CN1530802A - Key switch device and keyboard device - Google Patents

Abstract

A key switching device consists of multiple control lever part locked on base plate with one end side to be rotated freely, fixing part supported and lifted freely to the base plate as well as locked with another end of control level part, switching element being set between the base plate and the fixing part as well as being lifted by following with the fixing part for carrying on switching action and control lever part rotary shaft being cross-disposed with rotary shaft of control lever part locking in piece. The key board for this key switching device in thin and miniaturized pattern is provided by the present invention.

Description

Key switch and key board unit

Technical field

The present invention relates to be applied in the key board unit that in input-output device such as word processor, home computer, uses or the input switch device, well behaved key switch and possess the key board unit of this key switch.

Background technology

Explanation is applied to the key switch of the existing X type in the key board unit according to Fig. 4, Fig. 5.The installing component 31 that is made of sheet metal etc. has: diapire 31a; From the long support portion 31b that this diapire 31a cuts off under the dual-gripper state, a plurality of proper alignment forms; And from diapire 31a under cantilever position, cut off, with above-mentioned support portion 31b in couples, the fixed part 31c of the semicircle arcuation that forms of a plurality of proper alignment.In addition, configuration possesses the soft substrate (not shown) of a plurality of fixed contacts 32 on this diapire 31a.Movable contact component 33 has the movable part 33a of the cup-shaped that is made of resin material etc. and is arranged on the 33b of contact portion on the upper interior of movable part 33a, and this movable contact component 33 is installed on the soft substrate at the state with fixed contact 32 subtends.And when movable part 33a is pressed when mobile, the 33b of contact portion contacts fixed contact 32, also has, and when removing the pushing of movable part 33a, movable part 33a returns contactless state with regard to self-recovery, the 33b of contact portion.The 1st control lever parts 34 that are made of the moulded work of synthetic resin have: become コ font, a pair of arm 34a; The connecting portion 34b that connects the end of this a pair of arm 34a; And be arranged on columned lock part 34c on the other end of a pair of arm 34a.The 2nd control lever parts 35 that are made of the moulded work of synthetic resin have: a pair of arm 35a that becomes H shape; The connecting portion 35b that connects the central portion of this a pair of arm 35a; And be arranged on columned lock part 35c, 35d on the both ends of a pair of arm 35a.And, the the 1st and the 2nd control lever parts 34,35 place and make the 2nd control lever parts 35 positions in the 1st control lever parts 34 on both central part, make the 1st and the 2nd control lever parts 34,35 rotate cross-like combination possibly by turning axle 34d, become the eidograph structure of X-shaped, with turning axle 34d is fulcrum rotation, makes the upper side of the 1st, the 2nd control lever parts 34,35 can lifting.Also have, Zu He the 1st, the 2nd control lever parts 34,35 installations like this to installing component 31, as shown in Figure 4, at first, one end side of pushing a pair of arm 35a of the 2nd control lever parts 35 along the arrow directions X makes it to be in approaching state mutually, after making lock part 35c and fixed part 31c coupling, remove the pressing force of arrow directions X, make lock part 35c become the state that is locked in the fixed part 31c by the self-recovery power of arm 35a.Secondly, as shown in Figure 4, one end side of pushing a pair of arm 34a of the 1st control lever parts 34 along arrow Y direction makes it to become approaching state mutually, after making lock part 34c and support portion 31b coupling, remove the pressing force of Y direction, make lock part 34c become the state that is locked in the 31b of support portion by the self-recovery power of arm 34a.Like this, the 1st and the 2nd control lever parts 34,35 both sides are installed on the installing component 31 at the state of pushing a pair of arm 34a, 35a.And when the 1st, the 2nd control lever parts 34,35 were installed on the installing component 31, movable contact component 33 can be pushed by the 2nd control lever parts 35 in movable contact component 33 positions on the bottom of the central part of cross-like.The key top 36 that is made of the moulded work of synthetic resin constitutes upturned boat-shaped shape, has to be arranged on rail portion 36a that the groove by above-below direction on the following inside constitutes and the rail portion 36b that is made of the groove that is arranged on the transverse direction on the following inside.And key top 36 in the lock part 35d embedding rail portion 36b with the 2nd control lever parts 35, becomes the structure of being installed, being supported by the 1st, the 2nd control lever parts 34,35 when the connecting portion 34b with the 1st control lever parts 34 embeds rail portion 36a.Be configured to a key switch by a key top constituting like this 36, one group the 1st, the 2nd control lever parts 34,25, movable contact component 33, fixed contact 32 and installing component 31, dispose a plurality of such key switch and constitute key board units.Secondly, when the action of the so existing key switch of explanation, at first, when above the pressing key top 36, the 1st, the 2nd control lever parts 34,35 are pressed, and the 1st, the 2nd control lever parts 34,35 are that the fulcrum rotation descends with turning axle 34d.At this moment, when the state that the lock part 35a of the 2nd control lever parts 35 keeps with the 31c of portion that is fixed rotates, the state that the lock part 34c of the 1st control lever parts 34 supports with supported 31b slides on transverse direction and moves, also have, in 36 sides of key top, when the lock part 35d of the 2nd control lever parts 35 moved in rail portion 35b along sliding on the transverse direction, the connecting portion 34b of the 1st control lever parts 34 slided along longitudinal direction and moves in rail portion 36a.

And by the decline of the 1st, the 2nd control lever parts 34,35, the movable part 33a of rotary contact portion 33 is pressed, and the 33b of contact portion contacts, becomes the ON state with fixed contact 32.Secondly, when removing the pressing force at key top 36, by the self-recovery of movable part 33a, when the 1st, the 2nd control lever parts 34,35 are pushed back rising, also rise in key top 36, the state before the 1st, the 2nd control lever parts 34,35 and key top 36 turn back to and push becomes the OFF state.

Summary of the invention

(problem that invention will solve)

Though it is the key switch of said structure is widely used in key board unit of home computer etc.,, more and more higher to the requirement of the miniaturization of key switch, slimming along with the miniaturization of electronic device in recent years.But, at Fig. 4, in the key switch of structure shown in Figure 5, because as control lever parts 34, the turning axle 34d of 35 rotation center is positioned at control lever parts 34,35 length direction center, with this turning axle 34d is that the center is at control lever parts 34, connecting key top 36 on 35 the upper end side, control lever parts 34,35 lower end side is connected on installing component 31 sides, miniaturization with key switch, the slim target that turns to, when with control lever parts 34,35 when shortening, control lever parts 34,35 exist the limiting length that can rotate smoothly, and existence is miniaturization further, the shortcoming of slimming.Also have, look in the key switch of X type configuration in above-mentioned control lever parts side, under situation about pressing on the periphery above the shaft supporting part side at key top 36, the situation that exists key top 36 to be tilted to Fig. 5 A-B direction rather than flatly to press with descending, 33b of contact portion and fixed contact 32 discontiguous situations although existence key top is pressed.Therefore, even waiting with finger under the situation of the periphery above the pressing key top, also requirement reliably contact terminal portion carry out the key switch that key is imported.

The objective of the invention is to: solve above-mentioned problem, easy miniaturization, slimming are provided, even waiting with finger under the situation of the periphery above the pressing key top, also contact terminal portion carries out the key switch that key is imported reliably.Also have, the objective of the invention is to: provide to possess above-mentioned key switch, easily miniaturization and the superior key board unit of operating performance.

(for solving the means of problem)

For achieving the above object, the present invention adopts following structure.Key switch related to the present invention possesses: base portion; Make distolateral a plurality of control lever parts that movably are locked together in freely on this base portion; Because close with the other end side chain of these control lever parts, the key top supported freely to above-mentioned base portion lifting; And the lifting action of the following above-mentioned key top on-off element that carries out switch motion, this key switch is characterised in that: on the locking part at above-mentioned control lever parts two ends, form respectively and make above-mentioned control lever parts in its surfaces of revolution, rotate freely turning axle, one side's of above-mentioned control lever parts locking part becomes the 1st locking part that above-mentioned base portion or key top is movably supported freely above-mentioned turning axle, the opposing party's locking part becomes the 2nd locking part that axle supports above-mentioned turning axle, and the turning axle of the locking part of the control lever parts of at least one in the above-mentioned a plurality of control lever parts is configured on the turning axle of the locking part of other control lever parts or the direction that rotation intersects.

The key switch of said structure is characterised in that: the turning axle that supports the control lever parts at key top is configured in 2 the control lever parts on the cross one another direction at least.That is, each control lever parts be not the key switch that resembles in the past on crossover location the axle of 2 control lever parts be fixed, but be locked together in independently of one another on base portion and the key top.Owing to adopt such structure, even with the miniaturization of bond switching, slim turning under the situation of purpose with the contraction in length of control lever parts, operability in the time of also can not damaging the key input perhaps can be than the easier miniaturization of key switch, the slimming that possess existing X type supporting construction.

Also have, under the situation of the periphery when key is imported above the pressing key top, the key top is not to descend under the state that tilts but decline with almost keeping the horizontality former state.This situation, for example when the situation at control lever member supporting key top of considering for example to use 2, as key switch in the past, when the rotating shaft parallel configuration of the key top side of these control lever parts, be to allow the key top to tilt to the direction vertical with these turning axles, in structure of the present invention, in the turning axle of 2 control lever parts, because the inclination to the sense of rotation of a side turning axle is had the control lever component limitations of the turning axle that intersects with this turning axle, consequently key top lifting with being maintained at horizontal former state.Therefore, according to key switch of the present invention, in the shambling of the horizontal direction that can prevent the key top, the not lifting obliquely of key top can be carried out the switch motion of on-off element reliably when key is imported.

Also have, key switch related to the present invention is characterised in that: above-mentioned a plurality of control lever parts are by constituting with its 1st, the 2nd control lever parts of rotating shaft parallel configuration and the 3rd control lever parts that have turning axle on crisscross with the turning axle of above-mentioned the 1st, the 2nd control lever parts.Key switch according to this spline structure, in easy slimming, because the key top is by a pair of control lever parts and the control lever member supporting of intersecting with these control lever parts, the inclination that when the lifting of key top, more is difficult to produce the key top, can carry out the switch motion of on-off element reliably, can prevent that the sky of bond switching from striking.

Also have, key switch related to the present invention is characterised in that: the locking part at above-mentioned the 1st, the 2nd control lever parts and key top is configured on the locking part more lateral than above-mentioned the 1st, the 2nd control lever parts and base portion, the locking part of above-mentioned the 1st, the 2nd control lever parts and base portion constitutes the 2nd locking part that axle supports above-mentioned turning axle, and the locking part of above-mentioned the 1st, the 2nd control lever parts and base portion constitutes the 1st locking part that movably supports above-mentioned turning axle freely.According to said structure, when the lifting action at key top,, a pair of control lever parts put in the downside at key top because sliding, and can make the key top carry out lifting action not obliquely, sleekly.Also have, do not surpass the outstanding situation laterally of width control lever parts at key top.

Also have, key switch related to the present invention is characterised in that: in the slip locking part of above-mentioned the 1st, the 2nd control lever parts and base portion, the turning axle of above-mentioned the 1st, the 2nd control lever parts is locked together in the sliding bearing portion of the hook that is formed on the above-mentioned base portion, slides freely in the scope that above-mentioned turning axle leads in the sliding bearing portion of above-mentioned hook.According to said structure, because sliding bearing portion is formed on the hook, the operation that the turning axle of the 1st, the 2nd control lever parts is locked together in this sliding bearing portion becomes easy.

Also have, key switch related to the present invention is characterised in that: in the locking part of above-mentioned the 1st, the 2nd control lever parts and base portion, the turning axle of above-mentioned the 1st, the 2nd control lever parts is locked together in the sliding bearing portion of the hook that is formed on the above-mentioned base portion, and above-mentioned turning axle slides freely in the scope that leads in the sliding bearing portion of above-mentioned hook.According to said structure,, can suppress shambling of key top effectively owing to be limited to axial the moving of the rotation of the 1st, the 2nd control lever parts.

Also have, key switch related to the present invention is characterised in that: above-mentioned the 3rd control lever parts are held and are locked together in the swivel bearing portion that is formed on a pair of hook on the above-mentioned base portion, and above-mentioned the 3rd control lever parts are spacing on its turning axle length direction by the swivel bearing portion of above-mentioned hook.According to said structure, can prevent shambling of key top effectively.

Also have, key switch related to the present invention is characterised in that: above-mentioned key top and above-mentioned the 1st, the 2nd control lever parts are inserted logical being locked together in the bearing portion that is arranged on the above-mentioned key top with the axial region of above-mentioned the 1st, the 2nd control lever parts, the bearing portion at above-mentioned key top is set at the side wall portion clamping on the axial region both end sides of above-mentioned the 1st, the 2nd control lever parts, and is by this side wall portion that the bearing portion at above-mentioned key top is spacing on above-mentioned bearing minister degree direction.According to said structure, also can limit moving of the sealed key top of the 1st, the 2nd control lever parts, and then, can realize the key switch that seldom shambles.

Also have, key switch related to the present invention is characterised in that: above-mentioned key top and above-mentioned the 3rd control lever parts are locked together in the axial region of the sliding bearing portion at above-mentioned key top and above-mentioned the 3rd control lever parts, and above-mentioned axial region is positioned on the guiding board that is arranged in the above-mentioned sliding bearing portion, slides freely on this guiding board.

Also have, key switch related to the present invention is characterised in that: above-mentioned key top possesses with the sealed fixed part of above-mentioned control lever parts with by the key cover on this fixed part.According to such structure, owing to can provide the easy key switch of exchange of applied widely and key cover etc. with the structure member that constitutes by fixed part, control lever parts, base portion as using with irrelevant, the common parts of the kind of key cover.

Also have, key switch related to the present invention is characterised in that: above-mentioned control lever parts become and possess a pair of arm and connect one or more the コ font or the margo frontalis shape of connecting portion between this arm, and above-mentioned locking part is formed on the both ends of above-mentioned arm.In such structure, on the inboard owing to the control lever parts that above-mentioned on-off element can be configured in コ font or margo frontalis shape, can effectively utilize the space, can make key switch miniaturization easily.Also have,, can keep the level at key top with being configured more strongly because turning axle makes it to connect above-mentioned connecting portion, and then, in the time of can being implemented in lifting action, the key switch that the key top is difficult to tilt.

Also have, key switch related to the present invention is characterised in that: in above-mentioned a plurality of control lever parts, have that angulation is 90 degree between the turning axle of control lever parts of cross one another turning axle.That is, this structure is to possess the key switch of control lever parts of turning axle of rotating shaft direct cross of control lever parts that has with other.Because the configuration of the rotating shaft direct cross ground of control lever parts, can prevent above-mentioned key top most effectively to the shambling of horizontal direction, the inclination at the key top when reaching lifting action can realize the key switch that operability is outstanding.Also have,,, can utilize the space between key top and the base portion most effectively owing to can dispose the turning axle of control lever parts along a plurality of limit end at the key top of overlooking square shape usually if the rotating shaft direct cross of control lever parts is disposed.

Also have, key board unit related to the present invention is characterised in that: possess previous any one described key switch.The key board unit of this spline structure possesses the key switch of the invention described above, because the key top of bond switching can keep lifting under the horizontal state frequently, when the pressing key switchgear, can carry out the key input reliably and obtain outstanding operating performance.

Description of drawings

Fig. 1 is the three-dimensional structure diagram of the key switch of one embodiment of the present invention.

Fig. 2 is the exploded perspective view of key switch shown in Figure 1.

Fig. 3 A is the top skeleton view of key switch shown in Figure 1, and Fig. 3 B is the side view that the cut-away section structure is shown, and Fig. 3 C is the front view that the cut-away section structure is shown.

Fig. 4 is the exploded perspective view of the key board unit that possesses key switch in the past.

Fig. 5 is the sectional view of key switch shown in Figure 4.

Fig. 6 is the vertical view that an example of the key board unit that possesses key switch related to the present invention is shown.

Symbol description

1 ... key switch; 2 ... base plate (base portion); 3 ... the 1st control lever parts; 4 ... the 2nd control lever parts; 5 ... the 3rd control lever parts; 3a, 3b, 4a, 4b ... arm; 3c, 4c ... connecting portion; 3d, 3e, 4d, 4e, 5c ... axial region (turning axle); 3f, 4f, 5d ... axial region; 23,24,6d ... sliding bearing portion; 25 ... swivel bearing portion; 6b, 6c ... bearing portion; 13d, 13e, 14d, 14e, 16d ... slip locking part (the 1st locking part); 13c, 14c, 15c ... rotation locking part (the 2nd locking part); 6 ... fixed part (key top); 9 ... on-off element; 10 ... key cover (key top).

Embodiment

Below, with reference to the description of drawings embodiments of the present invention, certainly, the present invention only is defined in following embodiment.Fig. 1 is the three-dimensional structure diagram that the key switch of one embodiment of the present invention is shown, and Fig. 2 is the exploded perspective view of key switch shown in Figure 1.Also have, Fig. 3 A is the plane perspective view of key switch shown in Figure 1, and Fig. 3 B is the side view of the cut-away section structure of key switch shown in Figure 1, and Fig. 3 C is the front view that the part-structure of key switch shown in Figure 1 is shown.

Structure at the key switch 1 shown in these figure possesses: base plate (base portion) 2; One end is locked together in the 1st control lever parts 3 on this base plate 2; The 2nd control lever parts 4; The 3rd control lever parts 5; Be locked together in the fixed part 6 of opposing on the side end with each base plate 2 of each control lever parts 3,4; And by this fixed part 6 by key cover 10.Constitute the key top of key switch 1 in the present embodiment by fixed part 6 and key cover 10.

Base plate 2 is the slightly flat parts that are made of metal material, in order to rotate sealed freely each control lever parts 3,4,5, possess with the part of base plate 2 cut off in parallel to each other cantilever-shapedly form, a pair of side looks sliding bearing portion 23,24 and the swivel bearing portion 25 that hook cut-out portion constitutes.In these sliding bearing portions, front 23a, the 24a of sliding bearing portion 23 and 24 hook be configuration Face to face mutually, and a side's of swivel bearing portion 25 cut-out portion is configured between the sliding bearing portion 23, and the opposing party's cut-out portion is configured between the sliding bearing portion 24.Middle quadrature is overlooked by the cut-out portion of sliding bearing portion 23,24 and the cut-out portion of swivel bearing portion 25, with the coaxial position that is formed on bearing 23b in the sliding bearing portion 23,23,23b companion on and with the coaxial position that is formed on bearing 24b in the sliding bearing portion 24,24,24b companion on form swivel bearing portion 25,25.Bearing 25b, 25b companion also are formed on the coaxial position.Also have, the size of this base plate 2 can freely change in can the scope of each control lever parts 3～5 of sealed support, also has, and its material also can be altered to other material such as resin material.

Each control lever parts 3～5 are made of resin material or metal material etc., in lifting possibly in support fixation elements 6 and the key cover 10, play that its heave amplitude is limited in effect in the specialized range.The 1st control lever parts 3 are the shapes of overlooking the コ font, the arm 3a that integrated formation is a pair of, 3b and the connecting portion 3c that is connected these arms, at arm 3a, on the leading section outside of 3b, giving prominence at the axial region 3d that forms on the coaxial position of the outside of these control lever parts 3 in the sliding bearing portion 23 that is locked together in base plate 2,3e, these axial regions 3d, 3e is locked together in sliding bearing portion 23 respectively, 23 bearing 23b, on the 23b, the 1st control lever parts 3 are with axial region 3d, 3e is center when can rotate base plate 2, axial region 3d, can slide in the scope that 3e can lead in sliding bearing portion 23.That is, form slip locking part (the 1st locking part) 13d, 13e by the sliding bearing portion 23,23 of base plate 2 and axial region 3d, the 3e of the 1st control lever parts 3.And then side (base plate 2 sides) goes up and forms the taper 3g of portion, 3h below the leading section of arm 3a, the 3b of the 1st control lever parts 3, and the 3g of taper portion, 3h become same angle of inclination for arm 3a, 3b with forming.The 3g of these taper portions, 3h determine the angle of 3 pairs of base plates 2 of the 1st control lever parts, in the state that the 1st control lever parts 3 maximum limit are stood up, the 3g of these taper portions, 3h becomes with run into state of contact above the base plate 2, plays the effect of the angle of standing up of regulation the 1st control lever parts 3.In addition, the angle of standing up of the 1st control lever parts 3 also can be by the slip amplitude regulation of axial region 3d, 3e in sliding bearing portion 23.Also have, on the central part of the connecting portion 3c of the 1st control lever parts 3, form the columned axial region 3f thinner than the both end sides of connecting portion 3c, this axial region 3f is entrenched in 3 pairs of fixed parts 6 of the 1st control lever parts can be rotated.

The 2nd control lever parts 4 form same shape with above-mentioned the 1st control lever parts 3, are made of with the connecting portion 4c that is connected these arm 4a, 4b.On the leading section lateral surface of arm 4a, 4b, axial region 4d, 4e are darted on the coaxial position, the bearing 24b that these axial regions 4d, 4e are locked together in sliding bearing portion 24 goes up, can be that axial region 4d, 4e can slide in sliding bearing portion 24 when the center rotated to base plate 2 with this axial region 4d, 4e.That is, form slip locking part (the 1st locking part) 14d, 14e by the sliding bearing portion 24,24 of base plate 2 and axial region 4d, the 4e of the 2nd control lever parts 4.Also have, the columned axial region 4f that is arranged on the central part of connecting portion 4c is entrenched on the fixed part 6.Also have, shown in Fig. 3 B, below the leading section of arm 4a, 4b, form the taper 4h of portion on the side, stipulate the angle of standing up of the 2nd control lever parts 4.

The 3rd control lever parts 5 form overlooks the margo frontalis shape, in more detail, constitute by axial region 5c, 5d on the arm 5a, the 5b that similarly base plate 2 are fascinated with the arm of above-mentioned the 1st, the 2nd control lever parts 3,4 and the both ends that are erected at these arms 5a, 5b respectively. Axial region 5c, 5d form cylindric, and axial region 5c is locked in the swivel bearing portion 25 of base plate 2, and axial region 5d becomes with fixed part 6 sealed slidably.Therefore, in the 3rd control lever parts 5, as shown in Figure 3A, the axial region 5c sealed with base plate 2 forms rotation locking part (the 2nd locking part) 15c, the 15c that is locked in the swivel bearing portion 25,25, and axial region 5d and fixed part 6 form slip locking part (the 1st locking part) 16d simultaneously.

Each above control lever parts 3～5, under the state that is assembled into key switch 1, like that, symmetrical configuration control lever parts 3 and control lever parts 4 as shown in Figure 3A, surround these control lever parts 3,4 configuration control lever parts 5 shown in Fig. 3 B.And, the axial region 5d of axial region 3f, the 4f of the 1st, the 2nd control lever parts 3,4 and the 3rd control lever parts 5 configuration that is orthogonal in overlooking.Also have, in the key switch 1 of present embodiment, axial region 3f, the 4f of the key top side (fixed part 6 sides) of the 1st, the 2nd control lever parts 3,4 of left and right symmetrically configuration is configured in than on axial region 3d, the 3e of base plate 2 sides and axial region 4d, the 4e more lateral.Also have, in the locking part of base plate 2 and each control lever parts 3～5, since control lever parts 3～5 by and their sealed respectively sliding bearing portion 23～25 clampings, be limited to axial the moving of its rotation, can be suppressed at shambling of control lever parts 3～5 on the base plate 2.

Fixed part 6 possesses slightly the flat base plate 6a of portion and the 6c of bearing portion, the 6b of the both end sides that is formed on it and the 6d of sliding bearing portion, the 6d that the L word shape is looked in the side, constitutes fixed part 6 by them.The 6c of bearing portion, 6d are the cubic columns of growing crosswise along the face direction of base plate 6a, below diagram on the side (base plate 2 sides), have tunnel-like groove 6e, the 6f that establishes quarter on the length direction of separately the 6c of bearing portion, 6d.Also have, the extending direction of these grooves 6e, 6f is parallel to each other.And axial region 3f, the 4f of the 1st, the 2nd control lever parts 3,4 rotates respectively to insert freely and leads on these grooves 6e, 6f, forms rotation locking part (the 2nd locking part) 13c, 14c.The 6c of these bearing portions, 6d form ground respectively with the axial region 4f of the axial region 3f of the 1st control lever parts 3 and the 2nd control lever parts 4 length much at one, the gap in both chimerisms reduces in the scope that axial region 3f, 4f can rotate smoothly as much as possible.According to this structure, the 1st, the 2nd control lever parts 3,4 and fixed part 6 limit mutually to the axial mobile quilt of axial region 3f, 4f.Promptly, in the connecting portion 3c of the 1st control lever parts 3, by the side wall portion 3m, the 3m that are formed on the axial region 3f on the central portion and are formed on the discrepancy in elevation on the boundary portion with the both end sides of connecting portion 3c the 6c of bearing portion of fixed part 6 is limited in lengthwise location, the 6b of bearing portion of fixed part 6 is limited the position in the longitudinal direction by side wall portion 4m, the 4m of the boundary portion at the two ends of the axial region 4f of the connecting portion 4c of the 2nd control lever parts 4.And, because the 6b of bearing portion, 6c and base plate 6a are integrally formed, the 1st, the 2nd control lever parts 3,4 and fixed part 6 mutually on the direction of principal axis of axial region 3f, 4f the position be limited.2 6d of sliding bearing portion, 6d become side L font, are connected at the interval that has regulation on their the leading section exterior side on the dark side end face of diagram of base plate 6a.That is, the top of the 6d of sliding bearing portion, 6d is configured on base plate 2 sides than the low one section ground of base plate 6a.And, on the 6d of this sliding bearing portion, 6d,, form sliding bearing portion shown in Figure 1 (the 1st locking part) 16d, 16d by the axial region 5d of the previous control lever parts 5 of mounting.In this slip locking part 16d, 16d, make in the scope that axial region 5d can lead in the upper face side of the 6d of sliding bearing portion, 6d on the 6d of sliding bearing portion, the 6d and can slide.Also have, and the insied width (distance the inner face of arm 5a, 5b) of arm 5a, the 5b of the outer width of the 6d of sliding bearing portion, the 6d of row arrangement (distance from the lateral surface of a side the 6d of sliding bearing portion to the lateral surface of the opposing party's the 6d of sliding bearing portion) and the 3rd control lever parts 5 forms almost samely, and fixed part 6 and the 3rd control lever parts 5 are limited mutually to axial the moving of axial region 5d.

On-off element 9 is made of fall the movable part 9b of cup-shaped and the 9a of contact portion that has on the inner face top that is arranged on it that rubber-like resin materials such as rubber etc. constitute, with its wide-mouth side on the base plate 2 that the base plate 6a that is positioned in fixed part 6 under the state of base plate 2 sides and Be Controlled rod unit 3～5 surround.Above-mentioned contact 9a of portion and fixed contact (not shown) the subtend setting that is arranged on the base plate 2.Also have, this on-off element 9 plays when non-the use fixed part 6 afterburning effects to lifting position.Also have, the thin plate switch that on-off element 9 also can be replaced with the lamination of the lower plate contact subtend separately of the upper plate of travelling contact formation and fixed contact formation is configured on the upside or downside of base plate 2.

Key cover 10 is waited by the processing that is shaped and forms the outer slightly platform shape that forms, and becomes the emancipated shape of falling the ship shape in below.In addition, form the literal (not shown) of numeral or alphabetical sequence etc. on it by printing.Key cover 10 constitutes the key top that is connected the key switch 1 on the fixed part 6.In addition, this key cover 10 and the fixed part 6 key top that also can form as one certainly.

The key switch 1 that possesses the present embodiment of said structure parts, as shown in Figure 1, fixed part 6 and key cover 10 lean against the top by the elastic force bullet of on-off element 9 when non-working condition.And, carry out key when input, fixed part 6 interlocks that are connected with key cover 10 decline when pushing from the upper face side of key cover 10.And, on-off element 9 distortion that side is pressed below fixed part 6, the contact portion of on-off element 9 inside runs into the fixed contact on the base plate 2 and contacts, switch becomes conducting state, when the finger of pressing key cover 10 is left away, come to the top by bullet once more by the elastic restoring force fixed part 6 of on-off element 9 and key cover 10.

Be accompanied by the lifting action of above-mentioned key cover 10, the action of each control lever parts 3～5 is as follows.The 1st control lever parts 3 of balanced configuration and the 2nd control lever parts 4, be accompanied by and the locking part of fixed part 6 moving downwards, be locked together in axial region 3d, the 3e in the sliding bearing portion 23 and the axial region 4d, the 4e that are locked together in the sliding bearing portion 24 move horizontally in sliding bearing portion 23,24.That is, the leading section of the arm 3a of the 1st, the 2nd control lever parts 3,4 and the leading section of arm 4a move to approaching direction, and axial region 3f, 4f descend.Also have, owing to constitute stationary shaft with the locking part of the swivel bearing portion 25 of base plate 2, along with the decline of fixed part 6, the axial region 5d of the 3rd control lever parts 5 slides on the 6d of sliding bearing portion of fixed part 6 on one side and is toppled on one side.

Like this, the bond switching 1 of present embodiment is as the key switch of the supporting construction that possesses existing X-shaped, owing on the central part of control lever parts, do not form turning axle, even for the miniaturization of key switch, slimming contraction in length with each control lever parts 3～5, do not damage the flatness of the lifting action of key switch yet, can make each control lever parts 3～5 shorter than now, littler in addition.Therefore, if the key switch 1 that will possess present embodiment, can either not damage the key operability in when input as input media, can easily realize miniaturization, the slimming of keyboard or electronic device again.

Also have, the key switch 1 of present embodiment can keep key cover 10 flatly to carry out lifting action, prevents that the sky of key from striking, and can carry out the key input reliably.Even this is that key cover 10 (fixed part 6) becomes the cause of the structure that does not tilt owing to possess above-mentioned control lever parts 3～5 under the situation of pushing on the periphery of key cover 10.Promptly, if consider not to be provided with under the situation of the 3rd control lever parts 5, in the 1st, the 2nd control lever parts 3,4 of left and right symmetrically configuration, fixed part 6 can fascinate on the sense of rotation of axial region 3f, the 4f of fixed part 6 sides, and, limited inclination to the sense of rotation of above-mentioned axial region 3f, 4f by the axial region 5d of the direction of intersecting with these axial regions 3f, 4f in the present embodiment because control lever parts 5 are set.

Also have, the key switch 1 of present embodiment does not almost shamble the outstanding operating performance in the time of accessing the key input in the horizontal direction at key top.This be since control lever parts 3～5, fixed part 6 and with the locking part of base plate 2 in adopted the cause of the structure that shambles that can suppress horizontal direction.Promptly, with the locking part of base plate 2 and control lever parts 3～5 in, at first, bearing portion 23～25 is made of a pair of parallel cut-out portion, be locked together in by axial the moving of the locational control lever parts of bearing portion 23～25 clampings and limit by bearing portion 23～25, in the locking part of fixed part 6 and control lever parts 3～5, the 6c of bearing portion of fixed part 6,6b is entrenched in respectively than the 1st, the 2nd control lever parts 3,4 connecting portion 3c, the axial region 3f of the cylindric formation that 4c is thinner, among the 4f, fixed part 6 is to axial region 3f, move by axial region 3f the axial position of 4f, the side wall portion 3m at 4f two ends, the 4m restriction.

Like this, according to the key switch 1 of present embodiment, because when key import, the not inclination of key top does not almost have shambling of key top yet during the lifting of key top, does not have the sky switch of stroking, and can access outstanding operating performance.

In addition, the present invention only limits to above-mentioned embodiment, can carry out suitable change in technical scope of the present invention.For example, in key switch shown in Figure 11, be that centrosymmetric configuration with 3,4 pairs of key switch 1 of the 1st, the 2nd control lever parts constitutes, 1st, the 2nd control lever parts 3,4 also can adopt and be tilted to the ground configuration of same direction, perhaps, also can on arm 3a, the 3b of the 1st, the 2nd control lever parts 3,4,4a, 4b, form hinge, carry out the structure of the lifting action at key top by the bending of this hinge.

(key board unit) Fig. 6 is the stereographic map of an example that the key board unit of the key switch that possesses above-mentioned embodiment is shown, and key board unit 100 is made of a plurality of key switch 102 that is arranged on the casing 101.Can keep the horizontal level at key top according to the key board unit 100 relevant of such formation when the lifting action at key top with present embodiment, also have, owing to possess the key switch that shambles 102 that does not almost have the key top, when key is imported, do not have the sky of key to strike, can carry out the key input soon suitablely.In addition, in the big key switch 103 of space bar equidimension, also can be from key switch shown in Figure 11, will remove the structure member of key cover 10 in a plurality of structure of the bottom of the key cover of growing crosswise configuration.

(effect of invention)

As described above in detail, key switch related to the present invention possesses: base portion; Will The one distolateral a plurality of control lever parts that movably are locked together in freely on this base portion; By with these control lever parts Its distolateral sealed key top that above-mentioned base portion lifting is supported freely; And follow above-mentioned key top The lifting action switch element that carries out switch motion, the locking part at above-mentioned control lever parts two ends On, form respectively and make above-mentioned control lever parts in its surfaces of revolution, rotate freely rotating shaft, above-mentioned One side's of control lever parts locking part becomes above-mentioned base portion or key top is movably supported freely State the 1st locking part of rotating shaft, the opposing party's locking part becomes the 2nd lock that axle supports above-mentioned rotating shaft Close section, the rotating shaft of the locking part of the control lever parts of at least one in the above-mentioned a plurality of control lever parts Be configured on the rotating shaft of locking part or direction that rotation intersects of control lever parts to other Structure, can be than the easier miniaturization of key switch that possesses X-type supporting construction in the past, thin Type also has, the operating characteristics when not damaging the key input when miniaturization, slimming. Also have, When preventing the key top to the shambling of horizontal direction, the circumference above the pressing key top In the situation, the key top is descended under the state that tilts, can almost keep level ground to descend. Therefore, owing to there is not the sky in key when input to strike, there is not the key top according to key switch of the present invention yet Shamble, can access outstanding operating characteristics.

Again, owing to possess the key switch of the invention described above, relevant key board unit of the present invention becomes The keyboard dress with outstanding operating characteristics that easier miniaturization and the key that can fit are soon imported Put.

Claims (12)

1, a kind of key switch is characterized in that:

Possess: base portion; With distolateral a plurality of control lever parts that movably are locked together in freely on this base portion; By with its distolateral sealed key tops that described base portion lifting is supported freely of this control lever parts; And the lifting action of the following described key top on-off element that carries out switch motion, on the locking part at described control lever parts two ends, form respectively and make described control lever parts in its surfaces of revolution, rotate freely turning axle, one side's of described control lever parts locking part becomes the 1st locking part that described base portion or key top is movably supported freely described turning axle, the opposing party's locking part becomes the 2nd locking part that axle supports described turning axle, and the turning axle of the locking part of the control lever parts of at least one in the described a plurality of control lever parts is configured on the turning axle of the locking part of other control lever parts or the direction that rotation intersects.

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

The the 1st, the 2nd control lever parts that described a plurality of control lever parts are disposed in parallel to each other by its turning axle and the 3rd control lever parts that have turning axle on the direction that the turning axle with described the 1st, the 2nd control lever parts intersects constitute.

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

The locking part at described the 1st, the 2nd control lever parts and key top is configured on the locking part more lateral than described the 1st, the 2nd control lever parts and base portion, the locking part at described the 1st, the 2nd control lever parts and key top becomes the 2nd locking part that axle supports described turning axle, and the locking part of described the 1st, the 2nd control lever parts and base portion becomes the 1st locking part that movably supports described turning axle freely.

4, key switch according to claim 3 is characterized in that:

Described the 1st, the 2nd control lever parts and with the locking part of base portion in, the turning axle of described the 1st, the 2nd control lever parts is locked together in the sliding bearing portion of the hook that is formed on the described base portion, and described turning axle slides freely in the scope that leads in the sliding bearing portion of described hook.

5, key switch according to claim 4 is characterized in that:

Described the 1st, the 2nd control lever parts are formed on the sliding bearing portion clamping of a pair of hook on the described base portion of sealed each control lever parts, by the sliding bearing portion of described a pair of hook described the 1st, the 2nd control lever parts are limited on its turning axle length direction.

6, according to any one described key switch of claim 2 to 5, it is characterized in that:

The a pair of swivel bearing portion clamping that described the 3rd control lever parts are formed on the described base portion is sealed, is limited on its turning axle length direction by the swivel bearing portion of described hook, described the 3rd control lever parts.

7, key switch according to claim 2 is characterized in that:

Described key top and described the 1st, the 2nd control lever parts are inserted logical being locked together in the bearing portion that is arranged on the described key top with the axial region of described the 1st, the 2nd control lever parts, the bearing portion at described key top is set at the side wall portion clamping of the axial region both end sides of described the 1st, the 2nd control lever parts, is limited in described bearing minister degree direction by this side wall portion.

8, key switch according to claim 2 is characterized in that:

Described key top and described the 3rd control lever parts are locked together in the axial region of the sliding bearing portion at described key top and described the 3rd control lever parts, and described axial region is positioned on the guiding board that is arranged in the described sliding bearing portion, slides freely on this guiding board.

9, key switch according to claim 1 is characterized in that:

Described key top possesses with the sealed fixed part of described support component with by the key cover on this fixed part.

10, key switch according to claim 1 is characterized in that:

Described control lever parts become コ font or the margo frontalis shape that possesses a pair of arm and connect one or more connecting portion between this arm companion, form described the 1st, the 2nd locking part on the both ends of described arm respectively.

11, key switch according to claim 1 is characterized in that:

In described a plurality of control lever parts, have that angulation is 90 degree between the turning axle companion of control lever parts of cross one another turning axle.

12, a kind of key board unit is characterized in that:

Possesses the described key switch of claim 1.

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