Master controller

Abstract

The utility model relates to a master controller, which comprises a support, a universal positioning cover arranged on the support, an operating mechanism arranged on the support, and a microswitch assembly arranged on the universal positioning cover and matched with the operating mechanism, the operating mechanism comprises two C-shaped shafts rotationally arranged in the support, an operating rod arranged on the support and used for driving the two C-shaped shafts to rotate, two cam pieces in linkage fit with the two C-shaped shafts, and two potentiometers arranged on the support and matched with the two C-shaped shafts. The microswitch assembly comprises a control circuit board arranged on the universal positioning cover and microswitches arranged on the control circuit board corresponding to the two cam pieces, and the cam pieces act along with the C-shaped shaft and trigger the microswitches to achieve connection or disconnection of the microswitches. The utility model has the advantages of simple structure, stable and reliable performance, small volume and convenient assembly.

Description

Technical Field

[0001] The utility model specifically relates to a master command controller. Background Art

[0002] The master controller (also called the master switch) is mainly used in electrical transmission devices to open and close contacts in a certain order to achieve the purpose of issuing commands or other control circuit interlocking and conversion. It is suitable for frequent connection and disconnection of circuits, and is often used in conjunction with magnetic starters to remotely control the starting, braking, speed regulation and reversing of wound-rotor asynchronous motors. It is widely used in the control system of traction motors of various types of lifting machinery. The master controller includes a mechanism frame, an operating mechanism arranged on the mechanism frame, and a contact system arranged in the mechanism frame. The structural design of the existing master controller is relatively complex, which leads to a large size of the master controller. In addition, the master controller has the defects of unreliable performance and cumbersome assembly. Summary of the invention

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

[0004] To achieve the above-mentioned purpose, the utility model adopts a master command controller, including a support, a universal positioning cover arranged on the support, an operating mechanism arranged on the support, and a micro switch assembly arranged on the universal positioning cover and matched with the operating mechanism. The operating mechanism includes two C-shaped shafts rotatably arranged in the support, an operating rod arranged on the support and used to drive the two C-shaped shafts to rotate, two cam pieces linked with the two C-shaped shafts, and two potentiometers arranged on the support and matched with the two C-shaped shafts. The micro switch assembly includes a control circuit board arranged on the universal positioning cover and a micro switch arranged on the control circuit board at positions corresponding to the two cam pieces. The cam piece moves with the C-shaped shaft and triggers the micro switch to realize the connection or disconnection of the micro switch.

[0005] The beneficial effects of the above structure are: the micro switch assembly adopts a modular structure design, which is convenient for modular assembly of the micro switch assembly and the universal positioning cover, and is conducive to improving the assembly efficiency of the master controller. The micro switch assembly cooperates with the cam sheet of the operating mechanism through the micro switch, and the structural design is simpler, which is conducive to reducing the volume of the master controller. And the micro switch assembly is arranged at the bottom of the universal positioning cover, and the micro switch assembly is separated from the operating mechanism, so that the working reliability of the master controller can be ensured. Therefore, the master controller has the advantages of simple structure, stable and reliable performance, small volume, and convenient assembly.

[0006] In particular, the control circuit board is provided with four screws distributed in a rectangular array, and the four screws pass through four bushings and are connected to the universal positioning cover. The control circuit board is fixed to the universal positioning cover by screws, so that the modular assembly of the micro switch assembly and the universal positioning cover is convenient, and the assembly efficiency is higher.

[0007] In particular, the universal positioning cover is provided with a positioning hole matched with the operating rod, one end of the operating rod has a positioning portion extending in the positioning hole, and the positioning portion moves with the operating rod and reciprocates in the positioning hole. The positioning hole of the universal positioning cover can play a positioning role for the operating rod, thereby facilitating the improvement of the working reliability of the master controller.

[0008] In particular, a shaft sleeve is provided on the rotating shaft of the potentiometer, a connecting hole is provided on one end of the C-shaped shaft, the shaft sleeve is inserted into the connecting hole, and a fastener connected to the shaft sleeve is provided on the C-shaped shaft. The rotating shaft of the potentiometer is connected to the C-shaped shaft through the shaft sleeve, thereby ensuring that the C-shaped shaft can reliably drive the potentiometer, which is conducive to improving the working reliability of the master controller.

[0009] In particular, a transmission shaft is linked to the other end of the C-shaped shaft, one end of the transmission shaft is inserted into the clamping hole of the cam piece, and the cam piece and the transmission shaft are linked, and a bolt is arranged on one end of the transmission shaft, and a washer is arranged between the bolt and the cam piece. The C-shaped shaft is clamped with the cam piece through the transmission shaft, so that the assembly of the C-shaped shaft and the cam piece is convenient, and the assembly is more convenient.

[0010] In particular, the support is provided with a mounting plate, the mounting plate is provided with a dust cover wrapped around the operating rod, a waterproof pad is provided between the mounting plate and the support, and the other end of the operating rod has a handle exposed outside the dust cover. The dust cover can play a dustproof role, can prevent dust and debris from entering the support, and is conducive to improving the working reliability of the operating mechanism of the master controller.

[0011] In particular, a cross-shaped guide hole matching the operating rod is provided in the support, and the guide hole guides the operating rod, thereby facilitating the improvement of the working reliability of the master controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a stereogram of an embodiment of the utility model.

[0013] Figure 2 It is a cross-sectional view of an embodiment of the utility model.

[0014] Figure 3 This is an internal structure diagram of an embodiment of the utility model.

[0015] Figure 4 This is a three-dimensional diagram of the embodiment of the utility model after removing the dust cover. DETAILED DESCRIPTION

[0016] like Figures 1 to 4 As shown, the embodiment of the utility model is a master controller, including a support 10, a universal positioning cover 11 arranged on the support 10, an operating mechanism 20 arranged on the support 10, and a micro switch assembly 30 arranged on the universal positioning cover 11 and matched with the operating mechanism 20, wherein the operating mechanism 20 includes two C-shaped shafts 21 rotatably arranged in the support 10, an operating rod 22 arranged on the support 10 and used to drive the two C-shaped shafts 21 to rotate, two cam pieces 23 linked with the two C-shaped shafts 21, and two potentiometers 24 arranged on the support 10 and matched with the two C-shaped shafts 21. The micro switch assembly 30 includes a control circuit board 31 arranged on the universal positioning cover 11, and micro switches 32 arranged on the control circuit board 31 at positions corresponding to the two cam pieces 23. The cam pieces 23 move with the C-shaped shafts 21 and trigger the micro switches 32 to achieve the connection or disconnection of the micro switches 32. The control circuit board 31 is provided with four screws 33 distributed in a rectangular array, and the four screws 33 pass through four bushings 34 and are connected to the universal positioning cover 11. The control circuit board is fixed to the universal positioning cover by screws, so as to facilitate the modular assembly of the micro switch assembly and the universal positioning cover, and the assembly efficiency is higher.

[0017] like Figures 2 to 4As shown, the universal positioning cover 11 is provided with a positioning hole 111 matched with the operating rod 22, and one end of the operating rod 22 has a positioning portion 221 extending in the positioning hole 111, and the positioning portion moves with the operating rod and reciprocates in the positioning hole. The positioning hole of the universal positioning cover can play a positioning role on the operating rod, which is beneficial to improving the working reliability of the master controller. A sleeve 25 is provided on the rotating shaft 241 of the potentiometer 24, and a connecting hole 211 is provided on one end of the C-shaped shaft 21. The sleeve 25 is inserted in the connecting hole 211, and a fastener 26 connected to the sleeve 25 is provided on the C-shaped shaft 21. The rotating shaft of the potentiometer is connected to the C-shaped shaft through the sleeve, so that it can be ensured that the C-shaped shaft can reliably drive the potentiometer, which is beneficial to improving the working reliability of the master controller. The other end of the C-shaped shaft 21 is linked with a transmission shaft 27, one end of which is inserted into the clamping hole 231 of the cam piece 23, and forms a linkage between the cam piece 23 and the transmission shaft 27, and a bolt 28 is arranged on one end of the transmission shaft 27, and a washer 29 is arranged between the bolt 28 and the cam piece 23. The C-shaped shaft is clamped with the cam piece through the transmission shaft, so as to facilitate the assembly of the C-shaped shaft and the cam piece, and the assembly is more convenient. The support 10 is provided with a mounting plate 12, and the mounting plate 12 is provided with a dust cover 13 wrapped on the operating rod 22, and a waterproof pad 14 is arranged between the mounting plate 13 and the support 10, and the other end of the operating rod 22 has a handle portion 222 exposed outside the dust cover 13. The dust cover can play a dustproof role, which can prevent dust and debris from entering the support, which is conducive to improving the working reliability of the operating mechanism of the master controller.

[0018] like Figure 4 As shown, a guide hole 101 in the shape of a cross is provided in the support 10 to match the operating rod 22. The guide hole guides the operating rod, thereby facilitating the improvement of the working reliability of the master controller.

[0019] The micro switch assembly adopts a modular structure design, which is convenient for modular assembly of the micro switch assembly and the universal positioning cover, and is conducive to improving the assembly efficiency of the master controller. The micro switch assembly cooperates with the cam piece of the operating mechanism through the micro switch, and the structural design is simpler, which is conducive to reducing the volume of the master controller. The micro switch assembly is arranged at the bottom of the universal positioning cover, and the micro switch assembly is separated from the operating mechanism, so that the working reliability of the master controller can be ensured. Therefore, the master controller has the advantages of simple structure, stable and reliable performance, small volume, and convenient assembly.

Claims

1. A master controller, characterized in that: It includes a support, a universal positioning cover arranged on the support, an operating mechanism arranged on the support, and a micro switch assembly arranged on the universal positioning cover and matched with the operating mechanism. The operating mechanism includes two C-shaped shafts rotatably arranged in the support, an operating rod arranged on the support and used to drive the two C-shaped shafts to rotate, two cam pieces linked with the two C-shaped shafts, and two potentiometers arranged on the support and matched with the two C-shaped shafts. The micro switch assembly includes a control circuit board arranged on the universal positioning cover and micro switches arranged on the control circuit board at positions corresponding to the two cam pieces. The cam pieces move with the C-shaped shafts and trigger the micro switches to achieve the connection or disconnection of the micro switches.

2. The master controller according to claim 1, characterized in that: The circuit board is provided with four screws distributed in a rectangular array, and the four screws pass through four bushings and are connected to the universal positioning cover.

3. The master controller according to claim 1 or 2, characterized in that: The universal positioning cover is provided with a positioning hole matched with the operating rod, one end of the operating rod is provided with a positioning part extending in the positioning hole, and the positioning part moves with the operating rod and reciprocates in the positioning hole.

4. The master controller according to claim 1 or 2, characterized in that: A shaft sleeve is arranged on the rotating shaft of the potentiometer, a connecting hole is arranged on one end of the C-shaped shaft, the shaft sleeve is inserted into the connecting hole, and a fastener connected to the shaft sleeve is arranged on the C-shaped shaft.

5. The master controller according to claim 1 or 2, characterized in that: A transmission shaft is linked to the other end of the C-shaped shaft, one end of the transmission shaft is inserted into the clamping hole of the cam plate, and forms a linkage between the cam plate and the transmission shaft, and a bolt is arranged on one end of the transmission shaft, and a washer is arranged between the bolt and the cam plate.

6. The master controller according to claim 1 or 2, characterized in that: The support is provided with a mounting plate, the mounting plate is provided with a dust cover wrapped on the operating rod, a waterproof pad is provided between the mounting plate and the support, and the other end of the operating rod has a handle exposed outside the dust cover.

7. The master controller according to claim 1 or 2, characterized in that: A cross-shaped guide hole matching the operating rod is arranged in the support.

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