Keyboard

Abstract

The utility model discloses a keyboard which comprises a shell, a fixing layer, a plurality of key structures and a cut-off piece. The fixing layer is connected to the shell; the key structure is installed on the fixing layer, the key structure comprises a shaft body and a reset piece, the shaft body can slide relative to the fixing layer, and the reset piece is used for resetting the shaft body; according to the scheme, when the key structure is pressed down, the shaft body moves downwards till abutting against the cut-off piece, the key shaft and the cut-off piece collide to generate vibration, a vibration source and the fixing layer are spaced, the influence of the vibration on the fixing layer is small, and when the keyboard is knocked at high frequency, the key shaft and the cut-off piece are separated from each other. The fixing layer can be kept stable, the service life of the fixing layer is effectively prolonged, and the risk of mistaken touch caused by the fact that the key structure installed on the fixing layer is affected by vibration is avoided.

Description

Technical Field

[0001] The utility model relates to the field of external devices, in particular to a keyboard. Background Art

[0002] The keyboard is a device for inputting commands and data to operate the equipment. It is now widely used in people's work, entertainment and other scenes. At present, some keyboards on the market are equipped with a fixed layer, a circuit board is arranged between the fixed layer and the bottom shell of the keyboard, and the key structure is installed on the fixed layer. When the key structure moves downward, the circuit board can generate an induction signal through light induction, magnetic induction or contact induction to realize data input.

[0003] However, the key structure in the existing keyboard uses a fixed layer to limit the downward position of the key shaft. During the downward movement of the key shaft, it collides with the fixed layer, causing the fixed layer to vibrate, which will affect other key structures installed on the fixed layer. Long-term use can easily lead to a decrease in the stability of the fixed layer, resulting in the problem of multiple key accidental touches, thereby shortening the service life of the keyboard. Utility Model Content

[0004] The main purpose of the utility model is to provide a keyboard, aiming to reduce the vibration of the fixed layer when the keyboard is struck.

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

[0006] shell;

[0007] A fixed layer connected to the shell;

[0008] a plurality of key structures, wherein the key structures are mounted on the fixed layer, the key structures include a shaft and a reset member, the shaft can slide relative to the fixed layer, and the reset member is used to reset the shaft; and

[0009] A cut-off piece is connected to the housing, and is used to limit the downward movement of the shaft.

[0010] In some embodiments of the present invention, the cut-off member is a cut-off plate, and an edge of the cut-off plate is connected to the housing.

[0011] In some embodiments of the present invention, the cutoff plate includes a plate body and a plurality of elastic limiting portions, the edge of the plate body is connected to the shell, the plurality of elastic limiting portions are connected to the plate body, and one of the elastic limiting portions is located below one of the shaft bodies.

[0012] In some embodiments of the present invention, the plate body is provided with a plurality of limiting holes, and the elastic limiting portion is an elastic cantilever connected to the hole wall of the limiting hole.

[0013] In some embodiments of the present invention, the elastic cantilever includes two arc-shaped arms and a limit joint, one end of the two arc-shaped arms is respectively connected to the opposite sides of the limit joint, and the other end is connected to the hole wall of the limit hole.

[0014] In some embodiments of the present invention, the plate body includes a main body and a support arm, the support arm is connected to the edge of the main body, a partition opening is formed between the support arm, and the support arm is connected to the shell.

[0015] In some embodiments of the utility model, the outer shell includes a front shell and a bottom shell, the bottom shell is connected to the lower side of the front shell, the fixed layer is provided with a plurality of installation openings, the front shell cover is arranged outside the fixed layer, the front shell is provided with a clearance hole to expose the installation openings, and the cut-off plate is located between the fixed layer and the bottom shell.

[0016] In some embodiments of the present invention, the keyboard further comprises a first gasket, wherein the first gasket is arranged between the edge of the cut-off plate and the fixed layer; and / or,

[0017] The keyboard further comprises a second gasket, which is arranged between the edge of the cut-off plate and the bottom shell.

[0018] In some embodiments of the present invention, the keyboard further comprises a circuit board, the circuit board is installed in the housing, and the circuit board is located between the fixing layer and the cut-off plate;

[0019] The keyboard further comprises a first sound absorbing layer, the first sound absorbing layer is sandwiched between the cut-off plate and the circuit board, the first sound absorbing layer is provided with a plurality of avoidance holes, and the plurality of avoidance holes are aligned one by one with the plurality of shaft bodies; and / or,

[0020] The keyboard further comprises a second sound absorbing layer, and the second sound absorbing layer is sandwiched between the cut-off plate and the bottom shell.

[0021] In some embodiments of the utility model, the circuit board is provided with a plurality of key through holes and a sensing part, one of the sensing parts is provided close to one of the key through holes, the key structure further includes a mounting seat, the shaft body includes a key shaft and a triggering member installed on the key shaft, the mounting seat is aligned with the key through hole, a sliding hole is provided in the mounting seat, the key shaft is slidably installed in the sliding hole, and the triggering member is used to trigger the corresponding sensing part;

[0022] The reset member is a reset spring, and two ends of the reset spring are respectively connected to the mounting seat and the key shaft.

[0023] Through the above scheme, when the key structure is pressed, the shaft moves downward until it hits the cut-off piece, and the key shaft collides with the cut-off piece to generate vibration. The vibration source is spaced apart from the fixed layer, and the fixed layer is less affected by the vibration. When the keyboard is struck at a high frequency, the fixed layer can remain stable, effectively extending the life of the fixed layer and avoiding the risk of accidental touch due to the key structure installed on the fixed layer being affected by the vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a keyboard embodiment provided by the utility model;

[0026] Figure 2 An exploded view of an embodiment of a keyboard provided by the utility model;

[0027] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0028] Figure 4 This is an exploded view of an embodiment of the key structure of the utility model;

[0029] Figure 5 A cross-sectional view of an embodiment of a keyboard provided by the utility model;

[0030] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0031] Description of Figure Numbers:

[0032] 100, keyboard; 10, shell; 101, installation port; 11, fixing layer; 12, surface shell; 121, clearance hole; 20, bottom shell; 30, circuit board; 311, key position through hole; 32, sensing part; 40, key structure; 41, mounting seat; 411, sliding hole; 42, reset member; 43, key shaft; 44, trigger member; 45, key cap; 50, cut-off member; 50', cut-off plate; 51, plate body; 511, main body; 512, support arm; 513, limit hole; 514, partition mouth; 52, elastic limit part; 52', elastic cantilever; 521, arc arm; 522, limit joint; 61, first gasket; 62, second gasket; 71, first sound absorbing layer; 711, avoidance hole; 72, second sound absorbing layer.

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0037] See also Figures 1 to 6 The utility model proposes a keyboard 100, including a shell 10, a fixed layer 11, a plurality of key structures 40 and a cut-off piece 50; the fixed layer 11 is connected to the shell 10; the key structure 40 is installed on the fixed layer 11, the key structure 40 includes a shaft and a reset piece 42, the shaft can slide relative to the fixed layer 11, and the reset piece 42 is used to reset the shaft; the cut-off piece 50 is connected to the shell 10, and the cut-off piece 50 is used to limit the downward movement of the shaft.

[0038] Through the above scheme, when the key structure 40 is pressed, the shaft moves downward until it hits the cut-off piece 50, and the key shaft 43 collides with the cut-off piece 50 to generate vibration. The vibration source is spaced apart from the fixed layer 11, and the fixed layer 11 is less affected by the vibration. When the keyboard 100 is struck at a high frequency, the fixed layer 11 can remain stable, effectively extending the life of the fixed layer 11 and avoiding the risk of accidental touch of the key structure 40 installed on the fixed layer 11 due to the influence of vibration.

[0039] The above-mentioned shell 10 is generally made of plastic material, such as PC plastic, ABS plastic, PVC plastic, etc. The above-mentioned fixing layer 11 can be snap-connected to the shell 10, or can be integrally formed, depending on the specific situation and is not limited here.

[0040] The above-mentioned key structure 40 generally also includes a keycap 45 and a mounting seat 41. The keycap 45 is installed on the top of the key shaft 43; the mounting seat 41 is generally provided with a sliding hole 411 and an upward limit structure. The key shaft 43 is slidably installed in the sliding hole, and the upward limit structure is engaged with the snap-fit ​​of the key shaft 43 to prevent the key shaft 43 from slipping out of the sliding hole 411.

[0041] The structures of the above-mentioned cut-off member 50 are various. In some embodiments of the present invention, the cut-off member 50 is a limit column connected to the shell, and a plurality of limit columns are provided. Each limit column is respectively positioned opposite to the key shaft 43 to limit the key shaft 43 from moving downward.

[0042] Preferably, in some embodiments of the present invention, the cut-off member 50 is a cut-off plate 50', and the edge of the cut-off plate 50' is detachably connected to the housing 10. In this way, when the cut-off plate 50' is damaged, only the cut-off plate 50' can be removed for replacement, which has low replacement cost and is convenient for assembly.

[0043] The above-mentioned cut-off plate 50' can be arranged above the fixed layer 11, and can also be arranged below the fixed layer 11. In some embodiments of the utility model, the cut-off plate 50' is arranged above the fixed layer 11, and the cut-off plate 50' is provided with an avoidance hole 711. The side wall of the key shaft 43 is provided with a limiting protrusion. When the key shaft 43 moves downward in the avoidance hole 711, the limiting protrusion presses against the upper surface of the cut-off plate 50', thereby limiting the movement of the key shaft 43.

[0044] In order to further improve the shock absorption effect, in some embodiments of the present invention, the cutoff plate 50' includes a plate body 51 and a plurality of elastic limiting parts 52, the edge of the plate body 51 is fixed to the housing 10, the plurality of elastic limiting parts 52 are connected to the plate body 51, and one elastic limiting part 52 is located below a shaft body. In this way, when the key shaft 43 contacts the elastic limiting part 52, a flexible impact is generated, and the shock absorption effect is better. In addition, since the vibration source is located below the fixed layer 11, the knocking sound generated by the vibration source will be greatly weakened when it is transmitted to the keyboard 100, which has a noise reduction effect.

[0045] There are many specific implementations of the elastic limiting portion 52. In some embodiments of the present invention, the elastic limiting portion 52 is a silicone pad connected to the top surface of the plate 51. Figure 2 In other embodiments of the present invention, the plate body 51 is provided with a plurality of limiting holes 513, and the elastic limiting portion 52 is an elastic cantilever 52' ​​connected to the hole wall of the limiting hole 513. In this way, the elastic limiting portion 52 and the plate body 51 can be an integral structure, which can be directly obtained by hot pressing, injection molding or 3D printing, etc., which is conducive to reducing the number of parts and reducing the complexity of the structure. In addition, the elastic limiting portion 52 will not increase the overall thickness of the cut-off member 50, which is conducive to improving the compactness of the structure.

[0046] Furthermore, in some embodiments of the present invention, the elastic cantilever 52' ​​includes two arc-shaped arms 521 and a limit joint 522, one end of the two arc-shaped arms 521 is respectively connected to the opposite sides of the limit joint 522, and the other end is connected to the hole wall of the limit hole 513. With such a configuration, the elastic cantilever 52' ​​has a better shock absorbing effect.

[0047] In some embodiments of the present invention, the plate body 51 includes a main body 511 and a support arm 512, the support arm 512 is connected to the edge of the main body 511, and a partition opening 514 is formed between the support arm 512, and the support arm 512 is connected to the housing 10. In this way, when the vibration propagates from the center of the plate body 51 to the edge, the vibration wave passing through the partition opening 514 is isolated, and only a small part of the vibration propagates to the support arm 512, so that the shock absorption effect is better.

[0048] In some embodiments of the present invention, the housing 10 includes a front housing 12 and a bottom housing 20, the bottom housing 20 is connected to the lower side of the front housing 12, the fixing layer 11 is provided with a plurality of mounting openings 101, the front housing 12 is covered outside the fixing layer, the front housing is provided with a clearance hole 121 to expose the mounting openings 101, and the stop plate 50' is located between the fixing layer 11 and the bottom housing 20. In this way, the housing 10 has good structural stability and is easy to assemble.

[0049] In some embodiments of the present invention, the keyboard 100 further includes a first gasket 61, which is arranged between the edge of the cut-off plate 50' and the surface shell 12. In other embodiments of the present invention, the keyboard 100 further includes a second gasket 62, which is arranged between the edge of the cut-off plate 50' and the bottom shell 20. The shock absorption effect is further improved.

[0050] In some embodiments of the present invention, the keyboard 100 further includes a circuit board 30, which is installed in the housing 10 and is located between the fixing layer 11 and the cut-off plate 50'; the keyboard 100 further includes a first sound absorbing layer 71, which is sandwiched between the cut-off plate 50' and the circuit board 30, and the first sound absorbing layer 71 is provided with a plurality of avoidance holes 711, which are aligned one by one with the plurality of key shafts 43. In other embodiments of the present invention, the keyboard 100 further includes a second sound absorbing layer 72, which is sandwiched between the cut-off plate 50' and the bottom shell 20. In this way, the two sound absorbing layers can play a role in sound absorption, and the noise reduction effect is better.

[0051] The circuit board 30 can be connected and fixed to the front shell 12 or the bottom shell 20. In some embodiments of the present invention, the circuit board 30 is connected to the side of the fixing layer 11 facing the bottom shell 20. In this way, on the one hand, the circuit board 30 is close to the front shell 12, which facilitates the induction part 32 to be triggered by the triggering member 44. On the other hand, the circuit board 30 can block the sound and achieve better noise reduction effect.

[0052] Combination Figure 4 In some embodiments of the utility model, the circuit board is provided with a plurality of key through holes 311 and a sensing part 32, a sensing part 32 is arranged near a key through hole 311, the key structure 40 also includes a mounting seat 41, the shaft body includes a key shaft 43 and a trigger member 44 installed on the key shaft 43, the mounting seat is aligned with the key through hole 311, a sliding hole 411 is opened in the mounting seat 41, the key shaft 43 is slidably installed in the sliding hole 411, and the trigger member 44 is used to trigger the corresponding sensing part 32; the reset member 42 is a reset spring, and the two ends of the reset spring are respectively connected to the mounting seat 41 and the key shaft 43.

[0053] There are various types of triggering member 44 and sensing part 32. For example, the triggering member 44 is a magnetic member, and the sensing part 32 is a Hall element. When the magnetic member moves under the drive of the key shaft 43, the Hall element senses the change of the surrounding magnetic field and generates an induction signal. For another example, the triggering member 44 is a reflective member, and the sensing part 32 is a photoelectric sensor. When the key is pressed, the detection light emitted by the transmitting end of the photoelectric sensor is irradiated to the reflective member and then reflected and received by the receiving end, thereby generating an induction signal. There are many specific implementations of the triggering member 44 and the sensing part 32, which are not listed here one by one.

[0054] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A keyboard (100), characterized in that: include: Housing (10); A fixing layer (11) connected to the outer shell (10); A plurality of key structures (40), wherein the key structures (40) are mounted on the fixed layer (11), and the key structures (40) comprise a shaft body and a reset member (42), wherein the shaft body can slide relative to the fixed layer (11), and the reset member (42) is used to reset the shaft body; as well as A cut-off member (50) is connected to the housing, and the cut-off member (50) is used to limit the downward movement of the shaft body.

2. The keyboard (100) according to claim 1, characterized in that: The cut-off member (50) is a cut-off plate (50'), and the edge of the cut-off plate (50') is connected to the housing (10).

3. The keyboard (100) according to claim 2, characterized in that: The stop plate (50') comprises a plate body (51) and a plurality of elastic limiting portions (52), the edge of the plate body (51) is connected to the housing (10), the plurality of elastic limiting portions (52) are connected to the plate body (51), and one of the elastic limiting portions (52) is located below one of the shaft bodies.

4. The keyboard (100) according to claim 3, characterized in that: The plate body (51) is provided with a plurality of limiting holes (513), and the elastic limiting portion (52) is an elastic cantilever (52') connected to the hole wall of the limiting hole (513).

5. The keyboard (100) according to claim 4, characterized in that: The elastic cantilever (52') comprises two arc-shaped arms (521) and a limiting joint (522), one end of the two arc-shaped arms (521) is respectively connected to the opposite sides of the limiting joint (522), and the other end is connected to the hole wall of the limiting hole (513).

6. The keyboard (100) according to claim 3, characterized in that: The plate body (51) comprises a main body (511) and a support arm (512), wherein the support arm (512) is connected to the edge of the main body (511) and a partition opening (514) is formed between the support arm (512), and the support arm (512) is connected to the housing (10).

7. The keyboard (100) according to any one of claims 2 to 6, characterized in that: The housing (10) comprises a front shell (12) and a bottom shell (20), wherein the bottom shell (20) is connected to the lower side of the front shell (12), the fixing layer (11) is provided with a plurality of mounting openings (101), the front shell (12) is covered outside the fixing layer, the front shell is provided with a clearance hole (121) to expose the mounting openings (101), and the stop plate (50') is located between the fixing layer (11) and the bottom shell (20).

8. The keyboard (100) according to claim 7, characterized in that: The keyboard (100) further comprises a first gasket (61), wherein the first gasket (61) is arranged between the edge of the cut-off plate (50') and the fixing layer (11); and / or, The keyboard (100) further comprises a second gasket (62), wherein the second gasket (62) is arranged between the edge of the cut-off plate (50') and the bottom shell (20).

9. The keyboard (100) according to claim 7, characterized in that: The keyboard further comprises a circuit board (30), the circuit board being installed in the housing (10), and the circuit board (30) being located between the fixing layer (11) and the cut-off plate (50'); The keyboard (100) further comprises a first sound absorbing layer (71), the first sound absorbing layer (71) being sandwiched between the cut-off plate (50') and the circuit board (30), the first sound absorbing layer (71) being provided with a plurality of avoidance holes (711), the plurality of avoidance holes (711) being aligned one by one with the plurality of shaft bodies; and / or, The keyboard (100) further comprises a second sound absorbing layer (72), wherein the second sound absorbing layer (72) is sandwiched between the cut-off plate (50') and the bottom shell (20).

10. The keyboard (100) according to claim 9, characterized in that: The circuit board is provided with a plurality of key through holes (311) and a sensing part (32), one of the sensing parts (32) is arranged close to one of the key through holes (311), the key structure (40) further comprises a mounting seat (41), the shaft body comprises a key shaft (43) and a trigger member (44) mounted on the key shaft (43), the mounting seat is aligned with the key through hole (311), a sliding hole (411) is provided in the mounting seat (41), the key shaft (43) is slidably mounted in the sliding hole (411), and the trigger member (44) is used to trigger the corresponding sensing part (32); The reset member (42) is a reset spring, and two ends of the reset spring are respectively connected to the mounting seat (41) and the key shaft (43).

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