CN204760256U - Microswitch - Google Patents
Microswitch Download PDFInfo
- Publication number
- CN204760256U CN204760256U CN201520434917.2U CN201520434917U CN204760256U CN 204760256 U CN204760256 U CN 204760256U CN 201520434917 U CN201520434917 U CN 201520434917U CN 204760256 U CN204760256 U CN 204760256U
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- CN
- China
- Prior art keywords
- movable contact
- pin
- contact flat
- connecting rod
- sensitive switch
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a bestow pressure and trigger switch's microswitch. This microswitch includes casing, touch switch and touches the briquetting, touch the briquetting and connect the touch switch, the touch switch include firstly participate in, the second is participated in, activity contact and connecting rod, first participating in is participated in upper portion with the second and all is located the casing, and the casing below is stretched out to the lower part, the second is participated in the upper end and is equipped with the transversely portion of bending, the activity contact is horizontal to be set up and is located that first participate in upper portion and the second is participated in between the upper portion, the stiff end joint of activity contact is on first upper portion of participating in, and the below of the portion of transversely bending is located to the free end of activity contact, is equipped with the contraction section of bending of an uplift on the activity contact, the connecting rod outer end articulates on touching the briquetting, and connecting rod middle part articulates in the casing, and the movable contact below parallel connection movable contact spring of taking over a job is stretched into to connecting rod the inner, the articulated department in connecting rod middle part is higher than movable contact. This microswitch novel structure and reasonable, trigger the sensitivity, stability is good, and the security is higher.
Description
Technical field
The utility model belongs to sensor field, particularly a kind of sensitive switch bestowing pressure and trigger switch.
Background technology
Hot-water bottle common in the market is all divided into base and heating kettle body, heating kettle body puts into base, just use sensitive switch, this sensitive switch by switch case, be arranged on touch switch in switch case and touch briquetting, by touching shake-up briquetting, thus the touch switch heating of opening inside sensitive switch just starts.Certainly, this sensitive switch also generally uses in other areas.
At present, rely on and bestow less pressure and the sensitive switch that triggers has following deficiency:
When one, driving the parts of sensitive switch more, needing higher build-up tolerance when assembling between each parts, causing assembling difficulty and less stable;
Two, existing sensitive switch not only lacks overtemperature protection, and the fail safe of self is not high, and internal structure is complicated, and layout is too compact, even if arrange overheating protection circuit, also cause its overall structure too complex, cost is high.
Three, additional overheating protection circuit utilizes fuse usually, and the excessive just fusing of primary current, cause and once destroy and will keep in repair, useful life is short.
Four, existing sensitive switch generally has spring to realize switch at the annex of trigger member, spring is with pressure oscillation linear extension or compression, not only can be unstable when vibrating, but also it is easily tired and change, therefore poor stability, the situations such as the dynamic or loose contact of easy generation false touch, result of use is poor.
Therefore existing sensitive switch needs to improve.
Utility model content
For defect and the deficiency of prior art, technical problem to be solved of the present utility model be to provide a kind of novel structure and rationally, trigger sensitive, good stability, and the sensitive switch that fail safe is higher.
For realize solve above-mentioned technical problem to be solved, the utility model by the following technical solutions:
A kind of sensitive switch, comprises housing, is arranged on the touch switch in housing and touches briquetting; Described shake-up briquetting is movably arranged on hull outside, and connects touch switch; Described touch switch comprises: the first pin, the second pin, movable contact flat and connecting rod; First pin and the second pin are all longitudinally arranged, and its top is all positioned at housing, and bottom is stretched out below housing; Second pin upper end is provided with the transverse fold portion of sensing first pin; Movable contact flat horizontally set and between the first pin top and the second pin top; The stiff end of movable contact flat is connected to the top of the first pin, and the free end of movable contact flat is located at the below in transverse fold portion, and movable contact flat is provided with the bending contraction section of a protuberance; Connecting rod outer end is hinged on described shake-up briquetting, is hinged in described housing in the middle part of connecting rod, and connecting rod the inner to be stretched into below movable contact flat and connected movable contact flat; In the middle part of described connecting rod, the horizontal level of hinged place is higher than the horizontal level of described movable contact flat.
As preferably, described connecting rod the inner is provided with crotch; Described movable contact flat is provided with and corresponding links hole; To link described in crotch hooks in hole and spacing up and down to described movable contact flat free end.
As preferably, described first pin top is provided with the movable notch that can pass for connecting rod; Described movable contact flat stiff end is provided with the free gap can passed for connecting rod.
As preferably, described first pin top is the first furcation of Y-shaped structure, and movable notch is positioned in the middle of the first furcation; Described movable contact flat stiff end is provided with the second furcation of Y-shaped structure, and free gap is positioned in the middle of the second furcation.
As preferably, the first pin top is provided with arc gap groove, and the end face of described movable contact flat stiff end is curved, and snaps in described arc gap groove.
As preferably, described movable contact flat free end is provided with moving contact, and bottom surface, transverse fold portion is provided with the fixed contact coordinated with described moving contact, and contact better effects if, stops loose contact, use more stable, more durable.
As preferably, described movable contact flat is temperature-sensitive memory metal sheet, and movable contact flat is provided with a bending contraction section up or down swelled.Overload protection is carried out to sensitive switch, and overcurrent protection structure is simple, not newly-increased circuit, by the protection of fusing mode destructiveness, sensitive switch longer service life neither be made.
Compared with existing sensitive switch, the utility model has following beneficial effect:
First, the parts of sensitive switch of the present utility model are less, novel structure and rationally, mix proportion is easier to when assembling, and highly versatile, ensures stability again.
Secondly, sensitive switch of the present utility model make use of the lever principle of connecting rod in trigger member, abandon using spring, make the open and closed in trigger switch distincter, no longer there is the situations such as the dynamic or loose contact of false touch that spring fatigue, vibration and poor fit bring, make microswitch structure of the present utility model more stable, longer service life.
Finally; sensitive switch of the present utility model is in above-mentioned further preferred version; movable contact flat utilizes temperature-sensitive memory metal; the basis not only not increasing structure achieves overload overtemperature protection, improves the fail safe of sensitive switch self, and; utilize temperature-sensitive memory metal; even if there is overload, neither destructive protect, after cooling, this sensitive switch can continue to use.
Accompanying drawing explanation
Fig. 1: the cross-sectional view of the utility model embodiment.
Fig. 2: the perspective view of movable contact flat in the utility model embodiment.
Fig. 3: the perspective view of the first pin in the utility model embodiment.
In figure: housing 1; Hinged pillar 11; First pin 2; Arc gap groove 21; Movable notch 22; Bifurcated plate 23; Second pin 3; Transverse fold portion 31; Fixed contact 32; Movable contact flat 4; Bending contraction section 41; Moving contact 42; Link hole 43; Free gap 44; Bifurcated terminals 45; Touch briquetting 5; Connecting rod 7; Crotch 71 upper cover 8.
Embodiment
Below in conjunction with accompanying drawing, description of illustrating further is done to the utility model, but protection range of the present utility model is not limited to this.
Embodiment:
A kind of sensitive switch as Figure 1-3, is made up of housing 1, upper cover 8, touch switch and shake-up briquetting 5.Touch briquetting 5 to be movably arranged on outside housing 1, and connect touch switch; Touching briquetting 5 can be up and down with pressure effect, thus drives the action that touch switch completes out and closes.Above-mentioned touch switch main body is arranged in housing 1, and upper cover 8 covers, on housing, touch switch is enclosed in case inside, completes assembling.Wherein:
Touch switch comprises the first pin 2, second pin 3, movable contact flat 4 and connecting rod 7, first pin 2 and the second pin 3 is all longitudinally arranged, and its top is all positioned at housing 1, and bottom is stretched out below housing 1.When switch disconnects, be not communicated with between the first pin 2 and the second pin 3, when switch closes, the first pin 2 and the second pin 3 are by movable contact flat 4 electric connection.Particularly, first pin 2 as shown in Figure 3, first pin 2 top is the first furcation of Y-shaped structure, first furcation comprises the bifurcated plate 23 of pair of right and left symmetry, part fork plate 23 on the left side and part the movable notch 22 leaving between fork plate 23 and can pass for connecting rod 7 on the right side, namely movable notch 22 is positioned in the middle of the first furcation.Second pin 3 upper end is provided with the transverse fold portion 31 of sensing first pin 2.Above-mentioned movable contact flat 4 horizontally set and between the first pin 2 top and the second pin 3 top, the stiff end of movable contact flat 4 is connected to the top of the first pin 2, and the free end of movable contact flat 4 is located at the below in transverse fold portion 31.Particularly, movable contact flat 4 stiff end is provided with the second furcation of Y-shaped structure, second furcation also comprises the bifurcated terminals 45 of pair of right and left symmetry, and also leave the free gap 44 can passed for connecting rod 7 between left and right bifurcated terminals 45, namely free gap 44 is positioned in the middle of the second furcation.
The top of the first pin 2 and left and right bifurcated plate 23 are equipped with arc gap groove 21, and the end face of movable contact flat 4 stiff end and left and right bifurcated terminals 45 is all curved, and left and right bifurcated terminals 45 is corresponding respectively snaps in the arc gap groove 21 of left and right bifurcated plate 23.Movable contact flat 4 free end is provided with moving contact 42, and bottom surface, transverse fold portion 31 is provided with the fixed contact 32 coordinated with moving contact 42.
Above-mentioned connecting rod 7 outer end is hinged on touches on briquetting 5, and be provided with hinged pillar 11 inside housing 1, be hinged on the hinged pillar 11 in housing 1 in the middle part of connecting rod 7, connecting rod 7 the inner is provided with crotch 71, and movable contact flat 4 is provided with and corresponding links hole 43.Connecting rod 7 the inner to be stretched into below movable contact flat 4 and is connected and hooks by crotch 71 mode linked in hole 43 and connect movable contact flat 4.After crotch 71 hooks and links hole 43, the activity of crotch 71 can be spacing up and down to movable contact flat 4 free end, directly drives the upper-lower position of movable contact flat 4 free end.And the horizontal level of hinged place is higher than the horizontal level of movable contact flat 4 in the middle part of connecting rod 7, in the middle part of connecting rod 7, hinged place is as fulcrum, adopts lever principle, and press down when touching briquetting 5, moving contact 42 connects fixed contact 32, and switch closes.
Above-mentioned movable contact flat 4 is temperature-sensitive memory metal sheets, movable contact flat 4 is provided with the bending contraction section 41 of a protuberance, this bending contraction section 41 has certain elasticity time flat, and under shake-up briquetting 5 is not bestowed the situation of pressure, the moving contact 42 that can order about movable contact flat 4 departs from fixed contact 32 downwards.The material of movable contact flat 4 is temperature-sensitive memory metals, and there is bending contraction section 41, when the current overload at the first pin 2 and the second pin 3 two ends, movable contact flat 4 is overheated soon, and now movable contact flat 4 is out of shape, especially bending contraction section 41 rapid desufflation, now, first pin 2 does not contact in clamping with movable contact flat 4 stiff end, and even between the moving contact of movable contact flat 4 and the fixed contact 32 of the second grafting, position is not corresponding yet, the electric connection of both cut-outs.
During use, when the housing 1 of sensitive switch is fixedly connected with transducer, trigger unit on transducer applies downward pressure to shake-up briquetting 5, touch briquetting 5 downward, by the leverage of connecting rod 7, the free end of movable contact flat 4 is raised up, small compression bending contraction section 41, the moving contact 42 of movable contact flat 4 contacts with fixed contact 32 simultaneously, and then is communicated with first pin 2 and second pin 3 at two ends, and sensitive switch is output signal just;
Movable contact flat 4 under normality extends to original state by bending contraction section 41, order about connecting rod 7, make to touch briquetting 5 return and keep movable contact flat 4 lateral balance, do not contact between movable contact flat 4 with transverse fold portion 31, such vibrational power flow, object is to make microswitch structure simple, be quick on the draw, use stable.When the voltage overload at the first pin 2 and the second pin 3 two ends, movable contact flat 4 produces temperature rise; the movable contact flat 4 bending contraction section 41 that memory metal makes shrinks; and bent downward is out of shape; thus make it depart from transverse fold portion 31 open circuit, thus realize the overcurrent protection of sensitive switch to transducer.
Above-mentioned connecting rod 7 is insulated connecting rods, and object is to allow sensitive switch safety and stability more, prevents short circuit or overload protection to lose efficacy.
Above embodiment illustrates by way of example, and it can not as to restriction of the present utility model.When not deviating from the utility model scope, its principal character may be used for various execution mode.
Claims (7)
1. sensitive switch, comprises housing (1), is arranged on the touch switch in housing (1) and touches briquetting (5); Described shake-up briquetting (5) is movably arranged on housing (1) outside, and connects touch switch; It is characterized in that: described touch switch comprises: the first pin (2), the second pin (3), movable contact flat (4) and connecting rod (7);
First pin (2) and the second pin (3) are all longitudinally arranged, and its top is all positioned at housing (1), and housing (1) below is stretched out in bottom;
Second pin (3) upper end is provided with the transverse fold portion (31) of sensing first pin (2);
Movable contact flat (4) horizontally set and be positioned between the first pin (2) top and the second pin (3) top;
The stiff end of movable contact flat (4) is connected to the top of the first pin (2), the free end of movable contact flat (4) is located at the below of transverse fold portion (31), and movable contact flat (4) is provided with the bending contraction section (41) of a protuberance;
Connecting rod (7) outer end is hinged on described shake-up briquetting (5), connecting rod (7) middle part is hinged in described housing (1), and connecting rod (7) the inner is stretched into movable contact flat (4) below and connected movable contact flat (4);
The horizontal level of hinged place, described connecting rod (7) middle part is higher than the horizontal level of described movable contact flat (4).
2. sensitive switch according to claim 1, is characterized in that: described connecting rod (7) the inner is provided with crotch (71); Described movable contact flat (4) is provided with and corresponding links hole (43); Hole (43) is linked interior and spacing up and down to described movable contact flat (4) free end described in crotch (71) hooks.
3. sensitive switch according to claim 1, is characterized in that: described first pin (2) top is provided with the movable notch (22) that connecting rod (7) can be supplied to pass; Described movable contact flat (4) stiff end is provided with the free gap (44) that connecting rod (7) can be supplied to pass.
4. sensitive switch according to claim 3, is characterized in that: described first pin (2) top is the first furcation of Y-shaped structure, and movable notch (22) is positioned in the middle of the first furcation; Described movable contact flat (4) stiff end is provided with the second furcation of Y-shaped structure, and free gap (44) are positioned in the middle of the second furcation.
5. the sensitive switch according to claim 1-4 any one, it is characterized in that: the first pin (2) top is provided with arc gap groove (21), the end face of described movable contact flat (4) stiff end is curved, and snaps in described arc gap groove (21).
6. the sensitive switch according to claim 1-4 any one, it is characterized in that: described movable contact flat (4) free end is provided with moving contact (42), transverse fold portion (31) bottom surface is provided with the fixed contact (32) coordinated with described moving contact (42).
7. the sensitive switch according to claim 1-4 any one, is characterized in that: described movable contact flat (4) is temperature-sensitive memory metal sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434917.2U CN204760256U (en) | 2015-06-22 | 2015-06-22 | Microswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434917.2U CN204760256U (en) | 2015-06-22 | 2015-06-22 | Microswitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204760256U true CN204760256U (en) | 2015-11-11 |
Family
ID=54474936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520434917.2U Withdrawn - After Issue CN204760256U (en) | 2015-06-22 | 2015-06-22 | Microswitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204760256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952649A (en) * | 2015-06-22 | 2015-09-30 | 朱正直 | Microswitch |
-
2015
- 2015-06-22 CN CN201520434917.2U patent/CN204760256U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952649A (en) * | 2015-06-22 | 2015-09-30 | 朱正直 | Microswitch |
| CN104952649B (en) * | 2015-06-22 | 2017-05-17 | 广东誉顺电器有限公司 | Microswitch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20170517 |