CN201449953U - Micro thermal protector - Google Patents
Micro thermal protector Download PDFInfo
- Publication number
- CN201449953U CN201449953U CN2009200414637U CN200920041463U CN201449953U CN 201449953 U CN201449953 U CN 201449953U CN 2009200414637 U CN2009200414637 U CN 2009200414637U CN 200920041463 U CN200920041463 U CN 200920041463U CN 201449953 U CN201449953 U CN 201449953U
- Authority
- CN
- China
- Prior art keywords
- static contact
- shell
- bottom plate
- dual metal
- fixedly connected
- 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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Abstract
The utility model discloses a micro thermal protector, which comprises a shell, a static contact piece, a dynamic contact, a dual metal piece, a bracket, a bottom plate, an insulation base and two wires. The shell has a blind tube structure, the static contact piece, the dynamic contact, the dual metal piece, the bracket, the bottom plate and the insulation base are arranged in the shell, the two wires are led out from the opening of the shell, the shell and the wires are sealed by glue, the static contact piece is flatly arranged on the bottom plate, the static contact piece and the bottom plate are separated from each other by the insulation base and are then fixedly arranged, the static contact piece and the bottom plate are respectively connected with the two wires, the bottom plate is fixedly connected with the bracket, the dual metal piece is in a butterfly shape with the left end lower than the right end, the left end of the dual metal piece is fixedly connected with the dynamic contact which is directly contacted with the static contact piece, and the right end of the dual metal piece is fixedly connected with the bracket. The utility model has a normally closed circuit structure, a compact layout and a small size, and facilitates the realization of miniaturization. Since the dual metal piece can be used as both a temperature sensing component and an actuating component, the thermal response is rapid, accurate and reliable. Therefore, the utility model is particularly suitable for small household appliances.
Description
Technical field
The utility model relates to a kind of household electrical appliance safety guard; specifically, the utility model relates to a kind of temperature control switch, and this switch is located in the electric power loop; keep the loop in setting the safe current scope, excess load is automatic cut-off loop protection household electrical appliance safety then.
Background technology
Current era, household electrical appliance are various in style, function is different, and different quality and performance index are respectively arranged, but safe performance indexes is consistent, the CCC approval procedure that government puts teeth in demonstrates fully the importance of household electrical appliance safety.Household electrical appliance on the existing market must authenticate through national CCC, otherwise commodity can not be sold by Over-The-Counter.Generally equipped thermal protector in the household electrical appliance of selling on the market; not because of security incident takes place excess load,, be subjected to the restriction of structure of controlling temperature with the protection household electrical appliance although the thermal protector of prior art satisfies the CCC authentication condition; volume is relatively large, and it is supporting to be not suitable for some small household appliances.In addition, temperature control element bimetal leaf of the prior art is under the spring leaf, and the action of bimetal leaf temperature-sensitive is pushed spring leaf open and the control circuit disconnection, and its thermal response is relatively slow, can not satisfy the safeguard protection requirement of modern household electrical equipment.
The utility model content
The utility model is primarily aimed at the deficiencies in the prior art, proposes a kind of simple in structure, volume is little, thermal response is fast miniature thermal protector.Bimetal leaf in this thermal protector had both been made temperature-sensing element, also as executive component.
The utility model is achieved through the following technical solutions technical goal.
Miniature thermal protector, it comprises the shell of blind pipe structure and built-in static contact, moving contact, bimetal leaf, support, base plate and insulating base, and from two leads that the shell opening end is drawn, is sealed by glue between shell and the lead.Described static contact horizontal is separated by by insulating base and fixing on base plate between the two, and static contact is connected the fixedly connected support of base plate respectively with base plate with two leads.Its improvements are: the described bimetal leaf left end moving contact fixedly connected towards the lower surface directly contacts with static contact, and right-hand member is directly fixedlyed connected with support.
Bimetal leaf in the said structure is dish, and the left end of fixedly connected moving contact is in low level, and the end of fixedlying connected with support is in a high position.
The utility model compared with prior art has following good effect:
1, circuit layout compactness, volume are little, easily realize microminiaturized;
2, bimetal leaf had both been made temperature-sensing element, and also as executive component, thermal response is quick, accurate, reliable;
3, overall structure is simple, easy to manufacture, production cost is low.
Description of drawings
Fig. 1 is the utility model structural profile schematic diagram.
Fig. 2 is the vertical view after Fig. 1 sloughs shell.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Shown in the drawings is the equipped a kind of miniature thermal protectors of 1.5 air-conditionings, and its cross-sectional outer is a rectangle, long limit 6mm, minor face 3mm, length overall 15mm.This miniature thermal protector comprises the shell 4 of blind pipe structure and built-in static contact 3, moving contact 5, bimetal leaf 6, support 7, base plate 8, insulating base 9, and from two leads 1 that shell 4 opening ends are drawn, is sealed by glue 2 between shell 4 and the lead 1.Described static contact 3 horizontal are separated by by insulating base 9 and fixing on base plate 8 between the two, and static contact 3 is connected with two leads 1 respectively with base plate 8, base plate 8 fixedly connected supports 7.Bimetal leaf 6 is dish in the utility model, and left end hangs down the right-hand member height, and the left end moving contact 5 fixedly connected towards the lower surface contacts with static contact 3, constitutes normally closed structure, and right-hand member is directly fixedlyed connected with support 7 tops.Miniature thermal protector is fitted on 1.5 air-conditionings, and when energized, electric current is exported through moving contact 5 to static contact 3; in case because of air-conditioning generation excess load causes current overload; the heat that overload generates makes bimetal leaf 6 distendings break away from static contact 3, promptly forms power-off protection, does not cause equipment breakdown.The utility model had both been made temperature-sensing element because of bimetal leaf 6, made executive component again, so thermal response is quick, and accurately, reliably.
Claims (2)
1. miniature thermal protector, it comprises the shell (4) of blind pipe structure and built-in static contact (3), moving contact (5), bimetal leaf (6), support (7), base plate (8) and insulating base (9), and, seal by glue (2) between shell (4) and the lead (1) from two leads (1) that shell (4) opening end is drawn; Described static contact (3) horizontal is separated by by insulating base (9) and fixing on base plate (8) between the two, and static contact (3) is connected the fixedly connected support of base plate (8) (7) respectively with base plate (8) with two leads (1); It is characterized in that: described bimetal leaf (6) the left end moving contact (5) fixedly connected towards the lower surface directly contacts with static contact (3), and right-hand member is directly fixedlyed connected with support (7) top.
2. miniature thermal protector according to claim 1 is characterized in that: described bimetal leaf (6) is dish, and the left end of fixedly connected moving contact (5) is in low level, and the end of fixedlying connected with support (7) is in a high position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200414637U CN201449953U (en) | 2009-04-01 | 2009-04-01 | Micro thermal protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200414637U CN201449953U (en) | 2009-04-01 | 2009-04-01 | Micro thermal protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201449953U true CN201449953U (en) | 2010-05-05 |
Family
ID=42554676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200414637U Expired - Fee Related CN201449953U (en) | 2009-04-01 | 2009-04-01 | Micro thermal protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201449953U (en) |
-
2009
- 2009-04-01 CN CN2009200414637U patent/CN201449953U/en not_active Expired - Fee Related
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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: 20130401 |