CN106847591A

CN106847591A - Key switch and the keyboard of the key switch is used

Info

Publication number: CN106847591A
Application number: CN201610821404.6A
Authority: CN
Inventors: 佐藤贵之
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 2015-10-14
Filing date: 2016-09-13
Publication date: 2017-06-13
Anticipated expiration: 2036-09-13
Also published as: TWI616917B; CN106847591B; TW201714194A; JP2017076488A; JP6471076B2

Abstract

Present invention offer is a kind of not to be hindered the motion of tongue piece portion so as to the good key switch of operation feeling and has used the keyboard of the key switch.Key switch (1) possesses：Fixed contact component (21)；With leaf spring member (10), its movable contact member (15) for doubling as being configured to be separate with fixed contact component (21) is used, and with pressing operation can be carried out and with the dome-shaped circular top part (10a) for bloating, and the reversion action of circular top part (10a) can be carried out, the tongue piece portion (10f) that leaf spring member (10) is internally protruded with the near top from circular top part (10a), the region (PR) that is pressed of leaf spring member (10) is the annulus bigger than tongue piece portion (10f) in top view.

Description

Key switch and the keyboard of the key switch is used

Technical field

Carry out making electrical contact with the key switch of separation and use with the reversion action of circular top part the present invention relates to a kind of The keyboard of the key switch.

Background technology

In the switching device that electrical equipment is used, it is desirable to which use can carry out reliable switch motion and with clear and definite Operation feeling key switch.For example, Patent Document 1 discloses a kind of switching device, by pressing moving contact structure Part so that movable contact member is contacted with fixed contact portion and carries out electric switch action, and movable contact member is inverted Act and produce operation feeling.

Figure 35 is the schematic sectional view of the structure of the switching device 100 for representing patent document 1.Figure 36 is to represent moving contact The schematic diagram of the general profile of component 101.Figure 37 is a top view for variation for representing movable contact member 101.As schemed Shown in 35, switching device 100 has：Movable contact member 101, it has elasticity and electric conductivity；Substrate 102, it possesses energy Enough fixed contact portions 103 electrically connected with movable contact member 101；Driving body 104, its pressing movable contact member 101；Keep Piece 105, it keeps on substrate 102 movable contact member 101；And The lid component 106.

Movable contact member 101 is made up of the metallic plate with elasticity and electric conductivity, as shown in figure 36, is had：Bloat The circular top part 101a of formation, the foot 101b located at the outer edge of circular top part 101a and support dome portion 101a and being capable of root The contact site 101c of movement according to operation.Contact site 101c configurations when the direction bloated from circular top part 101a carries out top view The middle position of 101d in opening portion, and by be capable of deflection deformation linking part 101e and circular top part 101a link and to circle The inner side (Z2 directions) of top 101a is prominent.In the operating portion 104b of pressing driving body 104 downwards, fixed keeping first In the state of conducting between contact portion 103a and the second fixed contact portion 103b, circular top part 101a is further scratched downwards Song, and linking part 101e also bends downwards, circular top part 101a reversions.Pressing operation is being carried out to movable contact member 101 When, the linking part 101e and circular top part 101a flexures after contact site 101c contacts, so that circular top part 101a is inverted, therefore Cope with overtravel.

As shown in figure 37, the movable contact member 101 of switching device 100 can also be following component, i.e. linking part 101e is configured with an arm 101f around contact site 101c, and arm 101f linearly extends and formed.

Citation

Patent document 1：Japanese Unexamined Patent Publication 2014-220130 publications

However, possessing tongue-shaped arm 101f's (tongue piece portion) at the top of circular top part 101a when utilizing shown in Figure 37 Movable contact member 101 is constituted during key switch, in order to keep movable contact member 101, is configured in upper surface protect sometimes Hold piece (sheet element).In this case, when possessing the movable contact member of tongue piece portion across sheet element pressure, sheet element meeting Contacted with tongue piece portion, even if contact site is non-bonding part, it is also possible to hinder the motion of tongue piece portion.Accordingly, there exist obstruction tongue The motion in piece portion is so as to the problem of good operation feeling cannot be obtained.

The content of the invention

The present invention is used to solve above-mentioned problem, its object is to provide a kind of motion for not hindering tongue piece portion so as to operate The good key switch of sense of touch and the keyboard of the key switch is used.

Scheme for solving problem

Key switch of the invention possesses：Fixed contact component；Movable contact member, it is configured to and the fixation Contact member separate；And leaf spring member, it has can carry out pressing operation and with circle to the movable contact member The circular top part that dome-shaped is bloated, and the reversion action of the circular top part can be carried out, the leaf spring member has from the circular top part The tongue piece portion that internally protrudes of near top, the key switch is characterised by, the leaf spring member is pressed region It is the annulus bigger than the tongue piece portion in top view.

According to the structure, the annulus bigger than tongue piece portion is set to by the way that region will be pressed, so as to leaf spring member When carrying out pressing operation and bending tongue piece portion, the motion of tongue piece portion will not be hindered, in addition, the reverse turn of circular top part will not be hindered Make.Therefore, operation feeling is good.

In addition, key switch of the invention is characterised by, the key switch possesses to described in the leaf spring member The sheet element that circular top part is kept, the sheet element is when position corresponding with the tongue piece portion has top view than described The big opening portion of tongue piece portion, and with the sticking part of the ring-type towards the opening portion, a part for the circular top part and institute State sticking part contact.

According to the structure, leaf spring member fits in sheet element and is reliably maintained.Also, set by sheet element Opening portion, so as to carry out pressing operation to leaf spring member and when bending tongue piece portion, sheet element will not be contacted with tongue piece portion, no The motion of tongue piece portion can be hindered.

In addition, the key switch of the invention preferably circular top part is set to larger dome-shaped, the dome of radius of curvature The height of the original state in portion is less than the 1.2% of the radius of curvature of the circular top part.

According to the structure, less than 1.2% of radius of curvature by the way that the height of circular top part to be set to circular top part, so that tongue piece Turn into the curved surface close to plane around portion.Thereby, it is possible to by the sticking part and dome of the ring-type towards opening portion of sheet element The area of portion's contact sets larger such that it is able to reliably keep leaf spring member.Tongue piece portion is not hindered thereby, it is possible to provide Motion and the reliably key switch of holding leaf spring member.

In addition, in key switch of the invention, the curvature of the circular top part of the preferred original state of leaf spring member Radius is substantially 30mm, and the height of the circular top part is substantially 0.14mm.

According to the structure, substantially 30mm is set to by by the radius of curvature of circular top part, height is set to substantially 0.14mm, energy Clear and definite operation feeling is accessed, and can reliably keep bottom leaf spring member.

In addition, in key switch of the invention, the sheet element preferably has the shape bloated around the opening portion Shape, and it is provided with multiple narrow than circular top part region in the outer part from the neighbouring direction of the sticking part in top view Seam.

According to the structure, by setting slit, the sheet element that elongation around opening portion is the shape for bloating can be reduced Tension force.Thus, even if operational ton is set to larger, it is also possible to obtain good operation feeling.

In addition, in key switch of the invention, the leaf spring member preferably have in top view from the circle Multiple foots that the peripheral part of the periphery connection at top is protruded laterally, the foot has：Deflection division, it can be based on to institute State the pressing operation of circular top part and carry out elastic deformation；And bending part, it is in the front end of the deflection division to the circular top part Top side is protruded.

According to the structure, when pressing operation is carried out, foot is also bent, and bending part, energy are set by the front end of deflection division It is enough it is swimmingly bent when foot bends such that it is able to obtain more preferable operation feeling.

In addition, key switch of the invention is characterised by, the leaf spring member is used as the movable contact member, The front of the tongue piece portion separate with fixed contact portion material.

According to the structure, key switch can be constituted with less component count.

In addition, the above-mentioned key switch preferably tongue piece portion has to the fixed contact component side in the front Prominent protuberance.

According to the structure, by setting protuberance so that tongue piece portion contact with fixed contact component stabilization.

In addition, the above-mentioned key switch preferably protuberance is hemispherical.

According to the structure, by being set to hemispherical by protuberance so that making contact more stable.

In addition, key switch of the invention can also be configured to, the movable contact member possesses by synthetic resin structure Into first piece portion and the moving contact portion that is made up of electric-conductor, the fixed contact component possesses what is be made up of synthetic resin Second portion and the fixed contact portion being made up of electric-conductor, the moving contact portion is opposite to the fixed contact portion and configuration exists Top, the leaf spring member configuration is in the top of the movable contact member, and configuration makes the front of the tongue piece portion The position in the moving contact portion is pressed to fixed contact portion side across the first piece portion.

According to the structure, the switching member that will can be made up of movable contact member and fixed contact component and by leaf spring structure The click spring that part is constituted is arranged to different parts and constitutes key switch.

In addition, in above-mentioned key switch, the tongue piece portion preferably has to the moving contact in the front The protuberance that component side protrudes.

According to the structure, by setting protuberance so that pressing of the tongue piece portion to movable contact member is stable.

In addition, in above-mentioned key switch, preferably described protuberance is hemispherical.

According to the structure, by the way that protuberance to be set to hemispherical so that pressing is more stable.

In addition, key switch of the invention is characterised by, possess for carrying out pressing operation to the leaf spring member Pressing member, the pressing member has and the press section for being pressed the corresponding ring-type in region.

According to the structure, pressing operation is carried out by the pressing member of the press section with ring-type, therefore will not be to tongue Piece portion applies unnecessary power, stable operation.

In addition, layout arrangement of the multiple operated keys of keyboard of the invention to specify, the keyboard is characterised by possessing many Individual above-mentioned key switch, the key switch is respectively correspondingly configured with the multiple operated key.

According to the structure, bent by tongue piece portion operational ton can be set to it is larger, so even being that keyboard also can Obtain good operation feeling.

Invention effect

According to the present invention, the annulus bigger than tongue piece portion is set to by the way that region will be pressed, so as to leaf spring member When carrying out pressing operation and bending tongue piece portion, the motion of tongue piece portion will not be hindered, in addition, the reverse turn of circular top part will not be hindered Make.Therefore, it is possible to provide the motion for not hindering tongue piece portion and the key switch that good operation feeling can be obtained.

According to the present invention, possess multiple above-mentioned key switches, be respectively correspondingly configured with button with multiple operated keys and open Close.Therefore, by tongue piece portion bend operational ton can be set to it is larger, therefore, it is possible to provide can obtain good operation touch The keyboard of sense.

Brief description of the drawings

Fig. 1 is the exploded perspective view of the key switch of the first embodiment of the invention observed from oblique upper.

Fig. 2 is the exploded perspective view of the key switch of the first embodiment observed from obliquely downward.

Fig. 3 is the stereogram of the key switch for representing first embodiment.

Fig. 4 is the top view of the key switch for representing first embodiment.

Fig. 5 is the front view of the key switch for representing first embodiment.

Fig. 6 is the top view for representing leaf spring member.

Fig. 7 is the upward view for representing leaf spring member.

Fig. 8 is the front view for representing leaf spring member.

Fig. 9 is the sectional view after being cut off along the IX-IX lines of Fig. 4.

Figure 10 is to represent the sectional view with the pressing operation state in Fig. 9 identical sections.

Figure 11 is the exploded perspective view of the key switch of the second embodiment of the present invention observed from oblique upper.

Figure 12 is the exploded perspective view of the key switch of the second embodiment observed from obliquely downward.

Figure 13 is the stereogram of the key switch for representing second embodiment.

Figure 14 is the top view of the key switch for representing second embodiment.

Figure 15 is the sectional view after being cut off along the XV-XV lines of Figure 14.

Figure 16 is to represent the sectional view with the pressing operation state in Figure 15 identical sections.

Figure 17 is the exploded perspective view of the key switch of the third embodiment of the present invention observed from oblique upper.

Figure 18 is the exploded perspective view of the key switch of the 3rd implementation method observed from obliquely downward.

Figure 19 is the stereogram of the key switch for representing the 3rd implementation method.

Figure 20 is the top view of the key switch for representing the 3rd implementation method.

Figure 21 is the front view of the key switch for representing the 3rd implementation method.

Figure 22 is the top view for representing leaf spring member.

Figure 23 is the upward view for representing leaf spring member.

Figure 24 is the front view for representing leaf spring member.

Figure 25 is the sectional view after being cut off along the XXV-XXV lines of Figure 20.

Figure 26 is to represent the sectional view with the pressing operation state in Figure 25 identical sections.

Figure 27 is the exploded perspective view of the key switch of the 4th implementation method of the invention observed from oblique upper.

Figure 28 is the exploded perspective view of the key switch of the 4th implementation method observed from obliquely downward.

Figure 29 is the stereogram of the key switch for representing the 4th implementation method.

Figure 30 is the top view of the key switch for representing the 4th implementation method.

Figure 31 is the sectional view after being cut off along the XXXI-XXXI lines of Figure 30.

Figure 32 is to represent the sectional view with the pressing operation state in Figure 31 identical sections.

Figure 33 is the top view of the keyboard for representing the 5th implementation method of the invention.

Figure 34 is the partial sectional view after being cut off along the XXXIV-XXXIV lines of Figure 33.

Figure 35 is the schematic sectional view of the structure of the switching device for representing conventional.

Figure 36 is the schematic diagram of the general profile of the movable contact member for representing conventional.

Figure 37 is the top view of the variation of the movable contact member for representing conventional.

Description of reference numerals

1 key switch

2 key switches

3 key switches

4 key switches

10 leaf spring members

10a circular top parts

10b foots

10f tongue piece portions

10i deflection divisions

10j bending parts

10k peripheral parts

11 first convex portions

15 movable contact members

16 first piece portions

17 moving contact portions

21 fixed contact components

21c first end sub-portions

22 supporting contact members

22d Second terminals portion

26 second portions

27 fixed contact portions

30 base members

31 resettlement sections

31a houses bottom surface

41 sheet elements

41a opening portions

41b bellyings

41c sticking parts

41d slits

42 sheet elements

43 sheet elements

43a opening portions

43b bellyings

43c sticking parts

43d slits

44 sheet elements

44a operating portions

46 pressing members

46a press sections

50 insulating elements

50a hollow parts

60 switching members

61 movable contact members

62 fixed contact components

63 clearance components

70 operated keys

71 pressing members

72 housings

73 circuit boards

90 keyboards

100 switching devices

101 movable contact members

101a circular top parts

101b foots

101c contact sites

101d opening portions

101e linking parts

101f arms

102 substrates

103 fixed contact portions

The first fixed contacts of 103a portion

The second fixed contacts of 103b portion

104 driving bodies

104b operating portions

105 retention tabs

106 The lid components

PR is pressed region

R10a radius of curvature

Specific embodiment

Hereinafter, embodiments of the present invention are described in detail using accompanying drawing.It should be noted that for the ease of reason Solution and suitably change the size of accompanying drawing.

[first embodiment]

Fig. 1 is the exploded perspective view of the key switch 1 of the first embodiment of the invention observed from oblique upper.Fig. 2 It is the exploded perspective view of the key switch 1 observed from obliquely downward.Fig. 3 is the stereogram for representing key switch 1.Fig. 4 is to represent The top view of key switch 1.Fig. 5 is the front view for representing key switch 1.Fig. 6 is the top view for representing leaf spring member 10.Fig. 7 It is the upward view for representing leaf spring member 10.Fig. 8 is the front view for representing leaf spring member 10.

The key switch 1 of first embodiment possesses：The leaf spring member 10 that is used as movable contact member 15, it is equipped Fixed contact component 21 and the supporting base member 30 of contact member 22, insulating element 50 and sheet element 41.Need explanation , in Fig. 1 to Fig. 5, key switch 1 is arranged to the construction of switch of monomer and is shown, but can also be base Body component 30, insulating element 50 and sheet element 41 are connected to the switch of the sheet that can be arranged side-by-side multiple leaf spring members 10 Structure.

Leaf spring member 10 is made up of the metallic plate with elasticity and electric conductivity, as shown in figure 1, the leaf spring member 10 has It is standby：It is outer with the peripheral part 10k, supporting connected with the periphery of the circular top part 10a of the dome-shaped profile for bloating and circular top part 10a The foot 10b of all portion 10k and tongue piece portion 10f internally protruded from the near top of circular top part 10a.

Circular top part 10a is formed in the way of being bloated to the Z1 directions of Fig. 1.When top view is carried out from the direction for bloating, Circular top part 10a is toroidal.Circular top part 10a has can be based on entering to exercise drum from the pressing operation for bloating direction (Z1 directions) The shape (reference picture 8) of the reversion action of outgoing direction reversion.In addition, with when the pressing is released, to bloat direction extensive to original Multiple elasticity.

As shown in Fig. 6 and Fig. 7, the peripheral part that foot 10b is connected in top view from the periphery with circular top part 10a 10k rises and has been protrudedly formed four laterally.Foot 10b has：Deflection division 10i, it bloats direction phase to circular top part 10a Anti- direction (Z2 directions) is stretched out and can be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And bending part 10j, it is prominent to the top side of circular top part 10a in the front end of deflection division 10i.The deflection division 10i of foot 10b possesses can be in base In pressing operation so that circular top part 10a carries out supporting peripheral part 10k when reversion is acted and scratched after the reversion action of circular top part 10a Bent elastic force.

Tongue piece portion 10f is towards with the inside bending of the dome-shaped circular top part 10a for bloating.As shown in Fig. 2 and Fig. 7, in tongue The front of piece portion 10f is provided with the first hemispherical convex portion 11.Leaf spring member 10 is used as movable contact member 15, tongue piece portion First convex portion 11 and the fixed contact component 21 of the front of 10f separate.

As shown in figure 8, leaf spring member 10 possesses the foot 10b of (having height) more long on Z1-Z2 directions.Need explanation , for the ease of understanding the following description, in fig. 8 compared with X1-X2 directions, the size in Z1-Z2 directions is enlargedly shown. The tongue piece portion 10f of the leaf spring member 10 of original state is with the first height of the convex portion 11 in being protruded from peripheral part 10k with foot 10b The mode bending of the roughly equal height and position in position.Circular top part 10a and the peripheral part being connected with the periphery of circular top part 10a 10k is set as the smaller height dimension of the height dimension than foot 10b.And, it is configured to the radius of curvature of circular top part 10a R10a sets larger.

Specifically, the radius of curvature R 10a of the circular top part 10a that leaf spring member 10 is set as under original state be 30mm and Height H10a is 0.14mm.It should be noted that from the manufacture angle of leaf spring member 10, the numerical value slightly floats.As long as It is such size ratio, the height H10a of circular top part 10a will be relatively small, so that as the shape slightly bloated from tabular surface Shape.

Base member 30 is made up of the synthetic resin of insulating materials.Fixed contact component 21 and supporting contact member 22 by Conductive metalwork is constituted, and as shown in Figure 1 and Figure 2, is disposed on base member 30.Fixed contact component 21 has With the toroidal that the mode Chong Die with the center of the circular top part 10a of leaf spring member 10 in top view is configured.In addition, branch Contact member 22 is held to be configured to be abutted with foot 10b.It should be noted that fixed contact component 21 and supporting contact member 22 On be connected with wiring (not shown), but eliminate the explanation to the wiring in this manual.More specifically, base member 30 and fixed contact component 21 can be by the embedded fixed contact component 21 such as being insert-molded with branch with supporting contact member 22 Contact member 22 is held to form, or by being laminated with the printed circuit board structure of fixed contact component 21 and supporting contact member 22 Into.

Insulating element 50 is made up of the synthetic resin of insulating materials, and is formed with and is accordingly set with the size of leaf spring member 10 The hollow part 50a for putting.Insulating element 50 is easily manufactured from the mother metal of sheet by punch press process.

Sheet element 41 is made up of the synthetic resin with flexible insulating materials, and is formed with opening portion 41a in central portion. Sheet element 41 has the bellying 41b in the shape bloated to Z1 directions around the 41a of opening portion, in bellying 41b tools It is standby：Towards the ring-type of opening portion 41a sticking part 41c, top view when from the neighbouring direction of sticking part 41c than circular top part 10a Region in the outer part and multiple slit 41d for setting.By setting slit 41d, can reduce elongation around the 41a of opening portion is The tension force of the sheet element 41 of the shape for bloating.Sheet element 41 is easily manufactured from the mother metal of sheet by laser machining.In addition, Can be processed by using the punch press process of mould.It should be noted that the number of slit 41d, shape are not limited to figure The mode shown, it is also possible to be suitably designed according to purpose as described above.

Sheet element 41 is fitted with insulating element 50 by the adhesive layer (not shown) set on sheet element 41.In addition, every Fitted by adhesive layer (not shown) with base member 30 from component 50.Also, leaf spring member 10 is by the patch of sheet element 41 On conjunction portion 41c set adhesive layer (not shown) and fit.

Sheet element 41 is when position corresponding with the tongue piece portion 10f of leaf spring member 10 has top view than tongue piece portion 10f Big opening portion 41a.And, the sticking part 41c of the ring-type of the sheet element 41 and circular top part 10a's of leaf spring member 10 is pressed area Domain PR is arranged in correspondence with.Specifically, sticking part 41c is set as contact tongue portion 10f and to divide tongue piece portion 10f's The internal diameter of opening.Sheet element 41 is contacted by the adhesive layer (not shown) of sticking part 41c with a part of circular top part 10a, from And leaf spring member 10 is kept by sheet element 41.

Next, the action to the key switch 1 of present embodiment is illustrated.Fig. 9 is cut off along the IX-IX lines of Fig. 4 Sectional view afterwards.Figure 10 is to represent the sectional view with the pressing operation state in Fig. 9 identical sections.It should be noted that with Fig. 8 is same, is illustrated for the ease of understanding, compared with X1-X2 directions, enlargedly shows the size in Z1-Z2 directions.

It is configured with the pressing member 71 (reference picture 1) covered to the opening portion 41a of sheet element 41.Operator is by right Pressing member 71 carries out pressing operation, so as to press sheet element 41 towards Z2 directions.Thus, the original state shown in Fig. 9 is entered Enter the pressing operation state shown in Figure 10.The reversion action of circular top part 10a is carried out in Figure 10.In addition, the deflection division of foot 10b 10i bends after the reversion action of circular top part 10a.Thus, the first convex portion 11 is connected to fixed contact component 21, and tongue piece portion 10f bends after abutting.It should be noted that making various sizes be optimized with elastic force so that the reversion action of circular top part 10a The moment of end is roughly the same with the moment that the first convex portion 11 is connected to fixed contact component 21.The laminating of the ring-type of sheet element 41 Portion 41c bondings (corresponding with region PR is pressed) with a part of the circular top part 10a of leaf spring member 10, therefore along with circular top part The reversion action of 10a and elastic deformation.

Opening portion 41a is formed with sheet element 41, even if therefore tongue piece portion 10f bend, tongue piece portion 10f also will not be with piece Component 41 is contacted.So as to, even if being provided with adhesive layer on sheet element 41, the part bonding of sticking part 41c and circular top part 10a In the case of, will not also hinder the motion of tongue piece portion 10f.Therefore, circular top part 10a can be unobstructed in the motion of tongue piece portion 10f In the case of carry out reversion action, therefore good operation feeling will not be damaged.Also, it is provided with multiple slit 41d, therefore piece structure Part 41 easily stretches when carrying out elastic deformation in the reversion action along with circular top part 10a, it is suppressed that sheet element 41 it is flexible Operation feeling is impacted.Thus, even if the operational ton of pressing operation is set to larger, it is also possible to obtain good operation Sense of touch.

Also, leaf spring member 10 is configured to set larger by the radius of curvature R 10a of the circular top part 10a under original state, Therefore, it is possible to increase the area of sticking part 41c.Thus, acted in the reversion because of circular top part 10a and cause the elastic deformation of sheet element 41 When, the sticking part 41c of sheet element 41 is difficult to be peeled off from circular top part 10a.It should be noted that being not limited to foregoing circular top part The size of 10a, as long as the height H10a of original state reaches the chi of less than the 1.2% of the radius of curvature R 10a of circular top part 10a Very little ratio can play identical effect.

In addition, leaf spring member 10 is provided with the first hemispherical convex portion 11, first convex portion 11 in the front of tongue piece portion 10f Abutted with fixed contact component 21, therefore the contact with fixed contact component 21 stably can be stably conductive.In addition, damaging The possibility of fixed contact component 21 is smaller.

In addition, leaf spring member 10 has bending part 10j in the front end of the deflection division 10i of foot 10b, bending part 10j is to court The direction bending prominent to the top side (Z1 sides) of circular top part 10a.Thus, when the deflection division 10i of foot 10b bends, bending Portion 10j is slided on supporting contact member 22 and it can be made more swimmingly to bend.Accordingly, it is capable to access preferably operation touch Sense.

Hereinafter, the effect brought using present embodiment is illustrated.

The leaf spring member 10 of the key switch 1 of first embodiment has from the near top of circular top part 10a internally dashes forward The tongue piece portion 10f for going out, the key switch 1 is characterised by that the region PR that is pressed of leaf spring member 10 is in top view when ratio Tongue piece portion 10f big annulus.

According to the structure, the annulus bigger than tongue piece portion 10f is set to by the way that region PR will be pressed, so as to leaf spring When component 10 carries out pressing operation and bends tongue piece portion 10f, the motion of tongue piece portion 10f will not be hindered, and circle will not be hindered The reversion action of top 10a.Therefore, operation feeling is good.

In addition, the key switch 1 of present embodiment possesses the sheet element kept to the circular top part 10a of leaf spring member 10 41, the opening portion 41a bigger than tongue piece portion 10f when position corresponding with tongue piece portion 10f has top view of sheet element 41, and A part of sticking part 41c with the ring-type towards opening portion 41a, circular top part 10a are contacted with sticking part 41c.

According to the structure, leaf spring member 10 fits in sheet element 41 and is reliably maintained.Also, by sheet element 41 Upper setting opening portion 41a, so as to pressing operation is carried out to leaf spring member 10 and make tongue piece portion 10f bend when, sheet element 41 is not Can be contacted with tongue piece portion 10f, the motion of tongue piece portion 10f will not be hindered.

In addition, the preferred circular top part 10a of the key switch 1 of present embodiment is set to larger dome-shaped of radius of curvature R 10a, And the height H10a of original state is less than the 1.2% of the radius of curvature R 10a of circular top part 10a.

According to the structure, by the radius of curvature R 10a that the height H10a of circular top part 10a is set to circular top part 10a Less than 1.2%, so as to turn into the curved surface close to plane around tongue piece portion 10f.Thereby, it is possible to by sheet element 41 towards opening The sticking part 41c of the ring-type of portion 41a sets larger with the area that circular top part 10a is contacted such that it is able to reliably keep leaf spring Component 10.The motion that tongue piece portion 10f is not hindered thereby, it is possible to provide and the key switch for reliably keeping leaf spring member 10.

In addition, in the key switch 1 of present embodiment, the song of the circular top part 10a of the preferred original state of leaf spring member 10 Rate radius R10a is substantially 30mm, and height H10a is substantially 0.14mm.

According to the structure, substantially 30mm is set to by by the radius of curvature R 10a of circular top part 10a, height H10a is set to greatly 0.14mm is caused, clear and definite operation feeling can be obtained, and reliably keep bottom leaf spring member 10.

In addition, in the key switch 1 of present embodiment, sheet element 41 preferably has what is bloated around the 41a of opening portion Shape, and it is provided with multiple slits than circular top part 10a regions in the outer part from the neighbouring direction of sticking part 41c in top view 41d。

According to the structure, by setting slit 41d, it is the shape for bloating that can reduce elongation around the 41a of opening portion The tension force of sheet element 41.Thus, even if operational ton is set to larger, it is also possible to obtain good operation feeling.

In addition, in the key switch 1 of present embodiment, leaf spring member 10 have in top view from circular top part Multiple foot 10b that the peripheral part 10k of the periphery connection of 10a is protruded laterally.And, foot 10b preferably has：Deflection division 10i, it can be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And bending part 10j, it is in deflection division 10i Front end it is prominent to the top side of circular top part 10a.

According to the structure, when pressing operation is carried out, foot 10b also bends, and is rolled over by being set in the front end of deflection division 10i Turn of bilge 10j, can be such that it swimmingly bends such that it is able to obtain more preferable operation feeling when foot 10b bends.

In addition, the leaf spring member 10 of the key switch 1 of present embodiment is used as movable contact member 15, tongue piece portion The front of 10f separate with fixed contact component 21.According to the structure, button can be constituted with less component count and be opened Close.

In addition, the preferred tongue piece portion 10f of the key switch 1 of present embodiment has as to fixed contact structure in its front First convex portion 11 of the protuberance that the side of part 21 protrudes.According to the structure, cause tongue piece portion 10f and consolidate by setting the first convex portion 11 The contact stabilization of fixed contact component 21.

In addition, the key switch 1 of present embodiment preferably the first convex portion 11 is in hemispherical.According to the structure, by by One convex portion 11 is set to hemispherical contact can be made more stable.

[second embodiment]

Figure 11 is the exploded perspective view of the key switch 2 of the second embodiment of the present invention observed from oblique upper.Figure 12 is the exploded perspective view of the key switch 2 observed from obliquely downward.Figure 13 is the stereogram for representing key switch 2.Figure 14 is Represent the top view of key switch 2.

The key switch 2 of second embodiment possesses：The leaf spring member 10 that is used as movable contact member 15, it is equipped The base member 30 of fixed contact component 21, sheet element 42 and pressing member 46 integrated with sheet element 42.Need It is bright, for constitute second embodiment key switch 2 component in it is identical with the key switch 1 of first embodiment Component, do not consider shape difference and illustrated with identical reference, and omit in the following description to the component Explanation.

Leaf spring member 10 is the identical shape of leaf spring member 10 in the key switch 1 with first embodiment.Leaf spring structure Multiple foot 10b that the peripheral part 10k being connected from the periphery with circular top part 10a when part 10 has top view is protruded laterally. And, foot 10b has：Deflection division 10i, it can be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And Bending part 10j, it is prominent to the top side of circular top part 10a in the front end of deflection division 10i.In addition, leaf spring member 10 is as movable Contact member 15 is used, and front and the fixed contact component 21 of tongue piece portion 10f separate.In the front end of tongue piece portion 10f Side has first convex portion 11 prominent to the side of fixed contact component 21.

Base member 30 is made up of the synthetic resin of insulating materials, and by the embedded fixed contact component 21 such as being insert-molded And supporting contact member 22 is formed.As shown in figure 11, base member 30 possesses the case for having opening in the Z1 sides of resettlement section 31 The profile of type.Fixed contact component 21 is made up of the metalwork of electric conductivity, as shown in figure 11, in the collecting bottom surface of resettlement section 31 The central portion of 31a exposes.Fixed contact component 21 possesses first end sub-portion 21c, as shown in figs. 11 and 12, first end sub-portion 21c is set with exposing laterally from the side of base member 30.In addition, metalwork structure of the supporting contact member 22 by electric conductivity Into, as shown in figure 11, house bottom surface 31a outer edge expose.Supporting contact member 22 possesses Second terminal portion 22d, such as schemes Shown in 11 and Figure 12, Second terminal portion 22d is set with exposing laterally from the side of base member 30.It should be noted that Base member 30 is formed by the material of insulating materials, therefore is electrically insulated between fixed contact component 21 and supporting contact member 22, Similarly also insulated between first end sub-portion 21c and Second terminal portion 22d.

Sheet element 42 is made up of the synthetic resin with flexible insulating materials, and operating portion 42a is prominent to Z1 directions.Pressing Component 46 is made up of the synthetic resin of insulating materials, as shown in figure 12, is configured in the Z2 sides of sheet element 42.Pressing member 46 is in Z2 Side possesses the press section 46a for being set to annular shape.Sheet element 42 be configured with the position of pressing member 46 be processed into it is recessed to Z1 sides Sunken shape (being in convex form when being observed from operating portion 42a), and the sheet of thin-walled is formed around the 46a of press section and is processed into To the shape that Z1 directions bloat.The peripheral part of sheet element 42 is arranged on base member 30 by coating material, adhesives Outer peripheral portion.It should be noted that can also from around the 46a of press section to the sheet element 42 in the range of peripheral part Jointing material is set on face (face of Z2 sides), and it is bonded with the outer peripheral portion of base member 30.

When the internal diameter of the circular press section 46a of pressing member 46 is set to top view with surround tongue piece portion 10f's The roughly equal diameter of diameter of a circle.The external diameter of press section 46a is set greater than and will divide the circle that the opening of tongue piece portion 10f surrounds Diameter such that it is able to press a part of circular top part 10a.That is, in top view leaf spring member 10, by pressure ratio tongue piece portion 10f big annulus is to be pressed region PR.It should be noted that it is different from the key switch 1 of first embodiment, pressing Do not have sticking part 41c on splenium 46a and sheet element 42.So as to, though when the internal diameter of press section 46a is in top view with In the case that a part of tongue piece portion 10f is overlapped, need not also worry and be bonded and obstruction action with tongue piece portion 10f.In addition, also will not Hinder the reversion action of circular top part 10a.

Next, the action to the key switch 2 of present embodiment is illustrated.Figure 15 is cut along the XV-XV lines of Figure 14 The sectional view having no progeny.Figure 16 is to represent the sectional view with the pressing operation state in Figure 15 identical sections.It should be noted that For convenience of description, compared with X1-X2 directions, the size in Z1-Z2 directions is enlargedly shown.

Operator carries out pressing operation by operating portion 42a, so as to press sheet element 42 towards Z2 directions.Thus, from Original state shown in Figure 15 enters the pressing operation state shown in Figure 16.The reversion action of circular top part 10a is carried out in Figure 16. In addition, the deflection division 10i of foot 10b bends after the reversion action of circular top part 10a.Thus, the first convex portion 11 is connected to fixation Contact member 21, and tongue piece portion 10f bends after abutting.It should be noted that making various sizes be optimized with elastic force so that circle The moment of the end of the reversion action of top 10a is roughly the same with the moment that the first convex portion 11 is connected to fixed contact component 21.

The external diameter of press section 46a is set greater than and will divide the diameter of a circle that the opening of tongue piece portion 10f surrounds, leaf spring member 10 are pressed annulus bigger than tongue piece portion 10f when region PR is top view, therefore, it is possible to reliably press circular top part 10a.In addition, press section 46a and sheet element 42 will not be bonded on tongue piece portion 10f.Therefore, will not hinder tongue piece portion 10f's Motion.Therefore, circular top part 10a can carry out reversion action in the case where the motion of tongue piece portion 10f is unobstructed, therefore will not The good operation feeling of infringement.

Leaf spring member 10 is provided with the first hemispherical convex portion 11 in the front of tongue piece portion 10f, first convex portion 11 with it is solid Fixed contact component 21 is abutted, therefore the stabilization of the contact with fixed contact component 21, so as to conduct stabilization.In addition, damage fixing The possibility of contact member 21 is smaller.

Hereinafter, the effect brought using present embodiment is illustrated.

Leaf spring member 10 has the tongue piece portion 10f internally protruded from the near top of circular top part 10a, the key switch 2 It is characterised by, the region PR that is pressed of leaf spring member 10 is the annulus bigger than tongue piece portion 10f in top view.

According to the structure, the annulus bigger than tongue piece portion 10f is set to by the way that region PR will be pressed, so as to reliably press Pressure circular top part 10a.This is pressed the region that region PR is the circular press section 46a pressings for being not provided with jointing material.Therefore, Pressing operation is carried out to leaf spring member 10 and make tongue piece portion 10f bend when, the motion of tongue piece portion 10f will not be hindered, in addition, not The reversion of circular top part 10a can be hindered to act.Therefore, operation feeling is good.

In addition, in the key switch 2 of present embodiment, leaf spring member 10 preferably have in top view from dome Multiple foot 10b that the peripheral part 10k of the periphery connection of portion 10a is protruded laterally, foot 10b have：Deflection division 10i, its energy It is enough to be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And bending part 10j, its front end of deflection division 10i to The top side of circular top part 10a is protruded.

In addition, the key switch 2 of present embodiment is characterised by, leaf spring member 10 makes as movable contact member 15 With,

The front of tongue piece portion 10f separate with fixed contact component 21.According to the structure, can be with less part Number constitutes key switch.

In addition, the preferred tongue piece portion 10f of the key switch 2 of present embodiment has as to fixed contact structure in its front First convex portion 11 of the protuberance that the side of part 21 protrudes.According to the structure, cause tongue piece portion 10f and consolidate by setting the first convex portion 11 Contact stabilization between fixed contact component 21.

In addition, the key switch 2 of present embodiment preferably the first convex portion 11 is in hemispherical.According to the structure, by by One convex portion 11 is set to hemispherical and makes contact more stable.

In addition, the key switch 2 of present embodiment possesses the pressing member for carrying out pressing operation to leaf spring member 10 46, pressing member 46 has the press section 46a of ring-type corresponding with region PR is pressed.According to the structure, by with ring-type The pressing member 46 of press section 46a carry out pressing operation, therefore will not apply unnecessary power, operation to tongue piece portion 10f Stabilization.

[the 3rd implementation method]

Figure 17 is the exploded perspective view of the key switch 3 of the third embodiment of the present invention observed from oblique upper.Figure 18 is the exploded perspective view of the key switch 3 observed from obliquely downward.Figure 19 is the stereogram for representing key switch 3.Figure 20 is Represent the top view of key switch 3.Figure 21 is the front view for representing key switch 3.Figure 22 is the vertical view for representing leaf spring member 10 Figure.Figure 23 is the upward view for representing leaf spring member 10.Figure 24 is the front view for representing leaf spring member.

The key switch 3 of the 3rd implementation method possesses：Leaf spring member 10, insulating element 50 with circular top part 10a, piece structure Part 43 and switching member 60.Switching member 60 is a kind of diaphragm, and is possessed：Fixed contact component 62, it is configured to and solid Movable contact member 61 and isolate initial shape in the position away from fixed contact component 62 that fixed contact component 62 separate The clearance component 63 of the movable contact member 61 of state.It should be noted that in Figure 17 to Figure 21, key switch 3 is arranged to The construction of switch of monomer and be shown, but can also be insulating element 50, sheet element 43 and switching member 60 be connected Into the construction of switch of the sheet that can be arranged side-by-side multiple leaf spring members 10.

Leaf spring member 10 is made up of the metallic plate with elasticity and electric conductivity, and as shown in figure 17, the leaf spring member 10 has It is standby：It is outer with the peripheral part 10k, supporting connected with the periphery of the circular top part 10a of the dome-shaped profile for bloating and circular top part 10a The foot 10b of all portion 10k and tongue piece portion 10f internally protruded from the near top of circular top part 10a.

Circular top part 10a is formed in the way of being bloated to the Z1 directions of Figure 17.When top view is carried out from the direction for bloating, Circular top part 10a is toroidal.Circular top part 10a has can be based on entering to exercise from the pressing operation for bloating direction (Z1 directions) Bloat the shape (reference picture 24) of the reversion action of direction reversion.In addition, with when the pressing is released to the original side of bloating To the elasticity recovered.

As shown in Figure 22 and Figure 23, the peripheral part that foot 10b is connected in top view from the periphery with circular top part 10a 10k rises and has been protrudedly formed four laterally.Foot 10b has：Deflection division 10i, it bloats direction phase to circular top part 10a Anti- direction (Z2 directions) is stretched out and can be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And bending part 10j, it is prominent to the top side of circular top part 10a in the front end of deflection division 10i.The deflection division 10i of foot 10b possesses can be in base In pressing operation so that circular top part 10a carries out supporting peripheral part 10k while the elastic force for bending when reversion is acted.

Tongue piece portion 10f is towards with the inside bending of the dome-shaped circular top part 10a for bloating.As shown in Figure 18 and Figure 23, The front of tongue piece portion 10f is provided with the first hemispherical convex portion 11.Tongue piece portion 10f is configured to and moving contact structure described later The first piece portion 16 of part 61 abuts.

As shown in figure 24, leaf spring member 10 possesses the foot 10b of (having height) more long on Z1-Z2 directions.Need It is bright, for the ease of understanding the following description, in fig. 24 compared with X1-X2 directions, the chi in Z1-Z2 directions is enlargedly shown It is very little.The tongue piece portion 10f of the leaf spring member 10 of original state is with first convex portion 11 in being protruded from peripheral part 10k with foot 10b The mode bending of the roughly equal height and position of height and position.Circular top part 10a and the periphery being connected with the periphery of circular top part 10a Portion 10k is set as the smaller height dimension of the height dimension than foot 10b.And, it is configured to the radius of curvature of circular top part 10a R10a sets larger.

Sheet element 43 is made up of the synthetic resin with flexible insulating materials, and is formed with opening portion 43a in central portion. Sheet element 43 has the bellying 43b in the shape bloated to Z1 directions around the 41a of opening portion, in bellying 43b tools It is standby：Towards the ring-type of opening portion 41a sticking part 43c and top view when from the neighbouring direction of sticking part 43c than circular top part 10a regions in the outer part and multiple slit 43d for setting.By setting slit 43d, can reduce and be stretched around the 43a of opening portion The tension force of the sheet element 43 of a length of shape for bloating.Sheet element 43 is easily manufactured from the mother metal of sheet by laser machining.Separately Outward, it is also possible to processed by using the punch press process of mould.It should be noted that the number of slit 43d, shape are not limited In the mode of diagram, it is also possible to be suitably designed according to purpose as described above.

Sheet element 43 is fitted with insulating element 50 by the adhesive layer (not shown) set on sheet element 43.In addition, every Fitted by adhesive layer (not shown) with the first piece portion 16 of movable contact member described later 61 from component 50.Also, leaf spring Component 10 is fitted by the adhesive layer (not shown) set on the sticking part 43c of sheet element 43.

Sheet element 43 is when position corresponding with the tongue piece portion 10f of leaf spring member 10 has top view than tongue piece portion 10f Big opening portion 43a.And, the sticking part 43c of the ring-type of the sheet element 43 and circular top part 10a's of leaf spring member 10 is pressed area Domain PR is arranged in correspondence with.Specifically, sticking part 43c is set as contact tongue portion 10f and to divide tongue piece portion 10f's The internal diameter of opening.Sheet element 43 is contacted by the adhesive layer (not shown) of sticking part 43c with a part of circular top part 10a, from And leaf spring member 10 is kept by sheet element 43.

Switching member 60 is a kind of diaphragm, and is possessed：Fixed contact component 62, it is configured to and fixed contact component 62 The movable contact member 61 of contact separation and the moving contact in the position isolation original state away from fixed contact component 62 The clearance component 63 (reference picture 25) of component 61.

Movable contact member 61 possesses：The first piece portion 16 that is made up of the synthetic resin with insulating properties and flexibility, With the moving contact portion 17 being made up of electric-conductor.In addition, fixed contact component 62 possesses：By the synthetic resin with insulating properties Second portion 26 for constituting and the fixed contact portion 27 being made up of electric-conductor.Clearance component 63 synthesizes tree by with insulating properties Fat part is constituted.First piece portion 16 and second portion 26 fit with clearance component 63 by adhesive layer (not shown).It is movable to touch The center of circular top part 10a of the point portion 17 in top view with leaf spring member 10 overlappingly configures.Fixed contact portion 27 with Moving contact portion 17 is opposed, and configuration identical position in top view.It should be noted that moving contact portion 17 and solid Wiring (not shown) is connected with fixed contact portion 27, but eliminates the explanation to the wiring in this manual.Moving contact Component 61 and fixed contact component 62 can be made by being patterned to the synthetic resin for being formed with metallization layer Make.Additionally, it is preferred that set connecting up the guard member protected to (not shown).

Next, the action to the key switch 3 of present embodiment is illustrated.Figure 25 is along the XXV-XXV lines of Figure 20 Sectional view after cut-out.Figure 26 is to represent the sectional view with the pressing operation state in Figure 25 identical sections.Need explanation It is to be illustrated for the ease of understanding, Figure 25 and Figure 26 are same with Figure 24, compared with X1-X2 directions, enlargedly show Z1-Z2 side To size.

As shown in figure 25, the moving contact portion 17 of movable contact member 61 is opposite to the fixed contact of fixed contact component 62 Portion 27 and configuration up.In addition, leaf spring member 10 is configured in the top of movable contact member 61, and configuration makes located at tongue First convex portion 11 of the front of piece portion 10f presses the position in moving contact portion 17 to the side of fixed contact portion 27 across first piece portion 16 Put.It is configured with the pressing member 71 (reference picture 17) covered to the opening portion 43a of cover plate component 43.Operator is by pressing Pressure component 71 carries out pressing operation, so as to press sheet element 43 towards Z2 directions.Thus, the original state shown in Figure 25 enters Pressing operation state shown in Figure 26.The reversion action of circular top part 10a is carried out in Figure 26.In addition, the deflection division of foot 10b 10i carries out being bent while reversion is acted in circular top part 10a.Thus, the first convex portion 11 is connected to first piece portion 16, and can Movable contact component 61 bends after abutting, so that moving contact portion 17 is connected to fixed contact portion 27.It should be noted that making each Plant size to be optimized with elastic force so that moving contact portion 17 is connected to the moment in fixed contact portion 27 and the reversion of circular top part 10a The moment of release is roughly the same.One of the sticking part 43c of the ring-type of the sheet element 43 and circular top part 10a of leaf spring member 10 It is point (corresponding with region PR is pressed) to bond, thus along with circular top part 10a reversion action and elastic deformation.

Opening portion 43a is formed with sheet element 43, even if therefore tongue piece portion 10f bend, tongue piece portion 10f also will not be with piece Component 43 is contacted.So as to, even if being provided with adhesive layer on sheet element 43, the part bonding of sticking part 43c and circular top part 10a In the case of, will not also hinder the motion of tongue piece portion 10f.Therefore, circular top part 10a can be unobstructed in the motion of tongue piece portion 10f In the case of carry out reversion action, therefore good operation feeling will not be damaged.Also, it is provided with multiple slit 43d, therefore piece structure Part 43 easily stretches when carrying out elastic deformation in the reversion action along with circular top part 10a, it is suppressed that sheet element 43 it is flexible Operation feeling is impacted.Thus, even if the operational ton of pressing operation is set to larger, it is also possible to obtain good operation Sense of touch.

Also, leaf spring member 10 is configured to set larger by the radius of curvature R 10a of the circular top part 10a under original state, Therefore, it is possible to increase the area of sticking part 43c.Thus, acted in the reversion because of circular top part 10a and cause the elastic deformation of sheet element 43 When, the sticking part 43c of sheet element 43 is difficult to be peeled off from circular top part 10a.It should be noted that being not limited to foregoing circular top part The size of 10a, as long as the height H10a of original state reaches the chi of less than the 1.2% of the radius of curvature R 10a of circular top part 10a Very little ratio can play identical effect.

In addition, leaf spring member 10 is provided with the first hemispherical convex portion 11 in the front of tongue piece portion 10f, so that this is first convex The possibility that movable contact member 61 (first piece portion 16) is damaged in portion 11 is smaller.Therefore, stabilization is contacted.

In addition, leaf spring member 10 has bending part 10j in the front end of the deflection division 10i of foot 10b, bending part 10j is to court The direction bending prominent to the top side (Z1 sides) of circular top part 10a.Thus, when the deflection division 10i of foot 10b bends, bending Portion 10j is slided in first piece portion 16 and it can be made more swimmingly to bend.Accordingly, it is capable to access more preferable operation feeling.Separately Outward, the resiliency that the deflection division 10i of click feel and foot 10b that leaf spring member 10 has both circular top part 10a is brought.

Hereinafter, the effect brought using present embodiment is illustrated.

The leaf spring member 10 of the key switch 3 of first embodiment has from the near top of circular top part 10a internally dashes forward The tongue piece portion 10f for going out, the key switch 3 is characterised by that the region PR that is pressed of leaf spring member 10 is in top view when ratio Tongue piece portion 10f big annulus.

In addition, the key switch 3 of present embodiment possesses the sheet element kept to the circular top part 10a of leaf spring member 10 43, the opening portion 43a bigger than tongue piece portion 10f when position corresponding with tongue piece portion 10f has top view of sheet element 43, and A part of sticking part 43c with the ring-type towards opening portion 43a, circular top part 10a are contacted with sticking part 43c.

According to the structure, leaf spring member 10 fits in sheet element 43 and is reliably maintained.Also, by sheet element 43 Upper setting opening portion 43a, so as to pressing operation is carried out to leaf spring member 10 and make tongue piece portion 10f bend when, sheet element 43 is not Can be contacted with tongue piece portion 10f, the motion of tongue piece portion 10f will not be hindered.

In addition, the preferred circular top part 10a of the key switch 3 of present embodiment is set to larger dome-shaped of radius of curvature R 10a, And the height H10a of original state is less than the 1.2% of the radius of curvature R 10a of circular top part 10a.

According to the structure, by the radius of curvature R 10a that the height H10a of circular top part 10a is set to circular top part 10a Less than 1.2%, so as to turn into the curved surface close to plane around tongue piece portion 10f.Thereby, it is possible to by sheet element 43 towards opening The sticking part 43c of the ring-type of portion 43a sets larger with the area that circular top part 10a is contacted such that it is able to reliably keep leaf spring Component 10.The motion that tongue piece portion 10f is not hindered thereby, it is possible to provide and the key switch for reliably keeping leaf spring member 10.

In addition, in the key switch 3 of present embodiment, the song of the circular top part 10a of the preferred original state of leaf spring member 10 Rate radius R10a is substantially 30mm, and height H10a is substantially 0.14mm.

In addition, in the key switch 3 of present embodiment, sheet element 43 preferably has what is bloated around the 43a of opening portion Shape, and it is provided with multiple slits than circular top part 10a regions in the outer part from the neighbouring direction of sticking part 43c in top view 43d。

According to the structure, by setting slit 43d, it is the shape for bloating that can reduce elongation around the 43a of opening portion The tension force of sheet element 43.Thus, even if operational ton is set to larger, it is also possible to obtain good operation feeling.

In addition, in the key switch 3 of present embodiment, leaf spring member 10 have in top view from circular top part Multiple foot 10b that the peripheral part 10k of the periphery connection of 10a is protruded laterally.And, foot 10b preferably has：Deflection division 10i, it can be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And bending part 10j, it is in deflection division 10i Front end it is prominent to the top side of circular top part 10a.

In addition, for the key switch 3 of present embodiment, movable contact member 61 possesses what is be made up of synthetic resin First piece portion 16 and the moving contact portion 17 being made up of electric-conductor, fixed contact component 62 possess be made up of synthetic resin Two portions 26 and the fixed contact portion 27 being made up of electric-conductor, moving contact portion 17 is opposite to fixed contact portion 27 and configuration exists Top, leaf spring member 10 is configured in the top of movable contact member 15, and is configured and made the front of tongue piece portion 10f across the A piece of portion 16 presses the position in moving contact portion 17 to the side of fixed contact portion 27.

According to the structure, the switching member 60 that can be made up of movable contact member 61 and fixed contact component 62 and by The click spring that leaf spring member 10 is constituted is arranged to different parts and constitutes key switch.

In addition, in the key switch 3 of present embodiment, tongue piece portion 10f preferably has as to movable in its front First convex portion 11 of the protuberance that the side of contact member 15 protrudes.According to the structure, tongue piece portion is caused by setting the first convex portion 11 Pressing stabilizations of the 10f to movable contact member 15.

In addition, in the key switch 3 of present embodiment, the first convex portion 11 is preferably hemispherical.According to the structure, pass through First convex portion 11 is set to hemispherical so that pressing is more stable.

[the 4th implementation method]

Figure 27 is the exploded perspective view of the key switch 4 of the 4th implementation method of the invention observed from oblique upper.Figure 28 is the exploded perspective view of the key switch 4 observed from obliquely downward.Figure 29 is the stereogram for representing key switch 4.Figure 30 is Represent the top view of key switch 4.

The key switch 4 of the 4th implementation method possesses：Leaf spring member 10, insulating element 50 with circular top part 10a, piece structure Part 43 and switching member 60.It should be noted that for constitute the 4th implementation method key switch 4 component in The identical component of key switch 3 of the 3rd implementation method, shape difference is not considered and is illustrated with identical reference, and The explanation to the component is omitted in the following description.

Leaf spring member 10 be in and the key switch 3 of the 3rd implementation method in the identical shape of leaf spring member 10.Leaf spring structure Multiple foot 10b that the peripheral part 10k being connected from the periphery with circular top part 10a when part 10 has top view is protruded laterally. And, foot 10b has：Deflection division 10i, it can be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And Bending part 10j, it is prominent to the top side of circular top part 10a in the front end of deflection division 10i.In addition, tongue piece portion 10f is towards with dome The inside bending of the circular top part 10a that shape is bloated.As shown in Figure 18 and Figure 23, it is provided with hemispherical in the front of tongue piece portion 10f The first convex portion 11.

Sheet element 44 is made up of the synthetic resin with flexible insulating materials, and operating portion 44a is prominent to Z1 directions.Pressing Component 46 is made up of the synthetic resin of insulating materials, as shown in figure 28, is configured in the Z2 sides of sheet element 44.Pressing member 46 is in Z2 Side possesses the press section 46a for being set to annular shape.Sheet element 44 is processed into the position for being configured with pressing member 46a and is recessed to Z1 sides Shape (when being observed from operating portion 44a be in convex form), and formed around the 46a of press section thin-walled sheet and be processed into The shape that Z1 directions bloat.The peripheral part of sheet element 44 is arranged on the outer of base member 30 by coating material, adhesives Circumferential portion.It should be noted that can also from around the 46a of press section to the face of the sheet element 44 in the range of peripheral part Jointing material is set on (face of Z2 sides), and makes it Nian Jie with the outer peripheral portion of base member 30.

When the internal diameter of the circular press section 46a of pressing member 46 is set to top view with surround tongue piece portion 10f's The roughly equal diameter of diameter of a circle.The external diameter of press section 46a is set greater than and will divide the circle that the opening of tongue piece portion 10f surrounds Diameter such that it is able to press a part of circular top part 10a.That is, in top view leaf spring member 10, by pressure ratio tongue piece portion 10f big annulus is to be pressed region PR.It should be noted that it is different from the key switch 3 of the 3rd implementation method, pressing Do not have sticking part 43c on splenium 46a and sheet element 44.Therefore, though when the internal diameter of press section 46a is in top view with In the case that a part of tongue piece portion 10f is overlapped, need not also worry and be bonded and obstruction action with tongue piece portion 10f.In addition, also will not Hinder the reversion action of circular top part 10a.

Switching member 60 is a kind of diaphragm, and is possessed：Fixed contact component 62, it is configured to and fixed contact component 62 The movable contact member 61 of contact separation and the moving contact in the position isolation original state away from fixed contact component 62 The clearance component 63 (reference picture 31) of component 61.

Next, the action to the key switch 4 of present embodiment is illustrated.Figure 31 is along the XXXI-XXXI of Figure 30 Sectional view after line cut-out.Figure 32 is to represent the sectional view with the pressing operation state in Figure 31 identical sections.Need explanation , illustrated for the ease of understanding, compared with X1-X2 directions, the size in Z1-Z2 directions is enlargedly shown.

As shown in figure 31, the fixed contact portion 27 of the moving contact portion 17 of movable contact member 61 and fixed contact component 62 It is opposed and put up.In addition, leaf spring member 10 is configured in the top of movable contact member 61, and configuration makes located at tongue piece First convex portion 11 of the front of portion 10f presses the position in moving contact portion 17 to the side of fixed contact portion 27 across first piece portion 16 Put.Pressing member 46 (reference picture 27) is configured with sheet element 44.Operator carries out pressing operation by operating portion 44a, So as to press pressing member 46 towards Z2 directions.Thus, the pressing operation shown in Figure 32 is entered from the original state shown in Figure 31 State.The reversion action of circular top part 10a is carried out in Figure 32.In addition, the deflection division 10i of foot 10b is carried out instead in circular top part 10a Rotation as while bent.Thus, the first convex portion 11 is connected to first piece portion 16, and movable contact member 61 is scratched after abutting Song, moving contact portion 17 is connected to fixed contact portion 27.It should be noted that making various sizes be optimized with elastic force so that can Movable contact portion 17 is connected to the moment in fixed contact portion 27 and the moment of the reversion release of circular top part 10a is roughly the same.Piece The sticking part 43c of the ring-type of component 43 is (corresponding with region PR is pressed) with a part of the circular top part 10a of leaf spring member 10 viscous Close, thus along with circular top part 10a reversion action and elastic deformation.

In addition, leaf spring member 10 is provided with the first hemispherical convex portion 11 in the front of tongue piece portion 10f, so that this is first convex The possibility that movable contact member 61 (first piece portion 16) is damaged in portion 11 is smaller.

In addition, leaf spring member 10 has bending part 10j in the front end of the deflection division 10i of foot 10b, bending part 10j is to court The direction bending prominent to the top side (Z1 sides) of circular top part 10a.Thus, when the deflection division 10i of foot 10b bends, bending Portion 10j is slided in first piece portion 16 and it can be made more swimmingly to bend.Accordingly, it is capable to access more preferable operation feeling.

Hereinafter, the effect brought using present embodiment is illustrated.

In addition, in the key switch 4 of present embodiment, leaf spring member 10 preferably have in top view from dome Multiple foot 10b that the peripheral part 10k of the periphery connection of portion 10a is protruded laterally, foot 10b have：Deflection division 10i, its energy It is enough to be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And bending part 10j, its front end of deflection division 10i to The top side of circular top part 10a is protruded.

In addition, in the key switch 4 of present embodiment, leaf spring member 10 have in top view from circular top part Multiple foot 10b that the peripheral part 10k of the periphery connection of 10a is protruded laterally.And, foot 10b preferably has：Deflection division 10i, it can be based on carrying out elastic deformation to the pressing operation of circular top part 10a；And bending part 10j, it is in deflection division 10i Front end it is prominent to the top side of circular top part 10a.

In addition, for the key switch 4 of present embodiment, movable contact member 61 possesses what is be made up of synthetic resin First piece portion 16 and the moving contact portion 17 being made up of electric-conductor, fixed contact component 62 possess be made up of synthetic resin Two portions 26 and the fixed contact portion 27 being made up of electric-conductor, moving contact portion 17 is opposite to fixed contact portion 27 and configuration is upper Side, leaf spring member 10 is configured in the top of movable contact member 15, and configuration makes the front of tongue piece portion 10f across first Piece portion 16 presses the position in moving contact portion 17 to the side of fixed contact portion 27.

In addition, in the key switch 4 of present embodiment, tongue piece portion 10f preferably has as to movable in its front First convex portion 11 of the protuberance that the side of contact member 15 protrudes.According to the structure, by setting the first convex portion 11 so that tongue piece portion Pressing stabilizations of the 10f to movable contact member 15.

In addition, in the key switch 4 of present embodiment, the first convex portion 11 is preferably hemispherical.According to the structure, pass through First convex portion 11 is set to it is hemispherical, so as to press more stable.

In addition, the key switch 4 of present embodiment possesses the pressing member for carrying out pressing operation to leaf spring member 10 46, pressing member 46 has the press section 46a of ring-type corresponding with region PR is pressed.According to the structure, by with ring-type The pressing member 46 of press section 46a carry out pressing operation, therefore will not apply unnecessary power, operation to tongue piece portion 10f Stabilization.

[the 5th implementation method]

Figure 33 is the top view of the keyboard 90 for representing the 5th implementation method of the invention.Figure 34 is along the XXXIV- of Figure 33 Partial sectional view after the cut-out of XXXIV lines.It should be noted that Figure 34 is the signal of the concrete structure for eliminating key switch 1 Figure.

The keyboard 90 of the 5th implementation method has multiple operated keys 70 on housing 72 with the layout arrangement for specifying, each is grasped The pressing operation signal for making key 70 is transmitted to personal computer etc..It should be noted that the operated key of the keyboard 90 shown in Figure 33 Layout is of common layout.

As shown in figure 34, accordingly it is configured with key switch 1 with operated key 70 on keyboard 90.The button of multiple configuration is opened 1 is closed to be electrically connected with same circuit board 73.It should be noted that in the key switch 1 of first embodiment, using being equipped with The base member 30 of fixed contact component 21 and supporting contact member 22, but the key switch 1 of multiple configurations is in wiring base Be connected on plate 73 contact member 21 and supporting contact member 22 and constitute base member 30.In addition, circuit board 73 Mechanical strength is aided in by housing 72.It is connected with the wiring (not shown) of circuit board 73, and the connection of key switch 1 is broken Open state is transmitted as pressing operation signal to personal computer etc..

Key switch 1 is the key switch of explanation in first embodiment, is bent by tongue piece portion 10f and will can operated Amount is set to larger.Therefore, it is possible to the operational ton that the operated key 70 increased to keyboard 90 is operated, and can obtain adjoint The operation feeling of the reversion action of circular top part 10a, therefore, it is possible to obtain good operation feeling.

Hereinafter, the effect brought using present embodiment is illustrated.

Layout arrangement of the multiple operated keys 70 of the keyboard 90 of the 5th implementation method to specify, the feature of the keyboard 90 exists In, possess multiple key switches 1, respectively correspondingly it is configured with key switch 1 with multiple operated keys 70.

According to the structure, by tongue piece portion 10f bend and operational ton can be set to it is larger, it is good therefore, it is possible to obtain Keyboard operation feeling.It should be noted that having used key switch 1 in above-mentioned structure, but can also be changed to make With the key switch 2 of second embodiment, the key switch 4 of the implementation method of key switch 3 or the 4th of the 3rd implementation method Structure.

Embodiments of the present invention are specifically described as described above, but the present invention is not limited to above-mentioned implementation Mode, can carry out various changes and implement in the range of the purport for not departing from invention.Can for example deform as following And implement the present invention, they fall within technology category of the invention.

(1) in the present embodiment, the periphery of tongue piece portion 10f is arranged to flat by the preferred circular top part 10a of leaf spring member 10 Face, but can still keep radius of curvature R 10a constant beyond dogleg section.Alternatively, it is also possible to be changed to further expand flat Face and reduce the inversion region of radius of curvature R 10a.

(2) in the present embodiment, leaf spring member 10 is employed as protuberance and is provided with the structure of the first convex portion 11, so And protuberance can also be auxiliarily set in addition.

(3) in the present embodiment, leaf spring member 10 has the structure for bending foot 10b, if but need not increase Operational ton, it is also possible to be set to make foot 10b almost non-deflecting structures.

(4) in first embodiment and the 3rd implementation method, the face of the Z2 sides of pressing member 71 is set to tabular surface And be shown, but can also be incited somebody to action in the same manner as the pressing member 46 shown in first embodiment and the 3rd implementation method The face of Z2 sides is set to the press section of annular shape.In such a situation it is preferred to the internal diameter of circular press section is set to than opening The smaller diameter of the diameter of portion 41a, 43a.Alternatively, it is also possible to be set to fix the face of the Z2 sides of pressing member 71 by deposition etc. Construction integration on sheet element 41,43.

(5) in the keyboard 90 of the 5th implementation method, it is arranged to be arranged with the key switch 1 of the construction of switch of monomer and enters Go diagram, but can also be altered to be configured to the switchboard of the one-piece type sheet for being arranged in parallel with multiple key switches. In addition, in first embodiment to the 4th implementation method, it would however also be possible to employ be configured to be arranged in parallel with multiple key switches The switchboard of one-piece type sheet.

Claims

1. a kind of key switch, possesses：

Fixed contact component；

Movable contact member, it is configured to be separate with the fixed contact component；And

Leaf spring member, it has can carry out pressing operation and with the dome-shaped circular top part for bloating to the movable contact member, And can carry out the circular top part reversion action,

The leaf spring member has the tongue piece portion internally protruded from the top of the circular top part,

The key switch is characterised by,

The region that is pressed of the leaf spring member is the annulus bigger than the tongue piece portion in top view.

2. key switch according to claim 1, it is characterised in that

The key switch possesses the sheet element kept to the circular top part of the leaf spring member,

The sheet element opening portion bigger than the tongue piece portion when position corresponding with the tongue piece portion has top view, and And with the sticking part of the ring-type towards the opening portion, a part for the circular top part is contacted with the sticking part.

3. key switch according to claim 2, it is characterised in that

The circular top part is arranged to larger dome-shaped of radius of curvature, and the height of the original state of the circular top part is the dome Less than the 1.2% of the radius of curvature in portion.

4. key switch according to claim 3, it is characterised in that

The radius of curvature of the circular top part of the original state of the leaf spring member be substantially 30mm, and the circular top part height It is substantially 0.14mm.

5. the key switch according to any one of claim 2 to 4, it is characterised in that

The sheet element has the shape bloated around the opening portion, and in top view from the vicinity of the sticking part Multiple slits are provided with towards than circular top part region in the outer part.

6. key switch according to any one of claim 1 to 5, it is characterised in that

The leaf spring member has what the peripheral part being connected from the periphery with the circular top part in top view was protruded laterally Multiple foots,

The foot has：Deflection division, it can be based on carrying out elastic deformation to the pressing operation of the circular top part；And bending Portion, it is prominent to the top side of the circular top part in the front end of the deflection division.

7. key switch according to any one of claim 1 to 6, it is characterised in that

The leaf spring member is used as the movable contact member, the front of the tongue piece portion and fixed contact portion material It separate.

8. key switch according to claim 7, it is characterised in that

The tongue piece portion has the protuberance prominent to the fixed contact component side in the front.

9. key switch according to claim 8, it is characterised in that

The protuberance is hemispherical.

10. key switch according to any one of claim 1 to 6, it is characterised in that

The movable contact member possesses the first piece portion being made up of synthetic resin and the moving contact portion being made up of electric-conductor,

The fixed contact component possesses second portion being made up of synthetic resin and the fixed contact portion being made up of electric-conductor,

The moving contact portion is opposite to the fixed contact portion and configures up,

Leaf spring member configuration in the top of the movable contact member, and configure make the front of the tongue piece portion every The position that the first piece portion presses the moving contact portion to fixed contact portion side.

11. key switches according to claim 10, it is characterised in that

The tongue piece portion has the protuberance prominent to the movable contact member side in the front.

12. key switches according to claim 11, it is characterised in that

The protuberance is hemispherical.

13. key switch according to any one of claim 1 to 12, it is characterised in that

The key switch possesses the pressing member for carrying out pressing operation to the leaf spring member,

The pressing member has and the press section for being pressed the corresponding ring-type in region.

A kind of 14. keyboards, wherein, layout arrangement of multiple operated keys to specify, the keyboard is characterised by,

Possess the key switch any one of multiple claims 1 to 12,

The key switch is respectively correspondingly configured with the multiple operated key.