Crankshaft assembly, scroll compressor and air conditioner

Abstract

The application discloses a crankshaft assembly, scroll compressor and air conditioner. The crankshaft assembly comprises a bracket, a thrust piece, a crankshaft and a limiting piece. The thrust piece is arranged on the bracket, and the thrust piece and the bracket enclose a cavity. One end of the crankshaft is rotatably arranged in the cavity. The thrust piece comprises a thrust body and a fixing part. The fixing part is arranged on the edge of the thrust body. The fixing part cooperates with the bracket to limit the rotation of the thrust piece relative to the bracket. The limiting piece is connected with the bracket and arranged on the side of the thrust piece away from the crankshaft. The limiting piece is provided with a gap in the circumferential direction. The fixing part and the gap are arranged opposite to each other along the axial direction of the crankshaft. By arranging the fixing part opposite to the gap, the edge position of the solid structure in the limiting piece can be effectively supported by the bracket, thereby reducing the probability of fracture of the limiting piece.

Description

Technical Field

[0001] This application belongs to the field of compressor technology, specifically relating to a crankshaft assembly, a scroll compressor, and an air conditioner. Background Technology

[0002] A crankshaft assembly typically includes a stationary scroll, a moving scroll, a crankshaft, thrust washers, and snap rings for limiting the axial position of the thrust washers.

[0003] Thrust washers typically have a lug structure. Since the retaining ring is suspended at the position corresponding to the lug structure of the thrust washer, when the crankshaft exerts a large impact force on the thrust washer during the transportation or operation of the crankshaft assembly, the thrust washer will transmit the impact force to the retaining ring, which can easily cause the retaining ring to break at the position corresponding to the lug structure. Utility Model Content

[0004] This application aims to provide a crankshaft assembly, a scroll compressor, and an air conditioner that solves the problem of snap ring breakage at the position corresponding to the lug structure.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a crankshaft assembly, which includes a bracket, a thrust member, a crankshaft, and a limiting member. The thrust member is disposed on the bracket, and the thrust member and the bracket enclose a cavity. One end of the crankshaft is rotatably disposed within the cavity. The thrust member includes a thrust body and a fixing portion. The fixing portion is disposed on the edge of the thrust body and cooperates with the bracket to restrict the rotation of the thrust member relative to the bracket. The limiting member is connected to the bracket and is disposed on the side of the thrust member opposite to the crankshaft. The limiting member has a notch in the circumferential direction, and the fixing portion is disposed opposite to the notch along the axial direction of the crankshaft.

[0007] The edge of the limiting member facing away from the thrust member needs to be supported by a portion of the bracket structure to ensure stable installation. To accommodate the fixing part, the bracket typically needs a groove to accommodate it. If the fixing part corresponds to the solid portion of the limiting member, the groove on the bracket will not provide support for the edge of the limiting member facing away from the thrust member, resulting in a portion of the limiting member being suspended. This suspended portion is prone to breakage under stress. In this embodiment, the circumferential notch of the limiting member is positioned axially opposite to the fixing part. With the groove on the bracket, the groove can be positioned to avoid the solid portion of the limiting member, allowing the edge of the limiting member to be effectively supported by the bracket, thus reducing the likelihood of breakage.

[0008] In some technical solutions, optionally, the number of fixing parts is at least one, wherein when the number of fixing parts is greater than or equal to two, at least two fixing parts are distributed at circumferential intervals along the thrust body.

[0009] The number of fixing parts can be one or more. When multiple fixing parts are used, these fixing parts are distributed circumferentially along the thrust body. The anti-rotation system formed by multiple fixing parts can better balance the circumferential load, prevent the thrust member from rotating slightly under alternating torque, and also reduce the wear of the thrust member. Moreover, the design of multiple fixing parts is equivalent to setting multiple support points in the circumferential direction, which enables the thrust member to maintain better stability when subjected to uneven loads. The combined action of multiple fixing parts decomposes the eccentric torque into multiple smaller components, thereby reducing the load on individual fixing parts and improving the operational stability of the entire system.

[0010] In some technical solutions, optionally, the thrust member and the limiting member are cut radially along the crankshaft, and the cross-sections of the thrust member and the limiting member are symmetrical along the straight line A.

[0011] The projections of the thrust bearing and the limiting bearing on the radial section of the crankshaft are symmetrical along the same straight line. This symmetrical arrangement ensures a uniform mass distribution of the thrust bearing and the limiting bearing, effectively avoiding vibration problems caused by mass eccentricity. When both the thrust bearing and the limiting bearing are symmetrically arranged relative to line A, the centrifugal force generated during crankshaft operation is balanced, reducing the generation of additional dynamic loads and thus minimizing the vibration level.

[0012] In some technical solutions, the bracket is optionally provided with a fixing groove, the fixing part extends into the fixing groove, and the fixing groove is oriented towards the notch.

[0013] One end of the fixing groove needs to be open to allow the fixing part to extend into the fixing groove. In this case, the slot on the bracket cannot provide support for the edge of the limiting member away from the thrust member, resulting in a part of the limiting member being suspended in the air. In this embodiment, the fixing groove and the notch of the limiting member are positioned opposite each other. Therefore, the fixing groove avoids the solid part of the limiting member, and the edges of the solid part of the limiting member can be partially supported by the bracket, thereby reducing the probability of the limiting member breaking.

[0014] In some technical solutions, the bracket may optionally have an annular groove, the annular groove being distributed circumferentially along the limiting member, the limiting member being partially embedded in the annular groove, and the limiting member being partially abutting against the thrust member.

[0015] The annular grooves are distributed circumferentially along the crankshaft, providing a reliable mounting base for the limiting component. The cooperation between the annular grooves and the limiting component forms a composite force-bearing structure, enabling the annular grooves to withstand both radial and axial loads simultaneously, thus improving the stability of the limiting component.

[0016] In some technical solutions, the limiting member can optionally be a retaining ring. Along the circumference of the retaining ring, the first end of the retaining ring is provided with a first retaining hole, the second end of the retaining ring is provided with a second retaining hole, and there is a notch between the first retaining hole and the second retaining hole.

[0017] The snap ring undergoes a special heat treatment process to obtain relatively ideal elasticity and strength characteristics. The first snap hole and the second snap hole are set at both ends of the snap ring. The first snap hole and the second snap hole not only form the necessary notch structure, but also provide convenience for the installation and disassembly of the limiting component.

[0018] In some technical solutions, optionally, the length of the fixing part is L from the side of the fixing part adjacent to the thrust body to the side away from the thrust body, and the diameter of the thrust body is R, where L and R satisfy: L≥0.2×R.

[0019] In this embodiment, the length of the fixing part and the diameter of the thrust body are correlated. When L≥0.2R, the fixing part has a sufficient lever arm length to effectively resist torsional torque. This proportional relationship helps the fixing part to have sufficient bending strength when subjected to torque, avoiding stress concentration problems caused by insufficient length.

[0020] In some technical solutions, optionally, the width of the fixing part is W, where W and R satisfy: W≥0.2×R.

[0021] In this embodiment, the width of the fixing part and the diameter of the thrust body are correlated, requiring W≥0.2R. This dimensional requirement is beneficial for the fixing part to have sufficient shear strength, to reliably transmit working torque, and to reduce the probability of the fixing part breaking, thereby improving the stability of the fit between the fixing part and the bracket.

[0022] Secondly, embodiments of this application propose a scroll compressor, which includes the crankshaft assembly in any of the above-described technical solutions.

[0023] Thirdly, this application provides an air conditioner that includes the scroll compressor described in the above-mentioned technical solution.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is one of the structural schematic diagrams of the crankshaft assembly according to an embodiment of the present utility model;

[0027] Figure 2 This is a second structural schematic diagram of the crankshaft assembly according to an embodiment of the present utility model;

[0028] Figure 3 This is a structural schematic diagram of the thrust member according to an embodiment of the present utility model;

[0029] Figure 4 This is a structural schematic diagram of the limiting member according to an embodiment of the present utility model;

[0030] Figure 5 This is a schematic diagram showing the cooperation between the bracket and the limiting member according to an embodiment of the present utility model.

[0031] Figure label:

[0032] 100 Crankshaft assembly, 110 Bracket, 111 Fixing groove, 112 Annular groove, 120 Thrust member, 121 Thrust body, 122 Fixing part, 130 Cavity, 140 Crankshaft, 150 Limiting member, 151 Notch, 152 First locking hole, 153 Second locking hole. Detailed Implementation

[0033] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0034] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following is combined with Figures 1-5 This invention describes a crankshaft assembly, a scroll compressor, and an air conditioner according to embodiments of the present invention.

[0038] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of this application, a crankshaft assembly 100 is proposed. The crankshaft assembly 100 includes a bracket 110, a thrust member 120, a crankshaft 140, and a limiting member 150. The thrust member 120 is disposed on the bracket 110, and the thrust member 120 and the bracket 110 enclose a cavity 130. One end of the crankshaft 140 is rotatably disposed within the cavity 130. The thrust member 120 includes a thrust body 121 and a fixing part 122. The fixing part 122 is disposed on the edge of the thrust body 121 and cooperates with the bracket 110 to restrict the rotation of the thrust member 120 relative to the bracket 110. The limiting member 150 is connected to the bracket 110 and is disposed on the side of the thrust member 120 away from the crankshaft 140. The limiting member 150 is circumferentially ( Figure 4 The arrow at C1 points to a notch 151, which is located along the axial direction of the crankshaft 140. Figure 1 (The arrow at H in the middle points to) The fixing part 122 is set opposite to the notch 151.

[0039] The bracket 110 serves as the basic support structure for the entire assembly. The bracket 110 can be made of high-strength cast iron or forged steel, enabling it to withstand the complex loads generated during crankshaft 140 operation. A thrust member 120 is disposed inside the bracket 110. Together with the bracket 110, the thrust member 120 forms a cavity 130 that accommodates a portion of the crankshaft 140. The crankshaft 140, as the core component for power transmission, is rotatably mounted within the cavity 130 via bearings. The thrust member 120 consists of a thrust body 121 and a fixing part 122. The fixing part 122 is an extension of the thrust body 121 and is located at the edge of the thrust body 121. The fixing part 122 and the bracket 110 form a locking relationship to prevent rotation. When the crankshaft 140 rotates at high speed, it generates significant torsional vibration. The locking part 122 and the bracket 110 effectively limit the rotational tendency of the thrust member 120. The limiting member 150 is installed on the bracket 110. The limiting member 150 is located on the side of the thrust member 120 away from the crankshaft 140. The limiting member 150 plays the role of axially limiting the thrust member 120.

[0040] The edge of the limiting member 150 facing away from the thrust member 120 needs to be supported by a portion of the structure of the bracket 110 to ensure stable installation of the limiting member 150 on the bracket 110. To install the fixing part 122, a groove is typically provided on the bracket 110 to accommodate the fixing part 122, which can extend into the groove. If the fixing part 122 corresponds to the solid portion of the limiting member 150, the groove on the bracket 110 will not be able to support the edge of the limiting member 150 facing away from the thrust member 120, resulting in a portion of the limiting member 150 being suspended in mid-air. This suspended portion of the limiting member 150 is prone to breakage under stress. In this embodiment, the notch 151 in the circumferential direction of the limiting member 150 and the fixing part 122 are arranged opposite each other in the axial direction. When the bracket 110 is slotted, the slotted position can avoid the solid part of the limiting member 150, and the edge of the limiting member 150 can be effectively supported by the bracket 110, thereby reducing the probability of the limiting member 150 breaking.

[0041] Furthermore, the solution in this embodiment ensures that the limiting member 150 and the fixing part 122 are in a non-contact state. When the crankshaft 140 generates an axial impact force, the force is first transmitted to the thrust member 120 through the end face of the crankshaft 140, and then evenly distributed through the plane of the thrust body 121. When the impact force arrives, the thrust member 120 will move axially, but its fixing part 122 will not strike the solid part of the limiting member 150 like a firing pin, thus avoiding stress concentration between the fixing part 122 and the limiting member 150 and reducing the probability of the limiting member 150 breaking.

[0042] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, optionally, the number of fixing parts 122 is at least one, wherein, when the number of fixing parts 122 is greater than or equal to two, at least two fixing parts 122 are along the circumference of the thrust body 121 ( Figure 3 The arrow at C2 points to the interval distribution.

[0043] The number of fixing parts 122 can be one or more. When multiple fixing parts 122 are used, these fixing parts 122 are distributed circumferentially along the thrust body 121. The anti-rotation system formed by multiple fixing parts 122 can better balance the circumferential load, prevent the thrust member 120 from rotating slightly under alternating torque, and also reduce the wear of the thrust member 120. Moreover, the design of multiple fixing parts 122 is equivalent to setting multiple support points in the circumferential direction, so that the thrust member 120 can maintain better stability when subjected to uneven loads. The multiple fixing parts 122 work together to decompose the off-center load moment into multiple smaller components, thereby reducing the load on a single fixing part 122 and improving the operational stability of the entire system.

[0044] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, optionally, along the radial direction of crankshaft 140 ( Figure 1 (The arrow at point O points to) cut out the thrust member 120 and the limiting member 150. The cross-sections of the thrust member 120 and the limiting member 150 are symmetrical along the line A.

[0045] The projections of the thrust member 120 and the limiting member 150 onto the radial section of the crankshaft 140 are symmetrical along the same straight line. This symmetrical arrangement ensures a uniform mass distribution of the thrust member 120 and the limiting member 150, effectively preventing vibration problems caused by mass eccentricity. When both the thrust member 120 and the limiting member 150 are symmetrically arranged relative to line A, the centrifugal force generated during the operation of the crankshaft 140 is balanced, reducing the generation of additional dynamic loads and thus minimizing the vibration level.

[0046] Moreover, both the thrust member 120 and the limiting member 150 adopt a symmetrical design, which is conducive to the uniform transmission of impact load along the circumference. When the scroll compressor is running, it helps to improve the stability of the thrust member 120 and the limiting member 150.

[0047] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments, optionally, the bracket 110 is provided with a fixing groove 111, and the fixing part 122 extends into the fixing groove 111 along the axial direction of the crankshaft 140, with the fixing groove 111 facing the notch 151.

[0048] The fixing groove 111 is arranged along the axial direction of the crankshaft 140, and the fixing groove 111 and the fixing part 122 form a mating relationship. This mating method ensures both the convenience of assembly and the reliability during operation. The fixing groove 111 not only serves as a guide and positioner, but also transmits torque through its mating with the fixing part 122, preventing the thrust member 120 from rotating.

[0049] One end of the fixing groove 111 needs to be open so that the fixing part 122 can be inserted into the fixing groove 111. In this case, the slot on the bracket 110 cannot provide support for the edge of the limiting member 150 away from the thrust member 120, which will cause a part of the limiting member 150 to be suspended. In this embodiment, the fixing groove 111 is arranged opposite to the notch 151 of the limiting member 150. Therefore, the fixing groove 111 avoids the solid part of the limiting member 150, and the edges of the solid part of the limiting member 150 can be partially supported by the bracket 110, thereby reducing the probability of the limiting member 150 breaking.

[0050] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, optionally, the bracket 110 is provided with an annular groove 112, the annular groove 112 is distributed along the circumference of the limiting member 150, the limiting member 150 is partially embedded in the annular groove 112, and the limiting member 150 partially abuts against the thrust member 120.

[0051] The annular groove 112 is distributed circumferentially along the crankshaft 140, providing a reliable mounting base for the limiting member 150. The cooperation between the annular groove 112 and the limiting member 150 forms a composite force-bearing structure, enabling the annular groove 112 to withstand radial and axial loads simultaneously, thus improving the stability of the limiting member 150.

[0052] The limit component 150 adopts an embedded installation method, which improves the ease of installation of the limit component 150 and facilitates the replacement of the limit component 150 in case of damage.

[0053] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments, optionally, the limiting member 150 is a retaining ring. Along the circumference of the retaining ring, the first end of the retaining ring is provided with a first retaining hole 152, the second end of the retaining ring is provided with a second retaining hole 153, and there is a notch 151 between the first retaining hole 152 and the second retaining hole 153.

[0054] The retaining ring undergoes a special heat treatment process to obtain relatively ideal elasticity and strength characteristics. The first retaining hole 152 and the second retaining hole 153 are provided at both ends of the retaining ring. The first retaining hole 152 and the second retaining hole 153 not only form the necessary notch 151 structure, but also provide convenience for the installation and removal of the limiting member 150.

[0055] The snap ring's elasticity allows it to effectively absorb impact energy, cushioning load changes through its own elastic deformation. During normal operation, the snap ring provides a stable preload, while under impact loads, it absorbs energy through deformation.

[0056] Since the retaining ring itself has a notch 151, using the retaining ring as a limiting element 150 eliminates the need to separately process other elastic structures to obtain the notch 151 as a limiting element 150, thereby improving processing convenience.

[0057] Of course, in other embodiments, the limiting member 150 can also be formed by bending a metal part.

[0058] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, optionally, the length of the fixing part 122 is L from the side adjacent to the thrust body 121 to the side away from the thrust body 121, and the diameter of the thrust body 121 is R, where L and R satisfy: L≥0.2×R.

[0059] In this embodiment, the length of the fixing part 122 and the diameter of the thrust body 121 are correlated. When L≥0.2R, the fixing part 122 has a sufficient lever arm length to effectively resist torsional torque. This proportional relationship is beneficial for the fixing part 122 to have sufficient bending strength when subjected to torque, avoiding the problem of stress concentration caused by insufficient length.

[0060] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, optionally, the width of the fixing part 122 is W, where W and R satisfy: W≥0.2×R.

[0061] In this embodiment, the width of the fixing part 122 and the diameter of the thrust body 121 are correlated, requiring W≥0.2R. This dimensional requirement is beneficial for the fixing part 122 to have sufficient shear strength, to reliably transmit working torque, and to reduce the probability of the fixing part 122 breaking, thereby improving the stability of the fit between the fixing part 122 and the bracket 110.

[0062] In the embodiments of this application, the crankshaft assembly 100 includes a bracket 110, a thrust member 120, and a retaining ring that restricts the axial position of the thrust member 120. The lug (fixed portion 122) of the thrust member 120 is located within the fixing groove 111 of the bracket 110 and also at the middle of the two tail ends of the retaining ring, preventing the lug from contacting the retaining ring. When the crankshaft 140 generates a large impact force on the thrust member 120, and the thrust member 120 transmits the impact force to the retaining ring, the lug does not contact the retaining ring. This ensures that no load is applied to the retaining ring at the localized location of the lug of the thrust member 120, and the portion outside the lug contacts the retaining ring more evenly, resulting in a more uniform force distribution and improved fatigue and impact strength of the retaining ring.

[0063] In this embodiment, there is one fixing part 122. In other embodiments, there may be more than one fixing part 122.

[0064] Both the thrust member 120 and the retaining ring are symmetrically arranged about the central axis of the crankshaft 140. This makes the contact between the thrust member 120 and the retaining ring, except for the lug, more uniform and the force more even.

[0065] The bracket 110 is provided with an annular groove 112, which communicates with the fixing groove 111. A part of the snap ring is embedded in the annular groove 112, and the snap ring provides axial limit for the thrust member 120.

[0066] When the crankshaft 140 exerts an axial impact force on the thrust member 120, especially during vibrations during transportation, the crankshaft 140 exerts a significant impact force on the thrust member 120. The thrust member 120 then transmits this impact force to the retaining ring. Because in related technologies, the portion of the retaining ring corresponding to the lug is partially suspended, the retaining ring is prone to breakage at this location. In this embodiment, a single-lug thrust member 120 is used, with the lug located in the middle of the tail of the retaining ring. This ensures that the thrust member 120 does not directly contact the retaining ring at the lug location, and the portion of the thrust member 120 in contact with the retaining ring is not suspended, thus preventing load from being applied to the suspended portion of the retaining ring and improving the fatigue and impact strength of the retaining ring.

[0067] In the embodiments of this application, a scroll compressor is proposed. The scroll compressor includes the crankshaft assembly in any of the above embodiments and can achieve the same technical effect, which will not be described again here.

[0068] In the embodiments of this application, an air conditioner is proposed, which includes the scroll compressor in the above embodiments and can achieve the same technical effect, which will not be described again here.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A crankshaft assembly, characterized in that, include: support; A thrust member is disposed on the bracket, and the thrust member and the bracket enclose a cavity. The thrust member includes a thrust body and a fixing part. The fixing part is disposed on the edge of the thrust body and cooperates with the bracket to restrict the rotation of the thrust member relative to the bracket. A crankshaft, one end of which is rotatably disposed within the cavity; A limiting member is connected to the bracket. The limiting member is located on the side of the thrust member away from the crankshaft. The limiting member has a notch in the circumferential direction. Along the axial direction of the crankshaft, the fixing part is arranged opposite to the notch.

2. The crankshaft assembly according to claim 1, characterized in that, The number of the fixing parts is at least one, wherein, when the number of the fixing parts is greater than or equal to two, at least two of the fixing parts are distributed at circumferential intervals along the thrust body.

3. The crankshaft assembly according to claim 1, characterized in that, The thrust member and the limiting member are cut radially along the crankshaft, and the cross-sections of the thrust member and the limiting member are symmetrical along the line A.

4. The crankshaft assembly according to claim 1, characterized in that, The bracket is provided with a fixing groove, the fixing part extends into the fixing groove, and the fixing groove is oriented towards the notch.

5. The crankshaft assembly according to claim 1, characterized in that, The bracket is provided with an annular groove, which is distributed along the circumference of the limiting member. The limiting member is partially embedded in the annular groove, and the limiting member partially abuts against the thrust member.

6. The crankshaft assembly according to any one of claims 1 to 5, characterized in that, The limiting component is a retaining ring. Along the circumference of the retaining ring, the first end of the retaining ring is provided with a first retaining hole, the second end of the retaining ring is provided with a second retaining hole, and the notch is between the first retaining hole and the second retaining hole.

7. The crankshaft assembly according to any one of claims 1 to 5, characterized in that, The length of the fixing part is L, and the diameter of the thrust body is R, extending from the side of the fixing part adjacent to the thrust body to the side away from the thrust body. L and R satisfy: L≥0.2×R.

8. The crankshaft assembly according to claim 7, characterized in that, The width of the fixed part is W, and W and R satisfy: W≥0.2×R.

9. A scroll compressor, characterized in that, include: The crankshaft assembly as described in any one of claims 1 to 8.

10. An air conditioner, characterized in that, include: The scroll compressor as described in claim 9.

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