CN110021505B - Current overload protector - Google Patents
Current overload protector Download PDFInfo
- Publication number
- CN110021505B CN110021505B CN201910416115.1A CN201910416115A CN110021505B CN 110021505 B CN110021505 B CN 110021505B CN 201910416115 A CN201910416115 A CN 201910416115A CN 110021505 B CN110021505 B CN 110021505B
- Authority
- CN
- China
- Prior art keywords
- plate
- overload
- lug
- circuit
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H81/00—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting
- H01H81/02—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting electrothermally operated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H2071/147—Thermal release by expansion of a fluid
Landscapes
- Breakers (AREA)
Abstract
The invention provides a current overload protector, which comprises a protector body and an automatic triggering circuit breaking device, the protector body comprises a mounting cover shell, a circuit wiring mechanism and a protection mechanism are mounted in the mounting cover shell, the circuit wiring mechanism is used for circuit wiring among a power supply, electrical equipment and the protection mechanism, the protection mechanism comprises an overload induction component for automatically inducing whether circuit current is overloaded or not and a circuit connection component for controlling circuit circulation between the power supply current and the electrical equipment, the automatic triggering circuit breaking device comprises a limiting mechanism, a triggering mechanism and a resetting mechanism, wherein the limiting mechanism is used for limiting the conducting plate to move away from the conducting plate b under the action of the elastic force of the separating spring, the triggering mechanism is used for being triggered by the overload sensing component and enabling the limiting mechanism to cancel the limitation on the conducting plate, and the resetting mechanism is used for assisting the automatic triggering device to restore to the original state.
Description
Technical Field
The invention relates to the field of circuits, in particular to a current overload protector.
Background
The twenty-first century is an information age, the quick development of informatization makes people have greater and greater dependence on electronic equipment and products, the electronic equipment and the products can not be powered off, the safety of a power supply becomes a focus of attention of people, in order to ensure the safety of electricity consumption, a current overload protector is arranged in the electric appliance, the traditional current overload protector can cause a bimetallic strip to generate heat and deform through current overload, and make movable and static contacts separate to achieve the purpose of cutting off a power supply loop, but the bimetallic strip of the current overload protector can recover deformation within a few seconds, a reset circuit is provided, if the electric appliance needs to be detected and maintained, the power supply must be cut off firstly, at the moment, if the electric appliance has serious faults and the power supply cannot be cut off in time for maintenance, the quick reset of the protector brings greater potential safety hazards, or due to negligence of maintenance personnel, the electric appliance is maintained and detected under the condition that the power supply is not cut off, so that the electric appliance is very dangerous, the protector adopting the thermal expansion automatic circuit breaking mode is designed by the inventor, whether the current of a circuit is overloaded can be automatically induced, whether the power supply is cut off is determined, meanwhile, the circuit is reset only by manually pressing a recovery rod by a user, and the safety performance is greatly improved.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a current overload protector, wherein an automatic trigger circuit breaker is triggered by a protector body in an overload state and the current inside the protector body is cut off, so that the purpose of circuit overload protection is achieved, wherein the protector body is matched with an induction resistor to sense whether the current of a circuit is overloaded or not by adopting expansion and contraction fluid, and the sensitivity is more sensitive.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The current overload protector comprises a protector body and an automatic triggering and breaking device, wherein the protector body is used for current circulation between a power supply and electrical equipment and can automatically sense whether circuit current is overloaded or not, and the automatic triggering and breaking device is used for triggering by the protector body in a circuit current overload state and cutting off the current circulation in the protector body;
the protector body comprises a horizontally arranged mounting housing, a circuit wiring mechanism and a protection mechanism are mounted in the mounting housing, the circuit wiring mechanism is used for circuit wiring among a power supply, electrical equipment and the protection mechanism, and a base is fixedly arranged in the mounting housing;
the protection mechanism comprises an overload sensing component and a circuit connecting component, wherein the overload sensing component is used for automatically sensing whether the circuit current is overloaded or not, the circuit connecting component is used for controlling the circuit circulation between the power supply current and the electrical equipment, and the circuit connecting component can be divided into a closed state for smoothly transmitting the current from the power supply to the electrical equipment and an open state for disconnecting the current circulation between the power supply and the electrical equipment;
the overload sensing component comprises a liquid storage cylinder, a piston, a top column, a reset spring a and a current sensing piece, wherein the liquid storage cylinder is vertically fixed on the base, the top end of the liquid storage cylinder is coaxially provided with a through hole, the bottom end of the liquid storage cylinder is provided with an extending hole, the piston is arranged in the liquid storage cylinder and forms sliding guide fit, one end of the top column is fixedly connected with the piston, the other end of the top column penetrates through the through hole and is positioned right above the liquid storage cylinder, one end of the reset spring a is abutted against the piston, the other end of the reset spring a is abutted against the top end of the liquid storage cylinder, and the piston is made;
the current sensing piece comprises a sensing resistor, the sensing resistor is horizontally fixed in the liquid storage cylinder and is positioned right below the piston, the bottom of the sensing resistor is also provided with a wiring rod, the bottom end of the wiring rod penetrates through the extending hole and is positioned right below the liquid storage cylinder, the wiring rod is provided with two groups of wiring rods a and b, and the extending holes are correspondingly provided with two groups;
the top end of the induction resistor is also provided with a heat-conducting insulating sheet in a matching way, and an area between the heat-conducting insulating sheet and the piston is provided with expansion with heat and contraction with cold fluid;
the overload sensing component can be divided into an overload state of thermal expansion and cold contraction fluid, and a normal state of thermal expansion and cold contraction fluid, which is contracted and restored to an original state;
the liquid storage cylinder is provided with a plurality of groups of heat dissipation fan blades in an array manner along the circumferential direction of the liquid storage cylinder opposite to the outer circular surface of the induction resistor;
the circuit connection component comprises a conductive piece and a transition piece, the conductive piece comprises a conductive piece a, a conductive rod, a conductive piece b and a buffer spring, the conductive piece a is fixed in the installation housing, the conductive rod is vertically fixed at one end of the conductive piece a facing the overload induction component, the other end of the conductive piece a is a connecting end, the conductive piece b is movably installed outside the conductive rod and forms sliding guide fit, the conductive piece b is positioned on one side of the conductive rod facing the overload induction component, the buffer spring is sleeved outside the part of the conductive rod between the conductive piece b and the conductive piece a, the elastic force of the buffer spring drives the conductive piece b to move away from the conductive piece a, the buffer spring is made of an insulating material, and the conductive piece is provided with two groups and is respectively;
the transition piece is arranged on one side of the conductive piece facing the overload sensing component and comprises a guide pillar, a conductive plate, a separation spring and a recovery rod, the guide pillar is vertically fixed in the mounting housing and is made of an insulating material, and the conductive plate is movably arranged outside the guide pillar, forms sliding guide fit and is positioned right above the conductive plate b;
the separation spring is sleeved outside the part of the guide post below the conducting plate, the conducting plate is driven by the elastic force of the separation spring to move away from the conducting plate b, the separation spring is made of an insulating material, the recovery rod is vertically fixed on the upper end face of the conducting plate, and the top end of the recovery rod extends out of the mounting housing;
the circuit wiring mechanism comprises a wiring lug group, the wiring lug group comprises a wiring lug a, a wiring lug b, a wiring lug c and a wiring lug d, the wiring lug a and the wiring lug b are both fixed in the mounting housing and positioned on one side of the overload sensing component, which is far away from the circuit connecting component, and one ends of the wiring lug a and the wiring lug b, which are far away from the overload sensing component, are power supply wiring ends and extend out of the mounting housing;
the lug c and the lug d are fixed in the mounting housing and positioned on one side of the circuit connecting component, which is far away from the overload sensing component, one ends of the lug c and the lug d, which are far away from the circuit connecting component, are both electric appliance wiring ends and extend out of the mounting housing, and the other end of the lug c is connected with the conducting strip a of the first conducting piece;
the power live wire is connected with the power terminal of the lug plate a, and the power zero wire is connected with the power terminal of the lug plate b;
the lug plate a and the lug rod a, the lug rod b and the conducting strip a of the conducting piece II, and the lug plate b and the lug plate d are connected through electric wires;
the electrical equipment is connected between the lug c and the lug d in series;
the protector body also comprises an overload alarm mechanism, the overload alarm mechanism comprises a fixed frame, conducting strips c and an alarm lamp, the fixed frame is fixed in the mounting housing, the conducting strips c are fixed on the fixed frame and positioned right above the conducting strips, and two groups of conducting strips c are arranged;
the warning lamp is connected in series between the group of conducting strips c and the conducting strips a of the conducting pieces II of the circuit connecting member through wires;
the other group of conducting strips c are connected with the lug b in series;
the automatic triggering and breaking device is arranged between the overload sensing component and the circuit connecting component and comprises a limiting mechanism, a triggering mechanism and a resetting mechanism, wherein the limiting mechanism is used for limiting the conducting plate to move away from the conducting plate b under the action of the elastic force of the separation spring, the triggering mechanism is used for being triggered by the overload sensing component and enabling the limiting mechanism to cancel the limitation on the conducting plate, and the resetting mechanism is used for assisting the automatic triggering device to restore to the original state.
As a further improvement of the present solution.
The protection mechanism is provided with a plurality of groups, the wiring lug c/wiring lug d is correspondingly provided with a plurality of groups, wherein one group of protection mechanism, one group of wiring lug c/wiring lug d and the power supply live wire/zero wire are connected in series, the overload sensing components of the rest protection mechanisms are connected in parallel to the overload sensing components connected in series with the power supply, and the rest wiring lugs d are connected in parallel to the wiring lugs d connected in series with the power supply;
the overload alarm mechanism is correspondingly provided with a plurality of groups, wherein the other group of conducting strips c of one group of overload alarm mechanism is connected with the lug b in series, and the other group of conducting strips c of the rest overload alarm mechanism is connected to the other group of conducting strips c of the overload alarm mechanism connected with the lug b in series in parallel;
the automatic triggering circuit breaking devices are correspondingly provided with a plurality of groups.
As a further improvement of the present solution.
The limiting mechanism comprises a driving rod, a rotating plate, a linkage plate, a limiting plate and a supporting frame fixed in the mounting housing, wherein the driving rod is horizontally fixed on the recovery rod and is positioned on one side of the recovery rod facing the overload sensing component, a rotating shaft axially parallel to the distance direction between the two groups of conductive parts is arranged on the supporting frame, the rotating shaft is provided with two groups of rotating shafts which are respectively a rotating shaft I and a rotating shaft II positioned above the rotating shaft I, and the large surfaces of the rotating plate, the linkage plate and the limiting plate are all perpendicular to the axial direction of the rotating shaft;
the restraint plate is horizontally and movably arranged outside the first rotating shaft and can axially rotate around the first rotating shaft, the restraint plate is positioned on one side of the first rotating shaft, which faces the overload sensing component, a restraint groove penetrating through the restraint plate along one axial thickness of the first rotating shaft is formed in the upper end face of the restraint plate, and the restraint groove is close to the first rotating shaft;
the linkage plate is movably arranged outside the second rotating shaft and can rotate around the second rotating shaft in the two axial directions, the end face, facing the constraint plate, of the linkage plate is provided with a linkage groove penetrating through the linkage plate along the axial thickness of the second rotating shaft, the end face is also provided with a constraint bulge, the free end of the constraint bulge is located in the constraint groove, and the constraint bulge is matched with the constraint groove and limits the linkage plate to rotate around the second rotating shaft in the two axial directions towards the overload sensing component;
the side of the rotating plate facing the recovery rod is also provided with a reset bulge, the free end of the reset bulge is positioned right below the current conducting plate, the side of the rotating plate facing the linkage plate is also provided with a traction bulge, and the free end of the traction bulge is positioned in the linkage groove;
the motion state of the limiting mechanism can be divided into a limiting state for limiting the conducting plate to move away from the conducting plate b under the action of the elastic force of the separating spring and a canceling state for canceling the limitation on the conducting plate.
As a further improvement of the present solution.
The trigger mechanism is arranged between the restraint plate and the overload sensing component and comprises a touch handle and a pressure rod, the pressure rod is vertically and movably arranged on the support frame and can move along the extending direction of the pressure rod, and the bottom end of the pressure rod is in contact with the upper end surface of the restraint plate;
the touch handle is installed on the support frame in a hinged mode, the core line of the hinged shaft is parallel to the axial direction of the first rotating shaft, one end of the touch handle is located right above the top end of the pressing rod, the touch handle and the pressing rod are in contact, and the other end of the touch handle is located right above the top end of the ejection column.
As a further improvement of the present solution.
The lower end face of the restraint plate is provided with a bearing bulge, the bearing bulge is positioned between the first rotating shaft and the pressure rod, the reset mechanism is arranged right below the bearing bulge, and the reset mechanism comprises a guide rod, a bearing plate and a reset spring b;
the guide rod is vertically fixed on the support frame, the bearing plate is horizontally and movably installed outside the guide rod and forms sliding guide fit, the upper end face of the bearing plate is contacted with the bearing protrusion, the reset spring b is sleeved outside the part, located below the bearing plate, of the guide rod, and the bearing plate is driven to ascend by the elastic force of the reset spring b.
As a further improvement of the present solution.
The automatic triggering circuit breaking device also comprises a manual power-off mechanism used for manually cutting off a circuit between a power supply and electrical equipment by a user, and the manual power-off mechanism is arranged right above the pressure lever;
manual outage mechanism include slide bar, disconnected pole, reset spring c, the vertical movable mounting of slide bar is on the support frame and constitutes the slip guide cooperation, the top of slide bar still the lower terminal surface that the level was fixed with clamp plate and clamp plate contacts with the touch handle, the vertical up end that is fixed in the clamp plate of outage pole and its top stretch out to the installation housing, reset spring c cover is located the part outside and its elasticity drive clamp plate and outage pole of slide bar below and is risen.
Compared with the prior art, the protector body in an overload state has the advantages that the automatic triggering circuit-breaking device is triggered and the current inside the protector body is cut off, so that the purpose of circuit overload protection is achieved, wherein the protector body senses whether the circuit is overloaded or not by adopting the cooperation of thermal expansion and cold contraction fluid and the sensing resistor, the sensitivity is more sensitive, meanwhile, the overload alarm mechanism can enable a user to know whether the circuit is overloaded or not and whether the circuit recovers the original state or not after being overloaded, in addition, the user can remove overload faults and keep stand for a period of time to enable the protector body to recover the original state by manually pressing the recovery rod of the circuit connecting component, namely, the circuit recovers to the normal state, the user does not need to disassemble and recover the protector body, the operation is simpler and more convenient, and the safety is.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall 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 top view of the interior of the present invention.
FIG. 7 is a schematic diagram of the circuit wiring mechanism of the present invention.
Fig. 8 is a schematic structural view of an overload sensing member according to the present invention.
Fig. 9 is an internal schematic view of an overload sensing member according to the present invention.
Fig. 10 is a combination diagram of the circuit connecting member, the overload warning mechanism, and the automatic trip device of the present invention.
Fig. 11 is a combination diagram of the circuit connecting member, the overload warning mechanism, and the automatic trip device of the present invention.
Fig. 12 is a schematic structural view of the circuit connecting member of the present invention.
Fig. 13 is a schematic structural view of an overload warning mechanism of the present invention.
Fig. 14 is a schematic structural diagram of the auto-triggering circuit breaker device of the present invention.
Fig. 15 is a schematic structural view of the restricting mechanism of the present invention.
Fig. 16 is a schematic view of the limiting mechanism of the present invention.
Fig. 17 is a schematic structural view of the return mechanism of the present invention.
Fig. 18 is a schematic structural view of the trigger mechanism of the present invention.
Fig. 19 is a schematic structural diagram of the manual power-off mechanism of the present invention.
Detailed Description
The invention adopts the automatic triggering circuit-breaking device to cut off the current circulation in the protector body in the overload state, has the advantages that the protector body in the overload state enables the automatic triggering circuit-breaking device to be triggered and cuts off the current circulation in the protector body, thereby achieving the purpose of circuit overload protection, wherein the protector body adopts the matching of the thermal expansion and cold contraction fluid and the induction resistor to sense whether the circuit current is overloaded or not, the sensitivity is more sensitive, meanwhile, the overload alarm mechanism can enable a user to know whether the circuit is overloaded or not in real time and whether the circuit recovers the original state after being overloaded or not, besides, the user can remove the overload fault and keep stand for a period of time to enable the protector body to recover the original state by pressing the recovery rod of the circuit connecting component by hand, the circuit resumes normally promptly, need not the user and dismantles the recovery to the protector body, and the operation is simple convenient more and the security strengthens greatly.
The current overload protector comprises a protector body 100 and an automatic triggering and breaking device 200, wherein the protector body 100 is used for current circulation between a power supply and electrical equipment and can automatically sense whether circuit current is overloaded, and the automatic triggering and breaking device 200 is used for triggering the protector body 100 under the state of circuit current overload and cutting off the current circulation in the protector body 100.
The protector body 100 comprises a horizontally arranged mounting housing, a circuit wiring mechanism 120 and a protection mechanism are mounted in the mounting housing, the circuit wiring mechanism 120 is used for circuit wiring among a power supply, electrical equipment and the protection mechanism, and a base is fixedly arranged in the mounting housing.
The protection mechanism includes an overload sensing member 110 and a circuit connecting member 130, wherein the overload sensing member 110 is used for automatically sensing whether a circuit current is overloaded, the circuit connecting member 130 is used for controlling a circuit between a power supply current and an electrical apparatus to circulate, and the circuit connecting member 130 can be divided into a closed state for smoothly transmitting the current from the power supply to the electrical apparatus and an open state for disconnecting the current from the power supply to the electrical apparatus.
The current induction piece include inductive resistor 116, inductive resistor 116 level be fixed in liquid storage cylinder 111 and be located piston 113 under, inductive resistor 116's bottom still is provided with the terminal rod and the bottom of terminal rod passes and stretches out the hole and be located liquid storage cylinder 111 under, the terminal rod is provided with two sets ofly and is terminal rod a117, terminal rod b118 respectively, and it should have seted up two sets ofly to stretch out the hole.
The top end of the induction resistor 116 is also provided with a heat-conducting insulating sheet in a matching manner, and an area between the heat-conducting insulating sheet and the piston 113 is provided with expansion and contraction fluid.
The overload sensing member 110 can be classified into an overload state in which the expansion and contraction fluid is thermally expanded, and a normal state in which the expansion and contraction fluid is cooled and restored to its original state.
When the circuit current is overloaded, the sensing resistor 116 generates a large amount of heat and causes thermal expansion of the thermal expansion and contraction fluid, the overload sensing member 110 is switched to the overload state, so that the piston 113/the top pillar 114 moves away from the sensing resistor 116, and finally the circuit connecting member 130 is switched to the disconnection state, i.e. the circuit is disconnected, by automatically triggering the circuit breaking device 200; after the electrician checks and removes the overload fault of the circuit and stops for a period of time, that is, the overload sensing member 110 is switched to the normal state and the overload fault of the circuit is removed, at this time, the piston 113/the top pillar 114 moves close to the sensing resistor 116 under the elastic force of the return spring a115 and returns to the original state, and finally, the circuit connecting member 130 is switched to the closed state by automatically triggering the circuit breaking device 200, and the circuit returns to the normal state.
Preferably, in order to shorten the time required for the temperature of the sensing resistor 116 to return to normal, the liquid storage cylinder 111 is provided with a plurality of groups of heat dissipation fan blades 112 along the circumferential direction thereof in an array manner with respect to the outer circumferential surface of the sensing resistor 116.
The circuit connecting member 130 includes a conductive member and a transition member, the conductive member includes a conductive sheet a131, a conductive rod 132, a conductive sheet b133 and a buffer spring 134, the conductive sheet a131 is fixed in the mounting housing, the conductive rod 132 is vertically fixed at one end of the conductive sheet a131 facing the overload sensing member 110, the other end of the conductive sheet a131 is a connection end, the conductive sheet b133 is movably mounted outside the conductive rod 132 and forms a sliding guide fit, the conductive sheet b133 is located at one side of the conductive rod 132 facing the overload sensing member 110, the buffer spring 134 is sleeved outside a portion of the conductive rod 132 located between the conductive sheet b133 and the conductive sheet a131, and the conductive sheet b133 is driven by elasticity of the buffer spring to move away from the conductive sheet a131, and the buffer spring 134 is made of an insulating material, the conductive member is provided with two sets.
The transition piece is disposed on one side of the conductive piece facing the overload sensing member 110, and includes a guide post 135, a conductive plate 136, a separation spring 137, and a recovery rod 138, the guide post 135 is vertically fixed in the mounting housing and is made of an insulating material, and the conductive plate 136 is movably mounted outside the guide post 135 and forms a sliding guide fit and is located right above the conductive plate b 133.
The separation spring 137 is sleeved outside a portion of the guide post 135 located below the conductive plate 136, the conductive plate 136 is driven by the elastic force of the separation spring 137 to move away from the conductive plate b133, the recovery rod 138 is vertically fixed to the upper end surface of the conductive plate 136, and the top end of the recovery rod extends out of the mounting housing.
When the circuit is not overloaded, the overload sensing member 110 is in a normal state, and at this time, the auto-triggering circuit breaker 200 is not triggered and limits the conductive plate 136 to move away from the conductive plate b133 under the elastic force of the separation spring 137, so that the circuit connecting member 130 is in a closed state; when the circuit is overloaded, the overload sensing member 110 is in an overload state and the auto-triggering breaking device 200 is triggered, the auto-triggering breaking device 200 removes the restriction of the conductive plate 136, and the conductive plate 136 moves away from the conductive plate b133 by the elastic force of the separation spring 137, so that the circuit connection member 130 is in a disconnection state.
The circuit wiring mechanism 120 comprises a wiring lug group, the wiring lug group comprises a wiring lug a121, a wiring lug b122, a wiring lug c123 and a wiring lug d124, the wiring lug a121 and the wiring lug b122 are both fixed in the installation housing and positioned on one side of the overload sensing component 110 departing from the circuit connecting component 130, and one ends of the overload sensing component 110 and the other ends of the overload sensing component are both power supply terminals and extend out of the installation housing.
The lug c123 and the lug d124 are both fixed in the mounting housing and located on one side of the circuit connecting member 130 away from the overload sensing member 110, one ends of the lug c123 and the lug d away from the circuit connecting member 130 are both electric appliance terminals and extend out of the mounting housing, and the other end of the lug c123 is connected with the first conducting strip a131 of the first conducting piece.
The live power wire is connected with the power terminal of the lug a121, and the neutral power wire is connected with the power terminal of the lug b 122.
The connection piece a121 and the connection rod a117, the connection rod b118 and the conducting strip a131 of the second conducting device, the connection piece b122 and the connection piece d124 are connected through electric wires.
The electrical equipment is connected in series between the lug c123 and the lug d 124.
When the circuit is not overloaded, that is, the overload sensing member 110 is in a normal state and the circuit connecting member 130 is in a closed state, the power current can form a complete current closed loop through the lug a121, the current sensing part, the second conducting part, the transition part, the first conducting part, the lug c123, the electrical equipment, the lug d124 and the lug b 122; when the circuit is overloaded, i.e. the overload sensing member 110 is in an overload state and the circuit connecting member 130 is in a disconnection state, the current is disconnected and circulated, so that the purpose of protecting the circuit and the electrical equipment can be achieved.
Preferably, in order to improve the utilization rate, even though the overload protector can connect and protect multiple groups of electrical equipment and the multiple groups of electrical equipment do not interfere with each other, the protection mechanism is correspondingly provided with a plurality of groups, the lug c 123/lug d124 is correspondingly provided with a plurality of groups, wherein a group of protection mechanism, a group of lug c 123/lug d124 and the power supply live wire/zero wire are connected in series, the overload sensing component 110 of the remaining protection mechanism is connected in parallel to the overload sensing component 110 connected in series with the power supply, and the remaining lug d124 is connected in parallel to the lug d124 connected in series with the power supply, wherein the parallel connection mode is the prior art, and is not described herein again.
More specifically, the automatic triggering circuit-breaking device 200 automatically breaks current circulation under the condition of circuit overload, and the overload sensing member 110 can be restored to the original state after standing for a period of time, and the circuit is restored to the original state accordingly, so that the user can know whether the circuit is overloaded in real time and whether the circuit is restored to the original state after being overloaded, the protector body 100 further comprises an overload alarm mechanism 140, and the overload alarm mechanism 140 is correspondingly provided with a plurality of groups.
The overload warning mechanism 140 includes a fixing frame 141, conducting strips c142 and a warning lamp 143, wherein the fixing frame 141 is fixed in the mounting housing, the conducting strips c142 are fixed on the fixing frame 141 and the conducting strips c142 are located right above the conducting plate 136, and two groups of conducting strips c142 are provided.
The warning lamp 143 is connected in series between the set of conductive sheets c142 and the set of conductive sheets a131 of the second conductive piece of the circuit connecting member 130 through a wire.
The other conducting strip c142 of the overload alarm mechanism 140 is connected in series with the lug b122, and the other conducting strip c142 of the residual overload alarm mechanism 140 is connected in parallel to the other conducting strip c142 of the overload alarm mechanism 140 connected in series with the lug b122, wherein the series/parallel connection mode is the prior art, and is not described herein again.
When the circuit is overloaded, the overload sensing member 110 is in an overload state and triggers the automatic triggering circuit-breaking device 200, the automatic triggering circuit-breaking device 200 cancels the limitation of the conductive plate 136, the conductive plate 136 moves away from the conductive plate b133 under the elastic force of the separation spring 137, so that the circuit connecting member 130 is in a disconnected state, meanwhile, the conductive plate 136 is in contact with the two groups of conductive plates c142 of the overload alarm mechanism 140, at this time, the power current forms a complete current closed loop with the two groups of conductive plates c142 and the conductive plate b122 through the lug a121, the current sensing element, the second conductive element, the warning lamp 143, the conductive plate 136, and the lug b122, and the warning lamp 143 is turned on;
when the circuit is not overloaded, the conductive plate 136 is not in contact with the two sets of conductive plates c142 of the overload alarm mechanism 140, the warning lamp 143 is not lighted, and a user can know whether the circuit is overloaded or not in real time according to the lighting condition of the warning lamp 143 and whether the circuit is recovered after being overloaded or not.
The automatic triggering and breaking device 200 is disposed between the overload sensing member 110 and the circuit connecting member 130, and a plurality of groups of the automatic triggering and breaking device 200 are correspondingly disposed, the automatic triggering and breaking device 200 includes a limiting mechanism 210, a triggering mechanism 220, and a resetting mechanism 230, the limiting mechanism 210 is used for limiting the conducting plate 136 to move away from the conducting plate b133 under the elastic force of the separating spring 137, the triggering mechanism 220 is used for being triggered by the overload sensing member 110 and enabling the limiting mechanism 210 to cancel the limitation on the conducting plate 136, and the resetting mechanism 230 is used for assisting the automatic triggering device 200 to return to the original state.
The limiting mechanism 210 comprises a driving rod 212, a rotating plate 211, a linkage plate 213, a limiting plate 214 and a supporting frame fixed in the mounting housing, wherein the driving rod 212 is horizontally fixed on the recovery rod 138 and is positioned on one side of the recovery rod 138 facing the overload sensing component 110, a rotating shaft axially parallel to the distance direction between the two groups of conductive pieces is arranged on the supporting frame, the rotating shaft is provided with two groups of rotating shafts which are respectively a first rotating shaft and a second rotating shaft positioned above the first rotating shaft, and the large surfaces of the rotating plate 211, the linkage plate 213 and the limiting plate 214 are all perpendicular to the axial direction of the rotating shaft.
The constraining plate 214 is horizontally and movably mounted outside the first rotating shaft and can axially rotate around the first rotating shaft, the constraining plate 214 is located on one side of the first rotating shaft facing the overload sensing component 110, a constraining groove penetrating through the constraining plate 214 along one axial thickness of the first rotating shaft is formed in the upper end face of the constraining plate 214, and the constraining groove is close to the first rotating shaft.
The linkage plate 213 is movably installed outside the second rotating shaft and can rotate around the second rotating shaft in two axial directions, the end surface of the linkage plate 213 facing the constraint plate 214 is provided with a linkage groove 218 penetrating through the linkage plate along one axial thickness of the rotating shaft, the end surface is further provided with a constraint bulge of which the free end is located in the constraint groove, and the constraint bulge is matched with the constraint groove and limits the linkage plate 213 to rotate around the second rotating shaft in two axial directions towards the overload sensing component 110.
The rotating plate 211 is movably mounted outside the rotating shaft and can axially rotate around the rotating shaft, a limiting protrusion 215 is arranged on the side surface of the rotating plate 211 facing the recovery rod 138, the limiting protrusion 215 is positioned right above the driving rod 212 and contacts with the driving rod 212, a reset protrusion 217 is further arranged on the side surface of the rotating plate 211 facing the recovery rod 138, the free end of the reset protrusion 217 is positioned right below the conductive plate 136, a traction protrusion 216 is further arranged on the side surface of the rotating plate 211 facing the linkage plate 213, and the free end of the traction protrusion 216 is positioned in the linkage groove 218.
The movement state of the restriction mechanism 210 can be divided into a restriction state of restricting the conductive plate 136 from moving away from the conductive plate b133 under the elastic force of the separation spring 137, and a cancellation state of canceling the restriction on the conductive plate 136.
When the circuit is overloaded, the top pillar 114 of the overload sensing member 110 rises and contacts with the trigger mechanism 220, the trigger mechanism 220 is triggered and causes the constraint plate 214 to rotate away from the linkage plate 213, at this time, the constraint protrusion arranged on the linkage plate 213 is separated from the constraint groove, then under the elastic action of the separation spring 137, the circuit connecting member 130 is switched to the off state, meanwhile, the recovery rod 138 rises and pulls the driving rod 212 to rise synchronously, the driving rod 212 rises and causes the rotating plate 211 to rotate towards the linkage plate 213 through the constraint protrusion 215, the linkage plate 213 rotates and causes the linkage plate 213 to rotate away from the recovery rod 138 through the matching of the traction protrusion 216 and the linkage groove 218, namely, the limit mechanism 210 is switched to the undone state;
when the circuit is restored to normal, the top pillar 114 of the overload sensing component 110 descends and restores to the original state, the triggering mechanism 220 and the restraining plate 214 are restored to the original state with the assistance of the resetting mechanism 230, then the user presses the recovery rod 138 by hand to descend, the recovery rod 138 descends and pulls the driving rod 212 to descend synchronously, when the driving rod 212 descends to the lower side of the limiting protrusion 215, the conductive plate 136 contacts with the reset protrusion 217 and rotates the rotating plate 211 away from the linking plate 213, the linking plate 213 rotates and rotates the linking plate 213 towards the restoring rod 138 through the cooperation of the traction protrusion 216 and the linking groove 218, and finally the limiting protrusion arranged on the linking plate 213 is positioned in the limiting groove again, the limiting mechanism 210 is restored to the limiting state, and then the user releases his hand, the driving rod 212 ascends and contacts with the limiting protrusion 215 again, and the circuit connecting member 130 is switched to the closed state.
The triggering mechanism 220 is disposed between the constraining plate 214 and the overload sensing member 110, the triggering mechanism 220 includes a contact handle 221 and a pressing rod 222, the pressing rod 222 is vertically movably mounted on the supporting frame and can move along its extending direction, and the bottom end of the pressing rod 222 contacts with the upper end surface of the constraining plate 214.
The contact handle 221 is mounted on the support frame in a hinged manner, the core line of the hinged shaft is parallel to the axial direction of the first rotating shaft, one end of the contact handle 221 is located right above the top end of the pressing rod 222 and contacts with the top end of the pressing rod, and the other end of the contact handle 221 is located right above the top end of the top column 114.
When the circuit is overloaded, the top pillar 114 of the overload sensing member 110 rises and contacts with the contact handle 221, and pushes the contact handle 221 to rotate axially around the hinge shaft between the contact handle and the support frame, the contact handle 221 rotates and pushes the pressing rod 222 to descend, and the pressing rod 222 descends to make the restraining plate 214 rotate away from the linkage plate 213.
The lower end face of the constraint plate 214 is provided with a bearing protrusion 219, the bearing protrusion 219 is located between the first rotating shaft and the pressing rod 222, the reset mechanism 230 is arranged right below the bearing protrusion 219, and the reset mechanism 230 comprises a guide rod 231, a bearing plate 232 and a reset spring b 233.
The guide rod 231 is vertically fixed on the support frame, the support plate 232 is horizontally and movably installed outside the guide rod 231 and forms sliding guide fit, the upper end surface of the support plate 232 is in contact with the support protrusion 219, the return spring b233 is sleeved outside a portion of the guide rod 231 below the support plate 232, and the support plate 232 is driven to ascend by the elastic force of the return spring b 233.
When the circuit is recovered to normal, the top pillar 114 of the overload sensing component 110 descends and returns to its original state, and meanwhile, the elastic force of the return spring b233 drives the supporting plate 232 to ascend, the supporting plate 232 ascends and makes the restraining plate 214 rotate toward the linking plate 213, that is, the restraining plate 214 returns to its original state, and simultaneously the triggering mechanism 220 returns to its original state.
More specifically, when the electrical equipment is replaced or maintained, the circuit between the power source and the electrical equipment is cut off, and for this reason, the automatic trigger circuit breaker 200 further includes a manual power cut-off mechanism 240 for the user to manually cut off the circuit between the power source and the electrical equipment, and the manual power cut-off mechanism 240 is disposed directly above the pressing rod 222.
When the electrical equipment is replaced or repaired, the user can press the electric pole 242 with his hand to lower the pressure lever 222, thereby switching the restriction mechanism 210 to the cancelled state and the circuit connection member 130 to the disconnected state.
In actual operation, if the circuit is overloaded, the sensing resistor 116 generates a large amount of heat and causes thermal expansion of the thermal expansion and contraction fluid, the overload sensing member 110 is switched to an overload state, so that the piston 113/the top pillar 114 performs an ascending motion away from the sensing resistor 116, the top pillar 114 ascends and contacts with the touch handle 221 and pushes the touch handle 221 to axially rotate around a hinge shaft between the touch handle and the support frame, the touch handle 221 rotates and pushes the pressing rod 222 to descend, the pressing rod 222 descends and makes the restraining plate 214 rotate away from the linkage plate 213, at this time, the restraining protrusion arranged on the linkage plate 213 is separated from the restraining groove, then under the elastic force of the separation spring 137, the circuit connecting member 130 is switched to a disconnection state, the recovery rod 138 ascends and pulls the driving rod 212 to synchronously ascend, the driving rod 212 ascends and makes the rotating plate 211 rotate towards the linkage plate 213 through the restraining protrusion 215, the linkage plate 213 rotates and makes the linkage plate 213 rotate away from the recovery rod 138 through the cooperation of the traction protrusion 216 and, that is, the limiting mechanism 210 is switched to the deactivated state, wherein the circuit connecting member 130 is switched to the disconnected state, so that the circuit between the electrical equipment and the power supply is disconnected, and the purpose of protecting the circuit is achieved;
after electrician checks and eliminates the overload fault of the circuit and stops for a period of time, that is, the overload sensing component 110 is switched to a normal state and the overload fault of the circuit is eliminated, at this time, the piston 113/the top column 114 performs a descending motion close to the sensing resistor 116 under the elastic force of the return spring a115 and returns to the original state, at the same time, the elastic force of the return spring b233 drives the supporting plate 232 to ascend, the supporting plate 232 ascends and makes the restriction plate 214 rotate towards the linkage plate 213, that is, the restriction plate 214 returns to the original state, and the trigger mechanism 220 returns to the original state, then a user presses the recovery rod 138 to descend by hand, the recovery rod 138 descends and pulls the driving rod 212 to descend synchronously, when the driving rod 212 descends to below the restriction protrusion 215, the conductive plate 136 contacts with the return protrusion 217 and makes the rotating plate 211 rotate away from the linkage plate 213, the linkage plate 213 rotates and makes the linkage plate 213 rotate towards the recovery rod 138 through the cooperation of the traction protrusion 216, And finally, the constraining protrusion disposed on the linking plate 213 is positioned in the constraining groove again, the constraining mechanism 210 is restored to the constraining state, and then the user releases his hand, the driving rod 212 rises and re-contacts with the constraining protrusion 215, and the circuit connecting member 130 is switched to the closed state, and the circuit is restored to normal.
Claims (10)
1. The current overload protector is characterized by comprising a protector body and an automatic triggering and breaking device, wherein the protector body is used for current circulation between a power supply and electrical equipment and can automatically induce whether circuit current is overloaded or not, and the automatic triggering and breaking device is used for triggering by the protector body in a circuit current overload state and cutting off the current circulation in the protector body;
the protector body comprises a horizontally arranged mounting housing, a circuit wiring mechanism and a protection mechanism are mounted in the mounting housing, the circuit wiring mechanism is used for circuit wiring among a power supply, electrical equipment and the protection mechanism, and a base is fixedly arranged in the mounting housing;
the protection mechanism comprises an overload sensing component and a circuit connecting component, wherein the overload sensing component is used for automatically sensing whether the circuit current is overloaded or not, the circuit connecting component is used for controlling the circuit circulation between the power supply current and the electrical equipment, and the circuit connecting component can be divided into a closed state for smoothly transmitting the current from the power supply to the electrical equipment and an open state for disconnecting the current circulation between the power supply and the electrical equipment;
overload response component include the liquid storage cylinder, the piston, the fore-set, reset spring an, the electric current response piece, the liquid storage cylinder is vertical be fixed in on the base and its top is coaxial to be seted up and to wear to establish the hole, the hole has been seted up to the bottom, the piston sets up in the liquid storage cylinder and constitutes the sliding guide cooperation, the one end and the piston fixed connection of fore-set, the other end pass and wear to establish the hole and be located directly over the liquid storage cylinder, reset spring an's one end is contradicted with the piston, the other end is contradicted with the top of liquid storage cylinder and reset spring an's elasticity makes the piston do the motion that is close.
2. The current overload protector according to claim 1, wherein the current sensing member includes a sensing resistor, the sensing resistor is horizontally fixed in the reservoir and located right below the piston, the bottom of the sensing resistor is further provided with a terminal rod, the bottom end of the terminal rod passes through the extension hole and is located right below the reservoir, the terminal rod is provided with two sets of terminal rods a and b, and the extension holes are correspondingly provided with two sets.
3. The current overload protector according to claim 2, wherein the top end of the inductive resistor is further provided with a heat-conducting insulating sheet in a matching manner, and an area between the heat-conducting insulating sheet and the piston is provided with expansion and contraction fluid;
the overload sensing component can be divided into an overload state of thermal expansion and cold contraction fluid, and a normal state of thermal expansion and cold contraction fluid, which is contracted and restored to an original state;
the liquid storage cylinder is provided with a plurality of groups of heat dissipation fan blades in an array manner along the circumferential direction of the liquid storage cylinder opposite to the outer circular surface of the induction resistor;
the circuit connection component comprises a conductive piece and a transition piece, the conductive piece comprises a conductive piece a, a conductive rod, a conductive piece b and a buffer spring, the conductive piece a is fixed in the installation housing, the conductive rod is vertically fixed at one end of the conductive piece a facing the overload induction component, the other end of the conductive piece a is a connecting end, the conductive piece b is movably installed outside the conductive rod and forms sliding guide fit, the conductive piece b is located on one side of the conductive rod facing the overload induction component, the buffer spring is sleeved outside the part of the conductive rod between the conductive piece b and the conductive piece a, the conductive piece b is driven by elasticity of the buffer spring to move away from the conductive piece a, the buffer spring is made of an insulating material, and the conductive piece is provided with two groups and is a.
4. The overload current protector according to claim 3, wherein the transition member is disposed on a side of the conductive member facing the overload sensing member, and includes a guide post, a conductive plate, a separation spring, and a recovery rod, the guide post is vertically fixed in the mounting housing and is made of an insulating material, and the conductive plate is movably mounted outside the guide post and forms a sliding guide fit and is located right above the conductive plate b;
the separation spring is sleeved outside the part of the guide post below the conducting plate, the conducting plate is driven by the elastic force of the separation spring to move away from the conducting plate b, the separation spring is made of insulating materials, the recovery rod is vertically fixed on the upper end face of the conducting plate, and the top end of the recovery rod extends out of the mounting housing.
5. The current overload protector according to claim 4, wherein the circuit wiring mechanism comprises a wiring lug group, the wiring lug group comprises a wiring lug a, a wiring lug b, a wiring lug c and a wiring lug d, the wiring lug a and the wiring lug b are both fixed in the mounting housing and positioned on one side of the overload sensing member, which is far away from the circuit connecting member, and one ends of the wiring lug a and the wiring lug b, which are far away from the overload sensing member, are both power supply terminals and extend out of the mounting housing;
the lug c and the lug d are fixed in the mounting housing and positioned on one side of the circuit connecting component, which is far away from the overload sensing component, one ends of the lug c and the lug d, which are far away from the circuit connecting component, are both electric appliance wiring ends and extend out of the mounting housing, and the other end of the lug c is connected with the conducting strip a of the first conducting piece;
the live wire of the power supply is connected with the power supply terminal of the lug plate a, and the zero line of the power supply is connected with the power supply terminal of the lug plate b;
the lug plate a and the lug rod a, the lug rod b and the conducting strip a of the conducting piece II, and the lug plate b and the lug plate d are connected through electric wires;
the electrical equipment is connected between the lug c and the lug d in series;
the protector body also comprises an overload alarm mechanism, the overload alarm mechanism comprises a fixed frame, conducting strips c and an alarm lamp, the fixed frame is fixed in the mounting housing, the conducting strips c are fixed on the fixed frame and positioned right above the conducting strips, and two groups of conducting strips c are arranged;
the warning lamp is connected in series between the group of conducting strips c and the conducting strips a of the conducting pieces II of the circuit connecting member through wires;
the other group of conducting strips c are connected with the lug b in series;
the automatic triggering and breaking device is arranged between the overload sensing component and the circuit connecting component and comprises a limiting mechanism, a triggering mechanism and a resetting mechanism, wherein the limiting mechanism is used for limiting the conducting plate to move away from the conducting plate b under the action of the elastic force of the separation spring, the triggering mechanism is used for being triggered by the overload sensing component and enabling the limiting mechanism to cancel the limitation on the conducting plate, and the resetting mechanism is used for assisting the automatic triggering device to restore to the original state.
6. The current overload protector according to claim 5, wherein the protection mechanism is provided with a plurality of groups, and the connection lug c/connection lug d is correspondingly provided with a plurality of groups, wherein a group of protection mechanisms, a group of connection lugs c/connection lugs d and a power supply live/neutral wire are connected in series, the overload sensing component of the residual protection mechanism is connected in parallel to the overload sensing component connected in series with the power supply, and the residual connection lug d is connected in parallel to the connection lug d connected in series with the power supply;
the overload alarm mechanism is correspondingly provided with a plurality of groups, wherein the other group of conducting strips c of one group of overload alarm mechanism is connected with the lug b in series, and the other group of conducting strips c of the rest overload alarm mechanism is connected to the other group of conducting strips c of the overload alarm mechanism connected with the lug b in series in parallel;
the automatic triggering circuit breaking devices are correspondingly provided with a plurality of groups.
7. The current overload protector according to claim 6, wherein the limiting mechanism includes a driving rod, a rotating plate, a linkage plate, a constraint plate, and a supporting frame fixed in the mounting housing, the driving rod is horizontally fixed on the recovery rod and located on one side of the recovery rod facing the overload sensing member, the supporting frame is provided with two sets of rotating shafts axially parallel to the distance direction between the two sets of conductive members, the rotating shafts are provided with two sets of rotating shafts, namely a first rotating shaft and a second rotating shaft located above the first rotating shaft, and the large surfaces of the rotating plate, the linkage plate, and the constraint plate are all perpendicular to the axial direction of the rotating shafts;
the restraint plate is horizontally and movably arranged outside the first rotating shaft and can axially rotate around the first rotating shaft, the restraint plate is positioned on one side of the first rotating shaft, which faces the overload sensing component, a restraint groove penetrating through the restraint plate along one axial thickness of the first rotating shaft is formed in the upper end face of the restraint plate, and the restraint groove is close to the first rotating shaft;
the linkage plate is movably arranged outside the second rotating shaft and can rotate around the second rotating shaft in the two axial directions, the end face, facing the constraint plate, of the linkage plate is provided with a linkage groove penetrating through the linkage plate along the axial thickness of the second rotating shaft, the end face is also provided with a constraint bulge, the free end of the constraint bulge is located in the constraint groove, and the constraint bulge is matched with the constraint groove and limits the linkage plate to rotate around the second rotating shaft in the two axial directions towards the overload sensing component;
the side of the rotating plate facing the recovery rod is also provided with a reset bulge, the free end of the reset bulge is positioned right below the current conducting plate, the side of the rotating plate facing the linkage plate is also provided with a traction bulge, and the free end of the traction bulge is positioned in the linkage groove;
the motion state of the limiting mechanism can be divided into a limiting state for limiting the conducting plate to move away from the conducting plate b under the action of the elastic force of the separating spring and a canceling state for canceling the limitation on the conducting plate.
8. The current overload protector according to claim 7, wherein the trigger mechanism is disposed between the restraint plate and the overload sensing member, the trigger mechanism includes a contact handle and a pressure lever, the pressure lever is vertically movably mounted on the support frame and can move along its extending direction, and a bottom end of the pressure lever contacts with an upper end surface of the restraint plate;
the touch handle is installed on the support frame in a hinged mode, the core line of the hinged shaft is parallel to the axial direction of the first rotating shaft, one end of the touch handle is located right above the top end of the pressing rod, the touch handle and the pressing rod are in contact, and the other end of the touch handle is located right above the top end of the ejection column.
9. The current overload protector according to claim 8, wherein a supporting protrusion is arranged on the lower end surface of the restraint plate and located between the first rotating shaft and the pressure lever, the reset mechanism is arranged right below the supporting protrusion, and the reset mechanism comprises a guide rod, a supporting plate and a reset spring b;
the guide rod is vertically fixed on the support frame, the bearing plate is horizontally and movably installed outside the guide rod and forms sliding guide fit, the upper end face of the bearing plate is contacted with the bearing protrusion, the reset spring b is sleeved outside the part, located below the bearing plate, of the guide rod, and the bearing plate is driven to ascend by the elastic force of the reset spring b.
10. The current overload protector according to claim 9, wherein the automatically triggered trip unit further comprises a manual power cut-off mechanism for a user to manually cut off a circuit between the power source and the electrical equipment, the manual power cut-off mechanism being disposed directly above the pressing rod;
manual outage mechanism include slide bar, disconnected pole, reset spring c, the vertical movable mounting of slide bar is on the support frame and constitutes the slip guide cooperation, the top of slide bar still the lower terminal surface that the level was fixed with clamp plate and clamp plate contacts with the touch handle, the vertical up end that is fixed in the clamp plate of outage pole and its top stretch out to the installation housing, reset spring c cover is located the part outside and its elasticity drive clamp plate and outage pole of slide bar below and is risen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416115.1A CN110021505B (en) | 2019-05-19 | 2019-05-19 | Current overload protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416115.1A CN110021505B (en) | 2019-05-19 | 2019-05-19 | Current overload protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110021505A CN110021505A (en) | 2019-07-16 |
| CN110021505B true CN110021505B (en) | 2021-03-09 |
Family
ID=67193986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910416115.1A Active CN110021505B (en) | 2019-05-19 | 2019-05-19 | Current overload protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110021505B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410107B (en) * | 2021-08-20 | 2022-01-28 | 江西韬瑞自动化设备有限公司 | Circuit protection device with power supply cut-off early warning function based on standby power supply |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3631405A1 (en) * | 1986-09-16 | 1988-03-17 | Felten & Guilleaume Energie | Hermetically sealed, permanent-magnet trip device for residual current devices (earth leakage current circuit breakers) |
| DE19527254C2 (en) * | 1995-07-26 | 2000-01-20 | Thermik Geraetebau Gmbh | Temperature monitor |
| CN203398044U (en) * | 2013-08-26 | 2014-01-15 | 张志挺 | A novel overload protection switch |
| CN205211660U (en) * | 2015-09-02 | 2016-05-04 | 中山市中恒电器有限公司 | Liquid expanding heavy current temperature controller |
| CN206349326U (en) * | 2017-01-10 | 2017-07-21 | 广州鑫村工控设备有限公司 | A kind of automatically reset adjustable breaker |
| US20180286617A1 (en) * | 2017-03-28 | 2018-10-04 | Management Sciences, Inc. | Method, System, and Apparatus to Prevent Electrical or Thermal-Based Hazards in Conduits |
| CN207038461U (en) * | 2017-08-04 | 2018-02-23 | 南京智亚源电力科技有限公司 | A kind of temperature induction type load break switch |
| CN108257826B (en) * | 2018-02-05 | 2020-02-18 | 德力西电气有限公司 | Moulded case circuit breaker with overload alarming function |
| CN208400781U (en) * | 2018-04-05 | 2019-01-18 | 骆瑞刚 | A kind of liquid with overload current rises formula temperature controller |
-
2019
- 2019-05-19 CN CN201910416115.1A patent/CN110021505B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110021505A (en) | 2019-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110021505B (en) | Current overload protector | |
| CN101620959B (en) | Rocker type fire preventing switch | |
| CN110112700B (en) | Current overload protection method | |
| CN110071020B (en) | Automatic circuit breaking protector for current overload | |
| CN209402148U (en) | A kind of short-circuit protection circuit and device of automobile power supply system | |
| CN103620715A (en) | Short-circuiting device for photovoltaic array | |
| CN109378244B (en) | Safe waterproof knife switch | |
| CN202076199U (en) | Bipolar circuit breaker | |
| CN203553080U (en) | Protection switch for preventing overcurrent and overvoltage | |
| CN208077884U (en) | A kind of relay false touch prevention device | |
| CN105759205A (en) | Online monitoring device for mechanical characteristics of circuit breaker and coil current of driving mechanism | |
| CN201478226U (en) | Rocker fire protection switch | |
| CN113541097A (en) | Automatic short circuit breaking alarm equipment for wiring terminal block for electric power | |
| CN113113250A (en) | Overload protector with built-in power-off indication function | |
| CN102522279A (en) | Uncap releasing protecting device of direct current belt fuse breaker | |
| CN106160711A (en) | The Contactless contactor that tape jam shows and protects | |
| CN201527942U (en) | Emergency opening circuit breaker | |
| CN206060169U (en) | Lighning proof type residual current action breaker | |
| CN205351582U (en) | Automatic dehumidifier | |
| CN2354235Y (en) | Leakage breaker | |
| CN200979863Y (en) | A leakage protection switch | |
| CN205810732U (en) | A kind of cut-offing protecting switch | |
| CN213546223U (en) | Novel temperature acquisition structure's wisdom circuit breaker | |
| CN113916399B (en) | Overheat pre-warning device for wiring terminal | |
| CN115732280B (en) | Temporary power failure alarm system for construction site |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 130000 room 1303, unit 3, building 12, phase II, Mengyuan community, Changjiang West Road, Shushan District, Hefei City, Anhui Province Applicant after: Liang Genru Address before: 237000 Zhengyang District, Jin'an District, Lu'an City, Anhui Province, 17 buildings 705 Applicant before: Liang Genru |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210219 Address after: Room 702, No.1, Lane 2277, Zuchongzhi Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 200120 Applicant after: Shenzhou technology testing (Shanghai) Electronic Technology Co.,Ltd. Address before: 230000 room 1303, unit 3, building 12, phase II, Mengyuan community, Changjiang West Road, Shushan District, Hefei City, Anhui Province Applicant before: Liang Genru |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |