Surge protector with remote signaling function

Abstract

The utility model discloses a surge protector with a remote signaling function, which comprises a shell and an inner core inserted in the shell, the shell is provided with a movable contact frame, the head part of the movable contact frame is provided with a first trigger part in an extending manner, the inner core is provided with a rotatable pressing plate, and the pressing plate is provided with a second trigger part in an extending manner. The shell is provided with a first microswitch and a second microswitch, a trigger piece of the first microswitch is located on the moving track of the first trigger part, a trigger key of the second microswitch is located below the pressing plate, and signal terminals are arranged at the two ends of the shell. A background can quickly know whether the first micro switch or the second micro switch is triggered through the two signal terminals, so that a worker can preliminarily know whether the circuit is subjected to surge protector tripping caused by overlarge current or short circuit or inner core tripping protection caused by over-temperature, over-current and over-voltage of the circuit; therefore, a worker can quickly solve the line problem in a targeted manner according to the collected information.

Description

TECHNICAL FIELD

[0001] The utility model relates to lightning protection equipment technical field especially, it relates to a surge protection device with remote signaling function. BACKGROUND

[0002] Surge Protective Device (SPD) is a device to limit transient overvoltage and guide surge current. It not only has lightning protection function, but also has the effect of suppressing switching overvoltage, so the application field of surge protective device is very wide; its function is to limit the transient overvoltage that intrudes into power line, signal transmission line in the voltage range that equipment or system can bear, or discharge the powerful lightning current into the ground, and protect the equipment or system to be protected from impact.

[0003] To ensure that SPD runs safely and effectively in the system, a backup protector is connected in series in front of SPD. SCB (Special Circuit Breaker) has high surge current resistance, reduces residual voltage, does not break down under heavy lightning impulse current, ensures that SPD lightning protection is effective. It can segment power frequency fault current, ensures that SPD does not catch fire and explode, and protects the power grid and electrical safety.

[0004] The existing surge protective device shares one remote signaling, and the background cannot know whether the remote signaling is triggered by the surge protective device or the backup protector, which is not conducive to the preliminary judgment of the line condition by the staff, therefore, the applicant has made beneficial design, found a method to solve the above problems, and the technical scheme to be introduced below is generated under this background. SUMMARY

[0005] The utility model discloses a product that helps to solve the line problem quickly is provided to overcome the shortcoming of the prior art.

[0006] To solve the above problems, the utility model adopts the following technical scheme.

[0007] A kind of surge protective device with remote signaling function, including shell, and the inner core of plug-in in shell, the shell is equipped with movable contact holder, the head of movable contact holder extends and is equipped with first trigger part, the inner core is equipped with rotatable pressing plate, the shell is equipped with first microswitch, second microswitch, the trigger piece of first microswitch is located on the activity locus of first trigger part, the trigger key of second microswitch is located below the pressing plate, the both ends of the shell are equipped with signal terminal, first microswitch, second microswitch are respectively electrically connected with adjacent signal terminal.

[0008] Preferably, the shell is internally provided with an electromagnetic release, a discharge tube, and a thermistor, the discharge tube is provided with a first lead-out end and a second lead-out end, the first lead-out end is provided with a static contact, the second lead-out end is electrically connected with the electromagnetic release, one end of the thermistor is electrically connected with the first lead-out end, and the other end of the thermistor is electrically connected with the electromagnetic release.

[0009] Preferably, the shell is provided with two terminal ends, one of the terminal ends is provided with a conductive part, and the other terminal end is electrically connected with the movable contact holder through a flexible connecting wire, and the signal terminal is arranged below the terminal end.

[0010] Preferably, the movable contact holder is further provided with a release part and is in linkage with the movable contact holder, and the movable contact holder is provided with a movable contact.

[0011] Preferably, the second lead-out end and the conductive part are provided with through holes.

[0012] Preferably, one end of the pressing plate is hingedly connected to the shell, and the other end of the pressing plate is provided with a protruding pressure receiving part.

[0013] Preferably, the inner core comprises a shell, conductive plates arranged at two ends of the shell, a MOV pressure sensitive resistor, and a release block, the conductive plates are provided with curved elastic parts and are inserted into the through holes, one of the conductive plates is provided with a release electrode, the release electrode is welded to a release point of the MOV pressure sensitive resistor through low-temperature alloy, the other conductive plate is electrically connected with the MOV pressure sensitive resistor, one end of the release block is hingedly connected to the shell, the release block is provided with a contact part and a second trigger part, an upper end of the release block is provided with a tension spring and is fixedly connected with the shell, so that the contact part is tightly pressed against the release electrode, and the second trigger part applies downward pressure to the pressure receiving part.

[0014] Beneficial effects:

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model discloses, background can know first micro -switch or second micro -switch is triggered through two signal terminals, and the staff is preliminary known that the line is because the surge protection device is tripped because of the current too big or short circuit, or because the line is too warm, and the core is tripped protection because of overcurrent, overvoltage, and this helps the staff to collect information, and the line problem is solved quickly in the light of the targeted, and the product has the advantage that the line problem is solved quickly. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the internal front view of the utility model surge protection device with remote signaling function;

[0018] Figure 2 It is the utility modelFigure 1 A place amplification structure schematic view of a surge protector with remote signaling function of the utility model;

[0019] Figure 3 A disassembly structure schematic view of a surge protector with remote signaling function of the utility model;

[0020] Figure 4 A B place amplification structure schematic view of a surge protector with remote signaling function of the utility model; Figure 3

[0021] The corresponding relationship between the various figure marks and the component names in the drawings is as follows:

[0022] Mark: 1, shell; 2, inner core; 3, moving contact frame; 4, electromagnetic release; 5, discharge tube; 6, thermistor; 7, terminal; 8, release; 9, through hole;

[0023] 11, first micro switch; 12, second micro switch; 13, signal terminal;

[0024] 21, pressing plate; 22, shell; 23, conductive plate; 24, MOV pressure sensitive resistor; 25, release block; 26, release electrode; 27, tension spring;

[0025] 211, pressure bearing part;

[0026] 231, elastic part;

[0027] 251, abutting part; 252, second trigger part;

[0028] 31, first trigger part; 32, moving contact;

[0029] 51, first lead-out end; 52, second lead-out end; 53, stationary contact;

[0030] 71, conductive part; 72, soft connecting wire. DETAILED DESCRIPTION

[0031] The technical solutions of the utility model will be described clearly and completely below in combination with embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] ​In the description of the utility model, it is understood that the directions or position relations indicated by the terms such as ''up'', ''down'', ''left'', ''right'' in the specification are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0033] In the embodiments of the utility model, ''and / or'' is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist simultaneously, and B exists alone.

[0034] Reference example Figures 1 to 4 A surge protector with remote signaling function, comprising a shell 1, and an inner core 2 inserted in the shell 1, the shell 1 is provided with a movable contact holder 3, the head of the movable contact holder 3 is provided with a first trigger part 31, the inner core 2 is provided with a rotatable pressing plate 21, the shell 1 is provided with a first micro switch 11 and a second micro switch 12, the trigger piece of the first micro switch 11 is located on the activity track of the first trigger part 31, the trigger key of the second micro switch 12 is located below the pressing plate 21, the two ends of the shell 1 are provided with signal terminals 13, the first micro switch 11 and the second micro switch 12 are respectively electrically connected with the adjacent signal terminals 13, the background can quickly know whether the first micro switch 11 or the second micro switch 12 is triggered through the two signal terminals 13, so that the staff can preliminarily know whether the line causes the surge protector to trip because of the excessive current or the short circuit, or whether the line causes the inner core 2 to trip protection because of the excessive temperature and current, which helps the staff to quickly solve the line problem according to the collected information;

[0035] It is worth mentioning that the shell 1 is provided with an electromagnetic release 4, a discharge tube 5 and a thermistor 6, the discharge tube 5 is provided with a first lead-out end 51 and a second lead-out end 52, the first lead-out end 51 is provided with a static contact 53, the second lead-out end 52 is electrically connected with the electromagnetic release 4, one end of the thermistor 6 is electrically connected with the first lead-out end 51, and the other end is electrically connected with the electromagnetic release 4, the electromagnetic release 4 drives the release 8 to move, when the current in the line exceeds a certain threshold value, the temperature of the thermistor 6 will rise, so that the resistance value increases, thereby limiting the current and preventing the electrical equipment from being damaged, in the normal working state, the discharge tube 5 maintains a high resistance state and will not conduct current, when the sudden voltage or current in the line exceeds the normal working range of the electrical equipment, the discharge tube 5 will produce corona discharge to form a low impedance path, so that the surge current passes through the discharge tube 5 instead of the electrical equipment;

[0036] It is worth mentioning that the both ends of the shell 1 are provided with the terminal 7, one of the terminal 7 is provided with the conductive part 71, one of the terminal 7 is connected with the movable contact 3 through the flexible connecting wire 72, and the signal terminal 13 is arranged below the terminal 7;

[0037] It is worth mentioning that the movable contact 3 is further provided with the tripping part 8 and is linked with the movable contact 3, and the movable contact 3 is provided with the movable contact 32;

[0038] It is worth mentioning that the second lead-out end 52 and the conductive part 71 are provided with the through hole 9, the elastic part 231 is inserted into the through hole 9 and is electrically connected with the second lead-out end 52 and the conductive part 71;

[0039] It is worth mentioning that one end of the pressing plate 21 is hinged to the shell 1, and the other end of the pressing plate 21 is provided with the convex pressure bearing part 211 which is matched with the trigger part;

[0040] It is worth mentioning that the inner core 2 comprises the shell 22, the conductive plate 23 and the MOV pressure sensitive resistor 24 which are arranged at the both ends of the shell 22, and the tripping block 25, the conductive plate 23 is provided with the curved elastic part 231 and is inserted into the through hole 9, one of the conductive plate 23 is provided with the tripping electrode 26 which is welded to the tripping point of the MOV pressure sensitive resistor 24 through low-temperature alloy, the other conductive plate 23 is electrically connected with the MOV pressure sensitive resistor 24, one end of the tripping block 25 is hinged to the shell 22, the tripping block 25 is provided with the abutting part 251 and the second trigger part 252, the upper end of the tripping block 25 is provided with the tension spring 27 and is fixedly connected with the shell 22, so that the abutting part 251 is tightly pressed against the tripping electrode 26, and the second trigger part 252 applies downward pressure to the pressure bearing part 211, the elastic force released by the elastic part 231 is applied to one side of the through hole 9, so that the conductive plate 23 is tightly pressed against the other side of the through hole 9, and the stable electrical connection is ensured;

[0041] The use principle of the utility model will be described as follows:

[0042] Embodiment 1

[0043] When the line occurs the power frequency fault current, the movable iron core of the electromagnetic release 4 acts and pushes the tripping part 8 to move, so that the movable contact 3 and the tripping part 8 are locked and kept disintegrated, the movable contact is quickly reset, the trigger part triggers the first micro switch 11 to be closed, and the signal terminal 13 sends the signal to the background, so that the background personnel preliminarily knows that the line is caused by the surge protector tripping due to the excessive current or the short circuit.

[0044] Embodiment 2

[0045] When the line overvoltage fault, MOV varistor 24 will be overvoltage, overcurrent, etc. Changes in temperature, when the temperature reaches the melting point of low temperature alloy welding, pull spring 27 release the elastic force to pull the tripping block 25 around its hinge point fast rotation, resist the part 251 push the tripping electrode 26 fast away from the lead-out pin of MOV varistor 24, cut off the power supply line, the second trigger part 252 from the pressure part 211 above, the second micro switch 12 inside release the elastic force to the trigger key to make it push the pressure plate 21 up, the signal terminal 13 sends a signal to the background, so that the background personnel preliminary know that this line is due to line over temperature, overcurrent, overvoltage caused by the core 2 tripping protection.

[0046] The above design scheme can make the product realize the advantage of helping to quickly solve the line problem.

[0047] The above content is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope determined by the claims submitted by the utility model.

Claims

1. A surge protector with remote signaling function, comprising a shell (1) and an inner core (2) inserted in the shell (1), characterized in that: The shell (1) is provided with a moving contact holder (3), the head of the moving contact holder (3) is provided with a first trigger part (31), the inner core (2) is provided with a rotatable pressing plate (21), the shell (1) is provided with a first micro switch (11) and a second micro switch (12), the trigger piece of the first micro switch (11) is located on the activity track of the first trigger part (31), the trigger key of the second micro switch (12) is located below the pressing plate (21), the two ends of the shell (1) are provided with signal terminals (13), and the first micro switch (11) and the second micro switch (12) are electrically connected with the adjacent signal terminals (13) respectively.

2. The surge protector with remote signaling function according to claim 1, wherein: The shell (1) is provided with an electromagnetic release (4), a discharge tube (5) and a thermistor (6), the discharge tube (5) is provided with a first lead-out end (51) and a second lead-out end (52), the first lead-out end (51) is provided with a static contact (53), the second lead-out end (52) is electrically connected with the electromagnetic release (4), one end of the thermistor (6) is electrically connected with the first lead-out end (51), and the other end of the thermistor (6) is electrically connected with the electromagnetic release (4).

3. The surge protector with remote signaling function according to claim 2, wherein: The two ends of the shell (1) are provided with wiring terminals (7), one of the wiring terminals (7) is provided with a conductive part (71), one of the wiring terminals (7) is electrically connected with the moving contact holder (3) through a soft connecting wire (72), and the signal terminals (13) are arranged below the wiring terminals (7).

4. The surge protector with remote signaling function according to claim 2, wherein: The moving contact holder (3) is further provided with a release part (8) and is linked with the moving contact holder (3) to move, and the moving contact holder (3) is provided with a moving contact (32).

5. The surge protector with remote signaling function according to claim 3, wherein; The second lead-out end (52) and the conductive part (71) are provided with a through hole (9).

6. The surge protector with remote signaling function according to claim 5, wherein One end of the pressing plate (21) is hinged to the shell (1), and the other end of the pressing plate (21) is provided with a protruding pressure bearing part (211).

7. The surge protector with remote signaling function according to claim 6, wherein: The inner core (2) comprises an outer shell (22), conductive plates (23) arranged at the two ends of the outer shell (22), MOV pressure sensitive resistors (24) and release blocks (25), the conductive plates (23) are provided with curved elastic parts (231) and are inserted into the through holes (9), one of the conductive plates (23) is provided with a release electrode (26), the release electrode (26) is welded to the release point of the MOV pressure sensitive resistor (24) through low-temperature alloy, the other conductive plate (23) is electrically connected with the MOV pressure sensitive resistor (24), one end of the release block (25) is hinged to the outer shell (22), the release block (25) is provided with a contact part (251) and a second trigger part (252), the upper end of the release block (25) is provided with a tension spring (27) and is connected and fixed with the outer shell (22), so that the contact part (251) is tightly pressed against the release electrode (26), and the second trigger part (252) applies downward pressure to the pressure bearing part (211).

Images