CN217215945U - Surge protection device - Google Patents

Abstract

The utility model discloses a surge protector, including protection component and tripping device, protection component connects in parallel at least and is provided with two, protection component is connected with a tripping device's the shell fragment that breaks away from simultaneously, and the pin that breaks away from shell fragment and every protection component is welded connection respectively in order to constitute respectively and breaks away from the solder joint. Surge protector in reduced under the condition that breaks away from mechanism use quantity, realized that every protection element all has the protect function of independent overload disconnection, effectively reduce surge protector's whole volume, every protection element is connected the constitution with breaking away from the shell fragment respectively simultaneously and is broken away from the solder joint, has guaranteed surge protector's high-flux ability, reaches the miniaturized demand of big through-flow.

Description

Surge protector

Technical Field

The utility model relates to an electrical protection device technical field especially relates to a surge protector.

Background

A surge protector is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines. When the peak current or voltage is suddenly generated in the electric loop or the communication line due to external interference, the surge protector can conduct and discharge the lightning current in a very short time, so that the damage of the surge to other equipment in the loop is avoided. Along with the miniaturization of protected equipment, the compact utilization of equipment fitting space leads to surge protector also to the miniaturization development, but has the demand of big through-flow ability simultaneously again, and current surge protector who realizes big through-flow structure is complicated, occupies bulky, and is with high costs, is difficult to satisfy the demand of miniaturization and low-cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve and the technical task that provides improve prior art, provide a surge protector, solve the surge protector that satisfies big through-flow capacity requirement among the prior art bulky, the structure is not compact, can't satisfy the problem of installation space demand.

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

a surge protector comprises at least two protection elements and tripping mechanisms, wherein the protection elements are connected in parallel, the protection elements are simultaneously connected with a separating elastic sheet of one tripping mechanism, and the separating elastic sheet is respectively connected with pins of each protection element in a welding mode to form separating welding points respectively. The breaking away shrapnel in the surge protector is connected with at least two protection elements simultaneously, and the breaking away shrapnel is connected with each protection element through low temperature solder respectively to form a breaking away welding spot, each protection element has the protection function of overload disconnection, the using quantity of the breaking away mechanism is reduced, the whole volume of the surge protector is effectively reduced, and because each protection element is connected with the breaking away shrapnel respectively to form the breaking away welding spot, the through-flow capacity is effectively improved, the requirement of large through-flow is met, each protection element is connected with the tripping mechanism, when the overload current exceeding the bearing capacity of the protection device is met, the low temperature solder breaking away from the welding spot can be melted by the rapid temperature rise of any voltage limiting type protection device, thereby the tripping mechanism is promoted to trip (the pin separating from the shrapnel and the protection element is disconnected) to break off the circuit, thereby meeting the use safety requirement.

Furthermore, the separation elastic sheet is provided with jacks corresponding to the pins of each protection element respectively, and the pins of the protection elements are inserted into the jacks and then are welded. The connection reliability of the separation elastic sheet and the protection element pin is higher, the large through-current capacity is guaranteed, meanwhile, the jack plays a role in positioning the protection element pin, and the protection element pin is conveniently and accurately connected with the separation elastic sheet.

Furthermore, the jacks are arranged side by side in the direction perpendicular to the length of the jacks, so that pins of different protection elements are more closely adjacent to the separation welding points formed by the separation elastic sheets, and all the separation welding points are disconnected when the temperature of any voltage-limiting protection device is rapidly increased, namely all the voltage-limiting protection devices can be disconnected with the separation elastic sheets at the same time, equipment is effectively protected, and the use safety is improved.

Furthermore, break away from and be provided with the strengthening rib on the shell fragment, improve the structural strength who breaks away from the shell fragment, break away from the shell fragment and can not take place to warp when passing through the heavy current to when making the low temperature solder who breaks away from the solder joint take place to melt, break away from the shell fragment and can effectively kick-back and then separate the disconnection with the pin of protection component, thereby the effective protection equipment of open circuit.

Further, have one at least the length direction of strengthening rib is along the length direction of jack and set up side by side with the jack, and the jack can reduce the structural strength and the resilience that break away from the shell fragment, probably appears breaking away from the shell fragment and taking place the situation of bending deformation in jack position department to be difficult to ensure effective open circuit, the utility model discloses utilize the strengthening rib to strengthen the structural strength of jack position department, avoid taking place to buckle, the guarantee breaks away from the shell fragment and can effectively kick-back, thereby ensures that effective open circuit can be with protective apparatus.

Furthermore, the protection device further comprises an isolation chamber, the protection elements are respectively installed in different isolation chambers, and through holes for the pins of the protection elements to penetrate out to be connected with the separation spring pieces are formed in the isolation chambers. The protection elements are effectively isolated, mutual influence is avoided, the insulation isolation effect is improved, and the protection performance is improved.

Furthermore, the isolation chambers are arranged side by side, the through holes for the protection elements to pass in and out on all the isolation chambers are located on the same side, and the through holes for the protection element pins to pass out on the isolation chambers are located on the opposite sides of the through holes. The structure is compact, the whole volume is reduced, and the requirement of installation space is met.

Furthermore, the tripping mechanism further comprises a pushing piece and an elastic piece, wherein the elastic piece is in an energy storage state before the pins of the separation spring plate and the protection element are not disconnected, and the pushing piece is driven to move after the pins of the separation spring plate and the protection element are separated so as to enlarge the distance between the pins of the separation spring plate and the protection element, and improve the reliability of the circuit disconnection for protecting equipment.

Furthermore, the remote signaling device is used for being touched by the pushing piece, the pushing piece changes the touch state of the remote signaling device when moving, remote signaling monitoring can be carried out on the state of the buckling mechanism, the working state of the surge protector can be timely mastered, and the maintenance efficiency is improved.

Furthermore, the surge protector is a multi-path protection structure, and each protection line comprises a protection element and a tripping mechanism connected with the protection element, wherein the protection element and the tripping mechanism are arranged in parallel.

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

surge protector under the circumstances that has reduced the use quantity of breaking away from the mechanism, realize that every voltage limiting type protection element all has the protect function of independent overload disconnection, effectively reduce surge protector's whole volume, every protection element is connected the constitution with breaking away from the shell fragment respectively simultaneously and is broken away from the solder joint, has guaranteed surge protector's high-pass flow ability, satisfies the miniaturized demand of big through-flow.

Drawings

Fig. 1 is a schematic structural view of the surge protector in which a protection element is engaged with a tripping mechanism;

fig. 2 is a schematic structural view of the surge protector of the present invention, in which the pin of the protection element penetrates through the isolation chamber and is engaged with the tripping mechanism;

FIG. 3 is a rear side view of the structure of FIG. 2;

FIG. 4 is a schematic structural view of a detachment spring;

fig. 5 is a schematic view of the housing structure of the surge protector.

In the figure:

the protection device comprises a protection element 1, a tripping mechanism 2, a disengaging elastic sheet 21, an inserting hole 211, a reinforcing rib 212, a pushing piece 22, an elastic piece 23, an isolation chamber 3, a remote signaling device 4, a shell 5, an indication window 51, a working wiring terminal 61 and a public wiring terminal 62.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 surge protector, compact structure, spare part are small in quantity, effectively reduce under the condition of realizing big through-flow and occupy the volume, satisfy the demand of miniaturized development, use the reliability high, and protective properties is good.

As shown in fig. 1 to 5, a surge protector mainly includes a protection element 1 and a trip mechanism 2, two protection elements 1 are connected in parallel, the two protection elements 1 are simultaneously connected with a separation elastic sheet 21 of a tripping mechanism 2, and the separation elastic sheet 21 and the pin of each protection element 1 are respectively connected by low-temperature solder to respectively form separation welding points, in other words, two separation welding points are arranged on one separation elastic sheet 21, so that each protection element 1 has the protection function of overload disconnection, meanwhile, the two protection elements 1 are respectively provided with independent welding point separation, so that the current capacity is improved, the requirement of 8/20us @120kA large current can be met, the number of tripping mechanisms 2 is reduced, thereby effectively improve compact structure nature, reduce surge protector's whole volume, satisfy the miniaturized demand of big through-flow.

The surge protector adopts a multi-path protection structure, each protection circuit comprises two protection elements 1 which are arranged in parallel and a tripping mechanism 2 connected with the protection elements 1 respectively, concretely, the protection circuit is provided with two paths, in each protection circuit, one pin of the two protection elements 1 is connected together to form a common end, the other pin of the two protection elements 1 is connected with a separation shrapnel 21 in a welding way, the separation shrapnel 21 is connected with a working wiring terminal 61 arranged on the surge protector, the common end of the two protection elements 1 is connected together with the common end of the protection element 1 in the other protection circuit and then is connected with a common wiring terminal 62 arranged on the surge protector, in the embodiment, a bus bar is arranged in the surge protector, and one pin of all the protection elements 1 is connected to the bus bar to form the common end, the bus bar is provided with a public wiring terminal, the two protection circuits are respectively provided with a tripping mechanism 2, and the separating shrapnels 21 of the two tripping mechanisms 2 are respectively connected with a working wiring terminal to finally form a multi-path protection structure.

In this embodiment, the separation elastic sheet 21 is provided with insertion holes 211 corresponding to the pins of each protection element 1, the pins of the protection elements 1 are inserted into the insertion holes 211 and then welded, so as to ensure large current capacity, and the pins of the protection elements 1 are positioned by the insertion holes 211, so as to ensure that the pins of the protection elements 1 are accurately connected with the separation elastic sheet 21.

The pins of the protection element 1 are flat and sheet, so that the insertion holes 211 are long strip-shaped holes, two insertion holes 211 are formed in one separation elastic sheet 21, in order to ensure that all separation welding points can be disconnected when the temperature of any voltage limiting protection device is rapidly increased, the insertion holes 211 are arranged side by side in the direction perpendicular to the length of the insertion holes 211, so that the separation welding points are more adjacent, so that when the temperature of any voltage limiting protection device is too high, the solder separated from the welding points can be melted, another solder separated from the welding points can be melted, all the voltage limiting protection devices can be disconnected with the separation elastic sheet at the same time, and a circuit is effectively disconnected to protect equipment; break away from and set up the structural strength reduction, the resilience reduction that jack 211 can lead to breaking away from shell fragment 21 on the shell fragment 21 to the situation that can't reliably the dropout separation appears, consequently be provided with strengthening rib 212 on the shell fragment 21, it is concrete, strengthening rib 212 is the rectangular shape convex closure structure through sheet metal working, has at least one the length direction of strengthening rib 212 sets up along the length direction of jack 211 and side by side with jack 211, utilizes strengthening rib 212 to strengthen the structural strength of jack 211 position department, avoids breaking away from shell fragment 21 and takes place to buckle, ensures to break away from effective resilience of shell fragment 21 with the broken circuit, improves the dropout reliability.

The surge protector is provided with a plurality of isolation chambers 3, the protection elements 1 can be voltage-limiting protection elements or switch-type protection elements, the embodiment specifically adopts piezoresistors, the protection elements 1 are respectively installed in different isolation chambers 3, through holes for pins of the protection elements 1 to penetrate out to be connected with the separation elastic sheet 21 are formed in the isolation chambers 3, the protection elements 1 are isolated from each other relatively, mutual influence is avoided, stable and independent work is ensured, the tripping mechanism 2 is wholly arranged outside the isolation chambers 3, the electrical isolation effect after tripping is ensured, and the protection performance is improved;

specifically, keep apart cavity 3 and set up side by side, all keep apart the opening that supplies the business turn over of protection component 1 on the cavity 3 and lie in same one side, keep apart the through-hole that the 1 pin of confession protection component on the cavity 3 wore out and lie in the offside of opening, compact structure easily installs, maintains.

The tripping mechanism 2 further comprises a pushing piece 22 and an elastic piece 23, the elastic piece 23 is in an energy storage state before the separation spring piece 21 is disconnected with the pin of the protection element 1, and drives the pushing piece 22 to move after the separation spring sheet 21 is separated from the pin of the protection element 1 so as to expand the distance between the separation spring sheet 21 and the pin of the protection element 1, specifically, the pushing member 22 is slidably disposed outside the isolation chamber 3, and the elastic member 23 is a spring, and before the separation spring sheet 21 and the pin of the protection element 1 are not disconnected, the pushing piece 22 is abutted against the separation shrapnel 21 under the action of the elastic piece 23, and after the separation shrapnel 21 is separated from the pin of the protection element 1, the elastic member 23 releases the elastic force to push the pushing member 22 to move to change the position, and the pushing member 22 pushes the disengaging spring 21 to further away from the pin of the protection element 1, thereby ensuring effective disconnection of the circuit to protect the equipment.

This embodiment surge protector still be provided with remote signalling device 4, every tripping device 2 corresponds respectively and is provided with a remote signalling device 4, remote signalling device 4 by the touch-control of top ejector 22, change when top ejector 22 removes to 4 touch-control states of remote signalling device to timely sending out surge protector operating condition's signal, be convenient for in time maintain, two remote signalling devices 4 combine the way after establishing ties through the PCB board and draw forth, can all monitor two tripping device 2's state simultaneously.

The surge protector described in this embodiment further includes a housing 5, the housing 5 is divided into an upper portion and a lower portion, the protection element 1, the tripping mechanism 2 and the isolation chamber 3 are all disposed in the housing 5, the housing plays an effective protection role, the surge protector stably works, and the housing 5 is provided with an indication window 51, the top push piece 22 is provided with an indication portion, when the top push piece 22 moves in position under the action of the elastic piece 23, different parts of the indication portion are exposed from the indication window 51 to show the state of the surge protector, namely, whether the surge protector trips.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the 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 surge protector is characterized by comprising protection elements (1) and tripping mechanisms (2), wherein the protection elements (1) are at least connected in parallel, the protection elements (1) are simultaneously connected with a separation elastic sheet (21) of one tripping mechanism (2), and the separation elastic sheet (21) is respectively connected with pins of each protection element (1) in a welding mode to form separation welding spots respectively.

2. A surge protector according to claim 1, wherein the detachment spring (21) is provided with insertion holes (211) corresponding to the pins of each protection element (1), and the pins of the protection elements (1) are inserted into the insertion holes (211) and then welded.

3. A surge arrester as claimed in claim 2, wherein the receptacles (211) are arranged side-by-side in a direction perpendicular to the length of the receptacles (211).

4. A surge arrester as claimed in claim 2, wherein the detachment spring (21) is provided with a reinforcement rib (212).

5. A surge arrester as claimed in claim 4, wherein at least one of the ribs (212) has a length that is aligned with the length of the insertion hole (211) and is juxtaposed with the insertion hole (211).

6. A surge protector according to any of claims 1 to 5, further comprising isolation chambers (3), wherein the protection elements (1) are respectively mounted in different isolation chambers (3), and through holes for the pins of the protection elements (1) to pass through to connect with the separation spring (21) are formed in the isolation chambers (3).

7. A surge protector according to claim 6, wherein the isolation chambers (3) are arranged side by side, the through-holes for the protection elements (1) to pass in and out of all the isolation chambers (3) are located on the same side, and the through-holes for the protection elements (1) to pass out of the through-holes on the isolation chambers (3) are located on the opposite side of the through-holes.

8. A surge protector according to any of claims 1 to 5, wherein the trip mechanism (2) further comprises an urging member (22) and an elastic member (23), the elastic member (23) is in a stored energy state before the separation spring (21) is disconnected from the pin of the protection element (1), and drives the urging member (22) to move after the separation spring (21) is separated from the pin of the protection element (1) so as to enlarge the distance between the separation spring (21) and the pin of the protection element (1).

9. A surge arrester as claimed in claim 8, further comprising a remote signaling device (4), wherein the remote signaling device (4) is touched by the push member (22), and wherein movement of the push member (22) changes a state of touch to the remote signaling device (4).

10. A surge protector according to any one of claims 1 to 5, wherein the surge protector is a multi-path protection structure, and each protection path comprises a protection element (1) and a tripping mechanism (2) connected to the protection element (1) in parallel.

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