Surge protector

Abstract

The utility model belongs to the technical field of protectors, and particularly relates to a surge protector, which comprises a base, four groups of surge protection units I, four groups of surge protection units II and four groups of surge protection units III, the surge protection unit II comprises a gas discharge tube; the wiring part is arranged on one side outside the base and comprises a wiring terminal L, a wiring terminal L, a wiring terminal L, a wiring terminal N and a wiring terminal PE; a busbar; wherein the terminal L, the terminal L, the terminal L and the terminal N are connected with the busbar through the surge protection unit I, and the terminal PE is connected with the busbar through the surge protection unit II. The surge protector has the beneficial effects that the surge protector adopts the structural layout, and the voltage-sensitive chip is additionally arranged on the basis of the N pole, so that reliable overvoltage protection is also realized for the N pole, overvoltage between the N pole and the busbar is directly inhibited, phase line surge is prevented from entering the N pole, and the surge of the N pole is also prevented from influencing a phase line or equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to protector technical field, especially a kind of surge protector. BACKGROUND

[0002] Surge Protective Device (SPD), also called lightning protection device, is an electronic device for providing safety protection for various electronic equipment, instruments, communication lines. When the electrical circuit or communication line suddenly generates peak current or voltage due to external interference, surge protector can conduct and shunt in a very short time, thereby avoiding the damage of surge to other devices in the circuit.

[0003] Most SPDs use Metal Oxide Varistor (MOV) as surge protection components, which has the advantages of fast response, low residual voltage and strong impact resistance.

[0004] The existing surge protector is usually a combination of three-phase power + zero line (L1, L2, L3 and N), and the N pole is only connected to PE through GDT, only focusing on protecting the phase line (L1-L3), and the protection of N pole is weak. In actual application, overvoltage may occur between N pole and phase line, and between N pole and PE due to surge. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a surge protector to solve the above problems.

[0006] The technical scheme of the utility model is realized as follows: a surge protector, comprising a base, characterized in that it further comprises:

[0007] Surge protection unit one, four groups are provided, comprising a pressure-sensitive chip;

[0008] Surge protection unit two, comprising a gas discharge tube, surge protection unit one and surge protection unit two are arranged side by side in the base;

[0009] Wiring part, opened on one side of the base, comprising wiring terminal L1, wiring terminal L2, wiring terminal L3, wiring terminal N and wiring terminal PE;

[0010] Busbar, connected and fixed to one side of the base away from the wiring part;

[0011] Among them, wiring terminal L1, wiring terminal L2, wiring terminal L3 and wiring terminal N are connected with busbar through surge protection unit one, and wiring terminal PE is connected with busbar through surge protection unit two.

[0012] Further, surge protection unit one comprises:

[0013] The shell one;

[0014] The inner box one is connected and fixed to the inner side of the shell one;

[0015] One side of the inner box one is provided with the high-temperature pin one extending outwardly from the shell one, which is used for inserting the base and the wiring part abutting, and the other side is provided with the low-temperature pin one extending outwardly from the shell one, which is used for inserting the base and the bus bar abutting;

[0016] The indicating part one is slidably installed on one side of the inner box one by the spring;

[0017] The low-temperature tripping part one is connected and fixed to one side of the indicating part one, and is welded and fixed by the low-melting metal and the low-temperature pin one;

[0018] The upper end of the shell one is provided with the indicating window one for observing the indicating part one;

[0019] The four high-temperature pins one are respectively corresponding to the wiring end L1, the wiring end L2, the wiring end L3 and the wiring end N abutting.

[0020] Further, the pressure-sensitive chip is connected and fixed to the inner side of the inner box one, one end of which is connected and fixed with the high-temperature pin one, and the other end is connected and fixed with the low-temperature tripping part one.

[0021] Further, the surge protection unit two comprises:

[0022] The shell two;

[0023] The inner box two is connected and fixed to the inner side of the shell two;

[0024] One side of the inner box two is provided with the high-temperature pin two extending outwardly from the shell two, which is used for inserting the base and the wiring end PE abutting, and the other side is provided with the low-temperature pin two extending outwardly from the shell two, which is used for inserting the base and the bus bar abutting;

[0025] The indicating part two is slidably installed on one side of the inner box two by the spring;

[0026] The low-temperature tripping part two is connected and fixed to one side of the indicating part two, and is welded and fixed by the low-melting metal and the low-temperature pin two;

[0027] The upper end of the shell two is provided with the indicating window two for observing the indicating part two.

[0028] Further, the gas discharge tube is connected and fixed to the inner side of the inner box two, one end of which is connected and fixed with the high-temperature pin two, and the other end is connected and fixed with the low-temperature tripping part two.

[0029] Further, the inner box one and the inner box two are provided with the foolproof interface on one side of the lower end, and a plurality of foolproof parts are connected and fixed on one side adjacent to the wiring part on the upper end of the base, which are arranged side by side and used for cooperating with the foolproof interface.

[0030] Further, it also includes:

[0031] A plurality of micro switches are connected and fixed to one side in the middle of the base and arranged side by side;

[0032] A plurality of remote signaling swing rods are hingedly connected to one side in the middle of the base and arranged side by side, and the micro switches and the remote signaling swing rods correspond one by one;

[0033] Remote signaling terminals are connected and fixed to one side of the base and electrically connected with the micro switches;

[0034] Wherein, one end of the remote signaling swing rod abuts against the triggering end of the micro switch, and the other end extends out of the base and abuts against the indicator one / indicator two.

[0035] The beneficial effects of the utility model are:

[0036] The surge protector adds a pressure-sensitive chip on the basis of the N pole, realizes reliable overvoltage protection for the N pole, directly inhibits the overvoltage between the N pole and the busbar, avoids the phase line surge from entering the N pole, and prevents the N pole surge from affecting the phase line or equipment. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0038] Figure 1 For the specific embodiment of the utility model, the overall structure of the surge protector is shown Figure One ;

[0039] Figure 2 For the specific embodiment of the utility model, the overall structure of the surge protector is shown Figure Two ;

[0040] Figure 3 For the specific embodiment of the utility model, the internal structure of the surge protector is shown Figure One ;

[0041] Figure 4 For the specific embodiment of the utility model, the internal structure of the surge protector is shown Figure Two . DETAILED DESCRIPTION

[0042] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, method and equipment known to those skilled in the art may not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] Embodiment 1:

[0045] As shown in Figures 1 to 4 The utility model discloses a surge protector, including base 1, its characterized in that still includes:

[0046] Surge protection unit one 2 is equipped with four groups, including pressure sensitive chip 200;

[0047] Surge protection unit two 3, including gas discharge tube 300, surge protection unit one 2 and surge protection unit two 3 are arranged in base 1 in parallel;

[0048] Wiring part 4 is set up in the one side of base 1, including wiring end L1, wiring end L2, wiring end L3, wiring end N and wiring end PE;

[0049] Busbar 5 is connected and fixed in the one side of base 1 away from wiring part 4;

[0050] Among them, wiring end L1, wiring end L2, wiring end L3 and wiring end N are connected with busbar 5 through surge protection unit one 2, and wiring end PE is connected with busbar 5 through surge protection unit two 3.

[0051] By adopting the technical scheme, the surge protector is provided with the pressure-sensitive chip on the basis of the N pole, reliable overvoltage protection is realized for the N pole, overvoltage between the N pole and the busbar is directly inhibited, and the phase line surge is prevented from entering the N pole and the N pole surge is prevented from affecting the phase line or the equipment.

[0052] Embodiment 2:

[0053] The embodiment provides a surge protector, in addition to comprising the technical scheme of the above embodiment, further having the following technical features.

[0054] Further, the surge protection unit 2 comprises:

[0055] The shell 201;

[0056] The inner box 202 is connected and fixed to the inner side of the shell 201;

[0057] One side of the inner box 202 is provided with the high-temperature pin 203 extending outwardly from the shell 201, used for abutting with the base 1 and the wiring part 4, and the other side is provided with the low-temperature pin 204 extending outwardly from the shell 201, used for abutting with the busbar 5;

[0058] The indicating part 205 is slidably installed on one side of the inner box 202 through a spring;

[0059] The low-temperature tripping part 206 is connected and fixed to one side of the indicating part 205 and is welded and fixed with the low-temperature pin 204 through the low-melting-point metal;

[0060] The shell 201 is provided with the indicating window 1 at the upper end, used for observing the indicating part 205;

[0061] The four high-temperature pins 203 respectively correspond to the wiring end L1, the wiring end L2, the wiring end L3 and the wiring end N in abutting;

[0062] The pressure-sensitive chip 200 is connected and fixed to the inner side of the inner box 202, one end of which is connected and fixed with the high-temperature pin 203, and the other end is connected and fixed with the low-temperature tripping part 206.

[0063] By adopting the technical scheme, when the wiring end L1 / L2 / L3 / N appears surge, the surge voltage triggers the pressure-sensitive chip to conduct, the current is discharged through the path of the wiring end→the high-temperature pin 1→the pressure-sensitive chip→the low-temperature tripping part 1→the low-temperature pin 1→the busbar, and the overvoltage is quickly clamped in the safe range;

[0064] The low-temperature tripping part 1 is welded and fixed with the low-temperature pin 1 through the low-melting-point metal, at this time, the pressure-sensitive chip, the tripping part and the pin form a complete conductive loop, and the surge can be normally discharged;

[0065] If the pressure sensitive chip overheats due to long-term aging or multiple surge impacts, the low-melting-point metal melts, the connection between the low-temperature pin and the low-temperature release component is disconnected, and the circuit is disconnected. After the circuit is disconnected, the failed pressure sensitive chip is "isolated" to avoid continuous heating of the pressure sensitive chip causing a fire, or causing the power supply system to trip due to a short circuit;

[0066] When the low-temperature release component is welded and fixed with the low-temperature pin, the release component limits the indicating component, and the spring is in a compressed state. The "normal indication" of the indicating component, such as green, can be seen through the indicating window one of the shell one.

[0067] When the low-melting-point metal melts and the release component is disconnected from the pin, the spring releases the elastic force to push the indicating component to slide. The indicating component moves out of the window, and the inner box one, such as red, is exposed at the indicating window. This intuitively indicates that the surge protection unit has failed and needs to be replaced.

[0068] Embodiment 3:

[0069] The embodiment provides a surge protector, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features.

[0070] Further, the second surge protection unit 3 comprises:

[0071] a shell two 301;

[0072] an inner box two 302 connected and fixed to the inner side of the shell two 301;

[0073] The inner box two 302 is provided with a high-temperature pin two 303 extending outward from the shell two 301 on one side, which is used to abut against the base 1 and the wiring end PE, and is provided with a low-temperature pin two 304 extending outward from the shell two 301 on the other side, which is used to abut against the base 1 and the busbar 5;

[0074] an indicating component two 305 slidably installed on one side of the inner box two 302 by a spring;

[0075] a low-temperature release component two 306 connected and fixed to one side of the indicating component two 305 and welded and fixed with the low-temperature pin two 304 by a low-melting-point metal;

[0076] The shell two 301 is provided with an indicating window two for observing the indicating component two 305 on the upper end.

[0077] A gas discharge tube 300 is connected and fixed to the inner side of the inner box two 302, one end of which is connected and fixed with the high-temperature pin two 303, and the other end is connected and fixed with the low-temperature release component two 306.

[0078] By adopting the technical scheme, the structure design of the gas discharge tube of the surge protection unit two provides targeted surge protection for the PE pole, and simultaneously realizes the functions of protection + failure safety disengagement + state visualization, and the tripping logic of the surge protection unit two is consistent with that of the surge protection unit one.

[0079] Embodiment 4:

[0080] The embodiment provides a surge protector, in addition to comprising the technical scheme of the above embodiment, further has the following technical features.

[0081] Further, the inner box one 202 and the inner box two 302 are provided with fool-proof interfaces on one side of the lower end, and a plurality of fool-proof pieces 6 are connected and fixed on one side of the upper end of the base 1 adjacent to the wiring part 4 and arranged side by side to cooperate with the fool-proof interfaces.

[0082] By adopting the technical scheme, the physical limitation of the fool-proof piece cooperating with the fool-proof interface eliminates the possibility of human assembly error, and ensures that the circuit connection and position correspondence of the surge protection unit completely meet the design requirements.

[0083] Embodiment 5:

[0084] The embodiment provides a surge protector, in addition to comprising the technical scheme of the above embodiment, further has the following technical features.

[0085] Further, it further comprises:

[0086] A plurality of micro switches 7 are connected and fixed on one side of the inner middle part of the base 1 and arranged side by side;

[0087] A plurality of remote signaling swing rods 8 are hingedly connected on one side of the inner middle part of the base 1 and arranged side by side, and the micro switch 7 and the remote signaling swing rod 8 are one-to-one corresponding;

[0088] A remote signaling terminal 9 is connected and fixed on the outer side of the base 1 and electrically connected with the micro switch 7;

[0089] Among them, one end of the remote signaling swing rod 8 abuts against the triggering end of the micro switch 7, and the other end extends out of the base 1 and abuts against the indicating piece one 205 / indicating piece two 305.

[0090] In the above technical scheme, the triggering end of the micro switch can be a button or a trigger mechanism such as a spring piece;

[0091] By adopting the technical scheme, remote state monitoring and alarming of the surge protector are realized through cooperation of the micro switch, the remote signaling swing lever and the remote signaling terminal. When the low-melting point between the tripping member and the indicating member loses fixation due to high temperature melting, the indicating member is actuated under the action of the spring to trigger the remote signaling swing lever to actuate the micro switch. The state change (on / off) of the micro switch is outputted to the outside through the remote signaling terminal, so that remote transmission of the protection unit failure signal is realized.

[0092] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A surge protector comprising a base (1), characterized in that, Also include: Surge protection unit one (2) is provided with four groups, including pressure sensitive chip (200); Surge protection unit two (3) includes gas discharge tube (300), and surge protection unit one (2) and surge protection unit two (3) are arranged side by side in the base (1); The wiring part (4) is opened in the outer side of the base (1), including the wiring end L1, the wiring end L2, the wiring end L3, the wiring end N and the wiring end PE; The busbar (5) is connected and fixed in the base (1) away from the wiring part (4) on one side; Wherein, the wiring end L1, the wiring end L2, the wiring end L3 and the wiring end N are connected through the surge protection unit one (2) and the busbar (5), and the wiring end PE is connected through the surge protection unit two (3) and the busbar (5).

2. A surge protector according to claim 1, wherein, Surge protection unit one (2) includes: The shell one (201); The inner box one (202) is connected and fixed to the inner side of the shell one (201); One side of the inner box one (202) is provided with high temperature pin one (203) extending to the outside of the shell one (201), which is used to insert the base (1) and the wiring part (4) abutting, and the other side is provided with low temperature pin one (204) extending to the outside of the shell one (201), which is used to insert the base (1) and the busbar (5) abutting; The indicating part one (205) is slidably installed on one side of the inner box one (202) through the spring; The low temperature tripping part one (206) is connected and fixed on one side of the indicating part one (205), and is welded and fixed through the low melting point metal and the low temperature pin one (204); Wherein, the shell one (201) is provided with an indicating window one at the upper end for observing the indicating part one (205); Wherein, the four high temperature pins one (203) are respectively corresponding to the wiring end L1, the wiring end L2, the wiring end L3 and the wiring end N abutting.

3. A surge protector according to claim 2, wherein, The pressure sensitive chip (200) is connected and fixed to the inner side of the inner box one (202), one end of which is connected and fixed with the high temperature pin one (203), and the other end is connected and fixed with the low temperature tripping part one (206).

4. A surge protector according to claim 2, wherein, Surge protection unit two (3) includes: The shell two (301); The inner box two (302) is connected and fixed to the inner side of the shell two (301); One side of the inner box two (302) is provided with high temperature pin two (303) extending to the outside of the shell two (301), which is used to insert the base (1) and the wiring end PE abutting, and the other side is provided with low temperature pin two (304) extending to the outside of the shell two (301), which is used to insert the base (1) and the busbar (5) abutting; The indicating part two (305) is slidably installed on one side of the inner box two (302) through the spring; The low temperature tripping part two (306) is connected and fixed on one side of the indicating part two (305), and is welded and fixed through the low melting point metal and the low temperature pin two (304); Wherein, the shell two (301) is provided with an indicating window two at the upper end for observing the indicating part two (305).

5. A surge protector according to claim 4, wherein, The gas discharge tube (300) is connected and fixed to the inner side of the inner box two (302), one end of which is connected and fixed with the high temperature pin two (303), and the other end is connected and fixed with the low temperature tripping part two (306).

6. A surge protector according to claim 4, wherein, The inner box one (202) and the inner box two (302) are provided with anti-fooling interfaces on one side of the lower end, and a plurality of anti-fooling pieces (6) are fixedly connected to one side of the upper end of the base (1) adjacent to the wiring part (4) and are arranged side by side to cooperate with the anti-fooling interfaces.

7. The surge protector of claim 1, wherein, Further comprising: A plurality of micro switches (7) are fixedly connected to one side of the middle part of the base (1) and are arranged side by side; A plurality of remote signaling swing rods (8) are hingedly connected to one side of the middle part of the base (1) and are arranged side by side, and the micro switches (7) and the remote signaling swing rods (8) correspond to each other one by one; A remote signaling terminal (9) is fixedly connected to one side of the base (1) and is electrically connected with the micro switches (7); Wherein, one end of the remote signaling swing rod (8) abuts against the triggering end of the micro switch (7), and the other end extends out of the base (1) and abuts against the indicating piece one (205) / indicating piece two (305).

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