A sealing structure of a motor housing

Abstract

The utility model relates to motor field especially relates to a sealing structure of motor casing, including the casing, the front end cover is installed at casing one side end, the upper and lower symmetry fixed snap ring is installed at the outer surface department of front end cover and casing junction, fixed snap ring is used for connecting casing and front end cover, the front end cover is connected with the connecting block through the rubber ring, the front end cover is located the cavity for installing casing and is seted up at the connecting block one side surface department, the utility model passes through the double sealing of recess cooperation rubber ring, cooperates the sealing rubber ring of both sides symmetry, forms the three -dimensional sealing barrier of many channels, the rubber bump in fixed snap ring continuously extrudes rubber ring, automatic compensation wear or deformation gap, ensures long -term sealing reliability, long service life, first locating piece and casing positioning groove, second locating piece and connecting block positioning groove, third locating piece and end cap positioning groove form three -level linkage lock, completely eliminate the risk of installation misplacement.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a sealing structure for a motor housing. Background Technology

[0002] The sealing performance of the motor housing and end cover directly affects the motor's dustproof, waterproof, and service life. Traditional sealing structures often use bolt fastening combined with a single-layer sealing ring, which has obvious defects. The sealing treatment at the connection between the traditional motor housing and end cover is poor, simply applying sealant or adding a sealing gasket at the connection. However, with long-term use, the sealant will fall off and the sealing gasket will wear down, resulting in poor sealing performance. This single sealing structure has a short service life. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sealing structure for motor housings.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sealing structure for an electric motor housing includes a housing, a front end cover installed at one end of the housing, and symmetrically installed retaining rings on the outer surface of the connection between the front end cover and the housing. The retaining rings are used to connect the housing and the front end cover. The front end cover is connected to a connecting block through a rubber ring. An insertion cavity is opened on one side surface of the front end cover located on the connecting block. The insertion cavity is used to install the housing.

[0006] In addition, a preferred structure is that mounting plates are provided on both sides of the fixing ring, and a rubber protrusion is provided in the middle of the inner wall of the fixing ring.

[0007] In addition, a preferred structure is that a plurality of first positioning blocks are evenly arranged on one side of the rubber protrusion on the inner wall of the fixing ring. The first positioning blocks are used to be installed on the housing. A plurality of second positioning blocks and third positioning blocks are evenly arranged in sequence on the other side of the rubber protrusion. The second positioning blocks and third positioning blocks are used to be installed on the outer wall of the front end cover.

[0008] In addition, a preferred structure is that the end of the housing that is connected to the front cover is provided with an insertion block, which is used to insert into the insertion cavity. Multiple first positioning grooves are evenly arranged on the outer wall of the housing on one side of the insertion block, and the first positioning grooves are adapted to the first positioning blocks.

[0009] In addition, a preferred structure is that a groove is provided in the middle of the outer surface of the insert block, and sealing rubber rings are symmetrically arranged on both sides of the groove on the outer surface of the insert block, with the rubber rings fitting into the groove.

[0010] Furthermore, in a preferred configuration, a plurality of second positioning grooves are evenly arranged on the outer wall of the connecting block, the second positioning grooves being adapted to the second positioning block, and a plurality of third positioning grooves are evenly arranged on the outer wall surface of the front end cover on the side away from the connecting block from the rubber ring, the third positioning grooves being adapted to the third positioning block.

[0011] The beneficial effects of this utility model are as follows: In this utility model, the groove and rubber ring form a double seal, and the symmetrical sealing rubber rings on both sides form a multi-layer three-dimensional sealing barrier. The rubber protrusions in the fixing ring continuously squeeze the rubber ring, automatically compensating for wear or deformation gaps, ensuring long-term sealing reliability and long service life. The first positioning block and the housing positioning groove, the second positioning block and the connecting block positioning groove, and the third positioning block and the end cover positioning groove form a three-level linkage locking, completely eliminating the risk of installation misalignment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the motor housing.

[0013] Figure 2 This is a schematic diagram of the structure after the retaining ring and housing are separated;

[0014] Figure 3 This is a schematic diagram of the structure of the retaining ring;

[0015] Figure 4 This is a structural diagram of the front cover;

[0016] Figure 5 This is a schematic diagram of the structure of the connection between the front cover and the housing;

[0017] Figure 6 This is a partially enlarged structural diagram of the front cover after it has been separated from the housing.

[0018] In the figure: 1 housing, 11 first positioning groove, 12 insert block, 13 sealing rubber ring, 14 groove, 2 front end cover, 21 connecting block, 211 second positioning groove, 22 third positioning groove, 23 insert cavity, 24 rubber ring, 3 fixing ring, 31 first positioning block, 32 rubber protrusion, 33 second positioning block, 34 third positioning block, 35 mounting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-6A sealing structure for an electric motor housing includes a housing 1, a front end cover 2 installed at one end of the housing 1, and fixing rings 3 symmetrically installed on the outer surface of the connection between the front end cover 2 and the housing 1. The fixing rings 3 are used to connect the housing 1 and the front end cover 2. The front end cover 2 is connected to the connecting block 21 through a rubber ring 24. A cavity 23 is opened on one side surface of the front end cover 2 located on the connecting block 21. The cavity 23 is used to install the housing 1. The rubber ring 24 is used to improve the sealing performance.

[0021] Meanwhile, mounting plates 35 are provided on both sides of the fixing ring 3, and a rubber protrusion 32 is provided in the middle of the inner wall of the fixing ring 3. Multiple first positioning blocks 31 are evenly arranged on one side of the rubber protrusion 32 on the inner wall of the fixing ring 3. The first positioning blocks 31 are used to be installed at the housing 1. Multiple second positioning blocks 33 and third positioning blocks 34 are evenly arranged in sequence on the other side of the rubber protrusion 32. The second positioning blocks 33 and third positioning blocks 34 are used to be installed on the outer wall of the front cover 2. The second positioning blocks 33 and third positioning blocks 34 are used to ensure accurate installation position.

[0022] In addition, a plug 12 is provided at one end of the housing 1 for connecting with the front cover 2. The plug 12 is inserted into the insertion cavity 23. Multiple first positioning grooves 11 are evenly arranged on the outer wall of the housing 1 on one side of the plug 12. The first positioning grooves 11 are adapted to the first positioning blocks 31. A groove 14 is provided in the middle of the outer surface of the plug 12. Sealing rubber rings 13 are symmetrically arranged on both sides of the groove 14 on the outer surface of the plug 12. The rubber rings 24 fit into the groove 14 to increase the sealing performance.

[0023] Among them, multiple second positioning grooves 211 are evenly arranged on the outer wall of the connecting block 21. The second positioning grooves 211 are used to adapt to the second positioning block 33. Multiple third positioning grooves 22 are evenly arranged on the outer wall surface of the front end cover 2 on the other side away from the connecting block 21 of the rubber ring 24. The third positioning grooves 22 are used to adapt to the third positioning block 34.

[0024] In this embodiment, when assembling the housing 1 and the front cover 2, ensure that the insert block 12 is inserted into the insert cavity 23, and then install the fixing ring 3. The first positioning block 31 is fully engaged into the first positioning groove 11, and ensure that the second positioning block 33 and the third positioning block 34 are fully engaged into the second positioning groove 211 and the third positioning groove 22. Then, use the existing fixing components to connect and fix the mounting plate 35. At this time, the rubber protrusion 32 presses against the rubber ring 24, so that it fits the groove 14 to prevent water from seeping into its connection.

[0025] In this invention, the groove 14 and the rubber ring 24 form a double seal, and together with the symmetrical sealing rubber rings 13 on both sides, a multi-layer three-dimensional sealing barrier is formed. The rubber protrusion 32 inside the fixing ring 3 continuously squeezes the rubber ring 24, automatically compensating for wear or deformation gaps, ensuring long-term sealing reliability. The first positioning block 31 and the housing positioning groove 11, the second positioning block 33 and the connecting block positioning groove 211, and the third positioning block 34 and the end cover positioning groove 22 form a three-level linkage locking, completely eliminating the risk of installation misalignment.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for an electric motor housing, comprising a housing (1), characterized in that, A front cover (2) is installed at one end of the housing (1). Fixing rings (3) are symmetrically installed on the outer surface of the connection between the front cover (2) and the housing (1). The fixing rings (3) are used to connect the housing (1) and the front cover (2). The front cover (2) is connected to the connecting block (21) through a rubber ring (24). An insertion cavity (23) is opened on one side surface of the front cover (2) located on the connecting block (21). The insertion cavity (23) is used to install the housing (1).

2. The sealing structure for a motor housing according to claim 1, characterized in that, The fixing ring (3) is provided with mounting plates (35) on both sides, and a rubber protrusion (32) is provided in the middle of the inner wall of the fixing ring (3).

3. The sealing structure for a motor housing according to claim 2, characterized in that, On the inner wall of the fixing ring (3), a plurality of first positioning blocks (31) are evenly arranged on one side of the rubber protrusion (32). The first positioning blocks (31) are used to be installed on the housing (1). On the other side of the rubber protrusion (32), a plurality of second positioning blocks (33) and third positioning blocks (34) are evenly arranged in sequence. The second positioning blocks (33) and third positioning blocks (34) are used to be installed on the outer wall of the front end cover (2).

4. The sealing structure for a motor housing according to claim 1, characterized in that, The housing (1) is provided with a plug (12) at one end for connecting to the front cover (2). The plug (12) is used to be inserted into the insertion cavity (23). Multiple first positioning grooves (11) are evenly arranged on the outer wall of the housing (1) on one side of the plug (12). The first positioning grooves (11) are adapted to the first positioning block (31).

5. The sealing structure for a motor housing according to claim 4, characterized in that, The insert (12) has a groove (14) in the middle of its outer surface. A sealing rubber ring (13) is symmetrically arranged on both sides of the groove (14) on the outer surface of the insert (12). The rubber ring (24) fits into the groove (14).

6. The sealing structure for a motor housing according to claim 1, characterized in that, The connecting block (21) has a plurality of second positioning grooves (211) evenly arranged on its outer wall. The second positioning grooves (211) are used to fit the second positioning block (33). The front end cover (2) has a plurality of third positioning grooves (22) evenly arranged on the outer wall surface of the rubber ring (24) away from the connecting block (21). The third positioning grooves (22) are used to fit the third positioning block (34).

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