wrapping the brush carrier assembly, the armature assembly, the shell, the impeller and the rear cover. The armature assembly and the shell are attached to the steel shell through the outer aluminum shell, and the impeller, the rear cover and the like are wrapped, so that the overall assembly structure is compact, and the assembly requirement is reduced.

Description

Technical Field

[0001] The utility model relates to a gasoline pump with a brush. Background Art

[0002] Fuel pump is a professional term in the auto parts industry. It is one of the basic components of the fuel injection system of electronic fuel injection vehicles. It is located inside the vehicle's fuel tank. The fuel pump works when starting and the engine is running. If the engine is stopped and the ignition switch is still on, the HFM-SFI control module turns off the power supply of the fuel pump to avoid accidental ignition.

[0003] Under existing assembly conditions, the one-way valves of traditional gasoline pumps are mostly installed externally, and their structures are mostly complex, making them difficult to assemble. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned problems in the prior art and to propose a brushed gasoline pump, which includes an armature assembly and a housing through a steel shell, and then abuts the steel shell through an external aluminum shell to wrap the impeller, rear cover, etc., so that the overall assembly structure is relatively compact and the assembly requirements are reduced.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a brushed gasoline pump, characterized in that it includes:

[0006] Brush holder assembly;

[0007] An end cover is sleeved on the brush holder assembly;

[0008] An armature assembly is located below the brush holder assembly and an upper end of the armature assembly is connected to the brush holder assembly;

[0009] A casing, an impeller and a rear cover are sequentially installed below the armature assembly, a magnetic tile is externally sleeved on the armature assembly, a steel casing is externally sleeved on the magnetic tile, and an aluminum casing that wraps the brush holder assembly, the armature assembly, the casing, the impeller and the rear cover is connected below the end cover.

[0010] Furthermore, the brush holder assembly includes a holder cover, a carbon brush spring and a spring fixing frame, the holder cover is provided with a mounting seat, the carbon brush spring is arranged in the mounting seat, and the spring fixing frame cover is arranged on the mounting seat and connected to the carbon brush spring.

[0011] Furthermore, the housing, impeller and rear cover are all sleeved on the output end of the armature assembly.

[0012] Furthermore, the end cover has a built-in one-way valve.

[0013] Furthermore, the inner wall of the aluminum shell and the steel shell are in contact with each other, and the steel shell wraps and fixes the armature assembly and the magnetic tile.

[0014] Furthermore, the spring fixing frame is made of plastic.

[0015] Compared with the prior art, the advantages of the present application are as follows: the armature assembly and the housing are included by a steel outer shell, and then the impeller, the rear cover, etc. are wrapped by an external aluminum outer shell abutting against the steel outer shell, so that the overall assembly structure is relatively compact and the assembly requirements are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the petrol pump;

[0017] Figure 2 is a schematic cross-sectional view of a gasoline pump;

[0018] Figure 3 This is a schematic diagram of a gasoline pump without the aluminum and steel casings;

[0019] Figure 4 It is a schematic diagram of the bracket cover;

[0020] Figure 5 It is a schematic diagram of the interior of the end cap;

[0021] In the figure, 1, end cover; 101, one-way valve; 11, bracket cover; 111, carbon brush spring; 112, spring fixing frame; 113, mounting seat; 2, aluminum shell; 3, steel shell; 4, armature assembly; 5, magnetic tile; 6, housing; 7, impeller; 8, rear cover. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0023] like Figure 1-5 As shown, a brushed gasoline pump is characterized in that it comprises:

[0024] Brush holder assembly;

[0025] An end cover 1 is sleeved on the brush holder assembly;

[0026] An armature assembly 4, which is located below the brush holder assembly and has an upper end connected to the brush holder assembly;

[0027] A casing 6, an impeller 7 and a back cover 8 are sequentially installed below the armature assembly 4, a magnetic tile 5 is externally sleeved on the armature assembly 4, a steel casing 3 is externally sleeved on the magnetic tile 5, and an aluminum casing 2 is connected below the end cover 1 to wrap the brush holder assembly, the armature assembly 4, the casing 6, the impeller 7 and the back cover 8.

[0028] The armature assembly 4 is abutted against the magnetic tile 5, and the shell 6, impeller 7 and back cover 8 are tightly connected to the lower end of the armature assembly 4. The steel shell 3 includes the magnetic tile 5 and the shell 6, and the aluminum shell 2 wraps the steel shell 3, impeller 7 and back cover 8. The internal space is compact and stable, the spacing between each part is small, the assembly difficulty is small, and the steel shell 3 provides protection to the interior.

[0029] Furthermore, the brush holder assembly includes a holder cover 11 , a carbon brush spring 111 and a spring fixing frame 112 . The holder cover 11 has a mounting seat 113 . The carbon brush spring 111 is disposed in the mounting seat 113 . The spring fixing frame 112 is covered on the mounting seat 113 and connected to the carbon brush spring 111 .

[0030] Furthermore, the housing 6 , the impeller 7 and the rear cover 8 are all sleeved on the output end of the armature assembly 4 .

[0031] Furthermore, the end cover 1 has a built-in one-way valve 101 .

[0032] Furthermore, the inner wall of the aluminum shell 2 and the steel shell 3 are in contact with each other, and the steel shell 3 wraps and fixes the armature assembly 4 and the magnetic tile 5.

[0033] Furthermore, the spring fixing frame 112 is made of plastic.

[0034] In the present application, the two same inserts in the prior art are replaced by a carbon brush spring 111 fixed on the mounting seat 113 of the bracket cover 11. Firstly, the production cost is reduced, and secondly, the small volume assembly requirement is solved. At the same time, the spring fixing frame 112 is made of plastic material, which further solves the problem of production and manufacturing costs. At the same time, the armature assembly 4, the magnetic tile 5, and the shell 6, the impeller 7 and the back cover 8 located below the armature assembly 4 are all tightly wrapped by the steel shell 3 or the aluminum shell 2, the internal structure is more compact, the assembly difficulty is relatively small, and the internal structure fixing effect is better after assembly.

[0035] 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.

[0036] 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 brushed gasoline pump, characterized in that it include: Brush holder assembly; An end cover is sleeved on the brush holder assembly, and a one-way valve is built in the end cover; An armature assembly is located below the brush holder assembly and an upper end of the armature assembly is connected to the brush holder assembly; A casing, an impeller and a rear cover are sequentially installed below the armature assembly, a magnetic tile is externally sleeved on the armature assembly, a steel casing is externally sleeved on the magnetic tile, and an aluminum casing that wraps the brush holder assembly, the armature assembly, the casing, the impeller and the rear cover is connected below the end cover.

2. A brushed gasoline pump according to claim 1, characterized in that: The brush holder assembly comprises a holder cover, a carbon brush spring and a spring fixing frame. The holder cover is provided with a mounting seat, the carbon brush spring is arranged in the mounting seat, and the spring fixing frame cover is arranged on the mounting seat and connected to the carbon brush spring.

3. A brushed gasoline pump according to claim 1, characterized in that: The housing, the impeller and the rear cover are all sleeved on the output end of the armature assembly.

4. A brushed gasoline pump according to claim 1, characterized in that: The inner wall of the aluminum shell and the steel shell are in contact with each other, and the steel shell wraps and fixes the armature assembly and the magnetic tile.

5. A brushed gasoline pump according to claim 2, characterized in that: The spring fixing frame is made of plastic.

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