Air suspension compressor and air supply unit

Abstract

The utility model relates to the technical field of air suspension, and proposes an air suspension compressor and air supply unit, including a stator, a rotor, a shell and a compression assembly, wherein the rotor is arranged on the stator, and an air passage is arranged on the rotor, and the air passage communicates with both ends of the stator; the shell is fixed on the stator, and an air outlet is arranged on the shell, and one end of the rotor extends into the shell so that the air passage communicates with the inside of the shell; the compression assembly is arranged in the shell and is transmission-connected with the rotor, and the compression assembly is used to discharge the air in the shell out of the shell through the air outlet. The air suspension compressor and air supply unit, by arranging the air passage on the rotor, forms a negative pressure in the shell when the compression assembly is working, and transports air from one end of the motor to the shell at the other end, and takes away part of the rotor heat during the air transmission process, so as to realize the active heat dissipation of the compressor as a whole, thereby improving the stability of the air suspension system.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspension, in particular to an air suspension compressor and an air supply unit. Background Art

[0002] Automotive air suspension is an advanced suspension system that uses air springs instead of traditional steel springs to provide better ride comfort and vehicle handling. The air suspension system adjusts the height and hardness of the suspension through an air compressor, air bags, air storage tanks, and an electronic control unit. Car owners can adjust the vehicle height according to road conditions and driving needs to optimize the vehicle's performance under different road conditions. The main advantages of air suspension include a smoother driving experience, adjustable vehicle height, and improved vehicle stability. When driving at high speeds, lowering the vehicle body can reduce air resistance and improve fuel efficiency; when driving at low speeds or off-road, raising the vehicle body can increase ground clearance and avoid chassis damage. In addition, the air suspension system can automatically adjust the suspension height according to the vehicle load to keep the vehicle body level, thereby improving driving safety.

[0003] In an air suspension system, the compressor is the main air supply part. For example, an air compressor in an air suspension system with publication number CN110067731A discloses a compressor with good sealing effect. The compressor is mainly used as the air supply part in the air suspension system.

[0004] However, in the prior art, in order to make the air supply unit highly integrated and reduce space occupancy, the heat dissipation of the driving part of the compressor, that is, the motor, is often adversely affected. During the high-frequency suspension adjustment process, poor heat dissipation of the compressor will directly affect the stability of the air suspension system. Utility Model Content

[0005] In view of this, the utility model proposes an air suspension compressor and an air supply unit. By arranging an air duct on the rotor, when the compression component is working, a negative pressure is formed in the outer shell, and air is transported from one end of the motor to the shell at the other end. During the air transmission process, part of the rotor heat is taken away, thereby realizing active heat dissipation of the compressor as a whole, thereby improving the stability of the air suspension system.

[0006] The technical solution of the utility model is achieved in this way:

[0007] On the one hand, the utility model provides an air suspension compressor, including a stator, a rotor, a housing and a compression assembly, wherein:

[0008] The rotor is arranged on the stator, and an air passage is arranged on the rotor, and the air passage communicates with two ends of the stator;

[0009] The housing is fixed on the stator, and an air outlet is provided on the housing, and one end of the rotor extends into the housing so that the air passage is connected with the interior of the housing;

[0010] The compression assembly is arranged in the shell and is drivingly connected with the rotor. The compression assembly is used to discharge the air in the shell out of the shell through the air outlet.

[0011] On the basis of the above technical solution, preferably, the rotor includes a rotating shaft, which is arranged on the stator through a bearing, and one end of the rotating shaft extends into the outer shell to be transmission-connected to the compression assembly, and the air duct is arranged on the axis of the rotating shaft.

[0012] Further preferably, the compression assembly comprises a crank, the crank is disposed in the housing and fixed to the end of the rotating shaft, and a through opening is provided on the crank, and the through opening is used to connect the airway with the interior of the housing.

[0013] On the basis of the above technical solution, preferably, it further includes a first sealing member, the housing is provided with an installation opening, the stator is inserted into the installation opening, the first sealing member is embedded in the installation opening and abuts against the outside of the stator to seal the connection between the stator and the housing.

[0014] On the basis of the above technical solution, preferably, the stator comprises a housing and a cover, wherein:

[0015] The casing is inserted into the outer shell and fixed thereto, the rotor is arranged in the casing, and the side of the casing away from the outer shell is opened;

[0016] The cover is arranged on the opening side of the casing to seal the opening side of the casing, and one end of the rotor away from the outer shell is inserted into the cover and connected with the cover through a bearing.

[0017] Further preferably, a communication port is provided on the sealing cover, and the communication port is connected to the airway.

[0018] On the other hand, the utility model provides an air suspension air supply unit, comprising the above-mentioned air suspension compressor.

[0019] On the basis of the above technical solution, preferably, it also includes a gas distribution valve body, which is fixed on the side of the stator away from the outer shell, and is provided with a plurality of air inlets and air supply ports, the air inlets are connected to the air duct, and the air supply ports are connected to the air outlet.

[0020] Further preferably, it further comprises a second sealing member, which is arranged on the stator and abuts against the gas distribution valve body to seal the connection between the stator and the gas distribution valve body.

[0021] Further preferably, a connecting pipe is included, a connecting port is provided on the gas distribution valve body, the connecting port is connected with the gas supply port, and two ends of the connecting pipe are respectively fixed to the shell and the gas distribution valve body to connect the connecting port with the gas outlet.

[0022] The air suspension compressor and air supply unit of the utility model have the following beneficial effects compared with the prior art:

[0023] (1) By providing an air passage on the rotor, when the compression assembly is working, negative pressure is formed in the housing, air is transported from one end of the motor to the housing at the other end, and part of the rotor heat is taken away during the air transmission process, thereby achieving active heat dissipation of the compressor as a whole, thereby improving the stability of the air suspension system;

[0024] (2) By integrating the gas distribution valve body and the motor in one piece, and making the air passage directly connected to the air path on the gas distribution valve body through the connecting port, the setting of the connecting pipeline is reduced. At the same time, there is no need to specially set up a bracket to fix the gas distribution valve body and the compressor, which effectively improves the integration of the gas supply unit and reduces its installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional diagram of the air suspension compressor of the utility model;

[0027] Figure 2 It is an overall cross-sectional view of the air suspension compressor of the utility model;

[0028] Figure 3 A cross-sectional view of a motor of an air suspension compressor of the utility model;

[0029] Figure 4 This is a diagram showing the internal structure of the shell of the air suspension compressor of the utility model;

[0030] Figure 5 A three-dimensional diagram of the shell of the air suspension compressor of the utility model;

[0031] Figure 6 It is a three-dimensional diagram of the gas distribution valve of the air suspension air supply unit of the utility model. DETAILED DESCRIPTION

[0032] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-5 As shown, the air suspension compressor of the utility model comprises a stator 1 , a rotor 2 , a housing 3 , a compression assembly 4 and a first sealing member 5 .

[0034] The compressor is structurally divided into a motor and a pump body, wherein the stator 1 and the rotor 2 are components of the motor, and the housing 3 and the compression assembly 4 are components of the pump body. The motor drives the pump body to perform reciprocating motion of the plunger to achieve air transmission and compression, thereby providing compressed air for the air suspension.

[0035] The stator 1 is the fixed part of the motor and can be directly fixed on the vehicle frame through a bracket or other connecting structures.

[0036] The rotor 2 is arranged on the stator 1, and an air passage 201 is arranged on the rotor 2. The air passage 201 connects the two ends of the stator 1. The rotor 2 is the power output part of the motor. The piston inside the compressor pump body can be driven by the rotor 2 to move, thereby driving the pump body to realize air compression operation.

[0037] The shell 3 is fixed on the stator 1, and an air outlet 301 is provided on the shell 3. One end of the rotor 2 extends into the shell 3 so that the airway 201 is connected with the interior of the shell 3. An inner cavity is provided on the shell 3, and one end of the rotor 2 extends into the inner cavity of the shell 3. At the same time, the air outlet 301 is provided on the outside of the shell 3 and connected with the inner cavity of the shell 3, thereby forming an air path structure that passes through the motor rotor 2 and supplies air to the outside.

[0038] The compression component 4 is arranged in the shell 3 and is connected to the rotor 2 in a transmission manner. The compression component 4 is used to discharge the air in the shell 3 out of the shell 3 through the air outlet 301. When the rotor 2 rotates, it will drive the compression component 4 to perform reciprocating motion of the plunger in the shell 3, thereby compressing the air in the shell 3 and discharging it to the air outlet 301. In this process, a negative pressure is formed in the shell 3, and the outside air can flow into the shell 3 through the airway 201 to flow and take away part of the heat on the rotor 2 when passing through the airway 201. Correspondingly, when the rotor 2 rotates at a faster speed, the air flow rate in the airway 201 is also faster, and more heat can be taken away, thereby realizing active heat dissipation and adaptive adjustment inside the motor.

[0039] In this embodiment, the rotor 2 includes a rotating shaft 21 , which is disposed on the stator 1 via a bearing and has one end extending into the housing 3 to be transmission-connected to the compression assembly 4 , and the air passage 201 is disposed on the axis of the rotating shaft 21 .

[0040] It should be noted that the motor can be a brushless motor or an AC motor, but no matter which type of motor is used, its shaft 21 is a necessary component of the compressor motor rotor 2. Especially in the AC motor, the rotor 2 is the main heat-generating component. The air duct 201 set on the shaft 21 can effectively dissipate the heat of the rotor 2 to prevent the temperature of the rotor 2 from being too high.

[0041] In this embodiment, the compression assembly 4 includes a crank 41 , which is disposed in the housing 3 and fixed to the end of the rotating shaft 21 . The crank 41 is provided with a through opening 411 , which is used to connect the airway 201 with the interior of the housing 3 .

[0042] After the crank 41 is connected to the rotating shaft 21, when the rotating shaft 21 rotates, the crank 41 converts the unidirectional rotation into reciprocating linear motion through the rocker arm to push the plunger to reciprocate continuously. A one-way valve is set on the plunger to realize the compression of the air by the reciprocating activity of the plunger. The reciprocating motion of the plunger of the compression component 4 can be realized through the crank 41, and the compressed air is discharged from the air outlet 301. Since the crank 41 is eccentrically arranged on the rotating shaft 21, a through hole 411 can be opened on the crank 41 to connect with the airway 201, so that the air in the airway 201 will not be blocked by the crank 41 and cannot enter the shell 3.

[0043] As a preferred embodiment, a first sealing member 5 is further provided. An installation opening is provided on the housing 3, and the stator 1 is inserted into the installation opening. The first sealing member 5 is embedded in the installation opening and abuts against the outside of the stator 1 to seal the connection between the stator 1 and the housing 3.

[0044] The installation opening on the housing 3 is for integrally assembling the housing 3 and the motor stator 1. However, after assembly and insertion, due to the influence of assembly accuracy and production accuracy, it cannot be completely sealed, or air leakage may occur under a certain pressure. In order to avoid this situation, an annular groove is opened in the installation opening, and the first sealing member 5 is assembled in the annular groove to seal the connection. The first sealing member 5 is preferably a sealing ring.

[0045] In this embodiment, the stator 1 includes a casing 11 and a cover 12. The casing 11 is inserted into and fixed to the outer shell 3. The rotor 2 is arranged in the casing 11. The side of the casing 11 away from the outer shell 3 is open. The cover 12 is arranged on the open side of the casing 11 to seal the open side of the casing 11. The end of the rotor 2 away from the outer shell 3 is inserted into the cover 12 and is connected to the cover 12 through a bearing.

[0046] In actual production, the casing 11 is stamped, and this process will form an opening on one side of the casing 11, and the cover 12 is provided to seal the opening formed in the molding process of the casing 11. During assembly, in order to stably install the rotor 2 in the casing 11, a groove is provided on the cover 12, and a bearing is provided in the groove to connect the rotating shaft 21 on the rotor 2. Correspondingly, a corresponding groove is also provided on the side of the casing 11 away from the cover 12 to install the bearing, and the rotating shaft 21 is connected through the bearing. At the same time, the groove inside the casing 11 is reflected on the external structure, forming a protrusion on the casing 11, which is the part where the stator 1 is inserted into the outer shell 3, and the first sealing member 5 is sleeved outside the protrusion.

[0047] Correspondingly, a connecting port 121 is opened on the cover 12, and the connecting port 121 is connected to the air passage 201. Since the cover 12 seals the opening side of the casing 11 and one end of the rotating shaft 21 is inserted into the cover 12, it is necessary to open a connecting port 121 on the cover 12 so that the air passage 201 on the rotating shaft 21 can take in air.

[0048] like Figure 1-6 As shown, the air suspension air supply unit of the utility model includes the above-mentioned air suspension compressor.

[0049] Specifically, it also includes a gas distribution valve body 6, which is fixed on the side of the stator 1 away from the shell 3. The gas distribution valve body 6 is provided with a plurality of air inlets 601 and air supply ports 602. The air inlets 601 are connected to the air duct 201, and the air supply ports 602 are connected to the air outlet 301.

[0050] Multiple gas circuits and solenoid valves are arranged on the gas distribution valve body 6, and the opening and closing states of each gas circuit are controlled by the solenoid valve. In the present embodiment, one gas inlet 601 is arranged, and four gas supply ports 602 are arranged. Each gas supply port 602 is connected to the gas outlet 301 on the outer shell 3 through the gas circuit on the gas distribution valve body 6, thereby realizing the compressed gas supply.

[0051] In addition, a positioning groove is provided on the gas distribution valve body 6, and the motor stator 1 is installed through the positioning groove to realize the integrated integration of the gas distribution valve body 6 and the motor, and the air channel 201 is directly connected to the air path on the gas distribution valve body 6 through the connecting port 121, thereby reducing the setting of the connecting pipeline. At the same time, there is no need to specially set up a bracket to fix the gas distribution valve body 6 and the compressor, which effectively improves the integration of the gas supply unit and reduces the space occupied by its installation.

[0052] As a preferred embodiment, a second sealing member 7 is further provided. The second sealing member 7 is provided on the stator 1 and abuts against the gas distribution valve body 6 to seal the connection between the stator 1 and the gas distribution valve body 6 .

[0053] Under the influence of the process, the side of the cover 12 away from its groove will bulge outward. In order to reduce the space occupied by the motor, the bulge is inserted into the positioning groove of the gas distribution valve body 6 to connect the gas distribution valve body 6 with the air duct 201. In order to avoid air leakage during the air compression process, the second sealing member 7 is set on the outside of the bulge on the cover 12 to form a sealing structure with the positioning groove of the gas distribution valve body 6. The second sealing member 7 is preferably a rubber sealing ring.

[0054] As a preferred embodiment, it also includes a connecting pipe 8, a connecting port is opened on the gas distribution valve body 6, and the connecting port is connected to the gas supply port 602. The two ends of the connecting pipe 8 are respectively fixed to the outer shell 3 and the gas distribution valve body 6 to connect the connecting port with the gas outlet 301.

[0055] The gas distribution valve body 6 is connected to the housing 3 via a connecting pipe 8 so that compressed air can enter the gas distribution valve body 6 from the compressor. The connecting pipe 8 is preferably a stainless steel pipe because it needs to withstand a certain pressure.

[0056] In addition, a control module is provided on a side of the gas distribution valve body 6 away from the motor, and the control module integrates a plurality of solenoid valves embedded in the gas distribution valve body 6 to achieve rapid gas path switching and control.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air suspension compressor, characterized in that: It comprises a stator (1), a rotor (2), a housing (3) and a compression assembly (4), wherein: The rotor (2) is arranged on the stator (1), and an air passage (201) is arranged on the rotor (2), and the air passage (201) is connected to two ends of the stator (1); The outer shell (3) is fixed on the stator (1), and an air outlet (301) is provided on the outer shell (3); one end of the rotor (2) extends into the outer shell (3) so that the air passage (201) is in communication with the interior of the outer shell (3); The compression assembly (4) is arranged in the housing (3) and is drivingly connected to the rotor (2). The compression assembly (4) is used to discharge the air in the housing (3) out of the housing (3) through the air outlet (301).

2. The air suspension compressor according to claim 1, characterized in that: The rotor (2) comprises a rotating shaft (21), which is arranged on the stator (1) via a bearing and has one end extending into the housing (3) to be transmission-connected to the compression assembly (4), and the air passage (201) is arranged on the axis of the rotating shaft (21).

3. The air suspension compressor according to claim 2, characterized in that: The compression assembly (4) comprises a crank (41), wherein the crank (41) is arranged in the housing (3) and is fixed to the end of the rotating shaft (21), and a through opening (411) is provided on the crank (41), and the through opening (411) is used to connect the air passage (201) with the interior of the housing (3).

4. The air suspension compressor according to claim 1, characterized in that: It also includes a first sealing member (5); the housing (3) is provided with an installation opening, the stator (1) is inserted into the installation opening, the first sealing member (5) is embedded in the installation opening and abuts against the outside of the stator (1) to seal the connection between the stator (1) and the housing (3).

5. The air suspension compressor according to claim 1, characterized in that: The stator (1) comprises a housing (11) and a cover (12), wherein: The casing (11) is inserted into the outer shell (3) and fixed thereto, the rotor (2) is arranged in the casing (11), and the side of the casing (11) away from the outer shell (3) is opened; The cover (12) is arranged on the open side of the casing (11) to seal the open side of the casing (11); one end of the rotor (2) away from the outer shell (3) is inserted into the cover (12) and connected to the cover (12) via a bearing.

6. The air suspension compressor according to claim 5, characterized in that: The sealing cover (12) is provided with a communication port (121), and the communication port (121) is connected to the airway (201).

7. An air suspension air supply unit, characterized in that: The invention comprises the air suspension compressor according to any one of claims 1 to 6.

8. The air suspension air supply unit according to claim 7, characterized in that: It also comprises a gas distribution valve body (6), the gas distribution valve body (6) being fixed on a side of the stator (1) away from the housing (3), the gas distribution valve body (6) being provided with a plurality of air inlets (601) and air supply ports (602), the air inlets (601) being connected to the air passage (201), and the air supply ports (602) being connected to the air outlet (301).

9. The air suspension air supply unit according to claim 8, characterized in that: It also comprises a second sealing member (7), which is arranged on the stator (1) and abuts against the gas distribution valve body (6) to seal the connection between the stator (1) and the gas distribution valve body (6).

10. The air suspension air supply unit according to claim 8, characterized in that: It also includes a connecting pipe (8), the gas distribution valve body (6) is provided with a connecting port, the connecting port is connected to the gas supply port (602), and the two ends of the connecting pipe (8) are respectively fixed to the outer shell (3) and the gas distribution valve body (6) to connect the connecting port and the gas outlet (301).

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