Compressor and vehicle

Abstract

The application discloses a compressor and a vehicle. The compressor comprises a rotating shaft, a balance block and a driving mechanism. The rotating shaft comprises a main shaft, an eccentric pin and an anti-rotation pin. The main shaft is used for rotating around a rotating axis. The eccentric pin and the anti-rotation pin are arranged at the same end of the main shaft. The central axis of the eccentric pin is parallel to the rotating axis and does not coincide with the rotating axis. The balance block comprises a balance body part and an elastic part. The balance body part is provided with an eccentric hole and an anti-rotation hole. The eccentric pin is inserted into the eccentric hole. The anti-rotation pin is inserted into the anti-rotation hole. The rotating shaft is used for driving the balance block to rotate in a rotating direction. The radial dimension of the anti-rotation pin is smaller than the radial dimension of the anti-rotation hole. The elastic part is at least partially arranged in the anti-rotation hole. The elastic part is used for limiting the balance body part from swinging in the rotating direction relative to the anti-rotation pin. Thus, the anti-rotation pin is inserted into the anti-rotation hole and is limited from swinging in the rotating direction by the elastic part. The balance block is more swung in the direction opposite to the rotating direction, so that the swing radius is reduced, the centrifugal force is more balanced, and the risk of damage of the compressor is reduced.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and in particular to a compressor and a vehicle. Background Technology

[0002] With the rapid development of electric vehicles, in order to adapt to the limited installation space inside the vehicle, the external envelope of the automotive compressor needs to be as small as possible. At the same time, the fast charging of electric vehicles places increasingly higher demands on the maximum cooling capacity of the compressor, which inevitably requires the compressor to operate at higher speeds.

[0003] To reduce the radial force on the scroll plate during high-speed operation, a swaying balance block is often installed at the bottom of the moving scroll plate to balance the centrifugal force generated during its operation. However, when the balance block oscillates in the opposite direction, it becomes less effective in balancing the centrifugal force on the moving plate. Therefore, how to set the balance block to better balance the centrifugal force is an urgent problem to be solved. Utility Model Content

[0004] The main objective of this application is to provide a compressor and vehicle that address the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned problems, this application provides a compressor comprising a rotating shaft and a balance block. The rotating shaft includes a main shaft, an eccentric pin, and an anti-rotation pin. The main shaft is used to rotate around the rotation axis. The eccentric pin and the anti-rotation pin are spaced apart and disposed at the same end of the main shaft. The central axis of the eccentric pin is parallel to and does not coincide with the rotation axis. The balance block includes a balancing body and an elastic part. The balancing body is provided with an eccentric hole and an anti-rotation hole. The eccentric pin is inserted into the eccentric hole, and the anti-rotation pin is inserted into the anti-rotation hole. The rotating shaft is used to drive the balance block to rotate in the rotation direction. The radial dimension of the anti-rotation pin is smaller than the radial dimension of the anti-rotation hole. The elastic part is at least partially disposed in the anti-rotation hole and is used to limit the oscillation of the balancing body relative to the anti-rotation pin in the rotation direction.

[0006] In some embodiments, the line connecting the central axis to the rotation axis is a reference line, the anti-rotation pin is disposed on the side of the reference line opposite to the rotation direction, the elastic part is connected to the inner wall of the anti-rotation hole on the rotation direction side, the anti-rotation pin abuts against the elastic part on one side of the rotation direction, and the other side of the anti-rotation pin is close to or abuts against the inner wall of the anti-rotation hole.

[0007] The direction perpendicular to the reference line from the center of the anti-rotation hole is the offset direction. The distance from the axis of the anti-rotation pin to the outer side of the anti-rotation pin in the offset direction is the first distance. The distance from the center line of the anti-rotation hole to the inner wall of the anti-rotation hole in the offset direction is the second distance. The distance from the axis of the anti-rotation pin to the reference line in the offset direction is the third distance. The distance from the center line of the anti-rotation hole to the reference line in the offset direction is the fourth distance. The relationship between the first, second, third, and fourth distances is that the difference between the second and first distances is less than or equal to the difference between the third and fourth distances.

[0008] In some embodiments, the elastic part is a leaf spring, which is bent and connected at both ends to the anti-rotation hole. The bent portion of the leaf spring abuts against the anti-rotation pin on the side away from the inner wall of the anti-rotation hole.

[0009] In some embodiments, the anti-rotation hole has a crescent-shaped cross-section arranged around the central axis, and the distance between the two opposite inner surfaces of the anti-rotation hole in the radial direction of the eccentric pin is slightly larger than the radial dimension of the anti-rotation pin.

[0010] In some embodiments, the balancing body includes a rotating part and a balancing part, the balancing part is connected to one side of the rotating part, an eccentric hole is provided in the rotating part, an anti-rotation hole is provided in the balancing part, and the eccentric pin and the anti-rotation pin are located on both sides of the rotation axis in the direction of the reference line.

[0011] In some embodiments, a fan-shaped clearance groove is provided on the side of the balance part near the main shaft, a portion of the main shaft is located in the fan-shaped clearance groove, the center of the fan-shaped clearance groove is located on the rotation axis, and a limiting block is provided at one end of the fan-shaped clearance groove in the direction opposite to the rotation direction, the limiting block protruding from the inner wall of the fan-shaped clearance groove.

[0012] In some embodiments, the limiting block includes an abutting arc surface, the center of which is located on the side near the main shaft, and one end of the abutting arc surface is connected to the inner wall of the fan-shaped clearance groove.

[0013] In some embodiments, the limiting block includes an avoidance arc surface, the center of which is located on the side away from the main shaft, and the avoidance arc surface is connected to the end of the abutment arc surface away from the fan-shaped avoidance groove.

[0014] To address the aforementioned problems, this application provides a vehicle that includes the aforementioned compressor.

[0015] Compared with the prior art, the compressor provided in this application includes a rotating shaft and a balance block. The rotating shaft includes a main shaft, an eccentric pin, and an anti-rotation pin. The main shaft is used to rotate around the rotation axis. The eccentric pin and the anti-rotation pin are spaced apart and disposed at the same end of the main shaft. The central axis of the eccentric pin is parallel to and does not coincide with the rotation axis. The balance block includes a balancing body and an elastic part. The balancing body is provided with an eccentric hole and an anti-rotation hole. The eccentric pin is inserted into the eccentric hole, and the anti-rotation pin is inserted into the anti-rotation hole. The rotating shaft is used to drive the balance block to rotate in the rotation direction. The radial dimension of the anti-rotation pin is smaller than the radial dimension of the anti-rotation hole. The elastic part is at least partially disposed in the anti-rotation hole and is used to restrict the oscillation of the balancing body relative to the anti-rotation pin in the rotation direction. Through the above embodiment, the eccentric pin and the anti-rotation pin are spaced apart and disposed at the same end of the main shaft. The eccentric pin is rotatably connected to the balancing body through the eccentric hole. The anti-rotation pin is inserted into the anti-rotation hole and is restricted by the elastic part to oscillate in the rotation direction, so that the balance block oscillates more in the direction opposite to the rotation direction, thereby reducing the radius of rotation, which is more conducive to balancing centrifugal force and reducing the risk of compressor damage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view structural schematic diagram of an embodiment of the rotating shaft and balance block provided in this application; Figure 2 yes Figure 1 The diagram shows the disassembled structure of the rotating shaft and the balance weight. Figure 3 yes Figure 1 A schematic diagram of the rotating shaft and balance block from a second-view perspective; Figure 4 yes Figure 3 An enlarged structural schematic diagram of the rotating shaft and balance block shown at dashed box I; Figure 5 This is a schematic diagram of the structure of an embodiment of the anti-rotation hole of the balance block provided in this application; Figure 6 yes Figure 1 A schematic diagram of one embodiment of the balance block is shown; Figure 7 yes Figure 6 The diagram shows an enlarged view of the balance block at the dashed box u.

[0018] Reference numerals: Rotating shaft 100; Main shaft 110; Rotating axis 111; Eccentric pin 120; Central axis 121; Anti-rotation pin 130; Balance block 200; Balancing body 210; Eccentric hole 211; Anti-rotation hole 222; Elastic part 220; First distance a; Second distance b; Third distance c; Fourth distance d; Rotating part 230; Balancing part 240; Fan-shaped clearance groove 241; Limiting block 242; Abutting arc surface 2421; Clearance arc surface 2422; Reference line L; Rotation direction O; Offset direction X. Detailed Implementation

[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0025] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0026] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0027] With the rapid development of electric vehicles, the external envelope of automotive compressors needs to be as small as possible to accommodate the limited installation space within the vehicle. Simultaneously, the fast charging of electric vehicles places increasingly higher demands on the maximum cooling capacity of compressors, necessitating higher operating speeds. To reduce the radial force on the scroll plate during high-speed operation, a oscillating balance block is often installed under the moving scroll plate to balance the centrifugal force generated during its rotation. However, when the balance block oscillates in the opposite direction, it becomes less effective at balancing the centrifugal force on the moving plate. Therefore, how to design the balance block to better balance the centrifugal force is a problem that urgently needs to be solved.

[0028] To address the related technical problems, this application provides a vehicle that includes a compressor, a condenser, an expansion valve, and an evaporator connected in a cycle to exchange heat for the vehicle's interior space.

[0029] To address the related technical problems, this application also provides a compressor, for details please refer to [link / reference needed]. Figures 1 to 4 , Figure 1 This is a first-view structural schematic diagram of an embodiment of the rotating shaft and balance block provided in this application. Figure 2 yes Figure 1 The diagram shows the disassembled structure of the rotating shaft and the balance block. Figure 3 yes Figure 1 The diagram shows a second-view structural schematic of the rotating shaft and the balance block. Figure 4 yes Figure 3 The enlarged structural diagram of the rotating shaft and balance block shown in dashed box I.

[0030] The compressor includes a rotating shaft 100 and a counterweight 200. The rotating shaft 100 includes a main shaft 110, an eccentric pin 120, and an anti-rotation pin 130. The main shaft 110 is used to rotate around the rotation axis 111. The eccentric pin 120 and the anti-rotation pin 130 are spaced apart at the same end of the main shaft 110. The central axis 121 of the eccentric pin 120 is parallel to and does not coincide with the rotation axis 111. The counterweight 200 includes a balancing body 210 and an elastic part 220. The balancing body 210... The device is provided with an eccentric hole 211 and an anti-rotation hole 222. An eccentric pin 120 is inserted into the eccentric hole 211, and an anti-rotation pin 130 is inserted into the anti-rotation hole 222. A rotating shaft 100 is used to drive the balance block 200 to rotate in the rotation direction O. The radial dimension of the anti-rotation pin 130 is smaller than the radial dimension of the anti-rotation hole 222. An elastic part 220 is at least partially provided in the anti-rotation hole 222. The elastic part 220 is used to limit the swing of the balance body 210 relative to the anti-rotation pin 130 in the rotation direction O.

[0031] The compressor includes a housing and components such as a motor, a moving scroll, and a stationary scroll housed within the housing. The motor includes a rotating shaft 100, which drives the moving scroll to rotate. The moving scroll rotates eccentrically, thereby engaging with the stationary scroll to compress the refrigerant.

[0032] The rotating shaft 100 may include a main shaft 110, an eccentric pin 120, and an anti-rotation pin 130. The main shaft 110 is disposed inside the rotor of the motor, so that the rotor drives the main shaft 110 to rotate around the rotation axis 111. The eccentric pin 120 is provided at the end of the main shaft 110 away from the rotor. The eccentric pin 120 is eccentrically disposed with respect to the main shaft 110, that is, the rotation axis 111 of the main shaft 110 and the central axis 121 of the eccentric pin 120 are parallel to each other but do not coincide. The anti-rotation pin 130 is also disposed at the end of the main shaft 110 away from the rotor and is spaced apart from the eccentric pin 120. The eccentric pin 120 can be connected to the moving scroll. For example, the moving scroll has a connecting groove for connecting with the eccentric pin 120. A drive bearing can be provided inside the connecting groove. The drive bearing is sleeved on the outside of the eccentric pin 120 so that the eccentric pin 120 drives the moving scroll to rotate eccentrically, thereby meshing with the stationary scroll to compress the refrigerant.

[0033] The balance block 200 includes a balance body 210 and an elastic part 220. The balance body 210 is provided with an eccentric hole 211, which is used to connect with an eccentric pin 120, so that the balance body 210 can swing left and right around the central axis 121. The moving scroll is connected to the eccentric pin 120 through the balance body 210, so that the eccentric pin 120 drives the moving scroll to rotate eccentrically through the balance body 210. It can be understood that when the compressor is working, it will adjust the compression of the compressor according to the ambient temperature. Therefore, the rotation speed of the rotating shaft 100 will change instead of rotating at a constant speed. The balance body 210 is rotatably connected to the eccentric pin 120 through the eccentric hole 211, so that when the rotation of the rotating shaft 100 accelerates or decelerates, the balance block 200, which is rotatably connected to the eccentric pin 120 through the eccentric hole 211, will swing in the rotation direction O around the central axis 121. When the balance block 200 swings in the rotation direction O, its radius of gyration increases, which is detrimental to the balance of the centrifugal force of the moving scroll. It is known that the centrifugal force generated by the eccentric rotation of the moving scroll acts on the stationary scroll, creating an interaction force between them. A larger radius of gyration increases this interaction force, thus increasing the risk of compressor damage. When the balance block 200 swings in the opposite direction to rotation O, its radius of gyration decreases, thereby reducing the risk of compressor damage.

[0034] To address the aforementioned issue of increased radius of rotation, the balancing body 210 is further provided with an anti-rotation hole 222. This anti-rotation hole 222 is spaced apart from the eccentric hole 211, and the anti-rotation pin 130 is confined within the anti-rotation hole 222. This reduces the swaying amplitude of the balancing body 210, thereby reducing the increase in radius of rotation. However, the radius of rotation may still increase. Therefore, an elastic portion 220 is also provided within the anti-rotation hole 222. This elastic portion 220 is configured to limit the swaying of the balancing body 210 relative to the anti-rotation pin 130 along the rotation direction O. For example, the elastic portion 220 can be a sheet-like structure or a columnar structure. The elastic part 220 is connected to the inner wall of the anti-rotation hole 222 on the side in the rotation direction O. The side of the elastic part 220 away from the connection with the anti-rotation hole 222 abuts against the anti-rotation pin 130. The side of the anti-rotation pin 130 away from the elastic part 220 in the rotation direction O is connected to the inner wall of the other side of the anti-rotation hole 222. This restricts the swaying of the balance body 210 in the rotation direction O, while allowing the balance body 210 to sway in the opposite direction to the rotation direction O, thus ensuring that the swaying of the balance block 200 can only reduce the radius of rotation. Figure 3 As shown, taking the rotation direction O as counterclockwise as an example, the elastic part 220 is located on the right side connected to the anti-rotation hole 222, and the side of the anti-rotation pin 130 away from the elastic part 220 abuts against the left side of the anti-rotation hole 222.

[0035] In the above-described embodiment, the eccentric pin 120 and the anti-rotation pin 130 are spaced apart at the same end of the main shaft 110. The eccentric pin 120 is rotatably connected to the balance body part 210 through the eccentric hole 211. The anti-rotation pin 130 is inserted into the anti-rotation hole 222 and is restricted by the elastic part 220 to swing in the rotation direction O, so that the balance block 200 swings more in the opposite direction to the rotation direction O, thereby reducing the radius of rotation, which is more conducive to balancing centrifugal force and reducing the risk of compressor damage.

[0036] In some embodiments, the balancing body 210 includes a rotating part 230 and a balancing part 240. The balancing part 240 is connected to one side of the rotating part 230. An eccentric hole 211 is provided in the rotating part 230, and an anti-rotation hole 222 is provided in the balancing part 240. An eccentric pin 120 and an anti-rotation pin 130 are located on both sides of the rotation axis 111 in the direction of the reference line L.

[0037] Understandably, the radius of rotation is the distance from the center of the rotating part 230 to the center of the rotating shaft 100.

[0038] The reference line L can be understood as a straight line perpendicular to the central axis 121 of the eccentric pin 120 and the rotation axis 111 perpendicular to the main shaft 110. The balancing body 210 includes a rotating part 230 and a balancing part 240. The rotating part 230 is cylindrical, and an eccentric hole 211 is disposed in the rotating part 230. It can be understood that the eccentric hole 211 is eccentrically disposed in the rotating part 230, that is, the center of the eccentric hole 211 is spaced apart from the center of the rotating part 230 in the radial direction, so that the center of the eccentric hole 211 does not coincide with the center of the rotating part 230. The eccentric pin 120 and the anti-rotation pin 130 are on both sides in the direction of the reference line L, exemplarily... Figure 3 For example, when the eccentric pin 120 rotates to the upper half of the spindle 110, the anti-rotation pin 130 is located in the lower half of the center of the spindle 110 relative to the eccentric pin 120 in the direction of the reference line L. The balancing part 240 is connected to the lower half of the rotating part 230 in the direction of the reference line L. The anti-rotation hole 222 is provided in the balancing part 240 so that the anti-rotation pin 130 and the anti-rotation hole 222 cooperate. Therefore, the rotating part 230 oscillates eccentrically around the central axis 121 of the eccentric pin 120, and the eccentric pin 120 and the anti-rotation pin 130 are set on both sides of the rotation axis 111 of the main shaft 110 in the direction of the reference line L. This allows the balance block 200 to move around the rotation axis 111 with the eccentric pin 120, with the center of the rotating part 230 as the reference. The center of mass of the balance block 200 is always basically on the same straight line as the center of mass of the moving scroll and the center of the rotating part 230, and the center of mass of the balance block 200 and the center of mass of the moving scroll are on both sides of the center. This allows the balance block 200 to effectively counteract the centrifugal force generated by the moving scroll and reduce the risk of compressor damage.

[0039] In this embodiment, the anti-rotation hole 222 can be located in the middle of the balance part 240 in the rotation direction O, so that the balance part 240 is symmetrically arranged on the left and right sides, thereby improving the balance of the balance block 200 when swinging, and making it more conducive to reducing the radius of rotation.

[0040] In some embodiments, the connecting line from the central axis 121 to the rotation axis 111 is a reference line L. The anti-rotation pin 130 is offset and disposed on the side of the reference line L opposite to the rotation direction O. The elastic part 220 is connected to the inner wall of the anti-rotation hole 222 on the side of the rotation direction O. The side of the anti-rotation pin 130 in the rotation direction O abuts against the elastic part 220, and the other side of the anti-rotation pin 130 is close to or abuts against the inner wall of the anti-rotation hole 222.

[0041] The eccentric pin 120 is offset from the reference line L in a direction opposite to the rotation direction O. That is, the center of the eccentric pin 120 is not located on the reference line L, but rather on one side of the reference line L in a direction opposite to the rotation direction O, and the anti-rotation pin 130 is inserted into the anti-rotation hole 222. This allows the balancing body 210 to, under the influence of gravity, without the support of the elastic part 220, allow the side of the anti-rotation pin 130 in the direction opposite to the rotation direction O to abut against the inner wall of the anti-rotation hole 222 in the same direction. Furthermore, the elastic part 220 abuts against the limiting pin and the inner wall of the anti-rotation hole 222 on both sides in the rotation direction O. Therefore, the offset setting of the eccentric pin 120 can reduce the stiffness requirement of the elastic part 220 and reduce the elastic coefficient of the elastic part 220. This can reduce the interference force between the elastic part 220 and the anti-rotation hole 222 and the anti-rotation pin 130, reduce the risk of the elastic part 220 falling off due to excessive interference force between the elastic part 220 and the anti-rotation pin 130 and the anti-rotation hole 222, and reduce the tendency of the balance block 200 to rotate in the rotation direction O.

[0042] The perpendicular direction from the center of the anti-rotation hole 222 to the reference line L is the offset direction X. The distance from the axis of the anti-rotation pin 130 to the outer side of the anti-rotation pin 130 in the offset direction X is the first distance a. The distance from the center line of the anti-rotation hole 222 to the inner wall of the anti-rotation hole 222 in the offset direction X is the second distance b. The distance from the axis of the anti-rotation pin 130 to the reference line L in the offset direction X is the third distance c. The distance from the center line of the anti-rotation hole 222 to the reference line L in the offset direction X is the fourth distance d. The relationship between the first distance a, the second distance b, the third distance c, and the fourth distance d is that the difference between the second distance b and the first distance a is less than or equal to the difference between the third distance c and the fourth distance d.

[0043] Since the balance block 200 rotates with the eccentric pin 120 around the rotation axis 111, the perpendicular direction from the center of the anti-rotation hole 222 to the reference line L is defined as the offset direction X. This is to make the description easier to understand as it is unaffected by rotational changes. The difference between the second distance b and the first distance a represents the offset distance of the center of the anti-rotation pin 130 relative to the center of the anti-rotation hole 222 in the offset direction X. The difference between the third distance c and the fourth distance d represents the difference in the offset distances of the anti-rotation hole 222 and the anti-rotation pin 130 relative to the reference line L. Therefore, when the difference between the second distance b and the first distance a is less than or equal to the difference between the third distance c and the fourth distance d, it can be ensured that the anti-rotation pin 130 approaches or abuts against the inner wall of the anti-rotation hole 222 in the direction opposite to the rotation direction O. Thus, the anti-rotation hole 222 and the anti-rotation pin 130 can restrict the swing of the balance body 210 in the rotation direction O, so that the balance body 210 can only swing in the direction opposite to the rotation direction O, thereby reducing the radius of rotation and reducing the risk of compressor damage.

[0044] In some embodiments, the elastic part 220 is a leaf spring, which is bent and connected at both ends to the anti-rotation hole 222. The bent part of the leaf spring abuts against the anti-rotation pin 130 on the side away from the inner wall of the anti-rotation hole 222.

[0045] The leaf spring can be understood as a metal sheet of a certain thickness. Both ends of the leaf spring are connected to the inner wall of the anti-rotation hole 222, and it has a certain initial bending curvature. The side of the bent portion of the leaf spring away from the connection point with the anti-rotation hole 222 abuts against the anti-rotation pin 130. When the leaf spring abuts against the anti-rotation pin 130, it is in a compressed state, thus providing a continuous pushing force to the anti-rotation pin 130. Therefore, there are two connection points between the leaf spring and the anti-rotation hole 222, and one connection point with the anti-rotation pin 130. These three connection points are arranged in a triangle, allowing the leaf spring to stably abut against the anti-rotation pin 130. Furthermore, the side of the leaf spring abuts against the anti-rotation pin 130, thereby increasing the connection area between the leaf spring and the anti-rotation pin 130 and improving the stability of the abutment, thus reducing the risk of the elastic part 220 falling off.

[0046] See Figure 5 , Figure 5 This is a schematic diagram of an embodiment of the anti-rotation hole of the balance block provided in this application.

[0047] In some embodiments, the cross-section of the anti-rotation hole 222 is crescent-shaped and arranged around the central axis 121, and the distance between the two inner surfaces of the anti-rotation hole 222 opposite to each other in the radial direction of the eccentric pin 120 is slightly larger than the radial dimension of the anti-rotation pin 130.

[0048] The anti-rotation hole 222 has a crescent-shaped cross-section, and this crescent-shaped anti-rotation hole 222 is arranged around the central axis 121 so that the cross-sectional shape of the anti-rotation hole 222 matches the movement trajectory of the anti-rotation pin 130. The distance between the two opposing inner surfaces of the anti-rotation hole 222 in the radial direction of the eccentric pin 120 represents the radial dimension of the anti-rotation hole 222, i.e., the width of the anti-rotation hole 222. The width of the anti-rotation hole 222 is slightly larger than the radial dimension of the anti-rotation pin 130. Therefore, the crescent-shaped anti-rotation hole 222 can have a certain length, thereby appropriately increasing the swing amplitude of the balancing body 210, and thus further reducing the radius of rotation. Furthermore, by appropriately increasing the swing amplitude of the balancing main body 210, by providing a crescent-shaped anti-rotation hole 222 and making the width of the anti-rotation hole 222 slightly larger than the radial dimension of the anti-rotation pin 130, the cross-sectional area of ​​the anti-rotation hole 222 can be reduced as much as possible, thereby minimizing the weight loss of the balancing main body 210, improving the ability of the balance block 200 to counteract centrifugal force, and reducing the risk of compressor damage.

[0049] Of course, in some other embodiments, the anti-rotation hole 222 can also be a round hole.

[0050] See Figure 6 and Figure 7 , Figure 6 yes Figure 1 A schematic diagram of one embodiment of the balance block is shown. Figure 7 yes Figure 5 The diagram shows an enlarged view of the balance block at the dashed box u.

[0051] In some embodiments, the balance part 240 has a fan-shaped clearance groove 241 on the side near the main shaft 110, a portion of the main shaft 110 is located in the fan-shaped clearance groove 241, the center of the fan-shaped clearance groove 241 is located on the rotation axis 111, and a limiting block 242 is provided at one end of the fan-shaped clearance groove 241 in the direction opposite to the rotation direction O, the limiting block 242 protruding from the inner wall of the fan-shaped clearance groove 241.

[0052] A sector-shaped clearance groove 241 is formed on the side of the balance section 240 near the main shaft 110, so that one end of the main shaft 110 is located inside the sector-shaped clearance groove 241. This makes the center of mass of the balance block 200 closer to the rotation axis 111 of the main shaft 110, which makes the balance block 200 more stable when the main shaft 110 drives the balance block 200 to rotate, reducing compressor vibration. The center of the sector-shaped clearance groove 241 is located on the rotation axis 111, so that the inner circumference of the sector-shaped clearance groove 241 and the outer circumference of the main shaft 110 can always maintain a certain gap during the rotation of the balance block 200 with the eccentric pin 120, thereby avoiding the main shaft 110. A limiting block 242 is provided at the end of the sector-shaped clearance groove 241 in the direction opposite to the rotation direction O. The limiting block 242 protrudes from the inner wall of the sector-shaped clearance groove 241, and the size of the protruding part must be larger than the gap between the inner wall of the sector-shaped clearance groove 241 and the outer wall of the main shaft 110. Therefore, when the balance block 200 swings in the rotation direction O, the limiting block 242 will interfere with the main shaft 110, thereby preventing the balance block 200 from swinging in the rotation direction O. The other end of the fan-shaped clearance groove 241 does not have a limiting block 242, so the balance block 200 is only allowed to rotate in the opposite direction to the rotation direction O, so as to reduce the turning radius and reduce the risk of compressor damage.

[0053] It is understood that this embodiment can be used alone or simultaneously with the embodiment described above that has anti-rotation hole 222, anti-rotation pin 130 and elastic part 220.

[0054] In some embodiments, the limiting block 242 includes an abutting arc surface 2421, the center of which is located on the side close to the main shaft 110, and one end of the abutting arc surface 2421 is connected to the inner wall of the fan-shaped clearance groove 241.

[0055] The limiting block 242 has an abutting arc surface 2421, which is the side that contacts the outer surface of the spindle 110. Since the balance block 200 swings around the central axis 121, during the swinging process of the balance block 200 in the rotation direction O, the limiting block 242 will move closer to the outer surface of the spindle 110 under the influence of the balance block 200, thereby limiting the rotation of the balance block 200 in the rotation direction O. The abutting arc surface 2421 is provided on the side of the limiting block 242 closest to the spindle 110, with the arc center of the abutting arc surface 2421 located close to the spindle 110. This increases the contact area between the limiting block 242 and the spindle 110 when the abutting arc surface 2421 contacts the outer surface of the spindle 110, reducing the risk of damage to the spindle 110. Furthermore, one end of the abutting arc surface 2421 is connected to one end of the fan-shaped clearance groove 241 in the opposite direction to the rotation direction O, so that when the spindle 110 restricts the balance block 200 through the abutting arc surface 2421, it can be smoother, thereby further reducing the risk of damage to the spindle 110.

[0056] In some embodiments, the limiting block 242 includes an avoidance arc surface 2422, the center of which is located on the side away from the main shaft 110, and the avoidance arc surface 2422 is connected to the end of the abutment arc surface 2421 away from the fan-shaped avoidance groove 241.

[0057] The limiting block 242 also has a relief arc surface 2422 connected to the abutting arc surface 2421. The relief arc surface 2422 is located at the end of the limiting block 242 away from the connection with the fan-shaped relief groove 241, and the center of the arc of the relief arc surface 2422 is located on the side away from the main shaft 110. Therefore, when the limiting block 242 limits the balance block 200 through the main shaft 110, the interference between the ends of the main shaft 110 and the limiting block 242 can be reduced. After the main shaft 110 abuts against the abutting arc surface 2421, the main shaft 110 can smoothly move away from the limiting block 242, thereby reducing the risk of damage due to large interference between the main shaft 110 and the limiting block 242.

[0058] In summary, the eccentric pin 120 and the anti-rotation pin 130 are spaced apart at the same end of the main shaft 110. The eccentric pin 120 is rotatably connected to the balance body 210 through the eccentric hole 211, and the anti-rotation pin 130 is inserted into the anti-rotation hole 222 and is restricted by the elastic part 220 to swing in the rotation direction O, so that the balance block 200 swings more in the opposite direction to the rotation direction O, thereby reducing the radius of rotation, which is more conducive to balancing centrifugal force and reducing the risk of compressor damage.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A compressor, characterized in that, The compressor includes: A rotating shaft includes a main shaft, an eccentric pin, and an anti-rotation pin. The main shaft is used to rotate about a rotation axis. The eccentric pin and the anti-rotation pin are spaced apart and disposed at the same end of the main shaft. The central axis of the eccentric pin is parallel to and does not coincide with the rotation axis. A balance block includes a balancing body and an elastic part. The balancing body has an eccentric hole and an anti-rotation hole. An eccentric pin is inserted into the eccentric hole, and an anti-rotation pin is inserted into the anti-rotation hole. A rotating shaft is used to drive the balance block to rotate in the rotation direction. The radial dimension of the anti-rotation pin is smaller than the radial dimension of the anti-rotation hole. The elastic part is at least partially disposed in the anti-rotation hole and is used to limit the oscillation of the balancing body relative to the anti-rotation pin in the rotation direction.

2. The compressor according to claim 1, characterized in that, The line connecting the central axis to the rotation axis is a reference line. The anti-rotation pin is offset on the side of the reference line opposite to the rotation direction. The elastic part is connected to the inner wall of the anti-rotation hole on the side of the rotation direction. The anti-rotation pin abuts against the elastic part on one side of the rotation direction, and the other side of the anti-rotation pin is close to or abuts against the inner wall of the anti-rotation hole.

3. The compressor according to claim 2, characterized in that, The direction perpendicular to the reference line from the center of the anti-rotation hole is the offset direction. The distance from the axis of the anti-rotation pin to the outer side of the anti-rotation pin in the offset direction is the first distance. The distance from the center line of the anti-rotation hole to the inner wall of the anti-rotation hole in the offset direction is the second distance. The distance from the axis of the anti-rotation pin to the reference line in the offset direction is the third distance. The distance from the center line of the anti-rotation hole to the reference line in the offset direction is the fourth distance. The relationship between the first distance, the second distance, the third distance, and the fourth distance is that the difference between the second distance and the first distance is less than or equal to the difference between the third distance and the fourth distance.

4. The compressor according to claim 1, characterized in that, The elastic part is a leaf spring, which is bent and connected to the anti-rotation hole at both ends. The bent part of the leaf spring abuts against the anti-rotation pin on the side away from the inner wall of the anti-rotation hole.

5. The compressor according to claim 2, characterized in that, The anti-rotation hole has a crescent-shaped cross-section arranged around the central axis, and the distance between the two inner surfaces of the anti-rotation hole opposite each other in the radial direction of the eccentric pin is slightly larger than the radial dimension of the anti-rotation pin.

6. The compressor according to claim 2, characterized in that, The balancing main body includes a rotating part and a balancing part. The balancing part is connected to one side of the rotating part. The eccentric hole is disposed in the rotating part. The anti-rotation hole is disposed in the balancing part. The eccentric pin and the anti-rotation pin are located on both sides of the rotation axis in the direction of the reference line.

7. The compressor according to claim 6, characterized in that, The balancing part has a fan-shaped clearance groove on the side near the main shaft. A portion of the main shaft is located in the fan-shaped clearance groove. The center of the fan-shaped clearance groove is located on the rotation axis. A limiting block is provided at one end of the fan-shaped clearance groove in the direction opposite to the rotation direction. The limiting block protrudes from the inner wall of the fan-shaped clearance groove.

8. The compressor according to claim 7, characterized in that, The limiting block includes an abutting arc surface, the center of which is located on the side close to the main shaft, and one end of the abutting arc surface is connected to the inner wall of the fan-shaped clearance groove.

9. The compressor according to claim 8, characterized in that, The limiting block includes an avoidance arc surface, the center of which is located on the side away from the main shaft, and the avoidance arc surface is connected to the end of the abutment arc surface away from the fan-shaped avoidance groove.

10. A vehicle, characterized in that, The vehicle includes a compressor as described in any one of claims 1 to 9.

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