End cover structure for improving service life of motor of range hood

Abstract

An end cover structure for improving the lifespan of a range hood motor includes a cover body with a heat dissipation hole at its center. A positioning boss and a bearing mounting seat are formed on the inner end face of the cover body, both coaxially aligned with the cover body. The positioning boss is lower than the bearing mounting seat. A bearing mounting sleeve is provided within the bearing mounting seat and is fixedly connected to it. The bearing mounting sleeve has a through hole that aligns with the heat dissipation hole on the cover body. By enlarging the original bearing mounting position on the end cover and adding a bearing mounting sleeve, the bearing is mounted using the bearing mounting sleeve. When the motor heats up, the bearing mounting sleeve reduces heat transfer between the bearing and the end cover, and it also acts as a buffer, preventing deformation of the bearing mounting position in the end cover due to bearing heat. This improves the service life of the end cover and further extends the lifespan of the motor.

Description

Technical Field

[0001] This utility model belongs to the field of range hood motor technology, specifically relating to an end cap structure that improves the lifespan of a range hood motor. Background Technology

[0002] In the manufacturing process of existing range hoods, the motor end cover has pre-drilled mounting holes for bearings during injection molding. The bearings supporting the motor rotor are directly embedded in the end cover. During use, the motor heats up, causing the bearings to move and heat up as well. However, because the heating coefficients of the bearings and the injection-molded housing are different, the heat from the bearings will compress the end cover. Over time, this continuous expansion and contraction will cause deformation at the bearing mounting position in the end cover, leading to loosening of the bearings. This, in turn, causes the motor rotor to vibrate during rotation, affecting the motor's lifespan. Summary of the Invention

[0003] The present invention mainly addresses the technical problems existing in the prior art and provides an end cap structure that improves the lifespan of a range hood motor.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: an end cover structure for improving the life of a range hood motor, including a cover body, a heat dissipation hole at the center of the cover body, a positioning boss and a bearing mounting seat on the inner end face of the cover body, the positioning boss and the bearing mounting seat are both coaxially arranged with the cover body, the height of the positioning boss is lower than that of the bearing mounting seat, a bearing mounting sleeve is provided in the bearing mounting seat, the bearing mounting sleeve is fixedly connected to the bearing mounting seat, the bearing mounting sleeve is provided with a through hole consistent with the heat dissipation hole of the cover body, and the heat dissipation hole and the through hole are aligned.

[0005] Preferably, the height of the bearing mounting base is greater than the height of the positioning boss.

[0006] Preferably, the bearing mounting sleeve has an annular positioning ring on its inner end face near the inside.

[0007] Preferably, the bearing mounting sleeve is made of stainless steel.

[0008] The beneficial effects of this utility model are as follows: by increasing the bearing mounting position of the original bearing on the end cover and adding a bearing mounting sleeve, the bearing is installed using the bearing mounting sleeve. When the motor heats up, the bearing mounting sleeve can reduce the heat transfer between the bearing and the end cover, and the bearing mounting sleeve can also act as a buffer between the two, preventing the bearing's heat from affecting the deformation of the bearing mounting position in the end cover. This can effectively improve the service life of the end cover and further increase the service life of the motor. Attached Figure Description

[0009] Figure 1This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a schematic diagram of one type of heat dissipation hole in this utility model.

[0011] In the diagram: 1. Cover; 2. Heat dissipation hole; 3. Positioning boss; 4. Bearing mounting seat; 5. Bearing mounting sleeve; 6. Through hole; 7. Annular positioning ring. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0013] Example: An end cap structure for improving the lifespan of a range hood motor, such as... Figures 1-2 As shown, the device includes a cover 1, with a heat dissipation hole 2 at its center. A positioning boss 3 and a bearing mounting seat 4 are provided on the inner end face of the cover 1. Both the positioning boss 3 and the bearing mounting seat 4 are coaxially arranged with the cover 1. The height of the positioning boss 3 is lower than that of the bearing mounting seat 4. A bearing mounting sleeve 5 is provided inside the bearing mounting seat 4. The bearing mounting sleeve 5 is fixedly connected to the bearing mounting seat 4. The bearing mounting sleeve 5 has a through hole 6 that is consistent with the heat dissipation hole 2 of the cover. The heat dissipation hole 2 and the through hole 6 are aligned.

[0014] The height of the bearing mounting base 4 is greater than the height of the positioning boss 3; the inner end face of the bearing mounting sleeve 5 is provided with an annular positioning ring 7; the bearing mounting sleeve 5 is made of stainless steel.

[0015] By enlarging the bearing mounting position where the bearing was originally installed on the end cover and adding a bearing mounting sleeve 5, which is pre-installed during the injection molding process of the end cover, the integrity of the two can be effectively guaranteed. The bearing is installed using the bearing mounting sleeve 5. When the motor heats up, the bearing mounting sleeve 5 can reduce the heat transfer between the bearing and the end cover. In addition, the bearing mounting sleeve 5 can act as a buffer between the two, preventing the bearing's heat from affecting the deformation of the bearing mounting position in the end cover. This can effectively improve the service life of the end cover and further increase the service life of the motor.

[0016] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A kind of end cover structure of improving the life of range hood motor, including cover (1), it is characterized by: The cover (1) has a heat dissipation hole (2) at its center. The inner end face of the cover (1) has a positioning boss (3) and a bearing mounting seat (4). The positioning boss (3) and the bearing mounting seat (4) are both coaxial with the cover (1). The height of the positioning boss (3) is lower than that of the bearing mounting seat (4). The bearing mounting seat (4) has a bearing mounting sleeve (5) inside. The bearing mounting sleeve (5) is fixedly connected to the bearing mounting seat (4). The bearing mounting sleeve (5) has a through hole (6) that is consistent with the heat dissipation hole (2) of the cover. The heat dissipation hole (2) and the through hole (6) are aligned.

2. The end cover structure for improving the service life of a motor of a range hood according to claim 1, characterized in that: The height of the bearing mounting base (4) is greater than the height of the positioning boss (3).

3. The end cover structure for increasing the life of a motor of a range hood according to claim 1, characterized in that: The bearing mounting sleeve (5) has an annular positioning ring (7) on its inner end face.

4. The end cover structure for increasing the life of a motor of a range hood according to claim 1, wherein: The bearing mounting sleeve (5) is made of stainless steel.

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