KR20080113551A - Structure of slit metal dome switch - Google Patents

Structure of slit metal dome switch Download PDF

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Publication number
KR20080113551A
KR20080113551A KR1020070062156A KR20070062156A KR20080113551A KR 20080113551 A KR20080113551 A KR 20080113551A KR 1020070062156 A KR1020070062156 A KR 1020070062156A KR 20070062156 A KR20070062156 A KR 20070062156A KR 20080113551 A KR20080113551 A KR 20080113551A
Authority
KR
South Korea
Prior art keywords
metal dome
slit
ground
dome switch
reliability
Prior art date
Application number
KR1020070062156A
Other languages
Korean (ko)
Inventor
최경미
Original Assignee
최경미
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 최경미 filed Critical 최경미
Priority to KR1020070062156A priority Critical patent/KR20080113551A/en
Publication of KR20080113551A publication Critical patent/KR20080113551A/en

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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
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • 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
    • H01H13/705—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 characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • H01H13/807—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 spatial arrangement of the contact sites, e.g. superimposed sites
    • 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
    • H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards

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  • Push-Button Switches (AREA)

Abstract

A structure of slit metal dome switch is provided to improve the reliability of the ground by including single or a plurality of the ground, so increasing productivity and usability. At inside ground of the metal dome, a metal dome has a plurality of grounds which are protruded by press slit bending processing. The inner protrusion made through the press slit banding having a V or U-shaped are formed at the contacting portion in the inner side. The contacting portion is formed with the slit bending operation, so it has a sharp cross section.

Description

Slit metal dome switch structure {STRUCTURE OF SLIT METAL DOME SWITCH}

   Figure 1a is a typical circular metal dome without a specific contact method of the contact portion

   FIG. 1B is a cross-sectional view taken along the line A-A 'of FIG. 1A

   Figure 2a is a metal dome diagram of a method of increasing the grounding rate by processing the dimple with a press on the contact portion

   FIG. 2B is a cross-sectional view taken along line B-B 'of FIG. 2A

   Figure 3a is a patent for processing a slit (slit) by pressing the contact portion to increase the ground reliability

   Slit Metal Dome Drawing

   FIG. 3B is a cross-sectional view taken along the line C-C 'to the center of FIG. 3A.

   FIG. 3C is a cross-sectional view taken along the line C-C 'to the outside of FIG. 3A.

   4 is a diagram of multiple slits having three slits

   5 is a diagram of multiple slits with four slits

   *** Explanation of symbols for main parts of drawing

   10: metal dome body

   21: dimple 22: dimple ground portion

   31: slit 32, 33: slit ground

  The present invention is assembled between the key button and the PCB (PCB) of various communication and electronic devices

  Metal dome is a technology designed to improve the grounding reliability of the contact portion.

  1 is a conventional circular metal dome method for a conventional grounding reliability

  There is no additional structure and FIGS. 2A and 2B show that the contact portion is dimpled

  The ground reliability is increased.

  Figure 2 is a key button by forming a projection by embossing the contact portion in the press mold

  It is a structure that can increase the ground reliability when pressed. But this structure is also a metal dome

  Do not completely prevent defects caused by fine dust inside or foreign matter on the PCB surface.

  I couldn't. Therefore, the present invention is designed to reduce such defective rate.

  Single or multiple slitting or slit bending with contacts inside the metal dome

  This can solve the conventional problem.

Slit banding is in contact with metal domes in a manner commonly used in press working.

It is to. The height due to slit banding increases the protruding height between 0.005 ~ 0.1mm

It is ideal to adjust.

  The present invention solves this poor grounding of the metal dome switch of various communication device terminals

  Single or multiple press slit banding 31 on the inner surface of the metal dome

  The metal dome switch of the mobile communication terminal formed by forming contact parts 32 and 33 inside

  It's about structure. Ie through V-shaped U-shaped press slit banding

  The inner protrusions form contact portions 32 and 33 on the inner side.

   Durability and grounding of the metal dome switch is that the number of the slit bending 31 is formed 3 to 4

   Reliability will be guaranteed optimally.

   Single or multiple presses on the inner side of the spherical metal dome switch as shown

   Slit banding (31) through processing to improve the contact reliability of the metal dome grounding

   Forming. This contact part is a slit bending (31) operation that is a press working method

   Formed so that the contact portion has a sharp cut surface. Multiple contacts with this feature

   The foreign material layer formed on the PCB surface or foreign matters during assembly or use

   The reliability of the ground can be improved.

   In addition, one of the other features is the slit (slit) work, the internal space is reduced when the metal dome is operating

   It helps air outflow as it gets smaller and at the same time acts as an air vent

   There are features that can be.

  The examples in the accompanying figures are based on a round dome switch and similar examples

  Slit formed in the DR dome switch of the cut type in both directions

  Banding contacts are also included within the scope of the claims.

  The present invention described above is not limited thereto as one preferred embodiment

  Those skilled in the art to which the present invention belongs

  Not only can modification be carried out, but such modification is a key element of the present invention.

  Will exist within the scope of the claims.

  The present invention increases the reliability of the ground by having a single or a plurality of contact parts

  Metal dome of various communication and electronic devices to improve productivity and usability

  to provide

Claims (2)

 Single or multiple press slit bending process on the inner surface of the metal dome  Extruded Metal Dome  The method according to claim 1, wherein the number of slit bending processes is optimal on the inner surface of the metal dome.  Metal dome, characterized in that three to five formed
KR1020070062156A 2007-06-25 2007-06-25 Structure of slit metal dome switch KR20080113551A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070062156A KR20080113551A (en) 2007-06-25 2007-06-25 Structure of slit metal dome switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070062156A KR20080113551A (en) 2007-06-25 2007-06-25 Structure of slit metal dome switch

Publications (1)

Publication Number Publication Date
KR20080113551A true KR20080113551A (en) 2008-12-31

Family

ID=40370782

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070062156A KR20080113551A (en) 2007-06-25 2007-06-25 Structure of slit metal dome switch

Country Status (1)

Country Link
KR (1) KR20080113551A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190109847A (en) * 2018-03-19 2019-09-27 엘지전자 주식회사 Key module and mobile terminal having the same, and method for assembling the key module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190109847A (en) * 2018-03-19 2019-09-27 엘지전자 주식회사 Key module and mobile terminal having the same, and method for assembling the key module

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