CN87107901A

CN87107901A - The modified model membrane keyboard

Info

Publication number: CN87107901A
Application number: CN198787107901A
Authority: CN
Inventors: 约翰·沃斯佐克; 蒂博·鲍斯考维兹
Original assignee: Amalgamated Wireless Australasia Ltd
Current assignee: Amalgamated Wireless Australasia Ltd
Priority date: 1986-11-17
Filing date: 1987-11-17
Publication date: 1988-07-06
Also published as: GB2202991A; NL8702729A; DE3738817A1; JPS63141222A; AU8118587A; GB8726423D0

Abstract

Having collapses does in order to produce the membrane keyboard of tactile response, and it has a rigid basement, some depression of each pad area on its end.Each depression has a cup-shaped flexible portion, and this cup-shaped flexible portion extends between a bottom of caving in and a flexible upper film layer.A pair of contact is arranged on the upper strata, and during operation, this contact continuous to contact with bridge-type on the cup-shaped bottom.One elastic part reaches on the wall of depression from cup-like portion.During operation, depress flexible upper film, and force the wall that when the wall of depression rotates, also compresses cup-like portion.When second portion is pressed into the bottom of depression, rise and contact the diaphragm that moves down in the bottom of cup-like portion.

Description

The present invention relates to a kind of diaphragm type button and the keyboard that includes a series of this buttons.

A problem that exists during this diaphragm type keyboard uses is to lack tactile response, and operating personnel still can not discover out when button is pressed.

According to an aspect of the present invention, the invention provides a kind of button that comprises first contact member.This first contact member comprises the first resilient flexibility layer that has one or more conductive traces thereon, and the rigid basement of a depression is arranged on one second Elastic Contact member and its.The second Elastic Contact member have the second area that extends to concave bottom from the first area of outstanding first distance of recess walls, by the first area with its at least in the 3rd zone that the 3rd edges of regions contacts with concave bottom.The 3rd zone include one or more with coefficient conduction region of corresponding one or more conductive traces or track on the first resilient flexibility layer.The intensity of first area is higher than second area, therefore when pressing button, first flexible laminated be on the first area of rotating, center touching with the recess walls, the second and/or the 3rd zone produces and subsides owing to being pressed towards concave bottom, thus conduction region on the 3rd zone or conductive traces be pushed to above and corresponding one or more conductive traces on first flexible layer contact.

In one embodiment, this 3rd zone can be taper, thereby the outer rim of having only it is contacted with concave bottom, and as another kind of scheme, the 3rd zone also can be flat.In another embodiment, second area can be that middle part towards concave bottom has certain taper.

The circumference of depression is rectangle preferably, but also can be circular or be formed into open-ended rectangle by a pair of wall that is parallel to each other, and a kind of structure in back helps conductive traces is extracted from flexible structural member.

Electrically contact and to realize by contacting with bridge-type on lower level at the pair of conductive track on upper strata.The bridge-type contact can be formed by conductive rubber.

Below in conjunction with accompanying drawing one embodiment of the present of invention are described, this embodiment only plays the effect of an explanation example of the present invention.

Fig. 1 is the sectional side elevation of row's button;

Fig. 2 is the partial plan layout of this row's button;

Fig. 1 represents to embody the sectional side elevation of the array that the present invention includes several buttons.Each button is illustrated by the plate 1 that is placed on the rectangular depression above it, can the trade mark or the designation card 2 of button below it, be placed on the top of first flexible layer that comprises two conductive traces 4 that each button all has, substrate 5 has and by the corresponding wall 6 in plate 1 shown zone, what give prominence to from the top of wall 6 is the first area 8 of second elastic component 7.Zone 8 comprises that one has the segment section 9 of the thickening of spacing slightly with wall 6.The part 9 of this thickening strengthened its rigidity, and linked with wall by the section 10 that thickness has reduced.

The strength ratio first area 8 of second area 11 is low, and it extends to the bottom of depression 14, and the 3rd zone 12 is flat in the present embodiment, is placed on above the bottom, has the bridge-type contact 13 of conduction on it.

First flexible member 3 is pressed on the limit of first area 8 to pressing down when pressing the button, make it main crooked in its bonding pad 10, so second area 11 and the 3rd zone 12 are pressed towards concave bottom, above-mentioned one or two subsides and conduction region 13 up pushed away and meets with decline member 3 and overlap its conductive traces 4.Connect the further of button, may cause the second and/or the 3rd zone to produce and subside for the second time down by having increased footprint pressure, thus the tactile response of raising button.

Claims

1, a kind ofly be used for the button that keyboard comprises one first contact member, this first contact member comprises:

First flexible layer that has one or more conductive traces thereon:

One second Elastic Contact member,

The rigid basement that a depression is wherein arranged, the second Elastic Contact member comprise from the first area of outstanding first distance of recess walls, extend to from the first area second area of concave bottom and at least on the limit in the 3rd zone with contacted the 3rd zone of concave bottom,

Comprise the 3rd zone with coefficient one or more conductive traces of corresponding one or more conductive traces on first flexible layer.

The intensity of first area is higher than second area, thereby when pressing the button, first is flexible laminated on the first area that can be the center rotation with the recess walls, the second and/or the 3rd zone is pressed on concave bottom and produces and collapse, thereby above the conduction region on the 3rd zone or conductive traces pushed to and contact with corresponding one or more conductive traces on first flexible layer.

2, button as claimed in claim 1 is characterized in that above-mentioned the 3rd zone is taper, thereby has only its outer rim to contact with above-mentioned concave bottom.

3, button as claimed in claim 1 is characterized in that: described the 3rd zone is flat basically.

4, button as claimed in claim 1, wherein said second area be towards the depression end the middle part certain tapering is arranged.

5, as arbitrary described button in the claim 1 to 4, the circumference of wherein said depression be circle or rectangle.

6, as arbitrary described button in the claim 1 to 4, wherein said depression forms recess by at least two walls that are parallel to each other.

7, button as claimed in claim 1, wherein said first contact member comprises the pair of conductive track, and above-mentioned second contact member comprises a bridge-type contact that is connected across on the above-mentioned pair of conductive track.

8, button as claimed in claim 6, above-mentioned bridge-type contact is to be formed by the rubber that conducts electricity.