CN106992084A - The universal switch of metal sealing - Google Patents
The universal switch of metal sealing Download PDFInfo
- Publication number
- CN106992084A CN106992084A CN201710413356.1A CN201710413356A CN106992084A CN 106992084 A CN106992084 A CN 106992084A CN 201710413356 A CN201710413356 A CN 201710413356A CN 106992084 A CN106992084 A CN 106992084A
- Authority
- CN
- China
- Prior art keywords
- switch
- movable contact
- elastic parts
- contact spring
- connector
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5866—Electric connections to or between contacts; Terminals characterised by the use of a plug and socket connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/20—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Push-Button Switches (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The invention discloses a kind of universal switch of metal sealing, including sealing shroud and switch core；Switching core includes switch core assembly, and switch core assembly includes activity bar assembly, elastic parts, movable contact spring component, common port connector, normally closed connector and normally opened connector；Activity bar assembly includes motion bar and moving block；Movable contact spring component includes elastic parts support member, rolling element contact and movable contact spring.Wherein, motion bar driving elastic parts moves and then makes movable contact spring component move up and down to control the conducting and disconnection of movable contact spring and normally opened connector and normally closed connector, moving block is contacted under the effect of elastic parts elastic force with common port connector, and rolling element contact is contacted under elastic parts driving with rolling element.Present invention effectively prevents signal flicker or circut breaking in switch use, it is ensured that uses safety in the larger circuit of current requirements, it is to avoid the problem of seal failure, and applicability is wide, increases the service life, more safe and reliable.
Description
Technical field
The present invention relates to one kind switch, and in particular to a kind of universal switch of metal sealing.
Background technology
Microswitch is, with small contact separation and snap-action mechanism, switch to be carried out with defined stroke and defined power dynamic
The contact mechanism of work, is covered with shell, a kind of switch for having frizzen outside it, because the contact spacing of its switch is smaller,
Therefore named microswitch.Outer mechanical force is acted on power on action reed by actuated element (push-piece, button, lever, roller etc.),
Produce snap action when acting reed and being displaced to critical point, make the movable contact of action reed end and fixed contact quick-make or
Disconnect.After the active force on actuated element is removed, action reed produces counteragent power, when actuated element reverse stroke reaches
After the action critical point of reed, counteragent is instantaneously completed.The contact spacing of microswitch is small, actuating length is short, by power it is small,
Break-make is rapid.The responsiveness of its movable contact is unrelated with actuated element responsiveness.
Traditional microswitch includes housing, panel, normally opened connector, normally closed connector, public connector and normally opened
The dynamic slide plate switched between patch piece and normally closed connector, the single shell fragment or Single spring of the dynamic slide plate action of driving, at present on the market
There is many defects in the microswitch used, it is impossible to meet many Industry code requirements because of the limitation of its own structure, it is impossible to
The higher occasion of safety coefficient requirement or field are used, and Market breadth is low.Specific defect it is following some：
(1) the pressure separation between sound contact can not be realized, Industry code requirements are not met, switch safety coefficient is low,
It can not use in the occasion for thering are security fields to require, such as elevator etc.；
(2) elastic force is produced by the deformation of metal list shell fragment or Single spring tension and realizes switch switching, it is critical in switch saltus step
Position, can exist contact from it is normally closed be switched to it is normally opened during balance occurs so that it is normally opened or normally closed to cause switch to exist
Loose contact causes switching signal scintillation occur between connector all no powers or sound contact, causes equipment not make
With such as domestic ice maker etc.；
(3) microswitch physical dimension itself is small, causes conductive metal sheet sectional area small, it is impossible to bear larger current,
The use occasion of larger current is needed to be easy for burning, such as the gardens electric tool equipped with lithium battery.
(4) switch seal all uses rubber parts, and use time easily fracture by fatigue long, the easy hardening of low temperature causes to switch nothing
Method is acted, and hot mastication seal failure can not be used in some severe rugged environments, and being easily caused switch and can not sealing causes accident to be sent out
It is raw.
The content of the invention
Goal of the invention：It is an object of the invention to provide a kind of universal switch of metal sealing, the larger electricity of microswitch is solved
Stream easily burns, signal flicker or power-off, the problem of seal easily fails in.
Technical scheme：The universal switch of a kind of metal sealing of the present invention, including sealing shroud and switch core；Sealing
One end of set offers the groove for assembling switch core, and the end face of the other end is provided with metal spring piece；The switch core
Including switch core assembly, the switch core assembly includes activity bar assembly, elastic parts, movable contact spring component, public termination
Plug-in unit, normally closed connector and normally opened connector；The activity bar assembly includes motion bar, moving block and back-moving spring；It is described dynamic
Contact assemblies include elastic parts support member, rolling element contact and movable contact spring；Wherein, motion bar driving elastic parts is moved simultaneously
It is contacted with elastic parts support member and then movable contact spring component is moved up and down with control movable contact spring and normally opened connector and
The conducting and disconnection of normally closed connector, moving block connect in a rotatable manner under the effect of elastic parts elastic force with common port connector
Touch, rolling element contact is contacted under elastic parts driving with rolling element.
Wherein, the switch core also includes base, and the switch core assembly is assemblied in the base.
In order that switch is used in harsh environment, the sealing shroud is ceramic seal set, itself and the metal spring piece
The one side of contact has an integral metal level of high temperature sintering, the metal spring piece (2) be connected with the sealing shroud (1) one
Face is coated with copper or nickel, and another side surface is concavo-convex, and the metal spring piece is welded with sealing shroud by way of high-temperature soldering
Together.
In order to increase the conductive area of movable contact spring, the elastic parts support bar and rolling element contact pass through described dynamic tactile
Piece is fixed together.
Safety and reliability is used in order to switch, rotatable first is provided between the movable contact piece component and the base
Separation member is forced, motion bar driving the first pressure separation member stirs the movable contact spring component.In order to be further ensured that
Using safety, rotatable second can also be set to force separation member, institute again between the movable contact piece component and the base
State motion bar driving the second pressure separation member and stir the movable contact spring component.
In order to prevent switch appearance from powering off or flash, the switch core assembly is additionally provided with for supporting movable block and preventing
The locating piece that only rolling element is moved, movable block snap holding element, locating piece is stuck in rolling element both sides, and the elastic parts includes master
Shell fragment, auxiliary shell fragment and movable block, described main shell fragment one end are abutted through movable block with elastic parts support member, aid in shell fragment one
End abuts the main shell fragment other end and abuts movable block, and movable block keeps contacting under auxiliary shell fragment pressure with locating piece.
Beneficial effect：(1) the universal switch of metal sealing of the present invention, is produced using shell fragment component as the drive mechanism of switch
Raw elastic force realizes switch switching, and in handoff procedure, on elastic parts the arc contact surface of movable block and locating piece grooving and
Base grooving produce pressure act on movable contact spring component, it is to avoid movable contact spring component from it is normally closed go to it is normally opened or it is normally opened go to it is normally closed
When instantaneously there is dynamic balance and cause to produce minim gap and occur flashing or circut breaking between sound contact；
(2) the universal switch of metal sealing of the present invention, movable contact spring component uses combination, and energization sectional area, which is increased, to be made
It uses safety, raising switch service life in the larger circuit of current requirements；
(3) the universal switch of metal sealing of the present invention, replaces rubber parts sealing to use, can avoid rubber using metal spring piece
Glue seal fatigue aging causes the problem of seal failure is produced, and can be used in very harsh environment, and applicability is wide, can
Apply and used in military industry field.The resistance of movable contact spring component movement is reduced using rolling element, switch sensitivity and extension is improved
Service life；
(4) the universal switch of metal sealing in the present invention, is realized in switch handoff procedure using the first normally closed separation block
Pressure of the contact of movable contact spring component with normally closed connector contact point between is separated, and recycles the second normally opened separation block to realize
The contact of movable contact spring component is separated with the pressure between normally opened connector in switch handoff procedure, and two-way isolating construction is to greatest extent
The safety coefficient for improving switch, meet safety switch industry and use.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is switch core structural representation；
Fig. 3 is switch core assembly structural representation；
Fig. 4 is movable contact spring modular construction schematic diagram；
Fig. 5 is elastic parts structural representation；
Fig. 6 is sealing shroud structural representation；
Fig. 7 is metal spring piece structural representation；
Fig. 8 is positioning block structure schematic diagram；
Fig. 9 is movable contact spring component and locating piece assembling schematic diagram；
Figure 10 is location A close-up schematic view in Fig. 9.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As Figure 1-10 shows, the universal switch of a kind of metal sealing, including sealing shroud 1 and switch core 3；Sealing shroud 1 one
The groove offered for assembling switch core 3 is held, other end end face is provided with metal spring piece 2, in order that switch is in harshness
Used in environment, sealing shroud 1 is ceramic seal set, its face matel coated material agent contacted with metal spring piece 2, and pass through height
The method of temperature sintering makes metal material agent be linked together with the surface cure of sealing shroud 1, and metal spring piece 2 is connected with sealing shroud 1
One side copper facing or nickel, and metal spring piece 2 is welded together with sealing shroud 1 by the method for high-temperature soldering, metallic elastic
The surface of part 2 is concavo-convex；Switching core 3 includes switch core assembly 4 and base 12, and switch core assembly 3 is assemblied in base 12
In；Switch core assembly 3 includes activity bar assembly 5, elastic parts 6, movable contact spring component 7, common port connector 8, normally closed patched
Part 9, normally opened connector 10 and locating piece 16；Activity bar assembly 5 includes motion bar 51, moving block 52 and back-moving spring 13；It is dynamic to touch
Piece component 7 includes elastic parts support member 71, rolling element contact 72 and movable contact spring 73, can in order that switch use is safer
Lean on, movable contact spring component is provided with pressure separation member, motion bar in a rotatable manner respectively between both sides and the base 12 about 7
51 are provided with boss, and the boss can drive pressure separation member to rotate and then stir pressure separation member with forcing separation member to contact
Movable contact spring component 7, forces separation member to include first and forces separation member 14 and second to force separation member 15, can also only set first
Force separation member 14；In order that normally closed connector 9 and normally opened connector 10 are powered with the formation of common port connector 8 loop, main bullet
Piece 61, auxiliary shell fragment 62 and moving block 52 are all made up of conductive metallic material, and rolling element is made up of 11 electrically non-conductive materials.Can also
Contacted using normally opened connector 10 and the close to portion bit strip of rolling element 11 are had into otch so as to avoid beginning with rolling element 11, in this case
Rolling element 11 can also be made of conductive metal material.Switch core assembly 4 is additionally provided with for supporting movable block 63 and preventing
The locating piece 16 that only rolling element 11 is moved, the snap holding element 16 of movable block 63, locating piece 16 is stuck in the both sides of rolling element 11, makes rolling
Body 11 can only transfer immovable in the groove inward turning of locating piece 16, have on locating piece 16 and keep the projection that contacts with movable block 63
Part, bossing is located between elastic parts support member 71 and sealing shroud 1, and the bossing of locating piece 16 is cut provided with locating piece
There are the raised platforms contacted with the holding of movable block 63 on groove 161, base 12, the raised platforms of base 12 are provided with base grooving
111, movable block 63 is pressed on locating piece by auxiliary shell fragment 62 at locating piece grooving 161 and drain pan grooving 111 on the same line
On grooving 161 and base grooving 111, one end that movable block 63 is contacted with locating piece grooving 161 and base grooving 111 is in circular arc stream
Line style；So setting effect is arc contact surface and the locating piece grooving of movable block 13 when switch is in saltus step critical localisation
161 and drain pan grooving 111 contact, the grooving inclined-plane of movable block 63 and two still not at plumbness so that produce push power effect
On movable contact spring component 7, it is to avoid occur producing between dynamic balance, sound contact when now main shell fragment 61 is vertical with movable contact spring component 7
Raw minim gap causes switch circuit breaking or scintillation；Wherein, sound contact：Movable contact refers to touching for movable contact spring component two ends
Point, stationary contact refers to the contact point of connector assembly and movable contact spring component.Elastic parts 6 includes main shell fragment 61, aids in shell fragment
62 and movable block 63, main one end of shell fragment 61 is abutted through movable block 63 with the bending section of elastic parts support member 71, aids in shell fragment 62
One end abuts the main shell fragment other end and abuts the groove of movable block 63, and movable block 63 is kept under the auxiliary pressure of shell fragment 62 with locating piece 16
Contact, is so set also for preventing switch appearance from powering off or flash.
Wherein, the driving of motion bar 51 elastic parts 6 moves and it is contacted with elastic parts support member 71 and then is made to touch
Piece component 7 moves up and down to control the conducting and disconnection of movable contact spring 73 and normally opened connector 10 and normally closed connector 9, moving block
52 the elastic force of elastic parts 6 effect under contacted with common port connector 8, rolling element contact 72 elastic parts 6 driving under with
Rolling element 11 is contacted.
Operation principle：Original state movable contact spring 73 keeps contacting shape under the effect of the pressure of elastic parts 6 with normally closed connector 9
State, while movable contact spring component 7 keeps contacting under the effect of the pressure of elastic parts 6 with rolling element 11, moving block 52 is in elastic parts 6
Elastic force effect is lower to keep contacting with common port connector 8, and normally closed connector 9 is powered with the formation of common port connector 8 loop.Metal
Elastic component 2 under external force down move by triggered activity bar assembly 5, the compression of elastic parts 6, while activity bar assembly 5
On moving block 52 contact rotation with the surface boss of common port connector 8, when elastic parts 6 and movable contact spring component 7 are close to vertical
When, moving block 52, which contacts public connector 8, in activity bar assembly 5 makes moving block 52 be in most with main shell fragment 61 on elastic parts 6
Big decrement and moment rotates down, moment forms angle between movable contact spring component 7 and elastic parts 6, movable contact spring component 7 by
Upward power is acted on and moment is up slided and contacted with normally opened connector 10, and now normally closed connector 9 is powered off, and normally opened connector 10 connects
It is logical.Motion bar 51 continues down to move, and motion bar 51 is contacted with the first pressure separation member 14, and first forces separation member 15 to surround bottom
Seat cylinder rotation, when movable contact spring 73 occurs without under up motion conditions once in a while, now first force separation member 14 can force by
Movable contact spring 73 is separated with normally closed connector 9, so as to ensure to switch normally closed connector power-off；When activity bar assembly 5 is in back-moving spring
Under 13 power effect back in motion process, elastic parts 6 and movable contact spring component 7 close to it is vertical when, rotation in activity bar assembly 5
The surface boss of the contact common port of block 52 connector 8 is rotated, and main shell fragment 61 is in maximum compressibility on elastic parts 6 and moment is upward
Rotate, moment forms angle between movable contact spring component 7 and elastic parts 6, and moment is past by downward force effect for movable contact spring component 7
Lower slider is contacted with normally closed connector 9, and now normally closed connector 9 is powered, and normally opened connector 10 is powered off；Motion bar 5 continues up
Motion, motion bar 5 is contacted with the second pressure separation member 15, and second forces separation member 15 to be rotated around base cylindrical, works as movable contact spring
73 occur without under down motion conditions once in a while, and now the second pressure separation member 15 can force movable contact spring 73 and normally opened contact 10
Separation, so as to ensure that normally opened contact 10 is powered off.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of equivalents can be carried out to technical scheme, this
A little equivalents belong to protection scope of the present invention.It is further to note that described in above-mentioned embodiment
Each particular technique feature, in the case of reconcilable, can be combined by any suitable means.In order to avoid not
Necessary repetition, the present invention no longer separately illustrates to various possible combinations.
Claims (10)
1. the universal switch of a kind of metal sealing, it is characterised in that including sealing shroud (1) and switch core (3)；Sealing shroud (1)
One end offer groove for assembling switch core (3), the end face of the other end is provided with metal spring piece (2)；The switch
Core (3) include switch core assembly (4), it is described switch core assembly (4) include activity bar assembly (5), elastic parts (6),
Movable contact spring component (7), common port connector (8), normally closed connector (9) and normally opened connector (10)；The activity bar assembly (5)
Including motion bar (51) and moving block (52)；The movable contact spring component (7) includes elastic parts support member (71), rolling element and contacted
Part (72) and movable contact spring (73)；Wherein, motion bar (51) driving elastic parts (6) moves and makes itself and elastic parts support member
(71) contact and then make movable contact spring component (7) move up and down to control leading for movable contact spring and normally opened connector and normally closed connector
Logical and disconnection, moving block (52) is contacted in a rotatable manner under the effect of elastic parts (6) elastic force with common port connector (8),
Rolling element contact (72) is contacted under elastic parts (6) driving with rolling element (11).
2. the universal switch of metal sealing according to claim 1, it is characterised in that the sealing shroud (1) is close for ceramics
Big envelope, it has the integral metal level of high temperature sintering with the one side that the metal spring piece (2) is contacted.
3. the universal switch of metal sealing according to claim 2, it is characterised in that the metal spring piece (2) and institute
The one side for stating sealing shroud (1) contact is coated with copper or nickel, and another side surface is concavo-convex.
4. the universal switch of metal sealing according to claim 3, it is characterised in that the metal spring piece and sealing shroud
Welded together by way of high-temperature soldering.
5. the universal switch of metal sealing according to claim 1, it is characterised in that the switch core (3) also includes
Base (12), it is inner that the switch core assembly (4) is assemblied in the base (12).
6. the universal switch of metal sealing according to claim 1, it is characterised in that the elastic parts support member (71)
It is fixed together with rolling element contact (72) by the movable contact spring (73).
7. the universal switch of metal sealing according to claim 1, it is characterised in that the movable contact piece component (7) and institute
State and rotatable first is provided between base (12) forces separation member (14), motion bar (51) driving described first is forced
Separation member (14) stirs the movable contact spring component (7).
8. the universal switch of metal sealing according to claim 7, it is characterised in that the movable contact piece component (7) and institute
State and rotatable second is provided between base (12) forces separation member (15), motion bar (51) driving described second is forced
Separation member (15) stirs the movable contact spring component (7).
9. the universal switch of metal sealing according to claim 1, it is characterised in that the switch core assembly (4) is also
Provided with for supporting movable block (63) and preventing the mobile locating piece (16) of rolling element (11), movable block (63) snap holding element
(16), locating piece (16) is stuck in rolling element (11) both sides.
10. the universal switch of metal sealing according to claim 9, it is characterised in that the elastic parts includes main bullet
Piece (61), auxiliary shell fragment (62) and movable block (63), main shell fragment (61) one end passes through movable block (63) and elastic parts support member
(71) abut, auxiliary shell fragment (62) one end abuts main shell fragment (61) other end and abuts movable block (63), and movable block (63) can be auxiliary
Help under shell fragment (62) pressure with locating piece (16) keep contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413356.1A CN106992084B (en) | 2017-06-05 | 2017-06-05 | The universal switch of metal sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413356.1A CN106992084B (en) | 2017-06-05 | 2017-06-05 | The universal switch of metal sealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106992084A true CN106992084A (en) | 2017-07-28 |
| CN106992084B CN106992084B (en) | 2019-05-21 |
Family
ID=59421554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710413356.1A Active CN106992084B (en) | 2017-06-05 | 2017-06-05 | The universal switch of metal sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106992084B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1099024A (en) * | 1964-03-07 | 1968-01-10 | Rau Swf Autozubehoer | An electrical change-over switch |
| JPS53146075U (en) * | 1977-04-23 | 1978-11-17 | ||
| DE3513803A1 (en) * | 1985-04-17 | 1986-10-23 | Leopold Kostal GmbH & Co KG, 5880 Lüdenscheid | Electrical switch |
| US6384358B1 (en) * | 1999-11-26 | 2002-05-07 | Satori Electric Co., Ltd. | Direct current switch capable of turning on slowly and off quickly |
| CN103971957A (en) * | 2013-01-31 | 2014-08-06 | 上海永星电子开关有限公司 | Refrigerator door switch |
| CN104051165A (en) * | 2014-06-27 | 2014-09-17 | 陕西群力电工有限责任公司 | Full-sealed precise microswitch |
| CN205789631U (en) * | 2016-06-15 | 2016-12-07 | 深圳市正硕丰电子科技有限公司 | A kind of quick action type normally closed switch |
| CN206076106U (en) * | 2016-08-29 | 2017-04-05 | 三实电器(漳州)有限公司 | A kind of duplex microswitch |
-
2017
- 2017-06-05 CN CN201710413356.1A patent/CN106992084B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1099024A (en) * | 1964-03-07 | 1968-01-10 | Rau Swf Autozubehoer | An electrical change-over switch |
| JPS53146075U (en) * | 1977-04-23 | 1978-11-17 | ||
| DE3513803A1 (en) * | 1985-04-17 | 1986-10-23 | Leopold Kostal GmbH & Co KG, 5880 Lüdenscheid | Electrical switch |
| US6384358B1 (en) * | 1999-11-26 | 2002-05-07 | Satori Electric Co., Ltd. | Direct current switch capable of turning on slowly and off quickly |
| CN103971957A (en) * | 2013-01-31 | 2014-08-06 | 上海永星电子开关有限公司 | Refrigerator door switch |
| CN104051165A (en) * | 2014-06-27 | 2014-09-17 | 陕西群力电工有限责任公司 | Full-sealed precise microswitch |
| CN205789631U (en) * | 2016-06-15 | 2016-12-07 | 深圳市正硕丰电子科技有限公司 | A kind of quick action type normally closed switch |
| CN206076106U (en) * | 2016-08-29 | 2017-04-05 | 三实电器(漳州)有限公司 | A kind of duplex microswitch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106992084B (en) | 2019-05-21 |
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