CN104064413A - Suddenly jump load over-temperature overload protection device - Google Patents

Suddenly jump load over-temperature overload protection device Download PDF

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Publication number
CN104064413A
CN104064413A CN201410242801.9A CN201410242801A CN104064413A CN 104064413 A CN104064413 A CN 104064413A CN 201410242801 A CN201410242801 A CN 201410242801A CN 104064413 A CN104064413 A CN 104064413A
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China
Prior art keywords
shell
moment
heating board
load
temperature
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Application number
CN201410242801.9A
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Chinese (zh)
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CN104064413B (en
Inventor
马永红
卢子忱
何志强
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Dongguan City Kai billion electronic technology Co. Ltd.
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Dongguan Kain Electronic Science & Technology Co Ltd
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Priority to CN201410242801.9A priority Critical patent/CN104064413B/en
Publication of CN104064413A publication Critical patent/CN104064413A/en
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Publication of CN104064413B publication Critical patent/CN104064413B/en
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Abstract

The invention discloses a suddenly jump load over-temperature overload protection device. The protection device is provided with a shell, wherein one side of the shell is open, the open end of the shell is connected with a heating plate, the contact parts of the heating plate and the shell are separated through an insulator, the inner side of the shell is connected with a bimetallic strip, the end of the free end of the bimetallic strip is provided with a movable contact, the inner side of the heating plate is connected with a static contact corresponding to the movable contact, an input end wiring terminal connected with a power line is arranged at one side of the shell, and an output end wiring terminal connected with a load is arranged at the end of the heating plate corresponding to the input end wiring terminal. When the load appears a short circuit phenomenon or an overload phenomenon, current is changed to enable the heating amount of the heating plate to be changed and enable the bimetallic strip to quickly sense the temperature and bounce instantaneously so as to cut off the circuit under the overload; when the environment temperature increases to arrive at the set temperature of the bimetallic strip, the bimetallic strip acts to break the circuit under the over-temperature state. The protection device senses the temperature quickly, the reaction is sensitive, the controllability is strong, and the load electricity safety is guaranteed effectively.

Description

Moment kick load overtemperature overload protection arrangement
[technical field]
The present invention relates to the overload overtemperature protection device of electrical equipment, particularly relate 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, to make deenergization in the time that device temperature exceedes normal value, and protection device security.But; although used bimetal leaf as temperature sensitive switch device in existing electric current and temperature protector; but adopt the devices such as heating wire due to its heater; 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, therefore the security protection of this class safeguard protection device is poor.
[summary of the invention]
The present invention 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 invention 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, on described heating board, one end corresponding with described input binding post 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 described heating board moment heating, and heat is delivered to rapidly to bimetal leaf, makes described bimetal leaf temperature-sensitive and moment upsprings, thereby in the time of overload, cuts off circuit; In the time that ambient temperature is elevated to the design temperature of bimetal leaf, bimetal leaf action, thereby in the time of overtemperature open circuit.
Heating board is the tabular heater of being made up of electrothermal alloy material, and on heating board, compartment of terrain is provided with multiple for controlling the strip through-hole of caloric value.
The caloric value of described heating board is controlled by size, shape or the quantity of adjusting 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 invention 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 present invention is owing to being provided with tabular heater, and therefore heating area and caloric value are larger, generates heat more balanced, makes bimetal leaf temperature-sensitive rapider, has realized the moment kick in the time there is overtemperature overload, thereby the controllability and the fail safe that have improved protective device.The present invention also can precisely control by the shape size of the through hole on tabular heater and quantity the size of caloric value, thereby can effectively coordinate bimetal leaf precisely to control the overload protection time, plays better protective effect.
[brief description of the drawings]
Fig. 1 is structure cutaway view of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is heating board structural representation of the present invention.
[embodiment]
The following example is further explanation of the present invention, and the present invention is not constituted any limitation.
Consult Fig. 1; moment of the present invention, 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 exceed 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.Be connected with the heating board 20 corresponding with the shape of this opening end and size at the opening end of described shell 10 with screw, this heating board 20 is tabular heaters of being made up of electrothermal alloy material, in the present embodiment, described electrothermal alloy material is Aludirome or nichrome.In the present invention, 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 multiple 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 size, shape or the quantity of this through hole 21 can be determined and be adjusted by designing and testing.In the present embodiment, be arranged with three strip through holes 21 at heating board 20 middle parts along the Width compartment of terrain of heating board, 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 the isolation of insulating of heating board 20 and shell 10.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, on described heating board 10, one end corresponding with the input binding post 11 of shell is provided with output end wiring terminal 12, for being connected with load.
As Fig. 1, be connected with bimetal leaf 40 in described shell 10 inner sides, 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 up of 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 welds or rivets and is 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.In the time that 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 invention 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 separate with fixed contact 42, reach the effect that moment disconnects, thereby cut off circuit in the time of short circuit or overload.In another case, in the time that 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 in the time of overtemperature open circuit.
By this, the present invention 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 separate with fixed contact 42, reach the effect that moment disconnects, thereby cut off circuit in short circuit or when overload, therefore the effective electrical safety of proof load at overtemperature or while transshipping.
Although the present invention is disclosed by above embodiment, protection scope of the present invention is not limited to this, is not departing under the condition of the present invention's design, and distortion, the replacement etc. that above each member is done all will fall within the scope of claim of the present invention.

Claims (7)

  1. 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), be connected with heating board (20) at the opening end of described shell (10), 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, and
    When short circuit or when overload appear in load, curent change makes the heating of described heating board (20) moment, and heat is delivered to rapidly to bimetal leaf, makes described bimetal leaf (40) temperature-sensitive and moment upsprings, thereby in the time of overload, cuts off circuit; In the time that ambient temperature is elevated to the design temperature of bimetal leaf (40), bimetal leaf (40) action, thereby in the time of overtemperature open circuit.
  2. 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 up of electrothermal alloy material, is provided with multiple for controlling the strip through-hole (21) of caloric value in the upper compartment of terrain of heating board (20).
  3. 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 size, shape or the quantity of adjusting described through hole (21).
  4. 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.
  5. Moment as claimed in claim 1 kick load overtemperature overload protection arrangement, it is characterized in that, described insulator (30) is insulating paper.
  6. 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).
  7. 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).
CN201410242801.9A 2014-06-03 2014-06-03 The load overtemperature overload protection arrangement of moment kick Active CN104064413B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410242801.9A CN104064413B (en) 2014-06-03 2014-06-03 The load overtemperature overload protection arrangement of moment kick

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410242801.9A CN104064413B (en) 2014-06-03 2014-06-03 The load overtemperature overload protection arrangement of moment kick

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CN104064413A true CN104064413A (en) 2014-09-24
CN104064413B CN104064413B (en) 2017-10-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1162187A (en) * 1996-01-29 1997-10-15 打矢恒温器株式会社 Overheat protector
CN201514907U (en) * 2009-10-23 2010-06-23 江苏辉能电气有限公司 Thermal tripping mechanism of low-voltage circuit breaker
CN201611631U (en) * 2009-09-14 2010-10-20 杭州富阳华裕控制电器厂 Current temperature protector
CN203910713U (en) * 2014-06-03 2014-10-29 东莞市凯恩电子科技有限公司 Load overtemperature and overload protection device capable of transient quick-tripping

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1162187A (en) * 1996-01-29 1997-10-15 打矢恒温器株式会社 Overheat protector
CN201611631U (en) * 2009-09-14 2010-10-20 杭州富阳华裕控制电器厂 Current temperature protector
CN201514907U (en) * 2009-10-23 2010-06-23 江苏辉能电气有限公司 Thermal tripping mechanism of low-voltage circuit breaker
CN203910713U (en) * 2014-06-03 2014-10-29 东莞市凯恩电子科技有限公司 Load overtemperature and overload protection device capable of transient quick-tripping

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Application publication date: 20140924

Assignee: Dongguan City Kai billion electronic technology Co. Ltd.

Assignor: Dongguan KAIN Electronic Science & Technology Co., Ltd.

Contract record no.: 2015990000829

Denomination of invention: Suddenly jump load over-temperature overload protection device

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Assignor: Dongguan KAIN Electronic Science & Technology Co., Ltd.

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