CN108666181B - Tripping mechanism and surge protection device with same - Google Patents
Tripping mechanism and surge protection device with same Download PDFInfo
- Publication number
- CN108666181B CN108666181B CN201810402341.XA CN201810402341A CN108666181B CN 108666181 B CN108666181 B CN 108666181B CN 201810402341 A CN201810402341 A CN 201810402341A CN 108666181 B CN108666181 B CN 108666181B
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- CN
- China
- Prior art keywords
- insulating
- piece
- connecting electrode
- conductive
- melted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 18
- 230000004907 flux Effects 0.000 claims abstract description 13
- 238000004146 energy storage Methods 0.000 claims abstract description 5
- 229910000679 solder Inorganic materials 0.000 claims description 29
- 238000000605 extraction Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/122—Automatic release mechanisms with or without manual release actuated by blowing of a fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/20—Electrothermal mechanisms with fusible mass
Landscapes
- Breakers (AREA)
- Fuses (AREA)
Abstract
The invention discloses a tripping mechanism and a surge protection device with the same, wherein the tripping mechanism is used for disconnecting or electrically leading out a connecting electrode, the tripping mechanism comprises an insulating part with an insulating part, a conductive part electrically connected with the connecting electrode and electrically leading out the connecting electrode, welding flux which is heated and fused and electrically connected with the connecting electrode and the conductive part when the welding flux is not fused, and an elastic part which is connected with one end of the insulating part and drives the insulating part of the insulating part to slide between the connecting electrode and the conductive part after the welding flux is fused so as to disconnect the electrical connection between the connecting electrode and the conductive part, and the elastic part is in an energy storage state when the welding flux is not fused. The invention has the advantages of quick action, simple structure, high reliability and the like when the connection between the electrical equipment and the circuit is cut off.
Description
Technical Field
The invention relates to the field of electrical equipment, in particular to a tripping mechanism and a surge protection device with the tripping mechanism.
Background
Currently, trip mechanisms are commonly used to break electrical circuit connections of electrical devices to protect the electrical devices from lightning or overvoltage damage.
However, the conventional tripping mechanism sometimes does not truly disconnect the electrical equipment from the power grid. When overvoltage exists, the voltage numbers at two ends of the electric equipment are multiplied greatly, and the electric equipment is damaged.
Disclosure of Invention
The invention aims to provide a tripping mechanism, which aims to solve the problem of low reliability when the conventional tripping mechanism cuts off the circuit connection of electrical equipment.
The invention is realized in that the tripping mechanism is used for disconnecting or electrically leading out the connecting electrode, and comprises an insulating part with an insulating part, a conductive part electrically connected with the connecting electrode and electrically leading out the connecting electrode, welding flux which is melted after being heated and electrically connected with the connecting electrode and the conductive part when the welding flux is not melted, and an elastic part which is connected with one end of the insulating part and drives the insulating part of the insulating part to slide between the connecting electrode and the conductive part after the welding flux is melted so as to disconnect the electrical connection between the connecting electrode and the conductive part, wherein the elastic part is in an energy storage state when the welding flux is not melted.
Further, the tripping mechanism further comprises a shell with a containing cavity, and the solder, the insulating piece and the elastic piece are located in the containing cavity.
Further, the conductive member includes a connection section electrically connected with the connection electrode, an extraction section fixed to an outer cavity wall of the accommodating cavity to electrically extract the connection electrode, and a guide section connecting the connection section with the extraction section and used for guiding the insulating member to slide into between the connection electrode and the connection section when the solder is melted.
Further, the tripping mechanism further comprises a rotating shaft which is positioned at one side of the conductive piece and is fixed at the bottom of the accommodating cavity; the insulating piece comprises a first end pivotally connected with the rotating shaft and a second end connected with the elastic piece, and the second end abuts against the conductive piece when the solder is not melted.
Further, the tripping mechanism further comprises strip-shaped protruding portions which are arranged at the bottom of the accommodating cavity, are used for slidably supporting the second end and are arranged in an arc shape, and the strip-shaped protruding portions and the rotating shaft are respectively located at two sides of the conductive piece.
Further, a chute for guiding the insulating piece to slide on the strip-shaped convex part is formed in the surface of the insulating piece, which faces the strip-shaped convex part, and the shape of the chute is matched with that of the strip-shaped convex part.
Further, the insulating piece is further provided with a clamping groove for clamping the elastic piece, and the clamping groove and the sliding groove are respectively positioned on the two side surfaces of the insulating piece.
Further, a rotating hole for pivotally connecting the rotating shaft is formed in the elastic piece, one end of the elastic piece is fixed to the cavity wall of the accommodating cavity, and the other end of the elastic piece is clamped in the clamping groove.
Further, the melting point of the solder is less than 200 degrees.
Compared with the prior art, the invention has the technical effects that: the tripping mechanism is connected to a circuit of the electrical equipment through the conductive piece and the connecting electrode, and the solder is welded and electrically connected with the conductive piece and the connecting electrode when the solder is not melted. When the voltage in the circuit is too high, the current through the solder increases accordingly. The solder continues to heat under Joule's law, eventually bringing the temperature of the solder to its melting point. After the solder is melted, the elastic member drives the insulating member to slide, so that the insulating portion of the insulating member is located between the conductive member and the connection electrode. Thereby cutting off the circuit connection of the electric device, and the stability and reliability thereof are high.
Drawings
Fig. 1 is a schematic structural diagram of three tripping mechanisms provided in the embodiment of the present invention in a Y-shaped arrangement.
Fig. 2 is a top view of the trip mechanism of fig. 1.
Fig. 3 is a schematic structural view of a housing of the trip mechanism of fig. 1.
Fig. 4 is a schematic structural view of a conductive member of the trip mechanism of fig. 1.
Fig. 5 is a schematic structural view of an insulator of the trip mechanism of fig. 1.
Fig. 6 is a schematic structural view of an elastic member of the trip mechanism of fig. 1.
Fig. 7 is a schematic structural diagram of a connection electrode according to an embodiment of the present invention.
The correspondence between the reference numbers and names in the drawings is as follows:
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "vertical," "parallel," "bottom," "angular," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements.
Referring to fig. 1 to 3, the trip mechanism 100 provided in the embodiment of the invention has the characteristics of simple structure, high reliability and the like. The embodiment of the invention also provides a surge protection device (not shown) with the tripping mechanism 100. The trip mechanism 100 is used in conjunction with a surge protection device to protect electrical equipment from over-voltage.
Referring also to fig. 7, the trip mechanism 100 is electrically connected to a connection electrode 31 of the surge protection device and electrically led out of the connection electrode 31, and both the surge protection device and the trip mechanism 100 are connected to an external circuit.
The trip mechanism 100 includes an insulating member 22 having an insulating portion, a conductive member 21 electrically connected to the connecting electrode 31 and electrically led out of the connecting electrode 31, a solder (not shown) melted after being heated and electrically connected to the connecting electrode 31 and the conductive member 21 when not melted, and an elastic member 23 connected to one end of the insulating member 22 and driving the insulating portion of the insulating member 22 to slide between the connecting electrode 31 and the conductive member 21 after the solder is melted to disconnect the electrical connection between the connecting electrode 31 and the conductive member 21. The elastic member 23 is in an energy storage state when the solder is not melted. The insulating member 22 is a fan-shaped insulating member made of an insulating material, which may be an organic insulating material, an inorganic insulating material, or a mixed insulating material. In one aspect of this embodiment, the solder has a melting point less than 200 degrees and may be an environmentally friendly solder.
The trip mechanism 100 is connected to a circuit of an electric device through the conductive member 21 and the connection electrode 31, and the solder is soldered and electrically conducts the conductive member 21 and the connection electrode 31 when it is not melted. When the voltage in the circuit is too high, the current flowing through the solder increases accordingly. According to Joule's law, the solder continues to heat, eventually bringing the temperature of the solder to its melting point. After the solder is melted, the elastic member 23 drives the insulating member 22 to slide, so that the insulating portion of the insulating member 22 is located between the conductive member 21 and the connection electrode 31. Thus cutting off the circuit connection of the electrical equipment, the invention has high stability and reliability.
The trip mechanism 100 further includes a housing 10 having a receiving cavity 11, and the solder, the insulating member 22, and the elastic member 23 are disposed in the receiving cavity 11. The bottom of the accommodating cavity 11 is provided with a connecting hole 1121, and the connecting electrode 31 is electrically connected with the conductive member 21 through the connecting hole 1121.
Referring to fig. 4 to 6, the conductive member 21 includes a connection section 211 electrically connected to the connection electrode 31, an extraction section 213 fixed to the outer wall of the accommodating cavity 11 to electrically extract the connection electrode 31, and a guiding section 212 connecting the connection section 211 and the extraction section 213 and guiding the insulating member 22 to slide between the connection electrode 31 and the connection section 211 when the solder is melted. The surface of the connection electrode 31 is convexly provided with a welding head 311, and the welding head 311 is electrically connected with the connection section 211 and welded. Two fixing columns (not shown) are arranged on the outer cavity wall of the accommodating cavity 11 of the shell 10 at intervals, two fixing holes (not shown) matched with the fixing columns are formed in the leading-out section 213, and the leading-out section 213 is connected with the shell 10 through the matching of the fixing holes and the fixing columns. The guiding section 212 is inclined towards the bottom of the accommodating cavity 11, and after the solder is melted, the insulating member 22 can be guided to slide between the connecting section 211 and the welding head 311, and the guiding section 212 can also drive the connecting section 211 to move towards the direction away from the welding head 311, so that the separation of the welding head 311 and the connecting section 211 is facilitated. Further improving the reliability of the operation of the trip mechanism 100.
The trip mechanism 100 further includes a rotating shaft 24 located at one side of the conductive member 21 and fixed to the bottom of the accommodating cavity 11.
Referring to fig. 5, the insulating member 22 includes a first end 221 pivotally connected to the rotating shaft 24 and a second end 222 connected to the elastic member 23, and the second end 222 abuts against the conductive member 21 when the solder is not melted. The first end 221 of the insulating member 22 is provided with a pivot hole 223 connected to the rotating shaft 24, and the insulating member 22 can rotate around the rotating shaft 24 through the pivot hole 223, so that the connection section 211 and the connection electrode 31 can be electrically isolated.
The trip mechanism 100 further includes a bar-shaped protrusion 1122 disposed at the bottom of the accommodating cavity 11 and configured to slidably support the second end 222 and arranged in an arc shape, where the bar-shaped protrusion 1122 and the rotating shaft 24 are respectively located at two sides of the conductive member 21. The surface of the insulating member 22 facing the strip-shaped protrusion 1122 is provided with a chute (not shown) for guiding the insulating member 22 to slide on the strip-shaped protrusion 1122, and the shape of the chute is adapted to the shape of the strip-shaped protrusion 1122. By the cooperation of the strip-shaped protrusions 1122 and the sliding grooves, the insulating member 22 slides stably in the accommodating cavity 11 and can accurately and electrically isolate the connecting electrode 31 from the conductive member 21, thereby improving the reliability of the tripping mechanism 100.
Referring to fig. 5, the insulating member 22 is further provided with a clamping groove 224 for clamping the elastic member 23, and the clamping groove 224 and the sliding groove are respectively located on two side surfaces of the insulating member 22.
Referring to fig. 6, the elastic member 23 is provided with a rotation hole 233 for pivotally connecting the rotation shaft 24, one end of the elastic member 23 is fixed on the wall of the accommodating cavity 11, and the other end of the elastic member 23 is clamped in the clamping groove 224. The catching groove 224 is arranged in the radial direction of the insulator 22 and communicates with the pivot hole 223 of the insulator 22. In one aspect of this embodiment, the elastic member 23 is a torsion spring, and the torsion spring is rotatable about the rotation shaft 24 through a rotation hole 233 in the center.
Referring to fig. 3, the wall of the accommodating cavity 11 is provided with a fixing groove 14 with an L-shaped cross section. The short end 231 of the torsion spring is radially fixed in the fixing groove 14, and the long end 232 of the torsion spring is fixed in the clamping groove 224. Under compression of the insulator 22, the torsion spring may be placed in an energy storage state without melting the solder.
The tripping mechanism 100 provided by the invention has the advantages of simple structure, rapid action, high reliability, good stability and the like. The trip mechanism 100 can be prevented from being disabled, deactivated or slowed down, resulting in low reliability and damage to the electrical system.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. A trip mechanism for disconnecting or electrically extracting a connection electrode, characterized in that: the tripping mechanism comprises an insulating part, a conductive part, a welding flux and an elastic part, wherein the insulating part is provided with an insulating part, the conductive part is electrically connected with the connecting electrode and electrically leads out the connecting electrode, the welding flux is melted after being heated and is electrically connected with the connecting electrode and the conductive part when the welding flux is not melted, the insulating part is connected with one end of the insulating part and drives the insulating part of the insulating part to slide between the connecting electrode and the conductive part after the welding flux is melted so as to disconnect the electrical connection between the connecting electrode and the conductive part, and the elastic part is in an energy storage state when the welding flux is not melted;
the tripping mechanism further comprises a shell with a containing cavity, wherein the solder, the insulating piece and the elastic piece are positioned in the containing cavity;
the tripping mechanism further comprises a rotating shaft which is positioned at one side of the conductive piece and is fixed at the bottom of the accommodating cavity; the insulating piece comprises a first end pivotally connected with the rotating shaft and a second end connected with the elastic piece, and the second end is abutted against the conductive piece when the solder is not melted;
the conductive piece comprises a connecting section electrically connected with the connecting electrode, an extraction section fixed on the outer cavity wall of the accommodating cavity so as to electrically extract the connecting electrode, and a guide section which is connected with the connecting section and the extraction section and is used for guiding the insulating piece to slide into the space between the connecting electrode and the connecting section when the solder is melted;
the tripping mechanism further comprises a strip-shaped convex part which is arranged at the bottom of the accommodating cavity, is used for supporting the second end in a sliding manner and is arranged in an arc shape, and the strip-shaped convex part and the rotating shaft are respectively positioned at two sides of the conductive piece;
the surface of the insulating part, which faces the strip-shaped convex part, is provided with a chute for guiding the insulating part to slide on the strip-shaped convex part, and the shape of the chute is matched with the shape of the strip-shaped convex part;
the insulating piece is also provided with a clamping groove for clamping the elastic piece, and the clamping groove and the sliding groove are respectively positioned on the surfaces of the two sides of the insulating piece;
the elastic piece is provided with a rotating hole for pivotally connecting the rotating shaft, one end of the elastic piece is fixed on the cavity wall of the accommodating cavity, and the other end of the elastic piece is clamped in the clamping groove; the first end of the insulating piece is provided with a pivot hole connected with the rotating shaft, and the insulating piece rotates around the rotating shaft through the pivot hole so as to electrically isolate the connecting section from the connecting electrode.
2. The trip mechanism of claim 1, wherein: the melting point of the solder is less than 200 degrees.
3. A surge protection device, comprising: the trip mechanism of any one of claims 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402341.XA CN108666181B (en) | 2018-04-28 | 2018-04-28 | Tripping mechanism and surge protection device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402341.XA CN108666181B (en) | 2018-04-28 | 2018-04-28 | Tripping mechanism and surge protection device with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108666181A CN108666181A (en) | 2018-10-16 |
| CN108666181B true CN108666181B (en) | 2024-03-15 |
Family
ID=63781488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810402341.XA Active CN108666181B (en) | 2018-04-28 | 2018-04-28 | Tripping mechanism and surge protection device with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108666181B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202282310U (en) * | 2011-11-07 | 2012-06-20 | 施耐德电器工业公司 | Tripping mechanism of surge protection device and surge protection device |
| CN103580019A (en) * | 2012-08-09 | 2014-02-12 | 菲尼克斯亚太电气（南京）有限公司 | Surge protection device for circuit board |
| CN203553884U (en) * | 2013-10-16 | 2014-04-16 | 广州市意普孚电子科技有限公司 | A voltage limiting type current surge safety device |
| CN105448611A (en) * | 2015-12-31 | 2016-03-30 | 德力西电气有限公司 | Thermal separation mechanism and surge protection device |
| CN107039960A (en) * | 2016-02-03 | 2017-08-11 | 广西南宁百兰斯科技开发有限公司 | One kind masking insulated type surge protection device |
| CN107800126A (en) * | 2016-09-07 | 2018-03-13 | 深圳康普盾科技股份有限公司 | Power source surge protector thermal tripping arc-control device and its method |
| CN208157340U (en) * | 2018-04-28 | 2018-11-27 | 深圳市海鹏信电子股份有限公司 | A kind of tripping mechanism and the surge protection device with it |
-
2018
- 2018-04-28 CN CN201810402341.XA patent/CN108666181B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202282310U (en) * | 2011-11-07 | 2012-06-20 | 施耐德电器工业公司 | Tripping mechanism of surge protection device and surge protection device |
| CN103580019A (en) * | 2012-08-09 | 2014-02-12 | 菲尼克斯亚太电气（南京）有限公司 | Surge protection device for circuit board |
| CN203553884U (en) * | 2013-10-16 | 2014-04-16 | 广州市意普孚电子科技有限公司 | A voltage limiting type current surge safety device |
| CN105448611A (en) * | 2015-12-31 | 2016-03-30 | 德力西电气有限公司 | Thermal separation mechanism and surge protection device |
| CN107039960A (en) * | 2016-02-03 | 2017-08-11 | 广西南宁百兰斯科技开发有限公司 | One kind masking insulated type surge protection device |
| CN107800126A (en) * | 2016-09-07 | 2018-03-13 | 深圳康普盾科技股份有限公司 | Power source surge protector thermal tripping arc-control device and its method |
| CN208157340U (en) * | 2018-04-28 | 2018-11-27 | 深圳市海鹏信电子股份有限公司 | A kind of tripping mechanism and the surge protection device with it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108666181A (en) | 2018-10-16 |
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