Motor end cover with moisture-proof and heat dissipation state switching function

Abstract

The application discloses a motor end cover with moisture-proof and heat dissipation state switching functions, which comprises a motor shell, an inner end cover installed on the motor shell and three outer end covers installed on the inner end cover. The outer end cover is provided with a plurality of fan-shaped structures and annular heat dissipation ribs which are distributed at equal intervals. Adjacent two heat dissipation ribs form fan-shaped heat dissipation holes. The central angle of the heat dissipation rib is half of the central angle of the heat dissipation hole. The motor end cover can balance the moisture-proof and heat dissipation functions of the motor by adjusting the coincidence degree of the two adjusting covers, and is suitable for the motor which needs to be moved to different occasions. The cooperation of the semispherical protrusion and the semispherical groove and the abutting unit can make the first adjusting cover, the second adjusting cover and the outer fixed cover be pressed together, so that the displacement of the first adjusting cover and the second adjusting cover is avoided.

Description

Technical Field

[0001] This utility model relates to the field of motor end caps, and more specifically, to a motor end cap with a function of switching between moisture-proof and heat dissipation states. Background Technology

[0002] Motor end covers are protective covers installed at both ends of the motor housing and are a key component of the motor structure. They protect the precision components inside the motor, such as the rotor, stator, coils, and bearings, and are crucial for the normal operation, protective performance, and lifespan of the motor.

[0003] Existing motor end covers either prioritize moisture protection or heat dissipation, making it difficult to address both simultaneously. For example, some motor end covers employ a completely sealed design, which, while preventing moisture from entering the motor and protecting its components from moisture corrosion, severely hinders heat dissipation. Motors generate significant heat during operation; if this heat cannot be dissipated promptly, it can lead to excessively high internal temperatures, reducing the motor's lifespan and potentially causing malfunctions. Some motors need to be moved to different environments, where their moisture protection and heat dissipation requirements vary. For instance, in the humid environment of underground mines, motors require stronger moisture protection; while in high-temperature outdoor environments, they need better heat dissipation performance. However, existing motor end covers cannot flexibly adjust the degree of moisture protection and heat dissipation according to changes in the actual operating environment; they can only maintain a fixed state, failing to meet the diverse needs of motors in different situations. Utility Model Content

[0004] The present invention aims to overcome the defects of the prior art and provide a motor end cover with moisture-proof and heat dissipation switching functions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a motor end cover, comprising a motor housing, an inner end cover mounted on the motor housing, and three outer end covers mounted on the inner end cover. The outer end covers have multiple fan-shaped structures with equally spaced, annularly distributed heat dissipation ribs. Fan-shaped heat dissipation holes are formed between adjacent heat dissipation ribs. The central angle of each heat dissipation rib is half the central angle of the heat dissipation hole. The three outer end covers are, in sequence, a first adjusting cover, a second adjusting cover, and an outer fixing cover. The inner end cover includes an inner ring portion, an outer ring portion, a connecting rib connecting the inner ring portion and the outer ring portion, and a fixing rib. The ring has an inner boss and an outer boss fixed to the outer ring. The inner boss passes through the first adjusting cover, the second adjusting cover, and the outer fixing cover in sequence. Both the inner boss and the outer boss are fixedly connected to the outer fixing cover. The first adjusting cover is provided with a first adjusting handle, and the second adjusting cover is provided with a second adjusting handle. The inner end cover has an adjusting through hole that allows the first and second adjusting handles to pass through. The inner end cover is provided with a clamping unit. When there is no external force, the clamping unit clamps the first adjusting cover, the first adjusting cover clamps the second adjusting cover, and the second adjusting cover clamps the outer fixing cover.

[0006] Furthermore, the clamping unit includes an annular support spring plate and an annular base plate fixed to the back of the inner ring portion. The inner boss passes through the support spring plate, and a bolt is provided at the base plate. The base plate has a first through hole, and the inner ring portion has a second through hole. The end of the shank of the bolt has an external thread, and the support spring plate has a threaded hole that mates with the external thread. The shank of the bolt passes through the first through hole and the second through hole in sequence and then connects to the threaded hole. A support spring through which the shank of the bolt passes is provided between the support spring plate and the inner ring portion, and the support spring plate can clamp against the first adjusting cover.

[0007] Therefore, in the absence of external force, the support spring plate presses the first and second adjusting covers and the outer fixed cover together, thus preventing the first and second adjusting covers from sliding accidentally. The support spring is sleeved on the shank of the bolt, thus acting as a guide rod.

[0008] Furthermore, the inner ring portion is fixedly connected to the base plate by studs and nuts. The inner ring portion has multiple studs, and the base plate has a third through hole that mates with the studs. The studs pass through the third through hole and are fixedly connected to the nuts.

[0009] This ensures a stable connection between the base plate and the inner ring.

[0010] Furthermore, the heat dissipation rib at the first adjustment cover is the first heat dissipation rib, the heat dissipation rib at the second adjustment cover is the second heat dissipation rib, and the heat dissipation rib at the outer fixed cover is the third heat dissipation rib. The motor end cover can be in a heat dissipation state and a moisture-proof state. In the heat dissipation state, the first heat dissipation rib, the second heat dissipation rib, and the third heat dissipation rib overlap. In the moisture-proof state, the first heat dissipation rib and the second heat dissipation rib block the heat dissipation hole between two adjacent third heat dissipation ribs.

[0011] By adjusting the overlap of the two adjustment covers, a balance can be achieved between the motor's moisture protection and heat dissipation functions.

[0012] Furthermore, the first adjusting cover has multiple hemispherical protrusions distributed in a ring at equal intervals, and the back of the second adjusting cover has multiple sets of hemispherical grooves that mate with the hemispherical protrusions. The number of sets of hemispherical grooves is the same as the number of hemispherical protrusions, and each set has three hemispherical grooves that are distributed in a ring at equal intervals. The second adjusting cover has multiple hemispherical protrusions distributed in a ring at equal intervals, and the back of the outer fixing cover has multiple sets of hemispherical grooves that mate with the hemispherical protrusions. The number of sets of hemispherical grooves is the same as the number of hemispherical protrusions, and each set has three hemispherical grooves that are distributed in a ring at equal intervals.

[0013] Furthermore, in the heat dissipation state, the first hemispherical protrusion is embedded in the middle of a set of corresponding first hemispherical grooves, and the second hemispherical protrusion is embedded in the middle of a set of corresponding second hemispherical grooves; in the moisture-proof state, the first hemispherical protrusion is embedded in one of the two side first hemispherical grooves of a set of corresponding first hemispherical grooves, and the second hemispherical protrusion is embedded in one of the two side second hemispherical grooves of a set of corresponding second hemispherical grooves.

[0014] The first hemispherical protrusion engages with the first hemispherical groove, and the second hemispherical protrusion engages with the second hemispherical groove, thereby positioning the first and second adjustment covers.

[0015] Furthermore, a side baffle is provided at the edge of the first heat dissipation fin, and in the moisture-proof state, the side baffle covers the gap between the first heat dissipation fin and the third heat dissipation fin.

[0016] This further enhances the moisture-proof performance.

[0017] Furthermore, the inner boss has multiple first mounting grooves, each containing a first mounting hole; the outer boss has multiple second mounting grooves, each containing a second mounting hole; the outer fixing cover has multiple first mounting protrusions that mate with the first mounting grooves and multiple second mounting protrusions that mate with the second mounting grooves; the first mounting protrusions have third mounting holes; and the second mounting protrusions have fourth mounting holes.

[0018] Furthermore, the first adjusting cover has a first through hole through which the inner boss passes, the second adjusting cover has a second through hole through which the inner boss passes, and the outer end cover has a third through hole through which the inner boss passes.

[0019] This makes it easy to fix the outer fixing cover to the inner end cover.

[0020] Furthermore, the inner end cover is fixedly connected to the motor housing. The inner end cover has multiple fifth mounting holes, and the motor housing has multiple sixth mounting holes. The number of fifth mounting holes and sixth mounting holes are the same and they correspond one-to-one.

[0021] This facilitates the fixed connection between the inner end cover and the motor housing.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. The motor end cover of this application achieves a balance between the motor's moisture protection and heat dissipation functions by adjusting the overlap of the two adjustment covers, and is suitable for motors that need to be moved to different occasions.

[0024] 2. The motor end cover of this application allows for easy switching between two states, thus facilitating quick and convenient adjustment.

[0025] 3. The motor end cover of this application, through the cooperation of the hemispherical protrusion and the hemispherical groove, and the pressing unit, presses the first and second adjustment covers and the outer fixed cover together, thereby preventing the first adjustment cover and the second adjustment cover from shifting. Attached Figure Description

[0026] Figure 1 A first-view schematic diagram of the separation of the motor end cover component;

[0027] Figure 2 This is a magnified view of region A;

[0028] Figure 3 This is a magnified view of region B.

[0029] Figure 4 This is a magnified view of region C;

[0030] Figure 5 This is a magnified view of region D;

[0031] Figure 6 A second-view schematic diagram showing the separation of the motor end cover component;

[0032] Figure 7 This is a magnified view of region E.

[0033] Figure 8 This is a magnified view of region F;

[0034] Figure 9 This is a schematic diagram showing the heat dissipation state.

[0035] Figure 10 This is a magnified view of region G;

[0036] Figure 11 This is a schematic diagram showing the moisture-proof condition;

[0037] Figure 12 This is a magnified view of region H;

[0038] Figure 13 This is a schematic diagram showing the separation of the limiting unit and the inner end cover;

[0039] Figure 14 This is a magnified view of region I;

[0040] Figure 15 This is a magnified view of region J.

[0041] To more clearly illustrate the technical solution of this application, only a portion of the motor housing is shown in the figure.

[0042] Explanation of reference numerals in the attached drawings: Motor housing 1; Inner end cover 2; Inner ring 2.1; Second through hole 2.1.1; Outer ring 2.2; Connecting rib 2.3; Inner boss 2.4; First mounting groove 2.4.1; Outer boss 2.5; Second mounting groove 2.5.1; Adjustment through hole 2.6; Stud 2.7; Nut 2.8; First adjusting cover 3; First adjusting handle 3.1; First heat dissipation rib 3.2; First hemispherical protrusion 3.3; Side baffle 3.4; Second adjusting cover 4; Second adjusting handle 4.1; Second heat dissipation rib 4.2; First hemispherical groove 4.3; Second hemispherical protrusion 4.4; Outer fixing cover 5; Third heat dissipation rib 5.1; Second hemispherical groove 5.2; First mounting protrusion 5.3; Second mounting protrusion 5.4; Support spring 6.1; Base plate 6.2; First through hole 6.2.1; Bolt 6.3; Support spring 6.4. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] This utility model provides, for example Figure 1-15 The motor end cover shown has a function of switching between moisture-proof and heat dissipation modes. It includes a motor housing 1, an inner end cover 2 installed on the motor housing 1, and three outer end covers installed on the inner end cover 2. Each outer end cover has multiple fan-shaped structures with equally spaced, annularly distributed heat dissipation ribs. Fan-shaped heat dissipation holes are formed between adjacent heat dissipation ribs. The central angle of each heat dissipation rib is half the central angle of the heat dissipation hole. The three outer end covers are, in sequence, a first adjusting cover 3, a second adjusting cover 4, and an outer fixing cover 5. The inner end cover 2 includes an inner ring portion 2.1, an outer ring portion 2.2, a connecting rib 2.3 connecting the inner ring portion 2.1 and the outer ring portion 2.2, and an inner boss 2.4 fixed to the inner ring portion 2.1. The outer protrusion 2.5 is fixed to the outer ring 2.2. The inner protrusion 2.4 passes through the first adjusting cover 3, the second adjusting cover 4 and the outer fixing cover 5 in sequence. The inner protrusion 2.4 and the outer protrusion 2.5 are both fixedly connected to the outer fixing cover 5. The first adjusting cover 3 is provided with a first adjusting handle 3.1 and the second adjusting cover 4 is provided with a second adjusting handle 4.1. The inner end cover 2 has an adjusting through hole 2.6 that allows the first and second adjusting handles to pass through. The inner end cover 2 is provided with a pressing unit. When there is no external force, the pressing unit presses against the first adjusting cover 3, the first adjusting cover 3 presses against the second adjusting cover 4, and the second adjusting cover 4 presses against the outer fixing cover 5.

[0045] The clamping unit includes an annular support spring plate 6.1 and an annular base plate 6.2 fixed to the back of the inner ring portion 2.1. The inner boss 2.4 passes through the support spring plate 6.1. A bolt 6.3 is provided at the base plate 6.2. The base plate 6.2 has a first through hole 6.2.1, and the inner ring portion 2.1 has a second through hole 2.1.1. The end of the shank of the bolt 6.3 has an external thread. The support spring plate 6.1 has a threaded hole that mates with the external thread. The shank of the bolt 6.3 passes through the first through hole 6.2.1 in sequence. The second through hole 2.1.1 is connected to the threaded hole. A support spring 6.4, through which the rod of the bolt 6.3 passes, is provided between the support spring plate 6.1 and the inner ring 2.1. The support spring plate 6.1 can press against the first adjusting cover 3. The inner ring 2.1 and the base plate 6.2 are fixedly connected by studs 2.7 and nuts 2.8. The inner ring 2.1 has a plurality of studs 2.7. The base plate 6.2 has a third through hole that mates with the studs 2.7. The studs 2.7 pass through the third through hole and are fixedly connected to the nuts 2.8.

[0046] The heat dissipation rib at the first adjusting cover 3 is the first heat dissipation rib 3.2, the heat dissipation rib at the second adjusting cover 4 is the second heat dissipation rib 4.2, and the heat dissipation rib at the outer fixing cover 5 is the third heat dissipation rib 5.1. The motor end cover can be in a heat dissipation state and a moisture-proof state. In the heat dissipation state, the first heat dissipation rib 3.2, the second heat dissipation rib 4.2, and the third heat dissipation rib 5.1 overlap. In the moisture-proof state, the first heat dissipation rib 3.2 and the second heat dissipation rib 4.2 block the heat dissipation hole between two adjacent third heat dissipation ribs 5.1. The first adjusting cover 3 has multiple hemispherical protrusions 3.3 distributed in a ring at equal intervals. The back of the second adjusting cover 4 has multiple sets of hemispherical grooves 4.3 that mate with the hemispherical protrusions 3.3. The number of sets of hemispherical grooves 4.3 is the same as the number of hemispherical protrusions 3.3, and each set has three hemispherical grooves 4.3, which are distributed in a ring at equal intervals. The second adjusting cover 4 has multiple hemispherical protrusions 4.4 distributed in a ring at equal intervals. The back of the outer fixing cover 5 has multiple sets of hemispherical grooves 5.2 that mate with the hemispherical protrusions 4.4. The number of sets of hemispherical grooves 5.2 is the same as the number of hemispherical protrusions 4.4, and each set has three hemispherical grooves 5.2, which are distributed in a ring at equal intervals. In the heat dissipation state, the first hemispherical protrusion 3.3 is embedded in the middle of a set of first hemispherical grooves 4.3, and the second hemispherical protrusion 4.4 is embedded in the middle of a set of second hemispherical grooves 5.2. In the moisture-proof state, the first hemispherical protrusion 3.3 is embedded in one of the two side first hemispherical grooves 4.3, and the second hemispherical protrusion 4.4 is embedded in one of the two side second hemispherical grooves 5.2. A side baffle 3.4 is provided at the edge of the first heat dissipation rib 3.2. In the moisture-proof state, the side baffle 3.4 covers the gap between the first heat dissipation rib 3.2 and the third heat dissipation rib 5.1.

[0047] The inner boss 2.4 has multiple first mounting grooves 2.4.1, each containing a first mounting hole. The outer boss 2.5 has multiple second mounting grooves 2.5.1, each containing a second mounting hole. The outer fixed cover 5 has multiple first mounting protrusions 5.3 that mate with the first mounting grooves 2.4.1 and multiple second mounting protrusions 5.4 that mate with the second mounting grooves 2.5.1. Each first mounting protrusion 5.3 has a third mounting hole, and each second mounting protrusion 5.4 has a fourth mounting hole. The inner end cover 2 is fixedly connected to the motor housing 1. The inner end cover 2 has multiple fifth mounting holes, and the motor housing 1 has multiple sixth mounting holes. The number of fifth and sixth mounting holes is the same, and they correspond one-to-one.

[0048] Working principle: The motor end cover of this application achieves a balance between moisture protection and heat dissipation by adjusting the overlap of two adjustment covers. It is suitable for motors that need to be moved to different locations. Depending on the temperature and humidity of the environment, the first and second adjustment covers are adjusted to achieve a balance between heat dissipation and moisture protection. Furthermore, supported by the support spring, the support spring plate presses the first and second adjustment covers and the outer fixed cover together. The hemispherical protrusion and hemispherical groove cooperate to play a positioning role, so that the first and second adjustment covers will not slide accidentally without external force.

[0049] Specifically, by adjusting the first adjusting handle and the second adjusting handle, the heat dissipation ribs of the first adjusting cover, the second adjusting cover, and the outer fixing cover are completely aligned. The first hemispherical protrusion is embedded in the middle hemispherical groove of a set of corresponding first hemispherical grooves, and the second hemispherical protrusion is embedded in the middle hemispherical groove of a set of corresponding second hemispherical grooves, thus maximizing the opening of the heat dissipation holes and enabling the motor end cover of this application to be in a heat dissipation state. Adjusting the first and second adjusting covers ensures that the heat dissipation ribs of the first and second adjusting covers completely block the heat dissipation holes between the heat dissipation ribs of the outer fixing cover. The first hemispherical protrusion is embedded in one of the two side hemispherical grooves of a set of corresponding first hemispherical grooves, and the second hemispherical protrusion is embedded in one of the two side hemispherical grooves of a set of corresponding second hemispherical grooves. Simultaneously, the side baffle blocks the gap between the first and third heat dissipation ribs, thus enabling the motor end cover of this application to be in a moisture-proof state.

[0050] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A motor end cover with moisture-proof and heat dissipation switching functions, characterized in that, The device includes a motor housing, an inner end cover mounted on the motor housing, and three outer end covers mounted on the inner end cover. Each outer end cover has multiple fan-shaped cooling ribs distributed in a ring at equal intervals. Fan-shaped ventilation holes are formed between adjacent cooling ribs. The central angle of each cooling rib is half the central angle of the ventilation hole. The three outer end covers are, in sequence, a first adjusting cover, a second adjusting cover, and an outer fixing cover. The inner end cover includes an inner ring portion, an outer ring portion, a connecting rib connecting the inner and outer ring portions, an inner boss fixed to the inner ring portion, and a fixing point to the outer ring portion. An outer protrusion and an inner protrusion pass sequentially through a first adjusting cover, a second adjusting cover, and an outer fixing cover. Both the inner and outer protrusions are fixedly connected to the outer fixing cover. A first adjusting handle is provided at the first adjusting cover, and a second adjusting handle is provided at the second adjusting cover. An adjusting through hole is provided at the inner end cover to allow the first and second adjusting handles to pass through. A clamping unit is provided at the inner end cover. When there is no external force, the clamping unit clamps against the first adjusting cover, the first adjusting cover clamps against the second adjusting cover, and the second adjusting cover clamps against the outer fixing cover.

2. The motor end cover with moisture-proof and heat dissipation state switching function according to claim 1, characterized in that, The clamping unit includes an annular support spring plate and an annular base plate fixed to the back of the inner ring portion. The inner boss passes through the support spring plate. A bolt is provided at the base plate. The base plate has a first through hole, and the inner ring portion has a second through hole. The end of the bolt shank has an external thread. The support spring plate has a threaded hole that mates with the external thread. The bolt shank passes through the first through hole and the second through hole in sequence and then connects to the threaded hole. A support spring is provided between the support spring plate and the inner ring portion, through which the bolt shank passes. The support spring plate can clamp against the first adjusting cover. The inner ring portion and the base plate are fixedly connected by studs and nuts. The inner ring portion has multiple studs. The base plate has a third through hole that mates with the studs. The studs pass through the third through hole and are fixedly connected to the nut.

3. The motor end cover with moisture-proof and heat dissipation state switching function according to claim 2, characterized in that, The heat dissipation ribs at the first adjustment cover are the first heat dissipation ribs, the heat dissipation ribs at the second adjustment cover are the second heat dissipation ribs, and the heat dissipation ribs at the outer fixed cover are the third heat dissipation ribs. The motor end cover can be in a heat dissipation state and a moisture-proof state. In the heat dissipation state, the first heat dissipation rib, the second heat dissipation rib, and the third heat dissipation rib overlap. In the moisture-proof state, the first heat dissipation rib and the second heat dissipation rib block the heat dissipation holes between two adjacent third heat dissipation ribs.

4. The motor end cover with moisture-proof and heat dissipation state switching function according to claim 3, characterized in that, The first adjusting cover has multiple hemispherical protrusions arranged in a ring at equal intervals. The back of the second adjusting cover has multiple sets of hemispherical grooves that mate with the hemispherical protrusions. The number of sets of hemispherical grooves is the same as the number of hemispherical protrusions, and each set has three hemispherical grooves arranged in a ring at equal intervals. The second adjusting cover also has multiple hemispherical protrusions arranged in a ring at equal intervals. The back of the outer fixing cover has multiple sets of hemispherical grooves that mate with the hemispherical protrusions. The number of sets of hemispherical grooves is the same as the number of hemispherical protrusions. Each group has three second hemispherical grooves, which are distributed in a ring at equal intervals. In the heat dissipation state, the first hemispherical protrusion is embedded in the middle first hemispherical groove of the corresponding group, and the second hemispherical protrusion is embedded in the middle second hemispherical groove of the corresponding group. In the moisture-proof state, the first hemispherical protrusion is embedded in one of the two side first hemispherical grooves of the corresponding group, and the second hemispherical protrusion is embedded in one of the two side second hemispherical grooves of the corresponding group.

5. The motor end cover with moisture-proof and heat dissipation state switching function according to claim 3, characterized in that, A side baffle is provided at the edge of the first heat dissipation rib. In the moisture-proof state, the side baffle covers the gap between the first heat dissipation rib and the third heat dissipation rib.

6. The motor end cover with moisture-proof and heat dissipation state switching function according to claim 1, characterized in that, The inner boss has multiple first mounting grooves, each containing a first mounting hole; the outer boss has multiple second mounting grooves, each containing a second mounting hole; the outer fixing cover has multiple first mounting protrusions that mate with the first mounting grooves and multiple second mounting protrusions that mate with the second mounting grooves; the first mounting protrusions have third mounting holes; and the second mounting protrusions have fourth mounting holes.

7. The motor end cover with moisture-proof and heat dissipation state switching function according to claim 1, characterized in that, The inner end cover is fixedly connected to the motor housing. The inner end cover has multiple fifth mounting holes, and the motor housing has multiple sixth mounting holes. The number of fifth mounting holes and sixth mounting holes are the same and they correspond one-to-one.

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