Speed change gear box applied to electric air compressor

Abstract

The utility model relates to the technical field of air compressors, in particular to a speed change gear box applied to an electric air compressor, which comprises an auxiliary motor arranged on one side of the air compressor, and an output shaft of the auxiliary motor is matched with a rotating shaft of the air compressor. And when the vehicle is started, the output shaft can drive the rotating shaft to rotate, so that the quick response of the air compressor is realized. According to the air compressor, through the arrangement of the auxiliary motor, in the starting stage of the air compressor, the output shaft of the auxiliary motor can drive the rotating shaft of the air compressor, the rotating shaft can reach a certain working rotating speed within a short time, and therefore the defect that self-starting of the air compressor is delayed is overcome; and therefore, the air compressor can quickly enter a working state, and quick response is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a speed-changing gear box applied to an electric air compressor. Background Art

[0002] Air suspension can automatically adjust the height of the vehicle, thereby improving the vehicle's passability and stability, and has become a necessary configuration for high-end models. The vehicle increases its height by adding high-pressure gas to the air spring, and lowers its height by discharging the high-pressure gas in the air spring. Specifically, an air compressor is installed on the vehicle, which is used to provide high-pressure gas to the air spring.

[0003] Generally, air compressors are purchased or manufactured separately. Different air compressors have different startup response times. When used in vehicles, the air compressor is prone to delayed response after the vehicle is started, which affects the driving experience of the vehicle. Utility Model Content

[0004] In view of the above problems existing in the prior art, the utility model provides a speed-changing gear box applied to an electric air compressor.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A speed change gearbox for an electric air compressor, comprising an auxiliary motor disposed on one side of the air compressor, wherein the output shaft of the auxiliary motor matches the rotating shaft of the air compressor;

[0007] When the vehicle is started, the output shaft can drive the rotating shaft to rotate, so as to achieve a quick response of the air compressor.

[0008] Preferably, the output shaft is sleeved with a first gear; the rotating shaft is sleeved with a second gear meshing with the first gear;

[0009] The number of teeth of the first gear is not greater than the number of teeth of the second gear.

[0010] Preferably, the invention further comprises a connecting seat, wherein the connecting seat is provided with a first mounting hole and a second mounting hole which are interconnected;

[0011] The auxiliary motor and the air compressor are respectively arranged on two sides of the connecting seat, and the first gear extends into the first mounting hole, and the second gear extends into the second mounting hole.

[0012] Preferably, a side wall of the connecting seat facing the auxiliary motor is provided with a first mounting groove for the auxiliary motor to extend into; the auxiliary motor is fixedly installed in the first mounting groove by fastening bolts.

[0013] Preferably, a side wall of the connecting seat facing the air compressor is provided with a second mounting groove for the air compressor to extend into; the air compressor is fixedly installed in the second mounting groove by fixing bolts.

[0014] Preferably, the connecting base is provided with a plurality of threaded holes matched with the fastening bolts to realize the assembly of the connecting base with the auxiliary motors of different specifications.

[0015] Preferably, the connecting base is provided with a plurality of connecting holes matched with the fixing bolts to realize the assembly of the connecting base with the air compressors of different specifications.

[0016] Preferably, the first mounting hole and the second mounting hole are both provided with sealing members at their openings on the connecting seat;

[0017] In the assembled state, the sealing member can seal the first mounting hole and the second mounting hole.

[0018] Preferably, an annular groove is provided on the circumferential side wall of the rotating shaft, and the annular groove opens on the end of the rotating shaft facing the auxiliary motor;

[0019] A pressing piece is detachably provided on the rotating shaft, and the pressing piece can press and fix the second gear in the annular groove.

[0020] Preferably, a positioning hole is provided on the end surface of the rotating shaft facing the auxiliary motor; the clamping member is a press-fit bolt; when the press-fit bolt is installed in the positioning hole, the press-fit bolt presses and fixes the second gear in the annular groove.

[0021] The utility model has at least the following beneficial effects:

[0022] The present application sets an auxiliary motor so that during the startup phase of the air compressor, the output shaft of the auxiliary motor can drive the rotating shaft of the air compressor, so that the rotating shaft can reach a certain operating speed in a relatively short time, thereby overcoming the delay disadvantage of the air compressor self-starting, and then enabling the air compressor to quickly enter the working state and achieve rapid response. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure shows the assembly diagram of the auxiliary motor, the connecting seat and the air compressor in some embodiments of the present application;

[0024] Figure 2 The figure shows the assembly diagram of the auxiliary motor and the connecting seat in some embodiments of the present application;

[0025] Figure 3 A first partial cross-sectional view of the auxiliary motor, the connecting base and the air compressor after being assembled in some embodiments of the present application is shown;

[0026] Figure 4 A second partial cross-sectional view of the auxiliary motor, the connecting base and the air compressor after being assembled in some embodiments of the present application is shown.

[0027] The parts indicated by the numbers in the accompanying drawings are as follows:

[0028] 100, air compressor; 110, rotating shaft; 111, second gear; 112, annular groove; 113, press-fit bolt; 114, positioning hole; 200, auxiliary motor; 210, output shaft; 211, first gear; 300, connecting seat; 301, fastening bolt; 302, fixing bolt; 303, threaded hole; 304, connecting hole; 310, first mounting hole; 320, second mounting hole; 330, first mounting groove; 340, second mounting groove. DETAILED DESCRIPTION

[0029] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0030] like Figure 1-4 As shown, this embodiment provides a speed change gear box applied to an electric air compressor, which includes an auxiliary motor 200 arranged on one side of the air compressor 100, and the output shaft 210 of the auxiliary motor 200 cooperates with the rotating shaft 110 of the air compressor 100, so that the output shaft 210 of the auxiliary motor 200 can drive the rotating shaft 110 of the air compressor 100 when it rotates.

[0031] When the vehicle starts, the air compressor 100 starts automatically and the auxiliary motor 200 starts synchronously. During this process, the rotation of the output shaft 210 of the auxiliary motor 200 can drive the rotation of the rotating shaft 110 of the air compressor 100, so that the rotating shaft 110 can reach a certain operating speed in a relatively short time, thereby achieving a rapid response of the air compressor 100 when used in the vehicle, thereby avoiding affecting the driving experience of the vehicle.

[0032] It should be noted that the air compressor 100 itself has the function of self-starting. In the case where the auxiliary motor 200 is not provided, when the air compressor 100 is started, the rotating shaft 110 of the air compressor 100 can also rotate by itself and reach a certain working speed, but this process is relatively slow. When the air compressor 100 is used on a vehicle, the self-starting of the air compressor 100 has a certain delay. In this embodiment, the auxiliary motor 200 is provided so that during the start-up stage of the air compressor 100, the output shaft 210 of the auxiliary motor 200 can drive the rotating shaft 110 of the air compressor 100, thereby overcoming the delay disadvantage of the self-starting of the air compressor 100, and then enabling the air compressor 100 to quickly enter the working state and achieve rapid response. After the rotating shaft 110 of the air compressor 100 reaches a certain working speed, the auxiliary motor 200 can be turned off.

[0033] In some embodiments, a first gear 211 is fixedly mounted on the output shaft 210 of the auxiliary motor 200, and a second gear 111 is fixedly mounted on the rotating shaft 110 of the air compressor 100. In the installed state, the first gear 211 and the second gear 111 remain engaged, so that the rotation of the output shaft 210 can drive the rotating shaft 110, thereby achieving a rapid response of the air compressor 100.

[0034] In particular, when the vehicle is started, the air compressor 100 and the auxiliary motor 200 are started synchronously. During this process, the air compressor 100 starts automatically, causing the rotating shaft 110 to rotate, and the rotating shaft then drives the second gear 111 to rotate. At the same time, the output shaft 210 of the auxiliary motor 200 rotates, and the output shaft 210 drives the first gear 211 to rotate, and then the first gear 211 further drives the second gear 111 to rotate, so that the second gear 111 further drives the rotating shaft 110 to rotate, so that the rotating shaft 110 can reach the working speed in a short time, so that the air compressor 100 can achieve fast response and improve the driving experience of the vehicle.

[0035] It is understandable that the output shaft 210 and the rotating shaft 110 are matched through gear transmission, which can improve the stability and safety of the output shaft 210 driving the rotating shaft 110 to rotate. The first gear 211 and the second gear 111 can be helical gears or spur gears, as long as the output shaft 210 can drive the rotating shaft 110 to rotate, and there is no special limitation on this.

[0036] Furthermore, in order to reduce the cost of adding the auxiliary motor 200, the number of teeth of the first gear 211 is set to be no more than the number of teeth of the second gear 111. In this embodiment, the gear ratio of the first gear 211 to the second gear 111 is set to 1:2. Specifically, the number of teeth of the first gear 211 is 15, and the number of teeth of the second gear 111 is 30. When the auxiliary motor 200 assists the air compressor 100 to start automatically, the high speed of the output shaft 210 can be changed to a low speed, and the torque is greater. By controlling the gear ratio of the first gear 211 to the second gear 111, the performance requirements of the auxiliary motor 200 can be reduced, thereby reducing the cost of the auxiliary motor 200.

[0037] In some embodiments, a connecting seat 300 is provided between the auxiliary motor 200 and the air compressor 100, and the auxiliary motor 200 and the air compressor 100 are fixedly connected on both sides of the connecting seat 300 respectively; a through-type first mounting hole 310 and a second mounting hole 320 are provided on the connecting seat 300, and the first mounting hole 310 and the second mounting hole 320 are connected to each other. When the auxiliary motor 200 and the air compressor 100 are connected through the connecting seat 300, the output shaft 210 of the auxiliary motor 200 and the first gear 211 can extend into the first mounting hole 310, and the air compressor 100 rotates and the second gear 111 can extend into the second mounting hole 320. Due to the connection between the first mounting hole 310 and the second mounting hole 320, the first gear 211 and the second gear 111 can also be meshed with each other.

[0038] It can be understood that the connecting seat 300 can better realize the installation and matching of the auxiliary motor 200 and the air compressor 100, and can improve the stability of the transmission of the output shaft 210 and the rotating shaft 110 through the first gear 211 and the second gear 111. At the same time, the first gear 211 and the second gear 111 are hidden in the first mounting hole 310 and the second mounting hole 320, which can avoid the first gear 211 and the second gear 111 from being exposed to the outside, and can provide dust and touch protection for the first gear 211 and the second gear 111, thereby improving safety and ensuring the transmission efficiency between the first gear 211 and the second gear 111.

[0039] In some embodiments, a first installation groove 330 is formed on a side wall of the connection base 300 facing the auxiliary motor 200, the first installation groove 330 is connected to the first installation hole 310, and the first installation groove 330 can allow a part of the auxiliary motor 200 to extend into. Specifically, during installation, the first gear 211 is installed on the output shaft 210, and then the end of the auxiliary motor 200 with the output shaft 210 is extended into the first installation groove 330. During this process, the output shaft 210 and the first gear 211 are also extended into the first installation hole 310, so that the first gear 211 can mesh with the second gear 111. Finally, the auxiliary motor 200 and the connection base 300 are fixed by fastening bolts 301, thereby realizing the installation of the auxiliary motor 200 on the connection base 300.

[0040] By setting the first mounting groove 330, after the auxiliary motor 200 and the connecting seat 300 are assembled, the circumferential side wall of the first mounting groove 330 can form a certain wrapping effect on one end of the output shaft 210 of the auxiliary motor 200, thereby improving the tightness and stability of the assembly of the auxiliary motor 200 and the connecting seat 300, and the circumferential side wall of the first mounting groove 330 can play a certain protective role on the auxiliary motor 200, thereby improving safety.

[0041] In some embodiments, a second mounting groove 340 is formed on a side wall of the connecting seat 300 facing the air compressor 100, the second mounting groove 340 is connected to the second mounting hole 320, and the second mounting groove 340 can be partially inserted into the air compressor 100. Specifically, during installation, the second gear 111 is installed on the output shaft 210, and then the end of the air compressor 100 with the rotating shaft 110 is inserted into the second mounting groove 340. During this process, the rotating shaft 110 and the second gear 111 are also inserted into the second mounting hole 320, so that the second gear 111 can mesh with the first gear 211. Finally, the air compressor 100 and the connecting seat 300 are fixed by the fixing bolts 302, thereby realizing the installation of the air compressor 100 on the connecting seat 300.

[0042] By setting the second mounting groove 340, after the air compressor 100 and the connecting seat 300 are assembled, the circumferential side wall of the second mounting groove 340 can form a certain wrapping effect on one end of the rotating shaft 110 of the air compressor 100, thereby improving the tightness and stability of the assembly of the air compressor 100 and the connecting seat 300, and the circumferential side wall of the second mounting groove 340 can play a certain protective role on the air compressor 100, thereby improving safety.

[0043] In some embodiments, a plurality of threaded holes 303 are provided on the connection base 300, and the threaded holes 303 can be threadedly matched with the fastening bolts 301. It is understandable that the sizes of the auxiliary motors 200 of different specifications will be different. In this embodiment, by providing a plurality of threaded holes 303 on the connection base 300, when the auxiliary motor 200 and the connection base 300 are assembled, the output shaft 210 and the first gear 211 of the auxiliary motor 200 are first inserted into the first mounting hole 310, and then the threaded hole 303 matching the size of the auxiliary motor 200 can be selected, and then the auxiliary motor 200 is connected to the selected threaded hole 303 through the fastening bolts 301, so as to realize the assembly of the auxiliary motor 200 on the connection base 300.

[0044] In particular, due to the provision of multiple threaded holes 303 on the connecting base 300, the connecting base 300 can be assembled with auxiliary motors 200 of different specifications, so that different auxiliary motors 200 can be selected according to actual cost control or performance requirements, which is more flexible, easy to use, and easy to replace.

[0045] Furthermore, by selecting auxiliary motors 200 of different specifications and controlling the gear ratio of the first gear 211 and the second gear 111, it is possible to better ensure that the auxiliary motor 200 helps the air compressor 100 to start automatically while reducing costs. Furthermore, the threaded hole 303 can be set in the first installation groove 330, or can be set on the end surface of the connecting seat 300 facing the auxiliary motor 200, and there is no limitation on this, as long as the auxiliary motor 200 can be installed on the connecting seat 300.

[0046] In some embodiments, a plurality of connection holes 304 are provided on the connection base 300, and the connection holes 304 can be threadedly matched with the fixing bolts 302. It is understandable that the sizes of air compressors 100 of different specifications will be different. In this embodiment, by providing a plurality of connection holes 304 on the connection base 300, when assembling the air compressor 100 and the connection base 300, the rotating shaft 110 and the second gear 111 of the air compressor 100 are first extended into the second mounting hole 320, and then the connection hole 304 matching the size of the air compressor 100 can be selected, and then the air compressor 100 is connected to the selected connection hole 304 through the fixing bolts 302, so as to realize the assembly of the air compressor 100 on the connection base 300.

[0047] In particular, due to the provision of multiple connecting holes 304 on the connecting base 300, the connecting base 300 can be assembled with air compressors 100 of different specifications, so that different air compressors 100 can be selected according to actual cost control or performance requirements, which is more flexible, easy to use, and easy to replace.

[0048] Furthermore, the connection hole 304 can be set in the second installation groove 340, or can be set on the end surface of the connection base 300 facing the air compressor 100, and there is no limitation on this, as long as the air compressor 100 can be installed on the connection base 300.

[0049] In some embodiments, since the first mounting hole 310 and the second mounting hole 320 are both arranged in a through-type manner on the connecting base 300, in order to achieve a sealing effect of the first mounting hole 310 and the second mounting hole 320 when the auxiliary motor 200, the air compressor 100 and the connecting base 300 are assembled, seals (not shown in the figure) are provided at the openings of the first mounting hole 310 and the second mounting hole 320 on the connecting base 300, and the seals can be made of flexible materials such as rubber.

[0050] Specifically, a first annular rubber ring (not shown in the figure) is provided at the opening of the first mounting hole 310 and the second mounting hole 320 in the first mounting groove 330, and a second annular rubber ring (not shown in the figure) is provided at the opening of the first mounting hole 310 and the second mounting hole 320 in the second mounting groove 340; when the auxiliary motor 200 and the connecting seat 300 are assembled, the end surface of the output shaft 210 of the auxiliary motor 200 can be clamped with the first mounting groove 330 to form a clamp with the first rubber ring, and when the air compressor 100 and the connecting seat 300 are assembled, the end surface of the rotating shaft 110 of the air compressor 100 can be clamped with the second mounting groove 340 to form a clamp with the second rubber ring, so that the first mounting hole 310 and the second mounting hole 320 are sealed under the action of the first rubber ring and the second rubber ring.

[0051] It can be understood that, through the provision of the first sealing ring and the second sealing ring, the first mounting hole 310 and the second mounting hole 320 can better form a sealed chamber, so that the first mounting hole 310 and the second mounting hole 320 are filled with lubricating oil, which can better avoid the leakage of lubricating oil and the entry of external dust, thereby better ensuring the transmission efficiency between the first gear 211 and the second gear 111.

[0052] In some embodiments, an annular groove 112 is provided on the circumferential side wall of the rotating shaft 110, and the annular groove 112 opens on the end of the rotating shaft 110 facing the auxiliary motor 200, and the second gear 111 can be sleeved in the annular groove 112 from the end of the rotating shaft 110 close to the auxiliary motor 200. Furthermore, a detachable pressing member is also provided on the rotating shaft 110, and after the second gear 111 is sleeved in the annular groove 112, the pressing member can be installed on the rotating shaft 110, and then the pressing member can press the second gear 111 in the annular groove 112, so that the second gear 111 is fixedly installed in the annular groove 112.

[0053] By providing the annular groove 112 and the pressing member in this embodiment, the second gear 111 can be preferably fixedly installed on the rotating shaft 110. During assembly, the second gear 111 is first fixedly installed on the rotating shaft 110, and then the air compressor 100 and the connecting seat 300 are assembled.

[0054] In particular, by detachably installing the pressing member on the rotating shaft 110 , the second gear 111 can be replaced and repaired better, which is convenient for use.

[0055] In some embodiments, a positioning hole 114 is provided on the end face of the rotating shaft 110 facing the auxiliary motor 200, and a press-fit bolt 113 is used as a clamping member in this embodiment, and the front end of the press-fit bolt 113 can be threadedly connected to the positioning hole 114, and the rear end diameter of the press-fit bolt 113 is larger than the diameter of the rotating shaft 110 and smaller than the diameter of the second mounting hole 320.

[0056] Specifically, during the process of installing the second gear 111 on the rotating shaft 110, the second gear 111 is first sleeved in the annular groove 112, and then the front end of the pressing bolt 113 is threadedly extended into the positioning hole 114 until the rear end of the pressing bolt 113 abuts against the second gear 111 and presses the second gear 111 into the annular groove 112, thereby achieving fixed installation of the second gear 111 on the rotating shaft 110.

[0057] Similarly, the above-mentioned method can also be used for installing the first gear 211 on the output shaft 210, which will not be described in detail here.

[0058] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A speed change gearbox for an electric air compressor, characterized in that: It includes an auxiliary motor disposed on one side of the air compressor, wherein the output shaft of the auxiliary motor matches the rotating shaft of the air compressor; When the vehicle is started, the output shaft can drive the rotating shaft to rotate, so as to achieve a quick response of the air compressor.

2. The speed change gearbox according to claim 1, characterized in that: The output shaft is sleeved with a first gear; the rotating shaft is sleeved with a second gear meshing with the first gear; The number of teeth of the first gear is not greater than the number of teeth of the second gear.

3. The speed change gearbox according to claim 2, characterized in that: It also includes a connecting seat, on which a first mounting hole and a second mounting hole that are interconnected are provided; The auxiliary motor and the air compressor are respectively arranged on two sides of the connecting seat, and the first gear extends into the first mounting hole, and the second gear extends into the second mounting hole.

4. The speed change gearbox according to claim 3, characterized in that: A first mounting groove for the auxiliary motor to extend into is provided on a side wall of the connecting seat facing the auxiliary motor; the auxiliary motor is fixedly installed in the first mounting groove by fastening bolts.

5. The speed change gearbox according to claim 3 or 4, characterized in that: A side wall of the connecting seat facing the air compressor is provided with a second mounting groove for the air compressor to extend into; the air compressor is fixedly installed in the second mounting groove by fixing bolts.

6. The speed change gear box according to claim 4, characterized in that: The connection base is provided with a plurality of threaded holes matched with the fastening bolts to realize the assembly of the connection base and the auxiliary motors of different specifications.

7. The speed change gear box according to claim 5, characterized in that: The connecting seat is provided with a plurality of connecting holes matched with the fixing bolts, so as to realize the assembly of the connecting seat and the air compressors of different specifications.

8. The speed change gear box according to claim 3, characterized in that: The first mounting hole and the second mounting hole are both provided with sealing members at their openings on the connecting seat; In the assembled state, the sealing member can seal the first mounting hole and the second mounting hole.

9. The speed change gear box according to claim 2, characterized in that: An annular groove is provided on the circumferential side wall of the rotating shaft, and the annular groove opens on the end of the rotating shaft facing the auxiliary motor; A pressing piece is detachably provided on the rotating shaft, and the pressing piece can press and fix the second gear in the annular groove.

10. The speed change gear box according to claim 9, characterized in that: A positioning hole is provided on the end surface of the rotating shaft facing the auxiliary motor; the pressing member is a press-fit bolt; when the press-fit bolt is installed in the positioning hole, the press-fit bolt presses and fixes the second gear in the annular groove.

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