Air suspension system for automobile

Abstract

The invention discloses an air suspension system for an automobile, which comprises a frame, an axle and an air spring, the frame and the axle are respectively provided with a mounting seat, and the two ends of the air spring are respectively provided with a fixed shaft fixedly connected with the corresponding mounting seat; the mounting base is of a columnar structure and is provided with an inserting hole for inserting the fixing shaft, a plurality of spherical holes communicated with the inserting hole are uniformly distributed in the side wall of the mounting base in the circumferential direction, clamping balls are movably arranged in the spherical holes, and a plurality of clamping grooves in one-to-one correspondence with the clamping balls are formed in the outer wall of the fixing shaft in the circumferential direction; the outer side of the mounting base is sleeved with a driving lock sleeve corresponding to the inserting hole, and the driving lock sleeve can move in the axial direction of the mounting base and is used for driving the clamping ball to move so that part of the clamping ball can move into the inserting hole and be connected with the corresponding clamping groove in a clamped mode. According to the air suspension system for the automobile, the fixing shaft and the mounting seat are locked and fixed in an inserted mode, so that the mounting and dismounting convenience between the air spring and the frame and between the air spring and the axle is improved, and later maintenance of the air spring is facilitated.

Description

Technical Field

[0001] The present invention relates to an air suspension system for an automobile. Background Art

[0002] In a traditional automobile suspension system, the spring used is a steel spring with linear characteristics. When the vehicle is unloaded, the body rises very high, and when it is heavily loaded, the body is pressed very low. The height of the suspension system changes with the load. Most modern cars' suspension systems adopt air suspension systems. According to different road conditions and the signals of distance sensors, the vehicle computer will judge the change in the body height, and then control the air compressor and exhaust valves to automatically compress or extend the air spring, thereby reducing or increasing the ground clearance of the chassis to increase the stability of the vehicle body at high speeds or the passability on complex road conditions. The main components of the air suspension system are air springs, height control valves, and shock absorbers.

[0003] Currently, the air springs of air suspension systems are mostly installed between the vehicle frame and the axle through fasteners such as bolts. Multiple groups of bolts are required for fastening, which is time-consuming for disassembly and installation and requires a high operating space, making the installation and disassembly processes of the air springs rather cumbersome and not facilitating the later maintenance of the air springs. For this reason, corresponding technical solutions need to be designed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an air suspension system for an automobile, which improves the convenience of installation and disassembly between the air spring and the vehicle frame and between the air spring and the axle by using plug-in locking fixation between the fixed shaft and the mounting seat, thereby facilitating the later maintenance of the air spring.

[0005] To achieve the above purpose, the technical solution of the present invention is to design an air suspension system for an automobile, including a vehicle frame, an axle, and an air spring. The vehicle frame and the axle are respectively provided with mounting seats. The two ends of the air spring are respectively provided with fixed shafts, and the two fixed shafts are respectively fixedly connected to the mounting seats of the vehicle frame and the axle. The mounting seat has a columnar structure. The mounting seat is provided with a plug-in hole for inserting the fixed shaft, and a plurality of spherical holes communicating with the plug-in hole are evenly distributed along the circumferential direction of the side wall of the mounting seat. A clamping ball is movably arranged in the spherical hole. A plurality of grooves corresponding to the clamping balls one by one are provided along the circumferential direction of the outer wall of the fixed shaft. A driving lock sleeve corresponding to the plug-in hole is sleeved outside the mounting seat. The driving lock sleeve can move along the axial direction of the mounting seat. The driving lock sleeve is used to drive the clamping ball to move, so that the clamping ball partially moves into the plug-in hole and is clamped with the corresponding groove. Two groups of operation holes are symmetrically arranged on the outer wall of the driving lock sleeve. An annular sliding groove slidably matched with the driving lock sleeve is arranged outside the mounting seat. One end of the driving lock sleeve far from the fixed shaft is connected with an axial spring, and the other end of the axial spring is connected with the annular sliding groove.

[0006] Preferably, cover plates are respectively fixed to both ends of the air spring, and the two fixed shafts are respectively fixed to the two cover plates.

[0007] Preferably, two sliders are symmetrically connected to one end of the driving lock sleeve close to the fixed shaft. The sliders can move radially along the driving lock sleeve. One end of the slider extends to the outside of the driving lock sleeve and is provided with a first inclined surface. A radial spring is connected between the other end of the slider and the driving lock sleeve. The groove wall of the annular chute is provided with a second inclined surface corresponding to the first inclined surface. The cover plate is provided with two positioning rods corresponding to the sliders one by one. The slider is provided with a positioning groove for inserting the corresponding positioning rod, and the slider is provided with an avoidance hole communicating with the positioning groove. The driving lock sleeve is provided with an avoidance channel.

[0008] Preferably, one end of the fixed shaft close to the mounting seat is of a conical structure.

[0009] Preferably, the clamping ball is a rigid sphere.

[0010] The advantages and beneficial effects of the present invention are as follows: An air suspension system for an automobile is provided. By using plug-in locking fixation between the fixed shaft and the mounting seat, the installation and disassembly convenience between the air spring and the vehicle frame and between the air spring and the axle is improved, and thus the subsequent maintenance of the air spring is facilitated. Description of the Drawings

[0011] Figure 1 is a schematic diagram of the fixed shaft and the mounting seat in the present invention.

[0012] Figure 2 is Figure 1 the enlarged view of part A in Detailed Embodiments

[0013] The following combines the drawings and embodiments to further describe the detailed embodiments of the present invention. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0014] The technical solution specifically implemented by the present invention is as follows: In a specific embodiment, as Figure 1 and Figure 2 shown, the present invention provides an air suspension system for an automobile, including a vehicle frame, an axle and an air spring. The vehicle frame and the axle are respectively provided with mounting seats 100. Fixed shafts 200 are respectively provided at both ends of the air spring. The two fixed shafts 200 are respectively fixedly connected to the mounting seats 100 of the vehicle frame and the axle; The mounting seat 100 is a columnar structure, and is provided with a plug hole 101 for inserting the fixed shaft 200, and the side wall of the mounting seat 100 is evenly distributed along the circumferential direction with a plurality of spherical holes 102 connected with the plug hole 101, and a card ball 103 is movably provided in the spherical hole 102, and the outer wall of the fixed shaft 200 is provided with a plurality of card grooves 201 corresponding to the card ball 103 along the circumferential direction, and the outer side of the mounting seat 100 is sleeved with a drive lock sleeve 104 corresponding to the plug hole 101, and the drive lock sleeve 104 can be moved along the mounting seat. The drive lock sleeve 104 is used to drive the movement of the card ball 103 to drive the card ball 103 to move axially with the mounting seat 100, so that the card ball 103 partially moves into the plug-in hole 101 and engages with the corresponding card slot 201, and the outer wall of the drive lock sleeve 104 is symmetrically provided with two groups of operating holes 105, and the outer side of the mounting seat 100 is provided with an annular groove 106 that slides with the drive lock sleeve 104, and the end of the drive lock sleeve 104 away from the fixed shaft 200 is connected to an axial spring 107, and the other end of the axial spring 107 is connected to the annular groove 106.

[0015] The above scheme is adopted: when installing the air spring, a tool is inserted into the operating hole 105 of the drive lock sleeve 104, and force is applied to move the drive lock sleeve 104 and compress the axial spring 107 until the drive lock sleeve 104 moves to a position offset from the spherical hole 102, and then the fixed shaft 200 of the air spring is inserted into the plug hole 101 of the mounting seat 100. During the insertion process of the fixed shaft 200, the card ball 103 is pushed to move in the spherical hole 102, so that the card ball 103 partially protrudes to the outside of the spherical hole 102, until the fixed shaft 200 is inserted into place, and the card slot 201 of the fixed shaft 200 is aligned with the opposite The ball 102 should be aligned, and the driving lock sleeve 104 is released at this time, so that the driving lock sleeve 104 is reset under the elastic force of the axial spring 107, and the driving lock sleeve 104 pushes the locking ball 103 to move in the spherical hole 102 during the resetting process, so that the locking ball 103 partially moves into the plug-in hole 101 and is clamped with the corresponding clamping groove 201, and the driving lock sleeve 104 will press the locking ball 103, so that the fixed shaft 200 is locked and fixed in the plug-in hole 101 through the cooperation of the locking ball 103 and the clamping groove 201, so as to realize the fixed connection between the fixed shaft 200 and the mounting seat 100, and complete the installation operation of the air spring. When removing the air spring, a tool is also used to insert into the operating hole 105 of the drive lock sleeve 104, and force is applied to move the drive lock sleeve 104 and compress the axial spring 107 until the drive lock sleeve 104 moves to a position offset from the spherical hole 102 to release the pressure on the locking ball 103. After that, the fixed shaft 200 can be pulled out of the plug hole 101, so that the fixed shaft 200 pushes the locking ball 103 back to the spherical hole 102 through the locking groove 201, and finally the drive lock sleeve 104 is released to reset it, completing the removal operation of the air spring.

[0016] In another specific embodiment, Figure 1As shown, cover plates 202 are respectively fixed to both ends of the air spring, and two fixing shafts 200 are respectively fixed to the two cover plates 202.

[0017] Adopting the above solution: the fixing shaft 200 is arranged at the end of the air spring through the cover plate 202.

[0018] In another specific embodiment, as Figure 1 and Figure 2 shown, two sliders 108 are symmetrically connected to one end of the driving lock sleeve 104 close to the fixing shaft 200. The sliders 108 can move radially along the driving lock sleeve 104. One end of the slider 108 extends to the outside of the driving lock sleeve 104 and is provided with a first inclined surface 109. A radial spring 110 is connected between the other end of the slider 108 and the driving lock sleeve 104. A second inclined surface 111 corresponding to the first inclined surface 109 is provided on the groove wall of the annular sliding groove 106. The cover plate 202 is provided with two positioning rods 203 corresponding to the sliders 108 one by one. The slider 108 is provided with a positioning groove 112 for inserting the corresponding positioning rod 203, and the slider 108 is provided with an avoidance hole 113 communicating with the positioning groove 112. The driving lock sleeve 104 is provided with an avoidance channel 114.

[0019] The above scheme is adopted: when installing the air spring, first, the two positioning rods 203 of the air spring are respectively inserted into the positioning grooves 112 of the two sliders 108 to realize the pre-positioning between the fixed shaft 200 and the mounting seat 100, so as to ensure that the card slot 201 can be accurately aligned with the corresponding card ball 103 when the fixed shaft 200 is inserted into place; then, the driving lock sleeve 104 is pushed to move by the positioning rod 203, and the fixed shaft 200 is gradually inserted into the plug hole 101. Before the fixed shaft 200 contacts the card ball 103, the driving lock sleeve 104 has moved to a position staggered with the spherical hole 102; then, the driving lock sleeve 104 is continued to be pushed to move by the positioning rod 203, and the fixed shaft 200 is continued to be inserted into the plug hole 101. During this process, the first inclined surface 109 of the slider 108 will The second inclined surface 111 of the annular slide groove 106 contacts and cooperates with the first inclined surface 109 through the contact and cooperation between the second inclined surface 111 and the first inclined surface 109, squeezing the slider 108 to move and compress the radial spring 110 until the fixed shaft 200 is inserted into place, and the slot 201 of the fixed shaft 200 is aligned with the corresponding card ball 103. At this time, due to the movement of the slider 108, the positioning rod 203 will be disengaged from the positioning slot 112, so that the drive lock sleeve 104 can be reset under the elastic force of the axial spring 107. In this process, the positioning rod 203 will pass through the avoidance hole 113 and the avoidance channel 114. During the resetting process of the drive lock sleeve 104, the card ball 103 is pushed to move in the spherical hole 102, so that the card ball 103 partially moves into the plug-in hole 101 and is clamped with the corresponding card slot 201, completing the installation operation of the air spring. In the above solution, the fixing shaft 200 and the mounting seat 100 are pre-positioned to ensure the insertion accuracy of the fixing shaft 200, and no external tools are required during the installation process, which further improves the convenience of installing the air spring.

[0020] In another specific embodiment, Figure 1 As shown, one end of the fixing shaft 200 close to the mounting seat 100 is a conical structure 204 .

[0021] The above solution is adopted: the insertion of the fixed shaft 200 is guided by the conical structure 204 .

[0022] In another specific embodiment, the blocking ball 103 is a rigid sphere.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An air suspension system for a vehicle, comprising a vehicle frame, a vehicle axle and an air spring, wherein the vehicle frame and the vehicle axle are respectively provided with mounting seats, and both ends of the air spring are respectively provided with fixed shafts, and the two fixed shafts are respectively fixedly connected to the mounting seats of the vehicle frame and the vehicle axle, characterized in that: The mounting seat is a columnar structure, which is provided with a plug-in hole for the fixed shaft to be inserted, and the side wall of the mounting seat is evenly distributed along the circumference with a plurality of spherical holes connected with the plug-in hole, a card ball is movably provided in the spherical hole, and the outer wall of the fixed shaft is provided with a plurality of card grooves corresponding to the card balls along the circumference, and the outer side of the mounting seat is sleeved with a driving lock sleeve corresponding to the plug-in hole, and the driving lock sleeve can be moved axially along the mounting seat, and the driving lock sleeve is used to drive the card ball to move so that the card ball part moves into the plug-in hole and engages with the corresponding card groove, and the outer wall of the driving lock sleeve is symmetrically provided with two groups of operating holes, and the outer side of the mounting seat is provided with an annular groove that slides with the driving lock sleeve, and the end of the driving lock sleeve away from the fixed shaft is connected to an axial spring, and the other end of the axial spring is connected to the annular groove.

2. The automotive air suspension system according to claim 1, characterized in that: Cover plates are fixed to both ends of the air spring respectively, and the two fixed shafts are fixed to the two cover plates respectively.

3. The automotive air suspension system according to claim 2, characterized in that: Two sliders are symmetrically connected to one end of the drive lock sleeve close to the fixed shaft, and the slider can move radially along the drive lock sleeve, one end of the slider extends to the outside of the drive lock sleeve and is provided with a first inclined surface, and a radial spring is connected between the other end of the slider and the drive lock sleeve, the groove wall of the annular slide groove is provided with a second inclined surface corresponding to the first inclined surface, the cover plate is provided with two positioning rods corresponding to the sliders one by one, the slider is provided with a positioning groove for the corresponding positioning rods to be inserted, and the slider is provided with an avoidance hole connected to the positioning groove, and the drive lock sleeve is provided with an avoidance channel.

4. The automotive air suspension system according to claim 1, characterized in that: One end of the fixed shaft close to the mounting seat is a cone-shaped structure.

5. The automotive air suspension system according to claim 1, characterized in that: The stuck ball is a rigid sphere.

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