CN208873696U - A kind of high current Thermal Cutoffs - Google Patents
A kind of high current Thermal Cutoffs Download PDFInfo
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- CN208873696U CN208873696U CN201821385803.3U CN201821385803U CN208873696U CN 208873696 U CN208873696 U CN 208873696U CN 201821385803 U CN201821385803 U CN 201821385803U CN 208873696 U CN208873696 U CN 208873696U
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- electrode sheet
- electrode
- thermal cutoffs
- fusible alloy
- high current
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Abstract
The utility model discloses a kind of high current Thermal Cutoffs, comprising: the fusible alloy of the electrode slice of two thin slices shape, several flake structures being connected between two electrode slices, several fusible alloys are connected in parallel by two electrode slices；Described two laminar electrode slices are respectively first electrode sheet and second electrode sheet, one end of the first electrode sheet is provided with several welding positions, one end of the second electrode sheet is also equipped with several welding positions, and the quantity of the welding position of first electrode sheet is identical as the quantity of the welding position of second electrode sheet, one end of the fusible alloy is welded in the welding position of the first electrode sheet, and the other end is welded in the welding position of the second electrode sheet.The in parallel fusible alloy of multiple flake structures can be configured the quantity of fusible alloy according to the size of electric current, improve the current-carrying capability of Thermal Cutoffs while the variation of more adaptive temperature between the first electrode sheet and second electrode sheet.
Description
Technical field
The utility model relates to fuse technical field more particularly to a kind of high current Thermal Cutoffs.
Background technique
Thermal Cutoffs is also referred to as thermal fuse-link, is temperature sense circuit disconnecting device.Be usually used in electric iron, electric cooker,
Electric furnace etc. can not reuse after Thermal Cutoffs running, only act under fusing-off temperature primary.In normal operating conditions,
Fusible alloy and two leads keep connecting, when Thermal Cutoffs experiences abnormal heating and reaches scheduled fusing-off temperature,
Fusible alloy fusing, and rapid desufflation is to lead both ends, thus disconnecting circuit.
Currently, Thermal Cutoffs, fusible alloy are mostly circle silk structure in the market, still, however it remains following defect:
One, limitation is used in the Thermal protection carried out when electric current is smaller, if desired carries out fuse protection to high current, then needs
Larger-diameter fusible alloy is set and carries out more parallel connections, causes shell is excessive to be not suitable for some that need to fit in work flat
Place on platform, since fuse is not laminar structure, space utilization rate is low, and the difficulty that fuses is big；
Two, the speed of traditional high current Thermal Cutoffs cut-off loop is slower, and it is higher to be unable to satisfy some temperature requirements
The requirement of workplace.
Utility model content
In order to overcome the above technical defects, the utility model provides a kind of high current Thermal Cutoffs, can work
In the circuit of the limited high current in space, and heated fusing speed is fast, can be suitable for the work more demanding to temperature-responsive
Place.
To solve the above-mentioned problems, the utility model is achieved by following technical scheme:
A kind of high current Thermal Cutoffs, comprising: if the electrode slice of two thin slices shape, being connected between two electrode slices
The fusible alloy of dry flake structure, several fusible alloys are connected in parallel by two electrode slices；
Described two laminar electrode slices are respectively first electrode sheet and second electrode sheet, and the one of the first electrode sheet
End is provided with several welding positions, and one end of the second electrode sheet is also equipped with several welding positions, and the welding of first electrode sheet
The quantity of position is identical as the quantity of the welding position of second electrode sheet, and one end of the fusible alloy is welded on the first electrode sheet
Welding position in, the other end is welded in the welding position of the second electrode sheet.
Compared with prior art, the utility model has the beneficial effects that electrode slice and fusible alloy in the utility model
It is flake structure, and multiple fusible alloys in parallel between the first electrode sheet and second electrode sheet, due to parallel shunt
Effect, entire Thermal Cutoffs is worked in biggish current loop, wherein the sectional area and number of fusible alloy
Amount can be configured according to the size of electric current, improve the current-carrying capability of Thermal Cutoffs；Furthermore entire Thermal Cutoffs can
To fit in the surface of many workbenches, it is significantly expanded the heating surface of Thermal Cutoffs, shortens heat conduction path.
Further, the high current Thermal Cutoffs further includes nonmetallic shell, and the shell is divided into pedestal and lid
Plate, the pedestal and cover board are sealed by sealing compound, constitute internal fuse chamber, the welding position of the electrode slice and the easy fusion
Gold is sealed in the fusing chamber.
Further, the surface of the fusible alloy is coated with fluxing disconnected agent.When the fluxing disconnected agent melted by heat, have
The effect of fusible alloy surface oxide layer is activated, the surface tension of fluxing disconnected agent is conducive to fusible alloy and receives to two sides electrode slice
Fusible alloy melting range is reduced in contracting.
Further, described easy at least provided with two panels fusible alloy between the first electrode sheet and second electrode sheet
It fuses golden sectional area and quantity and is determined according to the current-carrying demand of Thermal Cutoffs.Further, the first electrode sheet and
Second electrode on piece is each provided with bending structure, and the bending structure is located at except the shell.The bending structure avoids
Influence of the vibration of work to Thermal Cutoffs internal structure and performance, improves the vibration resistance of Thermal Cutoffs.
Further, be cut with a space between the welding position of the electrode slice, it is described between space be deep U-shape, it is described
Between space be easy to the thermal balance of fusible alloy, increase and receive face when fusible alloy is shunk, be conducive to the thermal contraction of fusible alloy.
Further, it is provided with boss on the pedestal, mounting hole is provided on the cover board, the boss passes through described
The mounting hole of cover board rivets, and realizes the fixation of the nonmetallic shell.
Further, between the pedestal and cover board, back-shaped chamber is equipped with along fusing chamber periphery.
Further, the back-shaped chamber is sealed by sealing compound, realizes the sealing of fusing chamber.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is a kind of structural schematic diagram of high current Thermal Cutoffs disclosed in the utility model embodiment；
Fig. 2 is a kind of structural blast schematic diagram of high current Thermal Cutoffs disclosed in the utility model embodiment；
Fig. 3 is a kind of side structure schematic view of high current Thermal Cutoffs disclosed in the utility model embodiment；
Fig. 4 is a kind of structural schematic diagram of electrode slice in high current Thermal Cutoffs disclosed in the utility model embodiment.
In figure:
1- cover board；11- mounting hole；2- pedestal；21- boss；3- first electrode sheet；The right elongated end of 31-；4- second electrode
Piece；The left elongated end of 41-；42- bending structure；43- welding position；Space between 44-；5- fusible alloy；The fluxing disconnected agent of 51-.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
As shown in Figure 1 to 4, the utility model discloses a kind of high current Thermal Cutoffs, comprising: two thin slices shape
The fusible alloy 5 of electrode slice, several flake structures being connected between two electrode slices, several fusible alloys 5 pass through two electricity
Pole piece parallel connection；Electrode slice includes first electrode sheet 3 and second electrode sheet 4, and the one of first electrode sheet 3 and second electrode sheet 4
End is each provided with several welding positions 43, wherein in the present embodiment, there are four recessed for the setting of left elongated end 41 of first electrode sheet 3
Shape welding position 43, there are four spill welding position 43, fusible alloy 5 is welded on first for the setting of right elongated end 31 of second electrode sheet 4
Between the welding position 43 of electrode slice 3 and the welding position 43 of second electrode sheet 4, fusible alloy 5 is welded into spill welding position 43
Reduce the contact resistance of junction, improves current-carrying capability, while the contact surface of fusible alloy 5 and electrode slice can be increased.Arbitrarily
Two fusible alloys 5 are connected to two electrode slices with parallel-connection structure, and there are four fusible alloys 5 for a parallel connection in the present embodiment.
Preferably, the first electrode sheet 3 in the utility model and second electrode sheet 4 are flake structure, therefore, entire temperature
Degree fuse can fit in the surface of many workbenches.In addition, in parallel between first electrode sheet 3 and second electrode sheet 4
Four flake structure fusible alloys 5 allow entire Thermal Cutoffs to work in biggish electricity due to the effect of parallel shunt
It flows back in road, wherein the sectional area and quantity of fusible alloy 5 can be configured according to the size of electric current, improve temperature guarantor
The current-carrying capability of dangerous silk.
Preferably, the high current Thermal Cutoffs further includes nonmetallic shell, and the nonmetallic shell is divided into bottom
Seat 2 and cover board 1, pedestal 2 and cover board 1 are sealed by sealing compound, constitute the internal chamber that fuses, the welding position 43 of the electrode slice and easy
Fusion gold 5 is sealed in the fusing chamber.
Preferably, the surface of fusible alloy 5 is coated with fluxing disconnected agent 51.When fluxing disconnected 51 melted by heat of agent, have
The effect of 5 surface oxide layer of fusible alloy is activated, the surface tension effects of fluxing disconnected agent 51 are conducive to fusible alloy 5 to two sides
Electrode slice is shunk, and reduces 5 melting range of fusible alloy.Wherein, fusible alloy 5 is set as flake, increases heat dissipation area, improves
The thermal balance of fusible alloy 5, when temperature reaches the operating temperature point of fusible alloy 5, due to 5 each point temperature rise difference of fusible alloy
It is small, the flow rate of fusible alloy 5 is improved, is conducive to fusible alloy 5 and is shunk to two sides.To wherein 5 body of fusible alloy
Product is set as V, and the exposed extension end area in fusing chamber of an electrode slice is set as S, the distance of the intracavitary Cavity surface of electrode slice distance fusing
For d, d > V/S need to be met.When being shunk with meeting the fusing of fusible alloy 5, when there is the contraction of limit unilateral side, fusible alloy 5 is all received
Contracting is adsorbed on the stackeding space needed on the elongated end of electrode slice at side.
Preferably, at least provided with two panels fusible alloy 5, fusible alloy 5 between first electrode sheet 3 and second electrode sheet 4
Installation number according to the size of current of Thermal Cutoffs determine.That is the loop current range of Thermal Cutoffs work is wider,
Also improve the current-carrying capability of Thermal Cutoffs.
Preferably, it is each provided with bending structure 42 in first electrode sheet 3 and second electrode sheet 4, bending structure 42 is located at institute
It states except shell, bending structure 42 avoids influence of the vibration of working environment to Thermal Cutoffs internal structure and performance, mentions
The high vibration resistance of Thermal Cutoffs.
Preferably, it is cut with a space 44 between the welding position 43 of the electrode slice, space 44 is deep U-shape, described
Between space 44 be easy to the thermal balance of fusible alloy 5, increase and receive face when fusible alloy 5 is shunk, be conducive to the heat of fusible alloy 5
It shrinks.
Preferably, the shell is non-metallic material.It is provided with boss 21 on pedestal 2, is provided with mounting hole on cover board 1
11, the mounting hole 11 that the boss 21 passes through cover board 1 rivets, and realizes the fixation of the nonmetallic shell.The pedestal 2 and lid
Between plate 1, back-shaped chamber is equipped with along fusing chamber periphery.Further, the back-shaped chamber is sealed by sealing compound, realizes fusing chamber
Sealing.
When high current Thermal Cutoffs described in the utility model is applied to the Thermal protection of route, due to working as protected device
When occurring abnormal, temperature anomaly is increased, and is transmitted by the heat between electrode slice, temperature is transferred to fluxing disconnected agent 51 and fusible alloy
5, fluxing disconnected agent 51 is switched into liquid by solid-state, starts the oxide layer for activating 5 surface of fusible alloy, when temperature reaches fusible alloy
When 5 operating temperature point, under the tension force effect of fluxing disconnected agent 51, fusible alloy 5 starts to first electrode sheet 3 and second electrode
4 peristaltic contraction of piece, when 5 disjunction of fusible alloy, since sheet fusible alloy 5 has been heated evenly, fusible alloy 5 can be quick, complete
Complete disconnects to two sides electrode slice, quick breaking arc, to disconnect circuit.
The other structures of high current Thermal Cutoffs are referring to the prior art described in the present embodiment, and details are not described herein.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, therefore it is all without departing from the content of the technical scheme of the utility model, implement according to the technical essence of the utility model to above
Any modification, equivalent variations and modification, are still within the scope of the technical solutions of the present invention made by example.
Claims (9)
1. a kind of high current Thermal Cutoffs characterized by comprising
The fusible alloy of the electrode slice of two thin slices shape, several flake structures being connected between two electrode slices, it is described several
Fusible alloy is connected in parallel by two electrode slices；
Described two laminar electrode slices are respectively first electrode sheet and second electrode sheet, and one end of the first electrode sheet is set
It is equipped with several welding positions, one end of the second electrode sheet is also equipped with several welding positions, and the welding position of first electrode sheet
Quantity is identical as the quantity of the welding position of second electrode sheet, and one end of the fusible alloy is welded on the weldering of the first electrode sheet
It connects in position, the other end is welded in the welding position of the second electrode sheet.
2. high current Thermal Cutoffs according to claim 1, which is characterized in that it further include nonmetallic shell, it is described
Shell is divided into pedestal and cover board, and the pedestal and cover board are sealed by sealing compound, constitutes internal fusing chamber, the electrode slice
Welding position and the fusible alloy are sealed in the fusing chamber.
3. high current Thermal Cutoffs according to claim 1, which is characterized in that the surface of the fusible alloy is coated with
Fluxing disconnected agent.
4. high current Thermal Cutoffs according to claim 1, which is characterized in that the first electrode sheet and second electrode
At least provided with two panels fusible alloy between piece.
5. high current Thermal Cutoffs according to claim 2, which is characterized in that the first electrode sheet and second electrode
On piece is each provided with bending structure, and the bending structure is located at except the shell.
6. high current Thermal Cutoffs according to claim 1, which is characterized in that cut between the welding position of the electrode slice
Cut a space, it is described between space be deep U-shape.
7. high current Thermal Cutoffs according to claim 2, which is characterized in that be provided with boss, institute on the pedestal
It states and is provided with mounting hole on cover board, the mounting hole that the boss passes through the cover board rivets, and realizes the nonmetallic shell
It is fixed.
8. high current Thermal Cutoffs according to claim 2, which is characterized in that between the pedestal and cover board, along fusing
Chamber periphery is equipped with back-shaped chamber.
9. high current Thermal Cutoffs according to claim 8, which is characterized in that the back-shaped chamber is sealed by sealing compound
Mouthful, realize the sealing of fusing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821385803.3U CN208873696U (en) | 2018-08-27 | 2018-08-27 | A kind of high current Thermal Cutoffs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821385803.3U CN208873696U (en) | 2018-08-27 | 2018-08-27 | A kind of high current Thermal Cutoffs |
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| Publication Number | Publication Date |
|---|---|
| CN208873696U true CN208873696U (en) | 2019-05-17 |
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ID=66465851
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821385803.3U Active CN208873696U (en) | 2018-08-27 | 2018-08-27 | A kind of high current Thermal Cutoffs |
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| CN (1) | CN208873696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022073359A1 (en) * | 2020-10-10 | 2022-04-14 | 厦门赛尔特电子有限公司 | Low-voltage controlled fuse |
-
2018
- 2018-08-27 CN CN201821385803.3U patent/CN208873696U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022073359A1 (en) * | 2020-10-10 | 2022-04-14 | 厦门赛尔特电子有限公司 | Low-voltage controlled fuse |
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