Stable inflator pump

Abstract

The utility model discloses a stable inflator pump which comprises a motor, a support is fixedly installed on the top of the motor, a sleeve is integrally arranged on one side of the support, a cylinder cover is installed at the air outlet end of the sleeve in a communicated mode, an air outlet is formed in the cylinder cover, a piston head is movably arranged in the sleeve, and a piston rod is arranged in the piston head. An elastic non-return piece is arranged at one end of the piston head, a connecting rod is integrally arranged at the other end of the piston head, a driven gear is rotationally installed on the support through a bearing connecting rod shaft assembly, and a driving gear is fixedly arranged at the output end of the top of the motor. The driven gear connecting rod shaft is rotationally connected with the support through the bearing, friction force is reduced, kinetic energy loss is avoided, a balancing weight is additionally arranged on the driven gear, the rotating stability of the driven gear is guaranteed, and the rotation precision is guaranteed; and compared with a traditional eccentric wheel, the efficiency of reduction through the gear set is higher.

Description

Technical Field

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

[0002] Air pumps, also known as air inflators or inflators, operate through the operation of a motor. During deflating, atmospheric pressure pushes open the piston's check valve, allowing air to enter the cylinder. During inflation, the check valve is closed by air pressure within the cylinder, allowing air to enter the tire. Air pumps are widely used in automobiles, motorcycles, bicycles, and other fields. Existing air pumps experience significant friction at the connecting rod connection and where the bracket mounts the driven gear, leading to kinetic energy loss and poor stability, which affects rotational accuracy. To address these issues, the present utility model proposes a stable air pump. Utility Model Content

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

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stable air pump, comprising a motor, a bracket fixedly mounted on the top of the motor, a sleeve integrally provided on one side of the bracket, the air outlet end of the sleeve is connected to and installed with a cylinder cover, an air outlet is provided on the cylinder cover, a piston head is movably provided in the sleeve, an elastic check plate is provided at one end of the piston head, a connecting rod is integrally provided at the other end of the piston head, a driven gear is rotatably mounted on the bracket through a bearing-connecting rod shaft assembly, a driving gear is fixedly provided on the output end of the top of the motor, and the driving gear is meshed with the driven gear for transmission, the other end of the connecting rod extends horizontally to above the driven gear, and the driven gear and the connecting rod are rotatably connected through an eccentric bearing-connecting rod shaft assembly.

[0005] Preferably, the bearing connecting rod shaft assembly includes a bracket connecting rod shaft fixedly installed at the center position of the driven gear, and a bracket bearing installed on the inner side of the bracket, and the bottom end of the bracket connecting rod shaft is rotatably connected to the bracket through the bracket bearing.

[0006] Preferably, the eccentric bearing connecting rod shaft assembly includes a driven gear connecting rod shaft eccentrically mounted on the driven gear, and a connecting rod bearing mounted on the inner side of one end of the connecting rod. The driven gear connecting rod shaft is rotatably connected to one end of the connecting rod through the connecting rod bearing, and a retaining spring is also provided on the top of the driven gear connecting rod shaft for preventing it from falling off.

[0007] Preferably, a counterweight is provided on the inner side of the driven gear, and the counterweight and the driven gear are an integrated structure.

[0008] Preferably, a fan blade is installed at the bottom output end of the motor, and a reinforcing rib is provided at the connection between the bracket and the sleeve.

[0009] Preferably, the maximum diameter of the piston head matches the inner diameter of the sleeve, and a ring-shaped groove is provided on the outer side of the piston head, and a rubber ring for increasing the sealing performance can be installed in the ring-shaped groove.

[0010] Preferably, a check valve that can be elastically expanded or contracted by a spring is provided inside the cylinder cover.

[0011] Compared with the prior art, the present invention has the following beneficial effects: the connecting rod and the driven gear connecting rod shaft, as well as the driven gear connecting rod shaft and the bracket are all rotatably connected via bearings, thereby reducing friction and avoiding kinetic energy loss; and a counterweight is added to the driven gear to ensure the smooth rotation of the driven gear and the rotation accuracy; and the present invention is more efficient than the traditional eccentric wheel in reducing speed through the gear set;

[0012] The integrated bracket and sleeve designed in the utility model have a more compact structure, and the reinforcement ribs make the overall structure more firm and stable; an elastic check piece is designed at the front end of the piston head, which can quickly retract when the piston head is fully pressed into the sleeve and retracts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0016] In the figure: 1. Motor; 2. Fan blades; 3. Bracket; 4. Sleeve; 5. Cylinder head; 6. Air outlet; 7. Driven gear; 8. Reinforcement rib; 9. Driven gear connecting rod shaft; 10. Circlip; 11. Connecting rod; 12. Piston head; 13. Elastic check plate; 14. Driving gear; 15. Connecting rod bearing; 16. Bracket bearing; 17. Bracket connecting rod shaft; 18. Counterweight. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figures 1 to 3, provides a technical solution: a stable air pump, including a motor 1, a bracket 3 is fixedly installed on the top of the motor 1, a sleeve 4 is integrally provided on one side of the bracket 3, the air outlet end of the sleeve 4 is connected to the cylinder head 5, the cylinder head 5 is provided with an air outlet 6, a piston head 12 is movably provided in the sleeve 4, one end of the piston head 12 is provided with an elastic check plate 13, the other end of the piston head 12 is integrally provided with a connecting rod 11, a driven gear 7 is rotatably installed on the bracket 3 through a bearing connecting rod shaft assembly, and an active gear is fixedly provided on the output end of the top of the motor 1 Gear 14, and the driving gear 14 is meshed with the driven gear 7 for transmission, the other end of the connecting rod 11 extends horizontally to the top of the driven gear 7, and the driven gear 7 and the connecting rod 11 are rotatably connected through an eccentric bearing connecting rod shaft assembly. In this embodiment, preferably, the bearing connecting rod shaft assembly includes a bracket connecting rod shaft 17 fixedly mounted at the center position of the driven gear 7, and a bracket bearing 16 mounted on the inner side of the bracket 3. The bottom end of the bracket connecting rod shaft 17 is rotatably connected to the bracket 3 through the bracket bearing 16, which can reduce friction and ensure good rotation accuracy. In this embodiment, preferably, the eccentric bearing connecting rod shaft assembly includes a driven gear connecting rod shaft 9 eccentrically mounted on the driven gear 7, and a connecting rod bearing 15 mounted on the inner side of one end of the connecting rod 11. The driven gear connecting rod shaft 9 is rotatably connected to one end of the connecting rod 11 through the connecting rod bearing 15. The top of the driven gear connecting rod shaft 9 is also provided with a retaining spring 10 for preventing it from falling off. In this embodiment, preferably, a counterweight 18 is provided on the inner side of the driven gear 7, and the counterweight 18 and the driven gear 7 are an integrated structure, in order to ensure the stability of the rotation of the driven gear 7. In this embodiment, preferably, a fan blade 2 is installed at the bottom output end of the motor 1, and a reinforcing rib 8 is provided at the junction of the bracket 3 and the sleeve 4, which plays a stabilizing role and ensures the stability of the overall structure. In this embodiment, preferably, the maximum diameter of the piston head 12 matches the inner diameter of the sleeve 4, and a circle of annular grooves is provided on the outer side of the piston head 12, and a rubber ring for increasing the sealing can be installed in the annular groove to enhance the sealing. In this embodiment, preferably, a check valve that can be elastically retracted by a spring is provided inside the cylinder head 5 to prevent rapid backflow of gas.

[0019] 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 stable air pump, comprising a motor (1), characterized in that: A bracket (3) is fixedly mounted on the top of the motor (1), a sleeve (4) is integrally arranged on one side of the bracket (3), a cylinder head (5) is connected to the air outlet end of the sleeve (4), an air outlet (6) is arranged on the cylinder head (5), a piston head (12) is movably arranged in the sleeve (4), one end of the piston head (12) is provided with an elastic check plate (13), the other end of the piston head (12) is integrally provided with a connecting rod (11), a driven gear (7) is rotatably mounted on the bracket (3) through a bearing connecting rod shaft assembly, a driving gear (14) is fixedly mounted on the output end of the top of the motor (1), and the driving gear (14) is meshed with the driven gear (7) for transmission, the other end of the connecting rod (11) extends horizontally to above the driven gear (7), and the driven gear (7) and the connecting rod (11) are rotatably connected through an eccentric bearing connecting rod shaft assembly.

2. A stable air pump according to claim 1, characterized in that: The bearing connecting rod shaft assembly comprises a bracket connecting rod shaft (17) fixedly mounted at the center of a driven gear (7), and a bracket bearing (16) mounted on the inner side of the bracket (3), wherein the bottom end of the bracket connecting rod shaft (17) is rotatably connected to the bracket (3) via the bracket bearing (16).

3. A stable air pump according to claim 1, characterized in that: The eccentric bearing connecting rod shaft assembly comprises a driven gear connecting rod shaft (9) eccentrically mounted on a driven gear (7), and a connecting rod bearing (15) mounted on the inner side of one end of a connecting rod (11); the driven gear connecting rod shaft (9) is rotatably connected to one end of the connecting rod (11) via the connecting rod bearing (15); and a retaining spring (10) for preventing disengagement is further provided at the top of the driven gear connecting rod shaft (9).

4. A stable air pump according to claim 1, characterized in that: A counterweight (18) is provided on the inner side of the driven gear (7), and the counterweight (18) and the driven gear (7) are an integrated structure.

5. A stable air pump according to claim 1, characterized in that: A fan blade (2) is installed at the bottom output end of the motor (1), and a reinforcing rib (8) is provided at the connection between the bracket (3) and the sleeve (4).

6. A stable air pump according to claim 1, characterized in that: The maximum diameter of the piston head (12) matches the inner diameter of the sleeve (4). An annular groove is provided on the outer side of the piston head (12), and a rubber ring for increasing sealing can be installed in the annular groove.

7. A stable air pump according to claim 1, characterized in that: A check valve that can be elastically expanded or contracted by a spring is provided inside the cylinder cover (5).

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