An exhaust fan motor

Abstract

The utility model discloses an exhaust fan motor, include: front end cover, stator and rear end cover, stator is exposed and is clamped between the front end cover and the rear end cover, be connected with the mounting support on the rear end cover, and the mounting support includes center block and L type clamping arm, and the L type clamping arm is in the circumferential distribution on the center block, and the inboard of L type clamping arm is equipped with the shock pad, and the shock pad is in contact with the outer wall of rear end cover. The utility model discloses novel structure, and the heat dissipation effect is good, and the shock pad can buffer the mechanical vibration produced in the motor operation process, reduces the vibration transmission, avoids the breathing fan and produces the abnormal sound.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and in particular relates to an exhaust fan motor. Background Technology

[0002] An exhaust fan is an air conditioning appliance that uses a motor to drive the fan blades to rotate and generate airflow, thereby exchanging indoor and outdoor air.

[0003] Existing exhaust fan motors have the following defects: 1. The casing covers the stator, making it difficult for the heat inside the stator to dissipate, which can easily cause overheating and damage to components; 2. The motor is fixed inside the exhaust fan casing by a bracket, and the motor inevitably vibrates during operation. The bracket transmits the vibration to the exhaust fan casing, which in turn produces abnormal noise.

[0004] Existing patent document (publication number: CN203301283U) discloses "an exhaust fan motor", which also has the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide an exhaust fan motor with a novel structure, good heat dissipation effect, and shock-absorbing pads that can buffer the mechanical vibration generated during motor operation, reduce vibration transmission, and prevent the exhaust fan from making abnormal noise.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An exhaust fan motor includes a front cover, a stator, and a rear cover. The stator is exposed and clamped between the front and rear covers. A mounting bracket is connected to the rear cover. The mounting bracket includes a central block and L-shaped clamping arms. The L-shaped clamping arms are circumferentially distributed on the central block, and shock-absorbing pads are provided on the inner sides of the L-shaped clamping arms, abutting against the outer wall of the rear cover. This motor has a novel structure, good heat dissipation, and the shock-absorbing pads can buffer the mechanical vibrations generated during motor operation, reduce vibration transmission, and prevent abnormal noise from the exhaust fan.

[0008] Furthermore, the rear end cover is equipped with a threaded post, on which a positioning ring is mounted. The L-shaped clamping arm has a positioning through hole corresponding to the positioning ring. A locking cap is connected to the threaded post, and the locking cap engages with the back of the rear end cover to clamp the L-shaped clamping arm, thus fixing the mounting bracket to the rear end cover. By fitting the positioning through hole over the positioning ring, the L-shaped clamping arm is quickly positioned on the rear end cover. Then, the locking cap is installed on the threaded post, pressing down on the L-shaped clamping arm and preventing it from freely detaching from the threaded post. This effectively limits and fixes the mounting bracket to the rear end cover, creating a stable and reliable integrated unit.

[0009] Furthermore, the threaded post has a threaded extension end, and the back of the rear end cap has a threaded hole that mates with the threaded extension end. The threaded post is easy to install and remove, and can be used immediately, offering flexibility and convenience.

[0010] Furthermore, a thickened plate is provided on the back of the rear end cover, and threaded holes are located on the thickened plate. The thickened plate improves the surface structural strength of the rear end cover on the one hand, and increases the depth of the threaded holes on the other hand, enabling them to be connected with sufficiently long threaded extension ends, thereby improving the installation strength of the threaded post.

[0011] Furthermore, the front cover is provided with a first ear block, and the rear cover is provided with a second ear block. A fastener connects the second ear block and the first ear block. By removing the fastener, the front cover and the rear cover can be separated, making them easy to install and use.

[0012] Furthermore, a positioning groove is provided on the outer wall of the stator, and positioning protrusions corresponding to the positioning grooves are provided on the inner walls of the front and rear covers. By aligning the positioning protrusions with the positioning grooves, the front and rear covers can be quickly positioned at both ends of the stator, which is simple to operate and has high assembly efficiency.

[0013] Furthermore, both the front and rear covers are equipped with heat dissipation grooves, which facilitate axial airflow, carry away heat from the stator, and improve heat dissipation efficiency.

[0014] Furthermore, the L-shaped clamping arm has an outer extension section with countersunk holes for bolts to pass through. Bolts are driven into the countersunk holes to fix the L-shaped clamping arm in the designated installation position inside the exhaust fan housing, making installation convenient.

[0015] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0016] 1. The shock-absorbing pad can buffer the mechanical vibration generated during motor operation, reduce vibration transmission, and prevent the exhaust fan from making abnormal noise; the L-shaped clamping arm contacts the rear end cover through the shock-absorbing pad, and the L-shaped clamping arm distributed around the rear end cover clamps the rear end cover, which plays a limiting role in the motor, prevents the motor from shaking radially, and improves the stability of the motor.

[0017] 2. During assembly, align the positioning protrusions with the positioning grooves to quickly position the front and rear covers at both ends of the stator. The operation is simple and the assembly efficiency is high. Then, the end screw passes through the first lug and is screwed to the second lug to fix it, so that the first lug and the second lug are connected as one unit. This restricts the relative movement between the front and rear covers, and the front cover and the rear cover work together to clamp the stator, making it difficult for them to fall apart. There will be no relative rotation between the front cover, the rear cover and the stator, resulting in high assembly stability. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of an exhaust fan motor according to the present invention;

[0020] Figure 2 for Figure 1 The main view;

[0021] Figure 3 This is a schematic diagram of the connection between the rear end cover and the mounting bracket in this utility model;

[0022] Figure 4 This is a schematic diagram of the connection between the rear end cover and the mounting bracket in this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the rear end cover in this utility model;

[0024] Figure 6 This is a schematic diagram of the mounting bracket in this utility model;

[0025] Figure 7 This is a schematic diagram of the front end cover in this utility model;

[0026] Figure 8 This is a schematic diagram of the stator structure in this utility model.

[0027] In the diagram: 1-Front end cover; 2-Rear end cover; 3-Motor shaft; 4-Stator; 5-Positioning groove; 6-Positioning protrusion; 7-First lug; 8-Second lug; 9-End screw; 10-Mounting bracket; 11-Center block; 12-L-shaped clamping arm; 13-Shock damping pad; 14-Threaded post; 15-Positioning ring; 16-Positioning through hole; 17-Locking cap; 18-Threaded extension end; 19-Thickened plate; 20-Threaded hole; 21-Outer extension section; 22-Counterhole; 23-Heat dissipation groove. Detailed Implementation

[0028] like Figures 1 to 8 As shown, this utility model discloses an exhaust fan motor, which includes: a front cover 1, a rear cover 2, a motor shaft 3, a rotor, and a stator 4. The stator 4 is rotatably connected to the rotor. The motor shaft 3 is mounted on the rotor and passes through the front cover 1. The motor shaft 3 rotates synchronously with the rotor. The above structure belongs to the prior art and will not be described in detail here.

[0029] The stator 4 is exposed and clamped between the front cover 1 and the rear cover 2. The stator 4 adopts an exposed design, which has a good heat dissipation effect.

[0030] The stator 4 has a positioning groove 5 on its outer wall. The front cover 1 and the rear cover 2 have positioning protrusions 6 on their inner walls that correspond to the positioning groove 5. The front cover 1 has a first lug 7 and the rear cover 2 has a second lug 8. The second lug 8 and the first lug 7 are connected by a fixing member. The fixing member is an end screw 9. The first lug 7 has a through hole corresponding to the end screw 9 and the second lug 8 has a screw hole corresponding to the end screw 9.

[0031] Align the positioning protrusion 6 with the positioning groove 5 to quickly position the front cover 1 and the rear cover 2 at both ends of the stator 4. The operation is simple and the assembly efficiency is high. Then, the end screw 9 passes through the first lug 7 and is screwed and fixed to the second lug 8, so that the first lug 7 and the second lug 8 are connected as one unit. This restricts the relative movement between the front cover 1 and the rear cover 2, so that the front cover 1 and the rear cover 2 can clamp the stator 4 together and are not easy to fall apart. There will be no relative rotation between the front cover 1, the rear cover 2 and the stator 4, resulting in high assembly stability. Loosening the end screw 9 can separate the front cover 1 and the rear cover 2, which can be installed and used immediately, which is flexible and convenient.

[0032] The rear end cover 2 is connected to a mounting bracket 10. The mounting bracket 10 includes a central block 11 and an L-shaped clamping arm 12. The L-shaped clamping arm 12 is distributed circumferentially on the central block 11. The inner side of the L-shaped clamping arm 12 is provided with a shock-absorbing pad 13. The shock-absorbing pad can be made of rubber and has a certain elasticity. The shock-absorbing pad 13 abuts against the outer wall of the rear end cover 2.

[0033] The shock-absorbing pad 13 can buffer the mechanical vibration generated during the operation of the motor, reduce vibration transmission, and prevent the exhaust fan from making abnormal noise; the L-shaped clamping arm 12 contacts the rear end cover 2 through the shock-absorbing pad 13, so that the L-shaped clamping arm 12 distributed around the rear end cover 2 clamps the motor, which plays a limiting role, prevents the motor from shaking radially, and improves the stability of the motor.

[0034] The rear end cover 2 is provided with a threaded post 14, the threaded post 14 is provided with a positioning ring 15, the L-shaped clamping arm 12 is provided with a positioning through hole 16 corresponding to the positioning ring 15, and a locking cap 17 is connected to the threaded post 14.

[0035] During installation, the positioning through hole 16 is fitted over the positioning ring 15 to quickly position the L-shaped clamping arm 12 on the rear end cover 2. Then, the locking cap 17 is installed on the threaded post 14 to press the L-shaped clamping arm 12, so that the L-shaped clamping arm 12 is attached to the back of the rear end cover 2, preventing the L-shaped clamping arm 12 from freely detaching from the threaded post 14. This achieves the limitation and fixation of the mounting bracket 10 on the rear end cover 2, forming a whole that is stable and reliable.

[0036] One end of the threaded post 14 is provided with a threaded extension end 18, and the back of the rear end cover 2 is provided with a thickened plate 19. The thickened plate 19 is provided with a threaded hole 20 that is screwed into the threaded extension end 18. The threaded post 14 is easy to install and disassemble, and can be used immediately. The thickened plate 19 improves the surface structural strength of the rear end cover 2 and increases the depth of the threaded hole 20, which can be connected with the threaded extension end 18 with a sufficiently long length, thereby improving the installation strength of the threaded post 14.

[0037] One end of the L-shaped clamping arm 12 is provided with an outer extension section 21. The outer extension section 21 is provided with a countersunk hole 22 for bolts to pass through. Bolts are driven into the countersunk hole 22 to fix the L-shaped clamping arm 12 in the designated installation position inside the exhaust fan housing, making installation convenient.

[0038] Both the front cover 1 and the rear cover 2 are provided with heat dissipation grooves 23, which facilitate axial airflow, carry away the heat inside the stator 4, and improve heat dissipation efficiency.

[0039] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. An exhaust fan motor, comprising: Front cover, stator and rear cover, Its features are: The stator is exposed and clamped between the front end cover and the rear end cover; The rear end cover is connected to a mounting bracket, which includes a central block and L-shaped clamping arms. The L-shaped clamping arms are circumferentially distributed on the central block, and shock-absorbing pads are provided on the inner side of the L-shaped clamping arms. The shock-absorbing pads abut against the outer wall of the rear end cover.

2. The exhaust fan motor according to claim 1, characterized in that: The rear end cover is provided with a threaded post, and the threaded post is provided with a positioning ring. The L-shaped clamping arm is provided with a positioning through hole corresponding to the positioning ring. A locking cap is connected to the threaded post. The locking cap cooperates with the back of the rear end cover to clamp the L-shaped clamping arm, so that the mounting bracket is fixed on the rear end cover.

3. The exhaust fan motor according to claim 2, characterized in that: The threaded post has a threaded extension end, and the back of the rear end cover has a threaded hole that is screwed into the threaded extension end.

4. The exhaust fan motor according to claim 3, characterized in that: The back of the rear end cover is provided with a thickened plate, and the threaded hole is provided on the thickened plate.

5. The exhaust fan motor according to claim 1, characterized in that: The front end cover is provided with a first ear block, and the rear end cover is provided with a second ear block. A fixing member connects the second ear block and the first ear block.

6. The exhaust fan motor according to claim 1, characterized in that: The stator has a positioning groove on its outer wall, and the front end cover and the rear end cover have positioning protrusions on their inner walls that correspond to the positioning groove.

7. The exhaust fan motor according to claim 1, characterized in that: Both the front cover and the rear cover are provided with heat dissipation slots.

8. The exhaust fan motor according to claim 1, characterized in that: The L-shaped clamping arm has an outer extension section, and the outer extension section has a countersunk hole for bolts to pass through.

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