Air compressor and vehicle

Abstract

The utility model discloses an air compressor and a vehicle. The air compressor comprises a first piston and a second piston, wherein a first anti-rotation structure is arranged on the first piston; the second piston is fixedly connected with the first piston, a second anti-rotation structure is arranged on the second piston, and the second anti-rotation structure is suitable for being matched with the first anti-rotation structure in an embedded mode so as to prevent the second piston and the first piston from rotating relatively. According to the air compressor, the first anti-rotation structure and the second anti-rotation structure are matched in an embedded mode, so that the first piston and the second piston jointly do linear reciprocating motion when the air compressor works, abrasion between parts in the air compressor is reduced, the service life of the parts is guaranteed, the air tightness of the air compressor is improved, and the service life of the air compressor is prolonged. Therefore, the safety and the reliability of the air compressor are improved.

Description

Technical Field

[0001] The present application relates to the technical field of air compressors, and in particular to an air compressor and a vehicle. Background Art

[0002] In related technologies, when the second piston of the air compressor moves inside the air compressor housing, the axis of the second piston moves at an angle to the axis of the piston cavity, rather than in parallel. Long-term operation will cause severe wear of the leather cup on the second piston, affecting the overall air tightness of the air compressor. Utility Model Content

[0003] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes an air compressor that is conducive to reducing cup wear and improving the overall air tightness of the air compressor.

[0004] The present application also proposes a vehicle having the above-mentioned air compressor.

[0005] According to an embodiment of the present application, the air compressor includes a first piston and a second piston, and the first piston is provided with a first anti-rotation structure; the second piston is connected and fixed to the first piston, and the second piston is provided with a second anti-rotation structure, and the second anti-rotation structure is suitable for being embedded and matched with the first anti-rotation structure to prevent the second piston and the first piston from rotating relative to each other.

[0006] According to the air compressor of the embodiment of the present application, the first anti-rotation structure and the second anti-rotation structure are embedded and matched, so that the first piston and the second piston perform linear reciprocating motion together when the air compressor is working, thereby reducing the wear between the various components in the air compressor, ensuring the service life of each component, and improving the air tightness of the air compressor, thereby improving the safety and reliability of the air compressor.

[0007] According to some embodiments of the present application, one of the first anti-rotation structure and the second anti-rotation structure is a convex rib, and the other is a concave rib, and the convex rib is embedded in the concave rib.

[0008] According to some embodiments of the present application, the air compressor further includes a piston chamber, a first leather cup and a second leather cup, the first piston and the second piston are suitable for reciprocating in a straight line in the piston chamber, the first leather cup is installed on the side of the first piston away from the second piston, the first leather cup is in contact with the cavity wall of the piston chamber, the second leather cup is installed on the side of the second piston away from the first piston, and the second leather cup is in contact with the cavity wall of the piston chamber.

[0009] According to some embodiments of the present application, the air compressor further includes a piston chamber and a second leather cup, the first piston and the second piston are suitable for reciprocating in a straight line in the piston chamber, the second leather cup is installed on the side of the second piston away from the first piston, and the second leather cup is in contact with the cavity wall of the piston chamber.

[0010] According to some embodiments of the present application, the air compressor also includes a piston chamber and a first leather cup, the first piston and the second piston are suitable for moving back and forth in a straight line in the piston chamber, the first leather cup is installed on the side of the first piston away from the second piston, and the first leather cup is in contact with the cavity wall of the piston chamber.

[0011] According to some embodiments of the present application, the air compressor includes the first leather cup and the second leather cup, and the axis of the first leather cup and the axis of the second leather cup are located on the same straight line.

[0012] According to some embodiments of the present application, the air compressor further includes a mounting shaft connecting the first piston and the second piston.

[0013] According to some embodiments of the present application, a first axial hole is provided on the first piston, a second axial hole is provided on the second piston, the mounting shaft passes through the first axial hole and the second axial hole, the first anti-rotation structure extends radially along the first axial hole, and the second anti-rotation structure extends radially along the second axial hole.

[0014] According to some embodiments of the present application, the air compressor also includes a second leather cup, which is installed on the side of the second piston away from the first piston, and the extension direction of the first anti-rotation structure and the extension direction of the second anti-rotation structure are both parallel to the axis of the second leather cup.

[0015] According to some embodiments of the present application, the first anti-rotation structure extends along the radial direction of the first axial hole toward both radial sides of the first axial hole, and the second anti-rotation structure extends along the radial direction of the second axial hole toward both radial sides of the second axial hole.

[0016] According to some embodiments of the present application, the air compressor further includes a coupling block and a first bearing, the mounting shaft passes through the coupling block, and the mounting shaft is rotatably mounted on the coupling block via the first bearing.

[0017] According to some embodiments of the present application, the air compressor further includes a drive shaft and a second bearing, the drive shaft passes through the coupling block, and the drive shaft is rotatably mounted on the coupling block through the second bearing.

[0018] According to some embodiments of the present application, the air compressor also includes a driving device, the driving shaft is an eccentric shaft, the driving shaft includes a main body and an eccentric part, the main body is transmission-connected to the driving device, the eccentric part is connected to the main body, and the eccentric part is rotatably mounted on the coupling block through the second bearing.

[0019] According to some embodiments of the present application, the air compressor further includes an air compressor housing having a piston cavity therein, and the drive shaft is used to drive the first piston and the second piston to move back and forth in a straight line in the piston cavity.

[0020] A vehicle according to another embodiment of the present application includes the above-mentioned air compressor.

[0021] According to the vehicle of the embodiment of the present application, its air compressor is embedded with the first anti-rotation structure and the second anti-rotation structure, so that the first piston and the second piston perform linear reciprocating motion together when the air compressor is working, reducing the wear between the various components in the air compressor, ensuring the service life of each component, and improving the air tightness of the air compressor, thereby improving the safety and reliability of the air compressor.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional cross-sectional view of an air compressor according to an embodiment of the present application;

[0024] Figure 2 is a top cross-sectional view of an air compressor according to an embodiment of the present application;

[0025] Figure 3 is a schematic diagram of a first piston according to an embodiment of the present application;

[0026] Figure 4 is a schematic diagram of a second piston according to an embodiment of the present application;

[0027] Figure 5 is a three-dimensional assembly diagram of a first piston, a second piston, and a coupling block according to an embodiment of the present application;

[0028] Figure 6 is a three-dimensional assembly diagram of the first piston, the second piston and the coupling block from another direction according to an embodiment of the present application;

[0029] Figure 7 is a three-dimensional cross-sectional view of the first piston, the second piston and the coupling block in another direction according to an embodiment of the present application;

[0030] Figure 8is a perspective schematic diagram of a coupling block and a second piston according to an embodiment of the present application;

[0031] Figure 9 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0032] Reference numerals:

[0033] Vehicle 100, air compressor 10, first piston 1, first anti-rotation structure 11, first axial hole 12, first piston first arm 13, first piston second arm 14, first piston connecting part 15, second piston 2, second anti-rotation structure 21, second axial hole 22, second piston first arm 23, second piston second arm 24, second piston connecting part 25, air compressor housing 3, piston chamber 31, first leather cup 41, second leather cup 42, mounting shaft 5, coupling block 6, first bearing 71, second bearing 72, drive shaft 8, main body 81, eccentric part 82, drive device 9. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0035] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0036] The following combination Figures 1-9 An air compressor 10 and a vehicle 100 having the air compressor 10 according to an embodiment of the present application will be described in detail.

[0037] Reference Figures 1-4As shown, an air compressor 10 according to an embodiment of the present application includes a first piston 1 and a second piston 2. The first piston 1 is provided with a first anti-rotation structure 11; the second piston 2 is fixedly connected to the first piston 1 and provided with a second anti-rotation structure 21. The second anti-rotation structure 21 is adapted to be embedded and matched with the first anti-rotation structure 11 to prevent the second piston 2 from rotating relative to the first piston 1. Specifically, the first piston 1 and the second piston 2 are fixedly connected. The first anti-rotation structure 11 and the second anti-rotation structure 21 are embedded and matched to prevent the second piston 2 from rotating relative to the first piston 1. This allows the first piston 1 and the second piston 2 to perform linear reciprocating motion together, thereby reducing wear between various components in the air compressor 10. For example, when a leather cup is provided on at least one of the first piston 1 and the second piston 2, the leather cup rubs against the piston cavity, and the first piston 1 and the second piston 2 perform linear reciprocating motion together, which can reduce wear on the leather cup, thereby improving the airtightness of the air compressor 10 and improving the safety and reliability of the air compressor 10.

[0038] In the related art, when the second piston of the air compressor moves inside the air compressor housing, the axis of the second piston moves at an angle to the axis of the piston cavity, rather than being parallel. Long-term operation will cause serious wear of the leather cup on the second piston, affecting the overall air tightness of the air compressor. According to the air compressor 10 of the embodiment of the present application, the first anti-rotation structure 11 and the second anti-rotation structure 21 are embedded and matched, so that the first piston 1 and the second piston 2 perform linear reciprocating motion together when the air compressor 10 is working, reducing the wear between the various components in the air compressor 10, ensuring the service life of each component, and improving the air tightness of the air compressor 10, thereby improving the safety and reliability of the air compressor 10.

[0039] In some embodiments of the present application, one of the first anti-rotation structure 11 and the second anti-rotation structure 21 is a convex rib and the other is a concave rib, with the convex rib embedded in the concave rib. Thus, by embedding the convex rib in the concave rib, the first anti-rotation structure 11 and the second anti-rotation structure 21 are interlocked and fixed to each other, preventing the second piston 2 from rotating relative to the first piston 1, allowing the first piston 1 and the second piston 2 to perform linear reciprocating motion together, reducing wear between the various components in the air compressor 10, improving the airtightness of the air compressor 10, and thereby improving the safety and reliability of the air compressor 10.

[0040] In some embodiments, refer to FIG. Figure 3 、 Figure 4 As shown, the second anti-rotation structure 21 is a convex rib, and the first anti-rotation structure 11 is a concave rib.

[0041] In some embodiments not shown in the figures, the first anti-rotation structure 11 is a convex rib, and the second anti-rotation structure 21 is a concave rib.

[0042] In some embodiments, refer to FIG. Figure 3 、 Figure 4 As shown, the first anti-rotation structure 11 is a flat concave rib (or flat groove), and the depth of the flat concave rib is relatively small, so as not to excessively weaken the strength of the first piston 1; the second anti-rotation structure 21 is a flat convex rib, and the thickness of the flat convex rib is relatively small, so as not to excessively increase the weight of the second piston 2.

[0043] In some embodiments not shown in the figures, the first anti-rotation structure 11 is a flat convex rib, and the second anti-rotation structure 21 is a flat concave rib.

[0044] It is understandable that the first anti-rotation structure 11 and the second anti-rotation structure 21 may also be other structures that can be interlocked with each other, which will not be described one by one here.

[0045] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the air compressor 10 further includes a piston chamber 31 , and the first piston 1 and the second piston 2 are adapted to move back and forth in a straight line in the piston chamber 31 .

[0046] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the air compressor 10 further includes a first leather cup 41, which is mounted on the side of the first piston 1 away from the second piston 2, and the first leather cup 41 is in contact with the wall of the piston cavity 31. Figure 1 As shown, the first leather cup 41 is installed at the left end of the first piston 1. By providing the first leather cup 41, the air tightness of the air compressor 10 is guaranteed during the movement of the first piston 1.

[0047] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the air compressor 10 further includes a second leather cup 42, which is mounted on the side of the second piston 2 away from the first piston 1, and the second leather cup 42 is in contact with the wall of the piston cavity 31. Figure 1 As shown, the second leather cup 42 is installed at the right end of the second piston 2. By providing the second leather cup 42, the air tightness of the air compressor 10 is guaranteed during the movement of the second piston 2.

[0048] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 7As shown, the air compressor 10 includes a first leather cup 41 and a second leather cup 42. By providing the first leather cup 41 and the second leather cup 42, the air tightness of the air compressor 10 is ensured during the movement of the first piston 1 and the second piston 2. The first anti-rotation structure 11 and the second anti-rotation structure 21 are embedded and matched to fix the first piston 1 and the second piston 2 together, thereby preventing the second piston 2 from rotating relative to the first piston 1. The first piston 1 and the second piston 2 perform linear reciprocating motion together, reducing wear on the first leather cup 41 and the second leather cup 42, improving the air tightness of the air compressor 10, and enhancing the safety and reliability of the air compressor 10.

[0049] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 7 As shown, the air compressor 10 includes a first cup 41 and a second cup 42, with the axis of the first cup 41 and the axis of the second cup 42 co-located. This alignment makes the overall structure of the air compressor 10 more compact, improving the sealing performance of the air compressor 10 and thereby enhancing its stability and efficiency. When the first piston 1 and the second piston 2 perform linear reciprocating motion together, both the first cup 41 and the second cup 42 experience minimal wear.

[0050] In some embodiments of the present application, see Figure 1 、 Figure 6-Figure 8 As shown, the air compressor 10 also includes a mounting shaft 5, which connects the first piston 1 and the second piston 2, allowing the first piston 1 and the second piston 2 to perform linear reciprocating motion together. Connecting the first piston 1 and the second piston 2 via the mounting shaft 5 reduces additional transmission components and connectors, simplifies the transmission mechanism, and helps reduce production costs and maintenance difficulties. In addition, the provision of the mounting shaft 5 also enhances the structural stability of the air compressor 10, helping to reduce the offset and vibration of the first piston 1 and the second piston 2 during movement, thereby improving the structural stability of the air compressor 10.

[0051] In some embodiments of the present application, see Figure 3 、 Figure 4As shown, the first piston 1 is provided with a first axial hole 12, the second piston 2 is provided with a second axial hole 22, the mounting shaft 5 passes through the first axial hole 12 and the second axial hole 22, the first anti-rotation structure 11 extends radially along the first axial hole 12, and the second anti-rotation structure 21 extends radially along the second axial hole 22. Specifically, the first axial hole 12 and the second axial hole 22 provide precise guidance and support for the mounting shaft 5, ensuring that the mounting shaft 5 can stably connect the first piston 1 and the second piston 2, helping to reduce the shaking and offset of the mounting shaft 5 during operation, thereby improving the overall stability of the air compressor 10. The first anti-rotation structure 11 extends radially along the first axial hole 12, and the second anti-rotation structure 21 extends radially along the second axial hole 22. When the first piston 1 and the second piston 2 are connected by the mounting shaft 5, this radially extending anti-rotation structure can effectively limit the relative rotation of the first piston 1 and the second piston 2, greatly enhancing the anti-rotation effect.

[0052] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 7 As shown, the air compressor 10 further includes a second leather cup 42, which is mounted on the side of the second piston 2 away from the first piston 1. The extension direction of the first anti-rotation structure 11 and the extension direction of the second anti-rotation structure 21 are both parallel to the axis of the second leather cup 42. Figure 1 As shown, the second leather cup 42 is installed at the right end of the second piston 2. By setting the extension direction of the first anti-rotation structure 11 and the extension direction of the second anti-rotation structure 21 to be parallel to the axis of the second leather cup 42, the second piston 2 is prevented from generating uneven lateral force due to rotation during movement, and uneven wear of the second leather cup 42 is avoided, thereby ensuring the sealing performance of the second leather cup 42 and extending the service life of the second leather cup 42.

[0053] In some embodiments of the present application, see Figure 3 、 Figure 4 As shown, the first anti-rotation structure 11 extends along the radial direction of the first shaft hole 12 toward both radial sides of the first shaft hole 12, and the second anti-rotation structure 21 extends along the radial direction of the second shaft hole 22 toward both radial sides of the second shaft hole 22. Thus, the design of extending on both radial sides ensures that the first anti-rotation structure 11 and the second anti-rotation structure 21 have a longer interlocking length, further strengthening the ability of the first anti-rotation structure 11 and the second anti-rotation structure 21 to limit the relative rotation of the first piston 1 and the second piston 2, allowing the first piston 1 and the second piston 2 to perform reciprocating linear motion together, reducing the wear of the first leather cup 41 and the second leather cup 42, improving the air tightness of the air compressor 10, and thus improving the power efficiency of the air compressor 10.

[0054] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 5-Figure 8 As shown, the air compressor 10 further includes a coupling block 6 and a first bearing 71. The mounting shaft 5 passes through the coupling block 6 and is rotatably mounted on the coupling block 6 via the first bearing 71. Specifically, the coupling block 6 transmits torque to the mounting shaft 5, allowing the mounting shaft 5 to rotate flexibly. At the same time, the first bearing 71 can effectively reduce wear on the mounting shaft 5 during rotation, thereby extending the service life of the mounting shaft 5 and the coupling block 6.

[0055] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 7 As shown, the air compressor 10 also includes a drive shaft 8 and a second bearing 72. The drive shaft 8 passes through the coupling block 6 and is rotatably mounted on the coupling block 6 via the second bearing 72. As a result, the drive shaft 8 and the mounting shaft 5 are rotatably mounted on the coupling block 6 via the second bearing 72 and the first bearing 71, respectively. This dual-shaft structure, in conjunction with the coupling block 6, makes power transmission more flexible and efficient. During the operation of the air compressor 10, the drive shaft 8 transmits power to the mounting shaft 5, thereby driving the first piston 1 and the second piston 2 to move synchronously. The second bearing 72 ensures that the drive shaft 8 can rotate smoothly, reducing energy loss during power transmission.

[0056] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 7 As shown, the air compressor 10 also includes a drive device 9, and the drive shaft 8 is an eccentric shaft. The drive shaft 8 includes a main body 81 and an eccentric portion 82. The main body 81 is connected to the drive device 9 in a transmission manner, and the eccentric portion 82 is connected to the main body 81. The eccentric portion 82 is rotatably mounted on the coupling block 6 via a second bearing 72. Specifically, the drive shaft 8 is an eccentric shaft, so that the eccentric portion 82 performs a circular motion around the axis of the main body 81. The drive shaft 8 is connected to the coupling block 6 via the second bearing 72, so that the circular motion of the eccentric portion 82 is converted into the reciprocating linear motion of the first piston 1 and the second piston 2. This simply and efficiently completes the power conversion and improves the working efficiency of the air compressor 10.

[0057] In some embodiments of the present application, see Figure 4 、 Figure 5 As shown, the second piston 2 includes a second piston first arm

[0058] 23, second piston second arm 24 and second piston connecting portion 25. The second piston first arm 23 and the second piston second arm 24 are both connected to the second piston connecting portion 25. The second piston first arm 23 and the second piston second arm 24 are arranged opposite each other, and one end of the coupling block 6 extends between the second piston first arm 23 and the second piston second arm 24. Specifically, the second piston first arm 23 and the second piston second arm 24 are connected by the second piston connecting portion 25, forming a stable frame structure, which helps to enhance the structural stability of the second piston 2 and reduce the risk of damage due to vibration or impact.

[0059] In some embodiments of the present application, see Figure 3-Figure 5 As shown, the first piston 1 includes a first piston first arm 13, a first piston second arm 14, and a first piston connecting portion 15. The first piston first arm 13 and the first piston second arm 14 are both connected to the first piston connecting portion 15. The first piston first arm 13 and the first piston second arm 14 are arranged opposite each other, and the second piston first arm 23 and the second piston second arm 24 extend between the first piston first arm 13 and the first piston second arm 14. The other end of the coupling block 6 extends between the first piston first arm 13 and the first piston second arm 14. Specifically, the first piston first arm 13 and the first piston second arm 14 are arranged opposite each other, and the second piston first arm 23 and the second piston second arm 24 extend therebetween. This nested design makes the entire piston assembly more compact in structure, helps reduce the overall size of the mechanical system, and improves space utilization.

[0060] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the air compressor 10 also includes an air compressor housing 3, which defines a piston chamber 31. The drive shaft 8 is used to drive the first piston 1 and the second piston 2 to reciprocate along a straight line within the piston chamber 31. Specifically, the air compressor housing 3 provides a closed piston chamber 31, which centralizes the working areas of the first piston 1 and the second piston 2. When the first piston 1 and the second piston 2 reciprocate along a straight line under the drive of the drive shaft 8, air can be effectively compressed within the piston chamber 31.

[0061] See Figure 9 As shown, a vehicle 100 according to another embodiment of the present application includes the air compressor 10 of the above embodiment.

[0062] According to the vehicle 100 of the embodiment of the present application, its air compressor 10 is embedded and matched with the first anti-rotation structure 11 and the second anti-rotation structure 21, so that the first piston 1 and the second piston 2 perform linear reciprocating motion when the air compressor 10 is working, thereby reducing the wear between the various components in the air compressor 10, ensuring the service life of the various components, and improving the air tightness of the air compressor 10, thereby improving the safety and reliability of the air compressor 10.

[0063] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0064] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0065] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An air compressor (10), characterized in that: include: A first piston (1), wherein the first piston (1) is provided with a first anti-rotation structure (11); and A second piston (2), the second piston (2) is fixedly connected to the first piston (1), and a second anti-rotation structure (21) is provided on the second piston (2), and the second anti-rotation structure (21) is suitable for being embedded and matched with the first anti-rotation structure (11) to prevent the second piston (2) and the first piston (1) from rotating relative to each other.

2. The air compressor (10) according to claim 1, characterized in that One of the first anti-rotation structure (11) and the second anti-rotation structure (21) is a convex rib, and the other is a concave rib, and the convex rib is embedded in the concave rib.

3. The air compressor (10) according to claim 1, characterized in that The air compressor (10) further comprises: A piston chamber (31), wherein the first piston (1) and the second piston (2) are adapted to reciprocate along a straight line in the piston chamber (31); a first leather cup (41), the first leather cup (41) being mounted on a side of the first piston (1) away from the second piston (2), the first leather cup (41) being in contact with a cavity wall of the piston cavity (31); and / or, A second leather cup (42) is installed on a side of the second piston (2) away from the first piston (1), and the second leather cup (42) is in contact with the cavity wall of the piston cavity (31).

4. The air compressor (10) according to claim 3, characterized in that The air compressor (10) comprises the first leather cup (41) and the second leather cup (42), wherein the axis of the first leather cup (41) and the axis of the second leather cup (42) are located on the same straight line.

5. The air compressor (10) according to claim 1, characterized in that The air compressor (10) further comprises a mounting shaft (5), wherein the mounting shaft (5) connects the first piston (1) and the second piston (2).

6. The air compressor (10) according to claim 5, characterized in that The first piston (1) is provided with a first axial hole (12), the second piston (2) is provided with a second axial hole (22), the mounting shaft (5) passes through the first axial hole (12) and the second axial hole (22), the first anti-rotation structure (11) extends radially along the first axial hole (12), and the second anti-rotation structure (21) extends radially along the second axial hole (22).

7. The air compressor (10) according to claim 6, characterized in that The air compressor (10) further comprises a second leather cup (42), which is mounted on a side of the second piston (2) away from the first piston (1), and the extension direction of the first anti-rotation structure (11) and the extension direction of the second anti-rotation structure (21) are both parallel to the axis of the second leather cup (42).

8. The air compressor (10) according to claim 6, characterized in that The first anti-rotation structure (11) extends along the radial direction of the first axial hole (12) toward both radial sides of the first axial hole (12), and the second anti-rotation structure (21) extends along the radial direction of the second axial hole (22) toward both radial sides of the second axial hole (22).

9. The air compressor (10) according to claim 5, characterized in that The air compressor (10) further comprises: a coupling block (6) through which the mounting shaft (5) passes; and A first bearing (71), wherein the mounting shaft (5) is rotatably mounted on the coupling block (6) via the first bearing (71).

10. The air compressor (10) according to claim 9, characterized in that The air compressor (10) further comprises: a drive shaft (8), the drive shaft (8) passing through the coupling block (6); and A second bearing (72), the drive shaft (8) is rotatably mounted on the coupling block (6) via the second bearing (72).

11. The air compressor (10) according to claim 10, characterized in that: The air compressor (10) further includes a driving device (9), the driving shaft (8) is an eccentric shaft, and the driving shaft (8) includes a main body (81) and an eccentric part (82), the main body (81) is transmission-connected to the driving device (9), the eccentric part (82) is connected to the main body (81), and the eccentric part (82) is rotatably mounted on the coupling block (6) via the second bearing (72).

12. The air compressor (10) according to claim 10, characterized in that The air compressor (10) further comprises an air compressor housing (3), wherein a piston cavity (31) is provided in the air compressor housing (3), and the drive shaft (8) is used to drive the first piston (1) and the second piston (2) to move back and forth along a straight line in the piston cavity (31).

13. A vehicle (100), characterized in that The invention comprises an air compressor (10) according to any one of claims 1 to 12.

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