Noise reduction device for low noise magneto

Abstract

This utility model belongs to the field of motor noise reduction, specifically a noise reduction and protection device for a low-noise magneto, including a magneto housing body and an outer connecting shell; a connecting ring is fixedly connected to the outer end of the outer connecting shell, and a noise reduction ring is fixedly connected to the inner cavity of the connecting ring; an assembly cavity is opened at the inner end of the magneto housing body; by setting a sound-absorbing layer inside the magneto housing body, the sound-absorbing layer is formed by sound-insulating materials such as glass fiber cotton, which allows the magneto housing body to form a fireproof and sound-absorbing structure on the outside of the motor structure, effectively reducing low-frequency to mid-frequency noise, and also has a certain heat insulation effect. Combined with the noise reduction ring made of polyurethane foam installed inside the connecting ring, the noise reduction ring can reduce the axial vibration noise of the motor's output shaft, improving the noise reduction performance of the entire protection device. This device, through a multi-layer sound insulation structure, improves the noise reduction effect of the noise reduction and protection device, making it more practical for the protection of magneto motors.

Description

Technical Field

[0001] This utility model relates to the field of motor noise reduction, specifically a noise reduction and protection device for a low-noise magneto. Background Technology

[0002] A magneto is a motor device that utilizes the conversion between magnetic fields and electrical energy. Magneto motors have applications in the automotive industry, home appliances, industrial automation, and other fields. Therefore, with the widespread use of magneto motors, the demand for their use is also increasing.

[0003] When existing magneto motors are in operation, they are prone to generating significant noise due to factors such as electromagnetic interference, mechanical resonance, and wind noise, which affects the operating environment and equipment stability. Without protection, the performance of the motor may be reduced. Therefore, a noise reduction and protection device for low-noise magneto motors is proposed to address the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, existing magneto motors are prone to generating significant noise during operation due to factors such as electromagnetic interference, mechanical resonance, and wind noise, which affects the operating environment and equipment stability. Without protection, the motor's performance may be reduced. This invention proposes a noise reduction and protection device for low-noise magneto motors.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a noise reduction and protection device for a low-noise magneto, including a magneto housing body and an outer connecting shell; a connecting ring is fixedly connected to the outer end of the outer connecting shell, a noise reduction ring is fixedly connected to the inner cavity of the connecting ring, an assembly cavity is opened at the inner end of the magneto housing body, a sound-absorbing layer is provided at the inner end of the assembly cavity, and a shock-absorbing layer is provided at the outer end of the sound-absorbing layer. By installing the noise reduction ring and the sound-absorbing layer, the device can be more practically used in the protection of magneto.

[0006] Preferably, a heat-conducting layer is provided at the outer end of the shock-absorbing layer. By providing a shock-absorbing layer and a heat-conducting layer, and with the shock-absorbing layer being made of materials such as butyl rubber, the functionality of the protective device can be further improved.

[0007] Preferably, an electromagnetic shielding layer is provided on the inner end of the assembly cavity near the inner wall of the magneto housing. By installing the electromagnetic shielding layer, the electromagnetic shielding effect of the noise reduction and protection device can be improved.

[0008] Preferably, an assembly block is fixedly connected to the outer end of the outer connecting shell. The assembly block is arranged in a ring shape. By installing the assembly block, it is easy to assemble and connect the outer connecting shell and the magneto housing body.

[0009] Preferably, the inner end of the outer connecting shell is provided with heat dissipation grooves, which are distributed in a ring shape. By installing heat dissipation grooves, the heat dissipation effect of the protective device is improved.

[0010] Preferably, a filter screen is installed at the inner end of the rear of the magneto housing, which further improves the heat dissipation effect of the device.

[0011] Preferably, a second noise-reducing ring is movably connected to the front side of the filter screen. The second noise-reducing ring is located at the inner end of the magneto housing body. By installing the second noise-reducing ring, a sound-absorbing and noise-reducing structure can also be formed inside the rear of the magneto housing body, further improving the noise reduction and protection effect of the magneto housing body.

[0012] Preferably, the outer end of the outer connecting shell is provided with a thermally conductive coating, which improves the thermal conductivity of the outer connecting shell.

[0013] The advantages of this utility model are: 1. This utility model, through the structural design of a noise-reducing ring and a sound-absorbing layer, has a sound-absorbing layer located inside the magneto housing body. The sound-absorbing layer is formed by sound-insulating materials such as glass fiber cotton. The sound-absorbing layer allows the magneto housing body to form a fireproof and sound-absorbing structure on the outside of the motor structure, effectively reducing low-frequency to mid-frequency noise, while also having a certain heat insulation effect. Combined with the noise-reducing ring made of polyurethane foam material installed inside the connecting ring, the noise-reducing ring can reduce the axial vibration noise of the motor's output shaft, improving the noise reduction performance of the entire protective device. This device, through a multi-layer sound insulation structure, improves the noise reduction effect of the noise reduction protective device, making it more practical for use in the protection of magneto motors. 2. This utility model, through the structural design of a shock-absorbing layer and a heat-conducting layer, the shock-absorbing layer is made of materials such as butyl rubber. The shock-absorbing layer can add shock absorption function on the basis of the sound-absorbing layer, and can also absorb structural vibration caused by high-speed operation of motor and suppress resonance noise. Combined with the heat-conducting layer for heat conduction, the functionality of the protective device can be further improved. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded cross-sectional view of the connecting ring of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the magneto housing body of this utility model; Figure 4 For the present utility model Figure 3 A magnified three-dimensional structural diagram at point A in the middle; Figure 5 This is an exploded three-dimensional structural diagram of the rear end portion of the magneto housing of this utility model.

[0016] In the diagram: 1. Magneto housing body; 2. Outer connecting shell; 3. Assembly block; 4. Heat dissipation groove; 5. Connecting ring; 6. Noise reduction ring one; 7. Assembly cavity; 8. Electromagnetic shielding layer; 9. Sound absorption layer; 10. Vibration damping layer; 11. Thermal conductive layer; 12. Filter screen; 13. Noise reduction ring two; 14. Thermal conductive coating. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0018] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. This application discloses a noise reduction and protection device for a low-noise magneto. (Refer to...) Figures 1-5 A noise reduction and protection device for a low-noise magneto includes a magneto housing body 1 and an outer connecting shell 2. A connecting ring 5 is fixedly connected to the outer end of the outer connecting shell 2, and a noise reduction ring 6 is fixedly connected to the inner cavity of the connecting ring 5. An assembly cavity 7 is opened at the inner end of the magneto housing body 1, and a sound-absorbing layer 9 is provided at the inner end of the assembly cavity 7. A vibration damping layer 10 is provided at the outer end of the sound-absorbing layer 9. By installing the noise reduction ring 6 and the sound-absorbing layer 9, the sound-absorbing layer 9 is located inside the magneto housing body 1 and is formed of sound-insulating materials such as glass fiber cotton. The sound-absorbing layer 9 allows the magneto housing body 1 to form a fireproof and sound-absorbing structure on the outside of the motor structure, effectively reducing low-frequency to mid-frequency noise, and also has a certain heat insulation effect. In conjunction with the noise reduction ring 6 made of polyurethane foam material installed inside the connecting ring 5, the noise reduction ring 6 can reduce the axial vibration noise of the motor's output shaft, improving the noise reduction performance of the entire protection device. This device improves the noise reduction effect of the noise reduction and protection device through a multi-layer sound insulation structure, making it more practical for the protection of magneto motors.

[0019] Reference Figure 3 and Figure 4A heat-conducting layer 11 is provided at the outer end of the damping layer 10. By setting the damping layer 10 and the heat-conducting layer 11, the damping layer 10 is made of materials such as butyl rubber. The damping layer 10 can add damping function on the basis of the sound-absorbing layer 9, and can also absorb the structural vibration caused by the high-speed operation of the motor and suppress resonance noise. In conjunction with the heat-conducting layer 11 for heat conduction, the functionality of the protective device can be further improved. Reference Figure 3 and Figure 4 An electromagnetic shielding layer 8 is provided on the inner end of the assembly cavity 7 near the inner wall of the magneto housing body 1. By installing the electromagnetic shielding layer 8, which is made of conductive fabric and conductive coating, an electromagnetic shielding protection layer can be formed to prevent magnetic field leakage and improve the electromagnetic shielding effect of the noise reduction and protection device. Reference Figure 1 An assembly block 3 is fixedly connected to the outer end of the outer connecting shell 2. The assembly block 3 is distributed in a ring. By installing the assembly block 3, the outer connecting shell 2 can have a connection assembly structure, so that the outer connecting shell 2 and the magneto shell body 1 can be easily assembled and connected. Reference Figure 1 The inner end of the outer connecting shell 2 is provided with heat dissipation grooves 4. The heat dissipation grooves 4 are distributed in a ring. By installing heat dissipation grooves 4, multiple heat dissipation grooves 4 can increase the heat dissipation effect of the outer connecting shell 2, which can help the heat dissipation to dissipate quickly. Good heat dissipation conditions can slow down the aging speed of internal electrical components and materials, thereby increasing the life of the entire magneto system and improving the heat dissipation effect of the protective device. Reference Figure 1 and Figure 5 A filter screen 12 is installed at the inner end of the rear of the magneto housing body 1. By installing the filter screen 12, the filter screen 12 can form a dustproof structure at the inner end of the heat dissipation port at the rear of the magneto housing body 1, so that the magneto housing body 1 can dissipate heat conveniently while reducing the intrusion of external dust and impurities, and further improving the heat dissipation effect of the device. Reference Figure 5 The front side of the filter screen 12 is movably connected to a noise reduction ring 13. The noise reduction ring 13 is located at the inner end of the magneto housing body 1. By installing the noise reduction ring 13, a sound-absorbing and noise-reducing structure can also be formed inside the rear of the magneto housing body 1, which further improves the noise reduction and protection effect of the magneto housing body 1. Reference Figure 1 The outer end of the outer connecting shell 2 is provided with a thermally conductive coating 14. By providing the thermally conductive coating 14, which is made of thermally conductive materials such as graphene, the thermal conductivity of the outer connecting shell 2 can be improved. Although the thermally conductive layer 11 is located outside the shock-absorbing layer 10 and does not directly contact the high-temperature source, it can receive the heat conducted from the inner layer through long-term heat accumulation, and achieve rapid lateral diffusion of heat with its high planar thermal conductivity. Combined with the heat dissipation grooves and thermally conductive coating on the outer connecting shell, the overall heat dissipation efficiency is improved.

[0020] Working principle: When in use, the device has an electromagnetic shielding layer 8, a sound-absorbing layer 9, a vibration damping layer 10, and a heat-conducting layer 11 arranged sequentially from the inner wall of the magneto housing 1 to the outside of the assembly cavity 7 inside the magneto housing 1. The sound-absorbing layer 9 is formed of sound-insulating materials such as glass fiber cotton. The sound-absorbing layer 9 allows the magneto housing 1 to form a fireproof and sound-absorbing structure on the outside of the motor structure, effectively reducing low-frequency to mid-frequency noise, and also has a certain heat insulation effect. Combined with the noise reduction ring 6 made of polyurethane foam, the noise reduction ring 6 can reduce the axial vibration noise of the motor output shaft and improve the noise reduction performance of the entire protective device.

[0021] The damping layer 10 is made of materials such as butyl rubber. The damping layer 10 can add damping function on the basis of the sound-absorbing layer 9. It can also absorb the structural vibration caused by the high-speed operation of the motor and suppress resonance noise. It works with the heat-conducting layer 11 to conduct heat. The electromagnetic shielding layer 8 is made of conductive fabric and conductive coating to form an electromagnetic shielding protection layer to prevent magnetic field leakage. The filter screen 12 can form a dustproof structure inside the heat dissipation port at the rear end of the magneto housing 1. This allows the magneto housing 1 to dissipate heat conveniently while reducing the intrusion of external dust and impurities, thus improving the practicality of the protective device in magneto.

[0022] The contents not described in detail in this specification do not improve upon this application and are all prior art known to those skilled in the art, and therefore are not described in detail.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A noise reduction and protection device for a low-noise magneto, characterized in that: It includes a magneto housing body (1) and an outer connecting shell (2); the outer end of the outer connecting shell (2) is fixedly connected to a connecting ring (5), the inner cavity of the connecting ring (5) is fixedly connected to a noise reduction ring (6), the inner end of the magneto housing body (1) is provided with an assembly cavity (7), the inner end of the assembly cavity (7) is provided with a sound-absorbing layer (9), and the outer end of the sound-absorbing layer (9) is provided with a shock-absorbing layer (10).

2. The noise reduction and protection device for a low-noise magneto according to claim 1, characterized in that: A heat-conducting layer (11) is provided at the outer end of the damping layer (10).

3. The noise reduction and protection device for a low-noise magneto according to claim 1, characterized in that: An electromagnetic shielding layer (8) is provided on the side of the inner end of the assembly cavity (7) near the inner wall of the magneto housing body (1).

4. The noise reduction and protection device for a low-noise magneto according to claim 1, characterized in that: The outer end of the outer connecting shell (2) is fixedly connected to an assembly block (3), which is distributed in a ring.

5. The noise reduction and protection device for a low-noise magneto according to claim 1, characterized in that: The inner end of the outer connecting shell (2) is provided with a heat dissipation groove (4), which is distributed in a ring.

6. The noise reduction and protection device for a low-noise magneto according to claim 5, characterized in that: A filter screen (12) is installed at the inner end of the rear of the magneto housing body (1).

7. The noise reduction and protection device for a low-noise magneto according to claim 6, characterized in that: The front side of the filter (12) is movably connected to a noise reduction ring two (13), which is located at the inner end of the magneto housing body (1).

8. The noise reduction and protection device for a low-noise magneto according to claim 1, characterized in that: The outer end of the outer connecting shell (2) is provided with a thermally conductive coating (14).

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