Split type end cover and motor

Abstract

The invention provides a split type end cover and a motor, the split type end cover comprises a first end cover, a second end cover, a third end cover and a fourth end cover, the first end cover comprises a first cylinder and a first flange, the first flange is arranged at the axially open end of the first cylinder towards the circumferential outer side, the second end cover comprises a first circular ring cylinder and a first lug, and the third end cover comprises a second circular ring cylinder and a second lug. The periphery of the first cylinder body is sleeved with the first circular ring cylinder body; the fourth end cover comprises a second cylinder and a second flange, the third end cover comprises a second circular ring cylinder and a second convex lug, and the second circular ring cylinder is arranged on the periphery of the second cylinder in a sleeving mode; the first turned edge and the second turned edge are opposite and attached in the axial direction, and the first end cover, the second end cover, the third end cover and the fourth end cover are fixed into a whole through the first convex lug and the second convex lug; the first end cover and / or the fourth end cover can be replaced according to stators of different heights. According to the invention, the sealing performance of the motor is improved while the universal performance of the end cover is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a split end cover and a motor. Background Art

[0002] Among the existing motors in the field of household appliances, iron shell motors are widely used due to their high process maturity, high wear resistance, durability, and high degree of optimization. In the structural development process of iron shell motors, the end covers often have different heights and trimming sizes due to the size constraints of the internal core stack thickness and enameled wire scheme, as well as the load installation structure, so they do not have particularly good versatility. Different heights and trimmings will require new molds, greatly increasing development costs.

[0003] Since the motor end cover in the prior art has technical problems such as the mold is not universal due to cutting edges and height size changes and needs to be re-made, and the internal sealing performance of the motor is reduced in order to achieve the universal purpose of the end cover, the present invention studies and designs a split end cover and motor. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the motor end cover in the prior art cannot take into account both versatility and sealing, thereby providing a split end cover and a motor.

[0005] In order to solve the above problems, the present invention provides a split end cover, which includes:

[0006] A first end cover, a second end cover, a third end cover and a fourth end cover, wherein the first end cover comprises a first cylindrical body and a first flange, the first cylindrical body is closed at one axial end and open at the other axial end, the first cylindrical body has a first accommodating space inside, the axially open end of the first cylindrical body protrudes outwardly in the circumferential direction and is provided with the first flange, the second end cover comprises a first annular cylinder and a first lug, the first lug is a protruding structure arranged on the outer circumference of the first annular cylinder and protruding outwardly in the circumferential direction, and the first annular cylinder is sleeved on the outer circumference of the first cylindrical body;

[0007] The fourth end cover includes a second cylindrical body and a second flange, the second cylindrical body is closed at one axial end and open at the other axial end, the second cylindrical body has a second accommodating space inside, the axially open end of the second cylindrical body protrudes outwardly with the second flange, the third end cover includes a second annular cylinder and a second lug, the second lug is a protruding structure arranged on the outer circumference of the second annular cylinder and protruding outwardly, and the second annular cylinder is sleeved on the outer circumference of the second cylindrical body;

[0008] The first flange and the second flange are axially opposite and closely arranged, so that the first accommodating space and the second accommodating space enclose a closed space to accommodate the stator and the rotor, and the first end cover, the second end cover, the third end cover and the fourth end cover are fixed as a whole through the first lug and the second lug; the first end cover and / or the fourth end cover can be replaced according to stators of different heights.

[0009] In some embodiments,

[0010] The first annular cylinder is fitted with the first flange in the axial direction, and the second annular cylinder is fitted with the second flange in the axial direction; the axial height of the first lug is higher than the axial height of the first annular cylinder, and extends toward the third end cover; the axial height of the second lug is higher than the axial height of the second annular cylinder, and extends toward the second end cover, so that the first lug and the second lug can be fitted in the axial direction.

[0011] In some embodiments,

[0012] It also includes a fastener, a first mounting hole is axially penetrated on the first flange, a second mounting hole is axially penetrated on the first lug, a third mounting hole is axially penetrated on the second lug, and a fourth mounting hole is axially penetrated on the second flange, the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole are opposite to each other in the axial direction, and the fastener passes through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole in sequence to fix the first end cover, the second end cover, the third end cover and the fourth end cover as a whole; or the fastener passes through the fourth mounting hole, the third mounting hole, the second mounting hole and the first mounting hole in sequence to fix the first end cover, the second end cover, the third end cover and the fourth end cover as a whole.

[0013] In some embodiments,

[0014] There are a plurality of first lugs, and the plurality of first lugs are arranged at intervals along the circumferential direction of the first annular cylinder; there are a plurality of second mounting holes, and the second mounting holes are arranged in one-to-one correspondence with the first lugs;

[0015] There are a plurality of second lugs, and the plurality of second lugs are arranged at intervals along the circumferential direction of the second annular cylinder. There are a plurality of third mounting holes, and the third mounting holes are arranged in one-to-one correspondence with the second lugs.

[0016] In some embodiments,

[0017] The first mounting hole is connected to the outer periphery of the first flange to form an arc-shaped hole structure, the second mounting hole is located at the position where the first lug is connected to the first circular cylinder, and the third mounting hole is located at the position where the second lug is connected to the second circular cylinder; the fourth mounting hole is connected to the outer periphery of the second flange to form an arc-shaped hole structure.

[0018] In some embodiments,

[0019] The first flange is also provided with a first spare mounting hole extending axially therethrough, the first spare mounting hole and the first mounting hole being spaced apart in the circumferential direction, and the second end cover can be replaced according to the positions of the first mounting hole and the first spare mounting hole;

[0020] The second flange is also provided with a second spare mounting hole axially extending therethrough, the second spare mounting hole and the fourth mounting hole are circumferentially spaced apart, and the third end cover can be replaced according to the positions of the fourth mounting hole and the second spare mounting hole.

[0021] In some embodiments,

[0022] The outer circumference of the first annular cylinder is also provided with a third lug protruding outward in the circumferential direction, and the third lug is provided with a fifth mounting hole. The load can be installed and connected through the fifth mounting hole on the third lug.

[0023] In some embodiments,

[0024] The third lug is spaced from the first lug in the circumferential direction, the radial length of the third lug is longer than the radial length of the first lug, and in the axial projection plane, the distance between the radial innermost end of the fifth mounting hole and the center of the first annular cylinder is a first distance, the distance between the radial outer end of the first lug and the center of the first annular cylinder is a second distance, and the first distance is greater than the second distance.

[0025] In some embodiments,

[0026] The second end cover and / or the third end cover can be replaced according to different mounting holes on the load; the second end cover can be replaced according to the size of the outer diameter of the first cylindrical body, and the third end cover can be replaced according to the size of the outer diameter of the second cylindrical body.

[0027] In some embodiments,

[0028] There are a plurality of third lugs, and the plurality of third lugs are arranged at intervals along the circumferential direction of the first annular cylinder; there are a plurality of fifth mounting holes, and the fifth mounting holes are arranged in one-to-one correspondence with the third lugs;

[0029] When there are a plurality of first lugs, the first lugs and the third lugs are alternately arranged along the circumferential direction.

[0030] The present invention also provides a motor, which comprises the aforementioned split end cover.

[0031] The split end cover and motor provided by the present invention have the following beneficial effects:

[0032] The present invention provides a first, second, third and fourth end cover, wherein the first and fourth end covers are cylindrical barrel structures with flanges, and the second and third end covers are annular cylinder structures respectively sleeved with the cylindrical barrels of the first end cover and the fourth end cover, so that the flanges of the first and fourth end covers can be butted and fitted together, and the four end covers can be fastened as a whole through two lugs on the second and third end covers. Compared with the prior art in which an annular cylinder structure is provided between the two barrel end covers, the butt fitting of the flanges of the first and fourth end covers can not increase the axial size, does not destroy the axial gap between the original two end covers, does not affect the sealing, and improves the sealing performance. In addition, the first and / or fourth end cover can be replaced according to the size of the stator height, thereby improving the versatility of the split end cover of the present invention, and can be assembled to form motors with different axial heights, thereby improving the versatility of the end cover, expanding the versatility library of existing motor end covers, and improving the versatility of the end cover while improving the sealing performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a combined structural diagram of the split end cover of the present invention;

[0034] Figure 2 yes Figure 1 A schematic structural diagram of the first end cover;

[0035] Figure 3 yes Figure 1 A schematic diagram of the structure of the second end cover;

[0036] Figure 4 yes Figure 1 A schematic diagram of the structure of the third end cover;

[0037] Figure 5 yes Figure 1 A schematic diagram of the structure of the fourth end cover;

[0038] Figure 6 yes Figure 1 A longitudinal sectional view of the end cap in FIG.

[0039] Figure 7 yes Figure 6 A partial enlarged view of the first and second end caps matching;

[0040] Figure 8yes Figure 6 A partial enlarged view of the third + fourth end cover matching.

[0041] The reference numerals are:

[0042] 1. First end cover; 2. Second end cover; 3. Third end cover; 4. Fourth end cover; 5. First cylindrical body; 6. First flange; 7. First annular cylinder; 8. First lug; 9. Second cylindrical body; 10. Second flange; 11. Second annular cylinder; 12. Second lug; 13. Fastener; 131. Screw; 132. Nut; 14. First mounting hole; 15. Second mounting hole; 16. Third mounting hole; 17. Fourth mounting hole; 18. Third lug; 19. Fifth mounting hole; 20. First spare mounting hole; 21. Second spare mounting hole. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] 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.

[0045] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than 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 a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0046] In the description of the present invention, it is necessary to understand 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. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] 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.

[0048] 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. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0049] like Figure 1-8 As shown, the present invention provides a split end cover, which includes:

[0050] A first end cover 1, a second end cover 2, a third end cover 3 and a fourth end cover 4, wherein the first end cover 1 comprises a first cylindrical body 5 and a first flange 6, wherein the first cylindrical body 5 is closed at one axial end and open at the other axial end, wherein the first cylindrical body 5 has a first accommodating space inside, wherein the axially open end of the first cylindrical body 5 protrudes outwardly in the circumferential direction and is provided with the first flange 6, wherein the second end cover 2 comprises a first annular cylinder 7 and a first lug 8, wherein the first lug 8 is a protruding structure arranged on the outer circumference of the first annular cylinder 7 and protruding outwardly in the circumferential direction, and wherein the first annular cylinder 7 is sleeved on the outer circumference of the first cylindrical body 5;

[0051] The fourth end cover 4 includes a second cylindrical body 9 and a second flange 10, wherein the second cylindrical body 9 is closed at one axial end and open at the other axial end, wherein the interior of the second cylindrical body 9 has a second accommodating space, and the axially open end of the second cylindrical body 9 protrudes outwardly with the second flange 10 in the circumferential direction, and the third end cover 3 includes a second annular cylinder 11 and a second lug 12, wherein the second lug 12 is a protruding structure arranged on the outer circumference of the second annular cylinder 11 and protruding outwardly in the circumferential direction, and the second annular cylinder 11 is sleeved on the outer circumference of the second cylindrical body 9;

[0052] The first flange 6 and the second flange 10 are axially opposite and closely arranged, so that the first accommodating space and the second accommodating space form a closed space to accommodate the stator and the rotor, and the first end cover 1, the second end cover 2, the third end cover 3 and the fourth end cover 4 are fixed as a whole through the first lug 8 and the second lug 12; the first end cover 1 and / or the fourth end cover 4 can be replaced according to stators of different heights.

[0053] The present invention provides a first, second, third and fourth end cover, wherein the first and fourth end covers are cylindrical barrel structures with flanges, and the second and third end covers are annular cylinder structures respectively sleeved with the cylindrical barrels of the first end cover and the fourth end cover, so that the flanges of the first and fourth end covers can be butted and fitted together, and the four end covers can be fastened as a whole through two lugs on the second and third end covers. Compared with the prior art in which an annular cylinder structure is provided between the two barrel end covers, the butt fitting of the flanges of the first and fourth end covers can not increase the axial size, does not destroy the axial gap between the original two end covers, does not affect the sealing, and improves the sealing performance. In addition, the first and / or fourth end cover can be replaced according to the size of the stator height, thereby improving the versatility of the split end cover of the present invention, and can be assembled to form motors with different axial heights, thereby improving the versatility of the end cover, expanding the versatility library of existing motor end covers, and improving the versatility of the end cover while improving the sealing performance of the motor.

[0054] Among the existing motors in the field of household appliances, iron shell motors are widely used due to their high process maturity, high wear resistance, durability, and high degree of optimization. In the structural development process of iron shell motors, the end caps often have different heights and trimming sizes due to the size constraints of the internal core stack thickness and enameled wire scheme, as well as the load installation structure, so they are not particularly versatile. Different heights and trimmings will require new molds.

[0055] The present invention proposes a split-assembly trimmed iron shell end cover solution, which is characterized in that the cylindrical first end cover and the fourth end cover are separately assembled with the second and third end covers. The combined end cover structure of the present invention can effectively reduce the situation where the mold is not universal due to different heights and trimmings.

[0056] In some embodiments,

[0057] The first annular cylinder 7 is arranged in a close fit with the first flange 6 in the axial direction, and the second annular cylinder 11 is arranged in a close fit with the second flange 10 in the axial direction; the axial height of the first lug 8 is higher than the axial height of the first annular cylinder 7, and extends toward the third end cover 3; the axial height of the second lug 12 is higher than the axial height of the second annular cylinder 11, and extends toward the second end cover 2, so that the first lug 8 and the second lug 12 can be arranged in a close fit in the axial direction.

[0058] This is a further preferred structural form of the split end cover of the present invention. By axially fitting the first annular cylinder with the first flange, the axial size of the first annular cylinder can be shortened to achieve the effect of tightening the first lug and the second lug. By axially fitting the second annular cylinder with the second flange, the axial size of the second annular cylinder can be shortened to achieve the effect of tightening the second lug and the first lug. The axial height of the first lug is higher than the axial height of the first annular cylinder, so that the first lug protrudes from the outer periphery of the first annular cylinder to the first flange. The axial height of the second lug is higher than the axial height of the second annular cylinder, so that the second lug protrudes from the outer periphery of the second annular cylinder to the second flange. The first lug and the second lug are axially fitted, which will not increase the distance between the first and second flanges, will not damage the axial gap between the original two end covers (the first and fourth end covers), will not affect the sealing, and while ensuring the tightening of the first and fourth end covers, it can also enhance their sealing and improve the general performance of the end covers.

[0059] In some embodiments,

[0060] The invention also includes a fastener 13, a first mounting hole 14 is axially penetrated on the first flange 6, a second mounting hole 15 is axially penetrated on the first lug 8, a third mounting hole 16 is axially penetrated on the second lug 12, and a fourth mounting hole 17 is axially penetrated on the second flange 10. The first mounting hole 14, the second mounting hole 15, the third mounting hole 16 and the fourth mounting hole 17 are opposite to each other in the axial direction, and the fastener 13 passes through the first mounting hole 14, the second mounting hole 15, the third mounting hole 16 and the fourth mounting hole 17 in sequence to fix the first end cover 1, the second end cover 2, the third end cover 3 and the fourth end cover 4 as a whole; or the fastener 13 passes through the fourth mounting hole 17, the third mounting hole 16, the second mounting hole 15 and the first mounting hole 14 in sequence to fix the first end cover 1, the second end cover 2, the third end cover 3 and the fourth end cover 4 as a whole.

[0061] The present invention further provides a first mounting hole on the first flange, a second mounting hole on the first lug, a third mounting hole on the second lug, and a fourth mounting hole on the second flange, so that the four mounting holes are arranged relative to each other in the axial direction, so that the four end covers are fastened together by fasteners passing through the four mounting holes. The fastener 13 preferably includes a screw 131 and a nut 132.

[0062] In some embodiments,

[0063] There are a plurality of first lugs 8, and the plurality of first lugs 8 are arranged at intervals along the circumferential direction of the first annular cylinder 7; there are a plurality of second mounting holes 15, and the second mounting holes 15 are arranged one-to-one correspondingly to the first lugs 8;

[0064] There are a plurality of second lugs 12 , which are spaced apart along the circumferential direction of the second annular cylinder 11 . There are a plurality of third mounting holes 16 , which are arranged one-to-one with the second lugs 12 .

[0065] The present invention further preferably has a plurality of first lugs which are spaced apart along the circumferential direction of the first annular cylinder, a plurality of second mounting holes, and a second mounting hole is provided on each first lug, and at the same time, a plurality of second lugs which are spaced apart along the circumferential direction of the second annular cylinder, a plurality of third mounting holes, and a third mounting hole is provided on each second lug, so that there are multiple groups of first lugs and second lugs which are matched and fastened in the circumferential direction, thereby improving the fastening effect and sealing effect between the first and fourth end covers.

[0066] In some embodiments,

[0067] The first mounting hole 14 is connected to the outer periphery of the first flange 6 to form an arc-shaped hole structure, the second mounting hole 15 is located at the position where the first lug 8 is connected to the first circular cylinder 7, and the third mounting hole 16 is located at the position where the second lug 12 is connected to the second circular cylinder 11; the fourth mounting hole 17 is connected to the outer periphery of the second flange 10 to form an arc-shaped hole structure.

[0068] This is the preferred structural form of the first to fourth mounting holes of the present invention, the first mounting hole is arranged at the outer periphery of the first flange, and the second mounting hole is arranged at the junction of the first lug and the first circular cylinder, so that the first mounting hole can be fitted with a portion of the second mounting hole on the first circular cylinder, and a portion of the second mounting hole on the first lug is located at the outer periphery of the first mounting hole, and they are spliced ​​to form a circular hole to accommodate the passage of a fastener; similarly, the fourth mounting hole is arranged at the outer periphery of the second flange, and the third mounting hole is arranged at the junction of the second lug and the second circular cylinder, so that the fourth mounting hole can be fitted with a portion of the third mounting hole on the second circular cylinder, and a portion of the third mounting hole on the second lug is located at the outer periphery of the fourth mounting hole, and they are spliced ​​to form a circular hole to accommodate the passage of a fastener.

[0069] In some embodiments,

[0070] The first flange 6 is also provided with a first spare mounting hole 20 extending therethrough in the axial direction. The first spare mounting hole 20 and the first mounting hole 14 are spaced apart in the circumferential direction. The second end cover 2 can be replaced according to the positions of the first mounting hole 14 and the first spare mounting hole 20.

[0071] The second flange 10 is also provided with a second spare mounting hole 21 axially therethrough. The second spare mounting hole 21 and the fourth mounting hole 17 are circumferentially spaced apart. The third end cover 3 can be replaced according to the positions of the fourth mounting hole 17 and the second spare mounting hole 21 .

[0072] The present invention also enables the second end cover to be replaced according to the positions of the first mounting hole and the first spare mounting hole through the first spare mounting hole on the first flange. For example, the first end cover can match a variety of second end covers. The positions of the second mounting holes of the various second end covers are not exactly the same, but they can be opposite to and installed with the first mounting hole and / or the first spare mounting hole on the first end cover, thereby further improving the universal performance; through the second spare mounting hole on the second flange, the third end cover can be replaced according to the positions of the fourth mounting hole and the second spare mounting hole. For example, the fourth end cover can match a variety of third end covers. The positions of the third mounting holes of the various third end covers are not exactly the same, but they can be opposite to and installed with the fourth mounting hole and / or the second spare mounting hole on the fourth end cover, thereby further improving the universal performance.

[0073] The existing iron shell motor end cover structure consists of an upper and lower end cover, with an intermediate end cover set between the upper and lower end covers, which are fastened by screws or rivets through the fastening holes, which will affect the gap between the original upper and lower end covers, affecting the sealing and versatility. At the same time, changes in the load installation dimensions will also affect the height and trimming of the end cover. At this time, due to the changes in the end cover, different end cover molds are often opened.

[0074] The end cap form proposed by the present invention is shown in Figure 1 , which is a combination of the first and fourth end covers with small cut edges (first flange and second flange) of the cylinder and the second and third end covers with large cut edges (first lug and second lug). An incomplete hole (including the first mounting hole and the first spare mounting hole) is set at the first flange of the first end cover, which can be combined into a mounting hole or a fastening hole, and different hole positions can be arranged according to different fastening holes or mounting holes. It is made by stamping using a stamping process to ensure the side concentricity and overall strength. The second end cover 2 and the third end cover 3 are both in the form of full cut edges (no cylinder, so it is called full cut edges), and the thickness is set to twice that of the first end cover. It can be made by die-casting process to reduce the amount of waste generated by stamping. The assembly sequence is as follows: As shown in the figure, first close the first and fourth end covers, then assemble the second end cover and the third end cover at a certain angle so that their fastening holes or mounting holes correspond, and then tighten the screws and nuts to achieve the tightening effect. It can be seen that after the assembly is completed, a certain number of holes are matched to become fastening holes (first mounting holes), and since the mounting holes are completely on the third end cover, a certain number of holes are not matched (first spare mounting holes). The solution of the present invention can effectively increase the combination of the end cover body and the trimming, and can meet the requirements of the size of the new end cover without opening a new mold.

[0075] In some embodiments,

[0076] The outer circumference of the first annular cylinder 7 is also provided with a third lug 18 protruding outward in the circumferential direction. The third lug 18 is provided with a fifth mounting hole 19. The third lug 18 can be connected to a load through the fifth mounting hole 19 on the third lug 18.

[0077] The present invention can also be connected to an external load through the third lug protruding toward the outer circumference on the first annular cylinder and the fifth mounting hole on the third lug.

[0078] In some embodiments,

[0079] The third lug 18 is spaced apart from the first lug 8 in the circumferential direction, the radial length of the third lug 18 is longer than the radial length of the first lug 8, and in the axial projection plane, the distance between the radial innermost end of the fifth mounting hole 19 and the center of the first annular cylinder 7 is a first distance, the distance between the radial outer end of the first lug 8 and the center of the first annular cylinder 7 is a second distance, and the first distance is greater than the second distance.

[0080] The present invention arranges the third lug and the first lug at an interval in the circumferential direction so that there is no interference between the two. The radial length of the third lug is longer than the radial length of the first lug. In particular, the radial innermost end of the fifth mounting hole is located on the circle on the outer circumferential side of the radial outer end of the first lug. When the load is installed through the third lug, it can be installed on the outer circumference of the first lug by using bolts or other structures, thereby not affecting the fastening effect of the first lug and the second lug, and further improving the fastening performance and sealing performance of the split end cover.

[0081] In some embodiments,

[0082] The second end cover 2 and / or the third end cover 3 can be replaced according to the different mounting holes on the load; the second end cover 2 can be replaced according to the size of the outer diameter of the first cylindrical body 5, and the third end cover 3 can be replaced according to the size of the outer diameter of the second cylindrical body 9.

[0083] The second and / or third end cover of the present invention can be replaced according to the different mounting holes on the load. For example, when the load has more and denser mounting holes distributed in the circumferential direction, the second end cover with more and denser fifth mounting holes on the third lug can be selected for matching. Since the third lug changes, the first lug will also change accordingly. Therefore, the third end cover will also select the structure of the second lug that matches it according to the matching situation with the second end cover, thereby improving the universal performance of the connection between the end cover and the load; the second end cover can be replaced according to the outer diameter of the first cylindrical body, and the third end cover can be replaced according to the outer diameter of the second cylindrical body, which can further improve the universal performance of the split end cover.

[0084] In some embodiments,

[0085] There are a plurality of third lugs 18, and the plurality of third lugs 18 are arranged at intervals along the circumferential direction of the first annular cylinder 7; there are a plurality of fifth mounting holes 19, and the fifth mounting holes 19 are arranged one-to-one correspondingly to the third lugs 18;

[0086] When there are a plurality of first lugs 8 , the first lugs 8 and the third lugs 18 are alternately arranged along the circumferential direction.

[0087] The present invention uses multiple third lugs to ensure that there are multiple groups of third lugs and load-matched fastening structures in the circumferential direction, which can improve the fastening effect and sealing effect between the second end cover and the load; the first and third lugs are alternately arranged, which can ensure the uniformity of the fastening inside the end cover and the uniformity of the fastening between the end cover and the external load, that is, the fastening stress is evenly distributed in the circumferential direction.

[0088] The present invention also provides a motor, which comprises the aforementioned split end cover.

[0089] The present invention provides a split-assembly end cap structure, which is assembled by end caps (first and fourth end caps) with cylindrical small trimming edges (i.e., first and second flanges) and end caps (second and third end caps) with full trimming edges (first and second lugs). The hole positions of the small trimming edges are combined with the hole positions of the full trimming edges, and motors with different installation angles and different installation diameters can be assembled and combined, greatly expanding the existing universal library of end caps. It can solve the problem that the existing end caps are not universal due to trimming and height size changes, and need to be newly made. At the same time, it can also not destroy the axial gap between the original two end caps, and will not affect the sealing performance, thereby improving the universality and the sealing performance of the motor.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A split end cover, characterized in that: include: A first end cover (1), a second end cover (2), a third end cover (3) and a fourth end cover (4), wherein the first end cover (1) comprises a first cylindrical body (5) and a first flange (6), wherein one axial end of the first cylindrical body (5) is closed and the other axial end is open, wherein the first cylindrical body (5) has a first accommodating space inside, and the axially open end of the first cylindrical body (5) is provided with the first flange (6) protruding outward in the circumferential direction, and the second end cover (2) comprises a first annular cylinder (7) and a first lug (8), wherein the first lug (8) is a protruding structure provided on the outer circumference of the first annular cylinder (7) and protruding outward in the circumferential direction, and the first annular cylinder (7) is sleeved on the outer circumference of the first cylindrical body (5); The fourth end cover (4) comprises a second cylindrical body (9) and a second flange (10), the second cylindrical body (9) is closed at one axial end and open at the other axial end, the second cylindrical body (9) has a second accommodating space inside, the axially open end of the second cylindrical body (9) protrudes outwardly in the circumferential direction with the second flange (10), the third end cover (3) comprises a second annular cylinder (11) and a second lug (12), the second lug (12) is a protruding structure arranged on the outer circumference of the second annular cylinder (11) and protruding outwardly in the circumferential direction, and the second annular cylinder (11) is sleeved on the outer circumference of the second cylindrical body (9); The first flange (6) and the second flange (10) are axially opposite and closely arranged, so that the first accommodating space and the second accommodating space enclose a closed space to accommodate the stator and the rotor, and the first end cover (1), the second end cover (2), the third end cover (3) and the fourth end cover (4) are fixed as a whole through the first lug (8) and the second lug (12); the first end cover (1) and / or the fourth end cover (4) can be replaced according to stators of different heights.

2. The split end cover according to claim 1, characterized in that: The first annular cylinder (7) is arranged in close contact with the first flange (6) in the axial direction, and the second annular cylinder (11) is arranged in close contact with the second flange (10) in the axial direction; the axial height of the first lug (8) is higher than the axial height of the first annular cylinder (7), and extends in the direction of the third end cover (3); the axial height of the second lug (12) is higher than the axial height of the second annular cylinder (11), and extends in the direction of the second end cover (2); so that the first lug (8) and the second lug (12) can be arranged in close contact with each other in the axial direction.

3. The split end cover according to claim 1 or 2, characterized in that: The invention also comprises a fastener (13), wherein a first mounting hole (14) is axially penetrated on the first flange (6), a second mounting hole (15) is axially penetrated on the first lug (8), a third mounting hole (16) is axially penetrated on the second lug (12), and a fourth mounting hole (17) is axially penetrated on the second flange (10), wherein the first mounting hole (14), the second mounting hole (15), the third mounting hole (16) and the fourth mounting hole (17) are opposite to each other in the axial direction, and the fastener (13) passes through the first mounting hole (14), the second mounting hole (15), the third mounting hole (16) and the fourth mounting hole (17) in sequence. The first mounting hole (14), the second mounting hole (15), the third mounting hole (16) and the fourth mounting hole (17) are used to fix the first end cover (1), the second end cover (2), the third end cover (3) and the fourth end cover (4) as a whole; or the fastener (13) passes through the fourth mounting hole (17), the third mounting hole (16), the second mounting hole (15) and the first mounting hole (14) in sequence to fix the first end cover (1), the second end cover (2), the third end cover (3) and the fourth end cover (4) as a whole.

4. The split end cover according to claim 3, characterized in that: There are a plurality of first lugs (8), and the plurality of first lugs (8) are arranged at intervals along the circumferential direction of the first annular cylinder (7); there are a plurality of second mounting holes (15), and the second mounting holes (15) are arranged in one-to-one correspondence with the first lugs (8); There are a plurality of second lugs (12), and the plurality of second lugs (12) are arranged at intervals along the circumferential direction of the second annular cylinder (11); there are a plurality of third mounting holes (16), and the third mounting holes (16) are arranged in one-to-one correspondence with the second lugs (12).

5. The split end cover according to claim 3, characterized in that: The first mounting hole (14) is connected to the outer periphery of the first flange (6) to form an arc-shaped hole structure; the second mounting hole (15) is located at a position where the first lug (8) is connected to the first circular cylinder (7); the third mounting hole (16) is located at a position where the second lug (12) is connected to the second circular cylinder (11); and the fourth mounting hole (17) is connected to the outer periphery of the second flange (10) to form an arc-shaped hole structure.

6. The split end cover according to claim 3, characterized in that: The first flange (6) is also provided with a first spare mounting hole (20) penetrating in the axial direction, the first spare mounting hole (20) and the first mounting hole (14) being arranged at intervals in the circumferential direction, and the second end cover (2) can be replaced according to the positions of the first mounting hole (14) and the first spare mounting hole (20); The second flange (10) is also provided with a second spare mounting hole (21) extending axially therethrough, the second spare mounting hole (21) and the fourth mounting hole (17) being spaced apart in the circumferential direction, and the third end cover (3) can be replaced according to the positions of the fourth mounting hole (17) and the second spare mounting hole (21).

7. The split end cover according to any one of claims 1 to 6, characterized in that: The outer circumference of the first annular cylinder (7) is also provided with a third lug (18) protruding outward in the circumferential direction, and the third lug (18) is provided with a fifth mounting hole (19), and the load can be mounted and connected through the fifth mounting hole (19) on the third lug (18).

8. The split end cover according to claim 7, characterized in that: The third lug (18) and the first lug (8) are spaced apart in the circumferential direction, the radial length of the third lug (18) is longer than the radial length of the first lug (8), and in the axial projection plane, the distance between the radial innermost end of the fifth mounting hole (19) and the center of the first annular cylinder (7) is a first distance, the distance between the radial outer end of the first lug (8) and the center of the first annular cylinder (7) is a second distance, and the first distance is greater than the second distance.

9. The split end cover according to claim 7, characterized in that: The second end cover (2) and / or the third end cover (3) can be replaced according to different mounting holes on the load; the second end cover (2) can be replaced according to the size of the outer diameter of the first cylindrical body (5), and the third end cover (3) can be replaced according to the size of the outer diameter of the second cylindrical body (9).

10. The split end cover according to claim 7, characterized in that: There are a plurality of third lugs (18), and the plurality of third lugs (18) are arranged at intervals along the circumferential direction of the first annular cylinder (7); there are a plurality of fifth mounting holes (19), and the fifth mounting holes (19) are arranged in one-to-one correspondence with the third lugs (18); When there are a plurality of first lugs (8), the first lugs (8) and the third lugs (18) are arranged alternately along the circumferential direction.

11. A motor, characterized in that: The invention comprises the split end cover according to any one of claims 1 to 10.

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