Moving shaft connecting assembly and air conditioner

Abstract

The utility model discloses a movable shaft connecting assembly and an air conditioner, relates to the field of refrigeration and is used for realizing reliable driving connection of two shafts. The movable shaft connecting assembly comprises a first shaft, a second shaft and a locking assembly. The first shaft comprises a first mounting hole; the second shaft is mounted in the first mounting hole and is in driving connection with the first shaft, so that one of the first shaft and the second shaft rotates to drive the other one to rotate; the locking assembly is constructed to limit the axial relative displacement of the first shaft and the second shaft; the locking assembly comprises a gland, a fastener and an anti-loosening assembly which are all located in the first mounting hole. The first shaft, the gland and the second shaft are fixedly connected through the fastener; the anti-loosening assembly is configured to prevent the fastener from loosening. According to the technical scheme, connection between the first shaft and the second shaft is more reliable.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration, in particular to a dynamic shaft connection component and an air conditioner. Background Art

[0002] In the refrigeration industry, most compressors use direct-drive servo motors. The inventors discovered that bolts connecting the motor rotor to the compressor rotor are unreliable. Vibration generated by long-term compressor operation and the forces generated by switching operating conditions can reduce the tightening force between the threads, causing the screws and the compression block to fall out and leading to compressor failure. Utility Model Content

[0003] The utility model provides a dynamic shaft connection assembly and an air conditioner, which are used to increase the reliability of the connection between two shafts.

[0004] The present invention provides a movable shaft connection assembly, comprising:

[0005] a first shaft comprising a first mounting hole;

[0006] a second shaft mounted in the first mounting hole, and the second shaft is drivingly connected to the first shaft, so that the rotation of one of the first shaft and the second shaft drives the other to rotate; and

[0007] A locking assembly is constructed to limit the axial relative displacement of the first shaft and the second shaft; the locking assembly includes a pressure cover, a fastener, and an anti-loosening assembly, all of which are located in the first mounting hole; the fastener fixes the first shaft, the pressure cover, and the second shaft together; the anti-loosening assembly is constructed to prevent the fastener from loosening.

[0008] In some embodiments, the first mounting hole includes a first hole segment and a second hole segment that are connected; the inner diameter of the first hole segment is larger than the inner diameter of the second hole segment; and one end of the second shaft is installed in the second hole segment.

[0009] In some embodiments, the gland comprises:

[0010] a cover body, a portion of the cover body being located in the first hole segment, and the remaining portion of the cover body being located in the second hole segment; the cover body comprising a receiving groove;

[0011] a flange mounted on the outer periphery of the cover, or the flange is integral with the cover; the flange is located in the first hole section; and

[0012] A protrusion is located at the bottom of the receiving groove of the cover body, and the protrusion and the cover body are fixedly connected or integrated; the pressure cover is provided with a second mounting hole, and the second mounting hole passes through the protrusion and the bottom of the receiving groove;

[0013] Part of the fastener is located in the receiving groove and the second mounting hole, and the rest of the fastener is located inside the second shaft.

[0014] In some embodiments, the fastener comprises:

[0015] a bolt head located in the receiving groove; and

[0016] The screw is integral with the bolt head; one end of the screw facing the bolt head is located in the second mounting hole, and the other end of the screw away from the bolt head is located outside the pressure cover and is screwed into the inside of the second shaft to form a threaded connection.

[0017] In some embodiments, the anti-loosening assembly includes:

[0018] A locking block, comprising a third mounting hole; the locking block is located inside the receiving groove, and the locking block is sleeved on the outside of the protrusion through the third mounting hole; the locking block is located between the bolt head and the bottom of the receiving groove; the end surface of the locking block facing the bolt head is provided with a first locking tooth, and the end surface of the bolt head facing the locking block is provided with a second locking tooth; and

[0019] an elastic member, located between the locking block and the bottom wall of the accommodating groove;

[0020] Wherein, the locking assembly includes a locking state. When the locking assembly is in the locking state, the fastener fixedly connects the first shaft and the second shaft, and the first locking tooth of the locking block engages with the second locking tooth of the fastener to prevent the fastener from reversing.

[0021] In some embodiments, when the locking assembly is in a locked state, a first gap exists between the locking block and the bottom of the accommodating groove.

[0022] In some embodiments, the locking assembly further includes an unlocked state. When the locking assembly is in the unlocked state, the locking block leaves the bolt head of the fastener under the action of external force, and a second gap is formed between the locking block and the bolt head of the fastener.

[0023] In some embodiments, a guide groove is provided on the groove wall of the accommodating groove, a guide block is provided on the edge of the locking block, and the guide block is installed in the guide groove.

[0024] In some embodiments, there are multiple guide blocks, and each guide block is symmetrically arranged relative to the axis of the third mounting hole of the locking block.

[0025] In some embodiments, there are multiple guide grooves and multiple guide blocks, and the guide grooves and the guide blocks are arranged in a one-to-one correspondence.

[0026] In some embodiments, a first mounting groove is provided on one side of the locking block facing the bottom of the accommodating groove, and a second mounting groove is provided on the bottom of the accommodating groove; one end of the elastic member is located in the first mounting groove, and the other end of the elastic member is located in the second mounting groove.

[0027] In some embodiments, the elastic members are in multiple groups, and the multiple groups of elastic members are arranged at intervals along the circumference of the fastener.

[0028] In some embodiments, H is greater than the sum of A and B; wherein H is the axial height of the protrusion along the first axis, A is the minimum length of the elastic member, and B is the axial height of the locking block along the first axis.

[0029] An embodiment of the present utility model further provides an air conditioner, comprising the dynamic shaft connection assembly provided by any technical solution of the present utility model.

[0030] In some embodiments, the first shaft is a motor shaft, the second shaft is a compressor rotor shaft, and the motor shaft and the compressor rotor shaft are drive-connected via a key connection.

[0031] The dynamic shaft connection assembly provided by the above technical solution includes a first shaft, a second shaft and a locking assembly. The first shaft and the second shaft are driven and connected, and one shaft can drive the other shaft to rotate; in addition, the first shaft and the second shaft are also locked by the locking assembly, and the locking assembly locks the first shaft and the second shaft through a fastener; in addition to having a locking function, the locking assembly can also prevent the fastener from loosening, making the connection of the fastener more stable and reliable. During the operation of the first shaft and the second shaft, since the fastener is not easy to loosen, the drive connection between the first shaft and the second shaft is more reliable and the performance is more stable. The performance of equipment with the dynamic shaft connection assembly (such as air conditioners, etc.) is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 This is a schematic cross-sectional view of a dynamic shaft connection assembly provided in an embodiment of the present utility model.

[0034] Figure 2 This is a schematic diagram of the locking assembly of the dynamic shaft connection assembly provided in an embodiment of the present utility model in its original state.

[0035] Figure 3 This is a schematic diagram of the locking assembly of the dynamic shaft connection assembly provided in an embodiment of the present utility model in a locked state.

[0036] Figure 4 Schematic diagram of the locking assembly of the dynamic shaft connection assembly provided in an embodiment of the present utility model in the unlocked state.

[0037] Figure 5 A schematic top view of the locking assembly of the dynamic shaft connection assembly provided in an embodiment of the present utility model.

[0038] Figure 6 A schematic cross-sectional view of a gland of a locking assembly of a movable shaft connection assembly provided in an embodiment of the present invention.

[0039] Figure 7 A schematic diagram of the three-dimensional structure of the locking block of the locking assembly of the dynamic shaft connection assembly provided by an embodiment of the utility model.

[0040] Figure 8 A schematic diagram of the three-dimensional structure of the locking block of the locking assembly of the dynamic shaft connection assembly provided by an embodiment of the present utility model from another perspective.

[0041] Figure 9 A schematic diagram of the three-dimensional structure of a fastener of a locking assembly of a dynamic shaft connection assembly provided in an embodiment of the present utility model.

[0042] Reference numerals:

[0043] 1. First axis; 2. Second axis; 3. Locking assembly;

[0044] 11. First mounting hole; 111. First hole section; 112. Second hole section;

[0045] 31. Gland; 32. Fastener; 33. Anti-loosening assembly;

[0046] 311, cover; 312, flange; 313, protrusion; 311a, receiving groove; 311b, second mounting groove; 311c, guide groove; 311d, second mounting hole;

[0047] 321, bolt head; 322, screw; 32a, second locking tooth;

[0048] 331, locking block; 332, elastic member;

[0049] 331a, third mounting hole; 331b, first mounting groove; 331c, guide block; 331d, first locking tooth. DETAILED DESCRIPTION

[0050] The following combination Figures 1 to 9The technical solution provided by the present invention is described in more detail. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions and numerical values ​​described in these embodiments should be interpreted as merely exemplary and not as limiting.

[0051] The terms "first," "second," and similar terms used in this disclosure do not denote any order, quantity, or importance, but are simply used to distinguish one part from another. Terms such as "include" or "comprise" mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements.

[0052] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0053] All terms used in this disclosure, including technical or scientific terms, have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0054] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment are considered part of the specification.

[0055] The dimensions of the various parts shown in the drawings are not drawn in accordance with actual proportions. In the drawings, common structural elements or structural elements of the same type are given the same reference numerals, and their repeated descriptions are appropriately omitted.

[0056] In the following description of the specific embodiment, for the convenience of explanation, the axial direction of the first shaft 1 and the second shaft 2 is defined as the axial direction X of the dynamic shaft connection assembly, see Figure 1 shown.

[0057] See also Figures 1 to 9 , especially Figure 1 and Figure 2The embodiment of the present invention provides a dynamic shaft connection assembly, including a first shaft 1, a second shaft 2 and a locking assembly 3. The first shaft 1 includes a first mounting hole 11, and the first mounting hole 11 passes through the first shaft 1 along the axial direction X of the first shaft 1. The second shaft 2 (specifically Figure 1 The right end of the second shaft 2 is mounted in the first mounting hole 11, and the second shaft 2 is drivingly connected to the first shaft 1. The locking assembly 3 includes a gland 31, a fastener 32, and an anti-loosening assembly 33, all of which are located in the first mounting hole 11. The fastener 32 securely connects the first shaft 1, the gland 31, and the second shaft 2, and is specifically connected by a bolt, for example. The anti-loosening assembly 33 is configured to prevent the fastener 32 from loosening.

[0058] The first shaft 1 and the second shaft 2 are the moving shafts of different components. A moving shaft refers to a shaft that can rotate. For example, the first shaft 1 is the output shaft of the motor, and the second shaft 2 is the power input shaft of the compressor rotor. The first shaft 1 and the second shaft 2 are drive-connected, and the rotation of the first shaft 1 drives the rotation of the second shaft 2. The specific implementation method of the drive connection is, for example, a key connection. Considering that there may be axial movement between the first shaft 1 and the second shaft 2 during the actual operation of the product, the locking assembly 3 is also required to limit the axial relative displacement of the first shaft 1 and the second shaft 2, so that the first shaft 1 and the second shaft 2 do not have axial relative displacement.

[0059] The relative positions of the first shaft 1 and the second shaft 2 are as follows: the first shaft 1 and the second shaft 2 are sleeved together. Specifically, the first shaft 1 includes a first mounting hole 11, and the first mounting hole 11 passes through the first shaft 1 along the axial direction of the first shaft 1. One end of the second shaft 2 (specifically Figure 1 The right end of the first mounting hole 11 extends into the first mounting hole 11, and the first shaft 1 and the second shaft 2 are specifically connected by a key drive, and the key is set between the inner wall of the first mounting hole 11 and the outer wall of the second shaft 2. The key can accurately and efficiently realize torque transmission, so that the first shaft 1 and the second shaft 2 operate synchronously. The key can specifically be a flat key, a semicircular key, a wedge key or a spline. According to the force and transmission requirements, a single key, a double key or multiple keys can be set. A single key is used for ordinary transmission with small force and general coaxiality requirements; the two keys in the double key are symmetrically distributed at 180°, which can balance the force, share the torque, and is suitable for medium loads. The keys in the multiple keys are distributed along the circumference, the contact area is large, and each tooth is evenly stressed, which can meet the transmission requirements of high precision and high torque.

[0060] From a mechanical perspective, the key efficiently transmits torque, enabling synchronous rotation of the first and second shafts 1 and 2, maintaining stable operation of the mechanical system. From a production and processing perspective, the key's processing technology is mature and efficient. From an assembly perspective, keys such as flat and woodruff keys are easy to install and remove, allowing for quick replacement during maintenance, reducing equipment downtime. Furthermore, splines offer high centering accuracy and smooth transmission, significantly reducing vibration and noise, extending equipment life, and improving overall transmission efficiency. The key connection between the first and second shafts 1 and 2 ensures more reliable torque transmission.

[0061] The locking assembly 3 primarily serves to axially limit the first and second shafts 1 and 2, preventing them from shifting in the axial direction X during operation, which could cause the drive connection between the first and second shafts 1 and 2 to fail or become unstable. The locking assembly 3 has two functions: axially securing the first and second shafts 1 and 2 through the fastener 32 and gland 31, and preventing the fastener 32 from loosening through the anti-loosening assembly 33. Specifically, the fastener 32 can be a bolt, providing a reliable connection and convenient assembly and disassembly.

[0062] There are many ways to implement the anti-loosening component 33, such as using a mechanical structure to achieve anti-loosening, or by combining a mechanical structure with an electronic component to achieve anti-loosening.

[0063] The above technical solution realizes the drive connection, axial fixed connection and anti-loosening of the first shaft 1 and the second shaft 2. The connection between the first shaft 1 and the second shaft 2 is more reliable. Even if the application scenario working conditions are relatively complex and harsh, and the vibration is large, the first shaft 1 and the second shaft 2 can still be reliably connected.

[0064] See also Figures 1 to 9 , especially Figures 1 to 3 In some embodiments, the first mounting hole 11 includes a first hole section 111 and a second hole section 112 that are connected; the inner diameter of the first hole section 111 is larger than the inner diameter of the second hole section 112; one end of the second shaft 2 is installed in the second hole section 112.

[0065] The first hole section 111 and the second hole section 112 can both be round holes, and the central axes of the first hole section 111 and the second hole section 112 coincide with each other, which facilitates processing and installation positioning.

[0066] The first mounting hole 11 is a stepped hole. The stepped hole provides space for the installation of the locking assembly 3, allowing the locking assembly 3 to be better positioned and supported, and the fit between the fastener 32 and the connecting component (specifically the second shaft 2) to be tighter, thereby enhancing the stability of the connection and reducing the possibility of loosening and relative displacement. This ensures that when the equipment is operating at high load, the first shaft 1 and the second shaft 2 remain in a good connection state, allowing the equipment to operate normally. The stepped hole has a strong load-bearing capacity and can withstand greater axial and radial forces. Compared to a through hole with a constant inner diameter, the stepped hole distributes force more evenly when transmitting torque and bearing loads, reducing stress concentration, thereby improving the load-bearing capacity of the connection part and being suitable for applications with high strength and reliability requirements. In addition, the stepped hole also facilitates the installation and removal of the locking assembly 3. Taking the fastener 32 as an example, the stepped hole provides a space for the head of the fastener 32, so that the head of the fastener 32 can be flush with the mounting surface or sunk into the hole after installation, preventing the head of the fastener 32 from protruding and affecting the installation of other components or causing interference. At the same time, it is more convenient to use operating tools during disassembly, thereby improving the efficiency of maintenance and repair.

[0067] See also Figures 1 to 9 , especially Figure 6 In some embodiments, the pressure cover 31 includes a cover body 311, a flange 312, and a protrusion 313. A portion of the cover body 311 is located in the first hole section 111, and the rest of the cover body 311 is located in the second hole section 112; the cover body 311 includes a receiving groove 311a. The flange 312 is mounted on the outer periphery of the cover body 311, or the flange 312 and the cover body 311 are integral. The flange 312 is located in the first hole section 111. The protrusion 313 is located on the bottom wall of the receiving groove 311a of the cover body 311, and the protrusion 313 and the cover body 311 are fixedly connected or integral. The pressure cover 31 is provided with a second mounting hole 311d, which passes through the protrusion 313 and the bottom of the receiving groove 311a. Part of the fastener 32 is located in the receiving groove 311a and the second mounting hole 311d, and the rest of the fastener 32 is located inside the second shaft 2.

[0068] The cover body 311 is an annular component, and most of the pressure cover 31 is located in the second hole section 112. The outer wall of the pressure cover 31 is provided with a flange 312, and the flange 312 is located on the outer wall of one end of the cover body 311. The flange 312 is located in the first hole section 111 of the first shaft 1. The flange 312 and the cover body 311 are specifically integrated, which can make processing and manufacturing easier on the one hand, and enhance the overall strength on the other hand: the flange 312 is integrally connected to the cover body 311, and there is no connection gap or weak connection point between the two, which can withstand greater external forces. And the external force can be transmitted more evenly throughout the structure, and there will be no structural damage caused by loosening or breaking of the connection parts. In addition, the integrated connection can also reduce vibration and displacement, so that the bearing performance of the pressure cover 31 is better.

[0069] Protrusion 313 is located within the receiving groove 311a of the cover 311 and is fixed to the bottom of the groove 311a. Protrusion 313 and cover 311 can be integral. This integral connection between protrusion 313 and receiving groove 311a eliminates any gaps or stress concentration points caused by the connection, thus improving the load-bearing performance of the gland 31. It should be noted that protrusion 313 and cover 311 can also be fixedly connected.

[0070] The cover body 311, the protrusion 313 and the flange 312 are integrated, which not only facilitates processing and manufacturing, but also makes the pressure cover 31 an integral whole, without the need to install or disassemble the protrusion 313 and the flange 312, and has good load-bearing performance.

[0071] See also Figures 1 to 9 , especially Figure 9 In some embodiments, the fastener 32 is a bolt, including a bolt head 321 and a screw rod 322. The screw rod 322 is integral with the bolt head 321. The bolt head 321 is located in the receiving groove 311a. The end of the screw rod 322 facing the bolt head 321 is located in the second mounting hole 311d. The other end of the screw rod 322, away from the bolt head 321, is located outside the gland 31 and screwed into the interior of the second shaft 2 to form a threaded connection.

[0072] See also Figures 1 to 9 , especially Figure 1 The second shaft 2 is provided with a screw hole 20 at one end thereof located in the first mounting hole 11 of the first shaft 1, and the screw rod 322 of the fastener 32 passes through the second mounting hole 311d and is installed in the screw hole 20. Figure 2The bolt head 321 engages the protrusion 313 of the gland 31 and is located in the receiving groove 311a. The flange 312 of the gland 31 engages the transition between the first hole section 111 and the second hole section 112 of the first mounting hole 11, that is, the step of the first mounting hole 11. This secures the axial connection between the first shaft 1, gland 31, and second shaft 2 via the fastener 32. As long as the fastener 32 remains fixed, the axial secure connection between the first shaft 1, gland 31, and second shaft 2 remains secure.

[0073] In other embodiments, a pin or other connection method may be used to achieve an axial fixed connection between the first shaft 1 and the second shaft 2 .

[0074] The fastener 32 employed in the above technical solution is easy to install and remove, requiring no complex equipment and enabling convenient operation. Furthermore, the fastener 32 is reusable and, as long as it remains intact after removal, can be reused for the same or another connection, further reducing costs. Furthermore, the connection is highly flexible, allowing for easy installation and removal, resulting in a highly reliable connection. The anti-loosening assembly 33 prevents the fastener 32 from reversing and loosening, creating a self-locking mechanism and further enhancing connection reliability.

[0075] See also Figures 1 to 9 , especially Figure 4 、 Figure 7 and Figure 9 The anti-loosening component 33 is used to prevent the fastener 32 from loosening. The specific implementation method is as follows:

[0076] In some embodiments, the anti-loosening assembly 33 includes a locking block 331 and an elastic member 332. The locking block 331 includes a third mounting hole 331a. The locking block 331 is located within the receiving groove 311a and is sleeved onto the outside of the protrusion 313 through the third mounting hole 331a. The locking block 331 is located between the bolt head 321 and the bottom of the receiving groove 311a. The end surface of the locking block 331 facing the bolt head 321 is provided with first locking teeth 331d, and the end surface of the bolt head 321 facing the locking block 331 is provided with second locking teeth 32a. The first locking teeth 331d and the second locking teeth 32a can be arranged in a circle. The closer the first locking teeth 331d and the second locking teeth 32a are arranged, the easier it is to align and engage, similar to a threaded engagement. The elastic member 332 is located between the locking block 331 and the bottom wall of the receiving groove 311a. The elastic member 332 can be a spring, for example. The locking assembly 3 includes a locked state. When the locking assembly 3 is in the locked state, the fastener 32 securely connects the first shaft 1 and the second shaft 2, and the first locking tooth 331d of the locking block 331 engages with the second locking tooth 32a of the fastener 32 to prevent the fastener 32 from reversing. It should be noted that even if the first locking tooth 331d of the locking block 331 and the second locking tooth 32a of the fastener 32 are not aligned during installation, the fastener 32 may wobble slightly during operation of the air conditioner, which may cause the first locking tooth 331d of the locking block 331 to engage with the second locking tooth 32a of the fastener 32.

[0077] Continue to see Figures 1 to 9 , especially Figure 4 In some embodiments, a first mounting groove 331b is provided on the side of the locking block 331 facing the bottom of the accommodating groove 311a, and a second mounting groove 311b is provided at the bottom of the accommodating groove 311a. One end of the elastic member 332 is located in the first mounting groove 331b, and the other end of the elastic member 332 is located in the second mounting groove 311b. The depth of the first mounting groove 331b and the second mounting groove 311b are both relatively shallow, so that the two ends of the elastic member 332 can be fixed. The first mounting groove 331b and the second mounting groove 311b can fix the position of the elastic member 332 so that the elastic member 332 does not shake freely within the accommodating groove 311a. It should be noted that in order to illustrate the positions of the first mounting groove 331b and the second mounting groove 311b, and how the elastic member 332 is installed in the first mounting groove 331b and the second mounting groove 311b, the depths of the first mounting groove 331b and the second mounting groove 311b are drawn relatively deep in the drawings herein. In actual applications, the depths of the two can be shallower.

[0078] See also Figures 1 to 9 , especially Figure 9In some embodiments, the number of elastic members 332 is multiple, and the multiple groups of elastic members 332 are arranged at intervals along the circumference of the fastener 32. The use of multiple elastic members 332 to dispersely support the locking block 331 provides the locking block 331 with more support points, a larger support area, and a more stable support.

[0079] See also Figures 1 to 9 , especially Figure 3 、 Figure 4 、 Figure 6 , H is greater than the sum of A and B. Wherein, H is the height of the protrusion 313 along the axial direction of the first axis 1, see Figure 6 A is the minimum length of the elastic member 332, see Figure 3 B is the height of the locking block 331 along the axial direction of the first axis 1, see Figure 3 Here, the depths of the first mounting groove 331b and the second mounting groove 311b are negligible. The height of the protrusion 313 meets the above-mentioned dimensional requirements because when unlocking, the locking block 331 needs to move away from the bolt head 321. The above-mentioned dimensions provide space for the locking block 331 to move when unlocking.

[0080] See also Figures 1 to 9 , especially Figure 2 When the anti-loosening assembly 33 is in the original state, the fastener 32 has not been installed in place, and the locking block 331 is supported by the elastic member 332. There is a gap between the bolt head 321 of the fastener 32 and the locking block 331, and the two are separated.

[0081] See also Figures 1 to 9 , especially Figure 3 In some embodiments, when the locking assembly 3 is in the locking state, a first gap P1 exists between the locking block 331 and the bottom of the accommodating groove 311 a.

[0082] Furthermore, when the anti-loosening assembly 33 is in the locked state, the fastener 32 is screwed into place, the locking block 331 is still held by the elastic member 332, and the first locking teeth 331d of the locking block 331 engage with the second locking teeth 32a of the fastener 32. The first locking teeth 331d and the second locking teeth 32a prevent the fastener 32 from being reversed due to the action of the first locking teeth 331d and the second locking teeth 32a, so the fastener 32 will not loosen, and the connection is highly reliable.

[0083] See also Figures 1 to 9 , especially Figure 4In some embodiments, the locking assembly 3 also includes an unlocked state. When the locking assembly 3 is in the unlocked state, the locking block 331 is separated from the bolt head 321 of the fastener 32 by an external force, and a second gap P2 is defined between the locking block 331 and the bottom surface of the bolt head 321 of the fastener 32. Due to the presence of the second gap P2, the first locking tooth 331d and the second locking tooth 32a are disengaged, and the fastener 32 is no longer locked, allowing the fastener 32 to rotate in the opposite direction under the action of an external force.

[0084] Furthermore, when the anti-loosening assembly 33 is in the unlocked state, the locking block 331 is first pushed in the axial direction of the first shaft 1, causing the locking block 331 to overcome the elastic force of the elastic member 332 and move a certain distance away from the bolt head 321 of the fastener 32. The second locking teeth 32a of the fastener 32 disengage from the first locking teeth 331d of the locking block 331, and the fastener 32 can then be reversed and removed. When the first and second shafts 1 and 2 need to be separated, this method allows for rapid and efficient disassembly.

[0085] See also Figures 1 to 9 , especially Figure 6 and Figure 7 In some embodiments, a guide groove 311c is provided on the groove wall of the accommodating groove 311a, and a guide block 331c is provided on the edge of the locking block 331, and the guide block 331c is installed in the guide groove 311c.

[0086] The cooperation between the guide groove 311c and the guide block 331c can achieve high-precision positioning, so that the locking block 331 can move in a straight line but cannot rotate. The guide groove 311c can provide a precise movement path for the guide block 331c, so that the locking block 331 always maintains an accurate position during the movement of the accommodating groove 311a of the pressure cover 31. In addition, the cooperation between the guide groove 311c and the guide block 331c can achieve a smooth installation of the locking block 331, effectively reducing the shaking and deviation of the locking block 331 during the installation process. The side wall of the guide groove 311c can impose lateral constraints on the guide block 331c, so that the locking block 331 is more stable during linear motion. In actual use, even in an environment where there are external interference factors such as vibration, impact, etc., the locking block 331 is not easy to rotate relative to the pressure cover 31, thereby improving the reliability of the dynamic shaft connection assembly.

[0087] In some embodiments, there are multiple guide slots 311c and multiple guide blocks 331c, specifically an even number. The guide blocks 331c are symmetrically arranged with respect to the axis of the third mounting hole 331a of the locking block 331 to ensure dynamic balance between the first shaft 1 and the second shaft 2. The guide slots 311c and guide blocks 331c are arranged in a one-to-one correspondence. The number of guide blocks 331c and guide slots 311c can be, for example, 2 to 6, which satisfies both installation and guidance requirements and facilitates installation of the locking block 331.

[0088] An embodiment of the present utility model further provides an air conditioner, comprising the dynamic shaft connection assembly provided by any technical solution of the present utility model.

[0089] The air conditioner provided by the embodiment of the present invention includes the dynamic shaft connection assembly provided by any technical solution of the present invention, and therefore has the advantages described above.

[0090] In some embodiments, the first shaft 1 is a motor shaft, the second shaft 2 is a compressor rotor shaft, and the motor shaft and the compressor rotor shaft are drive-connected via a key connection.

[0091] The air conditioner adopts the above method to realize the connection between the motor shaft and the compressor rotor shaft, the connection is reliable, and the movement of the compressor is safer and smoother.

[0092] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are used solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0093] In the description of the present invention, each technical feature can be combined with other technical features where feasible.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A dynamic shaft connection assembly, characterized in that: include: A first shaft (1) comprising a first mounting hole (11) extending through the first shaft (1) in an axial direction of the first shaft (1); A second shaft (2) is mounted in the first mounting hole (11), and the second shaft (2) is drivingly connected to the first shaft (1), so that the rotation of one of the first shaft (1) and the second shaft (2) drives the other to rotate; as well as A locking assembly (3) is configured to limit the axial relative displacement of the first shaft (1) and the second shaft (2); the locking assembly (3) comprises a pressure cover (31), a fastener (32), and an anti-loosening assembly (33), all of which are located in the first mounting hole (11); the fastener (32) fixedly connects the first shaft (1), the pressure cover (31), and the second shaft (2); and the anti-loosening assembly (33) is configured to prevent the fastener (32) from loosening.

2. The dynamic shaft connection assembly according to claim 1, characterized in that: The first mounting hole (11) comprises a first hole section (111) and a second hole section (112) that are connected; the inner diameter of the first hole section (111) is larger than the inner diameter of the second hole section (112); and one end of the second shaft (2) is mounted in the second hole section (112).

3. The dynamic shaft connection assembly according to claim 2, characterized in that: The gland (31) comprises: a cover body (311), a portion of the cover body (311) is located in the first hole section (111), and the remaining portion of the cover body (311) is located in the second hole section (112); the cover body (311) includes a receiving groove (311a); a flange (312) mounted on the outer periphery of the cover (311), or the flange (312) and the cover (311) are integral; the flange (312) is located in the first hole section (111); and A protrusion (313) is located at the bottom of the receiving groove (311a) of the cover body (311), and the protrusion (313) and the cover body (311) are fixedly connected or are integrated; the pressure cover (31) is provided with a second mounting hole (311d), and the second mounting hole (311d) passes through the protrusion (313) and the bottom of the receiving groove (311a); Part of the fastener (32) is located in the accommodating groove (311a) and the second mounting hole (311d), and the remaining part of the fastener (32) is located inside the second shaft (2).

4. The dynamic shaft connection assembly according to claim 3, characterized in that: The fastener (32) comprises: a bolt head (321) located in the receiving groove (311a); and The screw rod (322) is integral with the bolt head (321); one end of the screw rod (322) facing the bolt head (321) is located in the second mounting hole (311d), and the other end of the screw rod (322) away from the bolt head (321) is located outside the pressure cover (31) and is screwed into the interior of the second shaft (2) to form a threaded connection.

5. The dynamic shaft connection assembly according to claim 4, characterized in that: The anti-loosening component (33) comprises: A locking block (331) comprising a third mounting hole (331a); the locking block (331) is located inside the receiving groove (311a), and the locking block (331) is sleeved on the outside of the protrusion (313) through the third mounting hole (331a); the locking block (331) is located between the bolt head (321) and the bottom of the receiving groove (311a); the end surface of the locking block (331) facing the bolt head (321) is provided with a first locking tooth (331d), and the end surface of the bolt head (321) facing the locking block (331) is provided with a second locking tooth (32a); and an elastic member (332) located between the locking block (331) and the bottom wall of the accommodating groove (311a); The locking assembly (3) includes a locking state. When the locking assembly (3) is in the locking state, the fastener (32) fixedly connects the first shaft (1) and the second shaft (2), and the first locking tooth (331d) of the locking block (331) engages with the second locking tooth (32a) of the fastener (32) to prevent the fastener (32) from reversing.

6. The dynamic shaft connection assembly according to claim 5, characterized in that: When the locking assembly (3) is in a locked state, a first gap exists between the locking block (331) and the bottom of the accommodating groove (311a).

7. The dynamic shaft connection assembly according to claim 5, characterized in that: The locking assembly (3) further includes an unlocked state. When the locking assembly (3) is in the unlocked state, the locking block (331) leaves the bolt head (321) of the fastener (32) under the action of an external force, and a second gap is formed between the locking block (331) and the bolt head (321) of the fastener (32).

8. The dynamic shaft connection assembly according to claim 5, characterized in that: The groove wall of the accommodating groove (311a) is provided with a guide groove (311c), the edge of the locking block (331) is provided with a guide block (331c), and the guide block (331c) is installed in the guide groove (311c).

9. The dynamic shaft connection assembly according to claim 8, characterized in that: There are multiple guide blocks (331c), and each guide block (331c) is symmetrically arranged relative to the axis of the third mounting hole (331a) of the locking block (331).

10. The dynamic shaft connection assembly according to claim 8, characterized in that: There are multiple guide grooves (311c), and there are multiple guide blocks (331c). The guide grooves (311c) and the guide blocks (331c) are arranged in a one-to-one correspondence.

11. The dynamic shaft connection assembly according to claim 5, characterized in that: The locking block (331) is provided with a first mounting groove (331b) on one side of the bottom of the accommodating groove (311a), and the bottom of the accommodating groove (311a) is provided with a second mounting groove (311b); one end of the elastic member (332) is located in the first mounting groove (331b), and the other end of the elastic member (332) is located in the second mounting groove (311b).

12. The dynamic shaft connection assembly according to claim 5, characterized in that: The elastic members (332) are provided in a plurality of groups, and the plurality of groups of elastic members (332) are arranged at intervals along the circumference of the fastener (32).

13. The dynamic shaft connection assembly according to claim 5, characterized in that: H is greater than the sum of A and B; wherein H is the axial height of the protrusion (313) along the first axis (1), A is the minimum length of the elastic member (332), and B is the axial height of the locking block (331) along the first axis (1).

14. An air conditioner, characterized in that: It comprises the dynamic shaft connection assembly according to any one of claims 1 to 13.

15. The air conditioner according to claim 14, characterized in that The first shaft (1) is a motor shaft, the second shaft (2) is a compressor rotor shaft, and the motor shaft and the compressor rotor shaft are drive-connected via a key connection.

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