CN203910713U - Load overtemperature and overload protection device capable of transient quick-tripping - Google Patents
Load overtemperature and overload protection device capable of transient quick-tripping Download PDFInfo
- Publication number
- CN203910713U CN203910713U CN201420291088.2U CN201420291088U CN203910713U CN 203910713 U CN203910713 U CN 203910713U CN 201420291088 U CN201420291088 U CN 201420291088U CN 203910713 U CN203910713 U CN 203910713U
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- load
- moment
- heating board
- overload protection
- overtemperature
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Abstract
A load overtemperature and overload protection device capable of transient quick-tripping is provided. The protection device is equipped with a housing having an opening on one side. A heating plate is connected with an opening end of the housing. The heating plate and the housing are isolated by an insulator at a contact part. An inner side of the heating plate is connected with a bimetallic strip. A moving contact is disposed at a free end portion of the bimetallic strip. A fixed contact is disposed on an inner side, corresponding to the moving contact, of the housing. An input end wiring terminal connected with a power line is disposed on a side of the housing. An output end wiring terminal connected with a load is disposed on an end, corresponding to the input end wiring terminal, of the heating plate. When a short circuit or overload occurs to the load, the current change enables the heat amount of the heating plate to change, and the bimetallic strip quickly senses the temperature and springs up transiently, and thus a circuit is cut off when overload occurs. When the ambient temperature rises to a set temperature of the bimetallic strip, the bimetallic strip actions, and thus the circuit is cut off when overtemperature occurs. The load overtemperature and overload protection device is quick in sensing temperature, sensitive in reaction and high in controllability, and can effectively guarantee electrical safety of the load.
Description
[technical field]
The utility model relates to the overload overtemperature protection device of electrical equipment, particularly relates to a kind of load overtemperature overload protection arrangement that can rapid-action moment kick.
[background technology]
In the modern life, people are being widely used various electric type equipment.The components and parts of power consumption equipment or electronic circuit often open circuit because the reasons such as overload, overtemperature cause, overheated even damage, thereby affect the normal use of equipment.For this reason, general electrical equipment or electronic equipment are equipped with temperature switch or thermostat so that when device temperature surpasses normal value deenergization, protection device security.Yet; although used bimetal leaf as temperature sensitive switch device in existing electric current and temperature protector; but due to its heater, adopt the devices such as heating wire; make it heating slow; heating efficiency is low; and the function that therefore causes short circuit kick a little less than, after short circuit, need long period bimetal leaf to disconnect, so the security protection of this class safeguard protection device is poor.
[summary of the invention]
The utility model is intended to address the above problem, and provides a kind of temperature-sensitive rapid, is quick on the draw, and controllability is strong, can effectively proof load Electrical Safety moment kick load overtemperature overload protection arrangement.
For achieving the above object, the utility model provides the load overtemperature overload protection arrangement of a kind of moment kick, this protective device is provided with the shell that a side is uncovered, opening end at described shell is connected with heating board, the contact site of this heating board and shell is separated by insulator, described shell inner side is connected with bimetal leaf, the free end end of this bimetal leaf is provided with moving contact, the heating board inner side corresponding with this moving contact is connected with fixed contact, one side of described shell is provided with the input binding post of outward extending connecting power line, one end corresponding with described input binding post on described heating board is provided with the output end wiring terminal being connected with load, and
When short circuit or when overload appear in load, curent change makes the moment heating of described heating board, and heat is delivered to rapidly to bimetal leaf, makes described bimetal leaf temperature-sensitive and moment upsprings, thereby when overload, cuts off circuit; When ambient temperature is elevated to the design temperature of bimetal leaf, bimetal leaf action, thereby when overtemperature open circuit.
Heating board is the tabular heater of being made by electrothermal alloy material, and on heating board, compartment of terrain is provided with a plurality of for controlling the strip through-hole of caloric value.
The caloric value of described heating board is controlled by adjusting size, shape or the quantity of described through hole.
Described electrothermal alloy material is Aludirome or nichrome.
Described insulator is insulating paper.
On described heating board, be provided with the protuberance of projection to the inside, described fixed contact welding or riveted joint are fixed on described protuberance.
On described shell, be provided with the turning point of turnover to the inside, the end of described bimetal leaf is fixed between described turning point and fixed block by fixed block.
Contribution of the present utility model is, a little less than it efficiently solves the function of existing temperature switch or thermostat short circuit kick, and the problem such as security protection is poor.The utility model is owing to being provided with tabular heater; therefore heating area and caloric value are larger, generate heat more balanced, make bimetal leaf temperature-sensitive rapider; realized the moment kick when there is overtemperature overload, thereby the controllability and the fail safe that have improved protective device.The size that the utility model also can precisely be controlled caloric value by shape size and the quantity of the through hole on tabular heater, thereby can effectively coordinate bimetal leaf precisely to control the overload protection time, play better protective effect.
[accompanying drawing explanation]
Fig. 1 is structure cutaway view of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is heating board structural representation of the present utility model.
[embodiment]
The following example is to further explanation of the present utility model and explanation, and the utility model is not constituted any limitation.
Consult Fig. 1; moment of the present utility model, the load overtemperature overload protection arrangement 100 of kick comprised shell 10, heating board 20, insulator 30 and bimetal leaf 40; this device can be connected between external power source and load; or be serially connected in the power input in load; for cutting off circuit when loading on when running electric current or temperature surpass set point, to protect power consumption equipment.Described load can be household electrical appliance or other power consumption equipment.
As shown in Figure 1 and Figure 2; this, load overtemperature overload protection arrangement 100 of kick was provided with the shell 10 that a side is uncovered moment; this shell is the conducting metal shell of cuboid, is provided with the input binding post 11 that stretches out and form in one side, and it is for connecting power line.At the opening end of described shell 10, with screw, be connected with the heating board 20 corresponding with the shape of this opening end and size, this heating board 20 is tabular heaters of being made by electrothermal alloy material, in the present embodiment, described electrothermal alloy material is Aludirome or nichrome.In the utility model, this heater is a tabular electrothermal alloy heater identical with shell longitudinal cross-section area, and its heating area that has significantly increased heater is larger, and it is more balanced that heat is distributed.As shown in Figure 3, for the caloric value to this heater is precisely controlled, on heating board 20, compartment of terrain is provided with a plurality of strip through-holes 21, by adjusting size, shape or the quantity of described through hole 21, can precisely control the caloric value of described heating board 20, the concrete numerical value of the size of this through hole 21, shape or quantity can be determined and be adjusted by designing and testing.In the present embodiment, the Width compartment of terrain at heating board 20 middle parts along heating board is arranged with three strip through holes 21, and obviously, the size of through hole 21, shape or quantity are not limited to this, and it can be adjusted according to design parameter.As shown in Figure 1, in described heating board 20 and the contact site of shell 10, insulator 30 is housed, it is by heating board 20 and shell 10 insulation isolation.In the present embodiment, described insulator 30 is insulating paper, and obviously, it can be also other insulating material.As shown in Figure 1, Figure 3, one end corresponding with the input binding post 11 of shell on described heating board 10 is provided with output end wiring terminal 12, for being connected with load.
As Fig. 1, in described shell 10 inner sides, be connected with bimetal leaf 40, it is to vary with temperature the sheet metal that the temperature-sensitive of dilatancy is used.In the present embodiment, this bimetal leaf 40 is bar shaped plates of being made by nickel-manganese.One end of this bimetal leaf 40 is fixed on described shell 10 inner sides, as Fig. 1, is provided with the turning point 13 of turnover to the inside on described shell 10, and the end of described bimetal leaf 40 is fixed between described turning point 13 and fixed block 43 by fixed block 43 welding.The other end of this bimetal leaf 40 is free end, and its free end end is riveted or is welded with moving contact 41, and heating board 20 inner sides corresponding with these moving contact 41 positions are connected with fixed contact 42.On described heating board 20, be provided with the protuberance 22 of projection to the inside, described fixed contact 42 welding or riveted joint are fixed on described protuberance 22.In the present embodiment, described moving contact 41 and fixed contact 42 are silver alloy contact.At load temperature and electric current, during in normal operating conditions, described moving contact 41 contacts closed with fixed contact 42, between protective device 100 and load in conducting state.When load temperature and electric current reach set point, bimetal leaf 40 temperature distortions and upspringing, are separated moving contact 41 and fixed contact 42, and between protective device 100 and load, circuit is in off-state.
Operation principle of the present utility model as shown in Figure 1, when load occurs short circuit or when overload and while causing electric current excessive, curent change makes described heating board 20 moment heating, and heat is delivered to rapidly to bimetal leaf 40, make the rapid temperature distortion of bimetal leaf 40 and moment upsprings, and separated with fixed contact 42, reach the effect that moment disconnects, thereby cut off circuit when short circuit or overload.In another case, when ambient temperature is elevated to the design temperature of bimetal leaf 40, also make the rapid temperature distortion of bimetal leaf 40 and moment upsprings, thus when overtemperature open circuit.
By this, the utility model is by arranging large-area tabular heater, and can precisely control the caloric value of heating board, make to occur short circuit or when overload and while causing electric current excessive when load, described heating board 20 moment heating, and heat is delivered to rapidly to bimetal leaf 40, make the rapid temperature distortion of bimetal leaf 40 and moment upsprings, and separated with fixed contact 42, reach the effect that moment disconnects, thereby in short circuit or when overload, cut off circuit, therefore the effective electrical safety of proof load at overtemperature or while transshipping.
Although the utility model is disclosed by above embodiment; but protection range of the present utility model is not limited to this; do not departing under the condition of the utility model design, the distortion that above each member is done, replacement etc. all will fall within the scope of claim of the present utility model.
Claims (7)
- One kind moment kick load overtemperature overload protection arrangement, it is characterized in that, this protective device (100) is provided with the shell that a side is uncovered (10), opening end at described shell (10) is connected with heating board (20), this heating board (20) is separated by insulator (30) with the contact site of shell (10), described shell (10) inner side is connected with bimetal leaf (40), the free end end of this bimetal leaf (40) is provided with moving contact (41), heating board (20) inner side corresponding with this moving contact (41) is connected with fixed contact (42), one side of described shell (10) is provided with the input binding post (11) of outward extending connecting power line, the upper one end corresponding with described input binding post (11) of described heating board (20) is provided with the output end wiring terminal (12) being connected with load, andWhen short circuit or when overload appear in load, curent change makes described heating board (20) moment heating, and heat is delivered to rapidly to bimetal leaf, makes described bimetal leaf (40) temperature-sensitive and moment upsprings, thereby when overload, cuts off circuit; When ambient temperature is elevated to the design temperature of bimetal leaf (40), bimetal leaf (40) action, thereby when overtemperature open circuit.
- Moment as claimed in claim 1 kick load overtemperature overload protection arrangement; it is characterized in that; described heating board (20) is the tabular heater of being made by electrothermal alloy material, in the upper compartment of terrain of heating board (20), is provided with a plurality of for controlling the strip through-hole (21) of caloric value.
- Moment as claimed in claim 2 kick load overtemperature overload protection arrangement, it is characterized in that, the caloric value of described heating board (20) is controlled by adjusting size, shape or the quantity of described through hole (21).
- Moment as claimed in claim 2 kick load overtemperature overload protection arrangement, it is characterized in that, described electrothermal alloy material is Aludirome or nichrome.
- Moment as claimed in claim 1 kick load overtemperature overload protection arrangement, it is characterized in that, described insulator (30) is insulating paper.
- Moment as claimed in claim 3 kick load overtemperature overload protection arrangement; it is characterized in that; on described heating board (20), be provided with the protuberance (22) of projection to the inside, described fixed contact (42) welding or riveted joint are fixed on described protuberance (22).
- Moment as claimed in claim 1 kick load overtemperature overload protection arrangement; it is characterized in that; on described shell (10), be provided with the turning point (13) of turnover to the inside, the end of described bimetal leaf (40) is fixed between described turning point (13) and fixed block (43) by fixed block (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291088.2U CN203910713U (en) | 2014-06-03 | 2014-06-03 | Load overtemperature and overload protection device capable of transient quick-tripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291088.2U CN203910713U (en) | 2014-06-03 | 2014-06-03 | Load overtemperature and overload protection device capable of transient quick-tripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910713U true CN203910713U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420291088.2U Expired - Fee Related CN203910713U (en) | 2014-06-03 | 2014-06-03 | Load overtemperature and overload protection device capable of transient quick-tripping |
Country Status (1)
| Country | Link |
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| CN (1) | CN203910713U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064413A (en) * | 2014-06-03 | 2014-09-24 | 东莞市凯恩电子科技有限公司 | Suddenly jump load over-temperature overload protection device |
-
2014
- 2014-06-03 CN CN201420291088.2U patent/CN203910713U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064413A (en) * | 2014-06-03 | 2014-09-24 | 东莞市凯恩电子科技有限公司 | Suddenly jump load over-temperature overload protection device |
| CN104064413B (en) * | 2014-06-03 | 2017-10-27 | 东莞市楷亿电子科技有限公司 | The load overtemperature overload protection arrangement of moment kick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20150603 |
|
| EXPY | Termination of patent right or utility model |