Improved rotor assembly

Abstract

The improved rotor assembly comprises a shaft body, a connecting sleeve, a supporting column, a pinch plate and an iron core, the connecting sleeve and the pinch plate are installed on the shaft body, the supporting column is fixedly connected with the connecting sleeve, the supporting column is arranged on the pinch plate in a penetrating mode, the iron core is connected with the pinch plate and the connecting sleeve in a clamping mode, the shaft body is provided with an air inlet hole, and the air inlet hole is communicated with the pinch plate. The shaft body is provided with an air conveying hole communicated with the air inlet hole, the connecting sleeve is provided with a communicating hole communicated with the air conveying hole, the supporting column is provided with an air supply hole communicated with the communicating hole, the buckle plate is provided with an exhaust hole communicated with the air supply hole, and the exhaust hole extends in the direction away from the supporting column. The end, away from the supporting column, of the exhaust hole communicates with the peripheral face of the buckle plate. The beneficial effects of the utility model are that the structure stability between the shaft body and the iron core can be effectively improved, and the advantage of good structure stability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotors, in particular to an improved rotor assembly. Background Art

[0002] A motor consists of two parts: a rotor and a stator. The rotor is the rotating part of the motor. The rotor includes a rotor shaft, an iron core, and permanent magnets. By generating an electromagnetic field around the rotor, the permanent magnets rotate within the electromagnetic field. This permanent magnet drives the iron core and rotor shaft, thus generating power output through the rotor shaft.

[0003] The Chinese invention patent application document with publication number CN118487424A discloses a rotating shaft, including an input flow channel, multiple output flow channels, multiple guide flow channels and a closed space. The input flow channel extends axially along the rotating shaft, and the input end of the input flow channel is located at one side end of the rotating shaft. The output flow channel extends radially along the rotating shaft, and the output end of the output flow channel is located on the outer peripheral surface of the rotating shaft. The guide flow channel extends axially, and the multiple guide flow channels are connected in parallel with each other. The input flow channel is connected to the multiple output flow channels via the multiple guide flow channels, so that the cooling fluid flowing into the input flow channel can flow out from the multiple output flow channels under the guidance of the multiple guide flow channels. The closed space is located between different guide flow channels and is closed relative to the input flow channel, the multiple output flow channels and the multiple guide flow channels. In this way, fluid pressure can be established quickly, and the rotating shaft can have lower cost and weight when working, which is conducive to the cooling fluid to fully cool and lubricate the target object.

[0004] As motor performance continues to improve, higher requirements are placed on the structural stability of the motor's rotor shaft. The aforementioned shaft has multiple internal gas flow channels, which significantly impact the rotor's structural strength. Existing technologies suffer from poor structural strength. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide an improved rotor assembly, which includes a shaft, a connecting sleeve, a support column, a buckle plate and an iron core. The improved rotor assembly has the advantage of good structural stability.

[0006] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0007] An improved rotor assembly includes a shaft body, a connecting sleeve, a support column, a gusset plate and an iron core, the connecting sleeve and the gusset plate are installed on the shaft body, the support column is fixedly connected to the connecting sleeve, the support column is passed through the gusset plate, and the iron core is respectively engaged with the gusset plate and the connecting sleeve, the shaft body is provided with an air inlet hole, the shaft body is provided with an air supply hole connected to the air inlet hole, the connecting sleeve is provided with a connecting hole connected to the air supply hole, the support column is provided with an air supply hole connected to the connecting hole, the gusset plate is provided with an exhaust hole connected to the air supply hole, the exhaust hole extends in a direction away from the support column, and the end of the exhaust hole away from the support column is connected to the outer peripheral surface of the gusset plate.

[0008] Through such an arrangement, the structural stability between the shaft and the iron core can be effectively improved, thereby achieving the advantage of better structural stability.

[0009] Preferably, the gas transmission hole and the communication hole extend along the radial direction of the shaft.

[0010] Through such a setting, the air circulation speed is increased, thereby improving the heat dissipation effect of the shaft.

[0011] Preferably, the connecting hole passes through the inner wall of the connecting sleeve to the outer wall of the connecting sleeve, and the connecting sleeve is threadedly connected with a screw plug, which blocks the end of the connecting hole away from the air supply hole, and the air supply hole is connected to the middle of the connecting hole.

[0012] This arrangement facilitates the processing of connecting holes.

[0013] Preferably, the shaft body is provided with filter cotton located in the air inlet hole.

[0014] Through such a setting, reliability can be improved.

[0015] Preferably, the filter cotton is provided with a support frame, the support frame is clamped with the shaft, the filter cotton is located in the support frame, and both ends of the support frame are provided with ventilation holes connected to the air inlet.

[0016] Through such a setting, it is ensured that the filter cotton can fully filter the air in the air inlet.

[0017] Preferably, the shaft body is provided with a clamping ring located in the air inlet, the outer wall of the clamping ring is threadedly connected to the shaft body, the clamping ring is clamped to the end of the support frame away from the air supply hole, and the clamping ring is provided with an inner hole connected to the air vent.

[0018] Through such an arrangement, the support frame and the filter cotton are fixed.

[0019] Preferably, the cross section of the inner hole is a regular hexagon.

[0020] This arrangement facilitates the rotation of the driving retaining ring.

[0021] Preferably, the outer peripheral surface of the shaft body is provided with a flat portion, and the flat portion is circumferentially engaged with the iron core.

[0022] Through such an arrangement, the function of the iron core driving the shaft to rotate synchronously is achieved.

[0023] Preferably, a plurality of the support columns and the flattening positions are provided, and the support columns are located on the radial side of the flattening position facing the shaft body, and the plurality of support columns and the plurality of flattening positions correspond one to one.

[0024] Through such a setting, the structural reliability can be improved.

[0025] Preferably, the plurality of flattened portions are evenly distributed circumferentially on the outer peripheral surface of the shaft.

[0026] This arrangement improves the stability between the iron core and the shaft.

[0027] Compared with the existing technology, the present invention has achieved beneficial technical effects:

[0028] Install the iron core on the shaft body, and pass the support column through the iron core. Provide support force to both ends of the support column through the connecting sleeve and the buckle plate, and then provide support force to the iron core through the support column, so as to effectively improve the structural stability between the shaft body and the iron core and achieve the advantage of better structural stability.

[0029] When the shaft drives the gusset plate to rotate, the gas in the exhaust hole flows away from the support column due to centrifugal force. At the same time, because the gusset plate pushes the air in the exhaust hole to move during rotation, the relative speed of the air at the end of the exhaust hole away from the support column is greater and the pressure is lower. The pressure difference further encourages the air in the exhaust hole to flow away from the support column. During the flow of air in the exhaust hole, the air in the air inlet hole is sucked in through the air supply hole, connecting hole, and air transmission hole. As a result, air continues to circulate in the shaft and support column during the rotation of the shaft. The flowing air absorbs heat and is then discharged, which can reduce the temperature of the shaft, support column, and iron core, thereby achieving the effect of controlling the temperature of the shaft and iron core, and preventing the shaft and iron core from overheating during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Fig. 1 This is a schematic structural diagram of an improved rotor assembly in an embodiment of the present utility model;

[0031] Fig. 2 This is a cross-sectional view of an improved rotor assembly in an embodiment of the present utility model;

[0032] Fig. 3 This is a schematic structural diagram of the filter cotton, support frame and clamping ring in an embodiment of the present utility model;

[0033] Fig. 4 is the structural schematic view of the shaft body, the flat position and the support column in the embodiment of the utility model.

[0034] Among them, the technical features referred by each sign are as follows:

[0035] 11, shaft body; 12, iron core; 13, flat position; 21, connecting sleeve; 22, support column; 23, buckle plate; 31, air inlet hole; 32, gas delivery hole; 33, communication hole; 34, gas delivery hole; 35, exhaust hole; 41, screw plug; 42, filter cotton; 43, support frame; 44, snap ring; 45, inner hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further detailed with examples, but the scope of protection of the utility model is not limited to the following specific examples.

[0037] Reference Figs. 1 to 4 An improved rotor assembly, including shaft body 11, connecting sleeve 21, support column 22, buckle plate 23 and iron core 12, connecting sleeve 21 and buckle plate 23 are installed on shaft body 11, support column 22 is fixedly connected with connecting sleeve 21, support column 22 is provided in buckle plate 23, iron core 12 is respectively clamped with buckle plate 23 and connecting sleeve 21, and magnet is installed in iron core 12. The outer circumferential surface of shaft body 11 is provided with flat position 13, and flat position 13 is circumferentially clamped with iron core 12. Through the circumferential clamping of flat position 13 and iron core 12, the function of synchronous rotation of iron core 12 driving shaft body 11 is realized. Support column 22 and flat position 13 are both provided with multiple, support column 22 is located at the side of flat position 13 towards the radial direction of shaft body 11, and multiple support columns 22 and multiple flat positions 13 are one-to-one corresponding. Multiple flat positions 13 are circumferentially and evenly distributed on the outer circumferential surface of shaft body 11. Multiple flat positions 13 are circumferentially and evenly distributed, and shaft body 11 is more balanced in force at multiple flat positions 13, which plays a role in improving the stability between iron core 12 and shaft body 11.

[0038] The shaft body 11 is provided with an air inlet 31, an air delivery hole 32 communicating with the air inlet 31, a connecting sleeve 21 is provided with a connecting hole 33 communicating with the air delivery hole 32, a support column 22 is provided with an air delivery hole 34 communicating with the connecting hole 33, and a pinch plate 23 is provided with an exhaust hole 35 communicating with the air delivery hole 34. The exhaust hole 35 extends away from the support column 22, and the end of the exhaust hole 35 away from the support column 22 is connected to the outer circumferential surface of the pinch plate 23. The air delivery hole 32 and the connecting hole 33 extend radially along the shaft body 11. The connecting hole 33 extends from the inner wall of the connecting sleeve 21 to the outer wall of the connecting sleeve 21. A screw plug 41 is threadedly connected to the connecting sleeve 21, which blocks the end of the connecting hole 33 away from the air delivery hole 32. The air delivery hole 34 is connected to the middle of the connecting hole 33. The connecting hole 33 extends from the inner wall of the connecting sleeve 21 to the outer wall of the connecting sleeve 21. When machining the connecting hole 33, the connecting hole 33 can be machined directly from the outer wall of the connecting sleeve 21. The outer wall of the connecting sleeve 21 has a larger movable space than the inner wall, thus facilitating machining of the connecting hole 33. A screw plug 41 blocks the end of the connecting hole 33 away from the air supply hole 34, ensuring that air in the air inlet 31 can flow toward the air supply hole 34, thereby ensuring the heat dissipation effect of the air on the shaft body 11.

[0039] The shaft body 11 is provided with a cotton filter 42 positioned within the air inlet 31. The cotton filter 42 filters the air entering the air inlet 31, preventing dust accumulation and blockage within the air inlet 31, thereby improving reliability. The cotton filter 42 is provided with a support frame 43 that is secured to the shaft body 11. The cotton filter 42 is positioned within the support frame 43, and vents are provided at both ends of the support frame 43, communicating with the air inlet 31. The support frame 43 supports the cotton filter 42, maintaining its structural stability and preventing air within the air inlet 31 from entering the air delivery hole 32 without being filtered by the cotton filter 42. This ensures that the cotton filter 42 can fully filter the air within the air inlet 31. The shaft body 11 is provided with a retaining ring 44 positioned within the air inlet 31. The outer wall of the retaining ring 44 is threadedly connected to the shaft body 11. The retaining ring 44 is secured to the end of the support frame 43 away from the air delivery hole 32, and the retaining ring 44 has an inner hole 45 communicating with the vents. Tighten the snap ring 44 until it presses against the support frame 43, securing the ends of the support frame 43 to the shaft 11 and the snap ring 44, respectively, securing the support frame 43 and the filter cotton 42. The inner hole 45 has a regular hexagonal cross-section. Inserting an Allen wrench into the regular hexagonal inner hole 45 allows the snap ring 44 to rotate on the shaft 11, facilitating the rotation of the snap ring 44.

[0040] This embodiment has the following advantages:

[0041] The iron core 12 is installed on the shaft body 11, and the support column 22 is passed through the iron core 12. The connecting sleeve 21 and the buckle plate 23 provide support force to both ends of the support column 22, and then the support column 22 provides support force to the iron core 12, thereby effectively improving the structural stability between the shaft body 11 and the iron core 12, and achieving the advantage of better structural stability.

[0042] When the shaft 11 drives the pinch plate 23 to rotate, the gas within the exhaust hole 35 flows away from the support column 22 due to centrifugal force. At the same time, because the pinch plate 23 pushes the air within the exhaust hole 35 during rotation, the air at the end of the exhaust hole 35 away from the support column 22 experiences a greater relative velocity and a lower pressure. This pressure difference further encourages the air within the exhaust hole 35 to flow away from the support column 22. During this flow, the air within the exhaust hole 35 draws in the air within the air inlet 31 through the air supply hole 34, the connecting hole 33, and the air delivery hole 32. This ensures that air continuously circulates within the shaft 11 and the support column 22 during the rotation of the shaft 11. The flowing air absorbs heat and is then discharged, reducing the temperature of the shaft 11, the support column 22, and the iron core 12, thereby controlling the temperature of the shaft 11 and the iron core 12 and preventing the shaft 11 and the iron core 12 from overheating during motor operation.

[0043] When the shaft 11 rotates, the gas in the air supply hole 32 flows away from the air inlet 31 due to centrifugal phenomenon, further prompting the air in the air inlet 31 to flow away from the exhaust hole 35, increasing the air circulation speed and further improving the heat dissipation effect of the shaft 11.

[0044] The iron core 12 and the shaft 11 are connected by a plurality of support columns 22 and a plurality of flattened portions 13, thereby improving the structural stability between the iron core 12 and the shaft 11. The support columns 22 are located on one side of the flattened portions 13 along the radial direction of the shaft 11. Thus, the support columns 22 can provide a supporting force to the iron core 12 at the flattened portions 13 toward the flattened portions 13, preventing the iron core 12 at the flattened portions 13 from being deformed by the force and slipping off the flattened portions 13, thereby improving the structural reliability.

[0045] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation on the present invention.

Claims

1. An improved rotor assembly, characterized in that: The invention comprises a shaft body (11), a connecting sleeve (21), a support column (22), a gusset plate (23) and an iron core (12), wherein the connecting sleeve (21) and the gusset plate (23) are mounted on the shaft body (11), the support column (22) is fixedly connected to the connecting sleeve (21), the support column (22) is passed through the gusset plate (23), the iron core (12) is respectively connected to the gusset plate (23) and the connecting sleeve (21), the shaft body (11) is provided with an air inlet hole (31), and the shaft body (11) is provided with an air inlet hole (31). The connecting sleeve (21) is provided with a communicating hole (33) communicating with the gas delivery hole (32), the supporting column (22) is provided with an air supply hole (34) communicating with the communicating hole (33), the pinch plate (23) is provided with an exhaust hole (35) communicating with the air supply hole (34), the exhaust hole (35) extends in a direction away from the supporting column (22), and one end of the exhaust hole (35) away from the supporting column (22) is connected to the outer peripheral surface of the pinch plate (23).

2. The improved rotor assembly according to claim 1, characterized in that: The gas delivery hole (32) and the communication hole (33) extend along the radial direction of the shaft body (11).

3. The improved rotor assembly according to claim 1, characterized in that: The communicating hole (33) extends from the inner wall of the connecting sleeve (21) to the outer wall of the connecting sleeve (21). The connecting sleeve (21) is threadedly connected to a screw plug (41). The screw plug (41) blocks the end of the communicating hole (33) away from the air delivery hole (32). The air delivery hole (34) is connected to the middle of the communicating hole (33).

4. The improved rotor assembly according to claim 1, characterized in that: The shaft (11) is provided with filter cotton (42) located in the air inlet hole (31).

5. The improved rotor assembly according to claim 4, characterized in that: The filter cotton (42) is provided with a support frame (43), the support frame (43) is clamped with the shaft (11), the filter cotton (42) is located in the support frame (43), and ventilation holes communicating with the air inlet (31) are provided at both ends of the support frame (43).

6. The improved rotor assembly according to claim 5, characterized in that: The shaft body (11) is provided with a snap ring (44) located in the air inlet hole (31); the outer wall of the snap ring (44) is threadedly connected to the shaft body (11); the snap ring (44) is snap-connected to an end of the support frame (43) away from the air delivery hole (32); and an inner hole (45) communicating with the air vent is provided in the snap ring (44).

7. The improved rotor assembly according to claim 6, characterized in that: The cross section of the inner hole (45) is a regular hexagon.

8. The improved rotor assembly according to claim 1, characterized in that: The outer peripheral surface of the shaft body (11) is provided with a flat portion (13), and the flat portion (13) is circumferentially clamped with the iron core (12).

9. The improved rotor assembly according to claim 8, characterized in that: A plurality of the support columns (22) and the flat positions (13) are provided. The support columns (22) are located on the radial side of the flat positions (13) facing the shaft (11). The plurality of support columns (22) and the plurality of flat positions (13) correspond one to one.

10. The improved rotor assembly according to claim 8, characterized in that: The plurality of flattened portions (13) are evenly distributed on the outer peripheral surface of the shaft body (11).

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