Suspension type shock absorption and noise reduction fan

Abstract

The utility model relates to a suspension type shock absorption and noise reduction fan. The brushless motor solves the problem that a brushless motor in the prior art easily causes resonance of a mounting frame body and causes loud noise. The fan shell comprises a fan shell body and a motor shell body, a positioning plate is arranged between the fan shell body and the motor shell body, the fan shell body and the motor shell body are installed on the two sides of the positioning plate in a suspended mode, a damping assembly is arranged on the motor shell body, and the fan shell body is connected with the positioning plate through a flexible connecting mechanism. The motor rotor has the advantages that rigid collision between the motor and the rotor during vibration is effectively reduced, so that the purposes of shock absorption and noise reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically to a suspended vibration damping and noise reduction fan. Background Technology

[0002] Brushed motors change the direction of current in the input coil through the mechanical friction of the commutator and brushes. Their speed is relatively easy to control, but the mechanical friction between the brushes and commutator accelerates brush wear and generates significant noise. Brushless DC motors, on the other hand, use electronic commutators instead of brushes and commutators. They combine the advantages of AC motors (simple structure, reliable operation, and easy maintenance) with the advantages of DC motors (high efficiency, good speed regulation, and low noise). Therefore, brushless DC motors are widely used in various fields, including home appliances. Existing brushless DC motors typically have a motor housing, enclosing the stator assembly. During operation, the temperature of the stator coils continuously rises, while the heat dissipation effect of the motor housing is limited, thus significantly limiting the motor's performance. Furthermore, the high speed and vibration frequency of existing brushless motors during use can easily cause the mounting bracket to vibrate, generating significant noise and affecting the user experience.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a brushless DC motor [CN201710665390.8], which includes a rotor assembly, including a shaft and a rotor sleeved on the shaft; a stator assembly, arranged around the rotor, the rotor and the stator assembly being rotatable relative to each other, the two ends of the shaft extending beyond the stator assembly; a first end cover and a second end cover, respectively located at the two ends of the stator assembly, the shaft passing through the first end cover and the second end cover, the first end cover and the second end cover being fixed together by fasteners, the stator assembly being clamped and fixed between the first end cover and the second end cover; and a drive plate, mounted and fixed on the side of the first end cover opposite to the stator assembly.

[0004] The above solution has solved the problem of poor heat dissipation of brushless motors in the prior art to a certain extent. However, the solution still has many shortcomings. For example, when the brushless motor is in use, the high speed and high vibration frequency can easily cause the mounting bracket in contact with it to shake, generate a lot of noise, and affect the user experience. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a suspended vibration-damping and noise-reducing fan.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a suspended vibration damping and noise reduction fan, comprising a fan housing and a motor housing, a positioning plate provided between the fan housing and the motor housing, the fan housing and the motor housing being suspended on both sides of the positioning plate, a vibration damping component provided on the motor housing, and the fan housing being connected to the positioning plate through a flexible connection mechanism.

[0007] In the aforementioned suspended vibration damping and noise reduction fan, the fan casing is composed of two fan half-shells. The two fan half-shells are connected circumferentially by connecting buckles, and the outer circumferential wall of the fan half-shell near the positioning plate is provided with a connecting groove, and a rubber connecting liner is provided in the connecting groove.

[0008] In the aforementioned suspended vibration damping and noise reduction fan, the flexible connection mechanism includes several fixing holes set on the positioning plate and corresponding to the connecting slots. The connecting slots and fixing holes are connected by connecting screws, and an I-shaped rubber vibration damping sleeve is fitted at the contact point between the connecting screws and the positioning plate.

[0009] In the aforementioned suspended vibration damping and noise reduction fan, the positioning plate has a clearance through hole at its center, and an annular rubber pad is provided around the clearance through hole.

[0010] In the aforementioned suspended vibration damping and noise reduction fan, a rotor assembly is provided inside the fan casing, and the rotor assembly is driven by a DC motor installed inside the motor casing.

[0011] In the aforementioned suspended vibration damping and noise reduction fan, the vibration damping component includes a motor positioning frame centrally located within the motor housing. One end of the motor positioning frame is fixedly connected to the inner wall of the motor housing, and the other end of the motor positioning frame is connected to the end of the DC motor, thereby keeping the DC motor suspended within the motor positioning frame.

[0012] In the aforementioned suspended vibration damping and noise reduction fan, a flexible rubber pad is provided between the motor housing and one side of the positioning plate, and the motor housing, the flexible rubber pad, and the positioning plate are provided with connecting through holes located on the same axis.

[0013] In the aforementioned suspended vibration damping and noise reduction fan, the motor positioning frame is arranged in an I-shape and has sound insulation covers on both sides.

[0014] In the aforementioned suspended vibration damping and noise reduction fan, a rear rubber gasket is provided at the end where the DC motor is connected to the motor housing, and a front rubber gasket is provided at the end where the DC motor is connected to the motor positioning frame.

[0015] In the aforementioned suspended vibration damping and noise reduction fan, a sound-absorbing pad is provided at the output end where the DC motor and rotor assembly are connected.

[0016] Compared with the prior art, the advantages of this utility model are: by setting a positioning plate between the DC motor and the rotor assembly, and by using a shock-absorbing component to keep the DC motor in a suspended state, and by using a flexible connection mechanism to suspend and fix the rotor assembly on the other side of the positioning plate, the rigid collision during vibration is reduced through flexible connection and suspension positioning, thereby achieving the purpose of shock reduction and noise reduction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the flexible connection mechanism in this utility model;

[0019] Figure 3 This is a schematic diagram of the motor positioning frame arrangement in this utility model;

[0020] Figure 4 This is a schematic diagram of the arrangement of the front rubber gasket in this utility model;

[0021] In the diagram: 1. Fan housing; 11. Fan half-housing; 12. Connecting buckle; 13. Connecting slot; 14. Rubber connecting liner; 2. Motor housing; 3. Positioning plate; 4. Vibration damping assembly; 41. Motor positioning frame; 42. Flexible rubber pad; 43. Connecting through hole; 44. Sound insulation cover; 45. Rear rubber pad; 46. Front rubber pad; 47. Noise-absorbing pad; 58. Flexible connecting mechanism; 59. Fixing hole; 51. Connecting screw; 52. Rubber vibration damping sleeve; 53. Clearance through hole; 54. Annular rubber pad; 55. Rotor assembly; 6. DC motor; 7. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] like Figure 1-4 As shown, a suspended vibration damping and noise reduction fan includes a fan housing 1 and a motor housing 2. A positioning plate 3 is provided between the fan housing 1 and the motor housing 2. The fan housing 1 and the motor housing 2 are suspended on both sides of the positioning plate 3. A vibration damping component 4 is provided on the motor housing 2, and the fan housing 1 is connected to the positioning plate 3 through a flexible connection mechanism 5.

[0024] The fan housing 1 is composed of two fan half-housings 11. The two fan half-housings 11 are connected circumferentially by connecting buckles 12. The fan half-housing 11 near the positioning plate 3 has a connecting groove 13 on its outer circumferential wall. A rubber connecting liner 14 is provided in the connecting groove 13.

[0025] The rubber connecting liner 14 is used to reduce the transmission of vibrations generated when the fan casing 1 vibrates.

[0026] As can be seen, the flexible connection mechanism 5 includes a number of fixing holes 51 disposed on the positioning plate 3 and corresponding to the connecting slot 13. The connecting slot 13 and the fixing holes 51 are connected by a connecting screw 52. A rubber shock-absorbing sleeve 53 in the shape of an I-beam is sleeved at the contact point between the connecting screw 52 and the positioning plate 3.

[0027] Using rubber damping sleeves 53 avoids rigid collisions between the fan housing 1 and the positioning plate 3, thereby reducing noise and vibration.

[0028] Furthermore, the positioning plate 3 has a clearance through hole 54 at its center, and an annular rubber pad 55 is provided around the clearance through hole 54.

[0029] The annular rubber pad 55 is used to flexibly wrap the circumference of the clearance through hole to prevent vibration contact of the fan housing 1.

[0030] Furthermore, the fan housing 1 is equipped with a rotor assembly 6, which is driven by a DC motor 7 installed in the motor housing 2.

[0031] Specifically, the shock absorption assembly 4 includes a motor positioning frame 41 centrally located inside the motor housing 2. One end of the motor positioning frame is fixedly connected to the inner wall of the motor housing 2, and the other end of the motor positioning frame 41 is connected to the end of the DC motor 7, thereby keeping the DC motor 7 suspended inside the motor positioning frame 41.

[0032] The shock absorption component 4 keeps the DC motor 7 in a suspended state, reduces the contact area with the motor housing 2, and reduces the transmission of vibration force when the DC motor is working.

[0033] More specifically, a flexible rubber pad 42 is provided between the motor housing 2 and one side of the positioning plate 3, and the motor housing 2, the flexible rubber pad 42 and the positioning plate 3 are provided with connecting through holes 43 located on the same axis.

[0034] The flexible rubber pad 42 is used to prevent rigid vibration collisions between the motor housing 2 and the positioning plate 3.

[0035] In detail, the motor positioning frame 41 is arranged in an I-shape and has sound insulation covers 44 on both sides.

[0036] Sound-absorbing cotton is installed on the inside of the soundproof cover plate 44 to reduce the noise of the DC motor 7.

[0037] Preferably, the end of the DC motor 7 connected to the motor housing 2 is provided with a rear rubber gasket 45, and the end of the DC motor 7 connected to the motor positioning frame 41 is provided with a front rubber gasket 46.

[0038] The rear rubber pad 45 and the front rubber pad 46 are provided to handle the linkage vibration generated when the DC motor 7 is working.

[0039] In addition, a noise-absorbing pad 47 is provided at the output end where the DC motor 7 is connected to the rotor assembly 6.

[0040] In summary, the principle of this embodiment is as follows: by setting a positioning plate 3 between the DC motor 7 and the rotor assembly 6, and using the motor positioning frame 41 to suspend and position the DC motor 7 in the motor housing, and using a flexible connection for positioning, the DC motor 7 is ensured to reduce vibration transmission during operation. Secondly, the flexible connection mechanism 5 is used to position the fan housing, thereby reducing the vibration generated by the rotor assembly 6 during operation.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0042] Although this document frequently uses terms such as fan housing 1, fan half-housing 11, connecting buckle 12, connecting slot 13, rubber connecting liner 14, motor housing 2, positioning plate 3, shock absorption assembly 4, motor positioning frame 41, flexible rubber pad 42, connecting through hole 43, sound insulation cover 44, rear rubber pad 45, front rubber pad 46, sound-absorbing pad 47, flexible connection mechanism 5, fixing hole 51, connecting screw 52, ​​rubber vibration damping sleeve 53, clearance through hole 54, annular rubber pad 55, rotor assembly 6, and DC motor 7, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A suspended vibration damping and noise reduction fan, comprising a fan housing (1) and a motor housing (2), characterized in that, A positioning plate (3) is provided between the fan housing (1) and the motor housing (2). The fan housing (1) and the motor housing (2) are suspended on both sides of the positioning plate (3). A shock-absorbing component (4) is provided on the motor housing (2), and the fan housing (1) is connected to the positioning plate (3) through a flexible connection mechanism (5).

2. The suspended vibration damping and noise reduction fan according to claim 1, characterized in that, The fan housing (1) is composed of two fan half-housings (11). The two fan half-housings (11) are connected circumferentially by connecting buckles (12), and the fan half-housing (11) near the positioning plate (3) has a connecting groove (13) on its outer circumferential wall. A rubber connecting liner (14) is provided in the connecting groove (13).

3. A suspended vibration damping and noise reduction fan according to claim 2, characterized in that, The flexible connection mechanism (5) includes several fixing holes (51) set on the positioning plate (3) and corresponding to the connecting slot (13). The connecting slot (13) and the fixing holes (51) are connected by a connecting screw (52). A rubber shock-absorbing sleeve (53) in the shape of an I-beam is sleeved at the contact point between the connecting screw (52) and the positioning plate (3).

4. A suspended vibration damping and noise reduction fan according to claim 1, characterized in that, The positioning plate (3) is provided with a clearance through hole (54) at its center, and the clearance through hole (54) is provided with an annular rubber pad (55) around its circumference.

5. A suspended vibration damping and noise reduction fan according to claim 4, characterized in that, The fan housing (1) is provided with a rotor assembly (6), which is driven by a DC motor (7) provided in the motor housing (2).

6. A suspended vibration damping and noise reduction fan according to claim 5, characterized in that, The shock absorption assembly (4) includes a motor positioning frame (41) centrally located inside the motor housing (2). One end of the motor positioning frame is fixedly connected to the inner wall of the motor housing (2), and the other end of the motor positioning frame (41) is connected to the end of the DC motor (7), thereby keeping the DC motor (7) suspended inside the motor positioning frame (41).

7. A suspended vibration damping and noise reduction fan according to claim 6, characterized in that, A flexible rubber pad (42) is provided between the motor housing (2) and one side of the positioning plate (3), and the motor housing (2), the flexible rubber pad (42) and the positioning plate (3) are provided with connecting through holes (43) located on the same axis.

8. A suspended vibration damping and noise reduction fan according to claim 6, characterized in that, The motor positioning frame (41) is I-shaped and has soundproof covers (44) on both sides.

9. A suspended vibration damping and noise reduction fan according to claim 8, characterized in that, The DC motor (7) is provided with a rear rubber gasket (45) at one end connected to the motor housing (2), and a front rubber gasket (46) at the other end connected to the motor positioning frame (41).

10. A suspended vibration damping and noise reduction fan according to claim 9, characterized in that, The output end of the DC motor (7) connected to the rotor assembly (6) is provided with a sound-absorbing pad (47).

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