CN201060826Y - Current overload protector with switch function - Google Patents
Current overload protector with switch function Download PDFInfo
- Publication number
- CN201060826Y CN201060826Y CNU2007201203329U CN200720120332U CN201060826Y CN 201060826 Y CN201060826 Y CN 201060826Y CN U2007201203329 U CNU2007201203329 U CN U2007201203329U CN 200720120332 U CN200720120332 U CN 200720120332U CN 201060826 Y CN201060826 Y CN 201060826Y
- Authority
- CN
- China
- Prior art keywords
- switch
- seesaw
- guide card
- overload protection
- protection device
- 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 current overload protection unit, in particular to a current overload protection unit operated as general switch, comprising a switch housing, a switch controlling component, a thermosensitive metal coupon, a switching wane guiding vane and a wane supporting guide vane; the wane supporting guide vane of the current overload protection unit is fixedly connected with the thermosensitive metal coupon; a knockout pin which can reset the thermosensitive metal coupon after overloading deformation is arranged on one end of the wane guiding vane. Compared with the prior art, the current overload protection unit with the switching function of the utility model has the advantages that not only the automatic protection for overload is realized through the characteristic that the thermal sensitive effect is generated when the thermosensitive metal coupon is powering on and then the circuit is off because of the deformation, but also the control function of the general switch is added; particularly, the structure ensures independent working for the overload protection part; when the switch needs off, but cannot be off accidentally, the normal working for the overload protection circuit is also ensured, and the usage is safer.
Description
Technical field
The utility model relates to a kind of current overload protection protection unit, the especially a kind of current overload protection protection unit that can control as regular tap.
Background technology
General rocker switch all has path and the two kinds of operating modes that open circuit usually, and therefore, when pressing an end of seesaw, what the switch home loop presented is the situation of path, and at this moment, electric current then can waltz through switch; Otherwise if when pressing the other end of seesaw, the loop in the rocker switch then presents the situation that opens circuit, and at this moment, electric current then can't pass through switch.The switch of this class is not owing to have any protective device, so if when moment has huge electric current by push-button switch, the electrical equipment controlled of switch then probably can produce the situation of damage because of the overload of electric current thus.And general current overload protection protection unit does not possess the manipulation function as regular tap, can only independently use as protective device when using in electrical equipment.When needs current overload protection protection unit and switch duplicate protection, increased product space and product cost, be unfavorable for the extensive use of the general product for civilian use.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of current overload protection protection unit of belt switch function; function with auto-cutout protection when realizing current overload; can as regular tap, use under the normal condition simultaneously, and then electrical equipment be produced the effect of duplicate protection.And eliminating the back protective device in overload can automatically reset.
For addressing the above problem the utility model by the following technical solutions: a kind of overcurrent protection device of belt switch function; comprise that switch housing, switch control assembly, thermo-responsive sheet metal, switch switch the seesaw guide card, seesaw supports guide card, its seesaw of described overload protective device supports guide card and fixes and connect thermo-responsive sheet metal.
Seesaw guide card one end described in the utility model is provided with the push rod that after the distortion of thermo-responsive sheet metal overload it is resetted.
The direction of thermo-responsive sheet metal movable end distortion described in the utility model is corresponding to described push rod.
Overcurrent protection device described in the utility model is connected with electric current input and output guide card.
Seesaw guide card described in the utility model is movable metallic conduction seesaw.
Switch control assembly described in the utility model is formed described elastic parts and the sliding contact of seesaw guide card by axis that is fixed on switch housing and the elastic parts under it.
The utility model has compared with prior art not only utilized thermo-responsive sheet metal can produce thermal sensitive effect by electric current the time and has produced and be out of shape the characteristic that circuit is disconnected, and realizes the automatic protection of current overload, and has added common switch control functions.Especially its structure has guaranteed that overload protection partly works alone, and when switch need cut out and can not cut out because of accident, still can guarantee the overload protection operate as normal of circuit, uses safer.The utility model product structure is simple, and is safe and reliable, is easy to realize.
Description of drawings
Schematic diagram when Fig. 1 is the utility model switch connection state.
Schematic diagram when Fig. 2 is the utility model switch off state.
Schematic diagram when Fig. 3 is the utility model switch overload protection state.
Schematic diagram when Fig. 4 is the utility model switch reset mode.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model is made up of switch housing 1, switch control assembly 2, thermo-responsive sheet metal 3, switch switching seesaw guide card 4, seesaw support guide card 5 and electric current input and output guide card 6.Switch switches to have on the seesaw guide card 4 after the distortion of thermo-responsive sheet metal overload makes its push rod that resets 7.Thermo-responsive sheet metal 3 is fixed and is connected to seesaw and supports guide card 5.Electric current input and output guide card 6 switches seesaw guide card 4 with switch, seesaw supports guide card 5, thermo-responsive sheet metal 3 and forms the utility model internal circuit through connecting as shown in Figure 1.Switch seesaw guide card 4 by switch control assembly 2 control switchs.Figure 1 shows that normal opening.
As shown in Figure 2, rotate by control switch control assembly 2, cause that switch switches seesaw guide card 4 state as shown in Figure 2 that links, the internal circuit switch switches seesaw guide card 4 and opens circuit with electric current input and output guide card 6.This state is normal closed condition as shown in Figure 2.
As previously mentioned, the utility model has been realized the effect of regular tap.
As shown in Figure 3, because the utility model has used thermo-responsive sheet metal 3 to be connected in the switch loop in the home loop device, according to thermo-responsive sheet metal (claiming bimetal leaf again) when itself producing the physical characteristic of heating by electric current, when surpassing certain rated value by electric current, the different characteristic of the bimetallic coefficient of expansion will make thermo-responsive sheet metal produce crooked deformation.These characteristics of utilizing the utility model realize that the current overload of switch home loop opens circuit, thereby have realized switch is allowed the overload protection of the rated current passed through.As shown in Figure 3; though the switch seesaw is in the position of switch open; can crooked deformation take place thermo-responsive sheet metal 2; cut off and being connected of electric current input and output guide card 6; thereby the utility model internal circuit is opened circuit, the overload protection when therefore having realized to the circuital current overload by switch.Be illustrated in figure 3 as the state after overload protection starts.
As shown in Figure 4, when eliminate in the overload source of the external circuit that uses this device, only switch need cut out once, in the process of closing, switch control assembly 2 makes switch switch seesaw guide card 4 inverse clocks and rotates, drive the deformed end that switch switches the thermo-responsive sheet metal 3 of the push rod that resets 7 downward pushings on the seesaw guide card 4, thereby make thermo-responsive sheet metal 3 recover normal condition as shown in Figure 4, realized auto-reset function of the present utility model.
Claims (6)
1. the overcurrent protection device of a belt switch function; comprise that switch housing (1), switch control assembly (2), thermo-responsive sheet metal (3), switch switch seesaw guide card (4), seesaw supports guide card (5), it is characterized in that: it is fixing and connect thermo-responsive sheet metal (3) that its seesaw of described overload protective device supports guide card (5).
2. the overcurrent protection device of belt switch function according to claim 1 is characterized in that: described seesaw guide card (4) one ends are provided with after the distortion of thermo-responsive sheet metal overload and make its push rod that resets (7).
3. the overcurrent protection device of belt switch function according to claim 2 is characterized in that: the direction of described thermo-responsive sheet metal (3) movable end distortion is corresponding to described push rod (7).
4. the overcurrent protection device of belt switch function according to claim 1 is characterized in that: described overcurrent protection device is connected with electric current input and output guide card (6).
5. the overcurrent protection device of belt switch function according to claim 1 is characterized in that: described seesaw guide card (4) is movable metallic conduction seesaw.
6. the overcurrent protection device of belt switch function according to claim 1 is characterized in that: described switch control assembly (2) is formed described elastic parts and seesaw guide card (4) sliding contact by axis that is fixed on switch housing and the elastic parts under it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201203329U CN201060826Y (en) | 2007-05-25 | 2007-05-25 | Current overload protector with switch function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201203329U CN201060826Y (en) | 2007-05-25 | 2007-05-25 | Current overload protector with switch function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060826Y true CN201060826Y (en) | 2008-05-14 |
Family
ID=39409315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201203329U Expired - Fee Related CN201060826Y (en) | 2007-05-25 | 2007-05-25 | Current overload protector with switch function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060826Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620943B (en) * | 2009-05-25 | 2012-12-05 | 富阳瑞泰机电有限公司 | Switch button structure |
-
2007
- 2007-05-25 CN CNU2007201203329U patent/CN201060826Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620943B (en) * | 2009-05-25 | 2012-12-05 | 富阳瑞泰机电有限公司 | Switch button structure |
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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: 20080514 Termination date: 20120525 |