CN109314007A

CN109314007A - A kind of key switch using ultra-thin extra small metal scissor

Info

Publication number: CN109314007A
Application number: CN201680020655.2A
Authority: CN
Inventors: 陈�峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-02
Filing date: 2016-04-02
Publication date: 2019-02-05
Anticipated expiration: 2036-04-02
Also published as: WO2016155672A1; CN109314007B

Abstract

A kind of key switch using ultra-thin extra small metal scissor includes keycap (1), reset element (11), there is the switching circuitry (12) of switch, there is the support plate (15) of auxiliary section, there is the scissor support (16) of upper and lower auxiliary section, the scissors lower plane (17) of scissor (28) is located at the outside of plane (19) on scissors in metal, the scissors lower plane (17) of the outer scissor (31) of metal is located at the inside of plane on scissors (19), scissors lower plane (17), plane (19) is connected by length bending edges (36) on scissors, length direction of the length bending edges (36) along scissor arm (23)；Distance L between length bending edges (36) both ends of the surface of scissor (28) in the L1 >=metal of the distance between the length flanging upper surface (42) of the outer scissor (31) of metal and the middle cross face (40) of plane on scissors (19).This programme is related to stroke the key switch of operation, in particular to the key switch being loaded in the keyboard as the input unit of electronic instrument.

Description

A kind of key switch using ultra-thin extra small metal scissor

Prioity claim:

The claims in the present invention 1 and claim 2 and claim 8 require 2015-06-15 to China national intellectual property according to submit application No. is the claim of 2015103291395 application for a patent for invention and the priority of corresponding embodiment；

The claims in the present invention 3 to claim 7 require 2015-04-02 to China national intellectual property according to submit application No. is the claim of 2015101514952 application for a patent for invention and the priority of corresponding embodiment；

The claims in the present invention 2, claim 9 and claim 10 ask 2015-05-09 to China national intellectual property according to submit application No. is the claim of 2015102320193 application for a patent for invention and the priority of corresponding embodiment.

Technical field

The present invention relates to the key switch for the operation that stroke, in particular to the key switch being loaded in the keyboard as the input unit of electronic instrument.The invention further relates to the keyboards for being equipped with multiple this key switch.

Background technique

It is slim in the portable electronic devices such as laptop type or palmtop computer being assemblied in, i.e., in low clearance type keyboard, it is desirable that carry out the low level of the key switch of beating operation, and improve its operability i.e. good hand touch --- --.

Referring to Fig. 1, thin plastic X support structure apparatus is generallyd use in the portable electronic devices such as the existing notebook type of Fig. 2 or palmtop computer, the bond structure device of existing keyboard includes keycap 1, reset element is that (reset element can also be spring to flexible rubber bullet circle, magnetic element etc.), there is the switching circuitry 12 for the switch that can generate on-off, there is the support plate 15 of auxiliary section, there is the scissor 16 of upper and lower auxiliary section, scissor 16 by upper and lower auxiliary section respectively with keycap 1, the auxiliary section of support plate 15 rotates or is slidably connected, synchronous interaction support construction is constituted by the transmitting of the mutual power of near middle in the scissor 16 of X shape installation from the side, to ensure that keycap 1 is parallel to 15 elevating movement of support plate.

Wherein the auxiliary section of support plate 15 is made of supporting plate rotation section 13 and supporting plate sliding part 14, scissor 16 (by plastics-production) is made of right scissor 4 and outer scissor 8, the auxiliary section up and down of scissor 16 is made of sliding part 6 on rotation section 10 on down hinge 9, lower slide-bar 7 and scissors, scissors respectively, and synchronous interaction support construction is hingedly made of the middle pivot 5 and outline border pivot hole 5c outside plastics on scissor 8 on right scissor 4.

Middle pivot 5 of this device on the right scissor 4 made of plastics and the pivot hole on outer scissor 8 made of plastics are hinged, down hinge 9 and lower slide-bar 7 respectively in support plate 15 supporting plate rotation section 13 and supporting plate sliding part 14 be rotating, be slidably matched.On scissors on rotation section 10 and scissors sliding part 6 respectively on keycap 1 keycap sliding part 3 and keycap rotation section 2 in being slidably matched, be rotatably assorted.Plastics X support structure apparatus being formed, and by being in circular arch shape action component -- rubber bullet circle 11 jacks up keycap 1 upwards, and the linkage portion of outer scissor 8 and right scissor 4 is by being located at scissor arm near middle Middle pivot 5 and pivot hole 5c is rotatably assorted composition；Sliding part 6, down hinge 9 are constituted on rotation section 10, lower slide-bar 7 and scissors on scissors of the interconnecting piece that outer scissor 8, right scissor 4 are connect with keycap 1 and support plate 15 respectively by being respectively distributed to scissor arm upper end or lower end.

Since being born from keyboard, though the cost of keyboard of notebook computer is much higher than desktop keyboard, keyboard of notebook computer obtains prolonged application so far with ultra-thin, good hand touch, and existing keyboard of notebook computer has the tendency that further seeking for low clearance.How while high efficiency production, reducing cost, the precision for improving scissor reaches raising keyboard feature, is keyboard of notebook computer urgent problem.

Existing metal plate scissor there are the problem of:

Problem 1: there are the width bending edges 24 vertical with the length direction of scissor arm 23 referring to scissor 31 outside scissor 28 in Fig. 3, Fig. 4, metal, metal, the scissors lower plane 17 of the outer scissor 31 of scissor 28, metal in metal, plane 19 is connected by width bending edges on scissors, scissors lower plane 17 is respectively positioned on outer 31 lower section of scissor of scissor 28, metal in metal, and plane 19 is respectively positioned on outer 31 top of scissor of scissor 28, metal in metal on scissors.

Have to cut in upwardly extending from scissors lower plane 17 to portion referring to the left and right sides of scissor 28 in Fig. 3, metal and extend plate face 25, inside cuts extension plate face 25 and be located at by scissor arm 23, cutting the corner for extending the cantilever end of plate face 25 inside has corner buttresses auxiliary section 18.

Referring to fig. 4, the inside of the outer scissor 31 of metal has upwardly extended from scissors lower plane 17 to portion in cut and extend plate face 25, inside cut and extend plate face 25 and be located at by scissor arm 23, there is corner buttresses auxiliary section 18 in the corner for cutting the cantilever end of extension plate face 25 inside.

Referring to scissor 31 outside scissor 28 in Fig. 5, metal, metal respectively with 1 (not shown) of keycap, the rotation of support plate 15 or be slidably connected；The lower face of the corner buttresses auxiliary section 18, scissor arm 23 that belong to interior scissor 28 forms the transmitting composition synchronous interaction support construction of mutual power with the lower face of the scissor arm 23 of scissor 31, corner buttresses auxiliary section 18 mutually support outside metal respectively, makees elevating movement to ensure that keycap is parallel to support plate.

The outer scissor 31 of scissor 28, metal is all made of the width bending edges 24 vertical with the length direction of scissor arm 23 in metal

1, metal scissor leg structure is not compact, rigidity is bad, it is able to satisfy requirement using aluminium alloy more than 0.3mm thickness or using 0.2mm steel plate, metal scissor (the aluminium alloy scissor weight of 0.3mm thickness is 0.098g) weight is more than the weight about 60% of existing plastics scissor (weight is about 0.06g).

2, it is unfavorable for keyboard using thicker metal blank production scissor to be further thinned；

3, metal scissor is too thick, and metal plate punching moulded manufacturability is poor and material cost is higher；

4, the worst region of the metal scissor leg structure rigidity is near width bending edges 24, and to improve metal scissor leg structure rigidity, the width of two scissor arm of metal scissors arch of the foot is both designed as 1.9mm, causes the length and width dimensions of metal scissor that can not reduce.

Problem 2: since being born from keyboard, elasticity of plastics position limiting structure is respectively provided on the keycap 1 of keyboard of notebook computer, -- 1 to Fig. 2 -- 5 referring to fig. 2, when keycap 1 is installed, first keycap sliding part 3 is mounted on scissors on sliding part 6, keycap is rotated still further below, in process of press in, the short and thick elasticity of plastics position limiting structure of the two panels of keycap rotation section 2 about needs to generate the deformation of unilateral 0.15mm --- about generate 6 degree of rotation, the width B1 of the short and thick elasticity of plastics position limiting structure of two panels is about 0.7mm, length H1 is about 1.6mm, B1/H1=0.4375, since plastics are plastic materials, short and thick elasticity of plastics position limiting structure poor flexibility, intensity is low, the magnitude of interference of limit is small, in addition keyboard of notebook computer becomes thin, the short and thick elasticity of plastics limit of the two panels of keycap rotation section 2 Structure (H1 size) limits the design of 1 low clearance of keycap, simultaneously, due to the influence of injection defect, the mold of the short and thick elasticity of plastics position limiting structure of the two panels of keycap rotation section 2 need to tiltedly pull out the elasticity of plastics position limiting structure factory that the such as structure cause the two panels of keycap rotation section 2 short and thick, and bad rate is higher.

1, the keycap 1 of keyboard of notebook computer is after factory, and the problem that falls off is very prominent, keyboard of notebook computer fall key and switch contact Problem of Failure is the big anxious open problems of current keyboard of notebook computer most outstanding two.

2, the elasticity of plastics position limiting structure of the keycap 1 of keyboard of notebook computer has the influence of injection defect.

3, the matching allowance of the short and thick elasticity of plastics position limiting structure of the keycap 1 of keyboard of notebook computer is that unilateral 0.15mm easily occurs key phenomenon when the matching allowance is too small；When the matching allowance is excessive, easily there is the short and thick elasticity of plastics position limiting structure fracture failure of two panels of keycap rotation section 2 and bury the hidden danger of fracture failure.

4, the short and thick elasticity of plastics position limiting structure poor flexibility of two panels, intensity are low.

5, injection molding precision is lower than the punching precision of thin plate, the structure moulding tolerance 0.08mm of precise injection molding -- small size, the punching precision 0.026mm of linear dimension punching press --- thin plate, 0.5 degree of the pressing and bending precision of thin plate.

6, keycap is thinned, certainly will shorten -- short and thick elasticity of plastics position limiting structure, short and thick elasticity of plastics position limiting structure shorten, and cause short and thick elasticity of plastics position limiting structure elastic force lower limit, limit the further low level design of keycap.

Problem 3: being an entirety referring to the key setting limiting block 3a of Fig. 3-1, keycap 1, key back-off mating surface 3c, and key cooperates plane 3b to be a part of concave bottom surface in keycap, and key back-off mating surface 3c is corresponding with the key cooperation position plane 3b.

Referring to Fig. 3-1 to Fig. 3-4, it is formed in the existing plate face using the use 0.25mm-0.7mm thickness of metal scissor 16 of sheet-metal formed, the upper auxiliary section of metal scissor 16, lower auxiliary section is by being located at scissor arm upper end, the upper punching boss 17d of lower end, lower punching boss 17a is constituted, upper punching boss 17d, lower punching boss 17a is through the boss that punching sheet-metal formed is that section is square, upper punching boss 17d, lower punching boss 17a can punching chamfers burring (chamfering can be changed into and be faced directly, it is also possible to arc surface, it is also possible to rounding cambered surface), metal scissor 16 is made of interior metal scissor 4 and outer metal scissor 8.

In inside, the outside of two scissor arms of metal scissor 16, there are two the plate face from metal scissor 16 and the extension plate face 17C that extends in the same direction along scissor arm lengths direction, extend plate face 17C and along scissor arm thickness direction downward bending, The cantilever end for extending plate face 17C has stamping forming punching press cantilever arc 18, punching press cantilever arc 18 is located at scissor arm lower face nearby and is located at the near middle in scissor arm lengths direction, supporting surface 17b is located at the near middle of scissor arm lower face on scissors, is a part in the scissor arm lower face of straight plate face.

The bond structure device of metal scissor 16 includes 1 (not shown) of keycap, 11 (not shown) of elastomer, there is the switching circuitry 12 of switch contact, there is the support plate 15 of auxiliary section, there is the metal scissor 16 of upper and lower auxiliary section, the corner of the upper punching boss 17d of metal scissor 16, the corner auxiliary section with keycap 1 respectively of lower punching boss 17a, the auxiliary section of support plate 15 rotates or is slidably connected, supporting surface 17b on the scissors of one of metal scissor 16, the punching press cantilever arc 18 of punching press cantilever arc 18 and another metal scissor 16, supporting surface 17b is mutually supported on scissors, the transmitting for forming the mutual power of near middle constitutes synchronous interaction support construction, to ensure that keycap 1 is parallel to 15 elevating movement of support plate.

When keycap 1 is pressed, keycap 1 overcome the elastic force of 11 (not shown) of elastomer push in the upper auxiliary section of metal scissor 4 and outer metal scissor 8 along the rotation of the auxiliary section of support plate 15 or moved along the lower auxiliary section of the moving of keycap 1, interior metal scissor 4 and outer metal scissor 8, while the supporting surface 17b along scissors of punching press cantilever arc 18 is slided；Keycap 1 is moved downward to the bottom surface of keycap 1 and the switching circuitry 12 for having switch contact contacts i.e. up to limit inferior position, the switching circuit (not shown) on switching circuitry 12 that boss (not shown) triggering when to limit inferior position in elastomer 11 has switch contact, after the external force of keycap 1 is removed, under the elastic force effect of 11 (not shown) of elastomer, keycap 1 is reset to limes superiors position.

Compared with metal plate scissor 16, there are intensity difference, poor rigidity, low precisions for the plastics scissor 16 now generallyd use, and there are injection defects for injection molding production, it can not achieve the further low level of keyboard, structure is complicated the automation installation difficult to realize etc. of scissor 16, simultaneously, scissor 16 is far below the production efficiency using stepping mould using injection molding production efficiency, stepping mould is also referred to as high speed mold, it is with high efficiency, high life, high-precision, referred to as modern three high molds, it is trend of the times that metal plate scissor 16, which substitutes the plastics scissor 16 now generallyd use,.Although metal plate scissor 16 has many advantages, such as that intensity height, rigidity height, high production efficiency, production equipment are at low cost.But existing metal plate scissor 16, which is said, to be had the following problems:

1. the boss that the auxiliary section of scissor 16, lower auxiliary section are square by punching sheet-metal formed section, the corner for the boss being square from section respectively with keycap, support plate auxiliary section with, the corner of the boss of the auxiliary section scissor 16 of keycap 1 can accelerate to wear with keycap, support plate, cause scissor 16, keycap, support plate precision to lose fast.

2. by the corner for the boss that section is square use chamfer angle technique ----can change into face directly, arc surface, rounding cambered surface, the chamfer angle technique difficulty of metal plate is larger (when especially with relatively thin metal plate), and there are chamfering low precisions, poor surface smoothness.

3. such as using the metal plate of 0.1mm---0.2mm, the corner chamfering by the boss that section is square is impossible task, and the thickness for the boss that section is square is thin to a certain extent just at blade when scissor 16 is using very thin metal plate.

4. sliding on scissors when scissor 16 is using relatively thin metal plate (metal plate as used 0.08mm---0.15mm) Dynamic portion 6 can not be molded production (referring to Fig. 1 -- Fig. 5 key is buckled to mating surface 3c and key cooperates the position plane 3b corresponding) in the space that key is buckled between mating surface 3c and key cooperation plane 3b, when the height dimension in the space is 0.08mm---0.15mm, injection mold uses the alloy sheet core pulling of 0.08mm---0.15mm, which can not only process but also without intensity.

5. the fillet that the auxiliary section of scissor 16 can not be too big, and currently popular keycap installation method can not be used, the installation method of currently popular scissor 16 can not be used.

6. existing metal plate scissor 16 is using the plate thickness of 0.4mm or more, material cost is high, affects and realizes the further low level of keyboard (two existing metal plate scissors 16 are stacked up to 0.8mm thickness).

How scissor 16, keycap, support plate wear-resisting property are improved；How to use relatively thin metal plate to produce scissor 16 to reduce material cost, while realizing the further low level of keyboard, is that can existing metal plate scissor 16 substitute 16 problem of the plastics scissor place now generallyd use.

Summary of the invention

It is an object of the invention to: in view of the above problems, the present invention provides the thickness ultrathin of metal scissor a kind of, ultra lightweight and overcomes the problems, such as that existing keyboard falls key and solves the problems, such as quick abrasion of the boss auxiliary section to keycap of existing metal scissor.

The technical scheme of the present invention is realized as follows: including keycap, reset element, the switching circuitry for having switch, the support plate for having auxiliary section, the scissor for having upper and lower auxiliary section, scissor is rotated or is slidably connected with the auxiliary section of keycap, support plate respectively by upper and lower auxiliary section, scissor constitutes synchronous interaction support construction by the transmitting of mutual power, make elevating movement to ensure that keycap is parallel to support plate, it is characterized in that: metal scissor punch forming on metal plate；The metal scissor forms flexible metal plate elasticity plate face 20；The metal scissor has stamping forming scissors disconnecting prevention structure；Key positive stop lug boss 48 is provided on keycap 1；The metal scissor mutually supported is limited by the key positive stop lug boss 48 of scissors disconnecting prevention structure and keycap 1 to be cooperated, and key is prevented to deviate from or keycap 1 is limited in limes superiors position；The metal scissor is made of scissor 31 outside scissor 28 in metal, metal, the scissors lower plane 17 of scissor 28 is located at the outside of plane 19 on scissors in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of plane 19 on scissors, plane 19 is connected by length bending edges 36 on the scissors lower plane 17, scissors, length direction of the length bending edges 36 along scissor arm 23；Distance L between 36 both ends of the surface of length bending edges of scissor 28 in the L1 >=metal of the distance between the length flanging upper surface 42 of the outer scissor 31 of the metal and the middle cross face 40 of plane 19 on scissors, when the keycap is installed, the auxiliary section of keycap 1 and key positive stop lug boss 48 force metal plate elasticity plate face 20 to generate flexible deformation, scissors disconnecting prevention structure crosses the adapted space that key positive stop lug boss 48 enters the auxiliary section of keycap 1, under the reset force effect of reset element, scissors disconnecting prevention structure is crushed on the key positive stop lug boss 48 of keycap 1, and keycap 1 is limited in limes superiors position at this time.

Including keycap, reset element, the switching circuitry for having switch, the support plate for having auxiliary section, the scissor for having upper and lower auxiliary section, scissor is rotated or is slidably connected with the auxiliary section of keycap, support plate respectively by upper and lower auxiliary section, and scissor passes through mutual Between power transmitting constitute synchronous interaction support construction, make elevating movement to ensure that keycap is parallel to support plate, it is characterized in that: metal scissor punch forming on metal plate；The metal scissor forms flexible metal plate elasticity plate face 20；The metal scissor has stamping forming scissors disconnecting prevention structure；Key positive stop lug boss 48 is provided on keycap 1；The metal scissor mutually supported is limited by the key positive stop lug boss 48 of scissors disconnecting prevention structure and keycap 1 to be cooperated, and key is prevented to deviate from or keycap 1 is limited in limes superiors position；When installation, the auxiliary section of keycap 1 and key positive stop lug boss 48 force metal plate elasticity plate face 20 to generate flexible deformation, scissors disconnecting prevention structure crosses the adapted space that key positive stop lug boss 48 enters the auxiliary section of keycap 1, under the reset force effect of reset element, scissors disconnecting prevention structure is crushed on the key positive stop lug boss 48 of keycap 1, and keycap 1 is limited in limes superiors position at this time；The metal scissor is rotated or is slidably connected by the auxiliary section of thickness and keycap between scissors upper end upper face 56 and scissors upper end lower face 57；The scissors lower plane 17 of scissor 28 is located at the outside of plane 19 on scissors in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of plane 19 on scissors, plane 19 is connected by length bending edges 36 on the scissors lower plane 17, scissors, length direction of the length bending edges 36 along scissor arm 23；Distance L between 36 both ends of the surface of length bending edges of scissor 28 in the L1 >=metal of the distance between the length flanging upper surface 42 of the outer scissor 31 of the metal and the middle cross face 40 of plane 19 on scissors.

Including keycap, elastomer, there is the switching circuitry of switch contact, there is the support plate of auxiliary section, there is the scissor of upper and lower auxiliary section, scissor by upper and lower auxiliary section respectively with keycap, the auxiliary section of support plate connects, the end of the scissors lower plane 17 of the lower face with another scissor of plane 19 mutually supports on the scissors of one of scissor, the transmitting for forming mutual power constitutes synchronous interaction support construction, make elevating movement to ensure that keycap is parallel to support plate, it is characterized in that: the scissors lower plane 17 of scissor 28 is located at the outside of plane 19 on scissors in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of plane 19 on scissors, the scissors lower plane 17, plane 19 is connected by length bending edges 36 on scissors, the length bending edges 36 are along scissors The length direction of foot arm 23；Distance L between 36 both ends of the surface of length bending edges of scissor 28 in the L1 >=metal of the distance between the length flanging upper surface 42 of the outer scissor 31 of the metal and the middle cross face 40 of plane 19 on scissors.

Further, the reset element is elastomer, the switching circuitry for having switch is the switching circuitry for having switch contact.

Further, there is reinforcing rib in scissors on the scissors of the metal scissor on the ora terminalis of the middle part through hole of plane 19, in scissors reinforcing rib by reinforcing flange 39 in II of scissor 31 outside metal, in metal scissor 28 I in reinforce flange 35 and constitute.

Further, having outer reinforcement flange 44 on the edge of the left and right sides of plane 19 on the scissors of the outer scissor 31 of the metal.

Further, plane 19 also passes through width folding surface 38 on the scissors lower plane 17 of the metal scissor, scissors Connection, the scissors lower plane 17 of scissor 28 is located at the outside of length bending edges 36 and the downside of width folding surface 38 in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of length bending edges 36 and the downside of width folding surface 38, and the scissors lower plane 17 of the metal scissor is all connected with as an integral face.

Further, the metal plate elasticity plate face 20 that the metal scissor has, there is the metal plate cantilever limiting block 21 being stamped and formed out in the cantilever end of metal plate elasticity plate face 20, the scissors disconnecting prevention structure is made of metal plate cantilever limiting block 21, and the metal plate cantilever limiting block 21 cooperates with the limit of key positive stop lug boss 48.

Further, having the molding scissors lower end bending edges 26 of punching press scissor plate face in the outside in metal scissors underfooting portion, scissors lower end lower face 59 is located at the lower surface of the bending part of scissors lower end bending edges 26, scissors lower end lower face 59 is arc surface, upper surface in the scissors lower end lower face 59 of arc surface and the plane of support plate 15 or the switching circuitry 12 for having switch contact cooperates, and support portion 59 is the arc surface in metal scissors underfooting portion under scissors.

Further, the auxiliary section of thickness and keycap between the scissors upper end upper face 56 of metal scissor and the scissors upper end lower face 57 of metal scissor rotates or is slidably connected, the auxiliary section of keycap 1 is made of key back-off cambered surface 46, key boss convex shoulder 45, key disconnecting prevention structure, at planar, scissors upper end upper face 56, scissors upper end lower face 57 are slidably matched with key boss convex shoulder 45, key back-off cambered surface 46 respectively for scissors upper end upper face 56, scissors upper end lower face 57.

Further, the scissors lower plane 17 is an entirety, the interior scissors support portion 18, outer scissors support portion 30 are located at the corner of the upper end of scissors lower plane 17, end face extend plate face 41 cantilever end end face corner, the corner of the upper end of the scissors lower plane 17 of the interior scissors support portion 18, outer scissors support portion 30 lower face of the corner respectively with plane 19 on the lower face of plane 19 on the scissors of outer scissors support portion 30, interior 18 scissors of scissors support portion of the end face cantilever end end face that extends plate face 41 mutually support composition to synchronize support construction.

Further, having interior scissors by bit space 34 below the interior upper plane lower end surface 33 of plane 19 on the scissors that scissor 28 is connect with length bending edges 36 in the metal, when keycap is in limit inferior position, the middle cross face 40 of plane 19 enters interior scissors by bit space 34 on the scissors of the outer scissor 31 of the metal.

Further, the interior upper plane lower end surface 33 of plane 19 is through the punching section of plate face on the scissors of scissor 28 in the metal.

Further, the length bending edges 36 of scissor 28 and the length direction of scissor arm 23 are at an acute angle in metal, plane 19 is tapered downward on the scissors of 36 inside of length bending edges；The length bending edges 36 and the length direction of scissor arm 23 of the outer scissor 31 of metal are at an acute angle, and plane 19 is tapered downward on the scissors in 36 outside of length bending edges.

The positive effect of the present invention is:

Using the scissor of length bending edges 36:

Intensity, the rigidity of scissor arm greatly improve, and make to become a reality using thinner metal material production scissor, such as using thick Degree 0.15mm aluminium alloy scissor can meet requirement.

1, using thickness 0.15mm aluminium alloy scissor, scissor weight is reduced to 0.049g, and compared with existing plastics scissor (weight is about 0.06g), scissor weight reduces about 18%.Than reducing about 78% using the scissor weight of width bending edges 24.

2, scissor thickness is thinned, and the low level of keyboard is furthermore achieved.

3, scissor thickness is thinned, molding scissor craftsmanship more preferable (such as radius bend is smaller, bending rebound is smaller) and the material cost for reducing production scissor.

4, the length and width dimensions of the more compact structure of scissor, scissor further reduce, and can produce keyboard of the keycap having a size of 14.8*14.8.

The good effect of flexible metal plate elasticity plate face 20 is formed using metal scissor:

1, keycap 1 becomes non-maintaining full rigidity structure, significantly reduces the factory fraction defective of keycap 1, and thoroughly solve existing keyboard of notebook computer in use, falling the hard nut to crack of key.

2, the elastic spacing structural elasticity of thin sheet of metal scissor is good, intensity is high, can increase the magnitude of interference (maximum reachable 0.5mm) of limit, makes the limit of keycap and thin sheet of metal scissor cooperation high reliablity.

3, the elastic spacing structure of thin sheet of metal scissor is without injection defect.

4, the elastic spacing structure of thin sheet of metal scissor is not in the hidden danger of fracture failure deformation failure.

5, the low level design of keycap can be further realized.

6, the mating surface and scissors disconnecting prevention structure of metal scissor 16 and keycap are provided separately and (are independently arranged scissors disconnecting prevention structure), it is in simple planar for making the plate face of metal scissor 16 and the mating surface of keycap, this, without processing, improves cooperation precision and machining accuracy in planar plate face (the punching press number of metal plate more multi-processing precision is poorer, and i.e. metal plate plastic deformation institute's number more multi-processing precision is poorer)；It is realized using the upper and lower smooth straight plate face of scissor 16 and is cooperated with the face face of keycap, support plate respectively, cooperation precision greatly improved, improve the wearability between each part, key switch is durable.

The good effect of the auxiliary section of thickness and keycap is passed through using metal scissor:

Cooperate 1. being realized respectively using the upper and lower smooth plate face of scissor 16 with the face face of keycap, support plate, cooperation precision greatly improved.The wearability between each part is improved, key switch is durable.

2. reducing the material cost of scissor 16 at double using the scissor 16 of thickness ultrathin, the thickness of aluminium alloy scissor 16 is thinned by present 0.4mm as 0.15mm；The thickness of steel scissor 16 is thinned by present 0.4mm as 0.08mm.

4. eliminating the chamfer angle technique in corner, the Sheet Metal Forming Technology of scissor 16 is simplified.

5. reducing the thickness of scissor 16 at double using the scissor 16 of thickness ultrathin, further realizing key low level.

6. the auxiliary section of keycap is arranged using key back-off mating surface 3c and key cooperation plane 3b along the width direction of key, that is key back-off mating surface 3c is located at by key cooperation plane 3b, when thoroughly solving the scissor 16 using thickness ultrathin, the auxiliary section of keycap can not be molded the problem of production because the spacing between key back-off mating surface 3c and key cooperation plane 3b is too small.

Limiting block 3a is erect with the key back-off mating surface 3c key being linked together 7. eliminating, and key position limiting structure is independently arranged, the key back-off mating surface 3c opening of keycap inwardly, and is that completely new installation of the real sorcerer's keycap in limes superiors position creates condition in key back-off mating surface 3c setting front bevel.(the existing key switch using plastics scissor 16, when plastics scissor 16 is located at limit inferior position, keycap realizes installation)

The key switch of the scissor 16 of face face cooperation can be widely applied to computer keyboard, palmtop computer, all kinds of embedded keyboards and carrying out and stroke the key switch of operation.The present invention reduces the material cost of scissor 16 at double, simplifies the Sheet Metal Forming Technology of scissor 16, and the cooperation precision of each part greatly improved, improve the wearability between each part.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the drawings to be used in the description of the embodiments or prior art will be briefly described below, apparently, drawings in the following description are some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the composite structural diagram of existing 16 constructional device of plastics scissor an of keycap；

Fig. 2 is the annexation figure of existing 16 constructional device of plastics scissor an of keycap；

Fig. 2-1 is the installation process figure of an existing keycap；

Fig. 2-2 is the installation process figure of an existing keycap；

Fig. 2-3 is the installation process figure of an existing keycap；

Fig. 2-4 is the installation process figure of an existing keycap；

Fig. 2-5 is the installation process figure of an existing keycap；

Fig. 3-1 is the cross-sectional view that an existing key apparatus is located at limes superiors position；

Fig. 3-2 is the cross-sectional view that an existing key apparatus is located at limes superiors position；

Fig. 3-3 is the cross-sectional view that Fig. 3-1 is located at limit inferior position；

Fig. 3-4 is the cross-sectional view that Fig. 3-2 is located at limit inferior position；

Fig. 3 is a kind of perspective view of existing interior scissor for having width bending edges；

Fig. 4 is a kind of perspective view of existing outer scissor for having width bending edges；

Fig. 5 is the assembling stereogram of Fig. 3, Fig. 4；

Fig. 6 is that of the invention have scissor perspective view in the length bending edges parallel with the length direction of shear arm；

Fig. 7 is that of the invention have scissor perspective view outside the length bending edges parallel with the length direction of shear arm；

Fig. 8 is the main view of Fig. 6；

Fig. 9 is the main view of Fig. 7；

Figure 10 is the assembling stereogram of Fig. 8, Fig. 9；

Figure 11 is that of the invention have with the length direction of shear arm into scissor perspective view in the length bending edges of angle；

Figure 12 is that of the invention have with the length direction of shear arm into scissor perspective view outside the length bending edges of angle；

Figure 13 is the main view of Figure 11；

Figure 14 is the main view of Figure 12；

Figure 15 is the assembling stereogram of Figure 11, Figure 12:

Figure 16 a is the interior scissor perspective view for having width bending edges and length bending edges of the invention；

Figure 16 b is the outer scissor perspective view for having width bending edges and length bending edges of the invention；

Figure 16 is another assembling stereogram of the invention；

Figure 17 a is the perspective view of rigid key cap of the invention；

Figure 17 is the cross-sectional view of key installation process；

Figure 18 is the cross-sectional view of key installation process；

Figure 19 is the cross-sectional view of key installation process；

Figure 20 is the cross-sectional view of key installation process；

Figure 21 is the cross-sectional view of key installation process；

Figure 22 is the cross-sectional view of key installation process；

Figure 23 is the cross-sectional view at the end of key installation；

Figure 24 is the cross-sectional view at the end of key installation；

Figure 25 is the cross-sectional view at the end of key installation；

Figure 26 is the cross-sectional view at the end of key installation；

Figure 27 is a kind of perspective view of interior scissor of the invention；

Figure 28 is a kind of perspective view of outer scissor of the invention；

Figure 29 is the outer scissor of thin sheet of metal that metal plate elasticity plate face 20 of the invention extends to the left；

Figure 30 is scissor in thin sheet of metal that metal plate elasticity plate face 20 of the invention extends to the left；

Figure 31 is the outer scissor of thin sheet of metal of metal plate elasticity plate face 20 of the invention；

Figure 32 is scissor in the thin sheet of metal of metal plate elasticity plate face 20 of the invention；

Figure 33 is scissor outside thin sheet of metal that metal plate elasticity plate face 20 of the invention extends to from left to right；

Figure 34 is scissor in thin sheet of metal that metal plate elasticity plate face 20 of the invention extends to from left to right；

Figure 35 is the sectional view of rigid key cap of the invention；

Figure 36 is the perspective view of rigid key cap of the invention；

Figure 37 is the key apparatus of scissor general assembly completion of the invention in the perspective view of limes superiors position；

Figure 38 is the main view of key apparatus of the invention；

Figure 39 is the D-D cross-sectional view of Figure 20；

Figure 40 is the B-B cross-sectional view of Figure 20；

Figure 41 is the C-C cross-sectional view of Figure 20；

Figure 42 is the procedure chart of Figure 21 decline；

Figure 43 is the procedure chart of Figure 22 decline.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.

Embodiment 1

Such as Figure 10, Figure 15, shown in Figure 16, the present invention includes keycap (not shown), reset element 11, there is the switching circuitry 12 of switch, there is the support plate 15 of auxiliary section, there is the scissor 16 of upper and lower auxiliary section, scissor 16 by upper and lower auxiliary section respectively with keycap 1, the auxiliary section of support plate 15 connects, the end of the scissors lower plane 17 of the lower face and another scissor 16 of plane 19 mutually supports on the scissors of one of scissor 16, the transmitting for forming mutual power constitutes synchronous interaction support construction, make elevating movement to ensure that keycap is parallel to support plate, the reset element of the present embodiment is that (existing reset element can be spring to flexible rubber bullet circle, magnetic element etc.), the switching circuitry for having switch of the present embodiment is the thin film switch circuit for having switch contact.

Scissors lower plane 17 is an entirety, and the outer scissor 31 of scissor 28, metal rotates or is slidably connected with 1 (not shown) of keycap, support plate 15 respectively in metal；The corner buttresses auxiliary section 18 of scissor 28 in metal, scissor arm 23 lower face constitute synchronous interaction support construction with the mutually support of the lower face of the scissor arm 23 of scissor 31, corner buttresses auxiliary section 18 forms mutual power outside metal transmitting respectively, make elevating movement to ensure that keycap is parallel to support plate.

As Fig. 6-Figure 16 metal scissor 16 is made of scissor 31 outside scissor 28 in metal, metal, metal scissor 16 has scissors lower plane 17, plane 19 on scissors, the scissors lower plane 17 of scissor 28 is located at the outside or outside and downside of plane 19 on scissors in metal, and the scissors lower plane 17 of the outer scissor 31 of metal is located at the inside of plane 19 or interior on scissors Side and downside, plane 19 is connected by length bending edges 36 or is connected by length bending edges 36, width folding surface 38, length direction of the length bending edges 36 along scissor arm 23 on scissors lower plane 17, scissors.

Such as distance L between 36 both ends of the surface of length bending edges of scissor 28 in the L1 >=metal of the distance between the length flanging upper surface 42 of scissor 31 and the middle cross face 40 of plane 19 on scissors outside Fig. 8-Fig. 9 metal.

As Fig. 6-Figure 10 metal scissor 16 scissors on plane 19 middle part through hole ora terminalis on have reinforcing rib in scissors, in scissors reinforcing rib by reinforcing flange 39 in II of scissor 31 outside metal, in metal scissor 28 I in reinforce flange 35 and constitute.

As Fig. 6-Figure 16 metal scissor has metal plate elasticity plate face 20, metal plate elasticity plate face 20 is located at the middle position on metal scissor top, metal scissor top is divided into left and right two parts by the cantilever notch through hole 20a of 20 left and right sides of metal plate elasticity plate face, in the metal plate cantilever limiting block 21 that the cantilever end of metal plate elasticity plate face 20 has bending to be formed, metal plate cantilever limiting block 21 is deviate from keycap (not shown) with limitation keycap is merged.

If the length bending edges 36 of scissor 28 and the length direction of scissor arm 23 are at an acute angle in Figure 11-Figure 15 metal, plane 19 is tapered downward on the scissors of 36 inside of length bending edges；The length bending edges 36 and the length direction of scissor arm 23 of the outer scissor 31 of metal are at an acute angle, and plane 19 is tapered downward on the scissors in 36 outside of length bending edges.

As the scissors lower plane 17 of Figure 16 a Figure 16 b scissor 28 is located at the outside of length bending edges 36 and the downside of width folding surface 38, the scissors lower plane 17 of the outer scissor 31 of metal is located at the inside of length bending edges 36 and the downside of width folding surface 38, and the scissors lower plane 17 of the metal scissor is all connected with as an integral face.There is outer reinforcement flange 44 on the edge of the left and right sides of plane 19 on the scissors of the outer scissor 31 of metal.

As having interior scissors by bit space 34 below upper plane lower end surface 33 in plane 19 on scissor 28 is connect with length bending edges 36 in Figure 11-Figure 12 metal scissors, when keycap is in limit inferior position, the middle cross face 40 of plane 19 enters interior scissors by bit space 34 on the scissors of the outer scissor 31 of metal.

If Figure 15 is when keycap is in limit inferior position, the upper and lower end face of the length bending edges 36 of scissor 28 enters the outer scissors accommodation space of the outer scissor 31 of metal in institute's metal.36 upper surface of length bending edges of the outer scissor 31 of metal is corresponding with the lower end surface position of scissor 28 in metal.

As plane 19 is also connected by width folding surface 38 on the scissors lower plane 17 of Fig. 7, Fig. 9, Figure 16 metal scissor 16, scissors.Metal scissor 16 has scissors lower plane 17, plane 19 on scissors, the scissors lower plane 17 of scissor 28 is located at 19 outside of plane and downside on scissors in metal, the scissors lower plane 17 of the outer scissor 31 of metal is located at the inside and downside of plane 19 on scissors, and plane 19 is connected by length bending edges 36, width folding surface 38 on scissors lower plane 17, scissors.There is bending to cross through hole 37 in length bending edges 36,38 intersection of width folding surface.

It is ensured that: on the length flanging upper surface 42 of the outer scissor 31 of metal and scissors between the middle cross face 40 of plane 19 36 upper surface of length bending edges of scissor 28 distance L between width folding surface 38 in distance L1 >=metal.

It is ensured that: the 36 length L of length bending edges of scissor 28 in the L1 >=metal of the distance between the length flanging upper surface 42 of the outer scissor 31 of metal and middle cross face 40 of plane 19 on scissors.

Plane 19 is also connected by width folding surface 38 on the scissors lower plane 17 of metal scissor, scissors, metal uses the scissor of length bending edges 36: intensity, the rigidity of scissor arm greatly improve, make to become a reality using thinner metal material production scissor, requirement such as can be met using thickness 0.15mm aluminium alloy scissor.

[0035] embodiment 2

Referring to Figure 17 a-- Figure 26, the punch forming on metal plate of metal scissor；Metal scissor forms flexible metal plate elasticity plate face 20；Metal scissor has stamping forming scissors disconnecting prevention structure；Key positive stop lug boss 48 is provided on keycap 1；The metal scissor mutually supported is limited by the key positive stop lug boss 48 of scissors disconnecting prevention structure and keycap 1 to be cooperated, and key is prevented to deviate from or keycap 1 is limited in limes superiors position.

The upper auxiliary section of metal scissor 16 is made of scissors upper end lower face and scissors upper end upper face, the scissors disconnecting prevention structure being independently arranged, and the key back-off cambered surface 46 on the upper key back-off boss of scissors upper end lower face and keycap 1 cooperates.

Rigid key positive stop lug boss 48 is respectively arranged with referring to the near middle of concave bottom surface 49 in Figure 17 a, the key between two auxiliary sections on the left side of keycap 1 and between two auxiliary sections on the right, key positive stop lug boss 48 is made of key end spacing auxiliary section 50, the sleeping installation guide surface 51 of key, the sleeping installation guide part of key is made of the sleeping installation guide surface 51 of key, the sleeping installation guide part of key can be plane, cambered surface, corner etc..

In two auxiliary sections on the left side of keycap 1, (two auxiliary sections are respectively arranged with concave and convex platform 47 in key on the bottom surface perpendicular to concave bottom surface 49 in the key between the arrangement of paper direction and between two auxiliary sections on the right, the auxiliary section of keycap 1 is made of the key boss convex shoulder 45 in key in concave and convex platform 47, key back-off cambered surface 46, and the opening of the adapted space of the auxiliary section of keycap 1 is directed to the middle part of keycap 1.

Referring to Figure 17 -- when Figure 26, keycap installation, the sleeping installation guide part interaction of the cantilever and key of metal plate elasticity plate face 20, Metal plate elasticity plate face 20 generates flexible deformation, metal plate limiting block 21 crosses key positive stop lug boss 48, under the reset force effect of reset element, metal plate limiting block 21 is crushed in the key end spacing auxiliary section 50 of the key positive stop lug boss 48 of keycap 1, and keycap 1 is limited in limes superiors position at this time.

Referring to Figure 17 -- when Figure 19, keycap installation, by the upper auxiliary section of the entrance alignment metal scissor 16 of the auxiliary section of keycap, the mounting height H of metal scissor 16 supported, it is ensured that L10 > L11, keycap is moved down, 47 surface of concave and convex platform is moved to the opening in the portion 3 that is slidably matched of keycap 1 along key from inside to outside for the upper end of metal scissor 16.The upper end of metal scissor 16 concave and convex platform 47 in the key of concave bottom surface 49 or keycap 1 along the key of keycap 1, slips into the auxiliary section of keycap 1 from inside to outside.

After the upper auxiliary section (lower face that the present embodiment is the upper face of metal scissor 16, metal scissor 16) of metal scissor 16, which enters key, is buckled to the open space of cambered surface 46 and key boss convex shoulder 45, the upper end of the metal plate limiting block 21 of the cantilever end of metal plate elasticity plate face 20 gradually starts to contact with the sleeping installation guide surface 51 of the key of key positive stop lug boss 48 (the sleeping installation guide part of key).

Referring to fig. 2 0-- Figure 22, continue to move down keycap, continue to slide from inside to outside in the upper end of metal scissor 16, it is moved along the sleeping installation guide surface 51 of key the upper end of the metal plate limiting block 21 of metal scissor 16, the lower face of metal scissor 16 moves (the present embodiment along key back-off cambered surface 46, the portion 3 that is slidably matched of keycap 1 is made of key boss convex shoulder 45, key back-off cambered surface 46), in the case where the portion 3 that is slidably matched of keycap 1, the sleeping installation guide surface 51 of key act on, metal plate elasticity plate face 20 is made to generate flexible deformation.

3-- Figure 26, the scissors disconnecting prevention structure being made of metal plate limiting block 21 cross the limit adapted space that key positive stop lug boss 48 enters keycap 1 referring to fig. 2, the limit adapted space of keycap 1 is located at 50 outside of key end spacing auxiliary section, under the reset force effect of reset element (not shown), metal plate limiting block 21 is crushed in the key end spacing auxiliary section 50 on key positive stop lug boss 48, keycap 1 is in limes superiors position at this time, the metal scissor 16 mutually supported is limited by the key end spacing auxiliary section 50 of metal plate limiting block 21 and keycap 1 to be cooperated, and keycap 1 is limited in limes superiors position.

6, metal plate limiting block 21 and key end spacing auxiliary section 50 limit magnitude of interference maximum up to 0.5mm referring to fig. 2.

The mating surface and scissors disconnecting prevention structure of metal scissor 16 and keycap are provided separately and (are independently arranged scissors disconnecting prevention structure), it is in simple planar for making the plate face of metal scissor 16 and the mating surface of keycap, this, without processing, improves cooperation precision and machining accuracy in planar plate face (the punching press number of metal plate more multi-processing precision is poorer, and i.e. metal plate plastic deformation institute's number more multi-processing precision is poorer)；It is realized using the upper and lower smooth straight plate face of scissor 16 and is cooperated with the face face of keycap, support plate respectively, cooperation precision greatly improved, improve the wearability between each part, key switch is durable.

The upper auxiliary section of metal scissor 16 is made of straight plate face and the scissors disconnecting prevention structure being independently arranged, the machining accuracy for simplifying the Sheet Metal Forming Technology of metal scissor 16, improving metal scissor 16.

The present invention provides a kind of elasticity of plastics position limiting structure eliminated on plastics keycap 1, plastics keycap 1 is set to become full rigidity structure, and by elastic spacing structure setting on thin sheet of metal scissor, thoroughly solves the hard nut to crack that existing keyboard of notebook computer falls key, make the high yield rate, durable of the keycap of key switch, and makes that the elastic spacing structural elasticity of the thin sheet of metal scissor of key switch is good, intensity is high, durable.

1, keycap becomes non-maintaining full rigidity structure, significantly reduces keycap factory fraction defective, and thoroughly solve existing keyboard of notebook computer using when fall the hard nut to crack of key.

3, elastic spacing structure of the elastic spacing structure of thin sheet of metal scissor without injection defect, thin sheet of metal scissor is not in the hidden danger of fracture failure deformation failure.

4, the low level design of keycap can be further realized.16 structural strength of scissor and the rigidity of structure greatly improve, and metal scissor realizes miniaturization that is ultralight, ultra-thin and further realizing key apparatus.

Remaining is same with embodiment 1.

Embodiment 3

Referring to fig. 27, metal scissor top is divided into left and right two parts by Figure 28, the cantilever notch through hole 20a near metal scissor upper center, there is the plate face upwardly extended in the lower end base of cantilever notch through hole 20a, the plate face upwardly extended constitutes metal plate elasticity plate face 20, and the metal plate elasticity plate face 20 is located at the middle position on metal scissor top.

(not indicated in this conceptual scheme), the plate face that this can also be upwardly extended is widened, the plate face of the metal scissor on the left of cantilever notch through hole 20a and right side is subtracted narrow, make on the left of cantilever notch through hole 20a and the plate face of the metal scissor on right side has elasticity, on the left of cantilever notch through hole 20a and the plate face of the metal scissor on right side also can be considered metal plate elasticity plate face 20, metal plate limiting block 21 is still located at the cantilever end of the plate face upwardly extended (this scheme is equal with above scheme at this time, maximum difference is: the plate face that this is upwardly extended is widened, by the plate face of the metal scissor on the left of cantilever notch through hole 20a and right side subtract it is narrow after, the elasticity that the plate face of the metal scissor in the left side cantilever notch through hole 20a and right side has is better than the elasticity of the plate face upwardly extended).

In the metal plate cantilever limiting block 21 that the cantilever end of metal plate elasticity plate face 20 has bending to be formed, the metal plate cantilever limiting block 21 is deviate from keycap with limitation keycap is merged.

As Figure 29, Figure 30, metal plate scissor 16 left and right end face between, and nearby there is the cantilever notch through hole 20a through 16 plate face of metal plate scissor in close 16 upper surface of metal plate scissor, in the metal plate elasticity plate face 20 that the oriented other end in the left side of cantilever notch through hole 20a or right side extends, in the metal plate cantilever limiting block 21 that the cantilever end of metal plate elasticity plate face 20 has bending to be formed.

[0092] such as the left and right end face of Figure 31, Figure 32, the rigid connection metal plate scissor 16 of metal plate elasticity plate face 20, metal plate cantilever limiting block 21 is located in metal plate elasticity plate face 20, but it is best for being located in the middle part of metal plate elasticity plate face 20 with metal plate cantilever limiting block 21.Scissors disconnecting prevention structure is made of gear 52 after metal plate limiting block 21, metal plate limit, keeps off 52 round and smooth connections after metal plate limiting block 21 and metal plate limit.

Such as Figure 33, Figure 34, between the left and right end face of metal plate scissor 16, and there is the cantilever notch through hole 20a through 16 plate face of metal plate scissor close to 16 top of metal plate scissor, in the metal plate elasticity plate face 20 that the oriented other end in the left side of cantilever notch through hole 20a or right side extends, the cantilever end of metal plate elasticity plate face 20 is formed with metal plate limiting block 21, metal plate limiting block 21 can be the plate face of the cantilever end of metal plate elasticity plate face 20, it can be the plate face of the cantilever end of metal plate elasticity plate face 20 upwardly extended, it can also be the bending plate face of the cantilever end of metal plate elasticity plate face 20, it is the plate face of the cantilever end of metal plate elasticity plate face 20 upwardly extended that the present embodiment, which uses metal plate limiting block 21,.

Metal plate elasticity plate face 20 is bent downward, and metal plate elasticity plate face 20 and the plate face of metal scissor 16 extend at angle；The angle that metal plate elasticity plate face 20 and the plate face of metal scissor 16 are formed is about between 90 degree ± 0 degree to 90 degree ± 20 degree, and metal plate elasticity plate face 20 is set as two, but can also set metal plate elasticity plate face 20 to one, but is best to be arranged two.

(not shown) when installation, the key positive stop lug boss 48 or so of the inner side end of two metal plate limiting blocks 21 and keycap 1 erects side (not to be indicated in figure, key positive stop lug boss 48 or so two erects side in beloid trapezoidal, erect side and constitute key setting installation guide part in the trapezoidal left and right two of key positive stop lug boss 48) contact, when pushing keycap 1, key positive stop lug boss 48 or so, which erects side, makes two metal plate limiting blocks 21 generate bullet change, metal plate limiting block 21 crosses 48 (not shown) of key positive stop lug boss, under the reset force effect of reset element (not shown), metal plate limiting block 21 is crushed on 50 (not shown) of key end spacing auxiliary section of the key positive stop lug boss 48 of keycap 1, keycap 1 is limited in limes superiors position at this time.

[0098] such as Figure 29 --- when Figure 34, installation, the end of metal plate elasticity plate face 20 and key erect installation guide part interaction, metal plate elasticity plate face 20 generates flexible deformation, metal plate limiting block 21 crosses 48 (not shown) of key positive stop lug boss, under the reset force effect of reset element (not shown), metal plate limiting block 21 is crushed on 50 (not shown) of key end spacing auxiliary section of the key positive stop lug boss 48 of keycap 1, and keycap 1 is limited in limes superiors position at this time.

Remaining is same with embodiment 2.

Embodiment 5

On bottom surface referring to concave bottom surface in Figure 35, Figure 36, the keycap between two auxiliary sections of the width direction of keycap 1, it is respectively arranged with the key positive stop lug boss 48 of each rigidity around, wherein medium position of the key positive stop lug boss 48 between two paragraph key auxiliary section boss 47, key positive stop lug boss 48, key auxiliary section boss 47, keycap 1 auxiliary section arrange in the width direction.

Keycap disconnecting prevention structure is made of key positive stop lug boss 48, has positive stop lug boss to be oriented to the face Dou 51, key on the inside of key positive stop lug boss 48 Key positive stop lug boss end 50 is provided on the outside of positive stop lug boss 48.

Key auxiliary section boss 47 raises upward to form square boss out of keycap on the bottom surface of concave bottom surface, in the corner of the outside the boss for the key auxiliary section boss 47 for being located at left side, right side, (corner can not chamfering, can also chamfering, but it is best with rounding arc) formed key boss convex shoulder 45.The key auxiliary section boss 47 of keycap 1 is located between two key back-off boss 53, and there is key boss convex shoulder 45 in the outside of key auxiliary section boss 47；The auxiliary section of keycap 1 is made of key back-off cambered surface 46, key boss convex shoulder 45, key positive stop lug boss 48, there is the back-off front bevel 54 of back-off auxiliary section, the Dou that inclines on the back-off surface of key back-off boss 53, key positive stop lug boss 48 is higher than key auxiliary section boss 47, and back-off auxiliary section is made of key back-off cambered surface 46.

Referring to Figure 37 -- there is the cantilever notch through hole 20a through plate face between the auxiliary section of Figure 43 metal scissor 16, there is the metal plate elasticity plate face 20 upwardly extended in the bottom of cantilever notch through hole 20a, metal plate elasticity plate face 20 bends downward extension, has the cantilever spring limiting block 21 of metal plate that (the present embodiment is upward) bending metal plate is formed upward or downward in the cantilever end of metal plate elasticity plate face 20.

Metal scissor 16 is rotated or is slidably connected by the auxiliary section of thickness and keycap between the scissors upper end upper face 56 of metal scissor 16 and the scissors upper end lower face 57 of metal scissor 16.

The auxiliary section of keycap 1 is made of key back-off cambered surface 46, key boss convex shoulder 45, key disconnecting prevention structure, at planar, scissors upper end upper face 56, scissors upper end lower face 57 are slidably matched with key boss convex shoulder 45, key back-off cambered surface 46 respectively for scissors upper end upper face 56, scissors upper end lower face 57.

There are the molding scissors lower end bending edges 26 of punching press scissor plate face in the outside of 16 lower part of metal scissor, scissors lower end lower face 59 is located at the lower surface of the bending part of scissors lower end bending edges 26, scissors lower end lower face 59 is arc surface, in the upper surface cooperation (the present embodiment is used to be cooperated with the upper surface of switching circuitry 12) of the scissors lower end lower face 59 of arc surface and the plane of support plate 15 or the switching circuitry 12 for having switch contact, support portion 59 is the arc surface of 16 lower part of metal scissor under scissors.

The lower auxiliary section of metal scissor 16 in planar scissors lower end upper face 58, in support portion 59 under the scissors of arc surfaced by constituting, wherein, scissors Lower bearing portions 59 and the cooperation of the upper face of support plate 15 cooperate with the upper surface of switching circuitry, and the key back-off cambered surface 46 on the bending edges of scissors lower end upper face 58 and support plate 15 cooperates.

It is realized using the upper and lower smooth plate face (at planar, two plate face is without processing for such as scissors upper end upper face 56, scissors upper end lower face 57) of scissor 16 and is cooperated with the face face of keycap, support plate respectively, cooperation precision greatly improved.The wearability between each part is improved, key switch is durable.

Scissor 16 is realized to be cooperated with the face face of keycap, support plate, is made to become a reality using the scissor 16 of thickness ultrathin, is reduced the material cost of scissor 16 at double, the thickness of aluminium alloy scissor 16 is thinned by present 0.4mm as 0.15mm；The thickness of steel scissor 16 is thinned by present 0.4mm as 0.08mm.

The realization of face face cooperation, eliminates the chamfer angle technique in the boss corner of existing metal scissor, simplifies the Sheet Metal Forming Technology of scissor.

Using the scissor 16 of thickness ultrathin, the thickness of scissor 16 is reduced at double, the lower auxiliary section of the low high metal scissor 16 of key is further realized by constituting in planar scissors lower end upper face 58, in support portion 59 under the scissors of arc surfaced, by the plate face bending at left and right sides of the lower end of metal scissor 16, with the auxiliary section forming face face of support portion 59 and support plate 15 under the scissors in planar scissors lower end upper face 58 and arc planar, cooperation precision and machining accuracy are improved.

Remaining is same with embodiment 2.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, and any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of invention.

Claims

A kind of key switch using ultra-thin extra small metal scissor of the invention includes keycap, reset element, the switching circuitry for having switch, the support plate for having auxiliary section, the scissor for having upper and lower auxiliary section, scissor is rotated or is slidably connected with the auxiliary section of keycap, support plate respectively by upper and lower auxiliary section, scissor constitutes synchronous interaction support construction by the transmitting of mutual power, make elevating movement to ensure that keycap is parallel to support plate, it is characterized in that: metal scissor punch forming on metal plate；The metal scissor forms flexible metal plate elasticity plate face 20；The metal scissor has stamping forming scissors disconnecting prevention structure；Key positive stop lug boss 48 is provided on keycap 1；The metal scissor mutually supported is limited by the key positive stop lug boss 48 of scissors disconnecting prevention structure and keycap 1 to be cooperated, and key is prevented to deviate from or keycap 1 is limited in limes superiors position；The metal scissor is made of scissor 31 outside scissor 28 in metal, metal, the scissors lower plane 17 of scissor 28 is located at the outside of plane 19 on scissors in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of plane 19 on scissors, plane 19 is connected by length bending edges 36 on the scissors lower plane 17, scissors, length direction of the length bending edges 36 along scissor arm 23；Distance L between 36 both ends of the surface of length bending edges of scissor 28 in the L1 >=metal of the distance between the length flanging upper surface 42 of the outer scissor 31 of the metal and the middle cross face 40 of plane 19 on scissors, when the keycap is installed, the auxiliary section of keycap 1 and key positive stop lug boss 48 force metal plate elasticity plate face 20 to generate flexible deformation, scissors disconnecting prevention structure crosses the adapted space that key positive stop lug boss 48 enters the auxiliary section of keycap 1, under the reset force effect of reset element, scissors disconnecting prevention structure is crushed on the key positive stop lug boss 48 of keycap 1, and keycap 1 is limited in limes superiors position at this time.
A kind of key switch using ultra-thin extra small metal scissor of the invention includes keycap, reset element, the switching circuitry for having switch, the support plate for having auxiliary section, the scissor for having upper and lower auxiliary section, scissor is rotated or is slidably connected with the auxiliary section of keycap, support plate respectively by upper and lower auxiliary section, scissor constitutes synchronous interaction support construction by the transmitting of mutual power, make elevating movement to ensure that keycap is parallel to support plate, it is characterized in that: metal scissor punch forming on metal plate；The metal scissor forms flexible metal plate elasticity plate face 20；The metal scissor has stamping forming scissors disconnecting prevention structure；Key positive stop lug boss 48 is provided on keycap 1；The metal scissor mutually supported is limited by the key positive stop lug boss 48 of scissors disconnecting prevention structure and keycap 1 to be cooperated, and key is prevented to deviate from or keycap 1 is limited in limes superiors position；When installation, the auxiliary section of keycap 1 and key positive stop lug boss 48 force metal plate elasticity plate face 20 to generate flexible deformation, scissors disconnecting prevention structure crosses the adapted space that key positive stop lug boss 48 enters the auxiliary section of keycap 1, under the reset force effect of reset element, scissors disconnecting prevention structure is crushed on the key positive stop lug boss 48 of keycap 1, and keycap 1 is limited in limes superiors position at this time；The metal scissor is rotated or is slidably connected by the auxiliary section of thickness and keycap between scissors upper end upper face 56 and scissors upper end lower face 57；The scissors lower plane 17 of scissor 28 is located at the outside of plane 19 on scissors in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of plane 19 on scissors, plane 19 is connected by length bending edges 36 on the scissors lower plane 17, scissors, length direction of the length bending edges 36 along scissor arm 23；On the length flanging upper surface 42 of the outer scissor 31 of the metal and scissors in the distance between middle cross face 40 of plane 19 L1 >=metal between 36 both ends of the surface of length bending edges of scissor 28 Distance L.
A kind of key switch using ultra-thin extra small metal scissor of the invention includes keycap, elastomer, there is the switching circuitry of switch contact, there is the support plate of auxiliary section, there is the scissor of upper and lower auxiliary section, scissor by upper and lower auxiliary section respectively with keycap, the auxiliary section of support plate connects, the end of the scissors lower plane 17 of the lower face with another scissor of plane 19 mutually supports on the scissors of one of scissor, the transmitting for forming mutual power constitutes synchronous interaction support construction, make elevating movement to ensure that keycap is parallel to support plate, it is characterized in that: the scissors lower plane 17 of scissor 28 is located at the outside of plane 19 on scissors in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of plane 19 on scissors, the scissors lower plane 17, plane 19 is logical on scissors Cross the connection of length bending edges 36, length direction of the length bending edges 36 along scissor arm 23；Distance L between 36 both ends of the surface of length bending edges of scissor 28 in the L1 >=metal of the distance between the length flanging upper surface 42 of the outer scissor 31 of the metal and the middle cross face 40 of plane 19 on scissors.
Such as claim 3, a kind of key switch using ultra-thin extra small metal scissor, it is characterized in that: the reset element is elastomer, the switching circuitry for having switch is the switching circuitry for having switch contact.
Such as claims 1 or 2 or a kind of 3 or 4, key switch using ultra-thin extra small metal scissor, it is characterized in that: there is reinforcing rib in scissors on the scissors of the metal scissor on the ora terminalis of the middle part through hole of plane 19, in scissors reinforcing rib by reinforcing flange 39 in II of scissor 31 outside metal, in metal scissor 28 I in reinforce flange 35 and constitute.
Such as claims 1 or 2 or a kind of 3 or 4, key switch using ultra-thin extra small metal scissor, it is characterized in that: having outer reinforcement flange 44 on the edge of the left and right sides of plane 19 on the scissors of the outer scissor 31 of the metal.
Such as claims 1 or 2 or a kind of 3 or 4, key switch using ultra-thin extra small metal scissor, it is characterized in that: plane 19 is also connected by width folding surface 38 on the scissors lower plane 17 of the metal scissor, scissors, the scissors lower plane 17 of scissor 28 is located at the outside of length bending edges 36 and the downside of width folding surface 38 in the metal, the scissors lower plane 17 of the outer scissor 31 of the metal is located at the inside of length bending edges 36 and the downside of width folding surface 38, and the scissors lower plane 17 of the metal scissor is all connected with as an integral face.
Such as claims 1 or 2 or a kind of 3 key switch using ultra-thin extra small metal scissor, it is characterized in that: the metal plate elasticity plate face 20 that the metal scissor has, there is the metal plate cantilever limiting block 21 being stamped and formed out in the cantilever end of metal plate elasticity plate face 20, the scissors disconnecting prevention structure is made of metal plate cantilever limiting block 21, and the metal plate cantilever limiting block 21 cooperates with the limit of key positive stop lug boss 48.
Such as claims 1 or 2 or a kind of 3 key switch using ultra-thin extra small metal scissor, it is characterized in that: having the molding scissors lower end bending edges 26 of punching press scissor plate face in the outside in metal scissors underfooting portion, scissors lower end lower face 59 is located at the lower surface of the bending part of scissors lower end bending edges 26, scissors lower end lower face 59 is arc surface, upper surface in the scissors lower end lower face 59 of arc surface and the plane of support plate 15 or the switching circuitry 12 for having switch contact cooperates, and support portion 59 is gold under scissors Belong to the arc surface of scissor lower part.
Such as claims 1 or 2 or a kind of 3 key switch using ultra-thin extra small metal scissor, it is characterized in that: the auxiliary section of thickness and keycap between the scissors upper end upper face 56 of metal scissor and the scissors upper end lower face 57 of metal scissor rotates or is slidably connected, the auxiliary section of keycap 1 is made of key back-off cambered surface 46, key boss convex shoulder 45, key disconnecting prevention structure, at planar, scissors upper end upper face 56, scissors upper end lower face 57 are slidably matched with key boss convex shoulder 45, key back-off cambered surface 46 respectively for scissors upper end upper face 56, scissors upper end lower face 57.
Such as claims 1 or 2 or a kind of 3 key switch using ultra-thin extra small metal scissor, it is characterized in that: the scissors lower plane 17 is an entirety, the interior scissors support portion 18, outer scissors support portion 30 is located at the corner of the upper end of scissors lower plane 17, end face extends the corner of the cantilever end end face of plate face 41, the corner of the upper end of the scissors lower plane 17 of the interior scissors support portion 18, the end face of outer scissors support portion 30 extends the corner of the cantilever end end face of plate face 41 lower face with plane 19 on the scissors of outer scissors support portion 30 respectively, the lower face of plane 19 mutually supports composition synchronous interaction support construction on interior 18 scissors of scissors support portion.
Such as claims 1 or 2 or a kind of 3 key switch using ultra-thin extra small metal scissor, it is characterized in that: having interior scissors by bit space 34 below the interior upper plane lower end surface 33 of plane 19 on the scissors that scissor 28 is connect with length bending edges 36 in the metal, when keycap is in limit inferior position, the middle cross face 40 of plane 19 enters interior scissors by bit space 34 on the scissors of the outer scissor 31 of the metal.
Such as claim 12, a kind of key switch using ultra-thin extra small metal scissor, it is characterized in that: the interior upper plane lower end surface 33 of plane 19 is through the punching section of plate face on the scissors of scissor 28 in the metal.
Such as claims 1 or 2 or a kind of 3, key switch using ultra-thin extra small metal scissor, it is characterized in that: the length bending edges 36 of scissor 28 and the length direction of scissor arm 23 are at an acute angle in metal, plane 19 is tapered downward on the scissors of 36 inside of length bending edges；The length bending edges 36 and the length direction of scissor arm 23 of the outer scissor 31 of metal are at an acute angle, and plane 19 is tapered downward on the scissors in 36 outside of length bending edges.