Moisture-proof sealing structure of motor

Abstract

The utility model provides a motor moisture-proof sealing structure, and belongs to the technical field of motors. The motor damp-proof sealing structure comprises a motor shell assembly and a sealing assembly, the motor shell assembly comprises a shell, an end cover, a rotating shaft and a bearing, the end cover is installed at the end of the shell, the rotating shaft rotationally penetrates through the end cover, and the sealing assembly comprises a first sealing ring, a pressing ring, a second sealing ring, a mask and a flow guide ring. The first sealing ring is arranged between the rotating shaft and the end cover, the shell, the end cover, the rotating shaft, the bearing, the first sealing ring, the pressing ring, the second sealing ring, the mask and the flow guide ring are arranged, the pressing ring is used for pressing the first sealing ring, and therefore the first sealing ring keeps the high sealing performance of the rotating shaft and the end cover; meanwhile, the second sealing ring further improves the sealing performance of the pressing ring and the rotating shaft, the pressing ring is fixed in the mode that the mask is fixed to the outer side of the end cover, the mask and the flow guide ring are matched to guide the flow direction of water, and water is prevented from flowing to the rotating shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric machines, in particular, to a moisture-proof sealing structure of an electric machine. BACKGROUND

[0002] The electric machine, commonly known as motor, refers to an electromagnetic device for realizing electric energy conversion or transmission according to electromagnetic induction law. Its main function is to generate driving torque as a power source for electric appliances or various machines. Electric machines are divided into DC motors, AC motors and the like. Electric machines are needed in various industries, such as electric vehicle industry and petroleum industry. In the assembly structure of the electric machine, the sealing property directly affects the service life.

[0003] Most of the electric machine housings use sealing gaskets for sealing operation at the installation interface. However, the single sealing gasket has limited effect, and the external water vapor can easily enter the housing from the output shaft and the housing installation port of the electric machine, affecting the service life of the electric machine, and some external water often splashes onto the end cover and spreads to the rotating shaft. CONTENT OF THE INVENTION

[0004] In order to make up for the above shortcomings, the present application provides a moisture-proof sealing structure of an electric machine, aiming at improving the problems in the above background technology.

[0005] The moisture-proof sealing structure of the electric machine provided by the present application comprises an electric machine shell assembly and a sealing assembly.

[0006] The electric machine shell assembly comprises a housing, an end cover, a rotating shaft and a bearing. The end cover is installed at the end of the housing. The rotating shaft penetrates the end cover and rotates. The bearing is sleeved on the surface of the rotating shaft and located inside the end cover.

[0007] The sealing assembly comprises a first sealing ring, a pressure ring, a second sealing ring, a mask and a flow guide ring. The first sealing ring is arranged between the rotating shaft and the end cover. The pressure ring is sleeved on the surface of the bearing. The second sealing ring is located between the rotating shaft and the pressure ring. The mask is fixedly connected to the pressure ring, and the mask is fixedly covered on the outside of the end cover. The flow guide ring is arranged at the end of the pressure ring.

[0008] In a specific embodiment, the housing and the end cover are both fixedly connected with a connecting block. The connecting block is threadedly connected with a connecting bolt.

[0009] In the above implementation process, the connecting bolt is screwed into the connecting block after the end cover and the housing end are butted by arranging the connecting block and the connecting bolt.

[0010] In a specific embodiment, the housing and the end cover are both provided with a groove and a gasket.

[0011] In the implementation process, the recess and the gasket are arranged to improve the sealing performance of the connection between the shell and the end cover.

[0012] In a specific embodiment, the inner side of the end cover is provided with a positioning groove matched with the bearing.

[0013] In the implementation process, the positioning groove is arranged to match the installation and positioning of the bearing.

[0014] In a specific embodiment, the pressure ring, the face shield and the flow guide ring are integrally formed, and the flow guide ring is provided with an annular groove.

[0015] In a specific embodiment, the outer side of the face shield is provided with a plurality of flow guide tooth plates, which are uniformly spaced and arranged towards the flow guide ring.

[0016] In the implementation process, the plurality of uniformly spaced flow guide tooth plates are arranged to guide the water flow to the flow guide ring.

[0017] In a specific embodiment, the face shield is provided with a fixing bolt, which is threadedly connected to the end cover.

[0018] In the implementation process, the fixing bolt is arranged to connect the face shield and the end cover.

[0019] In a specific embodiment, the outer side of the shell is provided with a plurality of heat dissipation protrusions.

[0020] In the implementation process, the heat dissipation protrusions are arranged to dissipate heat from the motor.

[0021] Beneficial effects: The motor moisture-proof sealing structure is provided, which comprises a shell, an end cover, a rotating shaft, a bearing, a first sealing ring, a pressure ring, a second sealing ring, a face shield and a flow guide ring. The pressure ring is arranged to press the first sealing ring, so that the first sealing ring maintains high sealing performance of the rotating shaft and the end cover. The second sealing ring further improves the sealing performance of the pressure ring and the rotating shaft. The face shield is arranged to fix the pressure ring to the outer side of the end cover. The face shield and the flow guide ring cooperate to guide the flow direction of the water flow, so as to avoid the water flow to the rotating shaft. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0023] Figure 1is a structural schematic diagram of a motor moisture-proof sealing structure provided by the embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of a motor shell assembly provided by the embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of an enlarged structure of A provided by the embodiment of the present application;

[0026] Figure 4 is a structural schematic diagram of a mask provided by the embodiment of the present application.

[0027] In the figure: 100-motor shell assembly; 110-outer shell; 111-heat dissipation protrusion; 120-end cover; 130-rotating shaft; 150-bearing; 160-connection block; 170-connection bolt; 180-gasket; 200-sealing assembly; 210-first sealing ring; 220-press ring; 230-second sealing ring; 250-mask; 260-flow guide ring; 270-flow guide tooth plate; 280-fixing bolt. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0029] Please refer to Figures 1-4 The present application provides a motor moisture-proof sealing structure, which comprises a motor shell assembly 100 and a sealing assembly 200.

[0030] Please refer to Figure 1 , 2 and 3, the motor shell assembly 100 comprises an outer shell 110, an end cover 120, a rotating shaft 130 and a bearing 150. The end cover 120 is installed at the end of the outer shell 110. The rotating shaft 130 is rotatably penetrated through the end cover 120. The bearing 150 is sleeved on the surface of the rotating shaft 130 and located inside the end cover 120.

[0031] The outer shell 110 and the end cover 120 are both fixedly connected with a connection block 160 outside. The connection block 160 is threadedly penetrated with a connection bolt 170. After the end cover 120 and the end of the outer shell 110 are butted by the cooperation of the connection block 160 and the connection bolt 170, the connection bolt 170 is threadedly screwed into the connection block 160 to be connected.

[0032] In the embodiment, the outer shell 110 and the end cover 120 are both provided with grooves and gaskets 180. The grooves and the gaskets 180 are used to improve the sealing performance of the connection between the outer shell 110 and the end cover 120.

[0033] Specifically, the inner side of the end cover 120 is provided with a positioning groove matched with the bearing 150. The positioning groove is used to match the installation and positioning of the bearing 150.

[0034] In a specific embodiment, the outer side of the shell 110 is provided with a plurality of heat dissipation protrusions 111. The heat dissipation protrusions 111 are used to dissipate heat from the motor.

[0035] Please refer to Figure 1 、 2 , 3 and 4, the sealing assembly 200 comprises a first sealing ring 210, a pressing ring 220, a second sealing ring 230, a face shield 250 and a flow guide ring 260. The first sealing ring 210 is arranged between the rotating shaft 130 and the end cover 120. The pressing ring 220 is sleeved on the surface of the bearing 150. The second sealing ring 230 is located between the rotating shaft 130 and the pressing ring 220. The face shield 250 is fixedly connected to the pressing ring 220, and the face shield 250 is fixedly covered on the outer side of the end cover 120. The flow guide ring 260 is arranged at the end of the pressing ring 220.

[0036] It should be noted that the pressing ring 220, the face shield 250 and the flow guide ring 260 are integrally formed, and the flow guide ring 260 is provided with an annular groove. The outer side of the face shield 250 is provided with a plurality of flow guide tooth plates 270, which are uniformly and spacedly arranged and face the flow guide ring 260. The plurality of uniformly and spacedly arranged flow guide tooth plates 270 are beneficial to guiding the water flow to the flow guide ring 260.

[0037] The face shield 250 is provided with a fixing bolt 280, which is threadedly connected to the end cover 120. The fixing bolt 280 is used to connect the face shield 250 and the end cover 120.

[0038] The working principle of the motor moisture-proof sealing structure is as follows. During installation, the bearing 150 is sleeved on the rotating shaft 130, the end cover 120 is covered and the connecting bolt 170 is tightened, the connecting bolt 170 is threadedly penetrated and screwed into the connecting block 160 to connect the end cover 120 and the shell 110, the first sealing ring 210 is installed between the end cover 120 and the rotating shaft 130, the second sealing ring 230 is first installed in the pressing ring 220 to improve the sealing performance, the pressing ring 220 is sleeved on the rotating shaft 130, the face shield 250 is connected to the end cover 120 by the fixing bolt 280, at this time, the pressing ring 220 tightly presses the first sealing ring 210, so that the first sealing ring 210 maintains the high sealing performance of the rotating shaft 130 and the end cover 120, the plurality of uniformly and spacedly arranged flow guide tooth plates 270 on the face shield 250 guide the water flow to the flow guide ring 260, which avoids the rainwater or other external water from flowing to the rotating shaft 130, and effectively guarantees the service life of the motor.

[0039] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference herein to any prior art is to be taken as an admission that the application is not entitled to antedate such prior art by virtue of prior application. No reference to any prior art in this specification is intended to be, nor should it be taken as, an acknowledgement or any form of suggestion that such prior art is accepted as relevant prior art against the present application. Any citation of any prior art in this specification is solely provided on the basis of relevance to the disclosure of the application.

Claims

1. A moisture-proof and sealing structure for motors, characterized in that, include A motor housing assembly (100) includes a housing (110), an end cap (120), a rotating shaft (130), and a bearing (150). The end cap (120) is installed at the end of the housing (110), the rotating shaft (130) rotates through the end cap (120), and the bearing (150) is sleeved on the surface of the rotating shaft (130) and located inside the end cap (120). A sealing assembly (200) includes a first sealing ring (210), a pressure ring (220), a second sealing ring (230), a face shield (250), and a flow guide ring (260). The first sealing ring (210) is disposed between the rotating shaft (130) and the end cap (120). The pressure ring (220) is sleeved on the surface of the bearing (150). The second sealing ring (230) is located between the rotating shaft (130) and the pressure ring (220). The face shield (250) is fixedly connected to the pressure ring (220) and is fixedly covered on the outside of the end cap (120). The flow guide ring (260) is disposed at the end of the pressure ring (220).

2. The motor moisture-proof sealing structure according to claim 1, characterized in that, Both the outer shell (110) and the end cap (120) are fixedly connected to a connecting block (160), and the connecting block (160) is threaded through with a connecting bolt (170).

3. The motor moisture-proof sealing structure according to claim 1, characterized in that, Both the outer shell (110) and the end cap (120) have grooves and are provided with gaskets (180).

4. The motor moisture-proof sealing structure according to claim 1, characterized in that, The end cap (120) has a positioning groove on its inner side and is adapted to the bearing (150).

5. The motor moisture-proof sealing structure according to claim 1, characterized in that, The pressure ring (220), the face mask (250) and the flow guide ring (260) are integrally molded, and the flow guide ring (260) has an annular groove.

6. The motor moisture-proof sealing structure according to claim 1, characterized in that, The mask (250) has a plurality of guide teeth (270) on its outer side, and the plurality of guide teeth (270) are evenly spaced and face the guide ring (260).

7. The motor moisture-proof sealing structure according to claim 1, characterized in that, The mask (250) is provided with a fixing bolt (280) through it, and the fixing bolt (280) is threaded to the end cap (120).

8. The motor moisture-proof sealing structure according to claim 1, characterized in that, The outer side of the outer casing (110) is provided with multiple heat dissipation protrusions (111).

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