A six-slot multi-pole permanent magnet staggered embedded rotor structure

Abstract

The present invention provides a six-slot multi-pole permanent magnet staggered embedded rotor structure, which relates to the technical field of energy-saving electric motors. The rotor comprises: a rotor having a central axis hole and six rotationally symmetrically distributed permanent magnet slots, a central rotating shaft disposed in the central axis hole, two permanent magnets disposed in the permanent magnet slots, six rotationally symmetrically distributed isosceles trapezoidal holes disposed in the rotor, a mounting ring disposed on the front side of the rotor, six rotationally symmetrically distributed ear blocks integrally formed on the mounting ring, isosceles trapezoidal plug rods mounted on the ear blocks, and the isosceles trapezoidal plug rods extending from one end of the ear block to the corresponding isosceles trapezoidal holes. The six-slot multi-pole permanent magnet staggered embedded rotor structure provided by the present invention has the advantages of convenient maintenance and replacement of permanent magnets, simple and time-saving operation, effective prevention of axial movement of the central rotating shaft, and flexible use.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving motors, and in particular to a six-slot multi-pole permanent magnet staggered embedded rotor structure. Background Art

[0002] Embedded permanent magnet synchronous motors (EMSMs) are widely used in electric vehicle drive systems due to their high efficiency and power density, meeting the power performance and range requirements of electric vehicles. The permanent magnets in the rotor of an EPMSM are fixed in a specific pattern within the rotor's permanent magnet slots. This structure effectively protects the permanent magnets, making them less susceptible to environmental influences. Furthermore, by designing the shape and position of the permanent magnets, the motor's magnetic field distribution can be optimized, improving motor performance.

[0003] Currently, permanent magnets in embedded permanent magnet rotors are mostly fixed by bonding with adhesives or by compressing with clamping blocks and bolts. Although this method can reliably fix the permanent magnets in the permanent magnet slots, once the motor fails and the permanent magnets need to be repaired or replaced, the removal and reinstallation of the permanent magnets will cause great inconvenience.

[0004] Therefore, it is necessary to provide a six-slot multi-pole permanent magnet staggered embedded rotor structure to solve the above technical problems. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a flexible six-slot multi-pole permanent magnet staggered embedded rotor structure that is convenient for maintenance and replacement of permanent magnets, simple to operate and time-saving, can effectively prevent axial movement of the central shaft.

[0006] In order to solve the above technical problems, the present invention provides a six-slot multi-pole permanent magnet staggered embedded rotor structure, including: a rotor, a central axis hole and six permanent magnet slots with rotational symmetry are opened in the rotor, a central rotating shaft is provided in the central axis hole, two permanent magnets are provided in the permanent magnet slots, six isosceles trapezoidal holes with rotational symmetry are further opened in the rotor, a mounting ring is provided on the front side of the rotor, six ear blocks with rotational symmetry are integrally formed on the mounting ring, an isosceles trapezoidal plug rod is installed on the ear block, the isosceles trapezoidal plug rod extends from one end of the ear block to the corresponding isosceles trapezoidal hole, and a first square groove is opened on both inner waist surfaces of the isosceles trapezoidal hole, and a plurality of a circular clamping rod, wherein one end of each of the circular clamping rods away from the central rotating shaft extends into the corresponding permanent magnet slot and contacts the corresponding permanent magnet; a first set of plates located in the first square slot is fixedly sleeved on the outer wall of the circular clamping rod; a first return spring located in the first square slot is sleeved on the outer wall of the circular clamping rod; one end of the first return spring contacts the first set of plates, and the other end contacts the inner wall of the first square slot relative to the isosceles trapezoidal plug-in rod; the end of the circular clamping rod located in the first square slot contacts the waist surface of the isosceles trapezoidal plug-in rod, and the connection between the end surface of the end of the isosceles trapezoidal plug-in rod away from the ear block and the adjacent outer wall is a rounded design;

[0007] Two fixing blocks are fixedly installed on the front side of the rotor, and a first round plug rod is passed through and slidably installed on the two fixing blocks, and the ends of the two first round plug rods close to each other are fixedly installed with a first end plate, and the two first round plug rods are sleeved with a first retaining spring, and the ends of the two first retaining springs close to each other are fixedly connected to the corresponding first end plate, and the ends of the two first retaining springs away from each other are fixedly connected to the corresponding fixed blocks, and two first round sockets are provided in the mounting ring, and the ends of the two first round plug rods away from each other extend into the corresponding first round sockets.

[0008] Preferably, a plurality of arc-shaped anti-slip grooves distributed in rotational symmetry are provided on the outer ring of the mounting ring.

[0009] Preferably, a rotatable ferrule is rotatably sleeved on the outer walls of the two mounting rings, a hand lever is integrally formed on the outer wall of the rotatable ferrule, and two stoppers are fixedly mounted on the front side of the rotor.

[0010] Preferably, a second square groove is provided on the inner wall of one side of the multiple isosceles trapezoidal holes close to the central rotating shaft, a square baffle is slidably installed on the inner wall of the second square groove close to the central rotating shaft, a second set of plates located in the second square groove is fixedly sleeved on the square baffle, a second return spring located in the second square groove is sleeved on the square baffle, one end of the second return spring contacts the second set of plates, and the other end contacts the inner wall of the second square groove relative to the side of the isosceles trapezoidal insertion rod, an annular groove is provided on the outer wall of the central rotating shaft, and the ends of the multiple square baffles close to each other extend into the annular groove, and the end of the square baffle located in the second square groove contacts the outer wall of the isosceles trapezoidal insertion rod close to the central rotating shaft.

[0011] Preferably, a hemispherical block is integrally formed on one end of the square blocking rod away from the central rotating shaft, and the hemispherical block contacts an outer wall of the isosceles trapezoidal insertion rod on one side close to the central rotating shaft.

[0012] Preferably, the isosceles trapezoidal insertion rod includes an upper insertion rod and a lower insertion rod, the lower insertion rod is slidably mounted on the bottom of the upper insertion rod, the upper insertion rod is fixedly mounted on the ear block, the ear block is provided with an avoidance opening, the lower insertion rod is located in the avoidance opening, and the ear block is provided with a locking mechanism for locking the lower insertion rod.

[0013] Preferably, the locking mechanism includes two second round insertion rods, two second end blocks, two driving arms and two second retaining springs, the two second round insertion rods are respectively slidably mounted on the inner walls on both sides of the avoidance opening, and the outer walls on both sides of the lower insertion rod are provided with a second round insertion hole located in the avoidance opening, the ends of the two second round insertion rods close to each other extend into the corresponding second round insertion holes, the two second end blocks are respectively arranged on both sides of the ear block, and the ends of the two second round insertion rods away from each other extend to both sides of the ear block and are fixedly connected to the corresponding second end blocks, the two driving arms are respectively fixedly mounted on the outer rings of the two second end blocks, the two second retaining springs are respectively sleeved on the two second round insertion rods, the ends of the two second retaining springs close to each other are fixedly connected to the ear blocks, and the ends of the two second retaining springs away from each other are fixedly connected to the corresponding second end blocks.

[0014] Preferably, the locking mechanism further includes two push rods and two finger plates, both of the push rods are passed through and slidably mounted on the ear block, one end of the two push rods are fixedly connected to the corresponding driving arm, and the other end of the two push rods are fixedly connected to the corresponding finger plates.

[0015] Preferably, a hand-gripping groove is provided at the bottom of the lower insertion rod, and a finger hole connected to the avoidance opening is provided on the ear block.

[0016] Preferably, a positioning groove communicating with the avoidance opening is provided on the ear block, and a positioning block is provided on the lower insertion rod. The positioning block is located in the positioning groove and contacts the inner wall of the positioning groove on one side close to the rotor.

[0017] Compared with related technologies, the six-slot multi-pole permanent magnet staggered embedded rotor structure provided by the present invention has the following beneficial effects:

[0018] The present invention provides a six-slot multi-pole permanent magnet staggered embedded rotor structure. Through the arrangement of the isosceles trapezoidal hole, the mounting ring, the ear block, the isosceles trapezoidal plugging rod, the circular holding rod, the first set of plates, the first return spring and other components, in the process of inserting the isosceles trapezoidal plugging rod into the isosceles trapezoidal hole, the multiple circular holding rods can be automatically moved into the permanent magnet slot in sequence, and finally the permanent magnet is tightly fixed. Through the arrangement of the fixing block, the first circular plugging rod, the first end plate, the first holding spring, the rotatable ring, the hand lever and other components, after the isosceles trapezoidal plugging rod is inserted, the mounting ring for mounting the isosceles trapezoidal plugging rod can be reliably locked to prevent the isosceles trapezoidal plugging rod from moving at will. When the permanent magnet needs to be repaired or replaced, the locking of the mounting ring can be released by a simple operation, and then the multiple isosceles trapezoidal plugging rods can be pulled out through the mounting ring, so that the circular holding rod and the permanent magnet are automatically separated, which greatly facilitates the inspection and replacement of the permanent magnet, and has the advantages of simple operation and time saving.

[0019] The present invention provides a six-slot multi-pole permanent magnet staggered embedded rotor structure. By arranging components such as square retaining bars, a second set of plates, and a second return spring, and by providing an annular groove on a central rotating shaft, multiple square retaining bars can be moved and inserted into the annular groove during the insertion of an isosceles trapezoidal inserting bar. This allows users to simultaneously secure the permanent magnets and restrict the central rotating shaft, thereby preventing axial movement of the central rotating shaft.

[0020] The present invention provides a six-slot multi-pole permanent magnet staggered embedded rotor structure. By arranging an isosceles trapezoidal insertion rod composed of an upper insertion rod and a lower insertion rod, the lower insertion rod can be separated from the upper insertion rod, and a locking mechanism is arranged on the ear block to lock the lower insertion rod. In the case of assembling the permanent magnet first and then the central rotating shaft, the upper insertion rod can be first inserted into the isosceles trapezoidal hole to complete the fixation of the permanent magnet. After the assembly of the central rotating shaft is completed, the lower insertion rod is inserted into the isosceles trapezoidal hole and locked by the locking mechanism, thereby realizing axial limitation of the central rotating shaft. In the case of assembling the central rotating shaft first and then the permanent magnet, the lower insertion rod and the upper insertion rod can be combined together and locked, and then inserted into the isosceles trapezoidal hole together, thereby realizing both the fixation of the permanent magnet and the axial limitation of the central rotating shaft, thereby having the advantage of flexible use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of the first embodiment of the six-slot multi-pole permanent magnet staggered embedded rotor structure provided by the present invention;

[0022] Figure 2 for Figure 1 The exploded diagram of the six-slot multi-pole permanent magnet staggered embedded rotor structure shown;

[0023] Figure 3 for Figure 1 A front cross-sectional view of a six-slot multi-pole permanent magnet staggered embedded rotor structure is shown;

[0024] Figure 4 for Figure 3 An enlarged schematic diagram of section A is shown;

[0025] Figure 5 for Figure 2 A schematic diagram of the connection structure of multiple isosceles trapezoidal rods and a mounting ring is shown;

[0026] Figure 6 for Figure 2 A schematic structural diagram of the rotor;

[0027] Figure 7 for Figure 6 An enlarged schematic diagram of portion B is shown;

[0028] Figure 8 for Figure 3 The structural diagram of the circular abutting rod shown;

[0029] Figure 9 for Figure 3 A schematic diagram of the cooperation between the plurality of circular abutting rods and the plurality of isosceles trapezoidal insertion rods is shown;

[0030] Figure 10A front cross-sectional view of a second embodiment of the six-slot multi-pole permanent magnet staggered embedded rotor structure provided by the present invention;

[0031] Figure 11 for Figure 10 An enlarged schematic diagram of section C is shown;

[0032] Figure 12 for Figure 10 The structural diagram of the central shaft shown;

[0033] Figure 13 for Figure 10 A schematic diagram of the coordination of multiple central rotating shafts, multiple square blocking rods, and multiple isosceles trapezoidal plug rods is shown;

[0034] Figure 14 for Figure 10 The schematic structural diagram of the square baffle shown;

[0035] Figure 15 A schematic structural diagram of a third embodiment of a six-slot multi-pole permanent magnet staggered embedded rotor structure provided by the present invention;

[0036] Figure 16 for Figure 15 An enlarged schematic diagram of portion D is shown;

[0037] Figure 17 for Figure 15 Schematic diagram of the connection structure of multiple isosceles trapezoidal rods and mounting rings in a six-slot multi-pole permanent magnet staggered embedded rotor structure shown;

[0038] Figure 18 for Figure 17 The structural diagram of the isosceles trapezoidal rod shown;

[0039] Figure 19 for Figure 18 An exploded schematic diagram of an isosceles trapezoidal plunger is shown;

[0040] Figure 20 for Figure 19 The structural diagram of the lower insertion rod shown;

[0041] Figure 21 for Figure 15 A schematic structural diagram of the mounting ring shown;

[0042] Figure 22 for Figure 21 An enlarged schematic diagram of section E is shown;

[0043] Figure 23 for Figure 21 The structural diagram of the locking mechanism is shown.

[0044] Numbers in the figure: 1, rotor; 101, permanent magnet slot; 102, center axis hole; 103, isosceles trapezoidal hole; 1031, first square slot; 1032, second square slot; 2, permanent magnet; 3, center shaft; 301, annular slot; 4, mounting ring; 401, first circular jack; 5, ear block; 501, avoidance port; 502, finger hole; 6, isosceles trapezoidal plug rod; 61, upper plug rod; 62, lower plug rod; 621, positioning block; 6201, second circular jack; 6202, hand-gripping slot; 7 , round abutting rod; 8, first set of plates; 9, first return spring; 10, first limiting strip; 11, fixing block; 12, first round plug rod; 13, first end plate; 14, first retaining spring; 15, rotatable ring; 16, hand lever; 17, block; 18, square block; 19, second set of plates; 20, second return spring; 21, second limiting strip; 22, second round plug rod; 23, second end block; 24, driving arm; 25, second retaining spring; 26, push rod; 27, fingerboard. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0046] First embodiment

[0047] Please refer to Figures 1-9In the first embodiment of the present invention, a six-slot multi-pole permanent magnet staggered embedded rotor structure includes: a rotor 1, a central axis hole 102 and six rotationally symmetrically distributed permanent magnet slots 101 are provided in the rotor 1, a central shaft hole 102 is provided in the central axis hole 102, two permanent magnet slots 101 are provided with two permanent magnets 2, and two adjacent permanent magnets 2 are staggered at a certain angle in the circumferential direction, six rotationally symmetrically distributed isosceles trapezoidal holes 103 are further provided in the rotor 1, a mounting ring 4 is provided on the front side of the rotor 1, six rotationally symmetrically distributed ear blocks 5 are integrally formed on the mounting ring 4, and isosceles trapezoidal plug rods 6 are installed on the ear blocks 5, etc. The end of the waist trapezoidal insertion rod 6 away from the ear block 5 extends to the corresponding isosceles trapezoidal hole 103, and a first square groove 1031 is provided on the two inner waist surfaces of the isosceles trapezoidal hole 103. A plurality of circular clamping rods 7 are slidably installed on the inner wall of one side of the first square groove 1031 relative to the isosceles trapezoidal insertion rod 6. The circular clamping rod 7 is perpendicular to the waist surface of the corresponding isosceles trapezoidal insertion rod 6. The ends of the plurality of circular clamping rods 7 away from the central rotation axis 3 extend into the corresponding permanent magnet groove 101 and are in contact with the corresponding permanent magnet 2. The permanent magnet 2 is clamped and fixed by the plurality of circular clamping rods 7. A fixed sleeve is provided on the outer wall of the circular clamping rod 7. The first set of plates 8 in the square groove 1031, the outer wall of the circular clamping rod 7 is sleeved with a first return spring 9 located in the first square groove 1031, one end of the first return spring 9 is in contact with the first set of plates 8, and the other end is in contact with the inner wall of one side of the first square groove 1031 relative to the isosceles trapezoidal plug 6, and the end of the circular clamping rod 7 located in the first square groove 1031 is in contact with the waist surface of the isosceles trapezoidal plug 6. A first limiting strip 10 is fixedly installed on the inner wall of one side of the first square groove 1031. After the isosceles trapezoidal plug 6 is pulled out, the circular clamping rod will be pulled out under the elastic force of the first return spring 9 due to the loss of the resistance of the isosceles trapezoidal plug 6. 7 moves in the direction of the central rotating shaft 3 until the first set of plates 8 conflicts with the first limit strip 10, and the connection between the end face of the end of the isosceles trapezoidal plug-in rod 6 away from the ear block 5 and the adjacent outer wall is a rounded design, and the connection between the end face of the end of the circular clamping rod 7 close to the central rotating shaft 3 and the outer peripheral wall is also a rounded design. Through the above arrangement, when the end of the isosceles trapezoidal plug-in rod 6 away from the ear block 5 conflicts with the circular clamping rod 7, the circular clamping rod 7 will be moved in the direction away from the isosceles trapezoidal plug-in rod 6, so that the end of the circular clamping rod 7 away from the central rotating shaft 3 enters the corresponding permanent magnet slot 101, and the corresponding permanent magnet 2 is pressed and fixed;

[0048] In order to lock the mounting ring 4, two fixing blocks 11 are fixedly installed on the front side of the rotor 1, and a first round plug rod 12 is penetrated and slidably installed on the two fixing blocks 11, and the ends of the two first round plug rods 12 close to each other are fixedly installed with a first end plate 13, and the two first round plug rods 12 are sleeved with a first retaining spring 14, and the ends of the two first retaining springs 14 close to each other are fixedly connected to the corresponding first end plate 13, and the ends of the two first retaining springs 14 away from each other are fixedly connected to the corresponding fixing block 11. Two first round insertion holes 401 are provided in the mounting ring 4, and the ends of the two first round plug rods 12 away from each other extend into the corresponding first round insertion holes 401. Under the restriction of the two first retaining springs 14, the ends of the two first round plug rods 12 away from each other are always located in the corresponding first round insertion holes 401, thereby preventing the mounting ring 4 from moving forward and backward, and then enabling multiple isosceles trapezoidal plug rods 6 to always be located in the corresponding isosceles trapezoidal holes 103.

[0049] In this embodiment, in order to facilitate the pulling of the mounting ring 4 , a plurality of arc-shaped anti-slip grooves distributed in rotational symmetry are provided on the outer ring of the mounting ring 4 .

[0050] In this embodiment, after the first round insertion rod 12 is pulled out from the first round insertion hole 401, in order to prevent it from automatically resetting, a rotatable ring 15 is rotatably sleeved on the outer wall of the two mounting rings 4, and a hand lever 16 is integrally formed on the outer wall of the rotatable ring 15. Two blocks 17 are fixedly installed on the front side of the rotor 1. By holding the hand lever 16 and pulling the first round insertion rod 12 in the direction of the central rotation axis 3, the first round insertion rod 12 can be withdrawn from the first round insertion hole 401, and then the hand lever 16 is rotated a certain angle so that it is located on the side of the block 17 close to the central rotation axis 3. In this way, the block 17 will block the hand lever 16 and prevent the first round insertion rod 12 from automatically resetting under the action of the first retaining spring 14.

[0051] In this embodiment:

[0052] When in use, first install the permanent magnet 2 into the permanent magnet slot 101. After the permanent magnet 2 is installed, first pull the two first round rods 12 in the direction of the central axis hole 102. After the hand rod 16 passes the corresponding stopper 17, the hand rod 16 is rotated a certain degree so that it is located between the stopper 17 and the central axis hole 102. During the above process, the first holding spring 14 will be stretched. After releasing the hand rod 16, under the action of the first holding spring 14, the first round rod 12 will perform a reset movement, and the stopper 17 will block the hand rod 16, thereby preventing the first round rod 12 from being completely reset. In this way, the maximum distance between the two first round rods 12 will be smaller than the inner diameter of the mounting ring 4, and will not constitute an obstruction to the mounting ring 4;

[0053] After completing the above-mentioned pre-installation operation, hold the mounting ring 4 and insert the six isosceles trapezoidal rods 6 into the six isosceles trapezoidal holes 103 respectively (the position of the first round hole 401 should be kept corresponding to the first round rod 12 during insertion), and then push the mounting ring 4 until it fits with the rotor 1. In the process of the isosceles trapezoidal rod 6 entering the isosceles trapezoidal hole 103, the end face of the end away from the ear block 5 and the rounded surface between the two waist surfaces will successively contact multiple circular tightening rods 7, so that the circular tightening rods 7 and the isosceles trapezoidal rods are in contact with each other. 6, one end in contact gradually and completely enters the first square groove 1031, and the other end of the circular pressing rod 7 enters the corresponding permanent magnet groove 101 and presses the permanent magnet 2 tightly. During the above process, the first set of plates 8 will separate from the first limit bar 10, and the first return spring 9 will be compressed. After the mounting ring 4 is fitted with the rotor, all the isosceles trapezoidal insertion rods 6 are inserted into place, and all the circular pressing rods 7 in each first square groove 1031 complete the pressing action. Under the action of multiple circular pressing rods 7, the permanent magnet 2 is reliably fixed;

[0054] After completing the above-mentioned fixing work of the permanent magnet 2, the two hand levers 16 are rotated away from the corresponding blocks 17 in sequence. After the blockage of the blocks 17 is lost, the first round insertion rod 12 will perform a reset movement under the tension of the first retaining spring 14, and automatically insert into the first round insertion hole 401, thereby locking the mounting ring 4 and ensuring that the multiple isosceles trapezoidal insertion rods 6 will not move at will;

[0055] When the permanent magnet 2 needs to be inspected or replaced later, after releasing the lock of the two first round insertion rods 12 on the mounting ring 4 in accordance with the above-mentioned operation method, the mounting ring 4 can be held and pulled outward to pull out the multiple isosceles trapezoidal insertion rods 6. After losing the interference of the isosceles trapezoidal insertion rods 6, under the elastic force of the first return spring 9, the circular clamping rod 7 will move toward the direction of the corresponding isosceles trapezoidal hole 103, thereby separating from the permanent magnet 2, and then the permanent magnets 2 can be pushed out one by one and inspected.

[0056] Compared with related technologies, the six-slot multi-pole permanent magnet staggered embedded rotor structure provided by the present invention has the following beneficial effects:

[0057] Through the arrangement of the isosceles trapezoidal hole 103, the mounting ring 4, the ear block 5, the isosceles trapezoidal plug rod 6, the circular holding rod 7, the first set of plates 8, the first return spring 9 and other components, in the process of inserting the isosceles trapezoidal plug rod 6 into the isosceles trapezoidal hole 103, the multiple circular holding rods 7 can be automatically moved into the permanent magnet slot 101 in sequence, and finally the permanent magnet 2 is tightly fixed. Through the arrangement of the fixing block 11, the first circular plug rod 12, the first end plate 13, the first holding spring 14, the rotatable ring 15, the hand lever 16 and other components After the isosceles trapezoidal rods 6 are inserted, the mounting ring 4 used to mount the isosceles trapezoidal rods 6 can be reliably locked to prevent the isosceles trapezoidal rods 6 from moving at will. When the permanent magnet 2 needs to be repaired or replaced, the locking of the mounting ring 4 can be released through a simple operation, and then the multiple isosceles trapezoidal rods 6 can be pulled out through the mounting ring 4, so that the circular pressing rod 7 and the permanent magnet 2 can be automatically separated, which greatly facilitates the inspection and replacement of the permanent magnet, and has the advantages of simple operation and time saving.

[0058] Second embodiment:

[0059] Based on the six-slot multi-pole permanent magnet staggered embedded rotor structure provided in the first embodiment of this application, the second embodiment of this application proposes another six-slot multi-pole permanent magnet staggered embedded rotor structure. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0060] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and implementation plans.

[0061] Please refer to Figure 10-14In the six-slot multi-pole permanent magnet staggered embedded rotor structure proposed in this embodiment, a second square slot 1032 is further provided on the inner wall of the side of the multiple isosceles trapezoidal holes 103 close to the central rotating shaft 3, and a square baffle 18 is slidably installed on the inner wall of the side of the second square slot 1032 close to the central rotating shaft 3. A second set of plates 19 located in the second square slot 1032 is fixedly sleeved on the square baffle 18, and a second return spring 20 located in the second square slot 1032 is sleeved on the square baffle 18. One end of the second return spring 20 is in contact with the second set of plates 19, and the other end is in contact with the inner wall of the second square slot 1032 relative to the isosceles trapezoidal insertion rod 6. The second A second limit strip 21 is also fixedly installed on the inner wall of one side of the square groove 1032. After losing the interference of the isosceles trapezoidal plug 6, the square baffle 18 will perform a reset movement under the elastic force of the second reset spring 20 until the second set of plates 19 interferes with the second limit strip 21 and stops. An annular groove 301 is provided on the outer wall of the central rotating shaft 3. The ends of the multiple square baffles 18 close to each other extend into the annular groove 301. The central rotating shaft 3 is blocked by the square baffles 18 to prevent the central rotating shaft 3 from axial movement. The end of the square baffle 18 located in the second square groove 1032 contacts the outer wall of the isosceles trapezoidal plug 6 close to the central rotating shaft 3.

[0062] In this embodiment, in order to reduce the contact area between the square baffle 18 and the isosceles trapezoidal insertion rod 6 and reduce the resistance when the isosceles trapezoidal insertion rod 6 is inserted, a hemispherical block is integrally formed at the end of the square baffle 18 away from the central rotation axis 3, and the hemispherical block contacts the outer wall of the isosceles trapezoidal insertion rod 6 on one side close to the central rotation axis 3.

[0063] In this embodiment:

[0064] Since the connection between the end face of the end of the isosceles trapezoidal insertion rod 6 away from the ear block 5 and the outer wall of the side close to the central rotation axis 3 is also a rounded surface, during the process of inserting the isosceles trapezoidal insertion rod 6 into the isosceles trapezoidal hole 103, not only will the circular tightening rod 7 move, but the rounded surface will also contact the square blocking rod 18, causing the square blocking rod 18 to move along the rounded surface in the direction of the central rotation axis 3. When the rounded surface completely passes the square blocking rod 18, the end of the square blocking rod 18 away from the isosceles trapezoidal insertion rod 6 will enter the central rotation axis 3. The annular groove 301 is provided, and the front and rear outer walls of the square blocking rod 18 are in contact with the front and rear inner walls of the annular groove 301 respectively. Under the blocking action of the multiple square blocking rods 18, the central rotating shaft 3 will not move axially relative to the rotor 1 during subsequent use. After the isosceles trapezoidal insertion rod 6 is pulled out, due to the loss of resistance, the square blocking rod 18 will perform a reset movement under the elastic force of the second return spring 20, and its end away from the second set of plates 19 will exit the annular groove 301 and no longer constitute an obstruction to the central rotating shaft 3.

[0065] In this embodiment, the square blocking rods 18, the second set of plates 19, the second return spring 20 and other components are provided, and the annular groove 301 is provided on the central rotating shaft 3. During the insertion of the isosceles trapezoidal insertion rod 6, the multiple square blocking rods 18 can be moved and enter the annular groove 301, so that the user can fix the permanent magnet 2 while also restricting the central rotating shaft 3, thereby preventing the central rotating shaft 3 from axial movement.

[0066] It should be noted that this embodiment is only applicable to the scenario where the central shaft 3 is assembled first and then the permanent magnet 2 is assembled.

[0067] The third embodiment of the present invention will be further described below with reference to the accompanying drawings and implementation plans.

[0068] Based on the six-slot multi-pole permanent magnet staggered embedded rotor structure provided in the second embodiment of this application, the third embodiment of this application proposes another six-slot multi-pole permanent magnet staggered embedded rotor structure. The third embodiment is merely a preferred embodiment of the second embodiment, and implementation of the third embodiment will not affect the independent implementation of the second embodiment.

[0069] Please refer to Figure 15-Figure 23 In the six-slot multi-pole permanent magnet staggered embedded rotor structure proposed in this embodiment, the isosceles trapezoidal plug rod 6 is a combined type, which includes an upper plug rod 61 and a lower plug rod 62. The lower plug rod 62 is slidably installed at the bottom of the upper plug rod 61. Specifically, a T-shaped limit slide is provided at the bottom of the upper plug rod 61, and a T-shaped limit slide is integrally formed on the top of the lower plug rod 62. The T-shaped limit slide is slidably installed in the T-shaped limit slide. The upper plug rod 61 is fixedly installed on the ear block 5. The ear block 5 is provided with an avoidance opening 501. The lower plug rod 62 is located in the avoidance opening 501. The ear block 5 is provided with a locking mechanism for locking the lower plug rod 62.

[0070] Specifically, the locking mechanism includes two second round rods 22, two second end blocks 23, two driving arms 24 and two second retaining springs 25. The two second round rods 22 are slidably mounted on the inner walls on both sides of the avoidance opening 501. The outer walls on both sides of the lower rod 62 are provided with second round holes 6201 located in the avoidance opening 501. The ends of the two second round rods 22 close to each other extend into the corresponding second round holes 6201. The two second end blocks 23 are respectively arranged on both sides of the ear block 5. The ends of the two second round rods 22 away from each other extend to both sides of the ear block 5, and both The two second retaining springs 25 are respectively sleeved on the two second round insertion rods 22, and the ends of the two second retaining springs 25 that are close to each other are fixedly connected to the ear blocks 5, and the ends of the two second retaining springs 25 that are away from each other are fixedly connected to the corresponding second end blocks 23. By pushing the two driving arms 24 to both sides, the two second round insertion rods 22 can be moved to both sides and then withdrawn from the corresponding second round insertion holes 6201. In order to further improve the convenience of operation, Figure 16 and Figure 23 As shown, the locking mechanism also includes two push rods 26 and two finger plates 27. The two push rods 26 are both inserted into and slidably mounted on the ear block 5. One end of the two push rods 26 is fixedly connected to the corresponding driving arm 24, and the other end of the two push rods 26 is fixedly connected to the corresponding finger plate 27. There is an avoidance slide on the two finger plates 27. The push rod 26 fixed on the left finger plate 27 passes through the avoidance slide on the right finger plate 27, and the push rod 26 fixed on the right finger plate 27 passes through the avoidance slide on the left finger plate 27. This design allows the relevant personnel to push the two driving arms 24 to move to both sides through the two push rods 26 when pinching the two finger plates 27 inward with the index finger and thumb.

[0071] In this embodiment, in order to facilitate the separate extraction of the lower insertion rod 62 , a hand-gripping groove 6202 is provided at the bottom of the lower insertion rod 62 , and a finger hole 502 connected to the avoidance opening 501 is provided on the ear block 5 .

[0072] In this embodiment, when installing the lower insertion rod 62, in order to be able to position it, a positioning groove connected to the avoidance opening 501 is opened on the ear block 5, and a positioning block 621 is provided on the lower insertion rod 62. The positioning block 621 is set at the top of the T-shaped limit slide. The positioning block 621 is located in the positioning groove and contacts the inner wall of the positioning groove on the side close to the rotor 1. During the process of inserting the lower insertion rod 62, after the positioning block 621 completely enters the positioning groove, it is blocked by the inner wall of the positioning groove and cannot move further. At this time, the lower insertion rod 62 is installed in place, and the two second round holes 6201 are axially aligned with the two second round insertion rods 22.

[0073] In this embodiment:

[0074] With the above arrangement, when the permanent magnet 2 is assembled first and then the central shaft 3 is assembled, the upper insertion rod 61 can be inserted into the isosceles trapezoidal hole 103 first, so that the multiple circular pressing rods 7 are moved to press and fix the permanent magnet 2. During this process, the multiple square blocking rods 18 will not interfere and therefore will not move, which will not hinder the installation of the central shaft 3. After the central shaft 3 is installed, the multiple lower insertion rods 62 are inserted into the isosceles trapezoidal hole 103. When inserting, first pinch the two finger plates 27 inward with the index finger and thumb, which will push the two driving arms 24 to move to both sides respectively, and under the drive of the two driving arms 24, the two second circular insertion rods 22 will move back to back, and the ends of the two second circular insertion rods 22 that are close to each other will enter the ear block 5, which will not hinder the lower insertion rod 62. When the lower rod 62 is inserted into the permanent magnet groove 101, the two second circular insertion holes 6201 on both sides thereof will be aligned with the axial direction of the two second circular insertion rods 22 respectively, and the two finger plates 27 can be loosened. After the human power is lost, the two second circular insertion rods 22 will perform a reset movement under the tension of the two second holding springs 25, thereby being inserted into the corresponding second circular insertion holes 6201, locking the lower rod 62.

[0075] When the center shaft 3 needs to be replaced later, the multiple lower plug rods 62 can be pulled out one by one to release the axial restriction of the center shaft 3. The specific operation is to first pinch the two finger plates 27 inward with the index finger and thumb. It can be seen from the description of the above working principle that the two second round plug rods 22 respectively move back to the sides, thereby withdrawing from the corresponding second round insertion holes 6201, thereby releasing the lock on the lower plug rod 62. Then the relevant personnel can pass the fingers through the finger holes 502 and extend them upward into the hand-picking grooves 6202, and finally pull the lower plug rod 62 outward to withdraw it. After the lower plug rod 62 is pulled out, due to the loss of resistance, the square block rod 18 will perform a reset movement under the elastic force of the second reset spring 20, and its end away from the second set of plates 19 will eventually withdraw from the annular groove 301, thereby releasing the axial restriction of the center shaft 3;

[0076] In the case where the central shaft 3 is assembled first and then the permanent magnet 2 is assembled, the lower insertion rod 62 and the upper insertion rod 61 can be combined together, and the lower insertion rod 62 is also fixed by the locking mechanism, and then the lower insertion rod 62 and the upper insertion rod 61 are inserted into the isosceles trapezoidal hole 103 together;

[0077] The present embodiment provides an isosceles trapezoidal insertion rod 6 composed of an upper insertion rod 61 and a lower insertion rod 62. The lower insertion rod 62 can be separated from the upper insertion rod 61, and a locking mechanism is provided on the ear block 5 to lock the lower insertion rod 62. In the case of assembling the permanent magnet 2 first and then the center shaft 3, the upper insertion rod 61 can be inserted into the isosceles trapezoidal hole 103 to complete the fixation of the permanent magnet 2. After the assembly of the center shaft 3 is completed, the lower insertion rod 62 is inserted into the isosceles trapezoidal hole 103 and locked by the locking mechanism, thereby realizing axial limitation of the center shaft 3; in the case of assembling the center shaft 3 first and then the permanent magnet 2, the lower insertion rod 62 can be combined with the upper insertion rod 61 and locked, and then inserted into the isosceles trapezoidal hole 103 together. While achieving fixation of the permanent magnet 2, the axial limitation of the center shaft 3 can be achieved, which has the advantage of flexible use.

[0078] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A six-slot multi-pole permanent magnet staggered embedded rotor structure, comprising a rotor (1), wherein a central shaft hole (102) and six rotationally symmetrically distributed permanent magnet slots (101) are provided in the rotor (1), a central rotating shaft (3) is provided in the central shaft hole (102), and two permanent magnets (2) are provided in the permanent magnet slots (101), characterized in that: The rotor (1) is further provided with six rotationally symmetrically distributed isosceles trapezoidal holes (103), a mounting ring (4) is provided on the front side of the rotor (1), and six rotationally symmetrically distributed ear blocks (5) are integrally formed on the mounting ring (4), and an isosceles trapezoidal plug rod (6) is installed on the ear block (5), and the end of the isosceles trapezoidal plug rod (6) away from the ear block (5) extends into the corresponding isosceles trapezoidal hole (103), and a first square groove (1031) is provided on both inner waist surfaces of the isosceles trapezoidal hole (103), and a plurality of circular abutting rods (7) are slidably installed in the first square groove (1031), and the ends of the plurality of circular abutting rods (7) away from the central rotating shaft (3) extend into the corresponding permanent magnet slot (101), and and are in contact with the corresponding permanent magnet (2); a first set of plates (8) located in the first square groove (1031) is fixedly sleeved on the outer wall of the circular pressing rod (7); a first return spring (9) located in the first square groove (1031) is sleeved on the outer wall of the circular pressing rod (7); one end of the first return spring (9) is in contact with the first set of plates (8), and the other end is in contact with the inner wall of the first square groove (1031) on one side relative to the isosceles trapezoidal plug (6); one end of the circular pressing rod (7) located in the first square groove (1031) is in contact with the waist surface of the isosceles trapezoidal plug (6); and the connection between the end surface of the end of the isosceles trapezoidal plug (6) away from the ear block (5) and the adjacent outer wall is designed with a rounded corner; Two fixing blocks (11) are fixedly installed on the front side of the rotor (1), and a first round plug rod (12) is passed through and slidably installed on each of the two fixing blocks (11), and a first end plate (13) is fixedly installed on the ends of the two first round plug rods (12) close to each other, and a first retaining spring (14) is sleeved on each of the two first round plug rods (12), and the ends of the two first retaining springs (14) close to each other are fixedly connected to the corresponding first end plate (13), and the ends of the two first retaining springs (14) away from each other are fixedly connected to the corresponding fixing blocks (11), and two first round insertion holes (401) are provided in the mounting ring (4), and the ends of the two first round plug rods (12) away from each other extend into the corresponding first round insertion holes (401).

2. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 1, characterized in that: The outer ring of the mounting ring (4) is provided with a plurality of arc-shaped anti-slip grooves distributed in a rotationally symmetrical manner.

3. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 1, characterized in that: A rotatable ferrule (15) is rotatably sleeved on the outer walls of the two mounting rings (4), a hand lever (16) is integrally formed on the outer wall of the rotatable ferrule (15), and two stoppers (17) are fixedly mounted on the front side of the rotor (1).

4. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 1, characterized in that: A second square groove (1032) is provided on the inner wall of each of the plurality of isosceles trapezoidal holes (103) close to the central rotating shaft (3); a square blocking rod (18) is slidably mounted on the inner wall of the second square groove (1032) close to the central rotating shaft (3); a second set of plates (19) located in the second square groove (1032) is fixedly sleeved on the square blocking rod (18); a second return spring (20) located in the second square groove (1032) is sleeved on the square blocking rod (18); the second return spring ( One end of the square blocking rod (18) contacts the second set of plates (19), and the other end contacts the inner wall of the second square groove (1032) relative to the isosceles trapezoidal plug rod (6). An annular groove (301) is provided on the outer wall of the central rotating shaft (3). The ends of the plurality of square blocking rods (18) close to each other extend into the annular groove (301). The ends of the square blocking rods (18) located in the second square groove (1032) contact the outer wall of the isosceles trapezoidal plug rod (6) close to the central rotating shaft (3).

5. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 4, characterized in that: A hemispherical block is integrally formed on one end of the square blocking rod (18) away from the central rotating shaft (3), and the hemispherical block contacts the outer wall of the isosceles trapezoidal insertion rod (6) on one side close to the central rotating shaft (3).

6. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 4, characterized in that: The isosceles trapezoidal plug rod (6) comprises an upper plug rod (61) and a lower plug rod (62), wherein the lower plug rod (62) is slidably mounted on the bottom of the upper plug rod (61), and the upper plug rod (61) is fixedly mounted on the ear block (5), wherein a clearance opening (501) is provided on the ear block (5), and the lower plug rod (62) is located in the clearance opening (501), and a locking mechanism for locking the lower plug rod (62) is provided on the ear block (5).

7. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 6, characterized in that: The locking mechanism comprises two second round insert rods (22), two second end blocks (23), two driving arms (24) and two second retaining springs (25). The two second round insert rods (22) are respectively slidably mounted on the inner walls on both sides of the avoidance opening (501). The outer walls on both sides of the lower insert rod (62) are provided with second round insert holes (6201) located in the avoidance opening (501). The ends of the two second round insert rods (22) that are close to each other extend into the corresponding second round insert holes (6201). The two second end blocks (23) are respectively arranged on both sides of the ear block (5). The ends of the two second round insert rods (22) that are away from each other extend to both sides of the ear block (5) and are fixedly connected to the corresponding second end block (23). The two driving arms (24) are fixedly mounted on the outer rings of the two second end blocks (23). The two second retaining springs (25) are respectively sleeved on the two second round insert rods (22). The ends of the two second retaining springs (25) that are close to each other are fixedly connected to the ear block (5), and the ends of the two second retaining springs (25) that are away from each other are fixedly connected to the corresponding second end block (23).

8. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 7, characterized in that: The locking mechanism further comprises two push rods (26) and two finger plates (27), wherein the two push rods (26) are both passed through and slidably mounted on the ear block (5), one end of the two push rods (26) is fixedly connected to the corresponding driving arm (24), and the other end of the two push rods (26) is fixedly connected to the corresponding finger plate (27).

9. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 6, characterized in that: A hand-gripping groove (6202) is provided at the bottom of the lower insertion rod (62), and a finger hole (502) communicating with the avoidance opening (501) is provided on the ear block (5).

10. The six-slot multi-pole permanent magnet staggered embedded rotor structure according to claim 6, characterized in that: A positioning groove communicating with the avoidance opening (501) is provided on the ear block (5), and a positioning block (621) is provided on the lower insertion rod (62). The positioning block (621) is located in the positioning groove and contacts an inner wall of the positioning groove on a side close to the rotor (1).

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