CN105610139B - Surge protector adopting box-type fastening assembly structure - Google Patents
Surge protector adopting box-type fastening assembly structure Download PDFInfo
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- CN105610139B CN105610139B CN201610029140.0A CN201610029140A CN105610139B CN 105610139 B CN105610139 B CN 105610139B CN 201610029140 A CN201610029140 A CN 201610029140A CN 105610139 B CN105610139 B CN 105610139B
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- clamping plate
- assembly structure
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- electrode
- fastening assembly
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- Thermistors And Varistors (AREA)
Abstract
The invention provides a surge protector adopting a box-type fastening assembly structure, which comprises an insulating box body, at least one tripping electrode plate, at least one MOV chip and an upper electrode clamping plate which are alternately arranged, wherein the at least one tripping electrode plate, the at least one MOV chip and the upper electrode clamping plate are fixed in the insulating box body through fasteners, and the bottom of the insulating box body is in compression joint with the tripping electrode plate. An insulating rubber sleeve is arranged outside the MOV chip, or an insulating rubber layer is encapsulated in the box type fastening assembly structure. The surge protector adopting the box-type fastening assembly structure does not need welding and cleaning, saves labor, time, protects environment, has good heat dissipation performance, reliable tripping and high assembly efficiency.
Description
Technical Field
The invention relates to the technical field of surge protector assembly, in particular to a surge protector adopting a box-type fastening assembly structure.
Background
The conventional voltage-limiting Surge Protector (SPD) has special nonlinear current-voltage characteristics. Mainly comprises a passive electronic component MOV (Metal Oxide Varistors) chip assembly. When abnormal conditions occur, such as lightning strike, electromagnetic field interference, frequent action of a power switch, power system failure and the like, so that voltage on a line suddenly increases and exceeds the conducting voltage of a Surge Protector (SPD), the line enters a conducting area, and the current (I) and the voltage (V) have a nonlinear relation, generally called nonlinear coefficient (nonlinear Parameter), and the value of the nonlinear coefficient can reach dozens or hundreds. At this time, the impedance of the Surge Protector (SPD) becomes low, and has only a few ohms, so that the overvoltage forms a surge current to flow out, thereby protecting the connected electronic product or expensive components.
With the rapid development of clean energy technology, the popularization of high-speed rails and the wide application of electronic machinery (such as robots, manipulators and the like), the application demand of Surge Protectors (SPDs) is also gradually increasing. In an assembly structure of a conventional Surge Protector (SPD) device, an MOV chip needs to be processed by four or five procedures of welding an extraction electrode on two sides, cleaning, encapsulating, boxing, encapsulating and the like, and the production consumes time and energy and is not environment-friendly; the assembled parts have no positioning and orientation, are easy to be assembled by mistake and have high assembly requirements; the heat dissipation performance is to be improved, thereby resulting in a decrease in reliability.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the surge protector which is free from welding and cleaning, saves labor and time, is environment-friendly, has good heat dissipation performance, reliable tripping and high assembly efficiency and adopts a box-type fastening assembly structure.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the invention provides a surge protector adopting a box-type fastening assembly structure, which comprises an insulating box body, at least one tripping electrode plate, at least one MOV chip and an upper electrode clamping plate which are alternately arranged, wherein the at least one tripping electrode plate, the at least one MOV chip and the upper electrode clamping plate are fixed in the insulating box body through fasteners, and the bottom of the insulating box body is attached to the tripping electrode plate.
Further, the bottom of the inner cavity of the insulating box body is provided with a fixing stud which is used for being matched with the fastener to fix the at least one tripping electrode plate, the at least one MOV chip and the upper electrode clamping plate.
Further, an insulating rubber sleeve is arranged outside the MOV chip. The insulating rubber sleeve is sleeved into the periphery of the MOV chip through a middle hole, and the middle hole of the insulating rubber sleeve is equal to or slightly smaller than the diameter of the MOV chip, so that the rubber sleeve tightly hoops the chip, and the edge protection effect is obtained.
Further, the at least one tripping electrode plate, the at least one MOV chip and the upper electrode clamping plate are fixed in the insulating box body to form a box-type fastening assembly structure, and an insulating glue layer is encapsulated in the box-type fastening assembly structure in vacuum.
Furthermore, at least one lead-out pin is led out from each of the trip electrode plate and the upper electrode clamping plate, and the lead-out pins are axially or radially led out.
Furthermore, a through hole for leading out the lead-out pin of the tripping electrode plate axially or radially is formed in the side wall or the bottom of the insulating box body, and when the lead-out pin of the upper electrode clamping plate is axially led out, a lead-out through hole corresponding to the lead-out pin of the upper electrode clamping plate is also formed in the side wall of the insulating box body.
Furthermore, a through hole or a threaded hole for the fastener to pass through is formed in the upper electrode clamping plate, the position of the fixing stud corresponds to the position of the through hole or the threaded hole in the upper electrode clamping plate, and a cavity or an internal thread cavity for the fastener to be embedded and matched is formed in the fixing stud.
Further, the fastener is a metal or nonmetal rivet or screw, and the length of the fastener is not more than the thickness from the upper electrode clamping plate to the bottom of the insulating box body.
Further, the tripping electrode plate is an aluminum electrode plate, a copper electrode plate, a ferroelectric electrode plate or an aluminum alloy electrode plate, a copper alloy electrode plate or an iron alloy electrode plate; the upper electrode clamping plate is an aluminum clamping plate, a copper clamping plate, an iron clamping plate or an aluminum alloy clamping plate, a copper alloy clamping plate or an iron alloy clamping plate.
Furthermore, the surge protector adopting the box-type fastening assembly structure is sleeved with the outer shell or the outer cover to realize modularization, and further, the surge protector is matched with the base to realize modularization, and further, the surge protector is integrated with the base.
The surge protector adopting the box-type fastening assembly structure has the beneficial effects that:
(1) the side wall or the bottom of the insulating box body is provided with the through hole for leading out the leading-out pins of the tripping electrode and the upper electrode clamping plate, so that the assembly part is positioned and oriented, the misassembly is avoided, and the assembly requirement is reduced;
(2) the surge protector adopting the box-type fastening assembly structure does not need to be welded and cleaned, so that the labor, the time and the environment are saved;
(3) the tripping electrode plate and the upper electrode plate form a double-sided heat dissipation structure, so that the utilization rate of the MOV chip is greatly improved; the double-sided heat dissipation structure also improves the power frequency tolerance of the MOV chip, increases the safety of a Surge Protector (SPD) and improves the tripping reliability;
(4) the installation is simple swift, raises the efficiency, can realize mechanized automatic assembly.
Drawings
Fig. 1a is an exploded view of a first embodiment of a surge protector employing a cartridge-type fastening assembly structure according to the present invention;
fig. 1b is a schematic sectional view (bent extraction electrode) of a first embodiment of the surge protector of the present invention employing a box-type fastening assembly structure;
fig. 2a is an exploded view of a second embodiment of the surge protector of the present invention employing a cartridge-type fastening assembly;
fig. 2b is a schematic sectional view of the assembly potting of the surge protector of the second embodiment of the present invention using the box-type fastening assembly structure (bending the lead-out electrode);
fig. 2c is an assembled example view of a second embodiment of the surge protector employing the cartridge-type fastening assembly structure of the present invention;
fig. 3a and 3b respectively show schematic front and back surfaces of two structures of the trip electrode sheet;
FIG. 3c is a schematic cross-sectional view assembled with an axial extraction electrode;
fig. 4a is an exploded view of a third embodiment of the surge protector of the present invention employing a cartridge-type fastening assembly;
fig. 4b is an assembled example view of a surge protector employing a cassette fastening assembly structure according to a third embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are for reference and illustrative purposes only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1a and 1b, an embodiment of the present invention provides a surge protector adopting a box-type fastening assembly structure, which comprises an insulating box body 1, wherein the bottom of the insulating box body is arranged at about two thirds of the total height of the insulating box body 1, so that the insulating box body is divided into two parts, an MOV chip 3 is arranged on one deep side of the box body, a tripping device is arranged on one shallow side of the box body, a through hole for a tripping electrode sheet 2 is arranged at the bottom of the shared insulating box body 1, four hollow fixing studs 1-2 are arranged at four corners of the insulating box body for mounting the chip, a tripping electrode 2-1 of the tripping electrode sheet 2 is extended out of the through hole 1-4 at the bottom of the insulating box body 1, the plane of the tripping electrode is attached to the protruding point 1-3 at the bottom of the insulating box body, the other side is attached to one side of the MOV chip 3, one side of an upper electrode clamp plate 5 is pressed to the other, at least one tripping electrode plate 2, an MOV chip 3 and an upper electrode clamping plate 5 are fastened in the insulating box body.
In this embodiment, the surge protector adopting the box-type fastening assembly structure is provided with one trip electrode plate 2 and one MOV chip 3, and a plurality of trip electrode plates 2 or a plurality of MOV chips 3 can be arranged according to the structural setting requirements, so that the equivalent circuit of the surge protector is a single-piece two-electrode structure, a two-piece parallel two-electrode structure, a two-piece three-electrode common-mode structure, a three-piece three-electrode angular structure, a four-piece double-parallel three-electrode structure, a three-piece five-electrode structure, a four-piece five-electrode double-trip structure, and the like. The MOV chip 2 is also called a valve plate.
In this embodiment, an insulating rubber sleeve 4 is provided outside the MOV chip 3, and a hole 4-1 for housing the MOV chip 3 is provided in the insulating rubber sleeve 4.
At least one lead-out pin is led out from the tripping electrode slice 2 and the upper electrode clamping plate 5 respectively, and the lead-out pins are led out axially or radially. In this embodiment, the leading-out pins 2-1 and 5-2 are respectively led out from the trip electrode plate 2 and the upper electrode clamping plate 5, the leading-out pin 2-1 of the trip electrode plate 2 is bent and then led out vertically and radially, and the leading-out pin 5-1 of the upper electrode clamping plate 5 is also bent and then led out vertically and radially. Fig. 3a and 3b respectively show schematic diagrams of the front and back surfaces (A, B surfaces) of two structures of the trip electrode sheet 2. The leading-out pin of the trip electrode sheet 2 can be a raised platform as shown in fig. 3b, or a plane which is folded and is vertical to the trip electrode sheet as shown in fig. 3 a. FIG. 3c is a schematic cross-sectional view assembled with an axially lead-out electrode pin;
in this embodiment, through holes 1 to 4 for leading out the lead-out pins of the trip electrode sheet 2 are formed in the bottom of the insulating box body 1, and through holes 1 to 5 for leading out the lead-out pins 5 to 2 of the upper electrode clamp plate 5 are formed in the side wall of the insulating box body 1. When the leading-out pin 2-1 of the tripping electrode plate 2 is axially led out, a through hole for the leading-out pin of the tripping electrode plate to be axially led out is formed in the side wall of the insulating box body.
The upper electrode clamping plate 5 is provided with a through hole or a threaded hole 5-1 for the fastener 6 to pass through, and the insulating box body 1 is internally provided with a fixing stud 1-2 corresponding to the through hole or the threaded hole 5-1 arranged on the upper electrode clamping plate 5. In this embodiment, four through holes 5-1 are formed at four corners of the upper electrode clamp plate 5, and four fixing studs 1-2 are correspondingly formed at four inner corners of the insulating box body 1, so that screws, upper rivets or hot-pressing flanges can be conveniently screwed, riveted or turned over.
The fastener 6 is a metal or non-metal rivet or screw, and the length of the fastener 6 is not more than the height from the upper plane of the upper electrode clamping plate 5 to the bottom of the insulating box body 1.
The trip electrode plate 2 is an aluminum electrode plate, a copper electrode plate, a ferroelectric electrode plate or an aluminum alloy electrode plate, a copper alloy electrode plate or an iron alloy electrode plate; the upper electrode clamping plate 5 is an aluminum clamping plate, a copper clamping plate, an iron clamping plate or an aluminum alloy clamping plate, a copper alloy clamping plate or an iron alloy clamping plate.
In this embodiment, the surge protector with the box-type fastening assembly structure is sleeved on the outer shell or the outer cover to realize modularization, or is matched with the base to realize modularization, or is integrated with the module base.
Specifically, after the box fastening assembly structure is assembled, the other part of the box is turned over by a conventional process: and welding the tripping pins, inserting and pulling out the pins or leading out the pins, installing a tripping device, sleeving an outer box or covering an upper cover, and inserting the outer box into the base to form a complete surge protector module.
Example 2
The present embodiment is different from embodiment 1 in that:
as shown in fig. 2a, 2b and 2c, the trip electrode sheet 2, the MOV chip 3 and the upper electrode clamping plate 5 are fixed in the insulating box 1 to form a box-shaped fastening assembly structure, and an insulating glue layer 70 is encapsulated on the top of the box-shaped fastening assembly structure, as shown in fig. 2 b. The bottom of the insulating box body is additionally provided with four protruding points 1-3 which are uniformly distributed and have consistent height, and the height is set for ensuring the flow of the pouring sealant.
The insulating adhesive layer 70 is formed by encapsulating epoxy resin, phenolic resin, silica gel material and the like.
The assembly process of the surge protector adopting the box-type fastening assembly structure in the above embodiment of the present invention is as follows:
the surface of the electrode plate 2 with the leading-out pin 2-1 faces the bottom of the insulating box body 1, so that the electrode plate 2 is closely attached to the bottom protruding point 1-3 of the insulating box body 1 for positioning, and at the moment, the leading-out pin 2-1 of the electrode plate 2 naturally extends out of the through hole 1-4 in the middle of the bottom of the box. The extraction electrode 5-2 on the upper electrode plate 5 is opposite to the through hole 1-5 on the side wall of the insulating box body 1, screws or rivets 6 are penetrated through the through holes 5-1 at the four corners of the upper electrode splint 5 and are fastened in the holes of the four studs 1-2 at the bottom of the insulating box body 1, and the studs 1-2 can be softened by a hot pressing method to be flat and flat to compress the installed parts to finish the installation.
Example 3
As shown in fig. 4a and 4b, the difference between this embodiment and the above two embodiments is that the insulating box 1 is not divided into two parts, and a deep insulating box is used to assemble the same surface, and the assembly process of the surge protector using the box-type fastening assembly structure of the embodiment of the present invention is as follows: aligning notches on two sides of a lead-out pin 2-2 of a tripping electrode plate 2 to a clamping groove 1-6 on an insulating box body 1 for clamping, enabling the bottom surface of the tripping electrode plate 2 to be tightly attached to protruding points 1-3 on the bottom of the insulating box body 1, placing an MOV chip, covering an upper electrode clamping plate 5, penetrating screws or rivets 6 through four corner through holes 5-1 of the upper electrode clamping plate 5, fastening the screws or rivets in holes of four studs 1-2 on the bottom of the insulating box body 1, aligning notches on two sides of a lead-out electrode 7 to a clamping groove 1-7 on the insulating box body 1 for clamping, naturally pressing a welding point on the lead-out electrode 7 on a protruding plane 5-2 on the upper electrode clamping plate 5 at the moment, welding according to a conventional process, encapsulating, installing a tripping device, covering an upper. The greatest difference between the implementation and the second example is that the tripping salient point moves upwards from the tripping electrode slice to the upper electrode clamping plate.
The above-described fastening assembly method of the surge protector module of the present invention can be used not only in the above-described embodiments, but also in TPMOV, TMOV, and other products.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention.
Claims (7)
1. The utility model provides an adopt surge protector of box-type fastening package assembly which characterized in that: the trip electrode plate, the MOV chip and the upper electrode clamping plate are fixed in the insulating box body through fasteners, and the bottom of the insulating box body is attached to the trip electrode plate; the bottom of the inner cavity of the insulating box body is provided with a fixing stud which is used for being matched with the fastener to fix the at least one tripping electrode plate, the at least one MOV chip and the upper electrode clamping plate;
the upper electrode clamping plate is provided with a through hole or a threaded hole for the fastener to pass through, the position of the fixing stud corresponds to the position of the through hole or the threaded hole on the upper electrode clamping plate, and the fixing stud is provided with a cavity or an internal thread cavity for the fastener to be embedded and matched.
2. The surge protector using a cartridge type fastening assembly structure according to claim 1, wherein: an insulating rubber sleeve is sleeved outside the MOV chip.
3. The surge protector using a cartridge type fastening assembly structure according to claim 1, wherein: the at least one tripping electrode plate, the at least one MOV chip and the upper electrode clamping plate are fixed in the insulating box body to form a box-type fastening assembly structure, and an insulating adhesive layer is encapsulated in the box-type fastening assembly structure in a vacuum mode.
4. The surge protector using a cartridge fastening assembly structure according to claim 1, wherein: at least one lead-out pin is led out from each of the tripping electrode slice and the upper electrode clamping plate, and the lead-out pins are axially or radially led out.
5. The surge protector using a cartridge type fastening assembly structure according to claim 4, wherein: and when the lead-out pin of the upper electrode clamping plate is axially led out, the side wall of the insulation box body is also provided with a lead-out through hole corresponding to the lead-out pin of the upper electrode clamping plate.
6. The surge protector using a cartridge type fastening assembly structure according to claim 1, wherein: the fastener is a metal or nonmetal rivet or screw, and the length of the fastener is not more than the thickness from the upper electrode clamping plate to the bottom of the insulating box body.
7. The surge protector using a cartridge type fastening assembly structure according to claim 1, wherein: the tripping electrode plate is an aluminum electrode plate, a copper electrode plate, a ferroelectric electrode plate or an aluminum alloy electrode plate, a copper alloy electrode plate and an iron alloy electrode plate; the upper electrode clamping plate is an aluminum clamping plate, a copper clamping plate, an iron clamping plate or an aluminum alloy clamping plate, a copper alloy clamping plate or an iron alloy clamping plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610029140.0A CN105610139B (en) | 2016-01-15 | 2016-01-15 | Surge protector adopting box-type fastening assembly structure |
| PCT/CN2016/086952 WO2017121074A1 (en) | 2016-01-15 | 2016-06-23 | Surge protector using box-type fastening assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610029140.0A CN105610139B (en) | 2016-01-15 | 2016-01-15 | Surge protector adopting box-type fastening assembly structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105610139A CN105610139A (en) | 2016-05-25 |
| CN105610139B true CN105610139B (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610029140.0A Active CN105610139B (en) | 2016-01-15 | 2016-01-15 | Surge protector adopting box-type fastening assembly structure |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017121074A1 (en) * | 2016-01-15 | 2017-07-20 | 隆科电子(惠阳)有限公司 | Surge protector using box-type fastening assembly structure |
| CN107424692A (en) * | 2016-10-14 | 2017-12-01 | 隆科电子(惠阳)有限公司 | A kind of MOV components with insulation carrying plate structure |
| CN106782957B (en) * | 2017-01-17 | 2019-05-17 | 隆科电子(惠阳)有限公司 | A kind of compound MOV component with discharging structure |
| WO2018152756A1 (en) * | 2017-02-21 | 2018-08-30 | 隆科电子(惠阳)有限公司 | Mov assembly having insulating bearing plate structure |
| CN107068312B (en) * | 2017-03-07 | 2020-02-21 | 隆科电子(惠阳)有限公司 | Integrated box-packed FDMOV composite assembly with air discharge structure |
| CZ2017143A3 (en) * | 2017-03-15 | 2018-08-08 | Saltek S.R.O. | A voltage limiter with overvoltage protection |
| CN107170540B (en) * | 2017-05-15 | 2023-02-10 | 隆科电子(惠阳)有限公司 | FDMOV subassembly that long service life weatherability is strong |
| CN107342145A (en) * | 2017-07-10 | 2017-11-10 | 隆科电子(惠阳)有限公司 | A kind of compound MOV for inserting GDT |
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