CN103887100A - Plane full contact switch - Google Patents
Plane full contact switch Download PDFInfo
- Publication number
- CN103887100A CN103887100A CN201210595527.4A CN201210595527A CN103887100A CN 103887100 A CN103887100 A CN 103887100A CN 201210595527 A CN201210595527 A CN 201210595527A CN 103887100 A CN103887100 A CN 103887100A
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- switch
- press
- piece
- guide plate
- full contact
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Abstract
The invention discloses a plane full contact switch which comprises a switch seat with a switching part, and a press part with a number of supporting parts and a press face. The supporting parts are detachably combined with the switch seat. The press face is pressed by a user. When the user applies a force on the press face, a press point is formed. When the press point is located at the center of the press face, the supporting parts break away from the switch seat, so that the press part pushes the switching part to switch between on and off of the switch. When the press point deviates from the center of the press face, at least one supporting part on the opposite side of the press point is combined with the switch seat to form a fulcrum, and other supporting parts break away from the switch seat. A lever is formed between the fulcrum and the press point, so that the press part pushes the switching part to switch between on and off of the switch. According to the invention, the user can press any position on the outer side of the press part to control on and off of the plane full contact switch; the touch sensitivity and stability of the full contact switch are improved; and the plane full contact switch has the advantages of compact structure and high practicability, and has a great commercial value.
Description
Technical field
The present invention relates to switching technique field, the especially a kind of switch that can press optional position on switch surface and realize switch on and off.
Background technology
Switch, as using maximum electric elements in people's daily life, has experienced repeatedly technological change, pursues good looking appearance, the comfortable durable and sensitive trend that becomes switch research and development of touch-control.After pulling switch, little push-button switch, large wane type switch, monolateral some reset switch, electrician trade again towards full contact switch development.Full contact switch has been broken conventional design, has brought unprecedented technological break-through, is the trend of current switch industry.Full contact switch is all can easily realize break-make power supply by button click optional position, has overturned the use habit of people to the cognition of traditional switch and " monolateral point ".Full contact switch has incorporated pure flat resetting technique in design, presses switch key and is switched on or switched off circuit, and after unclamping, button can automatically return to initial position, than traditional wane type switch more succinctly, more generous, fashion more.But the current sensitive accurate problem of not yet well resolving full contact push switch by the design of structure, this is purpose of the present invention's innovation just.
Summary of the invention
For the problems referred to above, the present invention aims to provide the full contact switch of the sensitive stable plane of a kind of touch-control, and it can easily be pressed, the keying of control switch.
For realizing this technical purpose, the solution of the present invention is: the full contact switch of a kind of plane, includes: a switch base has a switch piece that can carry out switch keying with being promoted; One pressing piece, has a plurality of support portions and a press surface, and these a plurality of support portions are incorporated into this switch base in separable mode, and this press surface is pressed for user, when user forms a press points during to this press surface application of force; In the time that described press points is positioned at this press surface central authorities, described a plurality of support portions all can depart from this switch base, make described pressing piece promote this switch piece to carry out the switching of switch keying; In the time that described press points departs from this press surface central, still be combined with this switch base at least one support portion at described press points opposite side, and form a fulcrum, other support portion departs from this switch base, and described switch piece forms lever between this fulcrum and this press points, make described pressing piece promote this switch piece to carry out the switching of switch keying.
As further improvement, described pressing piece includes a pressing plate and a pilot unit, described pressing plate has described press surface and described a plurality of support portion, and described pilot unit is between described pressing plate and described switch piece, and described pilot unit promotes described switch piece.
As further improvement, described pilot unit includes a substrate, a guide plate and a pushing and pressing part; Substrate has an opening, and guide plate is located in the opening of this substrate, pushing and pressing part connecting guide plate; The guide plate plate that is pressed promotes, and makes guide plate along the direction rectilinear movement towards described switch piece, and pushing and pressing part promotes described switch piece carries out the switching of switch keying.
As further improvement, described guide plate has a plurality of leads, and the axial system of these leads is parallel to the direction that this guide plate moves.
As further improvement, on the side face of described guide plate, there are a plurality of guiding ribs, this guiding rib is that the direction moving along guide plate extends to form, and the inwall of opening of substrate described in the outer end butt of guiding rib.
As further improvement, the central authorities of described pressing plate inner side are provided with a projection, and this projection promotes described guide plate.
Preferably, described switch base includes a shell and a pedestal, and this pedestal is positioned at this shell, and described a plurality of support portion is a plurality of hooks, is buckled in described pedestal in separable mode.
Preferably, described switch base includes a shell and a support, and this shell is incorporated on this support, and described a plurality of support portion is a plurality of hooks, is buckled in described support in separable mode.
As further improving, described switch base includes a shell and a switch element, this switch element is positioned at this shell, and this switch element has a contact and a back-moving spring, in the time that described pressing piece is pressed, described contact is described switch piece driving pressed home spring, make back-moving spring by compression and accumulation elastic force, in the time that described pressing piece is not pressed, the spring return of back-moving spring, contact is pushed against back to original position, described switch element is carried out to the switching of opening with closing once.
As further improving, the two ends of described back-moving spring are connected to respectively described contact and described shell.
The invention has the beneficial effects as follows, by the improvement to structure, allow user press from arbitrary position in pressing piece outside the keying that all can control the full contact switch of this plane, significantly improved touch-control sensitivity and the stability of full contact switch, further strengthened the practicality of full contact switch; The delicate structure of whole switch is stable, great commercial value.
Brief description of the drawings
Fig. 1 is the stereogram of the present invention's the first preferred embodiment;
Fig. 2 is another stereogram of the present invention's the first preferred embodiment;
Fig. 3 is the part exploded view of the present invention's the first preferred embodiment;
Fig. 4 is another part exploded view of the present invention's the first preferred embodiment;
Fig. 5 is the generalized section of the present invention's the first preferred embodiment;
Fig. 6 is that the pressing plate of the present invention's the first preferred embodiment is by center press schematic diagram;
Fig. 7 is the switch piece schematic diagram of the switch unit of the present invention's the first preferred embodiment;
Fig. 8 is that the switch element of the present invention's the first preferred embodiment has switched schematic diagram;
Fig. 9 is that the pressing plate of the present invention's the first preferred embodiment tilts to press schematic diagram;
Figure 10 is the part exploded view of the present invention's the second preferred embodiment;
Figure 11 is that the pressing plate of the present invention's the second preferred embodiment tilts to press schematic diagram;
Figure 12 discloses switch element increases back-moving spring schematic diagram.
[primary clustering symbol description]
The full contact switch of 1 plane
10 switch base 12 supports; 122 perforation; 124 installing holes; 14 housings; 141 openings; 16 shells; 18 switch elements; 20 contacts; 222 contact end faces; 224 contact points; 24 the first terminals; 242 conducting strip 26 second terminals; 262 conducting strips; 28 the 3rd terminals; 282 conducting strips; 30 switch units; 32 pedestals; 322 joint portions; 324 openings; 326 pilot holes; 328 joint portions; 34 switch pieces; 342 front end 342a attachment-receiving members; 342b back shaft piece; 344 rear ends; 344a clicking section; 36 swing spring; 38 pressing pieces; 40 pressing plates; 402 press surfaces; 42 first hooks; 44 second hooks; 46 projections; 48 pilot units; 50 substrates; 502 openings; 52 guide plates; 522 guiding ribs; 524 openings; 526 leads; 528 in conjunction with hook; 54 guiding back-moving springs; 56 shell fragments; 562 perforation; 58 pushing and pressing parts; 582 heads; 582a pushes against face; 584 body portions; 584a combined hole 60 is in conjunction with pin;
The full contact switch of 2 plane
62 pressing plates; 622 press surfaces; 64 second hooks; 66 projections; 68 back-moving springs.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Fig. 1 to Fig. 9 is the full contact switch 1 of the plane of the present invention's the first preferred embodiment, includes a switch base 10 and a pressing piece 38.Wherein:
As can be seen from Figure 1, 2, 3, this switch base 10 includes a support 12, a shell 16, a switch element 18 and a switching single 30.Wherein, the outer rim of this support 12 is provided with a plurality of perforation 122, can imbed on box for fixing the power supply of this support 12 on wall.Have an installing hole 124 in the central authorities of this support 12, this shell 16 is incorporated into this support 12 and is located in this installing hole 124.The outside of this support 12 is provided with a housing 14, and the centre of this housing 14 has an opening 141.
In conjunction with Fig. 4, this switch element 18 is located in this shell 16, has three binding posts, a contact 20, and this three binding post is respectively a first terminal 24, one second terminal 26 and one the 3rd terminal 28.Respectively this binding post has respectively a conducting strip 242,262 and 282.Between the conducting strip 262,282 of this second terminal 26 and the 3rd terminal 28, there is a segment distance.In the present embodiment, this contact 20 is a copper sheet, there are a contact end face 222 and two contact points 224, this contact 20 is connected on the conducting strip 242 of this first terminal 24 with its contact end face 222, makes this two contact point 224 between the conducting strip 262,282 of this second terminal 26 and the 3rd terminal 28.
This switch unit 30 includes a pedestal 32 and a switch piece 34.Wherein:
This pedestal 32 is incorporated into this shell 16, and is positioned at the outside of this switch element 18.Four corners of this pedestal 32 have respectively a joint portion 322.These pedestal 32 central authorities are provided with an opening 324, and the top of this opening 324 and below are respectively equipped with a joint portion 328.There are four pilot holes 326 in the outside of this pedestal 32.
This switch piece 34 has a front end 342 and a rear end 344, and this front end 342 is extruded with two attachment-receiving member 342a, and this front end 342 separately has two back shaft piece 342b, lays respectively at end face and the bottom surface of these front end 342 central authorities.As shown in Figure 4,5, this rear end 344 is extruded with two clicking section 344a, between the 344a of this two clicking section, has certain distance, between the 344a of this two clicking section, is provided with a swing spring 36.This switch piece 34 sees through this two back shafts piece 342b and is hubbed on this pedestal 32, makes its front end 342 be arranged in this opening 324, and 344 of the rear ends of this switch piece 34 protrude from this opening 324.The contact 20 of this switch element 18, between two clicking section 344a of this switch piece 34, sees through this swing spring 36 and interconnects.Because two ends of this swing spring 36 push against respectively this contact 20 and this switch piece 34, this contact 20 is tilted towards different directions respectively with this switch piece 34, by this, the contact point 224 on this contact 20 can firmly contact the conducting strip 262,282 of this second terminal 26 or the 3rd terminal 28.
This pressing piece 38 includes a pressing plate 40 and a pilot unit 48.Wherein:
This pressing plate 40 is arranged in the opening 141 of this housing 14, and the outside of this pressing plate 40 has a press surface 402, presses the full contact switch 1 of this plane for user, and user forms a press points during to press surface 402 application of force of this pressing plate 40.The inner side of this pressing plate 40 is provided with four support portions as an example of the first hook 42 example, four the second hooks 44 and a projection 46.These first hooks 42 with separable mode hook in these support 12 inner sides, and be positioned at four corners of this installing hole 124, make this pressing plate 40 protrude from the installing hole 124 of this support 12, and this press surface 402 is arranged in the opening of this housing 14, and flushes with the outside of this housing 14.These second hooks 44 fasten with the joint portion 322 in these 32 4 corners of pedestal respectively.This projection 46 is positioned at the centre of these pressing plate 40 inner sides
This pilot unit 48, between this shell 16 and this pressing plate 40, includes a substrate 50, a guide plate 52, a shell fragment 56 and a pushing and pressing part 58.This substrate 50 is located at the outside of this pedestal 32, and this substrate 50 has an opening 502, and this guide plate 52 is located in the opening 502 of this substrate 50.On the side face of this guide plate 52, there are a plurality of guiding ribs 522, these guiding ribs 522 are to extend to form toward the direction of inner side along the outside of this guide plate 52, and these guiding are held wall within the opening 502 of this substrate 50 of butt outside ribs 522, use the gap between side face and this substrate 50 that reduces this guide plate 52, and these guiding ribs 522 are little with the contact area of this substrate 50, the frictional force of this guide plate 52 when mobile and between this substrate 50 will effectively be reduced.
In addition, corner, four of the inner sides of this guide plate 52 is extended with respectively four leads 526, and the axial system of this four lead 526 is towards the direction of this switch element 18, and 526 of these leads are positioned at four pilot holes 326 of the pedestal 32 of this switch unit 30.Respectively this lead 526 is all arranged with a guiding back-moving spring 54, to support this guide plate 52.The central authorities of these guide plate 52 inner sides have an opening 524.These guide plate 52 inside fronts and below be respectively equipped with one in conjunction with hook 528, these are buckled in the joint portion 328 of the pedestal 32 of this switch unit 30 in conjunction with hook 528.This shell fragment 56 is between this guide plate 52 and this pushing and pressing part 58, has a perforation 562.This pushing and pressing part 58 has a head 582 and the whole body portion 584, this head 582 has two pushing and pressing face 582a, this body portion 584 has a combined hole 584a, the body portion 584 of this pushing and pressing part 58 is sequentially through the perforation 562 of this shell fragment 56 and the opening 524 of this guide plate 52, see through one in conjunction with pin 60 through this combined hole 584a and with these guide plate 52 combinations, and be positioned at opening 524 places of this guide plate 52.This pushing and pressing part 58 is this combined hole 584a to be fulcrum beat.
Refer to Fig. 6, in the time that user depresses this pressing plate 40 by press surface 402 central authorities of this pressing plate 40 (this press points is positioned at this and presses 402 central authorities), these first hooks 42 separate with this support 12, the projection 46 of this pressing plate 40 gives this guide plate 52 by the central application of force, make the direction rectilinear movement of this guide plate 52 toward this switch unit 30, make a wherein pushing and pressing face 582a of this pushing and pressing part 58 touch a wherein attachment-receiving member 342a of this switch piece 34.In the time that this guide plate 52 continues to move toward the direction of this switch unit 30, this pushing and pressing face 582a is subject to this attachment-receiving member 342a extruding, makes this pushing and pressing part 58 taking its combined hole 584a as fulcrum beat, and 56, this shell fragment is squeezed and strain.Continue and consult Fig. 7, this pushing and pressing face 582a promotes this attachment-receiving member 342a, and this switch piece 34 is tilted taking this back shaft piece 342b as fulcrum toward other direction, and this contact 20 is allocated to other direction by the clicking section 344a of this switch piece 34 simultaneously.Refer to Fig. 8, user decontrols after pressing plate 40, and this contact 20 is subject to this swing spring 36 and pushes against and fix.52 of this guide plates are these guiding back-moving spring 54 pushed home, simultaneously by these pressing plate 40 pushed home.This pushing and pressing part 58 is pushed back middle position by shell fragment 56 elastic returnings of this pilot unit 48.By this, when this pressing plate 40 is pressed at every turn, the switching of this switch element 18 being opened or being closed.
Refer to Fig. 9, when user presses 402 while around pressing (this presses 402 central authorities to this press points partially) by this pressing plate 40, press 402 right side as example to press this, the right side of this pressing plate 40 is pressed into toward in, the first hook 42 that is positioned at these pressing plate 40 left sides forms fulcrum because catching on this support 12, and this pressing plate 40 promotes this guide plate 52 equally centered by this projection 46.Because the bearing of trend of guiding rib 522 of this guide plate 52 and the axial system of lead 526 are parallel to the moving direction of this guide plate 52, therefore can allow this guide plate 52 move toward the direction of this switch unit 30 point-blank, add the position that this substrate 50 limits these guide plate 52 beats, more make this guide plate 52 can not produce inclination.By this, this pushing and pressing part 58 can promote this switch piece 34 point-blank, the switching of this switch element 18 being opened or being closed in identical aforementioned mode.
In above-mentioned, see through a plurality of first hooks 42 of these pressing plate 40 inner sides as support portion, even if this press points departs from the central authorities of this press surface 402, while causing this pressing plate 40 to tilt, at least one the first hook 42 at this press points opposite side does not depart from this support 12, still forms a fulcrum with these support 12 combinations, and other first hook 42 departs from these supports 12, and the switch piece 34 of this switch unit 30 is between this fulcrum and this press points, and formation lever.By this, the projection 46 of this pressing plate 40 can promote this guide plate 52 smoothly, and then promotes the switch piece 34 of this switch unit 30, with the switching that this switch element 18 is opened or closed.It will be further appreciated that, the guiding rib 522 on these guide plate 52 side faces has more the effect of stablizing this guide plate 52, and this guide plate 52 can not be tilted when mobile, makes the effect of switching better.In other words, no matter user is pressed by any point on this press surface 402, all controllable switch.In addition,, because this pressing plate 40 flushes with the lateral surface of this housing 14, therefore, allow envoy user more easily operate the full contact switch 1 of this plane.
Below provide again other can reach the specific embodiment of identical above-mentioned effect, Figure 10 to Figure 11 is the full contact switch 2 of the plane of the present invention's the second preferred embodiment, it has majority and is same as the structure of the first preferred embodiment, different is, the width of pressing plate 62 left and right of the present embodiment is less, and do not have the first hook 42 of the first embodiment, therefore the full contact switch 2 of this plane is taking a plurality of the second hooks 64 as support portion.Similarly, when user around presses from the press surface 622 of this pressing plate 62, and while causing this pressing plate 62 to tilt, at least one the second hook 64 at this press points opposite side does not depart from this pedestal 32, still form a fulcrum with these pedestal 32 combinations, other second hook 64 departs from these pedestals 32, and this pressing plate 62 promotes this guide plate 52 in the mode of lever, and then promote the switch piece 34 of this switch unit 30, the switching that this switch element 18 is opened or closed.For example, refer to Figure 11, while being pressed by press surface 622 tops of this pressing plate 62, the second hook 64 that is positioned at pressing plate 62 tops departs from the joint portion 322 of this pedestal 32, and the second hook 64 of pressing plate 62 belows does not depart from this joint portion 322 and formation fulcrum, make the projection 66 of this pressing plate 40 promote this guide plate 52, with the switching that this switch element 18 is opened or closed.
In the present embodiment, because pressing plate 62 width are less, therefore, two or three full contact switchs 2 of plane just can be set on same support 12 according to user demand.
In addition, the on-off mode of the various embodiments described above system presses this pressing plate at every turn and carries out switch at 40,62 o'clock and close or by the switching that closes to unlatching by being opened into.In order to allow the full contact switch of plane have effect of push switch, the switch element 18 of the various embodiments described above one of more can include as shown in figure 12 back-moving spring 68, and the two ends of this back-moving spring 68 are this contact 20 and this shell 16 of butt respectively.
In the time that this pressing plate 40,62 is pressed, this contact 20 drives the conducting strip 282 that contacts the 3rd terminal 28 for this switch piece 34, this the first terminal 24 is somebody's turn to do and the 3rd terminal 28 conductings, and now this back-moving spring 68 is compressed and accumulation elastic force by this contact 20; In the time that this pressing plate 40,62 is not pressed, the spring return of this back-moving spring 68, pushes against back original position by this contact 20 and contacts with the conducting strip 262 of this second terminal 26, and this first terminal 24 is somebody's turn to do and these the second terminal 26 conductings.By this, often press once this pressing plate 40,62, can carry out the switching of opening with closing once to this switch element 18, the switch of this type can be applicable to the purposes (for example electric bell) that need to once open and close.
The above; it is only preferred embodiment of the present invention; not in order to limit the present invention, any trickle amendment that every foundation technical spirit of the present invention is done above embodiment, be equal to and replace and improve, within all should being included in the protection range of technical solution of the present invention.
Claims (10)
1. the full contact switch of plane, includes:
One switch base has a switch piece that can carry out switch keying with being promoted;
One pressing piece, has a plurality of support portions and a press surface, and these a plurality of support portions are incorporated into this switch base in separable mode, and this press surface is pressed for user, when user forms a press points during to this press surface application of force; In the time that described press points is positioned at this press surface central authorities, described a plurality of support portions all can depart from this switch base, make described pressing piece promote this switch piece to carry out the switching of switch keying; In the time that described press points departs from this press surface central, still be combined with this switch base at least one support portion at described press points opposite side, and form a fulcrum, other support portion departs from this switch base, and described switch piece forms lever between this fulcrum and this press points, make described pressing piece promote this switch piece to carry out the switching of switch keying.
2. the full contact switch of plane according to claim 1, it is characterized in that, described pressing piece includes a pressing plate and a pilot unit, described pressing plate has described press surface and described a plurality of support portion, described pilot unit is between described pressing plate and described switch piece, and described pilot unit promotes described switch piece.
3. the full contact switch of plane according to claim 2, is characterized in that, described pilot unit includes a substrate, a guide plate and a pushing and pressing part; Substrate has an opening, and guide plate is located in the opening of this substrate, pushing and pressing part connecting guide plate; The guide plate plate that is pressed promotes, and makes guide plate along the direction rectilinear movement towards described switch piece, and pushing and pressing part promotes described switch piece carries out the switching of switch keying.
4. the full contact switch of plane according to claim 3, is characterized in that, described guide plate has a plurality of leads, and the axial system of these leads is parallel to the direction that this guide plate moves.
5. the full contact switch of plane according to claim 3, it is characterized in that, on the side face of described guide plate, have a plurality of guiding ribs, this guiding rib is that the direction moving along guide plate extends to form, and the inwall of opening of substrate described in the outer end butt of guiding rib.
6. the full contact switch of plane according to claim 3, is characterized in that, the central authorities of described pressing plate inner side are provided with a projection, and this projection promotes described guide plate.
7. according to the full contact switch of the plane described in any one in claim 1 to 6, it is characterized in that, described switch base includes a shell and a pedestal, and this pedestal is positioned at this shell, and described a plurality of support portion is a plurality of hooks, is buckled in described pedestal in separable mode.
8. according to the full contact switch of the plane described in any one in claim 1 to 6, it is characterized in that, described switch base includes a shell and a support, and this shell is incorporated on this support, and described a plurality of support portion is a plurality of hooks, is buckled in described support in separable mode.
9. the full contact switch of plane according to claim 1, it is characterized in that, described switch base includes a shell and a switch element, this switch element is positioned at this shell, and this switch element has a contact and a back-moving spring, in the time that described pressing piece is pressed, described contact is described switch piece driving pressed home spring, make back-moving spring by compression and accumulation elastic force, in the time that described pressing piece is not pressed, the spring return of back-moving spring, pushes against back original position by contact, described switch element is carried out to the switching of opening with closing once.
10. the full contact switch of plane according to claim 9, is characterized in that, the two ends of described back-moving spring are connected to respectively described contact and described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210595527.4A CN103887100A (en) | 2012-12-20 | 2012-12-20 | Plane full contact switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210595527.4A CN103887100A (en) | 2012-12-20 | 2012-12-20 | Plane full contact switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103887100A true CN103887100A (en) | 2014-06-25 |
Family
ID=50955945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210595527.4A Pending CN103887100A (en) | 2012-12-20 | 2012-12-20 | Plane full contact switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103887100A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213840A (en) * | 1997-10-06 | 1999-04-14 | 阿尔卑斯电气株式会社 | Press switch device |
| CN201066641Y (en) * | 2007-06-08 | 2008-05-28 | 张建挺 | A combined switch |
| CN101783258A (en) * | 2010-02-11 | 2010-07-21 | 惠州爱帝威电工科技有限公司 | Reset switch |
| CN201758088U (en) * | 2010-08-31 | 2011-03-09 | 范丽英 | Flat-contact type mechanical switch |
| CN202977249U (en) * | 2012-12-20 | 2013-06-05 | 杨国基 | Plane full-contact switch |
-
2012
- 2012-12-20 CN CN201210595527.4A patent/CN103887100A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213840A (en) * | 1997-10-06 | 1999-04-14 | 阿尔卑斯电气株式会社 | Press switch device |
| CN201066641Y (en) * | 2007-06-08 | 2008-05-28 | 张建挺 | A combined switch |
| CN101783258A (en) * | 2010-02-11 | 2010-07-21 | 惠州爱帝威电工科技有限公司 | Reset switch |
| CN201758088U (en) * | 2010-08-31 | 2011-03-09 | 范丽英 | Flat-contact type mechanical switch |
| CN202977249U (en) * | 2012-12-20 | 2013-06-05 | 杨国基 | Plane full-contact switch |
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Application publication date: 20140625 |