WO2016180295A1

WO2016180295A1 - Key switch device provided with combination keycap having scissor limitation mating surface

Info

Publication number: WO2016180295A1
Application number: PCT/CN2016/081366
Authority: WO
Inventors: 陈�峰
Original assignee: 陈�峰
Priority date: 2015-05-09
Filing date: 2016-05-08
Publication date: 2016-11-17

Abstract

A key switch device provided with a combination keycap having a scissor limitation mating surface, said key switch device comprising a keycap (1), a reset body (11), a switch circuit (12), a support plate (15) provided with a mating portion, and scissor foot supports (16) provided with upper and lower mating portions, the scissor foot supports being respectively rotatably or slidably connected to the keycap and the mating portion of the support plate via the upper and lower mating portions, the scissor foot supports forming a synchronous linkage support structure via the mutual transfer of force, so as to ensure that the keycap moves up and down in parallel to the support plate, a mating portion of the keycap being formed of a keycap support mating portion, an upside-down mating portion and a key limitation structure. The key switch device having the scissor foot structure may be applied to computer keyboards, handheld computers, various types of embedded keyboards, and key switch devices performing keystroke operations. The key switch device is ultra-light and ultra-thin.

Description

Key switch device with combined keycap with scissors limit matching surface

Priority statement:

Claims 15 to 17 and claim 28 of the present invention claim the priority of the claims and the corresponding embodiments of the invention patent application No. 2015103291395 filed on Dec. 2015.

Claims 18 to 22 of the present invention claim priority from the claims of the invention patent application No. 2015102320193 to the Chinese National Intellectual Property No. 2015-05-09 and the corresponding embodiments.

Claims 1 to 31 of the present invention claim priority from the claims of the invention patent application No. 2016101068388 to the Chinese National Intellectual Property No. 2016-02-28 and the corresponding embodiments.

Claims 1 to 31 of the present invention claim priority from the claims of the invention patent application No. 2016102914247 to the Chinese National Intellectual Property No. 2016-05-05 and the corresponding embodiments.

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

In a thin type, that is, a low-height type keyboard mounted in a portable electronic device such as a notebook type or a palm-sized computer, the key switch device that requires the hitting operation is lowered in height, and the operability is improved, that is, the hand feels good--- --. In general, a key switch device that can be used in a low-height type keyboard is provided with: a support plate (for example, a metal plate or a lower bottom plate of a keyboard); a key cap disposed above the support plate; and interlocking with each other and mounted on the support plate A pair of plastic scissor foot members that guide and support the keycap in the vertical direction; a switching mechanism corresponding to the contact portion of the opening and closing circuit of the lifting and closing movement of the keycap. By synchronizing the pair of plastic scissor foot members with each other, the key cap can maintain the posture parallel to the support plate in a substantially vertical direction with respect to the support plate, and simultaneously perform the lifting movement. The keystroke operation characteristics of the key switch device are subject to the stroke amount of the lifting and lowering action of the key cap, the rigidity of the plastic scissor foot member, the gap between the plastic scissor foot member and the key cap, and the keystroke operation characteristic accompanying the so-called keystroke feeling in the lifting motion. Impact.

Referring to FIG. 1 and FIG. 2, the key structure device of the prior keyboard includes a key cap 1, an elastic body 11, a switch circuit 12, a support plate 15 having a fitting portion, a scissor foot support 16 having an upper and lower fitting portion, and a scissor foot support 16 passing through The upper and lower fitting portions are respectively rotated or slidably coupled with the mating portions of the keycap 1 and the support plate 15, and the scissor-leg supports 16 which are X-shaped from the side as viewed from the side constitute a synchronous linkage support structure by the mutual force transmission between the middle portions to ensure the keys. The cap 1 moves up and down parallel to the support plate 15.

The switching circuit of this embodiment adopts a commonly used switching circuit 12, that is, a membrane switching piece, and the switching circuit can be any switching circuit that can detect the pressing of the key.

The mating portion of the support plate 15 is composed of a support plate rotating portion 13 and a support plate sliding portion 14, and the scissor foot support 16 (both produced by plastic) is composed of a right scissor foot 4 and a left scissor foot 8, and the upper and lower fits of the scissor foot support 16 The parts are respectively composed of a lower hinge shaft 9, a lower shaft 7 and a scissor upper rotating portion 10, and a scissor upper sliding portion 6. The synchronous linkage supporting structure is composed of a central shaft 5 on the right scissor base 4 and an outer frame on the plastic left scissor foot 8. The hole 5c is hinged.

The device is hinged by a central shaft 5 on the right scissor foot 4 made of plastic and a central hole on the left scissor foot 8 made of plastic, and the lower hinge shaft 9 and the lower shaft 7 are respectively rotated with the support plate on the support plate 15. 13 and the strut sliding portion 14 are in a rotational fit and a sliding fit. The upper rotating portion 10 and the upper sliding portion 6 of the scissors are respectively slidably engaged with the keycap sliding portion 3 and the key cap rotating portion 2 of the keycap 1 to form a plastic X supporting structure device, and are elasticized by a circular arch. The rubber cap 11 pushes up the keycap 1 , and the linkage of the left scissor foot 8 and the right scissor foot 4 is formed by a pivotal fit of the central pivot 5 and the central hole 5c respectively located near the middle of the scissor arm; the left scissor foot 8. The connecting portion of the right scissor foot 4 and the keycap 1 and the support plate 15 respectively is a scissor upper rotating portion 10, a sliding shaft 7, and a scissor upper sliding portion 6, and a lower hinge shaft 9 respectively distributed at the upper end or the lower end of the scissor arm. In the embodiment, 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 the reset body can also be a commonly used magnetic body that is mutually disassembled.

The rubber ring 11 is mounted and fixed on the upper surface of the switch circuit 12, and the switch circuit 12 is mounted and fixed on the upper surface of the support plate 15, and the support rotating portion 13 and the support sliding portion 14 of the support plate 15 are worn. There is a corresponding through hole on the switch circuit 12 and is located near the upper surface of the switch circuit 12.

Referring to FIG. 1 and FIG. 2, the key portion of the keycap 1 is formed by a keycap sliding portion 3 or a key cap rotating portion 2, wherein the keycap sliding portion 3 is composed of a key upright limiter 3a, a key reverse fitting surface 3c, and a key matching plane. 3b is configured, the key upright limiter 3a, the key upset mating face 3c, and the key engaging plane 3b are smoothly connected together, the keycap rotating part 2 is opened downward, and the keycap rotating part 2 is rotatably engaged with the scissors upper rotating part 10.

Referring to FIG. 2, 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 limits the upper and lower degrees of freedom. When the key cap 1 moves up and down, the upper sliding portion of the scissors 6 slid in the space between the key reverse matching surface 3c and the key matching plane 3b, and when the keycap 1 is applied without an external force, the upper sliding portion 6 of the keycap 1 is pressed under the elastic force of the rubber elastic ring 11. In the key upright limit gear 3a, at this time, the key cap 1 is at the upper limit position, and the key reverse fit surface 3c, the key fit plane 3b, and the key upright limit gear 3a of the mating portion of the existing key cap 1 are all set in the same Within the structure.

Problems with the plastic elastic limit structure of the existing plastic keycap:

Since the birth of the keyboard, the plastic elastic limit structure is set on the keycap 1 of the notebook keyboard. See Figure 2--1 to Figure 2--5. When the keycap 1 is installed, the keycap sliding part 3 is first installed on the scissors. On the upper sliding portion, the keycap is further rotated downward to contact the keycap rotating portion 2 with the upper rotating portion 10 of the scissors. During the pressing process, two short and thick plastic elastic limiting structures of the keycap rotating portion 2 are required to be produced. Deformation of 0.15mm on one side, enter the matching space of the rotation part 2 of the keycap after deformation, and two pieces of short and thick plastic elastic limit The width B1 of the bit structure is about 0.7mm, the length H1 is about 1.6mm, B1/H1=0.4375. Since the plastic is a plastic material, the short and thick plastic elastic limit structure has poor elasticity, low strength and small interference of the limit. In addition, the thinner and thinner the notebook keyboard, the two short and thick plastic elastic limit structures (H1 size) of the key cap rotating portion 2 limit the design of the low height of the keycap 1, and at the same time, due to the influence of injection molding defects and the rotation of the key cap The two short and thick plastic elastic limit structure molds of the part 2 need to be inclined and the like. The two pieces of short and thick plastic elastic limit structure causing the key cap rotating portion 2 have a high defect rate and a high defect rate during use.

1. The keycap 1 of the notebook keyboard is very prominent after leaving the factory. The problem of the drop-off of the notebook keyboard and the failure of the switch contacts are the two most urgent problems to be solved in the current notebook keyboard;

2. The plastic elastic limit structure of the keycap 1 of the notebook keyboard has the influence of injection molding defects;

3. The short-and-thick plastic elastic limit structure of the key top of the notebook keyboard 1 has a interference of unilateral 0.15mm. When the interference is too small, the key phenomenon is easy to occur; when the interference is excessive When large, the two pieces of short and thick plastic elastic limit structure of the key cap rotating portion 2 are prone to failure of the fracture and the hidden failure of the buried fracture;

4. Two short and thick plastic elastic limit structures have poor elasticity and low strength;

5, the injection precision is lower than the stamping precision of the thin plate, precision injection molding - the tolerance of the small-sized structural injection molded parts is 0.08mm, the linear size stamping---the punching precision of the thin plate is 0.026mm, and the punching and bending precision of the thin plate is 0.5 degree;

6, thinning the key cap, is bound to shorten - short and thick plastic elastic limit structure, short and thick plastic elastic limit structure shortened, resulting in short and thick plastic elastic limit structure elastic lower limit, limiting the further low height of the keycap Design.

Existing sheet metal scissors foot support problems:

Referring to Fig. 3, Fig. 4 and Fig. 5, the scissor foot support 16 of the sheet metal stamping forming is formed by a plate surface of 0.25 mm-0.7 mm thick, and the upper fitting portion and the lower fitting portion of the scissor foot support 16 are respectively located at the scissor arm. The upper end plate upper extending boss 23 and the lower end plate surface extending boss 24 are formed at the upper end and the lower end, and the upper end plate surface extending boss 23 and the lower end plate surface extending boss 24 are punched and formed into a square-shaped boss. The upper end plate extending boss 23 and the lower end plate extending boss 24 can be punched and chamfered to remove the burrs (the chamfer can be turned into a straight surface, or can be a circular arc surface or an inverted circular surface), and the scissor foot support 16 consists of a left rigid scissor foot 25 and a right rigid scissor foot 26.

On the inner side and the outer side of the two scissor legs 18 of the scissor foot support 16, there are two extension plates 19 extending from the plate surface of the scissor foot support 16 and extending in the same direction along the length of the scissor foot arm 18, extending the plate surface 19 and The utility model is bent downward along the thickness direction of the scissor arm 18, and the cantilever end of the extension plate surface 19 has a stamped and formed cantilever arc 21 which is located near the lower plate surface of the scissor arm 18 and is located in the longitudinal direction of the scissor arm 18 Near the middle portion, the upper support surface 20 of the scissors is located near the middle of the lower surface of the scissor arm 18 and is part of the lower surface of the scissor arm 18 of the flat plate.

The existing key structure device using the sheet metal scissor foot support 16 includes a key cap 1 (not shown), an elastic body 11 (not shown), a switch circuit 12 having a switch contact, and a support plate having a mating portion. 15. Scissor foot support with upper and lower matching parts 16. The corner portion of the upper end plate extending projection 23 of the scissor foot support 16 and the corner portion of the lower end plate surface extending boss 24 (the corner portion of the figure has been rounded) are respectively engaged with the key cap 1 and supported. The mating portions of the plate 15 are rotated or slidably connected, wherein the upper support surface 20 of the scissor foot support 16 and the punch cantilever arc 21 of the other scissor foot support 16 and the upper support surface 20 of the scissor support 16 support each other to form a middle portion. The transmission of forces between the adjacent ones constitutes a synchronous linkage support structure to ensure that the keycap 1 moves up and down parallel to the support plate 15.

When the keycap 1 is pressed, the keycap 1 pushes the upper fitting portion of the left rigid scissor foot 25 and the right rigid scissor foot 26 outwardly along the lower surface of the keycap 1 against the elastic force of the elastic body 11 (not shown). The lower matching portion of the left rigid scissor foot 25 and the right rigid scissor foot 26 is rotatably or slidably engaged with the mating portion of the support plate 15, while the punching cantilever arc 21 slides along the upper support surface 20 of the scissors; the key cap 1 moves downward to the key The bottom surface of the cap 1 is in contact with the switch circuit 12 having the switch contact to reach the lower limit position, and the boss in the elastic body 11 (not shown) triggers the switch on the switch circuit 12 having the switch contact to the lower limit position. The circuit (not shown), after the external force of the keycap 1 is removed, the keycap 1 is reset to the upper limit position by the elastic force of the elastic body 11 (not shown).

Compared with the support of sheet metal scissors, the commonly used plastic scissor foot support has poor strength, poor rigidity and poor precision, and there are injection molding defects in the injection molding production, which can not achieve further low height of the keyboard. Automated installation, etc. At the same time, the production efficiency of the scissor foot support is much lower than that of the stepping die. The stepping die is also called the high speed die, which has high efficiency, high life and high precision. It is called the modern three high mold. The use of sheet metal scissor foot support instead of the commonly used plastic scissor foot support is the trend of the times. However, the following problems with the existing sheet metal scissor support affect its overall promotion.

The sheet metal scissor foot support has the advantages of high strength, high rigidity, high production efficiency, and low production equipment cost. However, the existing sheet metal scissors support has the following problems:

1. The upper fitting portion and the lower fitting portion of the scissor foot support 16 are formed by punching sheet metal into a boss having a square cross section, and the corners of the bosses having a square cross section are respectively matched with the mating portions of the key cap and the support plate. During use, the corners of the bosses of the scissor foot support 16 accelerate the wear of the key cap and the support plate, resulting in rapid loss of precision of the scissor foot support, the key cap, and the support plate;

2. The corner of the boss with a square cross section is chamfered----can be inverted into a straight surface, a circular arc surface, or an inverted circular surface. The chamfering process of the sheet metal is difficult (especially with a thinner Metal plate), and there are problems such as poor chamfering accuracy and poor surface finish;

3. When the scissor foot support 16 is made of a very thin metal plate, if a metal plate of 0.1 mm---0.2 mm is used, chamfering the corner of the boss having a square cross section is an impossible task, and the cross section is square. The thickness of the boss is thin to a certain extent and becomes a blade;

4. When the scissor foot support 16 is made of a thin metal plate (for example, a metal plate of 0.08 mm---0.2 mm), the space between the key reverse-fitting surface 3c and the key-fitting plane 3b cannot be injection-molded (see figure). 3-- Figure 5 key reverse button mating surface 3c and key fit The plane 3b position corresponds to), when the height dimension of the space is 0.08mm---0.15mm, the injection mold adopts the alloy sheet of 0.08mm---0.15mm, and the sheet can neither be processed nor strength;

5. The matching part of the scissor foot support 16 cannot be oversized, and the current popular keycap mounting method cannot be used, and the installation method of the currently popular scissor foot support 16 cannot be adopted;

6. The existing sheet metal scissor foot support adopts a plate thickness of 0.4 mm or more, and the material cost is high, which affects the further low height of the keyboard (the two existing sheet metal scissor foot supports are stacked up to 0.8 mm thick).

How to improve the wear resistance of the scissor foot support, key cap and support plate; how to use the thin metal plate to produce the scissor foot support to reduce the material cost, and at the same time realize the further low height of the keyboard, is it possible to support the existing sheet metal scissor foot support? It replaces the commonly used plastic scissor foot support problem.

Summary of the invention

The object of the present invention is to provide a smooth surface of a stamping process and a smooth plate supported by a scissor foot to achieve a high-precision cooperation with the key cap and the support plate, and to realize a notebook keyboard super by a combination of key caps. Low design.

The technical solution of the present invention is realized as follows: the key switch device of the combined keycap with the scissors limit matching surface of the present invention comprises a key cap, a reset body, a switch circuit, a support plate with a matching portion, and an upper and lower matching portion. The scissor foot support, the scissor foot support is rotated or slidably connected with the mating portions of the key cap and the support plate through the upper and lower mating portions respectively, and the scissor foot support constitutes a synchronous linkage support structure by mutual force transmission to ensure that the key cap is parallel to the support The plate is used for lifting movement, wherein the engaging portion of the keycap 1 is composed of a keycap supporting portion, an inverted engaging portion and a key limiting structure; the keycap 1 is composed of an I key assembly 59 and an II key assembly 63, and the I key The component 59 is fixedly connected to the II key assembly 63. The I key assembly 59 is located above the II key assembly 63. The II key assembly 63 is formed by sheet metal stamping. The II key assembly 63 is stamped and formed with an I-folded edge 60 and a folded edge 62. Wherein, the I-bend edge 60 is connected to the upper plate surface of the II key assembly 63 at a certain angle, and the II-bend edge 62 is connected to the I-folded edge 60 at an angle; the inverted-fitting portion is located at the II bend Near the inner end of the side 62.

Further, the key limit structure of the keycap 1 is composed of independently arranged key limit end faces 31.

Further, the I-bend side 60 and the II-bend side 62 of the II key assembly 63 are both bent in the x direction to form the x-direction bent portion 68, and the cantilever of the II-folded side 62 on the x-direction bent portion 68. The end points to the inside of the key, and the inverted engagement portion is located near the cantilever end of the II bent side 62.

Further, the I-bend side 60 and the II-bend side 62 of the II key unit 63 are both bent in the y-direction to form the y-direction bent portion 61, and the inverted-fitting portion is located inside the II-bend side 62.

Further, the inner side of the II bent side 62 has a front side curved side 65 formed by bending a certain angle in the Z direction, and the inverted engaging portion is formed by an arcuate inverted interlocking arc 28a.

Further, the inverted engaging portion is formed by an arcuate inverted snap-fit arc 28a.

Further, the inverted engaging portion is located at an upper corner portion of the inner end portion of the II bent side 62.

Further, a chamfered guide portion 69 formed by a punched corner portion is provided on the outer side of the middle portion of the II bent portion 62 at the cantilever end of the bent side 62; the upper and lower sides of the upper end of the scissor foot are stamped and formed with a scissor upper bending guide portion 70; when the II key assembly 63 is mounted, the inner surface of the scissor upper bending guide portion 70 supported by the scissor foot is in contact with the chamfering guide portion 69, and the inner surface of the scissor upper bending guide portion 70 is introduced and the II bent portion 62 is introduced. The outer end surface of the scissor guide member 70 is fitted to the outer surface of the II bent portion 62 to restrict the lateral movement of the II key assembly 63 to the left and right.

Further, the key switch device is provided with a key cap 1 provided with a key cap support fitting portion, and the key cap support fitting portion is located at a lower plate surface of the key support cantilever plate 64 of the II key assembly 63.

Further, the keycap support engaging portion is formed by a press-fit arc formed by the cantilever-shaped key supporting cantilever plate 64, and the press-fit arc constitutes the key engaging shoulder 29.

Further, the key switch device is provided with a key cap 1 , and the key cap 1 is provided with a key limit structure, and the key limit structure is connected by the key bending limit plate 66 connected with the key limit cantilever plate 67 at a certain angle. The key limit end face 31 is formed, and the key bend limit plate 66 is located at the cantilever end of the key limit cantilever plate 67.

Further, the key cap 1 is composed of an I key assembly 59 and an II key assembly 63. The key cap 1 is provided with a key cap support fitting portion and a key limit structure, and the key cap support mating portion and the key limit structure are located at the I key assembly 59. on.

Further, the keycap 1 is composed of an I key assembly 59 and an II key assembly 63. The I key assembly 59 is injection molded, and the keycap support fitting portion is constituted by the key fitting shoulder 29.

Further, the I key assembly 59 has a downwardly extending key extension matching boss 71. The keycap support engaging portions are located on the shoulders on the left and right sides of the keying engagement boss 71, and the keycap support mating portions are matched by the keys. The shoulder 29 is formed, and the key limiting structure is constituted by the key limiting end face 31 on the key limiting boss 30.

Further, the key switch device is provided with scissor foot support, the scissor foot support is stamped and formed on the metal plate surface; the scissor foot support is formed with an elastic sheet metal elastic arm, and the scissor foot supports the stamped and formed scissors anti-off structure; The keycap 1 is provided with a key limiting end surface 31, and the mutually supported scissor foot supports a limit fit with the key limiting end surface 31 of the keycap 1 through the scissors anti-drop structure, preventing the key from coming off or restricting the keycap 1 In the upper limit.

Further, when the key cap is installed, the engaging portion of the key cap 1 and the key limiting end surface 31 force the elastic deformation of the sheet metal elastic cantilever, and the scissors anti-off structure passes over the key end end surface 31 to enter the key cap 1 In the mating space of the portion, under the action of the restoring force of the resetting member, the scissor retaining structure is pressed against the key end end face 31 of the keycap 1, and the keycap 1 is restricted to the upper limit position.

Further, the key limiting end face 31 is independently disposed on the keycap 1, and the scissors retaining structure is supported by the scissor foot. A separate set of scissors bending limit stops 33 is formed.

Further, the key switch device is provided with a scissor foot support, and the scissor foot support is rotated or slidably connected with the mating portion of the key cap 1 through the thickness dimension between the upper plate upper surface 35 of the scissors and the upper surface 36 of the scissors upper end plate.

Further, the upper surface 35 of the scissors and the lower surface 36 of the upper end of the scissors are flat plates.

Further, the key switch device is provided with a scissor foot support, and the upper mating portion supported by the scissor foot is composed of a scissor upper support portion, a scissor upper end lower plate surface 36 supported by the scissor foot, and a scissors anti-drop structure, wherein the upper support portion of the scissor The keycap support engaging portion of the keycap 1 is engaged, and the upper upper end surface 36 of the scissors located at the upper end of the scissor foot support cooperates with the inverted engaging portion on the key reverse boss 28 of the keycap 1.

Further, the key switch device is provided with a scissor foot support, and the scissor foot support is further provided with a scissor lower support portion, and the lower scissors support portion is formed by a scissor-fitted arc 39 located at a lower end of the scissor foot support, and the scissor presses the lower arc 39 The punching scissors foot supports an arc formed by the plate faces on the left and right sides, and the scissoring under the arc 39 is located on the lower plate surface supported by the scissor foot.

Further, the key switch device is provided with a scissor foot support, the upper leg portion of the scissor foot support is provided with a scissor foot support, and the upper mating portion of the scissor foot support is supported by the scissor upper support portion and the scissor foot. The scissor anti-detachment structure is configured, the lower upper plate surface 36 of the scissors is flat, the inverted engagement portion is formed by the inverted engagement arc 28a, and the upper support portion of the scissors is composed of the upper plate surface supported by the scissor foot.

Further, the keycap 1 is provided with a magnetic body, and the I key assembly 59 and the II key assembly 63 are connected by a magnetic body.

Further, the magnetic body is distributed near the four corners of the keycap 1.

Further, the key cap 1 is provided with a magnetic body, and the magnetic force of the magnetic body presses the scissors bending limit stop 33 constituting the scissors anti-detachment structure on the key limit end surface 31, and the key cap 1 is at the upper limit. Bit.

Further, the magnetic body is fixedly connected with the scissors bending limit stop 33, and the magnetic conductive material or the magnetic body or the scissors bending limit position 33 is disposed on the key limiting end surface 31 by using a magnetic conductive material at the key limit. A magnetic body is provided on the end surface 31.

Further, the connection of the I key assembly 59 and the II key assembly 63 is through the end of the I key edge flange 74 or the end of the I key edge ring 73, and the II key assembly 63 is pressed against the I key assembly 59. Realized on the bottom surface, the vertical side of the key is stamped and formed around the outer shape of the I key assembly 59, and the vertical side of the key is at an angle of about 90 with the surface of the I key assembly 59; the I key edge ring is formed by pressing the ring inwardly at the vertical side of the key. The barrel 73, or the inwardly punched flange at the upside of the key, forms an I key edge flange 74.

The key switch device of the combined keycap with the scissors limit matching surface of the invention comprises a key cap, a reset body, a switch circuit, a support plate with a matching portion, a scissor foot support with an upper and lower matching portion, and a scissor foot support through the upper and lower sides The mating portions are respectively rotated or slidably connected with the mating portions of the key cap and the support plate, and the scissor foot supports constitute a synchronous linkage support by the mutual force transmission The structure is configured to ensure that the key cap is parallel to the support plate for lifting movement, and the utility model is characterized in that: the scissor foot support is formed with an elastic sheet metal elastic arm, and the scissor foot supports a stamping-shaped scissors anti-off structure; the key cap 1 is provided with The key limiting end face 31, the mutually supported scissor foot support is restrained by the scissors retaining structure and the key limiting end face 31 of the keycap 1 to prevent the key from coming out or to limit the keycap 1 to the upper limit position; The body is made of a magnetic body, and a magnetic body is disposed on the key end surface 31 of the keycap 1 or on the scissor-preventing structure supported by the scissor foot that is slidably engaged with the keycap 1. The magnetic force of the magnetic body will constitute the scissors. The structure of the scissors bending limit stop 33 is pressed against the key limit end face 31, at which time the key cap 1 is at the upper limit position.

The key switch device of the combined keycap with the scissors limit matching surface of the invention comprises a key cap, a reset body, a switch circuit, a support plate with a matching portion, a scissor foot support with an upper and lower matching portion, and a scissor foot support through the upper and lower sides The mating portions are respectively rotated or slidably connected with the mating portions of the key cap and the support plate, and the scissor foot supports constitute a synchronous linkage support structure by the mutual force transmission to ensure the lifting and lowering movement of the key cap parallel to the support plate, and the feature is: I The key assembly 59 is connected to the II key assembly 63 by the end of the I key edge flange 74 or the end of the I key edge ring 73. The II key assembly 63 is pressed against the bottom surface of the I key assembly 59, and the key is erected. The edge is stamped and formed around the outer shape of the I-key assembly 59. The vertical side of the key is at an angle of about 90 with the surface of the I-key assembly 59. The I-shaped edge ring 73 is formed by pressing the ring inwardly at the vertical side of the key, or at the key. The erect edge punches the flange inward to form an I key edge flange 74.

Further, the engaging portion of the II key assembly 63 is composed of the first bent portion 77, the second bent portion 78, and the third bent portion 79, wherein the first bent portion 77 is located at the two second bent portions 78. The first bent portion 77 and the second bent portion 78 are both formed by the press-formed folding arc plate 76 and the guide panel 75; the folding curved plate 76 of the first bent portion 77 and the second bent portion The position of the folding arc plate 76 of 78 corresponds to the corresponding matching arc plate 76 and the upper matching portion of the scissor foot support. The guiding panel 75 of the first bending portion 77 is folded with the arc plate 76 and the second bending portion 78. The guiding panel 75 is correspondingly positioned and is in an inverted eight shape; the third bending portion 79 is formed by a flat guiding plate 80 formed by a flat bending edge, an upright bending edge, and a cantilever end of the flat folding side, The flat folding side, the upright bending side, and the flat guiding plate 80 constitute a sliding engagement portion of the keycap.

Further, the engaging portion of the supporting plate 15 is composed of a supporting portion of the supporting plate, an inverted engaging portion on the cantilever plate 42 of the supporting plate, and at least one opening limiting portion of the supporting plate, and the limiting portion of the supporting plate is disposed on the supporting plate of the supporting plate An opening of the matching space between the plate 42 and the supporting plate 15 is provided with a supporting plate opening limiting arc surface on the supporting opening portion of the supporting plate; the lower plate upper surface 41 of the scissors cooperates with the inverted engaging portion of the supporting plate 15 , the scissors The scissors limit matching portion of the foot support 16 cooperates with the support plate opening limit arc surface on the support opening limit portion of the support plate, and the support plate support portion and the lower support portion of the scissors support and cooperate; the support plate opening limit arc surface is opened by the support plate I limit arc 55, support plate opening II limit arc 54, the scissors limit matching portion is composed of scissors I limit surface 56, scissors II limit surface 57, wherein the support plate opening I limit arc 55 and scissors I The limiting surface 56 is limitedly engaged, and the support opening II limiting arc 54 is engaged with the scissors II limiting surface 57; the center of the supporting plate opening I limiting arc 55 is located near the mating portion of the adjacent supporting plate 15.

The positive effects of the present invention are:

The positive effect of using the ultra-thin scissor foot support to achieve the face-to-face cooperation with the key cap and the support plate is:

1. The keycap 1 is composed of an I key assembly 59 and an II key assembly 63. The I key assembly 59 is connected to the II key assembly 63. The I key assembly 59 is located above the II key assembly 63. The II key assembly 63 is formed by sheet metal stamping. The key switch device is ultra-low height, the key switch device has a minimum height of only 0.87 mm at the lowest limit position, and the existing key switch device has a minimum height of 1.8 mm at the lowest limit position;

2. The inverted boss of the plastic keycap 1 is eliminated, the production process of the keycap 1 is simplified, and the mold cost is greatly reduced.

The existing injection cap of the key cap has four inverted bosses (see FIG. 1) and the keycap 1 has a small structure, and the injection mold has a complicated structure and high cost (the existing mold produces 64 keys per mold). Cap 1, a total of 4X64 inclined top mechanism is required to form the inverted boss of the keycap 1);

3. The upper and lower smooth flat plates supported by the scissor feet respectively realize the surface matching with the key cap and the support plate, greatly improve the matching precision, improve the wear resistance between the parts, and the key switch device is durable;

4. The upper matching portion of the scissor foot support 16 is composed of a flat plate surface and an independent anti-detachment structure of the scissors, which simplifies the stamping process of the scissor foot support 16 and improves the processing precision of the scissor foot support 16;

5. The matching surface of the scissor foot support 16 and the key cap is separately arranged from the scissor anti-separation structure, so that the plate surface of the matching surface of the scissor foot support 16 and the key cap is simple and flat, and the planar plate surface does not need to be processed. , improve the matching precision and machining accuracy (the more the stamping times of sheet metal, the worse the machining accuracy is, the more the number of sheet metal plastic deformations is, the worse the machining accuracy is);

6. The lower fitting portion of the scissor foot support 16 is composed of a flat upper scissors upper plate surface 41, a scissors limit fitting portion, and a scissors lower support portion, and only the left and right side plates of the lower end of the scissor foot support 16 are folded. The bending, that is, the lower support portion of the scissor having a curved surface shape, is formed by the planar upper surface of the upper end surface 41 of the scissors and the lower support portion of the curved surface of the scissor and the mating portion of the support plate 15 to improve the cooperation. Accuracy and machining accuracy;

7. Providing a support opening limit portion at an opening of the mating space between the support plate 42 and the support plate 15, so that the key cap is more convenient to install, especially when the key cap is manually mounted on the scissor support 16. In the installation process, the scissor foot support 16 is removed from the opening of the mating space between the support plate 42 and the support plate 15 to affect the installation of the key cap, so that the key cap installation is more convenient and quick;

8. The support opening limit portion is provided at the opening of the mating space between the support plate 42 and the support plate 15, so that the rotary mounting of the scissor support 16 is more convenient, and the scissor support 16 is rotated when the scissor support 16 is mounted. Rotating, the support opening limit portion gradually pushes the scissor foot support 16 into the mating space between the support plate cantilever plate 42 and the support plate 15, so that the lower plate upper surface 41 of the scissors is formed to cooperate with the inverted engagement portion. It is convenient for manual installation and improves the reliability of the automatic installation of the scissor foot support 16;

9. Set a support plate opening I limit arc 55 and a support plate opening II limit arc 54 on one of the support opening limits of the support plate to realize the support The plate opening I limit arc 55 is matched with the scissors I limiting surface 56, and the plate opening II limit arc 54 is matched with the scissors II limiting surface 57, and the center of the plate opening I limit arc 55 is ensured at the same time. In the vicinity of the contact point between the lower support portion of the scissors and the support portion of the support plate, this solution enables the pair of scissor foot supports 16 supported by each other to limit the amount of displacement of the scissor foot support 16 in the horizontal direction when the angle a is reduced, thereby ensuring the keycap more. Move up and down in parallel, set the plate opening I limit arc 55, the plate opening II limit arc 54, so that the face matching scheme is more perfect;

10. The support of the scissor foot with ultra-thin thickness reduces the thickness of the support of the scissor foot by double, further realizes the low height of the key;

11. The independent anti-offset structure of the scissors is composed of a metal elastic limit structure. The elastic limit structure of the sheet metal scissors feet has good elasticity and high strength, and can increase the interference of the limit (up to 0.5mm), so that the keys The cap and the metal scissors feet have high reliability. The keycap 1 becomes a maintenance-free fully rigid structure, which greatly reduces the defective rate of the keycap 1 and completely solves the problem of the old keyboard keyboard being used when the keyboard is used;

12. The elastic limit structure of the sheet metal scissors foot has no injection defects, and the elastic limit structure of the sheet metal scissors foot does not suffer from fracture failure. Hidden danger of deformation failure;

13. The lower height design of the keycap can be further realized, and the material cost of the scissor foot support can be doubled. The thickness of the aluminum alloy scissor foot support is reduced from the current 0.4 mm to 0.15 mm; the thickness of the steel scissor foot support is now 0.4mm thinning is 0.08mm;

14. The corner chamfering process is eliminated, which simplifies the stamping process of the scissor foot support;

15. The matching portion of the key cap is arranged in the width direction of the key by the key reverse matching surface 3c and the key matching plane 3b, that is, the key reverse matching surface 3c is located beside the key matching plane 3b, completely solving the use of the ultra-thin scissors foot. When supporting, the mating portion of the key cap is between the key matching surface 3c and the key matching plane 3b;

16. The key upright limiter 3a is integrated with the key reverse fit surface 3c, and the key limit structure is independently set, the key flip joint surface 3c of the key cap is opened inward, and the key is inverted. Face 3c sets the front bevel to create a condition for the new installation of the real keycap on the upper limit. (The existing key switch device supported by plastic scissor feet, when the plastic scissor foot support is at the lower limit position, the key cap is installed)

The key switch device of the metal scissor foot structure can be widely applied to a computer keyboard, a palmtop computer, various embedded keyboards, and a key switch device for performing a keystroke operation. The strength and structural rigidity of the scissor foot support structure are greatly improved, and the metal scissor foot realizes ultra-light and ultra-thin and further realizes miniaturization of the key device.

The key switch device supported by the face-to-face scissors foot can be widely applied to computer keyboards, palm-sized computers, various embedded keyboards, and key switch devices for performing keystroke operations. The invention doubles the material cost of the scissor foot support, simplifies the stamping process of the scissor foot support, greatly improves the fitting precision of each part, and improves the wear resistance between the parts.

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 may also be used to obtain other drawings based on these drawings without departing from the art.

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 2-1 is a diagram showing the installation process of an existing keycap supported by an existing plastic scissor foot;

Figure 2-2 is a diagram showing the installation process of an existing keycap supported by an existing plastic scissor foot;

Figure 2-3 is a diagram showing the installation process of an existing keycap supported by an existing plastic scissor foot;

Figure 2-4 is a diagram showing the installation process of an existing keycap supported by an existing plastic scissor foot;

Figure 2-5 is a diagram showing the installation process of an existing keycap supported by an existing plastic scissor foot;

Figure 3 is a cross-sectional view showing a key device of the prior sheet metal scissor foot support in an upper limit position;

Figure 4 is a cross-sectional view showing a key device of a conventional sheet metal scissor foot support in a lower limit position;

Figure 5 is a cross-sectional view showing a key device of a conventional sheet metal scissor foot support at a lower limit;

Figure 6 is a perspective view of a keycap of the present invention;

Figure 7 is a perspective view of the key device of the scissor foot of the present invention installed in the upper limit position;

Figure 8 is a perspective view of the key device of the scissors foot of the present invention installed in the upper limit position;

Figure 9 is a front elevational view of the key device of the present invention;

Figure 10 is a side view of Figure 9;

Figure 11 is a cross-sectional view taken along line A-A of Figure 9;

Figure 12 is a perspective view of the keycap of the key device supported by the scissor foot of the eight-type mounting of the present invention;

Figure 13 is a perspective view of the key device of the eight-type mounted scissor foot support of the present invention;

Figure 14 is a front elevational view of the key device of the eight-type mounted scissor foot support of the present invention;

Figure 15 is a cross-sectional view taken along line C-C of Figure 14;

Figure 16 is a cross-sectional view taken along line B-B of Figure 14;

Figure 17 is a cross-sectional view taken along line D-D of Figure 14;

Figure 18 is a cross-sectional view showing the key device of the inverted eight-type mounted scissor foot support of the present invention;

Figure 19 is a cross-sectional view showing the key device of the inverted eight-type mounted scissor foot support of the present invention;

Figure 20 is a cross-sectional view showing the key device of the inverted eight-type mounted scissor foot support of the present invention;

Figure 21 is a perspective view of the support plate 15 of the present invention having a plate opening limit arc surface;

Figure 22 is a perspective view of the key device of the support plate 15 having the support opening limit arc surface of the present invention;

Figure 23 is a front elevational view showing the key device of the support plate 15 having the support opening limit arc surface of the present invention;

Figure 24 is a cross-sectional view taken along line G-G of Figure 23;

Figure 25 is a cross-sectional view taken along line F-F of Figure 23;

Figure 26 is a cross-sectional view taken along line E-E of Figure 23;

Figure 27 is a side view of Figure 23;

Figure 28 is a perspective view of the I-key assembly 59 of the present invention;

Figure 29 is a perspective view of the II key assembly 63 of the present invention;

Figure 30 is a perspective view of the keycap 1 of the present invention;

Figure 31 is a perspective view of the key device of the present invention;

Figure 32 is a perspective view of the key device of the present invention;

Figure 33 is a front elevational view of the key device of the present invention;

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

Figure 35 is a cross-sectional view of Figure 33;

Figure 36 is a cross-sectional view of Figure 33;

Figure 37 is a cross-sectional view of Figure 33;

Figure 38 is a perspective view of another II key assembly 63 of the present invention;

Figure 39 is a perspective view of the key device of the present invention;

Figure 40 is a front elevational view of the key device of the present invention;

Figure 41 is a front elevational view of the key device of the present invention;

Figure 42 is a cross-sectional view of Figure 41;

Figure 43 is a cross-sectional view of Figure 33;

Figure 44 is a perspective view of another I-key assembly 59 of the present invention;

Figure 45 is a perspective view of another II key assembly 63 of the present invention;

Figure 46 is a perspective view of another keycap 1 of the present invention;

Figure 47 is a perspective view showing the connection of the I-key assembly 59 and the II key assembly 63 of the present invention;

Figure 48 is a cross-sectional side view showing the connection of the I key assembly 59 and the II key assembly 63 of the present invention;

Figure 49 is a cross-sectional side view showing the connection of the I key assembly 59 and the II key assembly 63 of the present invention;

Figure 50 is a perspective view of another II key assembly 63 of the present invention;

Figure 51 is a perspective view showing the connection of the I-key assembly 59 and the II key assembly 63 of the present invention;

Figure 52 is a cross-sectional side view showing the connection of the I-key assembly 59 and the II key assembly 63 of the present invention.

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. 11 , a key switch device with a mating portion of the present invention includes a key cap, a reset body, a switch circuit, a support plate having a mating portion, and a scissor foot support having an upper and lower mating portion. The scissor foot support is rotated or slidably connected to the mating portions of the key cap and the support plate through the upper and lower fitting portions respectively, and the scissor foot support constitutes a synchronous linkage support structure by the mutual force transmission to ensure that the key cap moves up and down parallel to the support plate.

The scissor foot support 16 is formed with an elastic sheet metal elastic arm, and the scissor foot support 16 has a stamping and forming anti-off structure; the key cap 1 is provided with a key limiting boss 30 on the outer side of the key limiting boss 30. A key end limiting surface 31 is disposed, and the mutually supported scissor foot support 16 is restrained from the key end limiting surface 31 of the key limiting boss 30 of the key cap 1 by the scissors anti-drop structure, thereby preventing the key from coming off or Limit the keycap 1 to the upper limit.

The scissor retaining structure of the scissor foot support 16 is located on the face of the scissor foot support 16 corresponding to the cantilever end position of the sheet metal resilient arm of the scissor foot support 16.

The scissor retaining structure of the scissor foot support 16 is located at the cantilever end of the sheet metal spring arm of the scissor foot support 16.

Between the left and right end faces of the sheet metal scissor foot support, and near the upper end surface of the sheet metal scissor foot support, there is a scissors upper through hole 34 extending through the sheet metal scissor support plate surface, and the lower end surface of the through hole 34 of the scissors extends upward. The sheet metal elastic arm has a cantilever end located near the upper end surface of the scissor foot support 16.

The independent anti-detachment structure of the scissors is composed of a metal sheet metal elastic arm and a scissor anti-off structure. The metal sheet metal elastic arm of the sheet metal scissor foot has good elasticity and high strength, and can increase the interference of the limit (up to 0.5 mm). ), the key cap and the sheet metal scissors feet are highly reliable in matching. The elastic limit structure on the keycap 1 is eliminated, so that the keycap 1 becomes a maintenance-free fully rigid structure, which greatly reduces the defective ratio of the keycap 1 and completely solves the problem of the key drop of the existing notebook keyboard. problem. The elastic limit structure of the sheet metal scissors foot has no injection defects, and the elastic limit structure of the sheet metal scissors foot does not have the hidden trouble of failure and deformation failure.

The upper engaging portion of the scissor foot support 16 is composed of a scissor upper support portion, a scissor upper end lower plate surface 36 of the scissor foot support 16, and a scissor retaining structure, wherein the scissor upper support portion cooperates with the key cap support fitting portion of the key cap 1, The lower upper surface 36 of the scissors located at the upper end of the scissor foot support 16 cooperates with the inverted engagement portion on the upper button boss 28 of the keycap 1; The upper surface 36 is formed in a planar shape, and the inverted engaging portion is formed by an inverted engaging arc 28a. The upper supporting portion of the scissors is formed by a flat upper upper plate surface 35 of the scissors foot support 16.

The lower support portion of the scissors is composed of a scissor-fitted arc 39 located at the lower end of the scissor foot support 16 , and the scissor-fitted arc 39 is formed by a circular arc formed by the press scissor foot support 16 on the left and right sides, and the scissor is pressed under the arc. 39 is located on the lower surface of the scissor foot support 16. In this embodiment, the lower end of the scissors is formed on the lower side of the scissor foot support 16 and the lower side of the scissor arc 39 is located on the lower surface of the curved side of the scissor plate 37 and the lower end of the scissors. The face scissors are pressed under the matching arc 39 to cooperate with the support portion of the support plate.

The scissors foot support 16 is rotated or slidably connected to the mating portion of the key cap by the thickness dimension between the upper plate upper surface 35 of the scissors and the lower plate surface 36 of the scissors; the distance between the inverted engaging portion of the support plate 15 and the support portion of the support plate The dimension of the distance between the upper surface 41 of the scissors lower end of the scissor foot support 16 and the lower surface 38 of the lower end of the scissors adopts a transition fit; the distance between the inverted engagement portion of the support plate 15 and the support portion of the support plate ≥ the scissor foot support 16 The distance between the upper end of the scissors on the upper surface 41 and the lower support portion of the scissors.

The upper engaging portion of the scissor foot support 16 is composed of a scissor upper support portion, a scissor upper end lower plate surface 36 of the scissor foot support 16, and a separately disposed scissor anti-detachment structure. The upper end lower surface 36 of the scissor is planar, and the inverted engaging portion is The inverted buckle is formed by the arc 28a, and the upper support portion of the scissors is constituted by the upper plate surface of the scissor foot support 16. The fitting portion of the support plate 15 of the present embodiment is composed of a support portion and an inverted engagement portion on the support plate 42 of the support plate.

Referring to FIG. 6, the boss of the concave bottom surface 27 of the key cap is provided with a key fitting shoulder 29, a key matching shoulder 29 provided independently, a key reversed boss 28 of the independently provided key cap, and a separately provided key end. The portion limiting surface 31 constitutes a mating portion of the keycap. A key mounting guide surface 30a is disposed on the inner side of the key limiting boss 30, and a key end limiting surface 31 is disposed outside the key limiting boss 30 between the two mating portions in the width direction of the keycap 1. The bottom surface of the concave bottom surface of the key cap is respectively provided with a left and right rigid key limiting boss 30, and the key cap anti-drop structure is formed by the key end limiting surface 31 of the key limiting boss 30, and the key limit is The inner side of the boss 30 has a key limiting boss guiding surface 30, and the outer side of the key limiting boss 30 is provided with a key end limiting surface 31. The engaging portion of the key cap is composed of a key engaging shoulder 29 and a key reversed boss 28 The key anti-drop structure comprises a reverse-locking surface of the key-backing boss 28, and a reverse-locking front inclined surface, the key limiting boss 30 is higher than the key-returning boss 28, and the reverse-fitting portion is located at the key The lower surface of the inverted buckle boss 28, the lower surface of the key upside down boss 28 and the corner portion of the reverse buckle front bevel are an inverted engagement portion (the corner portion is the best curved surface), and the key inverted boss 28 is The cantilever end side may also have no reverse buckle front bevel, and the inverted engagement portion is located at a corner portion (not shown) of the cantilever end of the lower surface of the key inverted boss 28, and the corner portion is formed by a curved surface ( Not shown) is preferably, but before molding undercut bevel best. The inverted buckle fitting portion is constituted by the inverted engagement arc 28a.

Referring to Fig. 7, the mating portion of the support plate 15 is composed of a support portion of the support plate and an inverted engaging portion on the cantilever plate 42 of the support plate. The support plate 15 is made of an aluminum alloy of about 0.5 mm thick, and the support plate 15 has four independent parts. 90 degrees in the Y direction The support plates bent to the left and right sides are matched with the Y-bend flange 40, and the four support plates and the Y-bend flange 40 have inwardly extending support plate cantilever plates 42, and the support plates are matched with the Y-bend flange 40 support plates. The lower surface near the cantilever end of the cantilever plate 42 is provided with an inverted engagement portion and a reverse buckle front surface.

In the lower part of the scissor foot support 16, there is a lower end of the scissor edge 37 which is formed by bending the scissor foot surface in the X direction, and the scissoring under the arc 39 is located at the bending arc of the scissor blade surface and the lower end of the scissor edge 37 of the scissors. The plate surface, the circular arc-shaped scissors press-fitted arc 39 cooperates with the support plate support portion, and the support plate support portion is constituted by the upper plane of the support plate 15 or by the upper plane of the boss formed on the support plate 15 or by a switch The upper surface of the circuit 12 is constructed (this figure is used in conjunction with the upper surface of the switch circuit 12).

Referring to Fig. 8, the support plate 15 is made of 0.1 mm---0.2 mm thick steel plate, and the support plate 15 has four independent support plates which are bent inward in the X direction and fit inward with the X-folded edge 43, in four branches. The plate fits the X-bend side 43 and has an inwardly extending support plate cantilever plate 42. The cantilever end side of the support plate cantilever plate 42 has an upwardly (Y-direction) bent reverse front bevel, the support plate cantilever plate 42 and the reverse buckle The lower plate surface at the bend of the front bevel is an inverted engagement portion, and the front bevel end of the support cantilever plate 42 is also not reversed, and the undercut portion is located on the lower plate surface of the support plate 42 The corner portion of the end (not shown) is preferably formed by stamping a curved surface (not shown), but is preferably formed by forming a front bevel.

Referring to FIG. 6 - FIG. 9 , the mutually supported scissor foot support 16 is restrained by the scissors end limit stop 33 and the key end limit surface 31 provided on the outer side of the key limit boss 30 of the key cap 1 to prevent The keycap is disengaged and the keycap 1 is limited to the upper limit.

The key flip-flops 42 on the support plate 15 or the key-back bosses 28 on the keycap 1 have an inverted engaging portion, a reverse front bevel, and the upper end 41 of the scissors foot support 16 or the scissor support The upper end lower surface 36 of the scissors 16 is engaged with the inverted buckle engaging portion; the reverse buckle engaging portion is connected with the reverse buckle front inclined surface, and the reverse buckle front inclined surface is located inside the inverted buckle fitting portion; the reverse buckle front inclined surface on the key inverted buckle 28 The reverse buckle front slope which is inclined downward or on the bent side of the support plate 15 is inclined upward. The engaging portion of the key cap is arranged in the width direction of the key by the key inverted boss 28 and the key engaging shoulder 29, that is, the key inverted boss 28 is located beside the key engaging shoulder 29.

The key inverted boss 28 and the key engaging shoulder 29 are arranged along the width direction of the key, and the thickness of the scissors foot support 16 between the upper plate upper surface 35 of the scissors and the lower upper surface 36 of the scissors is respectively inverted with the key of the key cap. The table 28 and the key matching shoulder 29 are matched; the size of the lower surface of the key upside down boss 28 to the concave bottom surface 27 of the key cap can be made large, and the key cap can be produced by pulling the core inward along the length direction of the key. Conducive to the use of extremely thin steel scissor foot support (such as the thickness of 0.08mm scissors foot support), completely solved the use of ultra-thin scissors feet support, the key cap's mating part due to the key flip-fit surface 3c and keys The spacing between the mating planes 3b is too small to be able to be produced by injection molding.

The upper and lower flat plates of the scissor foot support 16 are respectively matched with the key cap 1 and the support plate 15, which completely simplifies the matching portion of the scissor foot support 16 so that the support of the scissors feet with an ultra-thin thickness can be used to double the material cost of the scissor foot support. Aluminum The thickness of the gold scissor foot support is reduced from the current 0.4mm to 0.15mm; the thickness of the steel scissor foot support is reduced from the current 0.4mm to 0.08mm. The use of ultra-thin scissors feet supports double the thickness of the scissor foot support, further reducing the height of the keys.

Referring to FIG. 7 - FIG. 8, the mating portion of the support plate 15 is composed of a support portion of the support plate and an inverted engaging portion on the cantilever plate 42 of the support plate, and the inverted engaging portion is formed by the inverted engaging arc 28a. 28a is a portion of the lower surface of the cantilever plate 42. When the arc length of the inverted engagement arc 28a is infinitely close to zero, the inverted engagement arc 28a is a straight line of the cantilever end of the cantilever plate 42.

In this embodiment, the plate surface on the cantilever end side of the cantilever plate 42 is bent upward, and a radius R surface is formed on the lower plate surface of the cantilever plate 42 of the support plate, and the inverted engagement arc 28a is composed of the R arc surface. .

The lower support portion of the scissors is composed of a scissor-fitted arc 39 located at the lower end of the scissor foot support 16, and the scissor-pressed lower arc 39 is formed by the punched scissor foot support 16 on the left and right sides of the plate-formed scissors. The arc is formed, and the scissor-fitted arc 39 is located on the lower plate surface of the scissor foot support 16.

The upper fitting portion of the scissor foot support 16 is composed of a scissor upper upper plate surface 35, a scissor upper end lower plate surface 36, and a scissors retaining structure. The scissor anti-drop structure of the embodiment is composed of a separately arranged scissors bending limit stop 33. There is a scissors upper through hole 34 extending between the left and right end faces of the scissor foot support 16 through the scissor foot support 16 plate surface. The lower end surface of the through hole 34 of the scissors has a middle elastic arm 32 (the sheet metal elastic arm is formed by the middle armor elastic arm 32), and a scissors bending limit position is provided at the cantilever end of the sheet metal elastic arm 32. The scissors retaining structure of the present embodiment is constituted by a bending limit stop 33 located near the middle portion between the two upper fitting portions of the scissor foot support 16, and the middle gilt elastic arm 32 is supported by the scissor foot 16 near the middle of the upper end. The elastic cantilever formed by the upward extension of the bottom of the through hole is formed.

The middle metal elastic arm 32 may also be formed by extending to the left or right to the left of the through hole 34 of the scissors (not shown), and the scissors bending limit position 33 is located on the elastic arm of the middle elastic arm 32. The middle elastic arm 32 can also be extended from the left portion or the right portion of the through hole 34 of the scissors to the right portion and connected or extended to the left portion and connected to form (not shown), the scissors bending limit position 33 is located on the resilient arm of the middle armor spring resilient arm 32.

Referring to FIG. 6 - FIG. 11 , the scissor foot support 16 is rotated or slidably connected to the upper surface of the upper surface of the scissor 36 and the upper surface 36 of the scissor and the key cap; the mating portion of the key cap supports the mating portion and the key by the key cap. The inverted buckle boss 28 and the separately provided key limit boss 30 are formed; the scissors foot support 16 is formed by sheet metal stamping.

The keycap 1 has a keycap support mating portion that cooperates with the scissor foot support 16. The mating portion of the keycap 1 is supported by the keycap, the inverted engagement arc 28a on the keycap 1, and the independently disposed key limiting boss 30. The support plate 15 has a support portion supporting the scissor support 16 , and the engaging portion of the support plate 15 is formed by the support portion of the support plate and the inverted engagement arc 28 a on the bending plate of the support plate 15; 16 is a flat-shaped scissors lower end upper surface 41 and the support plate 15 is curved The buckle matching arc 28a is matched, and the lower support portion of the scissors is the lower end surface 38 of the scissors lower support 36; the scissor foot support 16 is a flat-shaped scissors upper end lower surface 36 and the curved cap of the key cap 1 With the matching arc 28a, the upper support portion of the scissors is the upper plate upper surface 35 of the scissors; the upper upper plate surface 35 of the scissors and the lower plate surface 38 of the lower end of the scissors are respectively engaged with the key cap support fitting portion and the support portion of the support plate.

The keycap support fitting portion may be constituted by a key fitting shoulder 29 (used in the present embodiment); may be constituted by a concave bottom surface 27 of the key cap; and may be an upper plane or a boss of the boss formed on the concave bottom surface 27 of the key cap The curved surface on the upper plane is formed; it can be formed by a curved surface formed by the concave bottom surface 27 of the keycap.

The scissor upper support portion may be an arc surface of the upper portion of the scissor foot support 16 (not shown); it may be a flat upper shear upper plate surface 35; and may be a circular arc-shaped upper end upper surface of the scissor 35, The circular arc surface is formed by forming a curved plate surface or punching a plate surface.

The support supporting portion of the support plate may be the upper surface of the support plate 15; the upper surface of the boss formed on the support plate 15; the arc surface formed on the support plate 15; the upper surface of the switch circuit 12 may be matched It may be a mating shoulder on the support plate 15 (similar to the shoulder structure of the keycap); it may also be an upward section of the punched surface on the bent side of the support plate 15.

The lower support portion of the scissors is composed of a scissor-fitted arc 39 located at the lower end of the scissor foot support 16 , and the scissor-fitted arc 39 is formed by a circular arc formed by the press scissor foot support 16 on the left and right sides, and the scissor is pressed under the arc. 39 is located on the lower plate surface of the scissor foot support 16 (used in this embodiment); the lower support portion of the scissors may also be formed by a corner portion formed by the lower end surface 38 of the scissors and the lower end portion of the scissor foot support 16, or the corner portion may be punched down Arc.

The lower support portion of the scissors is formed by the lower lower plate surface 38 of the scissors, and the lower lower plate surface 38 of the scissors is a scissor-fitted arc 39. The support portion of the support plate is formed by a planar plate surface or switch circuit 12 on the support plate 15. The upper surface is composed.

The lower support portion of the scissors is formed by the lower lower surface 38 of the scissors, and when the lower lower surface 38 of the scissors is a curved curved surface, the support supporting portion of the support is constituted by a punched curved surface on the support plate 15.

When the lower support portion of the scissors is constituted by the corner portion of the lower end plate surface 38 of the scissors, the support portion of the support plate is constituted by a flat plate surface of the support plate 15 or the upper surface of the switch circuit 12.

Example 2

Referring to FIG. 12, two key T-shaped bosses 42 which are vertically symmetrical and erected T-shaped are formed near the middle of the concave bottom surface of the keycap 1. The two cantilever ends of the key T-shaped boss 42 are key inverted convex The table 28 is formed with an inverted engaging portion on the lower surface of the key upside down boss 28, and a key plane limiting boss 43 is formed on the inner side of the two key T-shaped bosses 42 to limit the convexity on the two key planes. The table 43 is formed with two key arc engaging faces 44 formed by concave curved faces, and a key upper limit face 45 is formed near the middle of the two key arc engaging faces 44.

The key plane limiting bosses 43 on the left and right sides of the two key arc engaging faces 44 of the present embodiment are equal to the upper limit limit surface 45 of the inner side of the two key arc engaging faces 44 (ie, after installation) After the key cap, the key plane limiting bosses 43 (key limiting bosses 30) on the left and right sides of the two key arc engaging faces 44 function to limit the release of the keycaps).

The two-part key arc matching surface 44 may be the same center, and the two-part key arc matching surface 44 may also be different centers. When the two-part key arc matching surface 44 has different centers, the two-part key arc matching surface 44 may also be a plane, and the scissors foot support 16 and The key cap is a displacement fit, and the two-part key arc engaging surface 44 acts to restrict the mating portion of the scissor foot support 16 from moving along the concave bottom surface of the key. The two-arc arc-engaging surface 44 of the circular arc of the embodiment is concentric, and the two-segment key arc-matching surface 44 is smoothly connected into a complete circle.

It should be ensured that the inverted engaging arch 28a constituting the inverted engaging portion is located near the center of the key arc engaging surface 44, and is theoretically located at the center of the circle.

The keycap support engagement portion is constituted by the key arc engagement surface 44; it may also be constituted by the keycap inner concave bottom surface 27.

Referring to Fig. 13 - Fig. 17, the scissor foot support 16 is in an upright eight-type installation, and the lower fitting portion of the scissor foot support 16 is formed by a press-fitted arc 39, a flat-shaped scissors lower end upper plate surface 41, and is formed at the scissor foot. The left and right sides of the support 16 are provided with elastic left and right sheet metal elastic cantilevers 46 (the sheet metal elastic arms are formed by the sheet metal elastic cantilever 46), and the left and right sheet metal elastic cantilevers 46 extend upward from the plate surface of the scissor foot support 16 . The left and right sheet metal elastic cantilever 46 is a flat plate shape (optimally a flat plate surface), and the upper upper plate surface 36 of the scissors is located on the surface of the left and right sheet metal elastic cantilever 46, and the sheet metal elastic arm is composed of left and right sheet metal elastic cantilevers 46. .

The mating portion of the scissor foot support 16 is composed of a scissor upper end bending arc 45 (scissors upper support portion), a scissor foot support 16 upper upper scissors surface 36, and a scissor upper end bending arc 45 (scissors anti-off structure); The upper support portion of the scissors and the anti-detachment structure of the scissors are all located on the upper end bending arc 45 of the scissors; the lower upper surface 36 of the upper end of the upper and lower sheet metal elastic cantilever 46 and the key upside down boss 28 of the keycap 1 The inverted buckle fitting portion cooperates, and the upper end bending arc 45 of the scissors cooperates with the key arc engaging surface 44.

When the keycap 1 is installed, the key upside down boss 28 elastically deforms the left and right sheet metal elastic cantilever arms 46, and the upper end bending arc 45 of the scissors enters the mating space formed by the key arc engaging surface 44.

The rest is the same as in the first embodiment.

Embodiment 3, referring to FIG. 18 - FIG. 20, the scissor foot support 16 is installed in an inverted eight shape, and the lower fitting portion of the scissor foot support 16 is supported by the lower end of the scissors arc 49 (the lower support portion of the scissors) and the scissors support 16 The upper end upper plate surface 41 is formed; the scissors lower support portion and the scissors anti-drop structure of the scissor foot support 16 are all located on the lower end support arch 49 of the scissors; the lower end upper plate surface 41 and the support plate of the scissors on the lower surface of the scissor foot support 16 The inverted buckle fitting portion 28 of the upper buckle fitting portion of the 15 is fitted.

The support plate 15 has a punching boss for restricting the horizontal movement of the lower end support arch 49 of the scissors, and is punched on the support plate 15 The press-formed stamping boss forms a lower concave surface 48 of the support. The lower end support arch 49 of the scissors is rotatably fitted or slightly displaced with the lower concave surface 48 of the support plate 15, and the lower end support arch 49 of the scissors and the lower plate upper surface 41 of the scissors are arranged in a direction perpendicular to the paper surface.

The bent-formed support plate inverted buckle side 50 has an upright T-shape, and an under-locking portion is provided on the lower surface of the cantilever end tail portion which is symmetric about the support plate inverted buckle side 50. A symmetrically convex upwardly convex symmetrical boss is formed on the outer side of the two support plate undercuts, and a circular concave lower plate concave surface 48 is formed on the boss, and the scissors foot supports the 16 scissors. The lower end support arch 49 is in rotational fit or small displacement fit with the lower concave surface 48 of the support plate 15 , and the inverted engagement portion on the support reverse bend side 50 is located near the center of the circular concave surface 48 of the circular support plate. On the curved surface, the lower end upper surface 41 of the scissors foot support 16 is located near the center of the concave lower surface 48 of the circular support plate (theoretically located at the center of the circle is optimal).

The support plate lower concave surface 48 is stamped and formed on the plate stamping and drawing boss 51. The lower scissors support portion and the scissors anti-drop structure are respectively formed by the lower end support arc 49 of the scissors, and the support supporting portion is supported by the lower concave surface of the support plate 48. Composition.

The rest is the same as in Embodiment 2.

Example 4

Referring to FIG. 21 to FIG. 27, the engaging portion of the supporting plate 15 is composed of a supporting portion of the supporting plate, an inverted engaging portion on the cantilever plate 42 of the supporting plate, and at least one limiting portion of the opening of the supporting plate, and the limiting portion of the opening of the supporting plate is disposed at the branch An opening of the matching space between the plate cantilever plate 42 and the supporting plate 15 is provided with a supporting plate opening limiting arc surface on the supporting opening portion of the supporting plate; the lower plate upper surface 41 of the scissors cooperates with the inverted engaging portion of the supporting plate 15 The scissors limit matching portion of the scissor foot support 16 cooperates with the support plate opening limit arc surface on the support opening limit portion, and the support plate support portion and the scissors lower support portion support cooperate; the support plate opening limit arc surface is supported by the branch The plate opening I limit arc 55 and the plate opening II limit arc 54 are formed, and the scissors limit matching portion is composed of a scissors I limiting surface 56 and a scissors II limiting surface 57, wherein the supporting plate opening I limits the arc 55 and The scissors I limit surface 56 is limitedly matched, and the support opening II limit arc 54 is matched with the scissors II limit surface 57; the center of the support plate opening I limit arc 55 is located at the mating portion of the adjacent support plate 15 nearby.

The distance L between the support opening limit portion and the cantilever end of the support cantilever plate 42 is ≥ the plate thickness B of the scissor support 16.

The center of the support opening I of the support plate opening I 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 formed by the upper surface of the support plate 15 or the upper surface of the switch circuit, or the support portion of the support plate may be formed by the upper surface of the boss formed by the upper plate surface of the support plate 15 , which is the embodiment of the present invention. The support portion of the support plate is used as the upper plate surface of the support plate 15.

Referring to FIG. 21, the opening limit portion of the support plate is formed by a support opening limit arc bending plate 52 and a support opening bending plate 53. The support opening limit arc bending plate 52 can be bent in the Y direction. It can be bent in the X direction, and the plate opening and bending plate 53 can be bent in the Y direction or in the X direction.

In this embodiment, the two support plate opening limit arc bending plates 52 are bent leftward and rightward at 90 degrees in the Y direction, and the two support plate opening installation bending plates 53 are bent in the X direction, and the support plates are matched with X folds. The flange 43 is bent inward in the X direction.

Referring to FIG. 22 to FIG. 27, the lower fitting portion of the scissor foot support 16 is composed of a flat upper scissors upper plate surface 41, a scissors limit fitting portion, and a lower scissors supporting portion, wherein the lower plate upper plate is in the form of a flat plate. The surface 41 cooperates with the inverted engagement portion of the support plate 15, and the scissors limit matching portion of the scissors foot support 16 cooperates with the support plate opening limit arc surface on the support opening limit portion, the support plate support portion and the lower scissors support portion Support coordination.

In this embodiment, the support portion of the support plate is formed by the upper plate surface of the support plate 15, and the lower support portion of the scissors is formed by the scissor-fitted arc 39, and the inverted engagement portion is formed by the inverted engagement arc 28a, and the support opening portion of the support plate is composed of The plate opening limit is formed by a curved surface.

There is a scissors limit through hole on the left or right side of the lower end of the scissor foot support 16 , and the scissors I limiting surface 56 and the scissors II limiting surface 57 can be located on the upper and lower end faces of the limiting through hole of the scissors limiting through hole, or 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 scissors I limiting surface 56 and the scissors II limiting surface 57 are respectively located at the upper end surface of the limiting through hole and the lower end surface of the limiting through hole. .

A support plate opening I limit arc 55 and a support plate opening limit arc 54 are arranged on one of the support opening limits of the support plate, so that the support plate opening I limit arc 55 and the scissors I limit surface 56 are matched and supported. The plate opening II limit arc 54 is engaged with the scissors II limiting surface 57, and ensures that the center of the plate opening I limit arc 55 is located near the contact point of the lower scissors support portion and the support portion of the support plate. The supporting pair of scissor foot supports 16 limits the displacement of the scissor foot support 16 in the horizontal direction when the angle a decreases, thereby ensuring that the key cap moves up and down in parallel, and the support plate opening I is limited to the arc 55 and the plate opening II The limit arc 54 makes the face matching scheme more perfect.

The rest is the same as in the first embodiment.

Example 5

Referring to FIG. 28 - FIG. 43 , the engaging portion of the key cap 1 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 59 and an II key assembly 63. The key assembly 59 is connected to the II key assembly 63. The I key assembly 59 is located above the II key assembly 63. The II key assembly 63 is formed by sheet metal stamping. The II key assembly 63 is stamped and formed with an I-folded edge 60 and a II bent edge 62. Wherein, the I-bend edge 60 is connected to the upper plane of the II key assembly 63 at an angle, and the II-bend edge 62 is connected to the I-folded edge 60 at an angle; the inverted-fitting portion is located at the II-bend edge. Near the inner end of the 62, the inverted snap fit portion is formed by stamping.

Referring to Figure 29, II key assembly 63 stamped and formed I-folded edge 60, II bending edge 62 is bent in the y direction to form a y-direction bent portion 61.

The inverted engaging portion is located at an inner end of the II bent edge 62 and extends inwardly of the upper surface of the front side curved edge 65 (in this embodiment); the inverted engaging portion may also be located on the y-direction bent portion 61. The upper corner portion of the inner end portion of the II bent side 62 (the corner portion is preferably chamfered, but is preferably rounded off---not shown in the drawing).

The inner side of the II bent side 62 has a front side curved side 65 which is formed inwardly and bent at a certain angle in the Z direction, and the buckle is reversed. The fitting portion is constituted by an arcuate inverted snap fit arc 28a. The inverted buckle fitting portion is constituted by an arcuate inverted snap fit arc 28a.

Referring to Figures 29-30, 34-37, the keycap support mating portion is formed by a key engaging shoulder 29 that supports the lower plate surface of the cantilever plate 64 by a key on the II key assembly 63. The key limiting structure on the II key assembly 63 is formed by a key bending limit plate 66 connected to the key limiting cantilever plate 67 at an angle, and the key bending limit plate 66 is located at the key limiting cantilever plate 67. The cantilever end, the outer plate surface of the key bending limit plate 66 constitutes a key limit end surface 31.

The key engaging shoulder 29 is formed by a bending key supporting cantilever (used in this embodiment); the key engaging shoulder 29 can also be formed by a press-fit arc formed by a press key supporting cantilever plate 64; the key engaging shoulder 29 can also be supported by a punching key cantilever The lower corner of the cantilever end of the plate 64 (which is preferably chamfered, but preferably rounded off - not shown).

Referring to Fig. 38 - Fig. 43, the I-bend side 60 and the II bent side 62 of the press forming of the key member 63 are bent in the x direction to form the x-direction bent portion 68, and the inner side of the II bent side 62 is directed. The front side curved side 65 formed at a certain angle is bent in the Z direction, and the inverted engaging portion is formed by an arcuate inverted interlocking arc 28a.

Referring to Figures 38-40, the cantilever end of the II-bend side 62 on the x-direction bend 68 is directed toward the middle of the key, and the cantilever end of the II-bend side 62 is directed toward the outside of the middle of the key by punching corners. a chamfering guide portion 69; a scissor upper bending guide portion 70 is press-formed on the left and right sides of the upper end of the scissor foot support 16; when the II key assembly 63 is mounted, the inner surface of the scissor upper bending guide portion 70 of the scissor foot support 16 is The chamfering guide portion 69 is in contact with each other, and the inner surface of the scissor upper bending guide portion 70 is introduced into engagement with the outer end surface of the II bent portion 62. When the mounted II key assembly 63 is moved up and down, the upper scissors guide portion 70 is bent. The inner surface limits the II key assembly 63 from shaking to the left and right.

Referring to Figures 44-46, the I-key assembly 59 is a plastic article produced by injection molding. The keycap support mating portion and the key limit structure are located on the lower surface of the I-key assembly 59. The I-key assembly 59 has a downwardly extending key extension. The key bearing support portion is located on the shoulders on the left and right sides of the keying engagement boss 71. The key cap support portion is formed by the key engaging shoulder 29, and the key limiting structure is supported by the key limiting boss. 30 composition.

The I-key assembly 59 is produced by a blister process, the I-key assembly 59 can also be produced by an injection molding process, and the I-key assembly 59 can also be produced by a stamping process.

The rest is the same as in the first embodiment.

Example 6

Referring to FIG. 12 to FIG. 46, the scissor foot support 16 has a stamping and forming anti-off structure; the key cap 1 is provided with a key end end face 31, and the mutually supported scissor foot support 16 passes through the scissors anti-detachment structure and the key cap 1 The key limit end face 31 is limitedly engaged; the reset body is composed of a magnetic body (not shown), and the key end face 31 of the key cap 1 and the scissor foot support 16 slidably engaged with the key cap 1 A magnetic body is disposed in the vicinity of the scissor retaining structure, and the magnetic force of the magnetic body presses the scissor bending limit stop 33 constituting the scissor anti-off structure on the key limit end surface 31, and the key cap 1 is at the upper limit position.

The keycap 1 is provided with a magnetic body (not shown), and the I key assembly 59 and the II key assembly 63 are connected by a magnetic body.

Magnetic bodies (not shown) are distributed around the four corners of the keycap 1.

The key cap 1 is provided with a magnetic body (not shown), and the magnetic force of the magnetic body presses the scissors bending limit stop 33 constituting the scissors anti-detachment structure on the key limit end surface 31, and the key cap 1 is at this time Upper limit.

The magnetic body (not shown) is fixedly connected to the scissors bending limit stop 33, and a magnetic conductive material or a magnetic body or a scissors bending limit position 33 is disposed on the key limiting end surface 31, and a magnetic conductive material is used. A magnetic body is disposed on the limit end surface 31.

The rest is the same as in the first embodiment.

Example 7

Referring to FIG. 47---52, the key switch device of the combination keycap with the scissors limit mating surface of the present invention comprises a key cap, a reset body, a switch circuit, a support plate with a matching portion, and an upper and lower mating portion. The scissor foot support, the scissor foot support is rotated or slidably connected to the mating portions of the key cap and the support plate through the upper and lower fitting portions respectively, and the scissor foot support constitutes a synchronous linkage support structure by mutual force transmission to ensure that the key cap is parallel to the support plate For the lifting movement, the connection of the I key assembly 59 and the II key assembly 63 is through the end of the I key edge flange 74 or the end of the I key edge ring 73, and the II key assembly 63 is pressed against the I key assembly 59. On the bottom surface, the vertical side of the key is stamped and formed around the outer shape of the I-key assembly 59. The vertical side of the key is at an angle of about 90 with the surface of the I-key assembly 59. The key is formed by pressing the ring inwardly on the vertical side of the key to form an I-key edge ring. 73, or punching the flange inwardly at the upside of the key to form an I-key edge flange 74.

Referring to FIG. 50 and FIG. 52, an II key assembly 63 is mated with the existing plastic scissor foot support 16. The mating portion of the II key assembly 63 is composed of a first bent portion 77, a second bent portion 78, and a third fold. The curved portion 79 is configured, wherein the first bent portion 77 is located between the two second bent portions 78, and the first bent portion 77 and the second bent portion 78 are formed by the press-formed folding arc plate 76 and the guide panel. 75, the folding arc plate 76 of the first bent portion 77 and the folding arc plate 76 of the second bent portion 78 correspond to each other and the corresponding folding arc plate 76 and the plastic scissor foot support 16 are viewed from the side view. The upper engaging portion cooperates, and the guide panel 75 of the first bent portion 77 is folded to match the arc plate 76 and the guide panel 75 of the second bent portion 78 corresponds to the inverted eight shape.

The third bending portion 79 is composed of a flat guiding plate 80 formed by a flat bending edge, an upright bending edge, and a cantilever end of the flat folding side, and is formed by a flat folding edge, a vertical bending edge, and a flat lying. The guide plate 80 constitutes a sliding engagement portion of the keycap.

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 of the combined keycap with the scissors limit matching surface of the invention comprises a key cap, a reset body, a switch circuit, a support plate with a matching portion, a scissor foot support with an upper and lower matching portion, and a scissor foot support through the upper and lower sides The mating portions are respectively rotated or slidably connected with the mating portions of the key cap and the support plate, and the scissor foot supports constitute a synchronous linkage support structure by the mutual force transmission to ensure that the key cap moves up and down parallel to the support plate, and the feature is:

The mating portion of the keycap 1 is composed of a keycap supporting portion, an inverted engaging portion, and a key limiting structure; the keycap 1 is composed of an I key assembly 59 and an II key assembly 63, and the I key assembly 59 and the II key The component 63 is fixedly connected, and the I key component 59 is located on the II key component 63. The II key component 63 is formed by sheet metal stamping, and the II key component 63 is stamped and formed with an I-folded edge 60 and a II bent edge 62. The I-bend edge 60 is connected to the upper plate surface of the II key assembly 63 at a certain angle, and the II bent edge 62 is connected with the I-folded edge 60 at an angle; the inverted-locking portion is located at the II-folded edge. Near the inner end of 62.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1, wherein said key limit structure of said keycap 1 is independently provided by a key limit end face 31 Composition.
A key switch device for a combination keycap with a scissors limit mating surface according to claim 1, wherein the I-bend side 60 and the II bent side 62 of the II key assembly 63 are all along the x direction. The bend constitutes an x-direction bent portion 68, and the cantilever end of the II-bend side 62 on the x-direction bent portion 68 is directed toward the inside of the key, and the under-locking portion is located near the cantilever end of the II-bend side 62.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1, wherein the I-bend side 60 and the II bent side 62 of the II key unit 63 are all in the y direction. The bending constitutes a y-direction bent portion 61 which is located inside the II bent portion 62.
A key switch device for a combined keycap having a scissors limit mating surface according to claim 3 or 4, wherein the inner side of the II bent side 62 is formed by bending a certain angle in the Z direction. The kneading bent edge 65 is formed by an arcuate inverted snap fit arc 28a.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 3 or 4, wherein the reverse snap fit portion is formed by an arcuate inverted snap fit arc 28a.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 3 or 4, wherein the inverted engaging portion is located at an upper corner portion of the inner end portion of the II bent side 62.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 3, wherein the cantilever end of the II bent edge 62 is directed to the outer side of the middle portion of the key through the punched corner portion. a chamfered guiding portion 69; the upper and lower sides of the upper end of the scissor foot support are stamped and formed with a scissor upper bending guide portion 70; when the II key assembly 63 is mounted, the scissors upper support of the scissors upper bending guide portion 70 The inner surface is in contact with the chamfering guide portion 69, and the inner surface of the scissor upper bending guide portion 70 is introduced into engagement with the outer end surface of the II bent portion 62. When the mounted II key assembly 63 is moved up and down, the scissors are folded up. The inner surface of the curved guide portion 70 is engaged with the outer side surface of the II bent portion 62 to restrict the left and right key assemblies 63 from shaking left and right.
A key switch device for a combination keycap having a scissors limit mating surface according to any one of claims 1 to 8, wherein said key switch device is provided with a key cap 1, and said key cap 1 is provided with a keycap support The keycap support engagement portion is located on the lower plate surface of the key support cantilever plate 64 of the II key assembly 63.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 9, wherein said key cap support engaging portion is formed by stamping said cantilever-shaped key supporting cantilever plate 64 The engagement arc is formed by the punching engagement arc forming the key engagement shoulder 29.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1 or 2 or 9 or 10, wherein said key switch device is provided with a key cap 1, said key cap 1 being provided The key limiting structure is formed by a key limiting end surface 31 on the key bending limit plate 66 connected to the key limiting cantilever plate 67 and at a certain angle, and the key bending limit is The plate 66 is located at the cantilever end of the key limit cantilever plate 67.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1 or 2, wherein said key cap 1 is composed of an I key assembly 59 and an II key assembly 63, said key cap 1 is provided with a keycap support engaging portion and a key limiting structure, and the keycap support engaging portion and the key limiting structure are located on the I key assembly 59.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 12, wherein said key cap 1 is composed of an I key assembly 59 and an II key assembly 63, said I key assembly 59 The keycap support engagement portion is formed by a keying engagement shoulder 29 by injection molding.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 13, wherein said I key assembly 59 has a downwardly extending key extension matching boss 71, said key cap support The mating portions are located on the shoulders on the left and right sides of the keying engagement boss 71. The keycap support engaging portion is formed by a keying engagement shoulder 29, and the key limiting structure is defined by the key on the key limiting boss 30. The limit end face 31 is formed.
A key switch device with a combination keycap with a scissors limit mating surface according to claim 1 or 2, wherein the key switch device is provided with a scissor foot support, and the scissor foot is supported on a metal plate surface Press forming; the scissor foot support is formed with an elastic sheet metal elastic arm, and the scissor foot supports a stamped and formed scissor prevention structure; and the key cap 1 is provided with a key limiting end surface 31, the mutual The supported scissor foot support is restrained by the scissors retaining structure from the key limit end face 31 of the keycap 1 to prevent the key from coming out or to limit the keycap 1 to the upper limit position.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 15, wherein when the key cap is mounted, the engaging portion of the keycap 1 and the key end surface 31 are forced to 钣The gold elastic cantilever is elastically deformed, and the scissor retaining structure passes over the key end surface 31 into the mating space of the mating portion of the keycap 1. Under the restoring force of the resetting element, the scissor retaining structure is pressed against the keycap 1 The key is limited to the end face 31, at which point the keycap 1 is limited to the upper limit.
A key switch device for a combined keycap having a scissors limit mating surface according to claim 15, wherein said key limiting end surface 31 is independently disposed on the keycap 1, said scissors retaining structure It is composed of a scissors bending limit stop 33 which is independently provided on the scissor foot support.
A key switch device with a combination keycap of a scissors limit mating surface according to claim 1 or 2, wherein the key switch device is provided with a scissor foot support, and the scissor foot supports the upper plate through the upper end of the scissors The thickness dimension between the face 35 and the lower face 36 of the upper end of the scissors is rotationally or slidably coupled to the mating portion of the keycap 1.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 18, wherein the upper upper plate surface 35 of the scissors and the lower surface 36 of the upper end plate of the scissors are flat plate faces.
A key switch device with a combination keycap of a scissors limit mating surface according to claim 1 or 2, wherein the key switch device is provided with a scissor foot support, and the upper mating portion of the scissor foot support is The scissor upper support portion, the scissors upper end lower plate surface 36 supported by the scissor foot, and the scissors anti-detachment structure, wherein the scissor upper support portion cooperates with the key cap support fitting portion of the keycap 1, and the upper end of the scissors located at the upper end of the scissor foot support The lower plate surface 36 engages with the inverted engagement portion on the upper keyed boss 28 of the keycap 1.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1 or 2, wherein the key switch device is provided with a scissor foot support, and the scissor foot support is further provided with scissors The support portion, the lower support portion of the scissors is formed by a scissor-fitted arc 39 located at a lower end of the scissor foot support, and the scissor-fitted arc 39 is formed by a circular arc formed by the press scissor foot supporting the plate faces on the left and right sides, and the scissors are stamped. The lower mating arc 39 is located on the lower deck of the scissor foot support.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1 or 2, wherein the key switch device is provided with a scissor foot support, and the scissor foot support is provided with a scissor foot Supporting upper matching portion, the upper engaging portion supported by the scissor foot is composed of a scissor upper supporting portion, a scissor upper end lower plate surface 36 supported by the scissor foot, and a scissor retaining structure, and the upper end lower plate surface 36 of the scissor is planar, The inverted engaging portion is constituted by an inverted engaging arc 28a, and the upper supporting portion of the scissors is constituted by an upper plate surface supported by the scissor foot.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1, wherein said key cap 1 is provided with a magnetic body, and said I key assembly 59 and II key assembly 63 pass The magnetic bodies are connected together.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 23, wherein said magnetic body is distributed in the vicinity of the four corners of the keycap 1.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1 or 23, wherein the key cap 1 is provided with a magnetic body, and the magnetic force of the magnetic body constitutes a scissors The decoupled scissors bending limit stop 33 is pressed against the key limit end face 31, at which time the key cap 1 is at the upper limit position.
A key switch device for a combined keycap having a scissors limit mating surface according to claim 25, wherein: said magnetic The magnetic body is fixedly connected with the scissors bending limit stop 33, and a magnetic conductive material or a magnetic body or a scissors bending limit position 33 is disposed on the key limiting end surface 31, and a magnetic conductive material is used, and the key end surface 31 is at the key end. Set the magnetic body on it.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1, wherein the connection of the I key assembly 59 and the II key assembly 63 is through the end of the I key edge flange 74. The end of the I or the key edge ring 73, the pressing of the II key assembly 63 will be effected on the bottom surface of the I key assembly 59, which is stamped and formed around the outer shape of the I key assembly 59, the key The upright edge is at an angle of about 90 with the I key assembly 59; the I button edge ring 73 is formed by pressing the ring inwardly on the upright side of the key, or the I key edge is formed by punching the flange inwardly on the upright side of the key Flange 74.
The key switch device of the combined keycap with the scissors limit matching surface of the invention comprises a key cap, a reset body, a switch circuit, a support plate with a matching portion, a scissor foot support with an upper and lower matching portion, and a scissor foot support through the upper and lower sides The mating portions are respectively rotated or slidably connected with the mating portions of the key cap and the support plate, and the scissor foot supports constitute a synchronous linkage support structure by the mutual force transmission to ensure that the key cap moves up and down parallel to the support plate, and the feature is: The scissor foot support is formed with an elastic sheet metal elastic arm, and the scissor foot supports a stamped and formed scissor structure; the key cap 1 is provided with a key limiting end surface 31, and the mutually supported scissor feet The support is restrained from the key end face 31 of the keycap 1 by the scissors retaining structure, preventing the key from coming out or limiting the key cap 1 to the upper limit position; the reset body is composed of a magnetic body, and the key of the key cap 1 A magnetic body is disposed on the end surface 31 or on the scissor retaining structure supported by the scissor foot slidingly engaged with the keycap 1, and the magnetic force of the magnetic body presses the scissors bending limit position 33 constituting the scissor anti-off structure to the key limit End face At 31, the keycap 1 is at the upper limit.
The key switch device of the combined keycap with the scissors limit matching surface of the invention comprises a key cap, a reset body, a switch circuit, a support plate with a matching portion, a scissor foot support with an upper and lower matching portion, and a scissor foot support through the upper and lower sides The mating portions are respectively rotated or slidably connected with the mating portions of the key cap and the support plate, and the scissor foot supports constitute a synchronous linkage support structure by the mutual force transmission to ensure that the key cap moves up and down parallel to the support plate, and the feature is: The connection of the I key assembly 59 and the II key assembly 63 is performed by the end of the I key edge flange 74 or the end of the I key edge ring 73, and the II key assembly 63 is pressed against the bottom surface of the I key assembly 59. The upright side of the key is stamped and formed around the outer shape of the I key assembly 59. The vertical side of the key is at an angle of about 90 with the surface of the I key assembly 59; the I key is formed by pressing the ring inwardly on the vertical side of the key. The edge ring 73, or the inwardly punched flange on the upright side of the key, forms an I key edge flange 74.
A key switch device for a combination keycap having a scissors limit mating surface according to claim 29, wherein the engaging portion of the II key assembly 63 is composed of a first bent portion 77 and a second bent portion 78. The third bent portion 79 is configured, wherein the first bent portion 77 is located between the two second bent portions 78, and the first bent portion 77 and the second bent portion 78 are formed by press forming a folding arc plate. 76. The guiding panel 75 is configured; the folding arc plate 76 of the first bending portion 77 and the folding arc plate 76 of the second bending portion 78 are correspondingly positioned and the corresponding folding arc plate 76 is matched with the supporting of the scissor foot support With the cooperation, the guide panel 75 of the first bent portion 77 is folded into the arc plate 76, and the guide panel 75 of the second bent portion 78 is correspondingly positioned and inverted, and the third bent portion 79 is folded flat. A flat guiding plate 80 formed by extending a cantilever end of a curved side, an upright bending side, and a flat bending side, and a sliding joint portion of the keycap is formed by a flat folding side, an upright bending side, and a flat guiding plate 80. .
A key switch device for a combination keycap having a scissors limit mating surface according to claim 1 or 2, wherein the engaging portion of the support plate 15 is supported by the support plate and located on the support plate 42 of the support plate. The buckle engaging portion and the at least one branch opening limiting portion are configured, the branch opening limiting portion is disposed at an opening of the matching space between the supporting plate cantilever plate 42 and the supporting plate 15, and the branch opening limiting portion is provided with a branch The plate opening limit arc surface; the lower plate upper surface 41 of the scissors cooperates with the inverted engagement portion of the support plate 15, the scissors limit matching portion of the scissors foot support 16 and the support plate opening limit curved surface on the support opening limit portion Cooperating, the support portion of the support plate and the support portion of the scissors support; the limit arc surface of the support plate opening is composed of the support plate opening I limit arc 55 and the support plate opening II limit arc 54, and the scissors limit matching portion is limited by the scissors I The plane surface 56 and the scissors II limiting surface 57 are formed, wherein the support plate opening I limit arc 55 is limitedly matched with the scissors I limiting surface 56, and the support plate opening II limit arc 54 and the scissors II limiting surface 57 are limited. Coordination; the center of the limit opening 55 of the support plate opening I is located at the center of the adjacent support plate 15 .