CN214479565U - Failure breaking indicating assembly of signal surge protector - Google Patents

Abstract

The utility model discloses a disconnected subassembly that instructs of signal surge protector's inefficacy section, including fuse and state indication subassembly, the fuse be used for concatenating with signal surge protector's surge protection subassembly, the fuse break off when through-flow surge exceedes predetermined impulse value, the state indication subassembly include elastic component and the indicator that is used for showing the state, the fuse play spacing effect when not breaking off to the elastic component and be in the energy storage state to elastic component release energy storage is in order to drive the indicator displacement and then show different states after the fuse disconnection. Signal surge protector's inefficacy divides disconnected instruction subassembly can make things convenient for audio-visual real-time supervision signal surge protector's state, in time show signal surge protector for the inefficacy after the fuse disconnection, be convenient for timely maintenance change.

Description

Failure breaking indicating assembly of signal surge protector

Technical Field

The utility model relates to an electrical protection spare technical field especially relates to a signal surge protector's disconnected subassembly that instructs of inefficacy section.

Background

A surge protector is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines. The signal surge protector is a type of surge protector, and is generally applied to an industrial control system, a network audio communication system, a security monitoring system, a fire alarm system, an attendance system and the like. The surge protector who uses in electrical power generating system is provided with tripping device usually, utilize tripping device to break off when passing through too big electric current and form and open a way, thereby avoid the components and parts in the surge protector to last through too big electric current and damage, traditional tripping device adopts low temperature solder to weld the pin that forms low temperature dropout solder joint with piezo-resistor usually, when surge protector lasts through too big electric current, piezo-resistor generates heat to the low temperature solder that the uniform temperature leads to low temperature dropout solder joint and melts, thereby break away from the shell fragment and form and open a way with piezo-resistor's pin disconnection under self elasticity effect, the through-flow of intercepting electric current, and then avoid the components and parts in the surge protector because last through too big electric current and impaired, effectively protect the components and parts in the surge protector, reduce and maintain the replacement cost. However, the tripping mechanism of the surge protector in the conventional power supply system cannot be applied to the signal surge protector, because the conventional tripping mechanism melts the low-temperature solder by utilizing the heating and temperature rise of the piezoresistor during the excessive current, the response speed is slow, the surge current in the signal circuit is much smaller than the surge current in the power supply system, and the piezoresistor cannot be heated to reach the temperature for melting the low-temperature solder, so that the piezoresistor cannot reach an open circuit state to protect each component in the signal surge protector, the open circuit state is difficult to be timely disconnected, the normal transmission protectiveness of signals is poor, and the maintenance and replacement cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve and the technical task who provides improve prior art, provide a signal surge protector's inefficacy divides disconnected instruction subassembly, solve among the prior art power surge protector's tripping device and be difficult to use signal surge protector, be difficult to timely disconnection formation open circuit state, relatively poor to the normal transmission protectiveness of signal, maintain the problem that the change cost is high.

For solving the above technical problem, the technical scheme of the utility model is that:

a failure breaking indication assembly of a signal surge protector comprises a fuse wire and a state indication assembly, wherein the fuse wire is used for being connected in series with a surge protection assembly of the signal surge protector, the fuse wire is broken when the through-flow surge exceeds a preset impact value, the state indication assembly comprises an elastic piece and an indication piece used for displaying the state, the fuse wire plays a limiting role on the elastic piece when not broken so as to enable the elastic piece to be in an energy storage state, and the elastic piece releases energy storage after the fuse wire is broken so as to drive the indication piece to displace and further display different states.

Signal surge protector's disconnected indication subassembly of inefficacy make signal surge protector's failure mode for open circuit state, the fuse wire can break off in the twinkling of an eye and make the circuit break form open circuit state when encountering too big surge, can be timely react to too big surge, improve anti-surge's ability, can avoid signal surge protector's surge protection subassembly to last to burn out through too big electric current, reduce and maintain the replacement cost. The fuse wire adopted by the utility model is different from the traditional temperature fuse wire which is simply fused by the heat effect, the temperature of the traditional temperature fuse wire can rise when the traditional temperature fuse wire passes through the overlarge current, the temperature fuse wire reaches the melting state after the traditional temperature fuse wire passes through the overlarge current for a certain time continuously, and then the traditional temperature fuse wire is disconnected, the traditional temperature fuse wire needs to pass through the overlarge current for a certain time, the response speed is slow, and the device of the load or the surge protector can be damaged in the period of passing the overlarge current continuously, but the fuse wire adopted by the failure breaking indicating component of the signal surge protector of the utility model is that the fuse wire is broken by the common action of the mechanical effect and the heat effect generated by the surge of the fuse wire on the fuse wire, the response speed is high, the fuse wire can be broken in the moment of passing the overlarge surge, and the fuse wire is not melted and disconnected by the heat generated by the overlarge surge, the temperature rise needs certain time when the excessive surge of through-flow, just burns out the surge protection subassembly when the temperature that can appear not yet reach the temperature that makes traditional fusing subassembly disconnection, and the failure mode that can't ensure signal surge protector is open circuit state, and the protectiveness is relatively poor, maintains the high cost of changing. And signal surge protector's inefficacy divides disconnected instruction subassembly can make things convenient for audio-visual real-time supervision signal surge protector's state, in time show signal surge protector for failure state after the fuse disconnection, the spacing of fuse disconnection back elastic component is relieved to promote the state that the indicator removed and then switched display through the elastic component, reliable and accurate demonstration signal surge protector's state, the timely maintenance of being convenient for is changed.

Furthermore, the fuse wire further comprises two wiring pieces arranged at intervals, two ends of the fuse wire are respectively connected with one wiring piece, and the middle of the fuse wire plays a limiting role in limiting the elastic piece when the fuse wire is not disconnected. The structure reliability is good, and the fuse wire can be through the reliable electrical connection of wiring spare and surge protection subassembly, and the guarantee signal surge protector can reliable and stable normal work.

Furthermore, when the fuse wire is not disconnected, the fuse wire is bent under the action of the elastic element, the inductance of the bent fuse wire can be increased, the change rate of current waveform is reduced, the accumulation time of current wave energy on the fuse wire is prolonged, the fuse wire can be disconnected more reliably when surge passes through the fuse wire, and the failure mode of the signal surge protector is ensured to be in an open circuit state.

Furthermore, the fuse wire is wound and welded on the wiring piece, so that the electrical connection reliability of the fuse wire and the wiring piece is improved, the condition of poor contact is avoided, and the reliable work of the signal surge protector is ensured.

Furthermore, a groove is formed in the wiring piece, the tail end of the fuse wire is embedded into the groove and is connected with the groove in a welding mode, the groove plays a role in positioning the tail end of the fuse wire, assembling precision is improved, and welding reliability is improved.

Furthermore, the signal surge protector further comprises a main body piece, the wiring piece is fixed on the main body piece, the indicating piece is arranged on the main body piece in a sliding mode, the elastic piece is connected between the indicating piece and the main body piece, when the fuse wire is not disconnected, the fuse wire is in contact with the indicating piece to indirectly limit the elastic piece, the failure breaking indicating assembly of the signal surge protector is integrated into a whole, the fusing indicating assembly can be integrally applied to the signal surge protector, and the signal surge protector is compact in structure, easy to implement and convenient to assemble.

Furthermore, the wiring piece be provided with location portion, the cross-section of location portion be non-circular, the main part on set up with location portion matched with confession wiring piece's location portion male mounting hole for wiring piece accurate assembly to the main part on, avoid the wiring piece to take place to rotate, improve structural stability, avoid the fuse to take place to become flexible and lead to the unexpected removal of indicator and wrong demonstration signal surge protector's state.

Further, main part on the integrated voltage limiting type protection component that constitutes by voltage limiting type component, voltage limiting type protection component and fuse series connection, compact structure, integrated level are higher, can with the fusing indicate that the subassembly is whole to be used as independent lightning protection product.

Further, the voltage-limiting protection component comprises one of a transient diode and a piezoresistor or a combination thereof.

Furthermore, the main part on set up the remote signalling subassembly that is used for remote monitoring, the remote signalling subassembly by the pointer touch-control, change the touch-control state to the remote signalling subassembly when the pointer takes place the displacement, have the remote monitoring function, the long-range real-time monitoring signal surge protector's of being convenient for situation, whether the long-range definite fuse breaks off, the timely maintenance of being convenient for.

Compared with the prior art, the utility model discloses the advantage lies in:

signal surge protector's inefficacy divides disconnected instruction subassembly can make things convenient for audio-visual real-time supervision signal surge protector's state, in time show signal surge protector for failure state after the fuse disconnection, be convenient for timely maintenance change, signal surge protector's failure mode is open circuit state, the fuse wire can break off in the twinkling of an eye and form open circuit state when meeting with too big surge, can avoid voltage limiting type protection subassembly to last to burn out through too big electric current, higher reliability and security have in signal line uses.

Drawings

FIG. 1 is a schematic external structural view according to a first embodiment;

FIG. 2 is a schematic view of a fuse in cooperation with a status indicating assembly;

FIG. 3 is a schematic view of the mating structure of the indicator and the remote signaling assembly;

FIG. 4 is a schematic structural view of the wiring lug;

FIG. 5 is a schematic structural view of the indicator;

FIG. 6 is a circuit diagram according to the first embodiment;

FIG. 7 is a schematic external structural view of the second embodiment;

FIG. 8 is a schematic structural view of a voltage limiting protection assembly integrated on the main body according to the second embodiment;

fig. 9 is a circuit structure diagram of the second embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses a signal surge protector's disconnected branch of failure indicates subassembly can in time break off and form the open circuit state when encountering too big surge current, and is high, the security is good to signal circuit's protection reliability to have the state indication function, can remote monitoring, be convenient for in time maintain the change.

Example one

As shown in fig. 1 to 6, a failure breaking indication assembly of a signal surge protector mainly comprises a fuse 1 and a state indication assembly, wherein the fuse 1 is used for being connected in series with a surge protection assembly of the signal surge protector, the surge protection assembly is a protection assembly formed by a voltage limiting element, the surge protection assembly can be specifically a transient diode, the fuse 1 is broken when the through-flow surge exceeds a preset impact value, the state indication assembly comprises an elastic element 2 and an indication element 3 for displaying a state, the fuse 1 plays a limiting role on the elastic element 2 when not broken so as to enable the elastic element 2 to be in an energy storage state, and the elastic element 2 releases energy storage after the fuse 1 is broken so as to drive the indication element 3 to displace so as to display different states.

When encountering overlarge surge, the fuse wire 1 can be instantly disconnected to break the circuit to form an open circuit state, the response to the overlarge surge can be timely realized, the anti-surge capacity is improved, the surge protection assembly of the signal surge protector can be prevented from being continuously burnt through the overlarge current, and the maintenance and replacement cost is reduced. And fusing indicating component can make things convenient for audio-visual real-time supervision signal surge protector's state, in time show signal surge protector for failure state after fuse 1 breaks, the spacing of fuse 1 disconnection back elastic component 2 is relieved to promote the state that indicator 3 removed and then switch the demonstration through elastic component 2, reliable and accurate demonstration signal surge protector's state, the timely maintenance of being convenient for is changed.

The fuse wire 1 is fused at the moment of overlarge surge, can truly reflect the lightning impulse capability of the surge protector, and can be determined according to the actual required energy and the internal structure design of a product, the diameter of the fuse wire is reduced along with the increase of the voltage level of a surge protection assembly (transient diode), and when the voltage level of the transient diode is 11-33V, the diameter of the fuse wire is 0.1-0.15 mm; when the voltage level of the transient diode is 48-64V, the diameter of the fuse is 0.01-0.1 mm, and the diameter of the fuse is matched with the power and the voltage of the transient diode.

TABLE 1

As shown in table 1, which is a preset surge value (current/voltage) correspondence table of fuses corresponding to surge waveforms, in the table "1.2/50 μ s; 8/20 μ s "standard" GB _ T _18802.21-2016 Low Voltage Surge protective devices-part 21: waveform C2 required by Surge Protection Devices (SPDs) performance requirements and test methods of telecommunication and signal networks, wherein 1.2 in '1.2/50 mus' represents wave front time, unit mus, 50 represents half-peak time, unit mus, '1.2/50 mus' represents open-circuit voltage waveform, and '8/20 mus' represents short-circuit current waveform; in the table B, "8/20 mus" is the impulse current waveform required by the standard TB2311-2017 railway communication, signal and power electronic system lightning protection equipment; "10/350 μ s" in table C is standard "GB _ T _18802.21-2016 low voltage surge protector — part 21: surge Protector (SPD) performance requirements and test methods for telecommunications and signal networks "required surge waveform D1. When the surge is less than the preset impact value (current/voltage) in the list, the fuse wire is equivalent to a wire to play a role of electric conduction; when the surge is larger than or equal to the preset surge value (current/voltage) in the list, the fuse can be rapidly disconnected due to the mechanical effect and the thermal effect generated on the fuse by the surge, so that open-circuit protection is realized.

The fusing indication assembly is an integrated structure which is integrated and comprises a main body part 4 and two wire connecting parts 5 which are arranged at intervals, wherein two ends of the fuse wire 1 are respectively connected with one wire connecting part 5, the middle part of the fuse wire 1 has a limiting effect on the elastic part 2 when the fuse wire 1 is not disconnected, in particular, the wire connecting parts 5 are fixed on the main body part 4, the indicating part 3 is arranged on the main body part 4 in a sliding manner, the elastic part 2 is connected between the indicating part 3 and the main body part 4, the fuse wire 1 is directly contacted with the indicating part 3 to indirectly limit the elastic part 2 when the fuse wire 1 is not disconnected, a wire clamping part 31 which is matched with the fuse wire 1 is arranged on the indicating part 3, and the wire clamping part 31 of the indicating part 3 is abutted against the middle area of the unbroken fuse wire 1 under the action of the elastic part 2, so that the fuse wire 1 is tensioned and bent, the bending fuse 1 is bent to be in a U-shaped structure, the inductance of the bending fuse 1 can be increased, the change rate of current wave shape is reduced, the accumulation time of current wave energy on the fuse 1 is prolonged, surge can more reliably break the fuse 1 when passing through the fuse 1, in the embodiment, the elastic member 2 is a spring, two springs are arranged in parallel, the elastic direction of the spring is along the sliding direction of the indicating member 3, after the fuse 1 is broken, the elastic member 2 releases elastic potential energy to drive the indicating member 3 to slide and change positions, so that different state indications are displayed, a red label and a green label are adjacently arranged on the indicating member 3, and when the position of the indicating member 3 is changed, the red label or the green label is respectively displayed outwards, namely, different working states of the signal surge protector are displayed.

In this embodiment, the fuse wire 1 is wound around and soldered to the wiring member 5, that is, the fuse wire 1 is wound around the wiring member 5 and then soldered to the wiring member 5, and specifically, the wiring piece 5 is integrally of a columnar structure, the wiring piece 5 is sequentially provided with a welding part, a winding part and a positioning part along the length direction of the columnar structure, the fuse wire 1 is wound on the winding part and then welded on the welding part, the welding part is provided with a groove 51, the groove 51 is positioned at the end part of the wiring piece 5 with a columnar structure, so that the welding operation is convenient, the tail end of the fuse wire 1 is embedded into the groove 51 and is welded and connected, the groove 51 plays a role in positioning the tail end of the fuse wire 1, the consistency of welding and connection is ensured, meanwhile, the welding connection reliability is improved, the condition of poor contact is avoided, and the reliable normal work of a signal surge protector provided with the fusing indication assembly is ensured;

the cross-section of the positioning part of the wiring piece 5 is non-circular, and specifically can be oval or polygonal, the main body piece 4 is provided with a mounting hole matched with the positioning part and used for inserting the positioning part of the wiring piece 5, so that the wiring piece 5 can be conveniently and accurately assembled to the main body piece 4, and the wiring piece 5 is prevented from rotating, long-term stability and consistency of the tensioning state of the fuse 1 are guaranteed, the condition that the fuse 1 is paid off due to rotation of the wiring piece 5 is avoided, namely the length of the fuse 1 between the two wiring pieces 5 is lengthened, and the indicating piece 3 is further caused to shift under the action of the elastic piece 2 to indicate wrong state information.

In this embodiment, the signal surge protector failure breaking indication assembly further includes a remote signaling assembly 6 for remote monitoring, the remote signaling assembly 6 is touched by the indicating member 3, the touch state of the remote signaling assembly 6 is changed when the indicating member 3 is displaced, the remote signaling assembly 6 specifically adopts a micro switch, and the touch state of the micro switch is changed when the indicating member 3 is displaced, so that a remote signaling signal with a state change is sent outwards, and remote monitoring is facilitated. Specifically, remote signaling subassembly 6 also integrated setting on main part 4, indicator 3 on set up the linkage portion that is used for touch-control remote signaling subassembly 6, when signal surge protector is in normal condition, also when fuse 1 has not disconnected yet, the linkage portion and the micro-gap switch contact of indicator 3, after fuse 1 breaks off, indicator 3 takes place the displacement under the effect of elastic component 2, the linkage portion of indicator 3 and micro-gap switch's micro-gap shell fragment no longer contact and then make micro-gap switch take place the remote signaling signal of state change, be convenient for timely maintenance change.

The signal surge protector's disconnected subassembly of breaking of inefficacy whole be an integrated module, be convenient for wholly use in signal surge protector, main part piece 4 on be provided with shell 41 in order to cover fuse 1, wiring piece, indicator 3, elastic component 2 and remote signalling subassembly 6, improve protectiveness and external isolation, ensure that the fusing indicates the subassembly can be stable and not disturbed independent work, ensure the reliability of state indication, wiring piece, remote signalling subassembly 6 set up the leg of wearing out the main part piece, be convenient for carry out reliable and convenient electricity with fusing indication subassembly and outside and be connected.

The failure breaking indicating component of the signal surge protector can be used independently, can also be used as a secondary lightning protection component to be matched with a primary protection component, and is connected in series with the primary protection component to form a complete signal surge protector with secondary protection, indication and remote signaling functions;

when the requirement on the impact endurance capacity of the signal line is small (the maximum through-flow energy of the fusing material is less than or equal to), the assembly can be used as an independent lightning protection product, can be used as an onboard lightning protection product to be welded on a printed board needing to protect the signal line, and can be an onboard lightning protection assembly which is small in size, light in weight and has the functions of indication and remote signaling.

Example two

As shown in fig. 7 to 9, the difference from the first embodiment is that the failure breaking indication component of the signal surge protector is further provided with a voltage limiting protection component 7 formed by a voltage limiting element, the voltage limiting protection component 7 is integrated on the main body piece 4, the voltage limiting protection component is connected in series with the fuse, one pole of the voltage limiting protection component 7 is electrically connected with one of the wiring pieces 5, the other wiring piece 5 and the other pole of the voltage limiting protection component 7 extend out of the main body piece 4 to form a welding pin as a working pin of the fusing indication component, the voltage limiting protection component 7 includes one or a combination of a transient diode and a piezoresistor, and particularly, the transient diode can be used for forming, the structure is compact, and the integration level is improved.

The above are only preferred embodiments of the present invention, and it should be noted that the above preferred embodiments should not be considered as limitations of the present invention, and the scope of the present invention should be limited by the scope of the appended claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (10)

1. The utility model provides a disconnected subassembly that indicates of failure of signal surge protector, characterized by includes fuse and state indication subassembly, the fuse be used for concatenating with the surge protection subassembly of signal surge protector, the fuse break when the through-flow surge surpasss and predetermine the impulse value, state indication subassembly include elastic component and the indicator that is used for showing the state, the fuse play the spacing effect to the elastic component when not breaking so that the elastic component is in the energy storage state to the elastic component releases the energy storage after the fuse breaks and then shows different states in order to drive the indicator displacement.

2. A signal surge protector failure break indicating assembly according to claim 1, further comprising two spaced apart connection elements, one connection element being connected to each end of the fuse, the middle portion of the fuse acting as a stop for the resilient element when the fuse is not broken.

3. A failure breaking indicating assembly of a signal surge protector according to claim 2, wherein said fuse is bent by the elastic member when the fuse is not broken.

4. A failure break indicating assembly of a signal surge protector according to claim 2, wherein said fuse wire is wound and soldered to a wire connecting member.

5. A failure breaking indicating assembly of a signal surge protector according to claim 4, wherein said wiring member is formed with a groove, and the end of said fuse is inserted into the groove and soldered.

6. A signal surge protector failure breaking indicating assembly according to any of claims 2 to 5, further comprising a body member, wherein the wiring member is fixed on the body member, the indicating member is slidably disposed on the body member, the resilient member is connected between the indicating member and the body member, and the fuse contacts the indicating member when the fuse is not broken to indirectly limit the resilient member.

7. A failure breaking indication assembly of a signal surge protector according to claim 6, wherein the wiring member is provided with a positioning portion, the cross section of the positioning portion is non-circular, and the main body member is provided with a mounting hole matched with the positioning portion for inserting the positioning portion of the wiring member.

8. A failure breaking indicating assembly of a signal surge protector according to claim 6, wherein a voltage limiting type protecting assembly composed of a voltage limiting type element is integrated on the main body, and the voltage limiting type protecting assembly is connected with the fuse in series.

9. A failure breaking indicating component of a signal surge protector according to claim 8, wherein said voltage limiting type protection component comprises one of a transient diode, a voltage dependent resistor or a combination thereof.

10. A failure breaking indicating component of the signal surge protector according to claim 6, wherein a remote signaling component for remote monitoring is arranged on the main body, the remote signaling component is touched by an indicating piece, and the touch state of the remote signaling component is changed when the indicating piece displaces.

Images