CN2710298Y - Temp. controller with overheat protection - Google Patents
Temp. controller with overheat protection Download PDFInfo
- Publication number
- CN2710298Y CN2710298Y CN 200420073511 CN200420073511U CN2710298Y CN 2710298 Y CN2710298 Y CN 2710298Y CN 200420073511 CN200420073511 CN 200420073511 CN 200420073511 U CN200420073511 U CN 200420073511U CN 2710298 Y CN2710298 Y CN 2710298Y
- Authority
- CN
- China
- Prior art keywords
- electrical connector
- rod
- housing
- buckle
- thermostat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a temperature controller with model overheat protection, comprising a plastic insulation shell 1, an electrical interconnection piece 2, a contact chip 3, a ceramic ejector rod 6, a bi-metal fever deformation plate 7, a spring 8 and a plastic push rod 9. The utility model is characterized in that the temperature controller is also provided with a function handspike 4, a buckle dental sclerite 5. When an electric appliance lies in a situation of a dry combustion without water, the buckle dental sclerite 5 holds out on the electrical interconnection piece 2 and make the electrical interconnection piece 2 not reset. Motion is switched off by the use of a manual cable run of a wane 10 of the switch to motivate the function handspike 4 disarm constraint on the buckle dental sclerite and resume the contact with the contact chip 3 and to make the electric appliance enter the normal cycle of operation again. The utility model can protect the electric appliance effectively and safely.
Description
Technical field
The utility model relates to a kind of thermostat, especially has overtemperature protection system, can cut off appliances power source, must be by the novel thermostat of hand-reset.
Background technology
In the existing household electrical appliance; a variety of electrical equipment; such as electric kettle etc.; all have heating element; need in use carry out the overtemperature protection of dry-fire condition, that is: anhydrous dry combustion method in electrical equipment is when temp of heating element is increased to the degree safe in utilization that jeopardizes electrical equipment; protective device in the electrical equipment can automatic shutdown circuit or powered-down, prevents the overheated impaired even breaking out of fire of electrical equipment.
Usually adopt thermostat in the prior art, realize cutting off the overtemperature protection of circuit or power supply.Its structure comprises: housing, belt electrode (the L utmost point), neutral pole (the N utmost point), electrical connector, contact chip, bimetallic thermal deformation sheet, ceramic push rod, thermal cut-off etc.Between belt electrode (the L utmost point), the neutral pole (the N utmost point) across plastic insulating layer; Two electrical connectors are separately fixed on belt electrode and the neutral pole, and corresponding two contact chips are fixed on the housing, and its contact is suppressed with the contact of electrical connector respectively and contacted; The pottery push rod passes housing, is arranged between bimetallic thermal deformation sheet and the contact chip, makes both pass through it and keeps interlock.Bimetallic thermal deformation sheet is fixed on the outside of housing, and a side posts on heater element.
Its operation principle is: when electrical equipment was in anhydrous dry-fire condition, temperature of heating elements constantly raise, and when the heat that is increased to bimetallic thermal deformation sheet when temperature was stuck up alternating temperature and spent, bimetallic thermal deformation sheet deformed; Promote ceramic push rod and back down electrical connector or contact chip, electrical connector is separated with contact chip, thereby cut off appliance circuit, make electrical equipment stop heating, stop dry combustion method.The advantage of said structure is that contact is reliable, convenient, simple, when temperature of heating elements reaches the protection temperature of setting, can cut off appliance circuit automatically, reaches the purpose of overtemperature protection.
But there is following shortcoming in above-mentioned overtemperature protection structure: when appliance circuit is cut off, temperature of heating elements descends gradually, and the temperature of bimetallic thermal deformation sheet also descends gradually.The heat that is reduced to bimetallic thermal deformation sheet when temperature is stuck up the alternating temperature degree when following, and bimetallic thermal deformation sheet resets.At this moment, ceramic push rod resets, and electrical connector contacts once more with contact chip, and circuit recloses, and electrical heating elements enters heated condition again.So circulation repeatedly, the electrical equipment internal circuit can be under dry-fire condition break-make ceaselessly, thereby can cause the reduction in contact chip, electrical connector and bimetallic thermal deformation sheet useful life, also entail dangers to electrical equipment safe in utilization simultaneously.
The utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of thermostat of novel band overtemperature protection system is provided.The thermostat that has this overtemperature protection system, when electrical equipment was in the situation of anhydrous dry combustion method, bimetallic thermal deformation sheet action, and the impetus by ceramic push rod were cut off contacting of electrical connector and contact, the disconnection of realization circuit.When realizing cutting off appliances power source, fasten electrical connector by the buckle gear piece, the heat that had both made temperature be reduced to bimetallic thermal deformation sheet is stuck up below the alternating temperature degree, bimetallic thermal deformation sheet resets, the pottery push rod resets, and electrical connector can not contact with contact chip yet again, and circuit can not be connected, must electrical connector be resetted by the manual disconnection action of switch seesaw, the recovery electrical connector suppresses with the normality between the contact chip and contacts.
The utility model comprises: plastic insulation housing 1, be arranged on electrical connector 2 and contact chip 3 in the housing 1, and electrical connector 2 suppresses by both contacts with contact chip 3 and contacts, and is connected in the loop; Pottery push rod 6 is clipped between bimetallic thermal deformation sheet 7 and the electrical connector 2, makes both keep interlock; Bimetallic thermal deformation sheet 7 one sides post on heater element.
This thermostat is characterised in that: also have function lever 4, buckle gear piece 5 in the housing 1; Function lever 4 comprises lever two-end- point 41,42, balance pivot 43; Buckle gear piece 5 comprises buckle teeth portion 51 and buckle teeth portion 52.Have plastic push-rod 9 and spring 8 in the housing 1.One end 41 of function lever 4 is arranged between plastic push-rod 9 and the spring 8, and its other end 42 contacts with the buckle teeth portion 51 of buckle gear piece 5; The buckle teeth portion 51 of buckle gear piece 5 contacts with an end 42 of function lever during normality, and another buckle teeth portion 52 places under the electrical connector 2, and can be to electrical connector 2 generation effects; Plastic push-rod 9 places housing 1, and the one end contacts with an end 41 of function lever 4, and the other end stretches out from housing 1, and when switch seesaw 10 was done to disconnect motion, the boss by its side promoted plastic push-rod 9 and moves in housing 1 along its installing hole.Spring 8 places in the shrinkage pool of housing 1, and an end 41 of function lever 4 is placed on it.
The beneficial effects of the utility model are: when electrical equipment was in anhydrous dry-fire condition, bimetallic thermal deformation sheet 7 can heat stick up distortion, and what promote that ceramic push rod 6 backs down electrical connector 2 and contact chip 3 contacts the electric power loop of cut-out electrical equipment.Simultaneously, the buckle teeth portion 52 of buckle gear piece 5 fastens electrical connector 2, thereby bimetallic thermal deformation sheet 7 resets after guaranteeing both to have made temperature to descend, the pottery push rod resets, electrical connector 2 can not contact with contact chip 3 more yet, make circuit be in the disconnection safe condition all the time, make it contact conducting again, must electrical connector 2 be resetted.So just can make electrical equipment when dry-fire condition, ensure that by said structure electrical equipment is in safer state.
Description of drawings
Figure one is the thermostat front view.
Figure two throws off stereogram behind the loam cake for thermostat.
Figure three is the thermostat rearview.
Figure four removes local amplification of structural perspective behind the housing for thermostat.
Figure five removes structural perspective behind the housing for thermostat.
Figure six is the thermostat end view.
Embodiment:
Below in conjunction with description of drawings embodiment of the present utility model.
Shown in Fig. 1 to 6: the thermostat described in the utility model embodiment comprises housing 1, electrical connector 2, contact chip 3, function lever 4 comprises end points 41,42, fulcrum 43, buckle gear piece 5 comprises buckle teeth portion 51,52, pottery push rod 6, bimetallic thermal deformation sheet 7, spring 8, plastic push-rod 9, switch seesaw 10.
Shown in Fig. 1 to 6, housing 1 is the plastic insulation housing, and electrical connector 2, contact chip 3 are copper sheet, and electrical connector 2 and contact 3 all are fixed on housing 1 inside.During normality, electrical connector 2 suppresses by both contacts with contact chip 3 and contacts, and is connected in the electric power loop; Shown in figure three, figure five, figure six, ceramic push rod 6 is clipped between bimetallic thermal deformation sheet 7 and the electrical connector 2.Bimetallic thermal deformation sheet 7 one sides post (not shown) on heater element.It is characterized in that: also have function lever 4, buckle gear piece 5 in the housing 1, function lever 4 comprises lever two-end- point 41,42, balance pivot 43; Buckle gear piece 5 comprises buckle teeth portion 51,52, and can make by modes such as bendings himself has certain resilience force; Have plastic push-rod 9 and spring 8 in the housing 1.One end 41 of function lever 4 is arranged between plastic push-rod 9 and the spring 8, and its other end 42 contacts with the buckle teeth portion 51 of buckle gear piece 5; The buckle teeth portion 51 of buckle gear piece 5 contacts with an end 42 of function lever during normality, and another buckle teeth portion 52 places under the electrical connector 2, can be to electrical connector 2 generation effects during normality; Plastic push-rod 9 places housing 1, and the one end contacts with an end 41 of function lever 4, and the other end stretches out from the installing hole of housing 1, with the manual disconnection action maintenance gap interlock of switch seesaw 10.Spring 8 is positioned in the shrinkage pool of housing 1, and an end 41 of function lever 4 is placed on it.
The course of work of said structure is:
Described thermostat is when normality, the disconnection and the closure function of switch seesaw 10 control circuits, when switch seesaw 10 is in circuit normality open position, switch seesaw 10 is being suppressed plastic push-rod 9, because plastic push-rod 9 is in (shown in figure four, figure five) on the line with an end 41 of function lever 4, the position of spring 8, plastic push-rod 9 is pressed and makes an end 41 of function lever 4 produce displacement downwards, and spring 8 is in confined state; Simultaneously an end 41 of function lever 4 produces displacements downwards and makes the other end 42 upwarp and in the displacement of generation in the radial direction of fulcrum 43, corresponding displacement takes place in the buckle teeth portion 51 that this displacement promotes buckle teeth sheet 5, simultaneously the buckle teeth portion 52 of buckle teeth sheet 5 is subjected to displacement, because electrical connector 2 was in to suppress normally with contact chip 3 and contacted this moment, and the buckle teeth portion of buckle teeth sheet 5 is under the electrical connector 2 for 52 this moments, and this displacement can be to electrical connector 2 and contact chip 3 generation effects (shown in figure four).When switch seesaw 10 is in circuit closed position, the downforce of plastic push-rod 9 disappears, spring 8 discharges, push away on 41 ends with plastic push-rod 9 and function lever 4,42 ends of function lever 4 move down simultaneously, fulcrum 43 radially go up rollback, this moment, the buckle teeth sheet 5 was replied under the elastic force of himself, moved on 41 ends of plastic push-rod 9 with function lever 4 simultaneously.When electrical equipment is in dry-fire condition, 7 actions of bimetallic thermal deformation sheet, thereby promoting ceramic push rod 6 promotion electrical connectors 2 moves down, electrical connector 2 promotes 5 displacements of buckle teeth sheet again, when electrical connector 2 is crossed the bottom surface of buckle teeth portion 52 of buckle teeth sheet 5, the thrust of buckle teeth portion 52 is disappeared, buckle teeth sheet 5 resets under the effect of self restoring force, the buckle teeth portion 52 of buckle teeth sheet 5 fastens electrical connector 2, this moment electrical connector 2 contacts and contact chip 3 contact separation, circuit is cut off.When the electrical equipment temperature drops to uniform temperature, bimetallic thermal deformation sheet 7 resets, pottery push rod 6 resets thereupon, this moment the buckle teeth sheet 5 that resetted buckle teeth portion 52 lower limit resetting of electrical connector 2 make it not recover to suppress once more to contact with contact chip 3, thereby make circuit still be in off-state, have only when switch seesaw 10 is pushed to open position, the buckle teeth portion 51 of buckle teeth sheet 5 is promoted by function lever 4, buckle teeth portion 52 is subjected to displacement thereupon its bottom is disappeared to the constraint of electrical connector 2 simultaneously, electrical interconnecting means 2 resets under the elastic force effect of himself, recover the contact condition that suppresses with contact chip 3, entire circuit is recovered the normal circulation state.
Claims (6)
1. the thermostat with overtemperature protection comprises
Plastic insulation housing (1) is arranged on electrical connector (2) and contact chip (3) in the housing (1), and electrical connector (2) suppresses by both contacts with contact chip (3) and contacts, and is connected in the loop;
Be arranged on the ceramic push rod (6) between bimetallic thermal deformation sheet (7) and the electrical connector (2), ceramic push rod (6) one end roof pressures are on electrical connector (2), and the other end and bimetallic thermal deformation sheet (7) are inconsistent, make both keep interlock;
Be fixed on the bimetallic thermal deformation sheet (7) on the housing, a side of bimetallic thermal deformation sheet (7) posts on heater element;
Have plastic push-rod (9) and spring (8) in the housing (1), housing (1) external stability has the normal switch seesaw (10) that opens and closes of rotating control circuit;
It is characterized in that, wherein also have an end and be arranged between plastic push-rod (9) and the spring (8) the function lever (4) that the other end is connected with buckle gear piece (5);
2, thermostat as claimed in claim 1 is characterized in that, function lever (4) comprises lever two ends 41,42 and fulcrum 43, and lever 41 is arranged between plastic push-rod (9) and the spring (8), and lever 42 contacts with the buckle teeth portion 51 of buckle gear piece;
3, thermostat as claimed in claim 1, it is characterized in that buckle gear piece (5) is made up of buckle teeth portion (51) and buckle teeth portion (52), buckle teeth portion 51 contacts with function lever 42 during normality, buckle teeth portion 52 places under the electrical connector (2), and can be to electrical connector (2) generation effect;
4, thermostat as claimed in claim 1 is characterized in that, plastic push-rod (9) one ends contact with function lever (41), and the other end stretches out from housing 1, contacts with switch seesaw (10) gap;
5, as claim 1 described thermostat, it is characterized in that, spring (8) one ends are installed in housing (1) one shrinkage pool, the other end contacts with function lever (41), switch seesaw (10) is when being in circuit open position, under the effect of plastic push-rod (9) and function lever (41), spring (8) is in compressive state;
6, thermostat as claimed in claim 1 is characterized in that, there is a boss switch seesaw (10) side, and switch seesaw (10) is when being in circuit closed position, and this boss does not contact with plastic push-rod (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420073511 CN2710298Y (en) | 2004-07-06 | 2004-07-06 | Temp. controller with overheat protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420073511 CN2710298Y (en) | 2004-07-06 | 2004-07-06 | Temp. controller with overheat protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2710298Y true CN2710298Y (en) | 2005-07-13 |
Family
ID=34852703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420073511 Expired - Lifetime CN2710298Y (en) | 2004-07-06 | 2004-07-06 | Temp. controller with overheat protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2710298Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008141490A1 (en) * | 2007-05-21 | 2008-11-27 | Ningbo Goodfriends Electric Appliance Co., Ltd | Overheat protector, electric heater matching with the overheat protector and corresponding liquid heater |
| CN102568928A (en) * | 2012-01-18 | 2012-07-11 | 钻宝电子有限公司 | Temperature sensitive controller |
| CN108550958A (en) * | 2018-06-05 | 2018-09-18 | 华霆（合肥）动力技术有限公司 | Power cut-off device and heat management system |
| CN109036956A (en) * | 2018-08-17 | 2018-12-18 | 浙江众腾电器科技有限公司 | Electric kettle and its temperature controller |
-
2004
- 2004-07-06 CN CN 200420073511 patent/CN2710298Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008141490A1 (en) * | 2007-05-21 | 2008-11-27 | Ningbo Goodfriends Electric Appliance Co., Ltd | Overheat protector, electric heater matching with the overheat protector and corresponding liquid heater |
| CN102568928A (en) * | 2012-01-18 | 2012-07-11 | 钻宝电子有限公司 | Temperature sensitive controller |
| CN102568928B (en) * | 2012-01-18 | 2015-03-18 | 钻宝电子有限公司 | Temperature sensitive controller |
| CN108550958A (en) * | 2018-06-05 | 2018-09-18 | 华霆（合肥）动力技术有限公司 | Power cut-off device and heat management system |
| CN109036956A (en) * | 2018-08-17 | 2018-12-18 | 浙江众腾电器科技有限公司 | Electric kettle and its temperature controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204632979U (en) | Pyrophoric safety socket is produced in a kind of prevention | |
| CN2710298Y (en) | Temp. controller with overheat protection | |
| WO2003058366A1 (en) | A temperature controller, an electrical connector, and an electric water heater | |
| CN100567844C (en) | Overheat protector, electric heater suitable and corresponding liquid heater with it | |
| CN1125387C (en) | Temp controller for liquid heater | |
| CN2696104Y (en) | Temp controller with overheat protection | |
| CN201886968U (en) | Temperature controller | |
| CN2504753Y (en) | Socket with improved temp induction control structure | |
| US6057751A (en) | Overheat and overload sensing device | |
| CN2829063Y (en) | Memory alloy overload and short-circuit protector | |
| CN211929339U (en) | Temperature controller self-locking structure and electric kettle with same | |
| CN101727113B (en) | Jumper type temperature controller of electrothermal water boiling kettle | |
| CN204651245U (en) | With the thermostat of two ore control | |
| CN1571585A (en) | Temperature controller and electric connector | |
| CN211062676U (en) | Relay protection device for transformer substation | |
| CN202888543U (en) | Manual reset overload overtemperature protection socket | |
| CN2682683Y (en) | Fire protection socket for electric appliance | |
| CN202888538U (en) | Manual reset overload overtemperature protection plug | |
| CN2775824Y (en) | Electric device of automatic cut-off power source | |
| CN219626546U (en) | Novel temperature controller that outage reset and use circuit thereof | |
| CN2706938Y (en) | Current overload protector for button switch | |
| CN217562494U (en) | Circuit breaker with disconnection protection function | |
| CN217654631U (en) | Transformer substation relay protection monitoring system | |
| CN2572548Y (en) | Combined overcurrent, overheat, cut off delay composite type heat protector | |
| CN2862415Y (en) | Temperature control connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140706 Granted publication date: 20050713 |
|
| DD01 | Delivery of document by public notice |
Addressee: Zhang Yaqin Document name: Notification of Expiration of Patent Right Duration |