CN203406186U - A single-pole double-throw microswitch - Google Patents

A single-pole double-throw microswitch Download PDF

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Publication number
CN203406186U
CN203406186U CN201320458572.5U CN201320458572U CN203406186U CN 203406186 U CN203406186 U CN 203406186U CN 201320458572 U CN201320458572 U CN 201320458572U CN 203406186 U CN203406186 U CN 203406186U
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CN
China
Prior art keywords
reed
contact
pole double
flat
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.)
Expired - Lifetime
Application number
CN201320458572.5U
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Chinese (zh)
Inventor
蒋欣欣
赵绪怀
张莉
崔艳梅
王云香
丁乡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHIJIAZHUANG NO850 ELECTRONIC Co Ltd
Original Assignee
SHIJIAZHUANG NO850 ELECTRONIC Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
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Priority to CN201320458572.5U priority Critical patent/CN203406186U/en
Application granted granted Critical
Publication of CN203406186U publication Critical patent/CN203406186U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a single-pole double-throw microswitch comprising a pedestal, a button, a reed assembly, a top contact sheet, and a bottom contact sheet. Normally-closed contact is formed by the top contact sheet and the reed assembly. Normally-opened contact is formed by the bottom contact sheet and the reed assembly. The single-pole double-throw microswitch is characterized in that the reed assembly comprises a supporting reed, a flat reed, and an arch reed, that the supporting reed is in a Z shape, that one end of the supporting reed is used as a wiring end and is extended out of the pedestal, that the other end of the supporting reed is equipped with a clamping groove and is used as a supporting end, that the flat reed is arranged under the button, that one end of the flat reed is lapped on the supporting reed, that the other end of the flat reed is equipped with a contact, that one end of the arch reed is supported in the clamping groove of the supporting reed, and that the other end of the arch reed is fixed on the a side of the flat reed, wherein the side of the flat reed is close to the contact. Using the combined reed assembly, the single-pole double-throw microswitch has better anti-fatigue performance, and resolves a problem that the sensitivity of the microswitch is reduced because of the decrease in the elastic force in a conventional spring/reed assembly.

Description

A kind of single-pole double throw sensitive switch
Technical field
The utility model relates to a kind of sensitive switch, specifically a kind of single-pole double throw sensitive switch.
Background technology
Switch belongs to components and parts, and it is mainly used in AC and DC circuit and requires action slightly and control accurate occasion, can be widely used in the circuit conversion of various electric equipments.Switch is of a great variety, as rotary switch, toggle switch, soft-touch control and sensitive switch etc.Wherein sensitive switch is a kind of precision optical machinery electric switch with quick-acting mechanism and small contact gap, plays conversion, control action in circuitry, is used for being switched on or switched off certain circuit.Sensitive switch has single-pole single-throw(SPST, single-pole double throw, hilted broadsword the various ways such as to throw more, and various forms has its different purposes separately, and wherein purposes is single-pole double throw sensitive switch comparatively widely, is common in various electrical control equipments.
Spring/spring assembly is the strength member in sensitive switch, generally button, spring and reed, consists of.Spring wherein, as a buffer unit, is alleviated the pressure that reed is subject to, and after external force is eliminated, reed is returned to from allowing state.This sensitive switch in long-term use procedure, the loss to some extent of the elastic performance of its spring, thus can not make the contact on reed contact with contact, reduced the sensitivity of switch, the equipment that it is controlled has a negative impact.
Utility model content
The purpose of this utility model is to provide a kind of single-pole double throw sensitive switch, to solve after long-term use of spring in existing sensitive switch spring assembly, and the problem of elastic performance loss, switch sensitivity.
The purpose of this utility model is achieved in that a kind of single-pole double throw sensitive switch, include pedestal, button, spring assembly and with described spring assembly form normally closed/often open the up/down contact contacting, it is characterized in that, described spring assembly consists of supporting spring, flat reed and bow reed; Described supporting spring is zig-zag type, and described pedestal is stretched out as terminals in its one end, and the other end is provided with draw-in groove, as support end; Described flat reed is positioned at the below of described button, and its one end is overlapped on described supporting spring, and the other end is provided with contact; One end support of described bow reed is connected in the draw-in groove of described supporting spring, and the other end is fixed on the described flat reed near contact one side.
The thickness of the terminals of described supporting spring is greater than the thickness of support end.
The support end of described supporting spring is divided into vertical district, flat region and bent area successively; In described vertical district, be provided with V-type draw-in groove, described flat region and described bent area are 160 ° of angles.
The thickness attenuation successively in the described bent area on described supporting spring, described flat region and described vertical district.
Upper end at described button is provided with limited cap.
Described contact is dome shape, and the position contacting with described contact on described up/down contact is netted.
On the surface of described contact, be coated with silver-nickel layer.
The utility model adopts the spring assembly of combination, has better anti-fatigue performance, has eliminated the problem of the sensitive switch sensitivity causing because of spring force decline in existing spring/spring assembly.In addition, by the top at button, limited cap is set, has avoided the problem of damaging because of the excessive reed causing of exerting oneself.Contact on reed has spherical surface, and is coated with silver-nickel layer, not only makes contact have higher hardness, resistance to wear and arc resistant scaling loss ability, and has good anti-metal transfer ability.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1, button, 2, supporting spring, 3, bow reed, 4, flat reed, 5, upper contact, 6, lower contact, 7, pedestal, 8, limited cap, the 9, first terminals, the 10, the 3rd terminals, the 11, second terminals.
Embodiment
Below by embodiment, the utility model is described further.
As shown in Figure 1, the utility model includes pedestal 7, button 1, spring assembly, upper contact 5 and lower contact 6.Spring assembly is arranged in the inner chamber of pedestal 7, and it is comprised of supporting spring 2, flat reed 4 and bow reed 3.Supporting spring 2 is " it " font, and pedestal is stretched out in its one end, is the first terminals 9, and the other end is support end, and support end consists of vertical district, flat region and bent area, in vertical district, is provided with a V-type draw-in groove, and flat region and bent area are 160 ° of angles; The thickness of the first terminals 9 of supporting spring 2 is greater than the thickness of support end, and support end is by extremely vertically district's thickness attenuation gradually of bent area.One end of flat reed 4 is overlapped on supporting spring 2, and the other end is provided with the contact of tool spherical surface, and is coated with silver-nickel layer at contact surface.One end support of bow reed 3 is in the V-type draw-in groove of supporting spring 2, and the other end is fixed on a side of close contact on flat reed 4.The position contacting with contact on upper contact 5 and lower contact 6, is provided with meshy surface, and the other end of upper contact 5 and lower contact 6 stretches out respectively pedestal, as the second terminals 11 and the 3rd terminals 10.Button 1 is through pedestal 7, and the relative of its lower end and flat reed 4 also contacts, and pedestal 7 is exposed in its upper end, and is provided with limited cap 8 in the upper end of button 1.
Under nature, due to the elastic force effect of bow reed 3, flat reed 4 is propped up, and makes contacting of contact on flat reed 4 and upper contact 5, and the first terminals 9 and the second terminals 11 connections, form normally closed contact;
Press the button, flat reed 4 is depressed, and the contact on flat reed 4 is contacted with lower contact 6, and the first terminals 9 and the 3rd terminals 10 are connected, and form and often open contact, complete thus one-off conversion; Bend also pressurized generation deformation of reed 3 simultaneously;
When external force is eliminated, bow reed 3 recovers nature, and flat reed 4 is propped up, and simultaneously by button 1 jack-up, the contact on flat reed 4 contacts with upper contact 5 again, and the first terminals 9 and the second terminals 11 are connected, and form normally closed contact.
Due to the effect of button 1 upper limit cap 8, guaranteed that deformation quantity that flat reed 4 produces, in it can tolerance range, avoids because of the excessive sensitive switch that damages of exerting oneself.

Claims (7)

1. a single-pole double throw sensitive switch, include pedestal, button, spring assembly and with described spring assembly form normally closed/often open the up/down contact contacting, it is characterized in that, described spring assembly consists of supporting spring, flat reed and bow reed; Described supporting spring is zig-zag type, and described pedestal is stretched out as terminals in its one end, and the other end is provided with draw-in groove, as support end; Described flat reed is positioned at the below of described button, and its one end is overlapped on described supporting spring, and the other end is provided with contact; One end support of described bow reed is connected in the draw-in groove of described supporting spring, and the other end is fixed on the described flat reed near contact one side.
2. single-pole double throw sensitive switch according to claim 1, is characterized in that, the thickness of the terminals of described supporting spring is greater than the thickness of support end.
3. single-pole double throw sensitive switch according to claim 1 and 2, is characterized in that, the support end of described supporting spring is divided into vertical district, flat region and bent area successively; In described vertical district, be provided with V-type draw-in groove, described flat region and described bent area are 160 ° of angles.
4. single-pole double throw sensitive switch according to claim 3, is characterized in that, the thickness attenuation successively in the described bent area on described supporting spring, described flat region and described vertical district.
5. single-pole double throw sensitive switch according to claim 1, is characterized in that, in the upper end of described button, is provided with limited cap.
6. single-pole double throw sensitive switch according to claim 1, is characterized in that, described contact is dome shape, and the position contacting with described contact on described up/down contact is netted.
7. single-pole double throw sensitive switch according to claim 5, is characterized in that, on the surface of described contact, is coated with silver-nickel layer.
CN201320458572.5U 2013-07-30 2013-07-30 A single-pole double-throw microswitch Expired - Lifetime CN203406186U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320458572.5U CN203406186U (en) 2013-07-30 2013-07-30 A single-pole double-throw microswitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320458572.5U CN203406186U (en) 2013-07-30 2013-07-30 A single-pole double-throw microswitch

Publications (1)

Publication Number Publication Date
CN203406186U true CN203406186U (en) 2014-01-22

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Application Number Title Priority Date Filing Date
CN201320458572.5U Expired - Lifetime CN203406186U (en) 2013-07-30 2013-07-30 A single-pole double-throw microswitch

Country Status (1)

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CN (1) CN203406186U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107871631A (en) * 2017-09-26 2018-04-03 贵州振华华联电子有限公司 One kind has extremely highly sensitive microswitch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107871631A (en) * 2017-09-26 2018-04-03 贵州振华华联电子有限公司 One kind has extremely highly sensitive microswitch

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Granted publication date: 20140122

CX01 Expiry of patent term