CN2266787Y

CN2266787Y - Switch starter

Info

Publication number: CN2266787Y
Application number: CN 95220763
Authority: CN
Inventors: 廖谦
Original assignee: Acer Computer Co Ltd
Current assignee: BenQ Corp
Priority date: 1995-08-21
Filing date: 1995-08-21
Publication date: 1997-11-05
Anticipated expiration: 2005-08-21

Abstract

The utility model relates to a switch starter, comprising a rubber dome body, a shell and a cylindrical body; the rubber dome body which is arranged on the switch is fed to selectively start the switch; the shell is fed to accommodate the rubber dome body, the shell is equipped with an inner surface and an upper opening which defines a periphery; the cylindrical body moves back and forth in the shell, and the cylindrical body is guided by the periphery of the opening when moving back and forth. The cylindrical body is equipped with a grab tail; when the cylindrical body moves upwardly, the grab tail is limited to a slope of the inner surface of the shell; the key cap is equipped with a bottom surface; because of users' operation, the key cap and the cylindrical body move vertically back and forth in order to selectively make the apical body of a rubber ring deform to start the switch.

Description

Switching starter

The relevant a kind of switching starter (Actuator) of the utility model, especially a kind of switching starter of low noise.

Key switch widely applies to multiple industrial circle, in finger-impu system.

As shown in Figure 1, typical key switch comprises a thin film switch (Membrane swit-ch) 11, one plantation rubber acrosomes (Rubber Dome) 13, one housings (Housing) 15, one cylinders (Plunger) 17 and a keycap (Keycap) 19.Plantation rubber acrosome 13 be seat on thin film switch 11, and started thin film switch 11 by stress deformation optionally.Housing 15 contains plantation rubber acrosome 13, its tool one inner surface, and have a upper shed, opening has an edge of opening (Edge).Because user's operation, keycap 19 and cylinder 17 reciprocal and vertical ground motions optionally make 13 distortion of plantation rubber acrosome, to activate thin film switch 11, its tool one basal surface.In the reciprocating motion process of keycap 19, cylinder 17 reciprocating motion in housing 15, and be subjected to the guiding of aforementioned edge of opening.Element 14 is the support plate body (Support Plate) of key switch.Be formed with grab 171 on cylinder 17, when cylinder 17 upwards rebounded, its grab tail 12 was subjected to the inflexible limit of edge of opening and limits the upward stroke of cylinder 17.General speech, starter comprises plantation rubber acrosome 13, housing 15, cylinder 17 and keycap 19.

When the end user bleeds off the power of being executed and when cylinder 17 is rebounded, because the impulsive force of the point 121 of grab tail 12 and edge of opening 121a can produce a kind of annoying noise.

The purpose of this utility model is in order to solve above-mentioned noise jamming, to provide a kind of switching starter to reduce this noise.

Switching starter of the present utility model is achieved in that it comprises:

Selection on this switch starts the plantation rubber acrosome of this switch;

One holds the housing of this plantation rubber acrosome, and the plantation rubber acrosome has an inner surface and tool one upper shed, and opening has a periphery;

One periphery by this opening is guided in the cylinder that reciprocally moves in the housing, and this cylinder has a grab tail, and an inclined-plane of the limitation of movement of this grab tail table portion in housing is to reduce noise;

One keycap, it has a bottom surface, the reciprocal and vertical ground motion of keycap and cylinder, the deformability of plantation rubber acrosome selects to start this switch.

The purpose of this utility model, characteristics and advantage will be described in detail as follows with reference to the accompanying drawings in conjunction with the embodiments:

Fig. 1 (A), Fig. 1 (B) are the key switches of knowing technology.

Fig. 2 (A), Fig. 2 (B), Fig. 2 (C) are the switching starters of a preferred embodiment of the present utility model.

Fig. 3 (A), Fig. 3 (B), Fig. 3 (C) are the switching starters of another preferred embodiment of the present utility model.

Fig. 4 is the peninsula shape cylinder grab cutaway view that the utility model provides.

Fig. 5 is that cylinder can be the element cutaway view that separates with keycap.

With reference to figure 2, the key switch that the utility model provides comprises a thin film switch 21, plantation rubber acrosome 23, one housings, 25, one keycaps 27 and a cylinder 29.

Plantation rubber acrosome 23 is that seat is on thin film switch 21.In response to the power that the user executed, rubber dome body 23 optionally is out of shape to start thin film switch 21.Housing 25 holds plantation rubber acrosome 23 in it, and tool one upper shed, and opening has a periphery.Housing 25 tools one inner surface 251.

When keycap 27 moved back and forth, cylinder 29 was subjected to the reciprocally motion in the housing 25 that is guided on of opening periphery.

Keycap 27, its tool one bottom surface 271, and in response to user's pressed state, the vertical reciprocally motion that it is common with cylinder 29, and thereby optionally make 23 distortion of plantation rubber acrosome with starting switch 21.

Form a straight inclined-plane 22 or bent inclined-plane 22a on the inner surface 251 that is characterised in that housing 25 of the present utility model, so that cylinder 29 is when upwards rebounding, this straight inclined-plane 22 or bent inclined-plane 22a restrain the tail end 24 of grab 291.So, be convenient to lower the noise that is produced.Shown in Fig. 2 (A) and Fig. 2 (C), shock point 241 is away from the bottom surface 271 of keycap 27, and at a distance of d ₂Distance, this distance obviously than well known, the d as shown in Fig. 1 (B) ₁Distance is big.By the theory of applied mechanics as can be known, when other condition was all identical, the crooking ability of point 241 was put 121 crooking ability for big.Because the existence of inclined-plane 22 or curved ramp 22a, most of impulsive force that the point 241 on the cylinder grab 291 is produced all is dispersed to a horizontal direction.Move up in the bump in cylinder, the effect of the moment frictional force tool damping of Chan Shenging therebetween, and increase with the cylinder displacement.This damping can lower impulsive force, noise and impact the vibration that produces.Based on previous reasons, noise or impact shock that the utility model produces when cylinder 29 backhauls are little than well known.

With reference to the utility model second embodiment, Fig. 3 (A), housing 31 provide the fastener (Retainer) 33 of a peninsula shape form, when cylinder grab 35 rebounds, and its tail end 351 of fastener 33 buckles.By the profile of Fig. 3 (B) as can be known, tail end 351 impacts the interior inclined-plane or the interior skew surface of fasteners 33, makes impulsive force be dispersed to side direction, and because the damping that peninsula formula fastener 33 is provided, most kinetic energy all disappears.

The inwardly inclined portion of fastener 33 by the conduit of two vicinities, provides peninsula type fastener 33.The purpose of this conduit is preventing that vibration or noise that fastener 33 produces when impacting with grab tail end 351 are passed to housing 31 and keyboard module.

In another embodiment of Fig. 4, provide conduit 48 in grab 45 parts, to form peninsula formula grab tail end 453, as damping device.

The above embodiment of the utility model only be an illustrative nature, so the modification of some equalizations and change are also protected by claim of the present utility model.

For example, for knowing, the cylinder in the button starter must be formed in one as described above with keycap, or both be resolution element as shown in Figure 5.Under these two kinds of different modes, the utility model still can be implemented.

Furthermore, the starter that provides not only is applicable to above-mentioned thin film switch, also is applicable to other switch, as mechanical switch.

Claims

1, a switching starter is characterized in that, comprises:

The plantation rubber acrosome of a selective starting switch on this switch;

One holds the housing of this plantation rubber acrosome, and housing has an inner surface and tool one upper shed, and opening has a periphery;

One periphery by this opening is guided in the cylinder that reciprocally moves in the shell, and this cylinder has a grab tail, and the motion of this grab tail is subjected to the restriction on an inclined-plane of table portion in the housing;

2, starter according to claim 1 is characterized in that, described cylinder and keycap are an integral body.

3, starter according to claim 1 is characterized in that, described switch is a thin film switch.

4, starter according to claim 1 is characterized in that, described inclined-plane is bent inclined-plane.

5, a switching starter is characterized in that, comprises:

One on this switch, the plantation rubber acrosome of selective starting switch;

One holds the housing of this plantation rubber acrosome, and housing has a top and tool one upper shed, and opening has a periphery;

One periphery by this opening is guided in the cylinder that reciprocally moves in the shell, and this cylinder has a grab tail, and the motion of this grab tail is subjected to the restriction of a peninsula shape fastener at this top of housing;

6, starter according to claim 5 is characterized in that, described cylinder and keycap are an integral body.

7, starter according to claim 5 is characterized in that, described inclined-plane is bent inclined-plane.

8, a switching starter is characterized in that, comprises:

One periphery by this opening is guided in the cylinder that reciprocally moves in the shell, and this cylinder has the grab tail of a fork, and the motion of this grab tail is subjected to the restriction on an inclined-plane of table portion in the housing;

One keycap, it has a bottom surface, the reciprocal and vertical ground motion of keycap and cylinder, starting switch is selected in this plantation rubber acrosome deformability.

9, a switching starter is characterized in that, comprises:

One holds the housing of this plantation rubber acrosome, and this housing has a top and tool one upper shed, and this opening has a periphery;

One periphery by this opening is guided in the cylinder that reciprocally moves in the shell, and this cylinder has the grab tail of a fork, and the motion of this grab tail is subjected to the restriction of a peninsula shape fastener at this top of housing;

One keycap, it has a bottom surface, the reciprocal and vertical ground motion of keycap and cylinder, starting switch is selected in the deformability of plantation rubber acrosome.