Coupling, rotating shaft system and air conditioner

Abstract

The embodiment of the utility model provides a coupler, a rotating shaft system and an air conditioner. The coupling comprises a main body part and two shaft sleeves. The main body part has an accommodating cavity. The containing cavity penetrates through the two axial ends of the main body part. The two shaft sleeves are arranged in the containing cavity and connected with the main body part. The shaft sleeve is provided with a containing channel extending in the axial direction of the main body part. At least one shaft sleeve is provided with a blocking part. The blocking part is arranged at one end, in the axial direction of the main body part, of the containing channel. The blocking part is used for limiting the rotating shaft in the containing channel. According to the coupler provided by the embodiment of the invention, the blocking part is arranged at one end of the accommodating channel of at least one shaft sleeve to axially limit the rotating shafts, so that on one hand, direct contact of the two rotating shafts is avoided, shaking and abnormal noise of the rotating shafts are prevented, and the conditions of low assembly efficiency and not-in-place assembly are improved; parts of the rotating shaft system are reduced, the structures of the coupler and the rotating shaft are simplified, and the assembling efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning, and in particular to a coupling, a rotating shaft system and an air conditioner. Background Art

[0002] The fan assembly of the air conditioner usually has multiple rotating shafts, and the rotating shafts are connected by couplings to achieve the transmission of motion and torque.

[0003] In the related art, when the coupling is assembled on the rotating shaft, the rotating shaft and the end faces of the rotating shaft are usually separated by a rubber plug. However, after the coupling is assembled, the rubber plug inside the coupling cannot be observed from the outside of the coupling. The rubber plug is easy to be missed, shake and produce abnormal noise, resulting in low assembly efficiency and inadequate assembly. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a coupling, a rotating shaft system and an air conditioner to improve the assembly efficiency and low assembly quality of the coupling.

[0005] In order to achieve the above-mentioned object, a first aspect of an embodiment of the present application provides a coupling, comprising:

[0006] A main body, wherein the main body has a receiving cavity, and the receiving cavity runs through two ends of the main body along the axial direction;

[0007] Two shaft sleeves, which are arranged in the accommodating cavity and connected to the main body;

[0008] The sleeve has a receiving channel extending along the axial direction of the main body, and at least one of the sleeves is provided with a blocking portion, which is arranged at one end of the receiving channel along the axial direction of the main body, and is used to limit the rotating shaft in the receiving channel.

[0009] In some embodiments, the cavity wall of the accommodating cavity extends toward the central axis of the main body to form a positioning portion, and the two sleeves are respectively in contact with two sides of the positioning portion along the axial direction of the main body.

[0010] In some embodiments, a partial area of ​​the positioning portion is recessed to form a positioning groove, and the rotating shaft in the accommodating channel can extend into the positioning groove, and the positioning groove is used to limit the rotating shaft.

[0011] In some embodiments, both of the two sleeves are provided with the blocking portion, and the blocking portion is provided at one end of the two sleeves that is close to each other.

[0012] In some embodiments, one of the shaft sleeves is provided with the blocking portion, and the accommodating channel of the other shaft sleeve passes through both ends of the shaft sleeve along the axial direction.

[0013] In some embodiments, the coupling includes a locking piece, the main body is provided with at least two first locking holes, the two sleeves are provided with second locking holes, and the locking piece passes through the first locking hole and the second locking hole in sequence and is locked on the rotating shaft.

[0014] In some embodiments, one of the main body and the sleeve is provided with a first limiting protrusion extending along the axial direction of the main body, and the other is provided with a first limiting groove extending along the axial direction of the main body, and the first limiting protrusion cooperates with the first limiting groove, so that the main body can at least limit the sleeve in the circumferential direction.

[0015] A second aspect of an embodiment of the present application provides a rotating shaft system, comprising at least two rotating shafts and a coupling as described in any one of the above items, wherein the two bushings are respectively sleeved on the two rotating shafts.

[0016] In some embodiments, one of the sleeve and the rotating shaft is provided with a second limiting protrusion extending along the axial direction of the main body, and the other is provided with a second limiting groove extending along the axial direction of the main body, and the second limiting protrusion cooperates with the second limiting groove, so that the sleeve can at least limit the rotating shaft in the circumferential direction.

[0017] A third aspect of an embodiment of the present application provides an air conditioner, comprising a shaft system as described in any one of the above items.

[0018] The coupling provided in the embodiment of the present application is provided with a blocking portion at one end of the receiving channel of at least one sleeve, and the blocking portion is used to limit the rotating shaft in the receiving channel, so as to avoid direct contact between the two rotating shafts, prevent the shaking and abnormal sound of the rotating shaft, and improve the situation of low assembly efficiency and inadequate assembly. At the same time, the blocking portion is provided at one end of the receiving channel along the axial direction of the main body, so that the blocking portion can position the rotating shaft in the axial direction during assembly and prevent the rotating shaft from continuing to move into the main body, and there is no need to separate the two rotating shafts by other parts, so that assembly is more convenient, the parts when assembling the coupling are reduced, and the structure of the coupling and the rotating shaft is simplified, so that the assembly efficiency can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An exploded schematic diagram of a coupling provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of the rotating shaft system provided in an embodiment of the present application;

[0021] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0022] Figure 4 A schematic structural diagram of a rotating shaft system provided in another embodiment of the present application;

[0023] Figure 5 for Figure 4 Sectional view at the middle BB;

[0024] Figure 6 A schematic structural diagram of a rotating shaft system provided in another embodiment of the present application;

[0025] Figure 7 An exploded schematic diagram of a coupling provided in another embodiment of the present application.

[0026] Description of Reference Numerals

[0027] 10. Rotating shaft system; 11. Coupling; 111. Main body; 111a. Accommodating chamber; 111b. First limiting groove; 111c. Positioning portion; 111d. First locking hole; 111e. Positioning groove; 112. Bushing; 112a. Second limiting protrusion; 112b. First limiting protrusion; 112c. Second locking hole; 112d. Accommodating channel; 112e. Blocking portion; 113. Locking member; 12. Rotating shaft; 12a. Second limiting groove. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0029] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "axial" and "radial" refer to the axial direction and radial direction of the shaft, respectively. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0030] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "left", "right", "bottom", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0032] The fan assembly of the air conditioner usually has multiple rotating shafts, and the rotating shafts are connected by couplings to achieve the transmission of motion and torque.

[0033] In the related art, the connection and transmission method between the connecting shaft of the fan assembly and the motor shaft is through a coupling. The coupling is fixed to the connecting shaft and the motor shaft respectively by screws, and the motion and torque are transmitted by the friction between the screws and the shaft. The end faces of the motor shaft and the connecting shaft are separated by a rubber plug, but after the coupling is installed, the rubber plug inside the coupling cannot be seen from the outside of the coupling, and it is easy to miss the rubber plug, which causes the shaft to shake when rotating and produces abnormal noise, resulting in low assembly efficiency and inadequate assembly. In addition, the coupling also needs to achieve axial positioning of the two shafts by machining steps or slots for clamping the retaining spring on the shaft, resulting in more parts when assembling the coupling and more complicated assembly.

[0034] Based on the above situation, the first aspect of the embodiment of the present application provides a coupling 11, see Figures 1 to 5 . The coupling 11 includes a main body 111 and two sleeves 112. The main body 111 has a receiving chamber 111a. The receiving chamber 111a runs through both ends of the main body 111 in the axial direction. The two sleeves 112 are arranged in the receiving chamber 111a and connected to the main body 111. The sleeve 112 has a receiving channel 112d extending in the axial direction of the main body 111. At least one sleeve 112 is provided with a blocking portion 112e. The blocking portion 112e is arranged at one end of the receiving channel 112d in the axial direction of the main body 111. The blocking portion 112e is used to limit the rotating shaft 12 in the receiving channel 112d.

[0035] It should be noted that the coupling 11 is a widely used transmission component, which is mainly used to connect two rotating shafts 12 in different mechanisms together so that they rotate together and transmit torque.

[0036] The main body 111 has a receiving cavity 111 a , and the receiving cavity 111 a can be used to receive the shaft sleeve 112 .

[0037] The accommodating cavity 111 a passes through both ends of the main body 111 along the axial direction, that is, the main body 111 can be a sleeve-like part.

[0038] Exemplarily, the main body 111 is a flexible connecting sleeve, which has a certain flexibility and can produce a certain elastic deformation, thereby improving the impact resistance of the main body 111 and improving the situation where the main body 111 is easily damaged under impact.

[0039] Exemplarily, the main body 111 is a rubber member, thereby reducing the number of processing steps and lowering the production cost.

[0040] Specifically, the two sleeves 112 are respectively sleeved on one end of the two rotating shafts 12, and then the rotating shaft 12 with the sleeves 112 is respectively extended into the accommodating cavity 111a from both ends of the main body 111, and the rotating shaft 12, the sleeves 112 and the main body 111 are connected together, thereby realizing the connection between the coupling 11 and the two rotating shafts 12.

[0041] Exemplarily, the sleeve 112 is made of aluminum alloy.

[0042] Specifically, an interference fit or a clearance fit may be formed between the inner wall of the accommodating cavity 111 a of the main body 111 and the outer circle of the shaft sleeve 112 .

[0043] The shaft sleeve 112 has an accommodating channel 112 d extending along the axial direction of the main body 111 , and the accommodating channel 112 d is used to accommodate the rotating shaft 12 .

[0044] Exemplarily, the rotating shaft 12 extends into the accommodating channel 112 d and is connected to the shaft sleeve 112 .

[0045] At least one of the shaft sleeves 112 is provided with a blocking portion 112 e , that is, one shaft sleeve 112 may be provided with the blocking portion 112 e , or both shaft sleeves 112 may be provided with the blocking portion 112 e .

[0046] The blocking portion 112e is arranged at one end of the accommodating channel 112d along the axial direction of the main body 111, which means that the blocking portion 112e is connected to the sleeve 112, and the blocking portion 112e is arranged at one end of the accommodating channel 112d along the axial direction of the main body 111 close to the other sleeve 112, that is, the blocking portion 112e is located inside the main body 111.

[0047] It should be noted that the blocking portion 112e can be integrally formed with the shaft sleeve 112, or can be a split structure.

[0048] The blocking portion 112e is used to limit the rotating shaft 12 in the accommodating channel 112d, which can avoid direct contact between the two rotating shafts 12 and prevent the rotating shaft 12 from shaking and making abnormal noises. It replaces the assembly structure in which the rubber plug is installed at the end of the rotating shaft 12 in the related technology, and can improve the low assembly efficiency and inadequate assembly.

[0049] At the same time, the blocking portion 112e is arranged at one end of the accommodating channel 112d along the axial direction of the main body 111, so that the blocking portion 112e can position the rotating shaft 12 in the axial direction during assembly and prevent the rotating shaft 12 from continuing to move into the main body 111. There is no need to separate the two rotating shafts 12 through other components, which makes assembly more convenient. It replaces the step structure of the retaining spring and the rotating shaft 12 in the related technology, reduces the parts when assembling the coupling 11, simplifies the structure of the coupling 11 and the rotating shaft 12, and thus can improve the assembly efficiency.

[0050] It should be noted that after the coupling 11 is assembled, the blocking portion 112e and the rotating shaft 12 may be in axial contact or there may be a certain gap in the axial direction, which is not limited here.

[0051] The coupling 11 provided in the embodiment of the present application is provided with a blocking portion 112e at one end of the receiving channel 112d of at least one sleeve 112, and the blocking portion 112e is used to limit the rotation shaft 12 in the receiving channel 112d, so as to avoid direct contact between the two rotation shafts 12, prevent the rotation shaft 12 from shaking and generating abnormal noise, and improve the situation of low assembly efficiency and inadequate assembly. At the same time, the blocking portion 112e is provided at one end of the receiving channel 112d along the axial direction of the main body 111, so that the blocking portion 112e can position the rotation shaft 12 in the axial direction during assembly, and prevent the rotation shaft 12 from continuing to move into the main body 111, and there is no need to separate the two rotation shafts 12 by other parts, so that assembly is more convenient, the parts when assembling the coupling 11 are reduced, and the structure of the coupling 11 and the rotation shaft 12 is simplified, so that the assembly efficiency can be further improved.

[0052] For some examples, see Figure 3 and Figure 5 The cavity wall of the accommodating cavity 111a extends toward the central axis of the main body 111 to form a positioning portion 111c. The two sleeves 112 are in contact with both sides of the positioning portion 111c along the axial direction of the main body 111 respectively.

[0053] Exemplarily, the positioning portion 111 c is located between the two sleeves 112 , and the positioning portion 111 c is integrally formed with the main body 111 , so that the strength of the main body 111 can be strengthened by the positioning portion 111 c , thereby increasing the torsional resistance of the main body 111 .

[0054] Specifically, when the coupling 11 is connected to the two rotating shafts 12, the two sleeves 112 extend from the two ends of the main body 111 and are disposed in the accommodating cavity 111a, and at least part of the end faces of the two sleeves 112 can be respectively stopped on the opposite side walls of the positioning portion 111c. In this way, the two sleeves 112 can be axially positioned, thereby reducing the probability of the two sleeves 112 contacting each other and causing damage, and improving the assembly efficiency of the coupling 11.

[0055] Exemplarily, the positioning portion 111 c divides the accommodating cavity 111 a into two chambers that are not connected to each other.

[0056] Exemplarily, the main body 111 and the positioning portion 111c are respectively rubber parts, thereby reducing the number of processing steps and lowering the production cost.

[0057] Further, the main body 111 and the positioning portion 111c are an integrally formed part. In other words, the positioning portion 111c can be integrally formed on the inner wall of the accommodating cavity 111a of the main body 111. For example, the main body 111 and the positioning portion 111c can be integrally formed by injection molding.

[0058] Thus, the accommodating cavity 111a extends toward the central axis of the main body 111 to form a positioning portion 111c. The two sleeves 112 are respectively in contact with the positioning portion 111c on both sides of the axial direction of the main body 111, so that the positioning portion 111c can axially position the two sleeves 112, which is convenient for assembly and reduces the probability of damage caused by contact between the two sleeves 112.

[0059] For some examples, see Figure 3 , a part of the positioning portion 111c is recessed to form a positioning groove 111e. The rotating shaft 12 in the accommodating channel 112d can extend into the positioning groove 111e. The positioning groove 111e is used to limit the rotating shaft 12.

[0060] The rotating shaft 12 in the accommodating channel 112d can extend into the positioning groove 111e, that is, the accommodating channel 112d passes through both ends of the shaft sleeve 112 in the axial direction, and the rotating shaft 12 in the accommodating channel 112d can pass from one end of the accommodating channel 112d to the other end and contact the positioning groove 111e, so as to realize the axial limit of the rotating shaft 12 by the positioning groove 111e, making the assembly more convenient, and at the same time avoiding the direct contact of the two rotating shafts 12, playing the function of preventing the shaking and abnormal sound of the rotating shaft 12. At the same time, it can also improve the situation that the two rotating shafts 12 are in direct contact due to the easy omission of the rubber plug, thereby improving the quality of assembly.

[0061] It should be noted that the positioning groove 111e may be formed only on one side of the positioning portion 111c along the axial direction, or may be formed on both sides.

[0062] Exemplarily, a partial area of ​​the positioning portion 111 c is recessed along the axial direction of the main body 111 to form a positioning groove 111 e .

[0063] Exemplarily, a partial area of ​​the positioning groove 111e is provided with a through hole along the axial direction of the main body 111, and the through hole penetrates both sides of the positioning portion 111c along the axial direction, thereby dividing the accommodating cavity 111a into two mutually conductive chambers.

[0064] Here, a positioning groove 111e is formed by recessing a partial area of ​​the positioning portion 111c, and the positioning groove 111e is used to limit the rotating shaft 12, thereby achieving axial limitation of the rotating shaft 12 by the positioning groove 111e, making assembly more convenient and improving assembly efficiency. At the same time, it can also avoid direct contact between the two rotating shafts 12, preventing the rotating shaft 12 from shaking and generating abnormal noise.

[0065] For some examples, see Figure 5 , both shaft sleeves 112 are provided with a blocking portion 112e, and the blocking portion 112e is provided at one end of the two shaft sleeves 112 which are close to each other.

[0066] The blocking portion 112e is disposed at one end of the two sleeves 112 close to each other, that is, one end of the sleeve 112 provided with the blocking portion 112e is located in the accommodating cavity 111a and is arranged opposite to each other. The blocking portion 112e axially limits the rotating shaft 12 located in the accommodating channel 112d.

[0067] Therefore, the two sleeves 112 both axially limit the rotating shaft 12 located in the accommodating channel 112d through the blocking portion 112e, so that the two rotating shafts 12 will not directly contact each other, and the rotating shaft 12 will not contact the other sleeve 112. The two sleeves 112 have the same structure, which increases the versatility and interchangeability of the sleeves 112, thereby further improving the efficiency of assembly.

[0068] In some embodiments, one of the shaft sleeves 112 is provided with a blocking portion 112 e , and the accommodating channel 112 d of the other shaft sleeve 112 passes through both ends of the shaft sleeve 112 along the axial direction.

[0069] One of the shaft sleeves 112 is provided with a blocking portion 112 e , which means that one of the shaft sleeves 112 axially limits the rotating shaft 12 located in the accommodating channel 112 d of the shaft sleeve 112 through the blocking portion 112 e .

[0070] The accommodating channel 112d of the other sleeve 112 passes through both ends of the sleeve 112 in the axial direction, that is, the other sleeve 112 is not provided with a blocking portion 112e, and the accommodating channel 112d passes through both ends of the sleeve 112 in the axial direction, and the rotating shaft 12 located in the accommodating channel 112d of the sleeve 112 is axially limited by the positioning groove 111e.

[0071] In this way, the two sleeves 112 respectively limit the axial position of the rotating shaft 12 through the blocking portion 112e and the positioning groove 111e, thereby optimizing the structure of the coupling 11 and the rotating shaft 12 and improving the assembly efficiency.

[0072] For some examples, see Figures 1 to 5The coupling 11 includes a locking member 113. The main body 111 is provided with at least two first locking holes 111d. The two sleeves 112 are provided with second locking holes 112c. The locking member 113 passes through the first locking hole 111d and the second locking hole 112c in sequence and is locked on the rotating shaft 12.

[0073] Exemplarily, the locking member 113 is a locking screw or a locking bolt, etc., which is not limited here.

[0074] It should be noted that a plane can be set on the cylindrical surface of the rotating shaft 12, and the locking piece 113 passes through the first locking hole 111d and the second locking hole 112c in sequence and is locked on the plane of the rotating shaft 12, thereby increasing the contact area between the locking piece 113 and the rotating shaft 12, increasing the friction force, and improving the connection strength between the locking piece 113 and the rotating shaft 12.

[0075] Thus, the locking piece 113 passes through the first locking hole 111d and the second locking hole 112c in sequence and is locked on the rotating shaft 12, so that the main body 111, the two sleeves 112 and the rotating shaft 12 are fixed, the connection strength between the locking piece 113 and the rotating shaft 12 is increased, and the reliability of the locking piece 113 fixing the rotating shaft 12 is improved.

[0076] For some examples, see Figure 6 to Figure 7 One of the main body 111 and the sleeve 112 is provided with a first limiting protrusion 112b extending along the axial direction of the main body 111, and the other is provided with a first limiting groove 111b extending along the axial direction of the main body 111. The first limiting protrusion 112b cooperates with the first limiting groove 111b, and the main body 111 can at least limit the sleeve 112 in the circumferential direction.

[0077] It should be noted that the sleeve 112 may be provided with a first limiting protrusion 112b extending along the axial direction of the main body 111, and the main body 111 may be provided with a first limiting groove 111b extending along the axial direction of the main body 111; or the main body 111 may be provided with a first limiting protrusion 112b extending along the axial direction of the main body 111, and the sleeve 112 may be provided with a first limiting groove 111b extending along the axial direction of the main body 111.

[0078] Exemplarily, the number of the first limiting protrusions 112b may be one, two, three, four, five or six, etc., which is not limited here.

[0079] For example, the number of the first limiting grooves 111 b may be one, two, three, four, five or six, etc., which is not limited here.

[0080] The first limiting protrusion 112b cooperates with the first limiting groove 111b, so that the circumferential side wall of the first limiting protrusion 112b contacts the circumferential side wall of the first limiting groove 111b, so that the main body 111 can at least limit the shaft sleeve 112 in the circumferential direction, and the movement and torque of the driven rotating shaft 12 are transmitted to the driven rotating shaft 12 through the circumferential limitation between the main body 111 and the shaft sleeve 112, thereby further improving the movement and torque transmission method between the coupling 11 and the rotating shaft 12 and reducing the risk of transmission failure.

[0081] The first limiting protrusion 112b may be integrally formed with the shaft sleeve 112 or the main body 111 on which it is disposed, or may be a split design.

[0082] The main body 111 can at least limit the position of the sleeve 112 in the circumferential direction, that is, the cooperation between the first limiting protrusion 112b and the first limiting groove 111b can also enable the main body 111 to limit the position of the sleeve 112 in the axial direction.

[0083] The inner wall of the accommodating cavity 111 a of the main body 111 and the outer wall of the shaft sleeve 112 may be in a clearance fit, an interference fit, an adhesive fit or other forms, which are not limited here.

[0084] Here, through the cooperation between the first limiting protrusion 112b and the first limiting groove 111b, the circumferential limitation between the main body 111 and the sleeve 112 is strengthened, thereby increasing the transmission reliability between the main body 111 and the sleeve 112, thereby further improving the movement and torque transmission mode between the coupling 11 and the rotating shaft 12, and reducing the risk of transmission failure.

[0085] The second aspect of the present application provides a rotating shaft system 10. Figures 2 to 6 The rotating shaft system 10 includes at least two rotating shafts 12 and a coupling 11 provided in any embodiment of the present application, and two shaft sleeves 112 are respectively sleeved on the two rotating shafts 12 .

[0086] It should be noted that the two rotating shafts 12 connected by the coupling 11 can be a driving shaft and a driven shaft respectively.

[0087] Exemplarily, the two rotating shafts 12 connected by the coupling 11 are respectively the output rotating shaft 12 of the motor and the dragged connecting shaft, or are respectively two connecting shafts, or are respectively two motor rotating shafts 12 .

[0088] Among them, the function of the connecting shaft can be a transition connection, transmitting motion and torque from the motor shaft to other components.

[0089] Exemplarily, the rotating shaft 12 may be a hollow shaft or a solid shaft, which is not limited here.

[0090] Illustratively, the shaft system 10 provided in the embodiment of the present application can be applied to a fan, a fan assembly or an air conditioner.

[0091] Illustratively, the coupling 11 provided in the embodiment of the present application can be applied to a fan, a fan assembly or an air conditioner.

[0092] The rotating shaft system 10 provided in the embodiment of the present application is provided with a blocking portion 112e at one end of the receiving channel 112d of at least one sleeve 112 of the coupling 11. The blocking portion 112e is used to limit the rotating shaft 12 in the receiving channel 112d, which can avoid direct contact between the two rotating shafts 12, prevent the shaking and abnormal sound of the rotating shaft 12, and improve the low assembly efficiency and the situation of inadequate assembly. At the same time, the blocking portion 112e is provided at one end of the receiving channel 112d along the axial direction of the main body 111, so that the blocking portion 112e can position the rotating shaft 12 in the axial direction during assembly and prevent the rotating shaft 12 from continuing to move into the main body 111. It is not necessary to separate the two rotating shafts 12 by other parts, making assembly more convenient, reducing the parts when assembling the coupling 11, improving the assembly efficiency of the coupling 11, simplifying the transmission structure of the rotating shaft system 10, and thus improving the assembly efficiency of the rotating shaft system 10.

[0093] For some examples, see Figure 6 to Figure 7 One of the sleeve 112 and the rotating shaft 12 is provided with a second limiting protrusion 112a extending along the axial direction of the main body 111, and the other is provided with a second limiting groove 12a extending along the axial direction of the main body 111. The second limiting protrusion 112a cooperates with the second limiting groove 12a, and the sleeve 112 can at least limit the rotating shaft 12 in the circumferential direction.

[0094] It should be noted that the sleeve 112 may be provided with a second limiting protrusion 112a extending along the axial direction of the main body 111, and the rotating shaft 12 may be provided with a second limiting groove 12a extending along the axial direction of the main body 111; or the rotating shaft 12 may be provided with a second limiting protrusion 112a extending along the axial direction of the main body 111, and the sleeve 112 may be provided with a second limiting groove 12a extending along the axial direction of the main body 111.

[0095] Exemplarily, the second limiting protrusion 112a is a key, and the second limiting groove 12a is a keyway.

[0096] Exemplarily, the number of the second limiting protrusions 112a may be one, two, three, four, five or six, etc., which is not limited here.

[0097] Exemplarily, the number of the second limiting grooves 12a may be one, two, three, four, five or six, etc., which is not limited here.

[0098] The number of the second limiting protrusions 112a and the number of the second limiting grooves 12a may be the same, and the second limiting protrusions 112a and the second limiting grooves 12a correspond one to one.

[0099] The second limiting protrusion 112a cooperates with the second limiting groove 12a, so that the circumferential side wall of the second limiting protrusion 112a can contact the circumferential side wall of the second limiting groove 12a, so that the sleeve 112 can at least limit the rotating shaft 12 in the circumferential direction, and transmit the movement and torque of the driven rotating shaft 12 to the driven rotating shaft 12 through circumferential limitation. That is to say, the second limiting protrusion 112a cooperates with the second limiting groove 12a to realize the transmission of force between the sleeve 112 and the rotating shaft 12, which is beneficial to improve the reliability of the connection structure between the sleeve 112 and the rotating shaft 12, thereby improving the transmission mode of movement and torque between the coupling 11 and the rotating shaft 12, and reducing the risk of transmission failure. At the same time, positioning can also be carried out through the second limiting protrusion 112a and the second limiting groove 12a, which is beneficial to improving assembly efficiency.

[0100] The second limiting protrusion 112a can be integrally formed with the shaft sleeve 112 or the rotating shaft 12 on which it is disposed, or can be a split design.

[0101] Exemplarily, the rotating shaft system 10 includes a connecting shaft, a coupling 11 and a motor shaft. Both the motor shaft and the connecting shaft have keyways. The bushing 112 is an aluminum part, and the main body 111 is a rubber part. The two bushings 112 are located at both ends of the coupling 11 and have key features that cooperate with the keyways. The connecting shaft and the motor shaft are respectively inserted into the bushings 112 on the left and right sides of the coupling 11. The key features on the coupling 11 are respectively assembled with the keyway features on the connecting shaft and the motor shaft. The motion and torque are transmitted by the cooperation of the key and the keyway, which reduces the number of parts, improves the transmission mode of the motion and torque between the coupling 11 and the rotating shaft 12, and reduces the risk of transmission failure. At the same time, positioning can also be performed by the key and the keyway, which is conducive to improving assembly efficiency.

[0102] A third aspect of the embodiments of the present application provides an air conditioner, comprising the shaft system 10 provided in any embodiment of the present application.

[0103] Exemplarily, the air conditioner includes a fan or a fan assembly.

[0104] Exemplarily, the coupling 11 is used for a fan blade assembly of an air-conditioning duct unit.

[0105] The air conditioner provided by the embodiment of the present application is provided with a blocking portion 112e at one end of the receiving channel 112d of at least one sleeve 112 of the rotating shaft system 10 of the air conditioner. The blocking portion 112e is used to limit the rotating shaft 12 in the receiving channel 112d, so as to avoid direct contact between the two rotating shafts 12, prevent the rotating shaft 12 from shaking and generating abnormal noise, and improve the situation of low assembly efficiency and inadequate assembly. At the same time, the blocking portion 112e is provided at one end of the receiving channel 112d along the axial direction of the main body 111, so that the blocking portion 112e can position the rotating shaft 12 in the axial direction during assembly and prevent the rotating shaft 12 from continuing to move into the main body 111, and it is not necessary to separate the two rotating shafts 12 by other parts, so that assembly is more convenient, the parts when assembling the coupling 11 are reduced, the assembly efficiency of the coupling 11 is improved, and the transmission structure of the rotating shaft system 10 is simplified, so as to improve the situation of low assembly efficiency and inadequate assembly of the air conditioner, thereby improving the stability and reliability of the operation of the air conditioner.

[0106] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 embodiments of the present application. In the present application, the schematic representation of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0107] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A coupling, applied to an air conditioner, characterized in that: include: A main body, wherein the main body has a receiving cavity, and the receiving cavity passes through two ends of the main body along the axial direction; Two shaft sleeves, which are arranged in the accommodating cavity and connected to the main body; The sleeve has a receiving channel extending along the axial direction of the main body, and at least one of the sleeves is provided with a blocking portion, which is arranged at one end of the receiving channel along the axial direction of the main body, and is used to limit the rotating shaft in the receiving channel.

2. The coupling according to claim 1, characterized in that: The cavity wall of the accommodating cavity extends toward the central axis of the main body to form a positioning portion, and the two sleeves are respectively in contact with two sides of the positioning portion along the axial direction of the main body.

3. The coupling according to claim 2, characterized in that: A partial area of ​​the positioning portion is recessed to form a positioning groove, and the rotating shaft in the accommodating channel can extend into the positioning groove, and the positioning groove is used to limit the rotating shaft.

4. The coupling according to claim 1, characterized in that: The two shaft sleeves are both provided with the blocking portion, and the blocking portion is arranged at one end of the two shaft sleeves close to each other.

5. The coupling according to claim 1, characterized in that: One of the shaft sleeves is provided with the blocking portion, and the accommodating channel of the other shaft sleeve passes through both ends of the shaft sleeve along the axial direction.

6. The coupling according to claim 1, characterized in that: The coupling includes a locking piece, the main body is provided with at least two first locking holes, the two sleeves are provided with second locking holes, and the locking piece passes through the first locking hole and the second locking hole in sequence and is locked on the rotating shaft.

7. The coupling according to claim 1, characterized in that: One of the main body and the sleeve is provided with a first limiting protrusion extending along the axial direction of the main body, and the other is provided with a first limiting groove extending along the axial direction of the main body, the first limiting protrusion cooperates with the first limiting groove, and the main body can at least limit the sleeve in the circumferential direction.

8. A rotating shaft system, characterized in that: It comprises at least two rotating shafts and the coupling according to any one of claims 1 to 7, wherein the two bushings are respectively sleeved on the two rotating shafts.

9. The shaft system according to claim 8, characterized in that: One of the sleeve and the rotating shaft is provided with a second limiting protrusion extending along the axial direction of the main body, and the other is provided with a second limiting groove extending along the axial direction of the main body. The second limiting protrusion cooperates with the second limiting groove, and the sleeve can at least limit the rotating shaft in the circumferential direction.

10. An air conditioner, characterized in that: Comprising the shaft system as claimed in claim 8 or 9.

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