High-protection master controller

Abstract

The utility model relates to a high-protection master controller, which comprises a support, an operating mechanism, a potentiometer and a microswitch. The operating mechanism comprises a rotating shaft rotationally arranged in the support, an operating rod arranged on the rotating shaft, a sector gear arranged on the rotating shaft in a linkage manner, a transmission gear arranged on an output shaft of the potentiometer and meshed with the sector gear, and a cam arranged on the rotating shaft in a linkage manner, and the cam acts along with the rotating shaft and triggers the microswitch; the support is provided with dustproof cover plates covering the potentiometer and the microswitch respectively, the support is provided with a bottom cover, a containing cavity is formed between the bottom cover and the support, a circuit board is arranged in the containing cavity, and the circuit board is connected with the circuit board. And a waterproof joint communicated with the accommodating cavity is arranged on the bottom cover. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and high protection.

Description

Technical Field

[0001] The utility model relates to a master controller, in particular to a high-protection master controller. Background Art

[0002] A master controller (also known as a master switch) is mainly used in an electric drive device to connect and disconnect contacts in a certain sequence to achieve the purpose of issuing commands or interlocking and switching other control circuits. It is suitable for frequently connecting and disconnecting circuits, and is often used in conjunction with a magnetic starter to remotely control the starting, braking, speed regulation, and commutation of a wound-rotor asynchronous motor. It is widely used in the control systems of drive motors for various types of cranes. The master controller includes a mechanism frame, an operating mechanism arranged on the mechanism frame, and a contact system arranged inside the mechanism frame. The micro switches and potentiometers of the existing master controller are exposed outside the mechanism frame, and the protection performance is poor. Moreover, the master controller also has defects such as complex structure, unreliable performance, and inconvenient assembly. Summary of the Invention

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a high-protection master controller with a simple structure, stable and reliable performance, and convenient assembly.

[0004] To achieve the above purpose, the utility model adopts a high-protection master controller, which includes a support, an operating mechanism arranged on the support, a potentiometer arranged on one side of the support, and a micro switch arranged on the other side of the support. The operating mechanism includes a rotating shaft rotatably arranged in the support, a joystick arranged on the rotating shaft, a sector gear linked to the rotating shaft, a transmission gear arranged on the output shaft of the potentiometer and meshing with the sector gear, and a cam linked to the rotating shaft. The cam acts with the rotating shaft and triggers the micro switch to realize the connection or disconnection of the micro switch. The support is respectively provided with dust-proof covers covering the potentiometer and the micro switch. The support is provided with a bottom cover, and a receiving cavity is formed between the bottom cover and the support. A circuit board is arranged in the receiving cavity, and a waterproof connector communicating with the receiving cavity is arranged on the bottom cover.

[0005] The beneficial effects of the above structure are as follows: Dust-proof covers covering the potentiometer and the micro switch are arranged on the support, which can prevent the potentiometer and the micro switch from being exposed outside the support, and the protection performance is better. Moreover, the rotating shaft triggers the potentiometer and the micro switch through the sector gear and the cam respectively. The structure design of the operating mechanism is simpler, the operation is more convenient, and the circuit board is arranged in the receiving cavity, and a waterproof connector is arranged on the base, which is beneficial to improving the waterproof performance of the master controller. Therefore, the master controller has the advantages of simple structure, stable and reliable performance, convenient assembly, and high protection.

[0006] Specifically, a positioning plate matched with the joystick is arranged on the support, and a positioning and guiding hole through which the joystick can pass is arranged on the positioning plate. The positioning and guiding hole of the positioning plate can play a role in guiding and positioning the joystick, thereby facilitating the operation of the joystick.

[0007] Specifically, a cover plate is arranged on the positioning plate, a dust-proof cover is arranged between the cover plate and the joystick, and a waterproof gasket is arranged between the positioning plate and the cover plate. The dust-proof cover can play a dust-proof role and can prevent dust from entering the support, thereby being beneficial to improving the protection performance of the master controller.

[0008] Specifically, two positioning grooves are arranged at both ends of the rotating shaft corresponding to the support, two bearings are arranged in the two positioning grooves, and both ends of the rotating shaft are respectively inserted on the two bearings, and a rotational connection and cooperation between the rotating shaft and the two bearings are formed. The rotating shaft is clamped on the support through the two bearings, thereby facilitating the assembly of the rotating shaft and the support, with higher assembly efficiency. The rotating shaft is arranged on the two bearings, and the transmission of the rotating shaft is more reliable.

[0009] Specifically, a support plate is arranged on the support corresponding to the potentiometer, an arc-shaped clamping groove is arranged on the support plate, and the arc-shaped clamping groove is clamped on the peripheral wall of the potentiometer, and a clamping connection and cooperation between the support plate and the potentiometer are formed. The potentiometer and the support plate are connected by a clamping connection and cooperation method, thereby realizing the modular assembly of the potentiometer, the support plate and the support, with higher assembly efficiency. Description of the Drawings

[0010] Figure 1 It is a perspective view of an embodiment of the present utility model.

[0011] Figure 2 It is a sectional view of an embodiment of the present utility model.

[0012] Figure 3 It is an internal structure diagram of an embodiment of the present utility model.

[0013] Figure 4 It is a perspective view of the support of an embodiment of the present utility model.

[0014] Figure 5 It is a perspective view of the support plate of an embodiment of the present utility model. Detailed Embodiment

[0015] As Figures 1 to 5As shown in the figure, an embodiment of the utility model is a high-protection master controller, which includes a support 10, an operating mechanism 20 arranged on the support 10, a potentiometer 11 arranged on one side of the support 10, and a microswitch 12 arranged on the other side of the support 10. The operating mechanism 20 includes a rotating shaft 21 rotatably arranged in the support 10, a joystick 22 arranged on the rotating shaft 21, a sector gear 23 linked to the rotating shaft 21, a transmission gear 24 arranged on the output shaft 111 of the potentiometer 11 and meshed with the sector gear 23, and a cam 25 linked to the rotating shaft 21. The cam 25 acts with the rotating shaft 21 and triggers the microswitch 12 to realize the on or off of the microswitch 12. Dust-proof covers 13 covering the potentiometer 11 and the microswitch 12 are respectively arranged on the support 10. A bottom cover 14 is arranged on the support 10. An accommodation cavity 100 is formed between the bottom cover 14 and the support 10. A circuit board 15 is arranged in the accommodation cavity 100. A waterproof connector 150 communicating with the accommodation cavity 100 is arranged on the bottom cover 14.

[0016] As Figure 2 , 3 , and as shown in Figure 4, a positioning plate 16 cooperating with the joystick 22 is arranged on the support 10, and a positioning guide hole 161 through which the joystick 22 can pass is arranged on the positioning plate 16. The positioning guide hole of the positioning plate can play a role in guiding and positioning the joystick, thus facilitating the operation of the joystick. A cover plate 17 is arranged on the positioning plate 16. A dust-proof cover 18 is arranged between the cover plate 17 and the joystick 22. A waterproof gasket 181 is arranged between the positioning plate 16 and the cover plate 17. The dust-proof cover can play a dust-proof role and can prevent dust from entering the support, thus being beneficial to improving the protection performance of the master controller. Two positioning grooves 101 are arranged at both ends of the corresponding rotating shaft 21 on the support 10. Two bearings 19 are arranged in the two positioning grooves 101. Both ends of the rotating shaft 21 are respectively inserted on the two bearings 19, and a rotational connection and cooperation between the rotating shaft 21 and the two bearings 19 are formed. The rotating shaft is clamped on the support through the two bearings, thus facilitating the assembly of the rotating shaft and the support, with higher assembly efficiency. The rotating shaft is arranged on the two bearings, and the transmission of the rotating shaft is more reliable. A support plate 102 is arranged on the support 10 corresponding to the potentiometer 11. An arc-shaped clamping groove 1021 is arranged on the support plate 102. The arc-shaped clamping groove 1021 is clamped on the peripheral wall of the potentiometer 11, and a clamping connection and cooperation between the support plate 102 and the potentiometer 11 are formed. The potentiometer and the support plate are connected by a clamping connection and cooperation method, thus realizing the modular assembly of the potentiometer, the support plate and the support, with higher assembly efficiency.

[0017] A dust-proof cover is provided on the support to cover the potentiometer and microswitch, which can prevent the potentiometer and microswitch from being exposed outside the support, providing better protection performance. Moreover, the rotating shaft triggers the potentiometer and microswitch through a sector gear and a cam respectively. The structure of this operating mechanism is simpler, the operation is more convenient, and the circuit board is arranged in the accommodating cavity, and a waterproof connector is provided on the base, which is conducive to improving the waterproof performance of the master controller. Therefore, the master controller has the advantages of simple structure, stable and reliable performance, convenient assembly, and high protection.

Claims

1. A high protection master controller, characterized in that: It includes a support, an operating mechanism arranged on the support, a potentiometer arranged on one side of the support, and a micro switch arranged on the other side of the support. The operating mechanism includes a rotating shaft rotatably arranged in the support, a joystick arranged on the rotating shaft, a fan gear arranged on the rotating shaft in linkage, a transmission gear arranged on the output shaft of the potentiometer and meshing with the fan gear, and a cam arranged on the rotating shaft in linkage. The cam moves with the rotating shaft and triggers the micro switch, and realizes the connection or disconnection of the micro switch. The support is respectively provided with dust cover plates covering the potentiometer and the micro switch, and the support is provided with a bottom cover. A accommodating cavity is formed between the bottom cover and the support, a circuit board is arranged in the accommodating cavity, and a waterproof joint connected to the accommodating cavity is arranged on the bottom cover.

2. The high protection master controller according to claim 1, characterized in that: The support is provided with a positioning plate matched with the operating rod, and the positioning plate is provided with a positioning guide hole for the operating rod to pass through.

3. The high protection master controller according to claim 2, characterized in that: A cover plate is arranged on the positioning plate, a dust cover is arranged between the cover plate and the operating rod, and a waterproof pad is arranged between the positioning plate and the cover plate.

4. The high protection master controller according to claim 1 or 2, characterized in that: Two positioning grooves are arranged on the support at the two ends of the rotating shaft, and two bearings are arranged in the two positioning grooves. The two ends of the rotating shaft are respectively inserted into the two bearings, and a rotation connection is formed between the rotating shaft and the two bearings.

5. The high protection master controller according to claim 1 or 2, characterized in that: A support plate is arranged on the support seat at a position corresponding to the potentiometer, and an arc-shaped slot is arranged on the support plate. The arc-shaped slot is engaged with the peripheral wall of the potentiometer to form a snap-fitting fit between the support plate and the potentiometer.

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