Waterproof structure of motor output end

Abstract

A waterproof structure of a motor output end comprises a motor, the motor is provided with an output shaft, one end, provided with the output shaft, of the motor is connected with a waterproof cover, a through hole is formed in the center of the waterproof cover, mounting grooves are formed in the two sides of the through hole, waterproof oil seals are mounted in the two mounting grooves, and the output shaft penetrates through the through hole and the waterproof oil seals. The output shaft coincides with the axis of the through hole and the axis of the waterproof oil seal. According to the utility model, the two oil seals with the same specification and size and opposite installation directions are adopted for sealing from the two sides of the output shaft, so that the risk that water permeates into the motor from the output shaft is greatly reduced. The waterproof cover is detachably connected to the motor through the installation block, and installation and maintenance are convenient. Meanwhile, the bearing is arranged in the through hole of the waterproof cover, so that the output shaft can be rotationally connected with the through hole through the bearing, normal rotation of the output shaft is guaranteed, and the sealing performance of the waterproof structure is not affected. The sealing rubber ring between the waterproof cover and the motor further enhances the sealing performance of the joint, and water is prevented from entering the motor from the joint.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of motors, and in particular to a waterproof structure of a motor output end. Background Art

[0002] Electric motors are currently an indispensable driving device in a wide range of applications, including machining, automotive electrical equipment, national defense, aerospace, and industrial and agricultural production. However, due to the complex and diverse use of electric motors, some applications inevitably involve contact with water.

[0003] The existing technology discloses a waterproof motor, including a motor housing and an output shaft. The motor housing includes a motor front cover, a rear end cover and a rear cover connected in sequence. A waterproof structure is provided on the motor housing, and the waterproof structure includes an output shaft waterproof structure and a rear cover waterproof structure. The output shaft waterproof structure includes a labyrinth waterproof structure arranged between the output shaft and the motor front cover; the rear cover waterproof structure includes an annular drainage groove opened on the motor front cover and close to the position of the annular mounting groove.

[0004] However, although such a design ensures the smoothness of the rotation of the motor output shaft, the waterproof effect is not ideal. Therefore, a waterproof structure of the motor output end with better waterproof effect is needed. Utility Model Content

[0005] The utility model mainly provides a waterproof structure of a motor output end, which is used to solve the technical problems raised in the above background technology.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A waterproof structure for a motor output end, comprising a motor, wherein the motor is provided with an output shaft, and one end of the motor provided with the output shaft is connected to a waterproof cover;

[0008] A through hole is provided in the center of the waterproof cover, mounting grooves are provided on both sides of the through hole, and waterproof oil seals are installed in both mounting grooves. The output shaft passes through the through hole and the waterproof oil seal, and the output shaft coincides with the axis of the through hole and the waterproof oil seal.

[0009] Furthermore, a bearing is provided in the through hole, and the axis of the bearing coincides with the axis of the output shaft, and the output shaft is rotatably connected to the through hole via the bearing.

[0010] Furthermore, a mounting block is provided on the waterproof cover, and the waterproof cover is detachably connected to the motor via the mounting block, and a sealing rubber ring is provided between the waterproof cover and the motor.

[0011] Furthermore, the two oil seals have the same specifications and sizes, and are installed in opposite directions.

[0012] Furthermore, the oil seal includes a metal frame and a sealing lip. The outside of the metal frame is wrapped with rubber for installing a waterproof oil seal. The sealing lip is made of elastic rubber material and can fit tightly against the output shaft.

[0013] Furthermore, a guide groove is provided on the outer surface of the waterproof cover, and the cross section of the guide groove is V-shaped.

[0014] Furthermore, the motor housing is provided with heat dissipation fins, and the heat dissipation fins are evenly distributed on the outer surface of the motor housing in a circular shape.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model adopts two oil seals with the same specifications and sizes and opposite installation directions to seal from both sides of the output shaft, which greatly reduces the risk of water seeping into the interior of the motor from the output shaft. The waterproof cover is detachably connected to the motor through a mounting block, which is convenient for installation and maintenance. At the same time, a bearing is provided in the through hole of the waterproof cover so that the output shaft can be rotatably connected to the through hole through the bearing, which not only ensures the normal rotation of the output shaft but also does not affect the sealing performance of the waterproof structure. The sealing rubber ring between the waterproof cover and the motor further enhances the sealing of the connection and prevents water from entering the motor from the connection. The V-shaped guide groove on the outer surface of the waterproof cover can effectively guide the water flow away from the motor, avoid water accumulation on the surface of the waterproof cover, and thus reduce the possibility of water seeping into the motor. Through the above-mentioned multiple measures and reasonable design, the waterproof performance and reliability of the motor are improved, which has broad application prospects and practical significance.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the waterproof shell of the present utility model;

[0020] Figure 3 for Figure 3 Schematic diagram of the enlarged view at point A in the middle;

[0021] Figure 4 This is a cross-sectional view of the waterproof oil seal of the present utility model.

[0022] Reference numerals in the figure: 1. motor; 101. output shaft; 102. heat sink fin; 2. waterproof cover; 201. through hole; 202. mounting groove; 203. bearing; 204. mounting block; 205. sealing rubber ring; 206. guide groove; 3. waterproof oil seal; 301. metal frame; 302. rubber layer; 303. sealing lip; 304. spring. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive. Example

[0024] Please refer to the attached Figure 1 、 2 As shown, a waterproof structure of the motor output end includes a motor 1, the motor 1 is provided with an output shaft 101, one end of the motor 1 provided with the output shaft 101 is connected to a waterproof cover 2, a through hole 201 is provided in the center of the waterproof cover 2, a bearing 203 is provided in the through hole 201, waterproof oil seals 3 are installed in the mounting grooves 202 on both sides of the through hole 201, the output shaft 101 passes through the through hole 201 and the waterproof oil seal 3, and the output shaft 101 coincides with the axis of the bearing 203, the through hole 201 and the waterproof oil seal 3.

[0025] It should be noted that a mounting block 204 is provided on the waterproof cover 2, and the waterproof cover 2 is detachably connected to the motor 1 with bolts through the mounting block 204, and a sealing rubber ring 205 is provided between the waterproof cover 2 and the motor 1. A guide groove 206 is provided on the outer surface of the waterproof cover 2. The cross-section of the guide groove 206 is V-shaped, which can effectively guide the water flow away from the motor 1 and avoid water accumulation on the surface of the waterproof cover 2.

[0026] It should be noted that the output shaft 101 is rotatably connected to the through hole 201 via the bearing 203. This ensures the normal rotation of the output shaft 101 without affecting the sealing performance of the waterproof structure.

[0027] It should be noted that the motor 1 housing is provided with heat dissipation fins 102, which are evenly distributed on the outer surface of the motor 1 housing in a circular shape, ensuring the waterproof performance of the motor while enabling the motor to operate within the normal operating temperature range.

[0028] Please refer to the attached Figure 3 As shown, the waterproof oil seal 3 includes a metal frame 301 and a sealing lip 303 . The metal frame 301 is wrapped with a rubber layer 302 , and the sealing lip 303 is provided with a spring 304 .

[0029] It should be noted that the metal skeleton 301 provides support and strength for the waterproof oil seal 3, so that it can maintain a stable shape during installation and use, preventing the waterproof oil seal 3 from deformation or damage. The sealing lip 303 is made of elastic rubber and fits tightly on the surface of the output shaft 101 to form a dynamic seal to prevent moisture from entering the interior of the motor 1. The spring 304 provides continuous pressure to the sealing lip 303, so that it can fit more closely on the surface of the output shaft 101. The elasticity of the spring 304 can also compensate for the wear and deformation of the sealing lip 303 during use, ensuring that the waterproof oil seal 3 always maintains good sealing performance.

[0030] It should be noted that the specifications and dimensions of the two waterproof oil seals 3 are the same. The sealing lip 303 of the waterproof oil seal 3 on the outer wall of the waterproof cover 2 faces inward, which can block most of the moisture; the sealing lip 303 of the waterproof oil seal 3 on the inner wall faces outward, further strengthening the seal and preventing a small amount of moisture that may pass through the first waterproof oil seal 3 from entering the interior of the motor 1.

[0031] The specific operation mode of the utility model is as follows:

[0032] The bearing 203 within the through-hole 201 enables the output shaft 101 to rotate stably, ensuring the normal operation of the motor 1. The sealing lip 303 of the waterproof oil seal 3 on the outer wall of the waterproof cover 2 faces inward, blocking most moisture. The sealing lip 303 of the waterproof oil seal 3 on the inner wall faces outward, further strengthening the seal and preventing a small amount of moisture that may pass through the first waterproof oil seal 3 from entering the interior of the motor 1. The V-shaped guide groove 206 on the outer surface of the waterproof cover 2 effectively guides water away from the motor 1, preventing water from accumulating on the surface of the waterproof cover 2. The sealing rubber ring 205 between the waterproof cover 2 and the motor 1 further strengthens the sealing of the connection, preventing water from seeping into the motor through the connection.

[0033] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A waterproof structure for a motor output end, comprising a motor (1), characterized in that: The motor (1) is provided with an output shaft (101), and one end of the output shaft (101) of the motor (1) is connected to a waterproof cover (2); A through hole (201) is provided at the center of the waterproof cover (2), mounting grooves (202) are provided on both sides of the through hole (201), and waterproof oil seals (3) are installed in the two mounting grooves (202), the output shaft (101) passes through the through hole (201) and the waterproof oil seal (3), and the axis of the output shaft (101) coincides with the axis of the through hole (201) and the waterproof oil seal (3).

2. The waterproof structure of the motor output end according to claim 1, characterized in that: A bearing (203) is provided in the through hole (201), and the bearing (203) coincides with the axis of the output shaft (101). The output shaft (101) is rotatably connected to the through hole (201) via the bearing (203).

3. The waterproof structure of the motor output end according to claim 1, characterized in that: A mounting block (204) is provided on the waterproof cover (2), the waterproof cover (2) is detachably connected to the motor (1) via the mounting block (204), and a sealing rubber ring (205) is provided between the waterproof cover (2) and the motor (1).

4. The waterproof structure of the motor output end according to claim 1, characterized in that: The two oil seals have the same specifications and sizes, and are installed in opposite directions.

5. The waterproof structure of the motor output end according to claim 4, characterized in that: The oil seal comprises a metal skeleton (301) and a sealing lip (303); the metal skeleton (301) is externally wrapped with a rubber layer (302); and the sealing lip (303) is internally provided with a spring (304).

6. The waterproof structure of the motor output end according to claim 1, characterized in that: The outer surface of the waterproof cover (2) is provided with a guide groove (206), and the cross section of the guide groove (206) is V-shaped.

7. The waterproof structure of the motor output end according to claim 1, characterized in that: The motor (1) housing is provided with heat dissipation fins (102), and the heat dissipation fins (102) are evenly distributed in a circumferential manner on the outer surface of the motor (1) housing.

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