Motor structure with shielding and anti-interference functions

Abstract

The utility model discloses a shielding anti-interference motor structure, which comprises a casing, a cover and a rotor shaft, the rotor shaft is arranged in the middle of the casing in a penetrating manner, the rotor shaft is connected with the casing and the cover through bearings, the periphery of the inner wall of the casing is connected with a stator through a sealing compound, and the stator is connected with the casing through a sealing compound. And a damping mechanism is arranged on one side of the stator and comprises a fixed cylinder, a movable cylinder, a connecting rod, a limiting groove, a supporting spring and a damping pad, the outer wall of the machine shell is sleeved with an anti-interference cover, and a filter is arranged on one side of the anti-interference cover. The damping mechanism is adopted to achieve damping and noise reduction effects, so that external interference caused by overlarge noise due to vibration generated during operation of the motor is avoided, and influence on the service life of the motor due to looseness of parts in the motor due to long-time vibration is avoided; the anti-interference cover and the filter are matched to shield the interference caused by the circuit and the complex magnetic field environment, so that the shielding and anti-interference functions of the motor are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor structure with shielding and anti-interference functions. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil to generate a rotating magnetic field and acts on the rotor to form a magneto-electrical rotation torque. Motors are divided into DC motors and AC motors according to the power supply used. The application number CN202311733987.3 is retrieved. It is a motor structure that is easy to dissipate heat. This invention effectively reduces the friction when the airflow passes through the gap between the rotor and the stator, and effectively reduces the impact of the cooling airflow on the rotor speed and the motor output power.

[0003] Similar to the above-mentioned motor structure that is easy to dissipate heat: Although it is fixed on the rear cover through the air cooling component, it effectively reduces the influence of cooling airflow on the rotor speed and motor output power, but firstly, the electromagnetic radiation emitted by the motor itself will interfere with the normal operation and use of other equipment or systems, and the electromagnetic radiation emitted by other electrical appliances will also interfere with the normal use of the motor. Secondly, the vibration generated during the operation of the motor can easily cause excessive noise and interfere with the outside. At the same time, long-term vibration can easily loosen the internal parts of the motor and affect the service life of the motor.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a motor structure with shielding and anti-interference is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a motor structure with shielding and anti-interference, so as to solve the above-mentioned motor structure for heat dissipation proposed in the above-mentioned background technology. First, the electromagnetic radiation emitted by the motor itself will interfere with the normal operation and use of other equipment or systems, and the electromagnetic radiation emitted by other electrical appliances will also interfere with the normal use of the motor. Secondly, the vibration generated during the operation of the motor can easily cause excessive noise and interfere with the outside. At the same time, long-term vibration can easily loosen the internal parts of the motor and thus affect the service life of the motor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor structure with shielding and anti-interference, including a casing, a cover and a rotor shaft, one side of the casing is connected to the cover by a fixing bolt, the rotor shaft is arranged through the middle of the casing, the rotor shaft is connected to the casing and the cover by bearings, the middle outer wall of the rotor shaft is connected to the rotor, and the inner wall of the casing is connected to the stator by sealing glue.

[0007] Furthermore, an outer wall of the casing on one side away from the cover is connected to a heat dissipation cover by bolts, an end of the rotor shaft away from the cover passes through the casing and extends to the middle of the heat dissipation cover and is connected to a cooling fan, the rotor shaft and the heat dissipation cover are connected by a bearing, an outer wall of the heat dissipation cover is arranged with air inlet holes, and an outer wall of the casing on one side close to the heat dissipation cover is arranged with heat dissipation holes.

[0008] Furthermore, a shock absorbing mechanism is arranged on one side of the stator, and the shock absorbing mechanism includes a fixed cylinder, a movable cylinder, a connecting rod, a limit groove, a support spring and a damping pad. A movable cylinder is arranged on the side of the fixed cylinder close to the rotor shaft, and the movable cylinder is arranged opposite to the fixed cylinder. Connecting rods are arranged on the opposite sides of the fixed cylinder and the movable cylinder.

[0009] Furthermore, a limiting groove is provided on one side of the connecting rod, and a supporting spring is connected to the inner wall of the limiting groove. The two groups of connecting rods are respectively embedded in the relative limiting grooves, and one end of the supporting spring is abutted against the connecting rod. Damping pads are provided in the middle of the opposite sides of the two groups of connecting rods, and the two groups of damping pads are abutted against each other.

[0010] Furthermore, an arc-shaped pressure plate is connected to one end of the movable cylinder away from the fixed cylinder, and the arc-shaped pressure plate is connected to the rotor shaft through a ball bearing. An anti-interference cover is provided on the outer wall of the casing, and a sound insulation layer is provided on the inner wall of the anti-interference cover.

[0011] Furthermore, a filter is provided on one side of the anti-interference cover, the bottom end of the anti-interference cover is connected to a fixed support frame, and the bottom end of the fixed support frame is connected to a mounting plate via bolts.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a motor structure with shielding and anti-interference, using a shock-absorbing mechanism to achieve shock absorption and noise reduction, avoiding vibration during motor operation that causes excessive noise and interferes with the outside, and avoiding long-term vibration that causes the internal parts of the motor to loosen and thus affect the service life of the motor, using an anti-interference cover and a filter to cooperate with the shielding circuit and the interference caused by the complex magnetic field environment, thereby achieving the shielding and anti-interference function of the motor, the specific contents are as follows:

[0013] A shock absorbing mechanism is arranged on one side of the stator. The shock absorbing and noise reducing functions of the shock absorbing mechanism prevent the vibration generated during the operation of the motor from causing excessive noise and interfering with the outside, and at the same time prevent long-term vibration from causing the internal parts of the motor to loosen, thereby affecting the service life of the motor. The shock absorbing mechanism includes a fixed cylinder, a movable cylinder, a connecting rod, a limit groove, a support spring and a damping pad. When the motor is running, the vibration of the rotor shaft drives the movable cylinder to move toward the fixed cylinder, and the two sets of connecting rods translate into the corresponding limit grooves. The movement of the connecting rod pushes the support spring to be compressed and contracted, thereby playing a role of buffering and shock absorbing. The mutual friction generated by the movement of the two sets of damping pads plays a role A certain damping effect is provided to avoid the impact force generated by the rebound of the support spring after shock absorption, thereby reducing the vibration of the motor during operation, thereby reducing the noise of the motor and increasing the service life of the motor. The outer wall of the casing is provided with an anti-interference cover, which is a shielding shell for suppressing the radiation and conduction of electromagnetic waves and the noise current caused by high-order harmonics. The inner wall of the anti-interference cover is provided with a sound insulation layer, which can further isolate the noise generated by the operation of the motor. A filter is provided on one side of the anti-interference cover, and the anti-interference cover and the filter cooperate to shield the interference caused by the circuit and the complex magnetic field environment, thereby realizing the shielding and anti-interference function of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a motor structure with shielding and anti-interference according to the utility model;

[0015] Figure 2 This is a schematic diagram of a motor structure ball bearing with shielding and anti-interference function according to the utility model;

[0016] Figure 3 This is a schematic diagram of the front view of a motor structure with shielding and anti-interference function according to the utility model;

[0017] Figure 4 The utility model is a schematic diagram of a shock absorbing mechanism of a motor structure with shielding and anti-interference.

[0018] In the figure: 1. casing; 2. cover; 3. rotor shaft; 4. rotor; 5. stator; 6. sealing glue; 7. heat dissipation cover; 8. cooling fan; 9. air inlet; 10. heat dissipation port; 11. shock absorbing mechanism; 12. No. 1 fixing cylinder; 13. No. 2 fixing cylinder; 14. telescopic rod; 15. movable groove; 16. spring; 17. damping pad; 18. arc pressure plate; 19. ball bearing; 20. anti-interference cover; 21. filter; 22. fixed support frame; 23. mounting plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 - Figure 4 The utility model provides a technical solution: a motor structure with shielding and anti-interference, including a casing 1, a cover 2 and a rotor shaft 3. One side of the casing 1 is connected to the cover 2 by fixing bolts, and the cover 2 plays a role in protecting the motor. The rotor shaft 3 is arranged through the middle of the casing 1, and the rotor shaft 3 plays a driving role. The rotor shaft 3 is connected to the casing 1 and the cover 2 by bearings. The middle outer wall of the rotor shaft 3 is connected with a rotor 4, and the inner wall of the casing 1 is connected with a stator 5 by sealing glue 6. The stator 5 has the functions of fixing the rotor 4 and generating a magnetic field. The rotor 4 rotates inside the stator 5 and interacts with the stator 5 through the magnetic field, thereby transferring energy. The magnetic field on the rotor 4 interacts with the magnetic field on the stator 5 to generate torque, so that the motor rotates.

[0021] The outer wall of the casing 1 on one side away from the cover 2 is connected with a heat dissipation cover 7 by bolts, and the heat dissipation cover 7 plays a heat dissipation role. The end of the rotor shaft 3 away from the cover 2 passes through the casing 1 and extends to the middle of the heat dissipation cover 7, and is connected with a heat dissipation fan 8. The rotation of the rotor shaft 3 drives the heat dissipation fan 8 to rotate synchronously, so that the cool air from the outside is transmitted to the heat dissipation holes 10 through the air inlet holes 9, thereby achieving the cooling effect on the motor and avoiding the motor from malfunctioning due to excessive temperature during operation. The rotor shaft 3 is connected to the heat dissipation cover 7 through a bearing, and the outer wall of the heat dissipation cover 7 is arranged with air inlet holes 9, and the outer wall of the casing 1 on one side close to the heat dissipation cover 7 is arranged with heat dissipation holes 10, and the air inlet holes 9 and the heat dissipation holes 10 play a role in auxiliary heat dissipation.

[0022] A shock absorbing mechanism 11 is arranged on one side of the stator 5. The shock absorbing and noise reducing functions of the shock absorbing mechanism 11 prevent vibration during the operation of the motor from causing excessive noise and interfering with the outside, and at the same time prevent long-term vibration from loosening the internal parts of the motor and affecting the service life of the motor. The shock absorbing mechanism 11 includes a fixed cylinder 12, a movable cylinder 13, a connecting rod 14, a limiting groove 15, a support spring 16 and a damping pad 17. The movable cylinder 13 is arranged on the side of the fixed cylinder 12 close to the rotor shaft 3. The movable cylinder 13 is arranged opposite to the fixed cylinder 12, and connecting rods 14 are arranged on the opposite sides of the fixed cylinder 12 and the movable cylinder 13.

[0023] A limiting groove 15 is provided on one side of the connecting rod 14, and the limiting groove 15 plays a limiting role. The inner wall of the limiting groove 15 is connected with a supporting spring 16, and the supporting spring 16 plays a shock absorbing role and shrinks under pressure. The two groups of connecting rods 14 are respectively embedded in the relative limiting grooves 15, and one end of the supporting spring 16 abuts against the connecting rod 14. Damping pads 17 are provided in the middle of the opposite side of the two groups of connecting rods 14, and the two groups of damping pads 17 abut against each other. When the motor is running, the vibration of the rotor shaft 3 drives the movable cylinder 13 to move toward the fixed cylinder 12, and the two groups of connecting rods 14 translate into the corresponding limiting grooves 15. The movement of the connecting rod 14 pushes the supporting spring 16 to shrink under pressure, thereby playing a role of buffering and shock absorbing. The mutual friction force generated by the movement of the two groups of damping pads 17 plays a certain damping role, thereby avoiding the impact force generated by the rebound of the supporting spring 16 after shock absorption, thereby reducing the vibration of the motor during operation, thereby reducing the noise of the motor and increasing the operating life of the motor.

[0024] An arc-shaped pressure plate 18 is connected to one end of the movable cylinder 13 away from the fixed cylinder 12. The arc-shaped pressure plate 18 plays a connecting role so that the shock absorbing mechanism 11 is always in contact with the ball bearing 19 on the outer wall of the rotor shaft 3. The arc-shaped pressure plate 18 and the rotor shaft 3 are connected through the ball bearing 19. The outer wall of the casing 1 is provided with an anti-interference cover 20. The anti-interference cover 20 is a shielding shell for suppressing the radiation and conduction of electromagnetic waves and the noise current caused by high-order harmonics. The inner wall of the anti-interference cover 20 is provided with a sound insulation layer 201, which can further isolate the noise generated by the operation of the motor.

[0025] A filter 21 is provided on one side of the anti-interference cover 20. The filter 21 allows specific frequency components in the signal to pass through, while greatly attenuating other frequency components. By utilizing the frequency selection function of the filter, interference noise can be filtered out or spectrum analysis can be performed. The anti-interference cover 20 and the filter 21 cooperate to shield the interference caused by the circuit and the complex magnetic field environment, thereby realizing the shielding and anti-interference function of the motor. The bottom end of the anti-interference cover 20 is connected to a fixed support frame 22, and the fixed support frame 22 plays a fixed support role. The bottom end of the fixed support frame 22 is connected to a mounting plate 23 by bolts, and the mounting plate 23 can be fixedly installed by bolts to facilitate the fixed installation of the motor.

[0026] Working principle: When using a motor structure with shielding and anti-interference, the mounting plate 23 can be fixedly installed by bolts to facilitate the fixed installation of the motor. The magnetic field interacts with the stator 5 to transfer energy. The magnetic field on the rotor 4 interacts with the magnetic field on the stator 5 to generate torque, causing the motor to rotate. The rotation of the rotor shaft 3 drives the cooling fan 8 to rotate synchronously, so that the cool air from the outside is transmitted to the heat dissipation hole 10 through the air inlet hole 9, thereby achieving the cooling effect on the motor and avoiding the motor from malfunctioning due to excessive temperature during operation. The air inlet hole 9 and the heat dissipation hole 10 play a role in auxiliary heat dissipation. When the motor is running, the rotor shaft 3 vibrates and drives the movable cylinder 13 to The fixed cylinder 12 moves in the direction of the fixed cylinder 12, and the two groups of connecting rods 14 translate into the corresponding limit grooves 15. The movement of the connecting rods 14 pushes the support springs 16 to be compressed and contracted, thereby playing a role in buffering and shock absorption. The mutual friction generated by the movement of the two groups of damping pads 17 plays a certain damping role, thereby avoiding the impact force generated by the rebound of the support springs 16 after shock absorption, thereby reducing the vibration of the motor during operation, thereby reducing the noise of the motor and increasing the service life of the motor. The sound insulation layer 201 can further isolate the noise generated by the operation of the motor. The anti-interference cover 20 and the filter 21 cooperate to shield the interference caused by the circuit and the complex magnetic field environment, thereby realizing the shielding and anti-interference function of the motor.

Claims

1. A motor structure with shielding and anti-interference, comprising a housing (1), a cover (2) and a rotor shaft (3), characterized in that: One side of the casing (1) is connected to the cover (2) via fixing bolts, the rotor shaft (3) is arranged through the middle of the casing (1), the rotor shaft (3) is connected to the casing (1) and the cover (2) via bearings, the middle outer wall of the rotor shaft (3) is connected to the rotor (4), and the inner wall of the casing (1) is connected to the stator (5) via sealing glue (6).

2. The motor structure with shielding and anti-interference according to claim 1, characterized in that: The outer wall of the casing (1) on one side away from the cover (2) is connected to a heat dissipation cover (7) by bolts; the end of the rotor shaft (3) away from the cover (2) passes through the casing (1) and extends to the middle of the heat dissipation cover (7) and is connected to a heat dissipation fan (8); the rotor shaft (3) and the heat dissipation cover (7) are connected by a bearing; the outer wall of the heat dissipation cover (7) is arranged with air inlet holes (9); and the outer wall of the casing (1) on one side close to the heat dissipation cover (7) is arranged with heat dissipation holes (10).

3. The motor structure with shielding and anti-interference according to claim 1, characterized in that: A shock absorbing mechanism (11) is arranged on one side of the stator (5), and the shock absorbing mechanism (11) comprises a fixed cylinder (12), a movable cylinder (13), a connecting rod (14), a limiting groove (15), a supporting spring (16) and a damping pad (17). The movable cylinder (13) is arranged on the side of the fixed cylinder (12) close to the rotor shaft (3), the movable cylinder (13) is arranged opposite to the fixed cylinder (12), and the connecting rod (14) is arranged on the opposite side of the fixed cylinder (12) and the movable cylinder (13).

4. The motor structure with shielding and anti-interference according to claim 3, characterized in that: A limiting groove (15) is provided on one side of the connecting rod (14), and a support spring (16) is connected to the inner wall of the limiting groove (15). The two groups of connecting rods (14) are respectively embedded in the opposite limiting grooves (15), and one end of the support spring (16) is in contact with the connecting rod (14). Damping pads (17) are provided in the middle of the opposite sides of the two groups of connecting rods (14), and the two groups of damping pads (17) are in contact with each other.

5. The motor structure with shielding and anti-interference according to claim 3, characterized in that: An arc-shaped pressure plate (18) is connected to one end of the movable cylinder (13) away from the fixed cylinder (12); the arc-shaped pressure plate (18) is connected to the rotor shaft (3) via a ball bearing (19); an anti-interference cover (20) is sleeved on the outer wall of the casing (1); and a sound insulation layer (201) is provided on the inner wall of the anti-interference cover (20).

6. The motor structure with shielding and anti-interference according to claim 5, characterized in that: A filter (21) is provided on one side of the anti-interference cover (20), the bottom end of the anti-interference cover (20) is connected to a fixed support frame (22), and the bottom end of the fixed support frame (22) is connected to a mounting plate (23) via bolts.

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