Inflator pump core structure

Abstract

The utility model discloses an inflator pump machine core structure which comprises a driving motor, heat dissipation fan blades are fixedly arranged on an output shaft at one end of the driving motor, a fixing seat is fixedly arranged at the other end of the driving motor, an inner gear is rotationally arranged on the fixing seat, and the inner gear is meshed with the heat dissipation fan blades. A driving gear is fixedly arranged on an output shaft at the other end of the driving motor, the driving gear extends into the inner gear, the driving gear is in meshing transmission with inner teeth of the inner gear, and an air cylinder is arranged at one end of the fixed seat; a new gear transmission structure is designed, and the integrated design of the fixing base and the inflator is matched, so that the whole structure is more compact, the occupied space is reduced during installation, the size of the whole inflator is reduced, and the inflator is convenient to carry and use; in addition, a heat dissipation fan blade is designed at the output end of the other end of the driving motor, the heat dissipation effect on the driving motor can be achieved, and the situation that the driving motor breaks down and is damaged due to overheating is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of air pumps, and particularly relates to a structure of an air pump core. Background Technique

[0002] An air pump, also known as an air compressor, an air inflator, works by the operation of a motor. When pumping air, the valve of the communicating vessel is opened by the air pressure of the atmosphere, and the air enters the air cylinder. When inflating a tire, the valve is closed by the air pressure in the air cylinder, and the air is pushed by the piston into the tire.

[0003] Currently, the principle of the air pump core is generally to drive a piston to reciprocate in an air cylinder on one side through a motor driving a gearbox to realize the function of inflating from the inflation port. The transmission in the gearbox is all through external gears, resulting in a relatively large overall size of the gearbox and the air cylinder, occupying a large space during installation and the structure is not compact enough; and when the current motor works for a long time, a large amount of heat will be generated and it cannot dissipate heat, affecting the service life of the driving motor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a structure of an air pump core to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A structure of an air pump core, including a driving motor, a heat dissipation fan blade is fixedly arranged on the output shaft at one end of the driving motor, a fixed seat is fixedly arranged at the other end of the driving motor, an internal gear is rotatably arranged on the fixed seat, a driving gear is fixedly arranged on the output shaft at the other end of the driving motor, the driving gear extends into the internal gear, and the external teeth of the driving gear mesh with the internal teeth of the internal gear for transmission. One end of the fixed seat is provided with an air cylinder, a piston rod is movably arranged in the air cylinder, and a piston is fixedly arranged at one end of the piston rod. A fixed rod is fixedly arranged at the top edge of the internal gear, and the other end of the piston rod is sleeved on the fixed rod through a bearing. An air outlet cover is arranged on one side of the air cylinder, the air outlet cover is communicated with the air cylinder, and an inflation port is arranged on the air outlet cover.

[0006] Preferably, one end of the air cylinder is fixedly connected with the air outlet cover by screws, and a sealing ring is arranged at the connection between the air cylinder and the air outlet cover.

[0007] Preferably, the fixed seat and the air cylinder are of an integrally formed integral structure, and a pressure monitoring interface is arranged on the outer surface of the air cylinder.

[0008] Preferably, a circular communication hole is opened at the end of the air cylinder, and a circular through hole is also opened on the piston, and the communication hole and the through hole are in a partially intersecting state.

[0009] Preferably, a sealing rubber ring is provided on the outer edge of the piston, and the sealing rubber ring is attached to the inner wall of the air cylinder.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the present utility model, a new gear transmission structure is designed, and combined with the integrated design of the fixed seat and the air cylinder, the overall structure is more compact, the occupied space during installation is reduced, the entire inflation volume is reduced, and it is convenient to carry and use; in addition, a heat dissipation fan blade is designed at the output end of the other end of the drive motor, which can play a role in dissipating heat from the drive motor and avoid the situation of drive motor failure and damage caused by overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0012] Figure 2 is a sectional structural schematic diagram of the present utility model.

[0013] Figure 3 is a partial structural schematic diagram of the present utility model.

[0014] 1. Drive motor; 2. Heat dissipation fan blade; 3. Fixed seat; 4. Internal gear; 5. Fixed rod; 6. Piston rod; 7. Air cylinder; 8. Air outlet cover; 9. Inflation port; 10. Piston; 11. Driving gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0016] Please refer to Figures 1 to 3, the present utility model provides a technical solution: an air pump core structure, including a drive motor 1. A heat dissipation fan blade 2 is fixedly arranged on the output shaft at one end of the drive motor 1. In order to play a role in heat dissipation, a fixed seat 3 is fixedly arranged at the other end of the drive motor 1. An internal gear 4 is rotatably arranged on the fixed seat 3. A driving gear 11 is fixedly arranged on the output shaft at the other end of the drive motor 1. The driving gear 11 extends into the internal gear 4, and the internal teeth of the driving gear 11 mesh with the internal teeth of the internal gear 4 for transmission. By meshing the internal gear 4 with the driving gear 11, while realizing the transmission, the overall occupied space is reduced, making the structure more compact, facilitating installation, ensuring that the whole air pump has a smaller volume and is convenient to carry. One end of the fixed seat 3 is provided with a cylinder 7. A piston rod 6 is movably arranged in the cylinder 7, and a piston 10 is fixedly arranged at one end of the piston rod 6. The piston rod 6 drives the piston 10 to reciprocate horizontally in the cylinder 7 to play a role in inflation. A fixing rod 5 is fixedly arranged at the top edge of the internal gear 4. The other end of the piston rod 6 is sleeved on the fixing rod 5 through a bearing. An air outlet cover 8 is arranged on one side of the cylinder 7. The air outlet cover 8 is communicated with the cylinder 7. An inflation port 9 is arranged on the air outlet cover 8, which is convenient for connecting an inflation tube for inflation.

[0017] In this embodiment, preferably, one end of the cylinder 7 is fixedly connected with the air outlet cover 8 by screws, and a sealing ring is arranged at the connection between the cylinder 7 and the air outlet cover 8 to ensure the sealing performance of the connection. In this embodiment, preferably, the fixed seat 3 and the cylinder 7 are of an integrally formed structure. A pressure monitoring interface is arranged on the outer surface of the cylinder 7 to facilitate connecting a pressure gauge for monitoring the air pressure. In this embodiment, preferably, a circular communication hole is opened at the end of the cylinder 7, and a circular through hole is also opened on the piston 10, and the communication hole and the through hole are in a partially intersecting state. In this embodiment, preferably, a sealing rubber ring is arranged on the outer edge of the piston 10, and the sealing rubber ring fits with the inner wall of the cylinder 7 to ensure good sealing performance when the piston 10 moves and ensure the inflation efficiency.

[0018] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An air pump mechanism structure, comprising a drive motor (1), characterized in that: A heat dissipation fan blade (2) is fixedly arranged on an output shaft at one end of the drive motor (1); a fixing seat (3) is fixedly arranged on the other end of the drive motor (1); an internal gear (4) is rotatably arranged on the fixing seat (3); a driving gear (11) is fixedly arranged on the output shaft at the other end of the drive motor (1); the driving gear (11) extends into the internal gear (4); the internal teeth of the driving gear (11) and the internal gear (4) are meshed with each other for transmission; the fixing seat (3) is fixedly arranged on the output shaft at the other end of the drive motor (1); An air cylinder (7) is arranged at one end, a piston rod (6) is movably arranged in the air cylinder (7), and a piston (10) is fixedly arranged at one end of the piston rod (6), a fixing rod (5) is fixedly arranged at the top edge of the internal gear (4), and the other end of the piston rod (6) is arranged on the fixing rod (5) through a bearing sleeve, and an air outlet hood (8) is arranged on one side of the air cylinder (7), the air outlet hood (8) and the air cylinder (7) are communicated with each other, and an air filling port (9) is arranged on the air outlet hood (8).

2. The air pump core structure according to claim 1, characterized in that: One end of the air cylinder (7) is fixedly connected to the air outlet hood (8) by means of screws, and a sealing ring is provided at the connection between the air cylinder (7) and the air outlet hood (8).

3. The air pump core structure according to claim 1, characterized in that: The fixing seat (3) and the air cylinder (7) are an integrally formed one-piece structure, and an air pressure monitoring interface is provided on the outer surface of the air cylinder (7).

4. The air pump movement structure according to claim 1, characterized in that: A circular connecting hole is provided at the end of the gas cylinder (7), and a circular through hole is also provided on the piston (10), and the connecting hole and the through hole are partially intersecting.

5. The air pump core structure according to claim 1, characterized in that: A sealing rubber ring is provided on the outer edge of the piston (10), and the sealing rubber ring is in contact with the inner wall of the gas cylinder (7).

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