CN113571378A - Novel heat sensing protector - Google Patents
Novel heat sensing protector Download PDFInfo
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- CN113571378A CN113571378A CN202110835800.5A CN202110835800A CN113571378A CN 113571378 A CN113571378 A CN 113571378A CN 202110835800 A CN202110835800 A CN 202110835800A CN 113571378 A CN113571378 A CN 113571378A
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- 230000001012 protector Effects 0.000 title claims abstract description 34
- 230000003068 static effect Effects 0.000 claims abstract description 37
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 45
- 238000009413 insulation Methods 0.000 claims description 41
- 239000012528 membrane Substances 0.000 claims description 22
- 238000005476 soldering Methods 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 10
- 229910052573 porcelain Inorganic materials 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The invention discloses a novel heat sensing protector which comprises a shell, a bottom plate assembly, two static sheet joint assemblies, a heat sensing assembly, a support assembly, an insulating sheet and a limiting support, wherein the shell is arranged on the bottom plate assembly to form a closed accommodating space, and the heat sensing assembly, the support assembly, the insulating sheet and the two static sheet joint assemblies are all arranged in the closed accommodating space. The invention adopts the sudden-jump mode of the heat-sensitive bimetallic strip to cut off the circuit and adds the arc isolating film, so that the electric arc is not directly splashed onto the bimetallic strip but is isolated by the arc isolating film, the bimetallic strip is protected, and the service life of the overload protector is prolonged doubly.
Description
Technical Field
The invention relates to a novel heat sensing protector, and belongs to the technical field of power electronics.
Background
The temperature protector is widely applied to circuits of electric appliances such as household appliances, motors, refrigeration equipment, heating equipment and the like, and can be physically deformed in a switch according to the temperature change of a working environment, so that certain special effects are generated, a series of automatic control elements for disconnection action are generated, and the protection of the circuits is realized.
The bimetallic strip is also called as a thermal bimetallic strip, and because the thermal expansion coefficients of metals of all layers are different, when the temperature changes, the deformation of the active layer is larger than that of the passive layer, so that the whole bimetallic strip can bend towards one side of the passive layer, and the curvature of the composite material changes to generate deformation.
The service life of the current three-phase high-power overload protector is shorter, and especially compared with a single-phase overload protector, the service life requirement is far lower than the market requirement. The main reason is that high-temperature electric arc is generated at the opening-closing moment of the contact, and the electric arc can splash around and splash onto the bimetal disc to damage the characteristics of the disc.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the novel heat sensing protector, the arc is prevented from directly splashing on the bimetallic strip by adding the arc isolating film to isolate the damage of the arc to the bimetallic strip, the bimetallic strip is protected, the service life of the overload protector is prolonged in a doubling way, and the heat sensing protector is favorable for stably applying the protection requirement of large voltage and large current, so that the circuit protection is realized.
The invention mainly adopts the technical scheme that:
a novel heat sensing protector comprises a shell, a bottom plate component, two static sheet joint components, a heat sensitive component, a support component, an insulating sheet and a limiting support, wherein the shell is arranged on the bottom plate component to form a closed accommodating space, the heat sensitive component, the support component, the insulating sheet and the two static sheet joint components are all arranged in the closed accommodating space,
the support assembly comprises a support, heating plates and an adjusting screw, the support is installed on the framework plate, the adjusting screw penetrates downwards from the top end of the support and is in threaded connection with the support, the heating plates comprise a lower heating plate, a middle heating plate and an upper heating plate which are integrally bent and formed, the bending positions are in smooth transition, the lower heating plate comprises two symmetrically-arranged empennage heating plates, the two empennage heating plates are welded at two ends of a welding plate of the thermosensitive assembly, a through groove is formed in the middle heating plate and used for penetrating through the adjusting screw, and the upper heating plate is welded with the bottom surface of the support;
the heat-sensitive component comprises a biplate, a welding piece, a first arc isolating membrane, a second arc isolating membrane, a first movable contact and a second movable contact, wherein the first arc isolating membrane and the second arc isolating membrane are respectively arranged at two ends of the bottom surface of the biplate, the first movable contact and the second movable contact are respectively arranged at one side, away from the biplate, of the first arc isolating membrane and one side, away from the biplate, of the second arc isolating membrane, an extending lug is arranged in the middle of the biplate, the lug and the biplate are integrally formed, and the lug is welded with the top surface of the welding piece;
the insulating sheets are welded on the upper surfaces of the two sheets;
the limiting support is a 90-degree bending limiting plate, the vertical part of the bending limiting plate is abutted against the insulating sheet, and one end of the horizontal part of the bending limiting plate is connected with the framework plate in the bottom plate assembly;
and the two static sheet contact assemblies are respectively arranged on the bottom plate assembly and respectively correspond to the first movable contact and the second movable contact.
Preferably, the bottom plate assembly comprises a framework plate, two ceramic sheets, two binding posts and two glass bodies, the framework plate is provided with the two glass bodies, the two binding posts are respectively inserted into the two glass bodies, the two ceramic sheets are respectively arranged on the upper surface of the framework plate and are positioned in the closed accommodating space, each of the ceramic sheets and the framework plate is provided with a through hole, and the upper ends of the binding posts are welded with the still sheet of the still sheet contact assembly after sequentially penetrating through the through holes of the framework plate and the ceramic sheets.
Preferably, the still piece contact subassembly includes still piece and stationary contact, the still piece sets up the porcelain piece upper surface, the stationary contact is fixed to be set up the upper surface of still piece, two still piece contact subassemblies's structure is the same, and two still piece contact subassemblies's stationary contact respectively with first movable contact and second movable contact correspond the setting.
Preferably, the static sheet includes a first horizontal portion, a second horizontal portion and an inclined portion, the first horizontal portion and the second horizontal portion are integrally formed, the first horizontal portion and the second horizontal portion are respectively connected to an inclined lower end and an inclined upper end of the inclined portion, the first horizontal portion abuts against an upper surface of a porcelain sheet, the static joint is disposed on an upper surface of the first horizontal portion, the second horizontal portion is located above the porcelain sheet, a bottom surface of the second horizontal portion is connected to an upper end of the binding post, and the static joint is disposed on an upper surface of the first horizontal portion.
Preferably, the insulating piece is asymmetric U type structure, and asymmetric U type structure includes long insulation board, short insulation board and insulating connecting plate, long insulation board and short insulation board respectively with insulating connecting plate is connected perpendicularly, long insulation board and short insulation board respectively with insulating connecting plate integrated into one piece, long insulation board and short insulation board are parallel to each other, the lower bottom surface of long insulation board with the upper surface welding of biplate, short insulation board is located the below of soldering lug, the vertical portion and the short insulation board butt of spacing support.
Preferably, the housing and the skeleton plate are assembled by welding.
Preferably, the bending angle of the middle heating plate and the lower heating plate is 5-25 degrees.
Preferably, the first arc isolating membrane and the second arc isolating membrane are both U-shaped arc plates.
Preferably, the soldering lug includes fashioned connecting plate and the arc plate is buckled to the integral type, and the smooth transition of department of buckling, arc plate integrated into one piece sets up the side at the connecting plate, the both ends of connecting plate are upwards buckled respectively and are formed the support end, two fin heating plate welds respectively and sets up the support of soldering lug is served the upper surface, the arc plate is located the below of biplate, just the lug welding of biplate is in on the connecting plate of soldering lug intermediate position.
Has the advantages that: the invention provides a novel heat sensing protector, which has the following advantages:
(1) a circuit is cut off in a sudden jump mode of a thermosensitive bimetallic strip;
(2) the metal shell is adopted for sealing, and inert protective gas is filled in the metal shell, so that the metal shell can resist large current;
(3) the arc isolating film is added, so that the electric arc is not directly splashed onto the bimetallic strip any more, but is isolated by the arc isolating film, the bimetallic strip is protected, and the service life of the overload protector is prolonged doubly.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of a bracket assembly of the present invention;
FIG. 4 is a schematic view of a heater chip according to the present invention;
FIG. 5 is a schematic view of the construction of the heat sensitive module of the present invention 1;
FIG. 6 is a schematic view of the construction of a heat sensitive module of the present invention, FIG. 2;
FIG. 7 is a schematic view of a stator structure of the present invention;
FIG. 8 is a schematic view of an insulating sheet according to the present invention;
FIG. 9 is a schematic view of a first arc barrier film structure according to the present invention;
FIG. 10 is a schematic view of a bonding pad structure according to the present invention;
FIG. 11 is a schematic view of the assembly of the biplate, soldering lug, heating plate and insulating plate of the present invention;
FIG. 12 is a partial assembly structure of the present invention
In the figure: the device comprises a shell 1, a bottom plate assembly 2, a framework plate 2-1, ceramic tiles 2-2, wiring terminals 2-3, a glass body 2-4, through holes 2-5, a fixed piece contact assembly 3, a fixed piece 3-1, a fixed contact 3-2, a thermosensitive assembly 4, a double piece 4-1, a lug 4-11, a soldering piece 4-2, a first arc isolating membrane 4-3, a second arc isolating membrane 4-4, a first movable contact 4-5, a second movable contact 4-6, a bracket assembly 5, a bracket 5-1, a heating piece 5-2, a lower heating piece 5-21, a middle heating piece 5-22, an upper heating piece 5-23, a through groove 5-24, an adjusting screw 5-3, an insulating piece 6, a long insulating plate 6-1, a short insulating plate 6-2, an insulating connecting plate 6-3, a long insulating plate 5-23, a long insulating plate 6-3, a short insulating plate and a heat conducting plate, And a limiting bracket 7.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1:
as shown in fig. 1-2, a novel thermal sensing protector comprises a housing 1, a base plate assembly 2, two stationary contact assemblies 3, a thermal sensitive assembly 4, a bracket assembly 5, an insulating sheet 6 and a limiting bracket 7, wherein the housing 1 is disposed on the base plate assembly 2 to form a closed accommodating space, the thermal sensitive assembly 4, the bracket assembly 5, the insulating sheet 6 and the two stationary contact assemblies 3 are all disposed in the closed accommodating space,
as shown in fig. 3-4, the bracket assembly 5 includes a bracket 5-1, a heating plate 5-2 and an adjusting screw 5-3, the bracket 5-1 is mounted on a frame plate 2-1, the adjusting screw 5-3 passes through the top end of the bracket 5-1 downwards and is in threaded connection with the bracket 5-1, the heating plate 5-2 includes a lower heating plate 5-21, a middle heating plate 5-22 and an upper heating plate 5-23 which are integrally bent and formed, and the bent portion is in smooth transition, the lower heating plate includes two symmetrically arranged fin heating plates 5-21, the two fin heating plates 5-21 are welded at two ends of a soldering lug 4-2 of the thermosensitive assembly, the middle heating plate 5-22 is provided with a through slot 5-24 for passing through the adjusting screw 5-3, the upper heating sheet 5-23 is welded with the bottom surface of the bracket 5-1; the specific shape of the through groove in the present invention can be designed by the selection of the skilled person.
As shown in fig. 5-6, the heat-sensitive component 4 comprises a biplate 4-1, a soldering lug 4-2, a first arc isolating membrane 4-3, a second arc isolating membrane 4-4, a first movable contact 4-5 and a second movable contact 4-6, the first arc isolating film 4-3 and the second arc isolating film 4-4 are respectively arranged at two ends of the bottom surface of the double sheet 4-1, the first movable contact point 4-5 and the second movable contact point 4-6 are respectively arranged on one sides of the first arc isolating membrane 4-3 and the second arc isolating membrane 4-4 far away from the double sheet 4-1, an extension lug 4-11 is arranged in the middle of the double plate 4-1, the lug 4-11 and the double plate are integrally formed, and the lug 4-11 and the top surface of the welding plate 4-2 are welded;
the insulating sheet 6 is welded on the upper surface of the double sheets 4-1;
the limiting support 7 is a 90-degree bending limiting plate, the vertical part of the bending limiting plate is connected with the soldering lug 4-2, and one end of the horizontal part of the bending limiting plate is connected with the framework plate 2-1 in the bottom plate assembly 2;
the two static sheet contact assemblies 3 are respectively arranged on the bottom plate assembly 2 and respectively correspond to the first movable contact 4-5 and the second movable contact 4-6.
Preferably, the bottom plate assembly 2 comprises a framework plate 2-1, two ceramic tiles 2-2, two binding posts 2-3 and two glass bodies 2-4, the framework plate 2-1 is provided with the two glass bodies 2-4, the two binding posts 2-3 are respectively inserted into the two glass bodies 2-4, the two ceramic tiles 2-2 are respectively arranged on the upper surface of the framework plate 2-1 and are located in the closed accommodating space, each of the ceramic tiles 2-2 and the framework plate is provided with a through hole 2-5, and the upper end of the binding post 2-3 is welded with the static piece 3-1 of the static piece contact assembly 3 after sequentially passing through the framework plate 2-1 and the through hole 2-5 of the ceramic tile 2-2.
Preferably, the static sheet contact assembly comprises a static sheet 3-1 and a static contact 3-2, the static sheet 3-1 is arranged on the upper surface of the ceramic sheet 2-2, the static contact 3-2 is fixedly arranged on the upper surface of the static sheet 3-1, the two static sheet contact assemblies 3 have the same structure, and the static contact 3-1 of the two static sheet contact assemblies 3 is respectively arranged corresponding to the first movable contact 4-5 and the second movable contact 4-6.
Preferably, as shown in fig. 7, the static sheet 3-1 includes a first horizontal portion 3-11, a second horizontal portion 3-12 and an inclined portion 3-13 which are integrally formed, the first horizontal portion 3-11 and the second horizontal portion 3-12 are respectively connected to an inclined lower end and an inclined upper end of the inclined portion 3-13, the first horizontal portion 3-11 abuts on an upper surface of the tile 2-2, the static joint 3-2 is disposed on an upper surface of the first horizontal portion 3-11, the second horizontal portion 3-12 is located above the tile 2-2, and a bottom surface of the second horizontal portion 3-12 is connected to an upper end of the post 2-3.
Preferably, as shown in fig. 8, the insulation sheet 6 is an asymmetric U-shaped structure, the asymmetric U-shaped structure includes a long insulation plate 6-1, a short insulation plate 6-2 and an insulation connection plate 6-3, the long insulation plate 6-1 and the short insulation plate 6-2 are respectively connected to the insulation connection plate 6-3 vertically, the long insulation plate 6-1 and the short insulation plate 6-2 are respectively formed integrally with the insulation connection plate 6-3, the long insulation plate 6-1 and the short insulation plate 6-2 are parallel to each other, the lower bottom surface of the long insulation plate 6-1 is welded to the upper surface of the double plate 4-1, the short insulation plate 6-2 is located below the welding plate 4-2, and the vertical portion of the limiting bracket 7 abuts against the short insulation plate 6-2.
Preferably, the housing 1 and the skeleton plate 2-1 are assembled by welding.
Preferably, the bending angle of the middle heating plate 5-22 and the lower heating plate 2 is 5-25 °.
Preferably, as shown in fig. 9, the first arc isolating membrane 4-3 and the second arc isolating membrane 4-4 are both U-shaped arc plates.
Preferably, as shown in fig. 10, the soldering lug 4-2 includes a connecting plate 4-21 and an arc plate 4-22 which are integrally bent and formed, and the bent portion is in smooth transition, the arc plate 4-22 is integrally formed and arranged on the side of the connecting plate 4-21, two ends of the connecting plate 4-21 are respectively bent upwards to form a support end 4-23, two empennage heating strips are respectively welded and arranged on the upper surface of the support end 4-23 of the soldering lug 4-2, the arc plate 4-22 is located below the two strips, and the protruding strip 4-11 of the two strips 4-1 is welded on the connecting plate 4-21 at the middle position of the soldering lug 4-2.
The working principle of the invention is as follows:
the protector is electrified to work in the high-power equipment, and when the equipment normally operates and voltage-current are not obviously abnormal, the protector can be regarded as a lead, so that the working operation of the equipment is not influenced. When the equipment runs abnormally and the current exceeds the control value, the heating sheet in the protector generates early warning heat, the heat is transmitted to the surfaces of the two sheets in a short time, and the materials of the two sheets belong to heat-sensitive metal composite materials and can overturn and bounce after being heated, so that the power supply is cut off, and the safety of the equipment is protected. When the heat on the surfaces of the two pieces is dissipated, the two pieces can be memorized and reset, and the equipment can be electrified again to work, and the process is circulated.
After the double-piece bounces, the contact of the double-piece static piece can generate electric arcs at the moment of power on and power off, the electric arcs are killer of all electric switches, the high-temperature electric arcs splash onto the double-piece static piece. After the arc isolating film is additionally arranged on the surface layer of the double pieces, the arc which is originally splashed to the double pieces is absorbed by the arc isolating film, and the double pieces are protected by isolation, so that the purpose of greatly improving the reliability of the double pieces is achieved, and the reliability and the service life of the protector are also greatly improved.
In the invention, the working principle of the adjusting screw is as follows:
the adjusting screw is used for adjusting the elasticity between the movable contact and the fixed contact of the overload protector: after the protector is assembled, the two pieces in the protector are in an unstressed (or stressed uncontrolled) state, and the elastic force between the first and second movable contact points on the two pieces and the first and second static contact points corresponding to the static piece is uncontrolled. The protector at the moment can not work, once the protector is electrified, if the contact force between the movable contact and the static contact is very small, the contact resistance is larger, the movable contact and the static contact are instantaneously damaged due to high temperature generated by high resistance, therefore, the adjusting screw can be screwed, the position of the adjusting screw is directly changed to act on the center of the double plates, after the double plates are stressed, the position of the movable contact is limited by the static contact, and finally, the radian of the double plates (stamping forming) is changed, so that the elastic force is generated between the two groups of contacts. Therefore, the purpose of controlling the elastic force between the contacts is achieved, the service life of the contacts is ensured, and the service life of the protector is also ensured.
The adjusting screw is fixed on the bracket, and when the adjusting screw is adjusted, the fixing position of the screw is not changed, and the change is the height of the head part of the adjusting screw, namely the contact position of the adjusting screw and the biplate.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A novel heat sensing protector is characterized by comprising a shell, a bottom plate component, two static sheet joint components, a heat sensitive component, a support component, an insulating sheet and a limiting support, wherein the shell is arranged on the bottom plate component to form a closed accommodating space, the heat sensitive component, the support component, the insulating sheet and the two static sheet joint components are all arranged in the closed accommodating space,
the support assembly comprises a support, heating plates and an adjusting screw, the support is installed on the framework plate, the adjusting screw penetrates downwards from the top end of the support and is in threaded connection with the support, the heating plates comprise a lower heating plate, a middle heating plate and an upper heating plate which are integrally bent and formed, the bending positions are in smooth transition, the lower heating plate comprises two symmetrically-arranged empennage heating plates, the two empennage heating plates are welded at two ends of a welding plate of the thermosensitive assembly, a through groove is formed in the middle heating plate and used for penetrating through the adjusting screw, and the upper heating plate is welded with the bottom surface of the support;
the heat-sensitive component comprises a biplate, a welding piece, a first arc isolating membrane, a second arc isolating membrane, a first movable contact and a second movable contact, wherein the first arc isolating membrane and the second arc isolating membrane are respectively arranged at two ends of the bottom surface of the biplate, the first movable contact and the second movable contact are respectively arranged at one side, away from the biplate, of the first arc isolating membrane and one side, away from the biplate, of the second arc isolating membrane, an extending lug is arranged in the middle of the biplate, the lug and the biplate are integrally formed, and the lug is welded with the top surface of the welding piece;
the insulating sheets are welded on the upper surfaces of the two sheets;
the limiting support is a 90-degree bending limiting plate, the vertical part of the bending limiting plate is abutted against the insulating sheet, and one end of the horizontal part of the bending limiting plate is connected with the framework plate in the bottom plate assembly;
and the two static sheet contact assemblies are respectively arranged on the bottom plate assembly and respectively correspond to the first movable contact and the second movable contact.
2. The novel heat sensing protector according to claim 1, wherein the bottom plate assembly comprises a frame plate, two ceramic sheets, two binding posts and two glass bodies, the frame plate is provided with the two glass bodies, the two binding posts are respectively inserted into the two glass bodies, the two ceramic sheets are respectively arranged on the upper surface of the frame plate and are located in the closed accommodating space, each of the ceramic sheets and the frame plate is provided with a through hole, and the upper ends of the binding posts are welded with the static sheet of the static sheet contact assembly after sequentially passing through the through holes of the frame plate and the ceramic sheets.
3. The novel heat sensing protector according to claim 2, wherein the stationary contact assembly comprises a stationary plate and a stationary contact, the stationary plate is disposed on the upper surface of the porcelain plate, the stationary contact is fixedly disposed on the upper surface of the stationary plate, the two stationary contact assemblies have the same structure, and the stationary contacts of the two stationary contact assemblies are respectively disposed corresponding to the first movable contact and the second movable contact.
4. The novel heat sensing protector according to claim 2 or 3, wherein the static sheet comprises a first horizontal portion, a second horizontal portion and an inclined portion, the first horizontal portion and the second horizontal portion are integrally formed, the first horizontal portion is connected with the inclined lower end and the inclined upper end of the inclined portion, the first horizontal portion abuts against the upper surface of the porcelain sheet, the static joint is arranged on the upper surface of the first horizontal portion, the second horizontal portion is located above the porcelain sheet, the bottom surface of the second horizontal portion is connected with the upper end of the binding post, and the static joint is arranged on the upper surface of the first horizontal portion.
5. The novel heat sensing protector according to claim 4, wherein the insulation sheet is an asymmetric U-shaped structure, the asymmetric U-shaped structure comprises a long insulation board, a short insulation board and an insulation connection board, the long insulation board and the short insulation board are respectively connected with the insulation connection board perpendicularly, the long insulation board and the short insulation board are respectively formed with the insulation connection board integrally, the long insulation board and the short insulation board are parallel to each other, the lower bottom surface of the long insulation board is welded with the upper surface of the two pieces, the short insulation board is located below the soldering pieces, and the vertical portion of the limiting bracket abuts against the short insulation board.
6. The protector of claim 5 wherein the housing and frame plate are assembled by welding.
7. The protector of claim 6 wherein the angle of bending of the middle and lower heating plates is between 5 ° and 25 °.
8. The protector of claim 7 wherein the first and second arc barriers are U-shaped circular arc plates.
9. The novel heat sensing protector according to claim 7, wherein the soldering lug comprises a connecting plate and an arc plate which are integrally bent and formed, the bending part is smoothly transited, the arc plate is integrally formed on the side edge of the connecting plate, two ends of the connecting plate are respectively bent upwards to form a supporting end, two tail fin heating pieces are respectively welded on the upper surface of the supporting end of the soldering lug, the arc plate is located below the two fins, and the two fins are welded on the connecting plate at the middle position of the soldering lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110835800.5A CN113571378A (en) | 2021-07-23 | 2021-07-23 | Novel heat sensing protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110835800.5A CN113571378A (en) | 2021-07-23 | 2021-07-23 | Novel heat sensing protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113571378A true CN113571378A (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110835800.5A Pending CN113571378A (en) | 2021-07-23 | 2021-07-23 | Novel heat sensing protector |
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|---|---|
| CN (1) | CN113571378A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146934C (en) * | 1996-07-04 | 2004-04-21 | 株式会社生方制作所 | Thermal protector |
| CN101640142A (en) * | 2009-08-22 | 2010-02-03 | 贵州航天电器股份有限公司 | Temperature relay |
| CN102412095A (en) * | 2011-07-28 | 2012-04-11 | 匡法荣 | Three-phase current temperature overheat protector |
| CN104350564A (en) * | 2013-02-13 | 2015-02-11 | 特密·格拉特步股份有限公司 | Temperature-dependent switch |
| CN205016483U (en) * | 2015-09-30 | 2016-02-03 | 匡成效 | Built -in temperature electric current overload protective device |
-
2021
- 2021-07-23 CN CN202110835800.5A patent/CN113571378A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146934C (en) * | 1996-07-04 | 2004-04-21 | 株式会社生方制作所 | Thermal protector |
| CN101640142A (en) * | 2009-08-22 | 2010-02-03 | 贵州航天电器股份有限公司 | Temperature relay |
| CN102412095A (en) * | 2011-07-28 | 2012-04-11 | 匡法荣 | Three-phase current temperature overheat protector |
| CN104350564A (en) * | 2013-02-13 | 2015-02-11 | 特密·格拉特步股份有限公司 | Temperature-dependent switch |
| CN205016483U (en) * | 2015-09-30 | 2016-02-03 | 匡成效 | Built -in temperature electric current overload protective device |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211029 |
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| RJ01 | Rejection of invention patent application after publication |