CN2807453Y - Heat protector - Google Patents
Heat protector Download PDFInfo
- Publication number
- CN2807453Y CN2807453Y CN 200520003153 CN200520003153U CN2807453Y CN 2807453 Y CN2807453 Y CN 2807453Y CN 200520003153 CN200520003153 CN 200520003153 CN 200520003153 U CN200520003153 U CN 200520003153U CN 2807453 Y CN2807453 Y CN 2807453Y
- Authority
- CN
- China
- Prior art keywords
- phase motor
- winding coil
- single phase
- upper contact
- elastic plates
- 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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- Protection Of Generators And Motors (AREA)
Abstract
The utility model relates to a thermal protector which can protect a single phase motor. An insulating spacer is arranged between the upper contact elastic plates and the thermal bimetallic strips; the thermal protector is provided with two non-connecting upper contact elastic plates and two non-connecting lower contact connection lugs. When a winding coil of the single phase motor overheats because of the overloading of the current increase and exceeds the permitted temperature rise value, the thermal bimetallic strips in the thermal protector arranged in the winding coil of the single phase motor can deform and tilt upwards in the reverse direction instantly and can simultaneously push away the two non-connecting upper contact elastic plates on the insulating spacer so as to separate the contacts of the two non-connecting upper contact elastic plates and the normally closed contacts on the two non-connecting lower contact connection lugs. At the same time, the single phase current passing through the two non-connecting upper contact elastic plates is cut off instantly; therefore, no current passes through the winding coil of the single phase motor, and as a result, the winding coil of the single phase motor is prevented from being damaged.
Description
Affiliated technical field
The utility model relates to a kind of protective device of loading type single-phase motor thermal protector.
Background technology
At present; known loading type single-phase motor thermal protector; it is the thermal protector on the single-phase motor winding coil of packing into; because its structure is limit; it is by one group of upper and lower contact single channel control motor power; and live wire and the zero lines that can not control on the motor powers while two tunnel; when motor in operation process; once motor winding coil generation defective insulation or when short circuit occurring; if when being controlled on the motor winding coil zero line by the thermal protector of one group of upper and lower contact single channel control; when motor casing did not have earth connection yet, consequence was with danger close.
Summary of the invention
Can not control two road power firestreaks and zero line deficiency simultaneously in order to overcome existing thermal protector, the utility model provides a kind of loading type, can control the thermal protector of motor power live wire and zero line simultaneously.
The technical scheme that its technical problem that solves the utility model adopts is between 2 not connected shell fragments passing through of thrermostatic bimetal-plate in the thermal protector on the single-phase motor winding coil of packing into and electric current an insulation spacer to be set.When motor at the winding coil defective insulation or be short-circuited and in overload situations following time, the winding coil electric current increases and significantly heating.Surpass when allowing temperature rise value; thrermostatic bimetal-plate is out of shape in the other direction with regard to moment and upwarps; insulation spacer on the top; thereby 2 normally-closed contacts on 2 not connected shell fragments have been backed down; simultaneously moment disconnects the electric current in the single-phase motor winding coil, has protected the single-phase motor winding coil not by overheated and burn out.
The beneficial effects of the utility model are can be used on the single-phase motor winding coil of packing into, have protected live wire and zero line in the single-phase motor winding coil easily, and because of the winding coil defective insulation or be short-circuited and burnt out because of overload is overheated.Thereby the safety and the personal safety of single-phase motor and whole power-equipment have been protected.The utility model circuit and mechanical structure are simple and practical.
Description of drawings
Below in conjunction with drawings and Examples the present utility model is further specified.
Fig. 1 is that the utility model master looks sectional structural map.
Fig. 2 is main TV structure schematic diagram.
Fig. 3 overlooks section Shell structure figure.
Fig. 4 is the plan structure schematic diagram.
1 shell among the figure, 2 cover plates, 3 upper contact head shell fragments, 4 insulation spacers, 5 thermo bimetals are support point fixedly, 6 thrermostatic bimetal-plates, 7 times contact braces, 8 electrical insulation spacers.
Embodiment
In Fig. 2 and Fig. 4, single-phase motor is under normal operation, electric current in the motor is from 2 not connected following contact braces (7), by 2 normally closed 2 not connected upper contact head shell fragments (3), flow to (sense of current also can reverse wiring) of single-phase motor winding coil again.Thereby make single-phase motor be in the normal operation operating state.Single-phase motor is under rated condition during long-term work; the temperature rise of winding coil can not surpass permissible value; when under overload situations, working; winding coil is because of the significantly heating of increase of electric current; when winding coil overheated and when surpass allowing temperature rise value; the thrermostatic bimetal-plate (6) of packing in the thermal protector on the single-phase motor winding coil will upwarp moment in the other direction; insulation spacer on the top (4), make simultaneously 2 on the not connected upper contact head shell fragment (3) the contact and the normally closed interlock moment on 2 not connected following contact braces (7) disconnect.Thereby make the moment disconnection of motor winding coil electric current, single-phase motor shuts down, and has played protection because of overheated effect of burning single-phase motor.
Claims (4)
1. thermal protector; it is by shell; 2 not connected upper contact head shell fragments; 2 not connected following contact lead braces; insulation spacer, thrermostatic bimetal-plate, the thrermostatic bimetal-plate support point is formed; it is characterized in that between 2 not connected upper contact head shell fragments and thrermostatic bimetal-plate an insulation spacer (4) being arranged.
2. this thermal protector is characterized in that having 2 not connected upper contact head shell fragments (3).
3. this thermal protector is characterized in that having 2 not connected following contact power source connecting (7).
4. according to claim 2 and 3 described thermal protectors, it is characterized in that having 4 lead connectors (3,7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520003153 CN2807453Y (en) | 2005-01-11 | 2005-01-11 | Heat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520003153 CN2807453Y (en) | 2005-01-11 | 2005-01-11 | Heat protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807453Y true CN2807453Y (en) | 2006-08-16 |
Family
ID=36921750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520003153 Expired - Fee Related CN2807453Y (en) | 2005-01-11 | 2005-01-11 | Heat protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807453Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777533A (en) * | 2018-06-29 | 2018-11-09 | 宁波江北思洞工业设计有限公司 | A kind of high density winding punching |
-
2005
- 2005-01-11 CN CN 200520003153 patent/CN2807453Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777533A (en) * | 2018-06-29 | 2018-11-09 | 宁波江北思洞工业设计有限公司 | A kind of high density winding punching |
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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: 20060816 Termination date: 20100211 |