A high-efficiency heat dissipation motor and motor end cover

Abstract

The present application discloses a high-efficiency heat dissipation motor and a motor end cover, wherein the motor end cover comprises an end cover body, a first baffle unit, a second baffle unit and a third baffle unit, wherein the first baffle unit, the second baffle unit and the third baffle unit are all installed on the end cover body, wherein the first baffle unit has a plurality of first vents, the second baffle unit has a plurality of second vents, and the third baffle unit has a plurality of third vents. The motor and motor end cover of the present application adopt a design of a plurality of baffle units. In the initial state, there are three baffle units, and the size and number of the vents of the baffle units are limited. Thus, after a period of use, the third baffle unit can be removed, and after a period of use, the second baffle unit can be taken out, so that the flocs at the end cover are well cleaned, and the motor runs in a better state. The baffle unit is accurately positioned when installed. And it is easy to remove.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and more specifically, to a high-efficiency heat dissipation motor and a motor end cover. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy through electromagnetic action. Motors play an important role in modern society and are widely used in transportation, industrial production, household appliances, agricultural machinery and other fields. With the continuous advancement of science and technology and the continuous development of motor technology, the application fields of motors will become more extensive, bringing more convenience and benefits to human production and life.

[0003] The motor will generate a lot of heat during operation. If the heat cannot be dissipated in time, the motor temperature will rise, which will affect the performance and life of the motor. A rotor unit will be installed on the shaft inside the motor for heat dissipation. However, after long-term operation, the motor end cover, especially the edge of the air inlet hole of the end cover at the air inlet end, will be stained with a lot of flocculent objects. If it is not cleaned for a long time, it will affect the air intake effect and thus affect the heat dissipation of the motor. However, it is very difficult to clean the flocculent objects on the edge of the air inlet hole. These flocculent objects may be tightly attached to the edge of the air inlet hole, which is not convenient to clean. In addition, sometimes the location where the motor is installed has a small space, making it difficult to clean. In addition, it is necessary to avoid damage to the internal parts of the motor during the cleaning process, which increases the complexity and risk of the cleaning work. Summary of the invention

[0004] The present invention aims to overcome the defects of the prior art and provide a motor with high efficiency in heat dissipation and a motor end cover.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motor end cover, comprising an end cover body, a first baffle unit, a second baffle unit and a third baffle unit, wherein the first baffle unit, the second baffle unit and the third baffle unit are all installed on the end cover body, the first baffle unit has a plurality of first ventilation holes, the second baffle unit has a plurality of second ventilation holes, and the third baffle unit has a plurality of third ventilation holes.

[0006] Furthermore, the first ventilation holes, the second ventilation holes and the third ventilation holes are all circular holes and their diameters decrease successively; the number of the first ventilation holes, the second ventilation holes and the third ventilation holes are equal and correspond one to one, and the axes of the corresponding first ventilation holes, the second ventilation holes and the third ventilation holes are collinear.

[0007] Therefore, the first, second and third ventilation holes are aligned one by one, so as to obtain a better heat dissipation effect.

[0008] Furthermore, the end cover body includes an inner annular plate, an outer annular plate, an inner circular plate fixedly connected to the inner annular plate, an outer circular plate fixedly connected to the outer annular plate, an end circular plate fixedly connected to the outer annular plate, a plurality of radial connecting rods connecting the inner annular plate and the outer annular plate, and a plurality of side protrusions fixedly connected to the end circular plates, wherein the side protrusions have mounting through holes.

[0009] Furthermore, the plurality of radial connecting rods are distributed in a ring shape with equal intervals.

[0010] Furthermore, the number of the radial connecting rods is 4.

[0011] Other numbers of radial connecting rods can also be selected as required.

[0012] Furthermore, the motor end cover also includes a locking portion, which has a rotating sleeve and an end baffle fixedly connected to the rotating sleeve, the end baffle has a through hole portion, the inner annular plate has an external thread, and the rotating sleeve has an internal thread matching the external thread.

[0013] The through hole can be passed through by the rotating shaft of the motor. Thus, the locking part can further lock and fix the first, second and third baffle units, so that the first, second and third baffle units are more stably fixed to the end cover body.

[0014] Further, the first baffle unit includes two first half baffles and a first connecting spring piece connecting the two first half baffles, the first half baffle includes a first inner arc flange, a first outer arc flange, a first plate body connected between the first inner arc flange and the first outer arc flange, and a first extension plate fixedly connected to the first outer arc flange, and when there is no external force, the first connecting spring piece makes the opening angle of the two first half baffles greater than 20 degrees; the second baffle unit includes two second half baffles and a second connecting spring piece connecting the two second half baffles, the second half baffle includes a second inner arc flange, a second outer arc flange, a first plate body connected between the first inner arc flange and the first outer arc flange, and a first extension plate fixedly connected to the first outer arc flange, and when there is no external force, the first connecting spring piece makes the opening angle of the two first half baffles greater than 20 degrees; The second plate body between the inner arc flange and the second outer arc flange and the second extension plate fixedly connected to the second outer arc flange, when there is no external force, the second connecting spring makes the opening angle of the two second half baffles greater than 20 degrees; the third baffle unit includes two third half baffles and a third connecting spring connecting the two third half baffles, the third half baffle includes a third inner arc flange, a third outer arc flange, a third plate body connected between the third inner arc flange and the third outer arc flange, and a third extension plate fixedly connected to the third outer arc flange, when there is no external force, the third connecting spring makes the opening angle of the two third half baffles greater than 20 degrees.

[0015] Furthermore, the inner side of the first inner arc-shaped flange has a first thread that cooperates with the outer thread, the inner side of the second inner arc-shaped flange has a second thread that cooperates with the outer thread, and the inner side of the third inner arc-shaped flange has a third thread that cooperates with the outer thread.

[0016] Therefore, the first, second and third baffle units themselves can also be screwed tightly with the end cover body.

[0017] In some other embodiments, there are no threads on the first, second and third inner arc-shaped flanges.

[0018] Due to the locking portion, there are no threads at the first, second and third inner arc-shaped flanges, and the first, second and third baffle units can also be installed normally.

[0019] Furthermore, the two first plate bodies of the first baffle unit can be spliced ​​into a first annular plate.

[0020] Furthermore, the two second plate bodies of the second baffle unit can be spliced ​​into a second annular plate.

[0021] Furthermore, the two third plate bodies of the third baffle unit can be spliced ​​into a third annular plate.

[0022] Further, the rotating sleeve can abut against the first inner arc-shaped flange, the second inner arc-shaped flange and the third inner arc-shaped flange.

[0023] Furthermore, the first ventilation hole is located at the first plate body; the second ventilation hole is located at the second plate body; and the third ventilation hole is located at the third plate body.

[0024] Furthermore, the first outer arc-shaped flange has a first arc-shaped groove, and the first connecting spring is connected between the first arc-shaped grooves of the two first half baffles; the second outer arc-shaped flange has a second arc-shaped groove, and the second connecting spring is connected between the second arc-shaped grooves of the two second half baffles; the third outer arc-shaped flange has a third arc-shaped groove, and the third connecting spring is connected between the third arc-shaped grooves of the two third half baffles.

[0025] Therefore, the installation of the first, second and third connecting spring pieces is more reasonable. After the installation is completed, the positions of the first, second and third connecting spring pieces do not exceed the outer circumferential surfaces of the first, second and third outer arc-shaped flanges.

[0026] Furthermore, it also includes a positioning unit, the first extension plate, the second extension plate and the third extension plate are all arc plates, the outer diameter of the first extension plate, the outer diameter of the first outer arc flange and the inner diameter of the outer ring plate are equal; the outer diameter of the second extension plate, the outer diameter of the second outer arc flange and the inner diameter of the first extension plate are equal; the outer diameter of the third extension plate, the outer diameter of the third outer arc flange and the inner diameter of the second extension plate are equal; a first limit block is fixed at the end of the second extension plate, and a second limit block is fixed at the end of the third extension plate, the first extension plate has a first limit hole, the first limit block has a second limit hole, and the second limit block has a third limit hole; the positioning unit includes a first plug rod, a second plug rod, an arc connecting rod connecting the first plug rod and the second plug rod, and a movable plug rod, the second plug rod has a plug hole, the arc connecting rod has a through hole connected to the plug hole, the movable plug rod is connected to a plug rod capable of being inserted into the plug hole, and the plug rod is connected to a threading rope capable of passing through the through hole.

[0027] Therefore, under normal circumstances, since the movable plug rod is installed through the matching of the plug rod and the plug hole, the arc-shaped connecting rod, the first plug rod, the second plug rod and the movable plug rod can form a whole.

[0028] Furthermore, the end of the first insertion rod is located in one of the first limiting holes, one end of the movable insertion rod is located in the other first limiting hole, and the other end is located in the second limiting hole.

[0029] Therefore, the first plug rod is mainly used for positioning the first, second and third baffle units, and the movable plug rod is mainly used for positioning the first and second baffle units.

[0030] Furthermore, elastic rubber sleeves are fixed to the outside of the first plug rod and the outside of the movable plug rod.

[0031] Therefore, the elastic rubber sleeve at the first plug rod enables the first plug rod to fit tightly with the first, second and third limiting holes. The elastic rubber sleeve at the movable plug rod enables the movable plug rod to fit tightly with the first and second limiting holes. When the entire body consisting of the arc connecting rod, the first plug rod and the second plug rod is pulled out, the movable plug rod will continue to stay in the first limiting hole and the second limiting hole.

[0032] Furthermore, the arc-shaped connecting rod is connected to a U-shaped handle portion.

[0033] Therefore, it is more convenient to pull out the whole formed by the arc connecting rod, the first inserting rod and the second inserting rod.

[0034] The present application also discloses a motor, comprising a housing, a rotating shaft, a stator installed in the housing, a rotor installed at the rotating shaft, a rotor unit installed at the rotating shaft, and a motor end cover as described in any one of the above, wherein the housing comprises a surrounding shell and an end shell fixedly connected to the surrounding shell, the end shell has a plurality of air outlets, a first bearing is installed at the end cover body, a second bearing is installed at the end shell, and the first bearing and the second bearing are both connected to the rotating shaft;

[0035] Furthermore, the rotating blade unit includes a wheel installed on the rotating shaft and a plurality of blades installed on the wheel and distributed in a ring shape with equal intervals; the surrounding shell is in the shape of an annular cylinder, and the outer circumferential surface of the surrounding shell has a plurality of strip-shaped protrusions; the end shell has a bearing mounting hole for installing the second bearing; the first bearing is installed on the inner annular plate; the surrounding shell has a threaded hole, and the end cover body and the surrounding shell are fixed by bolts.

[0036] Furthermore, the number of the side protrusions is equal to the number of the threaded holes, and the bolts pass through the mounting through holes and cooperate with the threaded holes to fix the motor end cover and the housing; the surrounding shell has a plurality of groove portions, the number of the groove portions is equal to the number of the side protrusions, and each side protrusion is accommodated in one of the groove portions.

[0037] Therefore, the fixing of the housing and the motor end cover is tighter and more stable.

[0038] The present application also discloses a motor maintenance method based on the above motor, comprising the following steps:

[0039] 1) Loosen the locking part and pull out the whole consisting of the first plug rod, the arc-shaped connecting rod and the second plug rod;

[0040] 2) Unscrew the third baffle unit and take away the third baffle unit;

[0041] 3) Tighten the locking portion;

[0042] 4) After the set time, loosen the tightening part and pull out the movable plug;

[0043] 5) Unscrew the second baffle unit and remove the second baffle unit;

[0044] 6) Tighten the locking portion.

[0045] Furthermore, the set time is three months or six months.

[0046] Beneficial effects: 1. The motor and motor end cover of the present application adopt a design of multiple baffle units. In the initial state, there are three baffle units, and the size and number of the ventilation holes of the baffle units are limited. Therefore, after using for a period of time, the third baffle unit can be removed, and after using for a period of time, the second baffle unit can be removed, so that the floccules at the end cover can be well cleaned, so that the motor runs in a better state.

[0047] 2. The baffle unit of the present application is accurately positioned during installation and is easy to remove, even in a usage scenario where the shaft is long, the baffle unit can be easily removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of the motor end cover from the first perspective;

[0049] Figure 2 This is a schematic diagram of the motor end cover from the second perspective;

[0050] Figure 3 This is a first-person perspective diagram of the motor end cover component separation;

[0051] Figure 3A This is an enlarged view of the 3A area;

[0052] Figure 4 A schematic diagram showing the separation of the motor end cover components from a second perspective;

[0053] Figure 4A This is an enlarged view of area 4A;

[0054] Figure 5 is the schematic diagram of the motor;

[0055] Figure 5A This is a schematic diagram of the first, second and third baffle units when installed;

[0056] Figure 5B Schematic diagram of pulling out the arc-shaped connecting rod to release the locking part;

[0057] Figure 5C A schematic diagram of the third baffle unit rotating outward;

[0058] Figure 5D A schematic diagram of the separation of the two third half baffles under the elastic force of the third connecting spring piece;

[0059] Figure 5E To remove the third baffle unit, tighten the locking portion again;

[0060] Fig. 5F To loosen the locking part, pull out the movable rod;

[0061] Figure 5GA schematic diagram of the second baffle unit rotating outward;

[0062] Figure 5H A schematic diagram of the two second half baffles being separated under the elastic force of the second connecting spring sheet;

[0063] Fig.5I To remove the second baffle unit, tighten the locking portion. DETAILED DESCRIPTION

[0064] Figure numerals: 1 first baffle unit; 1.1 first plate body; 1.1.1 first ventilation hole; 1.2 first connecting spring piece; 1.3 first inner arc-shaped flange; 1.4 first outer arc-shaped flange; 1.5 first extension plate; 1.5.1 first limiting hole; 2 second baffle unit; 2.1 second plate body; 2.1.1 second ventilation hole; 2.2 second connecting spring piece; 2.3 second inner arc-shaped flange; 2.4 second outer arc-shaped flange; 2.5 second extension plate; 2.6 first limiting block; 2.6.1 second limiting hole; 3 third baffle unit; 3.1 third plate body; 3.1.1 third ventilation hole; 3.2 third connecting spring piece; 3.3 third inner arc-shaped flange; 3.4 third outer arc-shaped flange; 3.5 third 3. Extension plates; 3.6 Second limiting block; 3.6.1 Third limiting hole; 4 End cover body; 4.1 Inner annular plate; 4.2 Outer annular plate; 4.3 Inner circular plate; 4.4 Outer circular plate; 4.5 End circular plate; 4.6 Radial connecting rod; 4.7 Side protrusion; 4.7.1 Mounting through hole; 5 Locking part; 5.1 Rotating sleeve; 5.2 End baffle; 6.1 First plug rod; 6.2 Second plug rod; 6.2.1 Plug hole; 6.3 Arc connecting rod; 6.3.1 Through hole; 6.4 Movable plug rod; 6.5 Plug rod with jack; 6.6 Rope threading; 6.7 U-shaped handle; 7.1 Surrounding shell; 7.1.1 Strip protrusion; 7.2 End shell; 7.2.1 Air outlet; 7.3 Second bearing; 8 Rotating shaft.

[0065] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0066] Example 1 Figure 1-4As shown, a motor end cover includes an end cover body 4, a first baffle unit 1, a second baffle unit 2 and a third baffle unit 3, wherein the first baffle unit 1, the second baffle unit 2 and the third baffle unit 3 are all installed on the end cover body 4, the first baffle unit 1 has a plurality of first ventilation holes 1.1.1, the second baffle unit 2 has a plurality of second ventilation holes 2.1.1, and the third baffle unit 3 has a plurality of third ventilation holes 3.1.1. The first ventilation holes 1.1.1, the second ventilation holes 2.1.1 and the third ventilation holes 3.1.1 are all circular holes with decreasing diameters; the number of the first ventilation holes 1.1.1, the second ventilation holes 2.1.1 and the third ventilation holes 3.1.1 is equal and corresponds to each other, and the axes of the corresponding first ventilation holes 1.1.1, the second ventilation holes 2.1.1 and the third ventilation holes 3.1.1 are collinear. The end cover body 4 includes an inner ring plate 4.1, an outer ring plate 4.2, an inner circular plate 4.3 fixedly connected to the inner ring plate 4.1, an outer circular plate 4.4 fixedly connected to the outer ring plate 4.2, an end circular plate 4.5 fixedly connected to the outer ring plate 4.2, a plurality of radial connecting rods 4.6 connecting the inner ring plate 4.1 and the outer ring plate 4.2, and a plurality of side protrusions 4.7 fixedly connected to the end circular plate 4.5, wherein the side protrusions 4.7 have mounting through holes 4.7.1. The motor end cover also includes a locking portion 5, wherein the locking portion has a rotating sleeve 5.1 and an end baffle 5.2 fixedly connected to the rotating sleeve 5.1, wherein the end baffle 5.2 has a through hole portion, the inner circular plate 4.3 has an external thread, and the rotating sleeve 5.1 has an internal thread matching the external thread.

[0067] The first baffle unit 1 includes two first half baffles and a first connecting spring piece 1.2 connecting the two first half baffles, the first half baffle includes a first inner arc flange 1.3, a first outer arc flange 1.4, a first plate body 1.1 connected between the first inner arc flange 1.3 and the first outer arc flange 1.4, and a first extension plate 1.5 fixedly connected to the first outer arc flange 1.4, when there is no external force, the first connecting spring piece 1.2 makes the opening angle of the two first half baffles greater than 20 degrees, and the inner side of the first inner arc flange 1.3 has a first thread that matches the external thread; the second baffle unit 2 includes two second half baffles and a second connecting spring piece 2.2 connecting the two second half baffles, the second half baffle includes a second inner arc flange 2.3, a second outer arc flange 2.4, a first plate body 1.1 connected between the first inner arc flange 2.3 and the second outer arc flange 2.4 The second plate body 2.1 between the two baffles and the second extension plate 2.5 fixedly connected to the second outer arc flange 2.4, when there is no external force, the second connecting spring piece 2.2 makes the opening angle of the two second half baffles greater than 20 degrees, and the inner side of the second inner arc flange 2.3 has a second thread that cooperates with the external thread; the third baffle unit 3 includes two third half baffles and a third connecting spring piece 3.2 connecting the two third half baffles, the third half baffle includes a third inner arc flange 3.3, a third outer arc flange 3.4, a third plate body 3.1 connected between the third inner arc flange 3.3 and the third outer arc flange 3.4, and a third extension plate 3.5 fixedly connected to the third outer arc flange 3.4, when there is no external force, the third connecting spring piece 3.2 makes the opening angle of the two third half baffles greater than 20 degrees, and the inner side of the third inner arc flange 3.3 has a third thread that cooperates with the external thread.

[0068] The first outer arc-shaped flange 1.4 has a first arc-shaped groove, and the first connecting spring piece 1.2 is connected between the first arc-shaped grooves of the two first half baffles; the second outer arc-shaped flange 2.4 has a second arc-shaped groove, and the second connecting spring piece 2.2 is connected between the second arc-shaped grooves of the two second half baffles; the third outer arc-shaped flange 3.4 has a third arc-shaped groove, and the third connecting spring piece 3.2 is connected between the third arc-shaped grooves of the two third half baffles. The motor end cover also includes a positioning unit, the first extension plate 1.5, the second extension plate 2.5 and the third extension plate 3.5 are all arc plates, the outer diameter of the first extension plate 1.5, the outer diameter of the first outer arc flange 1.4 and the inner diameter of the outer ring plate 4.4 are equal; the outer diameter of the second extension plate 2.5, the outer diameter of the second outer arc flange 2.4 and the inner diameter of the first extension plate 1.5 are equal; the outer diameter of the third extension plate 3.5, the outer diameter of the third outer arc flange 3.4 and the inner diameter of the second extension plate 2.5 are equal; the end of the second extension plate 2.5 is fixed with a first limit block 2.6, the end of the third extension plate 3.5 is fixed with a second limit block 3.6, the first extension plate 1.5 has a first limit hole 1.5.1, the first limit block 2.6 has a second limit hole 2.6.1, and the second limit block 3.6 has a There is a third limiting hole 3.6.1; the positioning unit includes a first plug rod 6.1, a second plug rod 6.2, an arc-shaped connecting rod 6.3 connecting the first plug rod 6.1 and the second plug rod 6.2, and a movable plug rod 6.4, the second plug rod 6.2 has a plug hole 6.2.1, the arc-shaped connecting rod 6.3 has a through hole 6.3.1 connected to the plug hole, the movable plug rod 6.4 is connected to a plug rod 6.5 that can be inserted into the plug hole 6.2.1, and the plug rod 6.5 is connected to a threading rope 6.6 that can pass through the through hole 6.3.1; the end of the first plug rod 6.1 is located in one of the first limiting holes 1.5.1, one end of the movable plug rod 6.4 is located in another first limiting hole 1.5.1, and the other end is located in the second limiting hole 2.6.1; elastic rubber sleeves are fixed to the outside of the first plug rod 6.1 and the movable plug rod 6.4.

[0069] Working principle: As shown in the figure, the motor end cover of the present application is used to be placed at one end of the air inlet of the motor. The heat dissipation airflow enters from the motor end cover, and at this time, the first, second and third ventilation holes correspond to each other, and the axes of the corresponding first ventilation hole 1.1.1, second ventilation hole 2.1.1 and third ventilation hole 3.1.1 are collinear. Therefore, the heat dissipation airflow passes through the third ventilation hole 3.1.1, the second ventilation hole 2.1.1 and the first ventilation hole 1.1.1 in sequence. After long-term use, floccules are easily hung on the edge of the third ventilation hole 3.1.1 (the second ventilation hole 2.1.1 and the first ventilation hole 1.1.1 are located behind the third baffle unit 3, so that the edges of the second ventilation hole 2.1.1 and the first ventilation hole 1.1.1 can be kept clean and not easily stained with floccules). After a period of use, the third baffle unit 3 can be removed. After a period of continued use, the edge of the second ventilation hole 2.1.1 will be stained with floccules, and the second baffle unit 2 can be removed, so that the first baffle unit 1 can be used for heat dissipation. After the first baffle unit 1 has been used for a period of time, the first baffle unit 1 can be removed and cleaned, and then the first, second and third baffle units are assembled together and installed on the end cover body 4 for the next cycle of use.

[0070] Example 2 Figure 5 As shown, a high-efficiency heat dissipation motor includes a shell, a rotating shaft 8, a stator installed in the shell, a rotor installed at the rotating shaft, a rotor unit installed at the rotating shaft and the motor end cover described in Example 1, the shell includes a surrounding shell 7.1 and an end shell 7.2 fixedly connected to the surrounding shell 7.1, the end shell 7.2 has a plurality of air outlet holes 7.2.1 (the air outlet holes are used for air outlet and are relatively less likely to be stained with flocs, which will be blocked at the motor end cover), a first bearing is installed at the end cover body 4, a second bearing 7.3 is installed at the end shell 7.2, and the first bearing and the second bearing 7.3 are both connected to the rotating shaft 8. The blade unit includes a runner installed at the rotating shaft and a plurality of blades installed at the runner and distributed in an annular manner with equal spacing; the surrounding shell 7.1 is in an annular cylindrical shape, and the outer circumferential surface of the surrounding shell 7.1 has a plurality of strip-shaped protrusions 7.1.1; the end shell 7.2 has a bearing mounting hole for mounting the second bearing 7.3; the first bearing is mounted at the inner annular plate 4.3; the surrounding shell 7.1 has a threaded hole, and the end cover body 4 and the surrounding shell 7.1 are fixed by bolts. The number of the side protrusions 4.7 is equal to the number of the threaded holes, and the bolts pass through the mounting through holes 4.7.1 and cooperate with the threaded holes to fix the motor end cover and the housing; the surrounding shell 7.1 has a plurality of grooves, and the number of the grooves is equal to the number of the side protrusions 4.7, and each side protrusion 4.7 is accommodated in one of the grooves.

[0071] Working principle: As shown in the figure, the motor of the present application, when the first, second and third baffle units are installed at the end cover body 4, the positions of the first, second and third baffle units correspond, and the positioning unit is inserted into the first limiting hole 1.5.1, the second limiting hole 2.6.1 and the third limiting hole 3.6.1, and the elastic rubber sleeve makes the positioning unit and the first, second and third limiting holes cooperate more closely, so that the first, second and third baffle units form a whole (and at this time, under the action of the positioning unit, on the one hand, the elastic force of the first, second and third connecting springs can be overcome, so that the first, second and third baffle units are closed, and on the other hand, the positions of the first, second and third ventilation holes can ensure one-to-one correspondence), the first, second and third baffle units and the external threads of the inner ring plate 4.3 are tightened, and then the locking part 5 is tightened, so that the first, second and third baffle units are well installed. The heat dissipation airflow enters from the motor end cover and is discharged from the air outlet 7.2.1 of the end shell 7.2.

[0072] After using for a period of time, the edge of the third ventilation hole 3.1.1 of the third baffle unit 3 will be stained with floccules, and the third baffle unit 3 needs to be removed. After using for a period of time, the edge of the second ventilation hole 2.1.1 will be stained with floccules, and the second baffle unit 2 can be removed. The specific steps are as follows:

[0073] 1) Loosen the locking part 5 and pull out the whole consisting of the first plug rod 6.1, the arc-shaped connecting rod 6.3 and the second plug rod 6.2;

[0074] 2) Unscrew the third baffle unit 3. When unscrewing out, the third baffle unit 3 is still in a closed state. When the outer ring plate 4.4 is unscrewed out, the third baffle unit 3 will open, so that the third baffle unit 3 can be easily removed;

[0075] 3) Tighten the locking portion 5 so that the locking portion 5 can abut against the inner arc-shaped flange of the second baffle unit 2, so that the second baffle unit 2 and the first baffle unit 1 are well installed, so that the motor can dissipate heat normally;

[0076] 4) After a set time (the set time can be selected according to the actual use and the cleanliness of the use environment, for example, three months or six months), loosen the tightening part 5, and use the threading rope 6.6 to pull out the movable plug rod 6.4;

[0077] 5) Unscrew the second baffle unit 2 and take away the second baffle unit 2;

[0078] 6) Tighten the locking portion 5.

[0079] Due to the structure of the first, second and third baffle units, they are easy to remove. In addition, if the motor shaft 8 is longer or other components are connected to the end of the motor shaft 8, the first, second and third baffle units can also be opened and removed from the side of the motor shaft 8 without having to be removed from the end of the motor shaft 8.

[0080] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A motor end cover, characterized in that: The invention comprises an end cover body, a first baffle unit, a second baffle unit and a third baffle unit, wherein the first baffle unit, the second baffle unit and the third baffle unit are all installed on the end cover body, the first baffle unit has a plurality of first ventilation holes, the second baffle unit has a plurality of second ventilation holes, and the third baffle unit has a plurality of third ventilation holes; The first baffle unit includes two first half baffles and a first connecting spring piece connecting the two first half baffles, the first half baffle includes a first inner arc flange, a first outer arc flange, a first plate body connected between the first inner arc flange and the first outer arc flange, and a first extension plate fixedly connected to the first outer arc flange, and when there is no external force, the first connecting spring piece makes the opening angle of the two first half baffles greater than 20 degrees; the second baffle unit includes two second half baffles and a second connecting spring piece connecting the two second half baffles, the second half baffle includes a second inner arc flange, a second outer arc flange, a first plate body connected between the first inner arc flange and the first outer arc flange, and a first extension plate fixedly connected to the first outer arc flange, and when there is no external force, the first connecting spring piece makes the opening angle of the two first half baffles greater than 20 degrees; The second plate body between the inner arc flange and the second outer arc flange and the second extension plate fixedly connected to the second outer arc flange, the second connecting spring piece makes the opening angle of the two second half baffles greater than 20 degrees when there is no external force; the third baffle unit includes two third half baffles and a third connecting spring piece connecting the two third half baffles, the third half baffle includes a third inner arc flange, a third outer arc flange, a third plate body connected between the third inner arc flange and the third outer arc flange, and a third extension plate fixedly connected to the third outer arc flange, and the third connecting spring piece makes the opening angle of the two third half baffles greater than 20 degrees when there is no external force; The end cover body comprises an inner annular plate, an outer annular plate, an inner circular plate fixedly connected to the inner annular plate, an outer circular plate fixedly connected to the outer annular plate, an end circular plate fixedly connected to the outer annular plate, a plurality of radial connecting rods connecting the inner annular plate and the outer annular plate, and a plurality of side protrusions fixedly connected to the end circular plates, wherein the side protrusions have mounting through holes; The motor end cover also includes a locking portion, the locking portion has a rotating sleeve and an end baffle fixedly connected to the rotating sleeve, the end baffle has a through hole portion, the inner annular plate has an external thread, and the rotating sleeve has an internal thread matching the external thread; The first inner arc-shaped flange has a first thread on the inner side thereof that matches the outer thread, the second inner arc-shaped flange has a second thread on the inner side thereof that matches the outer thread, and the third inner arc-shaped flange has a third thread on the inner side thereof that matches the outer thread; the first outer arc-shaped flange has a first arc-shaped groove, and the first connecting spring is connected between the first arc-shaped grooves of the two first half baffles; the second outer arc-shaped flange has a second arc-shaped groove, and the second connecting spring is connected between the second arc-shaped grooves of the two second half baffles; the third outer arc-shaped flange has a third arc-shaped groove, and the third connecting spring is connected between the third arc-shaped grooves of the two third half baffles; The motor end cover also includes a positioning unit, the first extension plate, the second extension plate and the third extension plate are all arc plates, the outer diameter of the first extension plate, the outer diameter of the first outer arc-shaped flange and the inner diameter of the outer ring plate are equal; the outer diameter of the second extension plate, the outer diameter of the second outer arc-shaped flange and the inner diameter of the first extension plate are equal; the outer diameter of the third extension plate, the outer diameter of the third outer arc-shaped flange and the inner diameter of the second extension plate are equal; a first limit block is fixed at the end of the second extension plate, a second limit block is fixed at the end of the third extension plate, the first extension plate has a first limit hole, and the first limit block has a second limit hole, and the second limit block has a third limit hole; the positioning unit includes a first plug rod, a second plug rod, an arc-shaped connecting rod connecting the first plug rod and the second plug rod, and a movable plug rod, the second plug rod has a plug hole, the arc-shaped connecting rod has a through hole connected to the plug hole, the movable plug rod is connected to a plug hole plug rod that can be inserted into the plug hole, and the plug hole plug rod is connected to a threading rope that can pass through the through hole; the end of the first plug rod is located in one of the first limit holes, one end of the movable plug rod is located in the other first limit hole, and the other end is located in the second limit hole; elastic rubber sleeves are fixed to the outside of the first plug rod and the movable plug rod.

2. The motor end cover according to claim 1, characterized in that: The first ventilation holes, the second ventilation holes and the third ventilation holes are all circular holes with diameters decreasing successively; the first ventilation holes, the second ventilation holes and the third ventilation holes are equal in number and correspond one to one, and the axes of the corresponding first ventilation holes, the second ventilation holes and the third ventilation holes are collinear.

3. A high-efficiency heat dissipation motor, characterized in that: It includes a shell, a rotating shaft, a stator installed in the shell, a rotor installed on the rotating shaft, a rotor unit installed on the rotating shaft and the motor end cover according to any one of claims 1 to 2, the shell includes a surrounding shell and an end shell fixedly connected to the surrounding shell, the end shell has a plurality of air outlets, a first bearing is installed on the end cover body, a second bearing is installed on the end shell, and the first bearing and the second bearing are both connected to the rotating shaft.

4. The high-efficiency heat dissipation motor according to claim 3, characterized in that: The blade unit includes a rotor installed on the rotating shaft and a plurality of blades installed on the rotor at equal intervals in a ring shape; the surrounding shell is in the shape of an annular cylinder, and the outer circumferential surface of the surrounding shell has a plurality of strip-shaped protrusions; the end shell has a bearing mounting hole for mounting a second bearing; the first bearing is mounted on the inner annular plate; the surrounding shell has a threaded hole, and the end cover body and the surrounding shell are fixed by bolts.

5. The high-efficiency heat dissipation motor according to claim 4, characterized in that: The number of the side protrusions is equal to the number of the threaded holes, and the bolts pass through the mounting through holes and cooperate with the threaded holes to fix the motor end cover and the housing; the surrounding shell is provided with a plurality of groove portions, and the number of the groove portions is equal to the number of the side protrusions, and each side protrusion is accommodated in one of the groove portions.

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