Inflation pump

Abstract

The utility model discloses an inflating pump which comprises a motor, a support is fixedly installed on the motor, an air cylinder of an integrated structure is arranged on one side of the support, the end face of the inner side of the air cylinder is of an inclined structure, a piston head capable of moving horizontally is arranged in the air cylinder, and the end face of the piston head is of an inclined structure. A piston head is arranged on one side of the air cylinder, the inclination direction and the inclination angle of the piston head are consistent with the inclination direction and the inclination angle of the end face of the inner side of the air cylinder, a connecting rod is arranged on the other side of the piston head in an extending mode, and the connecting rod extends to the outer side of the air cylinder. The cylinder cover has the advantages that friction and abrasion are reduced, and gas flow is optimized; the locking ring is matched with the cylinder cover pagoda head to increase the gas tightness of a pipeline; the motor gear and the output shaft of the motor both adopt variable-diameter design, and a flange is additionally arranged at the root of the motor gear, so that the connection strength of the gear and the shaft is improved.

Description

Technical Field

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

[0002] Air pumps, also known as air inflators or tire pumps, work by running a motor. When pumping air out, atmospheric pressure pushes open the piston's check valve, allowing air to enter the cylinder. When inflating, the check valve closes due to pressure inside the cylinder, allowing air to enter the tire. Air pumps are widely used in automobiles, motorcycles, bicycles, and other applications.

[0003] In the existing air pump, the piston head at the front end of the connecting rod is vertical, and the end of the cylinder cavity is also a vertical surface parallel to the vertical piston head; there is wear, and the inflation efficiency is general and the long-term stability is limited. Therefore, the utility model proposes an air pump. Utility Model Content

[0004] The purpose of the present utility model is to provide an air pump to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air pump, comprising a motor, a bracket fixedly mounted on the motor, a cylinder of an integrated structure arranged on one side of the bracket, the inner end face of the cylinder is an inclined structure, a horizontally movable piston head is arranged in the cylinder, the end face of the piston head is an inclined structure, and the inclination direction and inclination angle of the piston head are consistent with the inclination direction and inclination angle of the inner end face of the cylinder, a connecting rod is extended on the other side of the piston head, and the connecting rod extends to the outside of the cylinder, the output shaft at the top of the motor drives the connecting rod and the piston head to reciprocate in the cylinder through a gear set, one end of the cylinder is connected to a cylinder head, a check valve assembly is provided at the position where the cylinder head and the cylinder are connected, an inflation port is connected on the cylinder head, and the inflation port is connected to an inner braided pipe through a protruding anti-detachment assembly.

[0006] Preferably, the gear set includes a motor gear fixedly mounted on the output shaft at the top of the motor, and a driven gear on a rotatable mounting bracket. The bracket and the driven gear are engaged with each other for transmission. An eccentric shaft is installed at the eccentric position of the driven gear. The outer end of the connecting rod is rotatably connected to the eccentric shaft through a connecting bearing. A retaining spring is engaged on the eccentric shaft to prevent the connecting rod from detaching.

[0007] Preferably, the motor gear and the output shaft of the motor both adopt a variable diameter structure, and a flange is provided at the bottom position of the motor gear.

[0008] Preferably, the check valve assembly includes a check valve for closing the passage between the cylinder head and the cylinder, and a check valve spring for resetting the check valve, one end of the check valve spring is connected to the check valve, and the other end of the check valve spring is against the inner wall of the cylinder head.

[0009] Preferably, an annular groove is provided on the edge of the piston head, and a piston ring is engaged in the groove, and fan blades are installed on the output shaft at the bottom of the motor.

[0010] Preferably, the raised anti-slip assembly includes a pagoda raised head integrally formed on the inflation port, and the inflation port is connected to the inner braided tube through the pagoda raised head. A locking ring is provided at the connection between the inflation port and the inner braided tube for maintaining air tightness.

[0011] Preferably, an elastic check piece is provided on the inclined surface of the piston head, and the elastic check piece is connected to the piston head by riveting; an air intake hole is provided on the end surface of the piston head.

[0012] Preferably, the outer surface of the cylinder is provided with a plurality of integrally formed heat dissipation ribs.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the piston head end face of the connecting rod end and the inner end face of the cylinder are inclined at the same direction, which has the advantages of:

[0014] Reduce friction and wear: The tilted piston head and inner end surface of the cylinder can help reduce friction and wear between moving parts. Under high pressure, the contact between parts is closer. The tilted design may reduce the wear caused by such close contact by changing the angle or distribution of the contact surface.

[0015] Optimizing gas flow: The tilted inner end face of the cylinder may help optimize the gas flow path inside the pump. During the inflation process, gas needs to be efficiently compressed and delivered to the tire. The tilted inner end face of the cylinder may improve inflation efficiency by changing the shape and direction of the airway, making the gas flow smoother.

[0016] Enhanced structural stability: Under high-pressure conditions, the various components of the air pump need to withstand greater pressure and stress. The inclined connecting rod and the inclined inner end face of the cylinder may enhance the structural stability of the entire air pump by changing the direction and distribution of the force on the components. This stability helps to ensure that the air pump will not fail due to component deformation or damage during high-pressure startup and operation.

[0017] The locking ring of the utility model cooperates with the cylinder cover pagoda head to increase the air tightness of the pipeline;

[0018] The motor gear and the motor output shaft both adopt a variable diameter design, and a flange is added to the root of the motor gear to improve the connection strength between the gear and the shaft;

[0019] The connecting rod and connecting rod bearing are injection-molded, and the connecting rod is made of nylon to improve the connection. The connecting rod bearing and small shaft adopt a clearance fit and are limited by the retaining spring.

[0020] There is an elastic check piece on the end face of the piston head, and the two are connected by riveting. When the air is pumped in, the spring piece closes, and when the air is inhaled, the elastic check piece deforms, and the air can enter from the air hole in the center of the end face of the piston head, thereby increasing the air intake.

[0021] The cylinder is designed with heat dissipation ribs to dissipate heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of a top-view cross-sectional structure of the present utility model;

[0024] Figure 3 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0025] Figure 4 This is a schematic cross-sectional view of the connection portion of the inflation port of the present invention;

[0026] In the figure: 1. Motor; 2. Fan blades; 3. Bracket; 4. Driven gear; 5. Motor gear; 6. Connecting rod; 7. Cylinder; 8. Heat dissipation rib; 9. Cylinder head; 10. Inlet; 11. Locking ring; 12. Inner braided tube; 13. Piston head; 14. Check valve; 15. Check valve spring; 16. Elastic check plate; 17. Piston ring; 18. Eccentric shaft; 19. Circlip; 20. Pagoda raised head. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figures 1 to 4, provides a technical solution: an air pump, including a motor 1, a bracket 3 is fixedly mounted on the motor 1, a cylinder 7 of an integrated structure is arranged on one side of the bracket 3, the inner end face of the cylinder 7 is an inclined structure, a piston head 13 that can move horizontally is arranged in the cylinder 7, the end face of the piston head 13 is an inclined structure, and the inclination direction and inclination angle of the piston head 13 are consistent with the inclination direction and inclination angle of the inner end face of the cylinder 7, which can optimize the gas flow: the inclined inner end face design of the cylinder may help to optimize the flow path of the gas inside the air pump; during the inflation process, the gas needs to be effectively compressed and transported to the tire; the inclined inner end face of the cylinder 7 may make the gas flow smoother by changing the shape and direction of the airway, thereby improving the inflation efficiency; enhancing the structural stability : Under high-pressure environment, various components of the air pump need to withstand greater pressure and stress; the inclined connecting rod 6 and the inner end face design of the cylinder 7 may enhance the structural stability of the entire air pump by changing the force direction and distribution of the components. This stability helps to ensure that the air pump will not fail due to deformation or damage of the components during high-pressure startup and operation; a connecting rod 6 is extended on the other side of the piston head 13, and the connecting rod 6 extends to the outside of the cylinder 7. The output shaft at the top of the motor 1 drives the connecting rod 6 and the piston head 13 to reciprocate in the cylinder 7 through a gear set. One end of the cylinder 7 is connected to a cylinder head 9, and a check valve assembly is provided at the position where the cylinder head 9 is connected to the cylinder 7. An inflation port 10 is connected to the cylinder head 9, and the inflation port 10 is connected to the inner braided tube 12 through a raised anti-detachment assembly. In this embodiment, the gear set preferably includes a motor gear 5 fixedly mounted on the output shaft at the top of the motor 1, and a driven gear 4 rotatably mounted on a bracket 3. The bracket 3 and the driven gear 4 mesh with each other for transmission. An eccentric shaft 18 is mounted eccentrically on the driven gear 4. The outer end of the connecting rod 6 is rotatably connected to the eccentric shaft 18 via a connecting bearing. A retaining spring 19 is engaged with the eccentric shaft 18 to prevent the connecting rod 6 from disengaging. In this embodiment, preferably, both the motor gear 5 and the output shaft of the motor adopt a variable diameter structure, and a flange is provided at the bottom of the motor gear 5 to enhance the connection strength between the motor gear 5 and the output shaft. In this embodiment, preferably, the check valve assembly includes a check valve 14 for sealing the passage between the cylinder head 9 and the cylinder 7, and a check valve spring 15 for resetting the check valve 14. One end of the check valve spring 15 is connected to the check valve 14, and the other end of the check valve spring 15 abuts against the inner wall of the cylinder head 9. In this embodiment, preferably, an annular groove is provided on the edge of the piston head 13, an air hole for air intake is provided on the end face of the piston head 13, and a piston ring 17 is provided in the groove, and a fan blade 2 is installed on the output shaft at the bottom of the motor 1. In this embodiment, preferably, the raised anti-slip assembly includes a pagoda raised head 20 integrally formed on the inflation port 10, and the inflation port 10 is connected to the inner braided tube 12 by the pagoda raised head 20. The connection between the inflation port 10 and the inner braided tube 12 is provided with a locking ring 11 for maintaining air tightness, which can increase the air tightness of the pipeline.

[0029] In this embodiment, preferably, an elastic check piece 16 is provided on the inclined surface of the piston head 13, and the elastic check piece 16 is connected to the piston head 13 by riveting. When the elastic check piece 16 is closed during inflation, and when air is admitted, the elastic check piece 16 is deformed, allowing air to enter through the air hole in the center of the end surface of the piston head 13, thereby increasing the air intake. In this embodiment, preferably, a plurality of integrally formed heat dissipation ribs 8 are provided on the outer surface of the cylinder 7 to achieve a heat dissipation effect.

[0030] 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. An air pump comprising a motor (1), characterized in that: The motor (1) is fixedly mounted with a bracket (3), and a cylinder (7) of an integrated structure is provided on one side of the bracket (3), and the inner end surface of the cylinder (7) is in an inclined structure. A piston head (13) capable of horizontal movement is provided in the cylinder (7), and the end surface of the piston head (13) is in an inclined structure, and the inclination direction and inclination angle of the piston head (13) are consistent with the inclination direction and inclination angle of the inner end surface of the cylinder (7). A connecting rod is extended from the other side of the piston head (13). (6), and the connecting rod (6) extends to the outside of the cylinder (7), the output shaft at the top of the motor (1) drives the connecting rod (6) and the piston head (13) to reciprocate in the cylinder (7) through the gear set, one end of the cylinder (7) is connected to a cylinder head (9), a check valve assembly is provided at the position where the cylinder head (9) is connected to the cylinder (7), and an inflation port (10) is connected to the cylinder head (9), and the inflation port (10) is connected to an inner braided tube (12) through a protruding anti-detachment assembly.

2. An air pump according to claim 1, characterized in that: The gear set comprises a motor gear (5) fixedly mounted on the output shaft at the top of the motor (1), and a driven gear (4) on a rotatable mounting bracket (3); the bracket (3) and the driven gear (4) are meshed with each other for transmission; an eccentric shaft (18) is mounted on the eccentric position of the driven gear (4); an outer end of the connecting rod (6) is rotatably connected to the eccentric shaft (18) via a connecting bearing; a retaining spring (19) is engaged on the eccentric shaft (18) for preventing the connecting rod (6) from disengaging.

3. An air pump according to claim 2, characterized in that: The motor gear (5) and the output shaft of the motor both adopt a variable diameter structure, and a flange is provided at the bottom of the motor gear (5).

4. The air pump according to claim 1, characterized in that: The check valve assembly comprises a check valve (14) for closing a passage between a cylinder cover (9) and a cylinder (7), and a check valve spring (15) for resetting the check valve (14), one end of the check valve spring (15) being connected to the check valve (14), and the other end of the check valve spring (15) being in contact with an inner wall of the cylinder cover (9).

5. The air pump according to claim 1, characterized in that: The edge of the piston head (13) is provided with an annular groove, and a piston ring (17) is arranged in the groove. An air intake hole is provided on the end face of the piston head (13), and a fan blade (2) is installed on the output shaft at the bottom of the motor (1).

6. The air pump according to claim 1, characterized in that: The raised anti-slip assembly comprises a pagoda raised head (20) integrally formed on the inflation port (10); the inflation port (10) is connected to the inner braided tube (12) by snapping together the pagoda raised head (20); and a locking ring (11) for maintaining air tightness is provided at the connection between the inflation port (10) and the inner braided tube (12).

7. The air pump according to claim 1, characterized in that: An elastic non-return plate (16) is provided on the inclined surface of the piston head (13), and the elastic non-return plate (16) is connected to the piston head (13) by riveting.

8. The air pump according to claim 1, characterized in that: The outer surface of the cylinder (7) is provided with a plurality of integrally formed heat dissipation ribs (8).

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