Integrated direct-drive high-efficiency motor

Abstract

The present invention discloses an integrated direct-drive high-efficiency motor, comprising a motor housing, a motor main shaft, a stator core assembly, a rotor core, and a control circuit board. The motor main shaft is rotatably connected to the motor housing, the control circuit board is fixedly installed in the motor housing and is used to control the operation of the motor, the rotor core is fixedly connected to the motor main shaft, the stator core assembly is fixedly arranged in the motor housing and relatively arranged on the outside of the rotor core, the output end of the motor main shaft is connected to a bobbin for pulling yarn, and no intermediate transmission device such as a transmission belt is required for transmission, thereby reducing mechanical transmission parts, greatly improving output efficiency, reducing energy wear, and thus saving energy.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to an integrated direct-drive high-efficiency motor. Background Art

[0002] At present, the textile industry's textile mechanisms usually use motors as driving components to pull yarns. However, motors usually cannot drive directly but need to transfer kinetic energy through pulleys as intermediate transmission components for driving. Transmission through mechanical transmission mechanisms loses a lot of kinetic energy. This method has low mechanical efficiency and is extremely energy-consuming, which increases costs especially for small factories and workshops.

[0003] Although direct-drive motors exist in the existing technology, they cannot be directly applied to yarn traction in the textile field. In addition, the existing motors have complex structures, occupy a large space, and are inconvenient to install. Therefore, it is necessary to design an integrated direct-drive high-efficiency motor to solve the above technical problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention relates to an integrated direct-drive high-efficiency motor, which has a simple and reliable structure, effectively solves the above technical problems, and is suitable for popularization and use. To achieve the above purpose, the present invention is implemented through the following technical solutions:

[0005] An integrated direct-drive high-efficiency motor includes a motor housing, a motor main shaft, a stator core assembly, a rotor core, and a control circuit board. The motor main shaft is rotatably connected to the motor housing, the control circuit board is fixedly installed in the motor housing and is used to control the operation of the motor, the rotor core is fixedly connected to the motor main shaft, the stator core assembly is fixedly arranged in the motor housing and relatively arranged on the outside of the rotor core, and the output end of the motor main shaft is connected to a bobbin for pulling yarn.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the output end of the motor main shaft is fixedly connected to the bobbin fixing seat, the bobbin fixing seat is provided with two positioning holes symmetrical along the central axis, and a double-headed pin is fixed in each of the positioning holes, and the double-headed pin is used to fix the bobbin.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the motor housing includes a front end cover, an intermediate sleeve, and a rear end cover, the rear side of the front end cover is provided with a first limiting boss, the front side of the rear end cover is provided with a second limiting boss, the two ends of the intermediate sleeve are respectively sleeved on the first limiting boss and the second limiting boss, the front end cover is connected to the intermediate sleeve by a number of first bolts, and the rear end cover is connected to the intermediate sleeve by a number of second bolts.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the motor housing also includes a terminal block, the rear end of the intermediate sleeve is provided with a notch, the terminal block is provided with a slot adapted to the notch, the terminal block is engaged in the notch, one end of the terminal block is fitted with the rear end cover, the terminal block is provided with a through hole extending radially therethrough, and the through hole is used to introduce a wire.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a first bearing mounting hole is provided on the rear side of the front end cover, a first bearing is installed in the first bearing mounting hole, the motor main shaft is connected to the front end cover through the first bearing, a second bearing mounting hole is provided on the front side of the rear end cover, a second bearing is installed in the second bearing mounting hole, and the motor main shaft is connected to the rear end cover through the second bearing.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the motor main shaft includes a first shaft segment, a second shaft segment, a third shaft segment, a fourth shaft segment, and a fifth shaft segment arranged in sequence from front to back.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the front end of the first shaft segment is the output end, the rear end of the first shaft segment is connected to the first bearing, the front end face of the second shaft segment is in contact with the first bearing, the rotor core is sleeved on the second shaft segment, and a first retaining ring and a second retaining ring are respectively provided on both sides of the rotor core, the front end face of the third shaft segment is in contact with the second retaining ring, the fourth shaft segment is located in the second bearing mounting hole, the fifth shaft segment is connected to the second bearing, and the front end face of the second bearing is in contact with the fourth shaft segment.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the stator core assembly includes a first stator core, a second stator core, and a connecting sleeve, the first stator core includes a first annular body, a plurality of first winding parts are evenly spaced on the inner side of the first annular body, the second stator core includes a second annular body, a plurality of second winding parts are evenly spaced on the inner side of the second annular body, the first annular body and the second annular body are coaxially arranged, the end face of the first winding part is in contact with the end face of the second winding part, the intermediate sleeve is sleeved on the outside of the first winding part and the second winding part, and the two ends are respectively in contact with the first annular body and the second annular body, and the outer circumferential surface of the connecting sleeve is in contact with the intermediate sleeve.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the second annular body is provided with a plurality of radial protrusions, and the plurality of radial protrusions are evenly distributed along the circumference of the second annular body, each of the radial protrusions is provided with two wire limiting grooves, and each of the wire limiting grooves is provided with an axial protrusion, and the end face of the axial protrusion is flush with the end face of the second annular body.

[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: a plurality of pads are further provided on the end face of the second stator core, and a positioning column is provided in the middle of each pad, and the positioning column is used to cooperate with the socket on the control circuit board of the motor.

[0015] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0016] 1. The bobbin is fixedly connected to the motor spindle through the bobbin fixing seat. The bobbin is used to pull the yarn without the need for intermediate transmission devices such as transmission belts. This reduces the number of mechanical transmission parts, greatly improves the output efficiency, reduces energy wear, and thus saves energy.

[0017] 2. The motor housing is split, divided into a front cover, an intermediate sleeve, a rear cover, and a terminal block. The front cover and the rear cover are each connected to the intermediate sleeve by a number of bolts. The terminal block is engaged in the gap between the intermediate sleeve and the rear cover, and a wire can pass through. The structure is stable, and the bolt connection method makes the assembly and disassembly of the motor housing more convenient. The motor can be easily maintained, cleaned, and repaired later. The motor housing has a simple structure, is easy to manufacture, is easy to form, and has a low cost.

[0018] 3. A cam is provided on the rear side of the rear end cover of the motor, and an external thread is provided on the outer peripheral surface of the cam. The cam is used to connect the motor to the workbench. The motor can be conveniently fixed on the workbench by cooperating with the cam with the external thread and the workbench. The fixation is relatively stable and not easy to shake, which ensures the stability of movement and is convenient for disassembly and assembly. In addition, due to the provision of the cam, the depth of the second bearing mounting hole of the rear end cover is extended to accommodate a longer motor spindle, so that the length of the motor spindle in the motor housing can be lengthened, thereby improving stability. Moreover, the cam is connected to the workbench and does not take up additional space after installation, thus saving space.

[0019] 4. A wire limiting groove is provided on the second annular body of the second stator core, and an axial protrusion is provided in the wire limiting groove. The wires connected to the control circuit board are restricted in the wire limiting groove by the axial protrusion. The wiring layout of the wires inside the motor is more standardized, the internal circuits are clearer, and the crossing and confusion of the wires are avoided.

[0020] 5. The motor has ingenious structural settings, is easy to assemble, has a compact structure, a small size, and a low cost, and can maintain good stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of explosion decomposition;

[0023] Figure 3 is a schematic side cross-sectional view;

[0024] Figure 4 is a schematic diagram of the stator core assembly;

[0025] Figure 5 It is a schematic diagram of the motor spindle;

[0026] Figure 6 This is a schematic diagram of the rear end cover;

[0027] Figure 7 It is a schematic diagram of the front end cover;

[0028] Figure 8 is a schematic diagram of the second stator core;

[0029] Figure 9 This is a schematic diagram of the bobbin installation;

[0030] Figure 10 Schematic diagram of the yarn tube. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments. However, the specific implementation methods and embodiments described below are only for illustrative purposes and are not intended to limit the present invention.

[0032] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The directions or positional relationships shown are only for the convenience of describing the present invention, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0033] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0034] like Figure 1-9As shown, the present invention relates to an integrated direct-drive high-efficiency motor, comprising a motor housing 1, a motor main shaft 2, a stator core assembly 3, a rotor core 4, and a control circuit board 5. The motor main shaft 2 is rotatably connected to the motor housing 1, and the control circuit board 5 is fixedly installed in the motor housing 1 and is used to control the operation of the motor. The rotor core 4 is fixedly connected to the motor main shaft 2, and the stator core assembly 3 is fixed in the motor housing 1 and is relatively arranged on the outside of the rotor core 4. The output end of the motor main shaft 2 is fixedly connected to a bobbin fixing seat 6, and the bobbin fixing seat 6 is provided with two positioning holes 61 symmetrical along the central axis. A double-headed pin shaft 62 is fixed in each of the positioning holes 61, and one end of the double-headed pin shaft 62 is engaged with the positioning hole 61, and the other end is engaged with the assembly hole on the bobbin 7. The bobbin 7 is fixedly connected to the motor main shaft 2 through the bobbin fixing seat 6. The bobbin 7 is used to pull the yarn and does not need to be transmitted through an intermediate transmission device such as a transmission belt, thereby reducing mechanical transmission parts, greatly improving output efficiency, reducing energy wear, and thus saving energy.

[0035] Specifically, the motor housing 1 includes a front end cover 11, an intermediate sleeve 12, and a rear end cover 13. The rear side of the front end cover 11 is provided with a first limiting boss 111, and the front side of the rear end cover 13 is provided with a second limiting boss 131. The two ends of the intermediate sleeve 12 are respectively sleeved on the first limiting boss 111 and the second limiting boss 131. The front end cover 11 is connected to the intermediate sleeve 12 through a number of first bolts 15, and the rear end cover 13 is connected to the intermediate sleeve 12 through a number of second bolts 16.

[0036] Furthermore, the front end cover 11 is provided with a plurality of first step holes 112 uniformly distributed along the circumferential direction, and the front end surface of the intermediate sleeve 12 is provided with a plurality of first threaded holes corresponding to the first step holes 112. The first bolts 15 pass through the first step holes 112 and are connected to the first threaded holes. It is worth mentioning that the number of the first step holes 112 is at least three, and in this embodiment, the number of the first step holes 112 is four, and the number of the first bolts 15 and the first threaded holes is equal to the number of the first step holes 112.

[0037] Furthermore, the rear end cover 13 is provided with a plurality of second stepped holes 132 evenly spaced along the circumferential direction. The rear end surface of the intermediate sleeve 12 is provided with a plurality of second threaded holes 122 corresponding to the second stepped holes 132. The second bolts 16 pass through the second stepped holes 132 and are connected to the second threaded holes 122. It is worth mentioning that the number of second stepped holes 132 is at least three, and in this embodiment, the number of second stepped holes 132 is four. The number of second bolts 16 and second threaded holes 122 is equal to the number of second stepped holes 132. The motor housing 1 is configured as a split type. The front end cover 11 and the rear end cover 13 are stably connected to the intermediate sleeve 12 respectively through a plurality of bolts, ensuring structural stability. The bolted connection method makes the assembly and disassembly of the motor housing 1 relatively convenient, and subsequent maintenance, cleaning, and repair of the motor can be convenient.

[0038] Furthermore, a first bearing mounting hole 113 is provided on the rear side of the front end cover 11, and a first bearing 114 is installed in the first bearing mounting hole 113. The motor main shaft 2 is connected to the front end cover 11 through the first bearing 114. A second bearing mounting hole 133 is provided on the front side of the rear end cover 13, and a second bearing 134 is installed in the second bearing mounting hole 133. The motor main shaft 2 is connected to the rear end cover 13 through the second bearing 134. The setting of the first bearing 114 and the second bearing 134 can greatly reduce the operating resistance, and at the same time, the vibration and noise of the motor operation are also greatly reduced, ensuring that the operation process is smooth, reliable and noiseless.

[0039] Furthermore, a convex shaft 135 is provided on the rear side of the rear end cover 13, and an external thread is provided on the outer peripheral surface of the convex shaft 135. The convex shaft 135 is used to connect the motor to the workbench. The motor can be conveniently fixed on the workbench by cooperating with the convex shaft 135 with the external thread and the workbench. The fixation is relatively stable and not easy to shake, which ensures the stability of movement while facilitating disassembly and assembly.

[0040] Furthermore, a small hole 136 communicating with the second bearing mounting hole 133 is provided on the end face of the convex shaft 135 . The provision of the small hole 136 facilitates oil injection for lubrication, and the working state of the main shaft inside the motor can also be observed through the small hole 136 .

[0041] Furthermore, the motor housing 1 also includes a terminal block 14, a notch 123 is provided at the rear end of the intermediate sleeve 12, the shape of the notch 123 can be adaptively changed, the terminal block 14 is provided with a card slot adapted to the notch 123, the terminal block 14 is engaged in the notch 123, the bottom surface of the terminal block 14 is in contact with the rear end cover 13, the terminal block 14 is provided with a through hole 141 extending radially therethrough, the through hole 141 is used to introduce a wire, and the terminal block 14 is fixed by a card engagement to facilitate assembly.

[0042] Furthermore, the motor main shaft 2 includes a first shaft segment 21, a second shaft segment 22, a third shaft segment 23, a fourth shaft segment 24, and a fifth shaft segment 25 arranged in sequence. In this embodiment, the length of the first shaft segment 21 is 280 mm, the length of the second shaft segment 22 is 48 mm, the length of the third shaft segment 23 is 5 mm, the length of the fourth shaft segment 24 is 48 mm, and the length of the fifth shaft segment 25 is 8 mm.

[0043] Furthermore, the front end of the first shaft segment 21 is the output end, the rear end of the first shaft segment 21 is connected to the first bearing 114, the front end surface of the second shaft segment 22 is in contact with the first bearing 114, the rotor core 4 is sleeved on the second shaft segment 22, and the first retaining ring 41 and the second retaining ring 42 are provided on both sides of the rotor core 4, the front end surface of the third shaft segment 23 is in contact with the second retaining ring 42, the fourth shaft segment 24 is located in the second bearing mounting hole 133, the fifth shaft segment 25 is connected to the second bearing 134, the front end surface of the second bearing 134 is in contact with the fourth shaft segment 24, the diameter of the first shaft segment 21 is smaller than that of the second shaft segment 22, the diameter of the second shaft segment 22 is smaller than that of the third shaft segment 23, the diameter of the fourth shaft segment 24 is the same as that of the first shaft segment 21, and the fifth shaft segment 25 is connected to the second bearing 134. The diameter of the fifth shaft segment 25 is smaller than that of the fourth shaft segment 24. Specifically, in this embodiment, the diameters of the first shaft segment 21 and the fourth shaft segment 24 are both 15 mm, the diameter of the second shaft segment 22 is 18 mm, the distance between the third shaft segment 23 is 20 mm, and the diameter of the fifth shaft segment 25 is 10 mm. Different from the traditional motor, since the front end of the first shaft segment 21 is the output end and needs to be connected to the bobbin 7 for pulling the yarn, the length of the first shaft segment 21 is longer. In order to ensure the stability of the motor operation, it is necessary to ensure that the fourth shaft segment 24 has a certain length. Since the rear end cover 13 has a convex shaft 135, the length of its second bearing mounting hole 133 is extended, so that it can accommodate the longer fourth shaft segment 24. The overall structure is compact, which reduces the overall volume of the motor while ensuring the stability of the motor spindle during operation.

[0044] Furthermore, the stator core assembly 3 includes a first stator core 31, a second stator core 32, and a connecting sleeve 33. The first stator core 31 and the second stator core 32 are both integrally formed and have a stable structure. The first stator core 31 includes a first annular body 311, and a plurality of first winding portions 312 are evenly spaced on the inner side of the first annular body 311. The second stator core 32 includes a second annular body 321, and a plurality of second winding portions 322 are evenly spaced on the inner side of the second annular body 321. The first winding part 312 and the second winding part 322 are both used for winding the stator coil. The first annular body 311 and the second annular body 321 are coaxially arranged. The end face of the first winding part 312 is in contact with the end face of the second winding part 322. The intermediate sleeve 12 is sleeved on the outside of the first winding part 312 and the second winding part 322, and the two ends are respectively in contact with the first annular body 311 and the second annular body 321. The outer circumferential surface of the connecting sleeve 33 is in contact with the intermediate sleeve 12. The structure is compact and stable, with mutual limitation, and easy assembly.

[0045] Furthermore, the second annular body 321 is provided with three radial protrusions 3211, and the radial protrusions 3211 are fan-shaped. The three radial protrusions 3211 are evenly distributed along the circumference of the second annular body 321, and each of the radial protrusions 3211 is provided with two wire limiting grooves 3212. Each of the wire limiting grooves 3212 is provided with an axial protrusion 3213, and the end face of the axial protrusion 3213 is flush with the end face of the second annular body 321. The wires connected to the control circuit board 5 are restricted in the wire limiting groove 3212 by the axial protrusions 3213, so the wiring layout is more standardized and the internal lines are clearer.

[0046] Furthermore, three pads 324 are provided on the end face of the second stator core 32. The three pads 324 are evenly spaced along the circumferential direction. The three pads 324 correspond one-to-one to the three radial protrusions 3211. The pads 324 are located in the middle of the radial protrusions 3211. A positioning column 325 is provided in the middle of each pad 324. The positioning column 325 is used to cooperate with the socket 51 on the control circuit board 5 of the motor. The control circuit board 5 is sleeved on the outside of the third shaft segment 23 and is fixedly connected to the second stator core 32 through the cooperation between the socket 51 and the positioning column 325. The control circuit board 5 is accurately positioned by the positioning column 325 and is easy to install.

[0047] It is worth noting that the technical features such as the control circuit board and rotor core involved in the patent application of this invention should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional means in the field and should not be regarded as the inventive point of this patent. This patent will not be further elaborated.

[0048] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made by technicians in the relevant technical field based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. Integrated direct-drive high-efficiency motor, characterized by: The motor comprises a motor housing, a motor main shaft, a stator core assembly, a rotor core, and a control circuit board. The motor main shaft is rotatably connected to the motor housing. The control circuit board is fixedly mounted in the motor housing and is used to control the operation of the motor. The rotor core is fixedly connected to the motor main shaft. The stator core assembly is fixedly mounted in the motor housing and is relatively arranged on the outside of the rotor core. The output end of the motor main shaft is connected to a bobbin used to pull the yarn. The output end of the motor main shaft is fixedly connected to a bobbin fixing seat, and the bobbin fixing seat is provided with two positioning holes symmetrical along the central axis, and a double-headed pin is fixed in each of the positioning holes, and the double-headed pin is used to fix the bobbin; The motor housing includes a front cover, an intermediate sleeve, and a rear cover. The rear side of the front cover is provided with a first limiting boss, the front side of the rear cover is provided with a second limiting boss, the two ends of the intermediate sleeve are respectively sleeved on the first limiting boss and the second limiting boss, the front cover is connected to the intermediate sleeve by a plurality of first bolts, and the rear cover is connected to the intermediate sleeve by a plurality of second bolts; A first bearing mounting hole is provided on the rear side of the front end cover, a first bearing is installed in the first bearing mounting hole, and the motor main shaft is connected to the front end cover through the first bearing. A second bearing mounting hole is provided on the front side of the rear end cover, a second bearing is installed in the second bearing mounting hole, and the motor main shaft is connected to the rear end cover through the second bearing. The motor main shaft includes a first shaft segment, a second shaft segment, a third shaft segment, a fourth shaft segment, and a fifth shaft segment arranged in sequence from front to back, the front end of the first shaft segment is the output end, the rear end of the first shaft segment is connected to the first bearing, the front end surface of the second shaft segment is in contact with the first bearing, the rotor core is sleeved on the second shaft segment, a first retaining ring and a second retaining ring are respectively provided on both sides of the rotor core, the front end surface of the third shaft segment is in contact with the second retaining ring, the fourth shaft segment is located in the second bearing mounting hole, the fifth shaft segment is connected to the second bearing, and the front end surface of the second bearing is in contact with the fourth shaft segment; The stator core assembly includes a first stator core, a second stator core, and a connecting sleeve. The first stator core includes a first annular body, a plurality of first winding portions are evenly spaced on the inner side of the first annular body. The second stator core includes a second annular body, a plurality of second winding portions are evenly spaced on the inner side of the second annular body. The first annular body and the second annular body are coaxially arranged, and the end surface of the first winding portion is in contact with the end surface of the second winding portion. The intermediate sleeve is sleeved on the outer sides of the first winding portion and the second winding portion, and its two ends are respectively in contact with the first annular body and the second annular body. The outer circumferential surface of the connecting sleeve is in contact with the intermediate sleeve. The second annular body is provided with a plurality of radial protrusions, which are evenly distributed along the circumference of the second annular body. Each of the radial protrusions is provided with two wire limiting grooves, and each of the wire limiting grooves is provided with an axial protrusion, and the end face of the axial protrusion is flush with the end face of the second annular body.

2. The integrated direct-drive high-efficiency motor according to claim 1, characterized in that: The motor housing also includes a terminal block, a notch is provided at the rear end of the intermediate sleeve, the terminal block is provided with a slot adapted to the notch, the terminal block is engaged in the notch, one end of the terminal block is fitted with the rear end cover, the terminal block is provided with a through hole extending radially therethrough, and the through hole is used to introduce a wire.

3. The integrated direct-drive high-efficiency motor according to claim 1, characterized in that: A plurality of pads are further provided on the end surface of the second stator core, and a positioning column is provided in the middle of each pad, and the positioning column is used to cooperate with the socket on the control circuit board of the motor.

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