Motor for air suspension and air compression system

Abstract

The utility model discloses a motor for an air suspension and an air compression system. The motor comprises a shell, an end cover, a rotating shaft and a stator assembly, the end cover, the rotating shaft and the stator assembly are arranged in the shell, the two ends of the shell are provided with an open end and a closed end, and the end cover is arranged close to the open end; the motor further comprises a power supply connecting part; the power supply connecting part is arranged on the end cover and extends out of the shell; the power supply connecting part is connected to a power supply in a male and female terminal connecting mode and comprises a current output end and a power supply connecting terminal, the current output end is arranged on the inner side of the end cover, and the power supply connecting terminal is arranged on the outer side of the end cover. According to the technical scheme, the motor and the air compression system can be electrified without a fly wire, and the motor can be fixed without designing a mounting hole, so that the assembly efficiency of the motor is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of air suspension, in particular to a motor and an air pressure system for an air suspension. Background Art

[0002] The air suspension system is used to increase vehicle stability at high speeds or maneuverability on complex roads. It primarily uses an air compression system to provide dry, compressed air to the air suspension system, which is then fed into air springs or air tanks to adjust the vehicle's height. The air compressor is driven by a motor to compress the air.

[0003] For example, the prior art CN221272482U discloses an air supply device, such as Figure 1 As shown, it includes a reversing valve assembly 2, an air supply assembly 1, a motor 11 connected to the reversing valve assembly 2 and the air supply assembly 1, respectively, and an electronic control unit 4. The motor 11 is disposed between the reversing valve assembly 2 and the air supply assembly 1, and the electronic control unit 4 for controlling the air supply assembly is disposed on one side of the reversing valve assembly 2. However, this prior art does not disclose the motor structure, particularly the power wiring method. Existing air suspension motors use external flying leads for power connections, which must be routed from the periphery of the motor. This can easily lead to motor burnout due to wire damage, water ingress, and other issues.

[0004] Patent CN220586106U discloses an air suspension motor, which provides a plurality of motor mounting bolt holes on the motor housing. Therefore, this prior art increases the number of installation steps when fixing the motor. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the present invention provides the following technical solutions:

[0006] A motor for air suspension includes a housing, and an end cover, a rotating shaft, and a stator assembly arranged in the housing. The two ends of the housing are provided with an open end and a closed end, and the end cover is arranged near the open end; the motor also includes a power connection part; the power connection part is arranged on the end cover and extends out of the housing; the power connection part is connected to the power supply using a male and female terminal connection method, and includes a current output end and a power access terminal, the current output end is arranged on the inner side of the end cover, and the power access terminal is arranged on the outer side of the end cover.

[0007] Preferably, the power input terminal is a power female terminal.

[0008] Preferably, a connecting portion is provided at one end of the rotating shaft, an open groove is provided at the other end of the rotating shaft, and a gas channel is provided in the rotating shaft.

[0009] Preferably, the closed end is provided with a first through hole, and the end cover is provided with a second through hole.

[0010] Preferably, the closed end is further provided with a first accommodating groove, and the end cover is further provided with a second accommodating groove; the first through hole is provided on the end face of the first accommodating groove, and the second through hole is provided on the end face of the second accommodating groove; the first accommodating groove and the second accommodating groove are respectively provided with a first bearing and a second bearing, and the rotating shaft passes through the first bearing and the second bearing.

[0011] Preferably, the motor further includes a corrugated spring piece, which is provided between the second bearing and the second accommodating groove, and abuts against the outer ring of the second bearing.

[0012] Preferably, a carbon brush, an inductor and a copper busbar are further provided in the end cover, and a reinforcing rib and an end cover groove are provided on the outer circumference of the end cover.

[0013] An air compression system includes a gas valve, an air compressor, and an electronic control unit, wherein the electronic control unit is arranged below the gas valve; and the above-mentioned motor; the motor is arranged between the gas valve and the air compressor; the electronic control unit is provided with a power output terminal, and the power output terminal is connected to the power input terminal.

[0014] Preferably, the air compression system further comprises a fastener, which is provided between the air compressor and the gas valve, and two ends of the fastener are respectively connected to the air compressor and the gas valve.

[0015] Preferably, a third through hole is provided on the gas valve, and the power input terminal extends into the third through hole and is connected to the power output terminal; the power output terminal is a power male terminal.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) By designing a power connection part in the motor and using male and female terminals to connect to the power supply, there are no flying wires in the motor and air compression system, which improves the safety factor of the motor and air compression system;

[0018] (2) By placing the motor between the air compressor and the gas valve and fixing the compressor and the gas valve, the motor is fixed, so that the motor can be fixed without the need for mounting holes, which greatly simplifies the assembly process of the motor. At the same time, this assembly method also makes the dynamic balance performance of the motor good, and the compressor and the valve body can support the motor, reducing the vibration and noise of the motor during operation, making the motor run smoothly, reducing the wear of bearings and other components, and improving the efficiency of the motor.

[0019] (3) A through hole is provided in the rotating shaft so that the gas compression cylinder is connected to the gas valve, and the heat generated by the operation of the motor is taken away by the flow of gas, thereby improving the working efficiency of the motor;

[0020] (4) The opening groove on the end face of the shaft allows the motor to be repaired even when it is not installed;

[0021] (5) Four sets of carbon brushes are set in the end cover, and ultrasonic welding of carbon brushes is used to improve welding sealing; and the copper busbar, inductor and carbon brushes are set in the end cover by injection molding, so that the parts are not easily fallen off due to the vibration of the motor, thereby extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the structural diagram of the existing air compression system;

[0023] Figure 2 This is a three-dimensional structural diagram of the motor for this application;

[0024] Figure 3 This is a cross-sectional structural diagram of the motor for this application;

[0025] Figure 4 This application is located on the motor end face schematic diagram;

[0026] Figure 5 This is a schematic diagram of the end cover structure of this application;

[0027] Figure 6 A three-dimensional diagram of the air compression system for this application;

[0028] Figure 7 This is a cross-sectional diagram of the air compression system of this application.

[0029] Reference numerals: 1-air supply device, 2-reversing valve device, 4-electronic control unit, 11-motor in the prior art;

[0030] 100-housing, 200-end cover, 300-rotating shaft, 400-stator assembly, 500-rotor assembly, 600-power connection part, 110-open end, 120-closed end, 140-first accommodating groove, 150-first bearing, 210-second through hole, 220-second accommodating groove, 230-second bearing, 240-copper busbar, 250-inductor, 260-carbon brush, 270-end cover groove, 280-mounting surface, 310-connecting part, 320-opening groove, 330-gas channel, 610-current output end, 620-power access terminal, 700-corrugated spring piece, 10-motor in this application, 810-gas valve, 820-air compressor, 830-fastener. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1:

[0033] An air suspension motor 10, such as Figure 2-6 As shown, it includes a housing 100, an end cover 200, a rotating shaft 300, a stator assembly 400, a rotor assembly 500 and a power connection portion 600. Figure 7 As shown, the housing 100 includes an open end 110 and a closed end 120. The closed end 120 is used to connect to the air compressor in the air suspension system, and the open end 110 is used to connect to the gas valve 810 in the air suspension system. Figure 3 As shown, the end cover 200 is arranged in the shell and close to the open end 110 of the shell 100; the stator assembly 400 and the rotor assembly 500 are arranged in the shell 100; the rotating shaft 300 is arranged in the shell and passes through the stator assembly 400 to provide mechanical energy to the air compressor for air compression; one end of the rotating shaft 300 is provided with a connecting portion 310 for connecting to the air compressor; the power connection portion 600 is provided on the end cover 200 and extends out of the shell 100, which is used to connect to an external power source.

[0034] Specifically, if Figure 3 As shown, the power connection portion 600 includes a current output terminal 610 and a power input terminal 620. The current output terminal 610 is located within the housing 100. The current input terminal within the motor 10, such as the motor lead, is connected to the current output terminal 610. The power input terminal 620, which uses a male-female terminal connection method to connect to the power source, thereby energizing the motor 10, is located outside the end cap 200. To improve connection efficiency, the power input terminal 620 is designed as a female power terminal. By connecting the power input terminal 620 to the corresponding power terminal, the motor 10 can be powered.

[0035] This design allows the motor 10 to be powered without extending the leads from the housing 100, thus preventing damage to the motor 10 caused by broken leads, water ingress, and other issues. Furthermore, to provide a seal, the power connector 600 and the end cap 200 are connected by integral injection molding.

[0036] At the same time, if Figure 3 、 Figure 4As shown, the connecting portion 310 extends from the closed end 120 of the housing 100. The other end of the rotating shaft 300 is provided with an open groove 320 for servicing the motor 10 when not installed. A tool is used to rotate the open groove 320 to determine whether the motor 10 can rotate normally when not powered and whether there is any sticking. The connecting portion 310 can be connected to the air compressor in a variety of ways, preferably using a detachable threaded connection or interference fit to facilitate equipment maintenance.

[0037] In addition, if Figure 3-5 As shown, the closed end 120 of the housing 100 is provided with a first through-hole; the end cap 200 is provided with a second through-hole 210 corresponding to the position of the first through-hole. The rotating shaft 300 passes through the first and second through-holes 210, thereby positioning the rotating shaft. Furthermore, to prevent wear on the housing during rotation of the rotating shaft, a first receiving groove 140 and a second receiving groove 220 are provided inside the closed end 120 of the housing 100 and the end cap 200, respectively. A first bearing 150 is provided in the first receiving groove 140, and a second bearing 230 is provided in the second receiving groove 220. The first and second through-holes 210 are provided on the end surfaces of the first and second receiving grooves 140, 220, respectively. The rotating shaft 300 is connected to the housing 100 via the first and second bearings 150, 230. This design not only reduces friction between the rotating shaft 300 and the housing 100 but also limits radial movement of the rotating shaft 300, thereby increasing its operational stability.

[0038] During operation, the motor 10 is powered by connecting the power input terminal 620 to the corresponding external power terminal, and then the stator assembly 400 rotates, converting electrical energy into mechanical energy and driving the rotating shaft 300 to move, thereby making the air compressor in the air suspension system work to complete the compression of the air.

[0039] Example 2:

[0040] This embodiment differs from embodiment 1 in that Figure 3 and Figure 5 As shown, the motor 10 further includes a corrugated spring piece 700 ; the rotating shaft 300 further includes a gas channel 330 ; and the end cover 200 further includes a copper bus 240 , an inductor 250 and a carbon brush 260 .

[0041] like Figure 7 As shown, the air passage 330 connects the rotating shaft 300 to the air valve 810 in the air compression system and the air in the air compressor. This allows air to be introduced into the air compression system. Furthermore, when external air flows into the motor 10, the flow of air removes heat generated by the motor 10, thereby improving the operating efficiency of the motor 10.

[0042] The corrugated spring piece 700 is disposed between the second bearing 230 and the second receiving groove 220, and the corrugated spring piece 700 is pressed against the outer ring of the second bearing 230 to prevent the outer ring of the second bearing 230 from rotating, thereby reducing the movement of the carbon brush in the end cover 200; and at the same time reducing the noise generated when the motor 10 is running.

[0043] like Figure 5 As shown, four groups of carbon brushes 260 are provided in the end cover 200, and the carbon brushes 260 are connected to the end cover 200 by ultrasonic welding. Compared with the two carbon brushes of an ordinary motor, this embodiment provides four carbon brushes in the motor 10, so that the current density generated by the carbon brushes is low, the load is reduced, the wear of the carbon brushes is reduced, and the replacement frequency and maintenance cost are reduced. Ultrasonic welding can achieve seamless welding to ensure water and air tightness; the conductivity after welding is good, the welding consistency is high and the resistance system is low; and because an angle is formed around the molten core between the two plates, the tensile strength and fatigue strength of the weld joint are low, thereby reducing the load capacity of the weld and extending the life of the motor 10;

[0044] The copper busbar 240 and inductor 250 are injection molded into the end cap 200. The copper busbar 240, inductor 250, and carbon brush 260 are sequentially connected to achieve electrical conductivity. Compared to thermal resistance welding, ultrasonic welding reduces the weight of the end cap. Furthermore, injection molding the copper busbar 240 and inductor 250 provides a more stable connection to the end cap 200, preventing these components from falling off due to vibration from the motor 10.

[0045] In addition, reinforcing ribs and end cap grooves 270 are provided on the outer circumference of the end cap 200. The reinforcing ribs provide support. The end cap grooves 270 are used to accommodate sealing rings or sealant to seal the connection between the end cap 200 and the housing 100, thereby preventing gas leakage within the motor 10. Furthermore, one or more mounting surfaces 280 are provided on the outer end surface of the end cap for mounting sealing rings or sealant to prevent gas leakage at the connection with other components in the air compression system.

[0046] Example 3:

[0047] An air compression system, such as Figure 6-7As shown, it includes a gas valve 810, an air compressor 820, a power output terminal, and the motor 10 in the above embodiment. The motor 10 is arranged between the gas valve 810 and the air compressor 820. An electronic control unit is provided below the gas valve 810. The electronic control unit is used to control the state of the gas valve 810. The electronic control unit is provided with a power output terminal, which cooperates with the power input terminal 620 in the motor 10. Preferably, the power output terminal is a power male terminal.

[0048] Furthermore, a third through hole is provided at a corresponding position of the gas valve 810. When connected, the motor 10 can be powered by passing the power supply terminal 620 through the third through hole.

[0049] Since the power supply of the electronic control unit comes from the entire vehicle, no additional leads are required. Therefore, by setting the power output terminal in the electronic control power supply, the air compression system can achieve air compression without flying wires.

[0050] In addition, the air compression system also includes a fastener. The fastener 830 is provided between the air compressor 820 and the gas valve 810. The gas valve 810 and the air compressor 820 are connected through the two ends of the fastener 830, thereby fixing the gas valve 810, the air compressor 820 and the motor 10 together. Specifically, the motor 10 is clamped and positioned only by adjusting the position of the air compressor 820 and the gas valve 810 on the fastener 830. This connection method simplifies the housing structure of the motor 10, and the motor 10 can be installed and fixed without designing additional mounting holes on the housing; it also improves the stability of the operation of the motor 10.

[0051] At the same time, to ensure the airtightness of the air compression system, corresponding mounting end surfaces are provided at the connection points of each component for inserting sealing rings or sealants. For example, when the connection portion of the rotating shaft 300 is connected to the connection hole of the air compressor, a sealing ring is provided at the connection point to seal the first receiving groove 140 and the air compressor 820; when the power supply terminal 620 is connected to the gas valve 810, a mounting end surface for accommodating a sealant or sealant is provided on the power supply connection portion to prevent the high-pressure gas in the motor 10 from entering the electronic control unit and causing damage.

[0052] When working, Figure 7As shown, the power input terminal 620 of the power connection part in the motor 10 is extended into the corresponding through hole on the gas valve 810 and connected to the power output terminal. After the motor 10 is powered on, the external air flows into the gas channel 330 of the rotating shaft 300 through the gas channel 840 on the gas valve 810 and enters the air compressor. The stator assembly 400 drives the rotating shaft 300 to move so that the air compressor works. The compressed air flows into the gas valve 810 through the gas pipeline, and the electronic control unit 830 controls the working state of the gas valve 810 so that the air suspension system adjusts the vehicle body height.

[0053] In summary, the present application reduces the number of mounting holes in the motor 10 by improving the structure of the motor 10 and the air compression system, thereby greatly improving the air tightness of the motor 10; at the same time, by providing a power connection part 600 in the motor 10 and arranging the power output terminal in the electronic control unit, there are no additional flying wires in the motor 10 and the air compression system, thereby greatly improving the safety of the motor 10 and the air compression system.

[0054] It should be noted that the technical features in the above-mentioned embodiments 1 to 3 can be combined in any way, and the technical solutions formed by the combination all fall within the scope of protection of this application. In this article, terms such as "including", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0055] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor for air suspension, comprising a housing, an end cover, a rotating shaft, and a stator assembly disposed within the housing, wherein the housing has an open end and a closed end at both ends, and the end cover is disposed near the open end; The motor also includes a power connection part; the power connection part is arranged on the end cover and extends out of the housing; the power connection part is connected to the power supply using a male and female terminal connection method, and includes a current output end and a power input terminal, the current output end is arranged on the inner side of the end cover, and the power input terminal is arranged on the outer side of the end cover.

2. The motor according to claim 1, wherein The power supply input terminal is a power female terminal.

3. The motor according to claim 2, characterized in that A connecting portion is provided at one end of the rotating shaft, an opening groove is provided at the other end of the rotating shaft, and a gas channel is provided in the rotating shaft.

4. The motor according to claim 3, wherein The closed end is provided with a first through hole, and the end cover is provided with a second through hole.

5. The motor according to claim 4, characterized in that The closed end is also provided with a first accommodating groove, and the end cover is also provided with a second accommodating groove; the first through hole is provided on the end face of the first accommodating groove, and the second through hole is provided on the end face of the second accommodating groove; the first accommodating groove and the second accommodating groove are respectively provided with a first bearing and a second bearing, and the rotating shaft passes through the first bearing and the second bearing.

6. The motor according to claim 5, characterized in that The motor further includes a corrugated spring piece, which is disposed between the second bearing and the second accommodating groove and abuts against the outer ring of the second bearing.

7. The motor according to claim 4, wherein: Carbon brushes, inductors and copper bars are also provided in the end cover, and reinforcing ribs and end cover grooves are provided on the outer circumference of the end cover.

8. An air compression system comprising a gas valve, an air compressor and an electronic control unit, wherein the electronic control unit is arranged below the gas valve; characterized in that: The air compression system further comprises a motor as claimed in any one of claims 1 to 7; the motor is arranged between the gas valve and the air compressor; a power output terminal is provided in the electronic control unit, and the power output terminal is connected to the power input terminal.

9. The air compression system according to claim 8, wherein: The air compression system further includes a fastener, which is arranged between the air compressor and the gas valve, and two ends of the fastener are respectively connected to the air compressor and the gas valve.

10. The air compression system according to claim 9, wherein: The gas valve is provided with a third through hole, and the power input terminal extends into the third through hole and is connected to the power output terminal; the power output terminal is a power male terminal.

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