Motor rotating shaft and motor
By using a detachable motor shaft design, threaded connection and cavity cooling structure, the problems of high material cost and high energy consumption of existing motor shafts are solved, achieving lightweight and efficient heat dissipation, and improving motor performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-27
AI Technical Summary
Existing motor shaft designs are mostly one-piece or welded structures, resulting in high material costs, heavy weight, high energy consumption, and limited performance.
It adopts a detachable first and second shaft design, utilizing threaded and mechanical connections, combined with the cooling medium flow space of the internal cavity and the liquid distribution shaft, to achieve the combination of different materials, reduce material costs and improve heat dissipation efficiency.
This achieves lightweighting of the motor shaft and reduction of energy consumption, while improving the motor's heat dissipation capacity and overall performance, and reducing maintenance and material costs.
Smart Images
Figure CN224054027U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor rotating shaft technical field, especially a motor rotating shaft and motor. BACKGROUND
[0002] At present, the motor rotating shafts on the market are mostly designed in an integrated structure, or are assembled by welding different structural parts of the motor rotating shaft. These motor rotating shafts are usually made of a whole piece or the same type of material. Although such a design ensures the strength and stability of the motor rotating shaft to a certain extent, high-strength materials are often accompanied by high costs, and the weight is relatively heavy. This not only increases the manufacturing cost of the motor, but also causes a large energy consumption burden on the motor due to the heavy motor rotating shaft, resulting in a decrease in the power density of the motor and affecting the overall performance and efficiency of the motor. SUMMARY
[0003] In order to solve the technical problems of the integrated motor rotating shaft or the welded combined motor rotating shaft in the prior art, which have limitations in the use of materials, the weight of the rotating shaft itself is heavy, and the manufacturing cost of the motor is high, the energy consumption is large, and the performance is limited, the utility model provides a motor rotating shaft and motor, which solves the above technical problems.
[0004] In order to solve the above technical problems, the utility model provides a motor rotating shaft, which comprises:
[0005] A first shaft body, a liquid inlet is formed on the first shaft body;
[0006] A liquid distribution shaft, the liquid distribution shaft is installed on the first shaft body, a liquid channel is arranged in the liquid distribution shaft, the liquid channel is communicated with the liquid inlet, and a liquid distribution opening communicated with the liquid channel is formed on the liquid distribution shaft;
[0007] A second shaft body, a cavity is formed in the second shaft body, one end of the second shaft body is detachably connected with the first shaft body, and when the first shaft body and the second shaft body are connected together, the liquid distribution shaft extends into the cavity, so that the liquid distribution opening is located in the cavity.
[0008] According to one embodiment of the utility model, the first shaft body is provided with a rotary variable installation part at one end away from the liquid distribution shaft.
[0009] According to one embodiment of the utility model, the liquid distribution shaft is threadedly connected with the first shaft body.
[0010] According to one embodiment of the utility model, the second shaft body is further provided with a spline installation part at one side away from the first shaft body, a plug is arranged in the spline installation part, and the plug is axially interference-fitted with the spline installation part.
[0011] According to one embodiment of the utility model, the groove is arranged on the plug block, and a sealing ring is arranged between the groove and the spline mounting portion.
[0012] According to one embodiment of the utility model, the first shaft body is provided with a first mounting table, the second shaft body is provided with a second mounting table corresponding to the first mounting table, and the first mounting table and the second mounting table are fastened and connected through screws.
[0013] According to one embodiment of the utility model, the first mounting table is sleeved on the outer surface of the second mounting table, and the first mounting table and the second mounting table are fastened and connected through axial screws.
[0014] According to one embodiment of the utility model, the first mounting table and the second mounting table are in hot-jacket cooperation.
[0015] According to one embodiment of the utility model, the side wall of the second shaft body is provided with a liquid outlet communicating with the cavity.
[0016] The utility model also provides a motor, which comprises a transmission mechanism and a motor rotating shaft as described above, and the transmission mechanism is connected with the first shaft body or the second shaft body of the motor rotating shaft.
[0017] Based on the above technical scheme, the utility model can realize the following technical effects:
[0018] 1. The motor rotating shaft of the utility model, which detachably mechanically connects the first shaft body and the second shaft body, enables the first shaft body and the second shaft body to be made of different materials, wherein the shaft body not directly connected with the transmission mechanism of the motor can be made of a material with lower cost, which is conducive to reducing manufacturing cost, and the damaged shaft body can be immediately replaced once the motor rotating shaft is damaged, and the maintenance cost is also low; since the first shaft body and the second shaft body are not welded, the influence of high temperature on the material performance of the shaft body during the welding process is avoided; since the cavity is formed in the second shaft body, and the liquid inlet of the first shaft body, the liquid channel of the liquid distribution shaft, the liquid distribution port and the cavity are in communication to form a flow space of cooling medium, under the conditions of meeting the function and strength, compared with the integral motor rotating shaft or the welded combined motor rotating shaft in the prior art, the rotating shaft itself is lighter in weight, and the energy consumption of the motor is smaller, so that the overall power of the motor is improved while the heat dissipation capacity of the motor is improved.
[0019] 2. The motor rotating shaft of the utility model, which is further provided with a liquid distribution shaft threadedly connected with the first shaft body, so that the liquid distribution shaft can be made of a material with lower price compared with the first shaft body and the second shaft body, and the material compatibility is good, which is conducive to reducing the overall cost.
[0020] 3. The motor rotating shaft of the utility model, the second shaft body is provided with the spline mounting portion on the side far from the first shaft body, the spline mounting portion is internally provided with the plug block in interference fit, the axial displacement of the spline of the motor in the spline mounting portion is limited, the accurate alignment is ensured, and the torque transmission failure or wear caused by loosening is prevented;
[0021] 4. The motor rotating shaft of the utility model, the first mounting table on the first shaft body and the second mounting table on the second shaft body are fastened and connected through the axial screw, the first mounting table is sleeved with the outer surface of the second mounting table, the installation and positioning of the first shaft body and the second shaft body are more relaxed, and the precision of the connecting point can be better guaranteed, the first mounting table can axially limit the second mounting table, the connection stability is enhanced, the friction and wear of the screw by the first mounting table and the second mounting table during the rotation of the motor rotating shaft are reduced, and the service life of the screw is prolonged;
[0022] 5. The motor of the utility model, since comprising the motor rotating shaft, therefore also has the beneficial effects of above-mentioned. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is the explosion view of the motor rotating shaft of the utility model;
[0024] Figure 2 It is the sectional view of the motor rotating shaft of the utility model;
[0025] Figure 3 It is the cooling medium flow direction view of the motor rotating shaft of the utility model.
[0026] In the drawing: 1 - first shaft body;11 - liquid inlet;12 - first mounting table;13 - rotary variable installation portion;2 - liquid distribution shaft;21 - liquid channel;22 - liquid distribution port;3 - second shaft body;31 - cavity;32 - liquid outlet;33 - second mounting table;34 - spline mounting portion;4 - screw;5 - plug block;6 - sealing ring. DETAILED DESCRIPTION
[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0030] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.
[0031] For the purposes of the description, reference can be made to spatially relative terms such as "on", "above", "over", "top", "side", "bottom", "under", "below", "up", "down", "between", "in", "within", "left", "right", "front", "back", "rear", "forward", "vertical", "horizontal", and the like. Unless the spatially relative terms are otherwise specified, they can be interpreted to include different orientations of the device in use or operation, for example, if the device in the figures is turned over, elements described as "above" or "over" other elements or structures can be oriented "below" or "under" the other elements or structures. Accordingly, the exemplary terms "above" and "over" can encompass both orientations "above" and "below". The device can also be oriented in other ways (for example, rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
[0032] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not carry a special meaning, and are merely used to distinguish one part from another, unless otherwise stated. Therefore, these words should not be interpreted as limiting the scope of protection of the present application.
[0033] As shown in Figure 1 and 2 The embodiment provides a motor rotating shaft, which comprises a first shaft body 1, a liquid distribution shaft 2 and a second shaft body 3, wherein the first shaft body 1 is provided with a liquid inlet 11; the liquid distribution shaft 2 is installed on the first shaft body 1, the liquid distribution shaft 2 is provided with a liquid channel 21, the liquid channel 21 is communicated with the liquid inlet 11, and the liquid distribution shaft 2 is provided with a liquid distribution port 22 communicated with the liquid channel 21; the second shaft body 3 is internally formed with a cavity 31, one end of the second shaft body 3 is detachably mechanically connected with the first shaft body 1, and when the first shaft body 1 and the second shaft body 3 are connected together, the liquid distribution shaft 2 extends into the cavity 31, so that the liquid distribution port 22 is located in the cavity 31.
[0034] As shown in Figure 2 and 3 The side wall of the second shaft body 3 can be provided with a liquid outlet 32 communicated with the cavity 31, at this time, the cooling medium entering the inside of the second shaft body 3 can flow out through the liquid outlet 32, and then continue to cool other parts around the motor rotating shaft, Figure 3 The arrow represents the flow direction of the cooling medium. In some other embodiments of the present application, a liquid outlet channel can also be formed on the first shaft body 1 to enable the cooling medium to flow out from the inside of the motor rotating shaft, and the present embodiment is not limited thereto.
[0035] In an embodiment of the utility model, first mounting table 12 can be equipped on first shaft body 1, second mounting table 33 corresponding with first mounting table 12 can be equipped on second shaft body 3, and first mounting table 12 and second mounting table 33 are fastened and connected through screw 4.
[0036] In order to facilitate accurate positioning and installation, the first mounting table 12 can be sleeved on the outer surface of the second mounting table 33, and the first mounting table 12 and the second mounting table 33 can be fastened and connected through the axial screw 4.
[0037] As a preferred technical solution of the embodiment, the first mounting table 12 and the second mounting table 33 are hot-jacketed, which can provide greater meshing force and bonding strength, thereby improving the strength and stability of the motor shaft.
[0038] In an embodiment of the utility model, the first shaft body 1 is provided with a rotary variable installation part 13 at one end away from the distribution shaft 2, and at this time, the second shaft body 3 can be used to connect with the spline transmission mechanism of the motor. Since the first shaft body 1 is not directly connected with the transmission mechanism of the motor, a lower-cost metal material can be used to reduce material costs. In some other embodiments of the utility model, the rotary variable installation part 13 can also be arranged at one end of the second shaft body 3 away from the first shaft body 1, and the first shaft body 1 is used to connect with the transmission mechanism of the motor. At this time, the second shaft body 3 can use a lower-cost metal material, and the embodiment is not limited.
[0039] As a preferred technical solution of the embodiment, the distribution shaft 2 is threadedly connected with the first shaft body 1. Since the strength requirement of the motor shaft for the distribution shaft 2 is lower than that of the first shaft body 1 and the second shaft body 3, and the distribution shaft 2 is also detachable relative to the first shaft body 1, a cheaper material can be selected to save costs. In some other embodiments, the distribution shaft 2 and the first shaft body 1 can also be designed as an integrated structure according to production needs, and the embodiment is not limited.
[0040] In an embodiment of the utility model, the second shaft body 3 can also be provided with a spline installation part 34 at one side away from the first shaft body 1, which is used to install the motor spline. A plug 5 can be arranged in the spline installation part 34, and the plug 5 is axially interference-fitted with the spline installation part 34. In some other embodiments of the utility model, in order to adapt to the shape of the transmission mechanism of the motor, the second shaft body 3 can also be provided with an external spline at one side away from the first shaft body 1, which is used to cooperate with an internal spline in the transmission mechanism, and the embodiment is not limited.
[0041] In an embodiment of the utility model, the spline installation part 34 is in communication with the cavity 31, and at this time, the plug 5 can also block the cooling medium, avoiding that the cooling medium flows out from the spline installation part 34 before being fully cooled in the cavity 31.
[0042] As a preferred technical scheme of the embodiment, a groove is formed on the block 5, and a sealing ring 6 is arranged between the groove and the spline mounting portion 34, so as to guarantee the sealing reliability of the block 5.
[0043] As shown in Figure 1 The embodiment also provides a motor, which comprises a transmission mechanism and the motor shaft as described above, and the transmission mechanism is connected with the first shaft body 1 or the second shaft body 3 of the motor shaft. The motor according to the embodiment of the utility model has the beneficial effects of the motor shaft as described above.
[0044] The embodiment of the utility model is described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiment, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.
Claims
1. A motor shaft, characterized in that, include: The first shaft (1) has a liquid inlet (11) on it; The liquid distribution shaft (2) is installed on the first shaft body (1). The liquid distribution shaft (2) has a liquid channel (21) inside, which is connected to the liquid inlet (11). The liquid distribution shaft (2) has a liquid distribution port (22) connected to the liquid channel (21). The second shaft (3) has a cavity (31) inside. One end of the second shaft (3) is detachably mechanically connected to the first shaft (1). When the first shaft (1) and the second shaft (3) are connected together, the liquid dispensing shaft (2) extends into the cavity (31) so that the liquid dispensing port (22) is located in the cavity (31).
2. The motor shaft according to claim 1, characterized in that, The first shaft (1) has a refractive mounting part (13) at one end away from the liquid separating shaft (2).
3. The motor shaft according to claim 1, characterized in that, The liquid separating shaft (2) is threadedly connected to the first shaft body (1).
4. The motor shaft according to claim 1, characterized in that, The second shaft (3) is further provided with a spline mounting part (34) on the side away from the first shaft (1), and a block (5) is provided in the spline mounting part (34), and the block (5) is axially interference-fitted with the spline mounting part (34).
5. The motor shaft according to claim 4, characterized in that, The plug (5) has a groove, and a sealing ring (6) is provided between the groove and the spline mounting part (34).
6. The motor shaft according to claim 1, characterized in that, The first shaft (1) is provided with a first mounting platform (12), and the second shaft (3) is provided with a second mounting platform (33) corresponding to the first mounting platform (12). The first mounting platform (12) and the second mounting platform (33) are fastened together by screws (4).
7. The motor shaft according to claim 6, characterized in that, The first mounting platform (12) is sleeved on the outer surface of the second mounting platform (33), and the first mounting platform (12) and the second mounting platform (33) are fastened together by axial screws (4).
8. The motor shaft according to claim 7, characterized in that, The first mounting platform (12) and the second mounting platform (33) are thermally fitted together.
9. The motor shaft according to claim 1, characterized in that, The second shaft (3) has a liquid outlet (32) on its side wall that communicates with the cavity (31).
10. An electric motor, characterized in that, include: The transmission mechanism and the motor shaft as described in any one of claims 1 to 9, wherein the transmission mechanism is connected to the first shaft (1) or the second shaft (3) of the motor shaft.