CN219800713U

CN219800713U - Long key structure of scissors foot

Info

Publication number: CN219800713U
Application number: CN202320635841.4U
Authority: CN
Inventors: 黄勇超
Original assignee: Gtech Technology Ltd
Current assignee: Gtech Technology Ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-10-03
Anticipated expiration: 2033-03-28

Abstract

The utility model aims to provide a scissors foot long key structure which has compact structure, is convenient and quick to assemble, does not need to be provided with a balance bar and can ensure motion balance. The utility model comprises a metal bottom plate, a film circuit board, an elastic element, a scissor assembly and a key cap which are sequentially arranged from bottom to top, wherein the scissor assembly comprises an X-shaped outer bracket and an X-shaped inner bracket, the X-shaped outer bracket and the X-shaped inner bracket are in cross connection to form an X-shaped structure, at least three groups of rotating shafts are respectively arranged at the lower end of the X-shaped outer bracket and the upper end of the X-shaped inner bracket and are respectively in rotating fit with the metal bottom plate and the key cap, at least two groups of sliding shafts are respectively arranged at the upper end of the X-shaped outer bracket and the lower end of the X-shaped inner bracket and are respectively in sliding fit with the key cap and the metal bottom plate, and when external force acts on the key cap, the scissor assembly is driven to rotate, and the elastic element is in pressing fit with the film circuit board. The utility model is applied to the technical field of key switches.

Description

Long key structure of scissors foot

Technical Field

The utility model is applied to the technical field of key switches, and particularly relates to a long key structure of a scissors foot.

Background

With the continuous development of information technology, keyboards have become one of the classical input devices of computers, notebooks, tablet computers, mobile phones, etc. Different key caps with different sizes and lengths are usually designed on a keyboard so as to meet the ergonomic requirement, and in order to ensure that the four corners of a long key are pressed normally and have better hand feeling, the traditional scissors feet are often designed with one or more than one balance bar and one or two pairs of scissors foot assemblies on the long key, however, the assembly parts are more, the production and the assembly are more troublesome, the assembly method of the balance bars is more complex, and the assembly cost and the reject ratio are higher. The chinese patent publication No. CN214477084U discloses a key with noise reduction function and a computer with the key, under the action of external force, the keycap drives the balance member to move towards the direction close to the iron plate, and further drives the first scissor leg and the second scissor leg to rotate relatively and make the elastic member in a compressed state until the elastic member contacts with the matching structural member and does not deform. However, the balancing piece has the function of enabling the left and right scissor assemblies to generate linkage and smoothly and simultaneously move to the opposite directions so as to obtain good pressing handfeel. The size of the scissor legs is limited due to the existence of the balancing piece, the force arms of the scissor legs are deformed to be shorter, and the elastic deformation is increased. Therefore, it is necessary to provide a long-leg key structure of scissors, which has a compact structure, is convenient and quick to assemble, does not need to provide a balance bar, and can ensure motion balance.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a scissors foot long key structure which has compact structure, is convenient and quick to assemble, does not need to be provided with a balance bar and can ensure motion balance.

The technical scheme adopted by the utility model is as follows: the utility model comprises a metal bottom plate, a thin film circuit board, an elastic element, a scissor assembly and a key cap which are sequentially arranged from bottom to top, wherein the scissor assembly comprises an X-shaped outer support and an X-shaped inner support, the X-shaped outer support and the X-shaped inner support are in cross connection to form an X-shaped structure, at least three groups of rotating shafts are respectively arranged at the lower end of the X-shaped outer support and the upper end of the X-shaped inner support and are respectively in rotating fit with the metal bottom plate and the key cap, at least two groups of sliding shafts are respectively arranged at the upper end of the X-shaped outer support and the lower end of the X-shaped inner support and are respectively in sliding fit with the key cap and the metal bottom plate, and when external force acts on the key cap, the scissor assembly is driven to rotate by the key cap, and the elastic element is in pressing fit with the thin film circuit board.

It can be seen from the above scheme that the long button structure of scissors foot has simplified the design structure, need not to set up the balance bar, the scissors foot subassembly unites two into one, X shape outer support with X shape inner support cross connection forms X shape structure, X shape outer support with X shape inner support is all through the sliding shaft the axis of rotation realizes rotating, the axis of rotation is as pivoted back shaft, the sliding shaft is as pivoted loose axle, when pressing key cap one end, can use the other end to produce simultaneously and connect and move. The traditional scissor X-shaped inner bracket generally comprises a sliding shaft, a rotating shaft and a middle shaft which are respectively a pair; in addition, the traditional scissor X-shaped outer support generally comprises a pair of sliding shafts, a rotating shaft and a center shaft hole. The X-shaped inner support and the X-shaped outer support of the long key structure of the scissors are provided with four groups of rotating shafts and two groups of sliding shafts, and the increase of connecting points is beneficial to strengthening the overall strength of the metal bottom plate, the scissors assembly and the key cap, the connecting points in the middle are increased, the influence of deformation of the middle part is reduced, and the overall torsion is increased. The size of the scissor assembly is larger, and the arm of force of the scissor is longer and the elastic deformation is larger on the premise that the thickness of the scissor material is unchanged. In order to solve the problem, the number of the sliding shafts and the rotating shafts is increased on the basis of the traditional long keys of the scissors, the length of the arm of force of the scissors is shortened, and the elastic deformation is reduced, so that the motion balance is ensured, and the hand feeling is better when four corners or two ends are pressed.

The utility model discloses a key cap structure, X shape outer support, the key cap, the spring element, the mounting groove, the X shape inner support is the concave structure, the both ends all are provided with the axis about X shape inner support projecting end, the axis with mounting groove normal running fit, the X shape inner support is followed the axis is in the rotation hole rotates.

One preferable scheme is, the metal bottom plate with the key cap all is provided with rotation buckle and slip buckle, the rotation buckle that the metal bottom plate corresponds with the rotation buckle that the key cap corresponds all is located same one side, the slip buckle that the metal bottom plate corresponds with the slip buckle that the key cap corresponds all is located same one side, the axis of rotation with rotation buckle normal running fit, the sliding shaft with slip buckle sliding fit.

The thin film circuit board is provided with a conducting switch, the elastic element is of an H-shaped structure, the upper end and the lower end of the elastic element are both used as connecting support parts, the bottom of the middle end of the elastic element is provided with a pressing column, and when the key cap is pressed on the elastic element, the pressing column is in contact fit with the conducting switch.

The rotary buckle is provided with a round hole structure with an opening shape, the rotary shaft is in rotary fit in the round hole structure, the sliding buckle is provided with a U-shaped block arranged sideways, and the sliding shaft is in sliding fit with the flush end of the U-shaped block.

Drawings

FIG. 1 is an exploded perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic perspective view of the X-shaped outer bracket;

FIG. 4 is a schematic perspective view of the X-shaped inner bracket;

FIG. 5 is a schematic perspective view of the key cap;

FIG. 6 is a schematic perspective view of the metal base plate;

FIG. 7 is a cross-sectional view of the resilient member and the thin film circuit board;

fig. 8 is a perspective exploded view of a conventional structure.

Detailed Description

As shown in fig. 1 to 4, in this embodiment, the present utility model includes a metal base plate 1, a thin film circuit board 2, an elastic element 3, a scissor leg assembly 4 and a keycap 5 sequentially disposed from bottom to top, where the scissor leg assembly 4 includes an X-shaped outer support 6 and an X-shaped inner support 7, the X-shaped outer support 6 and the X-shaped inner support 7 are cross-connected to form an X-shaped structure, at least three sets of rotation shafts 8 are disposed at the lower end of the X-shaped outer support 6 and the upper end of the X-shaped inner support 7, respectively, are in running fit with the metal base plate 1 and the keycap 5, at least two sets of sliding shafts 9 are disposed at the upper end of the X-shaped outer support 6 and the lower end of the X-shaped inner support 7, respectively, and are in sliding fit with the keycap 5 and the metal base plate 1, and when an external force acts on the keycap 5, the scissor leg assembly 4 is driven to rotate, the elastic element 3 is in pressing fit with the thin film circuit board 2. The left and right included angles of the X-shaped outer support 6 and the X-shaped inner support 7 are rotation included angles, the rotation shaft 8 is used as a rotation supporting shaft, the sliding shaft 9 is used as a rotation movable shaft, when the key cap 5 is pressed by external force, the angle of the rotation included angles is gradually reduced, the elastic element 3 is driven to elastically deform, and the elastic element 3 is in contact fit with the signal end of the film circuit board 2, so that signal input is completed.

As shown in fig. 4, in this embodiment, the middle end of the X-shaped outer support 6 is provided with a avoidance hole 10, the elastic element 3 passes through the avoidance hole 10 and is connected with the key cap 5, two ends of the X-shaped outer support 6 are provided with rotation holes 11, the left and right ends of the rotation holes 11 are provided with mounting grooves 12, the X-shaped inner support 7 is in a concave structure, the left and right ends of the protruding end of the X-shaped inner support 7 are provided with middle shafts 13, the middle shafts 13 are in running fit with the mounting grooves 12, and the X-shaped inner support 7 rotates along the middle shafts 13 in the rotation holes 11. The avoiding hole 10 is used for installing the elastic element 3, and the installation groove 12 plays a role in positioning the middle shaft 13.

As shown in fig. 2, 5 and 6, in this embodiment, the metal base plate 1 and the key cap 5 are respectively provided with a rotating buckle 14 and a sliding buckle 15, the rotating buckle 14 corresponding to the metal base plate 1 and the rotating buckle 14 corresponding to the key cap 5 are both located on the same side, the sliding buckle 15 corresponding to the metal base plate 1 and the sliding buckle 15 corresponding to the key cap 5 are both located on the same side, the rotating shaft 8 is in running fit with the rotating buckle 14, and the sliding shaft 9 is in sliding fit with the sliding buckle 15.

As shown in fig. 7, in this embodiment, the thin film circuit board 2 is provided with a conducting switch 16, the elastic element 3 has an H-shaped structure, the upper end and the lower end of the elastic element 3 are both used as connection support portions, the bottom of the middle end of the elastic element 3 is provided with a pressing post 17, and when the key cap 5 is pressed on the elastic element 3, the pressing post 17 is in contact fit with the conducting switch 16. When the key cap 5 is pressed, the elastic member 3 is elastically deformed, and the pressing post 17 moves downward. When the pressing post 17 presses to the conduction switch 16, the line is conducted. When the pressing force for pressing the key cap 5 is removed, the elastic element 3 is elastically deformed and reset, the pressing column 17 moves upwards, and the on switch 16 is turned off, so that one input is completed.

In this embodiment, the rotary buckle 14 corresponding to the key cap 5 is provided with a circular hole structure with an opening, the rotary shaft 8 is in the circular hole structure in a rotary fit manner, the sliding buckle 15 corresponding to the key cap 5 is provided with a U-shaped block arranged sideways, and the sliding shaft 9 is in sliding fit with the flush end of the U-shaped block. When the key cap 5 is pressed by external force, the rotating shaft 8 provides rotating support for the rotation of the scissor assembly 4, the sliding shaft 9 slides along a straight line on the parallel and level end of the U-shaped block, the left and right included angles of the X-shaped outer support 6 and the X-shaped inner support 7 are gradually reduced, and the elastic element 3 is driven to elastically deform.

As shown in fig. 8, the long key structure of the conventional structure scissors foot comprises a metal bottom plate 1, a thin film circuit board 2, an elastic element 3, a key cap 5, a scissors foot assembly 4, two groups of scissors foot modules 21 and two symmetrically arranged balance bars 20, wherein the two groups of scissors foot modules 21 are respectively and correspondingly arranged at the left end and the right end of the balance bars 20, the conventional inner support of the scissors foot generally comprises a sliding shaft, a rotating shaft and a middle shaft which are respectively and correspondingly arranged, the middle section of the balance bars 20 is not provided with a connecting point, the middle part of the balance bars 20 is easy to deform, and the effect of the balance bars 20 is that the left end and the right end of the scissors foot modules 21 are linked, and are stable and synchronously moved, so that good pressing hand feeling is obtained. If the balance bar 20 is not used, the left and right scissors modules 21 and 21 cannot move synchronously and smoothly. The pressing force is applied to one end or one corner of the film circuit board 2, and the other end or other three corners of the film circuit board 2 are unbalanced, so that the pressing hand feel is poor, and even the elastic element can not trigger the switch on the film circuit board 2, the input function can not be realized, the size of the scissor legs is limited due to the existence of the balance bar 20, the force arm of the scissor legs is shorter, and the elastic deformation is increased.

Claims

1. A scissors foot long key structure is characterized in that: the novel scissors comprise a metal bottom plate (1), a thin film circuit board (2), an elastic element (3), a scissors foot assembly (4) and a key cap (5), wherein the scissors foot assembly (4) comprises an X-shaped outer support (6) and an X-shaped inner support (7), the X-shaped outer support (6) and the X-shaped inner support (7) are in cross connection to form an X-shaped structure, at least three groups of rotating shafts (8) are respectively arranged at the lower end of the X-shaped outer support (6) and the upper end of the X-shaped inner support (7), the rotating shafts are respectively matched with the metal bottom plate (1) and the key cap (5) in a rotating mode, at least two groups of sliding shafts (9) are respectively arranged at the upper end of the X-shaped outer support (6) and the lower end of the X-shaped inner support (7) and are respectively matched with the key cap (5), and when external force acts on the key cap (5), the key cap (5) drives the scissors foot assembly (4) to rotate, and the elastic element (3) is matched with the thin film circuit board (2) in a sliding mode.

2. The scissors long key structure according to claim 1, wherein: the utility model discloses a novel anti-theft device for the bicycle is characterized in that an avoidance hole (10) is formed in the middle end of an X-shaped outer support (6), the top of an elastic element (3) penetrates through the avoidance hole (10) and is connected with a key cap (5), rotating holes (11) are formed in the two ends of the X-shaped outer support (6), mounting grooves (12) are formed in the left end and the right end of the rotating holes (11), an X-shaped inner support (7) is of a concave structure, a middle shaft (13) is arranged at the left end and the right end of the protruding end of the X-shaped inner support (7), the middle shaft (13) is in running fit with the mounting grooves (12), and the X-shaped inner support (7) rotates along the middle shaft (13) in the rotating holes (11).

3. The scissors long key structure according to claim 1, wherein: the utility model discloses a key cap, including metal bottom plate (1), key cap (5), sliding shaft (9), metal bottom plate (1) with key cap (5) is provided with rotation buckle (14) and sliding buckle (15) with all be provided with of metal bottom plate (1) with rotation buckle (5), rotation buckle (14) normal running fit, sliding shaft (9) with sliding buckle (15) sliding fit.

4. The scissors long key structure according to claim 1, wherein: be provided with on film circuit board (2) and switch (16), elastic component (3) are H shape structure, the upper and lower end of elastic component (3) all is as connecting support position, the bottom of elastic component (3) middle-end is provided with presses post (17), works as key cap (5) press in when elastic component (3), press post (17) with switch (16) contact cooperation.

5. A scissors long key structure according to claim 3, wherein: the rotary buckle (14) is provided with a round hole structure with an opening, the rotary shaft (8) is in rotary fit in the round hole structure, the sliding buckle (15) is provided with a U-shaped block arranged sideways, and the sliding shaft (9) is in sliding fit with the flush end of the U-shaped block.