Shell, secondary assembly, motor, electromagnetic suspension and vehicle

Abstract

The utility model discloses a housing, a secondary assembly, a motor, an electromagnetic suspension and a vehicle. The housing comprises a housing body. The shell is used for a secondary assembly of the motor, mounting grooves used for mounting magnetic steel are formed in the inner circumferential wall of a shell body, the mounting grooves extend in the axial direction of the shell body, and the multiple mounting grooves are formed in the circumferential direction of the shell body at intervals. According to the shell of the utility model, the plurality of mounting grooves on the shell can limit the magnetic steel, so that the magnetic steel can be prevented from falling off, the stability of the magnetic steel is improved, and the possibility of a motor chamber sweeping phenomenon caused by the movement of the magnetic steel can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a casing, secondary assembly, motor, electromagnetic suspension and vehicle. BACKGROUND

[0002] In the related art, the active suspension system is a new type of suspension system developed rapidly in recent years, and the permanent magnet linear motor as the electromagnetic actuator of the active suspension system plays a crucial role. The permanent magnet linear motor usually comprises a primary assembly and a secondary assembly, and the magnetic steel provided in the secondary assembly usually adopts a surface-mounted ring-shaped magnetic steel. However, the stability of the surface-mounted magnetic steel is poor, and as the motor operates, the magnetic steel is prone to moving, eccentricity or falling off, which may also cause the primary assembly to sweep the bore of the magnetic steel and affect the stable operation of the motor. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a casing, a plurality of mounting grooves on the casing can limit the magnetic steel, thereby avoiding the falling off of the magnetic steel, improving the stability of the magnetic steel, and reducing the possibility of the motor producing a sweeping phenomenon due to the movement of the magnetic steel.

[0004] The utility model further provides a secondary assembly, which comprises the above-mentioned casing.

[0005] The utility model further provides a motor, which comprises the above-mentioned secondary assembly.

[0006] The utility model further provides an electromagnetic suspension, which comprises the above-mentioned motor.

[0007] The utility model further provides a vehicle, which comprises the above-mentioned electromagnetic suspension.

[0008] According to the casing embodiment of the utility model, the inner circumferential wall of the casing body is provided with a mounting groove for mounting the magnetic steel, the mounting groove extends along the axial direction of the casing body, and the mounting groove is multiple and is arranged at intervals along the circumferential direction of the casing body.

[0009] According to the casing embodiment of the utility model, the mounting groove for mounting the magnetic steel is arranged on the inner circumferential wall of the casing body, the mounting groove is multiple and is arranged at intervals along the circumferential direction of the casing body, the mounting groove can limit and position the magnetic steel, the stability of the connection between the magnetic steel and the casing body can be effectively improved, the problem of the falling off of the surface-mounted magnetic steel can be avoided, the structural stability of the secondary assembly can be improved, and the stability and reliability of the motor can be improved. The possibility of the motor producing a sweeping phenomenon due to the movement of the magnetic steel can be reduced, thereby ensuring the smooth operation of the motor.

[0010] According to some embodiments of the present application, the opening width of the mounting groove is smaller than the width of the bottom wall of the mounting groove in the circumferential direction of the shell body.

[0011] According to some embodiments of the present application, the shell body comprises an outer shell and a limiting tooth, the limiting tooth is connected with the inner circumferential wall of the outer shell, the limiting tooth extends in the axial direction of the outer shell, the limiting tooth is spaced apart in the circumferential direction of the outer shell, and any two adjacent limiting teeth and the inner wall of the outer shell define a mounting groove.

[0012] In some embodiments of the present application, the limiting tooth comprises a tooth body and a baffle, one end of the tooth body is connected with the inner circumferential wall of the outer shell, and the tooth body extends in the axial direction of the shell body; the tooth body is provided with the baffle in the circumferential direction of the shell body, the baffle is located at one end of the tooth body away from the outer shell, and the opening is defined between the two baffles located on both sides of the mounting groove in the width direction.

[0013] In some embodiments of the present application, the baffle extends in the axial direction of the outer shell.

[0014] In some embodiments of the present application, the baffle comprises a plurality of sub-baffles, at least one side of the tooth body is provided with a plurality of sub-baffles in the circumferential direction of the outer shell, and a plurality of sub-baffles are spaced apart in the axial direction of the outer shell.

[0015] In some embodiments of the present application, in the radial direction of the shell body, the thickness of the baffle is less than 2mm; and / or, in the circumferential direction of the shell body, the width of the baffle is less than one third of the width of the magnetic steel.

[0016] In some embodiments of the present application, in the cross section perpendicular to the axial direction of the shell body, the mounting groove is rectangular, in the direction of the shell body radially inward, the width of the mounting groove in the circumferential direction of the shell body is constant, and the thickness of the tooth body in the circumferential direction of the shell body gradually decreases.

[0017] In some embodiments of the present application, in the cross section perpendicular to the axial direction of the shell body, the mounting groove is trapezoidal or fan ring-shaped, in the direction of the shell body radially inward, the width of the mounting groove in the circumferential direction of the shell body gradually decreases, and the thickness of the limiting tooth in the circumferential direction of the shell body is constant.

[0018] In some embodiments of the present application, the limiting tooth and the outer shell are an integral part.

[0019] In some embodiments of this utility model, the limiting tooth and the outer shell are separate machined parts.

[0020] In some embodiments of this utility model, the limiting tooth is snapped into the outer shell.

[0021] In some embodiments of this utility model, the limiting tooth has a first protrusion at one end near the radially outer side of the shell body, and a second protrusion is provided on both sides of the first protrusion along the circumferential direction of the shell body. The inner circumferential wall of the shell body is provided with a snap-fit ​​groove that engages with the first protrusion, and the snap-fit ​​groove is provided with a mating groove on both sides along the circumferential direction of the shell body that engages with the second protrusion.

[0022] The secondary component according to an embodiment of the present invention includes: the aforementioned housing and magnet. The secondary component is used for a motor, and the magnet is disposed within the mounting groove.

[0023] According to the secondary component of this utility model embodiment, by providing mounting grooves for mounting magnets on the inner peripheral wall of the housing body, and having multiple mounting grooves spaced apart along the circumferential direction of the housing body, the mounting grooves can limit and position the magnets, effectively improving the stability of the connection between the magnets and the housing body, avoiding the problem of patch magnets falling off, thereby improving the structural stability of the secondary component, and consequently improving the stability and reliability of the motor. It also reduces the possibility of magnet rubbing due to movement, thus ensuring smooth motor operation.

[0024] In some embodiments of this utility model, the secondary component further includes a magnetic back plate, which is disposed in the mounting groove and between the magnet and the bottom wall of the mounting groove. The magnetic back plate extends along the axial direction of the housing body and is connected to the magnet and the inner wall of the mounting groove.

[0025] In some embodiments of this utility model, along the axial direction of the shell body, the length of the magnetic back plate is greater than or equal to the length of the magnet; and / or, along the circumferential direction of the shell body, the width of the magnetic back plate is greater than or equal to half the width of the magnet.

[0026] In some embodiments of this utility model, the magnetic back plate is bonded to the shell body; and / or, the magnet is bonded to or magnetically attracted to the magnetic back plate.

[0027] In some embodiments of this utility model, the magnetic back plate is a silicon steel sheet laminate or a soft magnetic composite material.

[0028] In some embodiments of this utility model, the magnet is a permanent magnet; and / or the housing is a non-magnetic heat-treated and strengthened aluminum alloy part.

[0029] The motor according to the embodiment of the present application comprises: a primary assembly and the secondary assembly.

[0030] The motor according to the embodiment of the present application, by setting the mounting groove for mounting the magnetic steel on the inner circumferential wall of the shell body of the shell, the mounting grooves are multiple and are spaced along the circumferential direction of the shell body, the mounting groove can limit and position the magnetic steel, the stability of the connection between the magnetic steel and the shell body can be effectively improved, the problem of the patch type magnetic steel falling off can be avoided, thereby the structural stability of the secondary assembly can be improved, and the stability and reliability of the motor can be further improved.

[0031] The electromagnetic suspension according to the embodiment of the present application comprises: the motor.

[0032] The electromagnetic suspension according to the embodiment of the present application, by setting the mounting groove for mounting the magnetic steel on the inner circumferential wall of the shell body of the shell, the mounting grooves are multiple and are spaced along the circumferential direction of the shell body, the mounting groove can limit and position the magnetic steel, the stability of the connection between the magnetic steel and the shell body can be effectively improved, the problem of the patch type magnetic steel falling off can be avoided, thereby the structural stability of the secondary assembly can be improved, and the stability and reliability of the motor and the electromagnetic suspension can be further improved.

[0033] The vehicle according to the embodiment of the present application comprises: the electromagnetic suspension.

[0034] The vehicle according to the embodiment of the present application, by setting the mounting groove for mounting the magnetic steel on the inner circumferential wall of the shell body of the shell, the mounting grooves are multiple and are spaced along the circumferential direction of the shell body, the mounting groove can limit and position the magnetic steel, the stability of the connection between the magnetic steel and the shell body can be effectively improved, the problem of the patch type magnetic steel falling off can be avoided, thereby the structural stability of the secondary assembly can be improved, and the stability and reliability of the motor, the electromagnetic suspension and the vehicle can be further improved.

[0035] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0036] The above and / or additional aspects and advantages of the present utility model will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings, of which:

[0037] Figure 1 is a front view of a motor according to an embodiment of the present utility model;

[0038] Figure 2 is a cross-sectional view along Figure 1 line A-A in the middle;

[0039] Figure 3 is a perspective view of a motor according to an embodiment of the present utility model;

[0040] Figure 4 is a perspective view of a housing according to an embodiment of the present utility model;

[0041] Figure 5 is a top view of a secondary assembly according to an embodiment of the present utility model, wherein the tooth body is provided with a baffle on both sides along the circumferential direction of the shell body;

[0042] Figure 6 is a perspective view of an outer shell of a shell body of a housing according to an embodiment of the present utility model;

[0043] Figure 7 is Figure 6 an enlarged view at B;

[0044] Figure 8 is a perspective view of a limiting tooth of a shell body of a housing according to an embodiment of the present utility model;

[0045] Figure 9 is a top view of a secondary assembly according to an embodiment of the present utility model, wherein the width of the mounting groove along the circumferential direction of the shell body gradually decreases in the direction of the shell body radially inward;

[0046] Figure 10 is a top view of a housing according to an embodiment of the present utility model;

[0047] Figure 11 is a perspective view of a magnetic steel and a magnetic back plate of a secondary assembly according to an embodiment of the present utility model.

[0048] Reference signs:

[0049] 100, housing;

[0050] 1, shell body; 11, outer shell; 111, mounting groove; 112, opening; 113, bottom wall; 114, clamping groove; 115, matching groove; 12, limiting tooth; 121, tooth body; 122, baffle; 123, first protrusion; 124, second protrusion;

[0051] 200, secondary assembly;

[0052] 2. A magnetic steel;

[0053] 3. A magnetic back plate;

[0054] 300. A motor;

[0055] 4. A primary assembly. DETAILED DESCRIPTION

[0056] Embodiments of the present application will be described in detail below with reference to the drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0057] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0058] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] Reference will now be made to Figures 1-11 The shell 100 according to the embodiments of the present application is described below.

[0060] As shown in Figure 4 and Figure 6 The shell 100 according to the embodiments of the present application includes a shell body 1.

[0061] Specifically, as shown in Figures 1-6And Figure 9 As shown in the figure, the shell 100 is used for the secondary assembly 200 of the motor 300, the inner circumferential wall of the shell body 1 is provided with the mounting groove 111 for mounting the magnetic steel 2, the mounting groove 111 extends along the axial direction of the shell body 1, the mounting groove 111 is multiple and is arranged at intervals along the circumferential direction of the shell body 1, and in the circumferential direction of the shell body 1, the opening 112 width of the mounting groove 111 is smaller than the width of the bottom wall 113 of the mounting groove 111.

[0062] It can be understood that the motor 300 is also provided with the primary assembly 4, the secondary assembly 200 is sleeved outside the primary assembly 4 and can move along the axial direction of the primary assembly 4 relative to the primary assembly 4. The magnetic steel 2 is fixed to the inner circumferential wall of the shell body 1 through the mounting groove 111, and is used for generating a stable and strong magnetic field, so as to be able to provide the necessary magnetic force for the operation of the secondary assembly 200. When the primary assembly 4 is connected with the alternating current power supply, a traveling wave magnetic field is generated, the traveling wave magnetic field interacts with the magnetic field generated by the magnetic steel 2, so as to generate an electromagnetic thrust to push the secondary assembly 200 to move along the axial direction of the primary assembly 4.

[0063] The magnetic steel 2 corresponds to the mounting groove 111, that is, the magnetic steel 2 extends along the axial direction of the shell body 1 and is multiple and arranged at intervals along the circumferential direction of the shell body 1, so that the arrangement mode and layout structure of the magnetic steel 2 can be optimized, which is helpful to optimize the magnetic field distribution, so that the magnetic field is more uniform on the secondary assembly 200, thereby the thrust and stability of the movement of the shell 100 can be improved, and the operation stability of the motor 300 can be improved.

[0064] Further, the two side walls of the mounting groove 111 along the circumferential direction of the shell body 1 limit and position the magnetic steel 2, which can effectively improve the stability of the connection between the magnetic steel 2 and the shell body 1, avoid the problem of the falling of the magnetic steel 2, thereby the structural stability of the secondary assembly 200 can be improved, and the stability and reliability of the motor 300 can be improved. It can also avoid the movement of the magnetic steel 2, thereby the possibility of the sweeping phenomenon caused by the collision and friction between the magnetic steel 2 and the primary assembly 4 can be reduced, thereby the smooth operation of the motor 300 can be ensured, and the service life of the shell 100 and the motor 300 can be prolonged.

[0065] According to the shell 100 of the embodiment of the utility model, the mounting groove 111 for mounting the magnetic steel 2 is arranged on the inner circumferential wall of the shell body 1 of the shell 100, the mounting groove 111 is multiple and arranged at intervals along the circumferential direction of the shell body 1, the mounting groove 111 can limit and position the magnetic steel 2, which can effectively improve the stability of the connection between the magnetic steel 2 and the shell body 1, avoid the problem of the falling of the magnetic steel 2, thereby the structural stability of the secondary assembly 200 can be improved, and the stability and reliability of the motor 300 can be improved. It can also reduce the possibility of the sweeping phenomenon caused by the movement of the magnetic steel 2, thereby the smooth operation of the motor 300 can be ensured.

[0066] In some embodiments of the utility model, as shown in Figures 4-6 、 Figure 9 and Figure 10 , the opening 112 of the mounting groove 111 is smaller than the width of the bottom wall 113 of the mounting groove 111 in the circumferential direction of the shell body 1, which can limit and position the magnetic steel 2 in the radial direction of the shell body 1, and can limit the magnetic steel 2 in the mounting groove 111, avoiding the eccentricity caused by the movement of the magnetic steel 2 towards the radial inner side of the shell body 1, thereby avoiding the collision and friction between the magnetic steel 2 and the primary assembly 4, and preventing the phenomenon of sweeping the bore, which can ensure the smooth operation of the motor 300, and also helps to prolong the service life of the shell 100 and the motor 300. It can further improve the stability of the connection between the magnetic steel 2 and the shell body 1, avoid the problem of falling of the magnetic steel 2, and thus improve the structural stability of the secondary assembly 200, and further improve the stability and reliability of the motor 300.

[0067] In some embodiments of the utility model, as shown in Figures 3-10 , the shell body 1 comprises an outer shell 11 and a limiting tooth 12, the limiting tooth 12 is connected with the inner wall of the outer shell 11, the limiting tooth 12 extends along the axial direction of the outer shell 11, the limiting tooth 12 is a plurality of limiting teeth 12 arranged along the circumferential direction of the outer shell 11, and any two adjacent limiting teeth 12 and the inner wall of the outer shell 11 define a mounting groove 111. By dividing the shell body 1 into the outer shell 11 and the limiting tooth 12, the structure is simple and easy to realize, and any two adjacent limiting teeth 12 can form a mounting groove 111, and the plurality of limiting teeth 12 can limit the magnetic steel 2, and the limiting tooth 12 extends along the axial direction of the outer shell 11, thereby ensuring that the magnetic steel 2 extends along the axial direction of the outer shell 11, which helps to optimize the magnetic field distribution, thereby improving the thrust and stability of the shell 100.

[0068] In some embodiments of the utility model, as shown in Figure 4 、 Figure 5 and Figure 8 , the limiting tooth 12 comprises a tooth body 121 and a baffle 122, one end of the tooth body 121 is connected with the inner wall of the outer shell 11, the tooth body 121 extends along the axial direction of the shell body 1, the tooth body 121 is provided with a baffle 122 along the circumferential direction of the shell body 1, the baffle 122 is located at one end of the tooth body 121 away from the outer shell 11, and the two baffles 122 located on both sides of the width direction of the mounting groove 111 define an opening 112.

[0069] The structure is simple and easy to realize, the baffle 122 can play a blocking role, the two baffles 122 located on both sides of the width direction of the mounting groove 111 can effectively reduce the width of the opening 112 along the circumferential direction of the shell body 1, the magnetic steel 2 is limited between the baffle 122 and the bottom wall 113 of the mounting groove 111, so that the mounting groove 111 can limit and position the magnetic steel 2 in the radial direction of the shell body 1, avoid the magnetic steel 2 moving towards the radial inner side of the shell body 1 to produce the phenomenon of sweeping the bore, and effectively improve the stability of the connection between the magnetic steel 2 and the shell body 1, avoid the problem of the magnetic steel 2 falling off, thereby the structural stability of the secondary assembly 200 can be improved, and the stability and reliability of the motor 300 can be improved.

[0070] In some embodiments of the utility model, as shown in Figure 4 and Figure 8 , the baffle 122 extends along the axial direction of the outer shell 11, so that the baffle 122 can limit the magnetic steel 2 in the axial direction of the outer shell 11, thereby ensuring that the magnetic steel 2 does not move in the axial direction of the shell 100 to cause the phenomenon of sweeping the bore, and the service life of the shell 100 and the motor 300 can be further prolonged and the stable operation of the motor 300 can be further ensured.

[0071] In some embodiments of the utility model, the baffle 122 includes a plurality of sub-baffles, at least one side of the tooth body 121 is provided with a plurality of sub-baffles along the circumferential direction of the outer shell 11, and the plurality of sub-baffles are arranged at intervals along the axial direction of the outer shell 11. Therefore, the plurality of sub-baffles can limit the magnetic steel 2 in the axial direction of the outer shell 11, thereby ensuring that the magnetic steel 2 does not move in the axial direction of the shell 100 to cause the phenomenon of sweeping the bore, and the service life of the shell 100 and the motor 300 can be further prolonged and the stable operation of the motor 300 can be further ensured.

[0072] In some embodiments of the utility model, as shown in Figure 4 , Figure 5 and Figure 8 , the thickness of the baffle 122 is less than 2mm along the radial direction of the shell body 1, the shell 100 is sleeved on the primary assembly 4, that is, the baffle 122 is located between the magnetic steel 2 and the primary assembly 4, and if the thickness of the baffle 122 along the radial direction of the shell body 1 is too large, the air gap between the magnetic steel 2 and the primary assembly 4 is too large, which can cause the electromagnetic force to decrease, and is not conducive to the stable operation of the motor 300. Therefore, the thickness of the baffle 122 along the radial direction of the shell body 1 is less than 2mm, which can reduce the gap between the magnetic steel 2 and the primary assembly 4, and is conducive to improving the electromagnetic force generated between the primary assembly 4 and the secondary assembly 200, thereby improving the stability of the operation of the motor 300.

[0073] In some embodiments of the utility model, as shown in Figure 4 and Figure 5 As shown, along the circumferential direction of the shell body 1, the width of the baffle 122 is less than one third of the width of the magnetic steel 2. Along the circumferential direction of the shell body 1, both sides of the width direction of the mounting groove 111 are provided with the baffle 122. If the width of the baffle 122 along the circumferential direction of the shell body 1 is too large, it will cause the contact area between the magnetic steel 2 and the primary assembly 4 to be too small, which is easy to cause the electromagnetic force to drop, and is not conducive to the stable operation of the motor 300. Therefore, the width of the baffle 122 is less than one third of the width of the magnetic steel 2, so that the size of the contact area between the magnetic steel 2 and the primary assembly 4 can be ensured, which is conducive to improving the electromagnetic force generated between the primary assembly 4 and the secondary assembly 200, thereby the stability of the motor 300 operation can be improved.

[0074] In some embodiments of the utility model, as shown in Figure 4 and Figure 5 As shown, in the cross section perpendicular to the axis direction of the shell body 1, the mounting groove 111 is rectangular, and in the direction of the shell body 1 radially inward, the width of the mounting groove 111 along the circumferential direction of the shell body 1 is constant, and the thickness of the tooth body 121 along the circumferential direction of the shell body 1 gradually decreases. The cross section of the mounting groove 111 is formed in a rectangular shape, so that the magnetic steel 2 can be correspondingly formed in a cuboid shape, which is regular and simple in structure, and can reduce the processing difficulty and production cost. In the direction of the shell body 1 radially inward, the width of the mounting groove 111 along the circumferential direction of the shell body 1 is constant, the side wall of the mounting groove 111 can limit the magnetic steel 2 along the circumferential direction of the shell body 1, and at the same time, the baffle 122 reduces the width of the opening 112, so that the mounting groove 111 can limit the magnetic steel 2 in the radial direction of the shell body 1, and the structure design is reasonable.

[0075] At the same time, the thickness of the side of the tooth body 121 close to the outer shell 11 along the circumferential direction of the outer shell 11 is larger, which is conducive to improving the structural strength of the side of the tooth body 121 close to the outer shell 11, thereby the stability of the connection between the tooth body 121 and the outer shell 11 can be improved.

[0076] In some embodiments of the utility model, as shown in Figure 9 and Figure 10 As shown, in the cross section perpendicular to the axis direction of the shell body 1, the mounting groove 111 is trapezoidal or fan ring-shaped, and in the direction of the shell body 1 radially inward, the width of the mounting groove 111 along the circumferential direction of the shell body 1 gradually decreases, and the thickness of the limiting tooth 12 along the circumferential direction of the shell body 1 is constant.

[0077] It can be understood that the thickness of the limiting teeth 12 is constant, the processing difficulty and production cost can be reduced, the plurality of limiting teeth 12 are arranged along the circumferential direction of the shell body 1, the width of the mounting groove 111 along the circumferential direction of the shell body 1 gradually decreases in the direction of the radial direction of the shell body 1, so that the mounting groove 111 can limit and position the magnetic steel 2 in the radial direction of the shell body 1, the magnetic steel 2 can be limited in the mounting groove 111, the eccentricity caused by the movement of the magnetic steel 2 to the radial direction of the shell body 1 is avoided, the collision and friction between the magnetic steel 2 and the primary assembly 4 to cause the phenomenon of the swept bore are avoided, and the stable operation of the motor 300 is ensured, the service life of the shell body 100 and the motor 300 is prolonged, the stability of the connection between the magnetic steel 2 and the shell body 1 is effectively improved, the problem of the falling of the magnetic steel 2 is avoided, and the structural stability of the secondary assembly 200 is improved, and the stability and reliability of the motor 300 are improved.

[0078] In some embodiments of the utility model, as shown in Figure 3 、 Figure 4 、 Figure 9 and Figure 10 The limiting tooth 12 and the outer shell 11 are integral processing parts. The connection stability between the limiting tooth 12 and the outer shell 11 can be strengthened, the structural strength of the shell body 100 can be strengthened, the production process of the shell body 1 can be simplified by integral processing, and the production efficiency can be improved.

[0079] In some embodiments of the utility model, as shown in Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The limiting tooth 12 and the outer shell 11 are separate processing parts. The processing difficulty can be reduced by processing the limiting tooth 12 and the outer shell 11 respectively, when one of the limiting tooth 12 and the outer shell 11 is damaged, the whole shell body 1 does not need to be replaced, and the maintenance cost can be reduced.

[0080] In some embodiments of the utility model, as shown in Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The limiting tooth 12 and the outer shell 11 are connected by clamping, the connection stability between the limiting tooth 12 and the outer shell 11 can be ensured, the detachable connection between the limiting tooth 12 and the outer shell 11 can be realized, the later inspection and maintenance are facilitated, the maintenance cost can be reduced, and the assembly efficiency of the shell body 1 is improved by the simple clamping connection.

[0081] In some embodiments of the utility model, as shown in Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the limiting tooth 12 is provided with a first protrusion 123 at one end close to the radial outer side of the shell body 1, and a second protrusion 124 is arranged at both sides of the first protrusion 123 along the circumferential direction of the shell body 1, and the inner circumferential wall of the outer shell 11 is provided with a clamping groove 114 matched with the first protrusion 123, and a matching groove 115 is arranged at both sides of the clamping groove 114 along the circumferential direction of the shell body 1 matched with the second protrusion 124. Through the clamping cooperation of the first protrusion 123 and the clamping groove 114, the limiting and fixing between the limiting tooth 12 and the outer shell 11 in the circumferential direction of the shell body 1 can be realized, and through the clamping cooperation of the second protrusion 124 and the matching groove 115, the limiting and fixing between the limiting tooth 12 and the outer shell 11 in the radial direction of the shell body 1 can be realized. The structure is simple, easy to realize and low in cost, and the connection stability between the limiting tooth 12 and the outer shell 11 can be effectively ensured, so that the structural strength of the shell body 1 is improved.

[0082] The secondary assembly 200 according to the embodiments of the present application is described below.

[0083] The secondary assembly 200 according to the embodiments of the present application comprises the shell 100 and the magnetic steel 2.

[0084] Specifically, as shown in Figures 1-6 and Figure 9 The secondary assembly 200 is used for the motor 300, and the magnetic steel 2 is arranged in the mounting groove 111.

[0085] According to the secondary assembly 200 of the embodiments of the present application, the mounting groove 111 for mounting the magnetic steel 2 is arranged on the inner circumferential wall of the shell body 1 of the shell 100, the mounting groove 111 is multiple and is arranged at intervals along the circumferential direction of the shell body 1, the limiting and positioning of the magnetic steel 2 by the mounting groove 111 can be realized, the stability of the connection between the magnetic steel 2 and the shell body 1 can be effectively improved, the problem of the falling of the magnetic steel 2 can be avoided, and thus the structural stability of the secondary assembly 200 can be improved, and the stability and reliability of the motor 300 can be improved. The possibility of the phenomenon of the magnetic steel 2 moving and sweeping the barrel can be reduced, and thus the smooth operation of the motor 300 can be ensured.

[0086] In some embodiments of the present application, as shown in Figure 5 , Figure 9 and Figure 11As shown, the secondary assembly 200 further comprises a magnetically conductive back plate 3, which is arranged in the mounting groove 111 and between the magnetic steel 2 and the bottom wall 113 of the mounting groove 111, extends along the axial direction of the shell body 1, and is connected with the inner wall of the magnetic steel 2 and the mounting groove 111. It can be understood that the magnetically conductive back plate 3 has magnetism and can efficiently guide the magnetic flux. In the motor 300, the magnetic field generated by the magnetic steel 2 can be more efficiently transmitted and concentrated through the magnetically conductive back plate 3, so as to reduce the leakage and loss of the magnetic field and improve the stability of the magnetic field, thereby facilitating the improvement of the efficiency and performance of the motor 300. At the same time, in the assembly process, if a plurality of magnetic steels 2 are arranged in the same mounting groove 111, the plurality of magnetic steels 2 can be connected with the magnetically conductive back plate 3 first, and then the magnetically conductive back plate 3 and the plurality of magnetic steels 2 are inserted into the mounting groove 111 together, which can effectively reduce the installation difficulty of the plurality of magnetic steels 2, thereby improving the assembly efficiency of the secondary assembly 200.

[0087] In some embodiments of the utility model, as shown in Figure 11 , along the axial direction of the shell body 1, the length of the magnetically conductive back plate 3 is greater than or equal to the length of the magnetic steel 2, so as to ensure the concentrating effect of the magnetically conductive back plate 3 on the magnetic field of the magnetic steel 2 in the axial direction of the shell body 1, better reduce the leakage and loss of the magnetic field, and further improve the stability of the magnetic field, thereby better improving the efficiency and performance of the motor 300. At the same time, in the assembly process, if a plurality of magnetic steels 2 are arranged in the same mounting groove 111, the plurality of magnetic steels 2 can be connected with the same magnetically conductive back plate 3, and then the magnetically conductive back plate 3 and the plurality of magnetic steels 2 are inserted into the mounting groove 111 together, which can effectively reduce the installation difficulty of the plurality of magnetic steels 2, thereby improving the assembly efficiency of the secondary assembly 200.

[0088] In some embodiments of the utility model, as shown in Figure 5 , Figure 9 and Figure 11 , along the circumferential direction of the shell body 1, the width of the magnetically conductive back plate 3 is greater than or equal to half the width of the magnetic steel 2. If the width of the magnetically conductive back plate 3 is too small, the magnetism of the magnetically conductive back plate 3 itself will weaken, so as to fail to ensure efficient guidance of the magnetic flux. Therefore, the width of the magnetically conductive back plate 3 is greater than or equal to half the width of the magnetic steel 2, so as to ensure the size of the magnetism of the magnetically conductive back plate 3, ensure the concentrating effect of the magnetically conductive back plate 3 on the magnetic field of the magnetic steel 2, better reduce the leakage and loss of the magnetic field, and further improve the stability of the magnetic field, thereby better improving the efficiency and performance of the motor 300.

[0089] In some embodiments of this utility model, the magnetic back plate 3 is bonded to the shell body 1. Glue can be applied to the outer surface of the magnetic back plate 3 first, and then the magnetic back plate 3 can be installed into the mounting groove 111. The adhesive bonding can ensure the connection stability between the magnetic back plate 3 and the shell body 1, and the operation is simple, which is conducive to improving assembly efficiency. At the same time, the adhesive bonding is inexpensive, which can reduce the production cost of the secondary component 200 and the motor 300.

[0090] In some embodiments of this invention, the magnet 2 is bonded or magnetically connected to the magnetically conductive back plate 3. Both the magnet 2 and the magnetically conductive back plate 3 are magnetic and can be attracted together by a magnetic field, simplifying installation and improving assembly efficiency. This also reduces the production costs of the secondary component 200 and the motor 300. Alternatively, the magnet 2 and the magnetically conductive back plate 3 can be bonded together, further improving the connection stability between them. This, in turn, enhances the structural stability of the secondary component 200 and the operational stability and reliability of the motor 300.

[0091] In some embodiments of this utility model, the magnetic back plate 3 is a silicon steel sheet laminate or a soft magnetic composite material. This can improve the magnetic permeability and magnetic conductivity of the magnetic back plate 3, helping it to more effectively transmit and concentrate the magnetic field, thereby reducing magnetic field leakage and loss, and also reducing eddy current losses, which in turn helps to improve the efficiency and performance of the motor 300.

[0092] In some embodiments of this utility model, the magnet 2 is a permanent magnet. For example, the magnet 2 can be made of materials such as neodymium iron boron and samarium cobalt. Permanent magnets have high permeability and strong magnetism, can generate a strong magnetic field, and have high stability and corrosion resistance, which is beneficial to improving the performance of the motor 300.

[0093] In some embodiments of this utility model, the housing 100 is a non-magnetic heat-treated and strengthened aluminum alloy part, which can be protected from electromagnetic field interference, thereby ensuring the stability of the magnetic field inside the motor 300. At the same time, it can also enable the housing 100 to withstand greater loads and stresses, and enhance its resistance to wear and scratches, thereby improving the structural strength of the motor 300.

[0094] The motor 300 according to an embodiment of the present invention includes: a primary component 4 and the aforementioned secondary component 200.

[0095] Specifically, such as Figures 1-3 As shown, the secondary component 200 is sleeved outside the primary component 4 and can move relative to the primary component 4 along the axial direction of the primary component 4.

[0096] According to the embodiment of the present invention, the motor 300 has mounting grooves 111 for mounting magnets 2 on the inner peripheral wall of the housing body 1 of the housing 100. Multiple mounting grooves 111 are spaced apart along the circumferential direction of the housing body 1. This allows the mounting grooves 111 to limit and position the magnets 2, effectively improving the stability of the connection between the magnets 2 and the housing body 1, avoiding the problem of the patch magnets 2 falling off, thereby improving the structural stability of the secondary component 200, and consequently improving the stability and reliability of the motor 300. It also reduces the possibility of the magnets 2 rubbing against the rotor due to movement, thus ensuring the smooth operation of the motor 300.

[0097] The electromagnetic suspension according to an embodiment of the present invention includes: the motor 300 described above.

[0098] According to the electromagnetic suspension of this utility model embodiment, by providing mounting grooves 111 for mounting magnets 2 on the inner peripheral wall of the shell body 1 of the housing 100, and by having multiple mounting grooves 111 spaced apart along the circumferential direction of the shell body 1, the mounting grooves 111 can limit and position the magnets 2, effectively improving the stability of the connection between the magnets 2 and the shell body 1, avoiding the problem of the patch magnets 2 falling off, thereby improving the structural stability of the secondary component 200, and further improving the stability and reliability of the motor 300 and the electromagnetic suspension. It can also reduce the possibility of the magnets 2 rubbing against the rotor due to movement, thus ensuring the smooth operation of the motor 300 and the electromagnetic suspension.

[0099] The vehicle according to an embodiment of the present invention includes: the electromagnetic suspension described above.

[0100] According to the vehicle of this utility model embodiment, by providing mounting grooves 111 for mounting magnets 2 on the inner peripheral wall of the shell body 1 of the housing 100, and by having multiple mounting grooves 111 spaced apart along the circumferential direction of the shell body 1, the mounting grooves 111 can limit and position the magnets 2, effectively improving the stability of the connection between the magnets 2 and the shell body 1, avoiding the problem of the patch magnets 2 falling off, thereby improving the structural stability of the secondary component 200, and further improving the stability and reliability of the motor 300, the electromagnetic suspension, and the vehicle. It can also reduce the possibility of the magnets 2 rubbing against the rotor due to movement, thereby ensuring the smooth operation of the motor 300, the electromagnetic suspension, and the vehicle.

[0101] Other components of the motor 300 according to the embodiments of the present invention, such as the primary component 4, are known to those skilled in the art and will not be described in detail here.

[0102] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A housing, characterized in that, A secondary assembly (200) for a motor (300), the housing (100) comprising: Shell body (1); The inner peripheral wall of the shell body (1) is provided with a mounting groove (111) for mounting a magnet (2). The mounting groove (111) extends along the axial direction of the shell body (1). There are multiple mounting grooves (111) and they are spaced apart along the circumferential direction of the shell body (1). The width of the opening (112) of the mounting groove (111) is smaller than the width of the bottom wall (113) of the mounting groove (111). The shell body (1) includes: an outer shell (11) and limiting teeth (12); the limiting teeth (12) are connected to the inner peripheral wall of the outer shell (11), the limiting teeth (12) extend along the axial direction of the outer shell (11), and the limiting teeth (12) are a plurality of them spaced apart along the circumferential direction of the outer shell (11). Any two adjacent limiting teeth (12) and the inner wall of the outer shell (11) define a mounting groove (111).

2. The housing according to claim 1, characterized in that, The limiting tooth (12) includes: A tooth body (121) has one end connected to the inner peripheral wall of the outer shell (11), and the tooth body (121) extends along the axial direction of the outer shell (1). baffle (122); The tooth body (121) is provided with the baffle (122) along the circumferential direction of the shell body (1). The baffle (122) is located at one end of the tooth body (121) away from the outer shell body (11). The opening (112) is defined between the two baffles (122) located on both sides of the width direction of the mounting groove (111).

3. The housing according to claim 2, characterized in that, The baffle (122) extends along the axial direction of the outer shell (11).

4. The housing according to claim 2, characterized in that, The baffle (122) includes a plurality of sub-baffles. Along the circumferential direction of the outer shell (11), at least one side of the tooth body (121) is provided with a plurality of the sub-baffles, and the plurality of the sub-baffles are spaced apart along the axial direction of the outer shell (11).

5. The housing according to claim 2, characterized in that, Along the radial direction of the shell body (1), the thickness of the baffle (122) is less than 2 mm; And / or, along the circumferential direction of the shell body (1), the width of the baffle (122) is less than one-third of the width of the magnet (2).

6. The housing according to claim 2, characterized in that, On a cross section perpendicular to the axis of the shell body (1), the mounting groove (111) is rectangular. In the radially inward direction of the shell body (1), the width of the mounting groove (111) along the circumferential direction of the shell body (1) remains unchanged, and the thickness of the tooth body (121) along the circumferential direction of the shell body (1) gradually decreases.

7. The housing according to claim 1, characterized in that, On a cross section perpendicular to the axis of the shell body (1), the mounting groove (111) is trapezoidal or fan-shaped. In the radially inward direction of the shell body (1), the width of the mounting groove (111) gradually decreases along the circumferential direction of the shell body (1), while the thickness of the limiting tooth (12) remains unchanged along the circumferential direction of the shell body (1).

8. The housing according to claim 1, characterized in that, The limiting tooth (12) and the outer shell (11) are integrally machined parts.

9. The housing according to claim 1, characterized in that, The limiting tooth (12) and the outer shell (11) are separate machined parts.

10. The housing according to claim 9, characterized in that, The limiting tooth (12) is engaged with the outer shell (11).

11. The housing according to claim 10, characterized in that, The limiting tooth (12) has a first protrusion (123) at one end near the radial outer side of the shell body (1), and a second protrusion (124) is provided on both sides of the first protrusion (123) along the circumferential direction of the shell body (1). The inner circumferential wall of the outer shell body (11) is provided with a snap-fit ​​groove (114) that engages with the first protrusion (123), and the snap-fit ​​groove (114) is provided with a mating groove (115) on both sides of the circumferential direction of the shell body (1) that engages with the second protrusion (124).

12. A secondary component, characterized in that, include: The housing (100) according to any one of claims 1-11; Magnet (2), which is disposed in the mounting groove (111).

13. The secondary component according to claim 12, characterized in that, The secondary component (200) also includes: A magnetic back plate (3) is disposed in the mounting groove (111) and between the magnet (2) and the bottom wall (113) of the mounting groove (111). The magnetic back plate (3) extends along the axial direction of the shell body (1) and is connected to the magnet (2) and the inner wall of the mounting groove (111).

14. The secondary component according to claim 13, characterized in that, Along the axial direction of the shell body (1), the length of the magnetic back plate (3) is greater than or equal to the length of the magnet (2); And / or, along the circumferential direction of the shell body (1), the width of the magnetic back plate (3) is greater than or equal to half the width of the magnet (2).

15. The secondary component according to claim 13, characterized in that, The magnetic back plate (3) is bonded to the shell body (1); And / or, the magnet (2) is bonded or magnetically connected to the magnetic back plate (3).

16. The secondary component according to claim 13, characterized in that, The magnetic backplate (3) is a silicon steel sheet laminate or a soft magnetic composite material.

17. The secondary component according to claim 12, characterized in that, The magnet (2) is a permanent magnet; And / or, the housing (100) is a non-magnetic heat-treated and strengthened aluminum alloy part.

18. An electric motor, characterized in that, include: Primary component (4); According to any one of claims 12-17, the secondary component (200) is sleeved outside the primary component (4) and is movable relative to the primary component (4) along the axial direction of the primary component (4).

19. An electromagnetic suspension, characterized in that, include: The motor (300) according to claim 18.

20. A vehicle, characterized in that, include: The electromagnetic suspension according to claim 19.

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