Safety protection type electric knife switch

Abstract

The invention is suitable for the technical field of electric knife switches, and provides a safety protection type electric knife switch, which comprises a base and a protective cover, the device further comprises a connecting module, the connecting module comprises a wiring board, a mounting frame is arranged at the wiring board, a pressing and fixing unit is arranged on one side of the mounting frame, a mounting rotating disc is mounted in the mounting frame, and two winding rods are symmetrically arranged at the bottom of the mounting rotating disc; the driving unit comprises a guide sleeve, a connecting column is arranged in the guide sleeve, an adjusting turntable is mounted on the connecting column, two guide columns are symmetrically arranged on the side wall of the adjusting turntable, and a spiral guide groove is formed in the inner wall of the guide sleeve; and an adjusting unit. The device is simple in operation, is very convenient in installation and later maintenance, and effectively improves the use convenience of the electric knife switch. And meanwhile, the wiring end can be reinforced, so that the protection effect is improved, and the connection stability is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of electric knife switches, and in particular relates to a safety protection type electric knife switch. Background Art

[0002] A power knife switch, also known as an isolating switch or knife switch, is a manually operated electrical device in a power system. It is mainly used to connect or disconnect the circuit under no-load or light-load conditions, thereby providing an obvious disconnection point when maintaining, repairing or inspecting electrical equipment, thereby ensuring the safety of workers.

[0003] When using existing power switches, external wires are usually directly connected to the terminals on the switch, and the wires are fixed only by screws on the terminals. When the wires are pulled externally, the traction force generated will directly act on the connection between the wires and the terminals, which can easily lead to loose connections. In addition, during the wiring process, operators need to screw screws to disconnect and connect wires, making the installation process more cumbersome. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a safety protection type power switch, aiming to solve the problems raised in the above background technology.

[0005] The embodiment of the present invention is implemented as follows: a safety protection type power switch includes a base, a protective cover is detachably mounted on the base, a power line terminal and a switch are also mounted on the base, and the power line terminal is provided with a plurality of arms, and the number of the switch arms is the same as the number of the power line terminals; and further includes: A connection module, wherein the connection module comprises a plurality of wiring boards mounted on a base, and the number of the wiring boards is the same as the number of power line terminals, each of the wiring boards is connected to a corresponding arm of the switch, a mounting frame is provided at the wiring board, a pressing unit for fixing the wire by pressing is provided on one side of the mounting frame close to the incoming wire end, a mounting turntable is rotatably installed in the mounting frame, and two winding rods are symmetrically provided at the bottom of the mounting turntable; A driving unit, the driving unit comprising a guide sleeve mounted on a mounting frame, a connecting column being arranged in the guide sleeve, and the connecting column being mounted on the top of a mounting turntable, an adjusting turntable being slidably mounted on the connecting column in a vertical direction, and the adjusting turntable and the connecting column being connected via a sliding key, a first spring being further arranged between the adjusting turntable and the mounting frame, two guide columns being symmetrically arranged on a side wall of the adjusting turntable, and a spiral guide groove matching the guide column being arranged on an inner wall of the guide sleeve; The adjusting unit is installed on the inner side of the protective cover, and a group of adjusting units are arranged at the position corresponding to each of the terminal blocks. When the protective cover is installed on the base, the adjusting unit will push the guide sleeve to the side close to the mounting turntable, and simultaneously push the pressing unit to press the wires onto the terminal block.

[0006] According to a further technical solution, the pressing unit includes a sliding rod and a pressing block, the sliding rod is installed on the base, and the two sliding rods are symmetrically distributed on both sides of the terminal block, the two ends of the pressing block are respectively slidably installed on a sliding rod, and a second spring is also arranged between the pressing block and the base, and a pressing groove is opened on the bottom surface of the pressing block.

[0007] According to a further technical solution, the adjustment unit comprises a connecting plate installed on the inner side of the protective cover, and a pressure rod and a pressing sleeve are installed on the connecting plate.

[0008] According to a further technical solution, each of the connecting plates is installed on the inner side of the protective cover through a set of control components, and the control components drive the connecting plates to move linearly along the axial direction of the connecting column.

[0009] A further technical solution is that the control component includes an adjusting screw and a guide rod, the adjusting screw is installed on the inner side of the protective cover, and the connecting plate is slidably installed on the adjusting screw, the guide rod passes through the protective cover, and the protective cover is provided with a threaded hole matching the guide rod, and the end of the guide rod located on the inner side of the protective cover is rotatably installed on the connecting plate.

[0010] According to a further technical solution, a placement groove is provided on the upper surface of each of the wiring boards.

[0011] According to a further technical solution, a plurality of line inlet bushings are arranged at one end of the protective cover close to the terminal block, respectively corresponding to each terminal block.

[0012] According to a further technical solution, a first indicator line and a second indicator line are further provided at the edge of the side wall of the base, and the distance between the first indicator line and the second indicator line is used to indicate the stripping length of the wire terminal.

[0013] A safety protection type electric switch provided by an embodiment of the present invention, when in use, each power line terminal is used to connect the power supply end respectively. Then the end of the wire to be connected is peeled and placed between two winding rods at the designated wiring board. Then the protective cover only needs to be installed on the base. In the process of installing the protective cover on the base, the pressing sleeve will abut against the adjustment dial, and the pressing rod will abut against the pressing block. As the protective cover is installed in place, the connecting plate will drive the pressing rod and the pressing sleeve to move to the side close to the wiring board. The adjusting dial is pushed to move to the side close to the installation dial by the pressing sleeve. During this process, the guide column will slide along the spiral guide groove, so that the adjusting dial rotates, and the adjusting dial can drive the installation dial to rotate synchronously through the connecting column, and the installation dial drives the winding rod to rotate synchronously, so that the end of the wire is wound on the two winding rods. At the same time, the pressing rod will push the pressing block to move to the side close to the wiring board, so that the wire is clamped on the wiring board through the pressing groove on the pressing block, and the power connection operation is completed. When the wire is pulled from the outside, the point of action will be at the compression block, thus preventing the external force from acting directly on the connection between the wire and the winding rod. Later, the power on and off can be controlled by simply turning the switch. The device is easy to operate, and installation and subsequent maintenance are very convenient, which effectively improves the convenience of using the power switch. At the same time, the terminal can also be reinforced to improve the protection effect and ensure the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a safety protection type power switch provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a safety protection type power switch with the protective cover removed provided by an embodiment of the present invention; Figure 3 for Figure 2 A in the enlarged view; Figure 4 A schematic diagram of the structure of a connection module in a safety protection type power switch provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of a guide sleeve in a safety protection type electric switch provided by an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a protective cover in a safety protection type power switch provided by an embodiment of the present invention; Figure 7 for Figure 6 The enlarged view of point B in the figure; Figure 8 for Figure 2 Enlarged view of point C in the figure.

[0015] In the accompanying drawings: base 1; protective cover 11; incoming line bushing 111; power line terminal 12; switch knife 13; first indicator line 14; second indicator line 15; connection module 2; mounting frame 21; mounting turntable 22; winding rod 23; terminal block 24; placement groove 241; drive unit 3; guide sleeve 31; spiral guide groove 311; adjustment turntable 32; guide column 321; connecting column 33; first spring 34; pressing unit 4; sliding rod 41; pressing block 42; pressing groove 421; second spring 43; adjusting unit 5; connecting plate 51; pressing rod 52; pressing sleeve 53; control component 6; adjusting screw 61; guide rod 62. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0018] like Figure 1-Figure 5 As shown, a safety protection type power switch provided by an embodiment of the present invention comprises a base 1, a protective cover 11 is detachably mounted on the base 1, a power line terminal 12 and a switch 13 are also mounted on the base 1, and the power line terminal 12 is provided with a plurality of arms, and the number of arms of the switch 13 is the same as the number of the power line terminal 12; and further comprises: A connection module 2, wherein the connection module 2 comprises a plurality of wiring boards 24 mounted on the base 1, and the number of the wiring boards 24 is the same as the number of the power line terminals 12, each of the wiring boards 24 is connected to a corresponding arm of the switch 13, and a mounting frame 21 is provided at the wiring board 24, and a pressing unit 4 for fixing the wire by pressing is provided on one side of the mounting frame 21 close to the incoming wire end, and a mounting turntable 22 is rotatably installed in the mounting frame 21, and two winding rods 23 are symmetrically provided at the bottom of the mounting turntable 22; A driving unit 3, wherein the driving unit 3 comprises a guide sleeve 31 mounted on the mounting frame 21, wherein a connecting column 33 is arranged in the guide sleeve 31, and the connecting column 33 is mounted on the top of the mounting turntable 22, an adjusting turntable 32 is slidably mounted on the connecting column 33 in a vertical direction, and the adjusting turntable 32 and the connecting column 33 are connected by a sliding key, and a first spring 34 is further arranged between the adjusting turntable 32 and the mounting frame 21, two guide columns 321 are symmetrically arranged on the side wall of the adjusting turntable 32, and a spiral guide groove 311 matching the guide column 321 is opened on the inner wall of the guide sleeve 31; The adjusting unit 5 is installed on the inner side of the protective cover 11, and a group of adjusting units 5 are provided at the position corresponding to each of the terminal blocks 24. When the protective cover 11 is installed on the base 1, the adjusting unit 5 will push the guide sleeve 31 to the side close to the mounting turntable 22, and simultaneously push the pressing unit 4 to press the wires onto the terminal block 24.

[0019] In the embodiment of the present invention, the number of the power line terminal 12 and the terminal block 24 can be flexibly set according to different types, and can be two or three. When in use, each power line terminal 12 is used to connect the power supply end. Then the end of the wire to be connected is peeled and placed between the two winding rods 23 at the designated terminal block 24. Then the protective cover 11 only needs to be installed on the base 1. In the process of installing the protective cover 11 on the base 1, the adjustment unit 5 will push the adjustment dial 32 to slide along the axial direction of the connecting column 33 to the side close to the installation dial 22. In this process, the guide column 321 will slide along the spiral guide groove 311, so that the adjustment dial 32 rotates, and the adjustment dial 32 can drive the installation dial 22 to rotate synchronously through the connecting column 33, and the installation dial 22 drives the winding rod 23 to rotate synchronously, so that the end of the wire is wound on the two winding rods 23. At the same time, the adjustment unit 5 will push the pressing unit 4 to move to the side close to the terminal block 24, so that the wire is clamped on the terminal block 24, that is, the power connection operation is completed. Subsequently, the power-on and power-off control can be realized by simply turning the switch 13.

[0020] like Figure 2 and 3 As shown, as a preferred embodiment of the present invention, the pressing unit 4 includes a sliding rod 41 and a pressing block 42, the sliding rod 41 is installed on the base 1, and the two sliding rods 41 are symmetrically distributed on both sides of the terminal board 24, the two ends of the pressing block 42 are respectively slidably installed on a sliding rod 41, and a second spring 43 is also arranged between the pressing block 42 and the base 1, and a pressing groove 421 is opened on the bottom surface of the pressing block 42.

[0021] In the embodiment of the present invention, when no external force is applied, the elastic force of the second spring 43 causes the compression block 42 to be located at the upper limit position. When the protective cover 11 is mounted on the base 1, the adjustment unit 5 pushes the compression block 42 to slide toward the side close to the terminal block 24, thereby clamping the wires on the terminal block 24 through the pressing groove 421 on the compression block 42. When the wires are pulled from the outside, the point of action will be at the compression block 42, thereby preventing the external force from directly acting on the connection between the wires and the winding rod 23. When the wires are to be removed, it is only necessary to release the pressing action of the adjustment unit 5 on the compression block 42, and the elastic restoring force of the second spring 43 will push the compression block 42 to move toward the side away from the terminal block 24, thereby automatically releasing the pressing action on the wires.

[0022] like Figure 2 and Figure 3 As shown, as a preferred embodiment of the present invention, the adjustment unit 5 includes a connecting plate 51 installed on the inner side of the protective cover 11 , and a pressing rod 52 and a pressing sleeve 53 are installed on the connecting plate 51 .

[0023] In the embodiment of the present invention, when the protective cover 11 is installed on the base 1, the pressing sleeve 53 will abut against the adjusting dial 32, and the pressing rod 52 will abut against the pressing block 42. As the protective cover 11 is installed in place, the connecting plate 51 will drive the pressing rod 52 and the pressing sleeve 53 to move toward the side close to the wiring board 24. In this process, the pressing sleeve 53 will push the adjusting dial 32 to move toward the side close to the installation dial 22, thereby driving the installation dial 22 to rotate; the pressing rod 52 will push the pressing block 42 to move toward the side close to the wiring board 24, thereby clamping the wires on the wiring board 24.

[0024] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, as a preferred embodiment of the present invention, each of the connecting plates 51 is installed on the inner side of the protective cover 11 through a group of control components 6, and the control components 6 drive the connecting plates 51 to move linearly along the axial direction of the connecting column 33.

[0025] In the embodiment of the present invention, after the protective cover 11 is installed on the base 1, if the designated wire needs to be removed and replaced, there is no need to remove the protective cover 11 from the base 1. The control component 6 can be used to drive the connecting plate 51 at the wire to move to the side away from the mounting frame 21, so that the group of adjustment units 5 releases the pressing action on the adjustment dial 32 and the pressing block 42. Correspondingly, the pressing unit 4 will release the fixation of the wire, and the connecting module 2 will no longer wrap the end of the wire. The operator only needs to pull it lightly to remove the wire. When installing it later, it is only necessary to insert the wire into place and then adjust the control component 6.

[0026] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, as a preferred embodiment of the present invention, the control component 6 includes an adjusting screw 61 and a guide rod 62, the adjusting screw 61 is installed on the inner side of the protective cover 11, and the connecting plate 51 is slidably installed on the adjusting screw 61, the guide rod 62 passes through the protective cover 11, and the protective cover 11 is provided with a threaded hole matching the guide rod 62, and the end of the guide rod 62 located on the inner side of the protective cover 11 is rotatably installed on the connecting plate 51.

[0027] In the embodiment of the present invention, in the initial state, the guide rod 62 is completely tightened on the protective cover 11. When the designated wire is to be removed and replaced, the guide rod 62 only needs to be screwed in the opposite direction. Under the guidance of the adjusting screw 61, the guide rod 62 can drive the connecting plate 51 to move to the side away from the adjusting dial 32, so that the group of adjusting units 5 releases the pressing effect on the adjusting dial 32 and the pressing block 42. Through the elastic restoring force of the first spring 34 and the second spring 43, the adjusting dial 32 and the pressing block 42 can be restored to the initial position.

[0028] like Figure 4 As shown, as a preferred embodiment of the present invention, the upper surface of each of the wiring boards 24 is further provided with a placement groove 241. The placement groove 241 can provide guidance for the wires when plugging in the wires, and can also cooperate with the pressing groove 421 to stably clamp the wires to prevent the wiring terminals of the wires from shaking at will.

[0029] like Figure 1 As shown in the figure, as a preferred embodiment of the present invention, a plurality of wire inlet bushings 111 are provided at one end of the protective cover 11 close to the wiring board 24, respectively corresponding to each wiring board 24. The wire inlet bushings 111 can allow the wires to enter (or leave) the protective cover 11 in only one direction. Compared with just opening a hole in the protective cover 11, the wire inlet bushings 111 can effectively prevent the wires from shaking randomly during the wiring process, thereby improving the wiring efficiency.

[0030] It is necessary to additionally explain that, at the time of initial wiring, the wires must first be inserted from a designated position at the end of the protective cover 11 and then placed between the two winding rods 23 at the corresponding wiring board 24 .

[0031] like Figure 2 and Figure 8 As shown in the figure, as a preferred embodiment of the present invention, the side wall edge of the base 1 is also provided with a first indicator line 14 and a second indicator line 15. When in use, the distance between the second indicator line 15 and the first indicator line 14 (i.e. Figure 8 x1) is the length of the wire end to be stripped, and the distance from the second indicator line 15 to the nearest corner (i.e. Figure 8 x1+x2) in the figure is the length of the wire end that needs to be inserted into the protective cover 11, and the x2 segment is an area reserved for matching the pressing unit 4. By providing the indicator line, it is convenient for operators to strip and install the wires reasonably during wiring, thereby improving the convenience of operation.

[0032] Working principle: When in use, each power line terminal 12 is used to connect the power supply end. Then the end of the wire to be connected is peeled and placed between the two winding rods 23 at the designated terminal block 24. Then the protective cover 11 only needs to be installed on the base 1. In the process of installing the protective cover 11 on the base 1, the pressing sleeve 53 will abut against the adjustment dial 32, and the pressure rod 52 will abut against the pressing block 42. As the protective cover 11 is installed in place, the connecting plate 51 will drive the pressure rod 52 and the pressing sleeve 53 to move toward the side close to the terminal block 24. The adjusting dial 32 is pushed to move toward the side close to the installation dial 22 by the pressing sleeve 53. In this process, the guide column 321 will slide along the spiral guide groove 311, so that the adjusting dial 32 rotates, and the adjusting dial 32 can drive the installation dial 22 to rotate synchronously through the connecting column 33, and the installation dial 22 drives the winding rod 23 to rotate synchronously, so that the end of the wire is wound onto the two winding rods 23. At the same time, the pressure rod 52 pushes the pressing block 42 to move toward the side close to the terminal board 24, so that the wire is clamped on the terminal board 24 through the pressing groove 421 on the pressing block 42, and the power connection operation is completed. When the wire is pulled from the outside, the point of action will be at the pressing block 42, thereby preventing the external force from directly acting on the connection between the wire and the winding rod 23. Subsequently, the power on and off control can be achieved by simply turning the switch 13.

[0033] In addition, after the protective cover 11 is installed on the base 1, if the designated wire needs to be removed and replaced, there is no need to remove the protective cover 11 from the base 1, and only the guide rod 62 needs to be screwed in the opposite direction. Under the guidance of the adjusting screw 61, the guide rod 62 can drive the connecting plate 51 to move to the side away from the adjusting dial 32, so that the group of adjusting units 5 releases the pressing action on the adjusting dial 32 and the pressing block 42. Correspondingly, the pressing unit 4 will release the fixation of the wire, and the connecting module 2 will no longer wrap the end of the wire. The operator only needs to pull it lightly to remove the wire. When installing it later, it is only necessary to insert the wire into place and then adjust the control component 6.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection type electric knife switch, comprising a base, a protective cover is detachably mounted on the base, a power line terminal and a knife switch are also mounted on the base, and the power line terminal is provided with a plurality of arms, the number of the knife switch arms is the same as the number of the power line terminals, characterized in that: Also includes: A connection module, wherein the connection module comprises a plurality of wiring boards mounted on a base, and the number of the wiring boards is the same as the number of power line terminals, each of the wiring boards is connected to a corresponding arm of the switch, a mounting frame is provided at the wiring board, a pressing unit for fixing the wire by pressing is provided on one side of the mounting frame close to the incoming wire end, a mounting turntable is rotatably installed in the mounting frame, and two winding rods are symmetrically provided at the bottom of the mounting turntable; A driving unit, the driving unit comprising a guide sleeve mounted on a mounting frame, a connecting column being arranged in the guide sleeve, and the connecting column being mounted on the top of a mounting turntable, an adjusting turntable being slidably mounted on the connecting column in a vertical direction, and the adjusting turntable and the connecting column being connected via a sliding key, a first spring being further arranged between the adjusting turntable and the mounting frame, two guide columns being symmetrically arranged on a side wall of the adjusting turntable, and a spiral guide groove matching the guide column being arranged on an inner wall of the guide sleeve; The adjusting unit is installed on the inner side of the protective cover, and a group of adjusting units are arranged at the position corresponding to each of the terminal blocks. When the protective cover is installed on the base, the adjusting unit will push the guide sleeve to the side close to the mounting turntable, and simultaneously push the pressing unit to press the wires onto the terminal block.

2. The safety protection type power switch according to claim 1 is characterized in that: The pressing unit includes a sliding rod and a pressing block, the sliding rod is installed on the base, and the two sliding rods are symmetrically distributed on both sides of the terminal block, the two ends of the pressing block are respectively slidably installed on a sliding rod, and a second spring is also arranged between the pressing block and the base, and a pressing groove is opened on the bottom surface of the pressing block.

3. The safety protection type power switch according to claim 2 is characterized in that: The adjusting unit comprises a connecting plate installed on the inner side of the protective cover, and a pressing rod and a pressing sleeve are installed on the connecting plate.

4. The safety protection type power switch according to claim 3 is characterized in that: Each of the connecting plates is installed on the inner side of the protective cover through a set of control components, and the control components drive the connecting plates to move linearly along the axial direction of the connecting column.

5. The safety protection type power switch according to claim 4 is characterized in that: The control assembly includes an adjusting screw and a guide rod, the adjusting screw is installed on the inner side of the protective cover, and the connecting plate is slidably installed on the adjusting screw, the guide rod passes through the protective cover, and the protective cover is provided with a threaded hole matching the guide rod, and one end of the guide rod located on the inner side of the protective cover is rotatably installed on the connecting plate.

6. The safety protection type electric knife switch according to claim 1, characterized in that: The upper surface of each wiring board is also provided with a placement groove.

7. The safety protection type power switch according to claim 1, characterized in that: A plurality of line inlet bushings are arranged at one end of the protective cover close to the wiring board, respectively corresponding to each wiring board.

8. The safety protection type power switch according to claim 1, characterized in that: A first indicator line and a second indicator line are also provided at the edge of the side wall of the base, and the distance between the first indicator line and the second indicator line is used to indicate the stripping length of the wire terminal.

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