Piston component of air pump for automobile air suspension system

Abstract

The utility model discloses a piston part of an air pump for an automobile air suspension system, which relates to the technical field of automobile air suspensions and comprises a primary connecting rod and a secondary connecting rod, an air inlet channel is vertically arranged at the bottom of the primary connecting rod, and a primary air suction valve plate is arranged at the bottom of the air inlet channel; according to the utility model, more air inlet channels can be covered through the integrated circular ring, so that the air flow is larger, and meanwhile, uniform distribution of circumferential force and reduction of local stress concentration are realized through the integrated structure, so that the risk of fatigue fracture is reduced, the service life is prolonged, the overall processing is simpler, and the processing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile air suspension, concretely relates to a piston component of air pump for automobile air suspension system. BACKGROUND

[0002] The air inlet valve plate in the automobile suspension system usually exists in the shock absorber or hydraulic buffer element, mainly functions to control the one-way flow of oil or gas to optimize the suspension performance, is the key component of suspension damping adjustment, and ensures the stability and comfort of the vehicle under different road conditions through fine fluid control.

[0003] The Chinese patent with the publication number CN216077502U discloses an air inlet valve plate of a compressor, a compressor and a refrigeration equipment, wherein the air inlet valve plate of the compressor is installed on the cylinder seat of the compressor, a valve plate gasket is further arranged between the cylinder seat and the air inlet valve plate, and the valve plate gasket is attached to the surface of the air inlet valve plate; at least one positioning groove is arranged on the end face of the air inlet valve plate facing the valve plate gasket, and a plurality of positioning clamping grooves are further arranged on the peripheral side wall of the air inlet valve plate; the air flow flow rate of the primary air inlet valve plate mentioned in the prior art is subject to the size of the valve tongue, the overall response is slow, the air flow pulsation is large, the noise is high, the valve tongue is prone to be broken from the root due to frequent opening and closing, and the durability is low.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a piston component of air pump for automobile air suspension system, and solve the problems mentioned in the background.

[0006] To solve the above technical problems, the basic concept of the technical scheme of the utility model is as follows:

[0007] A piston component of air pump for automobile air suspension system, comprising: a primary connecting rod and a secondary connecting rod, characterized in that a gas inlet channel is vertically arranged at the bottom of the primary connecting rod, a primary air inlet valve plate is arranged at the bottom of the gas inlet channel, a primary fixing ring is arranged at the top of the primary air inlet valve plate, a fastening screw one is rotatably arranged at the center position of the primary fixing ring, a secondary fixing ring is arranged at the top of the secondary connecting rod, a fastening screw two is rotatably arranged at the center position of the secondary fixing ring, a needle bearing is arranged at the center position of the secondary connecting rod, a connecting rod pin is arranged in the needle bearing, and a ball bearing is arranged at the bottom of the secondary connecting rod in the primary connecting rod.

[0008] Optionally, the bottom of the primary connecting rod is provided with a boss, and a distance is maintained between the fastening screw one and the boss.

[0009] Optionally, the primary air suction valve sheet is circular.

[0010] Optionally, the air inlet channel is provided with four.

[0011] Optionally, a primary piston sealing bowl is arranged between the primary fixed ring and the primary connecting rod, and a secondary piston sealing bowl is arranged between the secondary fixed ring and the secondary connecting rod.

[0012] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0013] 1. The piston component of the air pump for the automobile air suspension system is attached to the air inlet channel through the circular primary air suction valve sheet, the air inlet channel is opened by gravity when at rest, and the air inlet channel is closed by air pressure when inhaling to realize opening and closing adjustment; the integrated circular ring can cover more air inlet channels, so that the airflow is larger; at the same time, the integrated structure realizes uniform distribution of circumferential force, reduces local stress concentration, thereby reducing the risk of fatigue fracture and prolonging the service life; the overall processing is also simpler, and the processing cost is reduced.

[0014] 2. The piston component of the air pump for the automobile air suspension system is connected through multiple bolts and bearings, so that the overall installation and disassembly of the piston component are more convenient, simple to operate, and low in cost.

[0015] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings

[0017] In the drawings:

[0018] Figure 1 is a sectional view of the present application structure;

[0019] Figure 2 is Figure 1 is an enlarged view of A shown in the drawing;

[0020] Figure 3 is an exploded view of the present application.

[0021] In the drawings, the components represented by each reference numeral are listed as follows:

[0022] 1, primary connecting rod; 2, secondary connecting rod; 3, primary fixed ring; 4, primary suction valve piece; 5, primary piston sealing bowl; 6, secondary fixed ring; 7, secondary piston fixed bowl; 8, fastening screw one; 9, fastening screw two; 10, air inlet channel; 11, needle bearing; 12, connecting rod pin; 13, ball bearing; 14, boss.

[0023] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The present application will now be further described in detail with reference to the accompanying drawings.

[0025] Please refer to Figures 1-3 Fig. 1 shows a piston component of an air pump for an automobile air suspension system, which comprises a primary connecting rod 1 and a secondary connecting rod 2.

[0026] As Figure 1 , 3 shown, the primary connecting rod 1 of the present embodiment is vertically provided with an air inlet channel 10 at the bottom, the bottom of the air inlet channel 10 is provided with a primary suction valve piece 4, the top of the primary suction valve piece 4 is provided with a primary fixed ring 3, the primary fixed ring 3 is rotatably installed at the center position of the primary connecting rod 1, the secondary connecting rod 2 is provided with a secondary fixed ring 6 at the top, the secondary fixed ring 6 is rotatably installed at the center position of the secondary connecting rod 2, the secondary connecting rod 2 is provided with a needle bearing 11 at the center position, the needle bearing 11 is provided with a connecting rod pin 12 inside, and the bottom of the secondary connecting rod 2 is installed with a ball bearing 13 inside the primary connecting rod 1; wherein the primary connecting rod 1 and the secondary connecting rod 2 are connected by the connecting rod pin 12, and the needle bearing 11 is installed to connect them, the primary fixed ring 3 is fixed by three small screws, the secondary fixed ring 6 is locked by the central fastening screw two 9, and the ball bearing 13 on the secondary connecting rod 2 passes through the external connecting rod, and the relative movement of the primary connecting rod 1 and the secondary connecting rod 2 drives the movement of the piston, realizing the reciprocating movement of the piston.

[0027] As Figure 2As shown, the bottom of the first-stage connecting rod 1 in this embodiment is provided with a boss 14, and a certain distance is maintained between the fastening screw 8 and the boss 14. When the fastening screw 8 is locked on the first-stage connecting rod 1, the screw head on the fastening screw 8 is completely pressed against the boss 14, and its diameter is larger than the diameter of the boss 14, thus completely covering the boss 14. The first-stage intake valve plate 4 is sleeved on the boss 14, and it cannot be disengaged by the obstruction of the screw head. The entire first-stage intake valve plate 4 can move up and down on the boss 14. In the static state, the first-stage intake valve plate 4 is pressed against the screw head of the fastening screw 8 by gravity, the intake channel 10 is opened, and the airflow flows downward. When the airflow enters the intake channel 10 upward, due to the change in airflow velocity, the pressure difference between the upper and lower parts of the first-stage intake valve plate 4 increases. The lower air pressure pushes the first-stage intake valve plate 4 to press against the intake channel 10, thereby closing the intake channel 10 and realizing the one-way opening and closing of the intake channel 10.

[0028] like Figure 3 As shown, the first-stage intake valve plate 4 in this embodiment is circular. The first-stage intake valve plate 4 is used to block the intake passage 10 on the first-stage connecting rod 1. Conventional intake valve plates are mostly square metal plates cut into rectangles with a rounded front end. The cut portion is connected to the metal plate at the tail, and the rounded area covers the intake passage 10. The opening and closing of the intake passage 10 is controlled by the ductility of the metal. In comparison, the circular first-stage intake valve plate 4 is simpler to manufacture. Its integrated structure achieves uniform circumferential force distribution, reducing local stress concentration and thus lowering the risk of fatigue fracture. The overall movement of the first-stage intake valve plate 4 relies on the boss 14 rather than the ductility of the metal, which reduces vibration during movement, thereby greatly reducing noise and interference during operation.

[0029] like Figure 3 As shown, the air intake channel 10 in this embodiment is provided in four places. In a conventional case, each valve tongue of the intake valve plate corresponds to a single air intake channel 10. In order to reduce the cutting of finished products, only a few air intake channels 10 are often set to reduce the number of valve tongues, thereby reducing the risk of valve tongue breakage and extending service life. However, the number and size of the corresponding air intake channels 10 are limited, and the flow rate and speed of airflow are limited. The piston air supply will not be timely and will affect the overall operation. However, the circular first-stage intake valve plate 4 can cover the entire surface, so that more air intake channels 10 can be set. The corresponding air intake channels 10 can be set wider. Under the premise that the first-stage intake valve plate 4 can cover the surface, there is no need to adjust the specifications of the first-stage intake valve plate 4, thereby increasing the intake flow rate, reducing airflow pulsation, and making the intake more sufficient and stable.

[0030] like Figures 1-3As shown, the first-stage fixed ring 3 and the first-stage connecting rod 1 of the embodiment are provided with a piston first-stage sealing bowl 5, and the second-stage fixed ring 6 and the second-stage connecting rod 2 are provided with a piston second-stage sealing bowl 7; wherein the piston first-stage sealing bowl 5 reduces the influence of the vibration generated by the whole piston movement on the screw fixation, and the piston second-stage sealing bowl 7 is locked on the second-stage connecting rod 2 by locking the second-stage fixed ring 6 with the second-stage tightening screw 9 to absorb the vibration and prevent the second-stage tightening screw 9 from loosening.

[0031] Working principle: in the state of the piston at rest, the first-stage air inlet valve piece 4 is opened to the downward air inlet channel 10, the piston inhales air, and the air flow flows upward into the air inlet channel 10; due to the change of the air flow velocity, the pressure difference of the first-stage air inlet valve piece 4 increases, the air pressure at the bottom pushes the first-stage air inlet valve piece 4 to adhere to the air inlet channel 10, the air pressure in the air inlet channel 10 decreases, and the whole first-stage air inlet valve piece 4 is pressed and combined at the air inlet channel 10, so as to close the air inlet channel 10; when the internal air pressure increases, the air flow in the air inlet channel 10 flows downward, blows the first-stage air inlet valve piece 4 to separate from the air inlet channel 10, so as to open the air inlet channel 10, the first-stage air inlet valve piece 4 is hung by the first-stage tightening screw 8 to prevent it from separating, and the piston realizes a cycle work, so as to realize the one-way opening and closing of the air inlet channel 10.

[0032] The utility model is not limited to the above-mentioned embodiment, anyone should know the structural change made under the inspiration of the utility model, any technical scheme with the same or similar technical scheme of the utility model falls into the protection scope of the utility model. The utility model is not described in detail, and the technical, shape and structure parts are all known technologies.

Claims

1. A piston member of an air pump for an automotive air suspension system, comprising: Primary connecting rod (1) and secondary connecting rod (2), characterized in that the bottom of the primary connecting rod (1) is vertically provided with an air inlet channel (10), the bottom of the air inlet channel (10) is provided with a primary air inlet valve plate (4), the top of the primary air inlet valve plate (4) is provided with a primary fixed ring (3), the center of the primary fixed ring (3) is rotatably provided with a fastening screw one (8), the top of the secondary connecting rod (2) is provided with a secondary fixed ring (6), the center of the secondary fixed ring (6) is rotatably provided with a fastening screw two (9), the center of the secondary connecting rod (2) is provided with a needle bearing (11), the inside of the needle bearing (11) is provided with a connecting rod pin (12), the bottom of the secondary connecting rod (2) is provided with a ball bearing (13) in the primary connecting rod (1).

2. The piston member of an air pump for an air suspension system of an automobile according to claim 1, wherein The bottom of the primary connecting rod (1) is provided with a boss (14), and the fastening screw one (8) and the boss (14) maintain a distance.

3. The piston member of an air pump for an air suspension system of an automobile according to claim 1, wherein The primary air inlet valve plate (4) is circular.

4. The piston member of an air pump for an air suspension system of an automobile according to claim 3, wherein The air inlet channel (10) is provided with four.

5. The piston member of an air pump for an air suspension system of an automobile according to claim 1, wherein The primary fixed ring (3) and the primary connecting rod (1) are provided with a primary piston sealing bowl (5), and the secondary fixed ring (6) and the secondary connecting rod (2) are provided with a secondary piston fixed bowl (7).

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