CN209981126U

CN209981126U - Tripping device of surge protector

Info

Publication number: CN209981126U
Application number: CN201920631867.5U
Authority: CN
Inventors: 沈家东; 徐祝勤
Original assignee: Phoenix Asia Pacific Electric (nanjing) Co Ltd
Current assignee: Phoenix Asia Pacific Electric (nanjing) Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-01-21
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a surge protector tripping device, which comprises a safety mechanism, an arc-extinguishing plate, a second spring, a first metal electrode, a second metal electrode, a third metal electrode and a remote signaling switch which are arranged in an inner shell, wherein the first metal electrode comprises a first projecting pin positioned at the rear part and a second projecting pin positioned at the middle part, the third metal electrode is fixedly connected with the second projecting pin through low-temperature welding, the upper part of the second metal electrode is pressed and propped against the first projecting pin by the rear part of the safety mechanism, the bottom of the arc-extinguishing plate is propped against the upper end of the second spring, the top of the arc-extinguishing plate is propped against the inclined plane section of the second metal electrode, after the second protruding pin is separated from the third metal electrode, the safety mechanism can generate displacement to be separated from the remote signaling switch, and the arc extinguishing plate can move upwards to a position between the first protruding pin and the upper section so as to realize the isolation of the first protruding pin and the upper section. The utility model discloses compact structure just can realize quick, effectual protection.

Description

Tripping device of surge protector

Technical Field

The utility model belongs to the technical field of the lightning protection device, in particular to surge protector's trip gear.

Background

A lightning protector, also called a lightning arrester, a surge protector, an overvoltage protector, etc., is an electronic device for providing safety protection for various electronic devices, instruments and meters, and communication lines. When the peak current or the voltage is suddenly generated in the electric loop or the communication line due to the external interference, the surge protector can conduct and shunt in a very short time, so that the damage of the surge to other equipment in the loop is avoided.

Traditional lightning protection device, what the conductor junction adopted mostly is the welding mode, to equipment requirement, the frock requirement, operating personnel technical requirement all is higher, is difficult to realize automated production, and efficiency and cost greatly restrict on welding process, and weld and produce easily and connect the dead phenomenon of soldering tin and plastics card of dropout department, influence the product function, are difficult to satisfy customer's demand.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a surge protector's trip gear.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a tripping device of a surge protector comprises an outer shell, an inner shell arranged in the outer shell, a safety mechanism, an arc extinguishing plate, a second spring, a first metal electrode, a second metal electrode, a third metal electrode and a remote signaling switch, wherein the safety mechanism, the arc extinguishing plate, the second spring, the first metal electrode, the second metal electrode, the third metal electrode and the remote signaling switch are arranged in the inner shell, the first metal electrode comprises a first protruding pin positioned at the rear part of the first metal electrode and at least one second protruding pin positioned at the middle part of the first metal electrode, the third metal electrode and the at least one second protruding pin are fixedly connected through low-temperature welding, the third metal electrode is clamped with the safety mechanism to limit the safety mechanism, the upper section of the second metal electrode is pressed against the first protruding pin by the rear part of the safety mechanism, the middle section of the second metal electrode is provided with an inclined section connected with the upper section, and the bottom of the arc extinguishing plate is pressed against the, the top of the arc-extinguishing plate abuts against the inclined section of the second metal electrode, the safety mechanism is in contact with the remote signaling switch, and after the second protruding pin is separated from the third metal electrode, the safety mechanism can displace to separate from the remote signaling switch, and the arc-extinguishing plate can move upwards to a position between the first protruding pin and the upper section of the second metal electrode so as to realize the isolation of the upper section of the second metal electrode.

Further, safety mechanism includes ejector pin, first spring and slider, the ejector pin includes unit head and axle, the rear end of unit head support lean on in the upper portion section, the rear end of axle is connected with the front end of unit head, the front end of axle passes the slider setting, first spring housing is established epaxial and be located the unit head with between the slider.

Further, the slider includes draw-in groove and hole, the draw-in groove with the cooperation of third metal electrode realizes the joint, the axle passes the hole setting.

Further, the lower end face of the sliding block is in contact with the remote signaling switch.

Furthermore, the bottom of the arc-extinguishing plate is provided with a lower shaft, the second spring is sleeved outside the lower shaft of the arc-extinguishing plate, and the second spring and the lower shaft are arranged in a guide groove of the inner shell.

Further, still including set up in rear portion's fifth metal electrode and being located in the shell fifth metal electrode with pressure sensitive strip between the safety mechanism, fifth metal electrode pass through fastening screw with inner shell fixed connection.

Furthermore, a fifth metal electrode protruding pin is arranged at the bottom of the fifth metal electrode, and the fifth metal electrode protruding pin and the elastic arm of the fourth metal electrode are in press-connection.

Further, the inner shell is provided with rear portion fixed slot or lateral part fixed slot near the rear portion or the lateral part of fifth metal electrode protruding pin, the elastic arm of fourth metal electrode inserts rear portion fixed slot or lateral part fixed slot with fifth metal electrode protruding pin crimping together.

Furthermore, the number of the second protruding pins is 2, the third metal electrode has protruding concave structures at two ends, and the protrusions at two ends of the third metal electrode are fixedly connected with the 1 second protruding pins through low-temperature welding respectively.

Further, the second metal electrode is an elastic member.

Compared with the prior art, the utility model, it is showing the advantage and is:

(1) the tripping device of the surge protector has smaller volume and compact structure, adopts a crimping mode to replace a welding mode on the surface of the electric conductor, reduces the welding process, improves the assembly efficiency, saves the labor cost, easily realizes the automatic operation of a machine, and is suitable for mass production;

(2) the third metal electrode is fixedly connected with the second protruding pin through low-temperature welding, when the circuit is subjected to surge impact to generate large heat, the low-temperature welding part can be heated and melted, so that the safety mechanism can rapidly act, and the arc extinguishing plate can rapidly realize the separation of the first metal electrode and the second metal electrode to realize rapid and effective protection;

(3) the intelligent remote control alarm has the functions of remote signaling alarm, tripping indication alarm and the like, and meets the requirements of high integration, miniaturization and batch production of the existing industrial products.

Drawings

Fig. 1 is the front structural schematic diagram of the tripping device of the surge protector.

Fig. 2 is the reverse side structure schematic diagram of the tripping device of the surge protector.

Fig. 3 is a schematic diagram of the surge protector tripping device of the present invention under the protection state.

Fig. 4 is a schematic view of the safety mechanism of the present invention in a partially non-operating state.

Fig. 5 is a schematic view of the safety mechanism of the present invention under a protection working condition.

Fig. 6 is a schematic view of the structure of the safety mechanism according to the present invention.

Fig. 7 is a schematic view of two installation methods of the fourth metal electrode of the present invention.

Figure 8 is a schematic view of the arc-extinguishing plate of the present invention in a non-operating state.

Figure 9 is a schematic view of the arc-extinguishing plate of the present invention in a protective working state.

Fig. 10 is a schematic structural view of the second metal electrode in a normal state according to the present invention.

Fig. 11 is a schematic structural diagram of the second metal electrode of the present invention in a state of being pressed by the safety mechanism.

Fig. 12 is a schematic structural diagram of a third metal electrode according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

With reference to fig. 1 to 6, a tripping device of a surge protector comprises an outer shell 1 and an inner shell 2 arranged inside the outer shell 1, and further comprises a safety mechanism, an arc extinguishing plate 5, a second spring 8, a first metal electrode 7, a second metal electrode 9, a third metal electrode 10, and a remote signaling switch 15 arranged inside the inner shell 2, wherein the first metal electrode 7 comprises a first protruding pin 71 at the rear part thereof and at least one second protruding pin 72 at the middle part thereof, the third metal electrode 10 is fixedly connected with the at least one second protruding pin 72 by low-temperature welding, and the third metal electrode 10 is clamped with the safety mechanism to limit the safety mechanism, the rear part of the safety mechanism presses an upper section 91 of the second metal electrode 9 against the first protruding pin 71, the middle section of the second metal electrode 9 has a slope section 92 connected with the upper section 91, the bottom of the arc-extinguishing plate 5 abuts against the upper end of the second spring 8, the top of the arc-extinguishing plate 5 abuts against the inclined section 92 of the second metal electrode 9, the safety mechanism is in contact with the remote signaling switch 15, after the second protruding pin 72 is separated from the third metal electrode 10, the safety mechanism can displace to separate from the remote signaling switch 15, and the arc-extinguishing plate 5 can move upwards to the position between the first protruding pin 71 and the upper section 91 of the second metal electrode 9 to realize the isolation of the upper section 91 of the second metal electrode 9.

Further, the safety mechanism includes ejector pin 3, first spring 6 and slider 4, ejector pin 3 includes unit head 32 and axle 31, the rear end of unit head 32 support lean on in upper portion section 91, the rear end of axle 31 is connected with the front end of unit head 32, the front end of axle 31 passes slider 4 sets up, first spring 6 cover is established on axle 31 and be located unit head 32 with between the slider 4.

Further, the slider 4 includes a clamping groove 41 and a hole 42, the clamping groove 41 is matched with the third metal electrode 10 to realize clamping, and the shaft 31 passes through the hole 42.

Furthermore, the outer shell 1, the inner shell 2, the ejector rod 3, the sliding block 4 and the arc extinguishing plate 5 are made of industrial flame retardant grade insulating materials which have various shapes and impact resistance, and simultaneously ensure safe insulating electric performance between the outer shell and a circuit board and between the outer shell and adjacent electronic components in the using process of a product, so that the outer shell has good machinability and high safety and reliability.

Further, the lower end face of the slider 4 contacts the remote signaling switch 15, so that the slider 4 presses the trigger point of the remote signaling switch 15, and the remote signaling switch 15 may be an elastic metal sheet.

Further, referring to fig. 8-9, the bottom of the arc-extinguishing plate 5 has a lower shaft 51, the second spring 8 is sleeved outside the lower shaft 51 of the arc-extinguishing plate 5 (the two are in interference fit, so as to prevent the second spring from falling off), and the second spring 8 and the lower shaft 51 are disposed in a guide groove 23 of the inner housing 2. The second spring 8 and the lower shaft 51 can be guided and positioned well within the guide groove 23.

Further, with reference to fig. 2, the device further includes a fifth metal electrode 12 disposed at the rear portion in the outer shell 1 and a pressure-sensitive sheet 13 (or a discharge tube) located between the fifth metal electrode 12 and the safety mechanism, wherein the fifth metal electrode 12 is fixedly connected to the inner shell 2 through a fastening screw. The arrangement can reliably ensure the contact effect of the metal surface, and can fix the pressure-sensitive sheet (or the discharge tube) and prevent the bad problem caused by vibration.

Further, with reference to fig. 7, the bottom of the fifth metal electrode 12 has a fifth metal electrode protruding pin 121, the fifth metal electrode protruding pin 121 is pressed together with the elastic arm 111 of the fourth metal electrode 11, the rear portion or the side portion of the inner shell 2 near the fifth metal electrode protruding pin 121 is provided with a rear fixing clip groove 22 or a side fixing clip groove 21, the elastic arm 111 of the fourth metal electrode 11 is inserted into the rear fixing clip groove 22 or the side fixing clip groove 21, and the fifth metal electrode protruding pin 121 is pressed together.

Further, with reference to fig. 4-6 and 12, the number of the second protruding pins 72 is 2, the third metal electrode 10 has a protruding concave structure at two ends, and the protruding parts at two ends of the third metal electrode 10 are respectively fixedly connected with 1 second protruding pin 72 through low temperature welding.

Further, the second metal electrode 9 is an elastic member, and fig. 10 shows a structure in its normal state, and fig. 11 shows a structure in its state of being pressed in contact with the first projecting pin 71.

The working process and principle of the present invention are specifically described below:

the structure of the tripping device of the surge protector in the non-protection state is shown in fig. 1, 4 and 8, at this time, the third metal electrode 10 and the second protruding pin 72 are in the low-temperature welding fixed connection state, the third metal electrode 10 is clamped in the clamping groove 41 to limit the position of the safety mechanism, the first spring 6 is in the compression state, the rear end of the power head 32 is abutted against the upper section 91, thereby realizing the pressing contact of the upper section 91 and the first protruding pin 71, meanwhile, the upper end of the arc-extinguishing plate 5 is abutted against the inner surface of the inclined section 92 of the second metal electrode 9 to realize the limit of the arc-extinguishing plate 5, the second spring 8 is in a compressed state, fig. 6 shows a structure in which the parts of the safety mechanism are separated, and a state in which the upper section 91 and the first protruding pin 71 are crimped, a state in which the third metal electrode 10 is soldered to the second protruding pin 72, and a connection diagram of the parts of the safety mechanism can be seen;

when surge impact exists in the circuit, larger heat can be generated in a short time, so that soldering tin at the third metal electrode 10 and the second protruding pin 72 which are welded at low temperature is melted, the sliding block 4 drives the third metal electrode 10 to move rightwards together under the action of the first spring 6, the sliding block 4 is separated from a trigger point of the remote communication switch 15 and outputs a signal, meanwhile, the second metal electrode 9 can rotate to leave the first protruding pin 71 (see fig. 5) which is contacted with the second metal electrode 9 under the self elastic action, the inclined plane section 92 inclines and deflects rightwards due to the rotation of the second metal electrode 9, so that the top of the arc extinguishing plate 5 is released and is not limited by the inclined plane section 92, the arc extinguishing plate 5 moves upwards along the guide groove 23 to be between the first protruding pin 71 and the upper section 91 of the second metal electrode 9 under the action of the second spring 8, and the first metal electrode 7 and the second metal electrode 9 are isolated to play a role in extinguishing arc, the relevant structure in this state is shown in fig. 3, 5, and 9.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A tripping device of a surge protector comprises an outer shell (1) and an inner shell (2) arranged in the outer shell (1), and is characterized by further comprising a safety mechanism arranged in the inner shell (2), an arc extinguishing plate (5), a second spring (8), a first metal electrode (7), a second metal electrode (9), a third metal electrode (10) and a remote signaling switch (15), wherein the first metal electrode (7) comprises a first protruding pin (71) positioned at the rear part of the first metal electrode and at least one second protruding pin (72) positioned in the middle part of the first metal electrode, the third metal electrode (10) and the at least one second protruding pin (72) are fixedly connected through low-temperature welding, the third metal electrode (10) is clamped with the safety mechanism to limit the safety mechanism, the rear part of the safety mechanism presses an upper section (91) of the second metal electrode (9) against the first protruding pin (71), the middle section of the second metal electrode (9) is provided with a slope section (92) connected with the upper section (91), the bottom of the arc extinguishing plate (5) abuts against the upper end of the second spring (8), the top of the arc extinguishing plate (5) abuts against the slope section (92) of the second metal electrode (9), the safety mechanism is in contact with the telecommand switch (15), and after the second protruding pin (72) is separated from the third metal electrode (10), the safety mechanism can generate displacement to be separated from the telecommand switch (15), and the arc extinguishing plate (5) can move upwards to a position between the first protruding pin (71) and the upper section (91) of the second metal electrode (9) to realize the isolation of the upper section (91) of the second metal electrode (9).

2. The trip device according to claim 1, wherein the safety mechanism comprises a push rod (3), a first spring (6) and a slide block (4), the push rod (3) comprises a power head (32) and a shaft (31), the rear end of the power head (32) abuts against the upper section (91), the rear end of the shaft (31) is connected with the front end of the power head (32), the front end of the shaft (31) penetrates through the slide block (4) for arrangement, and the first spring (6) is sleeved on the shaft (31) and is located between the power head (32) and the slide block (4).

3. Trip device according to claim 2, characterized in that the slider (4) comprises a catch (41) and a hole (42), the catch (41) cooperating with the third metal electrode (10) for the purpose of catching, the shaft (31) being arranged through the hole (42).

4. Trip unit according to claim 3, characterised in that the lower end face of the slide (4) is in contact with the remote signalling switch (15).

5. Trip unit according to any of claims 1-4, wherein the bottom of the arc plates (5) has a lower shaft (51), the second spring (8) is arranged outside the lower shaft (51) of the arc plates (5), and the second spring (8) and the lower shaft (51) are arranged in a guide groove (23) of the inner housing (2).

6. The trip device according to claim 5, characterized in that, further comprising a fifth metal electrode (12) arranged at the rear part in the outer casing (1) and a pressure sensitive sheet (13) positioned between the fifth metal electrode (12) and the safety mechanism, wherein the fifth metal electrode (12) is fixedly connected with the inner casing (2) through a fastening screw.

7. Trip unit according to claim 6, characterised in that the bottom of the fifth metal electrode (12) has a fifth metal electrode protruding pin (121), which fifth metal electrode protruding pin (121) is crimped together with the resilient arm (111) of the fourth metal electrode (11).

8. The trip device according to claim 7, wherein a rear fixing clip groove (22) or a side fixing clip groove (21) is arranged at the rear part or the side part of the inner shell (2) close to the fifth metal electrode projecting pin (121), and the elastic arm (111) of the fourth metal electrode (11) is inserted into the rear fixing clip groove (22) or the side fixing clip groove (21) and is pressed with the fifth metal electrode projecting pin (121).

9. The trip device according to claim 1, wherein the number of the second protruding pins (72) is 2, the third metal electrode (10) has a concave structure with two protruding ends, and the two protruding ends of the third metal electrode (10) are fixedly connected with the 1 second protruding pins (72) by low-temperature welding.

10. Trip unit according to claim 1, characterised in that the second metal electrode (9) is an elastic part.