WO2018059600A1

WO2018059600A1 - Key switch device for improving key drawing force

Info

Publication number: WO2018059600A1
Application number: PCT/CN2017/105198
Authority: WO
Inventors: 陈�峰
Original assignee: 陈�峰
Priority date: 2016-09-30
Filing date: 2017-10-01
Publication date: 2018-04-05

Abstract

A key switch device for improving a key drawing force, comprising a key cap (1), a resetting member, a switch circuit (12), a support bottom plate (15) having an engagement portion, and a scissor leg support (16) having upper and lower engagement portions; the scissor leg support (16) is connected to the key cap (1) and the engagement portion of the support bottom plate (15) by means of the upper and lower engagement portions, respectively; the scissor leg support (16) forms a synchronous linkage support structure by means of force transmissions therebetween, so as to ensure that the key cap (1) moves up and down while remaining parallel to the support bottom plate (15); the key cap (1) is provided with an independent key cap detachment-prevention portion, and the independent key cap detachment-prevention portion is provided with a key yielding space (1h); the scissor leg support (16) is provided with a scissor upper limiting position portion; when the key cap (1) is at the upper limiting position, the key cap detachment-prevention portion limiting engages with the scissor upper limiting position portion, and the scissor upper limiting position portion enters the key yielding space (1h). The key switch device has a wide range of applications in computer keyboards, handheld computers, various embedded keyboards and key switch devices for key-hitting operations.

Description

Key switch device for improving key pull-out force

Priority statement:

The claims of claim 1 and claim 1 of the present invention claim priority to claim 10 of the invention patent application of the application No. 2016110685606 to the Chinese national intellectual property, and the priority of the corresponding embodiment;

The dependent claims of claim 1 and claim 1 of the present invention and the dependent claims of claim 1 and claim 1 of the invention patent application No. 2017103613275 filed on the Japanese National Intellectual Property No. Priority of the embodiment;

Claims

2 and 2 of the Invention Patent Application No. 2016110685606, the priority of which is assigned to the Chinese National Intellectual Property No. right;

Claims

2 and 2 of claim 2 and claim 2 of the invention patent application No. 2017103613275, the priority of which is hereby incorporated by reference. Priority of the embodiment;

Claim 3 of the present invention and the claims of the invention patent application No. 2016108717276, which is filed on Sep. 30, 2016, to the Chinese National Intellectual Property Rights, and the priority of the corresponding embodiments;

The claims of the present invention and the claims of the invention patent application of the application No. 2016108644627, the priority of which is hereby incorporated by reference in its entirety in its entirety in

Technical field

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.

Background technique

Referring to FIG. 1 and FIG. 2, the key structure device of the prior keyboard includes a key cap 1, a rubber elastic ring 11, a membrane switch circuit 12, a support bottom plate 15 having a fitting portion, a scissor foot support 16 having an upper and lower fitting portion, and a scissor foot support. 16 is rotated or slidably connected to the mating portions of the keycap 1 and the supporting bottom plate 15 respectively through the upper and lower fitting portions, and the scissor-foot supporting 16 which is X-shaped from the side view constitutes a synchronous linkage supporting structure by the mutual force transmission between the central portions, Make sure that the key cap moves up and down parallel to the support base plate 15.

The switch circuit uses a commonly used membrane switch circuit 12, that is, a membrane switch piece, and the switch circuit can be any detection device capable of detecting a key press.

The device is hinged by a central pivot 5 on the right scissor foot 4 made of plastic and a central hole on the left scissor leg 8 made of plastic, and the lower hinge shaft 9 and the lower shaft 7 respectively rotate with the pivot portion of the support plate on the support base 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 upper scissors sliding portion 6 and the keycap sliding portion 3 and the key cap rotating portion of the key cap 1 respectively 2 is a sliding fit and a rotary fit to form a plastic X support structure device, and the key cap 1 is lifted up by a round elastic body-rubber elastic ring 11, and the linkage portion of the left scissor foot 8 and the right scissor foot 4 is The pivot shaft 5 located near the middle of the scissor arm and the pivot hole 5c are respectively configured to rotate; the connecting portions of the left scissor base 8 and the right scissor base 4 respectively connected to the keycap 1 and the support base 15 are respectively distributed at the upper end of the scissor arm or The upper end of the scissors upper rotating portion 10, the lower shaft 7, the upper scissors sliding portion 6, and the lower hinge shaft 9, the reset body is composed of an elastic body, the elastic body is composed of a rubber elastic ring 11, and the reset body can also be a common metal elastic piece and Springs, reset bodies can also be used with commonly used magnetic bodies that are mutually disassembled.

Referring to FIG. 2, the mating portion of the keycap 1 is composed of a keycap sliding portion 3 or a keycap rotating portion 2, wherein the keycap sliding portion 3 is composed of a key vertical limiting position 3a, a key reverse matching surface 3c, and a key matching plane 3b. The key upright limiter 3a, the key upset mating face 3c, the key mating plane 3b are smoothly connected together, the keycap rotating part 2 is opened downward, the rotation of the keycap rotating part 2 is matched with the rotating shaft 2a and the upper rotating part 10 of the scissors The mating portion of the key cap 1 is composed of a key cap supporting portion, an inverted engaging portion, and a key cap retaining portion. The key cap supporting and engaging portion is formed by the key engaging plane 3b and the rotating matching arc 2a, and the inverted engaging portion is composed of a key The reverse snap fit surface 3c and the rotation matching arc 2a are formed, and the key cap retaining portion is composed of a key upright limit gear 3a and a rotation matching arc 2a.

The scissors upper sliding portion 6 of the plastic left scissor foot 8 is restricted by the upper and lower positions of the key reverse matching surface 3c and the key matching plane 3b. When the key cap 1 moves up and down, the upper slide portion 6 of the scissors is turned over. When the button cap 1 slides in the space between the button mating surface 3c and the key mating plane 3b, the upper cap of the scissor portion of the keycap 1 is pressed against the key when the keycap 1 acts without the external force. In the position gear 3a, at this time, the keycap 1 is at the upper limit position, and the key reverse fitting surface 3c, the key fitting plane 3b, and the key upright limit gear 3a of the mating portion of the existing keycap 1 are all disposed in the same structure.

Referring to Figure 2, since the birth of the keyboard, although the cost of the notebook keyboard is much higher than that of the desktop keyboard, the notebook keyboard has long-term application with ultra-thin and good hand feeling. The existing notebook keyboard has a tendency to further pursue low height, and the current notebook keyboard The key cap is as thin as 1.65mm thick, and has reached the limit. The height deviation of each key of a keyboard is ≦0.4.

How to improve the precision of the scissor foot support and improve the performance of the keyboard while high-efficiency production and cost reduction are urgent problems to be solved in the notebook computer keyboard.

Referring to FIG. 3, FIG. 4 and FIG. 5, the key switch device (not shown in the figure) of the support structure of the sheet metal scissor foot has the scissor foot support with the upper and lower fitting portions, and the scissor foot support is respectively connected with the key cap by the upper and lower fitting portions, The mating portions of the supporting bottom plate are connected, and the scissor foot supports form a synchronous linkage supporting structure by the mutual force transmission to ensure that the key cap moves up and down parallel to the supporting bottom plate.

The mating portion of the keycap 1 is composed of a key shoulder 1b and an inverted key reverse fitting portion 1c. The upper end of the scissor foot support 16 upper upper plate surface 16L and the upper scissors lower plate surface 16k and the key shoulder 1b and the key respectively The inverted buckle fitting portion 1c is slidably fitted; the scissor foot support 16 is stamped and formed by a metal plate surface, and the upper limit portion of the scissors is limited by the scissors 16d and the cantilevered elastic upper cantilever 16c The scissor foot support 16 is composed of a metal outer scissor leg 16a and a metal inner scissor leg 16b, and the lower end upper plate 16j of the scissor cooperates with the sub-buckle lower plate 15c under the cantilever of the strut cantilever plate 15b; the scissor foot supports the extension plate surface 16g, the end surface of the extension plate surface 16g of the extension plate surface 16g, the plate surface of the scissors foot arm 16f and the plate surface of the scissors foot arm 16f supported by the other scissors foot, and the end of the extension plate surface 16g The end plate corners 16e of the portions are pulled apart from each other to form a mutual support structure.

----See 2015101866538 for details.

Through years of research and development, compared with the plastic scissors feet, the advantage of the sheet metal scissors is very obvious. For example, the sheet metal scissors feet have good rigidity, high strength and durability, and the thickness of the sheet metal scissors is ultra-thin and further realizes the low height of the keys.

Existing plastic scissor feet support the problem of the keyboard:

One of the matching parts of the scissor foot support and the keycap is only 0.14mm on one side, and the support of the scissor foot and the aluminum substrate (supporting bottom plate 15) is only 0.2mm on one side, and the keyboard is generally composed of an aluminum substrate and a circuit board. The main reasons for the poor elastic or pull-out force of the keyboard keycap are as follows: 1. Poor feeding, such as deformation of the aluminum substrate hook, shaft breakage of the scissors support frame or There are defects and collapses in the inner and outer scissors equipped with the keycap structure, the four corners of the keycap and the inner and outer scissors fittings (that is, the written name of the water droplet hole and the chute structure) are poor; 2. The assembly is poor, for example, during the assembly process. Man-made or assembled mechanical equipment damages the keyboard or keycap structure.

The above two points cause the lack of elastic or pulling force of the keyboard keycap or the lack of elastic force, which will directly cause the keyboard to be finished, which will seriously affect the service life of the keyboard and the mechanical feel of the keyboard. Therefore, after the key cap is mounted on the keyboard, in order to ensure the reliability of subsequent use, it is necessary to test the pull-out force of the keyboard keycap after assembly. The upper left corner of the normal keyboard key cap "A" key to the nearest two adjacent sides of 3mm, the normal pull force is f, the range is 280g <f <320g (the key cap pull force test press module And the key cap pull force test machine application number CN201510726534.7)

Existing sheet metal scissors foot support problems:

The key device of the existing sheet metal scissor support has the problem that the pulling force is not up to standard (the keycap pull force of the keyboard of the existing injection scissors is 280g<f<320g, so that the key device supported by the sheet metal scissor foot cannot enter the market. .

Summary of the invention

The object of the present invention is to solve the problem of the key device supported by the above-mentioned sheet metal scissor foot. The present invention increases the branch opening limiting portion and the supporting plate retaining portion on the supporting bottom plate 15 and designs the key cap as a metal key bracket. The key combination is added to the keycap anti-off part to make the space 1h, which completely solves the problem of insufficient force of drawing the keycap and completely eliminates the problem of the key drop of the existing keyboard.

The technical solution of the present invention is implemented as follows: a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, and a scissor foot support having an upper and lower mating portion, and the scissor foot support is respectively connected to the key cap and the support bottom plate through the upper and lower mating portions The connection of the mating parts, The scissor foot support constitutes a synchronous linkage support structure by mutual force transmission, so as to ensure that the key cap is parallel to the support base plate for lifting movement, the key cap 1 is provided with an independent keycap anti-off part, and the key cap anti-off part is provided with a key The space is 1h; the scissor foot support is provided with a scissor upper limit portion; when the key cap 1 is at the upper limit position, the key cap anti-off portion is matched with the upper limit portion of the scissors, and the upper limit portion of the scissors enters the key letting space 1h.

The utility model comprises a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, and a scissor foot support having an upper and lower matching portion, wherein the scissor foot support is respectively connected with the mating portions of the key cap and the support bottom plate through the upper and lower fitting portions, and the scissor foot supports each other The transmission of force constitutes a synchronous linkage support structure to ensure that the keycap moves parallel to the support base plate, the scissor foot support 16 is formed by metal, and the lower end of the scissor foot support 16 is provided with an independent scissor retaining portion on the support base plate 15. There is a separate support plate anti-off part, and a support plate anti-off space is arranged below the support plate anti-off part, the support plate anti-off space can accommodate the scissors anti-off part; after the scissor foot support 16 is installed, the key cap moves up and down The anti-off part of the scissors is located in the anti-separation space of the supporting plate, and the anti-offing part of the scissors corresponds to the position of the limiting surface of the anti-off part of the supporting plate. When the key cap is subjected to the upward pulling force, the anti-off part of the scissors and the supporting plate are prevented from coming off The limiting surface of the portion is matched to prevent the scissor foot support 16 from coming out of the mating portion of the support base plate 15.

The utility model comprises a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, and a scissor foot support having an upper and lower matching portion, wherein the scissor foot support is respectively connected with the mating portions of the key cap and the support bottom plate through the upper and lower fitting portions, and the scissor foot supports each other The transmission of the force constitutes a synchronous linkage support structure to ensure that the key cap is moved up and down parallel to the support base plate, and the mating portion of the support base plate 15 is supported by the support plate, the reverse snap fit portion on the support plate 15b and at least one The limiting portion of the supporting plate is formed, the limiting portion of the supporting plate is formed by pressing, and the limiting portion of the supporting plate is provided with a limiting arc surface of the supporting plate; the lower plate upper surface 16j of the scissors cooperates with the inverted engaging portion of the supporting bottom plate 15, the scissors foot The lower limit portion of the support of the support 16 is matched with the limit arc surface of the support plate on the support portion of the support plate, and the support portion of the support plate is supported by the lower support portion of the scissors; the center of the limit curved surface of the support plate is located at the adjacent support bottom plate 15 The reverse buckle is fitted near the part.

The utility model comprises a key cap, a reset body, a switch circuit, a support bottom plate having a matching portion, and a scissor foot support having an upper and lower matching portion, and the scissor foot support is rotated or slidably connected to the joint portion of the key cap and the support bottom plate through the upper and lower fitting portions, respectively, the scissors foot The support constitutes a synchronous linkage support structure by the mutual force transmission, so as to ensure that the key cap is parallel to the support base plate for lifting movement, and the mating portion of the key cap 1 is composed of a keycap support fitting portion, an inverted engagement portion and a key limit structure; The keycap 1 is composed of an I key assembly 1e and an II key assembly 1d. The I key assembly 1e is fixedly connected to the II key assembly 1d. The I key assembly 1e is located above the II key assembly 1d. The II key assembly 1d is formed by sheet metal stamping.

Further, the key cap is provided with a key cap retaining portion, the key cap retaining portion is provided with a key limiting portion 1g, the inner side of the key limiting portion 1g is provided with a key letting space 1h; the upper limit portion of the scissors is limited by the scissors The position gear 16d is configured; when the key cap 1 is in the upper limit position, the scissors limit gear 16d is engaged with the key limit portion 1g, and the upper portion of the scissors limit gear 16d enters the key let space 1h. Or the entry button along the extension line of the scissors limit block 16d makes the bit space 1h.

Further, the key cap is provided with a keycap retaining portion, the key cap retaining portion is provided with a key limiting portion 1g, the inner side of the key limiting portion 1g is provided with a key letting space 1h; and the upper limit portion of the scissors is cut by a hole The upper end surface 16u is formed by a lower plate surface supported by a scissor foot near the upper end surface 16u of the shear hole or by a plate surface supporting the bent side 16r; the upper portion of the scissor foot support is provided with a cut through hole 16q penetrating through the plate surface, The upper end face 16u of the cut hole is located at a punched section of the upper portion of the cut through hole 16q.

Further, the shearing through hole 16q supported by the scissor foot is located in the vicinity of the supporting length of the scissor foot and near the upper supporting bending edge 16r, or the shearing through hole 16q supported by the scissor foot penetrates a part of the supporting bending arc 16s, or the scissors The shearing through-hole 16q of the foot support penetrates the supporting bending arc 16s, so that the upper end surface 16u of the shearing hole becomes a part of the supporting bending edge 16r.

Further, the key cap 1 is composed of an I key component 1e and an II key component 1d, wherein the I key component 1e is fixedly connected with the II key component 1d, the I key component 1e is located above the II key component 1d, and the II key component 1d is made of sheet metal. In the press forming, the keycap retaining portion of the keycap 1 is located on the II key assembly 1d.

Further, the keycap retaining portion is composed of a cantilever key supporting sheet metal cantilever 1f, a key restricting portion 1g, and a key letting space 1h, and the key letting space 1h is located above the key supporting sheet metal cantilever 1f.

Further, the key cap 1 of the key switch device is provided with a key cap anti-off part, and the key cap anti-off part is composed of a cantilever key support sheet metal cantilever 1f, and the upper portion of the scissor foot support is provided with a cut through hole 16q, a key cap 1 After the installation is completed, a part of the key supporting sheet metal cantilever 1f or the key supporting sheet metal cantilever 1f and the key restricting portion 1g of the key supporting sheet metal cantilever 1f are located in the cut through hole 16q.

Further, the support base plate 15 is provided with a support plate limiting portion, and the support plate limiting portion is composed of a support side limit portion or a branch opening limit portion and a combination thereof.

Further, the branch opening limiting portion is located inside the cantilever end of the strut cantilever plate 15b in the x direction, and the side limiting portion is located on the outer side of the strut cantilever plate 15b of the supporting bottom plate 15 along the z direction.

Further, the support side limit portion and the branch opening limit portion are respectively provided with a support plate limit arc surface, the branch opening limit portion is formed by the branch opening flange 15i, and the support plate limit arc surface is supported by the branch opening flange 15i The upper branch opening II is formed by the arc limit 15h.

Further, the support side limiting portion is formed by an upwardly bent side bend side 15f located on the side outer side of the support plate cantilever plate 15b in the z direction, and the support plate limit curved surface is supported by the side bend side 15f. The support plate is bent by 15g.

Further, the key switch device is provided with a scissor foot support 16, the scissor foot support 16 is provided with a scissor support arc 16h, the scissor lower support arc 16h is formed by a bend shear side bend 16i, and the scissor foot support 16 is attached to the scissors. The lower support arc 16h and the support plate bending arc 15g are the same center, and the scissors support arc 16h constitutes the lower support portion of the scissors.

Further, the key switch device is provided with a scissor foot support 16, the scissor foot support 16 is provided with a scissor support arc 16h, the scissor lower support arc 16h is formed by a bend shear side bend 16i, and the scissor foot support 16 is attached to the scissors. Lower support arc 16h and The circular arc of the 15g arc of the support plate is congruent or nearly equal, and the lower support section of the scissors is formed by the lower support arc 16h of the scissors.

Further, the key switch device is provided with a scissor foot support 16, the support plate arc surface is formed by the branch opening II arc limit 15h, and the scissors lower limit portion on the scissor foot support 16 is composed of the shear II limit surface 16y, wherein The branch opening II limit arc 15h is matched with the cut II limit surface 16y limit.

Further, the key switch device is provided with a scissor foot support 16, the support plate limiting portion is formed by the branch opening limiting portion, the branch opening limiting portion is formed by the branch opening flange 15i, and the branch opening flange 15i is provided with a support plate limit. The arc surface of the support plate is formed by the support opening I arc 15j of the branch opening 15i and the branch opening II arc 15h. The lower limit of the scissors on the scissor foot support 16 is cut by the I limit surface 16yy. The shearing limit surface 16y is formed, wherein the branch opening I limit arc 15j and the shear I limit surface 16yy limit fit, the branch opening II arc limit 15h and the shear II limit surface 16y limit fit, the branch opening I limit arc The center of 15j is located in the vicinity of the contact point between the lower support portion of the scissors and the support portion of the support plate.

Further, the distance L between the support limiting portion and the cantilever end of the support cantilever plate 15b is ≥ the thickness B of the scissor support 16.

Further, the limit arc surface of the support plate is composed of the branch opening II limit arc 15h, and the center of the branch opening II arc limit 15h is located near the contact point of the lower support portion of the scissors and the support portion of the support plate or the center of the support is located at the adjacent support bottom plate. The reverse fitting portion of the 15 is between the support bottom plate 15.

Further, the center of the branch opening I limiting arc 15j or the branch opening II limiting arc 15h is located between the inverted engaging portion of the adjacent supporting bottom plate 15 and the supporting bottom plate 15.

Further, the branch opening II arc 15h is located on the branch opening flange 15i, and the large plane of the branch opening flange 15i cooperates with the scissors foot support 16 with a small gap to restrict the movement of the scissor foot support 16 in the Z direction.

Further, the center of the support bending arc 15g is located between the inverted engaging portion of the adjacent supporting bottom plate 15 and the supporting bottom plate 15 in the vicinity of the inverted engaging portion of the supporting plate 15b.

Further, the engaging portion of the supporting bottom plate 15 is composed of a supporting plate supporting portion, an inverted engaging portion on the supporting cantilever plate 15b, and at least one supporting portion of the supporting plate, and the limiting portion of the supporting plate is formed by punching and bending; The limiting portion of the plate is composed of a limiting arc surface of the supporting plate, and the limiting arc surface of the supporting plate is formed by a bending arc 15g of the supporting plate formed when the bending edge 15f of the forming side is bent, and the bending edge 15f of the supporting side is bent upward and is located at the branch. Next to the plate cantilever plate 15b.

Further, the key switch device is provided with a retaining plate retaining portion, and the retaining plate retaining portion is formed by the supporting and retaining preventing block 15e, and the supporting plate retaining space is constituted by the supporting plate preventing and disclosing space 15d.

Further, the key switch device is provided with a scissor foot support 16 , and the scissor foot support 16 is provided with a scissor anti-off part, and the scissor anti-off part is formed by a cantilever bent side formed by punching and bending at the lower end of the scissor foot support 16 .

Further, the scissor anti-off part is composed of a scissor anti-off plate 16m formed by press-bending at the lower end of the scissor-leg support 16 .

Further, at the lower end of the scissor foot support 16, a scissor anti-skid plate 16m is formed by punching and bending, and a scissor recessed space 16z is arranged on the scissor anti-off plate 16m.

Further, the scissor retaining portion is formed by a cut end flange 16i formed by press bending at the lower end of the scissor foot support 16.

Further, the retaining portion of the supporting plate is formed by the supporting and retaining limiter 15e, and the supporting and retaining limiting member 15e is located on the supporting cantilever plate 15b, and the supporting and retaining limiting member 15e is extended from the supporting plate cantilever plate 15b in the Z direction. The support is formed by an anti-offset 15e formed by a boss.

Further, the: the retaining portion of the supporting plate is formed by the supporting and retaining limiter 15e, and the supporting and retaining limiting member 15e is formed by the bent side formed by the upper punching and bending of the supporting bottom plate 15, and the supporting and preventing the limiting block 15e is located along the Z Between the two supporting base plates 15 in the direction.

Further, in the vicinity of the cantilever end of the support cantilever plate 15b, which is located on the inner side in the x direction below the support release limiter 15e, a support space 15k, a support space 15k and a support plate clearance space 15d are provided. Connected.

Further, the keycap 1 is in the upper limit position under the support of the scissor foot support 16, and the upper limit angles of the scissor foot support 16 with respect to the support base plate 15 are respectively an angle and a b angle; when mounted, the scissor foot support 16 respectively or At the same time, from the position greater than a angle and greater than the angle b, the joint portion of the support bottom plate 15 is rotated, and the scissors anti-off portion enters the support space 15k under the support release limit 15e, and then rotates into the support and prevent the limit block. The anti-separation space 15d of the support plate under the 15e, after the rotation is completed, the anti-offset portion of the scissors corresponds to the position of the limiting surface of the anti-removal limiter 15e. After the key switch device is installed, the scissor-foot support 16 is opposite to the support base plate 15. The upper limit angle is within the angle a and b, respectively. When the keycap 1 is subjected to the upward pulling force, the retaining limit stop 15e prevents the scissor foot support 16 from coming out of the mating portion of the support base 15.

Further, the engaging portion of the supporting bottom plate 15 is composed of a supporting plate supporting portion, an inverted engaging portion on the supporting cantilever plate 15b, and at least one supporting portion of the supporting plate, and the limiting portion of the supporting plate is formed by punching and bending; The lower end of the scissor foot support 16 is provided with a scissor-preventing portion formed by stamping and bending, and a support anti-detachment limit 15e is arranged on the support bottom plate 15, and a support plate anti-department space 15d is arranged under the support anti-restriction limit 15e. The plate anti-separation space 15d can accommodate the scissors anti-off part; after the scissor foot support 16 is installed, the scissors anti-off part corresponds to the position of the limit surface of the anti-off-stop 15e, and when the key cap is subjected to the upward pulling force, the scissors The retaining portion cooperates with the limiting surface of the retaining and retaining stop 15e to prevent the scissor foot support 16 from coming out of the mating portion of the support base 15.

Further, the limiting portion of the supporting plate is formed by the limiting arc surface of the supporting plate, and the upper plate upper surface 16j of the scissors cooperates with the inverted engaging portion of the supporting bottom plate 15, and the scissor foot support 16 cooperates with the limiting plate curved surface of the supporting plate, the supporting plate The support portion is supported and supported by the lower support portion of the scissors. The inverted engagement portion of the support bottom plate 15 is formed by the support lower buckle lower plate 15c on the support plate suspension plate 15b, and the lower scissors support portion is formed by the lower plate surface of the lower end of the scissors foot support 16. The support portion of the support plate is constituted by the upper plate surface of the support base plate 15 or by the upper surface of the switch circuit.

Further, the key switch device is provided with an anti-offset limiter 15e, and a support plate inverted cantilever 15dd is formed on the support bottom plate 15, and the support plate inverted cantilever 15dd extends from the outside to the inside, and the support off-limit limit 15e is located on the support plate. The cantilever end of the cantilever 15dd, the anti-detachment limiter 15e is formed by the cantilever tail of the inverted support plate 15dd of the bending support, and a support plate clearance space 15d is provided below the support release limiter 15e.

Further, the upper end of the scissor foot support 16 is provided with an upper support bending edge 16r, and the support bending edge 16r is bent downward and at a certain angle with the large plane of the scissor foot support 16, and the support bending arc 16s is folded. The curved support edge 16r is formed; the support bending arc 16s of the scissor foot support 16 is supported by the lower surface of the keycap 1.

Further, the outer side of the scissor arm of the two scissor foot supports 16 is respectively formed with a large shear arm flange 16n and a small shear arm flange 16p. After the scissor foot support 16 is installed, one of the scissors legs supports the large shear arm of the 16 The flange 16n is fitted with a small gap of the small shear arm flange 16p of the other scissor foot support 16.

Further, the scissors anti-offlet plate 16m is connected and connected together to form a whole body; the anti-off-stopper 15e is connected and connected, and the support plate preventing space 15d disposed under the support and anti-offset 15e is connected, and the support plate is prevented from being separated. The 15d can accommodate the scissors anti-off part.

Further, the engaging portion of the supporting bottom plate 15 is composed of a supporting plate supporting portion, an inverted engaging portion on the supporting cantilever plate 15b, and at least one supporting portion of the supporting plate, and the limiting portion of the supporting plate is formed by punching and bending; The anti-offset portion of the plate is composed of an anti-off-stopper 15e, and the anti-separation space of the support plate is composed of a support preventing space 15d.

Further, the II key assembly 1d is stamped and formed with an I-bend flange 1k and a II-bend edge 1m, wherein the I-bend edge 1k is connected with the upper plane of the II key assembly 1d and forms a certain angle, and the II bend side 1m is connected with the I-bend side 1k and formed at a certain angle; the inverted-fitting portion is located near the inner end of the II-bend side 1m.

Further, the I-bend side 1k and the II-bend side 1m on the II key assembly 1d are all bent in the Y direction to form the Y-direction bent portion 1L, or the I-bend side 1k, II on the II key assembly 1d is folded. The bent side 1m is bent in the X direction to form the X-direction bent portion 1P; the cantilever end of the II bent side 1m is directed to the inner side of the key, and the inverted engaging portion is located near the inner end of the II bent side 1m.

Further, the inverted engaging portion is constituted by the key inverted engaging portion 1a, and the key inverted engaging portion 1a is located near the upper surface of the inner side end of the II bent side 1m in the X direction or at the inner side of the II bent side 1m in the X direction. Near the upper surface of the end, the opening of the keying space of the keycap 1 is directed to the middle of the keycap 1.

Further, an X-extension bent portion formed along the Z-direction bent side 1J is provided near the inner end of the II bent side 1 m, and the inverted engaging portion is located on the upper surface of the X-extended bent portion.

Further, the key cap 1 is provided with a key limit structure, the key limit structure is located on the II key assembly 1d, and the key cap retaining portion is located at the cantilever end of the independently disposed key support sheet metal cantilever 1f.

Further, the engaging portion on the II key assembly 1d is composed of a keycap supporting portion, a reverse engaging portion, and a keycap retaining portion; the keycap retaining portion is formed by an end surface of the cantilever end of the key supporting sheet metal cantilever 1f, and the key supporting portion The sheet metal cantilever 1f is located between the two inverted engaging portions, and the key setting sheet metal cantilever 1f is provided with a key letting space 1h; when the keycap of the key switch device is at the upper limit position, the scissors bending limit position 16b is pressed On the end face of the cantilever end of the key support cantilever 1f, the cantilever end of the scissors bending limit stop 16b enters the key above the key support cantilever 1f to make the space 1h.

Further, the I key component 1e is made of a transparent material, the lower surface of the I key component 1e is printed with the character and the ground color of the key cap 1, or the lower surface of the I key component 1e is plated with a metal film, and the character is hollowed out on the plated metal film.

Further, the keycap 1 is further provided with a III key assembly 1z, and the III key assembly 1z is located between the I key assembly 1e and the II key assembly 1d, and the I key assembly 1e, the III key assembly 1z, and the II key assembly 1d are fixedly connected.

Further, the engaging portion of the II key assembly 1d is composed of the first bent portion 1s, the second bent portion 1y, and the third bent portion 1v, wherein the first bent portion 1s is located at the two second bent portions 1y The first bent portion 1s and the second bent portion 1y are both formed by the press-formed folding arc plate 1x and the guide panel 1t; the folded portion 1x of the first bent portion 1s and the second bent portion 1x the matching arc plate 1x position corresponds and the corresponding folding arc plate 1x cooperates with the upper fitting portion of the scissor foot support, and the guiding panel 1t of the first bending portion 1s is folded with the arc plate 1x and the second bending portion 1y The guide panel 1t corresponds to the position and is inverted eight.

Further, the key limit structure of the keycap 1 is constituted by the separately provided key limit portion 1g.

Further, there is a chamfered guide portion 1k formed by the punching corner portion on the outer side of the middle portion of the II bending end 1g of the cantilevered end; the upper and lower sides of the upper end of the scissor foot support are stamped and formed with the upper scissors guiding portion 16a; When the II key assembly 1d is mounted, the inner surface of the scissor upper guide portion 16a supported by the scissor foot comes into contact with the chamfering guide portion 1k, and the inner surface of the scissor upper guide portion 16a is introduced into engagement with the outer end surface of the II bent side 1g. When the II key assembly 1d that has been mounted is moved up and down, the inner surface of the scissor upper guide portion 16a is engaged with the outer side surface of the II bent side 1g, and the II key assembly 1d is restricted from swinging left and right.

Further, the key switch device is provided with a key cap 1, and the key cap 1 is provided with a key cap support fitting portion, and the key cap support fitting portion is located on the lower plate surface of the II key assembly 1d.

The positive effects of the present invention are:

The invention completely solves the problem that the force of pulling the key cap is insufficient and completely eliminates the key drop problem of the existing keyboard.

1. Add a key on the anti-off part of the keycap to make the space 1h, which improves the pull-up force of the keycap;

2. The support bottom plate 15 is added with a support opening limit portion and a support plate anti-detachment portion, thereby further improving the key cap pull-out force;

3. The II key assembly 1d constituting the combined keycap is formed by sheet metal stamping, completely eliminating the problem of insufficient pull-out force of the key cap due to the injection molding defect of the existing keycap fitting portion (down-down structure), and at the same time, in the production process On the top, it is easier to add a bit space for 1h.

4.2 Eliminating the keycap pull-out force testing process of the existing keyboard, improving the production efficiency (key cap pull force test press Module and keycap pull force tester application number CN201510726534.7).

5. The matching part of the key cap (reverse structure) is set on the key II component 1d of the key, and the key key component 1d of the key is formed by sheet metal stamping, completely eradicating the existing injection molding key cap due to the common injection molding process, and the injection molding defect The deformation or breakage of the mating portion of the micro-inverted structure of the injection molded keycap makes the technique of dropping the injection keycap difficult to mention. It is understood that the keyless defect rate of the injection molded keycap of the keyboard is about 0.5% (from the production process to the sale). After the user's use of a total of 0.5% a year), the global shipment of keyboards in 2016 was 157 million, and the number of keyboards that were only lost due to the injection of keycaps in the world was about 7.86 million, resulting in huge resources; The use of stamping molding completely eliminates the injection molding defects of the injection molding process; the II key assembly 1d is formed by sheet metal stamping, completely eliminating the defect that the rotating joint portion of the keycap produced by the injection molding is easily broken, resulting in insufficient drawing force.

After the above-mentioned combination scheme is fully implemented, the pulling force of the key device supported by the sheet metal scissor foot is f≥900g, and the standard of the existing keyboard: 280g<f<320g) completely solves the problem that the existing keyboard is dropped.

Other positive effects of the combination key cap are:

1. The matching portion (reverse structure) of the key cap is disposed on the key member 1d of the key, and the reverse structure of the existing plastic keycap 1 is removed, the production process of the keycap 1 is simplified, and the mold cost is greatly reduced (1) A set of keyboards with a full set of key caps for the production of molds of about 1.2 million yuan / set). The injection mold for producing the existing key cap has four inverted bosses (see FIG. 1) and the key cap 1 has a small structure, and the injection mold has a complicated structure and high cost (the existing mold produces 64 keys per mold). The cap 1 requires a total of 4×64 inclined top mechanisms to form the inverted boss of the keycap 1 ), resulting in high mold cost; the invention adopts a combination key, and the I key component 1e can also adopt an injection molded key shell, and the injection key shell has no mating part. The utility model has a simple shell shape, reduces the height of the combined key cap, and simplifies the structure of the injection key shell and the structure of the injection mold, improves the production efficiency, and greatly reduces the mold cost;

2. I key assembly 1e can be used in a variety of materials (including injection molded key shells, transparent film, brushed stainless steel, etc.) ----- expressive;

3 realizes the ultra-low height of the combined keycap, and the combined keycap and the existing keycap are doubled in height;

4. Using stepping die to produce I key component 1e, II key component 1d, the production efficiency is improved by 92 times - 184 times;

5. The II key assembly 1d is formed by sheet metal stamping, completely eliminating the defect that the rotating joint portion of the keycap produced by the injection molding is easily broken.

The key switch device for improving the key pull-out force can be widely applied to a computer keyboard, a palm-sized computer, various embedded keyboards, and a key switch device for performing a keystroke operation. The strength and structural rigidity of the scissor foot support structure are greatly improved, the production energy consumption is low, the structural rigidity is high, the hand feel is better, the structural strength is high and durable, and the durability of the product and the quality of the product are improved.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are Some embodiments of the present invention can also be obtained from those skilled in the art without any creative work. Other drawings.

Figure 1 is a structural view of a conventional plastic scissor foot support structure device of a key cap;

2 is a connection diagram of a conventional plastic scissor foot support structure device of a key cap;

Figure 3 is a perspective view of a conventional sheet metal scissor foot support structure device;

Figure 4 is a side cross-sectional view of Figure 3;

Figure 5 is a side cross-sectional view of another position of Figure 3;

Figure 6 is a perspective view of a support plate retaining portion of the present invention;

Figure 7 is a perspective view showing the mounting process of the sheet metal scissor foot having the support plate limiting portion and the support plate retaining portion of the present invention;

Figure 8 is a perspective view showing the installation process of the sheet metal scissor foot having the support plate limiting portion and the support plate retaining portion of the present invention;

Figure 9 is a perspective view showing the mounting process of the sheet metal scissor leg having the support plate limiting portion and the support plate retaining portion of the present invention;

Figure 10 is a perspective view of the outer sheet metal scissor having the support plate limiting portion and the support plate retaining portion of the present invention installed in position;

Figure 11 is a perspective view of the inner sheet metal scissor of the support plate retaining portion and the retaining plate retaining portion of the present invention;

Figure 12 is a perspective view showing the mounting of the sheet metal scissor of the support plate retaining portion and the retaining plate retaining portion of the present invention;

Figure 13 is a perspective view showing the mounting process of the sheet metal scissor leg of the present invention having another plate limiting portion and a retaining plate retaining portion;

Figure 14 is a perspective view showing the mounting process of the sheet metal scissor leg of the present invention having another support plate limiting portion and a support plate retaining portion;

Figure 15 is a perspective view showing the mounting process of the sheet metal scissor foot of the other plate retaining portion and the retaining plate retaining portion of the present invention;

Figure 16 is a perspective view showing a keycap retaining portion provided on the combination keycap of the present invention;

Figure 17 is a cross-sectional view taken along line D-D of Figure 16;

Figure 18 is a cross-sectional view taken along line B-B of Figure 16;

Figure 19 is a cross-sectional view taken along line A-A of Figure 16;

Figure 20 is an enlarged partial cross-sectional view of Figure 16;

Figure 21 is a side cross-sectional view showing the keycap retaining portion of the plastic keycap of the present invention;

Figure 22 is a perspective view of a support plate of another support plate retaining portion and a retaining plate retaining portion of the present invention;

Figure 23 is a perspective view of the outer sheet metal scissor support of the support plate of Figure 22 mounted in position;

Figure 24 is a perspective view of the support of the sheet metal scissor support in the support plate of Figure 22;

Figure 25 is a perspective view of a support plate of another support plate retaining portion and a retaining plate retaining portion of the present invention;

Figure 26 is a perspective view of the outer sheet metal scissor support of the support plate of Figure 25 mounted in position;

Figure 27 is a perspective view of the support of the sheet metal scissor support in position on the support plate of Figure 25;

Figure 28 is a perspective view showing the support of two sheet metal scissor legs of the support plate of Figure 21 in place;

Figure 29 is a perspective view of the metal key bracket of the combination keycap of the present invention and the retaining portion of the metal key bracket;

Figure 30 is a perspective view of a key device to which the metal key bracket of Figure 29 is mounted;

Figure 31 is a cross-sectional perspective view of Figure 30;

Figure 32 is a perspective view of another cross-sectional view of Figure 30;

Figure 33 is a perspective view showing the support of the sheet metal scissor support of another limit structure of the present invention in place;

Figure 34 is a cross-sectional perspective view of Figure 33;

Figure 35 is a perspective view of a support base plate of another configuration of the present invention;

Figure 36 is a perspective view showing the support of the sheet metal scissor support of another limit structure of the present invention in place;

Figure 37 is a side elevational view of another limit structure of the present invention;

Figure 38 is a side elevational view of another limit structure of the present invention;

Figure 39 is a side elevational view of another limit structure of the present invention;

Figure 40 is a side elevational view of another limit structure of the present invention;

Figure 41 is a cross-sectional view showing the support member of another limit structure of the present invention in which the sheet metal scissor support is mounted in position and has a combination key;

Figure 42 is a partial enlarged view of Figure 41;

Figure 43 is a cross-sectional view showing another combination key of the present invention having a key letting space 1h;

Figure 44 is a partial enlarged view of Figure 43;

Figure 45 is a cross-sectional view showing a conventional keyless letting space 1h key device;

Figure 46 is a side view of another combination key of the keyless yield space 1h of the present invention;

Figure 47 is a partial enlarged view of Figure 46;

Figure 48 is a partial enlarged view of Figure 46;

Figure 49 is a perspective view of the key housing 1e of the present invention;

Figure 50 is a perspective view of the key holder 1d of the present invention;

Figure 51 is a perspective view of the key device mounted in place using the key bracket 1d of Figure 50;

Figure 52 is a side cross-sectional view of the key of Figure 51 in an upper position;

Figure 53 is a side cross-sectional view of the key of Figure 51 in the lowest position;

Figure 54 is a side cross-sectional view of the key of Figure 51 in an upper pole position;

Figure 55 is a side cross-sectional view of the key of Figure 51 in the lowest position;

Figure 56 is a perspective view of another key holder 1d of the present invention;

Figure 57 is a perspective view of the key device mounted in place using the key bracket 1d of Figure 56;

Figure 58 is a side view of Figure 57;

Figure 59 is a cross-sectional view of Figure 58;

Figure 60 is a cross-sectional view of Figure 58;

Figure 61 is a cross-sectional view of Figure 58;

Figure 62 is a perspective view of another key holder 1d of the present invention;

Figure 63 is a perspective view showing the combination of the key holder 1d of the present invention and the key housing 1e;

Figure 64 is a side cross-sectional view showing the support of the plastic scissors using the key holder 1d of Figure 62;

Figure 65 is a perspective view of Figure 64;

Figure 66 is a perspective view of a key device having a III key assembly 1z of the present invention;

Figure 67 is a perspective view of another key device of the present invention having a III key assembly 1z;

Figure 68 is a perspective view of another key holder 1d of the present invention;

Figure 69 is a side view of the key device employing the key holder 1d of Figure 68.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Example 1

Referring to FIG. 6 - FIG. 34, a key switch device for improving the pull-out force of the present invention includes a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, a scissor foot support having an upper and lower mating portion, and a scissors. The foot support is respectively connected with the mating portions of the key cap and the support bottom plate through the upper and lower mating portions, and the scissor foot support constitutes a synchronous linkage support structure by the mutual force transmission, so as to ensure that the key cap is parallel to the support bottom plate for lifting movement, and the scissor foot support 16 With metal forming, the scissor foot support 16 is provided with an independent scissor anti-off part at the lower end, and an independent support plate anti-off part is arranged on the support bottom plate 15, and a support plate anti-off space is arranged below the support plate anti-off part, the support plate The anti-off space can accommodate the anti-off part of the scissors; when the scissor foot support 16 is installed, when the key cap moves up and down, the anti-off part of the scissors is located in the anti-separation space of the support plate, and the limiting surface of the anti-off part of the scissors and the anti-off part of the support plate Correspondingly, when the keycap is subjected to the upward pulling force, the anti-offing portion of the scissors cooperates with the limiting surface of the retaining portion of the supporting plate to prevent the scissor foot support 16 from coming out from the mating portion of the supporting bottom plate 15.

The supporting portion of the supporting bottom plate 15 is composed of a supporting plate supporting portion, an inverted engaging portion on the supporting plate 15b and at least one supporting portion of the supporting plate, and the limiting portion of the supporting plate is formed by punching and bending; It is composed of a support and a limit stop 15e, and the support plate is prevented from coming off. The space is composed of the support plate anti-separation space 15d, and the support plate limit portion is composed of a scissors lower support arc 16h or a support plate bending arc 15g and a combination thereof.

The limiting portion of the supporting plate is formed by the limiting arc surface of the supporting plate, and the lower plate upper surface 16j of the scissors cooperates with the inverted engaging portion of the supporting bottom plate 15, the scissors foot support 16 cooperates with the limiting plate arc surface of the supporting plate, the supporting plate support portion and the scissors The lower support portion supports and cooperates, and the inverted engagement portion of the support bottom plate 15 is constituted by the support lower buckle lower plate 15c on the support plate suspension plate 15b, and the lower scissors support portion is formed by the lower plate surface of the lower end of the scissors foot support 16 and the support plate support portion It is constituted by the upper plate surface of the support base plate 15 or by the upper surface of the switch circuit.

The retaining portion of the supporting plate is composed of an anti-detachment preventing block 15e, and the anti-separation space of the supporting plate is constituted by the supporting plate preventing space 15d.

The engaging portion of the supporting bottom plate 15 is composed of a supporting plate supporting portion, an inverted engaging portion on the supporting plate 15b and at least one supporting portion of the supporting plate, and the limiting portion of the supporting plate is formed by punching and bending; The lower end is provided with a scissor anti-off part formed by stamping and bending, and a support anti-detachment limit 15e is arranged on the support bottom plate 15, and a support plate anti-separation space 15d is arranged below the support anti-restriction limit 15e, and the support plate anti-off space 15d can accommodate the anti-off part of the scissors;

After the scissor foot support 16 is installed, the anti-offset part of the scissor corresponds to the position of the limit surface of the anti-removal limiter 15e. When the key cap is subjected to the upward pulling force, the anti-offset part of the scissor and the limit of the anti-offset limit 15e The seat surface limit fit prevents the scissor foot support 16 from coming out of the mating portion of the support base 15.

[0066] The limiting portion of the supporting plate is formed by the limiting arc surface of the supporting plate, and the upper plate upper surface 16j of the scissors cooperates with the inverted engaging portion of the supporting bottom plate 15, and the scissor foot support 16 cooperates with the limiting arc surface of the supporting plate, and the supporting plate supports The support portion is supported by the lower support portion of the scissors, and the inverted engagement portion of the support bottom plate 15 is formed by the support lower buckle lower plate 15c on the support plate suspension plate 15b, and the lower scissors support portion is formed by the lower plate surface of the lower end of the scissors foot support 16 The plate support portion is constituted by the upper plate surface of the support base plate 15 or by the upper surface of the switch circuit.

Referring to FIG. 6, the retaining portion of the supporting plate is composed of a retaining and retaining limiter 15e, and the supporting and retaining limiting member 15e is formed by a bent side formed by the upper punching and bending of the supporting bottom plate 15, and the supporting and retaining limiting block 15e is located along the Z direction. Between the mating portions of the two supporting bottom plates 15; near the cantilever end of the supporting cantilever plate 15b under the support preventing and releasing limit 15e, a supporting space 15k is provided, and the supporting space is provided. 15k is connected to the support plate preventing space 15d; the support preventing and releasing limit 15e of the embodiment is connected with the inner end surface of the through hole in the x direction, and the outer side of the through hole limiting 15e and the through hole in the x direction may also be adopted. End connection.

Referring to Fig. 7, the scissor retaining portion is formed by a cantilevered bent side formed by punching and bending at the lower end of the scissor foot support 16. In this embodiment, the scissor anti-offing plate is formed by the scissor-proof portion of the lower end of the scissor support 16 by press bending. 16m is formed; at the lower end of the scissor foot support 16, a scissor anti-skip plate 16m is formed by punching and bending, and a scissor recessed space 16z is arranged on the scissor anti-off plate 16m.

Referring to FIG. 12, the outer side of the scissor arm of the two scissor foot supports 16 is respectively formed with a large shear arm flange 16n and a small shear arm flange 16p. After the scissor foot support 16 is installed, one of the scissor foot supports 16 has a large shear arm. The folded edge 16n is closely matched with the small shear arm flange 16p of the other scissor foot support 16, and the large shear arm flange 16n and the small shear arm flange 16p both strengthen the scissors feet. The rigidity of the support 16 and the small clearance fit limit the left and right sway of the keycap when moving up and down.

Referring to Figures 13-16, the retaining portion of the support plate is composed of a retaining and retaining limiter 15e, and the retaining and retaining stop 15e is located on the support plate 15b, and the support and retaining limit 15e is supported by the support plate 15b. The anti-detachment stop 15e formed by the boss extending in the direction is formed; the scissor anti-offset portion is formed by the cut end flange 16i formed by the press bending of the lower end of the scissor foot support 16.

Referring to Figures 17-19, between the mating portions of the two support base plates 15, that is, between the two support plate suspension plates 15b, a support inverted inverted arm 15L is formed, and the support inverted inverted arm 15L extends from the outside to the inside in the x direction. The anti-off-stop 15e is located at the cantilever end of the support-reverse cantilever 15L, and the anti-off-stop 15e is formed by the cantilever tail of the bucking arm 15L of the bend limit, and a support plate is disposed under the brace 15e. Space 15d, the lower end of the scissor foot support 16 has an extended slit limiting plate 16w, and the scissors limit through hole 16v is inserted through the plate surface on the scissors limit extending plate 16w. After the scissor foot support 16 is installed, the scissors limit is penetrated. The hole 16v corresponds to the position of the anti-removal limiter 15e. When the keycap is subjected to the upward pulling force, the punching section of the scissors limiting through-hole 16v cooperates with the limit surface limit of the anti-detachment limiter 15e to prevent The scissor foot support 16 is disengaged from the mating portion of the support base 15.

Referring to FIG. 20 to FIG. 22, the key switch device is provided with an anti-detachment limiter 15e, and a support plate inverted cantilever 15dd is stamped and formed on the support bottom plate 15, and the support plate inverted cantilever 15dd is extended from the outside to the inside in the z direction. The limiter 15e is located at the cantilever end of the support plate upside down arm 15dd, and the support release limiter 15e is formed by the cantilever tail of the bent support plate inverted cantilever 15dd, and a support plate clearance space 15d is disposed below the support release limiter 15e.

Referring to FIG. 21 to FIG. 23, in order to enhance the rigidity of the scissor foot support 16, two independent scissor retaining plates 16m can be connected and connected together to form a whole body, and the support plate anti-off space provided under the anti-off- stop 15e 15d is also connected, the support plate anti-off space 15d can accommodate the scissors anti-offset plate 16m;

The anti-skip plate 16m of the scissors is connected and connected together to form a whole; the anti-off-stopper 15e is connected and connected, and the anti-separation space 15d of the support plate disposed under the anti-off-stopper 15e is connected, and the anti-separation space 15d of the support plate can be accommodated. Scissors anti-offset plate 16m.

Referring to Figures 24-27, the upper end of the scissor foot support 16 is provided with an upper support bent edge 16r, and the support bent side 16r is bent downward and is about 30 degrees from the large plane of the scissor foot support 16----90 The angle of the support, the support bending arc 16s is formed when the bending support side 16r is bent; the support bending arc 16s of the scissors foot support 16 is supported by the lower surface of the keycap 1.

Referring to Figures 30-34, the keycap 1 is in the upper limit position under the support of the scissor foot support 16, and the upper limit angles of the scissor foot support 16 with respect to the support base plate 15 are respectively an angle and b angle; when mounted, the scissor foot support 16 respectively, or simultaneously rotate from a position greater than a angle and greater than b angle into the mating portion of the support bottom plate 15, while the support release limit 15e enters the support space 15k under the support release limit 15e, and then rotates into The anti-separation space 15d of the support plate below the support limit 15e is closed. After the rotation is completed, the anti-offset portion of the scissors corresponds to the position of the limit surface of the anti-offset limiter 15e, and the key switch device is installed. After being formed, the upper limit angles of the scissor foot support 16 with respect to the support base plate 15 are respectively within an angle of a and b. When the keycap 1 is subjected to the upward pulling force, the anti-detachment limiter 15e prevents the scissor foot support 16 from supporting. The mating portion of the bottom plate 15 is disengaged.

Referring to Figures 13-34, the scissor retaining portion is formed by the scissors retaining plate 16m or the cut end flange 16i, and it should be ensured that the scissor foot support 16 rotates unobstructedly into the support from a position greater than a angle and greater than b angle, respectively. At the same time as the mating portion of the bottom plate 15, the scissor retaining portion is unimpeded to rotate into the strut preventing space 15d below the supporting anti-restriction 15e, and after the rotation is completed, the scissor anti-off portion and the anti-detachment limit 15e are restricted. The position of the face corresponds to, when the key is subjected to the upward pulling force, the anti-detachment limiter 15e blocks the scissor retaining portion, thereby restricting the scissor foot support 16 from coming out.

The engaging portion of the supporting bottom plate 15 is composed of a supporting plate supporting portion, an inverted engaging portion on the supporting plate 15b and at least one supporting portion of the supporting plate, and the limiting portion of the supporting plate is formed by punching and bending; The lower end is provided with a scissor anti-off part formed by stamping and bending, and a support anti-detachment limit 15e is arranged on the support bottom plate 15, and a support plate anti-separation space 15d is arranged below the support anti-restriction limit 15e, and the support plate anti-off space 15d can accommodate the anti-off part of the scissors; after the installation of the scissor foot support 16 is completed, the anti-off part of the scissors corresponds to the position of the limiting surface of the anti-removal limiter 15e, and when the key cap is subjected to the upward pulling force, the anti-off part of the scissors The limiting surface of the retaining and retaining limiter 15e is engaged to prevent the scissor foot support 16 from coming out of the mating portion of the support base 15.

Example 2

Referring to FIG. 6 to FIG. 39, a key switch device for improving the pull-out force of the present invention comprises a key cap, a reset body, a switch circuit, a support bottom plate having a matching portion, a scissor foot support having an upper and lower matching portion, and a scissors foot. The support is connected to the mating portions of the key cap and the support bottom plate respectively through the upper and lower mating portions, and the scissor foot support constitutes a synchronous linkage support structure by the mutual force transmission, so as to ensure that the key cap is parallel to the support bottom plate for lifting movement, and the support bottom plate 15 is matched. The portion is composed of a support plate supporting portion, an inverted engaging portion on the supporting plate 15b and at least one supporting portion of the supporting plate. The limiting portion of the supporting plate is formed by pressing, and the limiting portion of the supporting plate is provided with a supporting plate limit. The curved surface; the lower plate upper surface 16j of the scissors cooperates with the inverted engaging portion of the supporting bottom plate 15, the lower limit portion of the scissors foot support 16 and the limiting plate arc surface of the supporting plate limiting portion cooperate, the supporting plate supporting portion and Supporting the support under the scissors;

The center of the limiting plate arc is located in the vicinity of the inverted engaging portion of the adjacent supporting bottom plate 15.

The support base plate 15 is provided with a support plate limiting portion, and the support plate limiting portion is composed of a support side limit portion or a branch opening limit portion and a combination thereof.

Referring to Fig. 6, the support side limit portion and the branch opening limit portion are respectively provided with a support plate limit arc surface, the branch opening limit portion is formed by the branch opening flange 15i, and the support plate limit arc surface is supported by the branch opening flange 15i The upper branch opening II is formed by the arc limit 15h; the side limiting portion is constituted by an upwardly bent side bend side 15f which is located on the side outer side of the support plate cantilever plate 15b in the z direction, and the support plate has a curved side by the support side The support plate bending arc 15g on the bending edge 15f is formed; the branch opening limiting portion is located inside the support plate cantilever plate 15b in the x direction at the opening of the matching space between the support plate 15b and the support bottom plate 15, The support side limit portion is located on the support bottom plate 15 The support cantilever plate 15b is located along the outer side of the z-direction; the support side limit portion of the embodiment is formed by bending the edge in the x direction, and the support side limit portion can also be formed by bending in other directions, and the support side limit portion is also The protrusion opening portion of the embodiment can be formed by bending the boss in the direction of the z-direction, and the limiting portion of the opening can be formed by bending in the other direction, but the embodiment is The graphical scheme is the best.

Referring to Fig. 6 - Fig. 12, the scissor foot support 16 is provided with a scissor lower support arch 16h, the scissor lower support arc 16h is formed by the bending shear side bend side 16i, the scissor foot support 16 on the scissor lower support arc 16h and the support plate The bending arc 15g is the same as the center of the circle or the arc (the arc is the most ambiguous), and the lower support of the scissors 16h constitutes the lower support of the scissors; the scissor foot support 16 is provided with the scissor support arc 16h, under the scissors support The arc 16h is formed by the bending shear side edge 16i, and the scissors lower support rock 16h on the scissor foot support 16 and the circular arc of the support plate bending arc 15g are equal or nearly identical, and the scissors support the arc 16h under the scissors. Support section.

The limit arc surface of the support plate is composed of the limit opening 15h of the branch opening II, and the lower limit portion of the scissors on the scissor foot support 16 is composed of the shear II limit surface 16y, wherein the branch opening II is limited to the arc 15h and the cut II limit surface is limited to 16y. The position fit can be regarded as the same opening or the same center of the opening limit II 15h and the cutting II limiting surface 16y;

Referring to Fig. 7, the distance L between the support limiting portion and the cantilever end of the support cantilever plate 15b is ≥ the thickness B of the scissor support 16.

Referring to Figure 6 - Figure 12, the limit arc surface of the support plate is composed of the limit opening 15h of the branch opening II, and the center of the limit opening 15h of the branch opening II is located near the contact point of the lower support portion of the scissors and the support portion of the support plate or the center of the circle is adjacent Between the inverted engaging portion of the supporting bottom plate 15 and the supporting bottom plate 15; the branch opening II limiting arc 15h is located on the supporting opening folded edge 15i, and the large plane of the supporting opening folded edge 15i cooperates with the scissors foot support 16 with a small gap to limit the scissors feet The support 16 moves in the Z direction; the center of the support bending arc 15g is located near the inverted engagement portion of the support plate 15b.

The supporting portion of the supporting bottom plate 15 is composed of a supporting plate supporting portion, an inverted engaging portion on the supporting plate 15b and at least one supporting portion of the supporting plate, and the limiting portion of the supporting plate is formed by press bending; the limiting portion of the supporting plate The support plate is formed by a limit arc surface, and the support plate arc surface is formed by a support plate bending arc 15g formed when the bent side 15f is bent, and the side bend side 15f is bent upward and is located at the support plate 15b. next to.

[0114] A branch opening I limit arc 15j and a branch opening II arc limit 15h are arranged on one of the support plate limiting portions, and the branch opening I limit arc 15j and the cut I limit surface 16yy limit fit are realized, and the branch opening II arc limit is achieved. 15h cooperates with the 16y limit of the shear II limit surface, and ensures that the center of the branch opening I limit arc 15j is located in the vicinity of the contact point between the lower support portion of the scissors and the support portion of the support plate, and the solution supports the pair of scissor feet supported by each other. When the angle a decreases, the amount of displacement of the scissor foot support 16 in the horizontal direction is limited, thereby ensuring that the key cap moves up and down more parallelly, and the branch opening I is limited to the arc 15j and the branch opening II is limited to the arc 15h, so that the surface matching scheme is more perfect. .

[0115] Referring to Figures 10-11, when the scissor foot support 16 is installed, the scissor foot support 16 on the left side moves up and down into The support plate cooperates with the space between the support plate cantilever plate 15b and the support opening flange 15i on the X-bend side 79, and the right side of the scissors foot support 16 moves upright and enters the support plate of the support plate and the X-bend side 79. The space between the cantilever plate 15b and the branch opening limit plate 15ii is in contact with the support bottom plate 15 to the lower end of the scissor foot support 16.

[0116] Referring to FIG. 12, the scissor foot support 16 on the left side is rotated inward, and the branch opening II of the branch opening 15i is limited to 15h, and the lower side of the scissor foot support 16 is gradually stepped by the shear II limiting surface 16y. The space between the support plate suspension plate 15b and the upper surface of the support base plate 15 is received.

[0117] Referring to FIG. 31-FIG. 13, the scissor foot support 16 on the right side is rotated inward, and the outer surface of the opening and closing plate 15ii is supported by the end face of the through hole at the scissor foot support 16 to gradually support the right side of the scissor foot. The lower fitting portion of the 16 is inserted into the space between the support plate cantilever plate 15b and the upper surface of the support base plate 15. The scissor foot support 16 forms a mutual support structure to complete the installation.

[0118] A support plate limiting portion is provided at the opening of the mating space between the support plate 15b and the support bottom plate 15, so that the key cap is more convenient to install, especially when the key cap is manually mounted on the scissor foot support 16. During the installation process, the scissor foot support 16 is removed from the opening of the mating space between the support plate 15b and the support base plate 15 to affect the installation of the key cap, which makes the key cap installation more convenient and quick.

[0119] A support plate limiting portion is provided at an opening of the mating space between the support cantilever plate 15b and the support bottom plate 15, so that the rotary mounting of the scissor foot support 16 is more convenient, and the scissor foot support 16 is rotated and mounted, and the scissor foot support 16 Rotating, the support plate limiting portion gradually pushes the scissor foot support 16 into the mating space between the support cantilever plate 15b and the support bottom plate 15, so that the flat upper scissors upper plate surface 16j and the inverted buckle fitting portion form a fit. It is convenient for manual installation and improves the reliability of the automatic installation of the scissor foot support 16.

Referring to FIG. 20 to FIG. 30, between the two supporting bases 15 and between the two supporting cantilever plates 15b, a supporting plate inverted cantilever 15dd is formed, and the supporting inverted cantilever 15dd extends from the outside to the inside. The limiter 15e is located at the cantilever end of the inverted cantilever 15dd of the support plate, and the anti-offset limiter 15e is formed by the cantilever tail of the inverted cantilever 15dd of the bending support plate, and the support plate preventing space 15d is disposed under the support and anti-offset 15e, the scissors The lower end of the foot support 16 has an extended slit limiting plate 16w, and the scissors limit through hole 16v is inserted through the plate surface on the scissors limit extending plate 16w. After the scissor foot support 16 is installed, the scissors limit through hole 16v and the support The position of the anti-off-stop 15e corresponds to the position of the anti-offset 15e. When the keycap is subjected to the upward pulling force, the punching section of the scissors limiting through-hole 16v cooperates with the limiting surface limit of the anti-removal limiter 15e to prevent the scissor-foot support 16 It is released from the fitting portion of the support base plate 15.

Referring to Fig. 35, the support portion of the support plate is composed of a branch opening flange 15i and a branch opening limit plate 15ii. The branch opening flange 15i can be bent in the Z direction or can be bent in the X direction, and the branch opening limit plate 15ii can be Bending in the Z direction can also be bent in the X direction; in this embodiment, the two branch opening flanges 15i are bent to the left and right at 90 degrees in the Z direction, and the two branch opening and closing plates 15ii are along The X-direction is bent, and the support plate is bent inward in the X direction with the X-bend side 79.

Referring to Figures 35-39, the limiting portion of the supporting plate is composed of a limiting portion for the opening, the limiting portion for the opening is formed by the supporting opening 15i, and the supporting opening 15i is provided with a limiting plate for the supporting plate, and the supporting plate is limited. The arc surface is composed of a branch opening I arc 15j and a branch opening II arc 15h on the branch opening 15i, and the scissors lower limit portion on the scissor foot support 16 is cut by the I limit surface 16yy and the cut II limit surface 16y. The composition, wherein the branch opening I limit arc 15j and the cut I limit surface 16yy limit fit, the branch opening II arc limit 15h and the shear II limit surface 16y limit fit, the center of the branch opening I limit arc 15j is located under the scissors support The vicinity of the contact point between the portion and the support portion of the support plate.

The center of the branch opening I limiting arc 15j or the branch opening II limiting arc 15h is located between the inverted engaging portion of the adjacent supporting bottom plate 15 and the supporting bottom plate 15; the supporting plate supporting portion is supported by the upper plate surface of the supporting bottom plate 15, or by a switch The upper surface of the circuit or the support portion of the support plate may be formed by the upper surface of the boss that is press-formed on the upper plate surface of the support base plate 15. The support plate support portion of the present embodiment uses the upper plate surface of the support base plate 15.

The lower fitting portion of the scissor foot support 16 is composed of a flat upper scissors upper plate surface 16j, a scissors lower limit portion, and a lower scissors support portion, wherein the lower plate upper surface 16j and the support bottom plate 15 of the flat plate shape are cut. The buckle matching portion cooperates, the lower limit portion of the scissors foot support 16 and the support plate limit arc surface on the support plate limit portion cooperate, and the support plate support portion and the lower scissors support portion support and cooperate; this embodiment: the support plate support portion It is composed of the upper plate surface of the support bottom plate 15, the lower support portion of the scissors is formed by the lower support arch 16h of the scissors, and the inverted engagement portion is formed by the lower buckle lower plate 15c, and the limit portion of the support plate is formed by the limit curved surface of the support plate.

[0113] There is a scissors limit through hole on the left side or the right side of the lower end of the scissor foot support 16 , and the cut I limit surface 16yy and the cut II limit surface 16y can be located on the upper and lower end faces of the limit through hole of the scissors limit through hole. It can also be located on the extension surface of the upper and lower end faces of the limit through hole of the scissors limit through hole. The upper and lower end faces of the limiting through hole are formed by the upper end surface of the limiting through hole and the lower end surface of the limiting through hole. The shearing limit surface 16yy and the shearing II limiting surface 16y are respectively located at the upper end surface of the limiting through hole and the lower end surface of the limiting through hole. .

Referring to FIG. 35 - FIG. 39, the mating portion of the supporting bottom plate 15 is composed of a supporting lower pressing plate 15c, a supporting opening flange 15i, and an upper plate surface of the supporting bottom plate 15 on the supporting cantilever plate 15b; wherein the supporting plate cantilever plate 15b is formed from the support plate Z bending edge 15a in the x direction and inwardly extending; the branch opening flange 15i is provided with a branch opening I arc 15j, the branch opening II arc 15h; the branch opening I limit arc 15j and shear I limit surface 16yy limit fit, branch opening II arc limit 15h and shear II limit surface 16y limit fit.

[0121] The center of the opening I limit arc 15j is located in the vicinity of the contact point of the lower support portion of the scissors and the support portion of the support plate, the support portion of the support plate is the upper plate surface of the support bottom plate 15, and the lower support portion of the scissors is the support arc under the scissors 16h. Or cut the end of the extension plate 16hh, the coordinates of the contact point between the lower support portion of the scissors and the support portion of the support plate are X: 0mm, Y: 0mm, and the center of the limit opening 15h of the opening II is located under the support of the scissors and the support of the support plate. The contact point of the part is in the range of X: ±0.7 mm and Y: ±0.9 mm of the base point, but the center of the opening 15 h of the branch opening II is located at the point X of the contact point of the lower support portion of the scissors and the support portion of the support plate: ±0.35mm, Y: It is preferably within the range of ±0.6 mm.

Referring to FIG. 37, the shearing limit surface 16yy is a plate flange on the scissor foot support 16. In this embodiment, a 90 degree plate flange is used, and the cut II limit surface 16y is an end face of the punching through hole on the scissor foot support 16. .

Referring to Fig. 38, the cut I limit surface 16yy and the cut II limit surface 16y are the plate flanges on the scissor foot support 16, and the embodiment adopts a 90 degree plate flange.

Referring to FIG. 39, the shearing limit surface 16y is a plate flange on the scissor foot support 16. In this embodiment, a 90 degree plate flange is used, and the cut I limit surface 16yy is an end face of the punching through hole on the scissor foot support 16. The lower support portion of the scissors is cut off the end portion of the extension plate 16hh.

Referring to Fig. 40, the lower support portion of the scissors is the lower support arch 16h of the scissors, the upper plate 16j of the scissors is the bending arc, and the upper plate 16j of the lower end of the scissors is a part of the scissor support 16 on the scissor foot support, and the lower end of the scissors is on the upper surface. The bending arc of 16j is formed by stamping, and the bending arc of the upper surface 16j of the scissors and the circular arc of the supporting arc 16h of the scissors are equal, and the center of the opening of the opening arc of 15h is located at the inverted supporting of the adjacent supporting bottom plate 15. Between the portion and the support bottom plate 15;

The rest is the same as in the first embodiment.

Example 3

Referring to FIG. 42 - FIG. 69, a key cap 1 having a character printed on its upper surface, a reset body (consisting of a rubber bead 11), a switch circuit (consisting of the membrane switch circuit 12), a support plate 15 having a fitting portion, The scissor foot support 16 has an upper and lower mating portion, and the scissor foot support 16 is rotated or slidably coupled to the mating portions of the key cap 1 and the support plate 15 respectively through the upper and lower fitting portions, and the scissor foot support 16 is synchronized by the force transmission between the interlocking portions The support structure is interlocked to ensure that the key cap 1 is moved up and down parallel to the support plate. The key cap 1 is composed of an I key assembly 1e and an II key assembly 1d. The I key assembly 1e is fixedly connected with the II key assembly 1d, and the I key assembly 1e is located at II. Above the key assembly 1d; the II key assembly 1d is formed by sheet metal stamping, the mating portion of the key cap 1 is located on the II key assembly 1d, and the characters are located on the I key assembly 1e.

The I key assembly 1e is only a decorative member (without a fitting portion), and can be made of various materials, and its outer shape can be a sheet shape or a shape of a conventional key cap (with a concave bottom surface); characters printed on the key cap 1 It may be located on the upper surface of the I-key assembly 1e or on the lower surface of the I-key assembly 1e (when a transparent material is used); the I-key assembly 1e may be a plastic product, which is produced by injection molding (the shape adopts the shape of a conventional keycap). The I-key assembly 1e can also be used with a sheet of glass material or a sheet of stainless steel or a sheet of PMMA sheet or a plastic film (a PET film, a PC film or the like which is treated with a surface hardening treatment). The II key assembly 1d is formed by sheet metal stamping (preferably using a stainless steel sheet), and the II key assembly 1d and the II key assembly 1d can be produced by using a steel belt of 0.1 mm to 0.15 mm, and the II key assembly 1d and the II key assembly 1d are The mating part is formed by sheet metal stamping, and can be produced by ultra-efficient organization using 'multi-station progressive die' (referred to as stepping die or 'grading die' or 'high speed die'). The I key component 1e is fixedly connected to the II key component 1d The bonding process may be employed. When the I-key component 1e is metal: the bonding process or the laser welding process, the I-key component 1e may be flanged to securely connect the I-key component 1e to the II key component 1d. .

The keycap 1 is designed as a combination structure of the I key assembly 1e and the II key assembly 1d, and the advantages thereof are as follows:

1. Using the stepping die to produce the I key component 1e, II key component 1d, the production efficiency is improved by 92 times - 184 times:

1 Production efficiency of existing injection keycaps:

At the time of design, 32--64 traditional injection-molded keycaps are arranged in the upper mold. According to the calculation of 4 inclined top mechanisms of each keycap, a total of 128--256 inclined top mechanisms are required, resulting in complicated mold structure and mold size. Very big;

When the existing key cap is injection-molded, every time the injection mold produces a mold key cap, it needs to be closed, injection, mold-proof, mold-opening, ejection, etc., and the whole process takes about 15 seconds - 20 seconds. That is, a 3--4 mold cap can be produced every minute;

Production of 32--64 injection keycaps per mold, production of 3-4 molds per minute to produce existing keycap calculations, production efficiency of existing keycaps: 128-256 keys per minute cap.

When the 2I key assembly 1e is in the form of a sheet, the shape can be formed by a stepping mold, and the II key assembly 1d can be produced by using a stainless steel material or a stepping mold structure.

Stepping die (also known as progressive die) is the best choice for mass production. It is called modern high precision, high efficiency, long life three high mold; step die production efficiency is high, mold cost is low, molding precision High, mold maintenance is simple, mold life can be up to more than 100 million times. At the same time, the use of stepping mode tissue production also has the advantages of high yield of combined keycaps, high quality detection efficiency of combined keycaps, low cost of stamping equipment purchase, and low energy consumption of stamping equipment.

[0039] The domestic stepping die stamping speed is divided into four levels: a low speed --- the number of consecutive stamping times of the mold 150-200 times / min; b medium speed --- the number of continuous stamping of the mold 200-400 times / min; c high speed - --Continuous stamping times of molds are 400-1200 times/min; d ultra-high speed---continuous stamping times of molds are more than 1200 times/min; all the above stepping modes are excerpted from the book [Multi-position progressive die].

[0040] When designing the stepping die (for example, the II key assembly 1d having the fitting portion), since the structure of the II key assembly 1d is simple and the size is small (15*15), the II key assembly 1d can be 6 rows-- 12 rows and columns, the arrangement width of the II key assembly 1d on the mold is 114 mm - 228 mm (the spacing between the II key assemblies 1d is 4 mm);

The stepping distance of the stepping die is 10x19mm=190mm (the width of 10 columns of keycaps). It takes 4 steps to produce the II key component 1d, and the arrangement length of the II key component 1d on the die is 760mm (between the II key components 1d) The spacing is 4mm);

The metal strip continuously enters the stepping die, and the stepping die can produce 60 - 120 II key components 1d per punching;

According to the domestic stepping die low speed stamping: --- continuous die stamping speed of 200 times / min;

The combination key caps are arranged in 12 rows, and the stepping die can produce 12000 combination key caps/min;

The combination key caps are arranged in 18 rows, and the stepping die can produce 24000 combination key caps/min;

Existing injection molds for keycaps - can produce 128 existing keycaps / min - 256 existing key caps / min;

When the combination key caps are arranged in 12 rows, the production efficiency of the combined keycap is 46 times-92 times of the existing injection keycap;

When the combination key caps are arranged in 18 rows, the production efficiency of the combined keycap is 92 times-184 times of the existing injection keycap;

The I key assembly 1e is in the form of a sheet, and has a simple structure. When the stepping mold is used, only two stations are required, and the production efficiency is twice that of the II key assembly 1d.

Although the key cap increases the bonding process or the laser welding process of the I key component 1e and the II key component 1d, the production efficiency of the combined keycap is still much higher than that of the existing injection keycap.

The bonding process of the I key component 1e and the II key component 1d can be automatically applied by a usual automatic dispensing machine, and the I key component 1e and the II key component 1d are automatically pressed together, and the glue is passed through the ultraviolet lamp. Cured in 1 second.

2. The combination of the keycap and the existing keycap is doubled in height:

The I key assembly 1e can be made of a sheet material of 0.1 mm to 0.2 mm, and the II key assembly 1d can be stamped and formed by a 0.12 mm thick stainless steel sheet. The thickness of the I key assembly 1e and the II key assembly 1d is only 0.22 mm. -0.32mm, see Figure 10, the thickness of the existing keycap is 0.55mm-0.6mm, and the wall thickness of the combined keycap is the thinnest; the height of the existing keycap is 1.55mm, see Figure 24 for the minimum of the combination keycap. The height is 0.59mm, and the combination of the keycap and the existing keycap is more than doubled; the lowering of the keyboard height has become the development direction of the notebook computer. For example, Apple and Taiwan enterprises cooperate with the new technology to make the light guide plate. The thickness of the 0.4mm thick light guide plate of the notebook keyboard is reduced to 0.25mm; the thinner parts of various notebook computer keyboards are the direction pursued by various manufacturers;

3. I key assembly 1e can use a variety of materials (including transparent film) ----- expressiveness:

For example, the I-key assembly 1e may be a stainless steel sheet having a brushed surface, and may be a chemically colored aluminum alloy sheet (a color which can exhibit various metallic lusters); when the I-key assembly 1e is a transparent sheet material, on the lower surface of the I-key assembly 1e Printing characters and background color, I key component 1e's background color can be easily printed to express the background color of various colors (the background color is designed to be a gradient color, the character and the bottom color are printed on the reverse side - repeated When the key is pressed, the character and the background color are never worn.) It is also possible to plate a metal film on the lower surface of the I-key assembly 1e (preferably using vacuum sputtering, such as a plastic film attached to the glass on a car) or in I. The lower surface of the key assembly 1e is bonded with a metal film of 0.02 mm, and a hollow character (silk-printed white or black at the character cutout) is processed on the metal film by chemical etching, so that the I-key assembly 1e exhibits a metallic texture, and the hollow character is rendered three-dimensional. The I key assembly 1e can also be a simple shell-shaped injection molded keycap, and the shell-shaped injection keycap simplifies the structure of the injection keycap;

4. The II key assembly 1d is formed by sheet metal stamping, and the II key assembly 1d is made of stainless steel material, completely eliminating the defect that the mating portion of the keycap produced by injection molding is easy to break and the molding defect exists;

5. The combination key cap is stamped and formed by metal sheet or plastic sheet, completely eliminating the injection molding defects of the injection molding production process;

Referring to FIG. 16 - FIG. 26, the engaging portion of the keycap 1 is composed of a keycap support fitting portion, an inverted engaging portion, and a keycap retaining portion, and an opening of the engaging portion of the keycap 1 is directed to a middle portion of the keycap 1.

Referring to Figures 42-48, the keycap 1 is provided with a separate keycap anti-offset portion, the keycap retaining portion is provided with a key letting space 1h; the scissor foot support is provided with a scissor upper limit portion; the keycap 1 is at an upper limit position When the keycap anti-off part is matched with the upper limit of the scissors, the upper limit of the scissors enters the key to make the space 1h; see Fig. 20 to ensure θ<90 degrees; the lower end of the scissor support 16 is provided with an independent scissors anti-off part An independent support plate anti-off part is arranged on the support bottom plate 15, and a support plate anti-off space is arranged below the support plate anti-off part, and the support plate anti-off space can accommodate the scissors anti-off part;

After the scissor foot support 16 is installed, when the key cap moves up and down, the anti-offset part of the scissor is located in the anti-separation space of the support plate, and the anti-off-off part of the scissor corresponds to the position of the limit surface of the anti-off part of the support plate, and when the key cap is subjected to the upward pull When the force is pulled out, the anti-offset portion of the scissors cooperates with the limit surface of the retaining portion of the support plate to prevent the scissor foot support 16 from coming out of the mating portion of the support base plate 15.

The retaining portion of the supporting plate is composed of the supporting and retaining stop 15e; the retaining space for the supporting plate is composed of the supporting preventing space 15d.

A key limiting portion 1g is disposed on an outer side of the keycap retaining portion, a key retaining space 1h is disposed on the keycap retaining portion, and a scissor limit position 16d is disposed on the scissor foot support; the keycap 1 is in an upper limit position The scissors limit position 16d is matched with the limit position of the key limit portion 1g, and the upper portion of the scissors limit position 16d enters the key release space 1h.

The keycap 1 is composed of an I key assembly 1e (not shown) and an II key assembly 1d, wherein the I key assembly 1e is fixedly connected to the II key assembly 1d, and the I key assembly 1e is located above the II key assembly 1d; the II key assembly 1d In the form of sheet metal stamping, the keycap retaining portion of the keycap 1 is located on the II key assembly 1d, and the keycap retaining portion is constituted by the cantilever key supporting sheet metal cantilever 1f.

The upper limit portion of the scissors is constituted by the upper end surface 16u of the cut hole or the lower plate surface supported by the scissor foot near the upper end surface 16u of the cut hole or the plate surface supporting the bent side 16r, and the upper portion of the scissor foot support is provided with a through plate surface The through hole 16q is cut, and the upper end surface 16u of the cut hole and the lower end surface 16x of the cut hole are respectively located at the punched section and the lower punched section of the upper portion of the cut through hole 16q.

The shearing through hole 16q supported by the scissor foot is located along the length of the scissor foot support and near the upper support bent side 16r, and the key cap 1 of the key switch device is provided with a key cap anti-off part, and the key cap anti-off part is made of a cantilever The key support sheet metal cantilever 1f is formed, and the upper portion of the scissor foot support is provided with a cut through hole 16q. After the key cap 1 is completed, the key limit portion 1g of the key support sheet metal cantilever 1f or the key support sheet metal cantilever 1f is located at the cut through hole. Within 16q.

The mating portion of the keycap 1 is composed of a keycap support engaging portion, an inverted engaging portion, and a keycap retaining portion, and the keycap retaining portion is located between the two inverted engaging portions.

Referring to Figure 31, the key support sheet metal cantilever 1f is composed of a tilting section, the key limiting portion 1g is located at the end of the tilting section of the cantilever, and there is a key letting space 1h above the tilting section;

The key support sheet metal cantilever 1f is composed of a tilting section and a straight section, and the tilting section and the straight section are smoothly connected and form an angle (the straight section of the embodiment is parallel to the large plane of the II key assembly 1d), and is inclined. There is a key to make the space 1h above the 钭 section and the straight section;

When the keycap 1 is in the upper limit position, the tilting section of the key supporting sheet metal cantilever 1f is matched with the upper end surface 16u of the shearing hole. When the keycap is subjected to the upward drawing force, the tilting section and the cutting hole of the key supporting sheet metal cantilever 1f The lower plate surface supported by the scissor foot near the upper end surface 16u is restrained to prevent the key cap from coming out of the fitting portion of the scissor foot support 16.

Referring to FIG. 32, when the key cap 1 is in the upper limit position, when the key cap is subjected to the force in the X direction, the lower end surface 16x of the shear hole contacts the tilting section of the key support sheet metal cantilever 1f, and the cooperation of the scissor foot support and the key cap is restricted. There was a stuck phenomenon in the department.

Referring to FIG. 33 to FIG. 35, the shearing through hole 16q supported by the scissor foot penetrates a part of the supporting bending arc 16s, or the shearing through hole 16q supported by the scissor foot penetrates the supporting bending arc 16s, so that the upper end surface 16u of the shearing hole becomes a supporting folding A part of the flange 16r, the key support portion 1f and the key limit portion 1g on the key support cantilever 1f are located in the cut through hole 16q, and the key limit portion 1g is engaged with the plate surface of the support bent side 16r.

[0041] Referring to Fig. 49, the I key assembly 1e is made of a 0.1 mm thick stainless steel, and an I key assembly 1e having a stretched skirt produced by a stretch stepping die.

Referring to FIG. 50 and II, the key assembly 1d is stamped and formed with an I-folded edge 1k and a II-bent edge 1m, wherein the I-bend edge 1k is connected with the upper plane of the II key assembly 1d and forms a certain angle, and the II bending edge is formed. 1m is connected with the I bent side 1k and formed at a certain angle; the inverted engaging portion is constituted by the key reverse matching portion 1a, and the key inverted engaging portion 1a is located at the upper surface of the inner side end of the II bent side 1m in the X direction; The I-bend side 1k and the II-bend side 1m which are press-formed on the component 1d are bent in the Y direction to form the Y-direction bent portion 1L, and the inwardly extending plate of the II bent side 1m along the X direction is folded in the z direction. The z-direction bent side 1j is formed at a certain angle, and the upper surface of the bent side of the z-direction bent side 1j and the II bent side 1m constitutes the key reverse-fitting portion 1a, and also the inner end of the II-folded side in the 1mX direction The corner portion (not shown in the drawing, the corner portion is preferably formed into a circular arc) constitutes the key reverse fitting portion 1a; the key reverse fitting portion 1a is located near the upper surface of the inner side end of the II bent side 1m in the X direction.

Referring to FIG. 51--FIG. 55, the engaging portion of the keycap 1 is located on the II key assembly 1d, and the lower side of the cantilever plate of the left and right sides of the left and right sides of the y-direction cantilevered engaging portion 1a and the key supporting sheet metal cantilever 1f The plate surface is configured to be engaged with the mating portion of the keycap 1 by the thickness of the upper portion of the scissor foot support 16; the I key assembly 1e is fixedly connected to the bent side 1m of the II.

The keycap retaining portion on the II key assembly 1d is constituted by a key supporting sheet metal cantilever 1f which is bent and bent at a certain angle in the Z direction, and the keycap retaining portion of the present embodiment is supported by the cantilever end of the key sheet metal cantilever 1f The key limiting portion 1g is configured such that the key supporting sheet metal cantilever 1f is connected to the key bending limit plate 4 at a certain angle, and the key limiting portion 1g is located at the cantilever end of the key supporting sheet metal cantilever 1f.

Referring to Fig. 51, the I key assembly 1e is only a decorative member (with no mating portion), which can adopt various materials, and the outer shape thereof can adopt a shape of a sheet or a conventional key cap (with a concave bottom surface); the key cap 1 The printed characters can be located on the upper table of the I-key component 1e. The surface can also be located on the lower surface of the I-key assembly 1e (when a transparent material is used); the I-key assembly 1e can be a plastic product, which is produced by injection molding (the shape adopts the shape of a conventional keycap), and the I-key assembly 1e can also be used. A sheet of glass material or a sheet of stainless steel or a sheet of PMMA sheet material or a plastic film (a PET film or a PC film treated with a surface hardening treatment is preferred).

Referring to Figure 56--FIG. 61, the mating portions of the keycap 1 are all disposed on the II key assembly 1d; the II key assembly 1d has an I-folded edge 1k bent 90 degrees in the y direction, and the I-bending edge 1k has an edge along the x- The direction extending single extended edge 1dd has a matching space between the single extended side 1dd and the lower surface of the II key assembly 1d.

The inverted snap fit portion is located on the upper surface near the cantilever end of the single extended edge 1dd.

The characters of the keycap 1 are printed on the reverse side of the transparent I key assembly 1e, and the reverse side of the I key assembly 1e and the II key assembly 1d are fixedly bonded by bonding; the I key assembly 1e is made of a glass material or a PMMA material.

The I key assembly 1e uses a glass material or a PMMA material, and a dark ink is printed on the reverse side of the I key assembly 1e and the characters are hollowed out, and the light ink is screen printed on the hollow character, and the reverse side of the I key assembly 1e and the II key assembly 1d The connection is fixed by bonding.

The I key assembly 1e and the II key assembly 1d are fixedly connected by bonding or welding.

Referring to Fig. 56--Fig. 57, the cantilever end of the II bent side 1m on the x-direction bent portion 1p points to the middle of the key, and the cantilever end of the IIb bent side 1m points to the outer side of the middle of the key through the punched corner The chamfered guide portion 1q is formed; the upper and lower sides of the upper end of the scissor foot support 16 are press-formed with the scissor-bending guide portion 16x; when the II-key member 1d is mounted, the inner surface of the scissor-bending guide portion 16x of the scissor-foot support 16 It is in contact with the chamfering guide portion 1q, and the inner surface of the shearing and bending guide portion 16x is introduced into engagement with the outer end surface of the II bent side 1m, and when the mounted II key assembly 1d is moved up and down, the bending guide portion is cut. The inner surface of the 16x restricts the left side of the II key assembly 1d from shaking.

Referring to FIG. 62--FIG. 65, the II key assembly 1d is matched with the existing plastic scissor foot support 16. The mating portion of the II key assembly 1d is composed of a first bent portion 1s, a second bent portion 1y, and a third portion. The bent portion 1v is configured, wherein the first bent portion 1s is located between the two second bent portions 1y, and the first bent portion 1s and the second bent portion 1y are all guided by the press-formed folding arc plate 1x. The panel 1t is configured, and the folding arc plate 1x of the first bent portion 1s and the folding arc plate 1x of the second bent portion 1y correspond to each other and the corresponding folding arc plate 1x and the plastic scissor foot support are viewed from the side view. The upper engaging portion of the first bent portion 1s is fitted with the arcuate plate 1x and the guide plate 1t of the second bent portion 1y corresponding to each other and having an inverted eight shape.

The third bending part 1v is composed of a flat guiding plate 1w formed by extending the cantilever end of the flat folding side, the vertical bending side and the flat bending side, and is composed of a flat folding side, a vertical bending side, and a flat side. The guide plate 1w constitutes a sliding engagement portion of the keycap.

Referring to Fig. 66 - Fig. 67, the key cap 1 is further provided with a III key assembly 1z, which is located between the I key assembly 1e and the II key assembly 1d, the I key assembly 1e, the III key assembly 1z, and the II key assembly 1d. Fixed connection.

The III key assembly 1z can be made of various materials and has a sheet shape. The III key assembly 1z can be made of a glass material sheet or a stainless steel sheet. Or use PMMA sheet material or plastic film.

The III key assembly 1z of the present embodiment is made of a transparent material, and a light incident portion is provided on the lower surface of the III key assembly 1z, and a light emitting portion 1cc is disposed on the III key assembly 1z, and the light emitting portion 1cc and the I key assembly 1e are provided. The character light path is turned on.

The I key assembly 1e is made of a sheet material, and the character on the I key unit 1e is hollowed out; the III key unit 1z is a sheet-shaped transparent light guide sheet, and a light incident portion is provided on the lower surface of the III key unit 1z, at the III key. The light emitting portion 1cc is provided in the module 1z, and the light emitting portion 1cc is composed of the character light emitting portion 1aa and the frame light emitting portion 1bb. The frame light emitting portion 1bb surrounds the edge of the III key assembly 1z, and the frame light emitting portion 1bb is located at the III key. The upper surface of the edge of the component 1z or the end surface of the edge.

The key cap 1 is further provided with a III key assembly 1z (not shown), the III key assembly 1z is a metal film, the metal film is provided with a hollow character of the key cap 1, the I key assembly 1e is a transparent material, and the III key assembly 1z is located at the I. Between the key assembly 1e and the II key assembly 1d, the I key assembly 1e, the III key assembly 1z, and the II key assembly 1d are fixedly connected.

Referring to Fig. 68 - Fig. 69, the mating portions of the keycap 1 are all disposed on the II key assembly 1d.

The II key assembly 1d has an I-folded side 1k bent 90 degrees in the y direction, and the I-bent side 1k has a single-extending side 1dd extending in the x direction, in the x-direction, under the single-extending side 1dd and the II-key assembly 1d There is a matching space between the surfaces.

The undercut engaging portion is located on the upper surface near the cantilever end of the single extended side 1dd---the key reverse fitting portion 1a.

The rest is the same as in the first embodiment.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the invention. within.

Claims

The key switch device for improving the key pull-out force comprises a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, and a scissor foot support having an upper and lower matching portion, and the scissor foot support is respectively supported by the upper and lower mating portions The key cap and the supporting portion of the supporting bottom plate are connected, and the scissor foot support constitutes a synchronous linkage supporting structure by the mutual force transmission, so as to ensure that the key cap is parallel to the supporting bottom plate for lifting movement, and the key cap 1 is provided with independent a keycap retaining portion, the keycap retaining portion is provided with a key retaining space 1h; the scissor foot support is provided with a scissor upper limit portion; and when the keycap 1 is at an upper limit position, the keycap retaining portion Cooperating with the upper limit position of the scissors, the upper limit portion of the scissors enters the key letting space 1h.
The key switch device for improving the key pull-out force comprises a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, and a scissor foot support having an upper and lower matching portion, and the scissor foot support is respectively supported by the upper and lower mating portions The key cap and the supporting portion of the supporting bottom plate are connected, and the scissor foot support constitutes a synchronous linkage supporting structure by the mutual force transmission to ensure the lifting and lowering movement of the key cap parallel to the supporting bottom plate, wherein the scissor foot support 16 is made of metal. Forming, the lower end of the scissor foot support 16 is provided with an independent scissor anti-off part, and an independent support plate anti-off part is arranged on the support bottom plate 15, and a support plate anti-off space is arranged below the support plate anti-off part, The anti-separation space of the support plate can accommodate the anti-off part of the scissors; after the installation of the scissor-foot support 16 is completed, when the key cap moves up and down, the anti-off part of the scissors is located in the anti-separation space of the support plate, and the anti-off part of the scissors and the anti-off part of the support plate The position of the limiting surface corresponds to, when the keycap is subjected to the upward pulling force, the anti-offing portion of the scissors cooperates with the limiting surface of the retaining portion of the supporting plate to prevent the matching of the scissor foot support 16 from the supporting bottom plate 15 Within prolapse.
The key switch device for improving the key pull-out force comprises a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, and a scissor foot support having an upper and lower matching portion, and the scissor foot support is respectively supported by the upper and lower mating portions The key cap and the supporting portion of the supporting bottom plate are connected, and the scissor foot support constitutes a synchronous linkage supporting structure by the mutual force transmission, so as to ensure that the key cap is parallel to the supporting bottom plate for lifting movement, and the feature is: the supporting portion of the supporting bottom plate 15 The support portion of the support plate, the reverse fit portion of the support plate 15b and the at least one support portion, the support portion of the support plate is formed by pressing, and the support portion of the support plate is provided with a support The plate upper limit arc surface; the lower plate upper surface 16j of the scissors cooperates with the inverted engaging portion of the support bottom plate 15, and the scissors lower limit portion of the scissors foot support 16 cooperates with the support plate limit arc surface on the support plate limit portion, the support plate The supporting portion is supported and supported by the lower supporting portion of the scissors; the center of the limiting curved surface of the supporting plate is located near the inverted engaging portion of the adjacent supporting bottom plate 15.
The key switch device for improving the key pull-out force comprises a key cap, a reset body, a switch circuit, a support bottom plate having a mating portion, and a scissor foot support having an upper and lower matching portion, and the scissor foot support is respectively supported by the upper and lower mating portions The key cap and the supporting portion of the supporting bottom plate are rotated or slidably connected, and the scissor foot support constitutes a synchronous linkage supporting structure by the mutual force transmission to ensure the lifting and lowering movement of the key cap parallel to the supporting bottom plate, wherein the key cap 1 The mating portion is composed of a key cap supporting portion, an inverted engaging portion, and a key limiting structure; the key cap 1 is composed of an I key assembly 1e and an II key assembly 1d, and the I key assembly 1e is fixedly connected with the II key assembly 1d. The I key assembly 1e is located above the II key assembly 1d; the II key assembly 1d is formed by sheet metal stamping.
A key switch device for improving a key pull-out force according to claim 1 or 2 or 3 or 4, wherein the key cap is provided with a key cap retaining portion, and the key cap retaining portion is provided with a key The limiting portion 1g is provided with a key letting space 1h on the inner side of the upper side of the key limiting portion 1g; the upper limit portion of the scissors is formed by the scissors limiting position 16d; when the keycap 1 is in the upper limit position, the scissors limit The position gear 16d is engaged with the key limit portion 1g, and the upper portion of the scissors limit gear 16d enters the key release space 1h or the entry key replenishment space 1h along the extension line of the scissors limit gear 16d.
A key switch device for improving a key pull-out force according to claim 1 or 2 or 3 or 4, wherein the key cap is provided with a key cap retaining portion, and the key cap retaining portion is provided with a key The limiting portion 1g is provided with a key letting space 1h on the inner side of the upper side of the key limiting portion 1g; the upper limit portion of the scissors is formed by the upper end surface 16u of the shear hole or supported by the scissor foot near the upper end surface 16u of the cut hole The plate surface is constituted by a plate surface supporting the bent side 16r; the upper portion of the scissor foot support is provided with a shearing through hole 16q penetrating the plate surface, and the upper end surface 16u of the shear hole is located at the upper portion of the cut through hole 16q Punching the section.
A key switch device for improving the pull-out force of a key according to claim 6, wherein the shearing-through hole 16q supported by the scissor foot is located along the length of the support of the scissor foot and adjacent to the upper support bent side 16r. In the vicinity, or the shearing through hole 16q supported by the scissor foot penetrates a part of the supporting bending arc 16s, or the shearing through hole 16q supported by the scissor foot penetrates the supporting bending arc 16s, so that the upper end surface 16u of the shearing hole becomes A portion of the bent side 16r is supported.
A key switch device for improving a key pull-out force according to claim 5 or 6, wherein the key cap 1 is composed of an I-key assembly 1e and an II key assembly 1d, wherein the I-key assembly 1e and the II key assembly 1d is fixedly connected, the I-key assembly 1e is located above the II-key assembly 1d; the II-key assembly 1d is formed by sheet metal stamping, and the keycap retaining portion of the keycap 1 is located on the II-key assembly 1d.
A key switch device for improving a key pull-out force according to claim 7 or 8, wherein the key cap retaining portion is supported by a cantilever key, a sheet metal cantilever 1f, a key limiting portion 1g, and a key letting space. 1h is constructed, and the key let space 1h is located above the key support sheet metal cantilever 1f.
The key switch device for improving the key pull-out force according to claim 1 or 9, wherein the key cap 1 of the key switch device is provided with a key cap retaining portion, and the key cap retaining portion is a cantilever key supporting sheet metal cantilever 1f is formed, and an upper portion of the scissor foot support is provided with a shearing through hole 16q, and after the key cap 1 is completed, the key supporting sheet metal cantilever 1f or a part of the key supporting sheet metal cantilever 1f And the key limiting portion 1g on the key supporting sheet metal cantilever 1f is located in the shearing through hole 16q.
The key switch device for improving the key pull-out force according to claim 1 or 2 or 3 or 4, wherein the support base plate 15 is provided with a support plate limiting portion, and the support plate limiting portion is The support side limit portion or the branch opening limit portion and a combination thereof.
A key switch device for improving a key pull-out force according to claim 11, wherein said branch opening limiting portion is located inside the cantilever end of the support cantilever plate 15b in the x direction, and the support side limit portion is located The support cantilever plate 15b of the support base plate 15 is located on the outer side of the side in the z direction.
A key switch device for improving a key pull-out force according to claim 12, wherein: the support side limit portion and the branch opening limit portion are respectively provided with a support plate limit arc surface, and the branch opening limit portion The support opening flange 15i is formed, and the support plate arc surface is formed by the branch opening II arc 15h on the branch opening flange 15i.
A key switch device for improving a key pull-out force according to claim 12, wherein the side limit restricting portion is bent by an upward bent side of the side of the side plate cantilever plate 15b in the z direction. 15f is constituted, and the limiting arc surface of the supporting plate is composed of a bending arc 15g of the supporting plate on the side bending side 15f.
A key switch device for improving a key pull-out force according to claim 12, wherein said key switch device is provided with a scissor foot support 16, and said scissor foot support 16 is provided with a scissor support arc 16h. The lower support rock 16h of the scissors is formed by the bending shear side edge 16i, the lower scissors support arch 16h on the scissor foot support 16 and the support plate bending arc 15g are the same center, and the scissors support the arc 16h to form the scissors. Lower support.
A key switch device for improving a key pull-out force according to claim 12, wherein said key switch device is provided with a scissor foot support 16, and said scissor foot support 16 is provided with a scissor support arc 16h. The lower support rock 16h is formed by the bending shear side bend 16i, and the scissor lower support arch 16h on the scissor foot support 16 and the arc of the support plate bending arc 15g are equal or nearly congruent, The lower support rock 16h of the scissors constitutes the lower support portion of the scissors.
A key switch device for improving a key pull-out force according to claim 3 or 12 or 13 or 14 or 15 or 16, wherein said key switch device is provided with a scissor foot support 16, said support plate being limited The arc surface is composed of a branch opening II limit arc 15h, and the lower limit portion of the scissors on the scissor foot support 16 is composed of a shear II limiting surface 16y, wherein the branch opening II arc limit 15h and the shear II limit surface 16y limit fit .
A key switch device for improving a key pull-out force according to claim 12, wherein the key switch device is provided with a scissor foot support 16, and the support plate limit portion is constituted by a support opening limit portion. The branch opening limiting portion is formed by the branch opening flange 15i, and the branch opening flange 15i is provided with a support plate limiting arc surface, and the support plate limiting arc surface is limited by the branch opening I on the branch opening flange 15i. The opening II is limited to the arc 15h, and the lower limit portion of the scissors on the scissor foot support 16 is composed of a clipping I limiting surface 16yy and a shearing II limiting surface 16y, wherein the opening I limits the arc 15j and the clipping I limit. The surface 16yy limit fits, the branch opening II limit arc 15h cooperates with the shear II limit surface 16y limit, and the center of the branch opening I limit arc 15j is located near the contact point of the lower scissors support portion and the support plate support portion.
A key switch device for improving a key pull-out force according to claim 3, wherein a distance L between the support plate limiting portion and the cantilever end of the support cantilever plate 15b is ≥ a plate thickness B of the scissor foot support 16.
A key switch device for improving the pull-out force of a key according to claim 3 or 16, wherein the support plate has a limit arc surface 15h defined by the branch opening II, and the branch opening II is limited to 15h. The center of the circle is in contact with the support of the support under the scissors The vicinity of the point or the center of the circle is located between the inverted engagement portion of the adjacent support floor 15 and the support floor 15.
A key switch device for improving the pull-out force of a key according to claim 18, wherein: the center of the support opening I of the arc 1j or the arc of the branch opening 15h is located at an inverted fit of the adjacent support bottom plate 15. Between the portion and the support base plate 15.
A key switch device for improving the pull-out force of a key according to claim 12, wherein said branch opening II arc 15h is located on the branch opening flange 15i, and the large plane of the branch opening flange 15i and the scissors The foot support 16 has a small clearance fit to limit the movement of the scissor foot support 16 in the Z direction.
A key switch device for improving a key pull-out force according to claim 12, wherein: a center of said support plate bending arc 15g is located adjacent to the inverted engaging portion of the support plate cantilever plate 15b. The reverse fitting portion of the bottom plate 15 is between the support bottom plate 15.
A key switch device for improving a key pull-out force according to claim 1 or 2 or 3 or 4, wherein the engaging portion of the support bottom plate 15 is supported by the support plate and located on the support plate 15b of the support plate. Forming an inverted buckle fitting portion and at least one support plate limiting portion, wherein the support plate limiting portion is formed by press bending; the support plate limiting portion is formed by a support plate limiting curved surface, and the support plate limiting arc The face is formed by a support bending arc 15g formed when the side bend 15f is formed, and the side bend side 15f is bent upward and is located beside the support plate 15b.
A key switch device for improving a key pull-out force according to claim 1 or 2 or 3 or 4, wherein the key switch device is provided with a support plate preventing portion, and the support plate preventing portion is supported by The anti-detachment limiter 15e is configured, and the support plate preventing space is composed of the support plate preventing space 15d.
A key switch device for improving a key pull-out force according to claim 25, wherein said key switch device is provided with a scissor foot support 16, and said scissor foot support 16 is provided with a scissor-proof portion, and the scissors are prevented from coming off. The portion is formed by a cantilevered bent side formed by punching and bending at the lower end of the scissor foot support 16 .
A key switch device for improving a key pull-out force according to claim 26, wherein the scissors retaining portion is constituted by a scissors retaining plate 16m formed by press-bending at a lower end of the scissor-leg support 16.
A key switch device for improving the pull-out force of a key according to claim 27, wherein: a scissor-preventing plate 16m is formed by punching and bending at a lower end of the scissor-leg support 16 There is a clipping and recessing space 16z on the 16m.
A key switch device for improving a key pull-out force according to claim 26, wherein the scissors retaining portion is constituted by a cut end flange 16i formed by press bending of the lower end of the scissor foot support 16.
A key switch device for improving the pull-out force of a key according to claim 2 or 29, wherein the retaining portion of the support plate is constituted by a retaining and retaining limit 15e, and the retaining and retaining stop 15e is located at a branch On the plate cantilever plate 15b, the branch retaining limiter 15e is constituted by an anti-detachment limiter 15e formed by a boss extending in the Z direction on the strut cantilever plate 15b.
A key switch device for improving the pull-out force of a key according to claim 2 or 29, wherein the retaining portion of the support plate is constituted by a retaining and retaining limiter 15e, and the support preventing and retaining limiter 15e is supported by The bottom plate 15 is formed by a bent side formed by press bending, and the branch retaining limit 15e is located between the mating portions of the two support bottom plates 15 in the Z direction.
A key switch device for improving a key pull-out force according to claim 30, wherein: in the vicinity of the cantilever end of the support cantilever plate 15b, which is located on the inner side in the x direction below the support release limiter 15e, A support space 15k is provided, and the support space 15k is in communication with the support preventing space 15d.
A key switch device for improving a key pull-out force according to claim 31, wherein: in the vicinity of the cantilever end of the support plate 15b below the x-direction and near the cantilever plate 15b of the support plate, A support space 15k is provided, and the support space 15k is in communication with the support preventing space 15d.
A key switch device for improving a key pull-out force according to claim 2 or 32 or 33, wherein the key cap 1 is in an upper limit position under the support of the scissor foot support 16, and the scissor foot support 16 is opposite to The upper limit angles of the support bottom plate 15 are respectively an angle a and a b angle; when installed, the scissor foot supports 16 are respectively rotated into the mating portions of the support base plate 15 from positions greater than a angle and larger than b angles, respectively. The anti-off part of the scissors enters the support space 15k under the anti-off-stop 15e, and then rotates into the anti-separation space 15d of the support plate under the anti-off-stop 15e. After the rotation is completed, the anti-off part and the support of the scissors The position of the limiting surface of the limiting gear 15e corresponds to the upper limit angle of the scissor foot support 16 with respect to the supporting bottom plate 15 respectively after the key switch device is installed, and the key cap 1 is subjected to the upward pulling. At the time of pulling force, the anti-detachment limiter 15e prevents the scissor-foot support 16 from coming out of the mating portion of the support base 15.
A key switch device for improving a key pull-out force according to claim 1 or 2 or 3 or 4, wherein the engaging portion of the support bottom plate 15 is supported by the support plate and located on the support plate 15b of the support plate. The reverse buckle fitting portion and the at least one support plate limiting portion are formed, wherein the support plate limiting portion is formed by press bending; and the scissors foot support portion 16 is provided with a scissor-preventing portion formed by press bending, at the support bottom plate 15 An anti-detachment limiter 15e is disposed on the support, and a support plate clearance space 15d is disposed under the support release limiter 15e. The support plate release space 15d can accommodate the scissors retaining portion; the scissor foot support 16 is installed. Afterwards, the anti-offset portion of the scissors corresponds to the position of the limiting surface of the anti-removal limiter 15e. When the keycap is subjected to the upward pulling force, the anti-offset portion of the scissor is matched with the limiting surface of the anti-removal limiter 15e. The scissor foot support 16 is prevented from coming out of the mating portion of the support base 15.
A key switch device for improving a key pull-out force according to claim 35, wherein: said support plate limiting portion is formed by a support plate limiting curved surface, and the upper end of the scissors upper plate surface 16j and the support bottom plate 15 are inverted. The buckle fitting portion cooperates, the scissor foot support 16 cooperates with the support plate limit arc surface, the support plate support portion and the scissors lower support portion support and cooperate, and the inverted engagement portion of the support bottom plate 15 is supported by the support plate cantilever plate 15b The buckle lower plate 15c is constituted by a lower plate surface of the lower end of the scissor foot support 16, and the support plate support portion is constituted by the upper plate surface of the support base plate 15 or by the upper surface of the switch circuit.
A key switch device for improving the pull-out force of a key according to claim 35, wherein said key switch device is provided with an anti-detachment limiter 15e, and a support plate is mounted on said support base plate 15 15dd, the support plate inverted cantilever 15dd extends from the outside to the inside, the support release limit stop 15e is located at the cantilever end of the support plate inverted cantilever 15dd, and the support release limit stop 15e is formed by the cantilever tail of the inverted support plate inverted cantilever 15dd, in the support A support plate clearance space 15d is provided below the release limiter 15e.
A key switch device for improving a key pull-out force according to claim 1 or 2 or 3 or 4, wherein the upper end of the scissor foot support 16 is provided with an upper support bent side 16r, and the support bent side 16r Bending downward and forming a certain angle with the large plane of the scissor foot support 16, the support bending arc 16s is formed when the bending support bending edge 16r is formed; the supporting bending arc 16s of the scissor foot support 16 and the keycap 1 The lower surface supports the fit.
A key switch device for improving the key pull-out force according to claim 38, wherein: the outer side of the scissor arm of the two scissor foot supports 16 is respectively formed with a large shear arm flange 16n and a small shear arm flange 16p. After the scissor foot support 16 is installed, the large shear arm flange 16n of one of the scissor foot supports 16 cooperates with the small shear arm flange 16p of the other scissor foot support 16 with a small clearance.
A key switch device for improving the pull-out force of a key according to claim 27 or 28, wherein the scissors retaining plate 16m is connected and connected together to form a whole body; and the anti-off-stopper 15e is connected and connected to each other. The support preventing space 15d disposed under the limiter 15e is connected, and the support preventing space 15d can accommodate the scissors retaining portion.
A key switch device for improving a key pull-out force according to claim 2, wherein the engaging portion of the support base plate 15 is supported by a support plate, an inverted engaging portion on the support plate 15b and at least A support plate limiting portion is formed, wherein the support plate limiting portion is formed by press bending; the support plate retaining portion is formed by the support preventing and releasing limit 15e, and the supporting plate retaining space is constituted by the supporting plate preventing and disclosing space 15d.
The key switch device for improving the key pull-out force according to claim 4, wherein the II key assembly 1d is stamped and formed with a 1-fold bent edge 1k and a II bent edge 1m, wherein the I-bend edge 1k is connected with the upper plane of the II key assembly 1d and formed at a certain angle, and the II bent side 1m is connected with the I bent side 1k and formed at a certain angle; the inverted engaging portion is located near the inner end of the II bent side 1m .
A key switch device for improving a key pull-out force according to claim 42, wherein the I-bend side 1k and the I-bend side 1m of the II key member 1d are bent in the Y direction to form Y. The direction bent portion 1L, or the I-bend side 1k and the II bent side 1m on the II key assembly 1d are all bent in the X direction to form the X-direction bent portion 1P; the cantilever end pointing key of the II bent side 1m On the inner side, the undercut fitting portion is located near the inner end of the II bent side 1m.
A key switch device for improving a key pull-out force according to claim 4, wherein said reverse-fitting portion is constituted by a key-backward engaging portion 1a, and said key-backward engaging portion 1a is located at a II bend The edge 1m is located near the upper surface of the inner end in the X direction or near the upper surface of the inner end of the II bent side 1m in the X direction, and the opening of the key fitting space of the keycap 1 points to The middle of the keycap 1 is described.
A key switch device for improving a key pull-out force according to claim 44, wherein an X-extending portion formed by the bent side 1J in the Z direction is provided near the inner end of the II bent side 1m. The inverted engaging portion is located on an upper surface of the X-extension bent portion.
A key switch device for improving a key pull-out force according to claim 4 or 44 or 45, wherein the key cap 1 is provided with a key limit structure, and the key limit structure is located at the II key assembly 1d. The keycap retaining portion is located at the cantilever end of the independently disposed key support sheet metal cantilever 1f.
A key switch device for improving a key pull-out force according to claim 4 or 44 or 45, wherein the engaging portion on the II key assembly 1d is supported by the keycap, the inverted engaging portion, and the key The cap retaining portion is formed by the end surface of the cantilever end of the key supporting sheet metal cantilever 1f, and the key supporting sheet metal cantilever 1f is located between the two inverted engaging portions, the independently arranged key supporting sheet metal Above the cantilever 1f, there is a key to make the space 1h; when the keycap of the key switch device is in the upper limit position, the scissors bending limit stop 16b is pressed on the end surface of the cantilever end of the key support cantilever 1f, the scissors bending limit The cantilever end of the stopper 16b enters the key above the key support sheet metal cantilever 1f to make the space 1h.
The key switch device for improving the key pull-out force according to claim 4, wherein the I-key assembly 1e is made of a transparent material, and the lower surface of the I-key assembly 1e is printed with the characters of the keycap 1 and The ground color, or the lower surface of the I-key assembly 1e, is plated with a metal film, and the characters are hollowed out on the plated metal film.
A key switch device for improving key pull-out force according to claim 4, wherein said key cap 1 is further provided with a III key assembly 1z, and said III key assembly 1z is located at the I key assembly 1e and II keys. Between the components 1d, the I key assembly 1e, the III key assembly 1z, and the II key assembly 1d are fixedly connected.
A key switch device for improving a key pull-out force according to claim 4, wherein the engaging portion of the II key assembly 1d is composed of a first bent portion 1s, a second bent portion 1y, and a third fold The curved portion 1v is configured, wherein the first bent portion 1s is located between the two second bent portions 1y, and the first bent portion 1s and the second bent portion 1y are formed by press forming the folding arc plate 1x and the guide panel. 1t is configured; the folding arc plate 1x of the first bent portion 1s and the folding arc plate 1x of the second bent portion 1y correspond to each other and the corresponding folding arc plate 1x cooperates with the upper matching portion of the scissor foot support, The guide panel 1t of the bent portion 1s is folded into the arc plate 1x, and the guide panel 1t of the second bent portion 1y corresponds to the inverted eight shape.
A key switch device for improving a key pull-out force according to claim 4 or 42 or 43, wherein said key limit structure of said keycap 1 is constituted by a separately provided key limit portion 1g.
A key switch device for improving a key pull-out force according to claim 42, wherein a chamfered end formed by a punched corner portion is provided on an outer side of a middle portion of the side of the cantilever end of the II bent side 1g. Part 1k; the upper end of the scissor foot support The scissor upper guide portion 16a is press-formed on both sides; when the II key assembly 1d is mounted, the inner surface of the scissor upper guide portion 16a supported by the scissor foot contacts the chamfered guide portion 1k, and the inner surface of the scissor upper guide portion 16a is attached The introduction is matched with the outer end surface of the II bent side 1g, and when the completed II key assembly 1d is moved up and down, the inner surface of the upper scissors guide portion 16a is engaged with the outer side surface of the II bent side 1g, and the II key assembly 1d is restricted from swinging left and right. .
A key switch device for improving a key pull-out force according to claims 40 to 52, wherein the key switch device is provided with a key cap 1, and the key cap 1 is provided with a key cap support fitting portion, The keycap support fitting portion is located on the lower plate surface of the II key assembly 1d.