Motor casing and motor thereof

Abstract

The invention discloses a motor casing and a motor thereof. The technical problems that an existing motor cannot work underwater for a long time and is poor in waterproof sealing performance, high in maintenance cost, low in operation efficiency and the like are mainly solved. According to the technical scheme, the motor shell is characterized in that the motor shell comprises an upper end cover, a shell body and a lower end cover, the upper end cover and the lower end cover are arranged at the upper end and the lower end of the shell body respectively, the upper end cover comprises a plurality of upper end cover upper end face parts and upper end cover upper end step parts, and the upper end cover upper end step parts are formed on the upper end face of the upper end cover; the upper end cover upper end step part is positioned between the adjacent upper end cover upper end surface parts in the plurality of upper end cover upper end surface parts; the lower end cover comprises a plurality of lower end cover upper end face parts and lower end cover upper end step parts, the lower end cover upper end step parts are formed on the upper end face of the lower end cover, and the lower end cover upper end step parts are located between the adjacent lower end cover upper end face parts in the plurality of lower end cover upper end face parts; the motor is mainly applied to motors.

Description

Technical Field

[0001] The invention relates to the technical field of underwater operation of an oil-cooled motor, in particular to a motor housing and a motor thereof. Background Art

[0002] At present, the improvement of the sealing structure of the motor in the existing motors is usually to connect an oil seal to the end cover shaft to seal the motor. Some motors also have one or more mechanical seals in the upper end cover to seal the motor. There are few solutions to the problem of external water or other liquids entering the motor. There is basically no improvement on the lower end cover of the motor. The existing motors cannot guarantee long-term operation underwater. Summary of the invention

[0003] The purpose of the present invention is to provide a motor housing and a motor thereof which can work for a long time underwater, has strong sealing performance, can continue to work even when water enters, and can reduce production cost and maintenance cost.

[0004] The technical solution adopted by the present invention to solve its technical problem is: A motor shell, comprising an upper end cover, a shell body and a lower end cover, wherein the upper end cover and the lower end cover are respectively arranged at the upper and lower ends of the shell body, the upper end cover comprises a plurality of upper end cover upper end face portions and an upper end cover upper end step portion, the plurality of upper end cover upper end face portions include the upper end face of the upper end cover and have different heights, the upper end step portion of the upper end cover is formed on the upper end face of the upper end cover, and the upper end step portion of the upper end cover is located between the upper end face portions of the adjacent upper end covers among the plurality of upper end cover upper end face portions The plurality of upper end cover upper end face portions of the upper end cover include a first upper end cover upper end face portion to an nth upper end cover upper end face portion, the height of the nth upper end cover upper end face portion is higher than the height of the (n-1)th upper end cover upper end face portion, and the height of the nth upper end cover upper end face portion is lower than the height of the (n-2)th upper end cover upper end face portion, and the first upper end cover upper end face portion to the nth upper end cover upper end face portion are arranged inwardly along the outer circumference of the upper end of the upper end cover, wherein n is an integer greater than 3; The upper end cover includes a plurality of upper end cover lower end face portions and an upper end cover lower end step portion, the plurality of upper end cover lower end face portions include the lower end face of the upper end cover and have different heights, the upper end cover lower end step portion is formed on the lower end face of the upper end cover, the upper end cover lower end step portion is located between adjacent upper end cover lower end face portions among the plurality of upper end cover lower end face portions, the plurality of upper end cover lower end face portions of the upper end cover include the first upper end cover lower end face portion to the mth upper end cover lower end face portion, the height of the (m-1)th upper end cover lower end face portion is higher than the height of the mth upper end cover lower end face portion, and the height of the (m-1)th upper end cover lower end face portion is higher than the height of the mth upper end cover lower end face portion, and the first upper end cover lower end face portion to the mth upper end cover lower end face portion are arranged along the lower end periphery of the upper end cover inwardly, wherein m is an integer greater than 3.

[0005] The multiple upper end cover upper end face portions of the upper end cover of the present invention include a first upper end cover upper end face portion, a second upper end cover upper end face portion and a third upper end cover upper end face portion, the height of the third upper end cover upper end face portion is higher than the height of the second upper end cover upper end face portion, and the height of the third upper end cover upper end face portion is lower than the height of the first upper end cover upper end face portion, and the first upper end cover upper end face portion, the second upper end cover upper end face portion and the third upper end cover upper end face portion are arranged in an inward direction along the upper periphery of the upper end of the upper end cover.

[0006] The plurality of upper end cover upper end surface portions of the present invention include the first upper end cover upper end surface portion to the nth upper end cover upper end surface portion, and the first upper end cover upper end surface portion to the (n-1)th upper end cover upper end surface portion are arranged in decreasing height inward direction along the upper end outer circumference of the upper end cover.

[0007] The multiple upper end cover upper end face portions of the upper end cover of the present invention include a first upper end cover upper end face portion, a second upper end cover upper end face portion, a third upper end cover upper end face portion and a fourth upper end cover upper end face portion, the height of the fourth upper end cover upper end face portion is higher than the height of the third upper end cover upper end face portion, the height of the first upper end cover upper end face portion is higher than the height of the second upper end cover upper end face portion, and the height of the second upper end cover upper end face portion is higher than the height of the third upper end cover upper end face portion, and the first upper end cover upper end face portion, the second upper end cover upper end face portion and the third upper end cover upper end face portion are arranged in decreasing height in sequence along the upper periphery of the upper end of the upper end cover inward direction.

[0008] The upper end cover of the present invention comprises a plurality of upper end cover lower end face portions and an upper end cover lower end step portion, the plurality of upper end cover lower end face portions include the lower end face of the upper end cover and have different heights, the upper end cover lower end step portion is formed on the lower end face of the upper end cover, the upper end cover lower end step portion is located between adjacent upper end cover lower end face portions among the plurality of upper end cover lower end face portions, the plurality of upper end cover lower end face portions of the upper end cover comprise the first upper end cover lower end face portion to the mth upper end cover lower end face portion, the height of the (m-1)th upper end cover lower end face portion is higher than the height of the first upper end cover lower end face portion, and at the same time, the height of the (m-1)th upper end cover lower end face portion is higher than the height of the mth upper end cover lower end face portion, the first upper end cover lower end face portion to the mth upper end cover lower end face portion are arranged along the lower end periphery of the upper end cover inwardly, wherein m is an integer greater than 3.

[0009] The multiple upper end cover lower end face portions of the present invention include a first upper end cover lower end face portion, a second upper end cover lower end face portion and a third upper end cover lower end face portion, the height of the second upper end cover lower end face portion is higher than the height of the first upper end cover lower end face portion, and the height of the second upper end cover lower end face portion is higher than the height of the third upper end cover lower end face portion, and the first upper end cover lower end face portion, the second upper end cover lower end face portion and the third upper end cover lower end face portion are arranged inwardly along the outer periphery of the lower end of the upper end cover.

[0010] The multiple upper end cover lower end face portions of the present invention include the first upper end cover lower end face portion, the second upper end cover lower end face portion to the mth upper end cover lower end face portion, and the second upper end cover lower end face portion to the mth upper end cover lower end face portion are arranged in decreasing height inward direction along the lower end periphery of the upper end cover.

[0011] The multiple upper end cover lower end face portions of the upper end cover of the present invention include a first upper end cover lower end face portion, a second upper end cover lower end face portion, a third upper end cover lower end face portion and a fourth upper end cover lower end face portion, the height of the first upper end cover lower end face portion is lower than the height of the second upper end cover lower end face portion, the height of the second upper end cover lower end face portion is higher than the height of the third upper end cover lower end face portion, and the height of the third upper end cover lower end face portion is higher than the height of the fourth upper end cover lower end face portion, and the second upper end cover lower end face portion, the third upper end cover lower end face portion and the fourth upper end cover lower end face portion are arranged in decreasing height in sequence along the outer circumference of the lower end of the upper end cover inward direction.

[0012] The lower end cover of the present invention comprises a plurality of lower end cover upper end face portions and a lower end cover upper end step portion, the plurality of lower end cover upper end face portions include the upper end face of the lower end cover and have different heights, the lower end cover upper end step portion is formed on the upper end face of the lower end cover, the lower end cover upper end step portion is located between adjacent lower end cover upper end face portions among the plurality of lower end cover upper end face portions, the plurality of lower end cover upper end face portions of the lower end cover comprise the first lower end cover upper end face portion to the xth lower end cover upper end face portion, the height of the xth lower end cover upper end face portion is higher than the height of the (x-1)th lower end cover upper end face portion, and the height of the (x-1)th lower end cover upper end face portion is lower than the height of the first lower end cover upper end face portion, the first lower end cover upper end face portion to the xth lower end cover upper end face portion are arranged inwardly along the outer circumference of the upper end of the lower end cover, wherein x is an integer greater than 3.

[0013] The multiple lower end cover upper end face portions of the lower end cover of the present invention include a first lower end cover upper end face portion, a second lower end cover upper end face portion and a third lower end cover upper end face portion, the height of the third lower end cover upper end face portion is higher than the height of the second lower end cover upper end face portion, and the height of the second lower end cover upper end face portion is lower than the height of the first lower end cover upper end face portion, and the first lower end cover upper end face portion, the second lower end cover upper end face portion and the third lower end cover upper end face portion are arranged inwardly along the outer circumference of the upper end of the lower end cover.

[0014] The plurality of lower end cover upper end surface portions of the present invention include the 1st lower end cover upper end surface portion to the xth lower end cover upper end surface portion, and the 1st lower end cover upper end surface portion to the (x-1)th lower end cover upper end surface portion are arranged in decreasing height inward direction along the upper end outer circumference of the lower end cover.

[0015] The multiple lower end cover upper end face portions of the lower end cover of the present invention include a first lower end cover upper end face portion, a second lower end cover upper end face portion, a third lower end cover upper end face portion and a fourth lower end cover upper end face portion, the height of the fourth lower end cover upper end face portion is higher than the height of the third lower end cover upper end face portion, the height of the first lower end cover upper end face portion is higher than the height of the second lower end cover upper end face portion, and the height of the second lower end cover upper end face portion is higher than the height of the third lower end cover upper end face portion, and the first lower end cover upper end face portion, the second lower end cover upper end face portion and the third lower end cover upper end face portion are arranged in decreasing height in sequence along the upper periphery of the lower end of the lower end cover inward direction.

[0016] The multiple lower end cover upper end face portions of the present invention include the first lower end cover upper end face portion, the second lower end cover upper end face portion to the xth lower end cover upper end face portion, and the second lower end cover upper end face portion to the xth lower end cover upper end face portion can also be arranged in increasing height in sequence along the upper end periphery of the lower end cover inwardly.

[0017] The multiple lower end cover upper end face portions of the lower end cover of the present invention include a first lower end cover upper end face portion, a second lower end cover upper end face portion, a third lower end cover upper end face portion and a fourth lower end cover upper end face portion, the height of the first lower end cover upper end face portion is higher than the height of the second lower end cover upper end face portion, the height of the fourth lower end cover upper end face portion is higher than the height of the third lower end cover upper end face portion, and the height of the third lower end cover upper end face portion is higher than the height of the second lower end cover upper end face portion, and the second lower end cover upper end face portion, the third lower end cover upper end face portion and the fourth lower end cover upper end face portion are arranged in increasing height in sequence along the upper periphery of the lower end of the lower end cover inward direction.

[0018] The upper end surface portions of the multiple lower end covers of the present invention are combined together to increase the internal capacity of the lower end cover, thereby ensuring the possibility of long-term operation of the motor.

[0019] The lower end cover of the present invention comprises a plurality of lower end cover lower end face portions and a lower end step portion, the plurality of lower end cover lower end face portions include the lower end face of the lower end cover and have different heights, the lower end step portion of the lower end cover is formed on the lower end face of the lower end cover, the lower end step portion of the lower end cover is located between adjacent lower end face portions of the plurality of lower end cover lower end face portions, the plurality of lower end cover lower end face portions of the lower end cover comprise the 1st lower end face portion to the yth lower end face portion, the height of the yth lower end face portion is higher than the height of the (y-1)th lower end face portion, the 1st lower end face portion to the yth lower end face portion are arranged in sequence along the lower end periphery of the lower end of the lower end cover inwardly, wherein y is an integer greater than 2.

[0020] The first to yth lower end cover lower end face portions of the present invention are arranged in increasing heights in sequence along the inner direction of the lower end periphery of the lower end of the lower end cover.

[0021] The multiple lower end face portions of the lower end cover of the present invention include a first lower end face portion, a second lower end face portion, a third lower end face portion and a fourth lower end face portion, the height of the first lower end face portion is lower than the height of the second lower end face portion, the height of the fourth lower end face portion is higher than the height of the third lower end face portion, and the height of the third lower end face portion is higher than the height of the second lower end face portion, and the first lower end face portion, the second lower end face portion, the third lower end face portion and the fourth lower end face portion are arranged in increasing height in sequence along the outer circumference of the lower end of the lower end of the lower end cover inwardly.

[0022] The lower end cover of the present invention also includes a rear pressure piece, which includes a plurality of rear pressure piece upper end face portions and a rear pressure piece upper end step portion, the plurality of rear pressure piece upper end face portions include the upper end face of the rear pressure piece and have different heights, the rear pressure piece upper end step portion is formed on the upper end face of the rear pressure piece, the rear pressure piece upper end step portion is located between adjacent rear pressure piece upper end face portions among the plurality of rear pressure piece upper end face portions, the plurality of rear pressure piece upper end face portions of the rear pressure piece include the 1st rear pressure piece upper end face portion to the yth rear pressure piece upper end face portion, the height of the yth rear pressure piece upper end face portion is lower than the height of the (y-1)th rear pressure piece upper end face portion, and the 1st rear pressure piece upper end face portion to the yth rear pressure piece upper end face portion are arranged in sequence along the upper periphery of the rear pressure piece inward, wherein y is an integer greater than 2.

[0023] The upper end face portions of the 1st to yth rear pressure pieces of the lower end cover of the present invention are arranged in decreasing heights in the direction inwardly along the outer circumference of the upper end of the rear pressure piece.

[0024] The multiple rear pressure piece upper end face portions of the rear pressure piece of the present invention include a first rear pressure piece upper end face portion, a second rear pressure piece upper end face portion, a third rear pressure piece upper end face portion and a fourth rear pressure piece upper end face portion, the height of the first rear pressure piece upper end face portion is higher than the height of the second rear pressure piece upper end face portion, the height of the second rear pressure piece upper end face portion is higher than the height of the third rear pressure piece upper end face portion, the height of the third rear pressure piece upper end face portion is higher than the height of the fourth rear pressure piece upper end face portion, and the first rear pressure piece upper end face portion, the second rear pressure piece upper end face portion, the third rear pressure piece upper end face portion and the fourth rear pressure piece upper end face portion are arranged in descending height along the upper periphery of the rear pressure piece inward.

[0025] The rear pressure member of the present invention includes a rear pressure sealing member, the multiple lower end cover lower end face portions of the lower end cover include the 1st lower end cover lower end face portion to the yth lower end cover lower end face portion, the multiple rear pressure member upper end face portions of the rear pressure member include the 1st rear pressure member upper end face portion to the yth rear pressure member upper end face portion, the multiple lower end cover lower end face portions of the lower end cover correspond to the multiple rear pressure member upper end face portions of the rear pressure member, the 1st rear pressure member upper end face portion corresponds to the 1st lower end cover lower end face portion, the yth rear pressure member upper end face portion corresponds to the yth lower end cover lower end face portion, and the 1st rear pressure member upper end face portion is contacted and fixed to the 1st lower end cover lower end face portion via a rear pressure sealing member.

[0026] The upper end surface of the lower end cover of the present invention is provided with a lower oil hole, and the upper end surface of the lower end cover is connected to the lower end surface of the lower end cover through the lower oil hole; the rear pressure piece also includes a rear pressure piece lower end surface, and the upper end surface of the rear pressure piece is provided with a water hole, and the upper end surface of the rear pressure piece is connected to the lower end surface of the rear pressure piece through the water hole.

[0027] The upper end cover of the present invention also includes a mounting member A, which includes a lower end face portion a of the mounting member A and a lower end face portion b of the mounting member A. The mounting member A is arranged on the upper end face portions of the upper end covers other than the upper end face portions of the (n-1)th upper end cover and the upper end face portions of the nth upper end cover, the lower end face portion a of the mounting member A is in contact with the upper end face portion of the upper end cover, and the lower end face portion b of the mounting member A is opposite to the oil seal space S, and the oil seal space S is an oil seal space formed by a combination of the upper end face portion of the nth upper end cover of the upper end cover to the upper end face portion of the upper end cover where the mounting member A is arranged and the upper end step portion of the upper end cover.

[0028] The oil seal space and / or the interior of the motor of the present invention mainly carries insulating oil, and its functions include: first, to channel and cool the heat generated by the rotation of the motor; second, to guide the water entering the motor from the motor shaft gap to the inner periphery of the motor or the bottom of the motor, and will not directly enter the motor to affect the operation of the motor.

[0029] The mounting member A of the present invention further comprises a hole, and the motor shaft is allowed to pass through the mounting member A through the hole.

[0030] Preferably, the upper end surface of the mounting member A / mounting member B of the present invention is flush with the first upper end cover upper end surface portion of the upper end cover to form a whole.

[0031] The upper end cover of the present invention also includes a mounting member B, which is arranged on the upper end face portions of the upper end covers other than the upper end face portion of the (n-1)th upper end cover and the upper end face portion of the nth upper end cover, and the mounting member B includes a first side end face portion, a second side end face portion and a mounting member B step portion, the first side end face portion and the second side end face portion have different outer diameters, the first side end face portion is larger than the outer diameter of the second side end face portion, that is, the distance from the first side end face portion to the center of the mounting member B is larger than the distance from the second side end face portion to the center of the mounting member B, the mounting member B step portion is located between the first side end face portion and the second side end face portion, the mounting member B step portion of the mounting member B is in contact with the upper end face portion of the upper end cover, and the second side end face portion of the mounting member B is in contact with the upper end step portion of the upper end cover.

[0032] The mounting member B of the present invention further comprises an upper end face portion of the mounting member B and a lower end face portion of the mounting member B, wherein the upper end face portion of the mounting member B comprises a protruding portion, wherein the protruding portion is formed on the upper end face portion of the mounting member B and protrudes outwardly from the mounting member B, wherein the height of the upper end face portion of the protruding portion is lower than the upper end face portion of the upper end cover where the mounting member B is located, that is, the upper end face portion of the upper end cover where the mounting member B is located is the upper end face portion of the third upper end cover, and the height of the upper end face portion of the protruding portion is lower than the upper end face portion of the second upper end cover.

[0033] The mounting member B of the present invention further comprises a hole B, and the hole B allows the motor shaft to pass through the mounting member B.

[0034] The upper end cover of the present invention is provided with an upper oil hole and a wire outlet hole, and the upper oil hole and the wire outlet hole are respectively connected to the lower end surface of the second upper end cover.

[0035] The outlet hole on the upper end cover of the present invention is also provided with a cable gland, and the upper oil hole is also provided with an oil plug.

[0036] The upper end cover of the present invention further comprises an axial hole, which is arranged on the upper end surface of the nth upper end cover and the lower end surface of the mth upper end cover, mainly to allow the motor shaft to penetrate the upper end cover and extend outward.

[0037] Preferably, the height of the lower end surface portion of the (m-1)th upper end cover of the present invention is higher than the height of the upper end surface portion of the nth upper end cover.

[0038] The motor of the present invention comprises any one of the above-mentioned motor housing, stator component, rotor component and motor shaft, wherein the stator component is installed in the motor housing, the rotor component is arranged in the stator component, the motor shaft passes through the rotor component and is fixedly connected to the rotor component, and one end of the motor shaft passes through the upper end cover of the motor housing and extends to the outside of the motor housing.

[0039] The motor of the present invention comprises any one of the above-mentioned motor housing, stator component, rotor component and motor shaft, wherein the rotor component is installed in the motor housing, the stator component is arranged in the rotor component, the motor shaft passes through the stator component and the rotor component and is fixedly connected to the rotor component, and one end of the motor shaft passes through the upper end cover of the motor housing and extends to the outside of the motor housing.

[0040] The upper end cover and the lower end cover of the present invention are respectively provided with bearings, one end of the motor shaft is connected to the bearing of the lower end cover, and the other end of the motor shaft is connected to the bearing of the upper end cover and passes through the upper end cover to the outside of the motor housing.

[0041] The oil storage space L is formed by combining a plurality of lower end cover upper end surface portions and an upper end step portion of the lower end cover of the present invention.

[0042] The multiple lower end cover lower end surface parts and the lower end step part of the lower end cover of the present invention are combined with the rear pressure seal to form an oil sealing space E.

[0043] The multiple upper end face portions and the upper end step portions of the rear pressure piece of the present invention are combined with the rear pressure seal to form a water space F; when the motor is placed underwater, external water enters the water space F, and the balancing lower end face portion and the lower end step portion are combined with the rear pressure seal to form an oil sealing space E.

[0044] A detection and maintenance device is provided in the oil storage space L of the present invention, and the detection and maintenance device includes a detection and alarm device. The detection and alarm device is arranged on the upper step portion of the lower end cover to detect changes in the amount of oil stored in the oil storage space L. When the amount of oil stored in the oil storage space L is sensed to be at different capacities, different alarms are issued to provide reminders.

[0045] The detection and maintenance device of the present invention also includes a maintenance hole, which is arranged on the upper step portion of the lower end cover. The maintenance hole passes through the lower end cover, and a maintenance plug is provided at the outer end of the lower end cover. When a large amount of water accumulates in the oil storage space L, the maintenance plug can be removed to release the water in the oil storage space L to ensure that the motor will not be damaged.

[0046] One end of the motor shaft of the present invention extends along the axis and sequentially connects the bearing of the lower end cover, the rotor component, the bearing of the upper end cover and the upper end cover to the outside of the motor housing. A keyway is provided on the end surface of the motor shaft extending outside the motor housing.

[0047] The rear pressure seal of the present invention is made of elastic materials such as perfluororubber, fluororubber, chloroprene rubber, etc., and can ensure that the liquid inside the motor is in a full state through its elasticity.

[0048] The upper end cover of the motor of the present invention comprises a first upper end cover upper end surface portion, a second upper end cover upper end surface portion, a third upper end cover upper end surface portion, a fourth upper end cover upper end surface portion and a fifth upper end cover upper end surface portion, the second upper end cover upper end surface portion is provided with a mounting member A, the mounting member A cooperates with the second upper end cover upper end surface portion and is fixed on the upper end cover, the mounting member A is provided with a hole that cooperates with the motor shaft so that the motor shaft passes through the mounting member A; the fifth upper end surface portion of the upper end cover is a circular end surface, the fifth upper end surface portion of the upper end cover and the upper end step portion between the fifth upper end surface portion of the upper end cover and the fourth upper end surface portion of the upper end cover are combined into a cylindrical shape; the fifth upper end surface portion of the upper end cover is provided with an axial hole connected to the inner end surface of the upper end cover.

[0049] A first seal is disposed on the upper end surface portion of the fifth upper end cover of the present invention, and the first seal is connected to the motor shaft.

[0050] The upper end cover of the motor of the present invention includes a first upper end cover lower end surface portion, a second upper end cover lower end surface portion and a third upper end cover lower end surface portion, wherein the third upper end cover lower end surface portion is a circular end surface, and the third upper end cover lower end surface portion and the lower end step portion between the third upper end cover lower end surface portion and the second upper end cover lower end surface portion are combined into a cylindrical shape; the axial hole of the fifth upper end cover upper end surface portion is connected to the third upper end cover lower end surface portion.

[0051] The mounting member B of the present invention is arranged on the 3rd upper end face portion of the upper end cover in the oil seal space formed by the combination of the 2nd upper end cover upper end face portion, the 3rd upper end cover upper end face portion, the 4th upper end cover upper end face portion, the 5th upper end cover upper end face portion and the upper end step portion of the upper end cover, the mounting member B step portion of the mounting member B is matched and connected with the 3rd upper end face portion, the first side end face portion of the mounting member B is matched with the upper end step portion between the 2nd upper end cover upper end face portion and the 3rd upper end cover upper end face portion, the second side end face portion of the mounting member B is matched with the upper end step portion between the 3rd upper end cover upper end face portion and the 4th upper end cover upper end face portion, and the mounting member B is provided with a hole matched with the motor shaft so that the motor shaft passes through the mounting member B.

[0052] A second sealing member is provided on the protruding portion of the mounting member B of the present invention, and the second sealing member is connected to the motor shaft.

[0053] The first upper end cover upper end surface of the upper end cover of the present invention is provided with an upper oil hole and a wire outlet hole, and the upper oil hole and the wire outlet hole are respectively connected to the second upper end cover lower end surface of the upper end cover.

[0054] The motor housing of the present invention comprises the upper end cover, the housing body and the lower end cover, the upper end cover and the lower end cover are respectively arranged at the upper and lower ends of the motor housing, the upper end surface of the housing body is provided with a first end wing which matches with the inner end surface of the upper end cover, the first end wing is provided with a fourth sealing groove on the inner end surface close to the upper end cover, the fourth sealing groove is provided with a sealing ring, preferably, the sealing ring is a rubber ring, the sealing ring makes the housing body and the upper end cover sealed, the first end wing is provided with a bolt, the first end wing and the inner end surface of the upper end cover are provided with a bolt, The lower end surface of the first upper end cover is fastened and connected by bolts; a second end wing with the same / similar structure as the first end wing is provided on the lower end surface of the shell body, and a lower end cover wing cooperating with the second end wing is provided on the inner end surface of the lower end cover, and a fifth sealing groove is provided on the inner end surface of the second end wing close to the lower end cover, and a sealing ring is provided in the fifth sealing groove. Preferably, the sealing ring is a rubber ring, and the sealing ring seals the shell body and the lower end cover. Bolts are provided on the second end wing, and the second end wing is fastened and connected to the upper end surface of the inner end surface of the lower end cover by bolts.

[0055] An upper magnet seat is arranged on the end of the motor shaft close to the lower end cover, and a lower magnet seat is arranged on the corresponding inner end surface of the lower end cover. The upper magnet seat corresponds to the lower magnet seat, and magnets / magnet groups are respectively arranged on the upper magnet seat and the lower magnet seat. The magnetic poles of the magnets / magnet groups on the upper magnet seat are opposite to those of the magnets / magnet groups on the lower magnet seat, so that the upper magnet seat and the lower magnet seat repel each other, reducing the force released by the motor shaft on the lower end cover, and evenly dispersing the force in one direction to the entire lower end cover.

[0056] In the drawings of the specification, X is the lateral direction of the component, and Y is the vertical direction of the component.

[0057] The height described in the specification includes the height of the upper end face and the height of the lower end face. The height refers to the height in the Y direction in the accompanying drawings, from Y1 to Y2, that is, high to low; at the same time, the Y direction in the accompanying drawings includes Y1 as the upper end direction, that is, the upper end, and Y2 as the lower end direction, that is, the lower end.

[0058] The peripheral inward direction described in the specification refers to the X direction in the drawings, from X1 to X2, that is, from the outside to the inside, and also the direction from the periphery to the center; at the same time, the X direction in the drawings includes X1 as the peripheral direction, that is, the periphery, and X2 as the inner end direction, that is, the inner end.

[0059] The fit or fitting connection described in the specification includes clearance fit, interference fit and transition fit.

[0060] The outer end face of the upper end cover described in the specification usually refers to the end face away from the motor housing after the upper end cover and the motor housing are assembled together. At the same time, the inner end face of the upper end cover refers to the end face connected to the motor housing after the upper end cover and the motor housing are assembled together. The same applies to the outer / inner end faces of the lower end cover.

[0061] The “along the axis” described in the specification usually refers to the direction along the axis, which means along the center line of the motor shaft or along the axis of the motor shaft of the motor, and also refers to the Y direction in the accompanying drawings. All descriptions do not limit the size or area of ​​the components but only describe the direction.

[0062] The main principle of the present invention is: the main working environment of the motor is to work underwater for a long time, and insulating oil is added to the oil seal space of the upper end cover of the motor and the inside of the motor shell for oil sealing. The insulating oil can enter the oil seal space E through the upper oil hole on the oil storage space L, and then the rear pressure seal is affected by the insulating oil, so that the rear pressure seal is deformed and close to the upper end surface of the rear pressure seal, until the inside of the motor shell is full or nearly full or reaches the internal capacity of the motor shell when the rear pressure seal is not deformed. When the motor is placed in water, external water enters the water space F from the water hole of the rear pressure piece, and the rear pressure seal is restored to the initial state by water pressure; When the motor works for a long time or works intermittently or stops working, the first layer of the triple protection of the present invention begins to take effect, and water in the external environment enters the upper end cover of the motor through the gap between the motor shaft and the mounting member A, and is first blocked by the protrusion and / or the second seal, and flows into the space between the mounting member A and the mounting member B, preventing the water from further entering the motor; when the protrusion is filled with external water or the first layer of protection combination structure fails, the second layer of the triple protection begins to take effect, and water in the external environment enters the motor through the gap between the motor shaft and the mounting member B, and is blocked by the last upper end surface portion of the upper end cover and / or the first seal, and is also blocked by the oil seal space filled with insulating oil. The lower end surface portion of the second upper end cover is higher than the last upper end surface portion of the upper end cover to generate negative pressure, effectively preventing water from entering. When the motor works for a long time, the insulating oil flows out of the motor, and water is still likely to penetrate into the motor. At this time, the immiscible property of oil and water is utilized. At the same time, the centrifugal force brought by the rotation of the motor shaft throws the water toward the upper step of the upper end cover and away from the motor shaft. The water accumulates downward along the upper step and remains in the oil seal space to prevent the water from further entering the motor. Furthermore, when the oil seal space is filled with external water, the third layer of triple protection begins to take effect, and the water in the external environment enters the interior of the motor through the gap between the motor shaft and the upper end cover, where it will be blocked by the interior of the motor filled with insulating oil. The immiscible characteristics of oil and water and the centrifugal force brought by the rotation of the motor shaft are used to throw the water toward the inner walls of the motor casing around it, away from the motor shaft and the center of the motor, to prevent the water from entering the working area of ​​the stator and rotor inside the motor. Since water is heavier than oil, the water flows downward along the inner wall of the motor casing and into the lower end cover, without causing damage to the motor. When the detection and maintenance device detects that the amount of oil stored in the oil storage space L is gradually decreasing or the water in the oil storage space L is gradually increasing, the motor sends out different alarms to remind the motor whether it needs repair and maintenance.

[0063] The insulating oil added to the motor of the present invention includes transformer oil, capacitor oil, cable oil and switch oil.

[0064] The beneficial effects of the present invention are as follows: through the unique structural design and the internal space of the oil-sealed motor of the present invention, the triple protection effectively ensures the sealing and waterproofness of the motor, and also ensures the high efficiency of the motor working underwater for a long time, while the maintenance cost is low. Each time, it is only necessary to open the upper end cover and / or the lower end cover and / or the rear pressure piece of the lower end cover for maintenance, and there is no need to perform other maintenance on other components such as the motor stator and rotor, thereby reducing maintenance time and increasing the running time of the motor. In addition, the oil seal can be used to efficiently dissipate heat inside the motor. The motor rotor rotates inside the motor to drive the movement of the oil inside the motor, and the heat generated by the rotation of the stator and rotor is continuously transferred to the motor casing through the oil, and then the motor casing transfers the heat to the external environment, effectively dissipating heat and cooling the motor, ensuring that the motor works efficiently for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1It is a schematic diagram of the cross-sectional structure of a first embodiment of a motor housing; Figure 2 It is a schematic diagram of the cross-sectional structure of the second embodiment of the motor housing; Figure 3 It is a schematic cross-sectional structure diagram of a third embodiment of a motor housing; Figure 4 It is a schematic cross-sectional structure diagram of a fourth embodiment of a motor housing; Figure 5 A top view of a fourth embodiment of a motor housing; Figure 6 It is a schematic cross-sectional structure diagram of a first embodiment of a motor; Figure 7 A top view of a first embodiment of a motor; Figure 8 is a schematic cross-sectional structure diagram of a second embodiment of a motor; Fig. 9 It is a schematic cross-sectional structure diagram of a third embodiment of a motor; Fig.10 is a schematic diagram of the cross-sectional structure of the upper end cover of the second embodiment of the motor; Fig.11 It is a schematic diagram of the cross-sectional structure of the mounting part B of the motor; Fig.12 It is a top view of the mounting part B of the motor; Fig.13 is a schematic diagram of the cross-sectional structure of the lower end cover of the second embodiment of the motor; Fig.14 It is a schematic cross-sectional structure diagram of a first embodiment of a rear pressure piece; Fig.15 It is a top view of the first embodiment of the rear pressure piece.

[0066] In the figure: 1-motor housing, 2-stator component, 3-rotor component, 4-motor shaft, 11-upper end cover, 12-housing body, 13-lower end cover, 113-mounting member A, 1122-shaft hole, 115-first sealing member, 1111-mounting member B, 1113-mounting member B upper end face, 1114-protrusion, 1115-mounting member B lower end face, 1116-hole B, 1131-hole A, 1118-second sealing member, 116-upper end cover wing, 118-upper oil hole, 119-wire outlet hole, 121-first end wing, 122-second end wing, 130-lower end cover wing, 41-keyway, 19a-first upper end cover end face, 19b-the second upper end cover upper end face, 19c-the third upper end cover upper end face, 19d-the fourth upper end cover upper end face, 19e-the fifth upper end cover upper end face, 18a-the first upper end cover lower end face, 18b-the second upper end cover lower end face, 18c-the third upper end cover lower end face, 18d-the fourth upper end cover lower end face, 191a-the upper end step portion, 181a-the upper end step portion of the upper end cover, 1112a-the first side end face, 1112b-the step portion of the mounting member B, 1112c-the second side end face, 1111a-the lower end face portion of the mounting member A, 1111b-the lower end face portion of the mounting member A, 1141-the A bearing groove, 1311-a second bearing groove, 11111-a third sealing groove, 1211-a fourth sealing groove, 1212-a fifth sealing groove, S-an oil seal space, R-a sealing space, 1161-a first upper wing, 1162-a second upper wing, 1321-a lower oil hole, 134-a rear pressure piece, 1322-a cooling chamber, 1323-an oil hole, 1343-a rear pressure piece groove, 1344-a rear pressure seal, 1345-a rear pressure piece water hole, 13a-a first lower end cover upper end face portion, 13b-a second lower end cover upper end face portion, 13c-a third lower end cover upper end face portion, 13d-a fourth lower end cover upper end face portion, 13e-a fifth lower end cover upper end face portion Part, 13f-the 6th lower end cover upper end surface portion, 139a-the lower end cover upper end step portion, 133a-the 1st lower end cover lower end surface portion, 133b-the 2nd lower end cover lower end surface portion, 133c-the 3rd lower end cover lower end surface portion, 138a-the lower end step portion of the lower end cover, 134a-the 1st rear pressure piece upper end surface portion, 134b-the 2nd rear pressure piece upper end surface portion, 134c-the 3rd rear pressure piece upper end surface portion, 1349a-the rear pressure piece upper end step portion, L-oil storage space, E-oil sealing space, F-water space, 137-detection and maintenance device, 1371-detection and alarm device, 1372-repair and maintenance hole, 431-upper magnet seat, 432-lower magnet seat. DETAILED DESCRIPTION

[0067] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0068] Example 1, see Figure 1The present invention discloses a motor shell, which comprises an upper end cover, a shell body and a lower end cover, wherein the upper end cover and the lower end cover are respectively arranged at the upper and lower ends of the shell body, and the upper end cover comprises a first upper end cover upper end face portion 19a, a second upper end cover upper end face portion 19b, a third upper end cover upper end face portion 19c and an upper end step portion 191a, wherein the height of the third upper end cover upper end face portion 19c is higher than the height of the second upper end cover upper end face portion 19b, and the height of the third upper end cover upper end face portion 19c is lower than the height of the first upper end cover upper end face portion 19a, and the first upper end cover upper end face portion 19a, the second upper end cover upper end face portion 19b and the third upper end cover upper end face portion 19c are arranged inwardly along the upper end outer circumference of the upper end cover; The upper end cover further comprises a first upper end cover lower end face portion 18a, a second upper end cover lower end face portion 18b, a third upper end cover lower end face portion 18c and a lower end step portion 181a, wherein the height of the second upper end cover lower end face portion 18b is higher than the height of the first upper end cover lower end face portion 18a, and the height of the second upper end cover lower end face portion 18b is higher than the height of the third upper end cover lower end face portion 18c, and the height of the second upper end cover lower end face portion 18b is higher than the height of the third upper end cover upper end face portion 19c, and the first upper end cover lower end face portion 18a, the second upper end cover lower end face portion 18b and the third upper end cover lower end face portion 18c are arranged inwardly along the outer circumference of the lower end of the upper end cover; A mounting member A113 is also provided on the upper end surface portion 19a of the first upper end cover, and the mounting member A113 includes a mounting member A lower end surface portion a1111a and a mounting member A lower end surface portion b1111b, wherein the mounting member A lower end surface portion a1111a contacts the upper end surface portion 19a of the first upper end cover, and the mounting member A lower end surface portion b1111b is opposite to the oil seal space S, and the oil seal space S is an oil seal space formed by the combination of the second upper end cover upper end surface portion 19b, the third upper end cover upper end surface portion 19c and the upper end step portion 191a of the upper end cover; The lower end cover comprises a plurality of lower end cover upper end face portions and an upper end step portion 139a, the plurality of lower end cover upper end face portions include the upper end face of the lower end cover and have different heights, the upper end step portion is formed on the upper end face of the lower end cover, the upper end step portion is located between adjacent upper end face portions among the plurality of upper end face portions, the plurality of lower end cover upper end face portions of the lower end cover comprise a first lower end cover upper end face portion 13a, a second lower end cover upper end face portion 13b and a third lower end cover upper end face portion 13c, the height of the third lower end cover upper end face portion 13c is higher than the height of the second lower end cover upper end face portion 13b, and the height of the second lower end cover upper end face portion 13b is lower than the height of the first lower end cover upper end face portion 13a, the first lower end cover upper end face portion 13a, the second lower end cover upper end face portion 13b and the third lower end cover upper end face portion 13c are arranged inwardly along the outer circumference of the upper end of the lower end cover; The lower end cover of the present invention includes a plurality of lower end cover lower end face portions and a lower end step portion 138a, wherein the plurality of lower end cover lower end face portions include the lower end face of the lower end cover, the lower end step portion is formed on the lower end face of the lower end cover, and the lower end step portion is located between adjacent lower end face portions among the plurality of lower end face portions, the plurality of lower end cover lower end face portions of the lower end cover include a first lower end cover lower end face portion 133a and a second lower end cover lower end face portion 133b, the height of the second lower end cover lower end face portion 133b is higher than the height of the first lower end cover lower end face portion 133a, and the first lower end cover lower end face portion 133a and the second lower end cover lower end face portion 133b are arranged inwardly along the outer circumference of the lower end of the lower end cover; the second lower end cover upper end face portion 13b, the third lower end cover upper end face portion 13c and the upper end step portion 139a of the lower end cover of the present invention are combined to form an oil storage space L; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0069] Example 2, see Figure 2 The present invention discloses a motor shell, which includes an upper end cover, a shell body and a lower end cover, wherein the upper end cover includes a first upper end cover upper end face portion 19a, a second upper end cover upper end face portion 19b, a third upper end cover upper end face portion 19c and an upper end step portion 191a, wherein the height of the third upper end cover upper end face portion 19c is higher than the height of the second upper end cover upper end face portion 19b, and the height of the third upper end cover upper end face portion 19c is lower than the height of the first upper end cover upper end face portion 19a, and the first upper end cover upper end face portion 19a, the second upper end cover upper end face portion 19b and the third upper end cover upper end face portion 19c are arranged inwardly along the upper end outer circumference of the upper end cover; The upper end cover further comprises a first upper end cover lower end face portion 18a, a second upper end cover lower end face portion 18b, a third upper end cover lower end face portion 18c and a lower end step portion 181a, wherein the height of the second upper end cover lower end face portion 18b is higher than the height of the first upper end cover lower end face portion 18a, and the height of the second upper end cover lower end face portion 18b is higher than the height of the third upper end cover lower end face portion 18c, and the height of the second upper end cover lower end face portion 18b is higher than the height of the third upper end cover upper end face portion 19c, and the first upper end cover lower end face portion 18a, the second upper end cover lower end face portion 18b and the third upper end cover lower end face portion 18c are arranged inwardly along the outer circumference of the lower end of the upper end cover; A mounting member B1111 is also provided on the upper end surface portion 19a of the first upper end cover, and the mounting member B1111 includes a first side end surface portion 1112a, a second side end surface portion 1112c, a mounting member B step portion 1112b and a mounting member B lower end surface portion 1115, the mounting member B step portion 1112b is in contact with the upper end surface portion 19a of the first upper end cover, the second side end surface portion 1112c is matched and connected with the upper end step portion 191a, and the mounting member B lower end surface portion 1115 is opposite to the oil seal space S, and the oil seal space S is an oil seal space formed by the combination of the second upper end cover upper end surface portion 19b, the third upper end cover upper end surface portion 19c and the upper end step portion 191a of the upper end cover; The lower end cover includes a plurality of lower end cover upper end face portions and an upper end step portion 139a, the plurality of lower end cover upper end face portions of the lower end cover include a first lower end cover upper end face portion 13a, a second lower end cover upper end face portion 13b and a third lower end cover upper end face portion 13c, the lower end cover of the present invention includes a plurality of lower end cover lower end face portions and a lower end step portion 138a, the plurality of lower end cover lower end face portions of the lower end cover include a first lower end cover lower end face portion 133a and a second lower end cover lower end face portion 133b, the height of the second lower end cover lower end face portion 133b is higher than the height of the first lower end cover lower end face portion 133a, the first lower end cover lower end face portion 133a and the second lower end cover lower end face portion 133b are arranged inwardly along the outer circumference of the lower end of the lower end cover; The lower end cover of the present invention also includes a rear pressure piece, which includes a plurality of rear pressure piece upper end face portions and a rear pressure piece upper end step portion 1349a, wherein the plurality of rear pressure piece upper end face portions of the rear pressure piece include a first rear pressure piece upper end face portion 134a and a second rear pressure piece upper end face portion 134b, wherein the height of the first rear pressure piece upper end face portion 134a is higher than the height of the second rear pressure piece upper end face portion 134b, and the first rear pressure piece upper end face portion 134a and the second rear pressure piece upper end face portion 134b are arranged in an inward direction along the upper periphery of the rear pressure piece; the first lower end cover lower end face portion 133a of the lower end cover corresponds to the first rear pressure piece upper end face portion 134a of the rear pressure piece, The second lower end cover lower end surface portion 133b of the lower end cover corresponds to the second rear pressure piece upper end surface portion 134b of the rear pressure piece; the second lower end cover upper end surface portion 13b, the third lower end cover upper end surface portion 13c and the upper end step portion 139a of the lower end cover of the present invention are combined to form an oil storage space L; the first lower end cover lower end surface portion 133a, the second lower end cover lower end surface portion 133b and the lower end step portion 138a of the lower end cover of the present invention are combined with the first rear pressure piece upper end surface portion 134a, the second rear pressure piece upper end surface portion 134b and the rear pressure piece upper end step portion 1349a to form an oil sealing space E; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0070] Example 3, see Figure 3 The present invention discloses a motor shell, which includes an upper end cover, a shell body and a lower end cover, wherein the upper end cover includes a first upper end cover upper end face portion 19a, a second upper end cover upper end face portion 19b, a third upper end cover upper end face portion 19c, a fourth upper end cover upper end face portion 19d and an upper end step portion 191a, wherein the height of the fourth upper end cover upper end face portion 19d is higher than the height of the third upper end cover upper end face portion 19c, and the height of the fourth upper end cover upper end face portion 19d is lower than the height of the second upper end cover upper end face portion 19b, wherein the first upper end cover upper end face portion 19a is higher than the height of the second upper end cover upper end face portion 19b, and the first upper end cover upper end face portion 19a, the second upper end cover upper end face portion 19b, the third upper end cover upper end face portion 19c and the fourth upper end cover upper end face portion 19d are arranged inwardly along the upper end outer circumference of the upper end cover; The upper end cover further comprises a first upper end cover lower end face portion 18a, a second upper end cover lower end face portion 18b, a third upper end cover lower end face portion 18c, a fourth upper end cover lower end face portion 18d and a lower end step portion 181a, wherein the height of the second upper end cover lower end face portion 18b is higher than the height of the first upper end cover lower end face portion 18a, and the height of the second upper end cover lower end face portion 18b is higher than the height of the third upper end cover lower end face portion 18c, the height of the third upper end cover lower end face portion 18c is higher than the height of the fourth upper end cover lower end face portion 18d, and the height of the third upper end cover lower end face portion 18c is higher than the height of the fourth upper end cover upper end face portion 19d, and the first upper end cover lower end face portion 18a, the second upper end cover lower end face portion 18b, the third upper end cover lower end face portion 18c and the fourth upper end cover lower end face portion 18d are arranged inwardly along the outer circumference of the lower end of the upper end cover; A mounting member B1111 is also provided on the second upper end cover upper end surface portion 19b, and the mounting member B1111 includes a first side end surface portion 1112a, a second side end surface portion 1112c, a mounting member B step portion 1112b, a mounting member B lower end surface portion and a mounting member B upper end surface portion 1113, the mounting member B step portion 1112b is in contact with the second upper end cover upper end surface portion 19b, the second side end surface portion 1112c is matched and connected with the upper end step portion 191a, and the mounting member B lower end surface portion is opposite to the oil seal space S, and the oil seal space S is an oil seal space formed by the combination of the third upper end cover upper end surface portion 19c, the fourth upper end cover upper end surface portion 19d and the upper end step portion 191a of the upper end cover; A mounting member A113 is also provided on the upper end surface portion 19a of the first upper end cover, and the mounting member A113 includes a mounting member A lower end surface portion a1111a and a mounting member A lower end surface portion b1111b, wherein the mounting member A lower end surface portion a1111a contacts the first upper end cover upper end surface portion 19a, and the mounting member A lower end surface portion b1111b is opposite to a sealed space R, and the sealed space R is a sealed space formed by a combination of the second upper end cover upper end surface portion 19b of the upper end cover, the upper end step portion 191a, and the mounting member B upper end surface portion 1113 of the mounting member B; The lower end cover includes a plurality of lower end cover upper end face portions and an upper end step portion 139a, wherein the plurality of lower end cover upper end face portions of the lower end cover include a first lower end cover upper end face portion 13a, a second lower end cover upper end face portion 13b, a third lower end cover upper end face portion 13c, a fourth lower end cover upper end face portion 13d, a fifth lower end cover upper end face portion 13e and a sixth lower end cover upper end face portion 13f, wherein the height of the first lower end cover upper end face portion 13a is higher than the height of the second lower end cover upper end face portion 13b, the height of the second lower end cover upper end face portion 13b is higher than the height of the third lower end cover upper end face portion 13c, and the third lower end cover The height of the upper end surface portion 13c is higher than the height of the upper end surface portion 13d of the fourth lower end cover, the height of the upper end surface portion 13d of the fourth lower end cover is higher than the height of the upper end surface portion 13e of the fifth lower end cover, and the height of the upper end surface portion 13f of the sixth lower end cover is higher than the height of the upper end surface portion 13e of the fifth lower end cover, and the upper end surface portion 13a of the first lower end cover, the upper end surface portion 13b of the second lower end cover, the upper end surface portion 13c of the third lower end cover, the upper end surface portion 13d of the fourth lower end cover, the upper end surface portion 13e of the fifth lower end cover and the upper end surface portion 13f of the sixth lower end cover are arranged inwardly along the outer circumference of the upper end of the lower end cover; The lower end cover of the present invention includes a plurality of lower end face portions and a lower end step portion 138a, wherein the lower end step portion is located between adjacent lower end face portions among the plurality of lower end face portions, wherein the plurality of lower end face portions of the lower end cover include a first lower end cover lower end face portion 133a, a second lower end cover lower end face portion 133b and a third lower end cover lower end face portion 133c, wherein the height of the third lower end cover lower end face portion 133c is higher than the height of the second lower end cover lower end face portion 133b, and the height of the second lower end cover lower end face portion 133b is higher than the height of the first lower end cover lower end face portion 133a, and the first lower end cover lower end face portion 133a, the second lower end cover lower end face portion 133b and the third lower end cover lower end face portion 133c are arranged in an inward direction along the outer circumference of the lower end of the lower end cover; The lower end cover of the present invention also includes a rear pressure piece, which includes a plurality of rear pressure piece upper end face portions and a rear pressure piece upper end step portion 1349a, wherein the plurality of rear pressure piece upper end face portions of the rear pressure piece include a first rear pressure piece upper end face portion 134a, a second rear pressure piece upper end face portion 134b and a third rear pressure piece upper end face portion 134c, wherein the height of the first rear pressure piece upper end face portion 134a is higher than the height of the second rear pressure piece upper end face portion 134b, and the second rear pressure piece upper end face portion The height of 134b is higher than the height of the third rear pressure piece upper end surface 134c, and the first rear pressure piece upper end surface 134a, the second rear pressure piece upper end surface 134b and the third rear pressure piece upper end surface 134c are arranged in the inner direction along the upper periphery of the rear pressure piece; the first lower end cover lower end surface 133a of the lower end cover corresponds to the first rear pressure piece upper end surface 134a of the rear pressure piece, and the second lower end cover lower end surface 133b of the lower end cover corresponds to the The second rear pressure piece upper end surface 134b of the rear pressure piece corresponds to the third lower end cover lower end surface 133c of the lower end cover corresponds to the third rear pressure piece upper end surface 134c of the rear pressure piece; the second lower end cover upper end surface 13b, the third lower end cover upper end surface 13c, the fourth lower end cover upper end surface 13d, the fifth lower end cover upper end surface 13e, the sixth lower end cover upper end surface 13f and the upper step 139a of the lower end cover of the present invention are combined to form an oil storage space L; the first lower end cover lower end surface portion 133a, the second lower end cover lower end surface portion 133b, the third lower end cover lower end surface portion 133c and the lower end step portion 138a of the lower end cover of the present invention are combined with the first rear pressure piece upper end surface portion 134a, the second rear pressure piece upper end surface portion 134b, the third rear pressure piece upper end surface portion 134c and the rear pressure piece upper end step portion 1349a to form an oil sealing space E; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0071] Example 4, see Figure 4The present invention discloses a motor housing, which includes an upper end cover, a housing body and a lower end cover, wherein the upper end cover includes a first upper end cover upper end face portion 19a, a second upper end cover upper end face portion 19b, a third upper end cover upper end face portion 19c, a fourth upper end cover upper end face portion 19d, a fifth upper end cover upper end face portion 19e and an upper end step portion 191a, wherein the height of the fifth upper end cover upper end face portion 19e is higher than the height of the fourth upper end cover upper end face portion 19d, and the height of the fifth upper end cover upper end face portion 19e is lower than The height of the third upper end cover upper end surface 19c, the second upper end cover upper end surface 19b is higher than the height of the third upper end cover upper end surface 19c, the first upper end cover upper end surface 19a is higher than the height of the second upper end cover upper end surface 19b, and the first upper end cover upper end surface 19a, the second upper end cover upper end surface 19b, the third upper end cover upper end surface 19c, the fourth upper end cover upper end surface 19d and the fifth upper end cover upper end surface 19e are arranged inwardly along the outer circumference of the upper end of the upper end cover; The upper end cover further comprises a first upper end cover lower end face portion 18a, a second upper end cover lower end face portion 18b, and a third upper end cover lower end face portion 18c, wherein the height of the second upper end cover lower end face portion 18b is higher than the height of the first upper end cover lower end face portion 18a, and the height of the second upper end cover lower end face portion 18b is higher than the height of the third upper end cover lower end face portion 18c, and the height of the second upper end cover lower end face portion 18b is higher than the height of the fifth upper end cover upper end face portion 19e, and the first upper end cover lower end face portion 18a, the second upper end cover lower end face portion 18b, and the third upper end cover lower end face portion 18c are arranged inwardly along the outer circumference of the lower end of the upper end cover; A mounting member B1111 is also provided on the upper end face portion 19c of the third upper end cover, and the mounting member B1111 includes a first side end face portion 1112a, a second side end face portion 1112c, a mounting member B step portion 1112b, a mounting member B lower end face portion 1115 and a mounting member B upper end face portion 1113, the mounting member B step portion 1112b is in contact with the upper end face portion 19c of the third upper end cover, the second side end face portion 1112c is in cooperation with the upper end step portion 191a, and the mounting member B lower end face portion 1115 is opposite to the oil seal space, which is the oil seal space formed by the combination of the fourth upper end cover upper end face portion 19d, the fifth upper end cover upper end face portion 19e and the upper end step portion 191a of the upper end cover; A mounting member A113 is also provided on the second upper end cover upper end surface portion 19b, and the mounting member A113 includes a mounting member A lower end surface portion a1111a and a mounting member A lower end surface portion b1111b, wherein the mounting member A lower end surface portion a1111a contacts the second upper end cover upper end surface portion 19b, and the mounting member A lower end surface portion b1111b is opposite to a sealed space R, and the sealed space R is a sealed space formed by a combination of the third upper end cover upper end surface portion 19c of the upper end cover, the upper end step portion 191a, and the mounting member B upper end surface portion 1113 of the mounting member B; The lower end cover includes a plurality of lower end cover upper end face portions and an upper end step portion 139a, wherein the plurality of lower end cover upper end face portions of the lower end cover include a first lower end cover upper end face portion 13a, a second lower end cover upper end face portion 13b, a third lower end cover upper end face portion 13c, a fourth lower end cover upper end face portion 13d, a fifth lower end cover upper end face portion 13e and a sixth lower end cover upper end face portion 13f, wherein the height of the first lower end cover upper end face portion 13a is higher than the height of the second lower end cover upper end face portion 13b, and the height of the second lower end cover upper end face portion 13b is lower than the height of the third lower end cover upper end face portion 13c, the height of the third lower end cover upper end face portion 13c is lower than the height of the fourth lower end cover upper end face portion 13d, and the height of the fourth lower end cover upper end face portion 13d is lower than the height of the fifth lower end cover upper end face portion 13f. The height of the end surface portion 13e, the height of the 5th lower end cover upper end surface portion 13e is lower than the height of the 6th lower end cover upper end surface portion 13f, the 1st lower end cover upper end surface portion 13a, the 2nd lower end cover upper end surface portion 13b, the 3rd lower end cover upper end surface portion 13c, the 4th lower end cover upper end surface portion 13d, the 5th lower end cover upper end surface portion 13e and the 6th lower end cover upper end surface portion 13f are arranged along the upper end periphery of the lower end cover inward; the 2nd lower end cover upper end surface portion 13b, the 3rd lower end cover upper end surface portion 13c, the 4th lower end cover upper end surface portion 13d, the 5th lower end cover upper end surface portion 13e, the 6th lower end cover upper end surface portion 13f and the upper end step portion 139a of the lower end cover of the present invention are combined to form an oil storage space L; the rest are the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0072] Example 5, see Figure 5The present invention discloses a motor housing, the motor housing comprising a first upper end cover upper end surface portion 19a, a second upper end cover upper end surface portion 19b, a third upper end cover upper end surface portion 19c, a fourth upper end cover upper end surface portion 19d and a fifth upper end cover upper end surface portion 19e, the inner diameter of the first upper end cover upper end surface portion 19a is equal to the outer diameter of the second upper end cover upper end surface portion 19b, the inner diameter of the second upper end cover upper end surface portion 19b is equal to the outer diameter of the third upper end cover upper end surface portion 19c, the third upper end cover upper end surface portion 19e is equal to the outer diameter of the third upper end cover upper end surface portion 19c, the fourth upper end cover upper end surface portion 19d is equal to the outer diameter of the third upper end cover upper end surface portion 19e, the fourth ...e is equal to the outer diameter of the third upper end cover upper end surface portion 19c, the fourth upper end cover upper end surface portion 19d is equal to the outer diameter of the third upper end cover upper end surface portion 19e, the fourth upper end cover upper end surface portion 19e is equal to the outer diameter of the third upper end cover upper end surface portion 19c, the fourth upper end cover upper end surface portion 19 The inner diameter of c is equal to the outer diameter of the 4th upper end cover upper end surface 19d, the inner diameter of the 4th upper end cover upper end surface 19d is equal to the outer diameter of the 5th upper end cover upper end surface 19e, the 1st upper end cover upper end surface 19a, the 2nd upper end cover upper end surface 19b, the 3rd upper end cover upper end surface 19c, the 4th upper end cover upper end surface 19d and the 5th upper end cover upper end surface 19e are arranged along the upper end periphery of the upper end cover inwardly, and the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0073] Example 6, see Figure 6 The present invention discloses a motor, the motor comprising an upper end cover 11, a shell body 12, a lower end cover 13, a stator component 2, a rotor component 3 and a motor shaft 4, the upper end cover 11 is provided with a mounting member A113 and a mounting member B1111, a first sealing member 115 is provided on the upper end face portion 19e of the fifth upper end cover of the upper end cover 11, the upper end of the first sealing member 115 is connected to the lower end face portion 1115 of the mounting member B1111, a protrusion 1114 is provided on the upper end face portion 1113 of the mounting member B1111, a second sealing member 1118 is provided on the protrusion 1114, and the upper end of the second sealing member 1118 is connected to the mounting member A1 The stator component 2 is installed in the shell body 12, the rotor component 3 is arranged in the stator component 2, the motor shaft 4 passes through the rotor component 3 and is fixedly connected to the rotor component 3, one end of the motor shaft 4 passes through the upper end cover 11, the mounting component B1111 and the mounting component A113 in sequence and extends to the outside of the motor, the upper end cover 11 is also provided with an upper oil hole 118 and a wire outlet hole 119, one end of the upper oil hole 118 and the wire outlet hole 119 are respectively connected to the first upper end cover upper end face 19a of the upper end cover 11, and the other end of the upper oil hole 118 and the wire outlet hole 119 are respectively connected to the second upper end cover lower end face 18b of the upper end cover 11; The lower end cover 13 is provided with a detection and maintenance device and a lower oil hole 1321, one end of the lower oil hole 1321 is connected to the upper step portion 139a, and the other end of the lower oil hole 1321 is connected to the lower end surface portion 133b of the second lower end cover. The detection and maintenance device 137 includes a detection and alarm device and a repair and maintenance hole, the detection and alarm device is arranged on the upper step portion 139a, one end of the repair and maintenance hole is connected to the upper step portion 139a, and the other end is connected to the outer end of the lower end cover 13; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0074] Example 7, see Figure 7 The present invention discloses a motor, which includes an upper end cover 11 and a mounting member A113, wherein the mounting member A113 is cooperatively connected with the upper end cover 11, and a hole A is provided on the mounting member A113, and the hole A can pass the motor shaft 4, and the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0075] Example 8, see Figure 8 The present invention discloses a motor, the motor comprises an upper end cover 11, a shell body 12, and a lower end cover 13, the upper end cover 11 and the lower end cover 13 are respectively arranged at the upper and lower ends of the shell body 12, the upper end cover 11 is provided with a mounting member A113 and a mounting member B1111, the second side end face portion 1112c of the mounting member B1111 is provided with a third sealing groove 11111, and a sealing ring is arranged in the third sealing groove 11111, preferably, the sealing ring is a rubber ring, so that the mounting member B1111 is sealed and connected with the upper end cover 11, so as to prevent liquid from flowing into the interior of the upper end cover from the side end face portion of the mounting member B1111; An upper end cover wing 116 is arranged on the lower end face of the upper end cover 11, a first end wing 121 cooperating with the upper end cover wing 116 of the upper end cover 11 is arranged on the upper end face of the shell body 12, a fourth sealing groove 1211 is arranged on the end face of the first end wing 121 close to the upper end cover wing 116, a sealing ring is arranged in the fourth sealing groove 1211, preferably, the sealing ring is a rubber ring, the sealing ring makes the shell body 12 and the upper end cover 11 sealed and connected, the first end wing 121 can also be provided with bolts, the first end wing 121 and the The upper end cover wing 116 is fastened and connected by bolts; a second end wing 122 having the same / similar structure as the first end wing 121 is provided on the lower end surface of the shell body 12, a lower end cover wing 130 cooperating with the second end wing 122 is provided on the inner end surface of the lower end cover 13, a fifth sealing groove 1212 is provided on the inner end surface of the shell body 12 near the lower end cover 13 of the second end wing 122, a sealing ring is provided in the fifth sealing groove 1212, preferably, the sealing ring is a rubber ring, and the sealing ring makes the shell body 12 and the lower end cover 13 sealed and connected; A first bearing groove 1141 is provided on the lower end surface portion 18c of the third upper end cover of the upper end cover 11, a bearing is provided in the first bearing groove 1141, the upper end cover 11 is sleeved on the motor shaft through the bearing, a second bearing groove 1311 is provided on the inner end surface of the lower end cover 13, a bearing is provided in the second bearing groove 1311, and the lower end cover 13 is connected to the motor shaft through the bearing; The lower end cover 13 is provided with a detection and maintenance device, which includes a detection alarm device 1371 and a maintenance hole 1372. The detection alarm device 1371 is provided on the upper step portion 139a. One end of the maintenance hole 1372 is connected to the upper step portion 139a, and the other end is connected to the outer end of the lower end cover 13. The lower end cover 13 is also provided with a rear pressure piece 134, and the rear pressure piece 134 includes a rear pressure seal 1344 and a rear pressure piece water hole 1345; the multiple upper end surface portions and the upper end step portion of the lower end cover of the present invention are combined to form an oil storage space L; the multiple lower end surface portions and the lower end step portion of the lower end cover of the present invention are combined with the rear pressure seal 1344 to form an oil sealing space E, and the rear pressure seal 1344 of the rear pressure piece of the present invention is combined with the multiple rear pressure piece upper end surface portions and the rear pressure piece upper end step portion to form a water space F; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0076] Example 9, see Fig. 9 The present invention discloses a motor, the motor comprising a motor housing 1, a stator component 2, a rotor component 3 and a motor shaft 4, an upper magnet seat 431 is arranged at one end of the motor shaft 4 close to the lower end cover 13, the upper magnet seat 431 is provided with a thread, the motor shaft 4 is provided with a corresponding screw hole, the upper magnet seat 431 is fixed to the motor shaft 4 by bolts, and a magnet is arranged on the upper magnet seat 431; A lower magnet seat 432 is provided on the second bearing groove 1311 of the lower end cover 13, and a thread is provided on the lower magnet seat 432. The second bearing groove 1311 of the lower end cover 13 is provided with a corresponding screw hole. The lower magnet seat 432 is fixed to the lower end cover 13 by bolts, and a magnet is provided on the lower magnet seat; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0077] Example 10, see Fig.10 The present invention discloses an upper end cover of a motor, wherein the upper end cover is provided with an axial hole 1122, the mounting member B is provided with a hole B1116, the mounting member A is provided with a hole A1131, the diameter of the axial hole 1122 is equal to the diameter of the hole B1116 is equal to the diameter of the hole A1131, and the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0078] Example 11, see Fig.11 The present invention discloses a mounting member B of a motor, wherein the mounting member B comprises a first side end face portion 1112a, a second side end face portion 1112c, a mounting member B step portion 1112b, a mounting member B upper end face portion 1113, a protruding portion 1114, a mounting member B lower end face portion 1115 and a hole B1116, wherein the protruding portion 1114 is arranged on the mounting member B upper end face portion 1113, one end of the hole B1116 is connected to the protruding portion 1114, and the other end of the hole B1116 is connected to the mounting member B lower end face portion 1115, and the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0079] Example 12, see Fig.12 The present invention discloses a mounting member B of a motor, wherein the mounting member B comprises an upper end surface portion 1113 of the mounting member B, a protrusion 1114 and a hole B1116, wherein the upper end surface portion 1113, the protrusion 1114 and the hole B1116 of the mounting member B are circular and share a center line, and the rest is the same as any other embodiment or a combination of more than two embodiments of the present invention.

[0080] Example 13, see Fig.13 and Fig.14 The present invention discloses a lower end cover, which includes an upper end step portion 139a, a lower oil hole 1321, a cooling cavity 1322, an oil hole 1323, a lower end face portion 133b of a second lower end cover, and a second bearing groove 1311. The inner end surface of the lower end cover 13 is provided with a second bearing groove 1311. The cooling cavity 1322 is provided below the second bearing groove 1311 to cool the second bearing groove 1311 and lubricate and cool the motor shaft and bearing. One end of the lower oil hole 1321 is connected to the upper end step portion 139a, and the other end of the lower oil hole 1321 is connected to the cooling cavity 1322. One end of the oil hole 1323 is connected to the cooling cavity 1322, and the other end of the oil hole 1323 is connected to the lower end face portion of the second lower end cover. 133b; the lower end cover also includes a rear pressure piece, which includes a first rear pressure piece upper end surface portion 134a, a second rear pressure piece upper end surface portion 134b, a rear pressure seal 1344 and a rear pressure piece groove 1343, the first rear pressure piece upper end surface portion 134a of the rear pressure piece is connected to the lower end surface portion of the lower end cover through the rear pressure seal 1344, a rear pressure piece groove 1343 is provided on the outer end surface of the rear pressure piece, a rear pressure piece water hole 1345 is provided on the rear pressure piece groove 1343, one end of the rear pressure piece water hole 1345 is connected to the rear pressure piece groove 1343, and the other end of the rear pressure piece water hole 1345 is connected to the second rear pressure piece upper end surface portion 134b; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0081] The technical solutions in the embodiments of the present application will be clearly and completely described above in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and does not serve as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0082] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0083] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0084] Unless otherwise specified, the relative arrangement of the components and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present application. At the same time, it should be understood that for ease of description, the structures, proportions, sizes, etc. shown in the drawings are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions that can be implemented in this application. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by this application and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in this application can cover. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.

[0085] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0086] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0087] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

Claims

1. A motor housing, comprising an upper end cover, a housing body and a lower end cover, wherein the upper end cover and the lower end cover are respectively arranged at the upper and lower ends of the housing body, wherein: The upper end cover comprises a plurality of upper end cover upper end face portions and upper end cover upper end step portions, the plurality of upper end cover upper end face portions include the upper end face of the upper end cover and have different heights, the upper end step portions of the upper end cover are formed on the upper end face of the upper end cover, the upper end step portions of the upper end cover are located between adjacent upper end cover upper end face portions among the plurality of upper end cover upper end face portions, the plurality of upper end cover upper end face portions of the upper end cover comprise a first upper end cover upper end face portion to an nth upper end cover upper end face portion, the height of the nth upper end cover upper end face portion is higher than the height of the (n-1)th upper end cover upper end face portion, and the height of the nth upper end cover upper end face portion is lower than the height of the (n-2)th upper end cover upper end face portion, the first upper end cover upper end face portion to the nth upper end cover upper end face portion are arranged inwardly along the outer circumference of the upper end of the upper end cover, wherein n is an integer greater than 3; The upper end cover includes a plurality of upper end cover lower end face portions and an upper end cover lower end step portion, the plurality of upper end cover lower end face portions include the lower end face of the upper end cover and have different heights, the upper end cover lower end step portion is formed on the lower end face of the upper end cover, the upper end cover lower end step portion is located between adjacent upper end cover lower end face portions among the plurality of upper end cover lower end face portions, the plurality of upper end cover lower end face portions of the upper end cover include the first upper end cover lower end face portion to the mth upper end cover lower end face portion, the height of the (m-1)th upper end cover lower end face portion is higher than the height of the mth upper end cover lower end face portion, and the height of the (m-1)th upper end cover lower end face portion is higher than the height of the mth upper end cover lower end face portion, and the first upper end cover lower end face portion to the mth upper end cover lower end face portion are arranged along the lower end periphery of the upper end cover inwardly, wherein m is an integer greater than 3.

2. The motor housing according to claim 1 is characterized in that: The lower end cover includes a plurality of lower end cover upper end face portions and a lower end cover upper end step portion, the plurality of lower end cover upper end face portions include the upper end face of the lower end cover and have different heights, the lower end cover upper end step portion is formed on the upper end face of the lower end cover, the lower end cover upper end step portion is located between adjacent lower end cover upper end face portions among the plurality of lower end cover upper end face portions, the plurality of lower end cover upper end face portions of the lower end cover include the 1st lower end cover upper end face portion to the xth lower end cover upper end face portion, the height of the xth lower end cover upper end face portion is higher than the height of the (x-1)th lower end cover upper end face portion, and the height of the (x-1)th lower end cover upper end face portion is lower than the height of the 1st lower end cover upper end face portion, the 1st lower end cover upper end face portion to the xth lower end cover upper end face portion are arranged along the upper periphery of the lower end of the lower end cover inwardly, wherein x is an integer greater than 3.

3. The motor housing according to claim 1 is characterized in that: The lower end cover includes a plurality of lower end cover lower end face portions and a lower end step portion, the plurality of lower end cover lower end face portions include the lower end face of the lower end cover and have different heights, the lower end step portion of the lower end cover is formed on the lower end face of the lower end cover, the lower end step portion of the lower end cover is located between adjacent lower end face portions of the plurality of lower end cover lower end face portions, the plurality of lower end cover lower end face portions of the lower end cover include the 1st lower end face portion to the yth lower end face portion, the height of the yth lower end face portion is higher than the height of the (y-1)th lower end face portion, the 1st lower end face portion to the yth lower end face portion are arranged in sequence along the lower end periphery of the lower end of the lower end cover inwardly, wherein y is an integer greater than 2.

4. The motor housing according to claim 3 is characterized in that: The lower end cover also includes a rear pressure piece, and the rear pressure piece includes a plurality of rear pressure piece upper end surface portions and a rear pressure piece upper end step portion, the plurality of rear pressure piece upper end surface portions include the upper end surface of the rear pressure piece and have different heights, the rear pressure piece upper end step portion is formed on the upper end surface of the rear pressure piece, and the rear pressure piece upper end step portion is located between adjacent rear pressure piece upper end surface portions among the plurality of rear pressure piece upper end surface portions, the plurality of rear pressure piece upper end surface portions of the rear pressure piece include the 1st rear pressure piece upper end surface portion to the yth rear pressure piece upper end surface portion, the height of the yth rear pressure piece upper end surface portion is lower than the height of the (y-1)th rear pressure piece upper end surface portion, and the 1st rear pressure piece upper end surface portion to the yth rear pressure piece upper end surface portion are arranged in sequence along the upper periphery of the rear pressure piece inward, wherein y is an integer greater than 2.

5. The motor housing according to claim 4 is characterized in that: The rear pressure member includes a rear pressure sealing member, the multiple lower end surface portions of the lower end cover correspond to the multiple rear pressure member upper end surface portions of the rear pressure member, the first rear pressure member upper end surface portion corresponds to the first lower end surface portion, the yth rear pressure member upper end surface portion corresponds to the yth lower end surface portion, and the first rear pressure member upper end surface portion is contacted and fixed to the first lower end surface portion through the rear pressure sealing member.

6. The motor housing according to claim 5, characterized in that: The upper end surface of the lower end cover is provided with a lower oil hole, and the upper end surface of the lower end cover is connected to the lower end surface of the lower end cover through the lower oil hole; the rear pressure piece also includes a rear pressure piece lower end surface, and the upper end surface of the rear pressure piece is provided with a water hole, and the upper end surface of the rear pressure piece is connected to the lower end surface of the rear pressure piece through the water hole.

7. The motor housing according to any one of claims 1 to 6, characterized in that: The upper end cover also includes a mounting member A, which includes a lower end face portion a of the mounting member A and a lower end face portion b of the mounting member A. The mounting member A is arranged on the upper end face portions of the upper end covers other than the upper end face portions of the (n-1)th upper end cover and the upper end face portions of the nth upper end cover. The lower end face portion a of the mounting member A contacts the upper end face portion of the upper end cover, and the lower end face portion b of the mounting member A is opposite to the oil seal space S. The oil seal space S is an oil seal space formed by a combination of the upper end face portion of the nth upper end cover of the upper end cover to the upper end face portion of the upper end cover provided with the mounting member A and the upper end step portion of the upper end cover.

8. The motor housing according to any one of claims 1 to 6, characterized in that: The upper end cover also includes a mounting member B, which is arranged on the upper end face portions of the upper end covers other than the upper end face portion of the (n-1)th upper end cover and the upper end face portion of the nth upper end cover, the mounting member B includes a first side end face portion, a second side end face portion and a mounting member B step portion, the first side end face portion and the second side end face portion have different outer diameters, the first side end face portion is larger than the outer diameter of the second side end face portion, the mounting member B step portion is located between the first side end face portion and the second side end face portion, the mounting member B step portion of the mounting member B is in contact with the upper end face portion of the upper end cover, and the second side end face portion of the mounting member B is in contact with the upper end step portion of the upper end cover.

9. A motor, characterized in that: The motor comprises a motor housing, a stator component, a rotor component and a motor shaft as described in any one of claims 1 to 8, wherein the stator component is installed in the motor housing, the rotor component is arranged in the stator component, the motor shaft passes through the rotor component and is fixedly connected to the rotor component, and one end of the motor shaft passes through the upper end cover of the motor housing and extends to the outside of the motor housing; or the rotor component is installed in the motor housing, the stator component is arranged in the rotor component, the motor shaft passes through the stator component and the rotor component and is fixedly connected to the rotor component, and one end of the motor shaft passes through the upper end cover of the motor housing and extends to the outside of the motor housing.

10. The motor according to claim 9, characterized in that: Bearings are respectively provided in the upper end cover and the lower end cover of the motor housing, one end of the motor shaft is connected to the bearing of the lower end cover, and the other end is connected to the bearing of the upper end cover and passes through the upper end cover to the outside of the motor housing, a lower magnet seat is provided on the inner end surface of the lower end cover, and an upper magnet seat is provided at the corresponding end of the motor shaft, and magnets are provided on the upper magnet seat and the lower magnet seat.

Images