WO2016155672A1 - 一种采用超薄超小金属剪刀脚的键开关装置 - Google Patents

一种采用超薄超小金属剪刀脚的键开关装置 Download PDF

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Publication number
WO2016155672A1
WO2016155672A1 PCT/CN2016/078410 CN2016078410W WO2016155672A1 WO 2016155672 A1 WO2016155672 A1 WO 2016155672A1 CN 2016078410 W CN2016078410 W CN 2016078410W WO 2016155672 A1 WO2016155672 A1 WO 2016155672A1
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WIPO (PCT)
Prior art keywords
scissors
scissor
metal
key
foot
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PCT/CN2016/078410
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English (en)
French (fr)
Inventor
陈�峰
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陈�峰
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Publication date
Application filed by 陈�峰 filed Critical 陈�峰
Priority to CN201680020655.2A priority Critical patent/CN109314007B/zh
Publication of WO2016155672A1 publication Critical patent/WO2016155672A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12—Push-buttons
    • 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
    • H01H13/702—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
    • H01H13/7065—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 characterised by the mechanism between keys and layered keyboards

Definitions

  • the present invention relates to a key switch device that performs a keystroke operation, and more particularly to a key switch device that is loaded in a keyboard as an input device of an electronic instrument.
  • the invention also relates to a keyboard provided with a plurality of such key switch devices.
  • a thin type that is, a low-height type keyboard mounted in a portable electronic device such as a notebook type or a palm-sized computer
  • the key switch device that requires the hitting operation is lowered in height, and the operability is improved, that is, the hand feels good--- --.
  • a thin plastic X support structure device is generally used in a portable electronic device such as a notebook or a palmtop computer.
  • the key structure device of the prior keyboard includes a key cap 1, and the reset component is a resilient rubber elastic ring (
  • the resetting element can also be a spring, a magnetic element, etc., a switch circuit 12 having a switch capable of opening and closing, a support plate 15 having a mating portion, and a scissor foot 16 having an upper and lower mating portion, and the scissor foot 16 is respectively coupled to the upper and lower mating portions.
  • the mating portions of the keycap 1 and the support plate 15 are rotated or slidably connected, and the scissor-like legs 16 which are X-shaped from the side view form a synchronous linkage support structure by the mutual force transmission between the middle portions to ensure that the key cap 1 is parallel to the support plate. 15 lifting movements.
  • the engaging portion of the supporting plate 15 is composed of a supporting plate rotating portion 13 and a supporting plate sliding portion 14, and the scissor legs 16 (both produced by plastic) are composed of a right scissor foot 4 and an outer scissor foot 8.
  • the upper and lower fitting portions of the scissor foot 16 are respectively The lower hinge shaft 9, the lower shaft 7 and the upper rotating portion 10 of the scissors, and the upper slide portion 6 of the scissors, the synchronous linkage supporting structure is composed of the central shaft 5 on the right scissor base 4 and the outer frame pivot hole 5c on the plastic outer scissor foot 8. Hinged construction.
  • the device is hinged by a central shaft 5 on the right scissor foot 4 made of plastic and a central hole on the outer scissor foot 8 made of plastic, and the lower hinge shaft 9 and the lower shaft 7 are respectively rotated with the support plate on the support plate 15. 13 and the strut sliding portion 14 are in a rotational fit and a sliding fit.
  • the scissors upper rotating portion 10 and the scissor upper sliding portion 6 are slidably engaged with the keycap sliding portion 3 and the key cap rotating portion 2 of the keycap 1, respectively.
  • the metal inner scissor foot 28, and the metal outer scissor foot 31 have a width bending edge 24 perpendicular to the longitudinal direction of the scissor foot arm 23, a metal inner scissor foot 28, and a metal outer scissor foot 31.
  • the lower plane 17 of the scissors and the upper plane 19 of the scissors are connected by the width bending edge, and the lower plane 17 of the scissors is located under the metal inner scissors foot 28 and the metal outer scissors foot 31.
  • the upper plane 19 of the scissors is located in the metal inner scissors foot 28 and the metal. Above the outer scissors foot 31.
  • the left and right sides of the metal inner scissors foot 28 have an inner shear extension surface 25 extending upward from the lower plane 17 of the scissors, and the inner shear extension surface 25 is located beside the scissors foot arm 23, and the inner shear extension board
  • the corner of the cantilever end of the face 25 has a corner support mating portion 18.
  • the inner side of the outer metal scissor leg 31 has an inner shear extending plate surface 25 extending upward from the lower plane 17 of the scissors, and the inner shear extending surface 25 is located beside the scissor arm 23, and the inner shear extending plate surface 25
  • the corner of the cantilever end has a corner support fitting portion 18.
  • the metal inner scissor foot 28 and the metal outer scissor foot 31 are respectively rotated or slidably connected with the key cap 1 (not shown) and the support plate 15; the corner supporting support portion 18 and the scissor foot of the inner scissor foot 28
  • the lower plate surface of the arm 23 and the lower plate surface of the scissor foot arm 23 of the metal outer scissor foot 31 and the corner support fitting portion 18 respectively support each other to form a synchronous force supporting structure to ensure that the key cap is parallel to The support plate is used for lifting movement.
  • the metal inner scissor foot 28 and the metal outer scissor foot 31 are both bent at a width perpendicular to the longitudinal direction of the scissor arm 23;
  • the metal scissor foot structure is not compact and the rigidity is not good.
  • the aluminum alloy with 0.3mm thick or more or 0.2mm steel plate can meet the requirements.
  • the metal scissor foot (0.3mm thick aluminum alloy scissor foot weight is 0.098g) More than 60% of the weight of existing plastic scissor feet (weight about 0.06g).
  • the area with the worst structural rigidity of the metal scissor is near the width of the bent side 24, in order to improve the structural rigidity of the metal scissor foot, the width of the two scissors arms of the metal scissors foot is designed to be 1.9 mm, and the length and width of the metal scissor feet are The size cannot be reduced.
  • the position structure has poor elasticity, low strength, small interference of the limit position, and the thinner and thinner the notebook keyboard, the two short and thick plastic elastic limit structures (H1 size) of the key cap rotating part 2 limit the low keycap 1
  • the height is designed.
  • the two short and thick plastic elastic limit structure molds of the key cap rotating portion 2 need to be inclined and pulled out, etc., resulting in two short and thick plastic elasticities of the key cap rotating portion 2.
  • the limit structure has a high rate of defective products.
  • the keycap 1 of the notebook keyboard is very prominent after leaving the factory.
  • the problem of the falling off of the notebook keyboard and the failure of the switch contacts are the two most urgent problems to be solved in the current notebook keyboard.
  • the plastic elastic limit structure of the keycap 1 of the notebook keyboard has the influence of injection molding defects.
  • the short-and-thick plastic elastic limit structure of the key top of the notebook keyboard 1 has a interference of unilateral 0.15mm. When the interference is too small, the key phenomenon is easy to occur; when the interference is excessive When it is large, two pieces of short and thick plastic elastic limit structure of the key cap rotating portion 2 are liable to breakage failure and the hidden failure of the buried fracture.
  • the injection molding precision is lower than the stamping precision of the thin plate, precision injection molding - the tolerance of the small-sized structural injection molded parts is 0.08mm, the linear size stamping---the punching precision of the thin plate is 0.026mm, and the punching and bending precision of the thin plate is 0.5 degree.
  • Question 3 Referring to Figure 3-1, the key upright limiter 3a of the keycap 1 and the key reverse fit face 3c are integral, the key fit plane 3b is a part of the concave bottom surface of the keycap, and the key reverse fit face 3c and The key corresponds to the position of the plane 3b.
  • the existing metal scissor foot 16 formed by sheet metal is formed on a plate surface of 0.25 mm-0.7 mm thick, and the upper fitting portion and the lower fitting portion of the metal scissor foot 16 are respectively
  • the upper punching projection 17d and the lower punching projection 17a are located at the upper end and the lower end of the scissor foot arm, and the upper punching projection 17d and the lower punching projection 17a are formed by punching and forming a boss having a square cross section.
  • the upper punching projection 17d and the lower punching projection 17a can punch the chamfering deburring (the chamfer can be inverted into a straight surface, or can be an arc surface or an inverted circular surface), and the metal scissors foot 16 is inside.
  • the metal scissor foot 4 and the outer metal scissor foot 8 are composed.
  • the cantilever end of the extension plate surface 17C has a stamped and formed cantilever arc 18, and the punched cantilever arc 18 is located near the lower plate surface of the scissors arm and located near the middle of the length of the scissors arm, and the upper support surface 17b is located under the scissors arm Near the middle of the board is a part of the lower deck of the scissor arm of the straight board.
  • the key structure device of the metal scissor foot 16 includes a key cap 1 (not shown), an elastic body 11 (not shown), a switch circuit 12 having a switch contact, a support plate 15 having a fitting portion, and an upper and lower fitting portion.
  • the metal scissor foot 16, the corner portion of the upper punching projection 17d of the metal scissor foot 16 and the corner portion of the lower punching projection 17a are respectively rotated or slidably connected with the mating portion of the keycap 1 and the mating portion of the support plate 15.
  • the scissor upper support surface 17b of one of the metal scissor feet 16 and the punched cantilever arc 18 and the punching cantilever arc 18 of the other metal scissor foot 16 and the upper support surface 17b of the scissors support each other, and the mutual force transmission between the middle portions forms a synchronous linkage.
  • the support structure ensures that the keycap 1 moves up and down parallel to the support plate 15.
  • the keycap 1 When the keycap 1 is pressed, the keycap 1 overcomes the elastic force of the elastic body 11 (not shown) and pushes the upper fitting portion of the inner metal scissor foot 4 and the outer metal scissor foot 8 along the key cap 1, and the inner metal scissors
  • the lower fitting portion of the foot 4 and the outer metal scissor foot 8 rotates or moves along the mating portion of the support plate 15, while the punching cantilever arc 18 slides along the upper support surface 17b of the scissors;
  • the key cap 1 moves downward to the bottom surface of the keycap 1 and has
  • the switch circuit 12 of the switch contact contacts the lower limit position, the boss in the elastic body 11 (not shown) triggers the switch circuit on the switch circuit 12 with the switch contact (not shown in the figure).
  • the keycap 1 When the external force of the keycap 1 is removed, the keycap 1 is reset to the upper limit position by the elastic force of the elastic body 11 (not shown).
  • the commonly used plastic scissor foot 16 Compared with the sheet metal scissor foot 16, the commonly used plastic scissor foot 16 has poor strength, poor rigidity and poor precision, and there are injection molding defects in the injection molding production, and the keyboard can not be further lowered in height, and the structure of the scissor foot 16 is difficult to realize. Automated installation, etc. At the same time, the production efficiency of the scissors foot 16 is much lower than that of the stepping die.
  • the stepping die is also called the high speed die, which has high efficiency, high life and high precision. It is called the modern three high mold.
  • the replacement of the commonly used plastic scissors feet 16 by the sheet metal scissors foot 16 is an irresistible trend.
  • the sheet metal scissor foot 16 has the advantages of high strength, high rigidity, high production efficiency, and low production equipment cost.
  • the existing sheet metal scissors feet 16 have the following problems:
  • the fitting portion and the lower fitting portion of the scissor foot 16 are formed by punching a sheet metal formed into a square shape, and the corner portions of the boss having a square cross section are respectively engaged with the engaging portions of the key cap and the support plate, and the key cap
  • the corner of the boss of the matching portion of the scissoring foot 16 of the first portion accelerates the wear of the key cap and the support plate, resulting in a rapid loss of precision of the scissor foot 16, the key cap, and the support plate.
  • the corner of the boss with a square cross section is chamfered----can be inverted into a straight surface, a circular arc surface, or an inverted circular surface.
  • the chamfering process of the sheet metal is difficult (especially with a thinner When the metal plate is used, there is a poor chamfering accuracy and a poor surface finish.
  • the scissors foot 16 is made of a thin metal plate (such as a metal plate of 0.08mm---0.15mm), the scissors slides up.
  • the space between the key reverse matching surface 3c and the key fitting plane 3b of the movable portion 6 cannot be injection-molded (see FIG. 1 - FIG. 5, the key reverse-fitting surface 3c corresponds to the position of the key fitting plane 3b), and the height of the space
  • the injection mold adopts a 0.08mm---0.15mm alloy sheet core, which is neither processed nor strong.
  • the fitting portion of the scissors foot 16 cannot be rounded up too much, and the currently popular keycap mounting method cannot be used, and the installation method of the currently popular scissors foot 16 cannot be used.
  • the existing sheet metal scissor foot 16 adopts a plate thickness of 0.4 mm or more, and the material cost is high, which affects the further lowering of the keyboard (the two existing sheet metal scissor legs 16 are stacked up to 0.8 mm thick).
  • the object of the present invention is to provide a metal scissor foot with an ultra-thin thickness, an ultra-light weight, and to overcome the problem of the existing keyboard drop-off problem and to solve the problem of the boss matching portion of the existing metal scissor foot.
  • the cap wears out quickly.
  • the technical solution of the present invention is realized by the following steps: including a key cap, a resetting element, a switch circuit having a switch, a support plate having a matching portion, and a scissor foot having an upper and lower matching portion, and the scissor foot is respectively supported by the upper and lower fitting portions with the key cap and the support
  • the mating portions of the plates are rotated or slidably connected, and the scissors feet form a synchronous linkage support structure by mutual force transmission to ensure that the key caps move up and down parallel to the support plate, and the metal scissor feet are on the metal plate surface.
  • the metal scissor foot is formed with an elastic sheet metal elastic plate surface 20; the metal scissor foot has a stamping and forming scissors anti-off structure; and the key cap 1 is provided with a key limiting boss 48; The mutually supported metal scissor feet are engaged with the key limit boss 48 of the key cap 1 through the scissors anti-off structure, preventing the key from coming out or limiting the key cap 1 to the upper limit position; the metal scissor foot is made of metal inner scissor foot 28.
  • the outer metal scissor leg 31 is formed.
  • the lower plane 17 of the scissors of the metal inner scissor foot 28 is located outside the upper plane 19 of the scissors, and the lower plane 17 of the outer scissors foot 31 of the metal is respectively placed on the scissors.
  • the lower scissors plane 17 and the upper plane 19 of the scissors are connected by a length folding edge 36 which is along the length of the scissors foot arm 23; the length of the metal outer scissors foot 31 is folded
  • the distance L1 between the upper end surface 42 and the middle transverse end surface 40 of the upper plane 19 of the scissors ⁇ the distance L between the end faces of the bending edge 36 of the length of the metal inner scissors foot 28, and the key cap 1 when the key cap is mounted
  • the mating portion and the key limiting boss 48 force the sheet metal elastic plate surface 20 to be elastically deformed, and the scissors retaining structure passes over the key limiting boss 48 into the mating space of the mating portion of the key cap 1, under the action of the restoring force of the resetting member
  • the scissors retaining structure is pressed against the key limit boss 48 of the keycap 1, and the
  • the utility model comprises a key cap, a resetting component, a switch circuit with a switch, a support plate with a matching portion, and a scissor foot having an upper and lower matching portion, and the scissor foot is respectively rotated or slidably connected with the matching portion of the key cap and the support plate through the upper and lower fitting portions, the scissors Feet through each other
  • the transmission of the force constitutes a synchronous linkage support structure to ensure that the keycap is parallel to the support plate for lifting movement, and the metal scissor foot is stamped and formed on the metal plate surface; the metal scissor foot is formed with elasticity a sheet metal elastic plate surface 20; the metal scissor foot has a stamping and forming anti-off structure;
  • the key cap 1 is provided with a key limiting boss 48; the mutually supported metal scissor feet are separated by a scissors structure and a key
  • the key limiting boss 48 of the cap 1 is limitedly engaged to prevent the key from coming out or to limit the keycap
  • the scissor retaining structure is pressed against the key limit of the key cap 1
  • the key cap 1 is restricted to the upper limit position
  • the metal scissor foot is rotated or slidably connected to the mating portion of the key cap through the thickness dimension between the upper end upper surface 56 of the scissors and the lower upper surface 57 of the scissors
  • the lower plane of the scissors of the metal inner scissors foot 28 7 is located on the outer side of the upper plane 19 of the scissors, the lower plane 17 of the scissors of the outer metal scissor 31 is respectively located on the inner side of the upper plane 19 of the scissors, and the lower plane of the scissors 17 and the upper plane 19 of the scissors are connected by the length folding edge 36.
  • the length bending edge 36 is along the length direction of the scissors foot arm 23; the distance between the upper end surface 42 of the metal outer scissors foot 31 and the middle transverse end surface 40 of the upper plane 19 of the scissors is ⁇ the metal inner scissors The length of the foot 28 is the distance L between the ends of the folded side 36.
  • the utility model comprises a key cap, an elastic body, a switch circuit with a switch contact, a support plate with a matching portion, and a scissors foot having an upper and lower matching portion, and the scissors feet are respectively connected with the matching portions of the key cap and the support plate through the upper and lower fitting portions, one of which The lower plate surface of the upper surface of the scissors 19 of the scissor foot and the end of the lower shear plane 17 of the other scissor foot support each other, and the mutual force transmission constitutes a synchronous linkage support structure to ensure that the key cap is lifted parallel to the support plate.
  • the lower plane 17 of the scissors of the metal inner scissors foot 28 is located outside the upper plane 19 of the scissors, and the lower plane 17 of the scissors of the metal outer scissors feet 31 are respectively located inside the upper plane 19 of the scissors, the scissors
  • the lower plane 17 and the upper plane 19 of the scissors are connected by a length-bending edge 36 along the length direction of the scissor-leg 23; the length of the outer metal scissor 31 is folded over the upper end surface 42 and the upper plane of the scissors
  • the distance L1 between the intermediate lateral end faces 40 of 19 is ⁇ the distance L between the end faces of the bent side 36 of the length of the metal inner scissor leg 28.
  • the reset element is an elastic body
  • the switch circuit having the switch is a switch circuit having a switch contact.
  • the inner edge of the upper surface of the upper surface of the upper surface of the upper surface of the scissors 19 of the metal scissor has a scissor inner rib, and the inner rib of the scissor is reinforced by a metal outer scissor 31 and a metal inner scissor 39
  • the inner I reinforcement flange 35 of 28 is constructed.
  • an outer reinforcing flange 44 is provided on the edges of the left and right sides of the upper plane 19 of the scissors of the metal outer scissor foot 31.
  • the lower scissors plane 17 of the metal scissor foot and the upper plane 19 of the scissors also pass through the width bending surface 38.
  • the lower scissors planes 17 of the metal inner scissor legs 28 are respectively located on the outer side of the length bend side 36 and the lower side of the width bend surface 38, and the lower scissors planes 17 of the metal outer scissor feet 31 are respectively located at the length bend.
  • the inner side of the side 36 and the lower side of the width bending surface 38, the lower scissors planes 17 of the metal scissor feet are all connected as one integral surface.
  • the metal scissor foot has a sheet metal elastic plate surface 20, and a sheet metal cantilever stopper 21 formed by stamping on the cantilever end of the sheet metal elastic plate surface 20, the scissors anti-drop structure is made of a sheet metal cantilever
  • the limit position 21 is configured, and the sheet metal cantilever limiter 21 is engaged with the key limit boss 48.
  • the lower end of the scissors is formed on the lower side of the scissors, and the lower end surface 59 of the scissors is located at the lower surface of the bent portion of the lower end of the scissors 26, under the lower end of the scissors.
  • the lower surface 59 of the lower end of the scissors having a circular arc surface is engaged with the plane of the support plate 15 or the upper surface of the switch circuit 12 having the switch contacts, and the lower support portion 59 of the scissors is the lower part of the metal scissors. Arc surface.
  • the thickness dimension between the upper surface of the upper surface of the scissors of the metal scissor foot and the upper surface 57 of the upper end of the scissors of the metal scissor is rotated or slidably connected with the engaging portion of the key cap, and the engaging portion of the key cap 1 is inverted by the key.
  • the buckle arc surface 46, the key boss shoulder 45, and the key anti-drop structure are formed.
  • the upper end upper surface 56 of the scissors and the lower upper surface 57 of the scissors are all planar, and the upper upper surface 56 of the scissors and the lower upper surface 57 of the upper scissors respectively It is slidably engaged with the key boss shoulder 45 and the key reverse curved surface 46.
  • the lower plane 17 of the scissors is a whole, and the inner scissors support portion 18 and the outer scissors support portion 30 are respectively located at the corner of the upper end of the lower plane 17 of the scissors and the corner of the cantilever end surface of the end surface extension plate surface 41.
  • the lower plate surface and the inner plate support portion 18 are supported by the lower plate surfaces of the upper surface 19 of the scissors to form a synchronous interlocking support structure.
  • the inner inner scissor foot 28 and the length upper bending end 36 of the scissor upper surface 19 are provided with an inner scissor seating space 34.
  • the key cap is at the lower limit, the The middle transverse end face 40 of the upper surface 19 of the scissors of the metal outer scissor foot 31 enters the inner scissors seating space 34.
  • the inner upper planar lower end surface 33 of the upper shear plane 19 of the metal inner scissor foot 28 is a punched cross section penetrating the plate surface.
  • the length of the metal inner scissor leg 28 is at an acute angle with the length of the scissor arm 23, and the upper surface 19 of the scissor leg 36 is narrowed downward; the length of the outer metal scissor 31 is folded.
  • the flange 36 is at an acute angle to the longitudinal direction of the scissor arm 23, and the upper plane 19 of the scissors outside the length of the flange 36 is narrowed downward.
  • the strength and rigidity of the scissor arm are greatly improved, making it possible to produce scissors feet with thinner metal materials, such as thick 0.15mm aluminum alloy scissors feet can meet the requirements of use.
  • the weight of the scissor foot is reduced to 0.049g. Compared with the existing plastic scissor foot (weight about 0.06g), the weight of the scissor foot is reduced by about 18%. The weight of the scissor foot is reduced by about 78% compared to the width of the scissor edge 24 .
  • the thickness of the scissors feet is thinned, further realizing the low height of the keyboard.
  • the thickness of the scissors feet is thinner, the forming scissors feet are more technical (such as smaller bending radius, smaller bending rebound, etc.) and reduce the material cost of the production of scissors feet.
  • the structure of the scissor foot is more compact, and the length and width of the scissor foot are further reduced, and the keyboard with the key cap size of 14.8*14.8 can be produced.
  • the positive effect of the elastic sheet metal elastic panel 20 is formed by using metal scissor feet:
  • the keycap 1 becomes a maintenance-free fully rigid structure, which greatly reduces the defective rate of the keycap 1 and completely solves the problem of the old key of the existing notebook keyboard.
  • the elastic limit structure of the sheet metal scissors foot has good elasticity and high strength, and can increase the interference of the limit position (up to 0.5mm), so that the reliability of the limit of the key cap and the thin metal scissors foot is high.
  • the elastic limit structure of the sheet metal scissors feet has no injection defects.
  • the low-profile design of the keycap can be further realized.
  • the matching surface of the metal scissor foot 16 and the key cap is separately arranged from the scissor anti-off structure (ie, the scissor anti-off structure is independently set), so that the surface of the mating surface of the metal scissor foot 16 and the key cap is a simple flat shape.
  • the flat plate surface does not need to be processed, and the matching precision and the machining precision are improved (the more the punching times of the sheet metal, the worse the machining precision is, the more the sheet metal plastic deformation is, the more the machining accuracy is worse); the upper and lower sides of the scissors foot 16 are used.
  • the smooth and straight plate surface realizes the surface matching with the key cap and the support plate, thereby greatly improving the matching precision, improving the wear resistance between the parts, and the key switch device is durable.
  • the upper and lower smooth plates of the scissor foot 16 are respectively matched with the surface of the key cap and the support plate, thereby greatly improving the matching precision.
  • the wear resistance between the parts is improved, and the key switch device is durable.
  • the thickness of the scissor foot 16 is doubled, and the key height is further reduced.
  • the matching portion of the key cap is arranged in the width direction of the key by the key reverse matching surface 3c and the key matching plane 3b, that is, the key reverse matching surface 3c is located beside the key matching plane 3b, completely solving the use of the ultra-thin scissors foot.
  • the mating portion of the keycap is incapable of being injection-molded due to the too small spacing between the key-floating mating surface 3c and the key mating plane 3b.
  • the key switch device of the face-matching scissors foot 16 can be widely applied to a computer keyboard, a palmtop computer, various embedded keyboards, and a key switch device for performing a keystroke operation.
  • the invention doubles the material cost of the scissor foot 16, simplifies the stamping process of the scissor foot 16, greatly improves the matching precision of each part, and improves the wear resistance between the parts.
  • Figure 1 is a structural view showing the structure of a conventional plastic scissor foot 16 of a key cap
  • FIG. 2 is a connection diagram of a structural device of a conventional plastic scissor foot 16 of a key cap;
  • Figure 2-1 is a diagram showing the installation process of an existing keycap
  • Figure 2-2 is a diagram showing the installation process of an existing keycap
  • Figure 2-3 is a diagram showing the installation process of an existing key cap
  • Figure 2-4 is a diagram showing the installation process of an existing key cap
  • Figure 2-5 is a diagram showing the installation process of an existing keycap
  • Figure 3-1 is a cross-sectional view of a conventional key device in an upper limit position
  • Figure 3-2 is a cross-sectional view of an existing key device in an upper limit position
  • Figure 3-3 is a cross-sectional view of Figure 3-1 in the lower limit position
  • Figure 3-4 is a cross-sectional view of the lower limit position of Figure 3-2;
  • Figure 3 is a perspective view of a conventional inner scissor leg having a width bent side
  • Figure 4 is a perspective view of a conventional outer scissor leg having a width bent side
  • Figure 5 is an assembled perspective view of Figures 3 and 4;
  • Figure 6 is a perspective view of the scissor foot of the present invention having a length bent parallel to the longitudinal direction of the scissor arm of the present invention
  • Figure 7 is a perspective view of the outer scissors foot of the present invention having a length bent parallel to the longitudinal direction of the scissors arm;
  • Figure 8 is a front elevational view of Figure 6;
  • Figure 9 is a front elevational view of Figure 7;
  • Figure 10 is an assembled perspective view of Figures 8 and 9;
  • Figure 11 is a perspective view of the scissor foot in the length of the bent side of the present invention at an angle to the longitudinal direction of the scissor arm;
  • Figure 12 is a perspective view of the outer scissors foot of the present invention having a length bent at an angle to the longitudinal direction of the scissors arm;
  • Figure 13 is a front elevational view of Figure 11;
  • Figure 14 is a front elevational view of Figure 12;
  • Figure 15 is an assembled perspective view of Figures 11 and 12:
  • Figure 16a is a perspective view of the inner scissor leg of the present invention having a width bend side and a length bend side;
  • Figure 16b is a perspective view of the outer scissor leg of the present invention having a width bend side and a length bend side;
  • Figure 16 is an assembled perspective view of another embodiment of the present invention.
  • Figure 17a is a perspective view of a rigid keycap of the present invention.
  • Figure 17 is a cross-sectional view of the key mounting process
  • Figure 18 is a cross-sectional view of the key mounting process
  • Figure 19 is a cross-sectional view of the key mounting process
  • Figure 20 is a cross-sectional view of the key mounting process
  • Figure 21 is a cross-sectional view of the key mounting process
  • Figure 22 is a cross-sectional view of the key mounting process
  • Figure 23 is a cross-sectional view at the end of the key installation
  • Figure 24 is a cross-sectional view at the end of the key installation
  • Figure 25 is a cross-sectional view at the end of the key installation
  • Figure 26 is a cross-sectional view at the end of the key installation
  • Figure 27 is a perspective view of an inner scissor leg of the present invention.
  • Figure 28 is a perspective view of an outer scissor leg of the present invention.
  • Figure 29 is a sheet metal outer scissor leg extending to the left of the sheet metal elastic plate surface 20 of the present invention.
  • Figure 30 is a sheet metal inner scissor leg extending to the left of the sheet metal elastic plate surface 20 of the present invention
  • Figure 31 is a sheet metal outer scissor of the sheet metal elastic plate surface 20 of the present invention.
  • Figure 32 is a sheet metal inner scissor leg of the sheet metal elastic plate surface 20 of the present invention.
  • Figure 33 is a sheet metal outer scissor leg of the sheet metal elastic plate surface 20 of the present invention extending leftward and rightward;
  • Figure 34 is a sheet metal inner scissor leg of the sheet metal elastic plate surface 20 of the present invention extending leftward and rightward;
  • Figure 35 is a side cross-sectional view of the rigid keycap of the present invention.
  • Figure 36 is a perspective view of the rigid keycap of the present invention.
  • Figure 37 is a perspective view of the key device of the scissor-foot assembly of the present invention in an upper limit position
  • Figure 38 is a front elevational view of the key device of the present invention.
  • Figure 39 is a cross-sectional view taken along line D-D of Figure 20;
  • Figure 40 is a cross-sectional view taken along line B-B of Figure 20;
  • Figure 41 is a cross-sectional view taken along line C-C of Figure 20;
  • Figure 42 is a process diagram of the descending of Figure 21;
  • Figure 43 is a process diagram of the descending of Figure 22.
  • the present invention includes a keycap (not shown), a reset element 11, a switch circuit 12 having a switch, a support plate 15 having a mating portion, and a scissor foot having an upper and lower mating portion.
  • the scissor feet 16 are respectively connected to the mating portions of the keycap 1 and the support plate 15 through the upper and lower fitting portions, wherein the lower plate surface of the upper surface 19 of the scissor foot 16 and the lower end of the scissors lower plane 17 of the other scissor foot 16
  • the parts support each other and form a mutual force transmission to form a synchronous linkage support structure to ensure that the key cap moves up and down parallel to the support plate.
  • the reset element of the embodiment is a resilient rubber spring ring (the existing reset element may be The spring, magnetic element, etc.
  • the switch circuit of the present embodiment is a membrane switch circuit having a switch contact.
  • the lower plane 17 of the scissors is a whole, and the metal inner scissor foot 28 and the metal outer scissor foot 31 are respectively rotated or slidably connected with the key cap 1 (not shown) and the support plate 15; the corner supporting support portion of the metal inner scissor foot 28 18.
  • the lower plate surface of the scissor foot arm 23 and the lower plate surface of the scissor foot arm 23 of the metal outer scissor foot 31 and the corner support engaging portion 18 respectively support each other to form a mutual force transmission structure to ensure a synchronous linkage support structure to ensure
  • the key cap moves parallel to the support plate for lifting movement.
  • the metal scissor foot 16 is composed of a metal inner scissor foot 28 and a metal outer scissor foot 31.
  • the metal scissor foot 16 has a lower scissors plane 17, a upper plane 19 of the scissors, and a lower plane 17 of the scissors of the metal inner scissor foot 28 is located.
  • the lower plane 17 of the scissors of the outer metal scissor 31 is located inside or inside the upper plane 19 of the scissors, respectively.
  • the side and lower sides of the scissors, the lower plane of the scissors 17, and the upper plane 19 of the scissors are connected by a length folding edge 36 or by a length bending edge 36 and a width bending surface 38, and the length bending edge 36 is along the length direction of the scissors foot arm 23.
  • the inner edge of the upper surface of the upper surface of the scissors 19 of the metal scissor foot 16 has a scissor inner rib.
  • the inner rib of the scissor is reinforced by a metal outer scissor 31.
  • the inner reinforcing flange 35 of the foot 28 is formed.
  • the metal scissor has a sheet metal elastic plate surface 20, and the sheet metal elastic plate surface 20 is located at an intermediate position of the upper portion of the metal scissor foot, and the cantilever notch through hole 20a of the left and right sides of the sheet metal elastic plate surface 20
  • the upper part of the foot is divided into two parts on the left and the right, and the cantilever end of the sheet metal elastic plate surface 20 has a sheet metal cantilever limit stop 21 formed by bending, and the sheet metal cantilever limit position 21 cooperates with the key cap (not shown) and limits The key cap is released.
  • the length of the metal scissor foot 28 is at an acute angle to the longitudinal direction of the scissor arm 23, and the upper surface 19 of the scissor leg 36 is narrowed downward; the outer metal scissor 31
  • the length of the bent edge 36 is at an acute angle to the longitudinal direction of the scissor foot arm 23, and the upper plane 19 of the scissors outside the length of the bent side 36 is narrowed downward.
  • the lower scissors planes 17 of the scissor legs 28 of Fig. 16a, Fig. 16b are respectively located on the outer side of the length bend side 36 and the lower side of the width bend face 38, and the lower scissors planes 17 of the metal outer scissor feet 31 are respectively located at the length bend side 36.
  • the lower scissors planes 17 of the metal scissor feet are connected as one integral surface.
  • An outer reinforcing flange 44 is provided on the edges of the left and right sides of the upper surface 19 of the scissors on the metal outer scissor foot 31.
  • the inner scissors upper end surface 33 of the upper upper surface of the scissors 19 connected to the length of the curved side 36 has an inner scissors seating space 34.
  • the metal is outside.
  • the middle transverse end face 40 of the upper surface 19 of the scissors of the scissor foot 31 enters the inner scissors seating space 34.
  • the upper and lower end faces of the length of the metal inner scissor foot 28 are inserted into the outer scissors receiving space of the outer metal scissor leg 31.
  • the upper end surface of the metal outer scissor foot 31 has an upper end surface corresponding to the lower end surface position of the metal inner scissor foot 28.
  • the lower scissors plane 17 of the metal scissor foot 16 and the upper plane 19 of the scissors are also connected by a width bending surface 38 as shown in Figs. 7, 9, and 16.
  • the metal scissor foot 16 has a lower plane of the scissors 17, a flat surface 19 of the scissors, the lower plane 17 of the scissors of the metal inner scissor foot 28 is located on the outer side and the lower side of the upper plane 19 of the scissors, and the lower plane 17 of the scissors of the metal outer scissor 31 are respectively located on the upper plane of the scissors.
  • the inner side and the lower side of the 19, the lower plane of the scissors 17, and the upper plane 19 of the scissors are connected by a length folding side 36 and a width bending surface 38. At the intersection of the length bending edge 36 and the width bending surface 38, there is a bending intersection through hole 37.
  • the lower scissors plane of the metal scissor foot and the upper plane 19 of the scissors are also connected by the width bending surface 38.
  • the metal uses the scissor foot of the length bending edge 36: the strength and rigidity of the scissor arm are greatly improved, so that a thinner metal material is used.
  • the production of scissors feet becomes a reality, such as the use of 0.15mm thick aluminum alloy scissors feet to meet the requirements of use.
  • the weight of the scissor foot is reduced to 0.049g. Compared with the existing plastic scissor foot (weight about 0.06g), the weight of the scissor foot is reduced by about 18%. The weight of the scissor foot is reduced by about 78% compared to the width of the scissor edge 24 .
  • the thickness of the scissors feet is thinned, further realizing the low height of the keyboard.
  • the thickness of the scissors feet is thinner, the forming scissors feet are more technical (such as smaller bending radius, smaller bending rebound, etc.) and reduce the material cost of the production of scissors feet.
  • the structure of the scissor foot is more compact, and the length and width of the scissor foot are further reduced, and the keyboard with the key cap size of 14.8*14.8 can be produced.
  • the metal scissor foot is stamped and formed on the metal plate surface; the metal scissor foot is formed with an elastic sheet metal elastic plate surface 20; the metal scissor foot has a stamping and forming scissors anti-off structure; A key limiting boss 48 is disposed thereon; the metal scissor legs supported by each other are engaged with the key limiting boss 48 of the keycap 1 through the scissors retaining structure to prevent the key from coming out or to limit the keycap 1 to the upper limit position.
  • the upper matching portion of the metal scissor foot 16 is composed of a scissor upper end lower plate surface and a scissor upper end upper plate surface, and a separately disposed scissor anti-detachment structure, and the upper upper surface of the scissor and the key on the upper key of the key cap 1 are inverted on the boss The inverted buckle surface 46 fits.
  • a rigid key limiting boss 48 is disposed near the middle of the key concave bottom surface 49 between the two mating portions on the left side of the keycap 1 and the two right mating portions on the right side, and the key limit is provided.
  • the boss 48 is composed of a key end limit fitting portion 50 and a key lying mounting guide surface 51.
  • the key lying mounting guide surface 51 constitutes a key lying mounting guide portion, and the key lying mounting guide portion may be a flat surface, a curved surface, a corner portion or the like.
  • the two fitting portions are arranged perpendicularly to the paper surface direction and the bottom surface of the key recessed bottom surface 49 between the two mating portions on the right side are respectively provided with the key concave and convex table 47
  • the engaging portion of the key cap 1 is composed of a key boss shoulder 45 and a key reverse curved surface 46 on the key concave and convex table 47, and the opening of the fitting space of the engaging portion of the key cap 1 is directed to the middle of the keycap 1.
  • the cantilever of the sheet metal elastic plate surface 20 interacts with the key-mounting guide portion.
  • the sheet metal elastic plate surface 20 is elastically deformed, and the sheet metal limit position 21 passes over the key limit boss 48.
  • the sheet metal limit position 21 is pressed against the key limit of the keycap 1
  • the key end of the table 48 is limited to the mating portion 50, at which time the keycap 1 is limited to the upper limit position.
  • the keycap is continuously moved downward, and the upper end portion of the metal scissor foot 16 continues to slide from the inside to the outside, and the upper end portion of the sheet metal limit position 21 of the metal scissor foot 16 is mounted along the key surface of the guide surface 51.
  • the lower plate surface of the metal scissor foot 16 moves along the key inverted arc surface 46 (in this embodiment, the sliding engagement portion 3 of the key cap 1 is composed of a key boss shoulder 45 and a key reverse curved surface 46), at the key
  • the sliding engagement portion 3 of the cap 1 and the key-retaining guide surface 51 act to elastically deform the sheet metal elastic plate surface 20.
  • the scissors anti-off structure formed by the sheet metal limit position 21 enters the limit matching space of the key cap 1 over the key limit boss 48, and the limit matching space of the key cap 1 is located at the key end limit.
  • the sheet metal limit position 21 is pressed against the key end limit fitting portion 50 of the key limit boss 48, at this time, the key The cap 1 is in the upper limit position, and the mutually supported metal scissor legs 16 are engaged with the key end limit fitting portion 50 of the key cap 1 through the sheet metal limit stop 21 to limit the key cap 1 to the upper limit position.
  • the limit position of the sheet metal limit position 21 and the key end limit portion 50 can be up to 0.5 mm.
  • the scissor anti-off structure Separating the mating surface of the metal scissor foot 16 from the key cap with the scissor anti-off structure (ie, the scissor anti-off structure is independently provided), so that the surface of the mating surface of the metal scissor foot 16 and the key cap is a simple planar shape.
  • the flat plate surface does not need to be processed, which improves the matching precision and the machining accuracy.
  • the more the punching times of the sheet metal the worse the machining accuracy is, the more the sheet metal plastic deformation is, the worse the machining accuracy is.
  • the upper and lower smoothing of the scissors foot 16 is adopted.
  • the straight surface is respectively matched with the surface of the key cap and the support plate, the fitting precision is greatly improved, the wear resistance between the parts is improved, and the key switch device is durable.
  • the upper matching portion of the metal scissor foot 16 is composed of a flat plate surface and an independent scissor anti-drop structure, which simplifies the stamping process of the metal scissor foot 16 and improves the machining precision of the metal scissor foot 16.
  • the invention provides a plastic elastic limit structure on the plastic keycap 1 , which makes the plastic key cap 1 a fully rigid structure, and the elastic limit structure is arranged on the sheet metal scissors foot, completely solving the existing notebook keyboard.
  • the problem of the key to the key is that the key cap of the key switch device has high yield and durability, and the elastic limit structure of the sheet metal scissors foot of the key switch device has good elasticity, high strength and durability.
  • the key cap becomes a maintenance-free fully rigid structure, which greatly reduces the defective rate of the key cap, and completely solves the problem of the old keyboard keyboard being used when the keyboard is used.
  • the elastic limit structure of the sheet metal scissors foot has good elasticity and high strength, and can increase the interference of the limit position (up to 0.5mm), so that the reliability of the limit of the key cap and the thin metal scissors foot is high.
  • the elastic limit structure of the sheet metal scissors feet has no injection defects, and the elastic limit structure of the sheet metal scissors feet does not suffer from fracture failure. The hidden danger of deformation failure.
  • the low-profile design of the keycap can be further realized.
  • the structural strength and structural rigidity of the scissor foot 16 are greatly improved, and the metal scissor foot realizes ultra-light and ultra-thin and further realizes miniaturization of the key device.
  • the rest is the same as in the first embodiment.
  • the cantilevered notch through hole 20a near the middle of the upper end of the metal scissor foot divides the upper portion of the metal scissor foot into two left and right portions, and the upper end of the lower end of the cantilevered notch through hole 20a has an upwardly extending plate surface.
  • the plate surface constitutes a sheet metal elastic plate surface 20, and the sheet metal elastic plate surface 20 is located at an intermediate position of the upper portion of the metal scissor foot.
  • the upwardly extending plate surface may be widened to narrow the plate surface of the metal scissor foot on the left and right sides of the cantilever notch through hole 20a, so that the cantilever notch penetrates the hole 20a to the left side.
  • the surface of the metal scissor foot on the right side has elasticity
  • the surface of the metal scissor foot on the left side and the right side of the cantilever notch through hole 20a can also be regarded as the sheet metal elastic plate surface 20, and the sheet metal limit position 21 is still
  • the cantilever end of the upwardly extending plate surface (this solution is equivalent to the above solution, the biggest difference is that the upwardly extending plate surface is widened, and the cantilever notch is penetrated through the hole of the metal scissors foot on the left and right sides of the hole 20a. After the narrowing, the plate surface of the metal scissor foot on the left and right sides of the cantilever notch through hole 20a has better elasticity than the upwardly extending plate surface.
  • the left end surface or the right end surface has a sheet metal elastic plate surface 20 extending toward the other end surface, and a sheet metal cantilever stopper 21 formed by bending at the cantilever end of the sheet metal elastic plate surface 20.
  • the sheet metal elastic plate surface 20 is rigidly connected to the left and right end faces of the sheet metal scissor legs 16.
  • the sheet metal cantilever limiter 21 is located on the sheet metal elastic plate surface 20, but is limited by the sheet metal cantilever.
  • the stopper 21 is preferably located in the middle of the sheet metal elastic plate surface 20.
  • the anti-off structure of the scissors is composed of a sheet metal limit position 21 and a sheet metal limit rear block 52, and the sheet metal limit position 21 is smoothly connected with the sheet metal limit rear block 52.
  • FIG. 34 between the left and right end faces of the sheet metal scissor leg 16, and near the sheet metal scissor foot 16 there is a cantilevered notch through hole 20a penetrating the plate surface of the sheet metal scissor leg 16 at the left end of the cantilever notch through hole 20a.
  • the surface or the right end surface has a sheet metal elastic plate surface 20 extending toward the other end surface, and the cantilever end portion of the sheet metal elastic plate surface 20 is formed with a sheet metal limit position 21, and the sheet metal limit position 21 may be a sheet metal elastic sheet surface.
  • the plate surface of the cantilever end of 20 may be an upwardly extending plate surface of the cantilever end of the sheet metal elastic plate surface 20, or may be a curved plate surface of the cantilever end of the sheet metal elastic plate surface 20, and the sheet metal limit position 21 is used in this embodiment. It is an upwardly extending plate surface of the cantilever end of the sheet metal elastic plate surface 20.
  • the sheet metal elastic plate surface 20 is bent downward, and the sheet metal elastic plate surface 20 extends at an angle with the plate surface of the metal scissor foot 16; the angle formed by the sheet metal elastic plate surface 20 and the metal scissor foot 16 is approximately Between 90 degrees ⁇ 0 degrees and 90 degrees ⁇ 20 degrees, the sheet metal elastic plate surface 20 is set to two, but the sheet metal elastic plate surface 20 can also be set to one, but it is preferable to set two.
  • the inner end faces of the two sheet metal limit stops 21 and the key limit bosses 48 of the keycap 1 are erected to the left and right sides (not shown in the figure, the key limit bosses 48 are erected left and right
  • the side surface is a trapezoidal shape with a front narrow and a wide rear, and the left and right two vertical sides of the key limiting boss 48 form a key upright mounting guide).
  • the key limiting boss 48 is erected to the left and right sides.
  • the sheet metal limit position 21 generates a spring change, and the sheet metal limit position 21 passes over the key limit boss 48 (not shown), and the sheet metal limit is applied under the reset force of the reset element (not shown).
  • the stopper 21 is pressed against the key end limit fitting portion 50 (not shown) of the key limit boss 48 of the keycap 1, at which time the key cap 1 is restricted to the upper limit position.
  • the end portion of the sheet metal elastic plate surface 20 interacts with the key upright mounting guide portion, and the sheet metal elastic plate surface 20 is elastically deformed, and the sheet metal limit position 21 is crossed.
  • the key limit boss 48 (not shown) is pressed against the key end of the key limit boss 48 of the keycap 1 by the restoring force of the reset element (not shown).
  • the limit fitting portion 50 (not shown), the keycap 1 is limited to the upper limit position.
  • a rigid key limiting boss 48 is disposed on each of the left and right sides, wherein the key limit is provided.
  • the boss 48 is located at a middle portion between the two key engaging portion bosses 47, and the key restricting boss 48, the key engaging portion boss 47, and the engaging portion of the key cap 1 are all arranged in the width direction.
  • the key cap anti-off structure is composed of a key limiting boss 48, and the inner limiting seat 48 has a finite boss guiding surface 51, a key A key limiting boss end 50 is disposed outside the limiting boss 48.
  • the key engaging portion boss 47 is upwardly projected from the bottom surface of the concave bottom surface of the key cap to form a square boss, and the corner portion outside the boss of the key engaging portion boss 47 located on the left and right sides, respectively (the corner portion may not fall
  • the corners can also be chamfered, but the inverted arcs are optimally formed to form the key boss shoulders 45.
  • the key engaging portion boss 47 of the key cap 1 is located between the two key inverted bosses 53.
  • the outer side of the key engaging portion boss 47 has a key boss shoulder 45; the engaging portion of the key cap 1 is inverted by the key 46.
  • the key boss shoulder 45 and the key limiting boss 48 are formed.
  • the reverse surface of the key inverted boss 53 has an inverted engaging portion and a tilted reverse front bevel 54.
  • the key limiting boss 48 is higher than the key matching.
  • the boss 7 and the inverted engaging portion are formed by a key reverse curved surface 46.
  • FIG. 37 - FIG. 43 there is a cantilevered notch through hole 20a penetrating through the plate surface between the mating portions of the metal scissor foot 16, and a sheet metal elastic plate surface 20 extending upward at the bottom of the cantilever notch through hole 20a, the sheet metal elastic plate
  • the face 20 is bent downwardly and has a sheet metal cantilever elastic limit stop 21 formed by bending a sheet metal upward or downward (in this embodiment, upward) at the cantilever end of the sheet metal elastic plate surface 20.
  • the metal scissor foot 16 is rotated or slidably connected to the mating portion of the key cap by the thickness dimension between the upper upper surface 56 of the scissors of the metal scissor foot 16 and the lower upper surface 57 of the scissors of the metal scissor foot 16.
  • the mating portion of the keycap 1 is composed of a key inverted curved surface 46, a key boss shoulder 45, and a key anti-drop structure.
  • the upper end upper surface 56 of the scissors and the lower upper surface 57 of the scissors are planar, and the upper surface of the upper surface of the scissors 56.
  • the lower upper surface 57 of the scissors is slidably engaged with the key boss shoulder 45 and the key reverse curved surface 46, respectively.
  • the lower edge 26 of the scissors On the outer side of the lower part of the metal scissor foot 16, there is a lower edge 26 of the scissors forming the lower surface of the scissors, and the lower lower surface 59 of the scissors is located at the lower surface of the bent portion of the lower end 26 of the scissors, and the lower surface of the lower end of the scissors 59
  • the lower end surface 59 of the scissors lower end surface cooperates with the plane of the support plate 15 or the upper surface of the switch circuit 12 having the switch contact (this embodiment adopts the upper surface of the switch circuit 12),
  • the scissors lower support portion 59 is an arcuate surface of the lower portion of the metal scissor foot 16.
  • the lower fitting portion of the metal scissor foot 16 is composed of a flat upper end upper surface 58 of the scissors and a scissor lower support portion 59 having a curved surface, wherein the lower scissors support portion 59 is engaged with the upper plate surface of the support plate 15 or The upper surface of the switch circuit is mated, and the lower plate upper surface 58 of the scissors cooperates with the key reverse curved surface 46 on the bent side of the support plate 15.
  • the upper and lower smooth plate surfaces of the scissor feet 16 (such as the upper plate upper surface 56 of the scissors and the lower upper surface 57 of the scissors are planar, and the two plate surfaces need not be processed) respectively, and the surface of the key cap and the support plate are respectively matched. Improve the accuracy of the fit. The wear resistance between the parts is improved, and the key switch device is durable.
  • the scissor foot 16 realizes the cooperation with the surface of the key cap and the support plate, so that the use of the ultra-thin scissors foot 16 becomes a reality, and the material cost of the scissor foot 16 is doubled.
  • the thickness of the aluminum alloy scissor foot 16 is reduced by the current 0.4 mm. The thickness is 0.15 mm; the thickness of the steel scissor foot 16 is reduced from the current 0.4 mm to 0.08 mm.
  • the thickness of the scissor leg 16 is reduced by an ultra-thin scissors foot 16, and the lower fitting portion of the low-metal scissors foot 16 is further realized by a flat-shaped lower end upper surface of the scissors 58 and a scissor-shaped scissors.
  • the support portion 59 is configured to bend the plate surface on the left and right sides of the lower end of the metal scissor leg 16, and the flat portion of the upper end surface 58 of the scissors and the matching portion of the scissor lower support portion 59 and the support plate 15 are formed in a curved shape. Forming a face fit improves the fit precision and machining accuracy.

Landscapes

  • Push-Button Switches (AREA)

Abstract

一种采用超薄超小金属剪刀脚的键开关装置包括键帽（1）、复位元件（11）、有开关的开关回路（12）、有配合部的支撑板（15）、有上下配合部的剪刀脚支撑（16），金属内剪刀脚（28）的剪刀下平面（17）位于剪刀上平面（19）的外侧，金属外剪刀脚（31）的剪刀下平面（17）分别位于剪刀上平面（19）的内侧，剪刀下平面（17）、剪刀上平面（19）通过长度折弯边（36）连接，长度折弯边（36）沿剪刀脚臂（23）的长度方向；金属外剪刀脚（31）的长度折边上端面（42）与剪刀上平面（19）的中横端面（40）之间的距离L1≥金属内剪刀脚（28）的长度折弯边（36）两端面间的距离L。本方案涉及进行敲键操作的键开关装置，特别涉及装载在作为电子仪器的输入装置的键盘中的键开关装置。

Description

一种采用超薄超小金属剪刀脚的键开关装置
优先权声明：
本发明权利要求1及权利要求2及权利要求8要求2015-06-15向中国国家知识产权据递交的申请号为2015103291395的发明专利申请的权利要求及相应的实施例的优先权；
本发明权利要求3至权利要求7要求2015-04-02向中国国家知识产权据递交的申请号为2015101514952的发明专利申请的权利要求及相应的实施例的优先权；
本发明权利要求2、权利要求9及权利要求10求2015-05-09向中国国家知识产权据递交的申请号为2015102320193的发明专利申请的权利要求及相应的实施例的优先权。
技术领域
本发明涉及进行敲键操作的键开关装置，特别涉及装载在作为电子仪器的输入装置的键盘中的键开关装置。本发明还涉及设有多个这种键开关装置的键盘。
背景技术
在装配于笔记本电脑型或掌上型计算机等便携式电子装置中的薄型，即低高度型键盘中，要求进行击打操作的键开关装置的低高度化，并且提高其操作性即手感好-----。
参见图1、图2现有笔记本型或掌上型计算机等便携式电子装置中普遍采用薄型塑料X支撑结构装置，现有键盘的键结构装置包括键帽1、复位元件为有弹性的橡胶弹圈(复位元件还可以是弹簧、磁性元件等)、有能产生通断的开关的开关回路12、有配合部的支撑板15、有上下配合部的剪刀脚16，剪刀脚16通过上下配合部分别与键帽1、支撑板15的配合部转动或滑动连接，从侧面看呈X状安装的剪刀脚16通过中部附近相互之间力的传递构成同步联动支撑结构，以确保键帽1平行于支撑板15升降运动。
其中支撑板15的配合部由支板转动部13及支板滑动部14构成，剪刀脚16(均由塑料生产)由右剪刀脚4及外剪刀脚8构成，剪刀脚16的上下配合部分别由下铰轴9、下滑轴7及剪刀上转动部10、剪刀上滑动部6构成，同步联动支撑结构由右剪刀脚4上的中枢轴5与塑料外剪刀脚8上的外框中枢孔5c铰接构成。
此装置通过塑料制成的右剪刀脚4上的中枢轴5与塑料制成的外剪刀脚8上的中枢孔铰接，下铰轴9及下滑轴7分别与支撑板15上的支板转动部13及支板滑动部14呈转动配合、滑动配合。剪刀上转动部10及剪刀上滑动部6分别与键帽1上的键帽滑动部3及键帽转动部2呈滑动配合、转动配合。形成塑料X支撑结构装置，并通过呈圆拱状动作部件--橡胶弹圈11将键帽1向上顶起，外剪刀脚8及右剪刀脚4的联动部由分别位于剪刀脚臂中部附近的 中枢轴5与中枢孔5c转动配合构成；外剪刀脚8、右剪刀脚4分别与键帽1及支撑板15连接的连接部由分别分布在剪刀脚臂上端或下端的剪刀上转动部10、下滑轴7及剪刀上滑动部6、下铰轴9构成。
从键盘诞生以来，虽笔记本键盘的成本远高于台式机键盘，但笔记本键盘以超薄、手感好获得长期应用至今，现有笔记本键盘有进一步追求低高度的趋势。怎样在高效率生产、降低成本的同时，提高剪刀脚的精度达到提高键盘性能，是笔记本电脑键盘急需解决的问题。
现有的钣金剪刀脚存在的问题：
问题1：参见图3、图4、金属内剪刀脚28、金属外剪刀脚31均有与剪刀脚臂23的长度方向垂直的宽度折弯边24，金属内剪刀脚28、金属外剪刀脚31的剪刀下平面17、剪刀上平面19均通过宽度折弯边连接，剪刀下平面17均位于金属内剪刀脚28、金属外剪刀脚31下方，剪刀上平面19均位于金属内剪刀脚28、金属外剪刀脚31上方。
参见图3、金属内剪刀脚28的左右两侧均有自剪刀下平面17向部向上延伸的内剪延伸板面25，内剪延伸板面25位于剪刀脚臂23旁，在内剪延伸板面25的悬臂端的角部有角部支撑配合部18。
参见图4、金属外剪刀脚31的内侧均有自剪刀下平面17向部向上延伸的内剪延伸板面25，内剪延伸板面25位于剪刀脚臂23旁，在内剪延伸板面25的悬臂端的角部有角部支撑配合部18。
参见图5、金属内剪刀脚28、金属外剪刀脚31分别与键帽1(图中未表示)、支承板15转动或滑动连接；属内剪刀脚28的角部支撑配合部18、剪刀脚臂23的下板面分别与金属外剪刀脚31的剪刀脚臂23的下板面、角部支撑配合部18相互支撑形成相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动。
金属内剪刀脚28、金属外剪刀脚31均采用与剪刀脚臂23的长度方向垂直的宽度折弯边24
1、金属剪刀脚结构不紧凑、刚性不好，采用0.3mm厚以上的铝合金或采用0.2mm钢板均能满足使用要求，金属剪刀脚(0.3mm厚的铝合金剪刀脚重量为0.098g)重量超过现有的塑料剪刀脚(重量约为0.06g)的重量约60％。
2、采用较厚的金属板料生产剪刀脚不利于键盘进一步减薄；
3、金属剪刀脚太厚，钣金冲压成型工艺性差且材料成本较高；
4、该金属剪刀脚结构刚度最差的区域为宽度折弯边24附近，为提高金属剪刀脚结构刚度，金属剪刀脚心两剪刀脚臂的宽度均设计为1.9mm，致金属剪刀脚的长宽尺寸无法缩小。
问题2：从键盘诞生以来，笔记本键盘的键帽1上均设置塑料弹性限位结构，参见图2--1至图2--5、在键帽1安装时，先将键帽滑动部3安装在剪刀上滑动部6上，再向下旋转键帽，在压入过程中，键帽转动部2的两片短粗的塑料弹性限位结构约需产生单边0.15mm的变形---约产生6度的转动，两片短粗的塑料弹性限位结构的宽度B1约为0.7mm，长度H1约为1.6mm，B1/H1＝0.4375，由于塑料是塑性材料，短粗的塑料弹性限位结构弹性差、强度低、限位的过盈量小，加之笔记本键盘越做越薄，键帽转动部2的两片短粗的塑料弹性限位结构(H1尺寸)限制了键帽1低高度的设计，同时，由于注塑缺陷的影响，键帽转动部2的两片短粗的塑料弹性限位结构的模具需斜拔结构等.造成键帽转动部2的两片短粗的塑料弹性限位结构出厂不良率较高。
1、笔记本键盘的键帽1在出厂后，脫落问题非常突出，笔记本键盘的掉键及开关触点失效问题是目前笔记本键盘最突出的两大急待解问题。
2、笔记本键盘的键帽1的塑料弹性限位结构有注塑缺陷的影响。
3、笔记本键盘的键帽1的短粗的塑料弹性限位结构的配合过盈量为单边0.15mm，当该配合过盈量过小时，易出现掉键现象；当该配合过盈量过大时，易出现键帽转动部2的两片短粗的塑料弹性限位结构断裂失效及埋下断裂失效的隐患。
4、两片短粗的塑料弹性限位结构弹性差、强度低。
5、注塑精度低于薄板的冲压精度，精密注塑--小尺寸的结构注塑件公差0.08mm，线性尺寸冲压---薄板的冲压精度0.026mm，薄板的冲压折弯精度0.5度。
6、减薄键帽，势必缩短--短粗的塑料弹性限位结构，短粗的塑料弹性限位结构缩短，造成短粗的塑料弹性限位结构弹力下限，限制了键帽的进一步低高度化设计。
问题3：参见图3-1、键帽1的键竖立限位挡3a、键倒扣配合面3c为一个整体，键配合平面3b为键帽内凹底面的一部分，键倒扣配合面3c与键配合平面3b位置相对应。
参见图3-1至图3-4、现有的采用钣金成型的金属剪刀脚16采用0.25mm-0.7mm厚的板面上成型，金属剪刀脚16的上配合部、下配合部由分别位于剪刀脚臂上端、下端的上冲裁凸台17d、下冲裁凸台17a构成，上冲裁凸台17d、下冲裁凸台17a经冲裁钣金成型为截面呈方形的凸台，上冲裁凸台17d、下冲裁凸台17a可冲压倒角去毛剌(倒角可倒成直面，也可以是圆弧面，也可以是倒圆弧面)，金属剪刀脚16由内金属剪刀脚4及外金属剪刀脚8组成。
在金属剪刀脚16的两个剪刀脚臂的内侧、外侧，有两个从金属剪刀脚16的板面并沿剪刀脚臂长度方向同向延伸的延伸板面17C，延伸板面17C并沿剪刀脚臂厚度方向向下折弯， 延伸板面17C的悬臂端部有冲压成型的冲压悬臂弧18，冲压悬臂弧18位于剪刀脚臂下板面附近并位于剪刀脚臂长度方向的中部附近，剪刀上支撑面17b位于剪刀脚臂下板面的中部附近，是呈平直板面的剪刀脚臂下板面的一部分。
金属剪刀脚16的键结构装置包括键帽1(图中未表示)、弹性体11(图中未表示)、有开关触点的开关回路12、有配合部的支撑板15、有上下配合部的金属剪刀脚16，金属剪刀脚16的上冲裁凸台17d的角部、下冲裁凸台17a的角部分别与键帽1的配合部、支撑板15的配合部转动或滑动连接，其中一个金属剪刀脚16的剪刀上支撑面17b、冲压悬臂弧18与另一个金属剪刀脚16的冲压悬臂弧18、剪刀上支撑面17b相互支撑，形成中部附近相互之间力的传递构成同步联动支撑结构，以确保键帽1平行于支撑板15升降运动。
当键帽1被按下时，键帽1克服弹性体11(图中未表示)的弹力推动内金属剪刀脚4及外金属剪刀脚8的上配合部沿键帽1的移动、内金属剪刀脚4及外金属剪刀脚8的下配合部沿支撑板15的配合部转动或移动，同时冲压悬臂弧18沿剪刀上支撑面17b滑动；键帽1向下移动至键帽1的底面与有开关触点的开关回路12接触即达下极限位，至下极限位时弹性体11内的凸台(图中未表示)触发有开关触点的开关回路12上的开关电路(图中未表示)，当键帽1的外力去掉后，在弹性体11(图中未表示)的弹力作用下，键帽1复位至上极限位。
与钣金剪刀脚16相比较，现普遍采用的塑料剪刀脚16存在强度差、刚度差、精度差，且注塑生产存在注塑缺陷，不能实现键盘进一步低高度化，剪刀脚16结构复杂很难实现自动化安装等，同时，剪刀脚16采用注塑生产效率远低于采用步进模的生产效率，步进模也称高速模具，其具有高效率、高寿命、高精度，被称为现代三高模具，钣金剪刀脚16替代现普遍采用的塑料剪刀脚16是大势所趋。钣金剪刀脚16虽然具有强度高、刚度高、生产效率高、生产设备成本低等优点。但现有的钣金剪刀脚16讲存在以下问题：
1.剪刀脚16的配合部、下配合部均由冲裁钣金成型截面呈方形的凸台，由截面呈方形的凸台的角部分别与键帽、支承板的配合部配合，键帽1的配合部剪刀脚16的凸台的角部会加速与键帽、支承板磨损，造成剪刀脚16、键帽、支承板精度丧失快。
2.将截面呈方形的凸台的角部采用倒角工艺----可倒成直面、圆弧面、倒圆弧面，钣金的倒角工艺难度较大(特别是采用较薄的金属板时)，且存在倒角精度差、表面光洁度差。
3.当剪刀脚16采用非常薄的金属板时，如采用0.1mm---0.2mm的金属板，将截面呈方形的凸台的角部倒角是不可能实现的任务，截面呈方形的凸台的厚度薄到一定程度就成了刀片。
4.当剪刀脚16采用较薄的金属板时(如采用0.08mm---0.15mm的金属板)，剪刀上滑 动部6在键倒扣配合面3c与键配合平面3b之间的空间无法注塑生产(参见图1--图5键倒扣配合面3c与键配合平面3b位置相对应)，该空间的高度尺寸为0.08mm---0.15mm时，注塑模具采用0.08mm---0.15mm的合金薄片抽芯，该薄片既无法加工又无强度。
5.剪刀脚16的配合部无法倒太大的圆角，而无法采用现在流行的键帽安装方法，无法采用现在流行的剪刀脚16的安装方法。
6.现有的钣金剪刀脚16采用0.4mm以上的板厚，材料成本高，影响了实现键盘进一步低高度化(两个现有的钣金剪刀脚16叠在一起达0.8mm厚)。
怎样提高剪刀脚16、键帽、支承板耐磨性能；怎样采用较薄的金属板生产剪刀脚16以降低材料成本，同时实现键盘进一步低高度化，是现有的钣金剪刀脚16能否替代现普遍采用的塑料剪刀脚16问题所在。
发明内容
本发明的目的在于：针对上述存在的问题，本发明提供一种金属剪刀脚的厚度超薄、重量超轻及克服现有键盘掉键问题及解决现有金属剪刀脚的凸台配合部对键帽的磨损快问题。
本发明的技术方案是这样实现的：包括键帽、复位元件、有开关的开关回路、有配合部的支撑板、有上下配合部的剪刀脚，剪刀脚通过上下配合部分别与键帽、支撑板的配合部转动或滑动连接，剪刀脚通过相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动，其特征是：所述金属剪刀脚在金属板面上冲压成型；所述金属剪刀脚成型有有弹性的钣金弹性板面20；所述金属剪刀脚有冲压成型的剪刀防脱结构；在键帽1上设置有键限位凸台48；所述相互支撑的金属剪刀脚通过剪刀防脱结构与键帽1的键限位凸台48限位配合，阻止键脱出或将键帽1限制在上极限位；所述金属剪刀脚由金属内剪刀脚28、金属外剪刀脚31构成，所述金属内剪刀脚28的剪刀下平面17位于剪刀上平面19的外侧，所述金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧，所述剪刀下平面17、剪刀上平面19通过长度折弯边36连接，所述长度折弯边36沿剪刀脚臂23的长度方向；所述金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥所述金属内剪刀脚28的长度折弯边36两端面间的距离L，所述键帽安装时，键帽1的配合部及键限位凸台48迫使钣金弹性板面20产生弹性变形，剪刀防脱结构越过键限位凸台48进入键帽1的配合部的配合空间，在复位元件的复位力作用下，剪刀防脱结构被压在键帽1的键限位凸台48上，此时键帽1被限制在上极限位。
包括键帽、复位元件、有开关的开关回路、有配合部的支撑板、有上下配合部的剪刀脚，剪刀脚通过上下配合部分别与键帽、支撑板的配合部转动或滑动连接，剪刀脚通过相互 之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动，其特征是：所述金属剪刀脚在金属板面上冲压成型；所述金属剪刀脚成型有有弹性的钣金弹性板面20；所述金属剪刀脚有冲压成型的剪刀防脱结构；在键帽1上设置有键限位凸台48；所述相互支撑的金属剪刀脚通过剪刀防脱结构与键帽1的键限位凸台48限位配合，阻止键脱出或将键帽1限制在上极限位；安装时，键帽1的配合部及键限位凸台48迫使钣金弹性板面20产生弹性变形，剪刀防脱结构越过键限位凸台48进入键帽1的配合部的配合空间，在复位元件的复位力作用下，剪刀防脱结构被压在键帽1的键限位凸台48上，此时键帽1被限制在上极限位；所述金属剪刀脚通过剪刀上端上板面56与剪刀上端下板面57间的厚度尺寸与键帽的配合部转动或滑动连接；所述金属内剪刀脚28的剪刀下平面17位于剪刀上平面19的外侧，所述金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧，所述剪刀下平面17、剪刀上平面19通过长度折弯边36连接，所述长度折弯边36沿剪刀脚臂23的长度方向；所述金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥所述金属内剪刀脚28的长度折弯边36两端面间的距离L。
包括键帽、弹性体、有开关触点的开关回路、有配合部的支撑板、有上下配合部的剪刀脚，剪刀脚通过上下配合部分别与键帽、支撑板的配合部连接，其中一个剪刀脚的剪刀上平面19的下板面与另一个剪刀脚的剪刀下平面17的端部相互支撑，形成相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动，其特征是：所述金属内剪刀脚28的剪刀下平面17位于剪刀上平面19的外侧，所述金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧，所述剪刀下平面17、剪刀上平面19通过长度折弯边36连接，所述长度折弯边36沿剪刀脚臂23的长度方向；所述金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥所述金属内剪刀脚28的长度折弯边36两端面间的距离L。
进一步的是：所述复位元件为弹性体、所述有开关的开关回路为有开关触点的开关回路。
进一步的是：所述金属剪刀脚的剪刀上平面19的中部贯穿孔的端缘上有剪刀内加強筋，剪刀内加強筋由金属外剪刀脚31的Ⅱ内加强翻边39、金属内剪刀脚28的Ⅰ内加强翻边35构成。
进一步的是：所述金属外剪刀脚31的剪刀上平面19的左右两侧的边缘上有外加强翻边44。
进一步的是：所述金属剪刀脚的剪刀下平面17、剪刀上平面19还通过宽度折弯面38 连接，所述金属内剪刀脚28的剪刀下平面17分别位于长度折弯边36的外侧及宽度折弯面38的下侧，所述金属外剪刀脚31的剪刀下平面17分别位于长度折弯边36的内侧及宽度折弯面38的下侧,所述金属剪刀脚的剪刀下平面17均连接为一个整体面。
进一步的是：所述金属剪刀脚有的钣金弹性板面20，在钣金弹性板面20的悬臂端有冲压形成的钣金悬臂限位挡21，所述剪刀防脱结构由钣金悬臂限位挡21构成，所述钣金悬臂限位挡21与键限位凸台48限位配合。
进一步的是：在金属剪刀脚下部的外侧均有冲压剪刀脚板面成型的剪刀下端折弯边26，剪刀下端下板面59位于剪刀下端折弯边26的折弯处的下表面，剪刀下端下板面59为圆弧面，呈圆弧面的剪刀下端下板面59与支承板15的平面或有开关触点的开关回路12的上表面配合，剪刀下支撑部59为金属剪刀脚下部的圆弧面。
进一步的是：金属剪刀脚的剪刀上端上板面56与金属剪刀脚的剪刀上端下板面57之间的厚度尺寸与键帽的配合部转动或滑动连接,键帽1的配合部由键倒扣弧面46、键凸台凸肩45、键防脱结构构成，剪刀上端上板面56、剪刀上端下板面57均成平面状，剪刀上端上板面56、剪刀上端下板面57分别与键凸台凸肩45、键倒扣弧面46滑动配合。
进一步的是：所述剪刀下平面17为一个整体，所述内剪刀支撑部18、外剪刀支撑部30分别位于剪刀下平面17的上端的角部、端面延伸板面41的悬臂端端面的角部，所述内剪刀支撑部18的剪刀下平面17的上端的角部、外剪刀支撑部30的端面延伸板面41的悬臂端端面的角部分别与外剪刀支撑部30的剪刀上平面19的下板面、内剪刀支撑部18剪刀上平面19的下板面相互支撑构成同步联动支撑结构。
进一步的是：所述金属内剪刀脚28与长度折弯边36连接的剪刀上平面19的内上平面下端面33下方有内剪刀让位空间34，当键帽处于下极限位时，所述金属外剪刀脚31的剪刀上平面19的中横端面40进入内剪刀让位空间34。
进一步的是：所述金属内剪刀脚28的剪刀上平面19的内上平面下端面33为贯穿板面的冲裁截面。
进一步的是：金属内剪刀脚28的长度折弯边36与剪刀脚臂23的长度方向成锐角，长度折弯边36内侧的剪刀上平面19向下收窄；金属外剪刀脚31的长度折弯边36与剪刀脚臂23的长度方向成锐角，长度折弯边36外侧的剪刀上平面19向下收窄。
本发明的积极效果是：
采用长度折弯边36的剪刀脚：
剪刀脚臂的强度、刚度大幅提高，使采用更薄的金属材料生产剪刀脚成为现实，如采用厚 度0.15mm铝合金剪刀脚即可满足使用要求。
1、采用厚度0.15mm铝合金剪刀脚，剪刀脚重量降低为0.049g，与现有的塑料剪刀脚(重量约为0.06g)比较，剪刀脚重量降低约18％。比采用宽度折弯边24的剪刀脚重量降低约78％。
2、剪刀脚厚度减薄，进一步实现了键盘的低高度化。
3、剪刀脚厚度减薄，成型剪刀脚工艺性更好(如折弯半径更小、折弯回弹更小等)且降低生产剪刀脚的材料成本。
4、剪刀脚的结构更紧凑，剪刀脚的长宽尺寸进一步缩小，可生产键帽尺寸为14.8*14.8的键盘。
采用金属剪刀脚成型有有弹性的钣金弹性板面20的积极效果：
1、键帽1成为免维护的全刚性结构，大幅降低了键帽1出厂不良率，并彻底解决了现有笔记本键盘使用时，掉键的老大难问题。
2、薄片金属剪刀脚的弹性限位结构弹性好、强度高、可增加限位的过盈量(最大可达0.5mm)，使键帽与薄片金属剪刀脚的限位配合可靠性高。
3、薄片金属剪刀脚的弹性限位结构无注塑缺陷。
4、薄片金属剪刀脚的弹性限位结构不会出现断裂失效.变形失效的隐患。
5、可进一步实现键帽的低高度化设计。
6、将金属剪刀脚16与键帽的配合面与剪刀防脱结构分开设置(即将剪刀防脱结构独立设置)，使金属剪刀脚16与键帽的配合面的板面呈简单的平面状，该呈平面状的板面无需加工，提高了配合精度及加工精度(钣金的冲压次数越多加工精度越差即钣金塑性变形所次数越多加工精度越差)；采用剪刀脚16的上下光滑平直板面分别实现与键帽、支承板的面面配合，大幅提高了配合精度，提高了各零件间的耐磨性，键开关装置经久耐用。
采用金属剪刀脚通过厚度尺寸与键帽的配合部的积极效果：
1.采用剪刀脚16的上下光滑板面分别实现与键帽、支承板的面面配合，大幅提高了配合精度。提高了各零件间的耐磨性，键开关装置经久耐用。
2.采用厚度超薄的剪刀脚16，成倍降低剪刀脚16的材料成本，铝合金剪刀脚16的厚度由现在的0.4mm减薄为0.15mm；钢质剪刀脚16的厚度由现在的0.4mm减薄为0.08mm。
4.取消了角部的倒角工艺，简化了剪刀脚16的冲压工艺。
5.采用厚度超薄的剪刀脚16，成倍降低剪刀脚16的厚度，进一步实现键低高度化。
6.键帽的配合部采用键倒扣配合面3c与键配合平面3b沿键的宽度方向排列，即键倒扣配合面3c位于键配合平面3b旁，彻底解决了采用厚度超薄的剪刀脚16时，键帽的配合部因键倒扣配合面3c与键配合平面3b之间的间距太小而无法注塑生产的难题。
7.取消了与键倒扣配合面3c连为一体的键竖立限位挡3a，而将键限位结构独立设置，键帽的键倒扣配合面3c开口向内，并在键倒扣配合面3c设置前斜面为实觋键帽于上极限位的全新安装创造了条件。(现有采用塑料剪刀脚16的键开关装置，塑料剪刀脚16位于下极限位时，键帽实现安装)
该面面配合的剪刀脚16的键开关装置可广泛应用于计算机键盘、掌上型电脑、各类嵌入式键盘及进行敲键操作的键开关装置。本发明成倍降低剪刀脚16的材料成本，简化了剪刀脚16的冲压工艺，大幅提高了各零件的配合精度、提高了各零件间的耐磨性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是一个键帽的现有塑料剪刀脚16结构装置的组成结构图；
图2是一个键帽的现有塑料剪刀脚16结构装置的连接关系图；
图2-1是一个现有键帽的安装过程图；
图2-2是一个现有键帽的安装过程图；
图2-3是一个现有键帽的安装过程图；
图2-4是一个现有键帽的安装过程图；
图2-5是一个现有键帽的安装过程图；
图3-1是一个现有键装置位于上极限位的剖视图；
图3-2是一个现有键装置位于上极限位的剖视图；
图3-3是图3-1位于下极限位的剖视图；
图3-4是图3-2位于下极限位的剖视图；
图3是一种现有的有宽度折弯边的内剪刀脚的立体图；
图4是一种现有的有宽度折弯边的外剪刀脚的立体图；
图5是图3、图4的装配立体图；
图6是本发明的有与剪刀臂的长度方向平行的长度折弯边内剪刀脚立体图；
图7是本发明的有与剪刀臂的长度方向平行的长度折弯边外剪刀脚立体图；
图8是图6的主视图；
图9是图7的主视图；
图10是图8、图9的装配立体图；
图11是本发明的有与剪刀臂的长度方向成夹角的长度折弯边内剪刀脚立体图；
图12是本发明的有与剪刀臂的长度方向成夹角的长度折弯边外剪刀脚立体图；
图13是图11的主视图；
图14是图12的主视图；
图15是图11、图12的装配立体图：
图16a是本发明的有宽度折弯边及长度折弯边的内剪刀脚立体图；
图16b是本发明的有宽度折弯边及长度折弯边的外剪刀脚立体图；
图16是另一本发明的装配立体图；
图17a是本发明的刚性键帽的立体图；
图17是键安装过程的剖视图；
图18是键安装过程的剖视图；
图19是键安装过程的剖视图；
图20是键安装过程的剖视图；
图21是键安装过程的剖视图；
图22是键安装过程的剖视图；
图23是键安装结束时的剖视图；
图24是键安装结束时的剖视图；
图25是键安装结束时的剖视图；
图26是键安装结束时的剖视图；
图27是本发明的一种内剪刀脚的立体图；
图28是本发明的一种外剪刀脚的立体图；
图29是本发明的钣金弹性板面20向左延伸的薄片金属外剪刀脚；
图30是本发明的钣金弹性板面20向左延伸的薄片金属内剪刀脚；
图31是本发明的钣金弹性板面20的薄片金属外剪刀脚；
图32是本发明的钣金弹性板面20的薄片金属内剪刀脚；
图33是本发明的钣金弹性板面20向左向右延伸的薄片金属外剪刀脚；
图34是本发明的钣金弹性板面20向左向右延伸的薄片金属内剪刀脚；
图35是本发明的刚性键帽的侧剖视图；
图36是本发明的刚性键帽的立体图；
图37是本发明的剪刀脚总装完成的键装置于上极限位的立体图；
图38是本发明的键装置的主视图；
图39是图20的D-D剖视图；
图40是图20的B-B剖视图；
图41是图20的C-C剖视图；
图42是图21下降的过程图；
图43是图22下降的过程图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
如图10、图15、图16所示，本发明包括键帽(图中未表示)、复位元件11、有开关的开关回路12、有配合部的支撑板15、有上下配合部的剪刀脚16，剪刀脚16通过上下配合部分别与键帽1、支撑板15的配合部连接，其中一个剪刀脚16的剪刀上平面19的下板面与另一个剪刀脚16的剪刀下平面17的端部相互支撑，形成相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动，本实施例的复位元件为有弹性的橡胶弹圈(现有的复位元件可以是弹簧、磁性元件等)、本实施例的有开关的开关回路为有开关触点的薄膜开关回路。
剪刀下平面17为一个整体，金属内剪刀脚28、金属外剪刀脚31分别与键帽1(图中未表示)、支承板15转动或滑动连接；金属内剪刀脚28的角部支撑配合部18、剪刀脚臂23的下板面分别与金属外剪刀脚31的剪刀脚臂23的下板面、角部支撑配合部18相互支撑形成相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动。
如图6-图16金属剪刀脚16由金属内剪刀脚28、金属外剪刀脚31构成，金属剪刀脚16有剪刀下平面17、剪刀上平面19，金属内剪刀脚28的剪刀下平面17位于剪刀上平面19的外侧或外侧及下侧，金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧或内 侧及下侧，剪刀下平面17、剪刀上平面19通过长度折弯边36连接或通过长度折弯边36、宽度折弯面38连接，长度折弯边36沿剪刀脚臂23的长度方向。
如图8-图9金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥金属内剪刀脚28的长度折弯边36两端面间的距离L。
如图6-图10金属剪刀脚16的剪刀上平面19的中部贯穿孔的端缘上有剪刀内加強筋，剪刀内加強筋由金属外剪刀脚31的Ⅱ内加强翻边39、金属内剪刀脚28的Ⅰ内加强翻边35构成。
如图6-图16金属剪刀脚有钣金弹性板面20，钣金弹性板面20位于金属剪刀脚上部的中间位置，钣金弹性板面20左右两侧的悬臂缺口贯穿孔20a将金属剪刀脚上部分隔为左右两部分，在钣金弹性板面20的悬臂端有折弯形成的钣金悬臂限位挡21，钣金悬臂限位挡21与键帽(图中未表示)配合并限制键帽脱出。
如图11-图15金属内剪刀脚28的长度折弯边36与剪刀脚臂23的长度方向成锐角，长度折弯边36内侧的剪刀上平面19向下收窄；金属外剪刀脚31的长度折弯边36与剪刀脚臂23的长度方向成锐角，长度折弯边36外侧的剪刀上平面19向下收窄。
如图16a图16b剪刀脚28的剪刀下平面17分别位于长度折弯边36的外侧及宽度折弯面38的下侧，金属外剪刀脚31的剪刀下平面17分别位于长度折弯边36的内侧及宽度折弯面38的下侧,所述金属剪刀脚的剪刀下平面17均连接为一个整体面。金属外剪刀脚31的剪刀上平面19的左右两侧的边缘上有外加强翻边44。
如图11-图12金属内剪刀脚28与长度折弯边36连接的剪刀上平面19的内上平面下端面33下方有内剪刀让位空间34，当键帽处于下极限位时，金属外剪刀脚31的剪刀上平面19的中横端面40进入内剪刀让位空间34。
如图15当键帽处于下极限位时，所金属内剪刀脚28的长度折弯边36的上、下端面进入金属外剪刀脚31的外剪刀容纳空间。金属外剪刀脚31的长度折弯边36上端面与金属内剪刀脚28的下端面位置相对应。
如图7、图9、图16金属剪刀脚16的剪刀下平面17、剪刀上平面19还通过宽度折弯面38连接。金属剪刀脚16有剪刀下平面17、剪刀上平面19，金属内剪刀脚28的剪刀下平面17位于剪刀上平面19外侧及下侧，金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧及下侧，剪刀下平面17、剪刀上平面19通过长度折弯边36、宽度折弯面38连接。在长度折弯边36、宽度折弯面38交汇处有折弯交汇贯穿孔37。
应确保:金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的 距离L1≥金属内剪刀脚28的长度折弯边36上端面与宽度折弯面38间的距离L。
应确保:金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥金属内剪刀脚28的长度折弯边36长度L。
金属剪刀脚的剪刀下平面17、剪刀上平面19还通过宽度折弯面38连接，金属采用长度折弯边36的剪刀脚：剪刀脚臂的强度、刚度大幅提高，使采用更薄的金属材料生产剪刀脚成为现实，如采用厚度0.15mm铝合金剪刀脚即可满足使用要求。
1、采用厚度0.15mm铝合金剪刀脚，剪刀脚重量降低为0.049g，与现有的塑料剪刀脚(重量约为0.06g)比较，剪刀脚重量降低约18％。比采用宽度折弯边24的剪刀脚重量降低约78％。
2、剪刀脚厚度减薄，进一步实现了键盘的低高度化。
3、剪刀脚厚度减薄，成型剪刀脚工艺性更好(如折弯半径更小、折弯回弹更小等)且降低生产剪刀脚的材料成本。
4、剪刀脚的结构更紧凑，剪刀脚的长宽尺寸进一步缩小，可生产键帽尺寸为14.8*14.8的键盘。
[0035]实施例2
参见图17a--图26、金属剪刀脚在金属板面上冲压成型；金属剪刀脚成型有有弹性的钣金弹性板面20；金属剪刀脚有冲压成型的剪刀防脱结构；在键帽1上设置有键限位凸台48；相互支撑的金属剪刀脚通过剪刀防脱结构与键帽1的键限位凸台48限位配合，阻止键脱出或将键帽1限制在上极限位。
金属剪刀脚16的上配合部由剪刀上端下板面及剪刀上端上板面、独立设置的剪刀防脱结构构成，剪刀上端下板面与键帽1的上的键倒扣凸台上的键倒扣弧面46配合。
参见图17a、在键帽1的左边的两个配合部之间及右边的两个配合部之间的键内凹底面49的中部附近分别设置有刚性的键限位凸台48，键限位凸台48由键端限位配合部50、键卧安装导向面51构成，由键卧安装导向面51构成键卧安装导向部，键卧安装导向部可以是平面、弧面、角部等。
在键帽1的左边的两个配合部(两个配合部垂直于纸面方向排列之间及右边的两个配合部之间的键内凹底面49的底面上分别设置有键内凹凸台47，键帽1的配合部由键内凹凸台47上的键凸台凸肩45、键倒扣弧面46构成，键帽1的配合部的配合空间的开口均指向键帽1的中部。
参见图17--图26、键帽安装时，钣金弹性板面20的悬臂与键卧安装导向部相互作用， 钣金弹性板面20产生弹性变形，钣金限位挡21越过键限位凸台48，在复位元件的复位力作用下，钣金限位挡21被压在键帽1的键限位凸台48的键端限位配合部50上，此时键帽1被限制在上极限位。
参见图17--图19、键帽安装时，将键帽的配合部的入口对准金属剪刀脚16的上配合部，金属剪刀脚16的支撑起来的安装高度H，应确保L10〉L11，向下移动键帽，金属剪刀脚16的上端部由内向外沿键内凹凸台47表面向键帽1的滑动配合部3的开口处移动。金属剪刀脚16的上端部沿键帽1的键内凹底面49或键帽1的键内凹凸台47，均由内向外滑动进入键帽1的配合部。
当金属剪刀脚16的上配合部(本实施例为金属剪刀脚16的上板面、金属剪刀脚16的下板面)进入键倒扣弧面46与键凸台凸肩45的开口空间后，钣金弹性板面20的悬臂端的钣金限位挡21的上端部逐步开始与键限位凸台48的键卧安装导向面51(键卧安装导向部)接触。
参见图20--图22、继续向下移动键帽，金属剪刀脚16的上端部继续由内向外滑动，金属剪刀脚16的的钣金限位挡21的上端部沿键卧安装导向面51移动，金属剪刀脚16的下板面沿键倒扣弧面46移动(本实施例，键帽1的滑动配合部3由键凸台凸肩45、键倒扣弧面46构成)，在键帽1的滑动配合部3、键卧安装导向面51作用下，使钣金弹性板面20产生弹性变形。
参见图23--图26、由钣金限位挡21构成的剪刀防脱结构越过键限位凸台48进入键帽1的限位配合空间，键帽1的限位配合空间位于键端限位配合部50外侧，在复位元件(图中未表示)的复位力作用下，钣金限位挡21被压在键限位凸台48上的键端限位配合部50上，此时键帽1处于上极限位，相互支撑的金属剪刀脚16通过钣金限位挡21与键帽1的键端限位配合部50限位配合，将键帽1限制在上极限位。
参见图26、钣金限位挡21与键端限位配合部50限位过盈量最大可达0.5mm。
将金属剪刀脚16与键帽的配合面与剪刀防脱结构分开设置(即将剪刀防脱结构独立设置)，使金属剪刀脚16与键帽的配合面的板面呈简单的平面状，该呈平面状的板面无需加工，提高了配合精度及加工精度(钣金的冲压次数越多加工精度越差即钣金塑性变形所次数越多加工精度越差)；采用剪刀脚16的上下光滑平直板面分别实现与键帽、支承板的面面配合，大幅提高了配合精度，提高了各零件间的耐磨性，键开关装置经久耐用。
金属剪刀脚16的上配合部由平直板面及独立设置的剪刀防脱结构构成，简化了金属剪刀脚16的冲压工艺、提高了金属剪刀脚16的加工精度。
本发明提供一种取消了塑料键帽1上的塑料弹性限位结构，使塑料键帽1成为全刚性结构，并将弹性限位结构设置在薄片金属剪刀脚上，彻底解决了现有笔记本键盘掉键的老大难问题，使键开关装置的键帽的成品率高、经久耐用，并使键开关装置的薄片金属剪刀脚的弹性限位结构弹性好、强度高、经久耐用。
1、键帽成为免维护的全刚性结构，大幅降低了键帽出厂不良率，并彻底解决了现有笔记本键盘使用时掉键的老大难问题。
2、薄片金属剪刀脚的弹性限位结构弹性好、强度高、可增加限位的过盈量(最大可达0.5mm)，使键帽与薄片金属剪刀脚的限位配合可靠性高。
3、薄片金属剪刀脚的弹性限位结构无注塑缺陷、薄片金属剪刀脚的弹性限位结构不会出现断裂失效.变形失效的隐患。
4、可进一步实现键帽的低高度化设计。剪刀脚16结构强度及结构刚度大幅提高，金属剪刀脚实现了超轻、超薄并进一步实现键装置的小型化。
其余与实施例1同。
实施例3
参见图27、图28、金属剪刀脚上端中部附近的悬臂缺口贯穿孔20a将金属剪刀脚上部分隔为左右两部分，在悬臂缺口贯穿孔20a的下端底部有向上延伸的板面，该向上延伸的板面构成钣金弹性板面20，所述钣金弹性板面20位于金属剪刀脚上部的中间位置。
(此方案图中未表示)，也可将该向上延伸的板面加宽，将悬臂缺口贯穿孔20a左侧及右侧的金属剪刀脚的板面减窄，使悬臂缺口贯穿孔20a左侧及右侧的金属剪刀脚的板面具有弹性，悬臂缺口贯穿孔20a左侧及右侧的金属剪刀脚的板面也可视为钣金弹性板面20，此时钣金限位挡21仍位于向上延伸的板面的悬臂端(此方案与上述方案等同，最大的区别在于:将该向上延伸的板面加宽，将悬臂缺口贯穿孔20a左侧及右侧的金属剪刀脚的板面减窄后，悬臂缺口贯穿孔20a左侧及右侧的金属剪刀脚的板面具有的弹性好于该向上延伸的板面的弹性)。
在钣金弹性板面20的悬臂端有折弯形成的钣金悬臂限位挡21，所述钣金悬臂限位挡21与键帽配合并限制键帽脱出。
如图29、图30、钣金剪刀脚16的左右端面之间，并靠近钣金剪刀脚16上端面附近有贯穿钣金剪刀脚16板面的悬臂缺口贯穿孔20a，在悬臂缺口贯穿孔20a的左端面或右端面有向另一端面延伸的钣金弹性板面20，在钣金弹性板面20的悬臂端有折弯形成的钣金悬臂限位挡21。
[0092]如图31、图32、钣金弹性板面20刚性连接钣金剪刀脚16的左右端面，钣金悬臂限位挡21位于钣金弹性板面20上，但以钣金悬臂限位挡21位于钣金弹性板面20中部为最佳。剪刀防脱结构由钣金限位挡21、钣金限位后挡52构成，钣金限位挡21与钣金限位后挡52圆滑连接。
如图33、图34、钣金剪刀脚16的左右端面之间，并靠近钣金剪刀脚16上部有贯穿钣金剪刀脚16板面的悬臂缺口贯穿孔20a，在悬臂缺口贯穿孔20a的左端面或右端面有向另一端面延伸的钣金弹性板面20，钣金弹性板面20的悬臂端部成形有钣金限位挡21，钣金限位挡21可以是钣金弹性板面20的悬臂端的板面，可以是钣金弹性板面20的悬臂端的向上延伸的板面，也可是钣金弹性板面20的悬臂端的弯折板面，本实施例采用钣金限位挡21是钣金弹性板面20的悬臂端的向上延伸的板面。
钣金弹性板面20向下弯折，钣金弹性板面20与金属剪刀脚16的板面成夹角延伸；钣金弹性板面20与金属剪刀脚16的板面形成的夹角约为90度±0度至90度±20度之间，钣金弹性板面20设置为二个，但也可以将钣金弹性板面20设置为一个，但以设置二个为最佳。
安装时(图中未表示)，两个钣金限位挡21的內侧端面与键帽1的键限位凸台48左右竖立侧面(图中未表示，键限位凸台48左右两竖立侧面呈前窄后宽的梯形，键限位凸台48的呈梯形的左右两竖立侧面构成键竖立安装导向部)接触，下压键帽1时，键限位凸台48左右竖立侧面使两个钣金限位挡21产生弹变，钣金限位挡21越过键限位凸台48(图中未表示)，在复位元件(图中未表示)的复位力作用下，钣金限位挡21被压在键帽1的键限位凸台48的键端限位配合部50(图中未表示)上，此时键帽1被限制在上极限位。
[0098]如图29---图34、安装时，钣金弹性板面20的端部与键竖立安装导向部相互作用，钣金弹性板面20产生弹性变形，钣金限位挡21越过键限位凸台48(图中未表示)，在复位元件(图中未表示)的复位力作用下，钣金限位挡21被压在键帽1的键限位凸台48的键端限位配合部50(图中未表示)上，此时键帽1被限制在上极限位。
其余与实施例2同。
实施例5
参见图35、图36、在键帽1的宽度方向的两个配合部之间的键帽内凹底面的底面上，分别设置有左右各一个刚性的键限位凸台48，其中键限位凸台48位于两段键配合部凸台47之间的中部位置，键限位凸台48、键配合部凸台47、键帽1的配合部均沿宽度方向排列。
键帽防脱结构由键限位凸台48构成，键限位凸台48内侧有限位凸台导向钭面51，键 限位凸台48外侧设置有键限位凸台端部50。
键配合部凸台47从键帽内凹底面的底面上向上凸起形成方形凸台，在分别位于左侧、右侧的键配合部凸台47的凸台外侧的角部(角部可不倒角，也可倒角，但以倒圆弧最佳)形成键凸台凸肩45。键帽1的键配合部凸台47位于两个键倒扣凸台53之间，键配合部凸台47的外侧有键凸台凸肩45；键帽1的配合部由键倒扣弧面46、键凸台凸肩45、键限位凸台48构成，键倒扣凸台53的倒扣表面有倒扣配合部、倾钭的倒扣前斜面54，键限位凸台48高于键配合部凸台47，倒扣配合部由键倒扣弧面46构成。
参见图37--图43金属剪刀脚16的配合部之间有贯穿板面的悬臂缺口贯穿孔20a，在悬臂缺口贯穿孔20a的底部有向上延伸的钣金弹性板面20，钣金弹性板面20向下弯折延伸，在钣金弹性板面20的悬臂端有向上或向下(本实施例为向上)弯折钣金形成的钣金悬臂弹性限位挡21。
金属剪刀脚16通过金属剪刀脚16的剪刀上端上板面56与金属剪刀脚16的剪刀上端下板面57之间的厚度尺寸与键帽的配合部转动或滑动连接。
键帽1的配合部由键倒扣弧面46、键凸台凸肩45、键防脱结构构成，剪刀上端上板面56、剪刀上端下板面57均成平面状，剪刀上端上板面56、剪刀上端下板面57分别与键凸台凸肩45、键倒扣弧面46滑动配合。
在金属剪刀脚16下部的外侧均有冲压剪刀脚板面成型的剪刀下端折弯边26，剪刀下端下板面59位于剪刀下端折弯边26的折弯处的下表面，剪刀下端下板面59为圆弧面，呈圆弧面的剪刀下端下板面59与支承板15的平面或有开关触点的开关回路12的上表面配合(本实施例采用与开关回路12的上表面配合)，剪刀下支撑部59为金属剪刀脚16下部的圆弧面。
金属剪刀脚16的下配合部由呈平面状的剪刀下端上板面58、呈弧面状的剪刀下支撑部59构成，其中，剪刀下支承部59与支撑板15的上板面配合或与开关回路的上表面配合，剪刀下端上板面58与支撑板15的折弯边上的键倒扣弧面46配合。
采用剪刀脚16的上下光滑板面(如剪刀上端上板面56、剪刀上端下板面57均成平面状，该两板面无需加工)分别实现与键帽、支承板的面面配合，大幅提高了配合精度。提高了各零件间的耐磨性，键开关装置经久耐用。
剪刀脚16实现与键帽、支承板的面面配合，使采用厚度超薄的剪刀脚16成为现实，成倍降低剪刀脚16的材料成本，铝合金剪刀脚16的厚度由现在的0.4mm减薄为0.15mm；钢质剪刀脚16的厚度由现在的0.4mm减薄为0.08mm。
面面配合的实现，取消了现有金属剪刀脚的凸台角部的倒角工艺，简化了剪刀脚的冲压工艺。
采用厚度超薄的剪刀脚16，成倍降低剪刀脚16的厚度，进一步实现键低高金属剪刀脚16的下配合部由呈平面状的剪刀下端上板面58、呈弧面状的剪刀下支撑部59构成，将金属剪刀脚16的下端左右两侧的板面折弯，由呈平面状的剪刀下端上板面58及弧形面状的剪刀下支撑部59与支撑板15的配合部形成面面配合，提高了配合精度及加工精度。
其余与实施例2同。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在发明的保护范围之内。

Claims (14)

  1. 本发明的一种采用超薄超小金属剪刀脚的键开关装置包括键帽、复位元件、有开关的开关回路、有配合部的支撑板、有上下配合部的剪刀脚，剪刀脚通过上下配合部分别与键帽、支撑板的配合部转动或滑动连接，剪刀脚通过相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动，其特征是：所述金属剪刀脚在金属板面上冲压成型；所述金属剪刀脚成型有有弹性的钣金弹性板面20；所述金属剪刀脚有冲压成型的剪刀防脱结构；在键帽1上设置有键限位凸台48；所述相互支撑的金属剪刀脚通过剪刀防脱结构与键帽1的键限位凸台48限位配合，阻止键脱出或将键帽1限制在上极限位；所述金属剪刀脚由金属内剪刀脚28、金属外剪刀脚31构成，所述金属内剪刀脚28的剪刀下平面17位于剪刀上平面19的外侧，所述金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧，所述剪刀下平面17、剪刀上平面19通过长度折弯边36连接，所述长度折弯边36沿剪刀脚臂23的长度方向；所述金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥所述金属内剪刀脚28的长度折弯边36两端面间的距离L，所述键帽安装时，键帽1的配合部及键限位凸台48迫使钣金弹性板面20产生弹性变形，剪刀防脱结构越过键限位凸台48进入键帽1的配合部的配合空间，在复位元件的复位力作用下，剪刀防脱结构被压在键帽1的键限位凸台48上，此时键帽1被限制在上极限位。
  2. 本发明的一种采用超薄超小金属剪刀脚的键开关装置包括键帽、复位元件、有开关的开关回路、有配合部的支撑板、有上下配合部的剪刀脚，剪刀脚通过上下配合部分别与键帽、支撑板的配合部转动或滑动连接，剪刀脚通过相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动，其特征是：所述金属剪刀脚在金属板面上冲压成型；所述金属剪刀脚成型有有弹性的钣金弹性板面20；所述金属剪刀脚有冲压成型的剪刀防脱结构；在键帽1上设置有键限位凸台48；所述相互支撑的金属剪刀脚通过剪刀防脱结构与键帽1的键限位凸台48限位配合，阻止键脱出或将键帽1限制在上极限位；安装时，键帽1的配合部及键限位凸台48迫使钣金弹性板面20产生弹性变形，剪刀防脱结构越过键限位凸台48进入键帽1的配合部的配合空间，在复位元件的复位力作用下，剪刀防脱结构被压在键帽1的键限位凸台48上，此时键帽1被限制在上极限位；所述金属剪刀脚通过剪刀上端上板面56与剪刀上端下板面57间的厚度尺寸与键帽的配合部转动或滑动连接；所述金属内剪刀脚28的剪刀下平面17位于剪刀上平面19的外侧，所述金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧，所述剪刀下平面17、剪刀上平面19通过长度折弯边36连接，所述长度折弯边36沿剪刀脚臂23的长度方向；所述金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥所述金属内剪刀脚28的长度折弯边36两端面间 的距离L。
  3. 本发明的一种采用超薄超小金属剪刀脚的键开关装置包括键帽、弹性体、有开关触点的开关回路、有配合部的支撑板、有上下配合部的剪刀脚，剪刀脚通过上下配合部分别与键帽、支撑板的配合部连接，其中一个剪刀脚的剪刀上平面19的下板面与另一个剪刀脚的剪刀下平面17的端部相互支撑，形成相互之间力的传递构成同步联动支撑结构，以确保键帽平行于支撑板作升降运动，其特征是：所述金属内剪刀脚28的剪刀下平面17位于剪刀上平面19的外侧，所述金属外剪刀脚31的剪刀下平面17分别位于剪刀上平面19的内侧，所述剪刀下平面17、剪刀上平面19通过长度折弯边36连接，所述长度折弯边36沿剪刀脚臂23的长度方向；所述金属外剪刀脚31的长度折边上端面42与剪刀上平面19的中横端面40之间的距离L1≥所述金属内剪刀脚28的长度折弯边36两端面间的距离L。
  4. 如权利要求3、一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述复位元件为弹性体、所述有开关的开关回路为有开关触点的开关回路。
  5. 如权利要求1或2或3或4、一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述金属剪刀脚的剪刀上平面19的中部贯穿孔的端缘上有剪刀内加強筋，剪刀内加強筋由金属外剪刀脚31的Ⅱ内加强翻边39、金属内剪刀脚28的Ⅰ内加强翻边35构成。
  6. 如权利要求1或2或3或4、一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述金属外剪刀脚31的剪刀上平面19的左右两侧的边缘上有外加强翻边44。
  7. 如权利要求1或2或3或4、一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述金属剪刀脚的剪刀下平面17、剪刀上平面19还通过宽度折弯面38连接，所述金属内剪刀脚28的剪刀下平面17分别位于长度折弯边36的外侧及宽度折弯面38的下侧，所述金属外剪刀脚31的剪刀下平面17分别位于长度折弯边36的内侧及宽度折弯面38的下侧,所述金属剪刀脚的剪刀下平面17均连接为一个整体面。
  8. 如权利要求1或2或3一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述金属剪刀脚有的钣金弹性板面20，在钣金弹性板面20的悬臂端有冲压形成的钣金悬臂限位挡21，所述剪刀防脱结构由钣金悬臂限位挡21构成，所述钣金悬臂限位挡21与键限位凸台48限位配合。
  9. 如权利要求1或2或3一种采用超薄超小金属剪刀脚的键开关装置，其特征是：在金属剪刀脚下部的外侧均有冲压剪刀脚板面成型的剪刀下端折弯边26，剪刀下端下板面59位于剪刀下端折弯边26的折弯处的下表面，剪刀下端下板面59为圆弧面，呈圆弧面的剪刀下端下板面59与支承板15的平面或有开关触点的开关回路12的上表面配合，剪刀下支撑部59为金 属剪刀脚下部的圆弧面。
  10. 如权利要求1或2或3一种采用超薄超小金属剪刀脚的键开关装置，其特征是：金属剪刀脚的剪刀上端上板面56与金属剪刀脚的剪刀上端下板面57之间的厚度尺寸与键帽的配合部转动或滑动连接,键帽1的配合部由键倒扣弧面46、键凸台凸肩45、键防脱结构构成，剪刀上端上板面56、剪刀上端下板面57均成平面状，剪刀上端上板面56、剪刀上端下板面57分别与键凸台凸肩45、键倒扣弧面46滑动配合。
  11. 如权利要求1或2或3一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述剪刀下平面17为一个整体，所述内剪刀支撑部18、外剪刀支撑部30分别位于剪刀下平面17的上端的角部、端面延伸板面41的悬臂端端面的角部，所述内剪刀支撑部18的剪刀下平面17的上端的角部、外剪刀支撑部30的端面延伸板面41的悬臂端端面的角部分别与外剪刀支撑部30的剪刀上平面19的下板面、内剪刀支撑部18剪刀上平面19的下板面相互支撑构成同步联动支撑结构。
  12. 如权利要求1或2或3一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述金属内剪刀脚28与长度折弯边36连接的剪刀上平面19的内上平面下端面33下方有内剪刀让位空间34，当键帽处于下极限位时，所述金属外剪刀脚31的剪刀上平面19的中横端面40进入内剪刀让位空间34。
  13. 如权利要求12、一种采用超薄超小金属剪刀脚的键开关装置，其特征是：所述金属内剪刀脚28的剪刀上平面19的内上平面下端面33为贯穿板面的冲裁截面。
  14. 如权利要求1或2或3、一种采用超薄超小金属剪刀脚的键开关装置，其特征是：金属内剪刀脚28的长度折弯边36与剪刀脚臂23的长度方向成锐角，长度折弯边36内侧的剪刀上平面19向下收窄；金属外剪刀脚31的长度折弯边36与剪刀脚臂23的长度方向成锐角，长度折弯边36外侧的剪刀上平面19向下收窄。
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