CN101320644B - Movable contact element and switch using the same - Google Patents
Movable contact element and switch using the same Download PDFInfo
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- CN101320644B CN101320644B CN2008101000319A CN200810100031A CN101320644B CN 101320644 B CN101320644 B CN 101320644B CN 2008101000319 A CN2008101000319 A CN 2008101000319A CN 200810100031 A CN200810100031 A CN 200810100031A CN 101320644 B CN101320644 B CN 101320644B
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Abstract
A movable contact element includes a cover sheet to which a movable contact having a dome shape is bonded and which is stacked on a top surface of a pressure sensitive conductive sheet. The movable contact element is bonded to a top surface of a substrate having a fixed contact formed thereon, thereby forming a switch. Through the construction, it is possible to obtain the movable contact element, which has a simple construction and can perform various operations, and the switch using the same.
Description
Technical field
The present invention relates to the movable contact unit in a kind of operation that is mainly used in various e-machines and use the switch of this movable contact unit.
Background technology
In recent years, the multifunction and the variation of mobile phone or car two navigation system various e-machines such as (car navigation system) develop.Be accompanied by the evolution of e-machine,, require at a low price and can carry out multiple apparatus operating the movable contact unit or the switch of the operation that is used for these e-machines.
Adopt Figure 15, the switch of this existing movable contact unit and this movable contact unit of use is described.
Figure 15 is the cutaway view of existing switch 150.In Figure 15, switch 150 has movable contact unit 104, substrate 105 and fixed contact 106.Movable contact unit 104 has cover plate 101 and travelling contact 102.Cover plate 101 has flexible, and has the shape of film like.Travelling contact 102 has the shape of general dome (dome) shape, is made by the conducting metal thin plate.Below cover plate 101, paste a plurality of travelling contacts 102 by binding agent 103, form movable contact unit 104.
In addition, stickup cover plate 101 on substrate 105, the periphery of travelling contact 102 is positioned on the contact 106B.Meanwhile, the following central portion of travelling contact 102 and contact 106A separate predetermined gap and configuration opposed to each other.By like this, constituted switch 150.
The switch 150 of Gou Chenging is installed in the operating portion of e-machine (not shown) by the way, above switch 150, can move up and down or can joltily dispose operating body (not shown).Meanwhile, a plurality of fixed contacts 106 are connected to the electronic circuit (not shown) of e-machine by wiring pattern.
In above structure, operating body is carried out pressing operation or shakes operation.By like this, push below the operated operating body cover plate 101 above.When being pressed above the cover plate 101, cover plate 101 bendings.Meanwhile, the central portion of the general dome shape of travelling contact 102 is pressed.As if the pressing force that applies regulation to travelling contact 102, then travelling contact 102 is followed and is clicked (click) sense and elasticity counter-rotating downwards, and the following central portion of travelling contact 102 touches contact 106A.By like this, contact 106A is electrically connected by travelling contact 102 with contact 106B.
In addition, if releasing to the pressing force of operating body, then utilizes the elastic restoring force of travelling contact 102, travelling contact 102 is elastic restoration upward, and the following central portion of travelling contact 102 leaves contact 106A.By like this, cut off being electrically connected between contact 106A and the contact 106B.
The electronic circuit of e-machine detects the electric break-make of a plurality of fixed contacts 106.For example, in the display frame (not shown) of liquid crystal display cells of e-machine etc., show under the state of a plurality of menus, when up direction has been carried out operation to operating body, in the display frame shown cursor or pointer etc. up direction move predetermined distance.
In addition, when operating body was operated toward right, electronic circuit detected the electric break-make that is positioned near the fixed contact 106 of operated operating body.By like this, shown cursor or pointer etc. move predetermined distance toward right in the display frame.
That is to say,, make the travelling contact 102 elasticity counter-rotating of operating body below, carry out the electric break-make of fixed contact 106 by operating body being carried out pressing operation or shaking operation.Meanwhile, the electronic circuit of e-machine detects the electric break-make of the fixed contact 106 that has carried out which place.By like this,, carry out the function action or the switching of e-machine according to the operation of operating body.
It should be noted that aforesaid existing switch 150 for example is disclosed in the Japan Patent 2003-123596 number open communique etc.
Yet, in the switch 150 of existing movable contact unit 104 and this movable contact unit of use,, need a lot of travelling contacts 102 and fixed contact 106 in order to carry out multiple operation.In addition, also require to have the operating body of complicated shape.Therefore, the portion's product number of packages that constitutes switch 150 increases, and the structure of switch 150 becomes complicated.There is the high problem of cost of movable contact unit 102 and switch 150 in its result.
Summary of the invention
The invention provides a kind of easy structure and can carry out the movable contact unit of multiple operation and the switch of this movable contact unit of use.
Movable contact unit of the present invention possesses and has dome-type shape travelling contact, cover plate and pressure-sensitive conductive plate; Be pasted with travelling contact below cover plate, overlapping on the pressure-sensitive conductive plate have a cover plate, and described pressure-sensitive conductive plate has: low resistance body layer; With high resistance body layer, its resistance value is than described low resistance body floor height.By this structure, the movable contact unit that can obtain easy structure and can carry out multiple operation.
In addition, switch of the present invention has substrate, movable contact unit and fixed contact, movable contact unit possesses travelling contact with dome-type shape, is pasted with the cover plate of travelling contact and be laminated with the pressure-sensitive conductive plate of cover plate in the above below, fixed contact above it with pressure-sensitive conductive plate following be formed on opposed to each other substrate above, described pressure-sensitive conductive plate has: low resistance body layer; With high resistance body layer, its resistance value is than described low resistance body floor height.By this structure, the switch that can obtain easy structure and can carry out multiple operation.
Description of drawings
Fig. 1 is the cutaway view of 1 switch according to the embodiment of the present invention.
Fig. 2 is the exploded perspective view of switch shown in Figure 1.
Fig. 3 A is the stereogram of switch shown in Figure 1.
Fig. 3 B is the stereogram of switch shown in Figure 1.
Fig. 4 is the cutaway view of the pressure-sensitive conductive plate that adopted in the switch shown in Figure 1.
Cutaway view when Fig. 5 is the pressing operation of switch shown in Figure 1.
Fig. 6 is the performance plot of switch shown in Figure 1.
Fig. 7 A is the plane graph of display frame that is equipped with the e-machine of switch shown in Figure 1.
Fig. 7 B is the plane graph of display frame of another way that is equipped with the e-machine of switch shown in Figure 1.
Fig. 8 A is the plane graph of the fixed contact that adopted in the switch shown in Figure 1.
Fig. 8 B is the plane graph of the fixed contact of the another way that adopted in the switch shown in Figure 1.
Fig. 9 is the cutaway view of 2 switch according to the embodiment of the present invention.
Figure 10 is the plane graph of the fixed contact that adopted in the switch shown in Figure 9.
Figure 11 is the performance plot of switch shown in Figure 9.
Figure 12 is the cutaway view of the switch of 2 another way according to the embodiment of the present invention.
Figure 13 is the plane graph of the fixed contact of the another way that adopted in 2 the switch according to the embodiment of the present invention.
Figure 14 A is the cutaway view of the switch of other another way of 2 according to the embodiment of the present invention.
Figure 14 B is the plane graph of the fixed contact that adopted in the switch shown in Figure 14 A.
Figure 15 is the cutaway view of existing switch.
Embodiment
Below, adopt Fig. 1～Figure 14, embodiments of the present invention are described.
(execution mode 1)
Below, adopt Fig. 1～Fig. 8, embodiments of the present invention 1 are described.
Fig. 1 is the cutaway view of 1 switch 50 according to the embodiment of the present invention.Fig. 2 is the exploded perspective view of switch 50.Fig. 3 A and Fig. 3 B are the stereograms of switch 50.Fig. 4 is the cutaway view of the pressure-sensitive conductive plate 15 that adopted in the switch 50 (below be called plate (sheet) 15).Cutaway view when Fig. 5 is the pressing operation of switch 50.Fig. 6 is the performance plot of switch 50.Fig. 7 A is the plane graph of the display frame 30 of the e-machine (not shown) that is equipped with switch 50.Fig. 7 B is the plane graph of display frame 30 of another way that is equipped with the e-machine of switch 50.Fig. 8 A is the plane graph of the fixed contact 19 that adopted in the switch 50.Fig. 8 B is the plane graph of the fixed contact 19 of the another way that adopted in the switch 50.
As depicted in figs. 1 and 2, switch 50 has movable contact unit 17, substrate 18 and fixed contact 19.Movable contact unit 17 has cover plate 11, travelling contact 12 and plate 15.Cover plate 11 is formed by PETG (polyethylene terephthalate) or Merlon (polycarbonate), polyimides (polyimide) etc., and it has the shape of flexible film like.Travelling contact 12 has dome-type substantially shape, and its conducting metal thin plate by copper alloy or steel etc. is made.It should be noted that, by the binding agent (not shown) of acrylic acid (acrylic) or silicon (silicone) etc., travelling contact 12 be secured at cover plate 11 below.In addition, cover plate 11 has the characteristic of electrical insulating property.
In addition, owing on plate 15, be pasted with a plurality of cover plates 11, thus mounting has a plurality of travelling contacts 12 above conductive layer 14.Part below part that is not provided with conductive layer 14 below plate 15 and the conductive layer 14 is formed with insulating barrier 16.It should be noted that, adopt the material of epoxy (epoxy) or polyester (polyester) etc. to form insulating barrier 16.In addition, insulating barrier 16 also can constitute the part of plate 15.
In addition, substrate 18 is to have the substrate of shape of film like or the substrate with tabular shape.It should be noted that, when substrate 18 has the shape of film like, for example, adopt the material of PETG or Merlon etc.In addition, when substrate 18 has tabular shape, for example, adopt the material of paper phenol (paper phenol) or expoxy glass (glass epoxy) etc.In addition, substrate 18 in the above and below, be formed with a plurality of wiring patterns (not shown) of Copper Foil etc.
Fixed contact 19 has the 1st fixed contact 19A (below be called contact 19A) and the 2nd fixed contact 19B (below be called contact 19B) shown in Fig. 8 A. Contact 19A, 19B have the shape of semi-circular shape separately substantially. Contact 19A, 19B adopt carbon Huo person Silver, Copper Foil etc., be formed on substrate 18 above.In addition, contact 19A and contact 19B be separated by about 0.2mm predetermined gap L1 and be provided with, and become a pair of.
Mounting has movable contact unit 17 on substrate 18.Conductive layer 14 and contact 19A, the 19B space L2 about 10～100 μ m of being separated by, and opposed.It should be noted that space L2 also can form by the thickness of insulating barrier 16, at this moment, can control easily and accurately the size of space L2.
Be installed in the operating portion (not shown) of e-machine as the switch 50 that constitutes with upper type.In addition, as shown in Figure 2,, be formed with a plurality of contact 19A, 19B at the central portion of substrate 18 and 5 places up and down.Be formed with movable contact unit 17 accordingly with contact 19A, 19B.It should be noted that, wait the function that realizes, also can be formed on the operating portion side of the e-machine that is equipped with switch 50 by rubber slab 20 or button 21, operating body 22, housing 23.In addition, contact 19A is connected to electronic circuit (not shown) etc. by wiring pattern and the 1st resistive element 24 (below be called resistance 24).In addition, contact 19B is connected to power supply (not shown) etc. by wiring pattern.By like this, constitute input unit.It should be noted that, adopt microcomputer etc., formed electronic circuit.
In above structure, as shown in Figure 3A, if button 21 is carried out pressing operation toward the below, then as shown in Figure 5, rubber slab 20 is toward the below bending.Because rubber slab 20 bendings, thereby the following press section 20A that is positioned at button 21 pushes travelling contact 12 by cover plate 11.If apply the pressing force of regulation to travelling contact 12, then travelling contact 12 is followed click feeling and toward the below strain, is made plate 15 toward the below bendings.Because plate 15 is toward the below bending, thereby the following conductive layer 14 of plate 15 touches contact 19A and contact 19B.By like this, contact 19A is electrically connected by conductive layer 14 with contact 19B.It should be noted that, as shown in Figure 5, the deformed movement that the action of the strain of travelling contact 12 can follow the top, top of dome-type travelling contact 12 to reverse on opposite direction.
Below conductive layer 14, be formed with high resistance body layer 14B with trickle concavo-convex surface configuration.Therefore, further increase, then pressing force high resistance body layer 14B distortion because of being applied if impose on the pressing force of button 21.Thereby the contact area between conductive layer 14 and contact 19A, the 19B increases.Therefore, the contact resistance value between contact 19A and the contact 19B diminishes, and the output voltage to electronic circuit output that has passed through resistance 24 changes.
For the stroke of pushing (stroke) that imposes on button 21, operational load P and come relation between the output voltage V of self-resistance 24 changes as shown in Figure 6.That is, if with the stroke of regulation, button 21 is carried out pressing operation, then travelling contact 12 elasticity counter-rotating.By like this, operational load is changed to P2 by P1.After operational load was changed to P2 by P1, conductive layer 14 touched contact 19A, 19B immediately.Because conductive layer 14 touches contact 19A, 19B, thereby output voltage.At this moment, the threshold voltage V1 that the voltage about the DC3V that is applied between contact 19A and the contact 19B, electronic circuit detect electric break-make is set at 0.2～0.3V.By like this, producing just over during the output voltage V 2 of threshold voltage V1, electronic circuit detects and is electrically connected that is detects the situation that switch 50 is called on-state between contact 19A and the contact 19B.
It should be noted that if the space L2 between conductive layer 14 and contact 19A, the 19B is excessive, then the operational load P2 when travelling contact 12 elasticity are reversed increases to the stroke of the output voltage V 2 that detects electrical connection.Its result feels operation sense slowly sometimes.Therefore, space L2 is preferably about 10～100 μ m.In addition, space L2 more preferably is set at about 20～40 μ m.
In addition, if pushing of button 21 increased the weight of, then operational load P increases once more.Meanwhile, contact 19A reduces with the resistance value that is connected between the contact 19B.By like this, output voltage V increases with curve-like.By the way, easily detect the variation that is connected resistance value between contact 19A and the contact 19B by electronic circuit.
In addition, if elimination to the pressing force of button 21, is then passed through the elastic restoring force of travelling contact 12, travelling contact 12 elastic restorations are to the top.Equally, plate 15 also turns back to original state by elastic restoring force.Therefore, conductive layer 14 leaves contact 19A, 19B, to cut off being electrically connected between contact 19A and the contact 19B.
It should be noted that when output voltage V was smaller or equal to threshold voltage V1, the TURP that electronic circuit detects between contact 19A and the contact 19B broke, is the situation that switch 50 disconnects.
In addition, shown in Fig. 3 B, when to operating body 22 toward upper and lowers to or left and right directions when having carried out shaking operation, same, the travelling contact 12 of up and down or left and right is followed click feel and the elasticity counter-rotating.By like this, the plate 15 corresponding with the position of travelling contact 12 after the elasticity counter-rotating is toward the below bendings.Because plate 15 is toward the below bending, thereby conductive layer 14 touches contact 19A, 19B.In addition, remove to the past upper and lower of operating body 22 to or left and right directions shake operation, conductive layer 14 leaves contact 19A, 19B thus.By like this, carry out between contact 19A and the contact 19B be electrically connected or TURP breaks, be the connection disconnection of switch 50.
Pressing operation by aforesaid button 21 or operating body 22 shake operation, electronic circuit detects the electric break-make between a plurality of contact 19A and the contact 19B or is connected the variation of resistance value.For example, shown in Fig. 7 A, under the state that shows a plurality of menus that are used to select music in the display frame 30 of e-machine, if to operating body 22 up direction carried out shaking operation, then electronic circuit detects the contact 19A at the position corresponding with the operating body 22 that carried out shaking operation and the electric break-make between the contact 19B.By like this, in the display frame 30 shown cursor 31 up direction only move one.It should be noted that display frame 30 is waited by liquid crystal display cells and constitutes.
In addition, the pressing force when utilizing has to a certain degree carried out under the situation of pressing operation constantly to operating body 22, and contact 19A changes with the resistance value that is connected between the contact 19B.That is electronic circuit detects the output voltage V by resistance 24 outputs, and up direction continues moving cursor 31.It should be noted that when owing to bigger intensity operating body 22 is carried out pressing operation, thereby be connected resistance change when bigger between contact 19A and the contact 19B, the translational speed of cursor 31 can be accelerated.
Perhaps, shown in Fig. 7 B, under the state of the menu that shows map in the display frame 30, if to operating body 22 up direction carried out shaking operation, the then operation by only once, pointer 32 up direction only moves a quantity.In addition, when operating body 22 was proceeded pressing operation, pointer 32 up direction continued to move.In addition, if with brute force operating body 22 is operated, then the translational speed of pointer 32 can be accelerated.
Like this, cursor 31 or pointer 32 toward upper and lowers to or left and right directions move, be positioned on the menu of wanting to select or under the state on the map, button 21 carried out pressing operation.By like this, electronic circuit detects the situation of button 21 having been carried out pressing operation, determines to select.It should be noted that,, for example, on the picture of the enlarged map of picture that shows a plurality of song title or the position on the selected map etc., switch display frame 30 by this operation.
That is the pressing operation that shakes operation or button 21 of attended operation body 22 detects the so electric break-make that connects or disconnects between a plurality of contact 19A and the contact 19B.In addition, afterwards owing to proceed to shake operation or pressing operation, so contact 19A changes with the resistance value that is connected between the contact 19B, and electronic circuit detects the variation of connection resistance value.By like this, according to the electric break-make between contact 19A and the contact 19B or be connected the variation of resistance value, can change the amount of movement or the translational speed of cursor 31 or pointer 32.Like this, in the e-machine that carries switch 50, realize multiple machine operation.
Like this, movable contact unit 17 of the present invention, the travelling contact 12 with conducting metal thin plate manufacturing of dome-type shape substantially stick on cover plate 11 below.In addition, cover plate 11 stick on plate 15 above, constituted movable contact unit 17 thus.In addition, movable contact unit 17 stick on the substrate 18 that is formed with respectively opposed contact 19A and contact 19B above, constituted switch 50 thus.By like this, follow the electric break-make of the click thoughts and feelings of pressing operation generation.Meanwhile, also can easily detect behind the pressing operation because of continuing to push the variation that is connected resistance value between the contact 19A that produces and the contact 19B.Therefore, the movable contact unit 17 and the switch 50 that uses this movable contact unit that can obtain easy structure and can carry out multiple operation.
In addition, conductive layer 14 separates the space L2 of regulation with contact 19A, 19B and disposes opposed to each other.By like this, guarantee the insulation between conductive layer 14 and contact 19A, the 19B reliably.Meanwhile, space L2 is set to about 10～100 μ m, preferably be set to about 20～40 μ m, has realized the good click thoughts and feelings of travelling contact 12 thus and has not had the electric break-make that departs from.
In addition, electronic circuit adopts the threshold voltage V1 of regulation, detects the electric break-make between contact 19A and the contact 19B.By like this, detect electric break-make and subsequent resistance change as switch 50 error freely.Its result, the operation of carrying the e-machine of movable contact unit 17 or switch 50 reliably.
It should be noted that, shown in Fig. 8 B, also can be the structure with the 1st fixed contact 19C (below be called contact 19C) and the 2nd fixed contact 19D (below be called contact 19D) at formed fixed contact 19 above the substrate 18.Contact 19C and contact 19D have by predetermined gap L1, the shape of the alternately opposed broach shape of each contact.Because contact 19C, 19D have the shape of broach shape separately, even thereby between the central portion and gap L 1 of conductive layer 14, produced under the situation about departing from some centers, also can stably detect the variation that is connected resistance value between contact 19C and the contact 19C.
In addition, in the above description, illustrated each travelling contact 12 stick on separately cover plate 11 below, and cover plate 11 sticks on the top structure of plate 15.Yet, even below a big cover plate 11, be pasted with a plurality of travelling contacts 12, and cover plate 11 sticks on the movable contact unit 17 of the top structure of plate 15, also can obtain same effect and effect.
In addition, be illustrated as the structure of following combination switch, promptly a plurality of travelling contacts 12 of mounting on plate 15 utilize 22 pairs of travelling contacts of button 21 or operating body 12 to carry out pressing operation or shake operation.Yet for example, independent push-button switch (push switch) or can shake on left and right directions in the seesaw switch various forms of switches such as (seesaw switch) of operation also can obtain same effect and effect.
In addition, in the above description, stacked low resistance body layer 14A and high resistance body layer 14B below base plate 13 have been described, have been formed with the structure of the plate 15 of conductive layer 14.Yet, also can be to have adopted the pressure-sensitive conductive layer 14 of the conducting particles that in base materials such as silicon rubber, has disperseed carbon etc. or the structure of pressure-sensitive conductive plate 15.
(execution mode 2)
Adopt accompanying drawing below, embodiments of the present invention 2 are described.It should be noted that,, mark same symbol, omit detailed explanation the structure same with the structure of execution mode 1.
Fig. 9 is the cutaway view of 2 switch 50A according to the embodiment of the present invention.Figure 10 is the plane graph of the fixed contact 29 that adopted among the switch 50A.Figure 11 is the performance plot of switch 50A.
As Fig. 9 and shown in Figure 10, among the switch 50A, below cover plate 11, be pasted with travelling contact 12.In addition, among the switch 50A, cover plate 11 stick on pressure-sensitive conductive plate 15 above.These structure has the structure same with the structure of execution mode 1.In addition, among the movable contact unit 17A and switch 50A according to execution mode 2, the periphery of pressure-sensitive conductive layer 14 is formed on the position more following than insulating barrier 16.By like this, the periphery that has constituted conductive layer 14 expose below movable contact unit 17A.
In addition, on substrate 18, as shown in figure 10, be formed with and have substantially the periphery fixed contact 29A of the shape of ring-type (below be called contact 29A).In addition, be formed with in the inboard of contact 29A the shape that has semi-circular shape substantially, a pair of the 1st central fixed contact 29B (below be called contact 29B) and the 2nd central fixed contact 29C (below be called contact 29C).In addition, contact 29B and contact 29C separate predetermined gap L1 and are provided with.It should be noted that, constituted fixed contact 29 by contact 29A, contact 29B and contact 29C.
Mounting has movable contact unit 17A on substrate 18.Movable contact unit 17A has cover plate 11, travelling contact 12 and plate 15.In addition, be configured in the central portion and contact 29B, the 29C configuration opposed to each other of the following conductive layer 14 of plate 15 by the space L2 of regulation.It should be noted that the following peripheral part of conductive layer 14 is positioned in contact 29A, touches contact 29A.By like this, be in the state that is electrically connected all the time between conductive layer 14 and the contact 29A.
The switch 50A of Gou Chenging is installed in the operating portion of e-machine like this.Contact 29B by the 1st resistive element 24, is connected to the electronic circuit of e-machine from wiring pattern.Equally, contact 29C is connected to the electronic circuit of e-machine by the 2nd resistive element 24A (below be called resistance 24A).In addition, contact 29A is connected to power supply.By like this, constituted input unit.It should be noted that resistance 24A has the resistance value bigger than resistance 24.
In the above structure, if operating body 22 is shaken operation or button 21 is carried out pressing operation, then rubber slab 20 is toward the below bending.Rubber slab 20 bendings, the press section 20A that is positioned at operated position thus pushes travelling contact 12 by cover plate 11.If the pressing force that travelling contact 12 is stipulated, then travelling contact 12 follows click feel toward the below strain, makes plate 15 toward the below bending.Plate 15 is toward the below bendings, thus conductive layer 14 below touch contact 29B, 29C.By like this, contact 29B and contact 29C are electrically connected by conductive layer 14.In addition, power supply provides source current to contact 29A.Thereby by conductive layer 14, contact 29A, contact 29B, contact 29C are electrically connected separately.It should be noted that the action of the strain of travelling contact 12 is the top, top of dome-type travelling contact 12 deformed movements toward the opposite direction counter-rotating.
Thereafter, if operating body 22 or button 21 are further applied pressing force, then same with the structure of execution mode 1, contact area between conductive layer 14 and contact 29B, the 29C increases, between conductive layer 14 and the contact 29B and conductive layer 14 reduce with the resistance value that is connected between the contact 29C.By like this, same with the structure of execution mode 1 as shown in figure 11, from the resistance 24 of contact 29B side output voltage V to electronic circuit curve of output shape.To this, from contact 29C side, output voltage V 0 changes with the linearity of approximate vertical.That is as having carried out from the electrical connection of the switch 50A that is disconnected to connection, output voltage V 0 outputs to electronic circuit.This is because the resistance 24A that is connected contact 29C has the resistance value bigger than resistance 24.
In present embodiment 2,,, correctly detect the electric break-make of switch 50A also by output voltage V 0 from contact 29C side even without threshold voltage V1 is set especially.That is, adopt output voltage V 0, correctly detect travelling contact 12 just carried out elasticity counter-rotating and operational load just after P1 is changed to P2 or before, electricity switches on and off the electric break-make of such switch 50A.In addition, even in threshold voltage V1, exist under the situation of deviation to a certain degree, also correctly detect the electric break-make of switch 50A.
That is, be used to output voltage V 0 from contact 29C side, detect travelling contact 12 and just carried out after the elasticity counter-rotating or electric break-make before.In addition, electronic circuit adopts the output voltage V of contact 29B side, detects the operation after the detection of carrying out electric break-make and the variation that is connected resistance value between the contact 29B that produces and the contact 29C.
It should be noted that electronic circuit detects shaking the electric break-make between contact 29A that operation produces, a plurality of and contact 29B, the 29C or being connected the variation of resistance value of the pressing operation of this button 21 or operating body 22.That is, for example, shown in Fig. 7 A and Fig. 7 B, can change the amount of movement or the translational speed of cursor 31 or pointer 32.By like this, can carry out the operation of multiple e-machine.
Thereby, according to present embodiment 2, in the central portion of conductive layer 14, contact 29B and contact 29C be separated by the regulation space L1 and opposed to each other the configuration.In addition, the periphery of conductive layer 14 is connected contact 29A.By like this, except the effect identical, can also detect after the travelling contact 12 firm elasticity counter-rotatings more reliably or the electric break-make of switch 50A before with the situation of execution mode 1.
In addition, above the periphery of the conductive layer 14 that contacts with contact 29A, mounting has the periphery of travelling contact 12.Thereby, when carrying out aforesaid pressing operation or shaking operation, because of the following peripheral part of the periphery conductive layer 14 of travelling contact 12 be crimped on contact 29A above.By like this, carry out the reliable electrical connection of switch 50A.
In addition, as shown in figure 12, also can be that low resistance body layer 14A extends to form the periphery below to travelling contact 12, high resistance body layer 14B only is formed on the structure of the central portion of conductive layer 14.By the conductive layer 14 that adopts this structure, being connected between conductive layer 14 and the contact 29A, obstructed too high resistive element layer 14B, and realize by low resistance body layer 14A all the time.Therefore, being connected between conductive layer 14 and the contact 29A represented stable connection resistance value.That is for example, when pressing operation, the periphery of travelling contact 12 is pushed the periphery of low resistance body layer 14A.Yet, even pressing force increases, being connected resistance value and also can changing hardly between low resistance body layer 14A and the contact 29A.By like this, can prevent that conductive layer 14 from bringing influence with the variation that is connected resistance value between the contact 29A to output voltage V.Therefore, only can detect high resistance body layer 14B and contact 29B, the 29C variation that is connected resistance value that brought, stable by central portion.
It should be noted that, the top fixed contact 29 that is formed on substrate 18 also can be the structure with the 1st central fixed contact 29D (below be called contact 29D), the 2nd central fixed contact 29E (below be called contact 29E) and periphery fixed contact 29F as shown in figure 13.Contact 29D and contact 29E have by predetermined gap L1, the shape of the alternately opposed broach shape of each contact.Contact 29D, 29E have the formation of broach shape, thereby even producing under the situation about departing from some centers between the central portion of conductive layer 14 and the gap L 1, also stably detect the variation that connects resistance value.
It should be noted that shown in Figure 14 A and Figure 14 B, fixed contact 29 also can be the structure with a central fixed contact 29G (below be called contact 29G) and periphery fixed contact 29A.Contact 29G has the shape of toroidal substantially.Shown in Figure 14 A and Figure 14 B, the contact 29G that is positioned at central portion is the structure that only has a big contact shape.By like this, the contact area between contact 29G and the conductive layer 14 increases.Its result also suppresses the deviation of the variation of the contact resistance between contact 29G and the conductive layer 14, is better mode.Contact 29A have surround contact 29G, the shape of ring-type substantially.It should be noted that switch 50B mounting above fixed contact 29 has the structure of movable contact unit 17A.Even this structure also can be implemented the present invention.In addition, contact 29A also can have surround contact 29G, the shape of horse-hof shape substantially.In addition, same when fixed contact 29 is to have under the situation of structure of contact 29A and contact 29G with execution mode 1, as long as by electronic circuit detection threshold voltage V1.
In addition, in the above description, illustrated each travelling contact 12 stick on separately cover plate 11 below, and cover plate 11 sticks on the top structure of plate 15.Yet, even below a big cover plate 11, be pasted with a plurality of travelling contacts 12, and cover plate 11 sticks on the movable contact unit 17A of the top structure of plate 15, also can obtain same effect and effect.
In addition, a plurality of travelling contacts 12 of mounting on plate 15 have been described, the structure of utilizing 22 pairs of travelling contacts of button 21 or operating body 12 to carry out pressing operation or shake the combination switch of operation.Yet for example, independent push-button switch or can shake on left and right directions in the various switches of seesaw switch etc. of operation also can obtain same effect and effect.
In the above description, stacked low resistance body layer 14A and high resistance body layer 14B below base plate 13 have been described, have formed the structure of the plate 15 of conductive layer 14.Yet, also can be to have adopted the pressure-sensitive conductive layer 14 of the conducting particles that in the base material of silicon rubber etc., has disperseed carbon etc. or the structure of pressure-sensitive conductive plate 15.
Claims (13)
1. movable contact unit possesses:
Travelling contact has dome-type shape;
Cover plate is pasted with described travelling contact below; With
The pressure-sensitive conductive plate, stacked in the above described cover plate,
Described pressure-sensitive conductive plate has:
Low resistance body layer; With
High resistance body layer, its resistance value is than described low resistance body floor height.
2. movable contact unit according to claim 1, wherein,
Described low resistance body layer disperses carbon dust in synthetic resin, the plate resistance value is 0.5k Ω/unit are～30k Ω/unit are.
3. movable contact unit according to claim 1, wherein,
Described high resistance body layer has concavo-convex surface configuration, and the plate resistance value is 50k Ω/unit are～5M Ω/unit are.
4. a switch possesses substrate, movable contact unit and fixed contact;
Described movable contact unit has:
Travelling contact has dome-type shape;
Cover plate is pasted with described travelling contact below; With
The pressure-sensitive conductive plate, stacked in the above described cover plate;
Described fixed contact, above it with described pressure-sensitive conductive plate following be formed on opposed to each other described substrate above,
Described pressure-sensitive conductive plate has:
Low resistance body layer; With
High resistance body layer, its resistance value is than described low resistance body floor height.
5. switch according to claim 4, wherein,
Described low resistance body layer disperses carbon dust in synthetic resin, the plate resistance value is 0.5k Ω/unit are～30k Ω/unit are.
6. switch according to claim 4, wherein,
Described high resistance body layer has concavo-convex surface configuration, and the plate resistance value is 50k Ω/unit are～5M Ω/unit are.
7. switch according to claim 4, wherein,
Described fixed contact has the 1st fixed contact and the 2nd fixed contact;
Described travelling contact carries out strain, and described thus pressure-sensitive conductive plate touches described the 1st fixed contact and described the 2nd fixed contact.
8. switch according to claim 7, wherein,
Described the 1st fixed contact and described the 2nd fixed contact have the shape by the alternately opposed broach shape in gap.
9. switch according to claim 4, wherein,
Described fixed contact has periphery fixed contact, the 1st central fixed contact and the 2nd central fixed contact;
Described travelling contact carries out strain, and described thus pressure-sensitive conductive plate touches the described the 1st central fixed contact and the described the 2nd central fixed contact.
10. switch according to claim 9, wherein,
The described the 1st central fixed contact and the described the 2nd central fixed contact have the shape by the alternately opposed broach shape in gap.
11. switch according to claim 9, wherein,
Described pressure-sensitive conductive plate and described periphery fixed contact are electrically connected all the time.
12. switch according to claim 9 also possesses:
The 1st resistive element is connected to the described the 1st central fixed contact; With
The 2nd resistive element is connected to the described the 2nd central fixed contact and resistance value than described the 1st resistive element height.
13. switch according to claim 4, wherein,
Described fixed contact has periphery fixed contact and a central fixed contact;
Described travelling contact carries out strain, and described thus pressure-sensitive conductive plate touches described central fixed contact.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-147660 | 2007-06-04 | ||
| JP2007147660 | 2007-06-04 | ||
| JP2007147660 | 2007-06-04 | ||
| JP2007289486 | 2007-11-07 | ||
| JP2007-289486 | 2007-11-07 | ||
| JP2007289486A JP5320725B2 (en) | 2007-06-04 | 2007-11-07 | switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101320644A CN101320644A (en) | 2008-12-10 |
| CN101320644B true CN101320644B (en) | 2011-07-20 |
Family
ID=40180632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101000319A Expired - Fee Related CN101320644B (en) | 2007-06-04 | 2008-06-03 | Movable contact element and switch using the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5320725B2 (en) |
| CN (1) | CN101320644B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011014521A (en) * | 2009-06-02 | 2011-01-20 | Panasonic Corp | Pressure sensitive switch and input device using this |
| JP2011023114A (en) * | 2009-07-13 | 2011-02-03 | Shin Etsu Polymer Co Ltd | Pressure-sensitive input device |
| JP2011096488A (en) | 2009-10-29 | 2011-05-12 | Panasonic Corp | Resistance sheet, pressure sensitive switch, and input device employing the same |
| JP5767439B2 (en) * | 2010-02-15 | 2015-08-19 | ホーチキ株式会社 | Disaster prevention device and operation switch device for disaster prevention device |
| JP5691020B2 (en) * | 2011-03-25 | 2015-04-01 | パナソニックＩｐマネジメント株式会社 | Pressure sensitive switch |
| JP5656738B2 (en) * | 2011-05-20 | 2015-01-21 | ホシデン株式会社 | Key switch |
| CN107003746B (en) * | 2014-11-14 | 2020-07-24 | 索尼公司 | Input device, sensor, keyboard, and electronic device |
| JP6652063B2 (en) * | 2014-11-14 | 2020-02-19 | ソニー株式会社 | Input devices, keyboards and electronics |
| JP6456756B2 (en) * | 2015-03-31 | 2019-01-23 | 株式会社フジクラ | switch |
| JP6641919B2 (en) | 2015-11-20 | 2020-02-05 | マックス株式会社 | tool |
| EP3170627B1 (en) | 2015-11-20 | 2020-09-30 | Max Co., Ltd. | Tool |
| KR102423148B1 (en) | 2015-11-26 | 2022-07-21 | 삼성전자주식회사 | Methode for obtaining user input and electronic device thereof |
| JP7111953B2 (en) * | 2018-04-26 | 2022-08-03 | ミツミ電機株式会社 | switch |
| CN112285549A (en) * | 2020-10-23 | 2021-01-29 | 苏州汇亿达光学科技有限公司 | Method for testing mute switch |
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| JPH08273471A (en) * | 1995-04-04 | 1996-10-18 | Matsushita Electric Ind Co Ltd | Pressure sensitive switch |
| JP2002025377A (en) * | 2000-07-06 | 2002-01-25 | Mitsumi Electric Co Ltd | Pressure-sensitive sensor |
| JP4242080B2 (en) * | 2000-11-20 | 2009-03-18 | 株式会社デンソー | Touch panel, display device, and method for manufacturing touch panel |
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| US4034176A (en) * | 1975-06-11 | 1977-07-05 | Magic Dot, Inc. | Membrane switch apparatus |
| CN1148254A (en) * | 1995-06-27 | 1997-04-23 | 松下电器产业株式会社 | Push switch and method of producing push switch |
| CN1460910A (en) * | 2002-05-13 | 2003-12-10 | 阿尔卑斯电气株式会社 | Film type input device and electronic machine with said device |
| CN1906719A (en) * | 2004-06-15 | 2007-01-31 | 日本航空电子工业株式会社 | Dome contact and multistage operating electric switch containing the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101320644A (en) | 2008-12-10 |
| JP5320725B2 (en) | 2013-10-23 |
| JP2009016330A (en) | 2009-01-22 |
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