CN202855637U - Miniature thermal protector - Google Patents
Miniature thermal protector Download PDFInfo
- Publication number
- CN202855637U CN202855637U CN 201220580763 CN201220580763U CN202855637U CN 202855637 U CN202855637 U CN 202855637U CN 201220580763 CN201220580763 CN 201220580763 CN 201220580763 U CN201220580763 U CN 201220580763U CN 202855637 U CN202855637 U CN 202855637U
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- base
- static contact
- thermal protector
- temperature
- shell
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Abstract
The utility model relates to a miniature thermal protector. The miniature thermal protector comprises a housing, and a stationary contact sheet, a movable contact and a temperature-sensing bimetal which are arranged in the housing. The stationary contact sheet is fixedly arranged on the lower portion of the inner cavity of the housing. The temperature-sensing bimetal is arranged over the stationary contact sheet. The movable contact is welded onto the front end of the temperature-sensing bimetal, wherein the movable contact is in contact with the stationary contact sheet. A base and an upper pressing plate are further arranged in the housing. The base is fixedly arranged on the lower-rear portion of the inner cavity of the housing. The stationary contact sheet is fixed inside the base through injection molding. The upper pressing plate is arranged on the base correspondingly. The rear end of the temperature-sensing bimetal is welded and fixed on the lower surface of the upper pressing plate. The miniature thermal protector of the utility model is realized by optimizing and modifying the structure of an existing bimetal type thermal protector, the stationary contact sheet is directly arranged inside the base through injection molding, the bimetal and the upper pressing plate are welded and connected together and then are placed in the recessed region of the base and compacted and fixed, so the structure is simple and stable.
Description
Technical field
The utility model relates to a kind of protective device, particularly a kind of microminiature thermal protector.
Background technology
In recent years make rapid progress especially in the rapid technological improvement, particularly microelectronics correlative technology field, electronic product has goed deep in each family and all trades and professions thus, becomes the indispensable part of the modern life.Thermal protector is used on the overcurrent, overtemperature protection of the electric elements such as motor, warmer, ballast, electric tool, but existing bimetal plate heat protector and other thermal protector volumes are large, useful life short; Owing to its volume is large, be inconvenient to be installed on narrow and small position or inlay be installed on the product; Locate inaccurate, insensitive to the reaction of the thermal effect of temperature, electric current benefit, safe not, reliable to the product overtemperature protection.
In the existing technomania protector industry part Miniature heat protector is arranged also; be the Miniature heat protector of ZL02264721.X such as the patent No.; its bimetal leaf and strutting piece are by being welded to connect; strutting piece and static contact are put into the concave groove of holder; just directly said modules is inserted in the shell, uses the epoxy sealing moulding.The inner structure part of this thermal protector all is movable, extremely unstable, as in the sheath body assembling process deflection occuring, will affect the Stability and veracity of its temperature.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, and provides a kind of simple in structure, manufactures easily the microminiature thermal protector that cost is low.
The technical scheme that realizes the utility model purpose is: a kind of microminiature thermal protector, have shell, and be arranged on static contact, moving contact, the temperature-sensitive bimetal leaf of enclosure; Described static contact is fixedly installed on the bottom of shell inner cavity; Described temperature-sensitive bimetal leaf is arranged on the top of static contact; Described moving contact is welded on the front end of temperature-sensitive bimetal leaf, and moving contact contacts with static contact; Described enclosure also has base and top board; Described base is fixedly installed on the back lower place of shell inner cavity; Described static contact is fixed on base inside by injection moulding; Described top board correspondence is arranged on the base top; The rear end of described temperature-sensitive bimetal leaf is weldingly fixed on the lower surface of top board.
Has groove on the described base of technique scheme; The bottom of described top board snaps in the interior and compression of groove on the base.
Has the static contact stopper slot on the described shell inner cavity of technique scheme; The front end of described static contact is stuck in the static contact stopper slot.
The described shell of technique scheme is the rectangle hollow housing of an end opening.
The opening part of the described shell of technique scheme has the epoxy sealing layer.
The afterbody of the described top board of technique scheme and static contact all is welded with wire.
After adopting technique scheme, the utlity model has following positive effect:
(1) the utility model is to realize by the structure optimization rectification to existing bimetallic thermocutout; static contact is directly injection-moulded in base inside; sheet metal and top board are welded to connect, and the depressed area of putting into base compresses by real fixing, and this simple structure is stable.
(2) the utility model thermal protector is simple in structure, stable, reasonable; manufacture easily; cost is low, now has been widely used in the small household appliances such as rechargeable battery set, motor with cup rotor, alternating current motor and water pump, fluorescent lamp ballast, transformer, electrical heated appliance, portable power tool.
(3) has groove on the base of the present utility model; The bottom of described top board snaps in the interior and compression of groove on the base, guarantees the stable of temperature-sensitive bimetal leaf and top board.
(4) has the static contact stopper slot on the shell inner cavity of the present utility model; The front end of static contact is stuck in the static contact stopper slot; Can guarantee not deflection, the displacement of intraware of shell.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of base of the present utility model;
1. shells among the figure, 11. static contact stopper slots, 2. static contact, 3. moving contact, 4. temperature-sensitive bimetal leaf, 5. base, 51. grooves, 6. top board, 7. epoxy sealing layer, 8. wire.
Embodiment
(embodiment 1)
See Fig. 1 and Fig. 2, the utlity model has shell 1, be arranged on static contact 2, moving contact 3, temperature-sensitive bimetal leaf 4, base 5 and the top board 6 of shell 1 inside; Shell 1 is the rectangle hollow housing of an end opening, has static contact stopper slot 11 on shell 1 inner chamber; Static contact 2 is fixedly installed on the bottom of shell 1 inner chamber, and the front end of static contact 2 is stuck in the static contact stopper slot 11; Temperature-sensitive bimetal leaf 4 is arranged on the top of static contact 2; Moving contact 3 is welded on the front end of temperature-sensitive bimetal leaf 4, and moving contact 3 contacts with static contact 2; Base 5 is fixedly installed on the back lower place of shell 1 inner chamber; Has groove 51 on the base 5; Static contact 2 is fixed on base 5 inside by injection moulding; Top board 6 correspondences are arranged on base 5 tops, and the bottom of top board 6 snaps in the groove 51 interior and compressions on the base 5; The rear end of temperature-sensitive bimetal leaf 4 is weldingly fixed on the lower surface of top board 6; The opening part of shell 1 has epoxy sealing layer 7; The afterbody of top board 6 and static contact 2 all is welded with wire 8.
Operation principle of the present utility model is: during use, two wires 8 of protector are connected in series in the loop of various motors and household electrical appliance, and this thermal protector is placed on inside or the point for measuring temperature place of equipment, when ambient temperature reaches the setting operating temperature value of thermal protector around it, temperature-sensitive bimetal leaf 4 upset of will bouncing, moving contact 3 disengages with static contact 2, cuts off the electricity supply thus; After ambient temperature was reduced to rating number, temperature-sensitive bimetal leaf 4 returned to normal, and moving contact 3 resumes contacts with static contact 2, thereby recovered power connection; Thereby motor and electrical equipment are played superheat protecting function.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. a microminiature thermal protector has shell (1), is arranged on shell (1) inner static contact (2), moving contact (3), temperature-sensitive bimetal leaf (4); Described static contact (2) is fixedly installed on the bottom of shell (1) inner chamber; Described temperature-sensitive bimetal leaf (4) is arranged on the top of static contact (2); Described moving contact (3) is welded on the front end of temperature-sensitive bimetal leaf (4), and moving contact (3) contacts with static contact (2); It is characterized in that: described shell (1) inside also has base (5) and top board (6); Described base (5) is fixedly installed on the back lower place of shell (1) inner chamber; Described static contact (2) is fixed on base (5) inside by injection moulding; Described top board (6) correspondence is arranged on base (5) top; The rear end of described temperature-sensitive bimetal leaf (4) is weldingly fixed on the lower surface of top board (6).
2. microminiature thermal protector according to claim 1 is characterized in that: have groove (51) on the described base (5); The bottom of described top board (6) snaps in the interior and compression of groove (51) on the base (5).
3. microminiature thermal protector according to claim 2 is characterized in that: have static contact stopper slot (11) on described shell (1) inner chamber; The front end of described static contact (2) is stuck in the static contact stopper slot (11).
4. microminiature thermal protector according to claim 3, it is characterized in that: described shell (1) is the rectangle hollow housing of an end opening.
5. microminiature thermal protector according to claim 4, it is characterized in that: the opening part of described shell (1) has epoxy sealing layer (7).
6. microminiature thermal protector according to claim 5, it is characterized in that: the afterbody of described top board (6) and static contact (2) all is welded with wire (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220580763 CN202855637U (en) | 2012-11-06 | 2012-11-06 | Miniature thermal protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220580763 CN202855637U (en) | 2012-11-06 | 2012-11-06 | Miniature thermal protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202855637U true CN202855637U (en) | 2013-04-03 |
Family
ID=47986806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220580763 Expired - Fee Related CN202855637U (en) | 2012-11-06 | 2012-11-06 | Miniature thermal protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202855637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280376A (en) * | 2013-05-22 | 2013-09-04 | 苏州华旃航天电器有限公司 | Ultra-small sealing temperature controller |
-
2012
- 2012-11-06 CN CN 201220580763 patent/CN202855637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280376A (en) * | 2013-05-22 | 2013-09-04 | 苏州华旃航天电器有限公司 | Ultra-small sealing temperature controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151106 |
|
| EXPY | Termination of patent right or utility model |