CN220122610U - Instant over-temperature over-current protector - Google Patents
Instant over-temperature over-current protector Download PDFInfo
- Publication number
- CN220122610U CN220122610U CN202321645427.8U CN202321645427U CN220122610U CN 220122610 U CN220122610 U CN 220122610U CN 202321645427 U CN202321645427 U CN 202321645427U CN 220122610 U CN220122610 U CN 220122610U
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- bimetallic strip
- shell
- over
- elastic sheet
- sealing cover
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- 230000001012 protector Effects 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000001052 transient effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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Abstract
The utility model discloses an instant over-temperature overcurrent protector which comprises a shell, a conducting frame, a bimetallic strip and a reset tube, wherein a sealing cover is arranged at the upper end of the shell, an insulating rod is arranged on the lower surface of the sealing cover, a first elastic strip is arranged on the surface of the insulating rod, a second elastic strip is arranged on the bottom surface of the interior of the shell, two groups of conducting frames are arranged on the left side surface and the right side surface of the insulating rod, the conducting frame is electrically connected with the first elastic strip and the second elastic strip, the bimetallic strip penetrates through the insulating rod, the left end and the right end of the bimetallic strip are in contact with the conducting frame, two groups of rubber caps sleeved on the surface of the reset tube are arranged on the surface of the sealing cover, air is stored through air inlets on the surface of the rubber caps, and when the bimetallic strip is separated from the conducting frame due to unstable voltage, the rubber caps are pressed to drive the reset tube to move downwards, so that the bimetallic strip is pushed to be out of the conducting frame again, and at the moment, the air stored in the rubber caps enters the interior of the shell, the bimetallic strip has a heat dissipation effect, and the bimetallic strip can be restored to a conducting state.
Description
Technical Field
The utility model relates to the technical field of overcurrent protectors, in particular to an instant over-temperature overcurrent protector.
Background
The overcurrent protector has the function of cutting off the circuit in time when short circuit or overload accident occurs, so as to prevent damage to electric equipment and cables and fire caused by the damage.
The original conventional overcurrent protector only has a general protection function, and is automatically circulated for resetting protection after disconnection, but the temperature control is always in a working state, cannot continuously keep the constant temperature effect, and cannot be always locked in a state of continuously keeping constant temperature.
In order to solve the problems in the prior art, the scheme of the instant over-temperature over-current protection device (bulletin number CN 208908209U) can be found through searching, so that the condition that the temperature point is kept continuously can not change until a user cuts off the power supply, and if the power supply of the device is cut off, the device can be switched on and reset to a normal state along with a reset condition set by a product per se, and the life and property safety of the user can be ensured.
However, when the circuit has an overcurrent fault, after a period of cooling, the bimetal strip can be automatically reset, so that the bimetal strip is restored to a state of being connected with the circuit, if the circuit is still connected under the condition that the fault is not released at the moment, accidents still occur, in addition, the cooling of the bimetal strip requires time, and if the overcurrent is only caused by unstable voltage, the bimetal strip cannot be restored to the state in time, and the use of electric power is delayed.
Disclosure of Invention
The present utility model is directed to an instantaneous over-temperature over-current protector, which solves the problems set forth in the above-mentioned background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the instantaneous over-temperature overcurrent protector comprises a shell, wherein a sealing cover is arranged at the upper end of the shell, an exhaust hole is formed in the upper surface of the sealing cover, an insulating rod is arranged on the lower surface of the sealing cover, a first elastic sheet is arranged on the surface of the insulating rod, and a second elastic sheet is arranged on the bottom surface of the interior of the shell;
the conducting frames are arranged in two groups and are positioned on the left side surface and the right side surface of the insulating rod, and the conducting frames are electrically connected with the first elastic sheet and the second elastic sheet;
the bimetallic strip penetrates through the insulating rod, and the left end and the right end of the bimetallic strip are in contact with the conducting frame;
the reset tube penetrates through the sealing cover, the reset tube is located above the end portion of the bimetallic strip, two sets of rubber caps sleeved on the surface of the reset tube are arranged on the surface of the sealing cover, and an air inlet is formed in the upper surface of the rubber caps.
Further, the reset tube surface is sleeved with a reset spring, and the lower end of the reset spring is propped against the surface of the sealing cover.
Further, the upper surface of the second elastic sheet is provided with a long spring, the upper end of the long spring is in contact with the left side conduction frame, the upper surface of the first elastic sheet is provided with a short spring, and the upper end of the short spring is in contact with the right side conduction frame.
Furthermore, two groups of wiring lugs are arranged on the lower surface of the shell, and the two groups of wiring lugs are respectively connected with the second elastic piece and the first elastic piece.
Further, a fixing piece is arranged in the middle of the lower surface of the shell, and a fixing bolt is inserted into the surface of the fixing piece.
Further, the lower surface of the reset tube is fixedly connected with a pressing ring.
Compared with the prior art, the utility model has the beneficial effects that:
(1) Air is stored through the air inlet on the surface of the rubber cap, when the bimetallic strip is separated from the conduction frame because of unstable overheat of voltage, the reset tube is driven to move downwards by pressing the rubber cap, so that the reset tube pushes the bimetallic strip to be in air outlet with the conduction frame again, and at the moment, the air stored in the rubber cap enters the shell, so that the bimetallic strip is cooled, and the bimetallic strip can be accelerated to recover to a conduction state.
(2) The second elastic sheet is connected with the conduction frame through the long spring, when the second elastic sheet is in metal fatigue, the long spring has elasticity, so that the communication state of the second elastic sheet and the conduction frame can be maintained, and the state that the overcurrent protector is broken when used for a long time is avoided.
Drawings
FIG. 1 is a front view of the present utility model;
fig. 2 is a schematic view of a bimetal in contact with a conductive frame according to the present utility model;
fig. 3 is a schematic diagram showing separation of the bimetal and the conductive frame according to the present utility model.
In the figure: 1. a housing; 2. a cover; 3. a rubber cap; 4. a wire connection piece; 5. a fixing piece; 6. a second spring plate; 7. a first elastic sheet; 8. an insulating rod; 9. bimetallic strips; 10. a conduction frame; 11. a long spring; 12. a short spring; 13. a reset tube; 14. a reset spring; 15. an exhaust hole; 16. an air inlet; 17. and pressing the ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present utility model provides a technical solution: the instantaneous over-temperature overcurrent protector comprises a shell 1, wherein a sealing cover 2 is arranged at the upper end of the shell 1, an exhaust hole 15 is formed in the upper surface of the sealing cover 2, an insulating rod 8 is arranged on the lower surface of the sealing cover 2, a first elastic sheet 7 is arranged on the surface of the insulating rod 8, and a second elastic sheet 6 is arranged on the bottom surface of the inner part of the shell 1;
the shell 1 and the sealing cover 2 are made of plastic, the inner surface of the sealing cover 2 is provided with protruding points, the protruding points are clamped on the surface of the shell 1, the connection stability of the shell 1 and the sealing cover 2 is improved, the plastic is non-conductive, and the occurrence of electric shock can be avoided;
the conducting frames 10 are arranged in two groups and are positioned on the left side surface and the right side surface of the insulating rod 8, the conducting frames 10 are electrically connected with the first elastic sheet 7 and the second elastic sheet 6, and the two groups of conducting frames 10 are not contacted with each other;
a bimetal 9, wherein the bimetal 9 penetrates through the insulating rod 8, and the left end and the right end of the bimetal 9 are contacted with the conducting frame 10;
the insulating rod 8 supports the bimetallic strip 9 and is connected to the middle part of the bimetallic strip 9, so that the bimetallic strip 9 can be smoothly heated and deformed;
the reset tube 13 penetrates through the sealing cover 2, the reset tube 13 is positioned above the end part of the bimetallic strip 9, two groups of rubber caps 3 sleeved on the surface of the reset tube 13 are arranged on the surface of the sealing cover 2, and an air inlet 16 is formed in the upper surface of the rubber caps 3;
the reset tube 13 is hollow, so that air can enter the shell 1 conveniently, and the upper end of the reset tube 13 is provided with a convex edge which can block the reset spring 14.
Specifically, as shown in fig. 2, the surface of the reset tube 13 is sleeved with a reset spring 14, the lower end of the reset spring 14 is propped against the surface of the sealing cover 2, and the reset tube 13 is propped up by the reset spring 14, so that the lower end of the reset tube 13 is far away from the bimetallic strip 9, the bimetallic strip 9 cannot be influenced to deform, and the overcurrent protector is ensured to play a role in overcurrent protection.
In this embodiment, as shown in fig. 2, the upper surface of the second elastic sheet 6 is provided with a long spring 11, the upper end of the long spring 11 contacts with the left conduction frame 10, the upper surface of the first elastic sheet 7 is provided with a short spring 12, and the upper end of the short spring 12 contacts with the right conduction frame 10.
The long spring 11 and the short spring 12 have elasticity, and when the second elastic sheet 6 and the first elastic sheet 7 are deformed due to metal fatigue in long-term use, the long spring 11 and the short spring 12 can be adaptively stretched to be continuously contacted with the conducting frame 10.
In this embodiment, as shown in fig. 2, two sets of lugs 4 are disposed on the lower surface of the housing 1, and the two sets of lugs 4 are respectively connected with the second elastic sheet 6 and the first elastic sheet 7, and the surface of the lug 4 has a wire connection port, so that the wire can conveniently pass through the lug 4, or be connected with the lug 4 by soldering.
In this embodiment, as shown in fig. 2, a fixing piece 5 is disposed in the middle of the lower surface of the housing 1, and a fixing bolt is inserted into the surface of the fixing piece 5, and is fixed with an external object through the fixing bolt, so as to fix the housing 1.
In this embodiment, as shown in fig. 2, the lower surface of the reset tube 13 is fixedly connected with a pressing ring 17, where the pressing ring 17 can increase the contact area between the reset tube 13 and the bimetal 9, which is beneficial to pushing the bimetal 9 to reset.
Specifically, when in use, the wires are connected with the two groups of wiring lugs 4, referring to fig. 2, at the moment, the left and right ends of the bimetallic strip 9 are in contact with the left and right groups of conduction frames 10, the circuit is conducted by the second elastic sheet 6, the long spring 11, the conduction frames 10, the bimetallic strip 9, the short spring 12 and the first elastic sheet 7, when the voltage fluctuates or the short circuit state occurs, the current increases to cause the heating of the bimetallic strip 9, the bimetallic strip 9 is heated and expanded to deform, the bimetallic strip 9 is separated from the conduction frames 10, and the separated state refers to fig. 3;
when the bimetallic strip 9 needs to be contacted with the conduction frame 10 again, the bimetallic strip 9 can wait for cooling, the bimetallic strip 9 is restored to the initial state and is contacted with the conduction frame 10 again, or the rubber cap 3 is pressed down, the air inlet 16 is blocked by a finger during pressing, the rubber cap 3 is pressed and deformed, air in the rubber cap is blown to the surface of the bimetallic strip 9 along the reset tube 13, the bimetallic strip 9 is assisted in cooling, the reset tube 13 also moves downwards and pushes the bimetallic strip 9 to reset when the rubber cap 3 is pressed down, so that the bimetallic strip 9 is contacted with the conduction frame 10 again, and the conduction of a circuit is restored.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An instantaneous over-temperature over-current protector, comprising:
the novel sealing device comprises a shell (1), wherein a sealing cover (2) is arranged at the upper end of the shell (1), an exhaust hole (15) is formed in the upper surface of the sealing cover (2), an insulating rod (8) is arranged on the lower surface of the sealing cover (2), a first elastic sheet (7) is arranged on the surface of the insulating rod (8), and a second elastic sheet (6) is arranged on the bottom surface of the interior of the shell (1);
the conducting frames (10) are arranged in two groups and are positioned on the left side surface and the right side surface of the insulating rod (8), and the conducting frames (10) are electrically connected with the first elastic sheet (7) and the second elastic sheet (6);
the bimetallic strip (9), the bimetallic strip (9) penetrates through the insulating rod (8), and the left end and the right end of the bimetallic strip (9) are contacted with the conducting frame (10);
the reset tube (13), reset tube (13) runs through closing cap (2), and reset tube (13) are located bimetallic strip (9) tip top, closing cap (2) surface is equipped with two sets of rubber cap (3) of overlapping on reset tube (13) surface, and rubber cap (3) upper surface is equipped with air inlet (16).
2. The instantaneous over-temperature over-current protector according to claim 1, wherein: the surface of the reset tube (13) is sleeved with a reset spring (14), and the lower end of the reset spring (14) is propped against the surface of the sealing cover (2).
3. The instantaneous over-temperature over-current protector according to claim 1, wherein: the upper surface of the second elastic sheet (6) is provided with a long spring (11), the upper end of the long spring (11) is in contact with the left side conduction frame (10), the upper surface of the first elastic sheet (7) is provided with a short spring (12), and the upper end of the short spring (12) is in contact with the right side conduction frame (10).
4. A transient over-temperature over-current protector as defined in claim 3, wherein: the lower surface of the shell (1) is provided with two groups of wiring lugs (4), and the two groups of wiring lugs (4) are respectively connected with the second elastic piece (6) and the first elastic piece (7).
5. The instantaneous over-temperature over-current protector according to claim 1, wherein: the middle part of the lower surface of the shell (1) is provided with a fixing piece (5), and a fixing bolt is inserted into the surface of the fixing piece (5).
6. The instantaneous over-temperature over-current protector according to claim 1, wherein: the lower surface of the reset tube (13) is fixedly connected with a pressing ring (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321645427.8U CN220122610U (en) | 2023-06-27 | 2023-06-27 | Instant over-temperature over-current protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321645427.8U CN220122610U (en) | 2023-06-27 | 2023-06-27 | Instant over-temperature over-current protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220122610U true CN220122610U (en) | 2023-12-01 |
Family
ID=88894135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321645427.8U Active CN220122610U (en) | 2023-06-27 | 2023-06-27 | Instant over-temperature over-current protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220122610U (en) |
-
2023
- 2023-06-27 CN CN202321645427.8U patent/CN220122610U/en active Active
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