CN100414660C - Circuit protector with dual temperature power-off induction - Google Patents
Circuit protector with dual temperature power-off induction Download PDFInfo
- Publication number
- CN100414660C CN100414660C CNB2005100632820A CN200510063282A CN100414660C CN 100414660 C CN100414660 C CN 100414660C CN B2005100632820 A CNB2005100632820 A CN B2005100632820A CN 200510063282 A CN200510063282 A CN 200510063282A CN 100414660 C CN100414660 C CN 100414660C
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- flat spring
- circuit
- contact flat
- connector
- conducting strip
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Abstract
The present invention relates to a circuit protector with dual temperature power-off induction, which is provided with two temperature induction breaking devices which are independent. When current is overloaded, a circuit is overheated, or the environment temperature used is too high, the two temperature induction breaking devices can independently induct temperature so that the circuit is completely powered off. The present invention has the effect of dual temperature induction power-off, the danger of circuit overheating or wire firing caused by current overload is avoided, and the aim of the safety for using electricity is ensured.
Description
Technical field
The invention relates to a kind of circuit brake of double-temperature-sensing cut-off, it is a kind ofly at circuit loop one contact flat spring and a thermal cutout device to be set, and forms the temperature-sensing cut-off devices of two independent runnings; At current overload, circuit is overheated or the ambient temperature used when too high, utilizes contact flat spring to be heated and be out of shape the back-flexing escape, or the fusible alloy fusion of thermal cutout device makes thermal cutout device escape become the circuit brake of circuit breaker (OFF) state.
Background technology
The use of electricity has become modern humans society and can not the missing link, and the equipment of electrification is around around the life, especially computerization, informationalized industry, at home, traffic, education, amusement or the like, do not have electricity especially and do not become.
The modern life has easily been brought up in the use of electric power and equipment thereof, and the electricity consumption that makes relative, safety also is that the modern have to be cautious.
In general, in the integrated circuit loop that electricity is provided, be provided with the master switch of power supply control, usually master switch is the state of energising (ON), fuse or circuit breaker are set on it, when the electrical equipment that uses in the circuit loop too much causes situations such as current overload or short circuit, circuit be overheated, blown fuse or circuit breaker escape and form (OFF) state that opens circuit in integrated circuit loop.
In addition, in the integrated circuit loop, each other circuit loop arranged again, establish the switch of control in the circuit loop in addition again, this switch mainly is to carry out energising (ON) and outage (OFF) two kinds of actuating travels of current circuit out of the ordinary, for strengthening the fail safe of electricity consumption, many switches also have the function of current overload automatic escape outage when overheated, avoid the fuse in integrated circuit loop when current overload or circuit breaker real time reaction not to cut off the power supply or escape, and the danger that electric wire cocks off takes place.
Except aforementioned integrated circuit loop and circuit loop out of the ordinary; utilize fuse; the overheated automatic escape of the current overload of circuit breaker and switch; outside the cut-off structure; the single electronics of part; electric equipment products; as: higher-priced electronic product; the electric heating appliance that the information equipment of deal with data or power consumption are higher etc.; also distinctly be provided with the circuit protection structure of temperature-sensing cut-off device; with this single electronics of protection; electric equipment products; at this single electronics; the current overload of electric equipment products own; when circuit is overheated; induction in real time and cutting off the power supply; avoid burning product itself; can avoid because of single electronics simultaneously; the problem of electric equipment products and cause each other circuit loop; the current overload in integrated circuit loop; overheating conditions causes circuit loop; the problem that other power consumption equipment in the integrated circuit loop can't operate.
Use is at the temperature-sensing cut-off protector commonly used of single electronic product, as Fig. 1～shown in Figure 2, it is that a contact flat spring (201) is set in circuit, this contact flat spring (201) is made as bending, bounce being heated back distortion and back-flexing, one of contact flat spring end fixedly is mounted on the first terminal (202), the other end of contact flat spring (201) is a free end, the free end group is established first conductiving point (203), establish second conductiving point (205) in the fixing group of second terminal (204) in addition, second conductiving point (205) is corresponding to first conductiving point (203); During enforcement, contact flat spring (201) is to the direction bending of second terminal (204), the circuit communication state that second conductiving point (205) of free-ended first conductiving point of contact flat spring (201) (203) and second terminal (204) is kept in touch, as shown in Figure 1; When current overload, contact flat spring (201) temperature distortion and back-flexing and bounce, free-ended first conductiving point of contact flat spring (201) (203) and second conductiving point (205) are separated, become the state of circuitry cuts (OFF), as shown in Figure 2, can guarantee that the circuit of electronic product own avoids burning.Yet the shortcoming of temperature-sensing cut-off protector commonly used is:
When (a) making contact flat spring (201), and thickness, flexibility and the architectural characteristic that can't guarantee each sheet contact flat spring (201) are identical, so be difficult to effectively control contact flat spring (201) in the reaction temperature value of back distortion and back-flexing spring of being heated, the temperature value error of setting induction is bigger.
(b) contact flat spring (201) is not high in the acuity of be heated back distortion and back-flexing spring, can't in time bring into play the protection of this electronic product when overload is overheated.
(c) contact flat spring (201) escape outage in real time or escape are incomplete, make circuit still be current conductive state, and circuit continues overheated and causes the danger of this electronic product and integrated circuit.When the current overload circuit is overheated, if contact flat spring (201) is half escape state, rebound "on" position more again when contact flat spring (201) cools off, the formation spark that continues to switch on repeatedly, cuts off the power supply causes danger; And the electronics in the overall current loop, electric equipment cause the electric current instability because of switching on repeatedly, cutting off the power supply, and cause this equipment or can't normal operation, or shorten useful life, even infringement fully.
Summary of the invention
The objective of the invention is to solve temperature-sensing cut-off protector commonly used, only to have one be the escape breaker device of temperature sense with the contact flat spring; can't effectively set the temperature sensor value of outage; and when current overload is overheated; if contact flat spring escape, escape in real time is incomplete or can't escape the time; circuit continues conducting; circuit produces spark or energising or outage repeatedly; cause the electric current instability; cause electronic product or can't normal operation or shorten useful life, even the variety of issue of infringement fully.
The present invention is a kind of circuit brake of double-temperature-sensing cut-off, and it is that a contact flat spring and a thermal cutout device are set between two contact terminals of circuit loop, and wherein, this thermal cutout device is provided with connector and fusible alloy; At current overload, when circuit ambient temperature overheated or that use is too high, this contact flat spring is heated and is out of shape the back-flexing escape, form first kind circuit breaker state, in addition, work as current overload, circuit ambient temperature overheated or that use is too high, and aforesaid contact flat spring fails maybe can't be out of shape the back-flexing escape in real time and when cutting off the power supply, the temperature of circuit loop continues to raise, the fusible alloy temperature of thermal cutout device rises and the fusion fracture, make the connector escape, form second kind circuit breaker state, utilize two independently temperature-sensing cut-off devices, guarantee that circuit loop becomes outage (OFF) state person fully.
The present invention is a kind of circuit brake of double-temperature-sensing cut-off; its main purpose is to be situated between by two temperature sense trippers independently; when current overload or circuit are overheated; can independent separately temperature sensor; make circuit loop cut off the power supply fully (OFF); have the dual temperature sense effect that opens circuit, guarantee aim of safe power utilization.
Another object of the present invention is to, when current overload and circuit is overheated, under the general normal condition, the reverse escape by the contact flat spring temperature distortion earlier, make circuit loop outage (OFF), need not to utilize the fusible alloy of thermal cutout device to rupture and reach circuit loop outage (OFF); After getting rid of circuit loop overload factor, can make contact flat spring be returned to the state of energising (ON), circuit brake is still sustainable to be used repeatedly, easy to use, need not new clothes one circuit brake, saves time, and reduces user's expenditure.
A further object of the present invention is; when current overload and circuit is overheated; contact flat spring in real time escape, half escape, can't escape or contact flat spring when cooling off the energising of rebound voluntarily (ON) state; the fusible alloy by the thermal cutout device of then further the being situated between characteristic persistently overheating, the fusion fracture that is bound to that is bound to of being heated; make circuit loop open circuit fully (OFF); guarantee safety utilization of electric power, and the functional characteristic of the various electrical appliances in the protective circuit loop.
Description of drawings
Fig. 1 is the assembled sectional view of common scheme, the state of the conducting (ON) of its expression common scheme;
Fig. 2 is the assembled sectional view of common scheme, the state of the escape outage (OFF) of its expression common scheme;
Fig. 3 is the assembled sectional view of the embodiment of the invention, the state of the conducting (ON) of its expression embodiment of the invention;
Fig. 4 is the assembled sectional view of the embodiment of the invention, the escape outage (OFF) of the general state of its expression embodiment of the invention;
Fig. 5 is the three-dimensional exploded view of embodiment of the invention primary clustering;
Fig. 6 is the assembled sectional view of the embodiment of the invention, its expression embodiment of the invention is when current overload, contact flat spring is timely escape or can't the escape outage time, is heated and the fusion fracture by the fusible alloy (122) of thermal cutout device, forms circuit loop outage (OFF);
Fig. 7 is the assembled sectional view of the embodiment of the invention two, conducting (ON) state of its expression embodiment two;
Fig. 8 is the assembled sectional view of the embodiment of the invention two, and its expression embodiment of the invention two is at escape outage (OFF) state of general state;
Fig. 9 is the assembled sectional view of the embodiment of the invention two, its expression embodiment of the invention two is when current overload, contact flat spring is timely escape or can't the escape outage time, is heated and the fusion fracture by the fusible alloy (122 ') of thermal cutout device, forms the state of outage (OFF).
Among the figure
10 box bodys, 11 contact flat springs, 111 first conductiving points, 12 thermal cutout devices, 121 connectors, 121 ' connector, 122 fusible alloys, 122 ' fusible alloy line, 13 first contact terminals, 131 rivets, 14 second contact terminals, 141 rivets, 15 conducting strips, 151 second conductiving points, 201 contact flat springs, 202 the first terminals, 203 first conductiving points, 204 second terminals, 205 second conductiving points.
Embodiment
For describing purpose of the present invention, feature and effect in detail,, the present invention is described in detail as follows now by following preferred embodiment and conjunction with figs.:
As Fig. 3～shown in Figure 4, be the assembled sectional view of the embodiment of the invention, the energising (ON) of its expression embodiment of the invention, general state outage (OFF), Fig. 5 is the part three-dimensional exploded view of the embodiment of the invention; The circuit brake of a kind of double-temperature-sensing cut-off of the present invention, it consists predominantly of a contact flat spring 11, a thermal cutout device 12; Wherein,
This contact flat spring 11 is a rubber-like metal lamellar body, and it forms the curved arc shape, can beat distortion back-flexing and bounce to another side when contact flat spring 11 is heated to the two sides of lamellar body; This contact flat spring 11 can be the composition metal thin slice; One end fixed combination of contact flat spring 11 is to fix with rivet 131 riveteds in first contact terminal 13 in the present embodiment, and first contact terminal 13 is assembled in hollow box body 10; The free end group of contact flat spring 11 is established first conductiving point 111; The corresponding group in the below of contact flat spring 11 is established a conducting strip 15, and an end group of conducting strip 15 is established first conductiving point 111 of second conductiving point, 151, the second conductiving points 151 corresponding to contact flat spring 11.
This thermal cutout device 12 is to be made of a connection piece 121 and fusible alloy 122; Wherein, this connector 121 is the elastic metallic of curved arc shape, and connector 121 1 end fixed combination are to fix with rivet 141 riveteds in second contact terminal 14 in the present embodiment; Between connector 121 other ends and aforementioned conducting strip 15 ends a bit of distance is arranged apart, as shown in Figure 6, during combination, with pushing and pressing contact conducting strip 15 ends, connector 121 ends, with fusible alloy 122 connector 121 ends are connected with conducting strip 15 fusions again, make connector 121 ends have the elastic force that separates with conducting strip 15; Second contact terminal 14 is assembled in hollow box body 10.
The present invention is at general enforcement state, be that contact flat spring 11 is bent downwardly, first conductiving point 111 of contact flat spring 11 and second conductiving point 151 of conducting strip 15 are kept in touch, form electric current by first contact terminal 13 circuit loop connection (ON) state, as shown in Figure 3 via contact flat spring 11, first conductiving point 111, second conductiving point 151, conducting strip 15, fusible alloy 122, connector 121 to second contact terminals 14.
At current overload, circuit is overheated or the ambient temperature used when too high, this contact flat spring 11 is heated and is out of shape the back-flexing escape that makes progress, first conductiving point 111 separates with second conductiving point 151, makes circuit (OFF) state that becomes to open circuit, as shown in Figure 4.
In addition, at current overload, circuit is overheated or the ambient temperature used when too high, if this contact flat spring 11 is failed in real time or can't temperature distortion, back-flexing makes progress escape and when cutting off the power supply (OFF), the fusible alloy 122 of this thermal cutout device 12 promptly heats up because of continuing to be heated, after arriving the temperature of setting, fusible alloy 122 fusions fracture, connector 121 flicks downwards with conducting strip 15 with elastic force and separates, as shown in Figure 6, form outage fully (OFF) state of circuit loop.
The present invention at current overload, circuit is overheated or the ambient temperature used when too high; Jie makes progress escape and cut off the power supply (OFF) by contact flat spring 11 temperature distortion back-flexings; and fusible alloy 122 fusions of thermal cutout device 12 are ruptured and connector 121 is separated with conducting strip 15; form circuit loop outage (OFF); have two independently temperature-sensing cut-off settings; be a kind of circuit brake of double-temperature-sensing cut-off, can guarantee the effect of the outage fully (OFF) of circuit loop.
In addition, Fig. 7, Fig. 8 and Fig. 9 are energising (ON), first kind of state outage (OFF) and second kind of state outage (OFF) state cutaway view of the embodiment of the invention two; Wherein, the start principle of embodiment two is identical with the state and the previous embodiment of outage (OFF), and just the thermal cutout device 12 ' structure in the structure of this embodiment two is different from the thermal cutout device 12 of previous embodiment.
The thermal cutout device 12 ' of this embodiment two is to be made of a connection piece 121 ' and fusible alloy 122 '; Wherein, this connector 121 ' one side butt one elastic component 123, this elastic component 123 is a helical spring in the present embodiment; At connector 121 ' both ends respectively with aforementioned conducting strip 15, between second contact terminal 13 a bit of distance is arranged apart, with reference to Fig. 9, during combination, pushing and pressing connector 121 ' makes its two ends butt conducting strip 15 respectively, second contact terminal, 14 ends, with fusible alloy 122 ' with connector 121 ' and conducting strip 15, the fusion of second contact terminal, 14 ends connects, simultaneously, these elastic component 123 connected pieces 121 ' compress and produce an elastic force of outwards upholding, the elastic force ejection connector 121 ' of this elastic component 123 outwards possesses and conducting strip 15 connector 121 ', the strength that second contact terminal 14 separates.
During enforcement, contact flat spring 11 starts of embodiment two are entirely identical to previous embodiment; At current overload, circuit is overheated or the ambient temperature used when too high, this contact flat spring 11 is heated and is out of shape the back-flexing escape that makes progress, first conductiving point 111 separates with second conductiving point 151, makes circuit (OFF) state that becomes to open circuit, as shown in Figure 8.
In addition, embodiment two current overload, circuit is overheated or the too high situation of ambient temperature used under, if this contact flat spring 11 is failed in real time or can't temperature distortion, back-flexing makes progress escape and when cutting off the power supply (OFF), the fusible alloy 122 ' of this thermal cutout device 12 ' heats up because of continuing to be heated, after arriving the temperature of setting, fusible alloy 122 ' fusion fracture, elastic component 123 upwards flicks with conducting strip 15, second contact terminal 14 with elastic force ejection connector 121 ' and separates, as shown in Figure 9, form outage fully (OFF) state of circuit loop.
From the above mentioned, assembly structure of the present invention, start relation, true tool practical effect, and be new design not seen before, have effect and progressive.
Below the present invention is had been described in detail, the above only is preferred embodiment of the present invention, can not limit scope of the invention process certainly.Be all equivalent variations of carrying out according to the claimed scope of the present invention and modification etc., all should belong in the patent covering scope of the present invention.
Claims (3)
1. the circuit brake of a double-temperature-sensing cut-off is characterized in that, includes a contact flat spring, a thermal cutout device; Wherein,
This contact flat spring is a rubber-like metal lamellar body, and it forms the curved arc shape, can beat distortion back-flexing and bounce to another side when contact flat spring is heated to the two sides of lamellar body; One end fixed combination of contact flat spring is in first contact terminal, and the free end group of contact flat spring is established first conductiving point; The corresponding group of contact flat spring is established a conducting strip, and the conducting strip group is established second conductiving point, and second conductiving point is corresponding to first conductiving point of contact flat spring;
This thermal cutout device is to be made of a connection piece and fusible alloy; Wherein, this connector one side butt one elastic component, respectively and between the conducting strip, second contact terminal a bit of distance is arranged apart at the connector both ends, during combination, the pushing and pressing connector makes its two ends butt conducting strip, second contact terminal respectively, with fusible alloy connector is connected with conducting strip, the fusion of the second contact terminal end, this elastic component ejection connector is outside, and connector possesses the strength of separating with conducting strip, second contact terminal;
In general user mode, the "on" position that first conductiving point of contact flat spring and second conductiving point keep in touch; When current overload or circuit were overheated, this contact flat spring was heated and is out of shape the back-flexing escape, and first conductiving point separates with second conductiving point, makes circuit become off state;
Under current overload or circuit overheating conditions, when cutting off the power supply as if failing maybe can not be out of shape the back-flexing escape in real time when contact flat spring, the intensification that continues to be heated of the fusible alloy of this thermal cutout device, make fusible alloy fusion fracture, connector separates with conducting strip, forms the complete off-position of circuit loop.
2. the circuit brake of double-temperature-sensing cut-off as claimed in claim 1 is characterized in that, this contact flat spring is the composition metal thin slice.
3. the circuit brake of double-temperature-sensing cut-off as claimed in claim 1 is characterized in that, this connector is the elastic metallic of curved arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100632820A CN100414660C (en) | 2005-04-07 | 2005-04-07 | Circuit protector with dual temperature power-off induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100632820A CN100414660C (en) | 2005-04-07 | 2005-04-07 | Circuit protector with dual temperature power-off induction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1845279A CN1845279A (en) | 2006-10-11 |
| CN100414660C true CN100414660C (en) | 2008-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100632820A Expired - Fee Related CN100414660C (en) | 2005-04-07 | 2005-04-07 | Circuit protector with dual temperature power-off induction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100414660C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229236A (en) * | 2016-08-22 | 2016-12-14 | 马忠良 | Hot release unit and surge suppressor |
| CN109638532B (en) * | 2018-11-06 | 2022-06-17 | 九阳股份有限公司 | Short-circuit-proof electric connector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032088A (en) * | 1987-09-18 | 1989-03-29 | 东部电气株式会社 | Protector |
| CN1230816A (en) * | 1998-03-31 | 1999-10-06 | 德克萨斯仪器股份有限公司 | Motor protector apparatus |
| CN2622848Y (en) * | 2003-04-09 | 2004-06-30 | 江苏常恒集团控制电器有限公司 | Built-in insert type protector of wholly-sealed compressor |
-
2005
- 2005-04-07 CN CNB2005100632820A patent/CN100414660C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032088A (en) * | 1987-09-18 | 1989-03-29 | 东部电气株式会社 | Protector |
| CN1230816A (en) * | 1998-03-31 | 1999-10-06 | 德克萨斯仪器股份有限公司 | Motor protector apparatus |
| CN2622848Y (en) * | 2003-04-09 | 2004-06-30 | 江苏常恒集团控制电器有限公司 | Built-in insert type protector of wholly-sealed compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1845279A (en) | 2006-10-11 |
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