CN212750667U - Key structure and scissor-foot keyboard - Google Patents

Abstract

The application belongs to the technical field of input device, provides a button structure, includes: a thin film circuit board; the mounting seat is connected with the thin film circuit board, and a first accommodating cavity is formed around the mounting seat; the scissor foot assembly is arranged in the first accommodating cavity and comprises a first bracket and a second bracket which is rotatably connected to the outer side of the first bracket; the short shaft shell is connected with the mounting seat, covers the scissor leg assembly and is provided with a drawing limiting mechanism which is abutted against the outer side of the second support and is used for preventing the scissor leg assembly from falling off; can prevent the scissor foot components from falling apart.

Description

Key structure and scissor-foot keyboard

Technical Field

The application belongs to the technical field of input equipment, more specifically say, relate to a button structure and scissors foot keyboard.

Background

Keyboards are widely used as command and data input devices for electronic devices. With the continuous innovation of the technology and the continuous pursuit of the technological sense for electronic products, the keyboard structure is developing towards miniaturization and thinning, the current film type keyboard mainly takes a crater key structure and a scissor-foot key structure, and the crater key structure is easy to cause fatigue after long-term use due to long key stroke when being pressed, so that the application range is small; therefore, the scissors foot key structure is the most commonly used at present, but in the use process of the scissors foot key structure, the scissors foot structure is easy to scatter, so that the key structure is damaged, the service life of the scissors foot key structure is usually short, and the replacement frequency of a keyboard is high.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a key structure and scissors foot keyboard to solve the technical problem that the scissors foot structure is easy to be scattered in the prior art.

In order to achieve the purpose, the technical scheme adopted by the application on one hand is as follows: there is provided a key structure including: a thin film circuit board; the mounting seat is connected with the thin film circuit board, and a first accommodating cavity is formed around the mounting seat; the scissor foot assembly is arranged in the first accommodating cavity and comprises a first bracket and a second bracket which is rotatably connected to the outer side of the first bracket; the short shaft shell is connected with the mounting seat, covers the scissor leg assembly and is provided with a limiting drawing mechanism which is abutted against the outer side of the second support and used for preventing the scissor leg assembly from falling apart.

Optionally, the pull-limiting mechanism is a baffle formed by extending a partial region of the stub housing in the stroke direction of the stub housing.

Optionally, a first elastic element is arranged in the mounting seat, the stub axle housing has a first protruding portion extending along a stroke direction of the stub axle housing, and the first protruding portion abuts against the first elastic element when moving along the stroke direction of the stub axle housing, so that the first elastic element is elastically deformed and displaced.

Optionally, first elastic component include the elasticity section and with the canned paragraph that the elastic component links up, the canned paragraph inlays to be located in the mount pad, the elasticity section has first face and second face, first face with through the third rounding off connect and form the arc structure of indent between the second face, just first bellying follows support when the stroke direction of short axle casing removes and lean on so that the elasticity section takes place elastic deformation and drives the canned paragraph and sways.

Optionally, the short shaft housing includes a first engaging portion extending along a stroke direction of the short shaft housing and engaged with the mounting seat, and a free region corresponding to the first engaging portion is provided in the mounting seat, so that the first engaging portion has a degree of freedom along a stroke direction of the key cap in the free region.

Optionally, the key structure further includes a key cap, the key cap has a second accommodating cavity, a second engaging portion is disposed in the second accommodating cavity, and the short shaft housing is provided with a engaging portion adapted to the second engaging portion.

Optionally, a second elastic member is arranged in the first accommodating cavity, the second elastic member penetrates through an overhead area formed between the first support and the second support, one end of the second elastic member is connected with the short shaft shell, and the other end of the second elastic member is connected with the mounting seat.

Optionally, a third elastic member and a fourth elastic member are arranged in the first accommodating cavity;

the fourth elastic piece is electrically connected with the thin film circuit board, and a first conductive contact is arranged on the outer side of the fourth elastic piece;

one end of the third elastic piece is connected with the first support, the other end of the third elastic piece is connected with the mounting seat, a second conductive contact matched with the first conductive contact is arranged on the outer side of the third elastic piece, the third elastic piece is elastically deformed when the first support surrounds the first support and a rotating point between the second supports rotates, and the first conductive contact is in contact with the second conductive contact.

Optionally, a second protruding portion protruding in the stroke direction of the short shaft housing is disposed between the first bracket and the third elastic member, the top of the second protruding portion is connected with one end of the third elastic member, and one side of the second protruding portion is connected with the first bracket.

Optionally, the key structure further includes a hall element assembly or a light-to-tube element assembly;

the Hall element assembly comprises a magnet unit and a Hall element, a Hall element mounting seat which is matched and connected with the magnet unit is arranged in the short shaft shell, and the magnet unit is communicated or disconnected with the Hall element through the magnetic induction effect when the short shaft shell moves along the stroke direction of the short shaft shell.

Optionally, the key structure further comprises a light pipe element assembly;

the light-to-tube element assembly comprises a blocking block and light-to-tube elements which are arranged on two sides of the blocking block respectively, a blocking block inserting piece which is matched and connected with the blocking block is arranged in the short shaft shell, and the two light-to-tube elements are connected or disconnected with a light path when the short shaft shell moves along the stroke direction of the short shaft shell.

Another aspect of the present application employs a technical solution that: a scissor-foot keyboard is provided, which comprises a keyboard body and any one of the key structures arranged in the keyboard body.

The key structure provided by the embodiment of the application has the beneficial effects that:

compared with the prior art, the short axle casing of this application embodiment setting cover on locating scissors foot subassembly can prevent that lever structure from loosing at the stroke direction of short axle casing, and short axle casing has and supports and lean on the restriction drawing mechanism in the outside of second support limits the drawing mechanism and can prevent that scissors foot subassembly from taking place to loose the phenomenon in the perpendicular line direction of the stroke direction of short axle casing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a key structure according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a key structure according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a key cap according to an embodiment of the present application;

FIG. 4 is a schematic assembly view of a stub shaft housing and mounting socket provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a stub shaft housing provided in accordance with an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a mounting base according to an embodiment of the present application;

FIG. 7 is a schematic assembly diagram of a mounting base and first, third, and fourth elastic members according to an embodiment of the present application;

FIG. 8 is a schematic view of the assembly of the stub shaft housing and the first resilient member provided by an embodiment of the present application;

figure 9 is a schematic structural view of a first elastic member according to an embodiment of the present application,

FIG. 10 is a schematic view of an assembly of a scissor foot assembly, a third resilient member, and a fourth resilient member provided by an embodiment of the present application;

FIG. 11 is a schematic structural view of a third elastic member according to an embodiment of the present application;

FIG. 12 is a schematic view of an assembly of a first bracket and a second boss provided in an embodiment of the present application;

fig. 13 is a schematic structural diagram of a magnetic axis key structure according to an embodiment of the present application;

FIG. 14 is a schematic view of a mounting structure of the stub shaft housing, Hall element assembly and mounting cup provided by an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a stub shaft housing provided in accordance with an embodiment of the present application;

fig. 16 is a schematic structural diagram of an optical axis key structure according to an embodiment of the present application;

FIG. 17 is a schematic diagram illustrating a mounting structure of a stub shaft housing, an optical pair element package, a mounting base and a thin-film circuit board according to an embodiment of the present application;

FIG. 18 is a schematic diagram illustrating a mounting structure of a stub shaft housing, an optical pair element package, a mounting base and a thin film circuit board according to an embodiment of the present application;

FIG. 19 is a schematic structural diagram of a stub shaft housing provided in accordance with an embodiment of the present application;

wherein, in the figures, the respective reference numerals:

1-a thin film circuit board; 14-a welding port; 2-mounting a base; 21-mounting a support; 22-mounting a base; 23-a first containing cavity; 231-a first elastic member mount; 232-a second elastic member mounting seat; 233-third elastic member mount; 234-a fourth spring mount; 3-a scissor assembly; 31-a first scaffold; 32-a second bracket; 4-short shaft housing; 41-a baffle plate; 42-a first boss; 43-a snap-in part; 44-a first engaging portion; 45-a second spring receiving cavity; 46-hall element mount; 47-a shutter block insert; 5-a first elastic member; 51-an elastic segment; 511-a first side; 512-a second face; 513-third side; 52-a fixed segment; 6-key cap; 61-a second containing cavity; 62-a second engaging portion; 7-a second elastic member; 8-a third elastic member; 81-a second conductive contact; 9-a fourth elastic member; 91-a first conductive contact; 10-a second boss; 11-a hall element assembly; 111-a magnet unit; 112-a hall element; 12-a light pipe element assembly; 13-fixing the plate.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

An aspect of an embodiment of the present application provides a key structure.

Referring to fig. 1 to 2, which respectively show schematic structural diagrams of a key structure, the key structure includes:

a thin film circuit board 1; the mounting seat 2 is connected with the thin film circuit board 1, and a first accommodating cavity 23 is formed around the mounting seat; the scissor foot assembly 3 is arranged in the first accommodating cavity 23 and comprises a first bracket 31 and a second bracket 32 which is rotatably connected to the outer side of the first bracket 31, and the first bracket 31 and the second bracket 32 form a lever structure; and the short shaft shell 4 is connected with the mounting seat 2, covers the scissor leg assembly 3 and is provided with a drawing limiting mechanism which is abutted against the outer side of the second bracket 32 and is used for preventing the scissor leg assembly 3 from falling apart.

The short axle casing 4 on scissors foot subassembly 3 is located to the setting cover of this application embodiment, can prevent that lever structure from loosing at the stroke direction of short axle casing, and short axle casing 4 has and supports and lean on the restriction pulling mechanism in the outside of second support 32 limits the pulling mechanism and can prevent that scissors foot subassembly 3 from taking place to loose the phenomenon in the perpendicular line direction of the stroke direction of short axle casing.

The stroke direction of the short shaft shell is the stroke direction of the short shaft shell 4 and is the direction in which the keycap is displaced in the process of being pressed or resetting.

Referring to fig. 5, a perspective view and a top view of the short shaft housing 4 are respectively shown; in a specific installation example, the pull-limiting mechanism may be configured as a baffle 41 formed by extending a partial region of the short axle housing 4 along the stroke direction of the short axle housing 4, specifically, the baffle 41 may be configured in the stroke direction of the short axle housing 4 for the region of the short axle housing 4 located at the fulcrum position of the lever structure, and two baffles 41 are correspondingly configured at the fulcrum positions on two sides, respectively, so as to prevent the lever structure from falling apart. Of course, the limiting drawing mechanism can also be set as a cavity area formed by extending the partial area of the short shaft shell 4 along the stroke direction of the short shaft shell 4, the external contour of the cavity area is matched with the external contour of the scissor leg assembly 3, the lever structure is prevented from falling apart in each direction, and a certain stroke gap is required for the scissor leg assembly 3 due to the arrangement of the cavity area, so that the scissor leg assembly 3 can swing conveniently.

The specific structure of the mounting seat 2 is as follows:

referring to FIG. 4, FIG. 4 shows a schematic assembly of stub axle housing 4 and mount 2; install seat 2 and short axle housing 4 between be connected, and install seat 2 need give short axle housing 4 the degree of freedom of movement in 4 stroke direction of short axle housing, and short axle housing 4 can carry out the up-and-down motion, reaches the purpose that can press the button and the button resumes, and need form spacingly in the stroke direction of short axle housing 4, prevents 4 slippage mount seats 2 of short axle housing, prevents to cause the button structure to scatter.

The mounting base 2 can be a split structure and comprises a mounting support member 21 and a mounting base 22 connected with the mounting support member 21, wherein a first accommodating cavity 23 is formed by surrounding the periphery of the mounting base 2, namely the first accommodating cavity 23 is formed by surrounding the periphery of the mounting base 22;

referring to fig. 2 and 4, short axle housing 4 includes a first engaging portion 44 extending along a stroke direction of short axle housing 4 and engaging with mounting base 2. Specifically, the first engaging portion 44 is engaged with the mounting support 21, a free end of the first engaging portion 44 extends into the mounting base 22, the mounting base 22 is provided with a corresponding free area corresponding to the first engaging portion 44, the first engaging portion 44 has a degree of freedom in the free area along the stroke direction of the keycap 6, and the arrangement of the first engaging portion 44 enables the keycap 6 to be pressed or reset, so as to drive the stub axle housing 4 to move.

Referring to fig. 6 to 8, fig. 6 is a schematic top view and a schematic perspective view of the mounting base 2; fig. 7 shows a schematic assembly of the mount 2 and the first, third and fourth elastic members 5, 8, 9; FIG. 8 shows a schematic assembly of stub axle housing 4 and first resilient member 5; the first accommodating cavity 23 is internally provided with a first elastic piece 5, the short shaft shell 4 is provided with a first protruding part 42 extending along the stroke direction of the short shaft shell 4, and the first protruding part 42 abuts against the first elastic piece 5 when moving along the stroke direction of the short shaft shell 4, so that the first elastic piece 5 is elastically deformed and displaced.

Referring to fig. 9, fig. 9 respectively shows a schematic structural diagram of the first elastic element 5, specifically, the first elastic element 5 includes an elastic section 51 and a fixed section 52, the elastic section 51 is connected with the fixed section 52, the fixed section 52 is disposed in the mounting base 2, the elastic section 51 has a first surface 511 and a second surface 512, the first surface 511 is connectable with the fixed section 52, the first surface 511 is smoothly transited to the second surface 512 through a third surface 513, a concave arc structure is formed among the first surface 511, the second surface 512 and the third surface 513, and the first protrusion 42 abuts against the first surface 511 when moving along the stroke direction of the short shaft housing 4 to elastically deform the elastic section 51 and drive the fixed section 52 to swing.

Referring to fig. 7, in order to install the first elastic element 5, a first elastic element installation seat 231 is further disposed in the first accommodation cavity 23 of the installation seat 2; the fixing segment 52 may be embedded in the first elastic member mounting seat 231.

When the key cap 6 is pressed, the first protrusion 42 of the stub shaft housing 4 abuts against the first surface 511, the elastic section 51 is elastically deformed, and the fixing section 52 is embedded in the mounting seat 2, is displaced in the first elastic member mounting seat 231, and swings toward the elastic section 51; the keycap 6 is reset, the elastic section 51 is deformed, and the fixed section 52 swings away from the elastic section 5; in the process of up-and-down movement of the keycap 6, the elastic section 51 is deformed and reset, the elastic section 51 swings, mechanical paragraph feeling and mechanical sound are generated, and rhythm feeling is strong.

The first elastic piece 5 can also be arranged into a torsion spring structure, so that the purposes of being contractible during pressing and being capable of recovering deformation without thrust are achieved.

Referring to fig. 2, 5 and 6, a second elastic element 7 is disposed in the first accommodating cavity 23, the second elastic element 7 penetrates through an overhead area formed between the first bracket 31 and the second bracket 32, one end of the second elastic element 7 is connected to the short shaft housing 4, and the other end is connected to the mounting base 2. The second elastic member 7 may be a return spring, or may be other elastic elements, such as an elastic sheet, and is not limited in particular. After pressing key cap 6, second elastic component 7 receives pressure and is compressed and produce deformation, and after key cap 6 no longer received pressure, second elastic component 7 resumes deformation, drives key cap 6 and resets.

In order to facilitate assembling the second elastic element 7, a second elastic element accommodating cavity 45 adapted to the second elastic element 7 may be further disposed in the short shaft housing 4, and a second elastic element mounting seat 232 adapted to the second elastic element 7 may be further disposed in the mounting seat 2.

Referring to fig. 1, 2 and 3, fig. 3 shows a schematic structural diagram of a key cap 6; in the above embodiments, the key structure further includes a key cap 6, the key cap 6 has a second accommodating cavity 61, a second engaging portion 62 is disposed in the second accommodating cavity 61, and the short shaft housing 4 is provided with a engaging portion 43 adapted to the second engaging portion 62.

Specifically, second block portion 62 can be opened and be equipped with the recess, seted up on the short axle casing 4 with the joint portion 43 of second block portion 62 looks adaptation, joint portion 43 can include the horizontal pole, the horizontal pole inlays to be located in the recess.

In the above embodiments, the film circuit board 1 may be formed with a soldering opening 14 for soldering the mounting base 2 to the film circuit board 1.

In the above embodiments, a fixing plate 13 may be further disposed between the mounting base 2 and the thin film circuit board 1 for fixing the mounting base 2.

The key structure described in the above embodiments is suitable for assembling different keyboards such as a mechanical axis keyboard, an optical axis keyboard or a magnetic axis keyboard, and can be freely assembled according to user requirements.

Referring to fig. 2, 7, 10 and 11, fig. 10 is a schematic assembly view of the scissor assembly 3, the third elastic member 8 and the fourth elastic member 9; fig. 11 shows a schematic structural view of the third elastic member 8; when the mechanical axis keyboard is assembled, a third elastic element 8 and a fourth elastic element 9 can be further arranged in the first accommodating cavity 23 of the mounting seat 2;

the fourth elastic element 9 is electrically connected with the thin film circuit board 1, and a first conductive contact 91 is arranged on the outer side of the fourth elastic element 9;

one end of the third elastic element 8 is connected with the first support 31, the other end of the third elastic element is connected with the mounting base 2, a second conductive contact 81 matched with the first conductive contact 91 is arranged on the outer side of the third elastic element 8, when the first support 31 rotates and swings around a rotation point between the first support 31 and the second support 32, namely a fulcrum of a lever structure, for example, when the first support 31 rotates and swings anticlockwise, the first support 31 can drive the third elastic element 8 to generate elastic deformation, and the first conductive contact 91 is contacted with the second conductive contact 81, so that a circuit is switched on; when the first bracket 31 rotates and swings in the opposite direction, the third elastic member 8 recovers its shape, and the first conductive contact 91 is separated from the second conductive contact 81, and the power is cut off.

Specifically, one end of the third elastic element 8 may be connected to the first bracket 31 in an abutting manner, and one end of the third elastic element 8 is structurally separated from the first bracket 31; when the first support 31 rotates anticlockwise, the third elastic part 8 is pushed to generate elastic deformation to realize circuit conduction, when the first support 31 rotates in the opposite direction, the first support 31 and the third elastic part 8 are not in contact, and the third elastic part 8 automatically recovers deformation under the condition of no thrust to realize circuit disconnection.

One end of the third elastic element 8 can also be embedded in the first bracket 31, and when the first bracket 31 rotates, the third elastic element 8 is driven to elastically deform or recover to deform, so that the circuit is switched on or off.

Both of the above two manners can realize that the third elastic element 8 is pushed to be elastically deformed during the rotation of the first bracket 31, and the specific connection manner of the third elastic element 8 and the first bracket 31 is not particularly limited.

One end of each of the third elastic element 8 and the fourth elastic element 9 may respectively extend out of the thin film circuit board 1, and the thin film circuit board 1 is correspondingly provided with a welding opening 14, so as to weld the third elastic element 8 and the fourth elastic element 9 on the thin film circuit board 1.

Referring to fig. 10 and 12 together, fig. 12 is an assembly view of the first bracket 31 and the second boss 10; specifically, in order to facilitate assembling of the third elastic member 8 and the scissor-foot assembly 3, a second protrusion 10 protruding in the stroke direction of the short-axle housing 4 may be disposed between the first bracket 31 and the third elastic member 8, a top of the second protrusion 10 is connected to one end of the third elastic member 8, and one side of the second protrusion 10 is connected to the first bracket 31. The connection mode of the second convex part 10 and the third elastic part 8 can be butt joint or fixed connection, etc.; when the first bracket 31 rotates around the fulcrum of the lever structure, the second protruding part 10 is driven to rotate, the third elastic part 8 is pushed to generate elastic deformation, the first conductive contact 91 contacts the second conductive contact 81, and the circuit is conducted; when the first bracket 31 rotates in the opposite direction, the second protrusion 10 is driven to rotate in the opposite direction, the third elastic element 8 recovers deformation, the first conductive contact 91 is separated from the second conductive contact 81, and the circuit is disconnected. As an example, the second protrusion 10 may be provided as an integral structure with the third elastic member 8, and the second protrusion 10 may also be provided as an integral structure with the first bracket 31.

In order to facilitate the installation of the third elastic element 8 and the fourth elastic element 9, a third elastic element installation seat 233 adapted to the third elastic element 8 and a fourth elastic element installation seat 234 adapted to the fourth elastic element 9 may be disposed in the first accommodation cavity 23 of the installation seat 2.

Referring to fig. 13, 14 and 15 together, fig. 13 shows a structural schematic diagram of the magnetic axis key structure, fig. 14 shows an installation structural schematic diagram of the short axis housing 4, the hall element assembly 11 and the mounting base 2, and fig. 15 shows a structural schematic diagram of the short axis housing 4; wherein the hall element assembly 11 includes a magnet unit 111 and a hall element 112.

In order to facilitate the assembly of the magnetic shaft structure, the short shaft housing 4 is further provided with a hall element mounting seat 462 matched with the magnet unit 111, and the short shaft housing 4 moves along the stroke direction of the short shaft housing 4 to drive the magnet unit and the hall switch unit to be powered on or powered off through the magnetic induction effect.

Referring to fig. 16 to 19 together, fig. 16 shows a structural schematic diagram of the optical axis key structure, fig. 17 and 18 respectively show an installation structural schematic diagram of the stub shaft housing 4, the optical pair tube element assembly 12, the mounting base 2 and the thin film circuit board 1, and fig. 19 shows a structural schematic diagram of the stub shaft housing 4;

in order to facilitate the assembly of the optical axis structure, the stub housing 4 is further provided with a shielding block insert 47 adapted to the optical pair element assembly 12, wherein the optical pair element assembly 12 comprises a shielding block and optical pair elements respectively arranged at two sides of the shielding block, the shielding block is used for shielding light rays of the optical pair elements, and the shielding block is adapted to the shielding block insert 47; the short shaft shell 4 moves along the stroke direction of the short shaft shell 4 to drive the blocking piece to move along the stroke direction of the short shaft shell 4, the stroke direction of the short shaft shell 4 comprises an upward direction or a downward direction, when the blocking piece moves upwards, light rays between the light pair tube elements are not blocked, a light path is conducted, and electrification is achieved; when the shielding block moves downwards, light between the light pipe elements is shielded, and power failure is realized.

Each part detachable sets up in above-mentioned each embodiment, and the equipment is convenient, and overall structure is simple.

Yet another aspect of the present application provides a scissors foot keyboard comprising: the keyboard comprises a keyboard body and the key structure arranged on the keyboard body.

Yet another aspect of the present application provides an electronic device including a device body and a scissors foot keyboard installed in the device body. The electronic device can be a notebook computer, a desktop computer, a super mobile computer, a handheld electronic device, and the like, and the specific form of the electronic device is not limited herein, and the operating instruction or data can be input through a keyboard; the electronic device is limited to be pulled out due to the scissor assemblies 3, so that the failure rate is low, the service life of the keyboard is long, mechanical paragraph feeling is realized during pressing, and the pressing rhythm feeling is strong.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (12)

1. A key structure, comprising:

a thin film circuit board;

the mounting seat is connected with the thin film circuit board, and a first accommodating cavity is formed around the mounting seat;

the scissor foot assembly is arranged in the first accommodating cavity and comprises a first bracket and a second bracket which is rotatably connected to the outer side of the first bracket;

the short shaft shell is connected with the mounting seat, covers the scissor leg assembly and is provided with a limiting drawing mechanism which is abutted against the outer side of the second support and used for preventing the scissor leg assembly from falling apart.

2. The key structure of claim 1, wherein the pull-limiting mechanism is a baffle formed by a partial region of the stub housing extending in a stroke direction of the stub housing.

3. The key structure of claim 1, wherein a first elastic member is disposed in the mounting seat, the stub shaft housing has a first protruding portion extending in a stroke direction of the stub shaft housing, and the first protruding portion abuts against the first elastic member to elastically deform and displace the first elastic member when moving in the stroke direction of the stub shaft housing.

4. The key structure of claim 3, wherein the first elastic member includes an elastic section and a fixed section connected to the elastic member, the fixed section is embedded in the mounting seat, the elastic section has a first surface and a second surface, the first surface and the second surface are connected by a smooth transition of a third surface to form an inwardly concave arc structure, and the first protrusion abuts against the first surface when moving along the stroke direction of the short shaft housing to elastically deform the elastic section and drive the fixed section to swing.

5. The key structure of claim 1, wherein the stub axle housing includes a first engaging portion extending along a stroke direction of the stub axle housing and engaging with the mounting seat, and a free area corresponding to the first engaging portion is disposed in the mounting seat, so that the first engaging portion has a degree of freedom along a stroke direction of the key cap in the free area.

6. The key structure of claim 1, further comprising a key cap, wherein the key cap has a second cavity, the second cavity has a second engaging portion, and the short shaft housing has a engaging portion adapted to the second engaging portion.

7. The key structure of claim 1, wherein a second elastic member is disposed in the first accommodating cavity, the second elastic member is inserted into an overhead area formed between the first bracket and the second bracket, and one end of the second elastic member is connected to the stub axle housing and the other end is connected to the mounting base.

8. The key structure of claim 1, wherein a third elastic member and a fourth elastic member are disposed in the first accommodating cavity;

the fourth elastic piece is electrically connected with the thin film circuit board, and a first conductive contact is arranged on the outer side of the fourth elastic piece;

one end of the third elastic piece is connected with the first support, the other end of the third elastic piece is connected with the mounting seat, a second conductive contact matched with the first conductive contact is arranged on the outer side of the third elastic piece, the third elastic piece is elastically deformed when the first support surrounds the first support and a rotating point between the second supports rotates, and the first conductive contact is in contact with the second conductive contact.

9. The key structure of claim 8, wherein a second protrusion protruding in a stroke direction of the stub shaft housing is disposed between the first bracket and the third elastic member, a top of the second protrusion is connected to one end of the third elastic member, and one side of the second protrusion is connected to the first bracket.

10. The key structure of claim 1, wherein the key structure further comprises a hall element assembly or a light-to-tube element assembly;

the Hall element assembly comprises a magnet unit and a Hall element, a Hall element mounting seat which is matched and connected with the magnet unit is arranged in the short shaft shell, and the magnet unit is communicated or disconnected with the Hall element through the magnetic induction effect when the short shaft shell moves along the stroke direction of the short shaft shell.

11. The key structure of claim 1, wherein the key structure further comprises a light pipe element assembly;

the light-to-tube element assembly comprises a blocking block and light-to-tube elements which are arranged on two sides of the blocking block respectively, a blocking block inserting piece which is matched and connected with the blocking block is arranged in the short shaft shell, and the two light-to-tube elements are connected or disconnected with a light path when the short shaft shell moves along the stroke direction of the short shaft shell.

12. A scissor-foot keyboard, comprising a keyboard body and the key structure of any one of claims 1 to 11 installed in the keyboard body.

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