An automatic oil return type single nozzle automobile electric fuel pump assembly

Abstract

The present invention discloses an automatic oil return type single-nozzle automobile electric fuel pump assembly, comprising an installation box, the inner cavity of the installation box is fixedly connected with a driving motor, and the output shaft of the driving motor is fixedly connected with a threaded rod. The present invention cooperates with a driving motor, a threaded rod, a threaded sleeve, a limiting rod, a protective sleeve, a shock absorbing spring, a buffer sleeve, a worm, a worm wheel, a rotating shaft and a fan blade. The output shaft of the driving motor drives the threaded sleeve to move through the threaded rod, and the threaded sleeve drives the baffle to move through the limiting rod, so as to clamp and fix the fuel pump assembly. The shock absorbing spring acts on the buffer sleeve, so as to facilitate buffering of the fuel pump assembly. The output shaft of the stepping motor drives the worm wheel to rotate through the worm, and the worm wheel drives the fan blade to rotate through the rotating shaft, so as to dissipate heat for the fuel pump assembly, thereby achieving a high safety effect and solving the problem of low safety of the existing device.

Description

Technical Field

[0001] The invention relates to the technical field of fuel pump assemblies, in particular to an automatic oil return type single-nozzle automobile electric fuel pump assembly. Background Art

[0002] The electric fuel pump is mainly used to provide fuel with a certain pressure for the automobile fuel injection system. At present, there are many types of automobile electric fuel pump assemblies at home and abroad. Generally speaking, there are mainly iron bracket assemblies and plastic bracket assemblies, assemblies with oil storage barrels and assemblies without oil storage barrels, assemblies with sensors and assemblies without sensors, assemblies with pressure regulating valve assemblies and without pressure regulating valve assemblies, assemblies with air valve assemblies and without air valve assemblies, etc., which are used for various types of vehicles. Although these automobile electric fuel pumps have some differences in structure, they basically work by delivering fuel through independent oil outlet nozzles and returning oil through oil return nozzles. The existing electric fuel pump assembly is not convenient to disassemble, and when the vehicle is driving, bumps are inevitable, which can easily cause damage to the electric fuel pump assembly, and the existing electric fuel pump has poor heat dissipation performance and has certain safety hazards. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic oil return type single-nozzle automobile electric fuel pump assembly, which has the advantage of high safety and solves the problem of low safety of existing devices.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic oil return type single-nozzle automobile electric fuel pump assembly, comprising an installation box, the inner cavity of the installation box is fixedly connected to a drive motor, the output shaft of the drive motor is fixedly connected to a threaded rod, the surface of the threaded rod is sleeved with a threaded sleeve, the surface of the threaded sleeve is fixedly connected to a limit rod, the right side of the installation box is fixedly connected to a mounting plate, the front of the mounting plate is fixedly connected to a positioning rod, the surface of the positioning rod is provided with a fuel pump assembly body, the other end of the limiting rod is fixedly connected to a baffle, the back of the baffle is fixedly connected to a clamping column, the surface of the fuel pump assembly body is sleeved with a protective sleeve, the inner cavity of the protective sleeve is fixedly connected to a shock-absorbing spring, the other end of the shock-absorbing spring is fixedly connected to a buffer sleeve, the left and right sides of the protective sleeve are fixedly connected to a heat sink, the inner cavity of the heat sink is fixedly connected to a stepping motor, and the output shaft of the stepping motor is fixedly connected to a worm, the surface of the worm is meshed with a worm wheel, the axis of the worm wheel is fixedly connected to a rotating shaft, and the surface of the rotating shaft is fixedly connected to a fan blade.

[0005] Preferably, the other end of the limiting rod passes through the installation box and extends to the outside of the installation box, and a limiting groove matched with the limiting rod is provided on the right side of the installation box.

[0006] Preferably, the number of the positioning rods and the number of the clamping columns are both two, and the diameter of the positioning rods is the same as the diameter of the clamping columns.

[0007] Preferably, there are two protective sleeves, and the two protective sleeves are fixedly connected by bolts.

[0008] Preferably, the shape of the buffer sleeve is semicircular, and the surfaces of the buffer sleeve and the protective sleeve are both provided with through holes.

[0009] Preferably, a rubber buffer pad is provided on one side of the buffer sleeve, and a fireproof layer is provided on the surface of the rubber buffer pad.

[0010] Preferably, the inner cavity of the heat dissipation box is fixedly connected with a partition, and one end of the rotating shaft is movably connected to one side of the partition through a bearing seat.

[0011] Preferably, a heat dissipation slot is provided on one side of the heat dissipation box, and a dustproof net is fixedly connected to the inner cavity of the heat dissipation slot.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention cooperates with a driving motor, a threaded rod, a threaded sleeve, a limiting rod, a protective sleeve, a shock-absorbing spring, a buffer sleeve, a worm, a worm wheel, a rotating shaft and fan blades. The output shaft of the driving motor drives the threaded sleeve to move through the threaded rod, and the threaded sleeve drives the baffle to move through the limiting rod, so as to clamp and fix the fuel pump assembly. The shock-absorbing spring acts on the buffer sleeve to facilitate buffering of the fuel pump assembly. The output shaft of the stepping motor drives the worm wheel to rotate through the worm, and the worm wheel drives the fan blades to rotate through the rotating shaft to dissipate heat from the fuel pump assembly, thereby achieving a high safety effect and solving the problem of low safety of the existing device.

[0014] 2. The present invention facilitates the limiting of the threaded sleeve by cooperating with the limiting rod and the limiting groove, thereby improving the safety of the device. By designing that the number of the positioning rod and the number of the clamping column are both two, the fuel pump assembly can be positioned accurately and conveniently. By designing that the two protective sleeves are fixedly connected by bolts, the disassembly and assembly of the protective sleeves are convenient. By designing a rubber buffer pad, damage to the fuel pump assembly due to excessive clamping force can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a right side cross-sectional view of the installation box structure of the present invention;

[0017] Figure 3 It is a top view of the protective sleeve structure of the present invention.

[0018] In the figure: 1. installation box; 2. drive motor; 3. threaded rod; 4. threaded sleeve; 5. limit rod; 6. installation plate; 7. positioning rod; 8. fuel pump assembly; 9. baffle; 10. clamping column; 11. protective sleeve; 12. shock-absorbing spring; 13. buffer sleeve; 14. heat sink; 15. worm; 16. worm gear; 17. rotating shaft; 18. fan blade; 19. through hole; 20. rubber buffer pad; 21. partition; 22. heat sink; 23. dust net. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-3, an automatic oil return type single-nozzle automobile electric fuel pump assembly, including an installation box 1, the inner cavity of the installation box 1 is fixedly connected with a driving motor 2, the output shaft of the driving motor 2 is fixedly connected with a threaded rod 3, the surface of the threaded rod 3 is sleeved with a threaded sleeve 4, the surface of the threaded sleeve 4 is fixedly connected with a limiting rod 5, the other end of the limiting rod 5 passes through the installation box 1 and extends to the outside of the installation box 1, and the right side of the installation box 1 is provided with a limiting groove adapted to the limiting rod 5. Through the cooperation of the limiting rod 5 and the limiting groove, it is convenient to limit the threaded sleeve 4, thereby improving the safety of the device. By designing that the number of the positioning rod 7 and the clamping column 10 are both two, it is convenient to accurately position the fuel pump assembly body 8, and by designing that two protective sleeves 11 are fixedly connected by bolts, it is convenient to position the protective sleeve 11 Disassembly and assembly, by designing a rubber buffer pad 20, damage to the fuel pump assembly 8 caused by excessive clamping force is avoided. The right side of the installation box 1 is fixedly connected with a mounting plate 6, and the front of the mounting plate 6 is fixedly connected with a positioning rod 7. The number of the positioning rod 7 and the clamping column 10 are both two. The diameter of the positioning rod 7 is the same as the diameter of the clamping column 10. The surface of the positioning rod 7 is provided with the fuel pump assembly 8. The other end of the limit rod 5 is fixedly connected with a baffle 9, and the back of the baffle 9 is fixedly connected with the clamping column 10. The surface of the fuel pump assembly 8 is provided with a protective sleeve 11. The number of the protective sleeves 11 is two, and the two protective sleeves 11 are fixedly connected by bolts. The inner cavity of the protective sleeve 11 is fixedly connected with a shock-absorbing spring 12, and the other end of the shock-absorbing spring 12 is fixedly connected with a buffer sleeve 13. The buffer The sleeve 13 is in a semicircular shape, and the surfaces of the buffer sleeve 13 and the protective sleeve 11 are both provided with through holes 19, a rubber buffer pad 20 is provided on one side of the buffer sleeve 13, and a fireproof layer is provided on the surface of the rubber buffer pad 20, and a heat sink 14 is fixedly connected to the left and right sides of the protective sleeve 11, and the inner cavity of the heat sink 14 is fixedly connected to a partition 21, and one end of the rotating shaft 17 is movably connected to one side of the partition 21 through a bearing seat, and a heat sink 22 is provided on one side of the heat sink 14, and the inner cavity of the heat sink 22 is fixedly connected to a dustproof net 23, and the inner cavity of the heat sink 14 is fixedly connected to a stepper motor, and the output shaft of the stepper motor is fixedly connected to a worm 15, and the surface of the worm 15 is meshed with a worm wheel 16, and the axis of the worm wheel 16 is fixedly connected to the rotating shaft 17, and the surface of the rotating shaft 17 is fixedly connected to the rotating shaft 17. A fan blade 18 is fixedly connected. Through the cooperation of the driving motor 2, the threaded rod 3, the threaded sleeve 4, the limiting rod 5, the protective sleeve 11, the shock-absorbing spring 12, the buffer sleeve 13, the worm 15, the worm wheel 16, the rotating shaft 17 and the fan blade 18, the output shaft of the driving motor 2 drives the threaded sleeve 4 to move through the threaded rod 3, and the threaded sleeve 4 drives the baffle 9 to move through the limiting rod 5, so that the fuel pump assembly 8 is clamped and fixed. The shock-absorbing spring 12 acts on the buffer sleeve 13 to facilitate buffering of the fuel pump assembly 8. The output shaft of the stepping motor drives the worm wheel 16 to rotate through the worm 15, and the worm wheel 16 drives the fan blade 18 to rotate through the rotating shaft 17, so as to dissipate heat for the fuel pump assembly 8, thereby achieving a high safety effect and solving the problem of low safety of the existing device.

[0021] When in use, the output shaft of the driving motor 2 drives the threaded sleeve 4 to move through the threaded rod 3, and the threaded sleeve 4 drives the baffle 9 to move through the limiting rod 5, so as to clamp and fix the fuel pump assembly 8, and the shock-absorbing spring 12 acts on the buffer sleeve 13 to facilitate buffering of the fuel pump assembly 8, and the output shaft of the stepping motor drives the worm wheel 16 to rotate through the worm 15, and the worm wheel 16 drives the fan blades 18 to rotate through the rotating shaft 17, so as to dissipate heat for the fuel pump assembly 8, thereby achieving a high safety effect.

[0022] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent. In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic oil return type single-nozzle automobile electric fuel pump assembly, comprising a mounting box (1), characterized in that: The inner cavity of the installation box (1) is fixedly connected to a driving motor (2); the output shaft of the driving motor (2) is fixedly connected to a threaded rod (3); the surface of the threaded rod (3) is sleeved with a threaded sleeve (4); the surface of the threaded sleeve (4) is fixedly connected to a limiting rod (5); the right side of the installation box (1) is fixedly connected to a mounting plate (6); the front side of the mounting plate (6) is fixedly connected to a positioning rod (7); the surface of the positioning rod (7) is provided with a fuel pump assembly (8); the other end of the limiting rod (5) is fixedly connected to a baffle (9); the back side of the baffle (9) is fixedly connected to a clamping column (10); the surface of the fuel pump assembly (8) is sleeved with a protective sleeve (11); the inner cavity of the protective sleeve (11) is fixedly connected to a damping spring (12); the other end of the damping spring (12) is fixedly connected to a buffer sleeve (13); The left and right sides of the protective sleeve (11) are fixedly connected to a heat sink (14); the inner cavity of the heat sink (14) is fixedly connected to a stepper motor, and the output shaft of the stepper motor is fixedly connected to a worm (15); the surface of the worm (15) is meshed with a worm wheel (16); the axis of the worm wheel (16) is fixedly connected to a rotating shaft (17); the surface of the rotating shaft (17) is fixedly connected to a fan blade (18); a rubber buffer pad (20) is provided on one side of the buffer sleeve (13); the surface of the rubber buffer pad (20) is provided with a fireproof layer; the inner cavity of the heat sink (14) is fixedly connected to a partition (21); one end of the rotating shaft (17) is movably connected to one side of the partition (21) through a bearing seat; a heat sink (22) is provided on one side of the heat sink (14); the inner cavity of the heat sink (22) is fixedly connected to a dustproof net (23).

2. The automatic oil return type single nozzle automobile electric fuel pump assembly according to claim 1, characterized in that: The other end of the limiting rod (5) passes through the installation box (1) and extends to the outside of the installation box (1), and a limiting groove matching the limiting rod (5) is provided on the right side of the installation box (1).

3. The automatic oil return type single nozzle automobile electric fuel pump assembly according to claim 1, characterized in that: The number of the positioning rods (7) and the number of the clamping columns (10) are both two, and the diameter of the positioning rods (7) is the same as the diameter of the clamping columns (10).

4. The automatic oil return type single nozzle automobile electric fuel pump assembly according to claim 1, characterized in that: The number of the protective sleeves (11) is two, and the two protective sleeves (11) are fixedly connected by bolts.

5. The automatic oil return type single nozzle automobile electric fuel pump assembly according to claim 1, characterized in that: The shape of the buffer sleeve (13) is semicircular, and through holes (19) are provided on the surfaces of the buffer sleeve (13) and the protective sleeve (11).

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