Motor waterproof structure

Abstract

The utility model discloses a motor waterproof structure which comprises a motor body, the motor body is provided with a motor shell, an end cover and an output main shaft, the end cover is installed at the end portion of the motor shell in a sealing mode, the output main shaft is arranged in the motor shell and penetrates through one side of the end cover in an outward protruding mode, and a through hole is formed in one side of the end cover in a penetrating mode. A hollow annular sealing cover ring is connected into the through hole in a threaded mode, a lining, a framework oil seal and a waterproof bearing which are concentrically arranged are sequentially arranged on the inner side of the sealing cover ring, and the output main shaft is sequentially inserted into the waterproof bearing, the framework oil seal and the lining in a matched mode in a penetrating mode. The sealing cover ring is arranged between the output main shaft and the end cover in a matched mode so that the sealing cover ring can seal the output main shaft and the end cover. A waterproof bearing, a framework oil seal and a lining are integrally installed in the sealing cover ring, and the waterproof bearing, the framework oil seal and the lining are matched with the output main shaft so that multiple sealing protection between the sealing cover ring and the output main shaft can be achieved.

Description

Technical Field

[0001] The utility model particularly relates to a waterproof structure of a motor. Background Art

[0002] An electric motor, commonly known as a motor, is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. A motor, represented by the letter M in an electrical circuit, primarily generates driving torque, serving as a power source for electrical appliances and various machines. A generator, represented by the letter G in an electrical circuit, primarily converts mechanical energy into electrical energy.

[0003] However, the common waterproof structure for motor shafts on the market has a simple structure and an unreasonable design. The sealing performance of the motor main shaft is poor, and rainwater can easily enter the motor main shaft position, which fails to meet the higher sealing and waterproof level requirements, resulting in reduced insulation performance of the motor, causing bearings to rust, poor rotation, increased motor load current, and burnt motors, which directly affects the service life of the motor. Utility Model Content

[0004] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a waterproof structure for a motor.

[0005] A motor waterproof structure includes a motor body, the motor body having a motor housing, an end cover and an output main shaft, the end cover is sealed and installed at the end of the motor housing, the output main shaft is arranged in the motor housing and protrudes outward and is inserted into one side of the end cover, a through hole is penetrated through one side of the end cover, a hollow annular sealing cover ring is threadedly connected to the through hole, a concentrically arranged bushing, a skeleton oil seal and a waterproof bearing are sequentially arranged on the inner side of the sealing cover ring, and the output main shaft is sequentially inserted into the waterproof bearing, the skeleton oil seal and the bushing.

[0006] In one embodiment, the sealing cover ring has a flange protruding along the outer circumference, and a first circular flange is provided on one side of the end cover along the circumferential contour of the through hole. A cavity is formed between the flange and the first circular flange, and a locking component is provided in the cavity to lock the sealing cover ring from rotating relative to the end cover.

[0007] In one embodiment, a second annular flange is provided on the end cover outside the first annular flange, the second annular flange is concentrically arranged with the first annular flange, and the outer wall of the second annular flange is sealingly abutted with the inner wall of the flange.

[0008] In one embodiment, the outer side wall of the second annular flange is a first inclined surface inclined downward, and the inner side wall of the flange is a second inclined surface capable of sealingly abutting against the first inclined surface.

[0009] In one embodiment, the locking member includes a locking ring that is movably arranged in the cavity up and down, and an elastic member that abuts between the locking ring and the cavity so that the two can elastically move up and down relative to each other. A plurality of latch teeth are evenly distributed along the circumference on the lower side of the locking ring, and a plurality of tooth grooves that can engage with the latch teeth are evenly distributed along the circumference on one side of the end cover and are located in the cavity.

[0010] In one embodiment, the locking member further includes an unlocking cross bar, a through groove communicating with the cavity is penetrated on one side of the sealing cover ring, the cross section of the through groove is arranged in a stepped shape, the unlocking cross bar is movably arranged in the through groove, a third inclined surface is provided at one end of the unlocking cross bar, a groove is concave along the circumference on the outer peripheral side of the locking ring, and a fourth inclined surface is provided in the groove that can cooperate and abut with the third inclined surface.

[0011] In one embodiment, a first sealing gasket is provided between the bushing and the sealing cover ring.

[0012] In one embodiment, a second sealing gasket is provided between the second annular flange and the first annular flange.

[0013] In one embodiment, the bushing, the skeleton oil seal and the waterproof bearing are interference-fitted on the inner side of the sealing cover ring.

[0014] In summary, the present invention has the following beneficial effects compared to the prior art:

[0015] The utility model is provided between the output main shaft and the end cover through the sealing cover ring, so that the sealing cover ring seals the output main shaft and the end cover;

[0016] The sealing cover ring is integrated with a waterproof bearing, a skeleton oil seal and a bushing, which cooperate with the output main shaft to achieve multiple sealing protection between the sealing cover ring and the output main shaft.

[0017] Moreover, by removing the sealing cover ring, it is convenient to maintain and replace the waterproof bearing, the skeleton oil seal and the bushing, which solves the problem of the need to remove the entire motor housing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic cross-sectional view of a waterproof structure for a motor in one embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the assembly cross-sectional structure of the end cover and the sealing cover ring in one embodiment of the utility model;

[0020] Figure 3 In one embodiment of the present invention Figure 2 A magnified schematic diagram of point A;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the end cover in one embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of a sealing cover ring in one embodiment of the present utility model;

[0023] Figure 6 The figure is a schematic diagram of the assembly structure of the end cover and the sealing cover ring in one embodiment of the utility model. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 6 The embodiment of the utility model shown preferably provides a motor waterproof structure, including a motor body, the motor body having a motor housing 1, an end cover 2 and an output main shaft 3, the end cover 2 is sealed and installed at the end of the motor housing 1, the output main shaft 3 is arranged in the motor housing 1 and protrudes outward and is inserted into one side of the end cover 2, a through hole 4 is penetrated on one side of the end cover 2, a hollow ring-shaped sealing cover ring 5 is connected by a thread in the through hole 4, and a concentric bushing 6, a skeleton oil seal 7 and a waterproof bearing 8 are sequentially arranged on the inner side of the sealing cover ring 5, and the output main shaft 3 is sequentially inserted into the waterproof bearing 8, the skeleton oil seal 7 and the bushing 6.

[0026] Specifically, the sealing cover ring is arranged between the output main shaft and the end cover, so that the sealing cover ring seals the output main shaft and the end cover;

[0027] The sealing cover ring is integrated with a waterproof bearing, a skeleton oil seal and a bushing, which cooperate with the output main shaft to achieve multiple sealing protection between the sealing cover ring and the output main shaft.

[0028] Moreover, by removing the sealing cover ring, it is convenient to maintain and replace the waterproof bearing, the skeleton oil seal and the bushing, which solves the problem of the need to remove the entire motor housing in the prior art.

[0029] Furthermore, the sealing cover ring 5 has a flange 9 protruding along its outer circumference, and a first annular flange 10 is provided on one side of the end cap 2 along the circumferential contour of the through hole 4. A cavity 11 is formed between the flange 9 and the first annular flange 10. A locking member 12 is provided in the cavity 11 to prevent the sealing cover ring 5 from rotating relative to the end cap 2. Specifically, the locking member is used to achieve locking and fixation after the sealing cover ring and the end cap are threaded together, thereby effectively preventing the sealing cover ring from loosening due to vibration.

[0030] Furthermore, a second annular flange 13 is provided on the end cap 2, located outside the first annular flange 10. The second annular flange 13 is concentrically disposed with the first annular flange 10, and the outer wall of the second annular flange 13 is in sealing contact with the inner wall of the flange 9. Specifically, the second annular flange forms an upwardly arched protrusion, and when the second annular flange contacts the flange of the sealing cover ring, a first waterproof seal is achieved between the end cap and the sealing cover ring. Simultaneously, the end of the first annular flange contacts the inner wall of the sealing cover ring, thereby achieving a second waterproof seal between the end cap and the sealing cover ring.

[0031] Furthermore, the outer sidewall of the second annular flange 13 is a downwardly inclined first slope 14, and the inner sidewall of the flange 9 is a second slope 15 that can be sealed against the first slope 14. Specifically, by setting the first slope of the second annular flange to abut against the second slope of the flange, water leakage can be better avoided.

[0032] Further, if Figure 2 and Figure 3 As shown, the locking member 12 includes a locking ring 31 that is movably disposed up and down within the cavity 11, and an elastic member 32 that abuts between the locking ring 31 and the cavity 11, allowing the two to elastically move up and down relative to each other. The locking ring 31 has a plurality of latching teeth 33 evenly distributed along its circumference on its lower side, and a plurality of tooth grooves 34 that engage with the latching teeth 33 evenly distributed along its circumference on one side of the end cap 2 and located within the cavity 11. Specifically, a reinforcing rib is provided on the inner side of the sealing cover ring and located within the cavity, and a recessed portion that cooperates with the reinforcing rib is provided along its circumference, so that the locking ring can only move up and down relative to the sealing cover ring. The elastic member can be a spring, which abuts against the spring to achieve elastic movement of the locking ring relative to the cavity. When the sealing cover ring is installed on the end cap, the latching teeth of the locking ring engage with the tooth grooves in the end cap, thereby achieving relative locking between the sealing cover ring and the end cap.

[0033] Furthermore, the locking member 12 further includes an unlocking crossbar 35. A through-groove 36 communicating with the cavity 11 is formed through one side of the sealing cover ring 5. The through-groove 36 has a stepped cross section. The unlocking crossbar 35 is movably arranged in the through-groove 36. A third inclined surface 37 is provided at one end of the unlocking crossbar 35. A groove 39 is formed inwardly along the circumference of the outer circumference of the locking ring 31. A fourth inclined surface 40 is provided in the groove 39 to cooperate with and abut against the third inclined surface 37. Specifically, when the locking member needs to be unlocked, the user presses the unlocking crossbar to move the unlocking crossbar axially along the through-groove. The third inclined surface of the unlocking crossbar abuts against the fourth inclined surface of the locking ring. The locking ring is guided by the inclined surface to move relative to the sealing cover ring and compress the elastic force of the elastic member, so that the locking teeth of the locking ring are disengaged from the tooth grooves in the end cover, so that the sealing cover ring can be screwed and removed relative to the end cover.

[0034] Furthermore, a first sealing gasket (not shown) is provided between the bushing 6 and the sealing cover ring 5, thereby achieving a better sealing effect.

[0035] Furthermore, a second sealing gasket (not shown) is provided between the second annular flange 13 and the first annular flange 10, thereby achieving a better sealing effect.

[0036] Furthermore, the bushing 6 , the skeleton oil seal 7 and the waterproof bearing 8 are interference-fittedly arranged on the inner side of the sealing cover ring 5 .

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor waterproof structure, comprising a motor body, wherein the motor body comprises a motor housing (1), an end cover (2) and an output spindle (3), wherein the end cover (2) is sealed and mounted on the end of the motor housing (1), and the output spindle (3) is arranged in the motor housing (1) and protrudes outwardly and is inserted into one side of the end cover (2), and is characterized in that: A through hole (4) is provided on one side of the end cover (2); a hollow ring-shaped sealing cover ring (5) is connected to the inner thread of the through hole (4); a concentrically arranged bushing (6), a skeleton oil seal (7) and a waterproof bearing (8) are sequentially provided on the inner side of the sealing cover ring (5); and the output main shaft (3) is sequentially inserted into the waterproof bearing (8), the skeleton oil seal (7) and the bushing (6).

2. The motor waterproof structure according to claim 1, characterized in that: The sealing cover ring (5) has a flange (9) protruding along the outer circumference, and a first annular flange (10) is provided on one side of the end cover (2) along the circumferential contour of the through hole (4). A cavity (11) is formed between the flange (9) and the first annular flange (10), and a locking member (12) is provided in the cavity (11) for locking the sealing cover ring (5) from rotating relative to the end cover (2).

3. The motor waterproof structure according to claim 2, characterized in that: A second circular flange (13) is provided on the end cover (2) outside the first circular flange (10), the second circular flange (13) and the first circular flange (10) are arranged concentrically, and the outer wall of the second circular flange (13) is in sealing contact with the inner wall of the flange (9).

4. The motor waterproof structure according to claim 3, characterized in that: The outer side wall of the second annular flange (13) is a first inclined surface (14) that is inclined downward, and the inner side wall of the flange (9) is a second inclined surface (15) that can be in sealing contact with the first inclined surface (14).

5. The motor waterproof structure according to claim 2, characterized in that: The locking member (12) includes a locking ring (31) that is movably arranged in the cavity (11) and is capable of moving up and down, and an elastic member (32) that abuts between the locking ring (31) and the cavity (11) so that the two can move elastically in an upward and downward direction relative to each other. A plurality of latch teeth (33) are uniformly arranged along the circumference on the lower side of the locking ring (31), and a plurality of tooth grooves (34) that can mesh with the latch teeth (33) are uniformly arranged along the circumference on one side of the end cover (2) and are located in the cavity (11).

6. The motor waterproof structure according to claim 5, characterized in that: The locking member (12) further includes an unlocking cross bar (35), a through groove (36) communicating with the cavity (11) is passed through one side of the sealing cover ring (5), the through groove (36) having a stepped cross section, the unlocking cross bar (35) being movably arranged in the through groove (36), a third inclined surface (37) being provided at one end of the unlocking cross bar (35), a groove (39) being concave along the circumference of the outer circumference of the locking ring (31), and a fourth inclined surface (40) being provided in the groove (39) and being capable of cooperating with and abutting against the third inclined surface (37).

7. The motor waterproof structure according to claim 1, characterized in that: A first sealing gasket is provided between the bushing (6) and the sealing cover ring (5).

8. The motor waterproof structure according to claim 3, characterized in that: A second sealing gasket is provided between the second annular flange (13) and the first annular flange (10).

9. The motor waterproof structure according to claim 1, characterized in that: The bushing (6), the skeleton oil seal (7) and the waterproof bearing (8) are respectively arranged on the inner side of the sealing cover ring (5) in an interference fit.

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