A safety switch

Abstract

The present invention belongs to the field of switch technology, and in particular to a safety switch, which includes a switch housing, a switch inner housing, a switch button, a disassembly and assembly adjustment rod, a first electric sheet, a second electric sheet, a third electric sheet, a fourth electric sheet, and a fifth electric sheet. In the present invention, when installing the live wire, the first limit block installed in the switch inner housing plays a limiting role on the inserted live wire; it prevents the installed live wire from slipping out and causing a hidden danger of electric shock. At the same time, this anti-slip method is also more convenient to use than using auxiliary tools. When removing the live wire from the live wire insertion port, the disassembly and assembly adjustment rod corresponding to the live wire insertion end is pressed inwardly. After the third electric sheet loses the pressing force on the live wire, the disassembly and assembly adjustment rod is continued to be pressed. Through the transmission of the disassembly and assembly adjustment rod, the pressure plate, the pressure block, the push block, the trigger push plate and the push inclined plate, the two first limit blocks are moved inward, and the limiting effect on the live wire is released, so that the live wire can be smoothly dialed out, which is also more convenient to use.

Description

Technical Field

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

[0002] In existing switches, the wires are often connected and connected by bolts, which requires manual tightening of the bolts one by one, making the operation inconvenient.

[0003] A bipolar switch refers to a switch with two neutral wires and two live wires, two neutral wires and two live wires. For this type of switch, quick-release components are often provided on the switch to facilitate installation and disassembly. This component clamps the wires through elastic conductive sheets, does not require a screw structure, and is relatively easy to operate. For example, Patent 2018212475486 discloses a quick-connect wiring device that can achieve the function of quick wiring.

[0004] However, this bipolar switch with a quick-connect wiring device still has the following problems in terms of safety:

[0005] 1. During the installation of two live wires or neutral wires, after one live wire access terminal has been installed, when installing another live wire or neutral wire, it is necessary to use auxiliary tools to keep the previously installed live wire or neutral wire inserted into the socket to prevent the installed live wire from slipping out and causing a risk of electric shock; this operation method that requires the use of auxiliary tools is more troublesome to operate.

[0006] 2. This type of bipolar switch is often used in high-current equipment. When it is closed, an arc will be generated. However, this type of switch is not equipped with a special arc extinguishing device. Although the applicable current is small, the arc generated is not dangerous. After long-term use, an oxide layer will form at the contact point, affecting the quality of electrical contact. At present, this type of bipolar switch does not have the function of not allowing circuit breaking under heavy load.

[0007] 3. If a short circuit occurs in the high-power electrical appliances used, the air switch with short-circuit protection function on the live wire alone cannot reliably protect the equipment, and the switch does not have a short-circuit protection function.

[0008] The above three problems need to be solved, but there is a ready-made double-pole quick-release switch for the present invention, and how to solve the above problems based on the existing switch is also a problem.

[0009] The present invention designs a safety switch to solve the above problems. Summary of the invention

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A safety switch comprises a switch housing, a switch inner housing, a switch button, a disassembly and assembly adjustment rod, a live wire insertion port, a neutral wire insertion port, a live wire connection port, a neutral wire connection port, a first electric sheet, a second electric sheet, a third electric sheet, a fourth electric sheet, a contact, a swing shaft, a pressure plate, and a fifth electric sheet. A first limit block is slidably mounted on the inner wall surface of each of the two live wire insertion ports, and a second spring is mounted between the two first limit blocks. The two first limit blocks are drivingly connected to the disassembly and assembly adjustment rod corresponding to the live wire insertion port. After the disassembly and assembly adjustment rod swings inward relative to the switch inner housing to squeeze the corresponding third electric sheet to make room for the live wire to be inserted, the disassembly and assembly adjustment rod continues to swing inward to drive the two first limit blocks to move inward.

[0012] A mounting column is fixedly installed on the switch button, and one end of the mounting column has a conical head; a limit ring and a first electromagnetic coil are fixedly installed on the switch inner shell, and the second electromagnetic coil is slidably installed on the switch inner shell and is located between the first electromagnetic coil and the limit ring; a fourth spring is installed between the second electromagnetic coil and the switch inner shell; three elastic mounting rods are fixedly installed evenly circumferentially on the second electromagnetic coil, and each mounting rod has a limit protrusion; after the limit protrusion is squeezed by the limit ring and swings to the middle, the limit protrusion limits the conical head; when the limit protrusion is not in contact with the limit ring, the limit protrusion and the conical head are staggered along the swinging direction of the mounting plate; the converter is installed on the switch inner shell and connected to the first electromagnetic coil; an electrode ring is respectively installed on the inner wall surface of the two live wire insertion ports, and copper wire is wound around the two electrode rings, and the two ends of the copper wire are combined and connected to the converter.

[0013] An unlocking mechanism for releasing the pressing effect of the quick-release adjusting rod on the live wire outlet is installed on the swing shaft of the disassembly and assembly adjusting rod corresponding to the live wire outlet; two three-stage telescopic rods are installed at the lower inner side of the live wire contact port, and a third spring is installed in the telescopic rod; a push plate is fixedly installed at one end of the two telescopic rods.

[0014] As a preferred solution, one end of the two first limit blocks extending out of the switch inner shell has a second inclined surface facing the outside of the live wire insertion port.

[0015] As a preferred solution, a push inclined plate is fixedly installed on each of the two first limit blocks, a guide sleeve is fixedly installed on the inner side of the live wire insertion port, the push block is slidably installed in the guide sleeve and two groups of trigger push plates are fixedly installed on one end of the push block, and the trigger push plates correspond one-to-one with the two push inclined plates; a pressure block is fixedly installed on the pressure plate on the disassembly and assembly adjusting rod corresponding to the live wire insertion port, and both the pressure block and the push block have a first inclined surface, and the first inclined surface on the pressure block corresponds to the first inclined surface on the push block.

[0016] As a preferred solution, two limit bars are fixedly installed in the guide sleeve, and two limit grooves are opened on the push block, and the two limit grooves and the two limit bars are matched one by one.

[0017] As a preferred solution, a fixing ring is fixedly mounted on the switch inner shell, one end of the fourth spring is fixedly mounted on the fixing ring, and the other end of the fourth spring is fixedly mounted on the second electromagnetic ring.

[0018] As a preferred solution, the conical head has a conical surface at one end away from the mounting column, and a flat end surface at the other end; the limiting protrusion has a conical surface at one end away from the mounting rod, and a flat end surface at the other end; the conical surface on the limiting protrusion cooperates with the limiting ring, and the flat end surface on the limiting protrusion cooperates with the flat end surface on the conical head.

[0019] As a preferred solution, the unlocking mechanism includes a heat conductive sheet, a leaf spring, a first spring, a second limit block, a clamping block, a mounting sleeve, and a heat conductive sleeve, wherein a swing groove is opened on the switch inner shell, and a clamping block is installed on the swing shaft of the disassembly and assembly adjustment rod corresponding to the live wire contact port, and the block has an inclined surface; a leaf spring is installed between the clamping block and the swing groove; the switch heat conductive sleeve is fixedly installed in the switch inner shell, and the heat conductive sleeve is connected to the fourth electric sheet corresponding to the live wire contact port through the heat conductive sheet; the mounting sleeve is a heat conductive material, and the mounting sleeve is fixedly installed in the heat conductive sleeve, one end of the second limit block has an inclined surface, the second limit block is slidably installed in the mounting sleeve, and a first spring is installed between the second limit block and the mounting sleeve, and the first spring is a memory metal material; the second limit block has a fourth inclined surface and a third inclined surface on both sides of one end, the fourth inclined surface on the second limit block cooperates with the inclined surface on the clamping block, and the third inclined surface of the second limit block cooperates with the sharp corner of the clamping block.

[0020] As a preferred solution, a groove is formed on the push plate.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] 1. When installing the live wire in the present invention, the first limit block installed in the inner shell of the switch plays a limiting role on the inserted live wire; it prevents the installed live wire from slipping out and causing a risk of electric shock. At the same time, this anti-slip method is more convenient to use than using auxiliary tools. When removing the live wire from the live wire insertion port, press the disassembly and assembly adjustment rod corresponding to the live wire insertion end. After the third electric sheet loses the pressing force on the live wire, continue to press the disassembly and assembly adjustment rod. Through the transmission of the disassembly and assembly adjustment rod, pressure plate, pressure block, push block, trigger push plate and push inclined plate, the two first limit blocks move inward, releasing the limiting effect on the live wire, so that the live wire can be smoothly dialed out, which is also more convenient to use.

[0023] 2. In the present invention, when the switch is installed on a high-power electrical appliance and is in a high-load state, the current in the circuit is relatively large, and the current is transmitted through the electrode ring, the copper wire and the converter, so that a large repulsive force is generated between the first electromagnetic coil and the second electromagnetic coil, and the second electromagnetic ring slides relative to the first electromagnetic ring. The limiting protrusion on the mounting rod is squeezed by the limiting ring and swings toward the middle to limit the conical head installed on the mounting column, so that the switch button cannot swing relative to the switch inner shell; in this state, the switch button cannot swing to disconnect the circuit; when in a small load state, the current in the circuit is small, and a large repulsive force cannot be generated between the first electromagnetic coil and the second electromagnetic coil, and the switch button can swing to disconnect the circuit.

[0024] 3. In the present invention, when a short circuit occurs, the temperature of the electric sheet will increase accordingly. After the temperature of the fourth electric sheet connected to the heat conductive sheet increases, the heat will be transferred to the first spring through the heat conductive sheet, the heat conductive sleeve and the installation sleeve. Because the first spring is a memory metal material, after the temperature of the first spring increases, the first spring will be deformed and shortened. The shortening of the first spring drives the second limit block to move back and lose the limit on the card block. At this time, under the action of the leaf spring, the corresponding swing shaft rotates, and the rotation of the swing shaft drives the corresponding disassembly and assembly adjustment rod to move inward, exerting pressure on the corresponding third electric sheet, so that the third electric sheet loses the squeezing effect on the connected live wire. At this time, under the action of the third spring in the telescopic rod, the telescopic rod drives the push block to move outward, and the push block drives the live wire to move outward, so that the live wire slides out of the live wire connection port smoothly. The input end and the output end of the switch are disconnected, thereby protecting the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall appearance of the components.

[0026] Figure 2 This is the second schematic diagram of the overall component appearance.

[0027] Figure 3 It is a schematic diagram of the internal structure distribution of the overall components.

[0028] Figure 4 This is a schematic diagram of the guide sleeve installation.

[0029] Figure 5 This is a schematic diagram of the electrode ring installation.

[0030] Figure 6 This is a schematic diagram of the telescopic rod installation.

[0031] Figure 7 This is a leaf spring installation diagram.

[0032] Figure 8 This is a schematic diagram of the distribution of disassembly and assembly adjustment rods.

[0033] Fig. 9 It is a schematic diagram of the cooperation between the pressing block and the pushing block.

[0034] Fig.10 This is a schematic diagram of the installation of the first limit block.

[0035] Fig.11 This is a schematic diagram of push plate installation.

[0036] Fig.12 It is a schematic diagram of the telescopic rod structure.

[0037] Fig.13 This is a schematic diagram of the installation of a single-sided electrode sheet.

[0038] Fig.14 This is a schematic diagram of the distribution of single-sided electrodes.

[0039] Fig.15 It is a schematic diagram of the cooperation between the second limit block and the clamping block.

[0040] Fig.16 This is the fourth spring installation diagram.

[0041] Fig.17 It is a schematic diagram of the cooperation between the conical head and the limiting protrusion.

[0042] Names of the numbers in the figure: 1. Switch housing; 2. Switch inner housing; 3. Switch button; 4. Disassembly and assembly adjustment rod; 5. Live wire insertion port; 6. Neutral wire insertion port; 7. Live wire connection port; 8. Neutral wire connection port; 9. First electric sheet; 10. Second electric sheet; 11. Third electric sheet; 12. Fourth electric sheet; 13. Contact; 14. First limit block; 15. Pressing block; 16. Electrode ring; 17. Copper wire; 18. Telescopic rod; 19. Push plate; 20. Unlocking mechanism; 21. Heat conducting sheet; 22. Leaf spring; 23. First spring; 24. Second limit block; 25. Swing shaft; 26. Pressing plate; 27. Pushing block ; 28. First inclined plane; 29. ​​Limiting strip; 30. Limiting groove; 31. Trigger push plate; 32. Push inclined plate; 33. Second inclined plane; 34. Second spring; 35. Guide sleeve; 36. Groove; 37. Third spring; 38. First electromagnetic coil; 39. Fifth electric sheet; 40. Block; 41. Mounting sleeve; 42. Heat-conducting sleeve; 43. Mounting column; 44. Conical head; 45. Fixing ring; 46. Fourth spring; 47. Converter; 48. Second electromagnetic coil; 49. Limiting ring; 50. Limiting protrusion; 51. Mounting rod; 52. Swinging groove; 53. Third inclined plane; 54. Fourth inclined plane. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples or drawings are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0044] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific length, orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0045] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] like Figure 1 , 2 , 3, it includes a switch housing 1, a switch inner housing 2, a switch button 3, a disassembly and assembly adjustment rod 4, a live wire insertion port 5, a neutral wire insertion port 6, a live wire connection port 7, a neutral wire connection port 8, a first electric sheet 9, a second electric sheet 10, a third electric sheet 11, a fourth electric sheet 12, a contact 13, a swing shaft 25, a pressure plate 26, and a fifth electric sheet 39, as shown in FIG. Figure 4 , 5 As shown, a first limit block 14 is slidably installed on the inner wall surface of the two live wire insertion ports 5, and a second spring 34 is installed between the two first limit blocks 14; the two first limit blocks 14 are transmission connected with the disassembly and assembly adjustment rod 4 corresponding to the live wire insertion port 5. After the disassembly and assembly adjustment rod 4 swings inward relative to the switch inner shell 2 to squeeze the corresponding third electric sheet 11 to make room for the live wire to be inserted, the disassembly and assembly adjustment rod 4 continues to swing inward to drive the two first limit blocks 14 to move inward.

[0047] In the present invention, the switch housing 1 is buckled on the switch inner housing 2, and the switch button 3 is swingably installed on the switch housing 1; the upper end of the back of the switch inner housing 2 is provided with two live wire insertion ports 5 and two neutral wire insertion ports 6, and the lower end is provided with two live wire connection ports 7 and two neutral wire connection ports 8; a first electric sheet 9 is installed near the live wire insertion port 5 and the neutral wire insertion port 6 in the switch inner housing 2, and a third electric sheet 11 is installed in each first electric sheet 9, and the third electric sheet 11 is elastic and the third electric sheet 11 is connected to the inner bottom of the corresponding first electric sheet 9 The first and second electric sheets 11 are connected to the switch inner shell 2 and the third electric sheet 11 is connected to the switch inner shell 2. ...2 are connected to the switch inner shell 2 and the third electric sheet 11 is connected to the switch inner shell 2. The first and second electric sheets 12 are connected to the switch inner shell 2 and the third electric sheet 11 is connected to the switch inner shell 2. A third electric sheet 11 is installed, the third electric sheet 11 is elastic and is in contact with the inner bottom surface of the corresponding fourth electric sheet 12; a pressing plate 26 is fixedly installed on the disassembly and adjustment rod 4 corresponding to the live wire connection port 7 or the neutral wire connection port 8, and the pressing plate 26 cooperates with the third electric sheet 11 installed on the inner side of the corresponding fourth electric sheet 12; the pressing plate 26 is in contact with and squeezed with the middle area of ​​the upper end of the corresponding third electric sheet 11; both sides of the third electric sheet 11 have areas for the live wire or neutral wire to be connected with it; the opening Two fifth electrical sheets 39 are installed in the switch inner shell 2, and one end of the fifth electrical sheet 39 has a contact 13; the two fifth electrical sheets 39 are connected to the two fourth electrical sheets 12 in a one-to-one correspondence; two second electrical sheets 10 are swingably installed in the switch inner shell 2, and one end of the second electrical sheet 10 has a contact 13, and the contacts 13 on the second electrical sheet 10 correspond to the contacts 13 on the fifth electrical sheet 39 in a one-to-one correspondence; the two second electrical sheets 10 are contacted and connected to the two first electrical sheets 9 in a one-to-one correspondence; the switch button 3 is in contact and extrusion fit with the two second electrical sheets 10.

[0048] In the present invention, the switch housing 1, the switch inner housing 2, the switch button 3, the disassembly and assembly adjustment rod 4, the live wire insertion port 5, the neutral wire insertion port 6, the live wire connection port 7, the neutral wire connection port 8, the first electric sheet 9, the second electric sheet 10, the third electric sheet 11, the fourth electric sheet 12, the contact 13, the swing shaft 25, the pressure plate 26, and the fifth electric sheet 39 are all structures in existing design products.

[0049] like Figure 3 , 16As shown in Figures 1 and 17, a mounting column 43 is fixedly mounted on the switch button 3, and one end of the mounting column 43 has a conical head 44; a limit ring 49 and a first electromagnetic coil 38 are fixedly mounted on the switch inner shell 2, and a second electromagnetic coil 48 is slidably mounted on the switch inner shell 2 and is located between the first electromagnetic coil 38 and the limit ring 49; a fourth spring 46 is installed between the second electromagnetic coil 48 and the switch inner shell 2; three elastic mounting rods 51 are evenly fixedly mounted on the second electromagnetic coil 48 in a circumferential direction, and each mounting rod 51 has a limit protrusion 50; after the limit protrusion 50 is squeezed by the limit ring 49 and swung to the middle, the limit protrusion 50 limits the conical head 44; when the limit protrusion 50 is not in contact with the limit ring 49, the limit protrusion 50 and the conical head 44 are staggered along the swinging direction of the mounting plate; the converter 47 is mounted on the switch inner shell 2 and connected to the first electromagnetic coil 38; as shown in Figures 1 and 17, a mounting column 43 is fixedly mounted on the switch button 3, and a conical head 44 is provided at one end of the mounting column 43; a conical head 44 is staggered along the swinging direction of the mounting plate when the limit protrusion 50 is fixedly mounted on the switch inner shell 2 and is located between the first electromagnetic coil 38 and the limit ring 49; a fourth spring 46 is installed between the second electromagnetic coil 48 and the switch inner shell 2; three elastic mounting rods 51 are evenly fixedly mounted on the second electromagnetic coil 48 in a circumferential direction, and each mounting rod 51 has a limit protrusion 50; after the limit protrusion 50 is squeezed by the limit ring 49 and swung Figure 5 , 8 As shown in FIG. 9 , an electrode ring 16 is installed on the inner wall surface of each of the two live wire insertion ports 5 , and a copper wire 17 is wound around each of the two electrode rings 16 . The two ends of the copper wire 17 are combined and connected to the converter 47 .

[0050] In the present invention, after the live wire is energized, an induced current is generated in the spirally wound copper wire 17. After the induced current is transmitted to the converter 47, it is converted into a current that can be used by the first electromagnetic coil 38 and the second electromagnetic coil 48. When the current is transmitted to the first electromagnetic coil 38, the first electromagnetic coil 38 generates an electromagnetic force, and the magnetic force generated by the first electromagnetic coil 38 generates a repulsive force on the second electromagnetic coil 48, so that the second electromagnetic coil 48 slides relative to the first electromagnetic coil 38. When the switch is installed on a low-power electrical appliance or a high-power electrical appliance but under a small load, the induced current is small, and the repulsive force of the second electromagnetic coil 48 on the first electromagnetic coil 38 is not enough to make the limiting protrusion 50 installed on the mounting rod 51 contact with the limiting ring 49. The limiting protrusion 50 is away from the conical head 44 under the elastic action of the mounting rod 51, and the flat end surface of the limiting protrusion 50 and the flat end surface of the conical head 44 are not aligned in the circumferential direction of the mounting column 43. Coincident, that is, the conical head 44 is not limited by the limiting protrusion 50; that is, the switch button 3 can also swing relative to the switch inner shell 2 to control the switch; when the switch is installed in a high-power electrical appliance and in a heavy load state, the electromagnetic force generated on the first electromagnetic coil 38 is relatively large and the electric force is sufficient to make the limiting protrusion 50 on the mounting rod 51 contact with the limiting ring 49, and the conical surface on the limiting protrusion 50 is squeezed by the limiting ring 49, and the limiting protrusion 50 on the mounting rod 51 swings toward the middle to limit the conical head 44 installed on the mounting column 43. At this time, the flat end surface of the limiting protrusion 50 and the flat end surface of the conical head 44 partially overlap in the axial direction of the mounting column 43, and the maximum overlap distance is L3, that is, at this time the switch button 3 cannot swing relative to the switch inner shell 2. If it swings, the flat end surface of the limiting protrusion 50 will inevitably contact between the conical head 44; in this state, the switch button 3 cannot disconnect the line.

[0051] When the limiting protrusion 50 is squeezed by the limiting ring 49 and swings toward the middle in the present invention, the corresponding electrical power is determined according to actual needs, which is related to the distance between the limiting protrusion 50 and the limiting ring 49 when the first electromagnetic ring and the second electromagnetic ring are in contact.

[0052] In the present invention, when the limiting protrusion 50 is squeezed by the limiting ring 49 and swings toward the middle to limit the conical head 44, the axial distance from the position where the limiting protrusion 50 contacts the limiting ring 49 to the cone tip of the limiting protrusion 50 is L1, and the distance from the position where the limiting protrusion 50 contacts the limiting ring 49 to the axis of the cone tip is L4. There is a gap of L2 between the flat end surface of the limiting protrusion 50 and the flat end surface of the conical head 44. It is set that L4 is greater than L3 and L1 is less than L2. The specific setting can ensure that when the repulsive force of the first electromagnetic ring and the second electromagnetic ring disappears, the limiting protrusion 50 gradually separates from the limiting ring 49, and the limiting protrusion 50 gradually moves away from the limiting ring 49 and swings outward, and does not contact the conical head 44 during the process. That is, when the second electromagnetic ring is reset, the limiting protrusion 50 can be smoothly reset under the elastic force of the mounting rod 51.

[0053] like Fig.11 , 12 As shown, an unlocking mechanism 20 for releasing the pressing effect of the quick-release adjusting rod on the live wire outlet is installed on the swing shaft 25 of the disassembly and assembly adjusting rod 4 corresponding to the live wire outlet 7; two three-stage telescopic rods 18 are installed at the lower inner side of the live wire contact port, and a third spring 37 is installed in the telescopic rod 18; a push plate 19 is fixedly installed at one end of the two telescopic rods 18.

[0054] like Figure 4 , 10 As shown, one end of the two first limit blocks 14 extending out of the switch inner housing 2 has a second inclined surface 33 facing the outside of the live wire insertion port 5 .

[0055] like Fig.10 As shown, a push inclined plate 32 is fixedly installed on each of the two first limit blocks 14, a guide sleeve 35 is fixedly installed on the inner side of the live wire insertion port 5, the push block 27 is slidably installed in the guide sleeve 35, and two sets of trigger push plates 31 are fixedly installed at one end of the push block 27, and the trigger push plates 31 are matched with the two push inclined plates 32 in a one-to-one correspondence; Fig. 9 , 13 As shown in 14, a pressure block 15 is fixedly mounted on the pressure plate 26 on the disassembly and assembly adjustment rod 4 corresponding to the live wire insertion port 5, and both the pressure block 15 and the push block 27 have a first inclined surface 28, and the first inclined surface 28 on the pressure block 15 and the first inclined surface 28 on the push block 27 correspond to each other.

[0056] like Figure 4 , 10As shown, two limiting strips 29 are fixedly installed in the guide sleeve 35, and two limiting grooves 30 are formed on the push block 27, and the two limiting grooves 30 are matched with the two limiting strips 29 in a one-to-one manner. The limiting strips 29 and the limiting grooves 30 play a limiting role on the push block 27 through the cooperation.

[0057] like Fig.16 , 17 As shown, a fixing ring 45 is fixedly mounted on the switch inner housing 2, one end of a fourth spring 46 is fixedly mounted on the fixing ring 45, and the other end of the fourth spring 46 is fixedly mounted on the second electromagnetic ring.

[0058] like Fig.16 , 17 As shown, the conical head 44 has a conical surface at one end away from the mounting column 43 and a flat end surface at the other end; the limiting protrusion 50 has a conical surface at one end away from the mounting rod 51 and a flat end surface at the other end; the conical surface on the limiting protrusion 50 cooperates with the limiting ring 49, and the flat end surface on the limiting protrusion 50 cooperates with the flat end surface on the conical head 44.

[0059] like Figure 6 , 7 As shown in Figures 1 and 15, the unlocking mechanism 20 includes a heat conductive sheet 21, a leaf spring 22, a first spring 23, a second limit block 24, a clamping block 40, a mounting sleeve 41, and a heat conductive sleeve 42, wherein a swinging groove 52 is provided on the switch inner housing 2, and a clamping block 40 is mounted on the swinging shaft 25 of the disassembly and assembly adjustment rod 4 corresponding to the live wire contact port, and the block has an inclined surface; a leaf spring 22 is mounted between the clamping block 40 and the swinging groove 52; the switch heat conductive sleeve 42 is fixedly mounted in the switch inner housing 2, and the heat conductive sleeve 42 is connected to the fourth electric sheet 12 corresponding to the live wire contact port 7 through the heat conductive sheet 21; the mounting sleeve 41 is provided with a heat conductive sheet 21, and the heat conductive sheet 21 is provided with a ... The sleeve 41 is made of heat-conducting material, the installation sleeve 41 is fixedly installed in the heat-conducting sleeve 42, one end of the second limit block 24 has a bevel, the second limit block 24 is slidably installed in the installation sleeve 41, and a first spring 23 is installed between the second limit block 24 and the installation sleeve 41, and the first spring 23 is a memory metal material; the two sides of one end of the second limit block 24 have a fourth bevel 54 and a third bevel 53, the fourth bevel 54 on the second limit block 24 cooperates with the bevel on the block 40, and the third bevel 53 of the second limit block 24 cooperates with the sharp corner of the block 40.

[0060] In normal use, i.e., in a non-short-circuit state, when the fourth inclined surface 54 on the second limit block 24 cooperates with the inclined surface on the clamping block 40, the clamping block 40 cannot pass over the second limit block 24 under the action of the leaf spring 22 under the action of the first spring 23; only in a short-circuit state can the clamping block 40 pass over the second limit block 24 under the action of the leaf spring 22. In the process of the clamping block 40 moving from the third inclined surface 53 side of the second limit block 24 to the fourth inclined surface 54 side, the third inclined surface 53 can ensure that the clamping block 40 passes over the second limit block 24 smoothly.

[0061] like Fig.12 As shown, a groove 36 is formed on the push plate 19. It is ensured that the firing line can be stuck in the groove 36 when the firing line pushes the push plate inward or the push plate pushes the firing line outward during installation, thereby improving the stability of the firing line movement.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

[0063] Implementation method: When the switch designed by the present invention is used to install the live wire at the access end, first, the disassembly adjustment rod 4 corresponding to the live wire insertion end is pressed inward, and the disassembly adjustment rod 4 squeezes the corresponding third electric sheet 11 through the pressure plate 26, so that the third electric sheet 11 is compressed and deformed, leaving an area for the live wire to be inserted; then, the external live wire is inserted into the live wire insertion port 5; during the insertion process, after the front end of the inserted live wire contacts the first limit block 14, it will squeeze the first limit block 14 through the second inclined surface 33 on the first limit block 14, The first limit block 14 moves inward, that is, moves partly from the live wire insertion port to the inner wall of the port and enters the inner wall of the shell; after the area of ​​the inserted live wire where the insulation skin is not stripped contacts the first limit block 14, the sharp corner of one end of the first limit block 14 having the second inclined surface 33 will be tightly pressed against the insulation skin under the action of the second spring 34, thereby limiting the outward slip of the live wire; preventing the installed live wire from slipping out and causing a risk of electric shock. At the same time, this anti-slip method is more convenient to use than using auxiliary tools.

[0064] When removing the live wire from the live wire insertion port 5, first press the disassembly and assembly adjusting rod 4 corresponding to the live wire insertion end inward, and the disassembly and assembly adjusting rod 4 squeezes the corresponding third electric sheet 11 through the pressure plate 26, so that the third electric sheet 11 is compressed and deformed, and the third electric sheet 11 loses the clamping force on the live wire, and then continue to press the disassembly and assembly adjusting rod 4, and the disassembly and assembly adjusting rod 4 drives the pressure plate 26 to move inward; during the inward movement of the pressure plate 26, when the pressure block 15 installed thereon contacts with the corresponding pushing block 27, under the action of the first inclined surface 28, the pressure block 15 will squeeze the pushing block 27, so that the pushing block 27 slides toward the side of the first limit block 14; the sliding of the pushing block 27 drives the trigger push plate 31 thereon to slide, and the trigger push plate 31 slides and squeezes the corresponding pushing inclined plate 32; so that the pushing inclined plate 32 drives the two first limit blocks 14 to move inward, releases the limiting effect on the live wire, and allows the live wire to be smoothly dialed out.

[0065] In the present invention, when the switch is installed on a high-power electrical appliance and is under a large load, a large repulsive force is generated between the first electromagnetic coil 38 and the second electromagnetic coil 48 through the transmission of the electrode ring 16, the copper wire 17 and the converter 47, and the second electromagnetic ring slides relative to the first electromagnetic ring. The limiting protrusion 50 on the mounting rod 51 is squeezed by the limiting ring 49 and swings toward the middle to limit the conical head 44 installed on the mounting column 43, so that the switch button 3 cannot swing relative to the switch inner shell 2; in this state, the switch button 3 cannot swing to disconnect the circuit; when it is in a small load state, the current in the circuit is small, and a large repulsive force cannot be generated between the first electromagnetic coil 38 and the second electromagnetic coil 48, and the switch button 3 can swing to disconnect the circuit.

[0066] The working process of installing the live wire at the live wire outlet is described as follows. Assume that the initial state is that the disassembly and assembly adjustment rod 4 here does not apply pressure to the third electric sheet 11, the fourth inclined surface 54 on the second limiting protrusion 50 cooperates with the inclined surface on the block 40, the leaf spring 22 is compressed, and the elastic force of the leaf spring 22 cannot make the block 40 pass over the second limiting protrusion 50; at this time, the disassembly and assembly adjustment rod 4 is manually moved to apply pressure to the third electric sheet 11, and the pushing force during the movement makes the block 40 pass over the second limiting block 24, and then under the action of the leaf spring 22, the pressure plate 26 on the disassembly and assembly adjustment rod 4 applies pressure to the third electric sheet 11, and when the hand removes the pushing force, the pressure plate 26 always applies pressure to the third electric sheet 11. At this time, the live wire can be smoothly inserted. After the live wire is inserted, the disassembly and assembly adjustment plate is manually moved to move the pressure plate 26 away from the third electric sheet 11. During the process, the leaf spring 22 is compressed, and the tip of the block 40 gradually approaches the third inclined surface 53 of the second limiting protrusion 50. Before the disassembly adjustment rod 4 is moved into place, the tip of the block 40 cooperates with the third inclined surface 53 and passes over the tip of the second limiting protrusion 50. After the inclined surface of the block 40 cooperates with the fourth inclined surface 54 of the second limiting protrusion 50, the leaf spring 22 reaches the maximum compression amount, and the disassembly adjustment rod 4 is moved into place, and then the manual force is removed. At this time, the live wire is pressed by the third electric sheet 11. When the live wire needs to be removed in normal use, the disassembly adjustment rod 4 is manually pushed down, so that the pressure plate 26 presses the third electric sheet 11 under the action of the leaf spring 22, and the live wire can be removed.

[0067] When a short circuit occurs, the temperature of the electric sheet will increase accordingly. When the temperature of the fourth electric sheet 12 connected to the heat conductive sheet 21 increases, the heat will be transferred to the heat conductive sleeve 42 through the heat conductive sheet 21. The heat conductive sleeve 42 transfers the heat to the installation sleeve 41, and the installation sleeve 41 transfers the heat to the first spring 23. Because the first spring 23 is a memory metal material, after the temperature of the first spring 23 increases, the first spring 23 will be deformed and shortened. The shortening of the first spring 23 drives the second limit block 24 to move back and lose the limit on the block 40. At this time, under the action of the leaf spring 22, the corresponding swing shaft 25 rotates, and the rotation of the swing shaft 25 drives the corresponding disassembly and assembly adjustment rod 4 to move inward, exerting pressure on the corresponding third electric sheet 11, so that the third electric sheet 11 loses the squeezing effect on the connected live wire. At this time, under the action of the third spring 37 in the telescopic rod 18, the telescopic rod 18 drives the push block to move outward, and the push block drives the live wire to move outward, so that the live wire slides out of the live wire connection port 7 smoothly, so that the access end and the access end of the switch are disconnected, protecting the equipment.

Claims

1. A safety switch, comprising a switch housing, a switch inner housing, a switch button, a disassembly and assembly adjustment rod, a live wire insertion port, a neutral wire insertion port, a live wire connection port, a neutral wire connection port, a first electric sheet, a second electric sheet, a third electric sheet, a fourth electric sheet, a contact, a swing shaft, a pressure plate, and a fifth electric sheet, characterized in that: A first limit block is slidably mounted on the inner wall surface of the two live wire insertion ports, and a second spring is mounted between the two first limit blocks; the two first limit blocks are drivingly connected with the disassembly and assembly adjustment rods corresponding to the live wire insertion ports, and after the disassembly and assembly adjustment rods swing inward relative to the inner shell of the switch to squeeze the corresponding third electric sheet to make room for the live wire to be inserted, the disassembly and assembly adjustment rods continue to swing inward to drive the two first limit blocks to move inward; A mounting column is fixedly installed on the switch button, and one end of the mounting column has a conical head; a limit ring and a first electromagnetic coil are fixedly installed on the switch inner shell, and the second electromagnetic coil is slidably installed on the switch inner shell and is located between the first electromagnetic coil and the limit ring; a fourth spring is installed between the second electromagnetic coil and the switch inner shell; three elastic mounting rods are evenly fixedly installed on the second electromagnetic coil in a circumferential direction, and each mounting rod has a limit protrusion; after the limit protrusion is squeezed by the limit ring and swung to the middle, the limit protrusion limits the conical head; when the limit protrusion does not contact the limit ring, the limit protrusion and the conical head are staggered along the swinging direction of the mounting plate; the converter is installed on the switch inner shell and connected to the first electromagnetic coil; an electrode ring is respectively installed on the inner wall surface of the two live wire insertion ports, and copper wire is wound around the two electrode rings, and the two ends of the copper wire are combined and connected to the converter; An unlocking mechanism for releasing the pressing effect of the quick-release adjusting rod on the live wire outlet is installed on the swing shaft of the disassembly adjusting rod corresponding to the live wire outlet; two three-stage telescopic rods are installed at the lower inner side of the live wire contact port, and a third spring is installed in the telescopic rod; a push plate is fixedly installed at one end of the two telescopic rods; The switch shell is snapped onto the switch inner shell, and the switch button is swingably installed on the switch shell; two live wire insertion ports and two neutral wire insertion ports are opened on the upper end of the back side of the switch inner shell, and two live wire connection ports and two neutral wire connection ports are opened on the lower end; a first electric sheet is installed in the switch inner shell near the live wire insertion port and the neutral wire insertion port, and a third electric sheet is installed in each first electric sheet, the third electric sheet is elastic and the third electric sheet is in contact and connected with the inner bottom surface of the corresponding first electric sheet; a pressing plate is fixedly installed on the disassembly and assembly adjustment rod corresponding to the live wire insertion port or the neutral wire insertion port, and the pressing plate cooperates with the third electric sheet installed on the inner side of the corresponding first electric sheet; the pressing plate contacts and squeezes with the middle area of ​​the upper end of the corresponding third electric sheet; both sides of the third electric sheet have areas for the connected live wire or neutral wire to contact and connect with it; a fourth electric sheet is installed in the switch inner shell near the live wire connection port and the neutral wire connection port, and each third electric sheet A third electric sheet is installed in each of the four electric sheets. The third electric sheet is elastic and is in contact with the inner bottom surface of the corresponding fourth electric sheet. A pressure plate is fixedly installed on the disassembly and assembly adjustment rod corresponding to the live wire connection port or the neutral wire connection port, and the pressure plate cooperates with the third electric sheet installed on the inner side of the corresponding fourth electric sheet. The pressure plate contacts and squeezes with the middle area of ​​the upper end of the corresponding third electric sheet. Both sides of the third electric sheet have areas for the live wire or the neutral wire to contact and connect with it. Two fifth electric sheets are installed in the inner shell of the switch, and one end of the fifth electric sheet has a contact. The two fifth electric sheets are connected to the two fourth electric sheets in a one-to-one correspondence. Two second electric sheets are swingably installed in the inner shell of the switch, and one end of the second electric sheet has a contact, and the contact on the second electric sheet corresponds to the contact on the fifth electric sheet in a one-to-one correspondence. The two second electric sheets are in contact with and connected to the two first electric sheets in a one-to-one correspondence. The switch button contacts and squeezes with the two second electric sheets. When the live wire is energized, an induced current will be generated in the spirally wound copper wire. After the induced current is transmitted to the converter, it is converted into a current that can be used by the first electromagnetic coil and the second electromagnetic coil. When the current is transmitted to the first electromagnetic coil, the first electromagnetic coil generates an electromagnetic force. The magnetic force generated by the first electromagnetic coil generates a repulsive force on the second electromagnetic coil, causing the second electromagnetic coil to slide relative to the first electromagnetic coil. When the limiting protrusion is squeezed by the limiting ring and swings toward the middle to limit the conical head, the axial distance from the position where the limiting protrusion contacts the limiting ring to the conical tip of the limiting protrusion is L1, the distance from the position where the limiting protrusion contacts the limiting ring to the axis of the conical tip is L4, and there is a gap of L2 between the flat end surface of the limiting protrusion and the flat end surface of the conical head; The electromagnetic force generated by the first electromagnetic coil is sufficient to make the limiting protrusion on the mounting rod contact with the limiting ring. The limiting protrusion on the mounting rod swings toward the middle to limit the conical head installed on the mounting column. At this time, the flat end surface of the limiting protrusion and the flat end surface of the conical head partially overlap in the axial direction of the mounting column, and the maximum overlapping distance is L3. It is set that L4 is greater than L3 and L1 is less than L2.

2. A safety switch according to claim 1, characterized in that: One end of the two first limit blocks extending out of the switch inner shell has a second inclined surface facing the outside of the live wire insertion port.

3. A safety switch according to claim 1 or 2, characterized in that: A pushing inclined plate is fixedly installed on each of the two first limit blocks, a guide sleeve is fixedly installed on the inner side of the live wire insertion port, the pushing block is slidably installed in the guide sleeve and two groups of trigger push plates are fixedly installed on one end of the pushing block, the trigger push plates correspond one to one with the two pushing inclined plates; a pressing block is fixedly installed on the pressure plate on the disassembly and assembly adjusting rod corresponding to the live wire insertion port, the pressing block and the pushing block both have a first inclined surface, and the first inclined surface on the pressing block corresponds to the first inclined surface on the pushing block.

4. A safety switch according to claim 3, characterized in that: Two limiting strips are fixedly installed in the guide sleeve, and two limiting grooves are formed on the push block, and the two limiting grooves are matched with the two limiting strips in a one-to-one correspondence.

5. A safety switch according to claim 1, characterized in that: A fixing ring is fixedly mounted on the switch inner shell, one end of the fourth spring is fixedly mounted on the fixing ring, and the other end of the fourth spring is fixedly mounted on the second electromagnetic ring.

6. A safety switch according to claim 1, characterized in that: The conical head has a conical surface at one end away from the mounting column and a flat end surface at the other end; the limiting protrusion has a conical surface at one end away from the mounting rod and a flat end surface at the other end; the conical surface on the limiting protrusion cooperates with the limiting ring, and the flat end surface on the limiting protrusion cooperates with the flat end surface on the conical head.

7. A safety switch according to claim 1, characterized in that: The unlocking mechanism includes a heat conductive sheet, a leaf spring, a first spring, a second limit block, a clamping block, a mounting sleeve, and a heat conductive sleeve, wherein a swing groove is provided on the switch inner shell, a clamping block is installed on the swing shaft of the disassembly and assembly adjustment rod corresponding to the live wire contact port, and the block has an inclined surface; a leaf spring is installed between the clamping block and the swing groove; the switch heat conductive sleeve is fixedly installed in the switch inner shell, and the heat conductive sleeve is connected to the fourth electric sheet corresponding to the live wire contact port through the heat conductive sheet; the mounting sleeve is a heat conductive material, and the mounting sleeve is fixedly installed in the heat conductive sleeve, one end of the second limit block has an inclined surface, the second limit block is slidably installed in the mounting sleeve, and a first spring is installed between the second limit block and the mounting sleeve, and the first spring is a memory metal material; both sides of one end of the second limit block have a fourth inclined surface and a third inclined surface, the fourth inclined surface on the second limit block cooperates with the inclined surface on the clamping block, and the third inclined surface of the second limit block cooperates with the sharp corner of the clamping block.

8. A safety switch according to claim 1, characterized in that: The push plate is provided with a groove.

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