CN220041673U - Keyboard - Google Patents

Abstract

The utility model belongs to the technical field of external auxiliary equipment of computers, and provides a keyboard, which comprises a lower shell, an electric control board and a buffer board, wherein the electric control board is arranged in the lower shell, keys are arranged on the electric control board, each key comprises a key shaft and a key cap, and the key caps are fixed on the key shafts; the buffer plate is made of elastic rubber material, is installed in the lower shell and is arranged on the electric control plate; the buffer plate is provided with containing grooves which are the same as the keys in number and are used for installing the key shafts, the containing grooves are provided with upper openings, and the upper half parts of the key shafts are exposed from the upper openings and are connected with the key caps in an installation mode; the bottom of the accommodating groove is provided with a perforation, and the connecting end at the bottom of the key shaft penetrates out of the perforation to be connected with the electric control plate. The utility model aims to solve the technical problems that the silencing keyboard in the prior art is complex in internal structure and is not beneficial to disassembly and assembly.

Description

Keyboard

Technical Field

The utility model belongs to the technical field of external auxiliary equipment of computers, in particular to a keyboard with a silencing function.

Background

The keyboard is the most common and main input device of a computer, and can send instructions and input data to the computer through the keyboard, so that man-machine interaction is realized. The keyboard on the market generally comprises a shell, keys and a PCB (printed circuit board) connected with the keys, wherein the shell is coated outside the PCB. The key comprises a key shaft and a key cap, and the key shaft is connected with the PCB. The keycap is fixed at the upper end of the keyshaft for being pressed by a human finger, and meanwhile, the keyshaft is driven to trigger to generate a key signal.

For the key fixing structure on the keyboard, a positioning plate is generally required to be arranged, and a positioning hole for fixing the key is formed in the positioning plate. The key shaft is fixed on the positioning hole, so that the key shaft of each key is vertically connected to the PCB, and the accuracy of mutual alignment of the key shaft and the connecting point on the PCB is effectively improved. Specifically, in the inside of a keyboard, keycap, locating plate and PCB board set gradually from top to bottom. Wherein, there is the clearance easily between keycap and the locating plate, perhaps between locating plate and the PCB board. In actual use, when a hand strikes the keyboard, the finger presses the key to generate a pressing force from top to bottom, so that the keycap collides with the positioning plate or the positioning plate collides with the PCB, and sounds are easily generated, thereby influencing the environment. In order to achieve the silencing effect, a silencing plate is generally arranged in the keyboard in the prior art, and the silencing plate is arranged between the positioning plate and the PCB; or set up simultaneously between key cap and locating plate and between locating plate and the PCB board to play the effect of buffering collision, realize amortization effect.

However, the addition of the silencer plate in the keyboard makes the internal structure of the keyboard more complex, increases the overall thickness of the keyboard, and is complicated to assemble and disassemble, thereby being unfavorable for the light development of the keyboard. In addition, the hole site on the cooperation locating plate needs to be arranged on the silencer plate, and the installation of the key shaft can be avoided, so that the structure of the silencer plate needs to be specially arranged, and the production cost is increased.

Disclosure of Invention

The embodiment of the utility model aims to provide a novel keyboard so as to solve the technical problems that the internal structure of a silencing keyboard in the prior art is complex and disassembly is not facilitated.

In order to achieve the above purpose, the utility model adopts the following technical scheme: there is provided a keyboard comprising:

a lower case;

the electric control board is arranged in the lower shell, a key is arranged on the electric control board and comprises a key shaft and a key cap, and the key cap is fixed on the key shaft;

the buffer plate is made of elastic rubber materials, is installed in the lower shell and is arranged on the electric control plate; the buffer plate is provided with containing grooves which are the same as the keys in number and are used for installing the key shafts, the containing grooves are provided with upper openings, and the upper half parts of the key shafts are exposed from the upper openings and are connected with the key caps in an installation mode; the bottom of the accommodating groove is provided with a perforation, and the connecting end at the bottom of the key shaft penetrates out of the perforation to be connected with the electric control plate.

Therefore, the buffer plate made of elastic rubber material plays roles in positioning and silencing, so that the internal structure of the keyboard is effectively simplified, the disassembly and assembly are convenient, and the production cost is reduced. The upper opening is arranged on the accommodating groove, so that the upper half part of the key shaft can be exposed out of the upper opening of the accommodating groove, and the spacing space between the key cap arranged on the key shaft and the upper surface of the buffer plate is increased. The shape of the key cap can be set more various by utilizing the interval space, or the volume of the key cap is increased, so that the key cap is more comfortable to press, and the overall aesthetic feeling and the use experience of the keyboard are improved.

The lower shell structure in the two embodiments is improved, the inner wall of the lower shell is provided with a step, and the edge of the buffer plate is placed on the step. On the one hand, play the supporting role to the buffer board, the buffer board takes place to shift easily when preventing the staff from striking the keyboard, improves the fixed effect to the buffer board. On the other hand, the buffer plate is erected by the arranged steps, so that an isolation space is formed between the buffer plate and the inner bottom surface of the lower shell, and the raised part existing at the bottom of the electric control plate is accommodated by the isolation space.

The present utility model also provides another keyboard comprising:

a bottom plate;

the electric control plate is arranged on the bottom plate; the electric control board is provided with a key, the key comprises a key shaft and a key cap, and the key cap is fixed on the key shaft;

the upper shell is arranged on the bottom plate, and the electric control plate is accommodated in the upper shell; the upper shell is made of elastic rubber materials, the upper shell is provided with containing grooves which are the same as the keys in number and are used for installing the key shafts, and the key shafts are contained in the containing grooves; the bottom of the accommodating groove is provided with a perforation, and the connecting end at the bottom of the key shaft penetrates out of the perforation to be connected with the electric control plate.

Therefore, the electric control board is arranged on the bottom plate, the upper shell is connected with the bottom plate up and down, so that the electric control board is accommodated in the upper shell, the electric control board is coated and protected from the upper surface and the periphery, foreign objects are effectively prevented from easily entering the keyboard, and the protection effect on the electric control board is improved. The upper shell is made of elastic rubber materials aiming at the key structure on the electric control board, so that the silencing effect can be achieved, and the accommodating grooves on the upper shell can be used for fixing all keys. The upper shell is used as a shell for coating and protecting internal parts and is also used as a positioning plate for installing keys, and the upper shell is made of elastic rubber materials, so that the structure of the keyboard is effectively simplified, the disassembly and assembly are convenient, and the production cost is reduced.

The structure of the upper shell is improved, the upper shell is provided with a lower opening, and the bottom plate covers the lower opening of the upper shell. Therefore, the electric control board is contained in the upper shell, the upper shell surrounds the electric control board from the top to the side in an omnibearing manner, foreign objects such as dust particles are reduced to easily enter the keyboard from the upper part and the side, and the protection effect on the electric control board is effectively improved.

The structure of the accommodating groove is improved, a blocking edge extending towards the inside of the accommodating groove is arranged on a notch surrounding the accommodating groove, and the blocking edge limits the key shaft in the accommodating groove. Therefore, the stop edge is a check button formed on the accommodating groove, and the key shaft is limited after being embedded into the accommodating groove, so that the key shaft is effectively prevented from falling out of the accommodating groove. In addition, the whole key shaft is limited in the accommodating groove by the baffle edges, so that a fully-enclosed protection structure is formed, and the fixing effect on the key shaft is effectively improved.

The structure of the blocking edge is improved, a chamfer is arranged at the bottom of the blocking edge, and the chamfer is matched with the peripheral outline of the upper half part of the key shaft. On the one hand, the bottom of the baffle edge is provided with a chamfer, so that the inner space of the fully-enclosed accommodating groove structure can be increased, and the assembly of the key shaft is prevented from being blocked; meanwhile, the structure of the baffle edge is thinner and softer, and is easy to deform and rebound and restore, thereby being beneficial to the installation operation of the key shaft. On the other hand, the chamfer at the bottom of the baffle edge is matched with the outline of the periphery of the upper half part of the key shaft, so that the bottom of the baffle edge is tightly attached to the periphery of the key shaft, and the fixing effect on the key shaft is further improved.

Optionally, the holding groove with the form fit of key axle is rectangular cell body structure, surrounds be equipped with respectively on the notch four sides of holding groove keep off the edge, adjacent keep off and have separation gap between the edge. Adjacent blocking edges are separated from each other by the separation joint, and gaps are formed in which the blocking edges can deform and move respectively.

Optionally, a light emitting element corresponding to the position of the key shaft is arranged on the electric control board, and a light source emitted by the light emitting element irradiates the key cap through the key shaft; the baffle edge is provided with an avoidance notch matched with the position of the light source irradiation path. On the one hand, the electric control board is provided with a luminous piece corresponding to each key, and a light source emitted by the luminous piece passes through the key shaft and irradiates onto the key cap, so that the structure of the luminous keyboard is formed, and the aesthetic feeling is improved. On the other hand, aiming at the irradiation path of the luminous piece, the baffle edge of the buffer plate is provided with an avoidance gap so as to avoid shielding the light source, so that the light source can smoothly irradiate onto the keycap, and the light transmission effect is improved.

The structure of the accommodating groove is improved, the shape of the accommodating groove is matched with the outline of the periphery of the key shaft, the periphery of the key shaft is provided with a convex edge, and the convex edge is in interference fit with the inner peripheral wall of the accommodating groove. Therefore, the shape of the accommodating groove is matched with the outline of the outer periphery of the key shaft, so that the inner peripheral wall of the accommodating groove is attached to the outer periphery of the key shaft, and the positioning effect is improved. Utilize protruding edge and the interior perisporium interference fit of storage tank on the key axle periphery to prevent that the key axle from droing easily, and then improve the fixed effect to the key axle.

Optionally, the inner peripheral wall of the accommodating groove is obliquely arranged from the groove opening to the groove bottom direction, so that the groove body shape of each accommodating groove is in a structure gradually expanding from the groove bottom to the groove opening. The key shaft is easy to embed in the accommodating groove during installation, and then the fixing is realized by utilizing the interference fit between the inner peripheral wall of the accommodating groove and the periphery of the key shaft, so that the installation efficiency is improved.

The keyboard provided by the utility model has the beneficial effects that: compared with the prior art, the plate made of elastic rubber material is arranged on the PCB, and the plate can be a buffer plate arranged inside the keyboard or an upper shell of the keyboard. The plate made of elastic rubber material is provided with containing grooves with the same number as the keys, and the containing grooves are used for installing key shafts of the keys so that the key shafts are arranged in the containing grooves and are connected with the electric control board in an installation mode. Therefore, the accommodating groove on the plate is utilized to play a role in installing and positioning the keys.

On one hand, the plate structure made of elastic rubber material is combined, so that the accommodating groove formed on the plate has stress deformation and resilience, and the key shaft is convenient to mount or dismount; the key shaft is prevented from falling off easily, and the fixing effect of the key shaft is ensured. On the other hand, the plate made of elastic rubber material can play a role in respectively resisting collision buffering of the key cap above and the electric control plate below, and the silencing effect is improved. Therefore, the plate made of the elastic rubber material has the positioning and silencing effects, so that the internal structure of the keyboard is effectively simplified, the assembly and disassembly are convenient, and the production cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a first keyboard according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of an explosion structure of a first keyboard according to an embodiment of the present utility model;

fig. 3 is a schematic enlarged view of a portion of a first accommodating groove according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a key installed in a first receiving groove according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a key shaft perspective structure according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of a second perspective structure of a keyboard according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of an explosion structure of a second keyboard according to an embodiment of the present utility model;

fig. 8 is a schematic diagram of a third perspective structure of a keyboard according to an embodiment of the present utility model;

FIG. 9 is a cross-sectional view of a third keyboard according to an embodiment of the present utility model;

FIG. 10 is an enlarged schematic view of portion A of FIG. 9;

FIG. 11 is a schematic enlarged view of a portion of a second receiving slot according to an embodiment of the present utility model;

fig. 12 is a schematic diagram illustrating an assembly relationship between a second accommodating groove, a key shaft and an electric control board according to an embodiment of the present utility model;

fig. 13 is a schematic perspective view of a fourth keyboard according to an embodiment of the present utility model;

fig. 14 is a schematic diagram of a fourth explosion structure of a keyboard according to an embodiment of the present utility model;

fig. 15 is a schematic perspective view of a fifth keyboard according to an embodiment of the present utility model;

fig. 16 is a schematic diagram of an explosion structure of a fifth keyboard according to an embodiment of the present utility model;

fig. 17 is a schematic diagram of a fifth explosion structure of a keyboard according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1-a lower shell; 11-steps; 111-protrusions; 12-fixing columns;

2-an electric control board; 21-a light emitting member;

3-a buffer plate; 31-positioning holes;

4-key; 41-key shaft; 411-convex edge; 42-a key cap;

5-a containing groove; 51-upper opening; 52-perforating; 53-blocking edge; 531-chamfering; 532-avoiding the notch;

6-an upper shell; 60-a central opening; 61-a lower opening; 62-arc surface;

7-a bottom plate.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model 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 for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" 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 is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

With respect to the keyboard structure in industry, in the related art, the development of a fan (user) guided "customized" keyboard in recent years has occurred, and many innovative structures, most prominent is silencing. There are various ways to implement noise reduction on a keyboard: if an elastic gasket is added on the periphery of the rigid locating plate; alternatively, a material having a certain elasticity is used as the positioning plate, such as pc plate, glass fiber plate, carbon fiber plate, etc.; or, directly adding silencing cotton or silica gel and the like between the positioning plate and the PCB; in addition, the structure of the positioning plate is canceled, and ways of silencing cotton or silica gel and the like are added between the bottom of the PCB and the inner bottom surface of the lower shell, so that the purpose of buffering collision between adjacent parts when a key is knocked is achieved, and silencing effect is achieved.

The mode of canceling the locating plate can lead to poor installation stability of the key shafts, so that adjacent gaps among the key shafts are lack of filling, the internal structure of the whole keyboard is loose, and keys are easy to malfunction and damage.

Therefore, the mode of arranging the silencing layer such as silencing cotton or silica gel between the positioning plate and the PCB is commonly adopted on the keyboard with the positioning plate, so that gaps between key shafts are filled, cavities are reduced, and noise is eliminated. However, the muffler plate of the above embodiment needs to be specially provided in association with the hole site structure of the positioning plate, which increases the manufacturing cost of the mold opening. In addition, the internal structure of the keyboard becomes more complex, the disassembly and assembly are complicated, the whole thickness of the keyboard is increased, and the light development of the keyboard is not facilitated.

The embodiment of the utility model provides a novel silencing keyboard, which is described in detail.

In the first embodiment of the present utility model, referring to fig. 1 and 2, the keyboard at least includes a bottom case 1, an electric control board 2 and a buffer board 3.

The electronic control board 2 is arranged inside the lower shell 1, keys 4 are arranged on the electronic control board 2, each key 4 comprises a key shaft 41 and a key cap 42, and the key caps 42 are used for being fixed on the key shafts 41 and pressed by human fingers, so that the key shafts 41 are driven to move downwards to trigger points on the electronic control board 2, and input signals are generated.

The buffer plate 3 is made of elastic rubber material, preferably silica gel material, so that the buffer plate 3 has a plate body structure with compression deformation or elastic recovery. The buffer plate 3 is installed inside the lower case 1 and is disposed above the electric control plate 2.

The buffer plate 3 is provided with the same number of accommodating grooves 5 as the keys 4, and the accommodating grooves 5 are used for installing the key shafts 41 of the keys 4. As shown in fig. 2 and 3, each of the accommodating grooves 5 has an upper opening 51 so that an upper half of the key shaft 41 is exposed from the upper opening 51 and is attached to the key cap 42. The bottom of the accommodating groove 5 is provided with a perforation 52, and the connecting end at the bottom of the key shaft 41 passes through the perforation 52 to be connected with the electric control plate 2.

Compared with the prior art, the keyboard provided by the embodiment has the advantages that the buffer plate 3 made of elastic rubber materials such as silica gel is arranged on the electric control plate 2, the buffer plate 3 is provided with the containing grooves 5 with the same number as the keys 4, the containing grooves 5 are used for installing the key shafts 41 of the keys 4, so that the key shafts 41 are arranged in the containing grooves 5 and are respectively connected with the key caps 42 and the electric control plate 2. In this way, the accommodating groove 5 on the buffer plate 3 is utilized to play a role in installing and positioning the key 4.

Since the buffer plate 3 is made of an elastic rubber material, it has a compression deformation or elastic recovery characteristic. On the one hand, the key shaft 41 is only required to be embedded into the accommodating groove 5 in an interference fit manner during installation, so that the installation can be completed, and the operation is very convenient. The key shaft 41 is arranged in the accommodating groove 5, and is wrapped and contacted by the inner wall of the accommodating groove 5 to play a damping role, so that the key shaft 41 is effectively prevented from falling off easily. On the other hand, by utilizing the deformability and elastic recovery characteristics of the buffer plate 3, it is advantageous to respectively resist the impact of pressing down the key caps 42 from above onto the buffer plate 3 when the key 4 is struck by a human hand; or, the buffer plate 3 collides with the electric control plate 2 below, so that an effective buffer effect is achieved, and a silencing effect is achieved. Therefore, the buffer plate 3 in the embodiment plays roles of positioning and silencing at the same time, so that the internal structure of the keyboard is effectively simplified, the assembly and disassembly are convenient, and the production cost is reduced.

In the present embodiment, as shown in fig. 2, 3 and 4, the accommodating groove 5 has an upper opening 51 so that an upper half portion of the key shaft 41 can be exposed on the upper opening 51 of the accommodating groove 5, thereby increasing the spacing space L1 between the key cap 42 on the key shaft 41 and the upper surface of the buffer plate 3. The shape of the key cap 42 can be set more various by utilizing the spacing space L1, or the volume of the key cap 42 is increased, so that the hand can press more comfortably, and the overall aesthetic feeling and the use experience of the keyboard are improved.

For the structure of the accommodating groove 5, please refer to fig. 3 and 4 together in the present embodiment, the shape of the accommodating groove 5 is matched with the outline of the outer periphery of the key shaft 41, so that the inner peripheral wall of the accommodating groove 5 is matched with the outer periphery of the key shaft 41, and the positioning effect is improved.

On the basis, as shown in fig. 4 and 5, the protruding edge 411 is provided on the outer periphery of the key shaft 41, and the protruding edge 411 on the outer periphery of the key shaft 41 is in interference fit with the inner peripheral wall of the accommodating groove 5, so that the key shaft 41 is prevented from falling off easily, and the fixing effect on the key shaft 41 is improved. In other embodiments, a convex ring may be provided on the outer periphery of the key shaft 41 to achieve the same effect.

Preferably, referring to fig. 3 and 4 together, the inner peripheral wall L2 of the accommodating groove 5 on the buffer plate 3 is inclined from the upper opening 51 to the groove bottom, so that the shape of the groove body of each accommodating groove 5 gradually expands from the groove bottom to the upper opening 51. The key shaft 41 is easy to be embedded in the accommodating groove 5 during installation, and then the fixing is realized by utilizing the interference fit between the inner peripheral wall L2 of the accommodating groove 5 and the periphery of the key shaft 41, so that the installation efficiency is improved.

In a second embodiment of the present utility model, referring to fig. 6 and 7, the keyboard further includes an upper case 6, the upper case 6 has a frame structure with a central opening 60, the upper case 6 is connected to the lower case 1 in a vertical mounting manner, the upper case 6 covers the edge of the buffer plate 3, so that the keys 4 on the buffer plate 3 are exposed from the central opening 60 of the upper case 6. Accordingly, the upper case 6 and the lower case 1 clamp and fix the buffer plate 3 from the up-down direction, thereby improving the fixing effect on the buffer plate 3.

In a third embodiment of the present utility model, referring to fig. 8, 9 and 10, the keyboard includes a lower case 1, an electric control board 2 and a buffer board 3. Wherein, on the basis of the above embodiment, a blocking edge 53 extending towards the inside of the accommodating groove 5 is arranged on the notch around the accommodating groove 5, and the blocking edge 53 limits the key shaft 41 in the accommodating groove 5.

In this way, the stop edge 53 forms a non-return button on the accommodating groove 5, and limits the key shaft 41 after the key shaft 41 is inserted into the accommodating groove 5, so as to effectively prevent the key shaft 41 from falling out of the accommodating groove 5. In addition, since the whole key shaft 41 is limited in the accommodating groove 5 by the blocking edge 53, a fully-enclosed protection structure is formed, the fixing effect on the key shaft 41 is effectively improved, and the coaxiality of the key shaft 41 connected to the connection part of the electric control board 2 is improved.

In this embodiment, referring to fig. 10 and 11 together, the bottom of the flange 53 is provided with a chamfer 531, and the chamfer 531 may be preferably provided as a chamfer 531 with an arc surface, so that the chamfer 531 matches with the upper half peripheral contour of the key shaft 41, thereby improving the adaptability.

On the one hand, the bottom of the baffle edge 53 is provided with the chamfer 531, so that the inner space of the fully-enclosed accommodating groove 5 structure can be increased, and the assembly of the key shaft 41 is prevented from being blocked; at the same time, the structure of the blocking edge 53 is thinner and softer, and is easy to deform and rebound and restore, thereby facilitating the installation operation of the key shaft 41. On the other hand, the chamfer 531 at the bottom of the blocking edge 53 is matched with the outline of the outer periphery of the upper half part of the key shaft 41, so that the bottom of the blocking edge 53 is tightly attached to the outer periphery of the key shaft 41, and the fixing effect on the key shaft 41 is further improved.

Preferably, as shown in fig. 11, the accommodating groove 5 and the key shaft 41 are in a rectangular groove body structure in a shape matching, the blocking edges 53 are respectively arranged on four sides of the notch around the accommodating groove 5, and separation slits 34 are arranged between the adjacent blocking edges 53. In this way, adjacent flanges 53 are separated from each other by the separation slit 34, and a gap is formed in which each flange 53 is deformable and movable. The movable range of each blocking edge 53 is increased when the key shaft 41 is embedded into the notch of the accommodating groove 5, so that the blocking edges 53 can be spread by the key shaft 41 to be embedded into the accommodating groove 5. The blocking edge 53 is then deformed to restore and block the notch of the accommodating groove 5 to block the key shaft 41, thereby preventing the key shaft 41 from being easily removed from the notch of the accommodating groove 5, effectively forming a full-surrounding fixing structure for the key shaft 41.

In this embodiment, referring to fig. 12, the electric control board 2 is provided with a light emitting member 21 (the mounting position of the light emitting member is marked in fig. 2) corresponding to the position of the key shaft 41, and the light source L3 emitted by the light emitting member 21 irradiates onto the key cap 42 through the key shaft 41, so as to form a structure of a light emitting keyboard, and improve the aesthetic feeling.

For the irradiation path of the light emitting element 21, the blocking edge 53 of the buffer plate 3 is provided with an avoidance notch 532 matched with the position of the irradiation path of the light source L3, so that the light source can smoothly irradiate onto the keycap 42, and the light transmission effect is improved.

In a fourth embodiment of the present utility model, referring to fig. 13 and 14, the keyboard further includes an upper case 6, the upper case 6 has a frame structure with a central opening 60, the upper case 6 is connected to the lower case 1 in a vertical mounting manner, the upper case 6 covers the edge of the buffer plate 3, so that the keys 4 on the buffer plate 3 are exposed from the central opening 60 of the upper case 6. Accordingly, the upper case 6 and the lower case 1 clamp and fix the buffer plate 3 from the up-down direction, thereby improving the fixing effect on the buffer plate 3.

For the structure of the lower case 1 in the above four embodiments, please refer to fig. 7 and 14 together, the inner wall of the lower case 1 is provided with a step 11, and the edge of the buffer plate 3 is placed on the step 11. On the one hand, play the supporting role to the buffer board 3, the buffer board 3 takes place to shift easily when preventing the staff from striking the keyboard, improves the fixed effect to the buffer board 3. On the other hand, the buffer plate is set up by the provided step so that an isolation space is formed between the buffer plate 3 and the inner bottom surface of the lower case 1, and the raised portion existing at the bottom of the electric control plate 2 is accommodated by the isolation space.

Preferably, as shown in fig. 7 and 14, a protrusion 111 is provided on the step 11, and the protrusion 111 may preferably be a convex strip. The edge of the buffer plate 3 is provided with a positioning hole 31 corresponding to the position of the protrusion 111, and the shape of the positioning hole 31 is matched with the protrusion 111, so that the protrusion 111 and the positioning hole 31 can be mutually inserted, and the positioning effect on the buffer plate 3 is improved.

In addition, referring to fig. 12, referring to the mounting structure of the electric control board 2 and the buffer board 3 on the lower shell 1, a fixing column 12 for supporting the electric control board 2 is further provided in the lower shell 1, the fixing column 12 is erected on the inner bottom surface of the lower shell 1 and supports the electric control board 2, so that an isolation space is formed between the electric control board 2 and the inner bottom surface of the lower shell 1, which is favorable for accommodating the protruding portion existing at the bottom of the electric control board 2. The fixing post 12 has a screw hole (not shown), the electric control plate 2 has a first mounting hole (not shown), and the buffer plate 3 has a second mounting hole (not shown), and the screw hole, the first mounting hole and the second mounting hole correspond to each other, so that fasteners such as screws and the like can be installed and fastened.

The fixing modes of the buffer plate 3 and the electric control plate 2 can be combined with each other, the edges of the buffer plate 3 are supported respectively, the fixing modes are close to the middle area of the lower shell 1, and the fixing columns 12 are utilized to support the middle areas of the electric control plate 2 and the buffer plate 3, so that the fixing effect is improved.

In a fifth embodiment of the present utility model, referring to fig. 15, 16 and 17, the keyboard includes an electronic control board 2, an upper case 6 and a bottom board 7. The difference from the four embodiments described above is that the upper case 6 is provided on the bottom plate 7, and the electric control board 2 described above is housed inside the upper case 6. The upper case 6 is made of elastic rubber material, preferably silica gel material, so that the upper case 6 has a case structure that is deformed under pressure or elastically restored.

The upper case 6 is provided with the same number of accommodating grooves 5 as the keys 4, and the accommodating grooves 5 are used for mounting the key shafts 41, so that the key shafts 41 are accommodated in the accommodating grooves 5. The bottom of the accommodating groove 5 is also provided with a perforation 52, and the connecting end at the bottom of the key shaft 41 passes out of the perforation 52 to be connected with the electric control plate 2.

Preferably, a blocking edge 53 extending toward the inside of the receiving groove 5 is provided around the notch of the receiving groove 5, and the blocking edge 53 restricts the key shaft 41 within the receiving groove 5. The stop edge 53 is formed on the receiving groove 5 to stop the key shaft 41 after the key shaft 41 is inserted into the receiving groove 5, thereby preventing the key shaft 41 from being easily removed from the receiving groove 5. In addition, since the whole key shaft 41 is limited in the accommodating groove 5 by the blocking edge 53, a fully-enclosed protection structure is formed, the fixing effect on the key shaft 41 is effectively improved, and the coaxiality of the key shaft 41 connected to the connection part of the electric control board 2 is improved.

In this embodiment, the bottom plate 7 is used as a bearing plate, the electric control plate 2 is arranged on the bottom plate 7, and the upper shell 6 is connected with the bottom plate 7 up and down, so that the electric control plate 2 is accommodated in the upper shell 6, thereby protecting the electric control plate 2 from the upper surface and the periphery, effectively preventing foreign objects from easily entering the keyboard, and improving the protection effect on the electric control plate 2. Aiming at the key 4 structure on the electric control board 2, the upper shell 6 is made of elastic rubber material such as silica gel, so that the silencing effect can be achieved, and the accommodating grooves 5 on the upper shell 6 can be utilized to fix all keys 4. Therefore, on the keyboard of this embodiment, the upper shell 6 is used as a shell for cladding and protecting internal parts, and is also used as a positioning plate for installing the keys 4, and further because the upper shell 6 is made of elastic rubber material, the silencing effect is achieved, the internal structure of the keyboard is effectively simplified, the disassembly and assembly are convenient, and the production cost is reduced.

In this embodiment, referring to fig. 17, the upper case 6 has a lower opening 61, and the bottom plate covers the lower opening 61 of the upper case 6. The electric control board 2 is contained in the upper shell 6, the upper shell 6 surrounds the electric control board 2 from the top to the side in an omnibearing manner, so that foreign objects such as dust particles can be reduced from easily entering the inside of the keyboard from the upper part and the side, and the protection effect on the electric control board 2 is effectively improved.

As shown in fig. 15, the outer side surface of the upper shell 6 has an arc surface 62, so that an arc edge structure similar to a life buoy is formed, which is beneficial to improving comfort feeling in contact with hands and improving use experience.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A keyboard, comprising:

a lower case;

the electric control board is arranged in the lower shell, a key is arranged on the electric control board and comprises a key shaft and a key cap, and the key cap is fixed on the key shaft;

the buffer plate is made of elastic rubber materials, is installed in the lower shell and is arranged on the electric control plate; the buffer plate is provided with containing grooves which are the same as the keys in number and are used for installing the key shafts, the containing grooves are provided with upper openings, and the upper half parts of the key shafts are exposed from the upper openings and are connected with the key caps in an installation mode; the bottom of the accommodating groove is provided with a perforation, and the connecting end at the bottom of the key shaft penetrates out of the perforation to be connected with the electric control plate.

2. A keyboard as claimed in claim 1, wherein: the inner wall of the lower shell is provided with a step, and the edge of the buffer plate is placed on the step.

3. A keyboard, comprising:

a bottom plate;

the electric control plate is arranged on the bottom plate; the electric control board is provided with a key, the key comprises a key shaft and a key cap, and the key cap is fixed on the key shaft;

the upper shell is arranged on the bottom plate, and the electric control plate is accommodated in the upper shell; the upper shell is made of elastic rubber materials, the upper shell is provided with containing grooves which are the same as the keys in number and are used for installing the key shafts, and the key shafts are contained in the containing grooves; the bottom of the accommodating groove is provided with a perforation, and the connecting end at the bottom of the key shaft penetrates out of the perforation to be connected with the electric control plate.

4. A keyboard as claimed in claim 3, wherein: the upper shell is provided with a lower opening, and the bottom plate covers the lower opening of the upper shell.

5. A keyboard as claimed in claim 1 or 3, wherein: the notch surrounding the accommodating groove is provided with a blocking edge extending towards the inside of the accommodating groove, and the blocking edge limits the key shaft in the accommodating groove.

6. The keyboard as claimed in claim 5, wherein: the bottom of keeping off the edge is equipped with the chamfer, the chamfer with the upper half periphery profile of key axle cooperatees.

7. The keyboard as claimed in claim 5, wherein: the holding groove with the form fit of key axle is rectangular cell body structure, centers on the notch four sides of holding groove are equipped with respectively keep off the edge, adjacent keep off and have separation gap between the edge.

8. The keyboard as claimed in claim 5, wherein: the electronic control board is provided with a light emitting part corresponding to the position of the key shaft, and a light source emitted by the light emitting part irradiates the key cap through the key shaft; the baffle edge is provided with an avoidance notch matched with the position of the light source irradiation path.

9. A keyboard as claimed in claim 1 or 3, wherein: the shape of the accommodating groove is matched with the outline of the periphery of the key shaft, the periphery of the key shaft is provided with a convex edge, and the convex edge is in interference fit with the inner peripheral wall of the accommodating groove.

10. A keyboard as claimed in claim 1 or 3, wherein: the inner peripheral wall of the accommodating groove is obliquely arranged from the notch to the groove bottom.