CN1209597A

CN1209597A - Press key

Info

Publication number: CN1209597A
Application number: CN 97113390
Authority: CN
Inventors: 林山峰
Original assignee: Acer Computer Co Ltd
Current assignee: BenQ Corp
Priority date: 1997-08-21
Filing date: 1997-08-21
Publication date: 1999-03-03
Anticipated expiration: 2017-08-21
Also published as: CN1093684C

Abstract

The present invention relates to a kind of key, including a key cap, a baseplate, a support mechanism, a switch element and a balancing lever, in which two sides of said balancing lever are respectively covered with a tubural elastic body, and the first end of said elastic body is placed against first pair of conduit elements of the baseplate, so that said balancing lever and said elastic body can prevent the production of horizontal relative movement between the key cap and the baseplate.

Description

Button

The present invention relates to a kind of button, particularly relate to a kind of long button that is called the multiple key of length that is positioned on the keyboard.

Thin button switch with scissors-type supporting construction is widely used on the notebook computer.United States Patent (USP) the 5th, 512, No. 719, the 5th, 457, No. 297, the 4th, 433, No. 225, the 4th, 580, No. 022, the 4th, 902, No. 862, the 5th, 280, No. 147, the 5th, 329, No. 084, the 5th, 382, No. 762, the 5th, 399, No. 822, the 5th, 463, No. 195, the 5th, 466, No. 901, the 5th, 504, No. 283, the 5th, 519, No. 569, the 5th, 512, No. 719, the 5th, 278, No. 371, the 5th, 278, No. 372, the 5th, 278, No. 374, No. the 237991st, Taiwan utility model " bridge formation formula Computer key switch ", utility model No. 282857 " keyboard keyboard structure " and No. the 286794th, utility model " keyswitch ", Taiwan utility model No. 86200053 " keyswitch with scissor arm element " discloses the thin button switch of scissors-type supporting construction respectively.

Its shape of key on the keyboard is generally square, but some key length is longer, and as ENTER, SPACE, SHIFT key etc., these keys are commonly referred to as the multiple key.

Thin button switch with the scissors-type supporting construction is an example, and generally speaking, the multiple key comprises arm element, an outer arm element, a flexible member, a thin film switch, a balance stem and a substrate in the keycap.This inner arm member and outer arm element slidably and rotatably are joined together to form the scissors-type supporting construction of keyswitch.This substrate has a main flat surfaces, is formed with a pair of reception conduit and on it simultaneously and accepts part.Keycap has a basal surface, forms one first pair of isolated part and one second pair of isolated part of accepting accepted on this basal surface.Interior arm element has first axostylus axostyle at its first end, the isolated part of accepting of the first couple that this first axostylus axostyle is rotationally attached to this keycap.Interior arm element comprises one second axostylus axostyle at its second end, and this second axostylus axostyle slidably places the part of accepting of this substrate rotatably.When this switching manipulation, the upper surface slide of this second axostylus axostyle contacts this inside surface of accepting part rotatably.Outer arm element is provided with a protruding tip, and it slidably is contained in rotatably and is formed at the 3rd pair of substrate and holds in the corresponding conduit of conduit.Detailed structure can be with reference to No. the 86200053rd, Taiwan utility model " keyswitch with scissor arm element ".

Except said elements, also has a balance stem in traditional multiple key structure.Longer because of the multiple key length, as this balance stem is not set, the user is if push the non-middle position of keycap, horizontal reference plane relatively, and tilt phenomenon can appear in the multiple key.After settling this balance stem, even the user pushes the non-middle position of keycap, the multiple key tilt phenomenon can not occur yet.But when assembling keycap, interior arm element, outer arm element, flexible member, balance stem and substrate, must provide each component tolerances value, so that each movable element can successfully make up.Therefore but also because there is this tolerance in each interelement, even installed balance stem additional, keycap still can wave in the horizontal direction, move, and then produces noise during operation.

The objective of the invention is to, provide a kind of height low, ultra-thin button, use, can prevent that the multiple key from tilting for the multiple key, can reduce again simultaneously traditional multiple key wave in the horizontal direction, crooked, reduce noise.

The object of the present invention is achieved like this, and a kind of like this button promptly is provided, and it comprises: a keycap, and it has top plane and baseplane, this baseplane is provided with a keycap connecting portion and one first pair of telescoping part; One substrate, it is provided with a substrate connecting portion and one first pair of conduit element; One supporting construction, its upper end connects this keycap connecting portion, and its lower end connects this substrate connecting portion, and this keycap can be moved up and down with respect to this substrate vertical direction; One on-off element, it can connect conduction selectively according to moving up and down of this keycap; One balance stem, wherein to connect two side direction limits be the profile of Jiong word substantially to form to a vertical axial region, insert respectively in first pair of conduit element of this substrate on its two side direction limit, and the vertical axial region of this balance stem is embedded in first pair of telescoping part of this keycap; Wherein, the unification tubular elastomer is overlapped on two side direction limits of this balance stem respectively, and this elastic body one end is resisted against first pair of conduit element of this substrate, so this balance stem and this elasticity physical efficiency prevent to produce between this keycap and this substrate horizontal direction relative motion.

Describe embodiments of the invention in detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is the local stretch-out view of multiple button of the present invention;

Fig. 2 is the sectional view after the present invention combination;

Fig. 3 is keycap and balance stem, elastomeric syntagmatic figure;

Fig. 4 is second embodiment of balance stem of the present invention, elastic body combination;

Fig. 5 is second embodiment of conduit element 29 of the present invention; And

Fig. 6 is second embodiment of elastic body 23 among the present invention.

Referring to Fig. 1, multiple button of the present invention comprises a keycap 11, one interior arm element 19, one outer arm element 17, a flexible member 13, a diaphragm type switch 15, a balance stem 21 and a substrate 18.

Form on this substrate 18 first pair receive conduit element 29, second pair of conduit 183 and accepted part 181, this reception conduit 183 and accept part 181 and promptly constitute the substrate connecting portion wherein.Flexible member 13 is one-body molded with elastic film 130.

This keycap 11 has a basal surface, on this basal surface, form one first pair of telescoping part 117, one second pair and accept part 113, one the 3rd pair and accept part 119, wherein this second and third constitute the keycap connecting portions to accepting part 113,119.

Should reach the scissors-type supporting construction that outer arm element 17 slidably rotatably is joined together to form keyswitch by interior arm element 19, this supporting construction upper end connects this keycap connecting portion, the supporting construction lower end connects this substrate connecting portion, and this keycap can be moved up and down with respect to this substrate vertical direction.Should have first axostylus axostyle 193 at its first end by interior arm element 19, it is rotationally attached to second pair and accepts part 113; Should in arm element 19 comprise one second axostylus axostyle 195 at its second end, what it slidably was contained in this substrate 18 rotatably accepts part 181.Should outer arm element 17 be provided with the two protruding tips at its first end, it slidably is contained on the substrate 18 in first pair of corresponding conduit that holds conduit 183 rotatably; Should comprise the two protruding tips 185 in its second end axostylus axostyle outside by outer arm element 17, its 3rd pair of slidably being contained in this keycap 11 is rotatably accepted in the part 119.

After combination, cross fitting portion 115 embeds in the duct of flexible member 13 correspondences.This diaphragm type switch 15 can be connected conduction selectively according to moving up and down of this keycap 11.It is the profile of Jiong word to form substantially that a vertical axial region in this balance stem 21 connects two side direction limits, and insert respectively in first pair of conduit element 29 of this substrate on its two side direction limit, and the vertical axial region of this balance stem is embedded in first pair of telescoping part 117 of this keycap.

The present invention provides two tubular elastomer elements 23 with duct especially for solving the shortcoming of above-mentioned prior art, and this duct internal diameter equals or be slightly smaller than the diameter on balance stem 21 2 side direction limits.

Before being assemblied in balance stem 21 2 side direction limits in the corresponding conduit element 29, earlier tubular elastomer element 23 is sleeved on the side direction limit of balance stem 21 correspondences, that is by the state that is mounted to as left tubular elastomer element 23 states among Fig. 1 as the elastomer element right-hand among Fig. 1 23, then the side direction limit of balance stem 21 is inserted in the duct of conduit element 29, after assembling is finished, again that keycap 11 and flexible member 13, interior arm element 19, balance stem 21 is chimeric.Wherein, in the corresponding duct that cruciform fitting portion 115 embeds in the flexible member 13, the cross bar 193 of interior arm element 19 embeds second pair and accepts formed conduit on the part 113, the two protruding tips 185 of outer arm element 17 slidably are contained in the 3rd pair of this keycap 29 rotatably and accept in the part 119, vertical axial region of balance stem 21 embeds in second pair of telescoping part 117 formed conduit, and the part sectioned view after combination is finished as shown in Figure 2.

As shown in Figure 2, one end of elastic body 23 is resisted against first pair of conduit element 29 of this substrate, therefore this balance stem 21 and this elastic body 23 can prevent to produce between this keycap 11 and this substrate horizontal direction relative motion, so, can prevent keycap 11 wave, crooked, and then can reduce the noise that is produced.Elastic body 23 has three kinds of variations with the relation of this balance stem 21: (1) this elastic body one end is resisted against the vertical axial region of this balance stem and this junction, balance stem side direction limit, (2) this elastic body one end is resisted against this salient point place, balance stem side direction limit, as Fig. 4 211 shown in, (3) when the internal orifice dimension of this elastic body 23 is slightly smaller than balance stem side direction limit diameter, utilize this tubular elastomer convergent force to be attached to this balance stem side direction limit.

Existence because of elastomer element 23, do not influence the degree of freedom of the relative motion of balance stem 21 dual side-edges in conduit element 29 ducts, therefore during the stressed and upper and lower motion of keycap 11, balance stem 21 can be that low-angle upper and lower swing is done at the center with conduit element 29 still, still can carry out the traditional function of balance stem.

When Fig. 3 represents that the present invention is in assembled state, the graph of a relation of keycap 11 inner chimeric elements and balance stem 21, for the sake of brevity, other elements are not shown among this figure.Fig. 4 represents another embodiment of balance stem 21 and elastomer element 23 syntagmatics.Fig. 5 represents another embodiment of conduit element 29.Fig. 6 represents elastomer element 23 another embodiment.

Aforesaid supporting construction also can resemble traditional mast formula supporting construction, promptly receives the conduit element by an outstanding slider component and and forms movable chimeric and constitute one and slide and make up.Balance stem of the present invention and elastomeric design do not need any change, also can with the action that cooperatively interacts of mast formula supporting construction.

First of button pair of conduit element can be a pair of closed circle as mentioned above, also can be a pair of Contraband v notch v, can be for this elastic body second end firmly against arbitrary shape, shown in the embodiment of Fig. 5 conduit element 29.

The tubular elastomer of button can have a crack along its y direction as mentioned above, so, this elastic body can be from this fracture open with cover should the side of balance stem, so can simplify the assembling fit step of elastic body and side, shown in elastomer element 23 embodiment of Fig. 6.

Claims

1. button comprises: a keycap, and it has plane, top and baseplane, and described baseplane is provided with a keycap connecting portion and one first pair of telescoping part; One substrate, it is provided with a substrate connecting portion and one first pair of conduit element; One supporting construction, its upper end connects described keycap connecting portion, and its lower end connects described substrate connecting portion, and described keycap can be moved up and down with respect to described substrate vertical direction; One on-off element, it can connect conduction selectively according to moving up and down of described keycap; One balance stem, wherein to connect two side direction limits be the profile of Jiong word substantially to form to a vertical axial region, insert respectively in first pair of conduit element of described substrate on its two side direction limit, and the vertical axial region of described balance stem is embedded in first pair of telescoping part of described keycap; Wherein, the unification tubular elastomer is overlapped on two side direction limits of described balance stem respectively, and described elastic body one end is resisted against first pair of conduit element of described substrate, and described balance stem and described elasticity physical efficiency prevent to produce between described keycap and the described substrate horizontal direction relative motion.

2. button according to claim 1 is characterized in that, described supporting construction constitutes the combination of movable scissors formula by an interior arm element and an outer arm element.

3. button according to claim 1 is characterized in that, described supporting construction receives the conduit element by one of an outstanding slider component and described keycap baseplane and constitutes a slip combination.

4. button according to claim 1 is characterized in that, one first end of described tubular elastomer contacts with junction, side direction limit with the vertical axial region of described balance stem.

5. button according to claim 1 is characterized in that, one first end of described tubular elastomer contacts with a prominence on described balance stem side direction limit.

6. button according to claim 1 is characterized in that, described tubular elastomer utilizes its convergent force to be attached to described balance stem side direction limit.

7. button according to claim 1 is characterized in that, described first pair of conduit element has the conduit of a sealing respectively.

8. button according to claim 1 is characterized in that, described first pair of conduit element is Contraband shape respectively generally.

9. button according to claim 1 is characterized in that described tubular elastomer has a crack along its y direction, can be from the described tubular elastomer of described fracture open described elastomer sleeve is combined in the side direction limit of described stabilizer bar.