A gas compression valve group and a gas compression device for automobile air suspension

Abstract

The application discloses a gas compression valve group and a gas compression device for automobile air suspension, and belongs to the technical field of automobile air suspension. The gas compression valve group comprises a piston shell, a large piston assembly, a small piston assembly, a crank connecting rod and a ventilation pipeline connecting the large piston assembly and the small piston assembly, wherein the ventilation pipeline comprises a ventilation pipe and two connectors connected to two ends of the ventilation pipe; the large piston assembly is provided with a large ventilation channel communicated with a large piston chamber; the small piston assembly is provided with a small ventilation channel communicated with a small piston chamber; the two connectors are respectively detachably inserted into the large piston assembly and the small piston assembly, and the ventilation pipe is communicated with the large ventilation channel and the small ventilation channel simultaneously. The gas compression device for automobile air suspension comprises the gas compression valve group. The gas compression valve group and the gas compression device for automobile air suspension disclosed by the application are provided with a detachable ventilation pipeline, so that the structure is simplified, the manufacturing process is simple, the sealing level requirement is low, and maintenance is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, in particular to a gas compression valve group and a gas compression device for automobile air suspension. BACKGROUND

[0002] The air suspension is a kind of stable system for controlling the horizontal posture of the vehicle body and adjusting the vehicle body. In the process of air suspension operation, a gas compressor is needed to provide compressed air, so that the air suspension can adjust and control the vehicle body. The existing gas compressor adopts two-stage compression technology, and the maximum output gas can reach 13-21 Bar. The high output gas pressure can effectively improve the adjustment sensitivity of the automobile air suspension system, so it is widely used.

[0003] In the related art, the two-stage compression technology is to pass the gas in the large piston chamber into the small piston chamber. The gas passage formed by the communication between the two chambers needs to be connected by channels inside the large and small piston assemblies. The disadvantage of this method is that the components of the gas passage formed by the communication between the large and small piston chambers need to be provided with air holes, and the air holes of each component need to be sealed well when connected. The process requirement is very high, the manufacturing cost is high, and the maintenance cost is also high because the whole device can only be replaced but cannot be repaired.

[0004] Therefore, it is necessary to provide a gas compression valve group and a gas compression device for automobile air suspension to solve the above problems. SUMMARY

[0005] The main purpose of the present application is to provide a gas compression valve group and a gas compression device for automobile air suspension, which aims to solve the problem of high manufacturing cost and maintenance cost caused by the high process requirement of the gas passage formed by the existing two-stage compression technology gas compressor.

[0006] To achieve the above purpose, the gas compression valve group provided by the present application comprises a piston shell, a large piston assembly and a small piston assembly installed in the piston shell, a crank connecting rod connecting the large piston assembly and the small piston assembly, and an air pipe connecting the large piston assembly and the small piston assembly.

[0007] The large piston assembly and the small piston assembly form a large piston chamber and a small piston chamber in the piston shell, respectively.

[0008] The air pipe comprises an air pipe and two connectors connected to both ends of the air pipe. The large piston assembly is provided with a large air passage communicating with the large piston chamber, and the small piston assembly is provided with a small air passage communicating with the small piston chamber. The two connectors are detachably inserted into the large piston assembly and the small piston assembly, respectively, and the air pipe is in communication with the large air passage and the small air passage at the same time.

[0009] Preferably, threaded holes are formed on the large piston assembly and the small piston assembly, and one end of the joint is threaded, and the joint is connected with the threaded holes through threads.

[0010] Preferably, the air pipe is a hose.

[0011] Preferably, the air pipe is a PVC hose.

[0012] Preferably, the joint is a quick joint.

[0013] Preferably, the large piston assembly comprises a large piston rod, a large piston head, a large connecting frame for fixing the large piston head, and a large bearing seat connected to the large connecting frame, the crank connecting rod is connected with a bearing in the large bearing seat, the large air passage passes through the large piston rod and the large piston head, and one joint is connected to the large piston rod.

[0014] Preferably, the small piston assembly comprises a small piston rod, a small piston head, a small connecting frame for fixing the small piston head, and a small bearing seat connected to the small connecting frame, the crank connecting rod is connected with a bearing in the small bearing seat, the small air passage passes through the small piston rod and the small piston head, and one joint is connected to the small piston rod.

[0015] Preferably, the large air passage and the small air passage are both L-shaped.

[0016] The application also provides a gas compression device for automobile air suspension, which comprises a drying and filtering assembly and a motor assembly, the crank connecting rod is driven to rotate by the motor assembly, the crank connecting rod drives the large piston assembly and the small piston assembly to reciprocate up and down, and the drying and filtering assembly is communicated with the small piston chamber.

[0017] Preferably, the crank connecting rod is connected with the output shaft of the motor assembly through a deep groove ball bearing.

[0018] Compared with the prior art, the gas compression valve group and the gas compression device for automobile air suspension provided by the application have the following beneficial effects:

[0019] The gas compression valve group and the gas compression device for automobile air suspension provided by the application connect the large piston chamber and the small piston chamber in communication through the air pipe, wherein the joint of the air pipe is detachably connected to the large piston assembly and the small piston assembly to form the communication between the chambers, without needing to open an air hole on other associated components, and the structure is simplified, the manufacturing process is simple, and the sealing level requirement can be reduced; and when repairing, the joint is directly disassembled and the air pipe is replaced, so that the repairing is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the drawings shown without creative labor.

[0021] Figure 1 The figure shows the perspective view of the gas compression device for automobile air suspension provided by the present application.

[0022] Figure 2 The figure shows the perspective view of the gas compression device for automobile air suspension provided by the present application. Figure 1 The figure shows the sectional view of the gas compression device for automobile air suspension.

[0023] Figure 3 The figure shows the partial structure view of the gas compression device for automobile air suspension. Figure 1 The figure shows the partial structure view of the gas compression device for automobile air suspension.

[0024] Figure 4 The figure shows the partial structure view of the gas compression valve group. Figure 3 The figure shows the sectional view of the large piston assembly of the gas compression valve group. The figure shows the sectional view of the small piston assembly of the gas compression valve group.

[0025] The figure shows the sectional view of the small piston assembly of the gas compression valve group. Figure 5 The figure shows the sectional view of the small piston assembly of the gas compression valve group. Figure 4 The figure shows the sectional view of the large piston assembly of the gas compression valve group. The figure shows the sectional view of the large piston assembly of the gas compression valve group.

[0026] The figure shows the sectional view of the large piston assembly of the gas compression valve group. Figure 6 The figure shows the sectional view of the large piston assembly of the gas compression valve group. Figure 4 The figure shows the sectional view of the large piston assembly of the gas compression valve group.

[0027] The purpose of the present application, the functional characteristics and the advantages will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are merely intended to explain the present application, and are not intended to limit the present application.

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0031] In addition, the descriptions of "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person of ordinary skill in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0032] Please refer to Figures 1-3 The present application provides a kind of gas compression equipment for automobile air suspension. The gas compression equipment for automobile air suspension includes gas compression valve group 1, drying filter component 3 and motor assembly 5. By the motor assembly 5 drive the crank connecting rod 14 rotation, the crank connecting rod 14 drives the big piston assembly 12 and the small piston assembly 13 reciprocate up and down.

[0033] Please refer to Figures 2-6The gas compression valve group 1 comprises a piston shell 11, a large piston assembly 12 and a small piston assembly 13 installed in the piston shell 11, a crank connecting rod 14 connecting the large piston assembly 12 and the small piston assembly 13, and a ventilation pipeline 15 connecting the large piston assembly 12 and the small piston assembly 13. The large piston assembly 12 and the small piston assembly 13 form a large piston chamber 16 and a small piston chamber 17 respectively in the piston shell 11. The ventilation pipeline 15 comprises a ventilation pipe 153 and two joints 151 connected to the ventilation pipe 153 respectively. The large piston assembly 12 is provided with a large ventilation passage 18 communicating with the large piston chamber 16, and the small piston assembly 13 is provided with a small ventilation passage 19 communicating with the small piston chamber 17. The two joints 151 are detachably inserted into the large piston assembly 12 and the small piston assembly 13 respectively, and the ventilation pipe 153 simultaneously communicates with the large ventilation passage 18 and the small ventilation passage 19 to pass the gas in the large piston chamber 16 into the small piston chamber 17, and the gas in the small piston chamber 17 is passed into the drying filter assembly 3. Therefore, the large piston chamber 16 and the small piston chamber 17 are connected by the ventilation pipeline 15 to communicate with each other. The joint 151 of the ventilation pipeline 15 is detachably connected to the large piston assembly 12 and the small piston assembly 13 to form the communication between the chambers, without the need to open a ventilation hole on other associated components. The structure is simplified, the manufacturing process is simple, and the sealing level requirement can be reduced. When repairing, the joint 151 is directly disassembled and the ventilation pipeline 15 is replaced, which is more convenient for maintenance.

[0034] Threaded holes are formed on the large piston assembly 12 and the small piston assembly 13, and a through hole penetrating the two end faces of the joint 151 is formed in the interior of the joint 151, and one end is threaded. The joint 151 is connected to the threaded hole by screwing. The joint 151 is detachably connected to the large piston assembly 12 and the small piston assembly 13, and assembly and disassembly are more convenient.

[0035] Specifically, in the embodiment, the ventilation pipe 153 is a hose. The material of the hose is relatively soft, which can adapt to the structure of the piston shell 11 without causing hard interference, thereby improving the adaptability of the structure. Preferably, the ventilation pipe 153 is a PVC hose. The PVC hose has good heat resistance, toughness and ductility, and has certain hardness and tensile strength, and has superior safety performance on the pipeline.

[0036] It can be understood that, preferably, the joint 151 is a quick connector. The quick connector is a joint 151 that can realize pipeline connection or disconnection without tools, and is an air quick connector 151.

[0037] AsFigure 3 As shown, further, the large piston assembly 12 includes a large piston rod 121, a large piston head 123, a large connecting frame 125 for fixing the large piston head 123, and a large bearing seat 127 connected to the large connecting frame 125, the crank connecting rod 14 is connected to the bearing in the large bearing seat 127, and the large air passage 18 passes through the large piston rod 121 and the large piston head 123. One of the two joints is connected to the large piston rod 121, the large piston rod 121 is connected to the large piston head 123, the large piston head 123 is embedded in the large piston chamber 16, and the large piston rod 121 drives the large piston head 123 to move up and down in the large piston chamber 16 under the drive of the crank connecting rod 14.

[0038] As shown in the figure, the small piston assembly 13 includes a small piston rod 131, a small piston head 133, a small connecting frame 135 for fixing the small piston head, and a small bearing seat 137 connected to the small connecting frame 135, the crank connecting rod is connected to the bearing in the small bearing seat 137, and the small air passage 19 passes through the small piston rod 131 and the small piston head 133, the other of the two joints 151 is connected to the small piston rod 131. The small piston rod 131 is connected to the small piston head 133, the small piston head 133 is embedded in the small piston chamber 17, and the small piston rod 131 drives the small piston head 133 to move up and down in the small piston chamber 17 under the drive of the crank connecting rod 14. Figure 3 As can be understood, since the large piston rod 121 and the large piston head 123, and the small piston rod 131 and the large air passage 18 are vertically arranged, the large air passage 18 and the small air passage 19 are both L-shaped.

[0039] Specifically, the drying and filtering assembly 3 is arranged above the motor assembly 5, and the drying and filtering assembly 3 communicates with the small piston chamber 17. The compressed gas in the small piston chamber 17 enters the air bag of the automobile air suspension after entering the drying and filtering assembly 3.

[0040] Further, the crank connecting rod 14 is connected to the output shaft of the motor assembly 5 through a deep groove ball bearing. The deep groove ball bearing has the characteristics of small friction resistance and high speed, and can be used on machine parts that bear radial load or combined load of radial and axial action, or on machine parts that bear axial load. The crank connecting rod is connected to the output shaft of the motor assembly 5 through a deep groove ball bearing, which can greatly improve the stability of the structure transmission.

[0041]

[0042] ​The gas compression valve group 1 and the gas compression device for automobile air suspension provided by the application connect the large piston chamber 16 and the small piston chamber 17 in communication through the air pipe 15, wherein the joint 151 of the air pipe 15 is detachably connected to the large piston assembly 12 and the small piston assembly 13 to form the communication between the chambers, without needing to open an air hole on other associated components, and the structure is simplified, the manufacturing process is simple, and the sealing level requirement can be reduced accordingly; and when maintaining, the joint 151 is directly disassembled, and the air pipe 15 is replaced, so that the maintenance is more convenient.

[0043] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A gas compression valve assembly, characterized in that, Includes a piston housing, a large piston assembly mounted within the piston housing, and Small piston assembly, crank connecting rod connecting the large piston assembly and the small piston assembly, and venting conduit connecting the large piston assembly and the small piston assembly; The large piston assembly and the small piston assembly respectively form a large piston chamber and a small piston chamber within the piston housing; The ventilation duct includes a ventilation pipe and two connectors connected to both ends of the ventilation pipe. The large piston assembly has a large ventilation channel communicating with the large piston chamber, and the small piston assembly has a small ventilation channel communicating with the small piston chamber. The two connectors are detachably inserted into the large piston assembly and the small piston assembly, respectively, and the ventilation pipe is simultaneously connected to the large ventilation channel and the small ventilation channel. The large piston assembly includes a large piston rod, a large piston head, a large connecting frame for fixing the large piston head, and a large bearing housing connected to the large connecting frame. The crank connecting rod is connected to a bearing in the large bearing housing. The large air passage passes through the large piston rod and the large piston head. A connector is connected to the large piston rod. The small piston assembly includes a small piston rod, a small piston head, a small connecting bracket for fixing the small piston head, and a small bearing seat connected to the small connecting bracket. The crank connecting rod is connected to a bearing in the small bearing seat. The small vent passage passes through the small piston rod and the small piston head. A connector is connected to the small piston rod.

2. The gas compression valve assembly according to claim 1, characterized in that, The large piston assembly and the small piston assembly are provided with threaded holes, and one end of the connector is threaded, and the connector is connected to the threaded hole by threads.

3. The gas compression valve assembly according to claim 1, characterized in that, The venting tube is a flexible tube.

4. The gas compression valve assembly according to claim 3, characterized in that, The vent pipe is a PVC flexible hose.

5. The gas compression valve assembly according to claim 1, characterized in that, The connector is a quick connector.

6. The gas compression valve assembly according to claim 1, characterized in that, Both the large ventilation channel and the small ventilation channel are L-shaped.

7. A gas compression device for automotive air suspension comprising a gas compression valve assembly as described in any one of claims 1-6, characterized in that, It also includes a drying and filtering assembly and a motor assembly. The motor assembly drives the crank connecting rod to rotate, and the crank connecting rod drives the large piston assembly and the small piston assembly to reciprocate up and down. The drying and filtering assembly is connected to the small piston chamber.

8. The gas compression device for automotive air suspension according to claim 7, characterized in that, The crank connecting rod is connected to the output shaft of the motor assembly via a deep groove ball bearing.

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