CN202796554U - Electrical switch with low temperature-rise and long service life - Google Patents
Electrical switch with low temperature-rise and long service life Download PDFInfo
- Publication number
- CN202796554U CN202796554U CN 201220325855 CN201220325855U CN202796554U CN 202796554 U CN202796554 U CN 202796554U CN 201220325855 CN201220325855 CN 201220325855 CN 201220325855 U CN201220325855 U CN 201220325855U CN 202796554 U CN202796554 U CN 202796554U
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- movable contact
- contact piece
- hole
- contact spring
- seesaw
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Abstract
The utility model relates to an electrical switch with a low temperature rise and a long service life, which comprises an outer casing, stationary contact pieces, a movable contact piece, a contact piece bracket and a seesaw assembly. The seesaw assembly is composed of a seesaw, a spring and a suppress head. The stationary contact pieces and the contact piece bracket are fixed in the outer casing. A movable contact piece bracket is arranged in the contact piece bracket. The suppress head of the seesaw assembly suppresses the upper side of the movable contact piece. The electrical switch is characterized in that through holes are formed in the movable contact piece and are rightly opposite to the top part of the contact piece bracket. Therefore, during the use, ablated bosses matched with the optical arc extinction effect can be ablated at the top of the contact piece bracket in positions corresponding to the through holes of the movable contact piece. An electric arc during the switching process is divided into two parts to lower the intensity of the electric arc, and finally the arc extinction effect is achieved.
Description
Technical field
The utility model relates to a kind of electric switch.
Background technology
Existing eternal lasting formula electric switch comprises shell, stationary contact piece, movable contact spring, contact support and seesaw assembly, wherein the seesaw assembly is made of seesaw, spring and pressure head, stationary contact piece, contact support are fixed in the shell, movable contact spring is erected in the contact support, pressure head in the seesaw assembly is pushed down the movable contact spring upside, seesaw drives movable contact spring and swings when swinging, thereby the state that consists of electric on-off between contact support and stationary contact piece is realized opening or closing; The electric switch of this structure can produce electric arc in the contact position between movable contact spring and contact support in the process of power on/off, continuously make the temperature rise of contact support too high in the power-on switch process, the contact support exposes to the temperature rise of housing parts even may surpass relevant national standard, may make the plastic casing fusing if temperature rise is too high, thereby shorten the life-span of electric switch, but even fire hazard.
Summary of the invention
The purpose of this utility model is the too high problem of temperature rise that exists in the existing electric switch in order to solve, and a kind of simple in structure, temperature rise is low, the life-span is long electric switch is provided.
The purpose of this utility model is achieved in that the long-life electric switch of a kind of low-temperature-rise, comprise shell, stationary contact piece, movable contact spring, contact support and seesaw assembly, wherein the seesaw assembly is made of seesaw, spring and pressure head, stationary contact piece, contact support are fixed in the described shell, movable contact spring is erected in the contact support, pressure head in the described seesaw assembly is pushed down the movable contact spring upside, it is characterized in that being provided with the hole at described movable contact spring, the oral area in this hole props up top of the trellis over against described contact, and the shape in this hole can be that circle also can be square etc.After use after a while, because the effect contact of electric arc prop up contact position, top of the trellis and described movable contact spring bottom ablated sub-fraction, but described contact support top is located because directly do not contact with movable contact spring over against the hole of described movable contact spring, so can be not ablated or Recession rate slow and reserve a less ablation plush copper, this ablation plush copper is divided into two parts with the electric arc in the switching process and arc stiffness is descended, and plays the arc extinguishing effect.Form because should the ablation plush copper naturally ablate by electric arc, its size is complementary with best arc quenching effect.
Described Kongzui is positioned at well a side of the track that described pressure head slips at described movable contact spring upside.
The quantity in the hole on the described movable contact spring is two, and two holes lay respectively at described pressure head in track both sides that described movable contact spring upside slips over.
Described contact props up top of the trellis and locates to be provided with the plush copper that stretches in this through hole over against the hole site of described movable contact spring.Should the artificial plush copper of making namely to play the arc extinguishing effect at the initial period that switch uses, but when this plush copper designs hour, its arc quenching effect is not good, after using after a while, naturally also can be in the ablation plush copper of contact support over against place, hole (being the root of former design plush copper) suitable size of ablating out of movable contact spring; And when former design plush copper designs greatlyr, its arc quenching effect is not good yet, after using after a while, nature can be ablated former design plush copper and be lost a part and become the ablation plush copper of suitable size, and the swing that former design plush copper also can make movable contact spring when excessive is not smoothly; So, play plush copper best arc quenching effect or that on the contact support, naturally ablate out.
Described hole is through hole or counterbore.
The diameter of described through hole be 0.5mm to 3mm, it is better to 2mm that general cut-off is directly got 1mm because aperture hour processing cost height too, the space has too greatly then been wasted in the aperture.
Owing to adopted technical scheme described in the utility model, can be in use prop up naturally ablate out the arc extinguishing plush copper of arc quenching effect the best of top of the trellis at contact, reduced arc stiffness, make the temperature rise of contact support and movable contact spring can be too not high, reduce simultaneously the ablation that contact props up top of the trellis, prolonged the life-span of electric switch.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the three-dimensional exploded view of a specific embodiment of the utility model.
Fig. 2 is the stereo amplification figure of several parts in the corresponding diagram 1.
Fig. 3 is static contact among Fig. 1, movable contact spring and the seesaw assembly relative position orthographic projection zoomed-in view in switch.
Fig. 4 is the stereogram of having taken away among Fig. 3 behind the seesaw assembly.
Fig. 5 is the contact support schematic perspective view in use for some time among Fig. 4.
Among the figure 11, button, 12, panel, 13, framework, 14, the wiring support, 15, base plate, 21, seesaw, 22, spring, 23, briquetting, 31,32, static contact, 4, movable contact spring, 5, the contact support; 41,42, through hole, 51, the top; 43,44, contact, 52,53, the ablation plush copper.
Embodiment
See Fig. 1, the long-life electric switch of described low-temperature-rise, comprise stationary contact piece 31 and 3, movable contact spring, contact support 5, by the seesaw assembly that seesaw 21, spring 22 and pressure head 23 consist of, by the shell that button 11, panel 12, framework 13, wiring support 14 and base plate 15 consist of, its middle frame 13, wiring support 14 and base plate 15 can the one plastic shaping be the base of shell also.
Fig. 2,51 the position through hole 41 that to offer two diameters be 1mm and 42, two through holes 41 and 42 lay respectively at pressure head 23 in track both sides that movable contact spring 4 upsides slip in contact support 5 top on movable contact spring 4.If through hole is arranged on pressure head on the track that the movable contact spring upside slips over, then affect the slip of pressure head, thereby cause button in the process of pressing not smoothly, user's handle effect is not good.
In conjunction with Fig. 3 and Fig. 4, after use after a while, because the top of the effect contact support 5 of electric arc 51 and contact position, movable contact spring 4 bottom are with ablated sub-fraction, and prop up ablate out the ablation plush copper 52 and 53 (seeing Fig. 5) of two through holes of two corresponding movable contact springs of difference of top of the trellis at contact, ablation plush copper 52 among Fig. 5 and 53 is naturally ablated by electric arc and is formed, and its size is complementary with best arc quenching effect.
The top design of contact support 5 that certainly also can be in Fig. 2 in the present embodiment goes out two plush coppers in two through holes 41 and 42 that stretch into respectively movable contact spring 4, but the people is that its size of plush copper of designing can be gone out the ablation plush copper of best arc quenching effect by the arc erosion correction in the use procedure of electric switch like this, so generally do not advocate initiatively to design such plush copper.
In fact, the through hole in the present embodiment on the movable contact spring also can be enough dark counterbore, and this counterbore oral area of being opened in the bottom of movable contact spring and this counterbore props up top of the trellis towards contact and gets final product.
Claims (5)
1. long-life electric switch of low-temperature-rise, comprise shell, stationary contact piece, movable contact spring, contact support and seesaw assembly, wherein the seesaw assembly is made of seesaw, spring and pressure head, stationary contact piece, contact support are fixed in the described shell, movable contact spring is erected in the contact support, pressure head in the described seesaw assembly is pushed down the movable contact spring upside, it is characterized in that being provided with the hole at described movable contact spring, and the oral area in this hole props up top of the trellis over against described contact.
2. the long-life electric switch of described low-temperature-rise according to claim 1 is characterized in that described hole is positioned at a side of the track that described pressure head slips at described movable contact spring upside.
3. the long-life electric switch of described low-temperature-rise according to claim 1, the quantity that it is characterized in that the hole on the described movable contact spring is two, and two holes lay respectively at described pressure head in track both sides that described movable contact spring upside slips over.
4. according to claim 1 and 2 or the long-life electric switch of 3 described low-temperature-rises, it is characterized in that propping up top of the trellis at described contact is provided with the plush copper that stretches in this through hole over against the place, hole site of described movable contact spring.
5. according to claim 1 and 2 or the long-life electric switch of 3 described low-temperature-rises, it is characterized in that described hole is through hole or counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325855 CN202796554U (en) | 2012-06-02 | 2012-06-25 | Electrical switch with low temperature-rise and long service life |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220260239 | 2012-06-02 | ||
| CN201220260239.9 | 2012-06-02 | ||
| CN 201220325855 CN202796554U (en) | 2012-06-02 | 2012-06-25 | Electrical switch with low temperature-rise and long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796554U true CN202796554U (en) | 2013-03-13 |
Family
ID=47823764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220325855 Expired - Fee Related CN202796554U (en) | 2012-06-02 | 2012-06-25 | Electrical switch with low temperature-rise and long service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632830A (en) * | 2014-10-29 | 2016-06-01 | 西门子（中国）有限公司 | Rocker switch |
-
2012
- 2012-06-25 CN CN 201220325855 patent/CN202796554U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632830A (en) * | 2014-10-29 | 2016-06-01 | 西门子（中国）有限公司 | Rocker switch |
| CN105632830B (en) * | 2014-10-29 | 2017-11-21 | 西门子（中国）有限公司 | Rocker switch |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20190625 |