CN110047714B

CN110047714B - Safety controller applied to circuit overload protection

Info

Publication number: CN110047714B
Application number: CN201910416110.9A
Authority: CN
Inventors: 梅厚凤
Original assignee: Wenling Shenlong Electromechanical Co ltd
Current assignee: WENLING SHENLONG ELECTROMECHANICAL Co.,Ltd.
Priority date: 2019-05-19
Filing date: 2019-05-19
Publication date: 2020-12-04
Anticipated expiration: 2039-05-19
Also published as: CN110047714A

Abstract

The invention provides a safety controller applied to circuit overload protection, which comprises an installation cover shell, a circuit protection device and a knob reset device, wherein the circuit protection device comprises a traction column, an installation support and a protection mechanism, the protection mechanism is used for fusing a melt in the protection mechanism when a circuit is abnormal and achieving the purpose of protecting the circuit, the protection mechanism is provided with a plurality of groups of working protection mechanisms, after the melt is fused, the protection mechanisms are matched with the traction column and enable the next group of protection mechanisms to automatically replace the fused protection mechanisms, the knob reset device comprises a knob switch, a closing mechanism and a wiring mechanism, the wiring mechanism is used for being connected with the circuit in series, the knob switch is used for being manually opened and closed by a user, and the closing mechanism is used for receiving an opening and closing signal of the knob switch and finally matched with the wiring mechanism to control the opening and closing of corresponding electrical equipment.

Description

Safety controller applied to circuit overload protection

Technical Field

The invention relates to the field of circuits, in particular to a safety controller applied to circuit overload protection.

Background

The protection switch is a safety device connected in the circuit, mainly in order to break the circuit when the circuit has abnormal faults such as overload, short circuit, etc., avoid the circuit or corresponding electrical equipment from damaging, the protection switch commonly used at present is generally based on that the bimetallic strip is heated and deformed and finally makes the moving and static contacts separate, and achieve the purpose of breaking the circuit, but the elastic recovery of the bimetallic strip is limited, after exceeding the elastic recovery limit, the bimetallic strip will probably bounce fatigue, or the contact fusion, adhesion caused by abnormal current will cause the protection switch to fail to work normally, therefore the inventor designs a protection switch adopting the melt fusing protection circuit mode, when the circuit has no abnormal fault, the user can manually open/close the protection switch, when the circuit has abnormal fault, the melt in the circuit can be automatically replaced, And automatically, the protection switch is closed, so that the circuit and the corresponding electrical equipment are effectively prevented from being damaged, and the safety performance is better.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a protection switch, which is used for automatically replacing a melt in a circuit protection device and automatically closing a knob switch when a circuit has an abnormal fault condition, so that the circuit is effectively prevented from being damaged, and the safety performance is better.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

The safety controller applied to circuit overload protection comprises an installation cover shell, a circuit protection device and a knob reset device, wherein the knob reset device is connected with a circuit in series and can be used for controlling the circuit to be closed/opened;

the mounting cover is a cylindrical shell structure with an opening at one end and a closed end, the opening end of the mounting cover is matched with the mounting cover, a partition plate with a large surface parallel to the end cover is fixed in the mounting cover, the area between the partition plate and the closed end of the mounting cover is a first chamber, and the area between the partition plate and the open end of the mounting cover is a second chamber;

the circuit protection device is arranged in a first cavity of the mounting housing and comprises a traction column, a mounting bracket and a protection mechanism, the protection mechanism is used for fusing the melt in the protection mechanism when the circuit is abnormal and achieving the purpose of protecting the circuit, and the protection mechanism is provided with a plurality of groups of working protection mechanisms which are matched with the traction column and enable the next group of protection mechanisms to automatically replace the protection mechanisms after the melt is fused;

the traction column is coaxially fixed in the first cavity of the mounting housing, the outer circular surface of the traction column is coaxially fixed with a traction block in a cylindrical structure, the outer circular surface of the traction block is provided with a traction groove penetrating through the axial thickness of the traction block, the traction groove can be divided into three sections, the three sections are respectively a first vertical section communicated with the end surface of the traction block facing the closed end of the mounting housing, a second vertical section communicated with the end surface of the traction block facing the partition plate, and a traction section positioned between the first vertical section and the second vertical section, the guide directions of the first vertical section and the second vertical section are all parallel to the axial direction of the traction column, and the traction sections are obliquely arranged;

a limiting bulge is arranged at the connection position of the second vertical section of the traction groove and the traction block, and the limiting bulge is positioned on one side of the second vertical section, which faces the first vertical section;

the outer circular surface of the traction column is also coaxially fixed with a conductive disc which is close to the partition plate;

the mounting bracket is made of insulating materials and comprises an upper bracket body and a lower bracket body, wherein the upper bracket body/the lower bracket body are movably mounted outside the traction column through bearings, the upper bracket body is positioned between the traction block and the closed end of the mounting cover shell, and the lower bracket body is positioned between the traction block and the conductive disc;

the protection mechanism is arranged between the upper frame body and the lower frame body and comprises a conductive column, the extending direction of the conductive column is parallel to the axial direction of the traction column, one end of the conductive column is fixed on the upper frame body, the other end of the conductive column is a conductive end, and the conductive end penetrates through the lower frame body and is in conductive contact with the conductive disc;

the protection mechanism further comprises a first conductive block and a second conductive block, a sliding part is arranged between the second conductive block and the conductive column, the second conductive block is movably arranged outside the conductive column through the sliding part and forms sliding guide fit, a sliding hole is formed in the second conductive block, the sliding part comprises a sliding groove arranged on the outer circular surface of the conductive column and a sliding protrusion arranged in the sliding hole, the guiding direction of the sliding groove is parallel to the extending direction of the conductive column, sliding guide fit is formed between the sliding groove and the sliding protrusion, the conductive column is in conductive contact with the second conductive block, a traction protrusion is further arranged on the side face, facing the traction column, of the second conductive block, the first conductive block is fixedly arranged on the lower frame body, and a conductive contact is arranged on the side face, away from the upper;

the protection mechanism further comprises a melt, a clamping piece is arranged between one end of the melt and the first conducting block and clamped and installed on the first conducting block through the first clamping piece, a clamping piece II is arranged between the other end of the melt and the second conducting block and clamped and installed on the second conducting block through the second clamping piece, and the first clamping piece and the second clamping piece are made of insulating materials;

a clamping groove is formed in the side face, facing the upper frame body, of the first conducting block, and a bolt hole is formed in the side face, parallel to the depth direction of the clamping groove, of the first conducting block;

the first clamping piece is arranged in the clamping groove and comprises a clamping block, a mounting bolt and a clamping spring, the clamping block is arranged in the clamping groove, the mounting bolt can penetrate through the bolt hole and is in contact with the clamping block, the mounting bolt is screwed down to displace and can pull the clamping block to synchronously displace, one end of the clamping spring is abutted against the clamping block, the other end of the clamping spring is abutted against the groove wall of the clamping groove, the elastic force of the clamping spring enables the clamping block to move close to the bolt hole, and the area between the clamping block and the groove wall of the clamping groove, which is opposite to the mounting bolt, is a clamping area;

the side surface/groove wall of the clamping block/clamping groove, which is in contact with the melt, is of a cambered surface structure matched with the melt;

the connection relation between the second clamping piece and the second conductive block is consistent with that between the first clamping piece and the first conductive block;

the protection mechanism further comprises a driving spring in a compressed state, the driving spring is sleeved outside the conductive column and made of an insulating material, one end of the driving spring is abutted against the second conductive block, the other end of the driving spring is abutted against the lower frame body, and the elastic force of the driving spring drives the second conductive block to move away from the lower frame body along the extension direction of the conductive column;

the plurality of groups of protection mechanisms are arranged between the upper frame body and the lower frame body in an array mode along the circumferential direction of the traction column, traction protrusions on the conductive blocks II of one group of protection mechanisms are located right below the vertical section II of the traction groove, and the distance between every two adjacent groups of protection mechanisms is equal to the distance between the vertical section I and the vertical section II of the traction groove;

the conductive end of the conductive column is provided with a rolling part for reducing friction between the conductive end of the conductive column and the conductive disc;

the end face of the conductive end of the conductive column is provided with an accommodating groove, the side face of the conductive disc, facing the conductive column, is provided with an annular groove which is coaxial with the traction column, the rolling piece is arranged in the accommodating groove and comprises a middle block, a conductive ball and a first abutting spring, one end of the first abutting spring is fixed at the bottom of the accommodating groove, the other end of the first abutting spring is fixedly connected with the middle block, the side face of the middle block, deviating from the bottom of the accommodating groove, is a concave spherical surface matched with the conductive ball, the conductive ball is arranged in the annular groove, and part of the conductive ball is;

the knob resetting device comprises a knob switch, a closing mechanism and a wiring mechanism, wherein the wiring mechanism is used for being connected with a circuit in series, the knob switch is used for being manually opened and closed by a user, and the closing mechanism is used for receiving an opening and closing signal of the knob switch and finally matched with the wiring mechanism to control the opening and closing of corresponding electric equipment.

As a further improvement of the present solution.

The traction column is coaxially provided with a first avoidance hole penetrating through the axial thickness of the traction column, the partition plate is provided with a second avoidance hole coaxially arranged with the first avoidance hole, and the closed end of the mounting housing is provided with a through hole coaxially arranged with the second avoidance hole;

the rotary switch is made of insulating materials and comprises a rotating shaft, one end of the rotating shaft is positioned in a second cavity of the mounting cover shell, the other end of the rotating shaft penetrates through the second avoidance hole or is positioned in the through hole together, a rotary knob disk is installed at the end in a matching mode, the rotating shaft can rotate around the axial direction of the rotating shaft, and a rotary knob handle is installed on the rotary knob disk in a matching mode;

the linkage part is arranged between the knob disc and the upper frame body and comprises a linkage block, a linkage spring, a linkage groove I and a linkage groove II, wherein the linkage groove I is arranged on the end face, facing the upper frame body, of the knob disc, the linkage groove II is arranged on the side face, facing the knob disc, of the upper frame body, one end of the linkage block is positioned in the linkage groove I, the other end of the linkage block is positioned in the linkage groove II, the part, located in the linkage groove I, of the linkage block is of a semispherical structure, one end of the linkage spring is fixed at the bottom of the linkage groove II, the other end of the linkage spring is fixedly connected with the linkage block, and the elastic force of the;

the linkage pieces are arranged in a plurality of groups in an array along the circumferential direction of the knob disc, and the number of the groups is equal to that of the protection mechanisms.

As a further improvement of the present solution.

The closing mechanism is arranged at the end part of the rotating shaft, which is positioned in the second mounting housing cavity, and comprises fixing blocks, fixing rods and closing parts, wherein the fixing blocks/the fixing rods are all made of conductive materials, the fixing blocks are of round block structures and are coaxially fixed outside the rotating shaft, one ends of the fixing rods are fixed outside the fixing blocks, guide holes are formed in the other ends of the fixing rods, and two groups of fixing rods are arranged in an array manner along the circumferential direction of the fixing blocks;

the closing member comprises a sliding rod, a contact block and a buffer spring, wherein the sliding rod/the contact block is made of a conductive material, the buffer spring is made of an insulating material, the sliding rod is arranged in the guide hole and forms sliding guide fit, the contact block is fixed at one end of the sliding rod, the buffer spring is sleeved outside the part, located between the contact block and the fixed rod, of the sliding rod, the contact block is driven by the elasticity of the buffer spring to move away from the fixed rod, and the closing member is correspondingly provided with two groups which are a first closing member and a second closing member;

the wiring mechanism comprises a first wiring member, a second wiring member and a conductive transition member, wherein the first wiring member is arranged between the circuit and the first closing member, the second wiring member is arranged between the conductive disc and the circuit, and the conductive transition member is arranged between the second closing member and the protection mechanism.

As a further improvement of the present solution.

The wiring component I comprises a first conducting rod and a second conducting rod, one end of the first conducting rod is positioned in a cavity II of the mounting housing, the other end of the first conducting rod extends out of the mounting housing and is fixed with a first wiring lug connected with a circuit in series, the second conducting rod is fixed in the cavity II of the mounting housing and is in conductive contact with a contact block of the first closing part, the second conducting rod is positioned right behind the first closing part which rotates along the replacement of the circuit protection device, and a first conducting plate for conductive connection between the first conducting rod and the second conducting rod is arranged between the first conducting rod and the second conducting rod;

the second wiring component comprises a fourth conducting rod, the fourth conducting rod is fixed in a second cavity of the installation housing, one end of the fourth conducting rod extends out of the first cavity of the installation housing, a conducting ring is fixed at the end of the fourth conducting rod, the conducting ring is coaxially fixed outside the traction column and located right below the conducting disc, the conducting ring and the conducting disc are in conducting contact, and the other end of the fourth conducting rod extends out of the installation housing and the end of the fourth conducting rod is fixed with a second wiring piece which is used for being connected with a circuit in series.

As a further improvement of the present solution.

The conductive transition member is arranged on the end face, facing the upper frame body, of the partition plate and comprises an installation block, a first conductive piece, a second conductive piece and a constraint piece, the installation block is of an arc-shaped block structure, the installation block is fixed on the end face, facing the upper frame body, of the partition plate, and the installation block and the traction column are coaxially arranged;

the end face of the mounting block, facing the upper frame body, is provided with a guide plate, the guide plate is of an arc plate structure which is coaxially arranged with the traction column, the guide plate is provided with two groups of guide plates along the radial direction of the traction column, the area between the two groups of guide plates is a guide area, the end face of the mounting block, facing the upper frame body, is also provided with a mounting hole penetrating through the axial thickness of the mounting block, the end face of the separation plate, facing the upper frame body, is provided with a mounting groove and a penetrating hole, and the mounting hole is communicated with the guide area, the mounting groove is communicated;

the conductive piece I comprises a conductive rod III and a conductive plate II, the conductive plate II is fixed in the mounting groove, one end of the conductive plate II is positioned right below the mounting hole, the other end of the conductive plate II is positioned right above the through hole, the conductive rod III is fixed in the cavity II of the mounting housing, one end of the conductive rod III penetrates through the through hole and is fixedly connected with the conductive plate II, the conductive rod III is also positioned right behind the replacement rotation direction of the closing piece II along the circuit protection device, and the conductive rod III is in conductive contact with the contact block of the closing piece II;

the conductive piece II comprises a conductive sleeve made of a conductive material, a guide rod, a transition block and a second abutting spring made of an insulating material, the conductive sleeve is fixed on the conductive plate II, and the guide rod is movably arranged in the conductive sleeve and forms sliding guide fit;

the transition block is fixed on the guide rod, part of the transition block is positioned in the guide area of the mounting block, the side surface of the transition block facing the closed end of the mounting cover casing consists of two parts, and the two parts sequentially comprise a guide inclined plane and a horizontal plane along the replacement rotation direction of the circuit protection device, the distance between the guide inclined plane and the partition plate increases progressively along the replacement rotation direction of the circuit protection device, and the conductive contact of the working protection mechanism is in conductive contact with the horizontal plane of the transition block;

the inner step is arranged in the mounting hole arranged on the mounting block, one end of the second abutting spring abuts against the transition block, the other end of the second abutting spring abuts against the inner step, and the elastic force of the second abutting spring drives the transition block to move away from the conductive sleeve;

the end surface of the mounting block facing the upper frame body is also provided with a restriction hole penetrating through the axial thickness of the mounting block, and the restriction hole is positioned right behind the replacement rotation direction of the circuit protection device along the mounting hole;

the restraint piece is arranged in the restraint hole and comprises a restraint block and a restraint spring, the restraint block is arranged in the restraint hole, one end of the restraint spring is fixed on the partition plate, the other end of the restraint spring is fixedly connected with the restraint block, and the elastic force of the restraint spring drives the restraint block to move away from the partition plate;

the side surface of the restraint block, which is far away from the partition plate, is provided with restraint plates, the restraint plates are of arc plate structures and are coaxially arranged with the traction column, the side surface of the restraint plates, which is far away from the partition plate, is a restraint inclined surface, the distance between the restraint inclined surface and the partition plate is increased progressively along the replacement rotation direction of the circuit protection device, the restraint plates are provided with two groups along the radial direction of the traction column, and the area between the two groups of restraint plates is an avoidance area;

and the distance between the constraint component and the second conductive component is equal to the distance between two adjacent groups of protection mechanisms.

Compared with the prior art, the invention has the advantages that when the circuit has no abnormal fault, a user can turn on/off the knob switch by manually rotating/reversely rotating the knob resetting device, the circuit protection device is still in the process, when the circuit has the abnormal fault condition, the circuit protection device can automatically replace the melt in the circuit protection device and automatically turn off the knob switch, the circuit is effectively prevented from being damaged, the safety performance is better, meanwhile, the arrangement of the rolling piece in the protection mechanism enables the friction mode between the conductive post and the conductive disc to be converted from sliding friction to rolling friction, the occurrence of poor contact between the conductive post and the conductive disc due to friction is avoided, besides, the protection switch can also be applied to the opening and closing of electrical equipment, compared with the common switch of the existing electrical equipment, the protection switch not only can be normally switched on and off and control the switching on and off of electrical equipment, but also can carry out overload protection on the electrical equipment and corresponding electric lines.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic view of the internal structure of the present invention.

Fig. 4 is a schematic view of the internal structure of the present invention.

Fig. 5 is a schematic view of the internal structure of the present invention.

Fig. 6 is a schematic structural diagram of the circuit protection device of the present invention.

Fig. 7 is a mating view of the traction column and mounting bracket of the present invention.

Fig. 8 is a schematic structural view of the traction column of the present invention.

Fig. 9 is a schematic structural view of the protection mechanism of the present invention.

Fig. 10 is a matching view between the first/second conductive blocks and the melt according to the present invention.

Fig. 11 is a matching view between the first conductive block and the first clamping member of the present invention.

Fig. 12 is a cross-sectional mating view of the rolling element and traction column of the present invention.

Fig. 13 is a schematic structural view of the knob resetting device of the invention.

Fig. 14 is a schematic structural view of the knob resetting device of the invention.

FIG. 15 is a view of the knob switch and closing mechanism of the present invention in combination.

Fig. 16 is a matching view of the rotary switch and the upper frame body according to the present invention.

Fig. 17 is a schematic structural diagram of a linkage member according to the present invention.

Fig. 18 is a schematic view of the closure mechanism of the present invention.

Figure 19 is a schematic view of the construction of a closure of the present invention.

Fig. 20 is a structural view of the first/second wiring members of the present invention.

Fig. 21 is a schematic structural view of a conductive transition member of the present invention.

Fig. 22 is a cross-sectional view of a conductive transition member of the present invention.

Detailed Description

The invention adopts the circuit protection device and the knob reset device to be matched with the corresponding electric equipment for opening and closing, and has the advantages that when the circuit has no abnormal fault, a user can open/close the knob switch by manually rotating/reversely rotating the knob reset device, the circuit protection device is still in the process, when the circuit has the abnormal fault condition, the circuit protection device can automatically replace the melt in the circuit protection device and automatically close the knob switch, the damage of the circuit is effectively prevented, the safety performance is better, meanwhile, the arrangement of the rolling piece in the protection mechanism enables the friction mode between the conductive post and the conductive disc to be converted from sliding friction to rolling friction, the occurrence of poor contact between the conductive post and the conductive disc due to friction is avoided, besides, the protection switch can also be applied to the opening and closing of the electric equipment, compare current electrical equipment's ordinary switch, this protection switch not only can normally the switching and control electrical equipment's switching, can also carry out overload protection to electrical equipment and corresponding electric line.

The safety controller applied to circuit overload protection comprises an installation cover shell 100, a circuit protection device 200 and a knob reset device 300, wherein the knob reset device 300 is connected with a circuit in series and can be used for controlling the circuit to be closed/opened, and the circuit protection device 200 is used for cutting off the connection between the knob reset device 300 and the circuit under the condition that the circuit is abnormal and achieving the protection purpose.

The mounting cover casing 100 is a cylindrical shell structure with an open end and a closed end, the open end of the cylindrical shell structure is provided with an end cover in a matching manner, a partition plate 110 with a large surface parallel to the end cover is further fixed in the mounting cover casing 100, the area between the partition plate 110 and the closed end of the mounting cover casing 100 is a first chamber, and the area between the partition plate 110 and the open end of the mounting cover casing 100 is a second chamber.

The circuit protection device 200 is arranged in a first cavity of the installation cover shell 100, the circuit protection device 200 comprises a traction column 210, an installation support 220 and a protection mechanism 230, the protection mechanism 230 is used for fusing the internal melt of the protection mechanism 230 when the circuit is abnormal and achieving the purpose of protecting the circuit, and the protection mechanism 230 is provided with a plurality of groups of working protection mechanisms 230, and after the melt in the working protection mechanisms 230 is fused, the groups of working protection mechanisms are matched with the traction column 210 and enable the next group of protection mechanisms 230 to automatically replace the protection mechanisms 230 after the melt is fused.

The traction column 210 is coaxially fixed in the first cavity of the installation housing 100, the traction block in a cylindrical structure is coaxially fixed on the outer circular surface of the traction column 210, the outer circular surface of the traction block is provided with a traction groove 211 penetrating through the axial thickness of the traction block, the traction groove 211 can be divided into three sections, the three sections are respectively a first vertical section communicated with the end surface of the traction block facing the closed end of the installation housing 100, a second vertical section communicated with the end surface of the traction block facing the separation plate 110, and a traction section located between the first vertical section and the second vertical section, and the guide directions of the first vertical section and the second vertical section are all parallel to the axial direction of the traction column 210 and the traction section is obliquely arranged.

The connection position of the second vertical section of the traction groove 211 and the traction block is provided with a limiting protrusion 213, and the limiting protrusion 213 is positioned on one side of the second vertical section, which faces the first vertical section.

The outer circular surface of the traction column 210 is also coaxially fixed with a conductive disc 212, and the conductive disc 212 is close to the partition plate 110.

The mounting bracket 220 is made of an insulating material, the mounting bracket 220 includes an upper bracket body 221 and a lower bracket body 222, the upper bracket body 221/the lower bracket body 222 are movably mounted outside the traction column 210 through bearings, the upper bracket body 221 is located between the traction block and the closed end of the mounting cover 100, and the lower bracket body 222 is located between the traction block and the conductive disc 212.

The protection mechanism 230 is disposed between the upper frame 221 and the lower frame 222, the protection mechanism 230 includes a conductive pillar 231, an extending direction of the conductive pillar 231 is parallel to an axial direction of the traction column 210, one end of the conductive pillar 231 is fixed on the upper frame 221, the other end is a conductive end, and the conductive end penetrates through the lower frame 222 and is in conductive contact with the conductive disc 212.

The protection mechanism 230 further includes a first conductive block 232 and a second conductive block 233, a sliding member is disposed between the second conductive block 233 and the conductive post 231, the second conductive block 233 is movably mounted outside the conductive post 231 through the sliding member and forms a sliding guide fit, specifically, a sliding hole is formed in the second conductive block 233, the sliding member includes a sliding groove disposed on an outer circumferential surface of the conductive post 231 and a sliding protrusion disposed in the sliding hole, a guiding direction of the sliding groove is parallel to an extending direction of the conductive post 231, the sliding guide fit is formed between the sliding groove and the sliding protrusion, the conductive post 231 is in conductive contact with the second conductive block 233, a traction protrusion 2331 is further disposed on a side surface of the second conductive block 233 facing the traction post 210, the first conductive block 232 is fixedly mounted on the lower frame 222, and a conductive contact 2321 is disposed on a side surface of the first conductive block 232 facing away.

The protection mechanism 230 further comprises a melt 236, a first clamping piece 234 is arranged between one end of the melt 236 and the first conductive piece 232 and is clamped and mounted on the first conductive piece 232 through the first clamping piece 234, a second clamping piece 235 is arranged between the other end of the melt 236 and the second conductive piece 233 and is clamped and mounted on the second conductive piece 233 through the second clamping piece 235, and the first clamping piece 234 and the second clamping piece 235 are made of insulating materials.

The side of the first conducting block 232 facing the upper frame 221 is provided with a clamping groove, and a bolt hole is formed in the side of the first conducting block 232 parallel to the depth direction of the clamping groove.

A clamping piece 234 set up in the centre gripping inslot, it is concrete, a clamping piece 234 includes grip block 2341, construction bolt 2342, grip spring 2343, grip block 2341 sets up in the centre gripping inslot, construction bolt 2342 can pass the bolt hole and contact with grip block 2341, construction bolt 2342 is screwed up and takes place the displacement and can pull grip block 2341 simultaneous displacement, grip spring 2343's one end and grip block 2341 conflict, the other end conflicts and grip groove cell wall and grip spring 2343's elasticity makes grip block 2341 do the motion that is close to the bolt hole, grip block 2341 and grip groove just be the grip block to the region between the cell wall of construction bolt 2342.

Preferably, the side surface/groove wall of the clamping block 2341/clamping groove, which contacts with the melt 236, is a cambered surface structure matched with the melt 236.

The connection relationship between the second clamping member 235 and the second conductive block 233 is the same as the connection relationship between the first clamping member 234 and the first conductive block 232, and the description is omitted here.

The protection mechanism 230 further includes a driving spring 237 in a compressed state, the driving spring 237 is sleeved outside the conductive post 231 and made of an insulating material, one end of the driving spring 237 abuts against the second conductive block 233, the other end of the driving spring abuts against the lower frame body 222, and the elastic force of the driving spring 237 drives the second conductive block 233 to move away from the lower frame body 222 along the extending direction of the conductive post 231.

The plurality of groups of protection mechanisms 230 are arranged between the upper frame body 221 and the lower frame body 222 in an array along the circumferential direction of the traction column 210, wherein the traction protrusions 2331 on the second conductive block 233 of one group of protection mechanisms 230 are positioned right below the second vertical section of the traction groove 211, and the distance between the two adjacent groups of protection mechanisms 230 is equal to the distance between the first vertical section and the second vertical section of the traction groove 211.

A user unscrews the mounting bolt 2342 and then puts the melt 236 into the clamping area of the first clamping member 234/the second clamping member 235, and then screws the mounting bolt 2342 to mount the melt 236 between the second conductive block 233 and the first conductive block 232, because the melt 236 is normal, i.e., not fused, the elastic force of the driving spring 237 cannot drive the second conductive block 233 to move away from the lower frame body 222 along the extending direction of the conductive post 231, and when the melt 236 is fused, the elastic force of the driving spring 237 can drive the second conductive block 233 to move away from the lower frame body 222 along the extending direction of the conductive post 231;

after the fuse 236 is fused due to circuit abnormality of the protection mechanism 230 in the working state, the driving spring 237 of the protection mechanism 230 drives the second conductive block 233 to move away from the lower frame body 222 along the extending direction of the conductive post 231, during the movement, the pulling protrusion 2331 arranged on the second conductive block 233 is guided by the pulling section of the pulling groove 211 to rotate from the second vertical section to the first vertical section, so that the circuit protection device 200 integrally rotates around the pulling post 210 axially from the second vertical section to the first vertical section, and meanwhile, because the distance between the two adjacent groups of protection mechanisms 230 is equal to the distance between the first vertical section and the second vertical section of the pulling groove 211, the next group of protection mechanisms 230 replaces the fused protection mechanism 230 of the fuse 236, and the reciprocating is performed in such a way, during the replacement, because of the existence of the limiting protrusion 213, the pulling protrusion 2331 of the next group of protection mechanisms 230 of the protection mechanisms 230 replacing the fuse 236 cannot be accurately positioned to the pulling groove 211 due to rotational inertia and other reasons The vertical section II is right below.

More specifically, in the replacing process of the circuit protection device 200, friction occurs between the conductive ends of the conductive posts 231 in the plurality of groups of protection mechanisms 230 and the conductive disc 212, and the number of times of friction is equal to the number of times of replacement, if the number of times of replacement is large, the friction may cause adverse phenomena such as poor contact between the conductive ends of the conductive posts 231 and the conductive disc 212, and in order to solve the problem, the conductive ends of the conductive posts 231 are provided with rolling members for reducing the friction between the conductive ends of the conductive posts 231 and the conductive disc 212.

The conductive end face of the conductive column 231 is provided with an accommodating groove, the side face of the conductive disc 212 facing the conductive column 231 is provided with a ring groove 214 which is coaxial with the traction column 210, the rolling piece is arranged in the accommodating groove and comprises a middle block 2311, a conductive ball 2312 and a first abutting spring 2313, one end of the first abutting spring 2313 is fixed at the bottom of the accommodating groove, the other end of the first abutting spring 2313 is fixedly connected with the middle block 2311, the side face of the middle block 2311, deviating from the bottom of the accommodating groove, is a concave spherical surface matched with the conductive ball 2312, the conductive ball 2312 is arranged in the ring groove 214, and part of the conductive ball 2312 is located in the.

The friction between the conductive end of the conductive post 231 and the conductive disc 212 is converted from sliding friction to rolling friction by the cooperation of the conductive ball 2312 and the ring groove 214, so that the unfavorable phenomena of poor contact and the like between the conductive end of the conductive post 231 and the conductive disc 212 are avoided.

The knob resetting device 300 comprises a knob switch 310, a closing mechanism 320 and a wiring mechanism, wherein the wiring mechanism is used for being connected with a circuit in series, the knob switch 310 is used for being manually opened and closed by a user, and the closing mechanism 320 is used for receiving an opening and closing signal of the knob switch 310 and finally matched with the wiring mechanism to control the opening and closing of corresponding electric equipment.

The traction column 210 is coaxially provided with a first avoidance hole penetrating through the axial thickness of the traction column, the partition plate 110 is provided with a second avoidance hole coaxially arranged with the first avoidance hole, and the closed end of the installation housing 100 is provided with a through hole coaxially arranged with the second avoidance hole.

The rotary switch 310 is made of an insulating material, the rotary switch 310 comprises a rotating shaft 311, one end of the rotating shaft 311 is located in a second chamber of the installation housing 100, the other end of the rotating shaft 311 penetrates through a second avoidance hole or a second avoidance hole and is located in the through hole together, a rotary knob disc 312 is installed at the end in a matched mode, the rotating shaft 311 can rotate around the axial direction of the rotating shaft 311, and a rotary knob handle is arranged on the rotary knob disc 312 in a matched mode.

A linkage 313 is disposed between the knob disc 312 and the upper frame 221, and specifically, the linkage 313 includes a linkage block 3131, a linkage spring 3132, a first linkage groove disposed on an end surface of the knob disc 312 facing the upper frame 221, and a second linkage groove disposed on a side surface of the upper frame 221 facing the knob disc 312, one end of the linkage block 3131 is located in the first linkage groove, the other end is located in the second linkage groove, a portion of the linkage block 3131 located in the first linkage groove is a hemispherical structure, one end of the linkage spring 3132 is fixed to a groove bottom of the second linkage groove, the other end is fixedly connected to the linkage block 3131, and an elastic force of the linkage spring 3132 drives the linkage block 3131 to move away from a groove bottom of the second linkage groove.

The linkage members 313 are arranged in a plurality of groups along the circumferential direction of the knob plate 312, and the number of the groups is equal to the number of the protection mechanisms 230.

In the replacement process of the circuit protection device 200, the circuit protection device 200 integrally rotates and pulls the knob switch 310 to integrally and synchronously rotate through the linkage 313.

The closing mechanism 320 is installed at the end portion of the rotating shaft 311 located in the second cavity of the installation housing 100, the closing mechanism 320 includes a fixing block 321, a fixing rod 322 and a closing member, the fixing block 321/the fixing rod 322 are all made of conductive materials, the fixing block 321 is a round block structure and is coaxially fixed outside the rotating shaft 311, one end of the fixing rod 322 is fixed outside the fixing block 321, the other end of the fixing rod 322 is provided with a guide hole, and the fixing rod 322 is provided with two groups in an array manner along the circumferential direction of the fixing.

The closure member comprises a sliding rod 323, a contact block 324 and a buffer spring 325, wherein the sliding rod 323/the contact block 324 are made of conductive materials, the buffer spring 325 is made of insulating materials, the sliding rod 323 is arranged in a guide hole and forms sliding guide fit, the contact block 324 is fixed at one end of the sliding rod 323, the buffer spring 325 is sleeved outside a part, located between the contact block 324 and the fixed rod 322, of the sliding rod 323, the contact block 324 is driven by the elastic force of the buffer spring 325 to move away from the fixed rod 322, and the closure member is correspondingly provided with two groups, namely a first closure member and a second closure member.

During replacement of the circuit protection device 200, the knob switch 310 rotates synchronously therewith and pulls the closing mechanism 320 to rotate synchronously as a whole.

The wiring mechanism comprises a first wiring member 330, a second wiring member 350 and a conductive transition member 340, wherein the first wiring member 330 is arranged between the circuit and the first closing member, the second wiring member 350 is arranged between the conductive disc 212 and the circuit, and the conductive transition member 340 is arranged between the second closing member and the protection mechanism 230.

The first wiring member 330 comprises a first conductive rod 332 and a second conductive rod 333, one end of the first conductive rod 332 is located in the second cavity of the mounting housing 100, the other end of the first conductive rod extends out of the mounting housing 100 and is fixed with a first wiring lug 331 used for being connected with a circuit in series, the second conductive rod 333 is fixed in the second cavity of the mounting housing 100 and is in conductive contact with the interference block 324 of the first closing member, the second conductive rod 333 is located right behind the first closing member along the replacement rotation direction of the circuit protection device 200, and a first conductive plate 334 used for being in conductive connection between the first conductive rod 332 and the second conductive rod 333 is arranged between the first conductive rod 332 and the second conductive rod 333.

The second wiring member 350 includes a fourth conductive rod 352, the fourth conductive rod 352 is fixed in the second chamber of the mounting housing 100, one end of the fourth conductive rod 352 extends into the first chamber of the mounting housing 100 and is fixed with a conductive ring 353 at the end, the conductive ring 353 is coaxially fixed outside the traction column 210 and is located right below the conductive disc 212 and is in conductive contact with the conductive disc 212, and the other end of the fourth conductive rod 352 extends out of the mounting housing 100 and is fixed with a second wiring lug 351 for connecting with a circuit in series.

The conductive transition member 340 is installed on the end surface of the partition plate 110 facing the upper frame 221, the conductive transition member 340 includes an installation block 3410, a first conductive piece 3420, a second conductive piece 3430, and a constraining piece 3440, the installation block 3410 is an arc-shaped block structure, the installation block 3410 is fixed on the end surface of the partition plate 110 facing the upper frame 221, and the installation block 3410 and the traction column 210 are coaxially arranged.

Installation piece 3410 the terminal surface of support body 221 is provided with the guide board towards last support body 221, the guide board be with pull the coaxial arc plate structure of arranging of post 210, the guide board is for the guide area along pulling the post 210 and radially being provided with two sets of and two sets of guide boards between the region, installation piece 3410 towards the terminal surface of last support body 221 still be provided with the mounting hole that runs through its axial thickness, division board 110 is provided with mounting groove, wear to establish the hole towards the terminal surface of last support body 221, and mounting hole and guide area switch-on, mounting groove and mounting hole switch-on, wear to establish hole and mounting groove switch-on.

The first conductive component 3420 includes a third conductive rod 3421 and a second conductive plate 3422, the second conductive plate 3422 is fixed in the mounting groove, one end of the second conductive plate 3422 is located right below the mounting hole, the other end of the second conductive plate 3422 is located right above the through hole, the third conductive rod 3421 is fixed in the second cavity of the mounting housing 100, one end of the third conductive rod 3421 passes through the through hole and is fixedly connected with the second conductive plate 3422, the third conductive rod 3421 is also located right behind the second closing member which is rotated along the replacement of the circuit protection device 200, and the third conductive rod 3421 is in conductive contact with the abutting block 324 of the second closing member.

The second conductive device 3430 includes a second conductive sleeve made of a conductive material, a guide rod 3431, a transition block 3432 and a second abutting spring 3433 made of an insulating material, the second conductive sleeve is fixed on the second conductive plate 3422, and the guide rod 3431 is movably installed in the second conductive sleeve and forms a sliding guiding fit.

The transition block 3432 is fixed on the guide rod 3431 and is partially located in the guide area of the mounting block 3410, the side of the transition block 3432 facing the closed end of the mounting housing 100 is composed of two parts and is sequentially a guide inclined surface and a horizontal surface along the alternative rotation direction of the circuit protection device 200, the distance between the guide inclined surface and the separation plate 110 increases along the alternative rotation direction of the circuit protection device 200, and the conductive contact 2321 of the working protection mechanism 230 is in conductive contact with the horizontal surface of the transition block 3432.

An internal step is arranged in the mounting hole arranged on the mounting block 3410, one end of the abutting spring II 3433 abuts against the transition block 3432, the other end of the abutting spring II 3433 abuts against the internal step, and the elastic force of the abutting spring II 3433 drives the transition block 3432 to move away from the conductive sleeve.

The end surface of the mounting block 3410 facing the upper frame 221 is further provided with a restraining hole penetrating through the axial thickness of the mounting block, and the restraining hole is located right behind the mounting hole along the rotation direction of the circuit protection device 200.

The constraining member 3440 is disposed in the constraining hole, the constraining member 3440 includes a constraining block 3441 and a constraining spring 3443, the constraining block 3441 is disposed in the constraining hole, one end of the constraining spring 3443 is fixed to the partition plate 110, the other end is fixedly connected to the constraining block 3441, and the elastic force of the constraining spring 3443 drives the constraining block 3441 to move away from the partition plate 110.

The side of the restraint block 3441 facing away from the partition plate 110 is provided with a restraint plate 3442, the restraint plate 3442 is an arc plate structure and is coaxially arranged with the traction column 210, the side of the restraint plate 3442 facing away from the partition plate 110 is a restraint inclined surface, the distance between the restraint inclined surface and the partition plate 110 increases progressively along the alternative rotation direction of the circuit protection device 200, the restraint plate 3441 is provided with two sets along the radial direction of the traction column 210, and the area between the two sets of restraint plates 3441 is an avoidance area.

The distance between the restraining component 3440 and the second conductive component 3430 is equal to the distance between two adjacent sets of protection mechanisms 230.

In operation, current may be delivered to working protection mechanism 230 through first wiring member 330, first closure member, fixing rod 322, fixing block 321, second closure member, first conductor 3420/second conductor 3430 of conductive transition member 340, and finally delivered back to the circuit through working protection mechanism 230, conductive disc 212, and second wiring member 350.

The user makes the knob handle rotate in accordance with the replacement rotation direction of the circuit protection device 200, so that the first closing part and the first wiring member 330 and the second closing part and the first conductive part 3420 are separated from conductive contact, and the current cannot be re-transmitted to the circuit, namely the knob switch is turned off by the user; the user makes the knob handle rotate opposite to the replacement rotation direction of the circuit protection device 200, namely the conductive contact between the first closing part and the first wiring member 330 and between the second closing part and the first conductive part 3420 can be restored again, and the knob switch is turned on by the user; in the process of turning on/off the knob switch, the circuit protection device 200 cannot be integrally rotated due to the existence of the limiting protrusion 213 and the restraining member 3440, and the knob handle is rotated by the user without being affected by the circuit protection device 200 due to the existence of the linkage member 313.

After the fuse 236 is fused due to circuit abnormality of the protection mechanism 230 in the working state, the next group of protection mechanisms 230 automatically replace the protection mechanism 230 with the fused fuse 236, in the replacement process, the circuit protection device 200 pulls the knob switch 310 to synchronously rotate through the linkage 313, so that the knob switch is turned off, when a user eliminates the circuit abnormality fault, the user turns on the knob switch again by rotating the knob handle in a direction opposite to the replacement rotation direction of the circuit protection device 200, and then turns off the knob switch by rotating the knob handle in a direction consistent with the replacement rotation direction of the circuit protection device 200.

Claims

1. The safety controller is characterized by comprising an installation cover shell, a circuit protection device and a knob reset device, wherein the knob reset device is connected with a circuit in series and can be used for controlling the circuit to be closed/opened;

the mounting cover is a cylindrical shell structure with an opening at one end and a closed end, the opening end of the mounting cover is matched with the mounting cover, a partition plate with a plate surface parallel to the end cover is further fixed in the mounting cover, the area between the partition plate and the closed end of the mounting cover is a first chamber, and the area between the partition plate and the open end of the mounting cover is a second chamber;

and a limiting bulge is arranged at the connection position of the second vertical section of the traction groove and the traction block and is positioned on one side of the second vertical section, which faces the first vertical section.

2. The safety controller applied to circuit overload protection according to claim 1, wherein the outer circular surface of the traction column is coaxially fixed with a conductive disc, and the conductive disc is close to the partition plate;

the protection mechanism set up between last support body and lower support body, protection mechanism is including leading electrical pillar, the extending direction that leads electrical pillar is on a parallel with the axial of pulling the post, on the one end of leading electrical pillar was fixed in last support body, the other end was for leading electrical terminal and this end passed lower support body and with the electrically conductive dish conductive contact.

3. The safety controller applied to circuit overload protection according to claim 2, the protection mechanism also comprises a first conductive block and a second conductive block, a sliding part is arranged between the second conductive block and the conductive column, the second conductive block is movably arranged outside the conductive column through the sliding part and forms sliding guide fit, a sliding hole is arranged on the second conductive block, the sliding part comprises a sliding chute arranged on the outer circular surface of the conductive column and a sliding bulge arranged in the sliding hole, the guiding direction of the sliding chute is parallel to the extending direction of the conductive column, the sliding guide fit is formed between the sliding chute and the sliding bulge, the conductive column is in conductive contact with the second conductive block, and a traction bulge is also arranged on the side surface of the second conductive block facing the traction column, the first conducting block is fixedly arranged on the lower frame body, and a conducting contact is arranged on the side face, deviating from the upper frame body, of the first conducting block.

4. The safety controller applied to circuit overload protection according to claim 3, wherein the protection mechanism further comprises a melt, a clamping member is arranged between one end of the melt and the first conductive block, the melt is clamped and mounted on the first conductive block through the first clamping member, a second clamping member is arranged between the other end of the melt and the second conductive block, the melt is clamped and mounted on the second conductive block through the second clamping member, and the first clamping member and the second clamping member are both made of insulating materials;

and the connection relationship between the second clamping piece and the second conductive block is consistent with the connection relationship between the first clamping piece and the first conductive block.

5. The safety controller according to claim 4, wherein the protection mechanism further comprises a driving spring in a compressed state, the driving spring is sleeved outside the conductive post and made of an insulating material, one end of the driving spring abuts against the second conductive block, the other end of the driving spring abuts against the lower frame body, and the elastic force of the driving spring drives the second conductive block to move away from the lower frame body along the extending direction of the conductive post;

6. The safety controller applied to circuit overload protection according to claim 5, wherein the traction column is coaxially provided with a first avoidance hole penetrating through the axial thickness of the traction column, the partition plate is provided with a second avoidance hole coaxially arranged with the first avoidance hole, and the closed end of the mounting housing is provided with a through hole coaxially arranged with the second avoidance hole;

7. The safety controller applied to circuit overload protection according to claim 5 or 6, wherein the closing mechanism is mounted at the end of the rotating shaft located in the second chamber of the mounting housing, the closing mechanism comprises a fixed block, fixed rods and a closing member, the fixed block/the fixed rods are made of conductive materials, the fixed block is of a round block structure and is coaxially fixed outside the rotating shaft, one end of each fixed rod is fixed outside the fixed block, the other end of each fixed rod is provided with a guide hole, and the fixed rods are arranged in two groups in an array manner along the circumferential direction of the fixed block;

8. The safety controller applied to circuit overload protection according to claim 7, wherein the first wiring member comprises a first conductive rod and a second conductive rod, one end of the first conductive rod is located in the second cavity of the mounting housing, the other end of the first conductive rod extends out of the mounting housing and is fixed with a first lug plate used for being connected with a circuit in series, the second conductive rod is fixed in the second cavity of the mounting housing and is in conductive contact with a butting block of the first closing member, the second conductive rod is located right behind the first closing member along the replacement rotation direction of the circuit protection device, and a first conductive plate used for conductive connection between the first conductive rod and the second conductive rod is arranged between the first conductive rod and the second conductive rod;

9. The safety controller for circuit overload protection according to claim 8, wherein the conductive transition member is mounted on the end surface of the partition plate facing the upper frame body, the conductive transition member includes a mounting block, a first conductive piece, a second conductive piece and a constraint piece, the mounting block is an arc-shaped block structure, the mounting block is fixed on the end surface of the partition plate facing the upper frame body, and the mounting block and the traction column are coaxially arranged;