CN216134341U

CN216134341U - End cover and motor

Info

Publication number: CN216134341U
Application number: CN202122392355.8U
Authority: CN
Inventors: 周靖媛; 陈松勇; 李伟
Original assignee: Welling Wuhu Motor Manufacturing Co Ltd
Current assignee: Welling Wuhu Motor Manufacturing Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-25
Anticipated expiration: 2031-09-30

Abstract

The utility model provides an end cover and a motor, wherein the end cover comprises a cover body, a first positioning part, a second positioning part and a plating layer; the first positioning part extends along the axial direction of the cover body, and the first positioning part is connected with the cover body on the first side of the cover body in the axial direction; the second positioning part is connected with the second side of the first positioning part in the axial direction of the cover body and extends along the radial direction of the cover body and the direction far away from the first positioning part; the coating is arranged on the surfaces of the cover body, the first positioning part and the second positioning part; through the cooperation between the first positioning part, the second positioning part and the BMC shell, the positioning surface for positioning the installation is positioned on the upper end surface of the BMC shell, and a step surface for positioning on the BMC shell is removed. Because the step surface for positioning the installation is not required to be reserved on the BMC shell when the end cover is installed, the phenomenon that the axial space of the stator is occupied due to the step surface is avoided, the stack thickness of the stator is increased, the axial space utilization rate of the motor is increased, and the overall performance of the motor is improved.

Description

End cover and motor

Technical Field

The utility model relates to the field of motors, in particular to an end cover and a motor.

Background

At present, in the related art, the motor generally adopts end caps installed at two ends in the axial direction of the stator to form a bearing chamber for installing a bearing, when the end caps are installed, a step surface needs to be left on a Bulk Molding Compound (BMC) shell for positioning when the end caps are installed, and when the step surface of the BMC shell is used for positioning when the end caps are installed, the problem that the step surface occupies the axial space of the stator core is caused.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the utility model proposes an end cap.

A second aspect of the utility model proposes an electric machine.

In view of this, the first aspect of the present invention provides an end cap, which includes a cap body, a first positioning portion, a second positioning portion, and a plating layer; the first positioning part extends along the axial direction of the cover body, and the first positioning part is connected with the cover body on the first side of the cover body in the axial direction; the second positioning part is connected with the second side of the first positioning part in the axial direction of the cover body and extends along the radial direction of the cover body and the direction far away from the first positioning part; the plating layer is arranged on the surfaces of the cover body, the first positioning part and the second positioning part.

In the utility model, the end cover comprises a cover body, a first positioning part and a second positioning part, and through the matching of the first positioning part, the second positioning part and the BMC shell, a positioning surface for positioning the installation is positioned on the upper end surface of the BMC shell, and a step surface for positioning on the BMC shell is removed. Because no longer need leave the step face that is used for fixing a position the installation on the BMC casing when the installation end cover, avoided crowding because of setting up the step face and taking up stator axial space, thereby stator stack thickness has been increased, the axial space utilization of motor has been increased, the motor wholeness ability has been promoted, and, it has the cladding material to cover on the surface of end cover, the cladding material wholly covers at the lid, on the surface of first location portion and second location portion, through covering the cladding material on the end cover, can effectively hinder oxygen element and end cover body material's surface to produce chemical reaction, the chemical stability of steel improves by a wide margin, corrosion-resistant ability is improved.

Further, the first positioning portion extends along the axial direction of the cover body, the first side in the axial direction of the cover body is connected with the cover body, and the surface of the first positioning portion is a smooth surface. First location portion can pass through the contact with stator module's cavity inner wall and extrude each other, has realized the lid in radial ascending location, has promoted the end cover stability and the connection steadiness after the end cover installation to, mutually support through first location portion and stator module's cavity inner wall, can guarantee the axiality with the motor after the end cover installation, reduce motor vibration, improve motor operating stability, assurance installation size precision that simultaneously can be fine. The second location portion is connected with the second side of first location portion on the axial direction of lid, and the direction that first location portion was kept away from along the radial direction orientation of lid to the second location portion extends, when installing the motor with the end cover, and the second location portion supports and leans on in stator module's tip, and then realizes the axial positioning to the lid. The first positioning part is pressed into the inner wall of the cavity of the stator assembly until the second positioning part is pressed into the positioning end face of the stator assembly, the first positioning part is superposed with the inner circle of the cavity of the stator assembly, the first positioning part extends along the axial direction, and the second positioning part extends along the radial direction, so that the first positioning part is vertical to the second positioning part, when the end cover is installed, the first positioning part is attached to the end face of the stator assembly, the first positioning part can drive the second positioning part to move to a specified installation position, the first positioning part and the second positioning part can automatically correct the installation position for the installation of the end cover, after the end cover is installed, the end face of the stator assembly can form a positioning effect on the second positioning part, the second positioning part is clamped with the end face of the stator assembly, and the stability and the connection stability of the end cover after the end cover is installed are further improved, and the coaxiality of the end cover and the motor after installation is further ensured, the vibration of the motor is reduced, and the running stability of the motor is improved.

Furthermore, the manufacturing material of the end cover is a non-magnetic metal material, specifically a non-magnetic steel plate, such as a stainless steel plate, a high-manganese non-magnetic structural steel, a high-nickel austenitic stainless steel and the like, and the end cover is manufactured by using the non-magnetic material, so that the problem of end leakage magnetic flux generated when a stator magnetic field and a rotor magnetic field pass through the end cover can be effectively reduced, the operation efficiency of the motor is improved, the non-magnetic steel has good mechanical properties, the structural strength of the end cover can be effectively improved by using the non-magnetic material to manufacture the end cover, and the service life of the motor is prolonged.

Furthermore, the cover body is made of non-magnetic stainless steel sheet metal parts, the problem of end magnetic flux leakage generated when the magnetic fields of the stator and the rotor pass through the position of the cover body can be effectively solved by manufacturing the cover body by using the non-magnetic stainless steel materials, and the stainless steel sheet metal parts have good structural strength and can improve the overall structural strength of the end cover.

Further, the preparation method of the coating of the coated steel plate can be hot dip coating or electroplating, and a proper coating preparation method is adopted, so that the coating is prevented from falling off during the use period, and the coating is ensured to stably exert the protective capability.

In addition, the end cover in the above technical solution provided by the present invention may further have the following additional technical features:

in one embodiment of the present invention, the second positioning portion is annular, and an inner ring of the second positioning portion is connected to the second side of the first positioning portion.

In this technical scheme, the overall structure of second location portion presents the annular structure form, and the inner circle border of the annular structure of second location portion links together with the second side outer lane border of first location portion, and the second location portion of annular structure extends along the radial direction orientation of lid and keeps away from the direction of first location portion.

Specifically, when installing the end cover to the motor, press in annular structure's first location portion into annular structure's stator module's cavity inner wall, until on the second location portion of impressing contacts stator module's location terminal surface, in order to accomplish the location of end cover, the end cover installation is accomplished the back, stator module's annular structure terminal surface can form the location effect to annular structure's second location portion, make the annular embedded structure of stator module's terminal surface and annular second location portion form the embedding joint, the end cover stability and the connection steadiness after the further end cover installation have been improved, and further guaranteed the axiality with the motor after the end cover installation, reduce motor vibration, improve motor operating stability.

In one technical scheme of the utility model, the end cover further comprises a third positioning part; the third positioning part is connected with the outer ring of the second positioning part and extends along the axial direction of the cover body.

In the technical scheme, the end cover structure is further provided with a third positioning part, and the third positioning part is connected with the outer ring edge of the second positioning part and extends along the axial direction of the cover body.

Specifically, third location portion arranges along the outer lane border of second location portion, is certain angle towards stator module with second location portion, when installing stator module with the end cover, can install third location portion embedding in the mounting groove of seting up in advance on stator module, under the interact of third location portion and stator module's mounting groove, can guarantee the axiality after the installation and hang down straightness, can fine assurance installation size precision simultaneously.

In one aspect of the present invention, the number of the second positioning portions is plural, and the plural second positioning portions are arranged in a circumferential direction of the first positioning portion.

In this technical scheme, the quantity of second location portion can be designed as a plurality ofly, arrange with the certain distance interval between a plurality of second location portions, and arrange along the circumference of first location portion, through designing second location portion into a plurality of forms, can reduce the material quantity of second location portion, reduce material cost, thereby reduce equipment manufacturing cost, and, arrange through the circumference of certain distance interval along first location portion, can make the original result of use of second location portion can not reduce, realize the location effect to the end cover, can guarantee axiality and the straightness that hangs down after the end cover installation, can fine assurance installation size precision simultaneously.

In one aspect of the present invention, the cover, the first positioning portion, and the second positioning portion are an integral structure.

In this technical scheme, the lid of end cover, first location portion and second location portion formula structure as an organic whole, through stretching a whole panel, mode realization integral type processing methods such as punching press are formed, because the integrated into one piece preparation mode is through carrying out whole stretching or punching press to panel and accomplish, the structure itself need not to carry out extra connected mode and can accomplish the manufacturing of body structure, therefore, the integrated into one piece preparation mode need not extra means and carries out the connection between the part, the preparation flow of body structure has been reduced, the cost of manufacture of body structure has been saved, and, because need not extra connected mode, the integrated into one piece structure has structural strength height, the high characteristics of whole steadiness, therefore, the integrated into one piece structure is reducing the preparation flow, can improve the structural strength and the steadiness of body greatly on the basis of saving the cost of manufacture.

In one technical scheme of the utility model, the coating is a zinc-aluminum-magnesium alloy coating.

In the technical scheme, the material of the plating layer is mainly a zinc-aluminum-magnesium alloy plating layer, the zinc-aluminum-magnesium alloy plating layer has excellent red rust resistance and self-healing corrosion resistance of a shearing section, and simultaneously has good welding performance, the zinc-aluminum-magnesium alloy plating layer overcomes the defects that a common plating layer cannot effectively protect shearing break points, plating leakage points and plating layer damage positions, when the plating layer is damaged due to collision or other reasons, the zinc-aluminum-magnesium alloy plating layer can automatically repair the plating layer at the damaged part through the self-healing property of the zinc-aluminum-magnesium alloy plating layer, and the overall protection capability of the plating layer on the end cover is ensured.

Furthermore, the coating material can also be silicon, iron, tin, chromium, nickel and the like, and the use of the material can reduce the cost of the coating material and provide better protection effect for the surface of the end cover.

In one technical scheme of the utility model, the mass ratio of zinc to aluminum to magnesium in the zinc-aluminum-magnesium alloy coating is 97.25:1.5: 1.25.

In the technical scheme, the mass ratio of zinc-aluminum-magnesium components in the zinc-aluminum-magnesium alloy coating is 97.25:1.5:1.25, and the zinc-aluminum-magnesium coating configured according to the component ratio can fully exert the protection effect of the coating, improve the chemical stability of steel and improve the corrosion resistance.

In one technical scheme of the utility model, in the zinc-aluminum-magnesium alloy coating, the mass percent of zinc is more than or equal to 96.5 percent and less than or equal to 98 percent; in the zinc-aluminum-magnesium alloy coating, the mass percent of aluminum is more than or equal to 1 percent and less than or equal to 2 percent; in the zinc-aluminum-magnesium alloy coating, the mass percent of magnesium is more than or equal to 1 percent and less than or equal to 1.5 percent.

In the technical scheme, the mass percent of zinc in the zinc-aluminum-magnesium alloy coating is 96.5-98%; the mass percent of the aluminum is 1 to 2 percent; the mass percent of the magnesium is 1 to 1.5 percent. By using the component proportion to prepare the zinc-aluminum-magnesium coating, the protection effect of the coating can be fully exerted, the chemical stability of steel is improved, the corrosion resistance is improved, and the material cost and the production cost are reduced on the basis.

In one technical scheme of the utility model, the thickness of the plating layer is more than or equal to 5.5 micrometers and less than or equal to 12.8 micrometers.

In the technical scheme, the thickness of the plating layer is 5.5-12.8 microns, and when the thickness of the plating layer is set to be the thickness, the protection effect of the plating layer can be ensured, the manufacturing cost can be saved on the basis of ensuring the protection effect, and the manufacturing complexity is reduced.

In one technical scheme of the utility model, the end cover further comprises an electromagnetic shielding coating; the electromagnetic shielding coating is coated on the plating layer.

In the technical scheme, the surface of the plating layer is covered with the electromagnetic shielding coating, the electromagnetic shielding coating plays a role in electromagnetic shielding for the end cover, the electromagnetic shielding coating can provide enough electromagnetic shielding effect for the end cover even if the end cover is not manufactured by using a non-magnetic-conductive material, and the manufacturing cost of the electromagnetic shielding coating is far lower than that of the non-magnetic-conductive material, so that the material cost can be reduced on the basis of providing the enough electromagnetic shielding effect for the end cover by using the electromagnetic shielding coating, and further the production cost is reduced.

In one embodiment of the present invention, the width of the first positioning portion is 1 mm or more and 5 mm or less.

In the technical scheme, the width of the first positioning part is set to be larger than or equal to 1 mm and smaller than or equal to 5 mm, so that the using effect of the first positioning part can be ensured under the condition of the width, the manufacturing cost can be saved on the basis of ensuring the using effect, and the manufacturing complexity is reduced.

Further, the width of the first positioning portion may be set to 1 mm.

Further, the width of the first positioning portion may be set to 2 mm.

Further, the width of the first positioning portion may be set to 5 mm.

Specifically, first location portion extends along the axial direction of lid, be connected with the lid in the ascending first side of lid axial direction, first location portion can extrude each other through the contact with stator module's cavity inner wall, guarantee the end cover stability and the connection steadiness after the end cover installation, and, mutually support through the cavity inner wall of first location portion and stator module, can guarantee the axiality with the motor after the end cover installation, reduce motor vibration, improve motor operating stability, guarantee installation size precision that simultaneously can be fine. In one embodiment of the present invention, the width of the second positioning portion is greater than or equal to 1 mm and less than or equal to 5 mm.

In this technical scheme, set up the width of second location portion into more than or equal to 1 millimeter, and less than or equal to 5 millimeters, can guarantee the result of use of second location portion under this width circumstances, can save manufacturing cost on the basis of guaranteeing the result of use again, reduce and make the complexity.

Further, the width of the second positioning portion may be set to 1 mm.

Further, the width of the second positioning portion may be set to 3 mm.

Further, the width of the second positioning portion may be set to 5 mm.

Specifically, second location portion is connected with first location portion at the ascending second side of the axial direction of lid, second location portion extends along the radial direction orientation of lid and keeps away from the direction of first location portion, when installing the motor with the end cover, in the cavity inner wall of stator module is impressed into first location portion, until impress on the location terminal surface that second location portion contacted stator module, in order to accomplish the location of end cover, the end cover installation is accomplished the back, stator module's terminal surface can form the location effect to second location portion, make second location portion and stator module's terminal surface form the joint, the end cover stability after the end cover installation with connect the steadiness has further been improved, and further guaranteed the axiality with the motor after the end cover installation, reduce motor vibration, improve motor operating stability.

In a second aspect, the utility model provides an electrical machine comprising an end cap as in any of the above claims.

The motor provided by the utility model comprises the end cover of any technical scheme, so that the motor has all the beneficial effects of the end cover, and the details are not repeated.

In one technical scheme of the utility model, the motor further comprises a stator assembly and a rotor assembly; the stator component is provided with a cavity; the rotor assembly is inserted into the cavity; the end cover is buckled at the first end of the cavity in the axial direction of the stator assembly, the first positioning part is matched with the inner wall of the cavity, and the second positioning part is matched with the end part of the stator assembly.

In this technical scheme, the motor is provided with the cavity including stator module and rotor subassembly in stator module, and the rotor subassembly is inserted and is established in stator module's cavity, and the first end of end cover lock in stator module cavity is ascending. First location portion can with stator module's cavity inner wall adaptation, make first location portion can with stator module's cavity inner wall extrude each other, guarantee the end cover stability and the connection steadiness after the end cover installation to, mutually support through first location portion and stator module's cavity inner wall, can guarantee the axiality of end cover installation back and motor, reduce motor vibration, improve motor operating stability, assurance installation size precision that simultaneously can be fine. In addition, the second positioning part can be matched with the end part of the stator assembly, and the coaxiality and the verticality after installation can be ensured through the interaction of the second positioning part and the end part of the stator assembly, and meanwhile, the installation size precision can be well ensured. The stator assembly is prevented from being provided with a BMC step surface for positioning when the bottom of the end cover is used for positioning and mounting, and the axial space utilization rate of the motor is greatly increased.

In one technical scheme of the utility model, the first positioning part is in interference fit with the inner wall of the cavity.

In this technical scheme, the inner wall interference fit of first location portion and stator module's cavity, utilize stator module's material elasticity to make stator module's cavity inner wall enlarge, warp, pack the end cover into in the cavity, the inner wall that makes first location portion and stator module's cavity is accurate, stable contact, just can produce the power of cramping to first location portion when stator module's cavity inner wall recovers, make the end cover together with stator module's cavity zonulae occludens, connected mode through interference fit, the structure complexity has been reduced, the power bearing capacity has been improved, impact resistance has been improved, overall structure intensity has been promoted.

In one technical scheme of the utility model, the motor further comprises a first bearing and a second bearing; the first bearing is arranged on the stator component, sleeved on the rotor component and positioned at the second end of the cavity in the axial direction of the stator component; the second bearing is arranged on the cover body and sleeved on the rotor assembly.

In the technical scheme, a first bearing and a second bearing are installed in the motor, the first bearing is located at the second end of the cavity in the axial direction of the stator assembly, the first bearing is installed on the stator assembly and sleeved on the rotor assembly, and the second bearing is arranged on the cover body and sleeved on the rotor assembly. Through setting up first bearing and second bearing, can hold up the rotor subassembly in stator module, make the rotor subassembly can rotate at stator module, realize the rotation of motor under the electric current effect.

In one technical scheme of the utility model, the inner wall of the cavity is smoothly arranged from the first end of the cavity to the second end of the cavity.

In the technical scheme, the inner wall of the cavity of the stator assembly is smoothly arranged from the first end of the cavity to the second end of the cavity, so that the structural complexity can be reduced, the manufacturing difficulty can be reduced, the probability that the inner wall of the cavity of the stator assembly is scratched when the rotor assembly rotates can be reduced, the rotation flexibility can be improved, and the operation efficiency can be improved.

In one aspect of the present invention, the motor comprises an injection molded motor.

In the technical scheme, the motor comprises an injection molding motor.

Specifically, after the stator coil is wound on the stator core, the stator core and the stator coil are connected together in a stable manner by injection molding, so that the manufacturing complexity can be reduced and the manufacturing cost can be reduced by injection molding connection, and the connection stability and the structural strength can be improved.

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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows one of the end cap configurations according to one embodiment of the present invention.

Fig. 2 shows an enlarged schematic view of an end cap structure according to an embodiment of the utility model.

Figure 3 shows a second schematic view of an end cap configuration according to an embodiment of the utility model.

Fig. 4 shows a schematic view of a motor structure according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

100 covers, 200 first positioning parts, 300 second positioning parts, 500 stator components, 502 stators, 504 shells, 510 rotor components, 512 rotors, 514 rotating shafts, 520 first bearings and 530 second bearings.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

End caps and motors according to some embodiments of the utility model are described below with reference to fig. 1-4.

The embodiment provides an end cover, which particularly comprises the following technical characteristics.

As shown in fig. 1 and 2, the end cap includes: a cover body 100, a first positioning portion 200, and a second positioning portion 300; the first positioning portion 200 extends in the axial direction of the cover 100, and the first positioning portion 200 is connected to the cover 100 on a first side in the axial direction of the cover 100; the second positioning portion 300 is connected to a second side of the first positioning portion 200 in the axial direction of the cover 100, and extends in the radial direction of the cover 100 and in a direction away from the first positioning portion 200.

In the utility model, the end cap comprises a cover body 100, a first positioning part 200 and a second positioning part 300, and through the cooperation between the first positioning part 200 and the second positioning part 300 and the BMC shell, a positioning surface for positioning the installation is positioned on the upper end surface of the BMC shell, and a step surface for positioning on the BMC shell is removed. Because the step surface used for positioning the installation is not required to be reserved on the BMC shell when the end cover is installed, the phenomenon that the axial space of the stator 502 assembly is occupied due to the step surface is avoided, so that the stack thickness of the stator 502 assembly is increased, the axial space utilization rate of the motor is increased, and the overall performance of the motor is improved.

Further, the first positioning portion 200 extends in the axial direction of the lid body 100, and is connected to the lid body 100 on a first side in the axial direction of the lid body 100, and the surface of the first positioning portion 200 is a smooth surface. First location portion 200 can pass through the contact with stator module 500's cavity inner wall and extrude each other, has realized lid 100 in radial ascending location, has promoted the end cover stability and the connection steadiness after the end cover installation to, mutually support through first location portion 200 and stator module 500's cavity inner wall, can guarantee the axiality with the motor after the end cover installation, reduce motor vibration, improve motor operating stability, assurance installation size precision that simultaneously can be fine. The second positioning portion 300 is connected to the second side of the first positioning portion 200 in the axial direction of the cover 100, the second positioning portion 300 extends along the radial direction of the cover 100 toward the direction away from the first positioning portion 200, and when the end cover is mounted to the motor, the second positioning portion 300 abuts against the end of the stator assembly 500, thereby achieving the axial positioning of the cover 100. The first positioning part 200 is pressed into the inner wall of the cavity of the stator assembly 500 until the second positioning part 300 is pressed into contact with the positioning end face of the stator assembly 500, the first positioning part 200 is overlapped with the inner circle of the cavity of the stator assembly 500, the first positioning part 200 extends along the axial direction, and the second positioning part 300 extends along the radial direction, so that the first positioning part 200 is perpendicular to the second positioning part 300, when the end cover is installed, the first positioning part 200 is attached to the end face of the stator assembly 500, the first positioning part 200 can drive the second positioning part 300 to move to a specified installation position, the first positioning part 200 and the second positioning part 300 can automatically correct the installation position for the installation of the end cover, after the end cover is installed, the end face of the stator assembly 500 can form a positioning effect on the second positioning part 300, and the second positioning part 300 is clamped with the end face of the stator assembly 500, the stability and the connection steadiness of the end cover after the end cover is installed are further improved, the coaxiality of the end cover after the end cover is installed and the motor is further ensured, the vibration of the motor is reduced, and the running stability of the motor is improved.

Furthermore, the cover body 100 is a non-magnetic stainless steel sheet metal part, and the cover body 100 is made of the non-magnetic stainless steel material, so that the problem of end magnetic flux leakage generated when the magnetic fields of the stator and the rotor pass through the position of the cover body 100 can be effectively solved, and the stainless steel sheet metal part has good structural strength and can improve the overall structural strength of the end cover.

The present embodiment provides an end cap, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 2 and 3, the second positioning portion 300 has a ring shape, and an inner ring of the second positioning portion 300 is connected to a second side of the first positioning portion 200.

In this embodiment, the overall structure of the second positioning portion 300 is in the form of an annular structure, an inner ring edge of the annular structure of the second positioning portion 300 is connected with a second side outer ring edge of the first positioning portion 200, and the second positioning portion 300 of the annular structure extends in a radial direction of the cover body 100 toward a direction away from the first positioning portion 200.

Further, when the end cover is installed on the motor, the first positioning portion 200 of the annular structure is pressed into the inner wall of the cavity of the stator assembly 500 of the annular structure until the second positioning portion 300 is pressed into contact with the positioning end face of the stator assembly 500, so as to complete the positioning of the end cover, after the end cover is installed, the annular structure end face of the stator assembly 500 can form a positioning effect on the second positioning portion 300 of the annular structure, the annular embedded structure of the end face of the stator assembly 500 and the annular second positioning portion 300 form an embedded joint, the stability and the connection stability of the end cover after the end cover is installed are further improved, the coaxiality of the end cover after the end cover is installed and the motor is further guaranteed, the vibration of the motor is reduced, and the operation stability of the motor is improved.

The end cap further includes: a third positioning part; the third positioning portion is connected to the outer ring of the second positioning portion 300 and extends in the axial direction of the cover body 100.

In this embodiment, a third positioning portion is further provided on the end cover structure of the present invention, and the third positioning portion is connected to the outer rim of the second positioning portion 300 and extends along the axial direction of the cover body 100.

Further, third location portion arranges along the outer lane border of second location portion 300, is certain angle towards stator module 500 with second location portion 300, when installing stator module 500 with the end cover, can install third location portion embedding in the mounting groove of seting up in advance on stator module 500, under the interact of third location portion and stator module 500's mounting groove, can guarantee the axiality after the installation and hang down straightness, can fine assurance installation size precision simultaneously.

The number of the second positioners 300 is plural, and the plural second positioners 300 are arranged in the circumferential direction of the first positioner 200.

In this embodiment, the number of the second positioning portions 300 may be designed to be plural, a plurality of the second positioning portions 300 are arranged at intervals with a certain distance therebetween, and are arranged along the circumferential direction of the first positioning portion 200, by designing the second positioning portions 300 to be plural forms, the material usage amount of the second positioning portions 300 can be reduced, the material cost is reduced, thereby reducing the manufacturing cost of the device, and, by arranging along the circumferential direction of the first positioning portion 200 with a certain distance therebetween, the original use effect of the second positioning portions 300 can not be reduced, the positioning effect of the end cap is realized, the coaxiality and the verticality after the end cap is installed can be ensured, and the installation size accuracy can be well ensured.

As shown in fig. 1 and 3, the cover 100, the first positioning portion 200, and the second positioning portion 300 are of an integral structure.

In this embodiment, the cover body 100, the first positioning portion 200 and the second positioning portion 300 of the end cap are of an integral structure, the integrated processing mode is realized by stretching, stamping and the like to a whole plate, because the integral forming manufacturing mode is completed by integrally stretching or stamping the plate, the structure can complete the manufacturing of the body structure without additional connecting modes, therefore, the integral forming manufacturing mode does not need additional means to connect the components, reduces the manufacturing process of the body structure, saves the manufacturing cost of the body structure, and, because an additional connection mode is not needed, the integrated structure has the characteristics of high structural strength and high overall stability, therefore, the integral structure can greatly improve the structural strength and the stability of the body on the basis of reducing the manufacturing process and saving the manufacturing cost.

The end cap further includes: plating; the plating layer is provided on the surfaces of the cover body 100, the first positioning portion 200, and the second positioning portion 300.

In this embodiment, a plating layer is disposed on the surface of the end cap, the plating layer entirely covers the surfaces of the cover body 100, the first positioning portion 200, and the second positioning portion 300, and the plating layer covers the end cap, so that the chemical reaction between oxygen and the surface of the end cap material can be effectively prevented, the chemical stability of the steel material can be greatly improved, and the corrosion resistance can be improved.

Further, the cover body 100, the first positioning portion 200, and the second positioning portion 300 are provided with plating layers on both surfaces.

The plating layer is a zinc-aluminum-magnesium alloy plating layer.

In this embodiment, the material of the plating layer is mainly a zinc-aluminum-magnesium alloy plating layer, the zinc-aluminum-magnesium alloy plating layer has excellent red rust resistance and self-healing anticorrosion property of a shearing section, and simultaneously has good welding performance, the zinc-aluminum-magnesium alloy plating layer overcomes the defects that a common plating layer cannot effectively protect shearing break points, plating leakage points and plating layer damage positions, and when the plating layer is damaged due to collision or other reasons, the zinc-aluminum-magnesium alloy plating layer can automatically repair the plating layer at the damaged position through the self-healing property of the zinc-aluminum-magnesium alloy plating layer, so that the protection capability of the plating layer on the whole end cover is ensured. Furthermore, the coating material can also be silicon, iron, tin, chromium, nickel and the like, and the use of the material can reduce the cost of the coating material and provide better protection effect for the surface of the end cover.

In the zinc-aluminum-magnesium alloy coating, the mass ratio of zinc to aluminum to magnesium is 97.25:1.5: 1.25.

In this example, the mass ratio of zinc to aluminum to magnesium in the zinc-aluminum-magnesium alloy plating layer was 97.25:1.5:1.25, and the zinc-aluminum-magnesium alloy plating layer prepared by the above composition ratio sufficiently exerts the protective effect of the plating layer, improves the chemical stability of the steel material, and improves the corrosion resistance.

In the zinc-aluminum-magnesium alloy coating, the mass percent of zinc is more than or equal to 96.5 percent and less than or equal to 98 percent; in the zinc-aluminum-magnesium alloy coating, the mass percent of aluminum is more than or equal to 1 percent and less than or equal to 2 percent; in the zinc-aluminum-magnesium alloy coating, the mass percent of magnesium is more than or equal to 1 percent and less than or equal to 1.5 percent.

In the embodiment, the mass percent of zinc in the zinc-aluminum-magnesium alloy coating is 96.5-98%; the mass percent of the aluminum is 1 to 2 percent; the mass percent of magnesium is 1-1.5%, the zinc-aluminum-magnesium coating is prepared by using the component proportion, the protection effect of the coating can be fully exerted, the chemical stability of steel is improved, the corrosion resistance is improved, the material cost is reduced on the basis, and the production cost is further reduced.

Furthermore, in the zinc-aluminum-magnesium alloy coating, the mass percent of aluminum is 1.63-1.81%; the mass percent of the magnesium is 1.05 percent to 1.24 percent, and the rest part of the components are mainly zinc.

The thickness of the plating layer is more than or equal to 5.5 micrometers and less than or equal to 12.8 micrometers.

In the embodiment, the thickness of the plating layer is 5.5 to 12.8 microns, and when the thickness of the plating layer is set to be the thickness, the protection effect of the plating layer can be ensured, the manufacturing cost can be saved on the basis of ensuring the protection effect, and the manufacturing complexity is reduced.

The end cap further includes: an electromagnetic shielding coating; the electromagnetic shielding coating is coated on the plating layer.

In the embodiment, the surface of the plating layer is covered with the electromagnetic shielding coating, the electromagnetic shielding coating plays a role of electromagnetic shielding for the end cover, the electromagnetic shielding coating can provide enough electromagnetic shielding effect for the end cover even if the end cover is not manufactured by using a non-magnetic-conductive material, and the manufacturing cost of the electromagnetic shielding coating is far lower than that of the non-magnetic-conductive material, so that the material cost can be reduced on the basis of providing enough electromagnetic shielding effect for the end cover by using the electromagnetic shielding coating, and further the production cost is reduced.

As shown in fig. 2, the width L1 of the first positioning portion 200 is 1 mm or more and 5 mm or less.

In this embodiment, the width L1 of the first positioning portion 200 is set to be greater than or equal to 1 mm and less than or equal to 5 mm, so that the using effect of the first positioning portion 200 can be ensured, and the manufacturing cost and the manufacturing complexity can be reduced on the basis of ensuring the using effect.

Further, the width L1 of the first positioning portion 200 may be set to 1 mm.

Further, the width L1 of the first positioning portion 200 may be set to 2 mm.

Further, the width L1 of the first positioning portion 200 may be set to 5 mm.

Further, first location portion 200 extends along the axial direction of lid 100, be connected with lid 100 at the ascending first side of lid 100 axial direction, first location portion 200 can pass through the contact with stator module 500's cavity inner wall and extrude each other, guarantee the end cover stability and the connection steadiness after the end cover installation, and, the cavity inner wall through first location portion 200 and stator module 500 mutually supports, can guarantee the axiality with the motor after the end cover installation, reduce motor vibration, improve motor operating stability, the assurance installation size precision that simultaneously can be fine.

As shown in fig. 2, the width L2 of the second positioning portion 300 is 1 mm or more and 5 mm or less.

In this embodiment, the width L2 of the second positioning portion 300 is set to be greater than or equal to 1 mm and less than or equal to 5 mm, so that the using effect of the second positioning portion 300 can be ensured, the manufacturing cost can be saved on the basis of ensuring the using effect, and the manufacturing complexity can be reduced.

Further, the width L2 of the second positioning portion 300 may be set to 1 mm.

Further, the width L2 of the second positioning portion 300 may be set to 3 mm.

Further, the width L2 of the second positioning portion 300 may be set to 5 mm.

Further, the second positioning portion 300 is connected to the second side of the first positioning portion 200 in the axial direction of the cover 100, the second positioning portion 300 extends in the direction away from the first positioning portion 200 along the radial direction of the cover 100, when the end cover is installed on the motor, the first positioning portion 200 is pressed into the inner wall of the cavity of the stator assembly 500 until the second positioning portion 300 is pressed into the positioning end face of the stator assembly 500, so as to complete the positioning of the end cover, after the end cover is installed, the end face of the stator assembly 500 can form a positioning effect on the second positioning portion 300, so that the second positioning portion 300 is clamped with the end face of the stator assembly 500, the stability and the stability of connection of the end cover after the end cover is installed are further improved, the coaxiality of the end cover and the motor after the end cover is installed is further ensured, the vibration of the motor is reduced, and the operation stability of the motor is improved.

An embodiment of the utility model provides an electric machine comprising an end cap as in any of the embodiments described above.

As shown in fig. 4, the motor provided by the present invention has all the advantages of the end cover according to any of the embodiments described above, and therefore, the description thereof is omitted.

The present embodiment provides a motor, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 4, the motor further includes: stator assembly 500 and rotor assembly 510; stator assembly 500 includes stator 502 and housing 504, and rotor assembly 510 includes rotor 512 and rotating shaft 514; the stator assembly 500 is provided with a cavity; the rotor assembly 510 is inserted into the cavity; the end cap is fastened to the first end of the cavity in the axial direction of the stator assembly 500, the first positioning portion 200 is adapted to the inner wall of the cavity, and the second positioning portion 300 is adapted to the end of the stator assembly 500.

In this embodiment, the motor includes a stator assembly 500 and a rotor assembly 510, a cavity is disposed in the stator assembly 500, the rotor assembly 510 is inserted into the cavity of the stator assembly 500, and the end cap is fastened to a first end of the cavity of the stator assembly 500 in the axial direction. First location portion 200 can with stator module 500's cavity inner wall adaptation, make first location portion 200 can extrude each other with stator module 500's cavity inner wall, guarantee the end cover stability and the connection steadiness after the end cover installation, and, mutually support through first location portion 200 and stator module 500's cavity inner wall, can guarantee the axiality with the motor after the end cover installation, reduce motor vibration, improve motor operating stability, guarantee installation size precision that simultaneously can be fine. In addition, the second positioning part 300 can be matched with the end part of the stator assembly 500, and the coaxiality and the verticality after installation can be ensured and the installation size precision can be well ensured through the interaction of the second positioning part 300 and the end part of the stator assembly 500. The stator assembly 500 is prevented from being provided with a BMC step surface for positioning when the bottom of the end cover is used for positioning and mounting, and the axial space utilization rate of the motor is greatly increased.

As shown in fig. 4, the first positioning portion 200 is in interference fit with the inner wall of the cavity.

In this embodiment, the inner wall interference fit of first positioning portion 200 and stator module 500's cavity, utilize stator module 500's material elasticity to make stator module 500's cavity inner wall enlarge, warp, pack the end cover into in the cavity, make the inner wall accuracy of first positioning portion 200 and stator module 500's cavity, stable contact, just can produce the power of cramping to first positioning portion 200 when stator module 500's cavity inner wall recovers, make the end cover and stator module 500's cavity zonulae occludens together, connected mode through interference fit, the structural complexity has been reduced, the power bearing capacity has been improved, impact resistance has been improved, overall structure intensity has been promoted.

As shown in fig. 4, the motor further includes: a first bearing 520 and a second bearing 530; the first bearing 520 is disposed on the stator assembly 500, sleeved on the rotor assembly 510, and located at a second end of the cavity in the axial direction of the stator assembly 500; the second bearing 530 is disposed on the cover 100 and sleeved on the rotor assembly 510.

In this embodiment, a first bearing 520 and a second bearing 530 are installed in the motor, the first bearing 520 is located at a second end of the cavity in the axial direction of the stator assembly 500, installed on the stator assembly 500 and sleeved on the rotor assembly 510, and the second bearing 530 is disposed on the cover body 100 and sleeved on the rotor assembly 510. By providing the first bearing 520 and the second bearing 530, the rotor assembly 510 can be supported in the stator assembly 500, so that the rotor assembly 510 can rotate in the stator assembly 500, and the rotation of the motor can be realized under the action of current.

As shown in fig. 4, the inner wall of the cavity is smoothly arranged from the first end of the cavity to the second end of the cavity.

In this embodiment, the inner wall of the cavity of the stator assembly 500 is smoothly arranged from the first end of the cavity to the second end of the cavity, so that the structural complexity can be reduced, the manufacturing difficulty can be reduced, the probability that the rotor assembly 510 scratches the inner wall of the cavity of the stator assembly 500 during rotation can be reduced, the rotation flexibility can be improved, and the operation efficiency can be improved.

The motor includes: the motor is moulded plastics.

In this embodiment, the motor comprises an injection molded motor.

Further, after the stator coil is wound on the stator core, injection molding is carried out between the stator core and the stator coil, so that the stator core and the stator coil are firmly connected together, the manufacturing complexity can be reduced through an injection molding connection mode, the manufacturing cost is reduced, the connection stability can be improved, and the structural strength is improved.

In the claims, the specification and the drawings of the specification of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description, and do not indicate or imply that the referred device or element must have the described specific orientation, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data specifically.

In the claims, specification, and drawings that follow the present disclosure, the description of the terms "one embodiment," "some embodiments," "specific embodiments," and so forth, 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 present disclosure. In the claims, specification and drawings of the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An end cap, comprising:

a cover body;

a first positioning portion extending in an axial direction of the cover, the first positioning portion being connected to the cover on a first side in the axial direction of the cover;

a second positioning portion connected to a second side of the first positioning portion in the axial direction of the cover body, and extending in a radial direction of the cover body and in a direction away from the first positioning portion;

a plating layer provided on surfaces of the lid body, the first positioning portion, and the second positioning portion.

2. The end closure of claim 1,

the second positioning part is annular, and the inner ring of the second positioning part is connected with the second side of the first positioning part.

3. The end closure of claim 1, further comprising:

and the third positioning part is connected with the outer ring of the second positioning part and extends along the axial direction of the cover body.

4. The end closure of claim 1,

the number of the second positioning portions is plural, and the plural second positioning portions are arranged along the circumferential direction of the first positioning portion.

5. The end closure of claim 1,

the cover body, the first positioning part and the second positioning part are of an integrated structure.

6. The end closure of claim 1,

the coating is a zinc-aluminum-magnesium alloy coating.

7. The end closure of claim 1,

the thickness of the plating layer is greater than or equal to 5.5 micrometers and less than or equal to 12.8 micrometers.

8. The end closure of claim 1, further comprising:

and the electromagnetic shielding coating is coated on the coating.

9. The end cap of any one of claims 1-8,

the width of the first positioning part is greater than or equal to 1 mm and less than or equal to 5 mm.

10. The end cap of any one of claims 1-8,

the width of the second positioning part is more than or equal to 1 mm and less than or equal to 5 mm.

11. An electrical machine comprising an end cap according to any one of claims 1 to 10.

12. The electric machine of claim 11, further comprising:

the stator assembly is provided with a cavity;

the rotor assembly is inserted into the cavity;

the end cover is buckled at the first end of the cavity in the axial direction of the stator assembly, the first positioning part is matched with the inner wall of the cavity, and the second positioning part is matched with the end part of the stator assembly.

13. The electric machine of claim 12,

the first positioning part is in interference fit with the inner wall of the cavity.

14. The electric machine of claim 12, further comprising:

the first bearing is arranged on the stator component, sleeved on the rotor component and positioned at the second end of the cavity in the axial direction of the stator component;

and the second bearing is arranged on the cover body and sleeved on the rotor assembly.

15. The electric machine of claim 12,

the inner wall of the cavity is smoothly arranged from the first end of the cavity to the second end of the cavity.

16. The electrical machine according to any of the claims 11 to 15,

the motor comprises an injection molding motor.