WO2019052377A1

WO2019052377A1 - Key device having thin-type scissor support

Info

Publication number: WO2019052377A1
Application number: PCT/CN2018/104082
Authority: WO
Inventors: 陈�峰
Original assignee: 陈�峰
Priority date: 2017-09-15
Filing date: 2018-09-05
Publication date: 2019-03-21
Also published as: CN110622270A; CN110622270B

Abstract

A key device having a thin-type scissor support comprises a keycap (1-1), a reset member (6-1, 8-1, 3-10, 13-1), a switch loop (4-1) and a scissor support bar (3-1). The scissor support bar (3-1) is respectively connected to the keycap (1-1) and a support plate (5-1), and forms a synchronous linked support structure by means of a force transmitted therebetween, so as to ensure that the keycap (1-1) ascends and descends in parallel to the support plate (5-1). The reset member (6-1, 8-1, 3-10) is formed by a first reset member (6-1, 8-1) and a second reset member (3-1). A second sliding portion (8-2) of the first reset member (8-1) slides in coordination with a scissor limiting portion. A first protruding sliding portion (8-3) of the first reset member (8-1) slides in coordination with an inclined scissor surface (3-19), and the first protruding sliding portion (8-3) is pressed against the inclined scissor surface (3-19) under the effects of an elastic force. When effected by an external force, the keycap (1-1) of the key device overcomes the elastic force of the first reset member (8-1). When moving from an upper extremum position to a lower extremum position, the elastic force of the first reset member (8-1) is substantially unchanged or gradually reduced. The key device is applied to a computer keyboard, a palm computer, various types of embedded keyboards, and any type of key device for performing typing operations. The key device is simple to process, featuring an extremely thin and flat structure.

Description

Key device supported by thin scissors

Technical field

The present invention relates to a key device that performs a keystroke operation, and more particularly to a key 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 devices.

Background technique

A thin plastic support structure device is commonly used in portable electronic devices such as notebook or palmtop computers. Referring to FIG. 1 - FIG. 5, the key device of the existing keyboard includes a key cap 1-1 and a support plate 5 having a connection portion. -1, two scissor foot supports 1-3 having upper and lower connecting portions, and the scissor foot supports 1-3 are connected to the connecting portion of the key cap 1-1 and the connecting portion of the support plate 5-1 through the upper and lower connecting portions, respectively, and the resetting member It is an elastomer (elastomer is rubber ring 2-1), and there is a switching circuit. (The switch circuit is generally used with a membrane switch circuit 4-1 with a switch contact, wherein when the rubber ring 2-1 is pressed down, the rubber bomb Circle 2-1 triggers the switch contact of the membrane switch circuit 4-1), and the scissors foot supports 1-3 through the upper end of the upper surface of the scissors 3-8 and the upper end of the upper surface of the scissors 3-9 thickness and the key cap 1 respectively -1 on the key on the arc 1-2, under the key under the buckle arc 1-3 connection, from the side view of the v-shaped mounting scissors foot support 1-3 through the end of the end of the end of the interference, mutual force The transfer constitutes a synchronous linkage support structure to ensure that the keycap 1-1 moves up and down parallel to the support plate 5-1.

When the scissor foot support 1-3 is inverted, the V-type is installed, and the scissor foot support 1-3 is provided with an extended I-bend plate 3-4 and an extension II bent plate 3-5, respectively, which are bent upwards. The abutment extension plate 3-7 forms an extended I-bend plate 3-4 and an extension II bent plate 3-5, wherein one of the scissor-leg supports 1-3 end abutment portion (located on the extended I-bend plate 3-4) The lower plate surface) is in contact with the end abutting portions of the other scissor foot supports 1-3 (at the corners of the cantilever ends of the extension II bending plates 3-5) to ensure that the key cap 1-1 is parallel to the support plate 5 -1 lifting movement.

The lower portion of the scissor foot support 1-3 is provided with a shearing abutment extension plate 3-7, and the extension extension Ib bending plate 3-4 and the extension II bending plate 3 are formed by respectively bending and bending the abutment extension plate 3-7. 5. The extension extension I-bend plate 3-4 and the extension II buck plate 3-5 have different bending angles. After the two scissor-leg supports 1-3 are installed, one of the scissor-leg supports 1-3 passes the extension II. The corners of the bending plate 3-5 and the lower plate surface of the extended extending I-bending plate 3-4 of the other scissor foot support 1-3 are mutually supported to form a mutual support structure, and the ends of the scissor feet support 1-3 The abutting portions are respectively formed by a corner portion of the extended II bending plate 3-5 and a lower plate surface extending the I-bending plate 3-4.

Referring to Fig. 3 and Fig. 5, the lower end bending arc 3-6 of the scissors is located at the cantilever end of the elastic sheet metal elastic extension arm, and the lower connecting portion of the scissors foot support 1-3 is supported by the lower scissors support portion and the scissor foot 1-3 The lower end of the scissors is formed on the upper surface 3-7; the lower support portion of the scissors support 1-3 and the anti-detachment structure of the scissors are located on the lower end of the scissors bending arc 3-6; the surface of the lower end of the scissors foot support 1-3 The upper lower plate upper surface 3-7 of the upper scissors is engaged with the upper connecting plate of the support plate 5-1 and the inverted connecting portion 5-4 on the cantilever side 5-3.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 5, the bent and bent side of the support plate 5-2 is an upright T-shape, and the yoke is provided on the inverted side of the support plate 5-2. The support plate formed by the cantilever is inverted with the cantilever edge 5-3, and the lower surface of the cantilevered cantilever edge 5-3 is provided with an inverted connection portion 5-4.

Referring to FIG. 4, a symmetrical upwardly convex support plate supporting boss 5-7 is formed on the outside of the two inverted T-shaped support plate buckle bending edges 5-2, and the support plate is supported on the boss 5-7. Forming a concave support plate to turn the concave surface 5-5 and the support plate sliding the concave surface 5-6, the scissors foot support 1-3 scissors lower end bending arc 3-6 and the support plate 5-1 on the support plate turn down The concave surface 5-5 is rotatably connected, and the lower end of the scissors bends the arc 3-6 and the support plate on the support plate 5-1 slides down the concave surface 5-6 with a small displacement, and the support plate reverses the reverse connection portion on the cantilever side 5-3 5-4 is located on the curved surface near the center of the concave surface 5-5 of the circular support plate.

The outer side of the support plate 5-7 on the left and right sides of the support plate 5-1 has left and right symmetrical outer through holes, and the inside of the support plate 5-7 has a left and right symmetrical inner through hole, and the inside of the inner through hole Near the middle of the edge, there is a support plate folding edge 5-2, and the support plate undercut side 5-2 is T-shaped when viewed from the side, and the lower end faces of the two cantilever ends of the cantilever side 5-3 of the support plate are reversed. There is an inverted buckle connecting portion 5-4; the extended extending I-bending plate 3-4 and the extending II bending plate 3-5 extend into the inner through-hole of the supporting plate 5-1.

When the two scissor feet support 1-3, the support plate is turned down, the concave surface 5-5 and the support plate sliding down the concave surface 5-6 have a center distance of 1.2 mm - 3 mm (1.8 mm in this embodiment), and the scissor foot support 1 When the bending angle of the left and right extension plate faces 19 of -3 is divided into 65 degrees and 26 degrees, when the key cap 1-1 is pressed, the key cap 1-1 is moved from the upper limit position to the lower limit position, the scissors The displacement of the foot supports 1-3 is 0.04 mm - 0.08 mm.

When the keycap 1-1 is pressed, the keycap 1-1 moves downward against the elastic force of the rubber bead 2-1, and the elastic force of the rubber elastic ring 2-1 gradually changes during the downward movement of the keycap 1-1. Small, when the keycap 1-1 approaches the support plate 5-1, the elastic force of the rubber bead 2-1 gradually becomes larger; when the external force is removed, the key cap 1-1 is reset to the upper limit position.

When the keycap 1-1 is pressed, the relationship between the elastic force F of the rubber ring 2-1 and the stroke L of the keycap 1-1 is shown in Fig. 6. The elastic force F of the rubber ring 2-1 and the key cap 1 The relationship diagram of the stroke L of 1 constitutes a good feel of the existing keyboard.

See the application number 2015101866538, the patent I applied for on 2015-04-18---Example 3

Problems with existing programs:

1. Referring to Fig. 2 and Fig. 3, when the key cap 1-1 is in the upper limit position (when the stroke of the key is maximum), the elastic force of the rubber ring 2-1 acts on the key cap 1-1 and is connected with the key cap 1-1. The two scissor feet support 1-3 are subjected to an upward pulling force, and the horizontal force components of the two scissor foot supports 1-3 subjected to the upward pulling force are directed to the outer side of the key device, so that the end portions of the scissor foot supports 1-3 are respectively respectively The displacement from the corner of the extension II bending plate 3-5 to the outer surface of the extended extension I-bend 3-4 is 0.04 mm---0.08 mm, respectively, on the left and right sides of the key After the keys are severely tilted, the end contact portions of the two scissor feet supporting 1-3 begin to contact.

2. Scissor foot support 1-3 scissors lower end bending arc 3-6 and support plate 5-1 on the support plate turned concave surface 5-5 rotation connection, scissors foot support 1-3 scissors lower end bending arc 3- 6 and the support plate on the support plate 5-1 to the concave surface 5-5 manufacturing precision requirements are very high, if the lower end of the scissors bending the arc 3-6 and the support plate to the concave surface 5-5 manufacturing precision will also increase the key tilt .

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a key device having a better parallelism and a relatively thinner contact between the end portions of the scissor foot supports 1-3 during the lifting process.

The technical solution of the present invention is implemented as follows: a key device supported by a thin scissors according to the present invention includes a key cap, a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected with the key cap and the support plate 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, and is characterized in that: one end of the scissor foot support 1-3 is provided with an end abutting portion, a scissor foot A lower scissors connection portion connected to the support plate is disposed between the other end of the support 1-3 and the end abutment portion, and the lower scissors connection portion is closer to the end contact portion; the key cap 1-1 is in the upper limit position and the lower limit position. Moving up and down, the resetting body acting on the scissor foot support 1-3 or the abutting part connecting body connecting the scissor foot supports 1-3 keeps the end abutting portions of the two scissor foot supports 1-3 constantly pressed against each other to form two The transmission of the force between the scissor feet supports 1-3 and constitutes a synchronous linkage support structure to ensure that the key cap moves up and down parallel to the support plate.

The utility model comprises a key cap, a reset body, a switch circuit and a scissor foot support, wherein the scissor foot support is respectively connected with the key cap and the support plate, and the scissor foot support forms a synchronous linkage support structure by mutual force transmission to ensure that the key cap is parallel to The support plate is used for lifting movement, wherein the reset body is composed of a first reset body, and the first reset body is provided with two connecting portions, and one of the connecting portions of the first resetting body is connected with one of the scissor feet 1-3 Connecting, the other connecting portion of the first resetting body is connected to the connecting portion of the other scissor foot support 1-3;

The connecting portion of the first resetting body is composed of a first convex sliding portion and a second sliding portion, and the first convex sliding portion and the second sliding portion form a distance L and are connected together;

The connecting portion of the scissor foot support 1-3 is composed of a scissors limiting portion and a shearing inclined surface 3-19, the scissors limiting portion is parallel with the scissor foot support 1-3, and the scissor inclined surface 3-19 and the scissor foot support 1-3 are clamped. Angle a;

Wherein the second sliding portion is slidably engaged with the scissors limiting portion, the first convex sliding portion is slidably engaged with the shearing surface 3-19, and the first convex sliding portion is pressed against the shearing surface 3-19 under the elastic force;

The key cap of the key device overcomes the elastic force of the first reset body under the action of an external force, and when the upper limit position is moved to the lower limit position, the elastic force of the first reset body is substantially unchanged or the elastic force of the first reset body is gradually decreased.

Further, the reset body is composed of the first reset body, and the force of the first reset body is applied to the two scissor foot supports 1-3, and the force of the first reset body or the force of the first reset body In the x direction and pointing to the inner side of the key device; when the key cap 1-1 moves up and down in the Z direction, under the action of the first resetting body, the end abutting portions of the two scissor foot supports 1-3 are always kept in contact with each other. The transmission of force between the two scissor feet supports 1-3 is formed.

Further, the reset body is composed of the first reset body and the second reset body. When the key cap 1-1 moves downward in the Z direction against the Z-direction upward force generated by the elastic force of the first reset body under the external force, The upward force component of the Z-direction generated by the elastic force of the first reset body decreases as the a-angle and the b-angle decrease; the second reset body starts to generate the Z-direction upward after the key cap is lowered to a certain position. force.

Further, one end of the scissor foot support 1-3 is provided with an end abutting portion, and the other end of the scissor foot support 1-3 is provided with a scissor upper connecting portion that cooperates with the key cap, and the first reset body respectively interferes with the two mutually resisting portions The scissor foot supports 1-3 are connected, and the elastic force of the first reset body acts between the upper connecting portion of the scissors and the end abutting portion.

Further, the end portions of the two scissors feet supporting the pair of scissors feet 1-3 are provided with a scissors anti-detachment portion. When the key cap 1-1 of the key device is in the upper limit position, the external force pulls up the key cap, the scissors The anti-offing portion is matched to prevent the scissor foot support 1-3 from coming off the connection portion of the support plate 5-1 or the scissors anti-off portion is matched with the support plate retaining portion to prevent the scissor foot support 1-3 from the support plate 5 The connection of -1 is released.

Further, the anti-offset portion of the scissors is formed by the scissors extending and preventing the release plate 3-18, and the anti-offset portion of the support plate is prevented from being removed from the end face of the support plate of the support plate 5-1 through the support plate 5-1. -12 is constituted; when the keycap 1-1 is at the upper limit position, the end of the cantilever end of the scissors extension retaining plate 3-18 is located in the support plate preventing hole 3-11.

Further, the scissor foot support 1-3 is provided with an extended I-bend plate 3-4 and an extended II buckling plate 3-5, respectively, respectively, bending and shearing the contra-symmetric extension plate 3-7 to form an extended I-bend plate 3 -4 and extension II bending plate 3-5, wherein one end of the scissor foot support 1-3 is located on the lower plate surface of the extended I-bend plate 3-4, and the other scissor foot supports the end of 1-3 The abutting portion is located near the cantilever end of the extension II bending plate 3-5, wherein the scissors retaining portion of the scissor foot supporting 1-3 is formed by the downward bending of the tail portion of the extended I-bending plate 3-4. The bent plate 3-15 is formed, and the scissor retaining portion of the other scissor foot support 1-3 is located on the extended II bent plate 3-5.

Further, the scissor foot support 1-3 of the key device is provided with a shearing abutment extension plate 3-7, and the end abutting portion is located at a cantilever end of the shearing abutment extension plate 3-7, wherein the two scissor feet support 1- The shearing abutment extension plates 3-7 of 3 are connected by a shearing abutment connector.

Further, the shearing abutment extension plate 3-7 has a flat shape, and the end abutting portion is located at the cantilever end of the shearing abutment extension plate 3-7 or the shearing abutment extension plate 3-7 is bent upward to form an abutting portion extending and bending the bending plate. 3-20, the end abutting portion is located at the cantilever end of the abutting portion extending the curved plate 3-20 or the arcuate surface of the abutting portion extending the curved plate 3-20.

Further, the contact portion connecting body is composed of an elastic body or a flexible body or an annular metal, the elastic body is composed of a sheet-like elastic body, and the flexible body is composed of a sheet-like flexible body.

Further, the connecting portion of the scissor foot support 1-3 is composed of a scissors limiting portion and a shearing inclined surface 3-19, and the scissors limiting portion is parallel to the scissor foot support 1-3.

Further, the first convex sliding portion protrudes outward or inward from the second sliding portion, and the first convex sliding portion is parallel to the second sliding portion.

Further, the scissor foot support 1-3 is formed into a scissors I plane 3-26 and a scissors II plane 3-27, the upper connection portion of the scissors is located in the plane of the scissors I 3-26, and the scissors limit portion is located in the plane of the scissors II 3-27 The second sliding portion is slidably engaged with the planes 3-27 of the scissors II, and the planes 3-26 of the scissors I are located above the planes 3-27 of the scissors II.

Further, the mounting through-holes 3-25 penetrating the plate surface are formed below the x-direction of the scissors upper connecting portion of the scissors foot support 1-3.

Further, the resetting body 3-28 of the scissor foot support 1-3 is formed on the left and right sides in the y direction.

A key device supported by a thin scissors according to claim 2, wherein a through hole penetrating through the plate surface is provided near the middle portion of the support plate and near the middle portion of the switch circuit, and the through hole is provided with a transparent A convex lens 15-1 that is convex upward.

Further, the key cap of the key device overcomes the elastic force of the first reset body under the action of an external force, and moves the first convex sliding portion upward or downward along the shear inclined surface 3-19 when moving from the upper limit position to the lower limit position. And moving inward, the second sliding portion is restricted by the scissors limiting portion and moves up or down along the surface of the scissors foot support 1-3 or the surface parallel to the plate surface of the scissors foot support 1-3 and moves inward The elastic force of the first reset body is substantially unchanged or the elastic force of the first reset body is gradually reduced.

Further, a split limit space is disposed below the scissors limit portion, and the second sliding portion is restricted to move within the complex limit space.

Further, the following: a separation space is arranged between the scissors limiting portion and the scissor foot support 1-3, and the second sliding portion is restricted to move within the complex limiting space.

Further, the shearing bevel 3-19 and the scissor foot support 1-3 form a certain angle a, ensuring that the key cap of the key device overcomes the elastic force of the first reset body under the action of an external force, and moves from the upper limit to the lower limit. When the position is set, the elastic force of the first reset body is substantially unchanged or the elastic force of the first reset body is gradually decreased.

Further, the connecting portion of the scissor foot support 1-3 is composed of two scissors limiting portions and one shearing inclined surface 3-19, and the shearing inclined surface 3-19 is located between the scissors limiting portions.

Further, the first convex sliding portion is located between the two second sliding portions.

Further, the scissor foot supports 1-3 are constituted by scissor foot supports 1-3 whose ends interfere with each other.

Further, the reset body is composed of a first reset body and a second reset body, and the first reset body is parallel to the support plate.

Further, the opening of the complex limiting space of the scissors limiting portion points in the direction of positive x.

Further, the first reset body is composed of a steel wire and an elastic body.

Further, the first reset body is composed of a ring-shaped steel wire.

Further, the first reset body is constituted by a tension spring.

A scissor foot support mounting method for a key device, the scissor foot support mounting method of the key device comprising the following steps:

Separating or simultaneously aligning the lower scissors connecting portions of the two scissor feet 1-3 with the mating space opening of the support plate 5-1 or the position of the mating space opening of the key cap 1-1;

Separating or simultaneously arranging the two scissor foot supports 1-3 within an angle range of θ1 and an angle range of θ2;

Pushing the scissor foot support 1-3 separately or simultaneously, the scissor foot support 1-3 gradually enters the mating space of the support plate 5-1 from the mating space opening of the support plate 5-1, or the scissor foot support 1-3 stepwise from the key The mating space opening of the cap 1-1 enters the mating space of the keycap 1-1, where θ1 = a + Δ degrees, θ2 = b + Δ degrees.

Further, the two scissor foot supports 1-3 are in a standing shape, respectively or at the same time or at the same time, the scissor joints of the two scissor feet supporting 1-3 respectively and the matching space opening of the support plate 5-1 or the key cap 1-1, the matching space opening position is aligned;

Rotating the two scissor foot supports 1-3 separately or simultaneously, so that the two scissor foot supports 1-3 are placed within the θ1 angle range and the θ2 angle range;

Push the scissor foot support 1-3 inward, and the scissor foot support 1-3 gradually enters the mating space of the support plate 5-1 from the mating space opening of the support plate 5-1, or the scissor foot support 1-3 gradually from the support cap 1 The mating space opening of -1 enters the mating space of the keycap 1-1.

Further, when the two scissor foot supports 1-3 are respectively located at the θ1 angle and the θ2 angle, the lower end structures of the two scissor foot supports 1-3 are aligned with the lower surface of the key device, wherein a=b.

Further, when the two scissor foot supports 1-3 are respectively located at the θ1 angle and the θ2 angle, the lower end structures of the two scissor foot supports 1-3 do not exceed the lower plate surface of the support plate 5-1.

Further, the scissor foot support 1-3 has no obstruction to enter the mating space of the support plate 5-1 or the mating space of the key cap 1-1.

A key cap mounting method for a key device includes a key cap, a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected to the key cap and the support plate; and one end of the scissor foot support 1-3 is disposed An end abutting portion, a scissors lower connecting portion is disposed between the other end of the scissor foot support 1-3 and the end abutting portion, and the scissors lower connecting portion is closer to the end abutting portion;

When the key cap 1-1 moves up and down between the upper limit position and the lower limit position, the end contact portions of the two scissor foot supports 1-3 are always kept in contact with each other, forming a force between the two scissor foot supports 1-3. Transfer and constitute a synchronous linkage support structure;

When the key device is in a natural state, the keycap 1-1 is in an upper limit position, and the upper limit angles of the scissor foot supports 1-3 with respect to the support plate 5-1 are respectively an angle and a b angle, in the reset Under the action of the body, the two scissor foot supports 1-3 are limited to the angles θ1 and θ2, where θ1=a+Δ degrees, θ2=b+△ degrees;

The mating space openings of the keycap 1-1 are all directed to the inner side.

A key cap mounting method for a key device,

The keycap mounting method of the key device comprises the following steps:

The keycap 1-1 is inclined at an angle with the support plate 5-1, and the lower surface of the inclined keycap 1-1 at the lower end is brought into contact with the upper end portion of one of the scissor foot supports 1-3, and the key is pulled inward Cap 1-1, the scissors anti-off structure is over the key limit structure, the key of the key cap 1-1 of the end is extended to the mounting hole 3-25 of the scissor foot support 1-3;

The position of the retaining key local extension 1-12 and the mounting through hole 3-25 is unchanged or the position of the retaining key local extension 1-12 and the mounting through hole 3-25 is substantially unchanged, and the other end of the keycap 1-1 is rotated downward so that the other end of the keycap 1-1 is rotated downward The connecting portion of the key cap 1-1 passes over the outer side of the upper end of the other scissor foot support 1-3, and the lower surface of the key cap 1-1 is in contact with the upper end of the scissor foot support 1-3;

Press the keycap 1-1 down or pull the keycap 1-1 down and right, and the combination of the left side scissors anti-off structure over the left key limit structure, the key cap is installed.

The positive effects of the present invention are:

The positive effects of the ultra-thin key device with end support are:

1. The resetting body acting on the scissor foot support 1-3 or the connecting part connecting the scissor foot support 1-3, under the action of the elastic force and the contact part connecting body, the keycap is supported by the scissor foot during the lifting process 1- The end abutting portion of the 3 is always in contact, so that the parallelism of the key cap during the lifting process is better, and the influence of the processing precision of the end abutting portion on the parallelism of the key cap during the lifting process is eliminated;

2. The resetting body acting on the scissor foot support 1-3 or the abutting part connecting body connecting the scissor foot support 1-3, under the action of the elastic force and the contact part connecting body, the two scissor feet support 1-3 and the support plate 5-1 are all sliding connection (two scissors feet support 1-3 can also be connected with the support plate 5-1 by a rotary connection, a sliding connection, but the sliding connection is optimal), the scissors foot support 1-3 The processing accuracy of the connecting portion and the processing accuracy of the connecting portion of the support plate 5-1 have little influence on the parallelism of the key cap;

3. The first reset body adopts a tension spring and a ring-shaped steel wire 8-1 ring-shaped steel wire 8-1 and an annular elastic band 7-1, further realizing the low height of the key device and obtaining a very good hand feeling;

4. By connecting the scissor foot supports 1-3 with the sheet-shaped abutting portion connecting body, the end portion abutting portion structure of the scissor foot supporting members 1-3 is greatly simplified, and the height of the key device is further reduced.

The ultra-thin key device with end support can be widely applied to computer keyboards, palm-sized computers, various embedded keyboards and key devices for performing keystroke operations; the invention provides a simple process, better parallelism and very thin Key device.

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 an exploded perspective view of a conventional key device using a sheet metal end supporting scissors foot;

Figure 2 is a perspective view of a conventional key device using a sheet metal end support scissor foot;

Figure 3 is a cross-sectional view of a conventional key device using a sheet metal end supporting scissors foot;

Figure 4 is a cross-sectional view of a conventional key device using a sheet metal end support scissor foot;

Figure 5 is a cross-sectional view of a conventional key device using a sheet metal end support scissor foot;

Figure 6 is a diagram showing the force and displacement of a conventional key device using a sheet metal end support scissor foot;

Figure 7 is an exploded perspective view of the first reset body of the present invention using a spring-loaded key device;

Figure 8 is a perspective view of the sheet metal end support scissors of the present invention;

Figure 9 is a perspective view of the first reset body of the present invention using a spring-loaded key device;

Figure 10 is a perspective view of the first reset body of the present invention using a spring-loaded key device;

Figure 11 is a front elevational view showing the first reset body of the present invention using a spring-loaded key device;

Figure 12 is a view of the keycap of the present invention in a lateral upper limit position;

Figure 13 is a cross-sectional view taken along the line A-A of the key cap of Figure 11;

Figure 14 is a B-B cross-sectional view of the keycap of Figure 11 in an upper limit position;

Figure 15 is a C-C cross-sectional view of the keycap of Figure 11 in an upper limit position;

Figure 16 is a view of the keycap of the present invention in a side lower limit position;

Figure 17 is a cross-sectional view taken along line A-A of the keycap of Figure 11 in a lower limit position;

Figure 18 is a B-B cross-sectional view of the keycap of Figure 11 in a lower limit position;

Figure 19 is a B-B cross-sectional view of the keycap of Figure 11 in a lower limit position;

Figure 20 is a diagram showing the force and displacement of the first reset body of the present invention using a spring-loaded key device;

Figure 21 is a perspective view of the first reset body of the present invention using a rubber key device;

Figure 22 is a perspective view of the key device of the first reset body of the present invention using a looped wire;

Figure 23 is a perspective view of the key device of the first reset body of the present invention using a ring-shaped wire and having a support plate limiting hole;

Figure 24 is a cross-sectional view of the upper limit position of the key cap of Figure 23;

Figure 25 is a schematic view of the keycap of Figure 24 in a lower limit position;

Figure 26 is a cross-sectional view of the upper limit position of the key cap of Figure 23;

Figure 27 is a schematic view of the keycap of Figure 26 in a lower limit position;

Figure 28 is a schematic view showing the first reset body of the present invention adopting a diagonally mounted compression spring;

Figure 29 is a perspective view of the key device of the first reset body of the present invention using a convex steel wire;

Figure 30 is a side view of Figure 29;

Figure 31 is a perspective view of a key device of the first reset body of the present invention using a magnetic material;

Figure 32 is a perspective view of the keycap of Figure 31 in a lower limit position;

Figure 33 is a side elevational view of another first resetting body of the present invention acting on a sheet metal end support scissor foot joint;

Figure 34 is a schematic view of Figure 33 in the upper limit position;

Figure 35 is a perspective view of the sheet metal end support scissors of the present invention;

Figure 36 is a perspective view of a key device of the present invention employing another shearing abutment connector;

Figure 37 is a perspective view of the key device of the present invention using a shearing abutment connecting body and using a ring-shaped wire for the first resetting body;

Figure 38 is a schematic view of Figure 37 in the lower limit position;

Figure 39 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 40 is a partial enlarged view of Figure 39;

Figure 41 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 42 is a side view of Figure 41;

Figure 43 is a partial enlarged view of Figure 42;

Figure 44 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 45 is a perspective view of a key device of the present invention employing another shearing abutment connector;

Figure 46 is a perspective view of the key device of the present invention using a shearing abutment connecting body and using a ring-shaped wire for the first resetting body;

Figure 47 is a schematic view of Figure 37 in the lower limit position;

Figure 48 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 49 is a partial enlarged view of Figure 39;

Figure 50 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 51 is a side view of Figure 41;

Figure 52 is a partial enlarged view of Figure 42;

Figure 53 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 54 is a partial enlarged view of Figure 39;

Figure 55 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 56 is a side view of Figure 41;

Figure 58 is a partial enlarged view of Figure 42;

Figure 59 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 60 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 61 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 62 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 63 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 64 is a partial enlarged view of Figure 39;

Figure 65 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 66 is a side view of Figure 41;

Figure 67 is a partial enlarged view of Figure 42;

Figure 68 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 69 is a perspective view of a key device of the present invention employing another shearing abutment connector;

Figure 70 is a perspective view of the key device of the present invention using a shearing abutting connector and using a ring-shaped wire for the first resetting body;

Figure 71 is a schematic view of Figure 37 in the lower limit position;

Figure 72 is a perspective view of another key device of the present invention using a shearing abutting connector;

Figure 73 is a partial enlarged view of Figure 39;

Figure 74 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 75 is a side view of Figure 41;

Figure 76 is a partial enlarged view of Figure 42;

Figure 77 is a perspective view of another key device of the present invention using a shearing abutting link;

Figure 78 is a partial enlarged view of Figure 39;

Figure 79 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 80 is a side view of Figure 41;

Figure 81 is a front elevational view of the key device of the present invention employing a shearing abutment connector;

Figure 82 is a perspective view of another key device of the present invention employing a shearing abutting link.

Detailed ways

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 a person of ordinary skill 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. 7 - FIG. 34, a key device supported by a thin scissors according to the present invention includes a key cap, a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected with the key cap and the support plate. 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 lifting movement, and is characterized in that: one end of the scissor foot support 1-3 is provided with an end abutting portion, and the scissor foot support Between the other end of 1-3 and the end abutment portion, a lower scissors connection portion connected to the support plate is disposed, and the lower scissors connection portion is closer to the end contact portion; the key cap 1-1 is between the upper limit position and the lower limit position Moving up and down, the resetting body acting on the scissor foot support 1-3 or the abutting part connecting body connecting the scissor foot supports 1-3 keeps the end abutting portions of the two scissor foot supports 1-3 constantly pressed against each other to form two The transmission of the force between the scissor feet supports 1-3 and constitutes a synchronous linkage support structure to ensure that the key cap moves up and down parallel to the support plate.

The reset body is composed of a first reset body, and the force of the first reset body is applied to the two scissor foot supports 1-3, and the force of the first reset body or the force of the first reset body is in the x direction Pointing to the inner side of the key device; when the key cap 1-1 moves up and down in the Z direction, under the elastic force of the first reset body, the end abutting portions of the two scissor foot supports 1-3 are always pressed against each other by the elastic force, forming The two scissors feet support the transmission of force between 1-3.

The reset body is composed of a first reset body and a second reset body. Under the action of an external force, when the key cap 1-1 moves in the Z direction against the upward component force in the Z direction generated by the first reset body, the first reset body generates The upward component of the Z direction decreases as the a angle and the b angle decrease; after the key cap is lowered to a certain position, the second reset body begins to generate an upward force in the Z direction.

One end of the scissor foot support 1-3 is provided with an end abutting portion, and the other end of the scissor foot support 1-3 is provided with a scissor upper connecting portion that cooperates with the key cap, and the force of the first resetting body is located at the upper connecting portion and the end portion of the scissor Between the abutting portions, the first resetting bodies are respectively connected to the two scissor foot supports 1-3 which are in contact with each other.

The scissor foot support 1-3 is provided with an extended I-bending plate 3-4 and an extended II bending plate 3-5, respectively, respectively, bending and shearing the contra-symmetric extension plate 3-7 to form an extended I-bending plate 3-4 and extending II bending plate 3-5, wherein the end abutting portion of one scissor foot support 1-3 is located on the lower plate surface of the extended I-bend plate 3-4, and the end abutting portion of the other scissor foot support 1-3 is located at the extension Near the cantilever end of the II bending plate 3-5, one of the scissors feet supporting the 1-3 scissors retaining portion is formed by the downward bending of the I-shaped bending plate formed by the downward bending of the extension I-bending plate 3-4 3-15 is configured, and the scissor retaining portion of the other scissor foot support 1-3 is located on the extension II bending plate 3-5.

Two end portions of the two scissor feet supporting the pair of scissor feet 1-3 are provided with a scissor anti-off part, and when the key cap 1-1 of the key device is in the upper limit position, the external force pulls the key cap upward, the scissors are prevented from coming off Positioning prevents the scissor foot support 1-3 from coming off the connection portion of the support plate 5-1 or the scissors retaining portion is engaged with the retaining portion of the support plate to prevent the connection of the scissor foot support 1-3 from the support plate 5-1 The part is out.

Referring to FIG. 7 and FIG. 9, the key device is composed of a key cap 1-1, a reset body, a switch circuit, two scissor foot supports 1-3 having the same structure and dimensions, and a support plate 5-1, wherein the first reset body For the elastic element disposed between the two scissor foot supports 1-3, the elastic element is a tension spring 6-1, the tension spring 6-1 is parallel to the support plate 5-1, and the key cap 1-1 is formed by the key housing 1-4 And the key bracket 1-5 is configured, the lower surface of the key cap 1-1 is fixedly connected with the upper surface of the key bracket 1-5; the key connecting portion is disposed on the key bracket 1-5, and the key shell 1-4 is located at the key bracket 1 - Above the 5, the characters of the key are printed on the upper surface of the key housing 1-4;

The reset body is composed of a first reset body and a second reset body, the first reset body is a tension spring 6-1, and the second reset body is composed of a shear spring piece 3-10;

The switch circuit is composed of a membrane switch circuit 4-1 having a switch contact (used in this embodiment), and the switch circuit can also be other types of detection switches (such as an optical switch, a capacitor switch, etc.) for detecting the pressing of the keycap 1-1;

The connecting portion of the supporting plate 5-1 is composed of four independent bent portions, and the four independent bent portions are respectively composed of the supporting plate with the vertical plate 5-7 and the supporting plate with the horizontal plate 5-8, and four independent bending portions. The bent portions are sequentially arranged in the Y direction, and the connecting portions of the support plate 5-1 are all open outward, and the support plate is equipped with the vertical plates 5-7 to form a central portion of the support plate.

Referring to FIG. 8, the shearing elastic piece 3-10 is arranged along the x direction and symmetrically located on both sides of the scissor foot support 1-3, and the shearing elastic piece 3-10 extends in the Y direction and the Z direction to the upper end of the scissor foot support 1-3, and is cut. The elastic piece 3-10 is at a certain angle with the plane of the scissor foot support 1-3, and the shearing piece switch arcing 3-11 of the circular arc surface is stamped and formed on the cantilever end of the shearing elastic piece 3-10, and the shearing piece switch touches the arc 3 -11 is located on the lower surface of the shearing piece 3-10;

One end of the scissor foot support 1-3 is provided with an end abutting portion, the other end of the scissor foot support 1-3 is provided with a scissor upper connecting portion, the scissor upper connecting portion is separated by a scissors, the upper end of the scissors is 3-9, the scissors The upper upper plate surface 3-8 is constituted; the scissors foot support 1-3 scissors independent structure is provided independently, the scissors anti-drop structure is composed of the scissors limit position 3-3, and the scissors foot support 1-3 is formed with elastic sheet metal. The elastic arm 3-2 is bent at the cantilever end of the sheet metal elastic arm 3-2 to form a scissors limit position 3-3;

The end abutting portion of the scissor foot support 1-3 is composed of a lower plate surface extending the I-bend plate 3-4 and an upper surface of the resisting bending plate 3-14 near the cantilever end of the extended II bending plate 3-5. The extension I bending plate 3-4 and the extension II bending plate 3-5 are all arranged in the y direction, and the I limit bending plate 3-15 formed by the downward bending is formed near the tail portion of the extended I bending plate 3-4. ;

The connecting part under the scissors consists of the cut arc 3-13 and the cut arc 3-16, in which the arc matching 3-13 is cut and the matching arc 3-16 is the same center; the cutting arc is 3-13 - Z direction bending extension plate is formed, shearing the matching arc 3-16 to the -Z direction bending extension plate and then bending the extension plate tail portion in the Z direction; in the middle of the scissors foot support 1-3 in the y direction there is a shear through Holes 3-17, the shear hooks 3-12 are located near the upper portion of the shear through holes 3-17.

The shear hooks 3-12 are located between the end abutting portion and the upper end of the scissor foot support 1-3, and the shear hooks 3-12 are located near the middle between the end abutting portion and the upper end of the scissor foot support 1-3, but It is preferable that the shear hooks 3-12 are located near the upper middle portion between the end abutting portion and the upper end of the scissor foot support 1-3.

Referring to Fig. 9, the structure and size of the two scissor foot supports 1-3 which are mutually incompatible with each other are exactly the same, and the two scissor foot supports 1-3 for ensuring the precision against each other are completed in the same sub-die; the tension spring 6 -1 is respectively connected with the shearing hooks 3-12 of the scissor foot supports 1-3, and the end abutting portions of the two scissor feet supporting 1-3 are all in opposition to each other under the elastic force of the tension spring 6-1, and the two scissor feet The shearing arcs 3-13 of the support 1-3 and the vertical plates 5-7 of the support plates have a small gap of 0.05 mm--0.1 mm, and the support plates are equipped with the vertical plates 5-7 to support the two scissor feet 1-3 Restricted to the vicinity of the middle portion of the support plate 5-1 in the x direction;

The tension spring 6-1 is composed of two tension springs connected together, the two tension springs 6-1 are connected and have a closed frame shape, and the tension spring 6-1 can also be constituted by a tension spring; The scissor hooks 3-12 are connected to one of the scissor feet 1-3, and the other end of the tension spring 6-1 is connected to the scissor hooks 3-12 of the other scissor foot supports 1-3.

Referring to FIG. 7 and FIG. 10, the connecting portion of the key cap 1-1 is located on the bent side of the key bracket 1-5, the key bracket 1-5 is formed by sheet metal stamping, and the connecting portion of the key cap 1-1 is composed of the key bracket 1 -5 lower plate surface, under-key reverse-arcing arc 1-3, key limit structure; button bracket 1-5 is stamped and formed with I-folded edge 1-8, II bent edge 1-9, wherein I-bend edge 1-8 is connected with the upper plate surface of the key bracket 1-5 and forms a certain angle, and the II-bend side 1-9 is connected with the I-bend side 1-8 and forms a certain angle; The arcs 1-3 are located near the inner end of the II-bend side 1-9, and the inner side of the II-bend side 1-9 has a front side-bend side bent at a certain angle in the -Z direction, and the key is undercut. The arc 1-3 is composed of an arc-shaped inverted snap-fit arc; the key limit structure of the key cap 1-1 is composed of independently set key-limiting end faces 1-6, and the key limit end face 1- 6 is located at the cantilever end of the independently extending resilient resilient arms 1-7 with a space above the key resilient arms 1-7 of the cantilever.

Referring to FIG. 12, under the action of an external force, when the keycap 1-1 moves in the Z direction with the upward component force in the Z direction generated by the tension spring 6-1, the Z-direction upward component force generated by the tension spring 6-1 is a. The angle and b angle decrease and decrease; after the shear cap 3-10 is lowered to a certain position, the shearing piece 3-10 begins to generate an upward force in the Z direction.

It is also possible to eliminate the shearing elastic piece 3-10 (second resetting body). The second resetting body is composed of a resilient rubber or elastic member, and the rubber or elastic member can be arranged in the membrane switching circuit 4 corresponding to the four corner positions of the keycap. The upper surface or cloth of -1 is disposed on the upper surface of the membrane switch circuit 4-1 corresponding to the central portion of the keycap (not shown in this scheme).

The second reset body may also be a cantilever spring piece extending downward from the key bracket 1-5. When the key cap 1-1 approaches the lower limit position, the cantilever spring piece extending downward from the key support 1-5 starts with the membrane switch circuit 4-1. Upper surface contact (not shown in this scheme).

The second reset body may also be a cantilever spring piece extending upward from the support plate 5-1. When the key cap 1-1 approaches the lower limit position, the cantilever spring piece extending upward from the support plate 5-1 starts with the key cap 1-1 or the scissors foot Support 1-3 contact (not shown in this scheme).

Referring to Fig. 13 and Fig. 15, the key cap 1-1 is in the upper limit position (the key cap 1-1 is at the highest position), and the scissor foot support 1-3 is passed through the upper upper surface of the scissors 3-8 and the lower upper surface of the scissors 3- 9 thickness dimensions are connected with the under-key 1-3 of the key bracket 1-5, and the arc 1-2 of the key; one of the scissor feet supports the extension of the 1-3 under the I-bend 3-4 The plate surface (end abutting portion) is in interference with the upper surface (end portion abutting portion) of the abutting bending plate 3-14 of the extension II bending plate 3-5 of the other scissor foot support 1-3; It is composed of the I-cut anti-off part and the II limit part. When the key cap of the key device is in the upper limit position, when the external force pulls up the key cap, the I-cut prevention of one of the scissor-leg supports 1-3 on the end contact side The detachment is matched with the limit of the II limit of the other scissor foot support 1-3, and the I-cut anti-detachment part is composed of the I-limit bending plate 3-15, and the I-limit bending plate 3-15 and II limit The position limit fit prevents the scissor foot support 1-3 from coming off the connection portion of the support plate 5-1, and the II limit portion is formed by the upper surface of the extension II bent plate 3-5.

Alternatively, when the bending is formed against the bending plate 3-14, the upper surface II arc formed by the bending bending plate 3-14 and the extended II bending plate 3-5 and the extended I bending plate 3-4 are formed. The surface I arc is the same as the center of the circle, and the lower surface I arc formed by the I-limit bending plate 3-15 and the extended I-bending plate 3-4 when bending and forming the I-limit bending plate 3-15, The end abutting portions are respectively formed by a lower surface I arc and an upper surface II arc.

Referring to FIG. 14, the scissor foot supports 1-3 supported by each other are matched with the limit end faces 1-6 of the key cap 1-1 through the scissors limit position 3-3, and the key cap 1-1 is in the upper limit position. At this time, the cantilever end of the scissors limiter 3-3 enters the space above the key elastic arms 1-7 of the cantilever, reliably preventing the key from coming out or limiting the keycap 1-1 to the upper limit position.

Referring to Figures 16-19, the keycap 1-1 is in the lower limit position (the keycap 1-1 is at the lowest position).

Referring to FIG. 10 - FIG. 19, the connecting portion of the lower scissors portion is slidably engaged with the connecting portion of the supporting plate 5-1, and the force of the tension spring 6-1 is applied to the shearing hooks 3-12 of the two scissor feet supporting 1-3. The force of the tension spring 6-1 or the force component of the tension spring 6-1 is directed in the x direction and directed to the inner side of the key device. Under the elastic force of the tension spring 6-1, the two scissors feet support 1-3 The end abutments remain in contact with each other;

Under the action of external force, when the keycap 1-1 moves downward in the Z direction against the upward component force generated by the tension spring 6-1 in the Z direction, the end abutting portions of the two scissor foot supports 1-3 are always pressed against each other. , the transmission of the force between the two scissor foot supports 1-3 is formed; the component force generated by the tension spring 6-1 in the Z direction decreases as the a angle and the b angle decrease; the Z generated by the tension spring 6-1 The component force in the upward direction is reduced from 62g at the upper limit position to a minimum of about 10g (see Fig. 21), and the relationship between the component force F1 of the tension spring in the Z direction and the displacement amount L of the key cap downward is -a to Section b, point a is when the keycap 1-1 is in the upper limit position), after the keycap 6-1 is lowered to a certain position, the shearing spring 3-10 starts to contact the membrane switch circuit 4-1, and the key cap continues. When it is lowered, the shearing elastic piece 3-10 generates a force which increases upward in the Z direction (see Fig. 20, paragraphs b to c, and point c is when the keycap 1-1 is at the lower limit position).

The resetting element of the prior art is a rubber spring ring 2-1, and the force and displacement relationship diagram of the rubber ring 2-1 is shown in FIG. 6. When the rubber ring 2-1 is pressed from the upper limit position to the lower limit position, the elastic force is obtained. From about 65g to about 30g; the upward force component in the Z direction produced by the tension spring 6-1 is reduced from 62g in the upper limit position to a minimum of about 10g (see Figure 20).

Comparing Fig. 6 and Fig. 20, it is easy to see that the technical solution using the first reset body acting on the scissor foot supports 1-3 is obviously better;

The structure and size of the two scissor feet supporting 1-3 which are mutually incompatible with each other are completely the same, and the two scissor-leg supports 1-3 for ensuring the mutual resistance of each other are completed in the same sub-mold; the first resetting body acts on the same The scissor foot supports 1-3. During the lifting process, the first reset body force drives the end abutting portion of the lower scissor foot support 1-3 to always keep in contact, so that the parallelism of the key cap during the lifting process is more Good, and eliminate the influence of the processing precision of the end abutment on the parallelism of the key cap during the lifting process;

The first resetting body acts on the scissor foot support 1-3. Under the driving force of the first resetting body, the two scissor foot supports 1-3 and the support plate 5-1 can be slidably connected (two scissor feet support) 1-3 can also use a rotational connection and a sliding connection with the support plate 5-1, but it is optimal to use a sliding connection, the processing precision of the connecting portion of the scissors foot support 1-3, and the support plate 5-1 The processing accuracy of the connecting portion has little influence on the parallelism of the key cap;

The first resetting body is formed by a tension spring, a ring-shaped steel wire 8-1, an annular elastic band 7-1, and a steel wire 34, thereby further achieving a low height of the key device and at the same time obtaining a very good hand feeling.

Referring to Fig. 21, the first reset body is an annular rubber band 7-1 (not shown in the film switch circuit 4-1).

Referring to Fig. 22, the first reset body adopts a ring-shaped annular steel wire 8-1, and the connecting portion of the support plate 5-1 is composed of two independent bent portions, and the two independent bent portions are all supported by the x-plate. The vertical plate 5-9 and the y support plate are combined with the horizontal plate 5-10, and a matching space is formed between the upper plate surface of the support plate 5-1 and the lower plate surface of the y-branch distribution horizontal plate 5-10. The opening of the space points to the inside, and the connecting part under the scissors is composed of the cut arc 3-13 and the matching arc 3-16, wherein the matching arc 3-13 and the matching arc 3-16 are the same center; The upper surface of the arc matching 3-16 is slidably engaged with the lower plate surface of the y-branch matching horizontal plate 5-10, and the arc-distributing arc 3-13 is slidably fitted with the upper plate surface of the support plate 5-1.

Referring to Figures 23 to 27, the anti-offset portion of the scissors is composed of a scissors extension preventing plate 3-18, and the retaining portion of the supporting plate is prevented by the end plate supporting the anti-de-hole 3-11 of the supporting plate penetrating the plate surface of the supporting plate 5-1. The end face 5-12 is configured; when the keycap 1-1 is at the upper limit position, the end of the cantilever end of the scissors extension retaining plate 3-18 is located in the support plate preventing hole 3-11.

When the key cap 1-1 of the key device is in the upper limit position, when the external force pulls up the key cap, the anti-offset portion of the scissors cooperates with the retaining portion of the support plate to prevent the connection of the scissor foot support 1-3 from the support plate 5-1. The part is disengaged, and the anti-offset portion of the scissors is composed of a scissors extension preventing and disclosing plate 3-18, and the anti-offing portion of the supporting plate is constituted by an end surface of the supporting plate preventing hole 3-11 penetrating the plate surface of the supporting plate 5-1;

It should be ensured that when the keycap 1-1 is in the upper limit position, the end of the cantilever end of the scissors extension retaining plate 3-18 is located in the support plate anti-drop hole 3-11;

It should be ensured that the keycap 1-1 is in the upper limit position, and when the external force pulls up the keycap, the end of the cantilever end of the scissors extension retaining plate 3-18 does not exceed the lower plate surface of the support plate 5-1;

It should be ensured that the keycap 1-1 is at the lower limit position, and the end of the cantilever end of the scissors extension retaining plate 3-18 does not interfere with the upper plate surface of the support plate 5-1.

Referring to Fig. 28, the first reset body is a compression spring 9-1, and the compression spring 9-1 acts obliquely on the lower portion of the keycap 1-1 and the scissor foot support 1-3.

Referring to FIG. 29 and FIG. 30, the first reset body adopts the steel wire 10-1, and both ends of the steel wire 10-1 are respectively rotatably connected with the support plate 5-1, and the protruding portion 10-2 and the scissor foot near the middle portion of the steel wire 10-1. The shear bolts of the supports 1-3 are rotated 3-12.

Referring to FIG. 31 and FIG. 32, the first reset body is a magnetic material 11-1 disposed between the two scissor foot supports 1-3 or is disposed between the two scissor foot supports 1-3 and the support plate 5-1. Magnetic material 11-1.

Referring to Figures 33 and 34, the urging force of the first resetting body acts in the vicinity of the connecting portion of the scissor foot support 1-3 in the x direction.

The scissor foot supports 1-3 can also be produced by injection molding (in this embodiment, the scissor feet are supported by sheet metal 1-3).

Referring to Fig. 35-- Fig. 44, the scissors foot support 1-3 of the key device is provided with a shearing abutment extension plate 3-7, and the end abutting portion is located at the cantilever end of the shearing abutment extension plate 3-7, wherein the two scissors The shearing abutment extension plates 3-7 of the foot supports 1-3 are connected by a shearing abutment connector.

The abutting portion connecting body is constituted by the abutting connecting body 12-1, the abutting connecting body 12-1 is composed of an elastic body or a flexible body or an annular metal, the elastic body is composed of a sheet-like elastic body, and the flexible body is composed of a sheet-like flexible body; The elastic body is composed of a sheet-like metal elastic piece, and the sheet-like flexible body is composed of a flexible fiber cloth, a cloth, a film, a rubber sheet or the like.

Referring to FIG. 35, FIG. 36, FIG. 37, FIG. 38, the shearing abutment extension plate 3-7 has a flat shape, and the end abutting portion is located at the end of the cantilever end of the shearing abutment extension plate 3-7 (this embodiment adopts the end portion to resist The portion is located at a corner of the cantilever end of the shearing abutment extension plate 3-7), and the shearing abutment extension plates 3-7 of the two scissor foot supports 1-3 are connected by the shearing abutment connecting body, and the two scissors feet are used in this embodiment. The shearing abutment extensions 3-7 of the supports 1-3 are bonded or welded by shearing the contact connectors (but preferably by bonding).

Referring to FIGS. 39-43, the shearing abutment extension plate 3-7 is bent upward to form an abutting portion extending the curved plate 3-20, and when the abutting portion extends the curved plate 3-20 and the shearing abutment extending plate 3-7 When C≥90 degrees, the end abutting portion is located at the end of the cantilever end of the abutting portion extending the curved plate 3-20 (in this embodiment, the end abutting portion is located at the corner of the cantilever end of the abutting portion extending the curved plate 3-20) The two anti-contact portions of the scissor-supporting members 1-3 are connected by the abutting portion connecting body.

When the angle C between the abutting portion bending plate 3-20 and the shearing abutment extending plate 3-7 is 0 degrees - 89.99 degrees, the end abutting portion is located at a circle formed when the bending abutting portion extends the curved plate 3-20 The curved surface or the abutting portion extends the surface formed when the curved plate 3-20 is folded, and the shearing abutment extending plates 3-7 of the two scissor feet supporting 1-3 are connected by the abutting portion connecting body (not shown in the present embodiment).

Referring to Figure 44, the stamping and bending shearing abutment extension plate 3-7 forms a shearing arc 3-16, and the matching folding plate 3-21, wherein the matching arcing 3-16 and the supporting plate are matched with the horizontal plate 5- The lower plate surface of the 8 is slidably engaged, and the end abutting portion is formed by the cantilever end of the folding and folding plate 3-21 (in this embodiment, the end abutting portion is formed by the corner of the cantilever end of the folding and folding plate 3-21) The shearing plates 3-21 of the two scissor feet supporting 1-3 are bonded or welded by shearing the contact connecting body (but preferably by bonding).

The scissor foot support 1-3 can also be produced by injection molding (the scissor foot support 1-3 produced by the sheet metal in this embodiment).

It is also possible to open the through hole near the end of the cantilever end of the shearing abutment extension plate 3-7, and the end abutting portions of the two scissor foot supports 1-3 are located at the end of the cantilever end of the shearing abutment extension plate 3-7. The annular metal penetrates the cantilever end through holes of the two shearing abutment extension plates 3-7 to connect the two scissor foot supports 1-3 (not shown in the figure).

The structure and size of the two scissor feet supporting 1-3 which are mutually incompatible with each other are exactly the same, and the two scissor-leg supports 1-3 for ensuring the precision against each other are completed in the same sub-mold; under the action of the contact portion connecting body The end cap of the scissor foot support 1-3 is always in contact during the lifting process, so that the parallelism of the key cap during the lifting process is better, and the machining precision of the end abutment portion is eliminated during the lifting process. The influence of the parallelism of the key caps;

The two scissor foot supports 1-3 are connected by the abutting portion connecting body, the two scissor foot supports 1-3 are slidably connected with the supporting plate 5-1, the processing precision of the connecting portion of the scissor foot supporting 1-3, and the supporting plate 5 The processing accuracy of the connection portion of -1 has little effect on the parallelism of the key cap;

The two scissor foot supports 1-3 are connected by the contact portion connecting body, thereby further reducing the height of the key device;

By connecting the scissor foot supports 1-3 with the sheet-shaped abutting portion connectors, the end abutment structure of the scissor foot supports 1-3 is greatly simplified.

Example 2

Referring to FIG. 45-FIG. 59, a key device supported by a thin scissors includes a key cap, a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected with the key cap and the support plate, and the scissor foot supports each other. The transmission of force constitutes a synchronous linkage support structure to ensure that the key cap moves up and down parallel to the support plate; the reset body is constituted by the first reset body, and the first reset body is provided with two connection portions, one of the first reset bodies The connecting portion is connected to the connecting portion of one of the scissor foot supports 1-3, and the other connecting portion of the first resetting body is connected to the connecting portion of the other scissor foot support 1-3; the connecting portion of the first resetting body is formed by the first convex portion The sliding portion and the second sliding portion are configured to form a distance L between the first convex sliding portion and the second sliding portion and are connected together; the connecting portion of the scissor foot support 1-3 is composed of a scissors limiting portion and a shearing inclined surface 3-19, and the scissors The limiting portion is parallel with the scissor foot support 1-3, and the shearing inclined surface 3-19 forms a certain angle a with the scissor foot support 1-3; wherein the second sliding portion is slidably engaged with the scissors limiting portion, and the first convex sliding portion is Shear bevel 3-19 sliding fit, at The first convex sliding portion is pressed against the shearing surface 3-19 under the elastic force; the first reset body is formed when the key cap of the key device overcomes the elastic force of the first reset body under the action of the external force and moves from the upper limit position to the lower limit position. The elastic force is basically the same or the elastic force of the first reset body is gradually reduced.

Scissor foot support 3-1 This embodiment adopts sheet metal stamping; the scissor foot support 3-1 can also be injection molded by plastic. The reset body is composed of a first reset body and a second reset body, and the first reset body is made of steel wire and elastic. Body composition.

The first convex sliding portion is located outside the second sliding portion, and the first convex sliding portion is parallel to the second sliding portion.

The key cap of the key device overcomes the elastic force of the first reset body under the action of an external force, and moves from the upper limit position to the lower limit position, the first convex sliding portion faces up or down and inward along the plate of the shear slope 3-19 Moving, the second sliding portion is restricted by the scissors limiting portion and moves along the plate surface of the scissor foot support 1-3 or the plate surface parallel to the plate surface of the scissor foot support 1-3, and the elastic force of the first reset body is substantially unchanged. Or the elastic force of the first reset body is gradually reduced.

A complex limit space is disposed below the scissors limit portion, and the second sliding portion is restricted to move within the complex limit space.

A complex limit space is disposed between the scissors limit portion and the scissor foot support 1-3, and the second sliding portion is restricted to move within the complex limit space.

Referring to Fig. 45, the first reset body is composed of a ring-shaped steel wire 8-1 (used in the embodiment), the first convex sliding portion is constituted by the protruding steel wire segment 8-3, and the second sliding portion is constituted by the y steel wire segment 8-2. The protruding wire 8-3 is smoothly connected with the y wire segment 8-2 as a whole, the protruding wire segment 8-3 is located between the two y wire segments 8-2, and the annular wire 8-1 can also be non-closed. --- That is, the lower part of the dotted line in the figure is completely removed, but the ring-shaped steel wire from the symmetrical structure is optimal.

Referring to Fig. 47, the connecting portion of the scissor foot support 1-3 is composed of a scissors limiting portion and a shearing inclined surface 3-19, and the scissors limiting portion is constituted by a horizontal bending edge 3-21 parallel to the scissor foot supporting 1-3, There is a complex limit space below the edge of the horizontal bend 3-21, and the complex limit space is located between the lower surface of the horizontally bent edge 3-21 and the upper surface of the scissor support 1-3 (for example), the scissors The connecting portion of the foot support 1-3 is composed of two horizontal bending edges 3-21 and one shearing inclined surface 3-19, the shearing inclined surface 3-19, the horizontal bending edge 3-21 are arranged along the y direction, and the inclined inclined surface 3- 19 is located between the two horizontal bending edges 3-21, the opening of the composite limiting space of the horizontal bending edge 3-21 points in the direction of the positive x, and the shearing inclined surface 3-19 is connected with the cut bending edge 3-20. , the downward bending extension plate is formed to cut the bent edge 3-20, and then the extension plate is bent in the negative x direction and the positive Z direction to form the shearing slope 3-19, and the horizontal bending edge 3-21 is bent by the z bending edge 3 -23 connection, the side bend of the cantilever 3-21 points to the positive x direction;

The anti-offset portion of the scissors is composed of a scissors extension preventing plate 3-18, and the retaining portion of the supporting plate is constituted by an end surface of the supporting plate preventing hole 3-11 penetrating the plate surface of the supporting plate 5-1; when the key cap 1-1 is on In the limit position, the end of the cantilever end of the scissors extension retaining plate 3-18 is located in the support plate anti-drop hole 3-11. The scissors extension preventing plate 3-18 (scissor preventing portion) on the scissors foot support 1-3 is provided with a notch formed by punching, and the notched end face parallel to the cantilever end surface of the scissors extending retaining plate 3-18 constitutes an anti-rotation Limit surface 3-24.

Referring to Figure 47 - Figure 50, it is necessary to ensure that the distance between the anti-rotation limit surface 3-24 and the cantilever end face of the scissors extension retaining plate 3-18 ≤ the thickness of the support plate 5-1, or the limit position surface 3-24 The distance between the cantilever end faces of the scissors extension retaining plates 3-18 needs to be ensured: when the key cap 1-1 is subjected to the upward pulling force, or when the scissor foot supports 1-3 are mounted, the scissor feet support the abutting portions of 1-3. And the cantilever end face of the scissors extension retaining plate 3-18 does not exceed the lower plate surface of the support plate 5-1 (the sealing film which will damage the lower plate surface of the support plate 5-1 when it is exceeded); the scissor foot support 1 3 is constituted by the scissor foot supports 1-3 whose ends are mutually in contact with each other, and the scissor foot supports 1-3 can also be mutually resisted by the middle portion (but it is preferable to support the 1-3 with the scissor legs which can resist the end portions).

Referring to Fig. 48 - Fig. 49, the second reset body is composed of a small rubber body 13-1, and the small rubber body is placed outside the scissor foot support 1-3. In this embodiment, two small rubber bodies are placed along the x. The scissors feet support 1-3 on the outer side; the scissors foot support 1-3 is located in the through hole of the membrane switch circuit 4-1 (the membrane switch circuit 4-1 surrounds the scissor support 1-3 and the support plate 5-1 The outer side of the connecting portion), the x-wire segment 8-4 of the annular wire 8-1 is located outside the connecting portion of the support plate 5-1.

Referring to FIG. 50, the second reset body is composed of a reset elastic piece connected to the key bracket 1-5, and the reset elastic piece is composed of the key arm elastic piece 14-1, and one end of the key arm elastic piece 14-1 and the other end of the key support 1-5 are extended downward. In this embodiment, four key arm springs 14-1 are used. One end of the four key arm springs 14-1 is connected to the vicinity of the middle of the key bracket 1-5, and the other ends of the four key arm springs 14-1 are respectively directed to The two sides of the middle portion of the key bracket 1-5 extend downward; or one end of the four key arm springs 14-1 is connected to the vicinity of the upper and lower sides of the key bracket 1-5, and four key arm springs 14-1 The other end of the 1 is respectively directed to the middle of the key bracket 1-5 and extends downward (not shown)

The key arm spring piece 14-1 can also be riveted or bonded to the vicinity of the middle portion of the key holder 1-5; the key arm spring piece 14-1 can also be riveted or bonded to the plate surface near the both ends of the key holder 1-5.

Referring to Figures 47 and 54, the bevel 3-19 is formed by a bevel 3-19 having a certain angle a to the lying bead 3-21, and the bevel 3-19 extends from bottom to top and inward.

Referring to Fig. 48-- Fig. 57, the annular wire 8-1 is parallel to the support plate 5-1, and the shearing surface 3-19 is at an angle a with the scissor foot support 1-3, and the angle a should ensure: the key of the key device Under the action of external force, the cap overcomes the elastic force of the annular steel wire 8-1, and when moving from the upper limit position to the lower limit position, the protruding steel wire segment 8-3 moves upward along the plate of the shear slope 3-19 and moves inward, y The wire segment 8-2 is restrained by the lying edge 3-21 and moves along the upper plate surface of the scissors foot support 1-3 or the plate parallel to the plate surface of the scissors foot support 1-3, the annular wire 8-1 The elastic force is basically constant or the elastic force of the looped wire 8-1 is gradually reduced.

Referring to Fig. 58 - Fig. 59, the bevel 3-19 is formed by a chamfer 3-19 which forms an angle a with the beveled edge 3-21, and the bevel 3-19 extends from top to bottom and inward.

The annular wire 8-1 is parallel to the support plate 5-1, and the shearing surface 3-19 is at an angle a to the scissor foot support 1-3. The angle a should ensure that the key cap of the key device is under the external force and overcomes the ring. When the elastic force of the wire 8-1 moves from the upper limit position to the lower limit position, the protruding wire segment 8-3 moves upward and inward along the plate of the shear slope 3-19, and the y wire segment 8-2 is folded horizontally. The flange 3-21 limits and moves along the upper plate surface of the scissor foot support 1-3 or the plate parallel to the plate surface of the scissor foot support 1-3, and the elastic force of the annular steel wire 8-1 is substantially constant or annular. The elastic force of the wire 8-1 is gradually reduced.

Referring to Fig. 60, the bevel 3-19 extends in the x direction and upwardly, and the space between the bevel 3-19 and the scissors II plane 3-27 of the scissor foot support 1-3 can accommodate the protruding wire segment 8-3.

Referring to Figure 60 - Figure 62, the scissor foot support 1-3 is formed into the scissors I plane 3-26 and the scissors II plane 3-27, the upper connection of the scissors is located in the plane of the scissors I 3-26, and the scissors limit is located in the scissors II Plane 3-27, the second sliding portion is slidably engaged with the plane of the scissors II 3-27, the plane 1-26 of the scissors I is located above the plane 3-27 of the scissors II, and the second sliding portion is constituted by the y wire section 8-2.

Mounting through holes 3-25 penetrating the plate surface are formed below the x-direction of the scissors upper connecting portion of the scissor foot support 1-3.

The reset body 3-28 of the scissor foot support 1-3 is formed on the left and right sides in the y direction.

A through hole penetrating through the plate surface is provided near the middle portion of the support plate and near the middle portion of the switch circuit, and a transparent and upwardly convex lens 15-1 is disposed in the through hole. Scissors limit,

The rest is the same as in the first embodiment.

Example 3

Referring to FIG. 63--FIG. 65, including a key cap, a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected with the key cap and the support plate; and one end of the scissor foot support 1-3 is provided with an end portion. a contact portion, a scissors lower connecting portion is disposed between the other end of the scissor foot support 1-3 and the end abutting portion, and the scissors lower connecting portion is closer to the end abutting portion;

When the key cap 1-1 moves up and down between the upper limit position and the lower limit position, the end contact portions of the two scissor foot supports 1-3 are always kept in contact with each other, forming a force between the two scissor foot supports 1-3. Transfer and constitute a synchronous linkage support structure to ensure that the keycap moves parallel to the support plate for lifting movement;

When the key device is in a natural state, the key cap 1-1 is in an upper limit position, and the angle between the scissor foot support 1-3 with respect to the support plate 5-1 is an angle and a b angle, the support plate The matching space opening of 5-1 points to the outer side; a angle=b angle, when the keycap 1-1 receives the upward force, the angle of the scissor foot support 1-3 relative to the support plate 5-1 > a angle, the scissors The baffle plate 3-29 is attached to the upper plate surface of the support plate 5-1 to prevent the lower end structure of the two scissor foot supports 1-3 from exceeding the lower plate surface of the support plate 5-1;

The connecting part under the scissors is composed of the cutting arc 3-13 and the matching arc 3-16, wherein the matching arc 3-13 and the matching arc 3-16 are the same center; the scissors blocking plate 3-29 is stamping. Cut the arc matching 3-13 to form (scissors blocking plate 3-29 is the extension plate for cutting the arcing 3-13);

When the two scissor foot supports 1-3 are respectively located at an angle θ1 and an angle θ2, the lower end structures of the two scissor foot supports 1-3 are aligned with the lower surface of the key device, where a=b.

When the two scissor foot supports 1-3 are respectively located at the θ1 angle and the θ2 angle, the lower end structures of the two scissor foot supports 1-3 do not exceed the lower plate surface of the support plate 5-1.

The support plate 5-1 is further provided with a support plate guide plate 5-11 for guiding the scissor foot support 1-3;

Rotating the key device 180 degrees, that is, the support plate 5-1 becomes the key cap 1-1, and the key cap 1-1 becomes the support plate 5-1; that is, the key cap 1-1 (the main structure of the connection portion of the key cap 1-1) It remains unchanged) interchangeably with the support plate 5-1 (the main structure of the joint of the support plate 5-1 remains unchanged), so that the scissor feet support 1-3 to be mounted in a V-shape or to support the scissor feet 1-3. The eight-type installation can also achieve the same effect: when the key device is in the natural state, the keycap 1-1 is in the upper limit position, and the scissor-foot support 1-3 is opposite to the keycap 1-1. The angle between the extreme angles is an angle a and a b angle, and the mating space openings of the keycap 1-1 are both directed outward (not shown).

Referring to FIG. 65-FIG. 70, the method for mounting the scissor foot support of the key device includes the following steps:

Separately or simultaneously aligning the lower scissors connection of the two scissor feet 1-3 with the mating space opening of the support plate 5-1 or with the mating space opening position of the key cap 1-1; respectively or simultaneously The scissor foot support 1-3 is placed within the θ1 angle range and the θ2 angle range; the scissor foot support 1-3 is pushed respectively inward or simultaneously, and the scissor foot support 1-3 is gradually inserted from the mating space opening of the support plate 5-1 into the support The mating space of the plate 5-1, or the scissor foot support 1-3 gradually enters the mating space of the key cap 1-1 from the mating space opening of the keycap 1-1, wherein θ1=a+Δ degrees, θ2=b+Δ degrees, wherein △ = 0 degrees - 2 degrees; the two scissor feet support 1-3 are standing, respectively, or respectively, the two scissors feet support 1-3 of the lower scissors connection with the support plate 5-1 Aligning the space opening or the position of the mating space opening of the keycap 1-1; rotating the two scissor foot supports 1-3 separately or simultaneously, so that the two scissor foot supports 1-3 are placed within the angle range of θ1 and Θ2 angle range; push the scissor foot support 1-3 inward, the scissor foot support 1-3 gradually enters the cooperation of the support plate 5-1 from the mating space opening of the support plate 5-1 M- or scissor support the key top with 1-3 branched gradually from an opening into the mating space 1-1 space 1-1 keycap.

Referring to FIG. 66, the scissors lower connecting portions of the two scissor foot supports 1-3 are respectively aligned with the matching space opening positions of the support plate 5-1; the two scissor foot supports 1-3 are standing, The support plate 5-1 is in a flat shape, and the two scissor foot supports 1-3 are moved downward, and the outer structure of the end abutting portion of the scissor foot support 1-3 is in contact with the support plate 5-1 or the switch circuit is in contact with each other. , the two scissor foot supports 1-3 are supported by the support plate 5-11 to limit the degree of freedom perpendicular to the paper surface;

Referring to FIG. 67--FIG. 68, the two scissor-leg supports 1-3 are respectively rotated outwardly or simultaneously, so that the two scissor-leg supports 1-3 are placed within an angle range of θ1 and an angle range of θ2;

Referring to FIG. 69--FIG. 70, the scissor foot support 1-3 is pushed inward, and the scissor foot support 1-3 gradually enters the mating space of the support plate 5-1 from the mating space opening of the support plate 5-1.

Referring to FIG. 71--74, the method for mounting the scissor-foot support of the key device includes the following steps:

Separating or simultaneously aligning the lower scissors connecting portions of the two scissor feet 1-3 with the mating space opening of the support plate 5-1 or the mating space opening position of the key cap 1-1, respectively, simultaneously or simultaneously The two scissor feet support 1-3 are placed within the angle range of θ1 and the angle range of θ2; the scissor foot supports 1-3 are respectively pushed inward or simultaneously, and the scissor foot supports 1-3 are gradually opened from the mating space of the support plate 5-1. Entering the mating space of the support plate 5-1, or the scissor foot support 1-3 gradually enters the mating space of the key cap 1-1 from the mating space opening of the key cap 1-1, where θ1=a+Δ degrees, θ2=b+Δ degrees Wherein Δ = 0 degrees - 2 degrees; the scissor foot supports 1-3 are unobstructed from entering the mating space of the support plate 5-1 or the mating space of the keycap 1-1.

Referring to FIG. 75 and FIG. 76, including a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected to the key cap and the support plate; and one end of the scissor foot support 1-3 is provided with an end contact portion. Between the other end of the scissor foot support 1-3 and the end abutment portion is provided a scissor lower connecting portion, the scissor lower connecting portion is closer to the end abutting portion;

The mating space opening of the keycap 1-1 is directed to the inner side;

The two scissor foot supports 1-3 are located in the middle through hole of the switch circuit (that is, the connection of the two scissor foot supports 1-3 to the support plate 5-1, and the switch circuit surrounds the two scissor foot supports 1-3) The second reset body is disposed around the two scissor foot supports 1-3 and above the switch circuit.

Referring to FIG. 75 - FIG. 82, the method for mounting the scissor foot support of the key device includes the following steps:

The keycap 1-1 is inclined at an angle with the support plate 5-1, and the lower surface of the inclined keycap 1-1 at the lower end is brought into contact with the upper end portion of one of the scissor foot supports 1-3, and the key is pulled inward Cap 1-1, the key of the keycap 1-1 of the end of the key edge 1-12 into the mounting through hole 3-25 of the scissor foot support 1-3;

Press the key cap 1-1 down to complete the installation.

Referring to FIG. 77 and FIG. 78, the keycap 1-1 is inclined at a certain angle with the support plate 5-1, and the left end of the inclined keycap 1-1 is located at the lower end;

Referring to Fig. 79, on the outer side of the scissor foot support 1-3 on the right side, the lower surface of the inclined (right side) keycap 1-1 at the lower end is in contact with the upper end portion of the (right) scissor foot support 1-3. ,

Referring to FIG. 80, the keycap 1-1 is pulled inward, and the scissors anti-off structure passes over the key limit structure, the scissors anti-drop structure is composed of the scissors limit position 3-3, and the key limit structure is independently set by the key limit end. Face 1-6, finally the key end of the key cap 1-1 of the end of the key 1-1 into the mounting through hole 3-25 of the scissor foot support 1-3;

Referring to FIG. 81, the position of the retaining key local extension 1-12 and the mounting through hole 3-25 is unchanged or the position of the retaining key local extension 1-12 and the mounting through hole 3-25 is substantially unchanged, and the keycap 1-1 is rotated downward. The other end (left end), the connecting portion of the keycap 1-1 is over the outer side of the upper end of the other scissor foot support 1-3, and the lower surface of the keycap 1-1 is in contact with the upper end of the scissor foot support 1-3;

Or keep (the right side) keycap 1-1 in contact with the right side of the scissors foot support 1-3, and rotate the other end (left end) of the keycap 1-1 downward so that the connection of the keycap 1-1 passes over another a scissor foot supports the outer side of the upper end of the 1-3, and the lower surface of the key cap 1-1 is in contact with the upper end of the scissor foot support 1-3;

Referring to FIG. 81 and FIG. 82, the keycap 1-1 is pressed down or the keycap 1-1 is pulled down and the combination thereof, and the scissors anti-off structure on the left side passes over the key limit structure on the left side, and the key cap is installed.

The rest is the same as in the first embodiment.

All of the above embodiments can rotate the key device 180 degrees, that is, the support plate 5-1 becomes the key cap 1-1, and the key cap 1-1 becomes the support plate 5-1; that is, the key cap 1-1 (key cap 1-1) The main structure of the connecting portion remains unchanged) and the support plate 5-1 (the main structure of the connecting portion of the supporting plate 5-1 remains unchanged) is interchanged, so that the scissor feet support 1-3 to be V-shaped or to make the scissors The foot supports 1-3 are installed in eight shapes, which are equally equivalent to achieve the above effects.

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 invention relates to a key device supported by a thin scissors, which comprises a key cap, a reset body, a switch circuit and a scissor foot support, wherein the scissor foot support is respectively connected with the key cap and the support plate, and the scissor foot supports the force between each other. The transmission constitutes a synchronous linkage support structure to ensure that the keycap moves up and down parallel to the support plate, wherein: one end of the scissor foot support 1-3 is provided with an end abutment portion, and the scissor foot supports 1-3 A scissors lower connecting portion connected to the support plate is disposed between one end and the end abutting portion, the lower scissors connecting portion is closer to the end abutting portion; the key cap 1-1 is between the upper limit position and the lower limit position Moving up and down, the resetting body acting on the scissor foot support 1-3 or the abutting part connecting body connecting the scissor foot supports 1-3 keeps the end abutting portions of the two scissor foot supports 1-3 constantly pressed against each other to form two The transmission of the force between the scissor feet supports 1-3 and constitutes a synchronous linkage support structure to ensure that the key cap moves up and down parallel to the support plate.
The invention relates to a key device supported by a thin scissors, which comprises a key cap, a reset body, a switch circuit and a scissor foot support, wherein the scissor foot support is respectively connected with the key cap and the support plate, and the scissor foot supports the force between each other. The transmission constitutes a synchronous linkage support structure to ensure that the keycap moves up and down parallel to the support plate, and is characterized in that:

The reset body is composed of a first reset body, and the first reset body is provided with two connecting portions, and one of the connecting portions of the first resetting body is connected with a connecting portion of one of the scissor foot supports 1-3. The other connecting portion of the first resetting body is connected to the connecting portion of the other scissor foot support 1-3;

The connecting portion of the first reset body is composed of a first convex sliding portion and a second sliding portion, and the first convex sliding portion and the second sliding portion form a spacing L and are connected together;

The connecting portion of the scissor foot support 1-3 is composed of a beveled surface 3-19, the shearing surface 3-19 and the scissor foot support 1-3 at a certain angle a;

Wherein, the second sliding portion moves along a plane of the scissor foot support 1-3 or moves along a plane parallel to a plane of the scissor foot support 1-3, and the first convex sliding portion slides with the shearing surface 3-19 Cooperating, under the action of the elastic force, the first convex sliding portion is pressed against the shearing surface 3-19;

The key cap of the key device overcomes the elastic force of the first reset body under the action of an external force, and the elastic force of the first reset body changes little or the first reset when moving from the upper limit position to the lower limit position The elasticity of the body is gradually reduced.
A key device supported by a thin scissors according to claim 1 or 2, wherein the reset body is constituted by a first reset body, and a force of the first reset body is applied to two scissor feet. 1-3, the force of the first reset body or the component of the force of the first reset body is directed to the inner side of the key device in the x direction; when the key cap 1-1 is moved up and down in the Z direction, Under the action of the first resetting body, the end abutting portions of the two scissor foot supports 1-3 are always kept in contact with each other, forming a force transmission between the two scissor foot supports 1-3.
A key device supported by a thin scissors according to claim 3, wherein the reset body is composed of a first reset body and a second reset body, and the key cap 1-1 overcomes the first force by an external force. When the Z-direction upward component force generated by the elastic force of the reset body moves downward in the Z direction, the Z-direction upward component force generated by the elastic force of the first reset body decreases as the a-angle and the b-angle decrease; the second reset After the key cap is lowered to a certain position, the second resetting body begins to generate an upward force in the Z direction.
A key device supported by a thin scissors according to claim 4, wherein one end of the scissor foot support 1-3 is provided with an end abutting portion, and the other end of the scissor foot support 1-3 is disposed. a scissor upper connecting portion that cooperates with the key cap, wherein the first resetting body is respectively connected to the two scissor foot supports 1-3 that are in contact with each other, and the elastic force of the first resetting body acts on the scissor upper connecting portion and the end abutting portion between.
A key device supported by a thin scissors according to claim 1 or 2 or 3 or 5, wherein the ends of the two scissor foot supports 1-3 of the ultra-thin key device are in contact with each other and interfere with each other. The end of the end of the two scissors feet 1-3 is provided with a scissor anti-off part. When the key cap 1-1 of the key device is in the upper limit position, when the external force pulls up the key cap, the scissors anti-off part limit fit Preventing the scissor foot support 1-3 from coming off the connection portion of the support plate 5-1 or the scissors retaining portion and the support plate retaining portion limit fit, preventing the scissor foot support 1-3 from coming off the connection portion of the support plate 5-1 .
A key device supported by a thin scissors according to claim 6, wherein the scissor retaining portion is formed by a scissors extension preventing plate 3-18, and the supporting plate preventing portion is penetrated by the supporting plate 5-1. The end surface of the plate supporting preventing hole 3-11 is formed; when the key cap 1-1 is at the upper limit position, the end of the cantilever end of the scissors extending retaining plate 3-18 is located in the supporting plate preventing hole 3-11 .
A key device supported by a thin scissors according to claim 6, wherein the scissor foot supports 1-3 are provided with an extended I-bend plate 3-4 and an extended II bent plate 3-5. Upwardly bending the shearing extension extending plate 3-7 to form an extended I-bending plate 3-4 and an extending II bending plate 3-5, wherein an end abutting portion of one of the scissor-leg supports 1-3 is located at the extension The lower plate surface of the curved plate 3-4, the end abutting portion of the other scissor foot support 1-3 is located near the cantilever end of the extended II bending plate 3-5, wherein one of the scissors feet supports the scissors 1-3 The detachment portion is formed by the I-limit bending plate 3-15 formed by the downward bending near the tail portion of the extended I-bend plate 3-4, and the scissors retaining portion of the other scissor-leg support 1-3 is located at the extension II Bend the plate 3-5.
A key device supported by a thin scissors according to claim 1 or 3 or 4 or 5, wherein the scissor foot support 1-3 of the key device is provided with a shearing abutment extension plate 3-7, The end abutting portion is located at the cantilever end of the shearing abutment extension plate 3-7, wherein the shearing abutment extension plates 3-7 of the two scissor foot supports 1-3 are connected by the shearing abutment connector.
A key device supported by a thin scissors according to claim 9, wherein the shearing resist extension plate 3-7 has a flat shape, and the end abutting portion is located at the shearing resist extension plate 3. -7 the cantilever end or the shearing abutment extension plate 3-7 is bent upward to form an abutting portion extending and bending plate 3-20, and the end abutting portion is located at a cantilever end of the abutting portion extending and bending plate 3-20 Or the abutting portion extends the arcuate surface of the curved plate 3-20.
A key device supported by a thin scissors according to claim 1 or 10, wherein the contact portion connecting body is composed of an elastic body or a flexible body or an annular metal, and the elastic body is composed of a sheet-like elastic body. The flexible body is composed of a sheet-like flexible body.
A key device supported by a thin scissors according to claim 2, wherein the connecting portion of the scissor foot support 1-3 is constituted by a scissors limiting portion and a shearing slope 3-19, and the scissors limit The portion is parallel to the scissor foot supports 1-3.
A key device supported by a thin scissors according to claim 2 or 12, wherein said first convex sliding portion protrudes outwardly or inwardly from said second sliding portion, said A convex sliding portion is parallel to the second sliding portion.
A key device supported by a thin scissors according to claim 13, wherein said scissor foot supports 1-3 are formed into a scissors I plane 3-26 and a scissors II plane 3-27, said scissors The connecting portion is located in the plane 3-26 of the scissors I, the scissors limiting portion is located in the plane 3-27 of the scissors II, the second sliding portion is slidably engaged with the plane 3-27 of the scissors II, and the plane of the scissors I 3-26 is located in the plane of the scissors II Above 3-27.
A key device supported by a thin scissors according to claim 2, wherein a mounting through hole 3 is formed through the plate surface at a lower portion of the scissor upper connecting portion of the scissor foot support 1-3 in the x direction. -25.
A key device supported by a thin scissors according to claim 2, wherein said scissors feet support 1-3 of the reset body members 3-28 formed on the left and right sides in the y direction.
A key device supported by a thin scissors according to claim 2, wherein a through hole penetrating through the plate surface is formed near the middle portion of the support plate and near the middle portion of the switch circuit, and the through hole is formed in the through hole A convex lens 15-1 which is transparent and convex upward is provided.
A key device supported by a thin scissors according to claim 2 or 12, wherein the key cap of the key device is moved from an upper limit by an external force against an elastic force of the first reset body. When the limit position is reached, the first convex sliding portion moves upward or downward along the shearing surface 3-19 and moves inward, and the second sliding portion is restricted by the scissors limiting portion and along the The plate surface of the scissor foot support 1-3 or the surface parallel to the plate surface of the scissor foot support 1-3 moves upward or downward and moves inward, the elastic force of the first reset body is substantially unchanged or The elastic force of the first reset body is gradually reduced.
A key device supported by a thin scissors according to claim 12, wherein a folding limit space is disposed under the scissors limiting portion, and the second sliding portion is restricted to the complex limiting space. Move inside.
A key device supported by a thin scissors according to claim 19, wherein a folding limit space is provided between the scissors limiting portion and the scissor foot support 1-3, and the second The sliding portion is restricted from moving within the complex limiting space.
A key device supported by a thin scissors according to claim 2, wherein said shearing surface 3-19 forms an angle a with said scissor foot support 1-3 to ensure: said key device Under the action of an external force, the key cap overcomes the elastic force of the first reset body, and when the upper limit position is moved to the lower limit position, the elastic force of the first reset body is substantially unchanged or the elastic force of the first reset body is gradually reduced. small.
A key device supported by a thin scissors according to claim 12, wherein the connecting portion of the scissor foot support 1-3 is composed of two scissors limiting portions and one shearing inclined surface 3-19. The shearing bevels 3-19 are located between the scissors limiters.
A key device supported by a thin scissors according to claim 2 or 12, wherein said first convex sliding portion is located between said two second sliding portions.
A key device supported by a thin scissors according to claim 2 or 12, wherein said scissor foot supports 1-3 are constituted by scissor foot supports 1-3 whose ends are in contact with each other.
A key device supported by a thin scissors according to claim 2, wherein the reset body is constituted by a first reset body and a second reset body, and the first reset body is parallel to the support plate.
A key device supported by a thin scissors according to claim 2, wherein the opening of the complex limiting space of the scissors limiting portion points in a direction of positive x.
A key device supported by a thin scissors according to claim 2, wherein said first reset body is composed of a steel wire and an elastic body.
A key device supported by a thin scissors according to claim 2, wherein said first reset body is formed of a ring-shaped wire.
A key device supported by a thin scissors according to claim 2, wherein said first reset body is constituted by a tension spring.
A scissor foot support mounting method of a key device, the scissor foot support mounting method of the key device comprising the steps of respectively supporting the two scissors feet to support the lower scissors connecting portion and the support plate 5-1 The matching space opening is aligned with the position of the matching space opening of the keycap 1-1;

Separating or simultaneously arranging the two scissor foot supports 1-3 within an angle range of θ1 and an angle range of θ2;

Pushing the scissor foot support 1-3 separately or simultaneously, the scissor foot support 1-3 gradually enters the mating space of the support plate 5-1 from the mating space opening of the support plate 5-1, or the scissor foot support 1-3 stepwise from the key The mating space opening of the cap 1-1 enters the mating space of the keycap 1-1, where θ1 = a + Δ degrees, θ2 = b + Δ degrees.
The scissor-foot support mounting method of a key device according to claim 30, comprising: a key cap, a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected to the key cap and the support plate; One end of the scissor foot support 1-3 is provided with an end abutting portion, and the lower end of the scissor foot support 1-3 and the end abutting portion are provided with a lower scissors connecting portion, and the lower scissors connecting portion is closer The end abutting portion;

When the key cap 1-1 moves up and down between the upper limit position and the lower limit position, the end contact portions of the two scissor foot supports 1-3 are always kept in contact with each other, forming a force between the two scissor foot supports 1-3. Transfer and constitute a synchronous linkage support structure to ensure that the keycap moves parallel to the support plate for lifting movement;

When the key device is in a natural state, the key cap 1-1 is in an upper limit position, and the upper limit angles of the scissor foot support 1-3 with respect to the support plate 5-1 or relative to the key cap 1-1 are respectively a angle and b angle, the mating space opening of the support plate 5-1 or the mating space opening of the keycap 1-1 is directed to the outside.
A scissor-foot supporting method for a key device according to claim 30, wherein the two scissor-leg supports 1-3 are in a standing shape, and the scissor legs support 1-3 scissors respectively or simultaneously The lower connecting portion is respectively aligned with the mating space opening of the support plate 5-1 or with the mating space opening position of the key cap 1-1;

Rotating the two scissor foot supports 1-3 separately or simultaneously, so that the two scissor foot supports 1-3 are placed within the θ1 angle range and the θ2 angle range;

Push the scissor foot support 1-3 inward, and the scissor foot support 1-3 gradually enters the mating space of the support plate 5-1 from the mating space opening of the support plate 5-1, or the scissor foot support 1-3 gradually from the support cap 1 The mating space opening of -1 enters the mating space of the keycap 1-1.
The scissor foot support mounting method of a key device according to claim 30, wherein when the two scissor foot supports 1-3 are respectively located at an angle of θ1 and an angle of θ2, the two scissor feet support 1- The lower end structure of 3 is aligned with the lower surface of the key device, where a = b.
The scissor foot support mounting method of a key device according to claim 30, wherein when the two scissor foot supports 1-3 are respectively located at an angle of θ1 and an angle of θ2, the two scissor feet support 1- The lower end structure of 3 does not exceed the lower surface of the support plate 5-1.
A scissor foot support mounting method for a key device according to claim 30, wherein the scissor foot support 1-3 is unobstructed from entering the mating space of the support plate 5-1 or the key cap 1-1 Match space.
A key cap mounting method for a key device, characterized in that the key cap mounting method of the key device comprises the following steps:

The keycap 1-1 is inclined at an angle with the support plate 5-1, and the lower surface of the inclined keycap 1-1 at the lower end is brought into contact with the upper end portion of one of the scissor foot supports 1-3, and the key is pulled inward Cap 1-1, the scissors anti-off structure is over the key limit structure, the key of the key cap 1-1 of the end is extended to the mounting hole 3-25 of the scissor foot support 1-3;

The position of the retaining key local extension 1-12 and the mounting through hole 3-25 is unchanged or the position of the retaining key local extension 1-12 and the mounting through hole 3-25 is substantially unchanged, and the other end of the keycap 1-1 is rotated downward so that the other end of the keycap 1-1 is rotated downward The connecting portion of the key cap 1-1 passes over the outer side of the upper end of the other scissor foot support 1-3, and the lower surface of the key cap 1-1 is in contact with the upper end of the scissor foot support 1-3;

Press the keycap 1-1 down or pull the keycap 1-1 down and right, and the combination of the left side scissors anti-off structure over the left key limit structure, the key cap is installed.
The scissor-leg support mounting method of a key device according to claim 36, comprising: a key cap, a reset body, a switch circuit, and a scissor foot support, wherein the scissor foot support is respectively connected to the key cap and the support plate; One end of the scissor foot support 1-3 is provided with an end abutting portion, and the lower end of the scissor foot support 1-3 and the end abutting portion are provided with a lower scissors connecting portion, and the lower scissors connecting portion is closer The end abutting portion;

When the key cap 1-1 moves up and down between the upper limit position and the lower limit position, the end contact portions of the two scissor foot supports 1-3 are always kept in contact with each other, forming a force between the two scissor foot supports 1-3. Transfer and constitute a synchronous linkage support structure;

When the key device is in a natural state, the keycap 1-1 is in an upper limit position, and the upper limit angles of the scissor foot supports 1-3 with respect to the support plate 5-1 are respectively an angle and a b angle, in the reset Under the action of the body, the two scissor foot supports 1-3 are limited to the angles θ1 and θ2, where θ1=a+Δ degrees, θ2=b+△ degrees; the mating space openings of the keycap 1-1 are all directed to the inner side.