keys and keypads

Abstract

The application belongs to the technical field of keyboards, and particularly relates to a key and a keyboard. The key comprises a pressing shell, a first elastic member and a hammer. The pressing shell is provided with a first movable cavity and a second movable cavity which are in communication with each other. A striking groove which is in communication with the second movable cavity is arranged on the side wall of the first movable cavity. The first movable cavity is provided with a first guide. The first elastic member is connected with one end of the hammer. The other end of the hammer is provided with a striking hammer. The hammer drives the striking hammer to move between the first movable cavity and the second movable cavity. The first guide is used for guiding the striking hammer to slide into the striking groove. The striking hammer is used for colliding with the groove wall of the striking groove. In the pressing process, the hammer obtains a first elastic force which is opposite to the pressing direction. The hammer is deflected under the guidance of the guide, so that the striking hammer rotates towards the striking groove until the striking hammer slides into the striking groove and collides with the groove wall of the striking groove, thereby enabling the user to have obvious pressing touch feeling. The structure is simple and is not prone to jamming.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of keyboard, in particular to a kind of key and keyboard. BACKGROUND

[0002] The key of keyboard is generally divided into mechanical contact type and photoelectric switch type, but the existing key when using, either key touch feeling is not good, such as photoelectric switch type key;Or key touch feeling is good, but structure is complex, long time use is easy to produce pressing spring wear, cause hand feeling to be not good or be jammed, and use effect is not good. SUMMARY

[0003] The present application is to provide a kind of key and keyboard, to solve the technical problem of the key in prior art when pressing, hand feeling is not good or easy to jam.

[0004] To achieve the above object, the technical scheme applied by the present application is: a kind of key, including press shell, first elastic member and hammer, the press shell is equipped with first movable cavity and second movable cavity that are communicated with each other, the side wall of the first movable cavity is equipped with the impact slot that is communicated with the second movable cavity, the first movable cavity is equipped with first guide in, the first elastic member is connected with the one end of the hammer, the other end of the hammer is equipped with impact hammer, the hammer drives the impact hammer movement between the first movable cavity and the second movable cavity, the first guide is used to guide the impact hammer slide into the impact slot, the impact hammer is used to impact with the slot wall of the impact slot.

[0005] Optionally, the key further includes second elastic member, the hammer includes first hammer body and second hammer body connected to one end of the first hammer body, the first elastic member is connected with the first hammer body, the second elastic member is connected between the second hammer body and the cavity wall of the first movable cavity, the impact hammer is arranged on the second hammer body, the first elastic force of the first elastic member is greater than the second elastic force of the second elastic member.

[0006] Optionally, the second hammer body is equipped with guide hammer, the guide hammer is used to abut with the first guide and moves along the guide path of the first guide, the guide hammer is used to drive the impact hammer to move close to or away from the impact slot.

[0007] Optionally, the first guide has a guide slope surface, and the guide hammer moves along the surface of the guide slope.

[0008] Optionally, the key further includes a mounting shell, the press shell is movably mounted on the mounting shell, and the first elastic member is connected between the mounting shell and the first hammer body.

[0009] Optionally, the mounting shell is provided with a second guide, and an end of the first hammer body is provided with a deflection surface configured to abut against the second guide.

[0010] Optionally, the key further comprises a photosensitive component and a circuit board, the photosensitive component is electrically connected with the circuit board, the pressing shell is provided with a light shielding member, the light shielding member is movable relative to a light receiving surface of the photosensitive component, when the light shielding member is away from the light receiving surface of the photosensitive component, the photosensitive component can receive external light, when the pressing shell is pressed, the light shielding member is close to and shields the light receiving surface of the photosensitive component.

[0011] Optionally, one end of the light shielding member towards the photosensitive component is provided with a first light shielding cavity in communication with the outside, the first light shielding cavity is configured to cover the photosensitive component and shield the light receiving surface of the photosensitive component.

[0012] Optionally, the mounting shell covers the photosensitive component, the mounting shell is provided with a light transmission area for transmitting light towards the photosensitive component, the mounting shell is provided with a second light shielding cavity, one end of the second light shielding cavity towards the light transmission area is provided with a light transmission opening, the photosensitive component is located in the second light shielding cavity, and the first light shielding cavity is configured to block light from the light transmission opening to the photosensitive component.

[0013] The key provided by the embodiment of the present application has the following beneficial effects compared with the prior art: when the key is pressed, the punch hammer compresses the first elastic member under the pressing of the pressing shell, so that the punch hammer obtains a first elastic force opposite to the pressing direction, the punch hammer drives the impact hammer to abut against the side wall of the first movable cavity under the action of the first elastic member, in the process of continuous pressing, the punch hammer is deflected under the guidance of the guide, so that the impact hammer rotates towards the impact groove, the impact hammer is always subjected to the first elastic force opposite to the pressing direction in the process, until the impact hammer moves to the position of the impact groove, the impact hammer slides into the impact groove under the action of the first elastic force of the first elastic member and forms impact with the groove wall of the impact groove, so that the user has obvious pressing touch feeling, and the user has good use feeling, and the structure is simple, not easy to jam, and has good use effect.

[0014] Another technical scheme provided by the embodiment of the present application is a keyboard comprising the key.

[0015] The keyboard provided by the embodiment of the present application has good pressing touch feeling and is not easy to jam when the user presses, and the user has good use experience due to the use of the key. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 The structural schematic diagram of the key provided by the embodiment of the present application;

[0018] Figure 2 The structural schematic diagram of the key provided by the embodiment of the present application; Figure 1

[0019] Figure 3 The structural schematic diagram of the key provided by the embodiment of the present application; Figure 1 Figure 1

[0020] Figure 4 The structural schematic diagram of the key provided by the embodiment of the present application; Figure 3

[0021] Figure 5 The structural schematic diagram of the key provided by the embodiment of the present application; Figure 1 Figure 2

[0022] Figure 6 The structural schematic diagram of the key provided by the embodiment of the present application; Figure 5

[0023] Figure 7 The structural schematic diagram of the key provided by the embodiment of the present application; Figure 2

[0024] Figure 8 The structural schematic diagram of the key provided by the embodiment of the present application; Figure 2

[0025] Figure 9 The structural schematic diagram of the key provided by the embodiment of the present application. Figure 2

[0026] In the drawings, various reference signs represent:

[0027] 10—pushing shell;

[0028] 11—first movable cavity; 12—second movable cavity; 13—first guide; 14—first shell; 15—second shell; 16—light shielding member; 111—impact groove; 131—guide inclined surface; 161—first light shielding cavity;

[0029] 20—first elastic member;

[0030] 30—hammer; ​​​​​​​​​​

[0031] 31 - impact hammer; 32 - guide hammer; 33 - first hammer body; 34 - second hammer body; 331 - deflection surface;

[0032] 40 - second elastic member;

[0033] 50 - mounting housing;

[0034] 51 - light shielding housing; 52 - light transmitting housing; 53 - second guide member; 54 - pressing groove; 55 - light transmitting area; 56 - second light shielding cavity; 57 - light guide cavity; 58 - annular sleeve; 561 - light transmitting opening; 571 - light guide opening;

[0035] 60 - photosensitive assembly;

[0036] 61 - photosensitive element; 62 - light guide member;

[0037] 70 - circuit board;

[0038] 80 - LED lamp. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters indicate the same or similar elements throughout the views. The following detailed description is made in connection with the preferred embodiments illustrated in the drawings that are presented by way of example only. Figures 1 to 9 The described embodiments are examples and are intended to be illustrative of the application and are not to be understood as limiting the application.

[0040] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In addition, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] As shown in Figure 1 、 3 , 4, the key provided by the embodiment of the present application will be described. The key comprises a pressing shell 10, a first elastic member 20 and a hammer 30, the pressing shell 10 is provided with a first movable cavity 11 and a second movable cavity 12 which are in communication with each other, a side wall of the first movable cavity 11 is provided with a striking groove 111 which is in communication with the second movable cavity 12, the second movable cavity 12 is provided with a first guide member 13, the first elastic member 20 is connected with one end of the hammer 30, the other end of the hammer 30 is provided with a striking hammer 31, the hammer 30 drives the striking hammer 31 to move between the first movable cavity 11 and the second movable cavity 12, the first guide member 13 is used to guide the striking hammer 31 to slide into the striking groove 111, and the striking hammer 31 is used to strike the groove wall of the striking groove 111.

[0044] Compared with the prior art, the key provided by the embodiment of the present application, when pressed, the hammer 30 is compressed under the pressing of the pressing shell 10 to compress the first elastic member 20, so that the hammer 30 obtains a first elastic force which is opposite to the pressing direction, the hammer 30 drives the striking hammer 31 to abut against the side wall of the first movable cavity 11 under the action of the first elastic member 20, in the process of continuous pressing, the hammer 30 is deflected under the guidance of the guide member, so that the striking hammer 31 rotates towards the striking groove 111, the striking hammer 31 is always subjected to the action of the first elastic force which is opposite to the pressing direction in the process, until the striking hammer 31 moves to the position of the striking groove 111, the striking hammer 31 slides into the striking groove 111 under the action of the first elastic force of the first elastic member 20 and forms striking with the groove wall of the striking groove 111, thereby making the user have obvious pressing touch feeling, giving the user good use feeling, and the structure is simple, not easy to jam, and the use effect is good.

[0045] Among them, the first elastic member 20 can be a spring, a torsional spring or a spring sheet.

[0046] In another embodiment of the present application, as shown in Figure 2 、 8, 9, the push shell 10 includes a first shell 14 and a second shell 15, the first shell 14 is mounted on the second shell 15, the first movable cavity 11 is provided on the first shell 14 (that is, the impact groove 111 is also located on the first shell 14), and the second movable cavity 12 is provided on the second shell 15.

[0047] In another embodiment of the present application, as shown in Figure 2 、 3 , 4, the key further includes a second elastic member 40, the hammer 30 includes a first hammer body 33 and a second hammer body 34 connected to one end of the first hammer body 33, the first elastic member 20 is connected to the first hammer body 33, the second elastic member 40 is connected between the second hammer body 34 and the cavity wall of the first movable cavity 11, and the impact hammer 31 is provided on the second hammer body 34. The first elastic force of the first elastic member 20 is greater than the second elastic force of the second elastic member 40. Specifically, the second hammer body 34 moves between the first movable cavity 11 and the second movable cavity 12, the central axis of the first hammer body 33 and the central axis of the second hammer body 34 are located on the same straight line, that is, the central axis of the hammer 30; when not pressed, the second hammer body 34 is located in the second movable cavity 12; when the push shell 10 is pressed, the second hammer body 34 is driven by the first hammer body 33 to bear the first elastic force opposite to the pressing direction, and at the same time, the second hammer body 34 is subjected to the second elastic force of the second elastic member 40 in the same direction as the pressing direction. Since the first elastic force of the first elastic member 20 is greater than the second elastic force of the second elastic member 40 (the directions of the first elastic force and the second elastic force are both parallel to the central axis of the hammer 30), at this time, the second hammer body 34 abuts against the side wall of the first movable cavity 11 and has a tendency to move in a direction opposite to the pressing direction (towards the first movable cavity 11). When the impact hammer 31 on the second hammer body 34 is rotated and displaced to slide into the impact groove 111 to form an impact (at this time, the second hammer body 34 is located in the first movable cavity 11), the user feels it, then the user releases the push shell 10, so that the first elastic member 20 returns to its original state. During the recovery of the first elastic member 20, when the first elastic force of the first elastic member 20 is less than the second elastic force of the second elastic member 40 (of course, in various use cases, the second elastic member 40 and the hammer 30 also have the effect of self-weight, which is ignored here), the second elastic member 40 drives the second hammer body 34 to move away from the first movable cavity 11, that is, to make the impact hammer 31 move away from the impact groove 111, so as to form a touch feeling for the next user's pressing.

[0048] Among them, the second elastic member 40 can be a spring, a torsion spring or a spring piece.

[0049] In another embodiment of the present application, as shown in Figure 3 、 4As shown in FIG. 7, the second hammer body 34 is provided with a guide hammer 32, the guide hammer 32 is used for abutting against the first guide member 13 and moving along the guide path of the first guide member 13, and the guide hammer 32 is used for driving the impact hammer 31 to move close to or away from the impact groove 111. Specifically, by arranging the guide hammer 32 and the guide hammer 32 being perpendicular to the central axis of the second hammer body 34 (the impact hammer 30), and the guide hammer 32 being arranged in a staggered manner with the impact hammer 31, when the pressing shell 10 is pressed, the guide hammer 32 moves along the guide path of the first guide member 13, so that the impact hammer 31 generates a rotational offset and moves towards the impact groove 111 until the impact hammer 31 impacts into the impact groove 111; then, after the pressing shell 10 is released, the impact hammer 31 is guided by the guide hammer 32 to move out of the impact groove 111 and move to the original position.

[0050] In another embodiment of the present application, as shown in FIG. Figure 3 、 9 , the first guide member 13 has a guide inclined surface 131, and the guide hammer 32 moves along the surface of the guide inclined surface 131. Specifically, by arranging the guide inclined surface 131 on the first guide member 13, the guide hammer 32 generates a rotational offset movement along the surface of the guide inclined surface 131 to drive the impact hammer 31 to move close to or away from the impact groove 111, which has a simple structure and does not jam during pressing, and has good use effect.

[0051] In another embodiment of the present application, as shown in FIG. Figure 1 、 3 , 4, the key further comprises a mounting shell 50, the pressing shell 10 is movably mounted on the mounting shell 50, and the first elastic member 20 is connected between the mounting shell 50 and the first hammer body 33. Specifically, by arranging the mounting shell 50, the pressing shell 10 and the first elastic member 20 can move along the predetermined direction under the restraint of the mounting shell 50 during pressing, so as to avoid jamming or deviation. In addition, the mounting shell 50 is provided with a pressing groove 54, the central axis of the pressing groove 54 is located on the same straight line as the central axis of the impact hammer 30, and the first elastic member 20 is connected between the outer periphery of the pressing groove 54 and the first hammer body 33, so that the first elastic member 20 always provides the first elastic force on the central axis of the impact hammer 30, so as to ensure that the pressing shell 10 does not jam during pressing.

[0052] In another embodiment of the present application, as shown in FIG. Figure 3 、 4As shown, the second guide 53 is arranged on the mounting shell 50, and the end of the first hammer 33 is provided with a deflection surface 331 for abutting against the second guide 53. Specifically, by arranging the second guide 53 on the mounting shell 50, the deflection surface 331 plays a role of assisting the first guide 13 to generate a rotational deviation. In the process of abutting against the second guide 53, the second guide 53 makes the deflection direction of the first hammer 30 the same as the deflection path of the first guide 13, so that the second guide 53 further assists the first guide 13 to drive the impact hammer 31 to move close to or away from the impact groove 111, thereby ensuring the impact effect of the impact hammer 31 deviating into the impact groove 111.

[0053] In another embodiment of the present application, as shown in Figure 2 、 5 , the key further comprises a light-sensitive component 60 and a circuit board 70, the light-sensitive component 60 is electrically connected with the circuit board 70, the pressing shell 10 is provided with a light shielding piece 16, the light shielding piece 16 can move relative to the light-receiving surface of the light-sensitive component 60; when the light shielding piece 16 is away from the light-receiving surface of the light-sensitive component 60, the light-sensitive component 60 can receive external light; when the pressing shell 10 is pressed, the light shielding piece 16 approaches and shields the light-receiving surface of the light-sensitive component 60. Specifically, since the light-sensitive component 60 is electrically connected with the circuit board 70 to form an electrical path, when the light-sensitive component 60 receives light from the outside, the electrical path is in an open state; when the light-sensitive component 60 cannot receive external light, the electrical path is in a conductive state, at which time the function of the key is realized. Therefore, the user can press the pressing shell 10 to completely shield the light from the outside to the light-sensitive component 60, thereby realizing the function of the key, effectively improving the sensitivity of the key, and providing a good user experience. Moreover, since the key of the embodiment of the present application can directly receive external light, it is not necessary to additionally provide an infrared emission pair tube to provide a light source, so that the structure of the key is simpler and more compact, which is conducive to the miniaturization development of the key and reduces the manufacturing cost.

[0054] In another embodiment of the present application, as shown in Figure 2 、 5 , the end of the light shielding piece 16 towards the light-sensitive component 60 is provided with a first light shielding cavity 161 in communication with the outside, and the first light shielding cavity 161 is used for covering the light-sensitive component 60 and shielding the light-receiving surface of the light-sensitive component 60. Specifically, the light shielding piece 16 moves synchronously with the pressing shell 10, and by arranging the first light shielding cavity 161 on the light shielding piece 16, the cavity wall of the first light shielding cavity 161 is black and can completely shield light. When the user presses the pressing shell 10, the first light shielding cavity 161 completely covers the outside of the light-sensitive component 61 to block the light from the outside to the light-receiving surface of the light-sensitive component 61, thereby realizing the purpose of making the electrical path conductive.

[0055] In another embodiment of the present application, as shown in Figure 5 , 6 The mounting shell 50 is arranged on the photosensitive assembly 60, the mounting shell 50 is provided with a light transmission area 55 for transmitting light to the photosensitive assembly 60, the mounting shell 50 is provided with a second light shielding cavity 56, the second light shielding cavity 56 is provided with a light transmission opening 561 at one end facing the light transmission area 55, the photosensitive assembly 60 is arranged in the second light shielding cavity 56, and the first light shielding cavity 161 is used for blocking light from the light transmission opening 561 to the photosensitive assembly 60. Specifically, the light transmission area 55 of the mounting shell 50 can receive external light, the cavity wall of the second light shielding cavity 56 is black to block light, so that the light transmission opening 561 is the only way for light to enter the second light shielding cavity 56, which can effectively improve the light shielding efficiency of the light shielding member 16. When the pressing shell 10 is pressed, the light shielding member 16 blocks the light transmission opening 561, which effectively improves the sensitivity of the key.

[0056] In another embodiment of the present application, as shown in Figure 2 , 5 , 6, the mounting shell 50 includes a light shielding shell 51 and a light transmission shell 52 arranged on the light shielding shell 51, the second light shielding cavity 56 is arranged on the light shielding shell 51, and the light transmission shell 52 is transparent to form the light transmission area 55. Specifically, the light shielding shell 51 is a light shielding shell 52, the light transmission shell 52 is a transparent shell, and the second light shielding cavity 56 is arranged on the light shielding shell 51. When the photosensitive assembly 60 is arranged in the second light shielding cavity 56, the photosensitive assembly 60 can only receive external light through the light transmission opening 561. Then, the light transmission shell 52 is arranged on the light shielding shell 51, and the light transmission shell 52 can naturally transmit external light. Thus, the light transmission opening 561 naturally allows external light to enter the photosensitive assembly 60 in the normal state (when the key is not pressed), and the electrical path is disconnected without the need for an additional light source, effectively simplifying the structure of the key and saving the manufacturing cost of the key.

[0057] In another embodiment of the present application, as shown in Figure 5 , 6 The photoelectric switch key further includes an LED lamp 80 arranged on the circuit board 70 and electrically connected with the circuit board 70, and the LED lamp 80 emits light towards the light transmission shell 52. Specifically, the LED lamp 80 is arranged on the circuit board 70, and in the open state, the LED lamp 80 emits light towards the light transmission shell 52, so that the light transmission shell 52 can collect more intense light to irradiate the photosensitive assembly 60, thereby maintaining the sensitivity of the photosensitive assembly 60. The LED lamp 80 can be set to various types of colorful light according to needs, so that the light irradiating on the light transmission shell 52 forms a good decorative effect, providing a good visual experience for users.

[0058] In another embodiment of the present application, as shown inFigure 5 , 6 As shown, the light-shielding shell 51 is provided with a light-guiding cavity 57, and the end of the light-guiding cavity 57 facing the light-transmitting shell 52 is provided with a light-guiding opening 571. The LED lamp 80 is located inside the light-guiding cavity 57 and emits light towards the light-transmitting shell 52 through the light-guiding opening 571. Specifically, by providing a light-guiding cavity 57 on the light-shielding shell 51, the LED lamp 80 is covered inside the light-guiding cavity 57, and then the light from the LED lamp 80 is directed towards the light-transmitting shell 52 through the light-guiding opening 571, thereby achieving effective control of the light emitted by the LED lamp 80, avoiding irregular scattering of the light from the LED lamp 80, and enhancing the illumination effect on the light-transmitting shell 52.

[0059] In another embodiment of the invention, such as Figure 5 , 6 As shown, the photosensitive component 60 includes a photosensitive element 61, which is mounted on and electrically connected to the circuit board 70. The photosensitive element 61 is located within the second light-shielding cavity 56. Specifically, the photosensitive element 61 receives light from the light-transmitting opening 561. The photosensitive element 61 converts the received light signal into an electrical signal. The photosensitive element 61 forms an electrical path by connecting with a pre-set circuit module on the circuit board 70 through the emitted electrical signal. When the photosensitive element 61 receives a light signal, the electrical path is open, and there is no corresponding button function input. When the photosensitive element 61 does not receive a light signal, the electrical path is closed, and the corresponding button function is input. The circuit module on the circuit board 70 in this embodiment controls photoelectric coupling in the opposite way to conventional circuits. The circuit board 70 in this embodiment utilizes a reverse principle to achieve the button pressing function.

[0060] In another embodiment of the invention, such as Figure 5 , 6 As shown, the photosensitive component 60 also includes a light guide 62, which is disposed on the photosensitive element 61 and used to guide the light from the light-transmitting opening 561 into the photosensitive element 61. Specifically, the light guide 62 is disposed within the second light-shielding cavity 56 and located between the light-transmitting opening 561 and the photosensitive element 61, so as to guide the light at the light-transmitting opening 561 to the photosensitive element 61, allowing the photosensitive element 61 to better receive the light at the light-transmitting opening 561 and ensuring the sensitivity of the photosensitive element 61. An annular sleeve 58 is provided on the light-shielding shell 51, so that part of the light guide 62 is housed within the annular sleeve 58. The opening of the annular sleeve 58 facing the light-shielding component 16 forms the light-transmitting opening 561. Thus, when the light-shielding component 16 is pressed and moved, the first light-shielding cavity 161 can directly cover the outer periphery of the annular sleeve 58, completely blocking light from entering the light-transmitting opening 561, resulting in good performance.

[0061] The embodiment of the present application further provides a keyboard comprising the key.

[0062] The keyboard provided by the embodiment of the present application has good pressing touch and is not prone to jamming when pressed by the user, and the user has a good experience.

[0063] The above merely provides the preferred embodiments of the present application but should not be used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A key, characterized by: The key comprises a pressing shell, a first elastic member and a hammer, the pressing shell is provided with a first movable cavity and a second movable cavity which are communicated with each other, a side wall of the first movable cavity is provided with an impact groove which is communicated with the second movable cavity, the second movable cavity is provided with a first guide element, the first elastic member is connected with one end of the hammer, the other end of the hammer is provided with an impact hammer, the hammer drives the impact hammer to move between the first movable cavity and the second movable cavity, the first guide element is used for guiding the impact hammer to slide into the impact groove, and the impact hammer is used for impacting the groove wall of the impact groove. The key further comprises a photosensitive assembly and a circuit board, the photosensitive assembly is electrically connected with the circuit board, the pressing shell is provided with a light shielding element, the light shielding element can move relative to a light receiving surface of the photosensitive assembly; when the light shielding element is away from the light receiving surface of the photosensitive assembly, the photosensitive assembly can receive external light. When the pressing shell is pressed, the light shielding element is close to and shields the light receiving surface of the photosensitive assembly. One end of the light shielding element which is towards the photosensitive assembly is provided with a first light shielding cavity which is communicated with the outside, the first light shielding cavity is used for covering the photosensitive assembly and shielding the light receiving surface of the photosensitive assembly; wherein, the cavity wall of the first light shielding cavity is black and completely shields light, when a user presses the pressing shell, the first light shielding cavity is completely covered outside the photosensitive element to block the light from the outside to the light receiving surface of the photosensitive element. A mounting shell covers the photosensitive assembly, the mounting shell is provided with a light transmission area which is used for transmitting light to the photosensitive assembly, the mounting shell is provided with a second light shielding cavity, one end of the second light shielding cavity which is towards the light transmission area is provided with a light transmission opening, the photosensitive assembly is located in the second light shielding cavity, and the first light shielding cavity is used for blocking the light from the light transmission opening to the photosensitive assembly.

2. The key of claim 1, wherein: The key further comprises a second elastic member, the hammer comprises a first hammer body and a second hammer body which is connected with one end of the first hammer body, the first elastic member is connected with the first hammer body, the second elastic member is connected between the second hammer body and the cavity wall of the first movable cavity, the impact hammer is arranged on the second hammer body, and the first elastic force of the first elastic member is greater than the second elastic force of the second elastic member.

3. The key of claim 2, wherein: The second hammer body is provided with a guide hammer, the guide hammer is used for abutting against the first guide element and moving along the guide path of the first guide element, and the guide hammer is used for driving the impact hammer to move close to or away from the impact groove.

4. The key of claim 3, wherein: The first guide element has a guide inclined surface, and the guide hammer moves along the surface of the guide inclined surface.

5. Key according to any one of claims 2 to 4, characterized in that: The key further comprises a mounting shell, the pressing shell is movably mounted on the mounting shell, and the first elastic member is connected between the mounting shell and the first hammer body.

6. The key of claim 5, wherein: The mounting shell is provided with a second guide element, and the tail end of the first hammer body is provided with a deflection surface which is used for abutting against the second guide element.

7. A keyboard, characterized by: The key comprises the key according to any one of claims 1-6.

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