Motor end cover sealing structure

Abstract

A motor end cover sealing structure belongs to the technical field of motors. By arranging the water blocking check ring and the cover cap, the water blocking check ring is used for blocking rainwater flowing in along the main shaft of the motor, so that the rainwater can be effectively prevented from entering the interior of the motor to cause damage to the motor; and the plane end on the water blocking end is matched with the U-shaped part on the cover cap, so that rainwater can be further blocked, and the situation that the motor is damaged due to the fact that the rainwater is thrown into the motor by rotating the main shaft of the motor is prevented.

Description

Technical Field

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

[0002] In production practice, it is usually necessary to install the motor in various harsh environments, such as rain or other water-intrusive environments. The motor in the prior art is prone to water ingress, which is not conducive to the normal use of the motor. For example, the existing transformer heat dissipation motor is installed outdoors. During the outdoor installation of the transformer, due to rain and snow, the heat dissipation motor is prone to rainwater ingress. The rainwater will enter the motor along the motor shaft and cause damage to the motor. In particular, when the motor has a drive device inside, the drive device will be damaged, causing the motor to fail. Summary of the invention

[0003] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a motor end cover sealing structure.

[0004] The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: a motor end cover sealing structure, including a motor main shaft, the end cover is sleeved on the motor main shaft, a clamping boss is provided at the center position of the front side surface of the end cover, the end of the motor main shaft is a threaded structure, and a mounting step is provided on the motor main shaft at the rear end of the threaded structure, the diameter of the mounting step is larger than the diameter of the motor main shaft, and an annular boss is provided at both the front and rear ends of the mounting step, a water-blocking retaining ring is sleeved on the mounting step, the water-blocking retaining ring includes a connecting portion connected to the mounting step and a conical water-blocking end, the connecting portion is sleeved on the mounting step, and a clamping groove matching the annular boss is provided at both the front and rear ends, the diameter of one side of the water-blocking end connected to the connecting portion is smaller than the diameter of the front end, a cover is sleeved on the clamping boss, one end of the cover is sleeved on the clamping boss, and the other end is sleeved on the front end of the water-blocking retaining ring.

[0005] Preferably, the front end of the water-blocking end is provided with a planar end extending in the axial direction.

[0006] Preferably, the front end of the cover is provided with a U-shaped portion folded backwards, and the plane end of the front end of the water-blocking end is placed in the U-shaped portion of the front end of the cover, and the two do not contact each other.

[0007] Preferably, the water-blocking retaining ring is made of rubber material, and the cover is made of plastic material.

[0008] Preferably, a drain outlet is provided at the lowest end of the cover.

[0009] The utility model has the beneficial effects of: by arranging the water-blocking retaining ring and the cover, the water-blocking retaining ring is used to block rainwater flowing in along the motor main shaft, thereby effectively preventing rainwater from entering the interior of the motor and causing damage to the motor; by arranging the flat end on the water-blocking end to cooperate with the U-shaped part on the cover, rainwater can be further blocked to prevent the rotating motor main shaft from throwing rainwater into the interior of the motor and causing damage to the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0012] In the figure: 1. end cover; 2. motor main shaft; 3. snap-on boss; 4. mounting step; 5. annular boss; 6. water-blocking retaining ring; 7. connecting part; 8. water-blocking end; 9. slot; 10. cover; 11. plane end; 12. U-shaped part; 13. drain outlet. DETAILED DESCRIPTION

[0013] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0014] Embodiment: A motor end cover sealing structure, such as Figure 1-Figure 2 As shown, it includes a motor spindle 2, the end cover 1 is sleeved on the motor spindle 2, a clamping boss 3 is provided at the center position of the front side of the end cover 1, the end of the motor spindle 2 is a threaded structure, and a mounting step 4 is provided on the motor spindle 2 at the rear end of the threaded structure. The diameter of the mounting step 4 is larger than the diameter of the motor spindle 2, and an annular boss 5 is provided at both the front and rear ends of the mounting step 4, and a water-blocking retaining ring 6 is sleeved on the mounting step 4, and the water-blocking retaining ring 6 includes a connecting portion 7 connected to the mounting step 4 and a conical water-blocking end 8, the connecting portion 7 is sleeved on the mounting step 4, and a clamping groove 9 cooperating with the annular boss 5 is provided at the front and rear ends, the diameter of the side of the water-blocking end 8 connected to the connecting portion 7 is smaller than the diameter of the front end, and a cover 10 is sleeved on the clamping boss 3, one end of the cover 10 is sleeved on the clamping boss 3, and the other end is sleeved on the front end of the water-blocking retaining ring 6.

[0015] The front end of the water blocking end 8 is provided with a flat end 11 extending in the axial direction; the front end of the cover 10 is provided with a U-shaped portion 12 folded backwards, and the flat end 11 at the front end of the water blocking end 8 is placed in the U-shaped portion 12 at the front end of the cover 10, and the two do not contact each other; the water blocking ring 6 is made of rubber material, and the cover 10 is made of plastic material; the lowest end of the cover 10 is provided with a drain port 13.

[0016] The principle of the utility model is as follows: during installation, the water-blocking retaining ring 6 is firstly sleeved on the installation step 4 of the motor main shaft 2, and the two annular bosses 5 are embedded in the two card grooves 9 to achieve a tight connection between the two, and finally the cover 10 is pressed onto the card-connecting boss 3. Due to the control of size during the installation process, when the cover is pressed onto the card-connecting boss 3, the flat end 11 of the rubber material will be squeezed into the U-shaped part 12 of the cover 10, and there will be a gap between the two to prevent friction when the motor is running; when the motor is running, when rainwater flows along the motor main shaft 2 to the position of the water-blocking retaining ring 6, it will be blocked by the water-blocking retaining ring 6 to prevent it from entering the inside of the motor, and the rotation of the motor main shaft 2 will drive the rainwater to swing, and the swinging rainwater may enter the inside of the cover and eventually be discharged through the drain port 13.

[0017] Finally, it should be pointed out that the above embodiments are only representative examples of the present utility model. Obviously, the present utility model is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model should be considered to belong to the protection scope of the present utility model.

Claims

1. A motor end cover sealing structure, comprising a motor main shaft (2), characterized in that: The end cover (1) is sleeved on the motor main shaft (2), a clamping boss (3) is provided at the center position of the front side of the end cover (1), the end of the motor main shaft (2) is a threaded structure, a mounting step (4) is provided on the motor main shaft (2) at the rear end of the threaded structure, the diameter of the mounting step (4) is larger than the diameter of the motor main shaft (2), and an annular boss (5) is provided at both the front and rear ends of the mounting step (4), a water-blocking retaining ring (6) is sleeved on the mounting step (4), and the water-blocking retaining ring (6) is provided on the mounting step (4). The retaining ring (6) comprises a connecting portion (7) connected to the mounting step (4) and a conical water-blocking end (8); the connecting portion (7) is sleeved on the mounting step (4), and a clamping groove (9) is provided at both ends thereof to cooperate with the annular boss (5); the diameter of the side where the water-blocking end (8) is connected to the connecting portion (7) is smaller than the diameter of the front end; a cover (10) is sleeved on the clamping boss (3); one end of the cover (10) is sleeved on the clamping boss (3), and the other end is sleeved on the front end of the water-blocking retaining ring (6).

2. The sealing structure of the motor end cover (1) according to claim 1, characterized in that: The front end of the water blocking end (8) is provided with a plane end (11) extending in the axial direction.

3. The sealing structure of the motor end cover (1) according to claim 1, characterized in that: The front end of the cover (10) is provided with a U-shaped portion (12) folded backwards, and the plane end (11) at the front end of the water blocking end (8) is placed in the U-shaped portion (12) at the front end of the cover (10), and the two do not contact each other.

4. The sealing structure of the motor end cover (1) according to claim 1, characterized in that: The water-blocking retaining ring (6) is made of rubber material, and the cover (10) is made of plastic material.

5. The sealing structure of the motor end cover (1) according to claim 1, characterized in that: The lowest end of the cover (10) is provided with a water drain port (13).

Images