CN106847591B

CN106847591B - Key switch and the keyboard for having used the key switch

Info

Publication number: CN106847591B
Application number: CN201610821404.6A
Authority: CN
Inventors: 佐藤贵之
Original assignee: Alps Alpine Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 2015-10-14
Filing date: 2016-09-13
Publication date: 2019-07-12
Anticipated expiration: 2036-09-13
Also published as: JP6471076B2; TW201714194A; CN106847591A; TWI616917B; JP2017076488A

Abstract

The present invention provides a kind of keyboard for moving to the good key switch of operation feeling and having used the key switch for not hindering tongue piece portion.Key switch (1) has: fixed contact component (21)；With leaf spring member (10), it doubles as being configured to use with the movable contact member (15) that fixed contact component (21) are separate, and has and be able to carry out pressing operation and with the circular top part of dome-shaped bulging (10a), and it is able to carry out the reversion movement of circular top part (10a), leaf spring member (10) has from the near top of circular top part (10a) internally tongue piece portion (10f) outstanding, and the region (PR) that is pressed of leaf spring member (10) is annulus bigger than tongue piece portion (10f) in plan view.

Description

Key switch and the keyboard for having used the key switch

Technical field

It is acted the present invention relates to a kind of reversion with circular top part and carries out being in electrical contact isolated key switch and use The keyboard of the key switch.

Background technique

In the switching device used in electrical equipment, it is desirable that defined using being able to carry out reliable switch motion and having 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 contact with fixed contact portion and carries out electric switch movement, and movable contact member is inverted It acts and generates operation feeling.

Figure 35 is the schematic sectional view for indicating the structure of switching device 100 of patent document 1.Figure 36 is to indicate moving contact The schematic diagram of the general profile of component 101.Figure 37 is the top view for indicating a variation of movable contact member 101.Such as figure Shown in 35, switching device 100 includes movable contact member 101, has elasticity and electric conductivity；Substrate 102, has energy Enough fixed contact portions 103 being electrically connected with movable contact member 101；Driving body 104 presses movable contact member 101；It keeps Piece 105 keeps movable contact member 101 on substrate 102；And The lid component 106.

Movable contact member 101 is by having the metal plate of elasticity and electric conductivity to constitute, as shown in figure 36, comprising: bulging The circular top part 101a of formation, the foot 101b of the outer edge set on circular top part 101a and support dome portion 101a and being capable of root The contact portion 101c of movement according to operation.Contact portion 101c configuration when carrying out overlook view from the direction that circular top part 101a is bloated The central location of 101d in opening portion, and the linking part 101e by capableing of deflection deformation and circular top part 101a links Xiang Yuan The inside (direction Z2) of top 101a is prominent.It is fixed in holding first when pressing the operation portion 104b of driving body 104 downwards 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 is also deflected downward, circular top part 101a reversion.Pressing operation is being carried out to movable contact member 101 When, the linking part 101e and circular top part 101a flexure after contact portion 101c contact, 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 is also possible to following component, that is, linking part 101e is configured with an arm 101f around contact portion 101c, and arm 101f linearly extends and formed.

Citation

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

However, when having tongue-shaped arm 101f's (tongue piece portion) at the top of circular top part 101a using shown in Figure 37 Movable contact member 101 is come when constituting key switch, in order to keep movable contact member 101, in upper surface, configuration is protected sometimes Hold piece (sheet element).In this case, when having the movable contact member of tongue piece portion across sheet element pressure, sheet element meeting It is contacted with tongue piece portion, even if contact site is non-bonding part, it is also possible to interfere the movement of tongue piece portion.Accordingly, there exist interfere tongue The movement in piece portion is to be unable to get the project of good operation feeling.

Summary of the invention

For the present invention for solving above-mentioned project, its purpose is to provide one kind not to hinder the movement of tongue piece portion to operate The good key switch of sense of touch and the keyboard for having used the key switch.

Solution for solving the problem

Key switch of the invention has: fixed contact component；Movable contact member is configured to and the fixation Contact member contact separation；And leaf spring member, pressing operation can be carried out and to the movable contact member with circle by having The circular top part of dome-shaped bulging, and it is able to carry out the reversion movement of the circular top part, the leaf spring member has from the circular top part Near top internally tongue piece portion outstanding, the key switch are characterized in that the leaf spring member is pressed region It is annulus bigger than the tongue piece portion in plan view.

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

In addition, key switch of the invention is characterized in that, the key switch has 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 overlook view than described The big opening portion of tongue piece portion, and there is the cricoid sticking part towards the opening portion, a part of the circular top part and institute State sticking part contact.

According to this structure, leaf spring member fits in sheet element and is reliably maintained.Also, by being arranged on sheet element Opening portion, so that sheet element will not be contacted with tongue piece portion, no when bending tongue piece portion leaf spring member progress pressing operation It can hinder the movement of tongue piece portion.

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

According to this structure, by the way that the height of circular top part to be set as to the 1.2% of the radius of curvature of circular top part hereinafter, to tongue piece Become the curved surface close to plane around portion.Thereby, it is possible to by the cricoid sticking part and dome towards opening portion of sheet element The area of portion's contact is arranged larger, so as to reliably keep leaf spring member.Thereby, it is possible to provide not hinder tongue piece portion Movement and the key switch for reliably keeping 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 this structure, by the way that the radius of curvature of circular top part is set as substantially 30mm, substantially 0.14mm, energy will be highly set as Specific operation feeling is accessed, and can reliably keep bottom leaf spring member.

In addition, the sheet element preferably has the shape bloated around the opening portion in key switch of the invention Shape, and be equipped with multiple narrow near the sticking part towards than circular top part region in the outer part in plan view Seam.

According to this structure, by the way that slit is arranged, can reduce elongation around opening portion is the sheet element of the shape of bulging Tension.Even if being as a result, set to operating quantity larger, good operation feeling can be also obtained.

In addition, in key switch of the invention, the leaf spring member preferably have in plan view from the circle Multiple foots that the peripheral part of the periphery connection at top protrudes outward, the foot include deflection division, can be based on to institute It states the pressing operation of circular top part and carries out flexible deformation；And bending part, in the front end of the deflection division to the circular top part Top side is prominent.

According to this structure, when carrying out pressing operation, foot is also bent, by the way that bending part, energy is arranged in the front end of deflection division It is enough to bend it swimmingly in foot's flexure, so as to obtain better operation feeling.

In addition, key switch of the invention is characterized in that, the leaf spring member is used as the movable contact member, The front end side of the tongue piece portion and the fixed contact component are separate.

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

In addition, the preferably described tongue piece portion of above-mentioned key switch has in the front end side to fixed contact component side Protruding portion outstanding.

According to this structure, by the way that protruding portion is arranged tongue piece portion contact with fixed contact component is stablized.

In addition, the preferably described protruding portion of above-mentioned key switch is hemispherical.

According to this structure, by the way that protruding portion is set as hemispherical so that making to contact more stable.

In addition, key switch of the invention is also configured to, the movable contact member has by synthetic resin structure At first portion and the moving contact portion that is made of conduct piece, the fixed contact component has to be made of synthetic resin Second portion and the fixed contact portion being made of conduct piece, the moving contact portion to be placed in the fixed contact portion and configuration exist Top, the leaf spring member configuration are configured in the top of the movable contact member in the front end side for making the tongue piece portion The position in the moving contact portion is pressed to the fixed contact portion side across first portion.

It according to this structure, can be by the switching member being made of movable contact member and fixed contact component and by leaf spring structure The click spring that part is constituted is arranged to different components and constitutes key switch.

In addition, the tongue piece portion preferably has in the front end side to the moving contact in above-mentioned key switch Component side protruding portion outstanding.

According to this structure, by the way that protruding portion is arranged tongue piece portion is stablized to the pressing of movable contact member.

In addition, the preferably described protruding portion is hemispherical in above-mentioned key switch.

According to this structure, by the way that protruding portion is set as hemispherical so that pressing more stable.

In addition, key switch of the invention is characterized in that, have for carrying out pressing operation to the leaf spring member Pressing member, the pressing member, which has, is pressed the corresponding cricoid press section in region with described.

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

In addition, multiple operation keys of keyboard of the invention, with defined layout arrangement, which is characterized in that having more A above-mentioned key switch is respectively correspondingly configured with the key switch with the multiple operation key.

According to this structure, by tongue piece portion flexure operating quantity 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 for being set as bigger than tongue piece portion by the way that region will be pressed, thus to leaf spring member When carrying out pressing operation and bending tongue piece portion, the movement of tongue piece portion will not be hindered, in addition, the reverse turn of circular top part will not be interfered Make.Therefore, the movement for not hindering tongue piece portion and the key switch of available good operation feeling are capable of providing.

According to the present invention, have multiple above-mentioned key switches, respectively correspondingly opened configured with key with multiple operation keys It closes.Therefore, operating quantity can be set to by tongue piece portion flexure larger, therefore is capable of providing available good operation and touches The keyboard of sense.

Detailed description of the invention

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

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

Fig. 3 is the perspective view for indicating the key switch of first embodiment.

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

Fig. 5 is the main view for indicating the key switch of first embodiment.

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

Fig. 7 is the bottom view for indicating leaf spring member.

Fig. 8 is the main view for indicating leaf spring member.

Fig. 9 is the cross-sectional view after the IX-IX line cutting of Fig. 4.

Figure 10 is the cross-sectional view for indicating the pressing operation state in section identical with Fig. 9.

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

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

Figure 13 is the perspective view for indicating the key switch of second embodiment.

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

Figure 15 is the cross-sectional view after the XV-XV line cutting of Figure 14.

Figure 16 is the cross-sectional view for indicating the pressing operation state in section identical with Figure 15.

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

Figure 18 is the exploded perspective view of the key switch for the third embodiment observed from obliquely downward.

Figure 19 is the perspective view for indicating the key switch of third embodiment.

Figure 20 is the top view for indicating the key switch of third embodiment.

Figure 21 is the main view for indicating the key switch of third embodiment.

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

Figure 23 is the bottom view for indicating leaf spring member.

Figure 24 is the main view for indicating leaf spring member.

Figure 25 is the cross-sectional view after the XXV-XXV line cutting of Figure 20.

Figure 26 is the cross-sectional view for indicating the pressing operation state in section identical with Figure 25.

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

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

Figure 29 is the perspective view for indicating the key switch of the 4th embodiment.

Figure 30 is the top view for indicating the key switch of the 4th embodiment.

Figure 31 is the cross-sectional view after the XXXI-XXXI line cutting of Figure 30.

Figure 32 is the cross-sectional view for indicating the pressing operation state in section identical with Figure 31.

Figure 33 is the top view for indicating the keyboard of the 5th embodiment of the invention.

Figure 34 is the partial sectional view after the XXXIV-XXXIV line cutting of Figure 33.

Figure 35 is the schematic sectional view for indicating the structure of previous switching device.

Figure 36 is the schematic diagram for indicating the general profile of previous movable contact member.

Figure 37 is the top view for indicating the variation of previous movable contact member.

Description of symbols

1 key switch

2 key switches

3 key switches

4 key switches

10 leaf spring members

10a circular top part

10b foot

10f tongue piece portion

10i deflection division

10j bending part

10k peripheral part

11 first protrusions

15 movable contact members

16 first portions

17 moving contact portions

21 fixed contact components

21c first end sub-portion

22 bearing contact members

22d second end sub-portion

26 second portions

27 fixed contact portions

30 base members

31 receiving portions

31a accommodates bottom surface

41 sheet elements

The opening portion 41a

41b bellying

41c sticking part

41d slit

42 sheet elements

43 sheet elements

The opening portion 43a

43b bellying

43c sticking part

43d slit

44 sheet elements

44a operation portion

46 pressing members

The press section 46a

50 insulating elements

50a hollow part

60 switching members

61 movable contact members

62 fixed contact components

63 clearance components

70 operation keys

71 pressing members

72 shells

73 circuit boards

90 keyboards

100 switching devices

101 movable contact members

101a circular top part

101b foot

101c contact portion

The opening portion 101d

101e linking part

101f arm

102 substrates

103 fixed contact portions

The first fixed contact portion of 103a

The second fixed contact portion of 103b

104 driving bodies

104b operation portion

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 attached drawing.It should be noted that for the ease of reason Solve and suitably change the size of attached drawing.

[first embodiment]

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

The key switch 1 of first embodiment has: the leaf spring member 10 that uses as movable contact member 15 is equipped Fixed contact component 21 and base member 30, insulating element 50 and the sheet element 41 for supporting contact member 22.It needs to illustrate , in Fig. 1 into Fig. 5, key switch 1 is arranged to the construction of switch of monomer and is shown, however is also possible to base Body component 30, insulating element 50 and sheet element 41 are connected to the switch that can be arranged side-by-side the sheet of multiple leaf spring members 10 Structure.

Leaf spring member 10 is by having the metal plate of elasticity and electric conductivity to constitute, as shown in Figure 1, the leaf spring member 10 has It is standby: to have outer with the circular top part 10a of the shape of dome-shaped bulging, the peripheral part 10k being connect with the periphery of circular top part 10a, bearing The foot 10b of circumference 10k and from the near top of circular top part 10a internally tongue piece portion 10f outstanding.

Circular top part 10a is formed in a manner of to the bulging of the direction Z1 of Fig. 1.When carrying out overlook view from the direction of bulging, Circular top part 10a is round.Circular top part 10a has and can carry out making to rouse based on the pressing operation from bulging direction (direction Z1) The shape of the reversion movement of direction reversion out (referring to Fig. 8).In addition, having extensive to original bulging direction when the pressing is released Multiple elasticity.

As shown in Fig. 6 and Fig. 7, foot 10b is in plan view from the peripheral part connecting with the periphery of circular top part 10a 10k rise formed with protruding outward there are four.Foot 10b includes deflection division 10i, to the bulging direction phase with circular top part 10a Anti- direction (direction Z2) is stretched out and can carry out flexible deformation based on the pressing operation to 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 has can be in base Peripheral part 10k is supported when pressing operation makes circular top part 10a carry out reversion movement and is scratched after the reversion of circular top part 10a movement Bent elastic force.

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

As shown in figure 8, leaf spring member 10 has the foot 10b of longer on the direction Z1-Z2 (having height).It needs to illustrate , the following description enlargedly shows the size in the direction Z1-Z2 in fig. 8 compared with the direction X1-X2 in order to facilitate understanding. The tongue piece portion 10f of the leaf spring member 10 of original state is in foot 10b with the first protrusion 11 from peripheral part 10k height outstanding The mode bending of the roughly equal height and position in position.Circular top part 10a and the peripheral part being connect with the periphery of circular top part 10a 10k is set as the height dimension of the undersized of the height H10b than foot 10b.Moreover, being configured to the curvature of circular top part 10a Radius R10a is arranged larger.

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

Base member 30 is made of the synthetic resin of insulating materials.Fixed contact component 21 and bearing 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 The round configured in a manner of Chong Die with the center of circular top part 10a of leaf spring member 10 in plan view.In addition, branch Contact member 22 is held to be configured to abut with foot 10b.It should be noted that fixed contact component 21 and bearing contact member 22 On be connected with wiring (not shown), however the explanation to the wiring is omitted in the present specification.More specifically, base member 30 and fixed contact component 21 and bearing contact member 22 can be by embedded fixed contact component 21 and the branch such as being insert-molded It holds contact member 22 to form, or by being laminated with fixed contact component 21 and supporting the printed circuit board structure of contact member 22 At.

Insulating element 50 is made 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 set.Insulating element 50 is easy to manufacture from the base material of sheet by punch press process.

Sheet element 41 is made of the synthetic resin of flexible insulating materials, and is formed with opening portion 41a in central portion. Sheet element 41 has the bellying 41b in shape made of bloating around the 41a of opening portion to the direction Z1, has in bellying 41b It is standby: towards than circular top part 10a near sticking part 41c when cricoid sticking part 41c towards opening portion 41a, overlook view Region in the outer part and the multiple slit 41d being arranged.By the way that slit 41d is arranged, can reduce elongation around the 41a of opening portion is The tension of the sheet element 41 of the shape of bulging.Sheet element 41 is easy to manufacture from the base material of sheet by laser machining.In addition, It can be processed by the punch press process using mold.It should be noted that the number of slit 41d, shape are not limited to figure The mode shown can also be suitably designed according to purpose as described above.

Sheet element 41 is bonded with insulating element 50 by the adhesive layer (not shown) being arranged on sheet element 41.In addition, every It is bonded with base member 30 by adhesive layer (not shown) from component 50.Also, leaf spring member 10 is by the patch of sheet element 41 The adhesive layer (not shown) that is arranged on conjunction portion 41c and be bonded.

Sheet element 41 is when position corresponding with the tongue piece portion 10f of leaf spring member 10 has overlook view than tongue piece portion 10f Big opening portion 41a.Moreover, the cricoid sticking part 41c's of the sheet element 41 and circular top part 10a 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 tongue piece portion 10f will not to be divided 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, being illustrated to the movement of the key switch 1 of present embodiment.Fig. 9 is the IX-IX line cutting along Fig. 4 Cross-sectional view afterwards.Figure 10 is the cross-sectional view for indicating the pressing operation state in section identical with Fig. 9.It should be noted that with Fig. 8 is same, illustrates in order to facilitate understanding, compared with the direction X1-X2, enlargedly shows the size in the direction Z1-Z2.

The pressing member 71 (referring to Fig.1) covered configured with the opening portion 41a to sheet element 41.Operator by pair Pressing member 71 carries out pressing operation, to press sheet element 41 towards the direction Z2.As a result, from original state shown in Fig. 9 into Enter pressing operation state shown in Fig. 10.The reversion movement of circular top part 10a is carried out in Figure 10.In addition, the deflection division of foot 10b 10i is bent after the reversion movement of circular top part 10a.The first protrusion 11 is connected to fixed contact component 21, and tongue piece portion as a result, 10f is bent after abutting.It should be noted that optimizing various sizes and elastic force, so that the reversion of circular top part 10a acted It is connected at the time of end with the first protrusion 11 roughly the same at the time of fixed contact component 21.The cricoid fitting of sheet element 41 The bonding (corresponding with region PR is pressed) of portion 41c and a part of the circular top part 10a of leaf spring member 10, therefore along with circular top part The reversion movement of 10a and flexible deformation.

Opening portion 41a is formed on sheet element 41, therefore even if tongue piece portion 10f is bent, tongue piece portion 10f will not be with piece Component 41 contacts.To, even if being equipped with adhesive layer on sheet element 41, a part bonding of sticking part 41c and circular top part 10a In the case of, the movement of tongue piece portion 10f will not be hindered.Therefore, circular top part 10a can tongue piece portion 10f movement it is unobstructed In the case where carry out reversion movement, therefore good operation feeling will not be damaged.Also, multiple slit 41d are equipped with, therefore piece structure Part 41 is easy flexible when acting along with the reversion of circular top part 10a and carrying out flexible deformation, it is suppressed that sheet element 41 stretches Operation feeling is impacted.Even if being as a result, set to the operating quantity of pressing operation larger, good operation can be also obtained Sense of touch.

Also, leaf spring member 10 is configured to be arranged larger by the radius of curvature R 10a of the circular top part 10a under original state, Therefore it is capable of increasing the area of sticking part 41c.As a result, in the reversion movement because of circular top part 10a so that 41 flexible deformation of sheet element When, the sticking part 41c of sheet element 41 is difficult to remove from circular top part 10a.It should be noted that being not limited to circular top part above-mentioned The size of 10a, as long as the height H10a of original state reaches 1.2% ruler below 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 equipped with the first hemispherical protrusion 11, first protrusion 11 in the front end side of tongue piece portion 10f Abutted with fixed contact component 21, thus the contact with fixed contact component 21 it is stable and can be steadily conductive.In addition, damage A possibility that 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 It is bent to top side (side the Z1) direction outstanding of circular top part 10a.As a result, when the deflection division 10i of foot 10b flexure, bending Portion 10j is slided on bearing contact member 22 and it can be made more swimmingly to bend.Therefore, it can obtain preferably operating touching Sense.

Hereinafter, being illustrated to using effect brought by present embodiment.

The leaf spring member 10 of the key switch 1 of first embodiment has internally dashes forward from the near top of circular top part 10a Tongue piece portion 10f out, the key switch 1 are characterized in that the region PR that is pressed of leaf spring member 10 is to compare in plan view Tongue piece portion 10f big annulus.

According to this structure, the annulus for being set as bigger than tongue piece portion 10f by the way that region PR will be pressed, thus to leaf spring When component 10 carries out pressing operation and bends tongue piece portion 10f, the movement of tongue piece portion 10f will not be hindered, and will not interfere to justify The reversion of top 10a acts.Therefore, operation feeling is good.

In addition, the key switch 1 of present embodiment has 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 overlook view of sheet element 41, and With the cricoid sticking part 41c towards opening portion 41a, a part of circular top part 10a is contacted with sticking part 41c.

According to this 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 that sheet element 41 is not when bending tongue piece portion 10f the progress pressing operation of leaf spring member 10 It can be contacted with tongue piece portion 10f, the movement of tongue piece portion 10f will not be hindered.

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

According to this structure, by the way that the height H10a of circular top part 10a to be set as to the radius of curvature R 10a of circular top part 10a 1.2% hereinafter, so that become the curved surface close to plane around tongue piece portion 10f.Thereby, it is possible to by sheet element 41 towards opening The cricoid sticking part 41c of portion 41a is arranged larger with the circular top part 10a area contacted, so as to reliably keep leaf spring Component 10.Thereby, it is possible to provide the key switch moved and reliably keep leaf spring member 10 for not hindering tongue piece portion 10f.

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 this structure, by the way that the radius of curvature R 10a of circular top part 10a is set as substantially 30mm, height H10a is set as big 0.14mm is caused, specific operation feeling can be obtained, and reliably keeps bottom leaf spring member 10.

In addition, in the key switch 1 of present embodiment, sheet element 41 is preferably with bloating around the 41a of opening portion Shape, and multiple slits are equipped with towards than the region in the outer part circular top part 10a near sticking part 41c in plan view 41d。

According to this structure, by the way that slit 41d is arranged, the shape that elongation around the 41a of opening portion is bulging can be reduced The tension of sheet element 41.Even if being as a result, set to operating quantity larger, good operation feeling can be also obtained.

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

According to this structure, when carrying out pressing operation, foot 10b is also bent, and is rolled over by being arranged in the front end of deflection division 10i Turn of bilge 10j can be such that it swimmingly bends, so as to obtain better operation feeling when foot 10b is bent.

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 end side of 10f and fixed contact component 21 are separate.According to this structure, key can be constituted with less component count to open It closes.

It is used as in addition, the preferred tongue piece portion 10f of key switch 1 of present embodiment has in its front end side to fixed contact structure First protrusion 11 of 21 side of part protruding portion outstanding.According to this structure, make tongue piece portion 10f by the way that the first protrusion 11 is arranged and consolidate The contact of fixed contact component 21 is stablized.

In addition, the key switch 1 of present embodiment preferably the first protrusion 11 is hemispherical.According to this structure, by by One protrusion 11 be set as it is hemispherical can make to contact it is more stable.

[second embodiment]

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

The key switch 2 of second embodiment has: the leaf spring member 10 that uses as movable contact member 15 is equipped The base member 30 of fixed contact component 21, sheet element 42 and pressing member 46 integrated with sheet element 42.It needs It is bright, for identical as the key switch 1 of first embodiment in the component for the key switch 2 for constituting second embodiment Component, do not consider shape difference with identical appended drawing reference diagram, and omitted in the following description to the component Explanation.

Leaf spring member 10 is shape identical with the leaf spring member 10 in the key switch 1 of first embodiment.Leaf spring structure Multiple foot 10b that part 10 is protruded outward with the peripheral part 10k that the periphery of overlook view Shi Congyu circular top part 10a connects. Moreover, foot 10b includes deflection division 10i, flexible deformation can be carried out based on the pressing operation to 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 uses, and the front end side of tongue piece portion 10f and fixed contact component 21 are separate.In the front end of tongue piece portion 10f Side has to 21 side of fixed contact component the first protrusion 11 outstanding.

Base member 30 is made of the synthetic resin of insulating materials, and by the embedded fixed contact component 21 such as being insert-molded And bearing contact member 22 forms.As shown in figure 11, base member 30 has the case for having opening in the side Z1 of receiving portion 31 The shape of type.Fixed contact component 21 is made of the metalwork of electric conductivity, as shown in figure 11, in the receiving bottom surface of receiving portion 31 The central portion of 31a exposes.Fixed contact component 21 has first end sub-portion 21c, as shown in figs. 11 and 12, first end sub-portion 21c is arranged with exposing outward from the side of base member 30.In addition, metalwork structure of the bearing contact member 22 by electric conductivity At as shown in figure 11, in the outer edge exposing of receiving bottom surface 31a.Bearing contact member 22 has second end sub-portion 22d, such as schemes Shown in 11 and Figure 12, second end sub-portion 22d is arranged with exposing outward 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 bearing contact member 22, Similarly also insulate between first end sub-portion 21c and second end sub-portion 22d.

Sheet element 42 is made of the synthetic resin of flexible insulating materials, and operation portion 42a is prominent to the direction Z1.Pressing Component 46 is made of the synthetic resin of insulating materials, as shown in figure 12, is configured in the side Z2 of sheet element 42.Pressing member 46 is in Z2 Side has the press section 46a for being set as circular.Sheet element 42 is processed into recessed to the side Z1 at the position configured with pressing member 46 Sunken shape (being in convex form when from operation portion 42a), and form the sheet of thin-walled around the 46a of press section and be processed into The shape bloated to the direction Z1.The peripheral portion of sheet element 42 is mounted on base member 30 by coating material, adhesives Outer peripheral portion.It should be noted that can also sheet element 42 in the range of around the 46a of press section to peripheral portion Jointing material is arranged on (face of the side Z2) in face, and bonds the outer peripheral portion of itself and base member 30.

When the internal diameter of the circular press section 46a of pressing member 46 is set to overlook view and surround tongue piece portion 10f's The roughly equal diameter of diameter of a circle.The outer diameter of press section 46a is set greater than the circle for surrounding the opening for dividing tongue piece portion 10f Diameter, so as to press a part of circular top part 10a.That is, in overlook view leaf spring member 10, by pressure ratio tongue piece portion 10f big annulus is pressed region PR.It should be noted that the key switch 1 from first embodiment is different, pressing Do not have sticking part 41c on splenium 46a and sheet element 42.To, though press section 46a internal diameter in plan view with In the case where a part overlapping of tongue piece portion 10f, it need not also worry and be bonded and obstruction movement with tongue piece portion 10f.In addition, will not Interfere the reversion movement of circular top part 10a.

Next, being illustrated to the movement of the key switch 2 of present embodiment.Figure 15 is cut along the XV-XV line of Figure 14 The cross-sectional view having no progeny.Figure 16 is the cross-sectional view for indicating the pressing operation state in section identical with Figure 15.It should be noted that For ease of description, compared with the direction X1-X2, the size in the direction Z1-Z2 is enlargedly shown.

Operator is by carrying out pressing operation to operation portion 42a, to press sheet element 42 towards the direction Z2.As a result, from Original state shown in figure 15 enters pressing operation state shown in Figure 16.The reversion movement of circular top part 10a is carried out in Figure 16. In addition, the deflection division 10i of foot 10b is bent after the reversion movement of circular top part 10a.The first protrusion 11 is connected to fixation as a result, Contact member 21, and tongue piece portion 10f is bent after abutting.It should be noted that optimizing various sizes and elastic force, so that circle It is roughly the same at the time of being connected to fixed contact component 21 with the first protrusion 11 at the time of the end of the reversion movement of top 10a.

The outer diameter of press section 46a is set greater than the diameter of a circle for surrounding the opening for dividing tongue piece portion 10f, leaf spring member 10 are pressed annulus bigger than tongue piece portion 10f when region PR is overlook view, therefore can 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, it will not hinder tongue piece portion 10f's Movement.Therefore, circular top part 10a can carry out reversion movement in the case where the movement of tongue piece portion 10f is unobstructed, therefore will not Damage good operation feeling.

Leaf spring member 10 is equipped with the first hemispherical protrusion 11 in the front end side of tongue piece portion 10f, first protrusion 11 and solid Fixed contact component 21 abuts, therefore the contact with fixed contact component 21 is stablized, to conduct stabilization.In addition, damage is fixed A possibility that contact member 21, is smaller.

Hereinafter, being illustrated to using effect brought by present embodiment.

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

According to this structure, the annulus for being set as bigger than tongue piece portion 10f by the way that region PR will be pressed, to reliably press Press circular top part 10a.It is the region for being not provided with the circular press section 46a pressing of jointing material that this, which is pressed region PR,.Therefore, When bending tongue piece portion 10f the progress pressing operation of leaf spring member 10, the movement of tongue piece portion 10f will not be hindered, in addition, not The reversion of circular top part 10a can be interfered to act.Therefore, operation feeling is good.

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

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

The front end side of tongue piece portion 10f and fixed contact component 21 are separate.It according to this structure, can be with less component Number constitutes key switch.

It is used as in addition, the preferred tongue piece portion 10f of key switch 2 of present embodiment has in its front end side to fixed contact structure First protrusion 11 of 21 side of part protruding portion outstanding.According to this structure, make tongue piece portion 10f by the way that the first protrusion 11 is arranged and consolidate Contact between fixed contact component 21 is stablized.

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

In addition, the key switch 2 of present embodiment has the pressing member for carrying out pressing operation to leaf spring member 10 46, pressing member 46 has cricoid press section 46a corresponding with region PR is pressed.According to this structure, by having 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 Stablize.

[third embodiment]

Figure 17 is the exploded perspective view of the key switch 3 for the third embodiment of the present invention observed from oblique upper.Figure 18 be the exploded perspective view for the key switch 3 observed from obliquely downward.Figure 19 is the perspective view for indicating key switch 3.Figure 20 is Indicate the top view of key switch 3.Figure 21 is the main view for indicating key switch 3.Figure 22 is the vertical view for indicating leaf spring member 10 Figure.Figure 23 is the bottom view for indicating leaf spring member 10.Figure 24 is the main view for indicating leaf spring member.

The key switch 3 of third embodiment has: leaf spring member 10, insulating element 50, piece structure with circular top part 10a Part 43 and switching member 60.Switching member 60 is a kind of diaphragm, and is had: fixed contact component 62 is configured to and consolidates The movable contact member 61 and initial shape is isolated in the position far from fixed contact component 62 that fixed contact component 62 is separate The clearance component 63 of the movable contact member 61 of state.It should be noted that key switch 3 is arranged in Figure 17 into Figure 21 The construction of switch of monomer and be shown, however be also possible to insulating element 50, sheet element 43 and switching member 60 are connected At the construction of switch for the sheet that can be arranged side-by-side multiple leaf spring members 10.

Leaf spring member 10 is by having the metal plate of elasticity and electric conductivity to constitute, as shown in figure 17, the leaf spring member 10 tool It is standby: to have outer with the circular top part 10a of the shape of dome-shaped bulging, the peripheral part 10k being connect with the periphery of circular top part 10a, bearing The foot 10b of circumference 10k and from the near top of circular top part 10a internally tongue piece portion 10f outstanding.

Circular top part 10a is formed in a manner of to the bulging of the direction Z1 of Figure 17.When carrying out overlook view from the direction of bulging, Circular top part 10a is round.Circular top part 10a is had and can be made based on the pressing operation from bulging direction (direction Z1) Bloat the shape of the reversion movement of direction reversion (referring to Figure 24).In addition, having when the pressing is released to original bulging side To the elasticity of recovery.

As shown in Figure 22 and Figure 23, foot 10b is in plan view from the peripheral part connecting with the periphery of circular top part 10a 10k rise formed with protruding outward there are four.Foot 10b includes deflection division 10i, to the bulging direction phase with circular top part 10a Anti- direction (direction Z2) is stretched out and can carry out flexible deformation based on the pressing operation to 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 has can be in base The elastic force bent while supporting peripheral part 10k when pressing operation makes circular top part 10a carry out reversion movement.

Tongue piece portion 10f is towards with the inside bending of the circular top part 10a of dome-shaped bulging.As shown in Figure 18 and Figure 23, The front end side of tongue piece portion 10f is equipped with the first hemispherical protrusion 11.Tongue piece portion 10f is configured to and aftermentioned moving contact structure First portion 16 of part 61 abuts.

As shown in figure 24, leaf spring member 10 has the foot 10b of longer on the direction Z1-Z2 (having height).It needs Bright, the following description enlargedly shows the ruler in the direction Z1-Z2 in Figure 24 compared with the direction X1-X2 in order to facilitate understanding It is very little.The tongue piece portion 10f of the leaf spring member 10 of original state is in outstanding from peripheral part 10k with foot 10b with the first protrusion 11 The mode bending of the roughly equal height and position of height and position.Circular top part 10a and the periphery being connect with the periphery of circular top part 10a Portion 10k is set as the height dimension of the undersized of the height H10b than foot 10b.Moreover, being configured to the song of circular top part 10a Rate radius R10a is arranged larger.

Sheet element 43 is made of the synthetic resin of flexible insulating materials, and is formed with opening portion 43a in central portion. Sheet element 43 has the bellying 43b in shape made of bloating around the 41a of opening portion to the direction Z1, has in bellying 43b It is standby: towards than circular top part near sticking part 43c when cricoid sticking part 43c and overlook view towards opening portion 41a The region in the outer part 10a and the multiple slit 43d being arranged.By the way that slit 43d is arranged, it can reduce and be stretched around the 43a of opening portion The tension of the sheet element 43 of the shape of a length of bulging.Sheet element 43 is easy to manufacture from the base material of sheet by laser machining.Separately Outside, it can also be processed by the punch press process using mold.It should be noted that the number of slit 43d, shape do not limit In the mode of diagram, can also be suitably designed according to purpose as described above.

Sheet element 43 is bonded with insulating element 50 by the adhesive layer (not shown) being arranged on sheet element 43.In addition, every It is bonded with first portion 16 of aftermentioned movable contact member 61 by adhesive layer (not shown) from component 50.Also, leaf spring Component 10 is bonded by the adhesive layer (not shown) being arranged 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 overlook view than tongue piece portion 10f Big opening portion 43a.Moreover, the cricoid sticking part 43c's of the sheet element 43 and circular top part 10a 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 tongue piece portion 10f will not to be divided 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 had: fixed contact component 62 is configured to and fixed contact component 62 The moving contact of the movable contact member 61 of contact separation and the position isolation original state in separate fixed contact component 62 The clearance component 63 of component 61 (referring to Figure 25).

Movable contact member 61 has: by with insulating properties and flexibility synthetic resin constitute first portion 16, With the moving contact portion 17 being made of conduct piece.In addition, fixed contact component 62 has: by the synthetic resin with insulating properties Second portion 26 constituted and the fixed contact portion 27 being made of conduct piece.Clearance component 63 is by synthesizing tree with insulating properties Rouge part is constituted.First portion 16 and second portion 26 are bonded with clearance component 63 by adhesive layer (not shown).Movable touching Center of the point portion 17 in plan view with the circular top part 10a of leaf spring member 10 overlappingly configures.Fixed contact portion 27 with Moving contact portion 17 is opposed, and configures identical position in plan view.It should be noted that moving contact portion 17 and solid It is connected with wiring (not shown) in fixed contact portion 27, however the explanation to the wiring is omitted in the present specification.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 It makes.Additionally, it is preferred that the guard member that wiring (not shown) is protected in setting.

Next, being illustrated to the movement of the key switch 3 of present embodiment.Figure 25 is the XXV-XXV line along Figure 20 Cross-sectional view after cutting.Figure 26 is the cross-sectional view for indicating the pressing operation state in section identical with Figure 25.It needs to illustrate It is to illustrate in order to facilitate understanding, Figure 25 and Figure 26 are same as Figure 24, compared with the direction X1-X2, enlargedly show the side Z1-Z2 To size.

As shown in figure 25, the moving contact portion 17 of movable contact member 61 is to the fixed contact for being placed in fixed contact component 62 Portion 27 and configuration above.In addition, leaf spring member 10 is configured in the top of movable contact member 61, and configuration makes to be set to tongue First protrusion 11 of the front end side of piece portion 10f presses the position in moving contact portion 17 across first portion 16 to 27 side of fixed contact portion It sets.The pressing member 71 (referring to Fig.1 7) covered configured with the opening portion 43a to cover plate component 43.Operator is by pressing Component 71 is pressed to carry out pressing operation, to press sheet element 43 towards the direction Z2.The original state shown in Figure 25 enters as a result, Pressing operation state shown in Figure 26.The reversion movement of circular top part 10a is carried out in Figure 26.In addition, the deflection division of foot 10b 10i is bent while circular top part 10a carries out reversion movement.The first protrusion 11 is connected to first portion 16 as a result, and can Movable contact component 61 is bent after abutting, so that moving contact portion 17 is connected to fixed contact portion 27.It should be noted that making each Kind size and elastic force optimize, so that reversion at the time of moving contact portion 17 is connected to fixed contact portion 27 with circular top part 10a Movement is roughly the same at the time of end.One of the circular top part 10a of the cricoid sticking part 43c and leaf spring member 10 of sheet element 43 Divide bonding (corresponding with region PR is pressed), therefore the flexible deformation along with the reversion movement of circular top part 10a.

Opening portion 43a is formed on sheet element 43, therefore even if tongue piece portion 10f is bent, tongue piece portion 10f will not be with piece Component 43 contacts.To, even if being equipped with adhesive layer on sheet element 43, a part bonding of sticking part 43c and circular top part 10a In the case of, the movement of tongue piece portion 10f will not be hindered.Therefore, circular top part 10a can tongue piece portion 10f movement it is unobstructed In the case where carry out reversion movement, therefore good operation feeling will not be damaged.Also, multiple slit 43d are equipped with, therefore piece structure Part 43 is easy flexible when acting along with the reversion of circular top part 10a and carrying out flexible deformation, it is suppressed that sheet element 43 stretches Operation feeling is impacted.Even if being as a result, set to the operating quantity of pressing operation larger, good operation can be also obtained Sense of touch.

Also, leaf spring member 10 is configured to be arranged larger by the radius of curvature R 10a of the circular top part 10a under original state, Therefore it is capable of increasing the area of sticking part 43c.As a result, in the reversion movement because of circular top part 10a so that 43 flexible deformation of sheet element When, the sticking part 43c of sheet element 43 is difficult to remove from circular top part 10a.It should be noted that being not limited to circular top part above-mentioned The size of 10a, as long as the height H10a of original state reaches 1.2% ruler below 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 equipped with the first hemispherical protrusion 11 in the front end side of tongue piece portion 10f, so that this is first convex It is smaller that a possibility that movable contact member 61 (first portion 16), is damaged in portion 11.Therefore, contact is stablized.

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 It is bent to top side (side the Z1) direction outstanding of circular top part 10a.As a result, when the deflection division 10i of foot 10b flexure, bending Portion 10j is slided in first portion 16 and it can be made more swimmingly to bend.Therefore, better operation feeling can be obtained.Separately Outside, leaf spring member 10 has both resiliency brought by the click feel of circular top part 10a and the deflection division 10i of foot 10b.

Hereinafter, being illustrated to using effect brought by present embodiment.

The leaf spring member 10 of the key switch 3 of first embodiment has internally dashes forward from the near top of circular top part 10a Tongue piece portion 10f out, the key switch 3 are characterized in that the region PR that is pressed of leaf spring member 10 is to compare in plan view Tongue piece portion 10f big annulus.

In addition, the key switch 3 of present embodiment has 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 overlook view of sheet element 43, and With the cricoid sticking part 43c towards opening portion 43a, a part of circular top part 10a is contacted with sticking part 43c.

According to this 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 that sheet element 43 is not when bending tongue piece portion 10f the progress pressing operation of leaf spring member 10 It can be contacted with tongue piece portion 10f, the movement of tongue piece portion 10f will not be hindered.

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

According to this structure, by the way that the height H10a of circular top part 10a to be set as to the radius of curvature R 10a of circular top part 10a 1.2% hereinafter, so that become the curved surface close to plane around tongue piece portion 10f.Thereby, it is possible to by sheet element 43 towards opening The cricoid sticking part 43c of portion 43a is arranged larger with the circular top part 10a area contacted, so as to reliably keep leaf spring Component 10.Thereby, it is possible to provide the key switch moved and reliably keep leaf spring member 10 for not hindering tongue piece portion 10f.

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 is preferably with bloating around the 43a of opening portion Shape, and multiple slits are equipped with towards than the region in the outer part circular top part 10a near sticking part 43c in plan view 43d。

According to this structure, by the way that slit 43d is arranged, the shape that elongation around the 43a of opening portion is bulging can be reduced The tension of sheet element 43.Even if being as a result, set to operating quantity larger, good operation feeling can be also obtained.

In addition, in the key switch 3 of present embodiment, leaf spring member 10 have in plan view from circular top part Multiple foot 10b that the peripheral part 10k of the periphery connection of 10a is protruded outward.Moreover, foot 10b preferably includes deflection division 10i can carry out flexible deformation based on the pressing operation to circular top part 10a；And bending part 10j, 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 has to be made of synthetic resin First portion 16 and the moving contact portion 17 being made of conduct piece, fixed contact component 62 have be made of synthetic resin Two portions 26 and the fixed contact portion 27 being made of conduct piece, moving contact portion 17 to be placed in fixed contact portion 27 and configuration exist Top, the configuration of leaf spring member 10 in the top of movable contact member 15, and configure make the front end side of tongue piece portion 10f across the Position of a piece of portion 16 to 27 side of fixed contact portion pressing moving contact portion 17.

According to this structure, can by the switching member 60 being made 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 components and constitutes key switch.

In addition, tongue piece portion 10f, which preferably has in its front end side, to be used as to movable in the key switch 3 of present embodiment First protrusion 11 of 15 side of contact member protruding portion outstanding.According to this structure, make tongue piece portion by the way that the first protrusion 11 is arranged 10f stablizes the pressing of movable contact member 15.

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

[the 4th embodiment]

Figure 27 is the exploded perspective view of the key switch 4 for the 4th embodiment of the invention observed from oblique upper.Figure 28 be the exploded perspective view for the key switch 4 observed from obliquely downward.Figure 29 is the perspective view for indicating key switch 4.Figure 30 is Indicate the top view of key switch 4.

The key switch 4 of 4th embodiment has: leaf spring member 10, insulating element 50, piece structure with circular top part 10a Part 43 and switching member 60.It should be noted that for constitute the 4th embodiment key switch 4 component in The identical component of key switch 3 of third embodiment, do not consider shape difference and with identical appended drawing reference diagram, and The explanation to the component is omitted in the following description.

Leaf spring member 10 is in shape identical with the leaf spring member 10 in the key switch 3 of third embodiment.Leaf spring structure Multiple foot 10b that part 10 is protruded outward with the peripheral part 10k that the periphery of overlook view Shi Congyu circular top part 10a connects. Moreover, foot 10b includes deflection division 10i, flexible deformation can be carried out based on the pressing operation to 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 of shape bulging.As shown in Figure 18 and Figure 23, it is equipped in the front end side of tongue piece portion 10f hemispherical The first protrusion 11.

Sheet element 44 is made of the synthetic resin of flexible insulating materials, and operation portion 44a is prominent to the direction Z1.Pressing Component 46 is made of the synthetic resin of insulating materials, as shown in figure 28, is configured in the side Z2 of sheet element 44.Pressing member 46 is in Z2 Side has the press section 46a for being set as circular.Sheet element 44, which is processed into the position configured with pressing member 46a to the side Z1, to be recessed Shape (when from operation portion 44a be in convex form), and formed around the 46a of press section the sheet of thin-walled and be processed into The shape of the direction Z1 bulging.The peripheral portion of sheet element 44 is mounted on the outer of base member 30 by coating material, adhesives Circumferential portion.It should be noted that can also sheet element 44 in the range of around the 46a of press section to peripheral portion face Jointing material is set on (face of the side Z2), and keeps 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 overlook view and surround tongue piece portion 10f's The roughly equal diameter of diameter of a circle.The outer diameter of press section 46a is set greater than the circle for surrounding the opening for dividing tongue piece portion 10f Diameter, so as to press a part of circular top part 10a.That is, in overlook view leaf spring member 10, by pressure ratio tongue piece portion 10f big annulus is pressed region PR.It should be noted that the key switch 3 from third embodiment is different, pressing Do not have sticking part 43c on splenium 46a and sheet element 44.Therefore, though press section 46a internal diameter in plan view with In the case where a part overlapping of tongue piece portion 10f, it need not also worry and be bonded and obstruction movement with tongue piece portion 10f.In addition, will not Interfere the reversion movement of circular top part 10a.

Switching member 60 is a kind of diaphragm, and is had: fixed contact component 62 is configured to and fixed contact component 62 The moving contact of the movable contact member 61 of contact separation and the position isolation original state in separate fixed contact component 62 The clearance component 63 of component 61 (referring to Figure 31).

Next, being illustrated to the movement of the key switch 4 of present embodiment.Figure 31 is the XXXI-XXXI along Figure 30 Cross-sectional view after line cutting.Figure 32 is the cross-sectional view for indicating the pressing operation state in section identical with Figure 31.It needs to illustrate , illustrate in order to facilitate understanding, compared with the direction X1-X2, the size in the direction Z1-Z2 be enlargedly shown.

As shown in figure 31, the fixed contact portion 27 in the moving contact portion 17 of movable contact member 61 and fixed contact component 62 It is opposed and set above.In addition, leaf spring member 10 is configured in the top of movable contact member 61, and configuration makes to be set to tongue piece First protrusion 11 of the front end side of portion 10f presses the position in moving contact portion 17 across first portion 16 to 27 side of fixed contact portion It sets.Configured with pressing member 46 on sheet element 44 (referring to Figure 27).Operator by operation portion 44a carry out pressing operation, To press pressing member 46 towards the direction Z2.The original state shown in Figure 31 enters pressing operation shown in Figure 32 as a result, State.The reversion movement 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.The first protrusion 11 is connected to first portion 16 as a result, and movable contact member 61 is scratched after abutting Song, moving contact portion 17 are connected to fixed contact portion 27.It should be noted that optimizing various sizes and elastic force, so that can It is roughly the same at the time of end at the time of movable contact portion 17 is connected to fixed contact portion 27 with the reverse turn of circular top part 10a work.Piece A part of the cricoid sticking part 43c and the circular top part 10a of leaf spring member 10 of component 43 are (corresponding with region PR is pressed) viscous It closes, therefore the flexible deformation along with the reversion movement of circular top part 10a.

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

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 It is bent to top side (side the Z1) direction outstanding of circular top part 10a.As a result, when the deflection division 10i of foot 10b flexure, bending Portion 10j is slided in first portion 16 and it can be made more swimmingly to bend.Therefore, better operation feeling can be obtained.

Hereinafter, being illustrated to using effect brought by present embodiment.

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

In addition, in the key switch 4 of present embodiment, leaf spring member 10 have in plan view from circular top part Multiple foot 10b that the peripheral part 10k of the periphery connection of 10a is protruded outward.Moreover, foot 10b preferably includes deflection division 10i can carry out flexible deformation based on the pressing operation to circular top part 10a；And bending part 10j, 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 has to be made of synthetic resin First portion 16 and the moving contact portion 17 being made of conduct piece, fixed contact component 62 have be made of synthetic resin Two portions 26 and the fixed contact portion 27 being made of conduct piece, moving contact portion 17 to be placed in fixed contact portion 27 and configuration upper Side, the configuration of leaf spring member 10 in the top of movable contact member 15, and configure make the front end side of tongue piece portion 10f across first Position of the piece portion 16 to 27 side of fixed contact portion pressing moving contact portion 17.

In addition, tongue piece portion 10f, which preferably has in its front end side, to be used as to movable in the key switch 4 of present embodiment First protrusion 11 of 15 side of contact member protruding portion outstanding.According to this structure, by the way that the first protrusion 11 is arranged, so that tongue piece portion 10f stablizes the pressing of movable contact member 15.

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

In addition, the key switch 4 of present embodiment has the pressing member for carrying out pressing operation to leaf spring member 10 46, pressing member 46 has cricoid press section 46a corresponding with region PR is pressed.According to this structure, by having 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 Stablize.

[the 5th embodiment]

Figure 33 is the top view for indicating the keyboard 90 of the 5th embodiment of the invention.Figure 34 is the XXXIV- along Figure 33 Partial sectional view after the cutting of XXXIV line.It should be noted that Figure 34 is the signal that the specific structure of key switch 1 is omitted Figure.

The keyboard 90 of 5th embodiment has multiple operation keys 70 on shell 72 with defined layout arrangement, by each behaviour The pressing operation signal for making key 70 is transmitted to personal computer etc..It should be noted that the operation key of keyboard 90 shown in Figure 33 Layout is an example of common layout.

As shown in figure 34, key switch 1 is accordingly configured with operation key 70 on keyboard 90.The key of multiple configurations 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 Fixed contact component 21 and the base member 30 for supporting contact member 22, however the key switch 1 of multiple configurations is in wiring base It is connected and fixed contact member 21 and bearing contact member 22 on plate 73 and constitutes base member 30.In addition, circuit board 73 Mechanical strength is assisted by shell 72.It is connect 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 illustrated in first embodiment, and being bent by tongue piece portion 10f can will operate Amount is set to larger.Therefore, it is capable of increasing the operating quantity operated to the operation key 70 of keyboard 90, and can be obtained adjoint The operation feeling of the reversion movement of circular top part 10a, therefore good operation feeling can be obtained.

Hereinafter, being illustrated to using effect brought by present embodiment.

Multiple operation keys 70 of the keyboard 90 of 5th embodiment are existed with defined layout arrangement, the feature of the keyboard 90 In, have multiple key switches 1, with multiple operation keys 70 respectively correspondingly be configured with key switch 1.

According to this structure, operating quantity can be set to larger by being bent by tongue piece portion 10f, therefore can be obtained good Keyboard operation feeling.It should be noted that having used key switch 1 in above-mentioned structure, however can also be changed to make With the key switch 4 of the key switch 2 of second embodiment, the key switch 3 of third embodiment or the 4th embodiment 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 make various changes without departing from the spirit of the invention and implement.Such as it can be deformed as following And implement the present invention, they also belong to technology scope 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, however still radius of curvature R 10a can be kept constant other than dogleg section.It is flat alternatively, it is also possible to be changed to further expansion Face and the inversion region for reducing radius of curvature R 10a.

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

(3) in the present embodiment, leaf spring member 10 has the structure for bending foot 10b, if however not needing to increase Operating quantity, also can be set to makes foot 10b almost non-deflecting structure.

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

(5) in the keyboard 90 of the 5th embodiment, be arranged to be arranged with the key switch 1 of the construction of switch of monomer and into It has gone diagram, however can also be altered to be configured to be arranged in parallel with the switchboard of the one-piece type sheet of multiple key switches. In addition, can also use in first embodiment into the 4th embodiment and 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, has:

Fixed contact component；

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

Leaf spring member, pressing operation can be carried out and to the movable contact member with the circular top part of dome-shaped bulging by having, And it is able to carry out the reversion movement of the circular top part,

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

The key switch is characterized in that,

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

The key switch has 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 overlook view, and And there is the cricoid sticking part towards the opening portion, a part of the circular top part is contacted with the sticking part,

It is biggish dome-shaped that the circular top part is arranged to radius of curvature,

The sheet element has the shape bloated around the opening portion, and in plan view near the sticking part Multiple slits are equipped with towards than circular top part region in the outer part,

The leaf spring member, which has, in plan view to be protruded outward from the peripheral part connecting with the periphery of the circular top part Multiple foots.

2. key switch according to claim 1, which is characterized in that

The height of the original state of the circular top part is 1.2% or less the radius of curvature of the circular top part.

3. key switch according to claim 2, which is characterized in that

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

4. key switch according to any one of claim 1 to 3, which is characterized in that

The foot includes deflection division, can carry out flexible deformation based on the pressing operation to 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.

5. key switch according to any one of claim 1 to 3, which is characterized in that

The leaf spring member is used as the movable contact member, the front end side of the tongue piece portion and the fixed contact component Contact separation.

6. key switch according to claim 5, which is characterized in that

The tongue piece portion has in the front end side to fixed contact component side protruding portion outstanding.

7. key switch according to claim 6, which is characterized in that

The protruding portion is hemispherical.

8. a kind of key switch, has:

Fixed contact component；

The key switch is characterized in that,

The movable contact member has first portion being made of synthetic resin and the moving contact portion being made of conduct piece,

The fixed contact component has second portion being made of synthetic resin and the fixed contact portion being made of conduct piece,

The moving contact portion to be placed in the fixed contact portion and configuration above,

Leaf spring member configuration in the top of the movable contact member, and configure make the front end side of the tongue piece portion every First portion the position in the moving contact portion is pressed to the fixed contact portion side.

9. key switch according to claim 8, which is characterized in that

The tongue piece portion has in the front end side to the movable contact member side protruding portion outstanding.

10. key switch according to claim 9, which is characterized in that

The protruding portion is hemispherical.

11. key switch according to any one of claim 1 to 3, which is characterized in that

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

The pressing member, which has, is pressed the corresponding cricoid press section in region with described.

12. a kind of keyboard, wherein multiple operation keys are characterized in that with defined layout arrangement, the keyboard,

Have key switch described in multiple any one of claims 1 to 11,

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