A motor with improved slot filling rate

Abstract

The present invention belongs to the technical field of electric motors, and specifically, is an electric motor with improved slot fill rate, comprising an electric motor body, a stator arranged inside the electric motor body, the stator comprising a stator core, slots evenly arranged inside the stator core, stator windings inserted inside the slots, an extrusion assembly for extruding the stator windings in the slots arranged on the stator, the extrusion assembly comprising an insulating plate and an extrusion part, mounting holes are provided at both ends of the insulating plate, and a threaded rod 1 is threadedly connected with the mounting holes on the insulating plate. By inserting the insulating plate into the slots, the insulating plate squeezes the coils due to the force of a spring, so that the gap between each coil becomes smaller, and one insulating plate occupies less space in the slots. At the same time, the insulating plate squeezes the stator windings due to the tension of the spring 1, so that more stator windings are arranged in the slots, thereby improving the slot fill rate of the electric motor body.

Description

Technical Field

[0001] The invention belongs to the technical field of electric motors, in particular to an electric motor with improved slot fill rate. Background Art

[0002] As a plurality of evenly distributed installation slots are usually provided on the stator of the motor stator and rotor for installing the stator winding, the existing installation slots have certain arc-shaped walls inside, and the existing stator windings are directly inserted into the installation slots, which will cause a certain gap between the stator winding and the inner wall of the installation slot after the stator winding is installed into the installation slot, resulting in a reduction in the slot fill rate of the installation slot, thereby affecting the performance of the motor.

[0003] The existing patent CN202420046808.2 discloses a new type of motor stator and rotor, including a stator and a rotor, the stator including a plurality of stator punchings, and the plurality of stator punchings are stacked on each other; notches are evenly arranged on the inner side of the stator punchings, insulating paper is installed inside the notches, a stator winding is inserted inside the insulating paper, and the cross-sections of the notches, insulating paper and stator winding are all rectangular; grooves are evenly arranged on the outer side of the rotor; the square notches, insulating paper and stator windings can increase the full slot rate of the notches and improve the performance of the motor.

[0004] However, the insulating paper of the motor equipment in the above disclosed technology occupies a certain slot space, and the insulating paper cannot squeeze the stator winding so that more stator windings can be arranged in the slot, and the degree of improving the slot fill rate is limited.

[0005] To this end, the present invention provides a motor with improved slot fill rate. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the electric motor with improved slot fill rate described in the present invention comprises a motor body, a stator is arranged inside the motor body, the stator comprises a stator core, notches are evenly provided on the inner side of the stator core, and a stator winding is inserted into the inner side of the notch; an extrusion assembly for extruding the stator winding in the notch is provided on the stator, the extrusion assembly comprises an insulating plate and an extrusion part, both ends of the insulating plate are provided with mounting holes, and the inner wall of the mounting hole is provided with threads; the extrusion parts are symmetrically provided with two, the extrusion parts comprise a supporting connecting plate and a pull rod, one end of the supporting connecting plate is connected to the outer surface of the stator core, the supporting connecting plate is provided with a through slot, and the pull rod The rod movably passes through the through slot, and one end of the pull rod is fixedly connected to a positioning block, a threaded rod 1 is threadedly installed on the positioning block, and the threaded rod 1 is threadedly connected to the mounting hole on the insulating plate, a spring 1 is arranged between the support connecting plate and the positioning block, a through hole is provided on the support connecting plate, a limiting hole is provided on the pull rod, and the through hole is connected to the through slot; a limiting part for limiting the pull rod is connected to the support connecting plate, and the limiting part includes a slip ring, which is slidably installed on the support connecting plate, a straight rod is fixedly connected to one side of the slip ring, and the end of the straight rod away from the slip ring is rotatably connected to the straight plate through a pin shaft, and a side of the straight plate close to the straight rod is fixedly connected to the limiting rod, and the limiting rod can movably pass through the through hole and be plugged into the second limiting hole.

[0008] Furthermore, a wiring mechanism is connected to the top of the motor body, and the wiring mechanism includes a junction box, which is fixedly installed on the top of the motor body. An insulating partition is provided inside the junction box, and three through holes are evenly opened on the insulating partition. A box cover is rotatably connected to the top of the junction box, and a wiring part is connected to the upper surface of the insulating partition. A switching part is provided inside the junction box.

[0009] Furthermore, the wiring part includes a movable plate, a rotating rod, a fixed plate and a driving part. Three clamping plates located on the inner side of the through hole are fixedly connected to the bottom of the movable plate. The rotating rod is rotatably installed in the wiring box. Two connecting rods are symmetrically connected to the outer surface of the rotating rod. A sphere is fixedly connected to both ends of the connecting rod. The fixed plate is vertically fixed on the upper surface of the insulating partition. A plurality of elastic plates are arranged between the fixed plate and the movable plate.

[0010] Furthermore, two driving parts are symmetrically arranged, and the driving part includes a connecting frame and a gear. A sphere is fixedly connected to the top of the connecting frame, a spring is connected to the bottom of the connecting frame, the lower end of the spring is connected to the upper surface of the insulating partition, a telescopic rod is arranged between the bottom of the connecting frame and the upper surface of the insulating partition, a rack is fixedly connected to one side of the connecting frame, the gear is fixedly connected to the circumferential outer surface of the rotating rod, and the rack is meshingly connected to the gear.

[0011] Furthermore, the switching part includes a conductive hollow tube, an insulating support plate, a conductive plate and an insulating mounting plate. The conductive hollow tube is open at the top and closed at the bottom. Three conductive hollow tubes are symmetrically arranged and the tops of the tubes are fixedly connected to the lower surface of the insulating partition. The conductive hollow tube is located directly below the through hole and is connected to the through hole. The clamping plate is located on the inner side of the conductive hollow tube and can be tightly attached to the inner wall of the conductive hollow tube.

[0012] Furthermore, one side of the conductive hollow tube is connected to a soft wire one which is electrically connected to the internal winding of the motor body, the upper surface of the insulating support plate is fixedly connected to a conductive plate, the upper surface of the insulating support plate is symmetrically connected to two brackets, a sphere three is rotatably mounted on the top of the bracket, and a spring three is arranged between the lower surface of the insulating support plate and the inner bottom surface of the junction box.

[0013] Furthermore, an insulating connecting plate is fixedly connected between two adjacent conductive hollow tubes, a side surface of the insulating connecting plate is connected to a spring four, an end of the spring four away from the insulating connecting plate is connected to an arc plate one, two arc plates two are symmetrically arranged on one side surface of the insulating mounting plate, a spring five is arranged between the insulating mounting plate and the inner wall of the junction box, and the sphere three can extend between the arc plates one and two.

[0014] Furthermore, a conductive block is provided on one side of the conductive hollow tube, a groove is opened on the conductive block, three conductive rods are symmetrically provided on one side of the insulating mounting plate, the conductive rods can be inserted into the groove and tightly attached to the inner wall of the groove, and the conductive rods are connected to two soft wires electrically connected to the internal winding of the motor body.

[0015] Furthermore, an insulating column is fixedly connected to the upper surface of the insulating support plate, the insulating column movably penetrates the insulating partition, and a lower pressing plate is arranged on the top of the insulating column.

[0016] Furthermore, a second threaded rod is threadedly installed on the lower pressure plate, a threaded hole is provided on the fixing plate, and the second threaded rod can be threadedly installed in the threaded hole.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The electric motor with improved slot fill rate described in the present invention has an extrusion assembly for extruding the stator winding in the slot, and an insulating plate is inserted into the slot. The insulating plate squeezes the coil due to the tension of a spring, so that the gap between each coil becomes smaller, and an insulating plate occupies a smaller space in the slot. At the same time, the insulating plate squeezes the stator winding due to the tension of the spring, which makes it easier to set more stator windings in the slot, thereby improving the slot fill rate of the motor body.

[0019] 2. The electric motor with improved slot fill rate described in the present invention has a wiring mechanism connected to the top of the motor body, an insulating partition is arranged inside the junction box, a wiring part is connected to the upper surface of the insulating partition, and the elastic plate causes the clamping plate to squeeze the peeled end of the power cord tightly against the inner wall of the conductive hollow tube away from the fixed plate, thereby ensuring a good electrical connection and realizing the power wiring of the motor body, and realizing that the three power cords of the motor body can be connected during the process of opening and closing the junction box, without the need to install the three power cords on the wiring terminals one by one through bolts in a time-consuming and laborious manner, thereby saving labor costs.

[0020] 3. The electric motor with improved slot fill rate described in the present invention has a switching part arranged in the junction box, which presses the clamping plate downward, and when the telescopic rod 2 is retracted to the shortest, the threaded rod 2 is threadedly installed into the threaded hole, so that the conductive rod is inserted into the groove and fits tightly against the inner wall of the groove, thereby ensuring a good electrical connection, and then the U1 end of the motor body is connected to the U2 end, the V1 end is connected to the V2 end, and the W1 end is connected to the W2 end, thereby realizing the triangle connection of the motor body, and there is no need to install the connecting metal sheet on the terminal by bolts in a time-consuming and laborious manner, thereby saving labor costs.

[0021] 4. The present invention provides an electric motor with improved slot fill rate. A switching part is provided in the junction box. The threaded rod 2 is rotated out of the threaded hole, and then the clamping plate is loosened. The sphere 3 extends into the middle of the arc plate 1 and the arc plate 2, and the conductive rod is pulled out of the groove. The conductive plate moves upward and fits tightly against the conductive rod, thereby ensuring a good electrical connection, connecting the three conductive rods into one, and then connecting the U2, V2, and W2 ends of the motor body together, realizing the star connection of the motor body. There is no need to install the connecting metal sheet on the terminal block by bolts, which is time-consuming and labor-intensive, thus saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a motor with improved slot fill rate according to the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure in which the stator is connected to the extrusion assembly;

[0025] Figure 3 yes Figure 3 A schematic diagram of the structure with a partial enlargement at the center;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the stator;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the extrusion component;

[0028] Figure 6 yes Figure 5 A schematic diagram of the structure with a partial enlargement at B in the middle;

[0029] Figure 7 yes Figure 5 A schematic diagram of the structure with a partial enlargement at C in the middle;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the supporting connecting plate;

[0031] Fig. 9 It is a front view of the internal structure of the junction box of the wiring mechanism;

[0032] Fig.10 It is a three-dimensional structural schematic diagram of another perspective in which an insulating partition, a wiring part, a switching part, and a power line are connected;

[0033] Fig.11 It is a one-view three-dimensional structural schematic diagram of the connection of the insulating partition, the wiring part, the switching part, and the power line;

[0034] Fig.12 yes Fig.11 A schematic diagram of the structure with a partial enlargement at D in the middle;

[0035] Fig.13 yes Fig.11 The schematic diagram of the structure with a partial enlargement at E in the middle;

[0036] Fig.14 yes Fig.11 A schematic diagram of the structure with a partial enlargement at F in the middle;

[0037] Fig.15 is a schematic diagram of the three-dimensional structure of the switching unit;

[0038] Fig.16 yes Fig.15 A schematic diagram of the structure with a partial enlargement at G in the middle;

[0039] Fig.17 It is a schematic diagram of a three-dimensional structure in which an insulating support plate, a conductive plate, a bracket, a sphere three, a spring three, and a telescopic rod two are connected;

[0040] Fig.18 This is the circuit diagram when the motor body is connected in triangle;

[0041] Fig.19 This is the circuit schematic diagram when the motor body is connected in star shape;

[0042] In the figure: 1. Motor body;

[0043] 2. stator; 21. stator core; 22. slot; 23. stator winding;

[0044] 3. Extrusion assembly; 31. Insulation plate; 32. Extrusion part; 321. Support connecting plate; 322. Through slot; 323. Pull rod; 324. Positioning block; 325. Threaded rod 1; 326. Spring 1; 327. Through hole; 328. Limiting hole; 329. Limiting part; 3291. Slip ring; 3292. Straight rod; 3293. Straight plate; 3294. Limiting rod;

[0045] 4. Power cord;

[0046] 5. Wiring mechanism; 51. Junction box; 52. Insulating partition; 53. Through hole; 54. Box cover; 55. Wiring part; 56. Switching part; 551. Movable plate; 552. Pressing plate; 553. Rotating rod; 554. Connecting rod; 555. Sphere 1; 556. Fixed plate; 557. Elastic plate; 558. Driving part; 559. Threaded hole; 5581. Connecting frame; 5582. Sphere 2; 5583. Spring 2; 5584. Telescopic rod 1; 5585. Rack; 5586. Gear; 561. Conductive hollow tube; 562. Soft wire 1; 5 63. Insulating support plate; 564. Conductive plate; 565. Bracket; 566. Sphere three; 567. Spring three; 568. Insulating connecting plate; 569. Spring four; 5610. Arc plate one; 5611. Insulating mounting plate; 5612. Arc plate two; 5613. Spring five; 5614. Conductive block; 5615. Groove; 5616. Conductive rod; 5617. Soft wire two; 5618. Insulating column; 5619. Lower pressure plate; 5620. Threaded rod two; 5621. Telescopic rod two; 5622. Telescopic rod three; 5623. Telescopic rod four. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0048] Embodiment 1

[0049] like Figures 1 to 8 As shown, an electric motor with improved slot fill rate according to an embodiment of the present invention comprises an electric motor body 1, wherein a stator 2 is arranged inside the electric motor body 1, and the stator 2 comprises a stator core 21, slots 22, and a stator winding 23. The stator core 21 is evenly provided with slots 22, and the stator winding 23 is inserted into the slots 22.

[0050] Specifically, the stator 2 is provided with an extrusion assembly 3 for extruding the stator winding 23 in the slots 22. The number of the slots 22 and the extrusion assembly 3 are equal and one-to-one corresponding. The extrusion assembly 3 includes an insulating plate 31 and an extrusion portion 32. The insulating plate 31 is made of insulating material, and both ends of the insulating plate 31 are provided with mounting holes, and the inner wall of the mounting hole is provided with threads.

[0051] Specifically, the extrusion part 32 is symmetrically provided with two ends respectively located at the two ends of the insulating plate 31, and the extrusion part 32 includes a support connecting plate 321, a through slot 322, a pull rod 323, a positioning block 324, a threaded rod 325, a spring 326, a through hole 327, a limiting hole 328, and a limiting part 329. One end of the support connecting plate 321 is connected to the outer surface of the stator core 21, and the connection method between the support connecting plate 321 and the stator core 21 is preferably a detachable connection method, and the support connecting plate 321 can be removed from the outer surface of the stator core 21. A through slot 322 is provided on the support connecting plate 321, and the pull rod 323 movably passes through the through slot 322. A pull ring is provided on the pull rod 323 for facilitating pulling the pull rod 323. One end of the pull rod 323 is fixedly connected to a positioning block 324, and a threaded rod 325 is threadedly installed on the positioning block 324, and the threaded rod 325 is threadedly connected to the mounting hole on the insulating plate 31. A spring 326 is provided between the supporting connecting plate 321 and the positioning block 324, one end of the spring 326 is connected to the supporting connecting plate 321, and the other end of the spring 326 is connected to the positioning block 324. A through hole 327 is provided on the supporting connecting plate 321, and a limiting hole 328 is provided on the pull rod 323. The through hole 327 is connected to the through slot 322. By first inserting the insulating plate 31 into the notch 22, and then threading the threaded rod 325 onto the insulating plate 31, when the insulating plate 31 is located in the notch 22, the spring 326 is in a compressed state.

[0052] Specifically, the support link plate 321 is connected with a limiting part 329 for limiting the pull rod 323, and the limiting part 329 includes a slip ring 3291, a straight rod 3292, a straight plate 3293, and a limiting rod 3294. The slip ring 3291 is slidably mounted on the support link plate 321, and one side of the slip ring 3291 is fixedly connected with the straight rod 3292, and one end of the straight rod 3292 away from the slip ring 3291 is rotatably connected with the straight plate 3293 through a pin shaft, and the side of the straight plate 3293 close to the straight rod 3292 is fixedly connected with the limiting rod 3294, and the limiting rod 3294 can be movably inserted into the second limiting hole 328 through the through hole 327.

[0053] Specifically, the existing disclosed patent CN202420046808.2 discloses a novel motor stator and rotor, including a stator and a rotor, wherein the stator includes a plurality of stator punchings, and the plurality of stator punchings are stacked on each other; the inner side of the stator punchings is evenly provided with notches, the inside of the notches is installed with insulating paper, the inside of the insulating paper is plugged with a stator winding, and the cross-sections of the notches, insulating paper and stator winding are all rectangular; the outer side of the rotor is evenly provided with grooves; the square notches, insulating paper and stator windings can improve the slot full rate and improve the performance of the motor. However, the insulating paper of the motor equipment in the above disclosed technology occupies a certain slot space, and the insulating paper cannot squeeze the stator winding so that the notch can be provided with more stator windings, and the degree of improving the slot full rate is limited.

[0054] The working principle and use process of the embodiment of the present invention are as follows:

[0055] First, insert the insulating plate 31 into the slot 22, then rotate the threaded rod 1 325 to thread the threaded rod 1 325 onto the insulating plate 31, and then insert the coils of the stator winding 23 into the slot 22 one by one; before inserting each coil, pull the pull rod 323 to move the positioning block 324 toward the direction close to the supporting connecting plate 321, further compress the spring 1 326, and insert the limiting rod 3294 into the limiting hole 2 328, and when the coil is inserted into the slot 22, pull the limiting rod 3294 out of the limiting hole 2 328, and the insulating plate 31 is squeezed due to the tension of the spring 1 326. The coil is pressed to reduce the gap between each coil, and an insulating plate 31 occupies a smaller space in the slot 22. At the same time, the insulating plate 31 is squeezed by the tension of the spring 326 to squeeze the stator winding 23, so that more stator windings 23 can be arranged in the slot 22, thereby improving the slot fill rate of the motor body 1. This solves the problem that the insulating paper of the motor equipment in the existing disclosed patent CN202420046808.2 occupies a certain slot space, and at the same time, the insulating paper cannot squeeze the stator winding so that more stator windings can be arranged in the slot, and the degree of improving the slot fill rate is limited.

[0056] Embodiment 2

[0057] like Figures 9 to 19 As shown, compared with Example 1, this embodiment is different from Example 1 in that:

[0058] The top of the motor body 1 is connected with a wiring mechanism 5, which includes a junction box 51, an insulating partition 52, a through hole 53, a box cover 54, a wiring part 55, and a switching part 56. The junction box 51 is fixedly installed on the top of the motor body 1, and a box cover 54 is rotatably connected to the top of the junction box 51. A lock can be installed on the junction box 51. The top opening of the junction box 51 is covered by rotating the box cover 54, and then the lock on the junction box 51 is closed. An insulating partition 52 is arranged inside the junction box 51. The insulating partition 52 is made of insulating material and arranged horizontally. Three through holes 53 are evenly opened on the insulating partition 52. The peripheral side surface of the insulating partition 52 is fixedly connected to the inner wall of the junction box 51. The insulating partition 52 divides the inside of the junction box 51 into two. The upper surface of the insulating partition 52 is connected to the wiring part 55, and a switching part 56 is arranged inside the junction box 51.

[0059] Specifically, the wiring portion 55 includes a movable plate 551, a clamping plate 552, a rotating rod 553, a connecting rod 554, a sphere 555, a fixed plate 556, an elastic plate 557, a driving portion 558, and a threaded hole 559. The movable plate 551 is vertically arranged, and three clamping plates 552 are fixedly connected to the bottom of the movable plate 551. The movable plate 551 and the three clamping plates 552 are integrally formed. The three clamping plates 552 are symmetrically arranged and correspond to the through holes 53 one by one. One clamping plate 552 is arranged inside a through hole 53, and the clamping plate 552 is vertically arranged and can move inside the through hole 53. The rotating rod 553 is horizontally arranged and located above the insulating partition 52. Both ends of the rotating rod 553 are rotatably connected to the inner wall of the junction box 51. Two connecting rods 554 are symmetrically connected to the outer surface of the circumference of the rotating rod 553. The rotating rod 553 and the connecting rod 554 are vertically fixedly connected. Both ends of the connecting rod 554 are fixedly connected to a ball 555. The fixed plate 556 is vertically arranged. The bottom of the fixed plate 556 is fixedly connected to the upper surface of the insulating partition 52. Four elastic plates 557 are symmetrically arranged between the fixed plate 556 and the movable plate 551. One end of the elastic plate 557 is connected to the fixed plate 556, and the other end of the elastic plate 557 is connected to the movable plate 551.

[0060] Specifically, two driving parts 558 are symmetrically arranged, and the driving parts 558 include a connecting frame 5581, a second ball 5582, a second spring 5583, a telescopic rod 1 5584, a rack 5585, and a gear 5586. The connecting frame 5581 is a U-shaped structure and is arranged vertically. The top of the connecting frame 5581 is fixedly connected with the second ball 5582, the upper end of the second spring 5583 is connected to the bottom of the connecting frame 5581, and the lower end of the second spring 5583 is connected to the upper surface of the insulating partition 52. A telescopic rod 1 5584 is arranged on the inner side of the second spring 5583, the upper end of the telescopic rod 1 5584 is fixedly connected to the bottom of the connecting frame 5581, and the lower end of the telescopic rod 1 5584 is fixedly connected to the upper surface of the insulating partition 52. The telescopic rod 1 5584 ensures that the connecting frame 5581 can move up and down stably.

[0061] Specifically, a rack 5585 is fixedly connected to one side of the connecting frame 5581. The rack 5585 is vertically arranged. The gear 5586 is fixedly connected to the circumferential outer surface of the rotating rod 553. The rotating rod 553 rotates together with the gear 5586. The rack 5585 is meshed with the gear 5586. When the rack 5585 moves vertically up and down, the gear 5586 can be rotated, thereby rotating the rotating rod 553.

[0062] Specifically, the switching part 56 includes a conductive hollow tube 561, a soft wire 1 562, an insulating support plate 563, a conductive plate 564, a bracket 565, a sphere 3 566, a spring 3 567, an insulating connecting plate 568, a spring 4 569, an arc plate 1 5610, an insulating mounting plate 5611, an arc plate 2 5612, a spring 5613, a conductive block 5614, a groove 5615, a conductive rod 5616, a soft wire 2 5617, an insulating column 5618, a lower pressure plate 5619, a threaded rod 2 5620, a telescopic rod 2 5621, a telescopic rod 3 5622, and a telescopic rod 4 5623.

[0063] Specifically, the conductive hollow tube 561 is preferably made of a conductive metal material. There are three conductive hollow tubes 561 symmetrically arranged and all are vertically arranged. The conductive hollow tube 561 is hollow inside, open at the top, and closed at the bottom. The top of the conductive hollow tube 561 is fixedly connected to the lower surface of the insulating partition 52. The conductive hollow tube 561 is located directly below the through hole 53 and is connected to the through hole 53. The clamping plate 552 is located on the inner side of the conductive hollow tube 561. The clamping plate 552 can move inside the conductive hollow tube 561, and the clamping plate 552 can be tightly attached to the inner wall of the conductive hollow tube 561.

[0064] Specifically, when the connecting rod 554 is in a horizontal state, the sphere 1 555 will squeeze the movable plate 551 so that the movable plate 551 compresses the elastic plate 557, and at this time, the pressing plate 552 is in close contact with the inner wall of the conductive hollow tube 561 on one side close to the fixed plate 556. When the connecting rod 554 is in a vertical state, the sphere 1 555 will not squeeze the movable plate 551, and due to the tension of the elastic plate 557, the pressing plate 552 is in close contact with the inner wall of the conductive hollow tube 561 on one side away from the fixed plate 556.

[0065] Specifically, one side of the conductive hollow tube 561 is connected to a soft wire 562 electrically connected to the internal winding of the motor body 1. The soft wire 562 movably penetrates the bottom of the junction box 51, and the three soft wires 562 are respectively connected to the U1, V1, and W1 ends of the motor body 1. The insulating support plate 563 is made of insulating material, and a conductive plate 564 is fixedly connected to the upper surface of the insulating support plate 563. The conductive plate 564 is preferably made of a conductive metal material and is vertically arranged. Two brackets 565 are symmetrically connected to the upper surface of the insulating support plate 563, and the brackets 565 are vertically arranged. A sphere 3 566 is rotatably installed on the top of the bracket 565.

[0066] Specifically, a spring 3 567 is arranged between the lower surface of the insulating support plate 563 and the inner bottom surface of the junction box 51. Four springs 3 567 are symmetrically arranged. The upper end of the spring 3 567 is connected to the lower surface of the insulating support plate 563, and the lower end of the spring 3 567 is connected to the inner bottom surface of the junction box 51. A telescopic rod 2 5621 is arranged on the inner side of each spring 3 567. The telescopic rod 2 5621 is arranged vertically. The upper end of the telescopic rod 2 5621 is fixedly connected to the lower surface of the insulating support plate 563, and the lower end of the telescopic rod 2 5621 is fixedly connected to the inner bottom surface of the junction box 51. The telescopic rod 2 5621 ensures that the insulating support plate 563 can move up and down stably. When the insulating support plate 563 moves downward, the conductive plate 564, the bracket 565, and the sphere 3 566 will move downward with the insulating support plate 563, and the insulating support plate 563 will compress the spring 3 567.

[0067] Specifically, an insulating connecting plate 568 is fixedly connected between two adjacent conductive hollow tubes 561. The insulating connecting plate 568 is made of insulating material. A spring 4 569 is connected to one side of the insulating connecting plate 568. The spring 4 569 is horizontally arranged. One end of the spring 4 569 away from the insulating connecting plate 568 is connected to the arc plate 1 5610. A telescopic rod 3 5622 is arranged inside each spring 4 569. The telescopic rod 3 5622 is horizontally arranged. One end of the telescopic rod 3 5622 is fixedly connected to the insulating connecting plate 568, and the other end of the telescopic rod 3 5622 is fixedly connected to the arc plate 1 5610. The telescopic rod 3 5622 ensures that the arc plate 1 5610 can move horizontally stably.

[0068] Specifically, the insulating mounting plate 5611 is made of insulating material, and two arc plates 5612 are symmetrically connected to the insulating mounting plate 5611. The insulating mounting plate 5611 and the two arc plates 5612 are integrally formed. Two springs 5613 are symmetrically arranged, and the springs 5613 are arranged horizontally. One end of the spring 5613 is connected to the insulating mounting plate 5611, and the other end of the spring 5613 is connected to the inner wall of the junction box 51. A telescopic rod 4 5623 is arranged inside each spring 5613, and the telescopic rod 4 5623 is arranged horizontally. One end of the telescopic rod 4 5623 is fixedly connected to the insulating mounting plate 5611, and the other end of the telescopic rod 4 5623 is fixedly connected to the inner wall of the junction box 51. The telescopic rod 4 5623 ensures that the arc plates 5612 can move horizontally stably.

[0069] Specifically, a conductive block 5614 is provided on one side of the conductive hollow tube 561. The conductive block 5614 is preferably made of a conductive metal material, and a groove 5615 is provided on the conductive block 5614. Three conductive rods 5616 are symmetrically provided on one side of the insulating mounting plate 5611. The conductive rods 5616 are preferably made of a conductive metal material. The conductive rods 5616 can be inserted into the groove 5615 and closely attached to the inner wall of the groove 5615. The conductive rods 5616 are connected to the soft wires 5617 electrically connected to the internal winding of the motor body 1. The soft wires 5617 movably penetrate the bottom of the junction box 51, and the three soft wires 5617 are respectively connected to the U2, V2, and W2 ends of the motor body 1.

[0070] Specifically, the sphere 3 566 can extend between the arc plate 1 5610 and the arc plate 2 5612, and the arc surface of the arc plate 1 5610 is arranged opposite to the arc surface of the arc plate 2 5612. When the sphere 3 566 extends into the middle of the arc plate 1 5610 and the arc plate 2 5612, the arc plate 1 5610 will compress the spring 4 569, and the arc plate 2 5612 will also compress the spring 5 5613, and the conductive rod 5616 will be pulled out from the groove 5615. When ball three 566 moves to directly below arc plate one 5610 and arc plate two 5612 and the surface of ball three 566 contacts the bottom of arc plate one 5610 and the bottom of arc plate two 5612 at the same time, due to the tension of spring four 569 and the tension of spring five 5613, the arc surface of arc plate one 5610 contacts the arc surface of arc plate two 5612, and the conductive rod 5616 is inserted into the groove 5615 and is in close contact with the inner wall of the groove 5615.

[0071] Specifically, an insulating column 5618 is fixedly connected to the upper surface of the insulating support plate 563. The insulating column 5618 is made of insulating material and is vertically arranged. The insulating support plate 563 and the insulating column 5618 are formed as one piece. The insulating column 5618 is vertically arranged. The insulating column 5618 movably penetrates the insulating partition 52. The insulating column 5618 can move vertically up and down to drive the insulating support plate 563 to move up and down. The top of the insulating column 5618 is fixedly connected to a lower pressure plate 5619.

[0072] Specifically, the lower pressing plate 5619 is threadedly mounted with a threaded rod 5620, and the fixing plate 556 is provided with a threaded hole 559, and the threaded rod 5620 can be threadedly mounted in the threaded hole 559. When the threaded rod 5620 is threadedly mounted in the threaded hole 559, the insulating support plate 563 cannot move up and down at will.

[0073] The rest of the structure is the same as that of the first embodiment.

[0074] Specifically, when wiring the motor, a wrench needs to be used to tighten the wiring bolts to ensure good electrical connection between the wires and the terminal posts, which is time-consuming and laborious. At the same time, when the motor changes from a triangle connection to a star connection or from a star connection to a triangle connection, the bolts on the connecting metal sheets need to be installed and removed, and the position of the connecting metal sheets needs to be adjusted, which is time-consuming and laborious.

[0075] The working principle and use process of the embodiment of the present invention are as follows:

[0076] Step 1: First, open the lock on the junction box 51, and then rotate the box cover 54 forward 180 degrees to open the junction box 51. The second ball 5582 is not subjected to the pressure of the box cover 54. Due to the tension of the second spring 5583, the telescopic rod 1 5584 is extended to the longest position, and the second ball 5582 extends out of the junction box 51. The rack 5585 moves upward to make the gear 5586 rotate forward a quarter of a turn, and then the rotating rod 553 rotates forward a quarter of a turn, and then the connecting rod 554 rotates from a vertical state to a horizontal state, so that the pressing plate 552 is closely attached to the inner wall of the conductive hollow tube 561 close to the fixed plate 556.

[0077] Step 2: Then, insert the three power cords 4 into the inside of the junction box 51 through the cable introduction holes on the junction box 51, and insert the peeled ends of the three power cords 4 into the conductive hollow tube 561 through the through holes 53 respectively, and then rotate the box cover 54 180 degrees in the opposite direction to cover the junction box 51, and the box cover 54 will press the ball 2 5582 downward to make the ball 2 5582 enter the junction box 51, at this time, the spring 2 5583 is compressed and the telescopic rod 1 5584 is shortened to the shortest, the rack 5585 will move downward to make the gear 5586 reverse a quarter of a turn, thereby making the rotating rod 55 3 is reversed by a quarter of a turn, thereby rotating the connecting rod 554 from a horizontal state to a vertical state, and then the elastic plate 557 causes the pressing plate 552 to squeeze the peeled end of the power line 4 to be close to the inner wall of the conductive hollow tube 561 away from the fixing plate 556, thereby ensuring a good electrical connection, realizing the power connection of the motor body 1, and realizing that the three power lines 4 of the motor body 1 can be connected during the process of opening and closing the junction box 51, without the need to install the three power lines 4 on the wiring terminals one by one through bolts in a time-consuming and laborious manner, thereby saving labor costs.

[0078] In the embodiment of the present invention: when the motor body 1 needs to be connected in a triangle manner, first press down the lower pressing plate 5619, so that the insulating column 5618 drives the insulating support plate 563 to move downward, and then the insulating support plate 563 compresses the spring 3 567, and when the telescopic rod 2 5621 is shortened to the shortest, the threaded rod 2 5620 is threadedly installed into the threaded hole 559, and at this time, the sphere 3 566 moves to the bottom between the arc plate 1 5610 and the arc plate 2 5612, and the surface of the sphere 3 566 is in contact with the bottom of the arc plate 1 5610 and the bottom of the arc plate 2 5612 at the same time. Due to the tension of spring four 569 and the tension of spring five 5613, the arc surface of arc plate one 5610 and the arc surface of arc plate two 5612 contact each other, so that the conductive rod 5616 is inserted into the groove 5615 and is tightly attached to the inner wall of the groove 5615, ensuring a good electrical connection, thereby connecting the U1 end of the motor body 1 to the U2 end, the V1 end to the V2 end, and the W1 end to the W2 end, realizing the triangle connection of the motor body 1, and there is no need to install the connecting metal sheet on the terminal block by bolts in a time-consuming and laborious manner, thereby saving labor costs.

[0079] In the embodiment of the present invention, when the motor body 1 needs to be star-connected, firstly, the threaded rod 5620 is rotated out of the threaded hole 559, and then the lower pressure plate 5619 is released. Due to the tension of the spring 3 567, the insulating support plate 563 moves upward. When the telescopic rod 5621 is extended to the longest, the sphere 3 566 extends into the middle of the arc plate 1 5610 and the arc plate 2 5612, and the conductive rod 5616 is pulled out of the groove 5615. The conductive plate 564 moves upward and fits tightly with the conductive rod 5616, ensuring a good electrical connection, so that the three conductive rods 5616 are connected as one, and then the U2, V2, and W2 ends of the motor body 1 are connected together, realizing the star connection of the motor body 1, and there is no need to install the connecting metal sheet on the terminal block by bolts in a time-consuming and labor-intensive manner, thereby saving labor costs.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A motor with improved slot fill rate, comprising a motor body (1), characterized in that: A stator (2) is arranged inside the motor body (1), the stator (2) comprising a stator core (21), notches (22) are evenly arranged inside the stator core (21), and stator windings (23) are inserted inside the notches (22); The stator (2) is provided with an extrusion assembly (3) for extruding the stator winding (23) in the slot (22), the extrusion assembly (3) comprising an insulating plate (31) and an extrusion portion (32), both ends of the insulating plate (31) are provided with mounting holes, the inner wall of the mounting hole being provided with a thread; Two extrusion parts (32) are symmetrically arranged, and the extrusion parts (32) include a support connecting plate (321) and a pull rod (323). One end of the support connecting plate (321) is connected to the outer surface of the stator core (21), and a through slot (322) is provided on the support connecting plate (321). The pull rod (323) movably passes through the through slot (322). One end of the pull rod (323) is fixedly connected to a positioning block (324). A threaded rod (325) is threadedly installed on the positioning block (324). The threaded rod (325) is threadedly connected to the mounting hole on the insulating plate (31). A spring (326) is arranged between the support connecting plate (321) and the positioning block (324). A through hole (327) is provided on the support connecting plate (321). A limiting hole (328) is provided on the pull rod (323). The through hole (327) is connected to the through slot (322). The support link plate (321) is connected to a limiting portion (329) for limiting the pull rod (323). The limiting portion (329) comprises a slip ring (3291). The slip ring (3291) is slidably mounted on the support link plate (321). A straight rod (3292) is fixedly connected to one side of the slip ring (3291). An end of the straight rod (3292) away from the slip ring (3291) is rotatably connected to a straight plate (3293) via a pin. A side of the straight plate (3293) close to the straight rod (3292) is fixedly connected to a limiting rod (3294). The limiting rod (3294) can movably pass through the through hole (327) and be plugged into and matched with the limiting hole (328).

2. The electric motor with improved slot fill rate according to claim 1, characterized in that: The top of the motor body (1) is connected to a wiring mechanism (5), the wiring mechanism (5) comprising a wiring box (51), the wiring box (51) being fixedly mounted on the top of the motor body (1), an insulating partition (52) being arranged inside the wiring box (51), three through holes (53) being evenly arranged on the insulating partition (52), a box cover (54) being rotatably connected to the top of the wiring box (51), a wiring portion (55) being connected to the upper surface of the insulating partition (52), and a switching portion (56) being arranged inside the wiring box (51).

3. The electric motor with improved slot fill rate according to claim 2, characterized in that: The wiring portion (55) comprises a movable plate (551), a rotating rod (553), a fixed plate (556) and a driving portion (558); three clamping plates (552) located inside the through hole (53) are fixedly connected to the bottom of the movable plate (551); the rotating rod (553) is rotatably installed in the wiring box (51); two connecting rods (554) are symmetrically connected to the outer circumference of the rotating rod (553); both ends of the connecting rod (554) are fixedly connected to a sphere (555); the fixed plate (556) is vertically fixed to the upper surface of the insulating partition (52); and a plurality of elastic plates (557) are arranged between the fixed plate (556) and the movable plate (551).

4. The electric motor with improved slot fill rate according to claim 3, characterized in that: Two driving parts (558) are symmetrically arranged, and the driving parts (558) include a connecting frame (5581) and a gear (5586). A second sphere (5582) is fixedly connected to the top of the connecting frame (5581), and a second spring (5583) is connected to the bottom of the connecting frame (5581). The lower end of the second spring (5583) is connected to the upper surface of the insulating partition (52). A telescopic rod (5584) is arranged between the bottom of the connecting frame (5581) and the upper surface of the insulating partition (52). A rack (5585) is fixedly connected to one side of the connecting frame (5581), and the gear (5586) is fixedly connected to the circumferential outer surface of the rotating rod (553). The rack (5585) is meshingly connected to the gear (5586).

5. The electric motor with improved slot fill rate according to claim 4, characterized in that: The switching portion (56) comprises a conductive hollow tube (561), an insulating support plate (563), a conductive plate (564), and an insulating mounting plate (5611); the conductive hollow tube (561) is open at the top and closed at the bottom; three conductive hollow tubes (561) are symmetrically arranged and the tops of the three conductive hollow tubes are fixedly connected to the lower surface of the insulating partition (52); the conductive hollow tube (561) is located directly below the through hole (53) and is connected to the through hole (53); and the pressing plate (552) is located inside the conductive hollow tube (561) and can be in close contact with the inner wall of the conductive hollow tube (561).

6. The electric motor with improved slot fill rate according to claim 5, characterized in that: One side of the conductive hollow tube (561) is connected to a soft wire (562) electrically connected to the internal winding of the motor body (1); the upper surface of the insulating support plate (563) is fixedly connected to a conductive plate (564); the upper surface of the insulating support plate (563) is symmetrically connected to two brackets (565); a spherical body (566) is rotatably mounted on the top of the bracket (565); and a spring (567) is provided between the lower surface of the insulating support plate (563) and the inner bottom surface of the junction box (51).

7. The electric motor with improved slot fill rate according to claim 6, characterized in that: An insulating connecting plate (568) is fixedly connected between two adjacent conductive hollow tubes (561); a spring four (569) is connected to one side of the insulating connecting plate (568); an end of the spring four (569) away from the insulating connecting plate (568) is connected to an arc plate one (5610); two arc plates two (5612) are symmetrically arranged on one side of the insulating mounting plate (5611); a spring five (5613) is arranged between the insulating mounting plate (5611) and the inner wall of the junction box (51); and the sphere three (566) can extend between the arc plate one (5610) and the arc plate two (5612).

8. The electric motor with improved slot fill rate according to claim 7, characterized in that: A conductive block (5614) is provided on one side of the conductive hollow tube (561), and a groove (5615) is provided on the conductive block (5614). Three conductive rods (5616) are symmetrically provided on one side of the insulating mounting plate (5611), and the conductive rods (5616) can be inserted into the groove (5615) and closely attached to the inner wall of the groove (5615). The conductive rods (5616) are connected to two soft wires (5617) electrically connected to the internal winding of the motor body (1).

9. The electric motor with improved slot fill rate according to claim 8, characterized in that: An insulating column (5618) is fixedly connected to the upper surface of the insulating support plate (563); the insulating column (5618) movably penetrates the insulating partition plate (52); and a lower pressing plate (5619) is provided on the top of the insulating column (5618).

10. The electric motor with improved slot fill rate according to claim 9, characterized in that: A second threaded rod (5620) is threadedly mounted on the lower pressing plate (5619), a threaded hole (559) is provided on the fixing plate (556), and the second threaded rod (5620) can be threadedly mounted in the threaded hole (559).

Images