Silent fan cover applied to industrial motor
By absorbing vibration noise through side rubber sleeves and combining them with a clip and slot structure, the noise problem of the motor fan cover under high-frequency vibration is solved, achieving silent operation and efficient installation, and simplifying the assembly process of the motor fan cover.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU HANSHENG ELECTROMECHANICAL CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-14
AI Technical Summary
The motor fan cover is prone to loosening under high-frequency vibration, leading to noise problems and installation difficulties. Existing O-ring positioning is difficult, affecting production efficiency.
The design features a side rubber sleeve that absorbs vibration through elastic deformation, enhances stability through the combination of a retaining strip and a retaining groove structure, and simplifies the installation process by guiding and correcting the installation position through a chamfered surface.
It effectively eliminates noise, improves assembly efficiency, prevents side rubber sleeves from slipping off, simplifies installation steps, and improves production efficiency.
Smart Images

Figure CN224123980U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of motors, and in particular to a silent fan cover for industrial motors. Background Technology
[0002] To improve heat dissipation, some motor models have a fan and a protective cover installed on the other side of the motor's output shaft. When the output shaft rotates, it drives the fan, causing the airflow generated by the fan to flow to the motor's heat sink, accelerating heat dissipation. However, the protective cover, as a separate accessory, is usually fitted onto the motor and secured with screws. The high-frequency vibrations generated when the motor is running can cause the screws to loosen, resulting in rigid friction between the protective cover and the motor, producing harsh mechanical noise. The traditional solution is to fit an O-ring between the contact surfaces. While this structure can solve the noise problem, it presents difficulties in positioning the O-ring during installation, leading to low production efficiency. Utility Model Content
[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is: a silent fan cover for industrial motors, including a motor body, an aluminum side cover, a fan and a protective cover. The motor body is detachably connected to the aluminum side cover, and the motor body is provided with an output shaft that passes through itself. The output shaft passes through the aluminum side cover and is connected to the fan. The aluminum side cover is provided with mounting parts distributed in a circular pattern, and the protective cover is detachably connected to the mounting parts. It also includes a side rubber sleeve, which is snapped into the mounting parts and abuts against the mounting parts and the protective cover.
[0004] By adopting the above technical solution, the side rubber sleeve can effectively absorb the vibration generated by the motor during operation through its elastic deformation capability, avoid the screws from loosening due to high frequency vibration, and eliminate the abnormal noise caused by vibration friction between the cover and the aluminum side cover, thereby realizing the silent operation of the industrial motor fan cover.
[0005] The present invention is further configured such that the side rubber sleeve is in the shape of a cuboid, and the side rubber sleeve is provided with a mounting groove that is adapted to the mounting part.
[0006] With the above technical solution, the side rubber sleeve is symmetrically designed. During installation, it can be installed simply by aligning the mounting groove with the mounting part, which simplifies the installation method and improves assembly efficiency.
[0007] The present invention is further configured such that the side rubber sleeve is provided with retaining strips on both sides of the mounting groove, and the mounting part is provided with retaining grooves that are adapted to the retaining strips.
[0008] By adopting the above technical solution, locking strips are set on both sides of the side rubber sleeve, which improves the structural strength of the side rubber sleeve and forms a tight fit with the locking groove of the installation part, effectively solving the problem of the side rubber sleeve easily slipping off during the assembly of the protective cover.
[0009] The present invention is further configured such that the outer side of the mounting part is provided with a threaded hole for connecting the protective cover, and the side rubber sleeve is provided with an elongated hole corresponding to the threaded hole.
[0010] With the above technical solution, both the protective cover and the side rubber sleeve are provided with elongated holes, so that the threaded holes can be seen directly when the protective cover is fitted onto the aluminum side cover, which effectively reduces the time for aligning the threaded holes and improves assembly efficiency.
[0011] The present invention is further configured such that the mounting part is provided with a through hole for connecting the motor body, the motor body is provided with a threaded part adapted to the through hole, and the side rubber sleeve is provided with an opening groove in the direction of the threaded part.
[0012] By adopting the above technical solution, the opening groove provides a natural deformation space for the end of the side rubber sleeve, preventing the side rubber sleeve from cracking during installation. At the same time, the opening groove effectively avoids screws and nuts installed on the through hole, solving the problem of fastener interference.
[0013] The present invention is further provided that the side of the side sleeve facing the protective cover has a chamfered surface.
[0014] By adopting the above technical solution, the chamfered surface guides the protective cover to automatically correct the installation position deviation during installation, thereby improving the convenience of installation.
[0015] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description
[0016] Figure 1 This is an exploded view of the structure of this utility model;
[0017] Figure 2 This is a perspective view of the side rubber sleeve of this utility model;
[0018] Figure 3 This is a front view of the side rubber sleeve of this utility model;
[0019] Figure 4 For the present utility model Figure 1 A magnified view of the central A-direction view;
[0020] Among them: 1-motor body, 2-aluminum side cover, 3-fan, 4-protective cover, 5-output shaft, 6-side rubber sleeve, 11-screw connection, 12-gap, 21-mounting part, 22-slot, 23-threaded hole, 24-through hole, 61-mounting groove, 62-slot strip, 63-elongated hole, 64-opening groove, 65-chamfered surface; Detailed Implementation
[0021] like Figure 1 As shown, this utility model provides a silent fan cover for industrial motors, including a motor body 1, an aluminum side cover 2, a fan 3, and a protective cover 4. The motor body 1 is detachably connected to the aluminum side cover 2, and the motor body 1 is provided with an output shaft 5 that passes through itself. The output shaft 5 passes through the aluminum side cover 2 and is connected to the fan 3. The aluminum side cover 2 is provided with a circumferentially distributed mounting part 21, and the protective cover 4 is detachably connected to it through the mounting part 21. It also includes a side rubber sleeve 6, which is snapped into the mounting part 21 and abuts against the mounting part 21 and the protective cover 4.
[0022] Combination Figure 2 As shown, in this embodiment, the side rubber sleeve 6 is generally rectangular, and the side rubber sleeve 6 is provided with a mounting groove 61 that is adapted to the mounting part 21. The side rubber sleeve 6 is symmetrically designed, and it can be installed simply by facing the mounting groove 61 toward the mounting part 21, which simplifies the installation method and improves the assembly efficiency.
[0023] Combination Figure 4 As shown, in this embodiment, the side rubber sleeve 6 is provided with retaining strips 62 on both sides of the mounting groove 61, and the mounting part 21 is provided with a retaining groove 22 that matches the retaining strips 62. The retaining strips 62 on both sides of the side rubber sleeve 6 improve the structural strength of the side rubber sleeve 6 and form a tight fit with the retaining groove 22 of the mounting part 21, effectively solving the problem that the side rubber sleeve 6 is easy to slip off during the assembly of the protective cover 4.
[0024] Combination Figure 3 As shown, in this embodiment, the outer side of the mounting part 21 is provided with a threaded hole 23 for connecting the protective cover 4, and the side rubber sleeve 6 is provided with an elongated hole 63 corresponding to the threaded hole 23. Both the protective cover 4 and the side rubber sleeve 6 are provided with elongated holes 63, so that the threaded hole 23 can be seen directly when the protective cover 4 is fitted onto the aluminum side cover 2. The mounting part 21 is provided with a through hole 24 for connecting the motor body 1. The motor body 1 is provided with a screw connection part 11 that is adapted to the through hole 24. A gap 12 for accommodating the side rubber sleeve 6 is provided between the screw connection part 11 and the mounting part 21. The side rubber sleeve 6 is provided with an opening groove 64 in the direction facing the screw connection part 11. The opening groove 64 provides a natural deformation space for the end of the side rubber sleeve 6, preventing the side rubber sleeve 6 from cracking during installation. At the same time, the opening groove 64 effectively avoids the screws and nuts installed on the through hole 24. The side of the side rubber sleeve 6 facing the protective cover 4 is provided with a chamfered surface 65. Through the guiding effect of the chamfered surface 65, the protective cover 4 can automatically correct the installation position deviation during installation.
[0025] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A silent fan cover for an industrial motor, comprising a motor body (1), an aluminum side cover (2), a fan (3), and a protective cover (4), wherein the motor body (1) is detachably connected to the aluminum side cover (2), and the motor body (1) is provided with an output shaft (5) passing through it, the output shaft (5) passing through the aluminum side cover (2) and connected to the fan (3), the aluminum side cover (2) is provided with mounting portions (21) distributed in a circular pattern, and the protective cover (4) is detachably connected to it through the mounting portions (21), characterized in that, It also includes a side rubber sleeve (6), which is snapped into the mounting part (21) and abuts between the mounting part (21) and the protective cover (4).
2. The silent fan cover for industrial motors according to claim 1, characterized in that: The side rubber sleeve (6) is in the shape of a cuboid, and the side rubber sleeve (6) is provided with a mounting groove (61) that is compatible with the mounting part (21).
3. A silent fan cover for industrial motors according to claim 2, characterized in that: The side rubber sleeve (6) is provided with retaining strips (62) on both sides of the mounting groove (61), and the mounting part (21) is provided with a retaining groove (22) that matches the retaining strips (62).
4. A silent fan cover for industrial motors according to claim 1, characterized in that: The outer side of the mounting part (21) is provided with a threaded hole (23) for connecting the cover (4), and the side rubber sleeve (6) is provided with an elongated hole (63) corresponding to the threaded hole (23).
5. A silent fan cover for industrial motors according to claim 1, characterized in that: The mounting part (21) is provided with a through hole (24) for connecting the motor body (1), the motor body (1) is provided with a screw part (11) adapted to the through hole (24), and the side rubber sleeve (6) is provided with an opening groove (64) facing the screw part (11).
6. A silent fan cover for industrial motors according to claim 4, characterized in that: The side sleeve (6) has a chamfered surface (65) on the side facing the cover (4).