CN86100121A - The rectangle contact carrier that is used for keyboard - Google Patents

The rectangle contact carrier that is used for keyboard Download PDF

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Publication number
CN86100121A
CN86100121A CN198686100121A CN86100121A CN86100121A CN 86100121 A CN86100121 A CN 86100121A CN 198686100121 A CN198686100121 A CN 198686100121A CN 86100121 A CN86100121 A CN 86100121A CN 86100121 A CN86100121 A CN 86100121A
Authority
CN
China
Prior art keywords
contact
lead
carrier
contact area
contact carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN198686100121A
Other languages
Chinese (zh)
Inventor
莱因霍尔德·海斯
鲁道夫·瓦赫特勒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of CN86100121A publication Critical patent/CN86100121A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/785—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/03—Composite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/002—Screen printing

Landscapes

  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)
  • Contacts (AREA)

Abstract

Be used to have the rectangle contact carrier (1) of independent key board, the contact area (2) that constitutes by the contact lead (3) (4) of relative arrangement.The contact lead (3) and (4) that constitute contact point should arrange like this, make contact carrier (1) that the employing method for printing screen produces and under certain machining tolerance condition, it is minimum that percent defective reaches.The way that realizes is to make contact lead (3) and (4) of introducing from the edge of contact carrier (1) press 45 direction layout abreast in contact area.Contact lead (3), (4) distance in contact area is strengthened, and do not need to change the size of contact area (2).

Description

The rectangle contact carrier that is used for keyboard
The present invention includes a rectangle contact carrier that is used in the keyboard, align with each button, the contact zone is made of contact lead opposite one another, wherein, contact lead (silk screen printing) when printing printed circuit is isolated mutually by air gap, plate silver layer, and then brush graphite linings it is covered fully.
The present available silk screen printing circuit methods of the contact carrier of this membrane switch type is made.But in making a problem is arranged, lead and the contact position that occurs with the silver layer form must prevent to contact with sulfurous gas exactly.This problem is to adopt contact lead and the whole one deck graphite that cover of contact position are solved.
Normally the contact position of contact lead and contact zone is arranged along the direction parallel with rectangle carrier one side.For the contact resistance that makes contact is as far as possible littler, just should make the distance between the contact lead in the contact site scope as far as possible little.When producing contact carrier with silk screen printing, because process velocity is fast, will produce another problem, exactly when minor shifts occurring between contact lead and the graphite cover layer, because the machining tolerance on work flow direction or vertical direction, the airtight coverage effect of necessity on the contact lead in the contact area is guaranteed, thereby very high percent defective may occur.
The present invention seeks to the geometrical arrangements that constitutes the contact lead of contact point is adjusted, so that under the machining tolerance condition that reality occurs, reduce percent defective greatly.
This purpose is achieved in that the contact wire of promptly introducing from contact carrier one side is arranged in parallel in contact area by diagonal, preferably is arranged to 45.
Become this form by the contact conductor arrangement that will constitute contact point, compare with now used contact form with contact carrier parallels on one side, do not need to strengthen the overall dimension of contact carrier or each contact area, every contact lead is strengthened to the distance between the air gap 2 Coefficient.Utilize the arrangement of this contact lead, can allow machining tolerance no matter on work flow direction or vertical direction, can change in a wider context, and be unlikely the increase percent defective.
The present invention can illustrate with following legend:
Fig. 1 is the vertical view of a contact area
Fig. 2 is the cutaway view of section II-II on the contact area
Fig. 3 is the partial view of contact area among Fig. 1.
On the used rectangle contact carrier (1) of keyboard the corresponding contact area of many and single button (2) is arranged.Corresponding each button all has contact lead (3) and (4) on each contact area, is separated by air gap (5) between them.
The contact carrier of membrane switch type (1) adopts the silk screen printing circuit methods to make usually, at first will print on the carrier (1) with silver-coating method as the contact lead of conductor.In order to prevent the contact lead owing to sulfurous gas is subjected to infection, seal all covering one deck graphite on the contact lead, so just formed contact surface (8) and (9).In the scope of contact surface (8) and (9), constitute contact lead (2) and (3) of contact point, also have another protective layer, promptly be coated with protective paint (7) and realize by the surface.Protective paint is coated in contact carrier (1) and goes up in the zone in the circle outside that constitutes with empty line.
Contact action utilizes the overlap joint of a unillustrated silicon rubber contact chip between contact surface (8) and (9) to realize herein.
Keep best distance between contact lead and the air gap in order to make, pressing certain angle with interior contact lead (3) and (4) by the contact area (2) of button operation, promptly be preferably 45 ° and be arranged in parallel, its angle is the angle that the edge constituted corresponding to rectangle contact carrier (1).Compare with the contact lead that is parallel to edge placement, the oblique angle is furnished with following advantage: can be so that distance (6) increasing between contact lead (3) and the air gap (5) 2 Coefficient.Like this, when printing contact carrier (1) with method for printing screen, the machining tolerance of appearance is easy to be compensated, because the tolerance surplus is bigger in this case.
Chart:
1, contact carrier 2, contact area 3,4 contact leads
5, air gap 6, spacing 7, protective paint 8,9, contact surface

Claims (1)

  1. The used contact area (2) that constitutes with contact lead (3) corresponding rectangle contact carrier of each button (1) and relative arrangement, (4) of a kind of keyboard, when silk screen printing is silver-plated, separate between contact lead (3), (4) by air gap, and cover at last with equadag coating, it is characterized in that from contact lead (3), (4) of the side introducing of contact carrier (1), be arranged in parallel in contact area (2) by diagonal, preferably press 45 and arrange.
CN198686100121A 1985-02-28 1986-01-10 The rectangle contact carrier that is used for keyboard Pending CN86100121A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3507120.6 1985-02-28
DE3507120 1985-02-28

Publications (1)

Publication Number Publication Date
CN86100121A true CN86100121A (en) 1986-08-27

Family

ID=6263814

Family Applications (1)

Application Number Title Priority Date Filing Date
CN198686100121A Pending CN86100121A (en) 1985-02-28 1986-01-10 The rectangle contact carrier that is used for keyboard

Country Status (9)

Country Link
EP (1) EP0193173A3 (en)
JP (1) JPS61253726A (en)
CN (1) CN86100121A (en)
AU (1) AU5413786A (en)
BR (1) BR8600830A (en)
DE (1) DE8505750U1 (en)
FI (1) FI860849A (en)
IN (1) IN161915B (en)
ZA (1) ZA861463B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623293C2 (en) * 1986-07-10 1995-09-07 Hagen Uwe Multi-part flat electrode, especially for HF surgery
DE3714316A1 (en) * 1987-04-29 1988-11-10 Siemens Ag Contact mat for keys and keyboards
JP2003205072A (en) * 2002-01-11 2003-07-22 Fuji Shoji:Kk Slot machine
JP6992267B2 (en) * 2017-03-24 2022-01-13 ヤマハ株式会社 Switching equipment for keyboard equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676607A (en) * 1969-11-25 1972-07-11 Bell Telephone Labor Inc Pushbutton telephone dial
US3653038A (en) * 1970-02-20 1972-03-28 United Bank Of Denver National Capacitive electric signal device and keyboard using said device
US4243852A (en) * 1979-04-16 1981-01-06 Oak Industries Inc. Membrane switch with means for impeding silver migration
GB2076193B (en) * 1980-05-15 1983-06-08 Standard Telephones Cables Ltd Keyboards
US4440990A (en) * 1982-05-19 1984-04-03 Smk Electronics Corporation, Usa Membrane keyboard assembly
US4458969A (en) * 1982-12-06 1984-07-10 Dorman-Bogdonoff Corporation Membrane switch with means for preventing silver migration

Also Published As

Publication number Publication date
JPS61253726A (en) 1986-11-11
ZA861463B (en) 1986-10-29
BR8600830A (en) 1986-11-11
DE8505750U1 (en) 1986-08-21
EP0193173A2 (en) 1986-09-03
FI860849A0 (en) 1986-02-27
EP0193173A3 (en) 1988-11-30
FI860849A (en) 1986-08-29
AU5413786A (en) 1986-09-04
IN161915B (en) 1988-02-27

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication