CN213691838U - Key switch with backlight structure and keyboard with scissor-leg structure - Google Patents

Abstract

The utility model provides a keyboard of key switch and scissors foot structure of structure is shaded, one of them key switch of structure is shaded includes the bottom plate, from bottom to top sets up trigger, pressing member, scissors foot structure and key cap on the bottom plate, its characterized in that, and the bottom plate is transparent material. By implementing the technical scheme of the utility model, the technical problems of great change of the structure of the scissor feet and great cost increase caused by adding the backlight component in the prior art can be solved; implement the technical scheme of the utility model, through setting up the bottom plate into transparent material for can no longer need introduce the leaded light sheet layer, therefore can be with the more frivolous of the preparation of non-light tight button structure of needs.

Description

Key switch with backlight structure and keyboard with scissor-leg structure

Technical Field

The utility model relates to a keyboard structure of electronic product, in particular to keyboard of key switch and scissors foot structure of structure is shaded.

Background

The key switch is a switch widely used in our lives, and the key switch is widely applied to a keyboard, the keyboard is an input device of a computer or an electronic product with the same function as the computer, characters can be input through the keyboard, and the operation of the computer can also be controlled. With the rapid development and wide application of electronic products, the keyboard is used as a bridge for human-computer interaction and occupies an important position in daily life and work.

The structure of the ultrathin keyboard products in the market at present is common in three types, namely a membrane switch type keyboard, a conductive silica gel switch type keyboard and a mechanical switch type keyboard. Among the three types of keyboards, the membrane switch type keyboard is most commonly used. The membrane switch type keyboard is divided into a volcano structure, a scissor leg structure and a palace column structure according to the structure of keys. The SCISSOR-leg structure membrane switch keyboard is mostly used in a notebook computer keyboard due to the product thickness, the SCISSOR-leg structure is also called as an X structure and is called as SCISSOR, and the working principle is as follows: the two groups of parallel four-bar linkage mechanisms are used, so that a user can enjoy smooth and consistent hand feeling when pressing four corners of the keyboard in a forced motion mode, and the light plastic steel material has a firm structure and better durability than a common keyboard. The design of the scissor structure is mostly used for notebook computers and ultrathin PC computer keyboards. Two groups of connecting rod structure supporting frames similar to scissors are adopted between the keycap and the base, the key stroke is about 2.50 mm-3.0 mm generally, the design can enable fingers of a user to be stressed on the keycap uniformly, and each key can obtain the same hand feeling.

In order to enable a user to obtain a better experience, a backlight assembly is often required to be additionally added to add a light source guide for the keycap, and the traditional scissor-foot structure keyboard needs to be additionally added with more backlight assemblies, which results in higher cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present invention discloses a key switch with a backlight structure, and the technical solution of the present invention is implemented as follows:

the key switch with the backlight structure comprises a bottom plate, and a trigger piece, a pressing piece, a scissor-leg structure and a keycap which are arranged on the bottom plate from bottom to top, wherein the bottom plate is made of transparent materials.

Preferably, the backlight module further comprises a backlight light source disposed in the bottom plate or on an upper side or a lower side of the bottom plate.

Preferably, the backlight light source is an LED dot matrix light source disposed on the flexible circuit board.

Preferably, the light-reflecting layer is arranged on the bottom surface of the base plate, and the light-reflecting layer is used for reflecting light rays from the direction of the base plate.

Preferably, the trigger is a conductive film, and the conductive film is disposed between the bottom plate and the pressing member.

Preferably, the pressing piece is conductive silica gel particles.

Preferably, the middle part of the scissor foot structure is a hollow part, the pressing piece is positioned in the hollow part, and when the keycap is settled, the pressing piece is contacted with the pressing piece and is pressed by the pressing piece.

Preferably, the pressing part further comprises a positioning column and/or a positioning hole, and the pressing part is sleeved on the positioning column and/or the positioning hole is sleeved on the pressing part.

Preferably, the scissors foot structure comprises a first bracket and a second bracket, the first bracket is positioned inside the second bracket, and the middle position of the outer side of the first bracket is hinged with the middle position of the inner side of the second bracket.

A keyboard with a scissor-foot structure comprises a key switch with the backlight structure.

By implementing the technical scheme of the utility model, the technical problems of great change of the structure of the scissor feet and great cost increase caused by adding the backlight component in the prior art can be solved; implement the technical scheme of the utility model, through setting up the bottom plate into transparent material for can no longer need introduce the leaded light sheet layer, therefore can be with the more frivolous of the preparation of non-light tight button structure of needs.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic disassembled structure view of an embodiment of the present invention;

fig. 2 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a bottom plate according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-3 of the drawings, a key switch 100 with a backlight structure includes a bottom plate 10, a trigger 50, a pressing member 20, a scissor-foot structure 30 and a key cap 40, which are disposed on the bottom plate from bottom to top, wherein the bottom plate 10 is made of a transparent material. Transparent material can select low density polyethylene, polypropylene, polyvinyl chloride, polystyrene, acrylonitrile styrene copolymer, it is transparent, ethylene glycol terephthalate, polycarbonate, organic glass, resin, arbitrary schemes among the prior art such as toughened glass, the light guide plate structure can be integrated to the transparent bottom plate, therefore realized the structure in the vertical direction and retrencied, transparent bottom plate makes other external light source or structure can set up in the below of bottom plate simultaneously, thereby the structural component of bottom plate top has been simplified, make more frivolous that the button structure can make. When the user is pressing the key cap, the key cap extrudees to the pressing piece, and scissors foot structure butt key cap and bottom plate realize the buffering effect simultaneously. The pressing piece gradually approaches and contacts the trigger piece in the sedimentation process, and the trigger piece is conducted or obtains an electric signal, so that the generation of a switching signal is realized.

In one embodiment, a backlight source 60 is further included, and is disposed in the chassis 10 or on an upper or lower side of the chassis. Due to the introduction of the transparent bottom plate structure, the backlight source can be arranged above and below the bottom plate, or the concave hollow design is carried out on the bottom plate, so that the embedding of the backlight source is realized. As shown in fig. 1-3, the backlight source 60 is disposed on the bottom plate of the hollow-out structure, so that the upper surface of the bottom plate and the upper surface of the backlight source are maintained on a same plane.

In one embodiment, as shown in fig. 1-3, the backlight source 60 is an LED dot matrix light source disposed on a flexible circuit board. The LED lattice light source on the flexible circuit board can select RGB's three-colour light source 610 or other polychrome LED lattice light sources of combination, can carry out the color combination, and the structure of flexible circuit board can conveniently lay and power supply management simultaneously, is not restricted to the color change of single LED light source for the button can present multiple color.

In one embodiment, as shown in fig. 1-3, the light-reflecting layer 70 is disposed on the bottom surface of the substrate, and is used to reflect light from the direction of the substrate. The reflecting layer can be selected to be arranged on the reflecting coating, the reflecting paper, the reflecting film and other prior art on the lower surface of the bottom plate, and can reflect light rays from the direction of the bottom plate, so that the guidance of the key is enhanced.

In one embodiment, as shown in fig. 1-3, the trigger 50 is a conductive film disposed between the base and the pressing member. The laying of the conductive film can enable the assembly of a plurality of key combination schemes to be more uniform, and the pressing pieces do not need to be calibrated one by one, so that the pressing pieces are not required to have conductivity, the selection types of the pressing pieces are enriched, and the production cost is reduced.

In one embodiment, as shown in fig. 1-3, the pressing member 20 is a conductive silicone pellet or a conductive silicone shell, which has good elasticity and low cost.

In one embodiment, the middle portion of the scissor-foot structure 30 is a hollow portion, and the pressing member 20 is located in the hollow portion and contacts and presses the pressing member when the key cap is settled down. Adjust the atress of key cap, bottom plate to the center and can adjust to press and feed back the effort of pressing the person through the key cap for the button atress is even, can not produce the skew.

In an embodiment, the pressing piece is sleeved on the positioning column and/or the positioning hole is sleeved on the pressing piece. The reference column and locating hole can be rectified to the position of key cap, and the action point that keeps the pressing piece simultaneously to a certain extent can be equivalent to the key cap stably. The positioning column can be connected to a rod-shaped structure on the keycap and can also be independently erected inside the pressing part, the positioning hole can be arranged on the bottom plate or the scissor foot structure, an annular ring can also be independently manufactured, and the scissor foot structure is sleeved outside the positioning hole.

In one embodiment, the scissor leg structure includes a first leg and a second leg, the first leg being positioned within the second leg, the medial lateral position of the first leg being hinged to the medial position of the second leg. The middle position of the outer side of the first support is hinged with the middle position of the inner side of the second support, so that the scissor structure is relatively close to the moment of the upper side structure of the hinged part and the moment of the lower side structure of the hinged part in the process that the keycap sinks, force is uniformly applied, and the service life of the key is prolonged.

A keyboard with a scissor-foot structure comprises a key switch with the backlight structure of any one of the preceding claims. By implementing the technical scheme of the utility model, the technical problems of great change of the structure of the scissor feet and great cost increase caused by adding the backlight component in the prior art can be solved; implement the technical scheme of the utility model, through setting up the bottom plate into transparent material for can no longer need introduce the leaded light sheet layer, therefore can be with the more frivolous of the preparation of non-light tight key structure of needs, and then reduced the whole thickness of keyboard under the condition of the height that does not change other parts, thereby make the keyboard more frivolous, or through increasing the sense of touch of the whole keyboard of scissors foot structure or other partial structure adjustment, and transparent material's bottom plate provides the space for this kind of adjustment.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A key switch with a backlight structure comprises a bottom plate, a trigger piece, a pressing piece, a scissor leg structure and a key cap, wherein the trigger piece, the pressing piece, the scissor leg structure and the key cap are arranged on the bottom plate from bottom to top; the backlight source is arranged in the bottom plate or on the upper side or the lower side of the bottom plate.

2. The key switch of claim 1, wherein: the backlight light source is an LED dot matrix light source arranged on the flexible circuit board.

3. The key switch of claim 1, wherein: the light reflection layer is arranged on the bottom surface of the bottom plate and used for reflecting light rays from the direction of the bottom plate.

4. The key switch of claim 1, wherein: the trigger piece is a conductive film, and the conductive film is arranged between the bottom plate and the pressing piece.

5. The key switch of claim 1, wherein: the pressing piece is conductive silica gel particles.

6. The key switch of claim 1, wherein: the middle part of the scissors foot structure is a hollow part, the pressing piece is positioned in the hollow part, and the key cap is contacted with the pressing piece and extrudes the pressing piece when settling.

7. The key switch of claim 1, wherein: the pressing piece is sleeved on the positioning column and/or the positioning hole is sleeved on the pressing piece.

8. The key switch of claim 1, wherein: the scissors foot structure comprises a first support and a second support, wherein the first support is located inside the second support, and the middle position of the outer side of the first support is hinged with the middle position of the inner side of the second support.

9. A keyboard with a scissor structure is characterized in that: a key switch comprising a backlight structure according to any of claims 1-8.

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