CN221177475U - Motor, drive assembly and vehicle - Google Patents
Motor, drive assembly and vehicle Download PDFInfo
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- CN221177475U CN221177475U CN202323086377.7U CN202323086377U CN221177475U CN 221177475 U CN221177475 U CN 221177475U CN 202323086377 U CN202323086377 U CN 202323086377U CN 221177475 U CN221177475 U CN 221177475U
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- 239000002184 metal Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000002035 prolonged effect Effects 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
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Abstract
The utility model discloses a motor, a drive assembly and a vehicle, wherein the motor comprises: the device comprises a shell, a rotating shaft and at least one conductive piece, wherein the rotating shaft is rotatably arranged in the shell, one of the rotating shaft and the shell is a first component, the other of the rotating shaft and the shell is a second component, at least one mounting groove is formed in the first component, and the mounting groove extends along the circumferential direction of the rotating shaft; the conductive piece is arranged in the mounting groove, the conductive piece is in contact with the second component, and when the motor works, the conductive piece is suitable for being in contact with the side wall of the mounting groove along the axial direction of the rotating shaft so that current generated on the rotating shaft is conducted to the shell through the conductive piece. According to the motor disclosed by the utility model, the motor is simple in structure and low in production difficulty, the production cost of the motor is reduced, and the service life of the motor is prolonged.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a motor, a driving assembly and a vehicle.
Background
In the prior art, common mode current is generated between a rotating shaft of a motor and a motor shell in the working process of the motor, and the induced common mode voltage/current flows to a motor bearing through the rotating shaft, so that breakdown and shaft current corrosion of the motor bearing are easily caused, and the motor bearing is damaged. In the related art, a conductive bearing in interference fit with the rotating shaft is generally arranged on the periphery of the rotating shaft, so that shaft voltage generated by the rotating shaft is transmitted to the frame through the conductive bearing and then transmitted to the ground through the frame. However, the structure of the conductive bearing is complex, and the rotating shaft structure of the motor needs to be improved to be matched with the conductive bearing, so that the structure of the motor is complex, the processing difficulty is high, and the production cost is high. Moreover, the installation of the motor requires a large space after the installation of the conductive bearing.
Disclosure of utility model
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model aims to provide the motor which is simple in structure and low in production difficulty, reduces the production cost of the motor and prolongs the service life of the motor.
Another object of the present utility model is to provide a driving assembly employing the above motor.
It is a further object of the present utility model to provide a vehicle employing the above motor or the above drive assembly.
An electric machine according to an embodiment of the first aspect of the present utility model includes: a housing; the rotating shaft is rotatably arranged in the shell, one of the rotating shaft and the shell is a first component, the other of the rotating shaft and the shell is a second component, at least one mounting groove is formed in the first component, and the mounting groove extends along the circumferential direction of the rotating shaft; and the conductive piece is arranged in the mounting groove, is contacted with the second component, and is suitable for being contacted with the side wall of the mounting groove along the axial direction of the rotating shaft when the motor works so that the current generated on the rotating shaft is conducted to the shell through the conductive piece.
According to the motor, through the arrangement of the mounting groove and the conductive piece, current on the rotating shaft can be conducted to the shell along the conductive piece, so that the current on the rotating shaft is prevented from flowing through other parts in the motor, such as a bearing, and further the effect of protecting the other parts is achieved, and the service life of the motor with the other parts is effectively prolonged. In addition, the mounting groove and the conductive piece are simple in structure, so that the structure of the motor is simplified, the production and processing difficulty of the motor is reduced compared with that of the motor in the prior art, the assembly efficiency of the motor is improved, and the production cost of the motor is reduced. When the motor is applied to a vehicle or other products, the occupied space of the motor in the vehicle is reduced, and the motor is convenient to install and use.
According to some embodiments of the utility model, the thickness of the conductive member in the axial direction of the rotating shaft is smaller than the width of the mounting groove in the axial direction of the rotating shaft, and the gap between the side wall of the mounting groove and the conductive member in the axial direction of the rotating shaft is l 1, wherein l 1 satisfies: l 1 is less than or equal to 0.1mm and less than or equal to 0.5mm.
According to some embodiments of the utility model, the conductive element is in clearance fit with the bottom wall of the mounting slot; and/or the conductive member is in interference fit with the second component.
According to some embodiments of the utility model, the mounting groove is formed on an outer circumferential surface of the rotating shaft.
According to some embodiments of the utility model, the housing has at least one mating groove formed thereon, an end of the rotating shaft is mated in the mating groove, and the conductive member is opposite to a side wall of the mating groove.
According to some embodiments of the utility model, the conductive member has an inner diameter d 1, and the bottom wall of the mounting groove has a diameter d 2, wherein d 1、d2 satisfies: d 1＞d2.
According to some embodiments of the utility model, the d 1、d2 further satisfies: d 1-d2 mm or less is 3mm or less.
According to some embodiments of the utility model, two ends of the conductive member are spaced apart from each other along a circumferential direction of the rotation shaft to form a gap.
According to some embodiments of the utility model, the conductive member is a metal member or a conductive plastic member.
According to some embodiments of the utility model, the plurality of mounting grooves comprises a first mounting groove and a second mounting groove, and the first mounting groove and the second mounting groove are arranged at intervals along the axial direction of the rotating shaft; the conductive pieces are multiple, the multiple conductive pieces comprise a first conductive piece and a second conductive piece, the first conductive piece is arranged in the first mounting groove, and the second conductive piece is arranged in the second mounting groove.
According to some embodiments of the utility model, the housing comprises a first end cap and a second end cap, the first end cap and the second end cap are respectively arranged at two ends of the rotating shaft, and the conductive piece is arranged between at least one of the first end cap and the second end cap and the rotating shaft.
According to some embodiments of the utility model, a first bearing and a second bearing are respectively arranged between two ends of the rotating shaft and the shell, and the conductive piece is positioned on one side of one of the first bearing and the second bearing, which is far away from the other one of the first bearing and the second bearing.
A drive assembly according to an embodiment of the second aspect of the present utility model comprises an electric motor according to an embodiment of the first aspect of the present utility model described above.
A vehicle according to an embodiment of a third aspect of the present utility model comprises an electric machine according to an embodiment of the above first aspect of the present utility model or a drive assembly according to an embodiment of the above second aspect of the present utility model.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of an electric machine according to an embodiment of the present utility model;
fig. 2 is an enlarged view of a portion a circled in fig. 1;
fig. 3 is a schematic view of a conductive member of an electric machine according to an embodiment of the present utility model.
Reference numerals:
100. A motor;
1. A housing; 11. a first end cap; 12. a second end cap; 13. a mating groove;
2. A rotating shaft; 21. a mounting groove; 211. a first mounting groove; 212. a second mounting groove;
22. A first bearing; 23. a second bearing;
3. a conductive member; 31. a first conductive member; 32. a second conductive member; 33. and (5) a notch.
Detailed Description
Embodiments of the present utility model are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and an electric machine 100 according to an embodiment of the first aspect of the present utility model is described below with reference to fig. 1 to 3.
As shown in fig. 1 and 2, a motor 100 according to an embodiment of the first aspect of the present utility model includes a housing 1, a rotating shaft 2, and at least one conductive member 3.
Specifically, the rotating shaft 2 is rotatably disposed in the housing 1, one of the rotating shaft 2 and the housing 1 is a first member, the other of the rotating shaft 2 and the housing 1 is a second member, at least one mounting groove 21 is formed in the first member, the mounting groove 21 extends in the circumferential direction of the rotating shaft 2, and the conductive member 3 is disposed in the mounting groove 21. For example, when the rotating shaft 2 is the first member, the annular mounting groove 21 may be formed on the outer peripheral surface of the rotating shaft 2, or when the housing 2 is the first member, the annular mounting groove may be formed on the side surface of the housing 1 facing the rotating shaft 2. So set up, other parts mounting groove 21 can be used for holding and positioning electrically conductive piece 3 to be favorable to the installation and the location of electrically conductive piece 3, and then be favorable to the assembly of electrically conductive piece 3, improve assembly efficiency and location accuracy.
Referring to fig. 1 and 2, the conductive member 3 is in contact with the second member. The arrangement of the conductive member 3 and the mounting groove 21 includes the following cases: first, the first part is pivot 2, and the second part is casing 1, and mounting groove 21 forms on pivot 2, and electrically conductive piece 3 contacts with casing 1. Second, the first component is the housing 1, the second component is the rotating shaft 2, the mounting groove 21 is formed on the housing 1, and the conductive member 3 is in contact with the rotating shaft 2. The conductive member 3 is adapted to be in contact with a side wall of the mounting groove 21 in the axial direction of the rotating shaft 2 when the motor 100 is operated so that a current generated on the rotating shaft 2 is conducted to the housing 1 through the conductive member 3.
During operation of the motor 100, there is a high frequency axial movement, and the rotating shaft 2 receives a force from right to left, so that the left side surface of the conductive member 3 contacts the left side wall of the mounting groove 21. Or the rotating shaft 2 receives a force from left to right so that the right side surface of the conductive member 3 contacts the right side wall of the mounting groove 21. Therefore, the side surface of the conductive member 3 contacts with the side wall of the mounting groove 21, so that the current on the rotating shaft 2 is conducted to the shell 1 through the conductive member 3, thereby ensuring that the current in the motor 100 does not pass through other parts of the motor 100, avoiding breakdown of oil films on the other parts (such as bearings) due to accumulation of voltage on the rotating shaft 2, improving the protection effect on the other parts, effectively prolonging the service life of the other parts, and further prolonging the service life of the motor 100. In addition, the oil in the motor 100 can be partially adhered to the surface of the conductive member 3, so that the abrasion transition between the side surface of the conductive member 3 and the mounting groove 21 in the process of the running of the rotating shaft 2 is avoided, and the service life of the conductive member 3 is prolonged. Meanwhile, the conductive piece 3 can move along the left-right direction (namely the axial direction of the rotating shaft 2), so that an oil film is not formed on the surface of the conductive piece 3, and further the influence of the oil film on the conductivity of the conductive piece 3 is avoided. In addition, the conductive member 3 and the mounting groove 21 are simple in structure and convenient to assemble and produce, so that the assembling efficiency of the motor 100 is improved, and the production cost of the motor 100 is reduced. Moreover, the mounting groove 21 is formed on the first member, that is, the mounting groove 21 is formed on one of the rotating shaft 2 and the housing 1, which reduces the space occupied by the mounting groove 21, and does not need to additionally add other components or lengthen the rotating shaft 2, thereby simplifying the structure of the motor 100, reducing the difficulty in manufacturing and processing the motor 100 as compared with the motor in the conventional art, reducing the occupied space of the motor 100 in the vehicle when the motor 100 is applied to the vehicle, and facilitating the installation and use of the motor 100.
According to the motor 100 disclosed by the utility model, through the arrangement of the mounting groove 21 and the conductive piece 3, the current on the rotating shaft 2 can be conducted to the shell 1 along the conductive piece 3, so that the current on the rotating shaft 2 is prevented from flowing through other parts in the motor 100, such as bearings, and further the effect of protecting the other parts is achieved, and the service life of the motor 100 with the other parts is effectively prolonged. In addition, the mounting groove 21 and the conductive member 3 are simple in structure, so that the structure of the motor 100 is simplified, the production and processing difficulty of the motor 100 is reduced compared with that of a motor in the prior art, the assembly efficiency of the motor 100 is improved, and the production cost of the motor 100 is reduced. When the motor 100 is applied to a vehicle or other product, the occupied space of the motor 100 in the vehicle is reduced, facilitating the installation and use of the motor 100.
According to some embodiments of the present utility model, referring to fig. 1 and 2, the thickness of the conductive member 3 in the axial direction of the rotating shaft 2 (e.g., the left-right direction as viewed in fig. 1) is smaller than the width of the mounting groove 21 in the axial direction of the rotating shaft 2, and the gap between the side wall of the mounting groove 21 and the conductive member 3 in the axial direction of the rotating shaft 2 is l 1, where l 1 satisfies: l 1 is less than or equal to 0.1mm and less than or equal to 0.5mm.
For example, in the examples of fig. 1 and 2, the difference in the thickness of the conductive member 3 in the axial direction of the rotation shaft 2 and the width of the mounting groove 21 in the axial direction of the rotation shaft 2 is l 1. When the clearance l 1 between the side wall of the mounting groove 21 and the conductive member 3 in the axial direction of the rotating shaft 2 is smaller than 0.1mm, the conductive member 3 is not easy to be placed in the mounting groove 21 during the assembly process of the conductive member 3 and the mounting groove 21, so that the assembly efficiency of the conductive member 3 and the mounting groove 21 is reduced. In addition, when the gap between the side wall of the mounting groove 21 and the conductive piece 3 in the axial direction of the rotating shaft 2 is too small, friction is easily generated between the conductive piece 3 and the side wall of the mounting groove 21 in the working process of the motor 100, so that the conductive piece 3 is easy to wear, the service life of the conductive piece 3 is shortened, and even the conductive piece 3 is blocked in the mounting groove 21. When the clearance l 1 between the side wall of the mounting groove 21 and the conductive member 3 in the axial direction of the rotating shaft 2 is greater than 0.5mm, the time from the contact between the left side surface of the conductive member 3 and the left side wall of the mounting groove 21 to the contact between the right side surface of the conductive member 3 and the right side wall of the mounting groove 21 is prolonged, so that the current on the rotating shaft 2 cannot flow to the conductive member 3 at high frequency, the current on the rotating shaft 2 can move to other parts to strike the other parts of the motor 100, the other parts are damaged, and the normal use of the motor 100 is affected.
Therefore, the gap l 1 between the side wall of the mounting groove 21 and the conductive member 3 in the axial direction of the rotating shaft 2 is 0.1 mm- 1 mm, which is beneficial to assembling the conductive member 3 into the mounting groove 21, so that the assembling efficiency of the conductive member 3 and the mounting groove 21 is improved, and the assembling efficiency of the motor 100 is further improved. In addition, the contact of the conductive member 3 and the side wall of the mounting groove 21 is rationalized, so that in the working process of the motor 100, the abrasion of the conductive member 3 can be reduced, the service life of the conductive member 3 is prolonged, the conductive member 3 is prevented from being blocked, the high-frequency conduction of the conductive member 3 can be ensured, and the service performance of the motor 100 is improved.
According to some embodiments of the utility model, referring to fig. 2, the conductive member 3 is in a clearance fit with the bottom wall of the mounting groove 21. That is, a gap is left between the inner peripheral surface of the conductive member 3 and the bottom wall of the mounting groove 21. For example, in the example of fig. 2, the distance between the side of the conductive member 3 adjacent to the rotation shaft and the axis of the rotation shaft 2 is greater than the distance between the bottom wall of the mounting groove 21 and the axis of the rotation shaft 2. So set up, in the in-process of motor 100 work, can avoid electrically conductive piece 3 and the diapire contact of mounting groove 21 effectively to reduce the wearing and tearing of mounting groove 21 to electrically conductive piece 3 medial surface, and then further prolonged electrically conductive piece 3's life.
According to other embodiments of the utility model, the conductive element 3 is in an interference fit with the second component. For example, when the first component is the rotating shaft 2 and the second component is the housing 1, the mounting groove 21 is formed on the rotating shaft 2, the conductive member 3 is in interference fit with the housing 1, and when the first component is the housing 1 and the second component is the rotating shaft 2, the mounting groove 21 is formed on the housing 1, and the conductive member 3 is in interference fit with the rotating shaft 2. So set up, make there is not the gap between electrically conductive piece 3 and the second part to be convenient for the electric current flows between electrically conductive piece 3 and the second part, guaranteed the smoothness nature of electric current flow, and then guaranteed the normal use of motor 100. In addition, the conductive member 3 can be stably and firmly fitted in the mounting groove 21, so that the conductive member 3 can be stably used for a long period of time.
According to still other embodiments of the present utility model, the conductive member 3 is in a clearance fit with the bottom wall of the mounting groove 21, while the conductive member 3 is in an interference fit with the second member. Therefore, when the motor 100 works, transitional abrasion of the conductive piece 3 and the bottom wall of the mounting groove 21 can be avoided, so that the service life of the conductive piece 3 is prolonged, and no gap exists between the conductive piece 3 and the second component, so that the smoothness of current flow is ensured. Furthermore, the conductive member 3 can be stably and firmly fitted in the mounting groove 21, so that the long-term stable use of the conductive member 3 is facilitated.
Alternatively, referring to fig. 1 and 2, a mounting groove 21 is formed on the outer circumferential surface of the rotating shaft 2. For example, in the example of fig. 1 and 2, a mounting groove 21 is formed on the outer peripheral surface of the end of the rotating shaft 2 to which the housing 1 is fitted, and the mounting groove 21 may be provided as an annular groove. So set up, the simple structure of mounting groove 21 is convenient for produce to mounting groove 21 need not additionally to occupy motor 100's space, makes the overall arrangement in the motor 100 reasonable, compact structure. In addition, the structure of the rotating shaft 2 is simple, other improvements on the rotating shaft 2 are not needed, and the production difficulty of the rotating shaft 2 is reduced.
Further, referring to fig. 1 and 2, at least one fitting groove 13 is formed on the housing 1, the end of the rotation shaft 2 is fitted in the fitting groove 13, and the conductive member 3 is opposite to the side wall of the fitting groove 13. For example, in the example of fig. 1 and 2, at least one fitting groove 13 is formed on a side of the housing 1 near the rotation shaft 2, an opening of the fitting groove 13 faces the rotation shaft 2, and the rotation shaft 2 is rotatable relative to the housing in an axial direction of the rotation shaft 2. The outer peripheral surface of the conductive member 3 is in contact with the side wall of the fitting groove 13. Therefore, the end part of the rotating shaft 2 can be arranged in the matching groove 13, which is beneficial to the rapid assembly of the shell 1 and the rotating shaft 2, thereby improving the assembly efficiency of the rotating shaft 2 and the shell 1. Moreover, the matching groove 13 also has a positioning effect on the rotating shaft 2, thereby improving the assembly accuracy of the rotating shaft 2 and the shell 1. Further, the contact of the conductive member 3 with the side wall of the fitting groove 13 facilitates the contact of the conductive member 3 with the housing 1, thereby facilitating the flow of current from the conductive member 3 to the housing 1 to reduce the flow of current from the rotating shaft 2 to other components such as a bearing.
According to some embodiments of the utility model, the inner diameter of the conductive element 3 is d 1 and the diameter of the bottom wall of the mounting groove 2 1 is d 2, wherein d 1、d2 satisfies: d 1＞d2. For example, when the conductive member 3 is fitted over the shaft 2, the inner peripheral surface of the conductive member 3 is not in contact with the bottom wall of the mounting groove 21. By the arrangement, on one hand, the possibility that the inner side surface of the conductive piece 3 is contacted with the bottom wall of the mounting groove 21 is reduced, so that the abrasion of the mounting groove 21 to the inner side surface of the conductive piece 3 is reduced, and the service life of the conductive piece 3 is prolonged. On the other hand, the conductive member 3 can be conveniently sleeved on the periphery of the rotating shaft 2, the obstruction of the conductive member 3 to the rotation of the rotating shaft 2 is reduced, the smooth rotation of the rotating shaft 2 is facilitated, and the long-term stable use of the motor 100 is facilitated.
Further, d 1、d2 further satisfies: d 1-d2 mm or less is 3mm or less. For example, when the difference between the inner diameter of the conductive member 3 and the diameter of the bottom wall of the mounting groove 21 (i.e., d 1-d2) is smaller than 3mm, the interval between the inner side surface of the conductive member 3 and the bottom wall of the mounting groove 21 is smaller, so that during the operation of the motor 100, the inner side surface of the conductive member 3 is easy to contact with the bottom wall of the mounting groove 21 to rub, and further the inner side surface of the conductive member 3 is easy to wear excessively, thereby shortening the service life of the conductive member 3. In addition, the fitting of the conductive member 3 with the mounting groove 21 is not facilitated. Furthermore, the conductive member 3 may generate resistance to the rotation of the rotation shaft 2, which is disadvantageous to the rapid rotation of the rotation shaft 2. When the difference between the inner diameter of the conductive member 3 and the diameter of the bottom wall of the mounting groove 21 (i.e. d 1-d2) is greater than 5mm, the gap between the inner side surface of the conductive member 3 and the bottom wall of the mounting groove 21 is larger, so that the conductive member 3 easily shakes along the radial direction of the rotating shaft 2 in the rotating process of the conductive member 3, thereby affecting the stability of the assembly of the housing 1 and the rotating shaft 2 and the use of the motor 100. Further, the contact area of the conductive member 3 with the inner wall surface of the mounting groove 21 is reduced, thereby adversely affecting the flow of current of the rotary shaft 2 between the conductive member 3 and the housing 1. Therefore, the inner diameter d 1 of the conductive member 3 and the diameter d 2 of the bottom wall of the mounting groove 21 are further enabled to be smaller than or equal to 3mm and smaller than or equal to 1-d2 and smaller than or equal to 5mm, friction between the conductive member 3 and the mounting groove 21 is reduced, and the service life of the conductive member 3 is prolonged. Meanwhile, the assembly of the conductive piece 3 and the mounting groove 21 is facilitated, and the assembly efficiency is improved. In addition, the radial shaking of the conductive member 3 along the rotating shaft 2 is reduced, so that the assembly stability of the shell 1 and the rotating shaft 2 is improved, the current of the rotating shaft 2 can flow between the conductive member 3 and the shell 1, and the motor 100 can be used conveniently.
According to some embodiments of the present utility model, referring to fig. 1 and 3, both ends of the conductive member 3 are spaced apart from each other in the circumferential direction of the rotation shaft 2 to form a notch 33. For example, in the example of fig. 1 and 3, the conductive member 3 is in the shape of a ring having a notch 33. Therefore, the acting force generated by the conductive piece 3 along the radial direction of the rotating shaft 2 can be enhanced, so that the close contact between the conductive piece 3 and the second component is enhanced, the current conduction effect is improved, and the smooth transmission of the current is ensured. In addition, in the working process of the motor 100, the conductive member 3 extrudes the oil flowing into the mounting groove 21, so that the oil can be discharged out of the mounting groove 21 through the notch 33, and an oil film is prevented from being generated at the contact surface of the conductive member 3 and the mounting groove 21, and the normal use of the conductive member 3 is further facilitated.
According to some alternative embodiments of the utility model, the conductive element 3 is a metal element or a conductive plastic element. For example, when the conductive member 3 is a metal member, the conductive effect of the metal member is strong, thereby improving the conduction efficiency of the current generated on the rotation shaft 2 through the conductive member 3 to the housing 1. In addition, the wear resistance of the metal piece is good, so that the service life of the conductive piece 3 is prolonged. When the conductive member 3 is a conductive plastic member, the conductive plastic member has a conductive effect, and the conductive plastic member has the characteristics of corrosion resistance, low cost and the like, thereby being beneficial to long-term use of the conductive member 3, reducing the production cost of the conductive member 3, and further reducing the production cost of the motor 100.
According to some embodiments of the utility model, referring to fig. 1, the mounting groove 21 is plural, and in the description of the utility model, "plural" means two or more. The plurality of mounting grooves 21 includes a first mounting groove 211 and a second mounting groove 212, and the first mounting groove 211 and the second mounting groove 212 are disposed at intervals along the axial direction of the rotating shaft 2. The plurality of conductive members 3 are provided, the plurality of conductive members 3 includes a first conductive member 31 and a second conductive member 32, the first conductive member 31 is disposed in the first mounting groove 211, and the second conductive member 32 is disposed in the second mounting groove 212.
For example, in the example of fig. 1, the first mounting groove 211 is located at the left end of the rotating shaft 2, and the second mounting groove 212 is located at the right end of the rotating shaft 2. Of course, the first mounting groove 211 may be located at the right end of the rotating shaft, and the second mounting groove 212 may be located at the left end of the rotating shaft, where the first mounting groove is located at the left end of the rotating shaft 2, and the first conductive member 31 is illustrated as being fitted in the first mounting groove 211. Thus, the current on the rotating shaft 2 can flow through the first conductive member 31 and the second conductive member 32 along the left and right ends of the rotating shaft 2 to be conducted to the casing 1, so that the flowing speed of the current on the rotating shaft 2 is increased, the flowing path of the current on the rotating shaft 2 is increased, the current on the rotating shaft 2 is further prevented from flowing to other parts of the motor 100, such as the first bearing 22 and the second bearing 23, and the protection effect on the other parts is further improved. The first conductive member 31 and the second conductive member 32 may have the same structure, and may be made of the same material or different materials, and are not particularly limited herein.
According to some embodiments of the present utility model, referring to the body 1, the housing 1 includes a first end cap 11 and a second end cap 12, the first end cap 11 and the second end cap 12 are respectively provided at both ends of the rotation shaft 2, and the conductive member 3 is provided between at least one of the first end cap 11 and the second end cap 12 and the rotation shaft 2. For example, in the example of fig. 1, the first end cover 11 is located at the left end of the rotating shaft 2, the second end cover 12 is located at the right end of the rotating shaft 2, the first conductive member 31 is located between the first end cover 11 and the left end of the rotating shaft 2, and the second conductive member 32 is located between the second end cover 12 and the right end of the rotating shaft 2. Therefore, the first end cover 11 is assembled with the left end of the rotating shaft 2, and the second end cover 12 is assembled with the right end of the rotating shaft 2, so that the balance and stability of the assembly of the rotating shaft 2 and the shell 1 are improved, and the balance of the motor 100 during operation is further improved. Of course, the two axial ends of the rotating shaft 2 may be connected to the housing 1 through the first end cover 11 and the second end cover 12, and the two axial ends of the rotating shaft 2 may also be directly engaged with the housing 1 of the motor 100.
According to some embodiments of the present utility model, referring to fig. 1, a first bearing 22 and a second bearing 23 are respectively provided between both ends of the rotation shaft 2 and the housing 1, and the conductive member 3 is located at one side of one of the first bearing 22 and the second bearing 23, which is away from the other of the first bearing 22 and the second bearing 23. For example, in the example of fig. 1, the first bearing 22 is located between the left end of the rotating shaft 2 and the first end cover 11, and the first conductive member 31 is located on the side of the first bearing 22 away from the second bearing 23, the second bearing 23 is located between the right end of the rotating shaft 2 and the second end cover 12, and the second conductive member 32 is located on the side of the second bearing 23 away from the first bearing 22. The outer circumferential surfaces of the first bearing 22 and the second bearing 23 are respectively connected with the corresponding first end cover 11 and second end cover 12, so that the rapid rotation of the rotating shaft 2 is facilitated by the cooperation of the first bearing 22, the second bearing 23 and the rotating shaft 2. The first bearing 22 and the second bearing 23 are respectively positioned at two ends of the rotating shaft 2, so that the rotating balance of the rotating shaft 2 is improved, and the working efficiency of the motor 100 is improved. In addition, through the arrangement of the conductive member 3, the current on the rotating shaft 2 is not easy to flow to the first bearing 22 and the second bearing 23, so that the damage of the current to the first bearing 22 and the second bearing 23 is reduced, and the service lives of the first bearing 22 and the second bearing 23 are prolonged.
A drive assembly (not shown) according to an embodiment of the second aspect of the present utility model includes a motor 100 according to an embodiment of the first aspect of the present utility model described above.
According to the driving assembly of the utility model, by adopting the motor 100, the service life of the driving assembly is prolonged, and the service performance of the driving assembly is improved.
A vehicle (not shown) according to an embodiment of the third aspect of the present utility model includes the motor 100 according to the embodiment of the first aspect of the present utility model described above or the drive assembly according to the embodiment of the second aspect described above.
According to the vehicle of the utility model, by adopting the motor 100 or the driving assembly, the service life of the vehicle is prolonged, and the service performance of the vehicle is improved.
Other configurations and operations of the motor 100, drive assembly, and vehicle according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present utility model, it should be understood that the terms "center," "width," "thickness," "left," "right," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. An electric machine, comprising:
A housing;
The rotating shaft is rotatably arranged in the shell, one of the rotating shaft and the shell is a first component, the other of the rotating shaft and the shell is a second component, at least one mounting groove is formed in the first component, and the mounting groove extends along the circumferential direction of the rotating shaft;
And the conductive piece is arranged in the mounting groove, is contacted with the second component, and is suitable for being contacted with the side wall of the mounting groove along the axial direction of the rotating shaft when the motor works so that the current generated on the rotating shaft is conducted to the shell through the conductive piece.
2. The motor of claim 1, wherein a thickness of the conductive member in an axial direction of the rotating shaft is smaller than a width of the mounting groove in the axial direction of the rotating shaft, a gap between a side wall of the mounting groove and the conductive member in the axial direction of the rotating shaft is l 1, wherein l 1 satisfies: l 1 is less than or equal to 0.1mm and less than or equal to 0.5mm.
3. The motor of claim 1, wherein the conductive member is in clearance fit with the bottom wall of the mounting slot; and/or
The conductive member is in interference fit with the second member.
4. The motor of claim 1, wherein the mounting groove is formed on an outer circumferential surface of the rotating shaft.
5. The motor of claim 4, wherein the housing has at least one fitting groove formed therein, an end of the rotating shaft being fitted in the fitting groove, and the conductive member being opposite to a side wall of the fitting groove.
6. The motor of claim 4, wherein the conductive member has an inner diameter d 1 and the bottom wall of the mounting slot has a diameter d 2, and wherein d 1、d2 satisfies: d 1＞d2.
7. The electric machine of claim 6, wherein d 1、d2 further satisfies: d 1-d2 mm or less is 3mm or less.
8. The motor of claim 1, wherein both ends of the conductive member are spaced apart from each other in a circumferential direction of the rotating shaft to form a gap.
9. The electric machine of claim 1, wherein the conductive member is a metal member or a conductive plastic member.
10. The motor of claim 1, wherein the plurality of mounting slots includes a first mounting slot and a second mounting slot, the first mounting slot and the second mounting slot being spaced apart along an axial direction of the shaft;
The conductive pieces are multiple, the multiple conductive pieces comprise a first conductive piece and a second conductive piece, the first conductive piece is arranged in the first mounting groove, and the second conductive piece is arranged in the second mounting groove.
11. The motor of claim 1, wherein the housing comprises a first end cap and a second end cap, the first end cap and the second end cap being disposed at opposite ends of the shaft, respectively, and the conductive member being disposed between at least one of the first end cap and the second end cap and the shaft.
12. The motor of any one of claims 1-11, wherein a first bearing and a second bearing are disposed between both ends of the rotating shaft and the housing, respectively, and the conductive member is located on a side of one of the first bearing and the second bearing away from the other of the first bearing and the second bearing.
13. A drive assembly comprising an electric machine according to any one of claims 1-12.
14. A vehicle comprising an electric machine according to any one of claims 1-12 or a drive assembly according to claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323086377.7U CN221177475U (en) | 2023-11-14 | 2023-11-14 | Motor, drive assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323086377.7U CN221177475U (en) | 2023-11-14 | 2023-11-14 | Motor, drive assembly and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221177475U true CN221177475U (en) | 2024-06-18 |
Family
ID=91460653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323086377.7U Active CN221177475U (en) | 2023-11-14 | 2023-11-14 | Motor, drive assembly and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221177475U (en) |
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2023
- 2023-11-14 CN CN202323086377.7U patent/CN221177475U/en active Active
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