CN112510662B - Switch type surge protector - Google Patents
Switch type surge protector Download PDFInfo
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- CN112510662B CN112510662B CN202011178787.2A CN202011178787A CN112510662B CN 112510662 B CN112510662 B CN 112510662B CN 202011178787 A CN202011178787 A CN 202011178787A CN 112510662 B CN112510662 B CN 112510662B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a switch type surge protector, which comprises a protector shell, wherein a hot melting action assembly, a piezoresistor (2) and a resistor support (3) for fixing the piezoresistor (2) are arranged in the protector shell, and the piezoresistor (2) is fixed in the protector shell through the resistor support (3); the lower end of the piezoresistor (2) is provided with two protector terminals (4), and two sides of the piezoresistor (2) are respectively provided with a conducting strip (5); the hot melt action assembly comprises a fixed iron core (6) and a coil winding (7), wherein the fixed iron core (6) is fixed on the inner wall of the protector shell, the coil winding (7) is wound outside the fixed iron core (6), and one end of the coil winding (7) is electrically connected with one of the protector terminals (4) of the piezoresistor (2). The beneficial effects are as follows: the grounding reliability of the surge protector is guaranteed, and looseness caused by connection between the grounding wire and the wiring end of the surge protector after pulling is prevented.
Description
Technical Field
The invention relates to a switch type surge protector, and belongs to the field of electrical equipment.
Background
The surge current is a peak current or an overload current which is generated at the moment of power-on or under the condition of circuit abnormity and is far larger than a steady-state current. The damage of the surge caused by the lightning stroke is the largest, and dangerous overvoltage can be generated within the range of 1.5-2 KM by taking the lightning stroke as the center when the lightning stroke discharges. The surge caused by lightning stroke is characterized by single-phase pulse type and huge energy. The voltage of the external surge can rise rapidly from a few hundred volts to 20000V in a few microseconds and can travel a considerable distance. According to ANSI/IEEE C62.41-1991, the instantaneous surge voltage can reach 20000V, and the instantaneous current can reach 10000A. According to statistics, the surge outside the system is mainly from the impact of lightning and other systems, accounting for about 20%.
A surge protector, also called a lightning protector, is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines. When spike current or voltage is suddenly generated in an electric loop or a communication line due to external interference, the surge protector can conduct and shunt in a very short time, so that damage of a surge to other equipment in the loop is avoided.
The current can be led into a grounding end by tripping action when the current flows through the existing surge protector, the current is prevented from entering a protected circuit by a grounding discharge mode, and the reliable grounding of the surge protector is an important step for installing the surge protector. When current surge protector's earth connection circuit wiring, generally compress tightly the tip of earth connection on surge protector's the electrical connection terminal that rises through bolt or nut, when examining or maintaining the circuit, the wiring of circuit is torn out from the bunch wire casing, and surge protector's earth connection is pulled easily this moment for surge protector's earth connection is connected with surge protector's wiring end and is become flexible, causes ground contact failure easily, can not discharge overcurrent ground connection.
Disclosure of Invention
The invention aims to solve the technical problems that when a circuit is checked or maintained, the wiring of the circuit is pulled out of a wire bundling wire slot, the grounding wire of a surge protector is easy to pull, so that the grounding wire of the surge protector is connected with the wiring terminal of the surge protector in a loose manner, poor grounding contact is easy to cause, over-current grounding cannot be discharged, and the problem that the connection between the grounding wire and the wiring terminal of the surge protector is loosened after being pulled is solved.
The invention is realized by the following technical scheme:
a switch type surge protector comprises a protector shell, wherein a hot melting action assembly, a piezoresistor and a resistor support for fixing the piezoresistor are arranged in the protector shell, and the piezoresistor is fixed in the protector shell through the resistor support; the lower end of the piezoresistor is provided with two protector terminals, and two sides of the piezoresistor are respectively provided with a conducting strip; the hot melting action assembly comprises a fixed iron core and a coil winding, the fixed iron core is fixed on the inner wall of the protector shell, the coil winding is wound outside the fixed iron core, one end of the coil winding is electrically connected with one of the protector terminals of the piezoresistor, and the other end of the coil winding is electrically connected with one of the conducting strips on the piezoresistor; the movable iron core is fixedly arranged on the fixed iron core, one end of the movable iron core is fixedly connected with the end part of the fixed iron core through low-melting-point welding tin, the other end of the movable iron core is fixedly connected with a movable contact, and the movable contact and the movable iron core are insulated; an action spring is sleeved on the movable iron core, one end of the action spring is contacted with the end part of the fixed iron core, and the other end of the action spring is contacted with the movable contact; the movable contact is electrically connected with the coil winding through one conducting strip; one side surface of the protector shell is provided with a clamping groove used for clamping an electric box guide rail, the clamping groove is U-shaped, two U-shaped side surfaces of the clamping groove are respectively provided with a group of power connection clamping jaws, two internal grounding pieces are arranged in the protector shell, the two internal grounding pieces are respectively and electrically connected with the two groups of power connection clamping jaws, and the internal grounding pieces are matched with the movable contacts; the power connection clamping jaw comprises a sliding head, a sliding rod and a bent metal sheet, and the bent metal sheet is wrapped and attached to the end surface of the sliding head; a through groove is respectively arranged on two U-shaped side surfaces of the clamping groove, one end of the through groove, which is positioned in the protector shell, is closed, and one end of the through groove, which is positioned on the U-shaped side surface of the clamping groove, is opened; the sliding rod is arranged in the through groove, one end of the sliding rod penetrates through the closed end of the through groove and is in sliding connection with the closed end of the through groove, the other end of the sliding rod is fixedly connected with the sliding head, one end of the sliding rod, which penetrates through the closed end of the through groove, is in threaded connection with a nut, and the nut is in contact with the surface of one end, facing the inside of the protector shell, of the closed end of the through groove; the sliding head slides in the through groove, and the end part of the sliding head, which is wrapped with the bent metal sheet, protrudes out of the end opening of the through groove; a compression spring is arranged in the through groove, one end of the compression spring is in pressing contact with the sliding head, and the other end of the compression spring is in pressing contact with the closed end of the through groove; the internal grounding sheet is electrically connected with the bent metal sheet.
According to the switch type surge protector, the surge protector is fixed on the metal clamping rail in the electric box by the two power connection clamping jaws, and the metal clamping rail in the electric box is a reliable grounding part, so that the power connection clamping jaws are reliably grounded after being contacted with the clamping rail in the electric box. When the surge appears, the current borne by the coil winding on the fixed iron core is suddenly increased, and the high heat generated on the coil winding and the fixed iron core melts the soldering tin between the fixed iron core and the movable iron core, so that the movable iron core and the fixed iron core are separated from each other and fixed. The movable iron core moves towards the inner grounding piece under the action of the action spring, so that the movable contact at the end part of the movable iron core is contacted with and conducted with the inner grounding piece. At this time, the protector terminal, the coil winding, the conductive sheet, the movable contact, the internal grounding piece, and the power connection claw form a loop, and a line connected to the protector terminal is grounded through the loop, so that a surge current can be discharged through grounding in a surge to protect the circuit.
The bent metal sheet on the sliding head is electrically connected with the internal grounding sheet. When installation surge protector, when blocking the slip head on the card rail, the edge extrusion two slip heads of card rail make two slip heads to leading to the inslot and slide, cross the edge back of card rail at two slip heads, compression spring promotes two slip heads and outwards stretches out, blocks the rail card in the draw-in groove, and the installation of accomplishing surge protector is fixed. The bent metal sheet on the sliding head is in surface contact with the clamping rail, so that the internal grounding sheet is electrically connected with the clamping rail. Even surge protector moves on the card rail like this, the bent sheetmetal on the slider also can contact with the card rail, does not influence surge protector's ground connection.
Preferably, in the switch-type surge protector, the protector shell is formed by fixedly butting two half shells, two internal partition pieces are arranged in the protector shell, the two internal partition pieces are arranged in parallel at intervals, and two sides of each internal partition piece are respectively and fixedly connected with the two half shells; the two internal partition pieces divide the interior of the protector shell into three internal cavities; two groups of hot melting action assemblies are arranged in the protector shell, the two groups of hot melting action assemblies are respectively arranged on two sides of the piezoresistor, and the piezoresistor and the two groups of hot melting action assemblies are respectively arranged in the three internal cavities; the conducting strips on the two sides of the piezoresistor respectively penetrate through the two internal partition pieces.
According to the switch type surge protector, the two internal partition pieces divide the interior of the protector shell into three internal cavities, so that two groups of hot melting action assemblies and one piezoresistor which are positioned in the three internal cavities are separated, the mutual influence between the two groups of hot melting action assemblies and the piezoresistor is reduced, the two internal partition pieces can support the protector shell, and the compressive strength of the protector shell is improved.
Preferably, in the switching surge protector, an internal sliding groove is formed in the fixed iron core, the internal sliding groove is formed along the length extension direction of the fixed iron core, and an end opening of the internal sliding groove is formed in the end surface of the fixed iron core; one end of the movable iron core is inserted in the inner sliding groove and is in sliding connection with the inner sliding groove, and the low-melting-point welding tin between the movable iron core and the fixed iron core fills the end opening of the inner sliding groove and fixedly connects the movable iron core and the fixed iron core.
According to the switch type surge protector, the movable iron core is inserted into the inner sliding groove of the fixed iron core, the sliding direction of the movable iron core is limited through the inner sliding groove, and the movable contact at the end part of the movable iron core can be reliably contacted with the inner grounding piece after the movable iron core moves, so that the deviation is prevented. The movable iron core is guided by the sliding groove in the fixed iron core, so that the occupation of the internal space of the surge protector can be reduced, the appearance of the surge protector can be smaller, and the design is more compact.
Optimized, above-mentioned switch type surge protector, inside grounding piece laminate on logical surface that groove is located the protector shell and with lead to groove sliding contact, be provided with a connecting bolt on the inside grounding piece, lead to the groove and be provided with a bar groove, connecting bolt passes the bar groove and slides in the bar inslot, connecting bolt and inside grounding piece, the sheetmetal of bending, slip head threaded connection.
According to the switch type surge protector, the internal grounding piece is electrically connected with the bent metal sheet through the connecting bolt, and when the sliding head is extruded to move and the sliding head is reset, the connecting bolt slides in the strip-shaped groove and drives the internal grounding piece to move, so that the internal grounding piece and the bent metal sheet can be reliably electrically connected.
Preferably, in the switching type surge protector, the internal grounding piece is connected with an auxiliary contact of a metal sheet, the auxiliary contact and the internal grounding piece are arranged in parallel at intervals, a plurality of arc-shaped bent connecting pieces are arranged on the side portions of the auxiliary contact, the bent connecting pieces are formed by bending the side portions of the auxiliary contact, and the end portions of the bent connecting pieces are fixedly welded with the internal grounding piece; be provided with a plurality of auxiliary contacts between auxiliary contact and the inside grounding piece, auxiliary contact is passed and auxiliary contact sliding connection is with auxiliary contact to auxiliary contact's one end, and the other end of auxiliary contact has cup jointed the spring, and the both ends of spring and auxiliary contact, inside grounding piece contact, and auxiliary contact's middle section is provided with protruding ring and protruding ring sets up between auxiliary contact and inside grounding piece.
According to the switch type surge protector, in the process that the movable contact is contacted with the internal grounding sheet, the movable contact is firstly contacted with the auxiliary contact on the auxiliary contact, the auxiliary contact is extruded by the movable contact and enables the spring to be compressed, and the auxiliary contact is in pressing contact with the movable contact under the extrusion of the elastic restoring force of the spring, so that poor contact between the auxiliary contact and the movable contact is prevented. After the auxiliary contact contacts with the movable contact, the auxiliary contact, the spring and the internal grounding sheet form a grounding loop.
Preferably, in the switch type surge protector, the internal grounding sheet is provided with a fixed connecting sheet, and the end part of the fixed connecting sheet is welded and fixed with the middle section of the internal grounding sheet; the sliding rod penetrates through the fixed connecting sheet, nuts are arranged on two sides of the fixed connecting sheet respectively, and the nuts on two sides of the fixed connecting sheet are in threaded connection with the sliding rod.
The switch type surge protector of the invention uses the fixed connecting sheet to connect the internal grounding sheet with the sliding rod. When the sliding head moves, the sliding rod is pushed to move, so that the internal grounding piece is driven to move through the fixed connecting sheet, the movement of the internal grounding piece is not only driven by the connecting bolt, the stress of the joint between the connecting bolt and the internal grounding piece can be reduced, and the looseness of threaded connection between the connecting bolt and the internal grounding piece caused by overlarge stress is prevented.
Preferably, in the switching surge protector, the opposite side walls of the protector shell are respectively provided with a threaded cylinder, a compression bolt is arranged in the threaded cylinder, and the compression bolt is inserted into the threaded cylinder and is in threaded connection with the threaded cylinder; one end of the sliding rod, far away from the sliding head, is inserted into the threaded cylinder and is in sliding connection with the threaded cylinder, and the end part of the pressing bolt is in contact with one end of the sliding rod, far away from the sliding head.
The invention relates to a switch type surge protector, wherein a thread cylinder limits the sliding direction of the end part of a sliding rod, and further limits the sliding direction of a sliding head. After the surge protector is installed on the clamping rail, the pressing bolt end part is in contact with the sliding rod through rotating the pressing bolt, so that the sliding rod can be limited to move, the sliding head is limited to move, the position of the sliding head is fixed, and the bending metal sheet on the surface of the sliding head can be ensured to be in contact with the clamping rail stably.
Preferably, in the switch type surge protector, a top plate is arranged in the clamping groove, the top plate and the U-shaped bottom end surface of the clamping groove are arranged in parallel at intervals, a plurality of top plate springs are arranged between the top plate and the U-shaped bottom end surface of the clamping groove, and two ends of each top plate spring are respectively and fixedly connected with the top plate and the U-shaped bottom end surface of the clamping groove; the two ends of the top plate are in sliding contact with the two U-shaped side surfaces of the clamping groove respectively, and the top plate is in contact with the electric connection clamping jaws on the two U-shaped side surfaces of the clamping groove.
According to the switch type surge protector, the top plate and the two power connection clamping jaws are respectively contacted and extrude the inner side and the outer side of the clamping rail, the contact pressure between the power connection clamping jaws and the clamping rail is increased through extrusion, the contact stability between the power connection clamping jaws and the clamping rail is improved, and therefore the stability of electric connection between the power connection clamping jaws and the clamping rail is guaranteed.
Preferably, in the switching surge protector, the movable contact is a metal wafer, and the surface of the movable contact facing the internal grounding piece is an arc-shaped copper contact surface.
According to the switch type surge protector, the surface of the movable contact, which faces towards the internal grounding piece, is provided with the arc-shaped copper contact surface, so that the movable contact can be reliably contacted with the internal grounding piece.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of the internal structure of the present application;
FIG. 2 is a schematic structural view of a half shell of the present application;
fig. 3 is an enlarged schematic view of a portion a of fig. 1.
Reference numbers and corresponding part names in the drawings:
1-half shell, 2-varistor, 3-resistance support, 4-protector terminal, 5-conducting strip, 6-stationary core, 7-coil winding, 8-movable core, 9-movable contact, 10-action spring, 11-card slot, 12-slider, 13-internal grounding strip, 14-internal partition strip, 15-internal sliding slot, 16-slider, 17-bent metal strip, 18-through slot, 19-compression spring, 20-connecting bolt, 21-strip slot, 22-auxiliary contact, 23-bent connecting piece, 24-auxiliary contact, 25-fixed connecting piece, 26-threaded cylinder, 27-compression bolt, 28-top plate and 29-top plate spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.
Examples
As shown in fig. 1 to 3, the switching surge protector of the present invention includes a protector housing, a thermal melting action assembly, a varistor 2 and a resistor support 3 for fixing the varistor 2 are disposed in the protector housing, and the varistor 2 is fixed in the protector housing through the resistor support 3; the lower end of the piezoresistor 2 is provided with two protector terminals 4, and two sides of the piezoresistor 2 are respectively provided with a conducting strip 5; the hot melting action assembly comprises a fixed iron core 6 and a coil winding 7, the fixed iron core 6 is fixed on the inner wall of the protector shell, the coil winding 7 is wound outside the fixed iron core 6, one end of the coil winding 7 is electrically connected with one of the protector terminals 4 of the piezoresistor 2, and the other end of the coil winding 7 is electrically connected with one of the conducting strips 5 on the piezoresistor 2; a movable iron core 8 is fixedly arranged on the fixed iron core 6, one end of the movable iron core 8 is fixedly connected with the end part of the fixed iron core 6 through a low-melting-point welding tin, the other end of the movable iron core 8 is fixedly connected with a movable contact 9, and the movable contact 9 is insulated from the movable iron core 8; an action spring 10 is sleeved on the movable iron core 8, one end of the action spring 10 is contacted with the end part of the fixed iron core 6, and the other end of the action spring 10 is contacted with the movable contact 9; the movable contact 9 is electrically connected with the coil winding 7 through one of the conducting strips 5; one of them side surface of protector shell is provided with a draw-in groove 11 that is used for joint electronic box guide rail, and draw-in groove 11 is the U type, is provided with a set of electric claw that connects on two U type side surfaces of draw-in groove 11 respectively, is provided with two inside grounding lugs 13 in the protector shell, and two inside grounding lugs 13 with connect the electric claw electricity with two sets of electricity respectively and be connected, inside grounding lug 13 sets up with movable contact 9 cooperation.
The protector shell is formed by fixedly butting two half shells 1, two internal partition pieces 14 are arranged in the protector shell, the two internal partition pieces 14 are arranged in parallel at intervals, and two sides of each internal partition piece 14 are fixedly connected with the two half shells 1 respectively; the two internal partition sheets 14 divide the interior of the protector housing into three internal cavities; two groups of hot melting action assemblies are arranged in the protector shell, the two groups of hot melting action assemblies are respectively arranged on two sides of the piezoresistor 2, and the piezoresistor 2 and the two groups of hot melting action assemblies are respectively arranged in the three internal cavities; the conducting strips 5 on both sides of the varistor 2 pass through the two internal partition strips 14.
An internal sliding groove 15 is formed in the fixed iron core 6, the internal sliding groove 15 is arranged along the length extending direction of the fixed iron core 6, and an end opening of the internal sliding groove 15 is arranged on the end surface of the fixed iron core 6; one end of the movable iron core 8 is inserted into the inner sliding groove 15 and is in sliding connection with the inner sliding groove 15, and the low-melting-point soldering tin between the movable iron core 8 and the fixed iron core 6 fills the end opening of the inner sliding groove 15 and fixedly connects the movable iron core 8 and the fixed iron core 6.
The power connection clamping jaw comprises a sliding head 12, a sliding rod 16 and a bent metal sheet 17, and the bent metal sheet 17 is wrapped and attached to the end surface of the sliding head 12; two U-shaped side surfaces of the clamping groove 11 are respectively provided with a through groove 18, one end of the through groove 18 positioned in the protector shell is closed, and one end of the through groove 18 positioned on the U-shaped side surface of the clamping groove 11 is opened; the sliding rod 16 is arranged in the through groove 18, one end of the sliding rod 16 penetrates through the closed end of the through groove 18 and is in sliding connection with the closed end of the through groove 18, the other end of the sliding rod 16 is fixedly connected with the sliding head 12, one end of the sliding rod 16 penetrating through the closed end of the through groove 18 is in threaded connection with a nut, and the nut is in contact with the surface of one end, facing the inside of the protector shell, of the closed end of the through groove 18; the sliding head 12 slides in the through groove 18, and the end part of the sliding head 12, which is wrapped by the bent metal sheet 17, protrudes out of the end part opening of the through groove 18; a compression spring 19 is arranged in the through groove 18, one end of the compression spring 19 is in pressing contact with the sliding head 12, and the other end of the compression spring 19 is in pressing contact with the closed end of the through groove 18; the internal ground tab 13 is electrically connected to the bent metal tab 17.
Inside grounding piece 13 laminate on leading to groove 18 and lie in the surface of protector shell and with lead to groove 18 sliding contact, be provided with a connecting bolt 20 on inside grounding piece 13, lead to and be provided with a bar groove 21 on the groove 18, connecting bolt 20 passes bar groove 21 and slides in bar groove 21, connecting bolt 20 and inside grounding piece 13, bent sheetmetal 17, the 12 threaded connection of slip head.
The internal grounding piece 13 is connected with an auxiliary contact 22 made of a metal sheet, the auxiliary contact 22 and the internal grounding piece 13 are arranged in parallel at intervals, a plurality of arc-shaped bent connecting pieces 23 are arranged on the side portions of the auxiliary contact 22, the bent connecting pieces 23 are formed by bending the side portions of the auxiliary contact 22, and the end portions of the bent connecting pieces 23 are fixedly welded with the internal grounding piece 13; a plurality of auxiliary contacts 24 are arranged between the auxiliary contact 22 and the internal grounding plate 13, one end of each auxiliary contact 24 penetrates through the auxiliary contact 22 and is in sliding connection with the auxiliary contact 22, the other end of each auxiliary contact 24 is sleeved with a spring, two ends of each spring are in contact with the auxiliary contact 22 and the internal grounding plate 13, a bulge ring is arranged in the middle section of each auxiliary contact 24, and the bulge ring is arranged between the auxiliary contact 22 and the internal grounding plate 13.
A fixed connecting sheet 25 is arranged on the internal grounding sheet 13, and the end part of the fixed connecting sheet 25 is welded and fixed with the middle section of the internal grounding sheet 13; the sliding rod 16 penetrates through the fixed connecting sheet 25, nuts are respectively arranged on two sides of the fixed connecting sheet 25, and the nuts on two sides of the fixed connecting sheet 25 are in threaded connection with the sliding rod 16.
The opposite side walls of the protector shell are respectively provided with a threaded cylinder 26, a compression bolt 27 is arranged in the threaded cylinder 26, and the compression bolt 27 is inserted in the threaded cylinder 26 and is in threaded connection with the threaded cylinder 26; the end of the sliding rod 16 far away from the sliding head 12 is inserted into the threaded cylinder 26 and is slidably connected with the threaded cylinder 26, and the end of the pressing bolt 27 is in contact with the end of the sliding rod 16 far away from the sliding head 12.
A top plate 28 is arranged in the clamping groove 11, the top plate 28 and the U-shaped bottom end face of the clamping groove 11 are arranged in parallel at intervals, a plurality of top plate springs 29 are arranged between the top plate 28 and the U-shaped bottom end face of the clamping groove 11, and two ends of each top plate spring 29 are fixedly connected with the top plate 28 and the U-shaped bottom end face of the clamping groove 11 respectively; the two ends of the top plate 28 are in sliding contact with the two U-shaped side surfaces of the card slot 11, respectively, and the top plate 28 is in contact with the electric connection claws on the two U-shaped side surfaces of the card slot 11.
The movable contact 9 is a metal wafer, and the surface of the movable contact 9 facing the internal grounding sheet 13 is an arc-shaped copper contact surface.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A switching surge protector, characterized in that: the protector comprises a protector shell, wherein a hot-melting action assembly, a piezoresistor (2) and a resistor support (3) for fixing the piezoresistor (2) are arranged in the protector shell, and the piezoresistor (2) is fixed in the protector shell through the resistor support (3); the lower end of the piezoresistor (2) is provided with two protector terminals (4), and two sides of the piezoresistor (2) are respectively provided with a conducting strip (5); the hot melting action assembly comprises a fixed iron core (6) and a coil winding (7), the fixed iron core (6) is fixed on the inner wall of the protector shell, the coil winding (7) is wound outside the fixed iron core (6), one end of the coil winding (7) is electrically connected with one of the protector terminals (4) of the piezoresistor (2), and the other end of the coil winding (7) is electrically connected with one of the conducting strips (5) on the piezoresistor (2); a movable iron core (8) is fixedly arranged on the fixed iron core (6), one end of the movable iron core (8) is fixedly connected with the end part of the fixed iron core (6) through a low-melting-point welding tin, the other end of the movable iron core (8) is fixedly connected with a movable contact (9), and the movable contact (9) is insulated from the movable iron core (8); an action spring (10) is sleeved on the movable iron core (8), one end of the action spring (10) is contacted with the end part of the fixed iron core (6), and the other end of the action spring (10) is contacted with the movable contact (9); the movable contact (9) is electrically connected with the coil winding (7) through one conducting strip (5); a clamping groove (11) used for clamping an electric box guide rail is formed in one side surface of the protector shell, the clamping groove (11) is U-shaped, a group of power connection clamping jaws are respectively arranged on two U-shaped side surfaces of the clamping groove (11), two internal grounding pieces (13) are arranged in the protector shell, the two internal grounding pieces (13) are respectively and electrically connected with the two groups of power connection clamping jaws, and the internal grounding pieces (13) are matched with the movable contact (9); the power connection clamping jaw comprises a sliding head (12), a sliding rod (16) and a bent metal sheet (17), and the bent metal sheet (17) wraps and is attached to the end surface of the sliding head (12); two U-shaped side surfaces of the clamping groove (11) are respectively provided with a through groove (18), one end of the through groove (18) positioned in the protector shell is closed, and one end of the through groove (18) positioned on the U-shaped side surface of the clamping groove (11) is opened; the sliding rod (16) is arranged in the through groove (18), one end of the sliding rod (16) penetrates through the closed end of the through groove (18) and is in sliding connection with the closed end of the through groove (18), the other end of the sliding rod (16) is fixedly connected with the sliding head (12), one end of the sliding rod (16) penetrating through the closed end of the through groove (18) is in threaded connection with a nut, and the nut is in surface contact with one end, facing the inside of the protector shell, of the closed end of the through groove (18); the sliding head (12) slides in the through groove (18), and the end part of the sliding head (12) wrapped with the bent metal sheet (17) protrudes out of the end part opening of the through groove (18); a compression spring (19) is arranged in the through groove (18), one end of the compression spring (19) is in pressing contact with the sliding head (12), and the other end of the compression spring (19) is in pressing contact with the closed end of the through groove (18); the internal grounding sheet (13) is electrically connected with the bent metal sheet (17).
2. A switching surge protector according to claim 1, characterized in that: the protector shell is formed by fixedly butting two half shells (1), two internal partition sheets (14) are arranged in the protector shell, the two internal partition sheets (14) are arranged in parallel at intervals, and two sides of each internal partition sheet (14) are fixedly connected with the two half shells (1) respectively; the two internal partition sheets (14) divide the interior of the protector shell into three internal cavities; two groups of hot melting action assemblies are arranged in the protector shell, the two groups of hot melting action assemblies are respectively arranged on two sides of the piezoresistor (2), and the piezoresistor (2) and the two groups of hot melting action assemblies are respectively arranged in the three internal cavities; the conducting strips (5) on the two sides of the piezoresistor (2) respectively penetrate through the two internal partition sheets (14).
3. A switching surge protector according to claim 1, characterized in that: an internal sliding groove (15) is formed in the fixed iron core (6), the internal sliding groove (15) is arranged along the length extending direction of the fixed iron core (6), and an end opening of the internal sliding groove (15) is arranged on the end surface of the fixed iron core (6); one end of the movable iron core (8) is inserted into the inner sliding groove (15) and is in sliding connection with the inner sliding groove (15), and low-melting-point welding tin between the movable iron core (8) and the fixed iron core (6) fills an end opening of the inner sliding groove (15) and fixedly connects the movable iron core (8) and the fixed iron core (6).
4. A switching surge protector according to claim 1, characterized in that: inside ground lug (13) laminate on leading to surface that lies in the protector shell on groove (18) and with lead to groove (18) sliding contact, be provided with one connecting bolt (20) on inside ground lug (13), lead to and be provided with one bar groove (21) on groove (18), connecting bolt (20) pass bar groove (21) and slide in bar groove (21), connecting bolt (20) and inside ground lug (13), bend sheetmetal (17), slip head (12) threaded connection.
5. A switching surge protector according to claim 1, characterized in that: the internal grounding piece (13) is connected with an auxiliary contact (22) of a metal sheet, the auxiliary contact (22) and the internal grounding piece (13) are arranged in parallel at intervals, a plurality of arc-shaped bent connecting pieces (23) are arranged on the side portion of the auxiliary contact (22), the bent connecting pieces (23) are formed by bending the side portion of the auxiliary contact (22), and the end portion of each bent connecting piece (23) is fixedly welded with the internal grounding piece (13); be provided with a plurality of auxiliary contact (24) between auxiliary contact (22) and inside ground lug (13), auxiliary contact (22) are passed to the one end of auxiliary contact (24) and with auxiliary contact (22) sliding connection, the other end of auxiliary contact (24) has cup jointed the spring, the both ends and auxiliary contact (22), inside ground lug (13) contact of spring, the middle section of auxiliary contact (24) is provided with protruding ring and protruding ring sets up between auxiliary contact (22) and inside ground lug (13).
6. A switching surge protector according to claim 1, characterized in that: a fixed connecting sheet (25) is arranged on the internal grounding sheet (13), and the end part of the fixed connecting sheet (25) is welded and fixed with the middle section of the internal grounding sheet (13); the sliding rod (16) penetrates through the fixed connecting piece (25), nuts are arranged on two sides of the fixed connecting piece (25) respectively, and the nuts on two sides of the fixed connecting piece (25) are in threaded connection with the sliding rod (16).
7. A switching surge protector according to claim 1, characterized in that: the opposite side walls of the protector shell are respectively provided with a threaded cylinder (26), a compression bolt (27) is arranged in the threaded cylinder (26), and the compression bolt (27) is inserted in the threaded cylinder (26) and is in threaded connection with the threaded cylinder (26); one end of the sliding rod (16) far away from the sliding head (12) is inserted into the threaded cylinder (26) and is in sliding connection with the threaded cylinder (26), and the end part of the pressing bolt (27) is in contact with one end of the sliding rod (16) far away from the sliding head (12).
8. The switching surge protector of claim 7, wherein: a top plate (28) is arranged in the clamping groove (11), the top plate (28) and the U-shaped bottom end face of the clamping groove (11) are arranged in parallel at intervals, a plurality of top plate springs (29) are arranged between the top plate (28) and the U-shaped bottom end face of the clamping groove (11), and two ends of each top plate spring (29) are fixedly connected with the top plate (28) and the U-shaped bottom end face of the clamping groove (11) respectively; the two ends of the top plate (28) are in sliding contact with the two U-shaped side surfaces of the clamping groove (11) respectively, and the top plate (28) is in contact with the electric connection clamping jaws on the two U-shaped side surfaces of the clamping groove (11).
9. A switching surge protector according to claim 1, characterized in that: the movable contact (9) is a metal wafer, and the surface of the movable contact (9) facing the internal grounding sheet (13) is an arc-shaped copper contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011178787.2A CN112510662B (en) | 2020-10-29 | 2020-10-29 | Switch type surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011178787.2A CN112510662B (en) | 2020-10-29 | 2020-10-29 | Switch type surge protector |
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| Publication Number | Publication Date |
|---|---|
| CN112510662A CN112510662A (en) | 2021-03-16 |
| CN112510662B true CN112510662B (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011178787.2A Active CN112510662B (en) | 2020-10-29 | 2020-10-29 | Switch type surge protector |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990687A (en) * | 2021-10-27 | 2022-01-28 | 杭州易造科技有限公司 | Surge backup protection device and limiting device for surge protection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209642309U (en) * | 2019-05-16 | 2019-11-15 | 李永清 | A kind of Surge Protector of anti-pull open circuit |
| CN111431157A (en) * | 2020-04-14 | 2020-07-17 | 谭孟艮 | Surge protector |
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2020
- 2020-10-29 CN CN202011178787.2A patent/CN112510662B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209642309U (en) * | 2019-05-16 | 2019-11-15 | 李永清 | A kind of Surge Protector of anti-pull open circuit |
| CN111431157A (en) * | 2020-04-14 | 2020-07-17 | 谭孟艮 | Surge protector |
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| CN112510662A (en) | 2021-03-16 |
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