TWM611468U - Rotating paddle level switch device with inner wound Hall motor module - Google Patents

Abstract

This creation is an anti-rotation type material level switch device with an inner-wound Hall motor module. The Hall motor module of the anti-rotation material level switch device is arranged in the housing base, and includes a coil stator group, a magnet rotor group, a motor cover, a control circuit board and a Hall effect detector. The wire of the coil stator group is connected to the control circuit board. The magnet rotor group is arranged in the motor cover and the coil stator group surrounds the magnet rotor group. The Hall effect detector is arranged on the control circuit board and corresponds to the position of the magnet rotor group. The drive shaft group is combined with the motor cover and rotates with the magnet rotor group. The reduction gear module is driven by the drive shaft and is meshed and transmitted to the anti-rotation component. This creation replaces the traditional contact armature with a Hall-effect detector, and is applied to a resistance-rotating material level switch device, so that the material level switch has a longer life, better safety, saves more materials, and achieves a lighter, thinner, shorter life. purpose.

Description

Rotation resistance type material level switch device with inner-wound Hall motor module

This creation is about level sensors, especially a resistance-rotating level switch device.

The conventional anti-rotation level opening relationship uses a motor drive device to transmit power to the blades via the transmission shaft. Furthermore, the anti-rotation level switch is fixed on the storage bin when it is installed. When the blade is not in contact with the material, the motor runs and the drive device runs; and when the blade touches the material and generates resistance, the motor will reverse and touch The power-off switch stops the motor and the driving device, thereby achieving the function of detecting the storage status of the material in the storage bin.

Furthermore, most of the traditional DC resistance spin level switch drive devices use armature-type small DC motors, which are powered on the magnetic pole coils of the rotor, so that the magnetic polarity of the rotor and the external fixed permanent magnetic field are mutually exclusive and rotate. The output of the rotor magnetic pole coil of the armature type DC motor and the armature must make contact friction, so after a long time use, it will cause wear and failure, shortening the service life.

In view of this, the creator has focused on the above-mentioned existing technology, specially researched and cooperated with the application of academic theory, and tried his best to solve the above-mentioned problems, which became the goal of the creator's improvement.

One purpose of this creation is to provide an anti-rotation type material level switch device with an inner-wound Hall motor module, which uses the Hall effect as an inductive detection of the anti-rotation type material level switch device, thereby allowing the resistance to The rotary level switch has a longer life, improved reliability and reduced assembly components to achieve the purpose of lightness, thinness and shortness.

In order to achieve the above-mentioned purpose, this creation is a resistance-rotation level switch device with an inner-wound Hall motor module, which includes a housing base, a Hall motor module, a drive shaft group, a reduction gear module, and a reduction gear. Modules and resistance rotation components. The Hall motor module is arranged in the housing base and isolated from the external environment to form a closed space with the housing base, and includes a coil stator group, a magnet rotor group, a motor cover, a control circuit board and a Hall effect detector. The wire of the coil stator group is connected to the control circuit board and is stationary relative to the motor cover. The magnet rotor group is arranged in the motor cover, the coil stator group surrounds the magnet rotor group, and the Hall effect detector is arranged on the control circuit board, and has a magnetic field change position corresponding to the rotation of the magnet rotor group. The drive shaft group includes a drive shaft and a drive gear. One end of the drive shaft is coupled to the motor cover and rotates with the magnet rotor assembly, and the other end of the drive shaft is coupled with a drive gear. The reduction gear module is arranged in the housing seat and isolated from the external environment to form another enclosed space with the Hall motor module, and the reduction gear module is linked with the Hall motor module through the drive shaft group. The reduction gear module includes a gear box and a reduction gear set installed in the gear box. The gear box receives the drive shaft, and the reduction gear set meshes with the drive gear and is driven by the drive shaft. The anti-rotation component includes a transmission shaft and blades fixed on the transmission shaft. The transmission shaft is driven by the reduction gear set to rotate the blades.

Compared with the conventional technology, the anti-rotation type material level switch device of this creation is driven by a Hall motor module, and a Hall effect detector is used to detect the rotation frequency of the magnet rotor group, so as to feedback to the power control. The module keeps the rotation speed and rotation direction of the magnet rotor group in a stable range. This is a non-contact detection method, so the armature wear of the traditional motor will not occur and the reliability will be low. This design can increase the service life. The magnet rotor group is arranged in the motor cover and the coil stator group surrounds the magnet rotor group, increasing the unit magnetic flux density to increase the torque output, and has the simple and convenient assembly; in addition, the Hall motor module of this creation is equipped with a deceleration The gear module meets the requirements of increasing the output torque and reducing the speed. The Hall motor module and the reduction gear module are arranged in the housing seat, and adopt a modular and detachable structure setting, which can be replaced according to the torque design. Gear modules with different gear ratios increase the product specifications of this creation and achieve the purpose of customization; In addition, the Hall motor module of this creation is equipped with a current converter on the control circuit board to provide a resistance-rotating level switch It can be directly supplied with direct current (DC) power and applied to various instruments and equipment, so there is no need to design a power converter separately, which can reduce power consumption and reduce the cost of circuit boards and parts. And because the control circuit board is enclosed in the motor cover, Therefore, it has a dustproof effect and increases the practicality of this creation.

The detailed description and technical content of this creation are described below with the drawings. However, the attached drawings are only provided for reference and explanation, and are not used to limit the creation.

Please refer to Figure 1, which is a combined cross-sectional view of the anti-rotation level switch device created for this creation. This creation is a resistance-rotation level switch device 1 with an inner-wound Hall motor module. It includes a housing base 10, a Hall motor module 20, a drive shaft group 30, and a reduction gear module 40. And a rotation resistance component 50. The Hall motor module 20 and the reduction gear module 40 are arranged in the housing base 10. The Hall motor module 20 drives the reduction gear module 40 and decelerates through the reduction gear module 40. One end of the drive shaft group 30 is connected to the reduction gear module 40, and the other end is connected to the anti-rotation component 50.

In this embodiment, the housing base 10 is a cylindrical housing base; the Hall motor module 20 and the reduction gear module 40 are arranged in the housing base 10.

Furthermore, the anti-rotation component 50 includes a transmission shaft 51 and a blade 52 fixed at the end of the transmission shaft 51. The transmission shaft 51 is driven by the reduction gear module 40 to cause the blade 52 to rotate. In this embodiment, the anti-rotation type material level switch device 1 further includes a power control module 60, the power control module 60 is disposed inside the housing base 10 and connected to the Hall motor module 20 with wires. In actual use, the anti-rotation type material level switch device 1 is used to detect the state of the material, and the rotation of the blade 52 is blocked due to contact with the material (indicating that there is material in the storage bin, or the stored material has reached a predetermined level. Height), and then output the control signal.

Specifically, when the blade 52 of the rotation resistance assembly 50 does not touch the material, the Hall motor module 20 runs; when the blade 52 touches the material and receives resistance, the Hall motor module 20 stops driving the Hall motor. Motor module 20, and sends out signals at the same time.

It should be noted that, in this embodiment, the anti-rotation type material level switch device 1 further includes a switch housing 70. The switch housing 70 covers the Hall motor module 20 and the reduction gear module 40 so that the Hall motor module 20 and the reduction gear module 40 form an integral form.

Please continue to refer to Figures 2 to 4, which are respectively the three-dimensional exploded schematic diagram and the three-dimensional appearance schematic diagram of the Hall motor module and reduction gear module created. As shown in the figure, the Hall motor module 20 and the reduction gear module 40 of the present invention are arranged in a modular and detachable structure, and share the switch housing 70 to form an integral form. Accordingly, the gear module 40 with different gear ratios can be replaced according to the different torque designs required by customers, so as to increase the product specifications of this creation and achieve the purpose of customization.

It should be noted that after the Hall motor module 20 and the reduction gear module 40 are separately installed in a modular manner, in addition to using the switch housing 70 to form a body, a fastener (not shown) ) The combination of the two forms a whole. In addition, in actual implementation, the Hall motor module 20 and the reduction gear module 40 can also be directly formed in an integrated manner.

The Hall motor module 20 includes a coil stator group 21, a magnet rotor group 22, a motor cover 23, a control circuit board 24 and a Hall effect detector 25. In addition, the coil stator group 21 is connected to the control circuit board 24 by wires and is stationary relative to the motor cover 23. In this embodiment, the control circuit board 24 is provided with a current converter (not shown), which converts and sends out a control signal to change the coil current by the Hall effect induced magnetic field change. In addition, since the current converter of this invention is enclosed in the motor cover 23, dustproof and safety effects can be achieved.

It should be noted that the anti-rotation type material level switch device 1 of this invention can be directly supplied by a direct current (DC) power supply and applied to various instruments and equipment, without the need for an external conversion circuit. In addition, the anti-rotation type material level switch device 1 of this invention uses the Hall motor module 20 as a drive. Compared with the conventional anti-rotation type material level switch that uses a synchronous motor or a shaded pole motor for power conversion, this Creation has the advantages of reducing power consumption and reducing the cost of circuit boards and parts.

In this embodiment, the power control module 60 (see also FIG. 1) is connected to the control circuit board 24 by wires. In addition, please refer to FIG. 5, the Hall effect detector 25 is arranged on the control circuit board 24 and is arranged corresponding to the position of the magnet rotor assembly 22.

The coil stator group 21 is arranged in the motor cover 23, and the coil stator group 21 surrounds the magnet rotor group 22. Accordingly, when the magnet rotor assembly 22 rotates, the Hall effect detector 25 will be affected by the magnetic field generated when the magnet rotor assembly 22 rotates to obtain the number of rotations of the magnet rotor assembly 22.

In addition, the coil stator group 21 includes a stator base 211 connected to the control circuit board 24 and a plurality of coils 213 wound on the stator base 211. It should be noted that the current direction of the external current flowing into the coil 213 can determine the rotation direction of the magnet rotor group 22. In addition, the coil stator group 21 is arranged in the motor housing 23, and the coil stator group 21 surrounds the magnet rotor group 22.

The magnet rotor assembly 22 includes a rotor base 221 and a plurality of permanent magnets 222 arranged in the rotor base 221. Accordingly, when the magnet rotor assembly 22 rotates, the Hall effect detector 25 will be affected by the magnetic field generated when the magnet rotor assembly 22 rotates to obtain the number of rotations of the magnet rotor assembly 22.

Please also refer to Figures 5 to 7, which are respectively the combined cross-sectional view of the Hall motor module and the reduction gear module, the combined cross-sectional view of the Hall motor module and the cross-sectional view of the reduction gear module. As shown in FIG. 5, the Hall motor module 20 is arranged in the switch housing 70 to isolate the external environment, and forms a closed space with the switch housing 70.

The drive shaft assembly 30 further includes a bearing 33 sleeved with the drive shaft 31. The arrangement of the bearing 33 can increase the rotation stability of the drive shaft 31 and can prevent the drive shaft 31 from rotating yaw.

It should be noted that because the Hall motor module 20 of the present creation is matched with the reduction gear module 40, the optimal number of electrodes of the magnet rotor group 22 can be achieved under space constraints, thereby maintaining a stable torque output and rotation speed.

Please refer to FIG. 7, the drive shaft group 30 includes a drive shaft 31 and a drive gear 32. One end of the drive shaft 31 is coupled to the switch housing 70 (see FIG. 5) and rotates with the magnet rotor assembly 22; in addition, the other end of the drive shaft 31 is coupled with the drive gear 32 and passes through the switch housing 70. Therefore, the number of rotations of the magnet rotor assembly 22 is the rotation speed of the drive shaft 31, that is, the present invention can use the Hall effect detector 25 to detect the rotation frequency of the magnet rotor assembly 22, and feedback this information To the control circuit board 24, the rotation speed of the magnet rotor assembly 22 is maintained at a stable speed, so there will be no armature abrasion problem of the traditional motor, and accordingly the operating life of the motor is longer than that of the traditional armature type.

The reduction gear module 40 is disposed in the switch housing 70 and fixed under the Hall motor module 20 and isolated from the external environment to form another enclosed space with the Hall motor module 20. The reduction gear module 40 is linked with the Hall motor module 20 through the drive shaft group 30. The reduction gear module 40 includes a gear box 41 and a reduction gear set 42 installed in the gear box 41. The gear box 41 receives the other end of the drive shaft 31, and the reduction gear set 42 meshes with the drive gear 32 and is driven by the drive shaft 31. In this embodiment, the reduction gear module 40 is configured to increase the output torque and reduce the speed to meet the requirements.

It should be noted that the Hall motor module 20 and the reduction gear module 40 of the present invention are respectively arranged in a closed space. The setting of this enclosed space can prevent materials such as dust from entering and contacting the motor circuit. In addition, since the Hall motor module 20 and the reduction gear module 40 are integrally formed, the volume can be reduced and the assembly space can be saved.

In an embodiment of the present invention, the material of the motor cover 23 and the gear box 41 can be molded from metal materials or injection molded from plastic materials, or the two can be mixed and matched, depending on actual usage requirements. In addition, the gear material of the reduction gear set 42 can be plastic or metal, or a mixture of the two.

In summary, the anti-rotation level switch device 1 of this invention is provided with the Hall motor module 20, and the output torque is increased by combining the reduction gear module 40, and the Hall effect detector 25 is used to monitor the motor. Rotating speed. Therefore, the Hall motor module 20 can be combined with the reduction gear module 40 into an integrated product. In addition, since the use voltage of the Hall motor module 20 is low, it can achieve the effects of power saving, lightness and shortness, and a long service life. The above are only the preferred embodiments of this creation, and are not used to define the patent scope of this creation. Other equivalent changes using the patent spirit of this creation should all fall within the patent scope of this creation.

1: Rotary resistance type material level switch device

10: Shell seat

20: Hall motor module

21: Coil stator group

211: stator seat

213: Coil

22: Magnet rotor group

221: Rotor seat

222: permanent magnet

23: Motor cover

24: Control circuit board

25: Hall effect detector

30: Drive shaft group

31: drive shaft

32: drive gear

33: Bearing

40: Reduction gear module

41: Gearbox

42: Reduction gear set

50: Rotating components

51: drive shaft

52: blade

60: Power Control Module

70: switch housing

Figure 1 is a combined cross-sectional view of the anti-rotation level switch device of this creation.

Figure 2 is a three-dimensional exploded schematic diagram of the Hall motor module and reduction gear module of this creation.

3 and 4 are schematic diagrams of the three-dimensional appearance of the Hall motor module and the reduction gear module of this invention.

Figure 5 is a combined cross-sectional view of the Hall motor module and reduction gear module of this creation.

Figure 6 is a combined cross-sectional view of the Hall motor module of this creation.

Figure 7 is a cross-sectional view of the reduction gear module of this creation.

20: Hall motor module

21: Coil stator group

211: stator seat

213: Coil

22: Magnet rotor group

23: Motor cover

24: Control circuit board

25: Hall effect detector

30: Drive shaft group

31: drive shaft

33: Bearing

40: Reduction gear module

41: Gearbox

42: Reduction gear set

51: drive shaft

70: switch housing

Claims (6)

An anti-rotation type material level switch device with an inner-wound Hall motor module includes: A shell seat; A Hall motor module is arranged in the housing base and isolates the external environment to form a closed space with the housing base, including a coil stator group, a magnet rotor group, a motor cover, a control circuit board and a Hall The effect detector, the coil stator group wire is connected to the control circuit board and is stationary relative to the motor cover, the coil stator group is arranged in the motor cover, and the coil stator group surrounds the magnet rotor group In addition, the Hall effect detector is arranged on the control circuit board and corresponds to the position of the magnet rotor group; A drive shaft set includes a drive shaft and a drive gear. One end of the drive shaft is coupled to the motor cover and rotates with the magnet rotor set, and the other end of the drive shaft is coupled with the drive gear and passes through the motor cover ； A reduction gear module set in the housing seat and isolated from the external environment to form another enclosed space with the Hall motor module. The reduction gear module interacts with the Hall motor module through the drive shaft group. Linkage, the reduction gear module includes a gear box and a reduction gear set installed in the gear box, the gear box system receives the other end of the drive shaft, the reduction gear set meshes with the drive gear and is received by the drive shaft Driven by; and An anti-rotation component includes a transmission shaft and a blade fixed on the transmission shaft. The transmission shaft is driven by the reduction gear set to cause the blade to rotate. The resistance-rotation type material level switch device with an inner-wound Hall motor module as described in claim 1, further comprising a power control module, the power control module is arranged inside the housing base and connected with the wire Control circuit board. The anti-rotation type material level switch device with an inner-wound Hall motor module as described in claim 1, wherein the coil stator group includes a stator base connected to the control circuit board and a stator base wound on the stator base A plurality of coils; the magnet rotor set includes a rotor base and a plurality of permanent magnets arranged in the rotor base, the Hall effect detector is affected by the magnetic field generated when the magnet rotor set rotates to know the magnet rotor set Number of turns. The anti-rotation type material level switch device with an inner-wound Hall motor module according to claim 1, wherein the drive shaft set further includes a bearing sleeved with the drive shaft. The anti-rotation type material level switch device with an inner-wound Hall motor module as described in claim 1, wherein when the blade of the anti-rotation component does not touch the material, the Hall motor module operates; when the blade contacts the material When resistance is encountered, the Hall motor module will stop driving the motor shaft group and send out signals at the same time. The anti-rotation type material level switch device with an inner-wound Hall motor module as described in claim 1, which further includes a switch housing seat which covers the Hall motor module and the reduction gear group.

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