Key assembly, keyboard and electronic equipment

Abstract

The embodiment of the invention provides a key assembly, a keyboard and electronic equipment, and relates to the field of keyboards. The mechanical performance of the keyboard is improved. According to the specific scheme, the key assembly comprises a key cap, a first support, a second support, a floating frame and an elastic body. The first support and the second support are rotatably connected and are in an X shape, and one end of the first support and one end of the second support are both connected with the key cap; the side, away from the key cap, of the first support and the side, away from the key cap, of the second support abut against the floating frame. The elastic body is elastically connected with one side, deviating from the key cap, of the floating frame. Therefore, on the basis of the same key travel of the key assembly, the compression ratio of the elastic body can be increased, the internal stress of the elastic body in a compressed state is reduced, the mechanical reliability of the elastic body is improved, and the service life of the key assembly is prolonged.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of keyboard technology, and in particular to a key assembly, a keyboard, and an electronic device. Background Art

[0002] Keyboard input is the main way to input information, and it is used frequently. Electronic devices such as computers, mobile phones, and game consoles are all equipped with keyboards. Among them, the key travel is an important factor affecting the user's typing feel. Increasing the key travel can significantly improve the typing feel, but a large key travel will reduce the mechanical reliability of the key and affect the service life of the electronic device. Summary of the invention

[0003] The embodiments of the present application provide a key assembly, a keyboard and an electronic device to solve the problem of poor mechanical performance of keyboard keys.

[0004] In order to achieve the above-mentioned purpose, this application adopts the following technical solution.

[0005] In the first aspect, the embodiment of the present application provides a key assembly. The key assembly includes a keycap, a first bracket, a second bracket, a floating bracket, and an elastic body. The first bracket and the second bracket are rotatably connected and in an X shape, one end of the first bracket and one end of the second bracket are both connected to the keycap; the side of the first bracket away from the keycap and the side of the second bracket away from the keycap are both in contact with the floating bracket; the elastic body is elastically connected to the side of the floating bracket away from the keycap. In this way, after the user applies force to the keycap, the force is transmitted to the first bracket and the second bracket through the keycap to make the first bracket and the second bracket rotate relative to each other, thereby moving the keycap. Because the side of the first bracket away from the keycap and the side of the second bracket away from the keycap are both in contact with the floating bracket. Then part of the force transmitted to the first bracket and the second bracket is transmitted to the floating bracket, and because the elastic body is elastically connected to the side of the floating bracket away from the keycap, the force transmitted to the floating bracket is applied to the elastic body to deform the elastic body, and the floating bracket and the elastic body move together. When the force applied by the user to the keycap disappears, the elastic body deforms to cause the floating frame to move in a direction close to the keycap and push the keycap, the first bracket and the second bracket to reset. On the basis of the same key travel of the key assembly, the setting of the floating frame can reduce the deformation of the elastic body, reduce the internal stress of the elastic body after deformation, improve the problem of reduced mechanical reliability of the elastic body after multiple deformations, improve the mechanical properties of the elastic body, and thus improve the mechanical properties of the key assembly.

[0006] In combination with the first aspect, in some achievable methods, the first bracket is provided with a receiving hole, and the floating bracket includes a mounting portion, a first abutting portion, and a second abutting portion. The first abutting portion and the second abutting portion are both connected to the mounting portion; the mounting portion is located in the receiving hole and is slidably connected to the receiving hole; the elastomer is elastically connected to a side of the mounting portion away from the keycap; the first abutting portion abuts against a side of the first bracket away from the keycap; the second abutting portion abuts against a side of the second bracket away from the keycap. Because the mounting portion is located in the receiving hole and is slidably connected to the receiving hole; the mounting portion does not interfere with the relative movement of the first bracket and the second bracket, and the first bracket and the floating bracket partially overlap in the deformation direction of the elastomer, thereby reducing the space occupied by the first bracket and the elastomer and reducing the volume of the key assembly.

[0007] In combination with the first aspect, in some achievable manners, the second bracket is provided with a through hole, the second abutting portion passes through the through hole and is slidably connected to the through hole, the connecting end of the second abutting portion is connected to the mounting portion, and the free end of the second abutting portion abuts against a side of the second bracket away from the keycap. Thus, the connecting end of the second abutting portion can be located on a side of the second bracket facing the keycap, and the free end can abut against a side of the second bracket away from the keycap.

[0008] In combination with the first aspect, in some achievable ways, the receiving hole penetrates the first bracket along the thickness direction of the keycap. Thus, the surface of the mounting portion facing the keycap can be located on the side of the receiving hole facing the keycap, reducing the volume of the keycap assembly.

[0009] In combination with the first aspect, in some achievable embodiments, the first bracket includes a first support portion and a first frame. One end of the first support portion is connected to the first frame, and the other end is connected to the keycap. The second bracket includes a second support portion and a second frame; one end of the second support portion is connected to the second frame, and the other end is connected to the keycap. One end of the first frame facing the first support portion and one end of the second frame facing the second support portion are rotatably connected. The side of the first support portion facing away from the keycap and the side of the second support portion facing away from the keycap are both in contact with the floating frame. As a result, the distance between the floating frame and the keycap is smaller, and the size of the elastomer can be increased under the same key travel. Elastomers of larger size have the advantages of high mechanical strength and easy processing.

[0010] Alternatively, the side of the first frame body facing away from the keycap and the side of the second frame body facing away from the keycap are both in contact with the floating frame. In this way, the distance between the floating frame and the keycap is larger, and the size of the elastic body can be reduced when the key travel is the same. The smaller size of the elastic body uses less material. Alternatively, when the size of the elastic body is the same, the key travel can be increased.

[0011] In combination with the first aspect, in some achievable ways, the floating frame is provided with a receiving groove, the opening of the receiving groove faces the elastic body, and the vertical projection of the elastic body on the floating frame overlaps at least partially with the opening; when part of the elastic body is located in the receiving groove, the elastic body is in a compressed state. In this way, the elastic body in a compressed state has elastic potential energy, and part of the elastic body is located in the receiving groove, which can increase the space for accommodating the elastic body, release part of the internal stress of the elastic body in a compressed state, and avoid the internal stress concentration causing damage to the elastic body.

[0012] In conjunction with the first aspect, in some achievable manners, the key assembly further comprises a glue layer, and the elastic body is connected to the side of the floating frame away from the key cap through the glue layer. In this way, the elastic body and the floating frame are connected through the glue layer, the elastic body and the floating frame are not easily separated, and there is almost no sliding friction between the elastic body and the floating frame, thereby avoiding the elastic body from being damaged due to sliding friction. In addition, the elastic body and the floating frame can be pre-connected through the glue layer, thereby improving the assembly efficiency of the key assembly.

[0013] In combination with the first aspect, in some practicable manners, the elastic body abuts against a side of the floating frame that faces away from the keycap, thereby the abutment can also transfer the force between the elastic body and the floating frame.

[0014] In combination with the first aspect, in some achievable manners, the key assembly further includes a substrate, one end of the first bracket facing away from the keycap and one end of the second bracket facing away from the keycap are both connected to the substrate, and the substrate is elastically connected to a side of the elastic body facing away from the floating frame. Thus, the substrate provides a fulcrum for the first bracket, the second bracket and the elastic body.

[0015] In the second aspect, an embodiment of the present application provides a key assembly, which includes a keycap, a first bracket, a second bracket, a floating bracket, and an elastic body. The first bracket and the second bracket are rotatably connected and are in an X shape, one end of the first bracket and one end of the second bracket are both connected to the keycap; the first bracket abuts against the side away from the keycap, and the second bracket is rotatably connected to the floating bracket; the elastic body is elastically connected to the side of the floating bracket away from the keycap. In this way, when the keycap receives the force pressed by the user, the force is transmitted to the first bracket and the second bracket to make the first bracket and the second bracket move away from the keycap. The second bracket presses the floating bracket to make the floating bracket press the elastic body. Because the floating bracket is rotatably connected to the first bracket, the floating bracket can move in the direction away from the keycap, and the floating bracket will not interfere with the relative rotation of the first bracket and the second bracket.

[0016] In a third aspect, an embodiment of the present application provides a keyboard. The keyboard comprises: a main body and any one of the key components provided in the first aspect or the second aspect; the end of the elastic body away from the floating frame is elastically connected to the main body, and the end away from the keycap and the end of the second bracket away from the keycap are both connected to the main body. Because the key component has the advantage of good mechanical reliability, the keyboard including the key component also has the advantage of good mechanical reliability.

[0017] In a fourth aspect, an embodiment of the present application provides an electronic device. The electronic device comprises: a display screen and any one of the keyboards provided in the third aspect; the display screen is connected to the keyboard signal. Since the keyboard has excellent mechanical properties, the mechanical properties of the electronic device including the keyboard are also better, which is conducive to extending the service life of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of an electronic device.

[0019] Figure 2 A schematic diagram of the structure of a key assembly provided in an embodiment of the present application.

[0020] Figure 3a The figure is a schematic diagram of the structure of a key in the related art.

[0021] Figure 3b for Figure 3a Schematic diagram of the structure with the rubber cylinder in a compressed state.

[0022] Figure 4a for Figure 2 A structural schematic diagram of the button component from another perspective is shown in FIG.

[0023] Figure 4b for Figure 4a Schematic diagram of the cross-sectional structure of the BB surface.

[0024] Figure 5a A schematic diagram of the exploded structure of the key assembly provided in an embodiment of the present application.

[0025] Figure 5b A schematic diagram of the exploded structure of the first bracket, the second bracket and the keycap provided in an embodiment of the present application.

[0026] Figure 6a A schematic diagram of the principles of a key assembly provided in an embodiment of the present application.

[0027] Figure 6b A schematic diagram of the principles of another key assembly provided in an embodiment of the present application.

[0028] Figure 7a A schematic diagram of the exploded structure of the first bracket, the second bracket and the floating bracket provided in an embodiment of the present application.

[0029] Figure 7b A schematic diagram of the exploded structure of the first bracket and the floating bracket provided in an embodiment of the present application.

[0030] Figure 7c A schematic structural diagram of a first bracket and a floating bracket provided in an embodiment of the present application.

[0031] Figure 7d A schematic diagram of the structure of the second bracket and the floating bracket provided in an embodiment of the present application.

[0032] Figure 8 A schematic diagram of the structure of another key assembly provided in an embodiment of the present application.

[0033] In the figure: 001-button; 002-top cover; 003-scissor frame; 004-rubber tube; 005-base; 10-electronic device; 20-display screen; 30-keyboard; 31-button assembly; 32-main body; 33-housing; 101-accommodating hole; 110-first bracket; 111-first support part; 112-first frame; 113-second rotating part; 114-rotating shaft; 115-step surface; 120-second bracket; 121-second support part; 122-second frame; 123-second Two sliding parts; 124-through hole; 130-keycap; 131-cap body; 132-first rotating part; 133-first sliding part; 134-slide groove; 140-floating frame; 141-first abutting part; 142-second abutting part; 143-installation part; 144-connecting end; 145-free end; 146-reinforcing rib; 147-accommodating groove; 148-opening; 150-elastic body; 160-substrate; 161-circuit board; 162-carrying plate; 201-first end; 202-second end. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0035] In the following, the terms "first", "second", etc. are used only for convenience of description and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" may be defined including but not limited to the orientation relative to the schematic placement of the components in the drawings. It should be understood that these directional terms may be relative concepts, which are used for relative description and clarification, and may change accordingly according to changes in the orientation of the components in the drawings.

[0037] In this application, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, the term "electrical connection" can be a direct electrical connection or an indirect electrical connection through an intermediate medium.

[0038] The embodiment of the present application provides an electronic device, and the embodiment of the present application does not limit the type of the electronic device, such as a desktop computer, a laptop computer, a tablet computer or a personal digital assistant (PDA) for light office use, a mobile phone, a game console, etc. Figure 1 The electronic device is described as a laptop computer as an example.

[0039] Figure 1 FIG. 1 is a schematic diagram of the structure of an electronic device 10. Figure 1 The electronic device 10 includes a display screen 20 and a keyboard 30, and the display screen 20 and the keyboard 30 are connected by signals. For example, the display screen 20 can be connected to the keyboard 30 through a physical line that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). Alternatively, the display screen 20 and the keyboard 30 can be connected wirelessly via Bluetooth or the like. The display screen 20 is used to display the input operation of the keyboard 30.

[0040] In some embodiments, the display screen 20 may include a liquid crystal display panel (LCD), a light emitting diode (LED) display panel, or an organic light emitting semiconductor (OLED) display panel, etc., but the embodiments of the present application do not limit this.

[0041] Exemplarily, the keyboard 30 includes a main body 32 and a plurality of key assemblies 31. The plurality of key assemblies 31 are all connected to the main body 32. In some examples, the electronic device 10 also includes a housing 33, the display screen 20 is connected to the housing 33, and the housing 33 has a protective and dustproof function. The main body 32 is located in the housing 33, and the housing 33 is provided with a plurality of key holes, and a key assembly 31 is slidably connected to a key hole. The main body 32 is connected to the display screen 20 by signal. The key assembly 31 inputs information, and the main body 32 processes the information into display information and sends it to the display screen 20, and the display screen 20 displays an image according to the display information. In some embodiments, the electronic device 10 may also include a battery (not shown in the figure) and other structures, and the battery may be arranged in the housing 33, and the battery and the key assembly 31 are electrically connected.

[0042] Figure 2 A schematic diagram of the structure of the button assembly 31 provided in an embodiment of the present application. Figure 2 In the embodiment, the key assembly 31 includes a first bracket 110, a second bracket 120, a keycap 130, a floating bracket 140 and an elastomer 150. The elastomer 150, the floating bracket 140 and the keycap 130 are stacked. The first bracket 110 and the second bracket 120 are rotatably connected. The first bracket 110 and the second bracket 120 are connected to each other to form an X shape. One end of the first bracket 110 and one end of the second bracket 120 are both connected to the keycap 130. The side of the first bracket 110 facing away from the keycap 130 and the side of the second bracket 120 facing away from the keycap 130 are both in contact with the floating bracket 140, and the elastomer 150 is elastically connected to the side of the floating bracket 140 facing away from the keycap 130.

[0043] The elastic connection between the elastic body 150 and the floating frame 140 means that force can be transmitted between the elastic body 150 and the floating frame 140. For example, the elastic force of the elastic body 150 can be transmitted to the floating frame 140, and the force of the floating frame 140 on the elastic body 150 can cause the elastic body 150 to be compressed or stretched.

[0044] Figure 3a It is a structural schematic diagram of a key 001 of the related art. Figure 3aIn the embodiment, the key 001 includes a top cover 002, a scissor frame 003, a rubber tube 004 and a base 005. The top cover 002, the scissor frame 003 and the base 005 are stacked, one end of the scissor frame 003 is slidably connected to the top cover 002, and the other end of the scissor frame 003 is rotatably connected to the base 005. The rubber tube 004 is located between the top cover 002 and the base 005, and the opposite ends of the rubber tube 004 are elastically connected to the top cover 002 and the base 005 respectively. When the user presses the top cover 002, the top cover 002 applies a force to the scissor frame 003 to move the top cover 002 close to the base 005. At the same time, the above-mentioned force deforms the rubber tube 004. When the force of the user pressing the top cover 002 disappears, the rubber tube 004 is reset. Among them, the maximum distance that the top cover 002 moves toward the base 005 is the key travel of the key 001. Figure 3a In the example, when the force of the user pressing the top cover 002 disappears, the height of the rubber tube 004 is a2. If the key travel is a1, the maximum distance that the top cover 002 moves toward the base 005 is a1, and accordingly, the deformation amount of the rubber tube 004 is also a1. Figure 3a In the embodiment, the deformation amount of the rubber cylinder 004 is equal to the key travel. If the key travel is increased, the deformation amount a1 of the rubber cylinder 004 is also increased accordingly.

[0045] Figure 3b for Figure 3a Schematic diagram of the structure of the middle rubber tube 004 in a compressed state. Figure 3b In the figure, the maximum compression amount of the rubber tube 004 after the key 001 is pressed is a1. The compression ratio of the rubber tube 004 is (a2-a1) / a2. If the key travel increases, the deformation amount a1 increases, and the compression ratio decreases. A small compression ratio will cause the rubber tube 004 to break or lose elasticity after multiple deformations, which will reduce the mechanical reliability of the key 001 and affect the service life of the keyboard.

[0046] The key assembly 31 provided in the embodiment of the present application has the advantages of good mechanical properties and excellent reliability.

[0047] In the embodiment of the present application, for the convenience of description, the direction in which the keycap 130 moves is defined as the z direction, that is, the elastic body 150 , the floating frame 140 and the keycap 130 are stacked along the z direction.

[0048] Figure 4a for Figure 2 A structural schematic diagram of the button assembly 31 from another perspective is shown in FIG. Figure 4b for Figure 4a Schematic diagram of the cross-sectional structure of the BB surface. Figure 4bIn the embodiment, after the user applies force F to the keycap 130, the force F is transmitted to the first bracket 110 and the second bracket 120 through the keycap 130, so that the first bracket 110 and the second bracket 120 move relative to the keycap 130, thereby causing the keycap 130 to move along the z direction. Because the side of the first bracket 110 away from the keycap 130 and the side of the second bracket 120 away from the keycap 130 are both in contact with the floating bracket 140. Then, part of the force transmitted to the first bracket 110 and the second bracket 120 is transmitted to the floating bracket 140, and because the elastic body 150 is elastically connected to the side of the floating bracket 140 away from the keycap 130, the force transmitted to the floating bracket 140 acts on the elastic body 150 to deform the elastic body 150, and the floating bracket 140 moves along the z direction while compressing the elastic body 150. When the force F applied by the user to the keycap 130 disappears, the elastic body 150 deforms to make the floating frame 140 move in a direction close to the keycap 130 and push the keycap 130 , the first bracket 110 and the second bracket 120 to reset.

[0049] Because the elastomer 150 and the floating frame 140 are elastically connected, the force applied by the user to the keycap 130 causes the floating frame 140 to move in the direction close to the keycap 130, thereby compressing the elastomer 150. Because there is a distance between the surface of the floating frame 140 facing the elastomer 150 and the surface of the keycap 130 facing the elastomer 150, on the basis of the same size of the elastomer 150, the aforementioned distance can increase the key travel and improve the user experience. On the basis of the equal key travel of the key assembly 31, the aforementioned distance can reduce the size of the elastomer 150 in the free state, increase the compression ratio of the compressed elastomer 150, and improve the reliability of the elastomer 150. Therefore, the distance between the surface of the floating frame 140 facing the elastomer 150 and the surface of the keycap 130 facing the elastomer 150 can be adjusted according to the requirements of the key travel size and the compression ratio of the elastomer 150, so that the key assembly 31 has the advantages of a larger key travel and higher reliability.

[0050] Figure 4b In the figure, the magnitude of the force F applied by the user to the keycap 130 is zero. When the magnitude of F is zero, the distance between the floating frame 140 and the keycap 130 along the z direction is h1; the height of the elastomer 150 along the z direction is h2. When the keycap 130 moves to the maximum distance, the dimensional change of the elastomer 150 along the z direction is n (not marked in the figure). The compression ratio of the elastomer 150 is (h2-n) / h2. The key travel of the key assembly 31 is the maximum distance that the keycap 130 moves along the z direction. If the key travel of the key assembly 31 is H; then H=n+h1. That is, the compression ratio of the elastomer 150 is (h2+h1-H) / h2. Based on the above, the compression ratio of the rubber tube 004 in Figure 3 is equal to (a2-a1) / a2. If the compression ratio of the rubber cylinder 004 in FIG. 3 and the elastic body 150 of the present application is the same, further, if the height a2 of the rubber cylinder 004 is equal to the height a2 of the elastic body 150 in FIG. 3 when the force of the user pressing the top cover 002 disappears, Figure 4b The height h2 of the elastomer 150 along the z direction is also the same. Then the key travel H of the key assembly 31 provided by the present application is greater than a1 in Figure 3, which can optimize the user experience. On the contrary, if the compression ratio of the rubber tube 004 in Figure 3 and the elastomer 150 of the present application is the same, and the key travel a1 in Figure 3 is equal to the key travel H of the present application, then the compression ratio of the elastomer 150 in the embodiment of the present application is greater than the compression ratio of the rubber tube 004 in Figure 3. In this way, on the basis of the equal key travel of the key assembly 31, the compression ratio of the elastomer 150 in the embodiment of the present application is relatively small, the deformation is small, the elastic potential energy in the elastomer 150 is low, the internal stress is reduced, and the reliability of the elastomer 150 is improved, thereby improving the mechanical properties and service life of the key assembly 31.

[0051] The present embodiment of the present application does not limit the placement of the button assembly 31. For example, when the button assembly 31 is Figure 4b When placed in the orientation shown in , the keycap 130 and the floating frame 140 are both located above the elastic body 150. When the user does not apply force to the keycap 130, the gravity of the floating frame 140 causes the keycap 130 to produce a slight deformation, and the embodiment of the present application does not separately explain the slight deformation.

[0052] It is understandable that if the keycap 130 and the floating frame 140 are both located below the elastic body 150, when the user does not apply force to the keycap 130, the gravity of the floating frame 140 will not cause the keycap 130 to deform. Figure 4b The orientation shown in the figure is described as an example, and the "upper" and "lower" in the following text and subsequent figures are all based on Figure 4b The “upper” and “lower” in the figure are for reference only.

[0053] The present application embodiment does not limit the materials of the first bracket 110, the second bracket 120, the keycap 130, and the floating bracket 140. For example, the material of the first bracket 110 includes alloy, metal, and plastic. Correspondingly, the material of the second bracket 120, the keycap 130, and the floating bracket 140 may also include alloy, metal, and plastic.

[0054] The present embodiment of the application does not limit the material of the elastic body 150. For example, the material of the elastic body 150 can be rubber or elastic foam. In some embodiments, the material of the elastic body 150 can also be elastic metal or the like.

[0055] In some embodiments of the present application, the key assembly 31 further includes a substrate 160. One end of the first bracket 110 facing away from the keycap 130 is connected to the substrate 160. One end of the second bracket 120 facing away from the keycap 130 is connected to the substrate 160. One end of the elastic body 150 facing away from the floating frame 140 is elastically connected to the substrate 160. In this way, after pressing the keycap 130, the keycap 130 will move closer to the substrate 160 along the z direction.

[0056] There are multiple ways to connect the first bracket 110 and the second bracket 120 to the keycap 130, and there are also multiple ways to connect the first bracket 110 and the second bracket 120 to the substrate 160. For example, one end of the first bracket 110 is connected to the keycap 130 in a rotational manner, and the other end of the first bracket 110 is connected to the substrate 160 in a sliding manner; or, one end of the first bracket 110 is connected to the keycap 130 in a sliding manner, and the other end of the first bracket 110 is connected to the substrate 160 in a rotational manner. Similarly, one end of the second bracket 120 is connected to the keycap 130 in a rotational manner, and the other end of the second bracket 120 is connected to the substrate 160 in a sliding manner; or, one end of the second bracket 120 is connected to the keycap 130 in a sliding manner, and the other end of the second bracket 120 is connected to the substrate 160 in a rotational manner. Accordingly, there are multiple ways to connect in rotation and in sliding manner, and the embodiments of the present application only illustrate some examples.

[0057] The embodiment of the present application does not limit the shapes of the first bracket 110 and the second bracket 120. The X-shape of the first bracket 110 and the second bracket 120 when rotating is connected refers to the shape of the first bracket 110 and the second bracket 120 after being connected when the user does not apply force to the keycap 130.

[0058] Figure 5a This is a schematic diagram of the exploded structure of the key assembly 31 provided in the embodiment of the present application. Figure 5a The first bracket 110 includes a first support portion 111 and a first frame 112. One end of the first support portion 111 is connected to the first frame 112, and the other end of the first support portion 111 is connected to the keycap 130. The second bracket 120 includes a second support portion 121 and a second frame 122. One end of the second support portion 121 is connected to the second frame 122, and the other end of the second support portion 121 is connected to the keycap 130, and the first frame 112 is rotatably connected toward one end of the first support portion 111 and the second frame 122 is rotatably connected toward one end of the second support portion 121.

[0059] The embodiment of the present application does not limit the size relationship between the first support portion 111 and the first frame body 112 along the extension direction of the first bracket 110. For example, the size of the first support portion 111 can be greater than, less than or equal to the size of the first frame body 112.

[0060] The embodiment of the present application does not limit the connection method between the first support portion 111 and the first frame 112. Figure 5a In the embodiment, the first support portion 111 and the first frame body 112 are connected to form an integrally formed part. Alternatively, in other embodiments, the first support portion 111 and the first frame body 112 can be welded or screwed.

[0061] The embodiment of the present application does not limit the shape of the first bracket 110 . Figure 5a In the embodiment, the first bracket 110 is an annular structure. Exemplarily, the annular structure may be an open-loop structure or a closed-loop structure. In addition, the annular structure may be a square ring, a circular ring, an elliptical ring or an irregular annular structure. In other embodiments, the first bracket 110 may be a rod-shaped structure. For example, the first support portion 111 and the first frame body 112 are both rod-shaped structures.

[0062] The structure of the second bracket 120 can refer to the structural description of the first bracket 110, which will not be repeated here. The embodiment of the present application does not limit the connection method of the second support portion 121 and the second frame 122. For example, the second support portion 121 and the second frame 122 are connected as an integrally formed part. In some embodiments, in order to save the space occupied by the first bracket 110 and the second bracket 120, the second bracket 120 is sleeved on the first bracket 110. In other words, the second bracket 120 is provided with a through hole, and the second support portion 121 and the second frame 122 are jointly arranged to form the aforementioned through hole, the first support portion 111 and the first frame 112 are both located in the aforementioned through hole and are slidably connected to the through hole, and the first frame 112 and the second frame 122 are rotatably connected.

[0063] The embodiment of the present application does not limit the manner in which the first frame 112 and the second frame 122 are rotatably connected. For example, the first frame 112 and the second frame 122 are rotatably connected via a pin.

[0064] Figure 5b Schematic diagram of the exploded structure of the first bracket 110, the second bracket 120 and the keycap 130 provided in the embodiment of the present application. Figure 5b In the embodiment, the key cap 130 includes a cap body 131 and a first rotating portion 132. The first rotating portion 132 is disposed on a side of the cap body 131 facing the first bracket 110. Figure 5b In the example, the end s2 of the first support portion 111 away from the first frame 112 has the same structure as the end s1 of the first frame 112 away from the first support portion 111 . Figure 5b The s1 end is used as an example for description. Both the s1 end and the s2 end are provided with a second rotating portion 113. The first rotating portion 132 and the second rotating portion 113 of the s2 end are rotatably connected. Exemplarily, the first bracket 110 further includes a rotating shaft 114, and the first rotating portion 132 and the second rotating portion 113 are rotatably connected via the rotating shaft 114.

[0065] Figure 5b In the embodiment, two second rotating parts 113 are provided at one end of the first support part 111 away from the first frame 112, and the keycap 130 includes two first rotating parts 132, and one second rotating part 113 is rotatably connected to the first rotating part 132. In this way, the first support part 111 and the keycap 130 have more points of force and are subjected to more uniform force. It is understandable that in other embodiments, the number of the second rotating parts 113 can be one, three or more, and the embodiment of the present application does not limit this.

[0066] The embodiment of the present application does not limit the shape of the cap body 131. Exemplarily, the cap body 131 is an arc-shaped plate, and the arc-shaped plate is concave toward one side of the substrate 160.

[0067] Exemplarily, the keycap 130 further includes a first sliding portion 133, which is disposed on the side of the cap body 131 facing the first bracket 110. The second supporting portion 121 is provided with a second sliding portion 123 at one end away from the second bracket 122, and the first sliding portion 133 and the second sliding portion 123 are slidably connected.

[0068] Exemplarily, the first sliding portion 133 is provided with a slide groove 134, and the second sliding portion 123 is a convex block structure, and the convex block structure is located in the slide groove 134 and is slidably connected with the slide groove 134. When the cap body 131 is pressed down, the convex block structure slides in the slide groove 134, so that the first support portion 111 and the second support portion 121 are separated from each other. When the cap body 131 is restored, the convex block structure slides in the slide groove 134, so that the first support portion 111 and the second support portion 121 are close to each other. The sliding direction of the convex block structure and the slide groove 134 is the direction in which the first support portion 111 and the second support portion 121 deviate from or approach each other. It is understandable that in other embodiments, the first sliding portion 133 can be a convex block structure, and the second sliding portion 123 is provided with a slide groove 134, and the first sliding portion 133 and the second sliding portion 123 can also be slidably connected.

[0069] same, Figure 5b In the embodiment, two second sliding parts 123 are provided at one end of the second support part 121 away from the second frame 122. The keycap 130 includes two first sliding parts 133, and one second sliding part 123 is slidably connected to the other first sliding part 133. In this way, the force on the second frame 120 and the keycap 130 is more uniform. In other embodiments, the number of the second sliding parts 123 can be one, three or more, and the embodiment of the present application is not limited to this.

[0070] Please return to Figure 5aIn the embodiment where the key assembly 31 includes a substrate 160, one end of the first bracket 110 away from the keycap 130 is connected to the substrate 160. One end of the second bracket 120 away from the keycap 130 is connected to the substrate 160. In other words, one end of the first frame 112 away from the first support portion 111 is connected to the substrate 160, and one end of the second frame 122 away from the second support portion 121 is connected to the substrate 160. After the keycap 130 is subjected to force, the first bracket 110 needs to move relative to the substrate 160 and the keycap 130 so that the keycap 130 is relatively close to the substrate 160 along the z direction. Therefore, one end of the first bracket 110 rotates relative to the substrate 160, and the other end of the first bracket 110 slides relative to the keycap 130. Alternatively, one end of the first bracket 110 rotates relative to the keycap 130, and the other end of the first bracket 110 slides relative to the substrate 160.

[0071] Figure 5b In the embodiment, the key cap 130 and the end of the first support portion 111 away from the first frame 112 are rotatably connected through the second rotating portion 113 and the first rotating portion 132. Then the end of the first frame 112 away from the first support portion 111 and the substrate 160 (such as Figure 5a The sliding connection can refer to the description of the first sliding part 133 and the second sliding part 123. It can be understood that in other embodiments, the keycap 130 and the first support part 111 away from the first frame 112 can be the sliding connection shown in the first sliding part 133 and the second sliding part 123, and the end of the first frame 112 away from the first support part 111 and the base plate 160 can be the rotation connection shown in the second rotation part 113 and the first rotation part 132.

[0072] Correspondingly, the connection method of the second bracket 120, the keycap 130 and the substrate 160 is similar. Please refer to the description of the first bracket 110, the keycap 130 and the substrate 160, which will not be repeated here.

[0073] As described above, the side of the first bracket 110 facing away from the keycap 130 and the side of the second bracket 120 facing away from the keycap 130 are both in contact with the floating bracket 140. In the embodiment of the present application, the floating bracket 140 can be in contact with the side of the first support portion 111 facing away from the keycap 130, or the floating bracket 140 can be in contact with the side of the first frame body 112 facing away from the keycap 130. Correspondingly, the floating bracket 140 can be in contact with the side of the second support portion 121 facing away from the keycap 130 or the side of the second frame body 122 facing away from the keycap 130. Figure 6a and Figure 6b An exemplary description is given.

[0074] Figure 6a A schematic diagram of the principle of a button assembly 31 provided in an embodiment of the present application. Figure 6aIn the embodiment, the side of the first support portion 111 facing away from the keycap 130 and the side of the second support portion 121 facing away from the keycap 130 are both in contact with the floating frame 140. If the key travel of the key assembly 31 is H, the distance between the floating frame 140 and the keycap 130 along the z direction when the user does not apply force to the keycap 130 is h11. When the keycap 130 moves to the maximum distance, the dimensional change of the elastomer 150 along the z direction is n1. Then H=n1+h11. The height of the elastomer 150 along the z direction when the user does not apply force to the keycap 130 is h21. The compression ratio of the elastomer 150 is (h21+h11-H) / h21.

[0075] Figure 6b A schematic diagram of the principles of another key assembly 31 provided in an embodiment of the present application. Figure 6b , the side of the first frame 112 facing away from the keycap 130 and the side of the second frame 122 facing away from the keycap 130 are both in contact with the floating frame 140. If the key travel of the key assembly 31 is H, the distance between the floating frame 140 and the keycap 130 along the z direction when the user does not apply force to the keycap 130 is h12. When the keycap 130 moves to the maximum distance, the dimensional change of the elastomer 150 along the z direction is n2. Then H=n2+h12. The height of the elastomer 150 along the z direction when the user does not apply force to the keycap 130 is h22. The compression ratio of the elastomer 150 is (h22+h12-H) / h22.

[0076] Because the first frame 112 is farther away from the keycap 130 than the first supporting portion 111, Figure 6a h11 in is less than Figure 6b In h12, if Figure 6a and Figure 6b The key travel H is the same, then Figure 6a The size change n1 of the middle key cap 130 is greater than Figure 6b The size change of the middle key cap 130 is n2. Figure 6a and Figure 6b The key travel H is the same, and the elastic modulus (elastic modulus) of the key cap 130 is the same, then Figure 6b h22 in is less than Figure 6a In other words, Figure 6b The size of the middle key cap 130 in the free state is less than Figure 6a The size of the key cap 130 in the free state. The small size of the key cap 130 has the advantage of less material, and the large size of the key cap 130 has the advantage of not requiring high manufacturing precision. Figure 6a and Figure 6b The key travel H is the same, and the size of the key cap 130 in the free state is the same, that is, h21 = h22. Figure 6a The deformation amount (h21-n1) of the middle keycap 130 is greater than the deformation amount (h22-n2) of the keycap 130 of 6b, then Figure 6aThe elastic modulus of the middle key cap 130 is greater than Figure 6b The harder the material of the keycap 130 is, the higher the elastic modulus of the keycap 130 is. Figure 6a The hardness of the keycap 130 is greater than Figure 6b The harder the keycap 130 is, the less likely it is to be worn.

[0077] On the contrary, if Figure 6a and Figure 6b The elastic modulus of the middle key cap 130 is the same, and h12 is the same as h22. Figure 6a The key travel is greater than Figure 6b Thus, the positions where the floating frame 140 and the first bracket 110 or the floating frame 140 and the second bracket 120 abut can be set as required. The embodiment of the present application is described by taking the abutment between the floating frame 140 and the first support portion 111 and the second support portion 121 as an example.

[0078] In the embodiment of the present application, there are multiple ways for the first bracket 110 and the floating bracket 140 to abut against each other, and there are multiple ways for the second bracket 120 and the floating bracket 140 to abut against each other, and the embodiment of the present application does not limit this.

[0079] Figure 7a This is a schematic diagram of the exploded structure of the first bracket 110, the second bracket 120 and the floating bracket 140 provided in the embodiment of the present application. Figure 7a The floating frame 140 includes a mounting portion 143, a first abutting portion 141, and a second abutting portion 142. The first abutting portion 141 and the second abutting portion 142 are both connected to the mounting portion 143. Figure 6b ) and the mounting portion 143 is away from the key cap 130 (as shown Figure 6b One side of the housing is elastically connected.

[0080] In some embodiments, the mounting portion 143 , the first abutting portion 141 and the second abutting portion 142 are connected to form an integrally formed part. In some embodiments, the second abutting portion 142 includes a connecting end 144 and a free end 145 , and the connecting end 144 is connected to the mounting portion 143 .

[0081] Figure 7a In the example, the first bracket 110 is provided with a receiving hole 101. A step surface 115 is provided on the lower side of the first bracket 110. The second bracket 120 is provided with a through hole 124, and the through hole 124 penetrates the second bracket 120 along the thickness direction of the second bracket 120.

[0082] Figure 7b This is a schematic diagram of the exploded structure of the first bracket 110 and the floating bracket 140 provided in the embodiment of the present application. Figure 7bThe first abutting portion 141 abuts against a side of the first bracket 110 that is away from the key cap 130 . The second abutting portion 142 abuts against a side of the second bracket 120 that is away from the key cap 130 .

[0083] In some embodiments, the distance between the first abutting portion 141 and the keycap 130 is equal to the distance between the second abutting portion 142 and the keycap 130. In this way, when the floating frame 140 moves away from the keycap 130, the force exerted by the floating frame 140 on the elastic body 150 is distributed more evenly, thereby preventing the elastic body 150 from being locally subjected to greater force and thus being worn.

[0084] Figure 7b In the example, the mounting portion 143 is located in the receiving hole 101 and is movably connected to the receiving hole 101. In this way, the first abutting portion 141 can abut against the first bracket 110, and the mounting portion 143 has little interference with the relative rotation of the first bracket 110 and the second bracket 120. Exemplarily, along any direction perpendicular to the thickness direction of the first bracket 110, the size of the receiving hole 101 is larger than the size of the mounting portion 143, so that the mounting portion 143 can move relative to the receiving hole 101 along the thickness direction of the first bracket 110. At the same time, when the first bracket 110 and the second bracket 120 rotate relative to each other, the floating frame 140 moves relative to the receiving hole 101, so that the distance between the floating frame 140 and the first bracket 110 along the z direction can be reduced, and the volume of the floating frame 140 and the first bracket 110 can be reduced.

[0085] The embodiment of the present application does not limit the shape of the mounting portion 143 , and the mounting portion 143 may be configured according to the shape of the receiving hole 101 .

[0086] In some embodiments, the receiving hole 101 penetrates the first bracket 110 along the thickness direction of the keycap 130. In other words, the receiving hole 101 is a through hole, and the receiving hole 101 penetrates the first bracket 110 along the z direction. The floating frame 140 can pass through the through hole to get close to the keycap 130, so that the side of the floating frame 140 close to the keycap 130 can be closer to the keycap 130, so that the space between the first bracket 110 and the keycap 130 is fully utilized.

[0087] In other embodiments, the receiving hole 101 may be a blind hole, that is, the receiving hole 101 does not penetrate the first bracket 110, and the opening of the receiving hole 101 faces the floating frame 140, so that the floating frame 140 can also be slidably connected relative to the receiving hole 101. Alternatively, in some embodiments, the receiving hole 101 is not necessary, and the first bracket 110 may not be provided with the receiving hole 101. For example, the mounting portion 143 is located on a side of the first bracket 110 away from the keycap 130.

[0088] Exemplarily, the first abutting portion 141 abuts against the lower side of the first bracket 110 , and the second abutting portion 142 abuts against the lower side of the second bracket 120 . In the embodiment of the present application, the first abutting portion 141 is provided with a convex portion, which abuts against the first bracket 110 .

[0089] Figure 7c This is a schematic structural diagram of the first bracket 110 and the floating bracket 140 provided in an embodiment of the present application. Figure 7c In the embodiment, the first abutting portion 141 abuts against the stepped surface 115 .

[0090] In the embodiment of the present application, the floating frame 140 is provided with two first abutting portions 141, the two first abutting portions 141 are arranged at intervals, and the two first abutting portions 141 are both in abutment with the first bracket 110. The points of force of the first bracket 110 and the floating frame 140 can be increased, the force between the first bracket 110 and the floating frame 140 is evenly distributed, and the floating frame 140 is more stable when moving along the z direction. In other embodiments, the floating frame 140 can be provided with one, three, four or more first abutting portions 141.

[0091] Figure 7d This is a schematic structural diagram of the second bracket 120 and the floating bracket 140 provided in an embodiment of the present application. Figure 7d In the embodiment, the second abutting portion 142 passes through the through hole 124 and is slidably connected to the through hole 124. The second abutting portion 142 includes a connecting end 144 and a free end 145, the connecting end 144 is connected to the mounting portion 143, and the free end 145 abuts against a side of the second bracket 120 away from the keycap 130. In this way, the second abutting portion 142 can pass through the through hole 124 and abut against the second bracket 120. The connecting end 144 of the second abutting portion 142 can be located above the second bracket 120, and the free end 145 can be located below the second bracket 120 and abut against the keycap 130.

[0092] Accordingly, the floating frame 140 has two second abutting portions 142, which are arranged at intervals and abut against the second bracket 120. This can increase the fulcrum points of the second bracket 120 and the floating frame 140, which is conducive to a more stable movement of the floating frame 140 along the z direction.

[0093] Figure 7c and Figure 7d In the embodiment, the floating frame 140 may further include a reinforcing rib 146, and the reinforcing rib 146 is connected to the mounting portion 143. The reinforcing rib 146 may increase the strength of the mounting portion 143. Figure 6b The interaction force between the mounting portion 143 and the mounting portion 143 causes the mounting portion 143 to deform.

[0094] In some embodiments, a receiving groove 147 is provided on one side of the floating frame 140 facing the elastic body 150. The receiving groove 147 has an opening 148, and the opening 148 of the receiving groove 147 faces the elastic body 150. The vertical projection of the elastic body 150 on the floating frame 140 overlaps at least partially with the opening 148. When part of the elastic body 150 is located in the receiving groove 147, the elastic body 150 is in a compressed state. In this way, the receiving groove 147 can accommodate a part of the elastic body 150 in a compressed state. A storage space is provided for the elastic body 150 in a compressed state, and the space of the floating frame 140 is fully utilized. In addition, the larger the space for accommodating the elastic body 150 in a compressed state, the smaller the deformation of the elastic body 150, the smaller the internal stress of the elastic body 150, and the higher the reliability of the elastic body 150.

[0095] The vertical projection of the elastic body 150 on the floating frame 140 is: the vertical projection of the elastic body 150 on the surface where the floating frame 140 is located. The vertical projection of the elastic body 150 on the floating frame 140 at least partially overlaps with the opening 148, including: the vertical projection of the elastic body 150 on the floating frame 140 is entirely located in the opening 148; or the vertical projection of the elastic body 150 on the floating frame 140 is partially located in the opening 148 and partially located outside the opening 148.

[0096] The embodiment of the present application does not limit the shape of the opening 148 , and the opening 148 may be set according to the shape of the elastic body 150 in a compressed state.

[0097] The embodiment of the present application does not limit the shape of the elastic body 150 . Figure 5a In the embodiment, the elastic body 150 is in a truncated cone shape, one end of the elastic body 150 is elastically connected to the base plate 160, and the other end of the elastic body 150 is elastically connected to the floating frame 140. The truncated cone-shaped elastic body 150 is conducive to uniform force between the elastic body 150 and the floating frame 140, and is also conducive to uniform force between the elastic body 150 and the base plate 160. It can be understood that in other embodiments, the elastic body 150 can be in various shapes such as a cylinder, a prism or a spring sheet, and the embodiment of the present application is not limited to this.

[0098] The embodiment of the present application does not limit the elastic connection method between the elastic body 150 and the floating frame 140. In some embodiments, the elastic body 150 and the floating frame 140 are in contact with each other, because the elastic body 150 is located below the floating frame 140, and the floating frame 140 and the elastic body 150 are kept in contact with each other under the gravity of the floating frame 140. When the user uses the key assembly 31, the force between the elastic body 150 and the floating frame 140 can be transmitted to each other to move the keycap 130.

[0099] In other embodiments, the key assembly 31 further includes a glue layer, and the elastomer 150 and the floating frame 140 are bonded by the glue layer. In this way, when the user uses the key assembly 31, the elastomer 150 and the floating frame 140 hardly move relative to each other, which can avoid the elastomer 150 being rubbed by the floating frame 140 due to the relative movement of the elastomer 150 and the floating frame 140, thereby reducing the reliability of the elastomer 150. In addition, the elastomer 150 and the floating frame 140 are bonded by the glue layer, and the degree of freedom between the elastomer 150 and the floating frame 140 is reduced. In the process of assembling the key assembly 31, the elastomer 150 and the floating frame 140 can be connected first and then assembled with the remaining structures in the key assembly 31, which is conducive to simplifying the assembly process.

[0100] In other embodiments, the elastic body 150 and the floating frame 140 may also be connected by means of snap connection or screw connection.

[0101] Likewise, the embodiment of the present application does not limit the elastic connection method between the elastic body 150 and the substrate 160. Please refer to the elastic connection method between the elastic body 150 and the floating frame 140 described above, which will not be repeated here.

[0102] The present application embodiment does not limit the structure of the substrate 160. Please return to Figure 5a , exemplarily, the substrate 160 includes a circuit board 161 and a carrier board 162, and the circuit board 161 and the carrier board 162 are connected. The end of the elastic body 150 away from the floating frame 140 is elastically connected to the carrier board 162. The end of the first bracket 110 away from the keycap 130 is elastically connected to the carrier board 162, and the end of the second bracket 120 away from the keycap 130 is elastically connected to the carrier board 162. Among them, the circuit board 161 and the electronic device 10 (such as Figure 1 PCB signal connections as shown).

[0103] In some embodiments, a contact portion is provided on the circuit board 161. The contact portion is used to detect the elastic force of the elastic body 150 and generate a trigger signal, and send the trigger signal to the printed circuit board, which is used to receive the trigger signal and process the trigger signal.

[0104] Please return to Figure 2 ,exist Figure 2In the example, the side of the first bracket 110 facing away from the keycap 130 and the side of the second bracket 120 facing away from the keycap 130 are both in contact with the floating frame 140, and when the user presses the keycap 130, the floating frame 140 floats along the z-direction. It is understandable that in some embodiments, the first bracket 110 and the floating frame 140 are rotationally connected, and the side of the second bracket 120 facing away from the keycap 130 is in contact with the floating frame 140, and when the user presses the keycap 130, the floating frame 140 floats along the z-direction. Alternatively, in other embodiments, the second bracket 120 and the floating frame 140 are rotationally connected, and the side of the first bracket 110 facing away from the keycap 130 is in contact with the floating frame 140, and when the user presses the keycap 130, the floating frame 140 floats along the z-direction. The following is combined with Figure 8 Provide an exemplary introduction.

[0105] Figure 8 A schematic structural diagram of another key assembly 31 provided in an embodiment of the present application. Figure 8 and Figure 2 The differences between the key assembly 31 shown include: the connection method of the first bracket 110 and the floating bracket 140 is different. For the remaining structures, please refer to Figure 2 The description in will not be repeated here.

[0106] Figure 8 In the figure, the floating frame 140 includes a first end 201 and a second end 202, which are arranged opposite to each other. The first end 201 is rotatably connected to the first bracket 110, and the second end 202 is a free end, and the second end 202 abuts against a side of the second bracket 120 away from the keycap 130.

[0107] When the user presses the keycap 130, the first bracket 110 and the second bracket 120 rotate relative to each other. Since the first end 201 is rotatably connected to the first bracket 110, the first end 201 rotates relative to the first bracket 110, and the second end 202 as a free end moves away from the keycap 130 under the force of the second bracket 120. In this way, the floating frame 140 moves away from the keycap 130. Correspondingly, the floating frame 140 presses down the elastomer 150 so that the elastomer 150 is compressed. When the user cancels the force of pressing the keycap 130, the elastomer 150 pushes the floating frame 140 to move toward the keycap 130 and reset. Under the same key travel, the compression ratio of the elastomer 150 can be increased. The larger the compression ratio, the smaller the internal stress of the elastomer 150, and the higher the reliability. Under the same compression ratio of the elastomer 150, the key travel can be increased. The larger the key travel, the better the user experience. The compression ratio of the elastic body 150 can be made larger under a larger key travel, so that the key assembly 31 has the advantages of a large key travel and good mechanical reliability.

[0108] The embodiment of the present application does not limit the manner in which the first end 201 is rotatably connected to the first bracket 110. For example, the first end 201 is rotatably connected to the first bracket 110 via a pin. In some embodiments, the first end 201 is rotatably connected to a side of the first bracket 110 facing the keycap 130. In other embodiments, the first end 201 is rotatably connected to a side of the first bracket 110 facing away from the keycap 130.

[0109] For example, the abutment manner of the second end 202 and the second bracket 120 can refer to the aforementioned description of the floating bracket 140 and the first bracket 110 in FIG. 7 , which will not be described again here.

[0110] In other embodiments, the first end 201 is rotatably connected to the second bracket 120, the second end 202 is a free end, and the second end 202 abuts against a side of the first bracket 110 away from the keycap 130. Similarly to the above, the compression ratio of the elastic body 150 can be increased, the reliability of the elastic body 150 can be improved, and the mechanical properties of the key assembly 31 can be improved.

[0111] According to the above description, the key assembly 31 provided in the embodiment of the present application has excellent mechanical reliability. The keyboard 30 including the key assembly 31 obviously also has the advantage of good mechanical performance.

[0112] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A key assembly, It is characterized in that The button assembly comprises: keycap; A first bracket and a second bracket, wherein the first bracket and the second bracket are rotatably connected to each other and form an X shape, and one end of the first bracket and one end of the second bracket are both connected to the key cap; a floating frame, wherein a side of the first frame facing away from the keycap and a side of the second frame facing away from the keycap are both in contact with the floating frame; and An elastic body is elastically connected to a side of the floating frame facing away from the key cap.

2. The key assembly according to claim 1, It is characterized in that The first bracket is provided with a accommodating hole, and the floating bracket includes a mounting portion, a first supporting portion and a second supporting portion, wherein the first supporting portion and the second supporting portion are both connected to the mounting portion; the mounting portion is located in the accommodating hole and is slidably connected to the accommodating hole; the elastomer is elastically connected to a side of the mounting portion away from the keycap; the first supporting portion abuts against a side of the first bracket away from the keycap; and the second supporting portion abuts against a side of the second bracket away from the keycap.

3. The key assembly according to claim 2, It is characterized in that The second bracket is provided with a through hole, the second abutting portion passes through the through hole and is slidably connected to the through hole, the connecting end of the second abutting portion is connected to the mounting portion, and the free end of the second abutting portion abuts against a side of the second bracket away from the keycap.

4. The key assembly according to claim 2 or 3, It is characterized in that The accommodating hole penetrates the first bracket along a thickness direction of the key cap.

5. The key assembly according to any one of claims 1 to 4, It is characterized in that The first bracket comprises a first support part and a first frame body; one end of the first support part is connected to the first frame body, and the other end is connected to the key cap; the second bracket comprises a second support part and a second frame body; one end of the second support part is connected to the second frame body, and the other end is connected to the key cap; one end of the first frame body facing the first support part is rotatably connected to one end of the second frame body facing the second support part; A side of the first supporting portion facing away from the keycap and a side of the second supporting portion facing away from the keycap are both in contact with the floating frame; Alternatively, a side of the first frame body facing away from the keycap and a side of the second frame body facing away from the keycap are both in contact with the floating frame.

6. The key assembly according to any one of claims 1 to 5, It is characterized in that The floating frame is provided with a receiving groove, the opening of the receiving groove faces the elastomer, and the vertical projection of the elastomer on the floating frame at least partially overlaps with the opening; when part of the elastomer is located in the receiving groove, the elastomer is in a compressed state.

7. The key assembly according to any one of claims 1 to 6, It is characterized in that The key assembly further comprises a glue layer, and the elastic body is connected to a side of the floating frame facing away from the key cap through the glue layer.

8. The key assembly according to any one of claims 1 to 6, It is characterized in that The elastic body abuts against a side of the floating frame facing away from the key cap.

9. The key assembly according to any one of claims 1 to 8, It is characterized in that The key assembly also includes a substrate, one end of the first bracket facing away from the keycap and one end of the second bracket facing away from the keycap are both connected to the substrate, and the substrate is elastically connected to a side of the elastomer facing away from the floating frame.

10. A key assembly, It is characterized in that The button assembly comprises: keycap; A first bracket and a second bracket, wherein the first bracket and the second bracket are rotatably connected to each other and form an X shape, and one end of the first bracket and one end of the second bracket are both connected to the key cap; A floating frame, wherein the first frame abuts against a side of the keycap facing away, and the second frame is rotatably connected to the floating frame; and An elastic body is elastically connected to a side of the floating frame facing away from the key cap.

11. A keyboard, It is characterized in that The keyboard comprises: a main body and a key assembly as described in any one of claims 1-10; the end of the elastomer facing away from the floating frame is elastically connected to the main body, and the end facing away from the keycap and the end of the second bracket facing away from the keycap are both connected to the main body.

12. An electronic device, It is characterized in that The electronic device comprises: a display screen and the keyboard as claimed in claim 11; the display screen is connected to the keyboard signal.

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