WO2021088427A1

WO2021088427A1 - Stepper motor control-based high-power electronic switch

Info

Publication number: WO2021088427A1
Application number: PCT/CN2020/104849
Authority: WO
Inventors: 文毅
Original assignee: 宁波海贝电器有限公司
Priority date: 2019-11-05
Filing date: 2020-07-27
Publication date: 2021-05-14
Also published as: CN110676078B; CN110676078A

Abstract

A stepper motor control-based high-power electronic switch, comprising an electronic switch main body, and a fixed box (8); the electronic switch main body comprises an extra-thick current-carrying stationary contact conductive elastic piece (1), an extra-thick current-carrying movable contact conductive elastic piece (2), L-shaped conductive elastic piece fixing plates (3), a PCB (5), and a plastic base (6), and further comprises a stepper motor (4) and a Hall element (45); the stepper motor (4) is electrically connected to the PCB (5), the stepper motor (4) is electrically connected to the Hall element (45), the Hall element (45) is electrically connected to the PCB (5), and a power line of the PCB (5) can be electrically connected to a load, there are at least two L-shaped conductive elastic piece fixing plates (3), and the two L-shaped conductive elastic piece fixing plates (3) are respectively fixed on a first surface of the plastic base (6). The described switch solves the problems that the driving force of a traditional electronic switch is relatively small and the requirements for a protection box of a traditional electronic switch are relatively high.

Description

A high-power electronic switch based on stepping motor control

The invention belongs to the technical field of timers, and more specifically, relates to a high-power electronic switch based on stepping motor control.

Background technique

Most of the traditional electronic switches are controlled by relays. The volume of the relay is relatively small, so the power is relatively small. Under normal circumstances, the power of the traditional electronic switches is up to 2HP (HP is the abbreviation of horsepowe, Chinese horsepower). Traditional electronic switches are mainly used to drive loads such as motors. As the load increases, the power requirements of the electronic switches are also increasing. When the load increases to a certain level, the traditional electronic switches cannot be driven. Therefore, the load that can be driven by the electronic switch is relatively limited. Furthermore, the traditional electronic switch is directly placed in the protective box, so the requirements on the protective box are relatively high.

Summary of the invention

In view of this, in order to solve the problem that the driving force of the traditional electronic switch is relatively small and the protection box of the traditional electronic switch is relatively high, the present invention proposes a high-power electronic switch based on stepping motor control, which does not use the traditional The structure of the relay control uses the Hall element to control the forward and reverse rotation of the motor shaft of the stepper motor, thereby driving the forward and reverse rotation of the swing arm on the motor shaft of the stepper motor, and the swing arm can drive the flow of extra-heavy loads. The conductive shrapnel of the contact moves to realize the contact and separation with the conductive shrapnel of the extra-thick current-carrying static contact. When the conductive shrapnel of the extra-thick current-carrying static contact comes into contact with the conductive shrapnel of the extra-thick current-carrying static contact, the entire circuit Conduction, when the conductive shrapnel of the extra-thick current-carrying contact and the extra-thick current-carrying static contact are separated, the entire circuit is disconnected. With this structure, the power adjustment of the electronic switch can be increased from 2HP to above 5HP, which greatly improves the ability of the electronic switch to drive the load, but at the same time maintains the small size of the electronic switch. At the same time, a fixed shell is installed outside the main body of the electronic switch, so that the main body of the entire electronic switch is fixed in it, so that the shape of the entire electronic switch becomes more regular and convenient to use, so that the electronic switch can be used alone in a normal environment. In the environment, a protective shell can be added for use, and the requirements for the protective shell are relatively simple, and there is no need to customize the shape to match, but use the common protective shell on the market.

A high-power electronic switch based on stepping motor control, which includes: an electronic switch main body and a fixed box 8. The electronic switch main body includes an extra-thick current-carrying static contact conductive shrapnel 1, an extra-thick current-carrying static contact conductive shrapnel 2, L -Shaped conductive shrapnel fixing plate 3, PCB board 5, and plastic base 6, which are characterized in that they also include a stepping motor 4 and a Hall element 45. The stepping motor 4 is electrically connected to the PCB board 5, and the stepping motor 4 is electrically connected to the Hall element. The Hall element 45 is electrically connected, the Hall element 45 is electrically connected to the PCB board 5, the power line of the PCB board 5 can be electrically connected to the load, and the number of the L-shaped conductive spring fixing plate 3 is at least two, and two L The fixed plates 3 of the conductive spring are respectively fixed on the first surface of the plastic base 6, and one end of the conductive spring 1 of the extra-thick current-carrying contact is fixed on one of the fixed plates 3 of the L-shaped conductive spring by screws. The free end of the contact conductive shrapnel 1 is provided with a first silver contact 11, and one end of the ultra-thick conductive shrapnel 2 of the ultra-thick mobile contact is fixed to another L-shaped conductive shrapnel fixing plate 3 by screws, and the ultra-thick conductive shrapnel for the mobile contact is fixed The free end of 2 is provided with a second silver contact 21, the middle position of the ultra-thick load current contact conductive spring 2 is provided with a limiting protrusion 22, the stepping motor 4 is fixed on the plastic base 6, and the stepping motor 4 A swing arm 44 is sleeved on the outside of the motor shaft 43. The swing arm 44 can resist the limiting protrusion 22 during the rotation of the motor shaft 43. When the swing arm 44 is in the first position 441, the extra-heavy load flow touches The point conductive spring 2 is in an unstressed state, the extra thick current-carrying contact conductive spring 2 is separated from the extra thick current-carrying static contact conductive spring 1, and the entire circuit of the switch is disconnected. When the swing arm 44 is in the second position 442 When the second silver contact 21 of the extra-thick current-carrying contact conductive spring 2 is forced to run to contact with the first silver contact 11 of the extra-thick current-carrying static contact conductive spring 1, the entire circuit of the switch is turned on; The fixed box 8 includes a side surface and a top surface. The side surface is composed of two opposite rectangles, and one surface of the rectangle is fixedly connected to the top surface. The top surface is provided with a second fence 84 on the plane close to the side surface. The second fence 84 and the side surface form A protection fence is used to fix and protect the stepping motor 4 and the crimping terminal fence 86. The crimping terminal fence 86 passes through the crimping terminal 7, and a circular fixing hole 85 is provided on the top surface. The position of the fixing hole 85 is located directly above the wire terminal fence 86, a rectangular fixing hole 87 is provided on the side, and the rectangular fixing hole 87 is located just below the wire terminal fence 86, and a plurality of positioning posts 88 are provided on the top surface. It is used for matching with the positioning post on the plastic base 6 so that the main body of the electronic switch and the fixing box 8 can be fixedly connected.

Further, a fire switch 54 is welded on the surface of the PCB board 5.

Further, the limiting protrusion portion 22 adopts a rhombus structure, so that the swing arm 44 can just resist the limiting protrusion portion 22 and drive the ultra-thick conductive elastic piece 2 of the mobile contact to rotate with a screw at one end as a fulcrum.

Further, the first free end 12 of the L-shaped conductive spring fixing plate connected to the extra-thick current-carrying static contact conductive spring 1 is provided with a first crimping terminal 71, and the L connected to the extra-thick current-carrying static contact conductive spring 2 The second free end 23 of the shaped conductive spring plate is provided with a fourth crimping terminal 74. The second crimping terminal 72 and the third crimping terminal 73 are respectively connected to a neutral wire and a live wire, and the positions of the neutral wire and the live wire They can be interchanged, and the neutral and live wires are connected to the PCB board 5 respectively to provide power to the electronic switch; the plastic base 6 is also provided with two metal sheets, and one end of the two metal sheets passes through one A neutral wire and a live wire are connected to the PCB board 5. The other ends of the two metal sheets are respectively provided with a second crimping terminal 72 and a third crimping terminal 73. The second crimping terminal and the third crimping terminal are Through a neutral wire and a live wire respectively, the positions of the neutral wire and the live wire can be interchanged, and the neutral wire and the live wire are connected to the power supply of the load.

Further, the number of the circular fixing holes 85 on the fixing box 8 is four, which are a first circular fixing hole 851, a second circular fixing hole 852, a third circular fixing hole 853, and a fourth circular fixing hole. The number of holes 854 and rectangular fixing holes 87 are also four, which are the first rectangular fixing hole 871, the second rectangular fixing hole 872, the third rectangular fixing hole 873, and the fourth rectangular fixing hole 874, and the first circular fixing hole 851. The first rectangular fixing hole 871, the first crimping terminal 71 and the crimping terminal fence 86 correspond one-to-one, and so on, the other round fixing holes 85, the rectangular fixing hole 87, the crimping terminal 7 and the crimping terminal The fences 86 are in one-to-one correspondence.

Further, the stepping motor 4 is electrically connected to the PCB board 5 through the first control line 41, the free end of the first control line 41 is provided with a first connection terminal 42 which can be inserted into the connection socket 51, The Hall element 45 is electrically connected to the PCB board 5 through the second control line 46. The free end of the second control line 46 is provided with a second connection terminal 47. The second connection terminal 47 can be inserted into the connection socket 51. The connection socket 51 It is fixed on the PCB board by soldering.

Further, the swing arm 44 includes a central cylinder and a convex structure, and the convex structure is located on one side of the central cylinder, which facilitates the shifting of the limiting convex portion 22.

Further, the PCB board 5 is connected to the button 52, and the button 52 is used for inputting signals. The PCB board sends the signal to the Hall element 45 and the stepping motor 4, and the Hall element 45 controls the forward and reverse rotation of the stepping motor 4, thereby The circuit in the switch is turned on and off.

Further, the PCB board 5 is connected to the WIFI signal indicating ring 53 for displaying whether the electronic switch is successfully connected to the WIFI signal.

Further, in order to increase the stability of the conductive elastic sheet 1 of the extra-thick current-carrying static contact, a first additional fixing block 61 and a second additional fixing block 61 and a second additional fixing block 61 are added on both sides of the upright part of the conductive elastic sheet 1 of the extra-thick current-carrying static contact. Fixing block 62; in order to increase the stability of the conductive elastic sheet 2 of the ultra-thick load mobile contact, a third additional fixing block 63 and a fourth additional fixation are respectively added on both sides of the erected part of the conductive elastic sheet 2 of the ultra-thick load mobile contact Block 64.

Further, the main body of the stepping motor 4 is provided with two screw holes, which can fix the main body of the stepping motor 4 on one surface of the plastic base 6, and the motor shaft 43 of the stepping motor 4 is located on the other side of the plastic base 6. A surface, which helps to save space.

Further, a first fence 67 is provided on the surface of the plastic base 6 away from the top surface of the fixed box 8. The first fence 67 encloses the main body of the stepping motor 4, and both ends of the first fence 67 are respectively provided with a first fence 67 The first line card 65 and the second line card 66, the first line card 65 and the second line card 66 can pass through the first control line 41 of the stepper motor 4, so that the first fence 67 can isolate and protect the stepper motor 4 The first control line 41, and makes the first control line 41 neat.

Further, the top surface of the fixed box 8 is provided with a circular perforation 81 for passing through the button 52, and the button 52 can be pressed or ejected in the circular perforation 81; the top surface of the fixed box 8 is provided with a WIFI perforation 82. Enable the WIFI signal indicator ring to be embedded in it.

Further, the high-power electronic switch based on stepping motor control as described above also includes a protective shell 9. The protective shell 9 includes an upper cover 91 and a lower cover 92. The side of the upper cover 91 is provided with a first fixed shaft 911 and a first fixed shaft 911. Two fixed shafts 912, a first shaft sleeve 921 and a second shaft sleeve 922 are provided on the side of the lower cover 92, the first fixed shaft 911 passes through the first shaft sleeve 921, and the second fixed shaft 912 passes through the second shaft sleeve 922 , And the first fixed shaft 911 and the second fixed shaft 912 rotate synchronously in the first sleeve 921 and the second sleeve 922, so that the upper cover 91 and the lower cover 92 can be opened and closed, and the other side of the upper cover 91 A buckle frame 913 is provided, and the other side of the lower cover 92 is provided with a buckle 923. When the upper cover 91 and the lower cover 92 are closed, the buckle 923 passes through the buckle frame 913 and is fixed.

Further, the inner side of the lower cover 92 of the protective shell 9 is provided with a plurality of locking grooves 924 and hooks 925, which can be snapped and fixed with the recessed area 89 on the outer side of the fixed box 8, and the lower cover 92 of the protective shell 9 A plurality of screw post fixing holes 926 are provided on the inner surface of the bottom surface for connecting with screw posts on the surface of the plastic base 6 away from the fixing box 8 so that the entire electronic switch can be fixed inside the protective shell 9.

Further, the lower cover 92 of the protective shell 9 is provided with a plurality of tapable holes for passing through the control wire, so that the high-power electronic switch based on the stepping motor control can be applied to the outdoor environment.

The working principle of the high-power electronic switch based on stepper motor control of the present invention is as follows: In the first working mode, the button 52 sends a signal to the PCB board 5, and the PCB board 5 passes through the first control line 41 and the second control line 46 Send a signal to control the stepping motor 4 and the Hall element 45, so that the Hall element 45 controls the stepping motor 4 to rotate forward or reverse, so that the swing arm 44 sleeved outside the motor shaft 43 of the stepping motor 4 moves from the first position 441 moves to the second position 442. At this time, the swing arm 44 drives the limiting protrusion 22 of the ultra-thick mobile contact conductive shrapnel 2 to move, so that the second silver contact 21 of the ultra-thick mobile contact conductive shrapnel 2 is moved. It can be in contact with the first silver contact 11 of the extra-thick current-carrying static contact conductive shrapnel 1. At this time, the circuit of the entire electronic switch is turned on, and the control line connected to the fourth pressure line terminal 74 inputs the control signal, and the first pressure The control line connected to the line terminal 71 outputs a control signal, so that the load starts to work;

In another working mode, the button 52 sends a signal to the PCB board 5. The PCB board 5 sends signals to the stepping motor 4 and the hall element 45 through the first control line 41 and the second control line 46, so that the hall element 45 Control the stepper motor 4 to reverse or forward, so that the swing arm 44 sleeved outside the motor shaft 43 of the stepper motor 4 moves from the second position 442 to the first position 441. At this time, the swing arm 44 drives the extra-heavy load flow contact. The position-limiting protrusion 22 of the point conductive spring 2 moves, so that the second silver contact 21 of the extra-thick current-carrying contact conductive spring 2 can interact with the first silver contact 11 of the extra-thick current-carrying static contact conductive spring 1 When disconnected, the circuit of the entire electronic switch is disconnected, the control line connected to the fourth crimping terminal 74 inputs a control signal, and the control line connected to the first crimping terminal 71 outputs a control signal, so that the load no longer works.

It can be seen that the use of the stepping motor and the Hall element linkage of the present invention to control the movement of the ultra-thick current-carrying contact conductive shrapnel to replace the original relay can keep the volume of the electronic switch basically unchanged, but greatly improve The maximum power of the electronic switch. In addition, the use of silver contacts can not only improve the conductivity, but also prolong the service life of the electronic switch, and at the same time increase the power of the electronic switch. At the same time, the electronic switch of the present invention has a regular outer surface and can be applied to a variety of applications.

Description of the drawings

Figure 1 is an exploded view of a high-power electronic switch controlled by a stepper motor.

Figure 2 is an exploded view of a high-power electronic switch based on stepper motor control.

Figure 3 is an exploded view of a high-power electronic switch based on stepper motor control.

Figure 4 is an exploded view of a high-power electronic switch controlled by a stepper motor.

Figure 5 is an exploded view of a high-power electronic switch based on stepper motor control.

Fig. 6 is a structural diagram of the main body of the electronic switch.

Fig. 7 is a schematic diagram of the structure of the main body of the electronic switch.

Fig. 8 is a structural diagram of the main body of the electronic switch.

Fig. 9 is a structural diagram of the main body of the electronic switch.

Fig. 10 is a schematic diagram of the structure of the main body of the electronic switch.

Fig. 11 is a schematic diagram of the structure of the main body of the electronic switch.

Symbol description of main components

特厚载流静触点导电弹片Extra-thick current-carrying static contact conductive shrapnel	11
第一银触点 First silver contact	1111
第一自由端First free end	1212
特厚载流动触点导电弹片Ultra-thick conductive shrapnel for mobile contacts	22
第二银触点Second silver contact	21twenty one
限位凸起部分Limiting raised part	22twenty two
第二自由端Second free end	23twenty three
L形导电弹片固定板L-shaped conductive shrapnel fixing plate	33
步进电机 Stepper motor	44
第一控制线 First control line	4141
第一接线端子The first terminal	4242
电机轴 Motor shaft	4343
摆臂 Swing arm	4444
第一位置 First position	441441
第二位置 Second position	442442
霍尔元件 Hall element	4545
第二控制线 Second control line	4646
第二接线端子 Second terminal	4747
PCB板 PCB board	55
接线插座 Wiring socket	5151
按键 button	5252
WIFI信号指示圈WIFI signal indicator circle	5353
防火开关 Fire switch	5454
塑料基座 Plastic base	66
第一附加固定块The first additional fixed block	6161
第二附加固定块Second additional fixed block	6262
第三附加固定块Third additional fixed block	6363
第四附加固定块Fourth additional fixed block	6464
第一线卡 First line card	6565
第二线卡Second line card	6666
第一围栏 First fence	6767
压线端子 Crimp terminal	77
第一压线端子First crimping terminal	7171
第二压线端子 Second crimping terminal	7272
第三压线端子Third crimping terminal	7373

第四压线端子Fourth crimping terminal	7474
固定盒 Fixed box	88
圆形穿孔 Circular perforation	8181
WIFI穿孔 WIFI perforation	8282
挡片 Baffle	8383
第二围栏 Second fence	8484
圆形固定孔 Round fixing hole	8585
第一圆形固定孔The first round fixing hole	851851
第二圆形固定孔Second round fixing hole	852852
第三圆形固定孔The third round fixing hole	853853
第四圆形固定孔The fourth round fixing hole	854854
压线端子围栏 Crimp terminal fence	8686
长方形固定孔Rectangular fixing hole	8787
第一长方形固定孔The first rectangular fixing hole	871871
第二长方形固定孔Second rectangular fixing hole	872872
第三长方形固定孔The third rectangular fixing hole	873873
第四长方形固定孔Fourth rectangular fixing hole	874874
定位柱 Positioning column	8888
凹陷区 Depression area	8989
保护壳Protective shell	99
上盖Upper cover	9191
第一固定轴First fixed shaft	911911
第二固定轴Second fixed shaft	912912
卡扣架 Snap frame	913913
下盖 lower lid	9292
第一轴套The first sleeve	921921
第二轴套 Second sleeve	922922
卡扣 Snap	923923
卡槽 Card slot	924924
卡勾The hook	925925
螺钉柱固定孔Screw post fixing hole	926926

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

Specific implementation case 1:

Figures 1 to 4 are exploded diagrams of high-power electronic switches based on stepper motor control, and Figures 6 to 11 are schematic diagrams of the structure of the main body of the electronic switch. A high-power electronic switch based on stepping motor control, which includes: an electronic switch main body and a fixed box 8. The electronic switch main body includes an extra-thick current-carrying static contact conductive shrapnel 1, an extra-thick current-carrying current-carrying contact conductive shrapnel 2, L -Shaped conductive shrapnel fixing plate 3, PCB board 5, and plastic base 6, which are characterized in that they also include a stepping motor 4 and a Hall element 45. The stepping motor 4 is electrically connected to the PCB board 5, and the stepping motor 4 is electrically connected to the Hall element. The Hall element 45 is electrically connected, the Hall element 45 is electrically connected to the PCB board 5, the power line of the PCB board 5 can be electrically connected to the load, and the number of the L-shaped conductive spring fixing plate 3 is at least two, and two L The fixed plates 3 of the conductive spring are respectively fixed on the first surface of the plastic base 6, and one end of the conductive spring 1 of the extra-thick current-carrying contact is fixed on one of the fixed plates 3 of the L-shaped conductive spring by screws. The free end of the contact conductive shrapnel 1 is provided with a first silver contact 11, and one end of the ultra-thick conductive shrapnel 2 of the ultra-thick mobile contact is fixed to another L-shaped conductive shrapnel fixing plate 3 by screws, and the ultra-thick conductive shrapnel for the mobile contact is fixed The free end of 2 is provided with a second silver contact 21, the middle position of the ultra-thick load current contact conductive spring 2 is provided with a limiting protrusion 22, the stepping motor 4 is fixed on the plastic base 6, and the stepping motor 4 A swing arm 44 is sleeved on the outside of the motor shaft 43. The swing arm 44 can resist the limiting protrusion 22 during the rotation of the motor shaft 43. When the swing arm 44 is in the first position 441, the extra-heavy load flow touches The point conductive spring 2 is in an unstressed state, the extra thick current-carrying contact conductive spring 2 is separated from the extra thick current-carrying static contact conductive spring 1, and the entire circuit of the switch is disconnected. When the swing arm 44 is in the second position 442 When the second silver contact 21 of the extra-thick current-carrying contact conductive spring 2 is forced to run to contact with the first silver contact 11 of the extra-thick current-carrying static contact conductive spring 1, the entire circuit of the switch is turned on; The fixed box 8 includes a side surface and a top surface. The side surface is composed of two opposite rectangles, and one surface of the rectangle is fixedly connected with the top surface. The top surface is provided with a second fence 84 on the plane close to the side surface. The second fence 84 and the side surface are formed A protection fence is used to fix and protect the stepping motor 4 and the crimping terminal fence 86. The crimping terminal fence 86 passes through the crimping terminal 7, and a circular fixing hole 85 is provided on the top surface. The position of the fixing hole 85 is located directly above the wire terminal fence 86, a rectangular fixing hole 87 is provided on the side, and the rectangular fixing hole 87 is located just below the wire terminal fence 86. A plurality of positioning posts 88 are provided on the top surface. It is used for matching with the positioning post on the plastic base 6 so that the main body of the electronic switch and the fixing box 8 can be fixedly connected.

A fire switch 54 is welded on the surface of the PCB board 5; the limiting protrusion 22 adopts a rhombus structure, so that the swing arm 44 can just resist the limiting protrusion 22 and drive the ultra-thick flow contact conductive shrapnel 2 to one end The screw is used as a fulcrum to rotate; the first free end 12 of the L-shaped conductive spring fixing plate connected with the extra thick current-carrying static contact conductive spring 1 is provided with a first crimping terminal 71, and the extra thick current-carrying contact conductive spring 2 The second free end 23 of the connected L-shaped conductive spring fixing plate is provided with a second crimping terminal 72. The second crimping terminal 72 and the third crimping terminal 73 are respectively connected to a neutral wire and a live wire, and the neutral wire and The position of the live wire can be interchanged, and the neutral wire and the live wire are connected to the PCB board 5 respectively to provide power to the electronic switch; the plastic base 6 is also provided with two metal sheets, one end of the two metal sheets They are respectively connected to the PCB board 5 through a neutral wire and a live wire. The other ends of the two metal sheets are respectively provided with a second crimping terminal 72 and a third crimping terminal 73, the second crimping terminal and the third crimping terminal A neutral wire and a live wire are respectively passed through the line terminals, the positions of the neutral wire and the live wire can be exchanged, and the neutral wire and the live wire are connected to the power supply of the load. The number of circular fixing holes 85 on the fixing box 8 is four, which are a first circular fixing hole 851, a second circular fixing hole 852, a third circular fixing hole 853, and a fourth circular fixing hole 854, respectively. The number of rectangular fixing holes 87 is also four, which are the first rectangular fixing hole 871, the second rectangular fixing hole 872, the third rectangular fixing hole 873, and the fourth rectangular fixing hole 874, and the first circular fixing hole 851, the first round fixing hole 851, the second rectangular fixing hole 872, the third rectangular fixing hole 873, and the fourth rectangular fixing hole 874. One rectangular fixing hole 871, the first crimping terminal 71 and the crimping terminal fence 86 correspond one by one, and so on, the other round fixing holes 85, the rectangular fixing hole 87, the crimping terminal 7 and the crimping terminal fence 86 are all One-to-one correspondence.

The stepping motor 4 is electrically connected to the PCB board 5 through the first control line 41. The free end of the first control line 41 is provided with a first connection terminal 42 which can be inserted into the connection socket 51. The Hall element 45 is electrically connected to the PCB board 5 through the second control line 46. The free end of the second control line 46 is provided with a second connection terminal 47. The second connection terminal 47 can be inserted into the connection socket 51. The connection socket 51 is welded The swing arm 44 includes a central cylinder and a raised structure, and the raised structure is located on one side of the central cylinder, which facilitates the movement of the limiting raised portion 22.

The PCB board 5 is connected to the button 52. The button 52 is used to input signals. The PCB board sends signals to the Hall element 45 and the stepping motor 4. The Hall element 45 controls the forward and reverse rotation of the stepping motor 4 to realize the switch The conduction and disconnection of the circuit. The PCB board 5 is connected to the WIFI signal indicating ring 53 for displaying whether the electronic switch is successfully connected to the WIFI signal.

In order to increase the stability of the extra-thick current-carrying static contact conductive shrapnel 1, a first additional fixing block 61 and a second additional fixing block 62 are added on both sides of the upright part of the extra-thick current-carrying static contact conductive shrapnel 1. In order to increase the stability of the conductive elastic sheet 2 of the ultra-thick load mobile contact, a third additional fixing block 63 and a fourth additional fixing block 64 are added on both sides of the erected portion of the conductive elastic sheet 2 of the ultra-thick load mobile contact.

The main body of the stepper motor 4 is provided with two screw holes, which can fix the main body of the stepper motor 4 on one surface of the plastic base 6, and the motor shaft 43 of the stepper motor 4 is located on the other surface of the plastic base 6. This helps to save space.

A first fence 67 is provided on the surface of the plastic base 6 away from the top surface of the fixed box 8. The first fence 67 surrounds the main body of the stepping motor 4, and both ends of the first fence 67 are respectively provided with first wire clips 65 and the second line card 66, the first line card 65 and the second line card 66 can pass through the first control line 41 of the stepper motor 4, so that the first control line of the stepper motor 4 can be isolated and protected by the first fence 67 Line 41, and make the first control line 41 neat. The top surface of the fixed box 8 is provided with a circular perforation 81 for passing through the button 52, and the button 52 can be pressed or ejected in the circular perforation 81; the top surface of the fixed box 8 is provided with a WIFI perforation 82, so that The WIFI signal indicator ring can be embedded in it.

Specific implementation case 2:

As shown in Figure 5, it is an exploded view of a high-power electronic switch controlled by a stepper motor. The difference from specific implementation case 1 is that the high-power electronic switch based on stepper motor control also includes a protective shell 9. The protective shell 9 includes an upper cover 91 and a lower cover 92, and a first fixed shaft 911 is provided on the side of the upper cover 91 And the second fixed shaft 912, the side of the lower cover 92 is provided with a first sleeve 921 and a second sleeve 922, the first fixed shaft 911 passes through the first sleeve 921, and the second fixed shaft 912 passes through the second shaft The first fixed shaft 911 and the second fixed shaft 912 rotate synchronously in the first shaft sleeve 921 and the second shaft sleeve 922, so that the upper cover 91 and the lower cover 92 can be opened and closed, and the other one of the upper cover 91 A buckle frame 913 is provided on the side surface, and a buckle 923 is provided on the other side surface of the lower cover 92. When the upper cover 91 and the lower cover 92 are closed, the buckle 923 passes through the buckle frame 913 and is fixed.

The inner surface of the lower cover 92 of the protective shell 9 is provided with a plurality of locking grooves 924 and hooks 925, which can be snapped and fixed with the recessed area 89 outside the side surface of the fixing box 8. The inner surface of the bottom surface of the lower cover 92 of the protective shell 9 There are a plurality of screw post fixing holes 926 for connecting with screw posts on the surface of the plastic base 6 away from the fixing box 8 so that the entire electronic switch can be fixed inside the protective shell 9.

The lower cover 92 of the protective shell 9 is provided with a plurality of tapable holes for passing through the control wire, so that the high-power electronic switch based on the stepping motor control can be applied to the outdoor environment.

In summary, the working principle of the high-power electronic switch based on stepper motor control in specific implementation case 1 and specific implementation case 2 is as follows: In the first working mode, the button 52 sends a signal to the PCB board 5, and the PCB board 5 passes The first control line 41 and the second control line 46 send signals to control the stepping motor 4 and the Hall element 45, so that the Hall element 45 controls the forward or reverse rotation of the stepping motor 4, so that the motor shaft 43 of the stepping motor 4 The externally sleeved swing arm 44 moves from the first position 441 to the second position 442. At this time, the swing arm 44 drives the limiting protrusion 22 of the conductive spring 2 of the ultra-thick load mobile contact to move, thereby causing the ultra-thick load mobile contact to move. The second silver contact 21 of the point conductive spring 2 can be in contact with the first silver contact 11 of the extra-thick current-carrying static contact conductive spring 1. At this time, the circuit of the entire electronic switch is turned on and connected to the fourth crimping terminal 74 The control line of the input control signal, the control line connected to the first crimping terminal 71 outputs the control signal, so that the load starts to work;

The above-mentioned embodiments only express several implementation modes of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A high-power electronic switch based on stepping motor control, which includes: an electronic switch main body and a fixed box (8). The electronic switch main body includes an extra-thick current-carrying static contact conductive shrapnel (1) and an extra-thick current-carrying static contact conductive shrapnel (1). The shrapnel (2), the L-shaped conductive shrapnel fixing plate (3), the PCB board (5), and the plastic base (6) are characterized in that they also include a stepping motor (4) and a Hall element (45). The motor (4) is electrically connected to the PCB board (5), the stepping motor (4) is electrically connected to the Hall element (45), the Hall element (45) is electrically connected to the PCB board (5), and the PCB board ( 5) The power cord can be electrically connected to the load, the number of L-shaped conductive shrapnel fixing plates (3) is at least two, and the two L-shaped conductive shrapnel fixing plates (3) are respectively fixed on the plastic base (6). On the first surface, one end of the conductive shrapnel (1) of the extra-thick current-carrying static contact is screwed to one of the L-shaped conductive shrapnel fixing plates (3), and the free end of the extra-thick current-carrying static contact conductive shrapnel (1) Set the first silver contact (11), one end of the extra-thick mobile contact conductive shrapnel (2) is fixed to the other L-shaped conductive shrapnel fixing plate (3) by screws, and the extra-thick mobile contact conductive shrapnel (2) The free end of) is provided with a second silver contact (21), the middle position of the conductive shrapnel (2) of the extra-thick load flow contact is provided with a limiting protrusion (22), and the stepping motor (4) is fixed on the plastic base (6), and the outer of the motor shaft (43) of the stepping motor (4) is sleeved with a swing arm (44), the swing arm (44) can resist the limit convex during the rotation of the motor shaft (43) When the swing arm (44) is located at the first position (44)1, the lifting part (22), the extra-thick conductive shrapnel (2) of the mobile contact is in a non-stressed state, and the extra-thick conductive shrapnel (2) is the mobile contact The conductive shrapnel (1) of the extra-thick current-carrying static contact is separated, and the entire circuit of the switch is disconnected. When the swing arm (44) is in the second position (442), the extra-thick current-carrying contact shrapnel (2) is The second silver contact (21) is forced to run until it comes into contact with the first silver contact (11) of the extra-thick current-carrying static contact conductive shrapnel (1), and the entire circuit of the switch is turned on; the fixed box (8) It includes a side surface and a top surface. The side surface is composed of two opposite rectangles, and one surface of the rectangle is fixedly connected with the top surface. The top surface is close to the side surface with a second fence (84), a second fence (84) and a side surface. A protection fence is formed to fix and protect the stepper motor (4) and the crimp terminal fence (86). The crimp terminal fence (86) passes through the crimp terminal (7), and the top surface is set There is a round fixing hole (85), the position of the round fixing hole (85) is located directly above the crimping terminal fence (86), a rectangular fixing hole (87) is provided on the side, and the rectangular fixing hole (87) is just at the pressure Directly below the wire terminal fence (86), there are multiple positioning posts (88) on the top surface for matching with the positioning posts on the plastic base (6), so that the main body of the electronic switch and the fixing box (8) can Fixed connection.
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that: a fireproof switch (54) is welded on the surface of the PCB (5).
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that: the limiting protrusion (22) adopts a rhombus structure, so that the swing arm (44) can just resist the limiting protrusion ( 22), and drive the ultra-thick load flow contact conductive shrapnel (2) to rotate with a screw at one end as a fulcrum; the swing arm (44) includes a central cylinder and a convex structure, and the convex structure is located on one side of the central cylinder. It is beneficial to toggle the limiting protrusion (22).
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that: the first free end (12) of the L-shaped conductive spring fixing plate connected with the extra-thick current-carrying static contact conductive spring (1) ) Is provided with a first crimping terminal (71), and the second free end (23) of the L-shaped conductive elastic piece fixing plate connected with the extra-thick load mobile contact conductive elastic piece (2) is provided with a second crimping terminal (72) , The first crimping terminal (71) and the fourth crimping terminal (74) are respectively connected to a neutral wire and a live wire, the positions of the neutral wire and the live wire can be exchanged, and the neutral wire and the live wire are connected to the PCB board (5) Connected separately to provide power to the electronic switch; the plastic base (6) is also provided with two metal sheets, one end of the two metal sheets is connected to the PCB board through a neutral wire and a live wire respectively ( 5) Connection, the other ends of the two metal sheets are respectively provided with a second crimping terminal (72) and a third crimping terminal (73), and a zero is passed through the second crimping terminal and the third crimping terminal. Wire and a live wire, the positions of the neutral wire and the live wire can be interchanged, and the neutral wire and the live wire are connected to the power supply of the load; the number of the circular fixing holes (85) on the fixing box (8) is four, The number of rectangular fixing holes (87) is also four, and the circular fixing holes (85), the rectangular fixing holes (87), the crimping terminal (7) and the crimping terminal fence (86) are in one-to-one correspondence.
The high-power electronic switch based on stepper motor control according to claim 1, characterized in that: the stepper motor (4) is electrically connected to the PCB board (5) through a first control line (41), and the first control line ( The free end of 41) is provided with a first connection terminal (42), the first connection terminal (42) can be inserted into the connection socket (51), and the Hall element (45) is connected to the PCB board ( 5) Electrical connection, the free end of the second control wire (46) is provided with a second terminal (47), the second terminal (47) can be inserted into the wiring socket (51), and the wiring socket (51) is welded The way is fixed on the PCB board.
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that: the PCB board (5) is connected with the button (52), the PCB board (5) is connected with the WIFI signal indicating ring (53); the fixed box The top surface of (8) is provided with a circular perforation (81) for passing through the button (52), the button (52) can be pressed or ejected in the circular perforation (81); the fixing box (8) A WIFI perforation (82) is provided on the top surface, so that the WIFI signal indicating ring can be embedded in it.
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that: first additional fixing blocks ( 61) and the second additional fixing block (62); in order to increase the stability of the extra-thick load-carrying conductive shrapnel (2), a second additional piece is added on both sides of the upright part of the extra-thick load-carrying conductive shrapnel 2 respectively Three additional fixed blocks (63) and a fourth additional fixed block (64).
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that: the main body of the stepping motor (4) is provided with two screw holes, and the main body of the stepping motor (4) can be fixed on the plastic On one surface of the base (6), the motor shaft (43) of the stepping motor (4) is located on the other surface of the plastic base (6).
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that: the surface of the plastic base (6) away from the top surface of the fixed box (8) is provided with a first fence (67), and the first fence (67) is provided on the surface of the plastic base (6) away from the top surface of the fixed box (8). The fence (67) encloses the main body of the stepper motor (4). The two ends of the first fence (67) are respectively provided with a first line card (65) and a second line card (66). The first line card (65) ) And the second line card (66) can pass through the first control line (41) of the stepper motor (4).
The high-power electronic switch based on stepping motor control according to claim 1, characterized in that it further comprises a protective shell (9), the protective shell (9) includes an upper cover (91) and a lower cover (92), and an upper cover (9). The side of 91) is provided with a first fixed shaft (911) and a second fixed shaft (912), and the side of the lower cover (92) is provided with a first sleeve (921) and a second sleeve (922). A fixed shaft (911) passes through the first sleeve (921), the second fixed shaft (912) passes through the second sleeve (922), and the first fixed shaft (911) and the second fixed shaft (912) are synchronized Rotate in the first shaft sleeve (921) and the second shaft sleeve (922) so that the upper cover (91) and the lower cover (92) can be opened and closed, and the other side of the upper cover (91) is provided with a buckle The other side of the lower cover (92) is provided with a buckle (923). When the upper cover (91) and the lower cover (92) are closed, the buckle (923) passes through the buckle frame (913). ) And fixed; the inner side of the lower cover (92) of the protective shell (9) is provided with a plurality of clamping slots (924) and hooks (925), which can be connected with the recessed area (89) outside the side surface of the fixing box (8) ) Snap and fix, the bottom inner surface of the lower cover (92) of the protective shell (9) is provided with a plurality of screw column fixing holes (926) for connecting with the plastic base (6) away from the fixing box (8) The screw column connection on the surface enables the entire electronic switch to be fixed inside the protective shell (9); the lower cover (92) of the protective shell (9) is provided with a plurality of knockable holes for passing through the control wire.