Keyboard

Abstract

The utility model discloses a keyboard, which relates to the technical field of keyboards and comprises a shell component, a fixing plate, a control plate and a plurality of key core components. A containing cavity is formed in the shell assembly. The fixing plates are arranged in the accommodating cavity; the plurality of key core assemblies are fixedly mounted on the fixing plate; the control panel is arranged in the containing cavity and located below the fixing plate. The key core assembly comprises a sliding shaft and a magnet installed on the sliding shaft, the control panel comprises a PCB and a Hall element installed on the PCB, and the PCB is provided with a plurality of through holes corresponding to the sliding shaft one to one; the sliding shaft moves up and down relative to the PCB so as to penetrate out of the through hole. The N pole and the S pole of the magnet are located in the horizontal direction, and the projection of the Hall element in the horizontal direction is right opposite to the lower end of the magnet. The technical scheme provided by the utility model is used for avoiding the situation that the initial pressing of the keyboard has no function.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboards, and particularly relates to a keyboard. Background Art

[0002] A keyboard is an instruction and data input device used to operate a computer device, and also refers to a set of function keys (such as a typewriter keyboard, a computer keyboard) arranged to operate a machine or device.

[0003] As Figure 9 and Figure 10 shown, in the keyboards on the market, the keys are structured such that the magnet is directly above the Hall device, and the N and S poles of the magnet are arranged vertically. When the magnetic induction line passes through the Hall device, the voltage value will change. The greater the magnetic induction intensity, the greater the voltage change. However, the magnetic induction line is not linearly related to the distance. At the starting position, because the distance from the Hall device is far, the voltage change during downward movement is very weak. When approaching the Hall device position, the voltage change amount during downward movement is very large, which may cause the initial pressing to have no function. Therefore, it is necessary to avoid the occurrence of the adverse situation where the initial pressing has no function. Content of the Utility Model

[0004] The main object of the utility model is to propose a keyboard, aiming to avoid the occurrence of the adverse situation where the initial pressing has no function.

[0005] To achieve the above object, the utility model proposes a keyboard, comprising:

[0006] A housing assembly, within which a receiving cavity is formed;

[0007] A fixing plate, which is arranged within the receiving cavity;

[0008] A plurality of key core assemblies, which are fixedly installed on the fixing plate, and each key core assembly includes a sliding shaft and a magnet connected to the sliding shaft;

[0009] A control board, which is arranged within the receiving cavity and is located below the fixing plate. The control board includes a PCB board and a Hall element installed on the PCB board. The PCB board has a plurality of through holes corresponding to the sliding shafts one by one;

[0010] Wherein, the magnet moves up and down relative to the PCB board to pass through the through holes; the N pole and S pole of the magnet are in the horizontal direction, and the projection of the Hall element in the horizontal direction is directly opposite to the lower end of the magnet.

[0011] In an embodiment, the keyboard further includes a limiting plate, which is arranged below the control board and is used to limit the downward movement of the sliding shaft.

[0012] In one embodiment, the keyboard further includes a first sound-absorbing cotton and a second sound-absorbing cotton, and the second sound-absorbing cotton and the first sound-absorbing cotton are respectively disposed on the upper and lower sides of the limiting plate.

[0013] In one embodiment, the key core assembly further includes a base, a transmission member, and a reset member. The base is buckled on the fixing plate; the base includes a slide rail cavity, and the transmission member is slidably disposed in the slide rail cavity; the sliding shaft is connected to the lower end of the transmission member; the reset member is sleeved outside the sliding shaft and is used to reset the sliding shaft.

[0014] In one embodiment, a plurality of positioning grooves are provided on the side wall of the slide rail cavity, and a plurality of positioning buckles adapted to the positioning grooves are provided on the outer wall of the transmission member. The positioning buckles and the positioning grooves are used to limit the upward movement of the transmission member.

[0015] In one embodiment, the limiting plate has a plurality of elastic limiting portions, and the elastic limiting portions face the sliding shaft.

[0016] In one embodiment, the limiting plate has a plurality of openings, and the elastic limiting portions are integrally provided on the inner walls of the openings.

[0017] In one embodiment, the elastic limiting portion includes two elastic arms and a limiting platform. One ends of the two elastic arms are respectively connected to both sides of the limiting platform, and the other ends are respectively connected to the inner walls of the openings.

[0018] In one embodiment, the keyboard further includes a first partition plate and a second partition plate. The first partition plate is disposed above the control board, and the second partition plate is disposed below the control board; the keyboard further includes a bottom plate. The first sound-absorbing cotton is disposed below the limiting plate, and the bottom plate is disposed below the first sound-absorbing cotton.

[0019] The present invention also provides a keyboard, including:

[0020] A housing assembly, an accommodation cavity is formed inside the housing assembly;

[0021] A fixing plate, the fixing plate is disposed in the accommodation cavity;

[0022] A plurality of key core assemblies, the plurality of key core assemblies are fixedly installed on the fixing plate, and the key core assembly includes a sliding shaft and a magnet connected to the sliding shaft;

[0023] A control board, disposed in the accommodation cavity and located below the fixing plate. The control board includes a PCB board and a Hall element installed on the PCB board. The PCB board has a plurality of through holes corresponding to the sliding shafts one by one;

[0024] A limiting plate is arranged below the control board, and the limiting plate is used to limit the downward movement of the sliding shaft.

[0025] Wherein, the magnet moves up and down relative to the PCB board to pass through the through hole; the N pole and S pole of the magnet are in the horizontal direction, and the projection of the Hall element in the horizontal direction is directly opposite to the lower end of the magnet; when the magnet moves down to the farthest position, the projection of the Hall element in the horizontal direction is directly opposite to the upper end of the magnet.

[0026] In the keyboard of the technical solution of the present utility model, the magnet adopts N poles and S poles arranged horizontally on the left and right. The magnet is arranged on the side of the Hall element, and the N pole and S pole of the magnet are placed left and right. The magnetic induction intensity is the same at the starting position and the ending position, so that the situation of no function at the initial press can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0028] Figure 1 It is a schematic structural diagram of an embodiment of the keyboard provided by the present utility model;

[0029] Figure 2 It is a schematic cross-sectional structure diagram of the housing of an embodiment of the keyboard provided by the present utility model;

[0030] Figure 3 For Figure 2 The partial enlarged view of the embodiment;

[0031] Figure 4 It is a schematic structural diagram of the key core assembly of an embodiment of the keyboard provided by the present utility model;

[0032] Figure 5 It is an exploded structural diagram of the key core assembly of an embodiment of the keyboard provided by the present utility model;

[0033] Figure 6 It is a schematic structural diagram of the limiting plate of an embodiment of the keyboard provided by the present utility model;

[0034] Figure 7 For Figure 6 The partial enlarged view of the embodiment;

[0035] Figure 8Schematic diagram of the farthest downward position of the sliding shaft in an embodiment of the keyboard provided by the present utility model;

[0036] Figure 9 Schematic diagram of the structure of the key core in the prior art;

[0037] Figure 10 Relationship diagram between the downward displacement of the magnet of the key core in the prior art and the magnetic induction voltage;

[0038] Figure 11 Relationship diagram between the downward displacement of the magnet of the keyboard provided by the present utility model and the magnetic induction voltage.

[0039] Explanation of the reference numerals in the drawings:

[0040] 1. Housing assembly; 11. Front shell; 12. Bottom shell; 2. Fixed plate; 3. Key core assembly; 31. Sliding shaft; 311. Flat part; 312. Shaft part; 32. Magnet; 33. Base; 331. Slide rail cavity; 332. Positioning groove; 333. Circular ring convex wall; 34. Transmission part; 341. Installation cavity; 342. Positioning buckle; 35. Reset part; 4. Control board; 41. PCB board; 411. Through hole; 42. Hall element; 5. Limiting plate; 51. Elastic limiting part; 511. Elastic arm; 512. Limiting platform; 52. Opening; 6. First sound-absorbing cotton; 7. Second sound-absorbing cotton; 8. Bottom plate; 9. First partition; 10. Second partition. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0044] As Figure 9 shown, the key cores on the market all have magnets arranged above the Hall, and the N and S poles of the magnets are arranged vertically. During the downward movement of such key cores, the relationship between the magnetic induction voltage and the downward displacement (see Figure 10 ), at the initial pressing, the voltage change during downward movement is very weak, while when approaching the position of the Hall device, the voltage change amount during downward movement is very large, which may cause the initial pressing to have no function. Therefore, this application has made improvements. The Hall device is arranged on one side of the magnet, and the N and S poles of the magnet are arranged horizontally left and right. As Figure 11 shown by the measured curve of the relationship between the magnetic induction voltage and the downward displacement, because the magnetic induction intensities at the starting position and the ending position are the same, the entire change amount is almost evenly distributed, so the captured curve is almost a linear straight line, and during the entire downward movement, the positions of the Hall and the magnet are very close, thus there is no situation where the initial pressing has no function.

[0045] Please refer to Figure 1 , Figure 2 and Figure 3As shown in the figure, a keyboard provided by an embodiment of the present application includes a housing assembly 1, a fixing plate 2, a key core assembly 3, and a control board 4. An accommodation cavity is formed inside the housing assembly 1, and the fixing plate 2 is arranged in the accommodation cavity. The number of key core assemblies 3 is set to be multiple, which can be specifically set according to actual needs. The multiple key core assemblies 3 are installed on the fixing plate 2, the control board 4 is arranged in the accommodation cavity, and the control board 4 is located below the fixing plate 2. The key core assembly 3 includes a sliding shaft 31 and a magnet 32, and the magnet 32 is connected to the sliding shaft 31 so that the sliding shaft 31 and the magnet 32 move up and down synchronously. The control board 4 includes a PCB board 41 and a Hall element 42 installed on the PCB board 41. The PCB board 41 has a plurality of through holes 411 corresponding one-to-one to the sliding shafts 31. The sliding shafts 31 and the magnets 32 move up and down relative to the PCB board 41 to pass through the through holes 411. The projection of the Hall element in the horizontal direction is directly opposite to the lower end of the magnet, and the N pole and S pole of the magnet 32 are in the horizontal direction.

[0046] Specifically, the housing assembly 1 has an accommodation cavity, a fixing plate 2, and a control board 4 inside. One end of the key core assembly 3 is arranged in the accommodation cavity, and the other end is exposed to the outside. The fixing plate 2 is arranged above the control board 4. The key core assembly 3 includes a sliding shaft 31 and a magnet 32, and the magnet 32 is fixedly installed inside the sliding shaft 31 so that the magnet 32 and the sliding shaft 31 move synchronously. The control board 4 includes a PCB board 41 and a Hall element 42, and the Hall element 42 is installed on the PCB board 41. A plurality of through holes 411 are arranged on the PCB board 41, and the number of through holes 411 is the same as the number of key core assemblies 3. For example, if the keyboard has 108 key positions, then there are 108 key core assemblies 3 and 108 through holes 411, and each through hole 411 corresponds to a key core assembly 3. The number of Hall elements 42 is the same as the number of through holes 411. The Hall element 42 is arranged at the edge position of the through hole 411, and the Hall element 42 is located on one side of the magnet 32 in the horizontal direction, and the lower end of the magnet is directly opposite to the Hall element. The N pole and S pole of the magnet 32 are in the horizontal direction, that is, the N pole and S pole of the magnet 32 are arranged opposite to each other left and right in the horizontal direction. The magnet is strip-shaped, and the length of the magnet is much greater than the height of the Hall so that a part of the magnet is close to the Hall during the downward movement.

[0047] The Hall component of the keyboards on the market is set directly below the magnet. When the user presses a key, the magnet is driven to move downward. The N and S poles of the magnet are arranged vertically (i.e., one above the other). The initial position of the magnet is far from the Hall element, so the initial magnetic induction line intensity is weak, which may result in no function during the initial press. In this application, the N and S poles are arranged horizontally, and the Hall element 42 is set on one side of the magnet 32 in the horizontal direction. The N and S poles of the magnet 32 are placed horizontally. During the downward movement of the magnet, a part of it is always directly opposite to the Hall element. Therefore, the magnetic induction intensity is the same at the starting position and the ending position, which can avoid the situation of no function during the initial press. It should be noted that the Hall element 42 is set at the edge position of the through hole 411, near the inner wall of the through hole of the control board. It can be set on the outer edge of the through hole or partially inserted into the through hole. The distance between the Hall element and the inner wall of the through hole can be + / - 15mm. Among them, +15mm means it is set outside the through hole, and -15mm means the Hall element can extend into the through hole, as long as it does not affect the up and down movement of the sliding shaft and the magnet.

[0048] In this embodiment, the keyboard further includes a limiting plate 5, which is used to limit the downward movement of the sliding shaft 31. The limiting plate is installed in the accommodating cavity and below the control board 4. When the user presses the key core assembly 3, the sliding shaft 31 moves downward until it hits the limiting plate 5. At this time, the sliding shaft 31 collides with the limiting plate 5 to generate vibration. The position of the vibration is far from the fixing plate 2, so the fixing plate 2 is less affected by the vibration. When the keyboard is tapped at a high frequency for a long time, the fixing plate 2 can remain stable, and the key core assembly 3 is fixedly installed on the fixing plate 2, avoiding the risk of accidental touch due to the influence of vibration on the key core assembly 3.

[0049] Please refer to Figure 3 As shown, the keyboard further includes a first sound-absorbing cotton 6 and a second sound-absorbing cotton 7. The second sound-absorbing cotton 7 and the first sound-absorbing cotton 6 are respectively arranged on the upper and lower sides of the limiting plate 5. When the sliding shaft 31 hits the limiting plate 5, noise will be generated. By arranging the second sound-absorbing cotton 7 and the first sound-absorbing cotton 6 on the upper and lower sides of the limiting plate 5, the noise generated by the sliding shaft 31 hitting the limiting plate 5 can be effectively absorbed, with good noise reduction effect and improved user experience.

[0050] Please refer to Figure 4 and Figure 5 As shown, the key core assembly 3 further includes a base 33, a transmission member 34, and a reset member 35. The base 33 is buckled on the fixing plate 2. The base 33 includes a slide rail cavity 331. The transmission member 34 is slidably arranged in the slide rail cavity 331, and the sliding shaft 31 moves synchronously with the transmission member 34.

[0051] Specifically, the key core assembly 3 includes a base 33, a transmission member 34, a sliding shaft 31, a magnet 32, and a reset member 35. The base 33 is snapped onto the fixing plate 2, and the snap structure can be used to achieve the snapping of the two. For example, an opening is provided on the fixing plate 2, and a snap structure is provided on the base 33. During installation, the base 33 can be directly snapped onto the opening position. A slide rail cavity 331 is provided at the upper end of the base 33, and the transmission member 34 is slidably disposed in the slide rail cavity 331. An installation cavity 341 is provided at the lower end of the transmission member 34, and the sliding shaft 31 is disposed in the installation cavity 341 of the transmission member 34. An installation groove is provided at the lower end of the sliding shaft 31, and the magnet 32 is fixedly installed in the installation groove. When the user uses it, the transmission member 34 is pressed to drive the sliding shaft 31 to move downward. The reset member 35 is used to reset the sliding shaft 31.

[0052] A plurality of positioning grooves 332 are provided on the side wall of the slide rail cavity 331, and a plurality of positioning buttons 342 adapted to the positioning grooves 332 are provided on the outer wall of the transmission member 34. The positioning buttons 342 and the positioning grooves 332 are used to limit the end point of the upward movement of the transmission member 34.

[0053] Specifically, the size of the slide rail cavity 331 is adapted to the outer shape size of the transmission member 34, so that the transmission member 34 can move up and down along the slide rail cavity 331. A plurality of positioning grooves 332 are provided on the side wall of the slide rail cavity 331, and a plurality of positioning buttons 342 adapted to the positioning grooves 332 are provided on the outer wall of the transmission member 34. The positioning buttons 342 can be used to movably arrange the key position in the slide rail cavity 331. After the user presses the transmission member 34, the transmission member 34 moves downward along the slide rail cavity 331, and then under the action of the reset member 35, the transmission member 34 bounces upward until the positioning button 342 of the transmission member 34 abuts against the positioning groove 332 in the slide rail cavity 331, and at this time, the transmission member 34 stops moving.

[0054] The reset member 35 is a spring. The sliding shaft 31 includes a flat plate portion 311 and a shaft portion 312, and the diameter of the flat plate portion 311 is larger than that of the shaft portion 312. A circular ring convex wall 333 protrudes from the bottom wall of the slide rail cavity 331 towards the shaft portion 312. The shaft portion 312 penetrates into the circular ring convex wall 333. The spring is sleeved on the shaft portion 312 and the circular ring convex wall 333, and one end of the spring abuts against the flat plate portion 311, and the other end abuts against the bottom wall of the slide rail cavity 331. Specifically, the sliding shaft 31 can be an integrally formed injection molded part. The flat plate portion 311 of the sliding shaft 31 abuts against the bottom of the installation cavity 341 of the buckling member, and the shaft portion 312 of the sliding shaft 31 is arranged towards the limiting plate 5. When the user presses the transmission member 34, the flat plate portion 311 slides along the installation cavity 341, and the shaft portion 312 slides along the circular ring convex wall 333 and penetrates through the circular ring convex wall 333. The spring is arranged between the flat plate portion 311 and the bottom wall of the slide rail cavity 331, and the spring is sleeved outside the shaft portion 312 and the circular ring convex wall 333. The spring can bounce the sliding shaft 31 and the transmission member 34 to the initial position above without external action until the user presses again next time.

[0055] Please refer to Figure 3 and Figure 6 As shown in the figure, the limiting plate 5 has a plurality of elastic limiting portions 51, and the elastic limiting portions 51 are arranged opposite to the shaft portion 312. In this embodiment, each elastic limiting portion 51 is arranged opposite to the shaft portion 312 of a sliding shaft 31. When the user presses the transmission member 34, the sliding shaft 31 moves downward and impacts on the elastic limiting portion 51 with a certain flexibility, which can further reduce noise and improve the shock absorption effect.

[0056] Please refer to Figure 7 As shown in the figure, in this embodiment, the limiting plate 5 also has a plurality of openings 52, and the elastic limiting portions 51 are integrally connected to the inner walls of the openings 52. The elastic limiting portion 51 includes two elastic arms 511 and a limiting platform 512. One ends of the two elastic arms 511 are respectively connected to both sides of the limiting platform 512, and the other ends are respectively connected to the inner walls of the openings 52. Specifically, a plurality of openings 52 are provided on the limiting plate 5, and an elastic limiting portion 51 is provided in each opening 52. The elastic limiting portion 51 includes a limiting platform 512 and two elastic arms 511. The limiting platform 512 is arranged at the central position of the opening 52 and is arranged opposite to the shaft portion 312 of the sliding shaft 31 so that the impact position occurs at the limiting platform 512 when the shaft portion 312 of the sliding shaft 31 moves downward. The two elastic arms 511 are respectively arranged on both sides of the limiting platform 512. One end of one elastic arm 511 is connected to the limiting platform 512, and the other end is connected to the inner wall of the opening 52. The other end of the other elastic arm 511 is connected to the limiting platform 512, and the other end is connected to the inner wall of the opening 52. The elastic arm 511 can be an arc-shaped section structure, or can be formed by connecting a plurality of straight section structures, or can be formed by connecting a straight section structure and an arc-shaped section structure. AsFigure 7 The elastic arms shown include a straight bar portion and an arc bar portion. Understandably, the elastic arms can also be other special-shaped structures as long as they can provide a certain degree of flexibility. It should be noted that the two elastic arms are centrosymmetric about the center of the limit platform.

[0057] Please refer to Figure 3 As shown, in an alternative embodiment, the keyboard further includes a bottom plate 8, a first partition 9, and a second partition 10. The first sound-absorbing cotton 6 is disposed below the limit plate 5, and the bottom plate 8 is disposed below the first sound-absorbing cotton 6. The first partition 9 is disposed above the control board 4, and the second partition 10 is disposed below the control board 4. Specifically, the housing assembly 1 of the present application includes, from bottom to top in sequence, a bottom plate 8, a first sound-absorbing cotton 6, a limit plate 5, a second sound-insulating plate 7, a second partition 10, a control board 4, a first partition 9, and a fixing plate 2. The bottom plate 8 serves as the base plate, and the first sound-absorbing cotton 6 is disposed on the bottom plate 8 to facilitate the fixing and positioning of the first sound-absorbing cotton 6. The first partition 9 and the second partition 10 are respectively disposed on the upper and lower sides of the control board 4 to protect the control board 4, insulate the control board 4, and reduce the occurrence of safety accidents. Moreover, the first partition 9 and the second partition 10 can also further reduce noise.

[0058] Please refer to Figure 2 As shown, in this embodiment, the keyboard further includes keycaps (not shown in the figure). The keycaps are installed above the transmission member 34 and protrude from the housing assembly 1 for the user to strike from the outside. The housing assembly 1 includes a front shell 11 and a bottom shell 12. The front shell 11 has a receiving cavity inside, and the bottom shell 12 covers the receiving cavity. Understandably, in this embodiment, a plurality of positioning post portions and positioning platform portions (not shown in the figure) are provided on the front shell 11 and the bottom shell 12 to position the bottom plate 8 and other components above it. These positioning post portions and positioning platform portions can be set according to actual needs and are not limited herein.

[0059] In an alternative embodiment, the present application further relates to a keyboard, comprising a housing assembly 1, a fixing plate 2, a plurality of key core assemblies 3, a control board 4, and a limiting plate 5. An accommodation cavity is formed inside the housing assembly 1; the fixing plate 2, the control board, and the limiting plate are all arranged in the accommodation cavity; the plurality of key core assemblies 3 are fixedly installed on the fixing plate 2, and the key core assembly 3 includes a sliding shaft 31 and a magnet 32 connected to the sliding shaft 31; the control board 4 is arranged in the accommodation cavity and is located below the fixing plate 2. The control board 4 includes a PCB board 41 and a Hall element 42 installed on the PCB board 41. The PCB board 41 has a plurality of through holes 411 corresponding to the sliding shafts 31 one by one; the limiting plate 5 is arranged below the control board 4, and the limiting plate 5 is used to limit the downward movement of the sliding shaft 31; wherein, the magnet 32 moves up and down relative to the PCB board 41 to pass through the through hole 411; the N pole and the S pole of the magnet 32 are in the horizontal direction, and the projection of the Hall element 42 in the horizontal direction is directly opposite to the lower end of the magnet 32; when the magnet 32 moves down to the farthest position, the projection of the Hall element 42 in the horizontal direction is directly opposite to the upper end of the magnet 32. The magnet 32 is strip-shaped. When the keyboard is not pressed, the Hall element faces the lower end of the magnet 32 (such as Figure 3 ), when the user presses the keyboard, the sliding shaft 31 and the magnet 32 move downward and hit the limiting plate 5, and are limited by the limiting plate 5. At this time, the Hall element faces the upper end of the magnet (such as Figure 8 ).

[0060] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A keyboard, characterized in that, Comprising: A housing assembly, within which a receiving cavity is formed; A fixing plate, which is arranged within the receiving cavity; A plurality of key core assemblies, which are fixedly installed on the fixing plate, and each key core assembly includes a sliding shaft and a magnet connected to the sliding shaft; A control board, which is arranged within the receiving cavity and is located below the fixing plate, and the control board includes a PCB board and a Hall element installed on the PCB board. The PCB board has a plurality of through holes corresponding to the sliding shafts one by one; Wherein, the magnet moves up and down relative to the PCB board so as to pass out from the through holes; the N pole and S pole of the magnet are in the horizontal direction, and the projection of the Hall element in the horizontal direction is directly opposite to the lower end of the magnet.

2. The keyboard according to claim 1, characterized in that, The keyboard further includes a limiting plate, which is arranged below the control board and is used for limiting the downward movement of the sliding shaft.

3. The keyboard according to claim 2, wherein The keyboard further includes a first sound-absorbing cotton and a second sound-absorbing cotton, and the second sound-absorbing cotton and the first sound-absorbing cotton are respectively arranged on the upper and lower sides of the limiting plate.

4. The keyboard according to claim 2, wherein Each key core assembly further includes a base, a transmission member and a reset member. The base is buckled on the fixing plate; the base includes a slide rail groove cavity, and the transmission member is slidably arranged within the slide rail groove cavity; the sliding shaft is connected to the lower end of the transmission member; the reset member is sleeved outside the sliding shaft and is used for resetting the sliding shaft.

5. The keyboard according to claim 4, wherein, A plurality of positioning grooves are formed on the side wall of the slide rail groove cavity, and a plurality of positioning buckles adapted to the positioning grooves are formed on the outer wall of the transmission member. The positioning buckles and the positioning grooves are used for limiting the upward movement of the transmission member.

6. The keyboard according to claim 2, characterized in that, The limiting plate has a plurality of elastic limiting portions, and the elastic limiting portions are directly opposite to the sliding shafts.

7. The keyboard according to claim 6, characterized in that, The limiting plate has a plurality of openings, and the elastic limiting portions are integrally arranged on the inner walls of the openings.

8. The keyboard according to claim 7, wherein, Each elastic limiting portion includes two elastic arms and a limiting platform. One ends of the two elastic arms are respectively connected to both sides of the limiting platform, and the other ends are respectively connected to the inner walls of the openings.

9. The keyboard according to claim 3, characterized in that, The keyboard further includes a first partition board and a second partition board. The first partition board is arranged above the control board, and the second partition board is arranged below the control board; the keyboard further includes a bottom plate, the first sound-absorbing cotton is arranged below the limiting plate, and the bottom plate is arranged below the first sound-absorbing cotton.

10. A keyboard, characterized in that, Comprising: A housing assembly, within which a receiving cavity is formed; A fixing plate, which is arranged within the receiving cavity; A plurality of key core assemblies, which are fixedly installed on the fixing plate, and each key core assembly includes a sliding shaft and a magnet connected to the sliding shaft; A control board, which is arranged within the receiving cavity and is located below the fixing plate, and the control board includes a PCB board and a Hall element installed on the PCB board. The PCB board has a plurality of through holes corresponding to the sliding shafts one by one; A limiting plate, which is arranged below the control board and is used for limiting the downward movement of the sliding shaft; Wherein, the magnet moves up and down relative to the PCB board to pass out of the through hole; the N pole and the S pole of the magnet are in the horizontal direction, and the projection of the Hall element in the horizontal direction is directly opposite to the lower end of the magnet; when the magnet moves down to the farthest position, the projection of the Hall element in the horizontal direction is directly opposite to the upper end of the magnet.

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