Inflation and exhaust compression structure of inflator pump

Abstract

The utility model provides an air intake and exhaust compression structure of an inflator pump, and belongs to the field of pumps. The problem that an existing inflator pump valve block is prone to falling off and high in assembly cost is solved. The air intake and exhaust compression structure of the inflator pump comprises a connecting rod, a piston ring, a main body frame, a gear set and a motor assembly and further comprises a choke spring assembly and a cylinder cover, the main body frame comprises a cylinder body, the gear set and an extension frame, an exhaust hole is formed in the end of the cylinder body, and the extension frame and the cylinder body are of an integrally-formed structure. A buckle structure is arranged between the cylinder cover and the cylinder body, the choke spring assembly is installed in the cylinder cover and comprises a sealing head and an elastic piece, the piston ring is installed at the top end of the connecting rod and penetrates into the cylinder body through the gear set and the motor assembly to do reciprocating motion, and a plurality of air inlet holes are formed in the top end of the connecting rod. The connecting rod is in transmission connection with the gear set through a connecting shaft, and the axis of the connecting shaft and the center of the gear set are of an eccentric structure. The utility model has the advantage of convenient assembly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pump field relates to a kind of inflator, especially to a kind of inflator air inlet exhaust compression structure. BACKGROUND

[0002] Inflator is also called air compressor, air compressor works through the operation of motor, when pumping, the check valve of piston is opened by the air pressure of atmosphere, gas enters air cylinder;When inflating, the check valve is closed by the air pressure in air cylinder, and gas enters tire, air compressor is widely used in automobile, motorcycle, bicycle and other fields, and the traditional air compressor is composed of connecting rod, air inlet valve piece, metal cylinder, metal main frame, air outlet valve piece, cylinder cover, cylinder cover fixing screw, piston ring, gear set and motor set.

[0003] The traditional air compressor has the following shortcomings: 1, the traditional connecting rod air inlet valve piece needs to be ultrasonic welded on the plastic connecting rod, which can cause the valve piece to be raised or detached after welding during the welding process, causing failure;2, metal cylinder and metal main frame need to be processed twice before use, which is low in efficiency and high in cost during processing;3, the exhaust valve piece is riveted on the metal pressure casting cylinder cover, which needs to be assembled after secondary processing;4, the existing technology has high processing cost, many processes and low efficiency, which can easily cause resource waste;5, because the valve piece is not shielded during operation, the noise is large, the air inlet and exhaust valve piece is easy to be raised, and the efficiency is reduced. SUMMARY

[0004] The utility model discloses a kind of inflator air inlet exhaust compression structures to solve the above problems, to solve the above problems in view of the above problems existing in prior art.

[0005] The utility model discloses a kind of inflator air inlet exhaust compression structures, including connecting rod, piston ring, main body frame, gear set and motor assembly, characterized by further including wind resistance spring assembly and cylinder cover;

[0006] The main body frame includes cylinder for reciprocating motion of connecting rod and piston ring and extension frame for fixed installation of gear set and motor assembly, located at the end of the cylinder with exhaust hole for gas discharge;

[0007] The extension frame and cylinder are integrally formed structure settings;

[0008] Buckle structure for facilitating quick assembly and installation is arranged between the cylinder cover and the cylinder;

[0009] The wind resistance spring assembly is installed in the cylinder cover, and the wind resistance spring assembly includes sealing head for opening and sealing of exhaust hole and elastic member for elastic reset of sealing head;

[0010] The piston ring is mounted on the top end of the connecting rod, and is driven into the cylinder for reciprocating motion through the gear set and the motor assembly, the connecting rod top end is provided with a plurality of intake holes for gas entering the cylinder;

[0011] The connecting rod and the gear set are drivingly connected through a connecting shaft, and the connecting shaft axis and the gear set center are arranged in an eccentric structure.

[0012] In the above-mentioned air pump intake and exhaust compression structure, the buckle structure includes a clamping part for convenient clamping and fixing, and a buckle part matched with the clamping part, the clamping part is located at the top end of the cylinder and is arranged in an integral molding structure with the cylinder, and the buckle part and the cylinder cover are arranged in an integral molding structure.

[0013] In the above-mentioned air pump intake and exhaust compression structure, the cylinder cover is rotated and buckled into the clamping part through the buckle part to achieve the purpose of quick assembly connection.

[0014] In the above-mentioned air pump intake and exhaust compression structure, the outer diameter of the top end of the connecting rod is between 12-24mm, and the number of intake holes is 4, which are distributed at an angle of 90° along the center of the top end of the connecting rod.

[0015] In the above-mentioned air pump intake and exhaust compression structure, the connecting rod, the main frame and the cylinder cover are made of nylon material and are injection molded.

[0016] Compared with the prior art, the air pump intake and exhaust compression structure has the following advantages:

[0017] 1. In this application, the connecting rod cancels the intake valve piece fixing column and cancels the ultrasonic welding, thereby improving the production efficiency;

[0018] 2. The main frame changes the split metal parts to integral parts, reduces the part processing error, cancels the processing technology, avoids the hidden troubles caused by multi-part assembly, and improves the assembly efficiency;

[0019] 3. The cylinder cover cancels the exhaust valve piece and the screw connection structure, and changes to a buckle structure. It is convenient for production and assembly, improves the production efficiency, cancels the screw connection cylinder cover structure, is convenient for production and assembly, is convenient for maintenance, reduces the waste of parts;

[0020] 4. The connecting rod, the main frame and the cylinder cover use nylon material instead of metal parts, and are changed to injection molding, which improves the production efficiency, can form multiple at a time, reduces the processing cost, the raw material cost, optimizes the assembly process, improves the production efficiency, and reduces the product cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the schematic diagram of the explosion structure of the air pump intake and exhaust compression structure.

[0022] Figure 2 is a schematic diagram of the connecting rod three-dimensional structure of the air pump intake and exhaust compression structure.

[0023] Figure 3 is a schematic diagram of the main body frame three-dimensional structure of the air pump intake and exhaust compression structure.

[0024] Figure 4 is a schematic diagram of the cylinder cover structure of the air pump intake and exhaust compression structure.

[0025] Figure 5 is a schematic diagram of the cross-sectional structure of the air pump intake and exhaust compression structure.

[0026] Figure 6 is a schematic diagram of the explosion structure of the air pump intake and exhaust compression structure.

[0027] In the figure, 1, connecting rod; 2, piston ring; 3, gear set; 4, motor assembly; 5, cylinder cover; 6, cylinder body; 7, extension frame; 8, exhaust hole; 9, sealing head; 10, elastic member; 11, intake hole; 12, connecting shaft; 13, buckle member; 14, clamping portion. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0029] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , the air pump intake and exhaust compression structure comprises a connecting rod 1, a piston ring 2, a main body frame, a gear set 3, and a motor assembly 4, further comprises a wind resistance spring assembly and a cylinder cover 5, the main body frame comprises a cylinder body 6 for reciprocating movement of the connecting rod 1 and the piston ring 2 and an extension frame 7 for fixed installation of the gear set 3 and the motor assembly 4, an exhaust hole 8 for gas discharge is located at the end of the cylinder body 6, the extension frame 7 is integrally formed with the cylinder body 6, a buckle structure for quick assembly and installation is arranged between the cylinder cover 5 and the cylinder body 6, the wind resistance spring assembly is installed inside the cylinder cover 5, the wind resistance spring assembly comprises a sealing head 9 for opening and sealing of the exhaust hole 8 and an elastic member 10 for elastic return of the sealing head 9, the piston ring 2 is installed at the top end of the connecting rod 1 and reciprocates into the cylinder body 6 through the gear set 3 and the motor assembly 4, a plurality of intake holes 11 for gas entering the cylinder body 6 are formed at the top end of the connecting rod 1, the connecting rod 1 and the gear set 3 are drivingly connected through a connecting shaft 12, and the axis of the connecting shaft 12 and the center of the gear set 3 are arranged in an eccentric structure.

[0030] The piston ring 2 is installed on the connecting rod 1, and the gear set 3 is installed on the extension frame 7 in the main frame. Then, the assembled connecting rod 1 is installed on the gear set 3 and the main frame, the air resistance spring assembly is placed in the cylinder cover 5, and the motor assembly 4 is locked on the main frame by rotating the cylinder body 6 top end of the main frame through the clamping part 14 and the buckle part 13.

[0031] By canceling the traditional connecting rod 1 intake valve piece hole and installation position, and changing to a new structure. Between the outer diameter φ12-24mm of the top end of the connecting rod 1, 0.8 times as the center, 90 degrees as the range, 4 2.5mm intake holes 11 are opened, and the piston ring 2 and the connecting rod 1 are used to complete the intake and exhaust of gas in the cylinder body 6 of the main frame. The connecting rod 1 is driven by the motor assembly 4 to rotate the gear set 3, and under the eccentric structure of the connecting shaft 12, the connecting rod 1 is driven to move downward, and the gas is inhaled through the four intake holes 11 on the top end of the connecting rod 1. Then, the motor assembly 4 is driven to rotate the gear set 3, and the eccentric effect drives the connecting rod 1 to move upward, and the gas is sealed downward by the force of the piston ring 2. The gas is discharged through the exhaust hole 8 of the main frame (the inner diameter is between 13mm-25mm), and the air resistance spring assembly is opened and sealed by the size of the gas. The exhaust effect is achieved through the hole of the cylinder cover 5.

[0032] Further, in order to facilitate the quick assembly of the cylinder cover 5 on the main frame, the buckle structure includes a clamping part 14 for convenient clamping and fixing, and a buckle part 13 matched with the clamping part 14. The clamping part 14 is located at the top end of the cylinder body 6 and is integrally formed with the cylinder body 6. The buckle part 13 and the cylinder cover 5 are integrally formed. Rotate the cylinder cover 5 and buckle it into the clamping part 14 through the buckle part 13 to achieve the purpose of quick assembly connection. The main frame and the cylinder cover 5 cancel the traditional screw fixed connection and are replaced by the buckle rotary connection, which is convenient and fast.

[0033] Preferably, the outer diameter of the top end of the connecting rod 1 is between 12-24mm, and the number of intake holes 11 is four, which are respectively opened at 0.8 times the center position and 90 degrees.

[0034] Further, in order to improve production efficiency, the connecting rod 1, the main frame and the cylinder cover 5 are made of nylon material and are injection molded, and the parts are replaced by nylon material instead of metal processing, which saves cost and improves production efficiency.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0036] Although the terms are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; it is against the spirit of the present application to interpret them as any kind of additional limitation.

Claims

1. An air pump intake and exhaust compression structure, comprising a connecting rod (1), a piston ring (2), a main frame, a gear set (3) and a motor assembly (4), characterized in that: Also included is a choke spring assembly and a cylinder head (5); The main frame comprises a cylinder (6) for the connecting rod (1) and the piston ring (2) to reciprocate and an extension frame (7) for the gear set (3) and the motor assembly (4) to be fixedly mounted, and an exhaust hole (8) for gas exhaust is provided at the end of the cylinder (6); The extension frame (7) and the cylinder body (6) are provided as an integrally formed structure; A snap-fit ​​structure is provided between the cylinder head (5) and the cylinder body (6) to facilitate quick assembly and installation; The choke spring assembly is installed inside the cylinder head (5), and the choke spring assembly includes a sealing head (9) for opening and sealing the exhaust hole (8) and an elastic member (10) for elastically resetting the sealing head (9); The piston ring (2) is mounted on the top end of the connecting rod (1) and penetrates into the cylinder (6) through the gear set (3) and the motor assembly (4) to perform reciprocating motion. The top end of the connecting rod (1) is provided with a plurality of air inlet holes (11) for gas to enter the cylinder (6); The connecting rod (1) and the gear set (3) are connected in transmission via a connecting shaft (12), and the axis of the connecting shaft (12) and the center of the gear set (3) are arranged in an eccentric structure.

2. The air pump intake and exhaust compression structure according to claim 1, characterized in that: The snap-fit ​​structure comprises a snap-fit ​​portion (14) for easy snap-fitting and fixing, and a snap-fit ​​piece (13) cooperating with the snap-fit ​​portion (14); the snap-fit ​​portion (14) is located at the top end of the cylinder body (6) and is integrally formed with the cylinder body (6); and the snap-fit ​​piece (13) and the cylinder head (5) are integrally formed.

3. The air pump intake and exhaust compression structure according to claim 2, characterized in that: The cylinder head (5) is rotated and snapped onto the snap-fit ​​portion (14) via the snap-fit ​​piece (13), thereby achieving the purpose of quick assembly and connection.

4. The air pump intake and exhaust compression structure according to claim 1, characterized in that: The outer diameter of the top end of the connecting rod (1) is between 12 and 24 mm, and the number of the air inlet holes (11) is 4, and they are distributed at an angle of 90° along the center of the top end of the connecting rod (1).

5. The air pump intake and exhaust compression structure according to claim 1, characterized in that: The connecting rod (1), the main frame and the cylinder head (5) are injection-molded from nylon.

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