Machine core of air pump with brush

Abstract

The utility model discloses a brush air pump machine core which comprises a support, a cylinder sleeve is integrally arranged at one end of the support, a cylinder cover is arranged on the outer side of the cylinder sleeve in a communicating mode, a double-check-valve assembly is arranged at the communicating position of the cylinder cover and the cylinder sleeve, and a split assembly type inflation connecting piece is arranged on the outer side of the cylinder cover in a communicating mode. A driven inner gear disc is rotationally arranged on the support through a driven gear shaft, the air pump machine core conducts transmission through an inner gear set, and the air pump machine core is matched with the support and the cylinder sleeve which are small in size and integrated and a flat cylinder cover, so that the overall structure of the air pump machine core is more compact, and the size of the air pump is smaller. Bearings are designed at the driven inner gear shaft and the connecting rod shaft, so that the rotation is more stable, and the long-term stability of the operation of the whole air pump core is ensured; according to the split assembly type inflation connecting piece, any part of the inflation connecting piece can be independently replaced when damaged, the replacement and use cost is saved, and the inflation direction can be freely changed through hose connection.

Description

Technical Field

[0001] The utility model belongs to the technical field of air pumps, and in particular relates to a brushed air pump core. Background Art

[0002] An air pump, also known as an air inflator, an air pump, or an inflation pump, is a common air pump. It works by running a motor. When the motor is running, the valve of the communicating device is opened by the atmospheric pressure, and the gas enters the cylinder. When air is pumped into the tire, the valve is closed by the air pressure in the cylinder, and the gas enters the tire. The existing air pump movement has limited stability during long-term use, and its overall size is large, resulting in a large size of the entire air pump. For this reason, the utility model proposes a brushed air pump movement. Utility Model Content

[0003] The purpose of the present utility model is to provide a brushed air pump movement to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a brushed air pump movement, comprising a bracket, one end of the bracket is integrally provided with a cylinder sleeve, the outside of the cylinder sleeve is connected to a cylinder head, a double check valve assembly is provided at the communication point between the cylinder head and the cylinder sleeve, and the outside of the cylinder head is connected to a split-assembled inflation connector, a driven internal gear plate is provided on the bracket through which a driven gear shaft is rotated, a bearing B is provided at the connection between the driven internal gear plate and the driven gear shaft, a brushed motor is fixedly installed on the bottom of the bracket, the top output end of the brushed motor extends above the stop bracket, and the output end of the top of the brushed motor is provided with a synchronously rotating driving gear, the driving gear extends to the inner side of the driven internal gear plate and meshes with each other for transmission, a piston connecting rod for pushing gas is provided in the cylinder sleeve, one end of the piston connecting rod extends to the outside of the cylinder sleeve, and is connected to the driven internal gear plate for relative rotation through a connecting rod shaft.

[0005] Preferably, the connecting rod shaft includes a connecting rod shaft eccentrically fixed on the driven internal gear plate, one end of the piston connecting rod is rotatably sleeved on the connecting rod shaft through a bearing A, and the top end of the connecting rod shaft is engaged with a retaining spring for limiting and preventing disengagement.

[0006] Preferably, the double check valve assembly includes two check valves and two springs arranged at the communication position between the cylinder head and the cylinder liner, and each check valve is attached to the communication position through a spring.

[0007] Preferably, the inflation connector includes a bend connected to the cylinder head by a threaded connection, a connecting hose connected to the bend through a locking ring A, and a sensor seat connected to the connecting hose through a locking ring B. One end of the bend connected to the connecting hose is a threaded pagoda joint structure, which makes the connection more stable and the direction of the air outlet can be changed arbitrarily.

[0008] Preferably, the cylinder head and the cylinder liner are fixedly connected by a plurality of screws, and a circle of sealing gasket for sealing is provided at the connection between the cylinder head and the cylinder liner.

[0009] Preferably, a circle of piston rings is provided on the piston connecting rod located inside the cylinder sleeve, and a check plate is provided on the inner surface of the piston connecting rod by riveting, and a fan blade is installed on the output shaft at the bottom end of the brush motor.

[0010] Preferably, one end of the piston connecting rod where the piston ring is mounted has an inclined surface of 6.5 degrees, and the inner end face of the cylinder liner also has an inclined surface of 6.5 degrees. This design can directly enter into surface contact. Compared with the non-inclined connecting rod, the resistance when the connecting rod moves to the bottom of the cylinder body is very small, which can significantly improve the high-pressure starting performance of the air pump.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the air pump movement of the present invention is driven by an internal gear set, and is equipped with a compact integrated bracket and cylinder sleeve, as well as a flat cylinder cover, so that the overall structure of the air pump movement is more compact, saving space, and making the subsequent overall air pump smaller and easier to carry and place; bearings are designed at the driven internal gear shaft and the connecting rod shaft, so that the rotation is more stable, ensuring the long-term stability of the operation of the overall air pump movement; the present invention is designed with a split-assembly type inflation connector, so that any part of the inflation connector can be replaced separately if damaged, saving the cost of replacement and use, and the designed double check valve assembly can increase the gas flow and stably improve the inflation efficiency; the inner end of the piston connecting rod is an inclined surface of 6.5 degrees, and the inner end face of the cylinder sleeve is also an inclined surface of 6.5 degrees; it can directly enter into surface contact, and compared with the non-inclined piston connecting rod, the resistance is smaller when the piston connecting rod moves to the bottom of the cylinder sleeve, which can significantly improve the high-pressure starting performance of the air pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the utility model;

[0014] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0015] In the figure: 1. Brushed motor; 2. Fan blade; 3. Bracket; 4. Driven internal gear plate; 5. Piston connecting rod; 6. Cylinder liner; 7. Cylinder head; 8. Elbow; 9. Locking ring A; 10. Connecting hose; 11. Locking ring B; 12. Sensor seat; 13. Connecting rod shaft; 14. Bearing A; 15. Bearing B; 16. Driven gear shaft; 17. Driving gear; 18. Circlip; 19. Check valve; 20. Spring; 21. Sealing washer; 22. Check plate; 23. Piston ring. DETAILED DESCRIPTION

[0016] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0017] Example 1

[0018] See also Figures 1 to 3, which is the first embodiment of the present utility model, and provides a technical solution: a brushed air pump movement, including a bracket 3, one end of the bracket 3 is integrally provided with a cylinder sleeve 6, the outside of the cylinder sleeve 6 is connected to a cylinder head 7, and a double check valve assembly is provided at the connection between the cylinder head 7 and the cylinder sleeve 6, and a split-assembled inflation connector is provided on the outside of the cylinder head 7. A driven internal gear disk 4 is rotated on the bracket 3 through a driven gear shaft 16, and a bearing B15 is provided at the connection between the driven internal gear disk 4 and the driven gear shaft 16. A brushed motor 1 is fixedly installed at the bottom of the bracket 3, and the top output end of the brushed motor 1 extends above the bracket 3, and the output end of the top of the brushed motor 1 is provided with a synchronously rotating driving gear 17, which extends to the inner side of the driven internal gear disk 4 and meshes with each other for transmission. A piston connecting rod 5 for pushing gas is provided in the cylinder sleeve 6, and one end of the piston connecting rod 5 extends to the outside of the cylinder sleeve 6 and is connected to the driven internal gear disk 4 for relative rotation through a connecting rod shaft. In this embodiment, preferably, the connecting rod shaft includes a connecting rod shaft 13 eccentrically fixed to the driven internal gear plate 4. One end of the piston connecting rod 5 is rotatably sleeved on the connecting rod shaft 13 via a bearing A14. The top end of the connecting rod shaft 13 is engaged with a retaining spring 18 for limiting and preventing disengagement, thereby preventing disengagement. The retaining spring 18 can be flexibly removed for easy installation. In this embodiment, preferably, the double check valve assembly includes two check valves 19 and two springs 20 provided at the connection point between the cylinder head 7 and the cylinder liner 6. Each check valve 19 is affixed to the connection point by a spring 20 to prevent gas backflow. In this embodiment, preferably, the inflatable connector includes a bend 8 connected to the cylinder head 7 by threaded engagement, a connecting hose 10 connected to the bend 8 by a locking ring A9, and a sensor seat 12 connected to the connecting hose 10 by a locking ring B11, so as to achieve splicing assembly and facilitate replacement of various parts, and the end where the bend 8 is connected to the connecting hose 10 is a threaded pagoda joint structure, which makes the connection more stable, and the design of the bend 8 can arbitrarily change the direction of the air outlet. In this embodiment, preferably, the cylinder head 7 and the cylinder sleeve 6 are fixedly connected by multiple screws, and a circle of sealing gasket 21 is provided at the connection between the cylinder head 7 and the cylinder sleeve 6 to play a sealing role. In this embodiment, preferably, a circle of piston rings 23 is provided on the piston connecting rod 5 located on the inner side of the cylinder sleeve 6, and a check plate 22 is provided on the inner surface of the piston connecting rod 5 by riveting, and a fan blade 2 is installed on the output shaft at the bottom end of the brushed motor 1.

[0019] In this embodiment, the end of the piston connecting rod 5 where the piston ring 23 is installed is an inclined surface of 6.5 degrees, and the inner end surface of the cylinder liner 6 is also an inclined surface of 6.5 degrees; the design can directly enter into surface contact, and compared with the non-inclined connecting rod, the resistance is smaller when the connecting rod moves to the bottom of the cylinder liner 6, which can significantly improve the high-pressure starting performance of the air pump.

[0020] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brushed air pump mechanism, comprising a bracket (3), characterized in that: One end of the bracket (3) is integrally provided with a cylinder sleeve (6), the outer side of the cylinder sleeve (6) is connected to a cylinder cover (7), a double check valve assembly is provided at the connection between the cylinder cover (7) and the cylinder sleeve (6), and a split assembled type air charging connector is provided at the outer side of the cylinder cover (7). A driven internal gear plate (4) is provided on the bracket (3) for rotation via a driven gear shaft (16), a bearing B (15) is provided at the connection between the driven internal gear plate (4) and the driven gear shaft (16), and the bottom of the bracket (3) is fixed. A brushed motor (1) is fixedly installed, the top output end of the brushed motor (1) extends above the stop bracket (3), and the top output end of the brushed motor (1) is provided with a synchronously rotating driving gear (17), the driving gear (17) extends to the inner side of the driven internal gear plate (4), and the two gears are meshed and driven with each other, and a piston connecting rod (5) for pushing gas is provided in the cylinder sleeve (6), one end of the piston connecting rod (5) extends to the outer side of the cylinder sleeve (6), and is connected to the driven internal gear plate (4) for relative rotation through a connecting rod shaft.

2. A brushed air pump movement according to claim 1, characterized in that: The connecting rod shaft comprises a connecting rod shaft (13) eccentrically fixed on a driven internal gear plate (4); one end of the piston connecting rod (5) is rotatably sleeved on the connecting rod shaft (13) via a bearing A (14); and a retaining spring (18) for limiting and preventing disengagement is engaged at the top end of the connecting rod shaft (13).

3. The brushed air pump movement according to claim 1, characterized in that: The double check valve assembly comprises two check valves (19) and two springs (20) arranged at the communication position between the cylinder cover (7) and the cylinder sleeve (6), and each check valve (19) is attached to the communication position by a spring (20).

4. The brushed air pump movement according to claim 1, characterized in that: The inflation connector comprises a bend (8) connected to the cylinder cover (7) by screw thread, a connecting hose (10) connected to the bend (8) by a locking ring A (9), and a sensor seat (12) connected to the connecting hose (10) by a locking ring B (11), wherein one end of the bend (8) connected to the connecting hose (10) is a threaded pagoda joint structure.

5. The brushed air pump movement according to claim 1, characterized in that: The cylinder cover (7) and the cylinder sleeve (6) are fixedly connected by a plurality of screws, and a sealing gasket (21) for sealing is provided at the connection between the cylinder cover (7) and the cylinder sleeve (6).

6. The brushed air pump movement according to claim 1, characterized in that: A circle of piston rings (23) is provided on the piston connecting rod (5) located inside the cylinder sleeve (6), and a check plate (22) is provided on the inner surface of the piston connecting rod (5) by riveting. A fan blade (2) is installed on the output shaft at the bottom end of the brush motor (1).

7. A brushed air pump movement according to claim 6, characterized in that: One end of the piston connecting rod (5) on which the piston ring (23) is mounted is inclined at 6.5 degrees, and the inner end surface of the cylinder sleeve (6) is also inclined at 6.5 degrees.

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