CN201450308U - overheat protector - Google Patents
overheat protector Download PDFInfo
- Publication number
- CN201450308U CN201450308U CN2009200397701U CN200920039770U CN201450308U CN 201450308 U CN201450308 U CN 201450308U CN 2009200397701 U CN2009200397701 U CN 2009200397701U CN 200920039770 U CN200920039770 U CN 200920039770U CN 201450308 U CN201450308 U CN 201450308U
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- CN
- China
- Prior art keywords
- overheat protector
- elastic contact
- bimetal leaf
- shell
- contact chip
- 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 - Fee Related
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- Thermally Actuated Switches (AREA)
Abstract
The utility model discloses an overheat protector, which comprises an outer casing, double metal plates and static contacts, wherein the double metal plates and the static contacts are arranged inside a cavity of the outer casing. Elastic contacting plates positioned above the double metal plates are disposed in the cavity of the outer casing, moving contacts contacting with the static contacts are fixed on the elastic contacting plates, and through holes for the moving contacts to pass through are arranged on the double metal plates. The overheat protector is utilized for protecting electric devices, and has the advantages of simple structure and small and exquisite volume.
Description
Technical field
The utility model relates to a kind of protector, is specifically related to a kind of overheat protector.
Background technology
Motor is widely used in every profession and trade as a kind of equipment that converts electrical energy into mechanical energy.But in use generally need to adopt overcurrent protective device to burn out motor to avoid motor interior loop winding temperature to surpass permissible value.In real work; it is relatively poor that such protective device disconnects the time control of motor current supply circuit during to overcurrent; because in most cases motor all is that bringing onto load starts; particularly some heavy industry industries are to start under the situation of the big load of heavy duty; starting current substantially exceeds normal operating current; therefore; overcurrent protective device allows the time of overcurrent to lack normally starter motor; the overcurrent that time has been grown causing because of overload, phase shortage and stall etc. does not have the better protect effect, burns out motor easily and causes damage.
The utility model content
At above-mentioned technical problem, the purpose of this utility model provides a kind of overheat protector that is used to protect electric equipment, the utlity model has advantage simple in structure, that volume is small and exquisite.
The technical scheme that realizes the utility model purpose is as follows:
Comprise shell and be arranged at bimetal leaf and fixed contact in this cavity pocket of outer cover, also be provided with the elastic contact chip that is positioned at the bimetal leaf top in the described cavity pocket of outer cover, fix a moving contact that contacts with static contact on this elastic contact chip, described bimetal leaf is provided with the through hole that passes for moving contact.
Be provided with insulating trip in the described cavity pocket of outer cover, described fixed contact and this insulating trip are fixed as one.
The shell sidepiece of outer shell cavity oral area position extends to form the support of insulating trip to the radial center of shell through turnover.
Be provided with the annular brace seat of bimetal leaf in the described cavity pocket of outer cover, this supporting seat is between limited step and insulating trip that the outer casing inner wall face is provided with.
Described elastic contact chip middle part is a flat segments, and extend on the oblique upper left side of the left end of elastic contact chip, and extend in the oblique upper right side of elastic contact chip right-hand member.
Described outer shell cavity oral area position is provided with closing device.
Adopted such scheme, also be provided with the elastic contact chip that is positioned at the bimetal leaf top in the cavity pocket of outer cover, fix a moving contact that contacts with static contact on this elastic contact chip, be subjected to spacingly in the time of can making the generation deformation of bimetal leaf by elastic contact chip, described bimetal leaf is provided with the through hole that passes for moving contact.After the temperature of bimetal leaf in experiencing circuit loop, bimetal leaf sudden change upset promotes elastic contact chip, and it is curved to make that elastic contact chip takes place by shape, drives moving contact and produces displacement, makes moving contact separate with fixed contact, thereby cuts off circuit loop.When bimetal leaf was experienced the ambient temperature reduction, the bimetallic sector-meeting automatically reset to original-shape, and elastic contact chip resets, thereby circuit loop is connected in the contact of two contacts.The utility model is made of several simple parts, and it has advantage simple in structure, that volume is small and exquisite.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments;
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a work schematic diagram of the present utility model;
In the accompanying drawing, 1 is moving contact, and 2 is the annular brace seat, and 3 is insulating trip, and 4 is fixed contact, and 5 is shell, and 5a is a support, and 6 is elastic contact chip, and 7 is bimetal leaf, and 8 is lead.
Embodiment
With reference to Fig. 1, overheat protector of the present utility model comprises shell 5 and is arranged at bimetal leaf 7 and fixed contact 4 in this cavity pocket of outer cover.Be provided with the annular brace seat 2 of bimetal leaf 7 in shell 5 cavitys, also be provided with the elastic contact chip 6 that is positioned at bimetal leaf 7 tops in shell 5 cavitys, fix a moving contact that contacts with static contact 1 on this elastic contact chip.The middle part of elastic contact chip 6 is a flat segments, moving contact 1 is fixed in the middle part of elastic contact chip 6 by welding manner, extend on the oblique upper left side of the left end of elastic contact chip 6, and extend in the oblique upper right side of elastic contact chip right-hand member, and the two ends, the left and right sides of elastic contact chip 6 contact with the roof of shell 5.Bimetal leaf 7 is provided with the through hole that passes for moving contact 1.Be provided with insulating trip 3 in shell 1 cavity, described fixed contact 1 is fixed as one with this insulating trip, and fixed contact and insulating trip are one by injection mo(u)lding.Fixed contact 4 is fixing with lead 8 welding.The shell sidepiece at shell 5 accent positions extends to form the support 5a of insulating trip to the radial center of shell through turnover.Described annular brace seat 2 is between limited step and insulating trip 3 that the outer casing inner wall face is provided with, and is fastening by the mode that clamps.Be provided with closing device 9 at shell 5 accent positions, be used for insulating trip 3 location.
With reference to Fig. 2, during the utility model work, when the electric current in the circuit loop is excessive, bimetal leaf 7 is after experiencing ambient temperature, bimetal leaf 7 sudden change upsets promote elastic contact chip 6, make elastic contact chip 6 become tiling shape by trapezoidal shape, drive moving contact 1 and produce displacement, make moving contact 1 separate, thereby cut off circuit loop with fixed contact 4.When bimetal leaf was experienced the ambient temperature reduction, bimetal leaf 7 can automatically reset to original-shape, and elastic contact chip 6 returns to trapezoidal shape by tiling shape, thereby circuit loop is connected in the contact of two contacts.
Claims (6)
1. overheat protector; comprise shell and be arranged at bimetal leaf and fixed contact in this cavity pocket of outer cover; it is characterized in that: also be provided with the elastic contact chip that is positioned at the bimetal leaf top in the described cavity pocket of outer cover; fix a moving contact that contacts with static contact on this elastic contact chip, described bimetal leaf is provided with the through hole that passes for moving contact.
2. overheat protector according to claim 1 is characterized in that: be provided with insulating trip in the described cavity pocket of outer cover, described fixed contact and this insulating trip are fixed as one.
3. overheat protector according to claim 2 is characterized in that: the shell sidepiece of outer shell cavity oral area position extends to form the support of insulating trip to the radial center of shell through turnover.
4. overheat protector according to claim 2 is characterized in that: be provided with the annular brace seat of bimetal leaf in the described cavity pocket of outer cover, this supporting seat is between limited step and insulating trip that the outer casing inner wall face is provided with.
5. overheat protector according to claim 1 is characterized in that: described elastic contact chip middle part is flat segments, and extend on the oblique upper left side of the left end of elastic contact chip, and extend in the oblique upper right side of elastic contact chip right-hand member.
6. overheat protector according to claim 1 is characterized in that: described outer shell cavity oral area position is provided with closing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200397701U CN201450308U (en) | 2009-04-29 | 2009-04-29 | overheat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200397701U CN201450308U (en) | 2009-04-29 | 2009-04-29 | overheat protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450308U true CN201450308U (en) | 2010-05-05 |
Family
ID=42555031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200397701U Expired - Fee Related CN201450308U (en) | 2009-04-29 | 2009-04-29 | overheat protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004796A (en) * | 2016-07-05 | 2016-10-12 | 瑞安市硕维佳电子有限公司 | Windshield wiper motor protector |
-
2009
- 2009-04-29 CN CN2009200397701U patent/CN201450308U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004796A (en) * | 2016-07-05 | 2016-10-12 | 瑞安市硕维佳电子有限公司 | Windshield wiper motor protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20140429 |