Keyboard assembly and electronic device

Abstract

Provided in the present application are a keyboard assembly and an electronic device. The keyboard assembly comprises a keyboard body, a first supporting plate, a second supporting plate and a third supporting plate; the first supporting plate comprises a first plate edge and a second plate edge which are oppositely arranged; the second supporting plate comprises a third plate edge and a fourth plate edge which are oppositely arranged; the first plate edge is rotationally connected to the third plate edge; the second plate edge is rotationally connected to one end of the keyboard body; the fourth plate edge is rotationally connected to the third supporting plate; the third supporting plate can be used for being detachably connected to a main unit of an electronic device. The keyboard assembly provided by the present application uses a multi-link transmission principle, so as to provide reliable support for the main unit of the electronic device while satisfying the requirement for smoothly opening the electronic device; the keyboard assembly has a simple structure, facilitating miniaturized design of the keyboard assembly and further satisfying the design requirements for lightweight and miniaturized electronic devices, thus satisfying the requirement of users for portability, and improving user experience.

Description

Keyboard assembly and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on February 22, 2024, with application number 202410200177.X and application name “A keyboard assembly and electronic device”, the entire contents of which are incorporated by reference into this application; this application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on August 29, 2024, with application number PCT / CN2024 / 115555 and application name “A keyboard assembly and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of electronic equipment, and in particular to a keyboard assembly and an electronic device. Background Art

[0004] As people's daily lives become more enriched and economic and commercial activities increase, portable electronic devices with keyboard input are becoming increasingly indispensable terminal products. As one of the important components of these portable electronic devices, the keyboard not only provides input functions but also usually supports the host of the electronic device.

[0005] Currently, electronic devices with separate keyboards and main units often have complex keyboard structures to meet the user requirements of the electronic device, resulting in a heavy and bulky keyboard. This results in a heavier overall weight and, when the electronic device is closed, a greater thickness, which contradicts the user's desire for portability.

[0006] Based on this, how to design a keyboard structure so that the keyboard can adapt to the development trend of being light, thin and portable has become a difficult problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0007] The present application provides a keyboard assembly and an electronic device, so that the keyboard assembly meets the design requirements of being light, thin and portable, thereby realizing the miniaturization and lightness of the electronic device and improving the user experience.

[0008] In a first aspect, the present application provides a keyboard assembly comprising a keyboard body, the keyboard body comprising a plurality of keys, and a user can activate the input function of the keyboard assembly by tapping the plurality of keys. In a specific configuration, the keyboard assembly may further comprise a first support plate, a second support plate, and a third support plate, wherein the first support plate comprises a first plate edge and a second plate edge disposed oppositely, the second support plate comprises a third plate edge and a fourth plate edge disposed oppositely, the first plate edge being rotatably connected to the third plate edge, and the second plate edge being rotatably connected to one end of the keyboard body to achieve a rotatable connection between the support assembly and the keyboard body. In addition, the fourth plate edge of the second support plate is rotatably connected to the third support plate, and the third support plate can be used to detachably connect to the main body of an electronic device. The keyboard assembly provided in the present application utilizes the principle of a multi-rod transmission to provide reliable support for the main body of the electronic device while meeting the requirements for smooth opening of the electronic device. The structure of the keyboard assembly is relatively simple, which facilitates the miniaturization of the keyboard assembly, thereby meeting the design requirements of lightweight and miniaturized electronic devices, satisfying the user's requirements for portability, and improving the user experience.

[0009] In the present application, there are many ways to achieve the rotational connection between the support assembly and the keyboard body. Several possible implementation methods are introduced below.

[0010] In one possible implementation, the keyboard assembly further includes a first rotation module, the first rotation module including a first rotation shaft assembly, the first rotation shaft assembly including a first shaft and a second shaft, the axis of the first shaft and the axis of the second shaft being parallel and non-overlapping, and the first shaft being fixedly connected to the second plate edge of the first support plate, and the second shaft being fixedly connected to one end of the keyboard body. In the present application, the first rotation shaft assembly of the first rotation module adopts the above-mentioned dual-axis structural design, which can not only meet the requirements of relative rotation between the first support plate and the keyboard body, but also improve the coplanarity between the outer surface of the first support plate facing away from the key and the outer surface of the keyboard body facing away from the key when the keyboard assembly is in the open state, which is conducive to improving the simplicity of the appearance of the keyboard assembly.

[0011] In order to facilitate the fixed connection between the first rotating shaft assembly, the first support plate and the keyboard body, the first rotating shaft assembly also includes a first fixing frame and a second fixing frame. The first fixing frame is arranged at the end of the first shaft, and the first fixing frame is used to drive the first shaft to rotate synchronously. The second fixing frame is arranged at the end of the second shaft, and the second fixing frame is used to drive the second shaft to rotate synchronously. In this way, the fixed connection between the first fixing frame and the second plate edge of the first support plate, and the fixed connection between the second fixing frame and one end of the keyboard body can be achieved. In addition, in the present application, along the axial direction of the first rotating module, the first fixing frame and the second fixing frame can be located on the same side of the first rotating shaft assembly, which can help improve the stability of the movement of the first rotating shaft assembly.

[0012] In this implementation, the first rotating shaft assembly further includes a connecting member, a first stopper, and a second stopper. The connecting member is sleeved onto the first and second shafts, the first stopper is sleeved onto the first shaft, and the second stopper is sleeved onto the second shaft. In the rotational direction of the first shaft, the relative position of the first stopper to the first shaft is fixed. In the rotational direction of the second shaft, the relative position of the second stopper to the second shaft is fixed. Because the first shaft is fixedly connected to the first support plate and the second shaft is fixedly connected to the keyboard body, during the process of the first support plate and the keyboard body rotating away from each other, the first stopper can rotate synchronously with the first shaft, and the second stopper can rotate synchronously with the second shaft. When the first stopper abuts the connecting member and the second stopper abuts the connecting member, the first support plate stops rotating toward the side away from the keyboard body. This can help improve the support stability of the keyboard assembly.

[0013] To achieve abutment between the first and second stoppers and the connecting member, the end of the connecting member facing the first stopper includes a first stopper, and the end of the first stopper facing the connecting member includes a second stopper, with the side of the first stopper positioned opposite the side of the second stopper in the direction of rotation of the first axis. Similarly, the end of the connecting member facing the second stopper includes a third stopper, and the end of the second stopper facing the connecting member includes a fourth stopper, with the side of the third stopper positioned opposite the side of the fourth stopper in the direction of rotation of the second axis. Thus, when the side of the first stopper abuts the side of the second stopper, and the side of the third stopper abuts the side of the fourth stopper, the first support plate stops rotating away from the keyboard body. In the present application, the connecting member, the first stopper, and the second stopper adopt the above-described structural design, which can not only achieve a stop for the rotation of the first support plate and the keyboard body, but also simplify the structure of the first rotation module.

[0014] In this implementation, the first rotating shaft assembly further includes a conjoined cam, a first cam member, and a second cam member. The conjoined cam is sleeved on the first shaft and the second shaft, the first cam member is sleeved on the first shaft, and the second cam member is sleeved on the second shaft. The conjoined cam is located between the first stop member and the first cam. In addition, the end surface of the conjoined cam facing the first cam member includes a first cam surface, the end surface of the first cam member facing the conjoined cam includes a second cam surface, and the first cam surface abuts the second cam surface. Similarly, the end surface of the conjoined cam facing the second cam member includes a third cam surface, the end surface of the second cam member facing the conjoined cam includes a fourth cam surface, and the third cam surface abuts the fourth cam surface. In this way, a certain operational damping feel can be provided to the user during the process of opening the electronic device, thereby enhancing the user experience.

[0015] In addition, in the present application, when the first stopper abuts the connecting member, the raised portion of the first cam surface abuts the raised portion of the second cam surface. And when the second stopper abuts the connecting member, the raised portion of the third cam surface abuts the raised portion of the fourth cam surface. This ensures that the keyboard assembly can be opened smoothly while also allowing the keyboard assembly to be stably maintained at the corresponding opening angle under the action of the damping force at the end of opening. When the electronic device using the keyboard assembly provided by the present application is in the open state, even if it is subjected to a certain external impact force, it will not easily shake, which is conducive to improving the user experience and thus enhancing the competitiveness of the product.

[0016] To enhance the support stability of the keyboard assembly when maintained in the open state, the integrated cam can be configured such that the first cam surface includes a first recessed portion, a second recessed portion, and a first raised portion. The depth of the second recessed portion is less than that of the first recessed portion. The first raised portion is positioned between the first and second recessed portions. The surface of the first raised portion is an arcuate surface, and the slope of the first inclined surface extending from the surface of the first raised portion into the first recessed portion is less than the slope of the second inclined surface extending from the surface of the first raised portion into the second recessed portion. Furthermore, when the keyboard assembly is in the closed state, the raised portion of the second cam surface of the first cam member is positioned in the first recessed portion. When the connecting member abuts the first stop member, i.e., when the keyboard assembly is in the open state, the raised portion of the second cam surface of the first cam member is positioned in the second recessed portion.

[0017] Similarly, the third cam surface includes a third recessed portion, a fourth recessed portion, and a second raised portion. The recessed portion has a depth less than that of the third recessed portion. The second raised portion is located between the third and fourth recessed portions. The second raised portion has an arcuate surface, and the slope of the third inclined surface extending from the surface of the second raised portion into the third recessed portion is less than the slope of the fourth inclined surface extending from the surface of the second raised portion into the fourth recessed portion. When the keyboard assembly is in the closed position, the raised portion of the fourth cam surface of the second cam member is located in the third recessed portion; and when the connecting member abuts the second stop member, the raised portion of the fourth cam surface of the second cam member is located in the fourth recessed portion.

[0018] Thus, when the keyboard assembly moves from a closed state to an open state, the first support plate and the keyboard body rotate away from each other, and the raised portion of the second cam surface (fourth cam surface) moves along the first inclined surface (third inclined surface) toward the first raised portion (second raised portion). When the raised portion of the second cam surface (fourth cam surface) reaches the surface of the first raised portion (second raised portion), due to the presence of a damping force, the raised portion of the second cam surface (fourth cam surface) can continue to move toward the second recessed portion (fourth recessed portion) under the action of the damping force, even when the opening force is no longer applied. When the first stopper (second stopper) abuts the connecting member, the raised portion of the second cam surface (fourth cam surface) is located in the second recessed portion (fourth recessed portion). At this point, in the absence of external forces, the first support plate and the keyboard body can be locked at this opening angle, effectively improving the support reliability of the keyboard assembly. Based on this structural design, when the electronic device using the keyboard assembly is in the open state, even if the host is heavy, the first support plate is small, or the host of the electronic device is clicked, the electronic device can be stably maintained at the open angle, which can effectively improve the user experience.

[0019] In this implementation of the present application, the aforementioned connecting member and the conjoined cam can also be integrated into a design. Specifically, the end of the connecting member facing the first stopper also includes a fifth cam surface, and the end of the first stopper facing the connecting member also includes a sixth cam surface. Similarly, the end of the connecting member facing the second stopper also includes a seventh cam surface, and the end of the second stopper facing the connecting member also includes an eighth cam surface, with the seventh cam surface abutting the eighth cam surface. Furthermore, when the connecting member abuts the first stopper, the raised portion of the fifth cam surface abuts the raised portion of the sixth cam surface; and when the connecting member abuts the second stopper, the raised portion of the seventh cam surface abuts the raised portion of the eighth cam surface. With the above design, the connecting member, the first stopper, and the second stopper can not only serve as a stopper but also provide a certain damping force, which helps to improve the integration of the first rotating module and thus facilitate the miniaturization of the keyboard assembly.

[0020] In the present application, when the end of the connecting member facing the first stopper further includes a fifth cam surface, and the end of the first stopper facing the connecting member further includes a sixth cam surface, and the fifth cam surface abuts the sixth cam surface, the fifth cam surface, when specifically configured, may include a fifth recessed portion, a sixth recessed portion, and a third protruding portion, wherein the third protruding portion is located between the fifth and sixth recessed portions, the surface of the third protruding portion is an arcuate surface, and the slope of the fifth inclined surface extending from the surface of the third protruding portion into the fifth recessed portion is less than the slope of the sixth inclined surface extending from the surface of the third protruding portion into the sixth recessed portion. Furthermore, when the keyboard assembly is in the closed position, the protruding portion of the sixth cam surface of the first stopper is located within the fifth recessed portion; and when the side surface of the first stopper abuts the side surface of the second stopper, the protruding portion of the sixth cam surface of the first stopper is located within the sixth recessed portion.

[0021] Similarly, when the end of the connecting member facing the second stopper further includes a seventh cam surface, and the end of the second stopper facing the connecting member further includes an eighth cam surface, and the seventh cam surface abuts the eighth cam surface, the seventh cam surface comprises a seventh recess, an eighth recess, and a fourth projection, the fourth projection being located between the seventh and eighth recesses, the fourth projection being an arcuate surface, and the slope of the seventh inclined surface extending from the surface of the fourth projection into the seventh recess is less than the slope of the eighth inclined surface extending from the surface of the fourth projection into the eighth recess. Furthermore, when the keyboard assembly is in the closed position, the projection of the eighth cam surface of the second stopper is located in the seventh recess; and when the side surface of the third stopper abuts the side surface of the fourth stopper, the projection of the eighth cam surface of the second stopper is located in the eighth recess.

[0022] Thus, when the keyboard assembly moves from a closed state to an open state, the first support plate and the keyboard body rotate away from each other, and the raised portion of the sixth cam surface (eighth cam surface) moves along the fifth inclined surface (seventh inclined surface) toward the third raised portion (fourth raised portion). When the raised portion of the sixth cam surface (eighth cam surface) reaches the surface of the third raised portion (fourth raised portion), due to the presence of a damping force, the raised portion of the sixth cam surface (eighth cam surface) can continue to move toward the sixth recessed portion (eighth recessed portion) under the action of the damping force, even if the opening force is no longer applied. When the first stopper (second stopper) abuts the connecting member, the raised portion of the sixth cam surface (eighth cam surface) is located in the sixth recessed portion (eighth recessed portion). At this point, in the absence of external forces, the first support plate and the keyboard body can be locked at this opening angle, effectively improving the support reliability of the keyboard assembly. Based on this structural design, when the electronic device using the keyboard assembly is in the open state, even if the host is heavy, the first support plate is small, or the host of the electronic device is clicked, the electronic device can be stably maintained at the open angle, which can effectively improve the user experience.

[0023] In this implementation, the first rotating shaft assembly may further include a first elastic assembly and a second elastic assembly. The first elastic assembly is sleeved on the first shaft and may be located on a side of the first stop facing away from the connecting member, and the first elastic assembly presses the first stop toward the connecting member. The second elastic assembly is sleeved on the second shaft and may be located on a side of the second stop facing away from the connecting member, and the second elastic assembly presses the second stop toward the connecting member. In this manner, the elastic force of the first elastic assembly presses the first stop toward the connecting member, and the elastic force of the connecting member presses the second stop toward the connecting member, which helps improve the stability of the movement of the first rotating module.

[0024] In the above-mentioned implementation of the present application, the first shaft further includes a first helical surface, and the second shaft includes a second helical surface, and the rotation direction of the first helical surface and the second helical surface can be the same. In addition, the first rotating shaft assembly further includes an idler wheel, which is located between the first helical surface and the second helical surface, and the first helical surface is meshed with the gear surface of the idler wheel, and the second helical surface is meshed with the gear surface of the idler wheel. The above-mentioned design can realize synchronous counter-rotation of the first shaft and the second shaft, which is conducive to improving the stability of the rotation of the first shaft and the second shaft, thereby improving the stability of the relative rotation between the first support plate and the keyboard body.

[0025] Furthermore, the present application does not specify the specific locations of the first and second helical surfaces. For example, when the first rotating shaft assembly includes a first fixing frame and a second fixing frame, the first helical surface may be located on the side of the connecting member facing the first fixing frame, and the second helical surface may be located on the side of the connecting member facing the second fixing frame. Furthermore, the idler pulley's rotating shaft may be mounted on the connecting member, which improves the structural reliability of the first rotating shaft assembly and makes the structure of the first rotating shaft assembly more compact, thereby facilitating a miniaturized design of the first rotating shaft assembly.

[0026] In another possible implementation of the present application, the first rotating module of the keyboard assembly is a single-axis structure. Specifically, the first rotating module includes a first rotating shaft, the second plate edge of the first support plate is rotatably connected to the first rotating shaft, and one end of the keyboard body is rotatably connected to the first rotating shaft. This helps simplify the structure of the first rotating shaft assembly, thereby facilitating a lightweight and thin design of the keyboard assembly.

[0027] In another possible implementation of the present application, the first rotating module of the keyboard assembly is a shaftless structure. Specifically, the first rotating module is a flexible material layer connected to the first support plate, and the flexible material layer is connected to one end of the keyboard body. The above-described arrangement of the first rotating module can effectively simplify the structure of the keyboard assembly, which is conducive to achieving a lightweight and thin design of the keyboard assembly.

[0028] In one possible implementation of the present application, when the keyboard assembly is in a closed state, the projection of the first support plate from the first support plate to the keyboard body covers the projection of the first rotating module, which can make the appearance of the keyboard assembly simpler.

[0029] In this application, the implementation method of the rotational connection between the first support plate and the second support plate is not limited. For example, in one possible implementation method, the keyboard assembly also includes a second rotation module, the second rotation module includes a second rotation shaft and a second rotation shaft assembly, the second rotation shaft assembly includes a first rotation bracket and a second rotation bracket, the first rotation bracket is rotationally connected to the second rotation shaft, and the first rotation bracket is fixedly connected to the first plate edge of the first support plate. The second rotation bracket is rotationally connected to the second rotation shaft, and the second rotation bracket is fixedly connected to the third plate edge of the second support plate. In this way, the rotational connection between the first support plate and the second support plate can be achieved through the rotational connection between the first rotation bracket and the second rotation bracket and the second rotation shaft.

[0030] When specifically setting up the first rotating bracket, the first rotating bracket includes a first connecting plate and a first connecting arm, the first connecting plate being fixedly connected to the first support plate, the first connecting arm being disposed at the end of the first connecting plate, the first connecting arm including a first connecting portion and a first arc-shaped rotating portion, the first connecting portion and the first arc-shaped rotating portion being arranged axially along the second rotating shaft, and the first connecting portion being sleeved on the second rotating shaft. Similarly, the second rotating bracket includes a second connecting plate and a second connecting arm, the second connecting plate being fixedly connected to the second support plate, the second connecting arm being disposed at the end of the second connecting plate, the second connecting arm including a second connecting portion and a second arc-shaped rotating portion, the second connecting portion and the second arc-shaped rotating portion being arranged axially along the second rotating shaft, and the second connecting portion being sleeved on the second rotating shaft. In addition, along the axial direction of the second rotating shaft, the first connecting arm and the second connecting arm are alternately disposed, and along the rotation direction of the first rotating bracket and the second rotating bracket, the side surface of the first arc-shaped rotating portion and the side surface of the second arc-shaped rotating portion are disposed opposite each other. In the present application, the second rotating module adopts the above-mentioned design, which can effectively prevent the first support plate and the second support plate from being bent or over-bent during the rotation process, thereby improving the smoothness of the operation of the keyboard assembly during opening and closing.

[0031] In another possible implementation of the present application, the second rotating shaft assembly may also adopt other possible configurations. For example, the first rotating bracket includes a first connecting plate and a first connecting arm, the first connecting plate being fixedly connected to the first plate edge of the first support plate, the first connecting arm being disposed at the end of the first connecting plate, and the first connecting arm being an arc-shaped rotating block. Similarly, the second rotating bracket includes a second connecting plate and a second connecting arm, the second connecting plate being fixedly connected to the third plate edge of the second support plate, the second connecting arm being disposed at the end of the second connecting plate, and the second connecting arm being an arc-shaped rotating block. In addition, along the axial direction of the second rotating shaft, the first connecting arm and the second connecting arm are disposed in a one-to-one correspondence, and along the rotation direction of the first rotating bracket and the second rotating bracket, the side surface of the first connecting arm and the side surface of the second connecting arm are disposed opposite each other. In this way, when the first rotating bracket and the second rotating bracket rotate around the second rotating axis to a set angle, the side surface of the first connecting arm can abut against the side surface of the second connecting arm to limit the rotation position of the first rotating bracket and the second rotating bracket, thereby limiting the rotation angle between the first support plate and the second support plate, which can effectively avoid the first support plate and the second support plate from being bent or over-bent during the rotation process.

[0032] In another possible implementation of the present application, the support assembly further includes a flexible material layer connected to the first edge of the first support plate, and the flexible material layer is connected to the third edge of the second support plate. This allows for a rotational connection between the first and second support plates while also effectively simplifying the structure of the keyboard assembly, thereby facilitating a lightweight and thin design of the keyboard assembly.

[0033] In one possible implementation of the present application, when the keyboard assembly is in the open position, the angle between the outer surface of the first support plate facing away from the key and the outer surface of the keyboard body facing away from the key, which faces the key, is greater than or equal to 175° and less than or equal to 185°. This allows the outer surface of the first support member and the outer surface of the keyboard body to be approximately coplanar, which reduces the design difficulty of the first hinge assembly while meeting the support reliability requirements of the support assembly.

[0034] This application does not specify the implementation method for the pivotal connection between the second and third support plates. For example, in one possible implementation, the third support plate includes a fifth plate edge, which is pivotally connected to the fourth plate edge. Because this keyboard assembly utilizes this design, it can meet the requirements of various host computers, thus having a wide range of applications.

[0035] In another possible implementation of this application, the third support plate includes a fifth edge, and the fourth edge of the second support plate is pivotally connected to the surface of the third support plate. Furthermore, when the keyboard assembly is in the open position, the fifth edge abuts the keyboard body. With this design, the third support plate, the second support plate, the first support plate, and the keyboard body form a nearly triangular support structure. This means that the keyboard assembly itself forms a stable support structure, making it applicable to a wider range of scenarios.

[0036] In one possible implementation of the present application, the keyboard body is provided with a first pen slot, and the first support plate is provided with a second pen slot. When the keyboard assembly is in the closed state, the first pen slot and the second pen slot are arranged opposite each other to form a storage space for a stylus. This achieves a thin design for the keyboard assembly while also meeting the storage requirements for a stylus.

[0037] In a second aspect, the present application further provides an electronic device comprising a host computer and the keyboard assembly of the first aspect, wherein the host computer is located on a side of the keyboard body where the plurality of keys are located. The third support plate of the keyboard assembly is detachably connected to the host computer. Because the keyboard assembly in the electronic device provided herein has a relatively simple structure, it can meet the design requirements of electronic devices for thinness, lightness, and miniaturization, thereby satisfying user requirements for portability and enhancing the user experience.

[0038] In one possible implementation of the present application, when the electronic device is in the open state, the main unit, the second support plate, the first support plate, and the keyboard body form a triangular support structure, which can stably maintain the electronic device in the open state, thereby meeting the user's usage requirements.

[0039] It is understood that, in actual design, due to design tolerances and production conditions, when the electronic device is in the open state, the angle between the outer surface of the first support member and the outer surface of the keyboard body toward the host is greater than or equal to 175° and less than or equal to 185°, and the outer surface of the first support member and the outer surface of the keyboard body are approximately coplanar. Based on this, when the electronic device is in the open state, the host, second support plate, first support plate, and keyboard body can form a nearly triangular support structure, which still meets the support requirements of the electronic device in the open state.

[0040] It's worth noting that in this electronic device, if the first rotating shaft assembly of the first rotating module of the keyboard assembly, which is used to achieve the rotational connection between the first support plate and the keyboard body, adopts a dual-axis design, the host-driven movement of the support assembly around the keyboard body can be equivalent to a five-bar motion. The first support plate, second support plate, host, first rotating shaft assembly, and keyboard body can each be considered a single rod. Furthermore, the kinematic pairs between the first support plate and the first rotating shaft assembly, between the second support plate and the first support plate, between the host and the second support plate, and between the first rotating shaft assembly and the keyboard body are all low pairs. In other words, the five-bar transmission mechanism includes four low pairs. Furthermore, the first rotating shaft assembly is a high-pair kinematic member. Therefore, the degree of freedom of the five-bar transmission mechanism = 3 × 4 - 2 × 5 - 1 = 1. Therefore, it can be understood that the five-bar transmission mechanism has a unique degree of freedom, that is, the motion trajectory of each rod of the five-bar transmission mechanism is unique. Therefore, during the rotation of the keyboard assembly's support assembly around the keyboard body, the rotation trajectory of each support plate and the first rotating shaft assembly is unique. In this way, when the electronic device is in the open state, the coplanarity between the outer surface of the first support plate and the outer surface of the keyboard body can be improved, so as to improve the flatness of the appearance of the keyboard assembly.

[0041] In addition, when the first rotating module of the keyboard assembly used to realize the rotational connection between the first support plate and the keyboard body adopts a single-axis or shaftless structural design, the movement of the support assembly driven by the host around the keyboard body can be equivalent to a four-bar motion. Among them, the first support plate, the second support plate, the host, and the keyboard body can each be regarded as a rod, and the motion pairs between the first support plate and the keyboard body, between the second support plate and the first support plate, and between the host and the second support plate are all low pairs. Then, the four-bar transmission mechanism only includes four low pairs. Therefore, the degree of freedom of the four-bar transmission mechanism = 3×3-2×4=1. It can be understood from this that the degree of freedom of the four-bar transmission mechanism is unique, that is, the motion trajectory of each rod of the four-bar transmission mechanism is unique. Therefore, during the rotation of the support assembly of the keyboard assembly around the keyboard body, the rotation trajectory of each support plate is unique. In this way, when the keyboard assembly is in the open state, it can be beneficial to improve the coplanarity between the outer surface of the first support plate and the outer surface of the keyboard body, thereby improving the appearance flatness of the keyboard assembly.

[0042] In the present application, in order to enable the host of the electronic device to serve as a supporting structure for forming a stable triangular support structure with the keyboard assembly, it is necessary to set a connection structure between the host and the keyboard body, so that when the electronic device is in the open state, the host can provide a stable supporting force through the connection between the host and the keyboard body. In a specific implementation of the present application, the host includes a third magnetic part, which is located at one end of the host. In addition, the keyboard body also includes a fourth magnetic part. When the electronic device is in the open state, the third magnetic part is attracted to the fourth magnetic part. The connection between the host and the keyboard body is thereby achieved by magnetic attraction. This implementation is relatively simple, which helps to reduce the design complexity of the electronic device.

[0043] In one possible implementation of the present application, the keyboard body includes multiple fourth magnetic members arranged sequentially along a line away from the support assembly. This allows the electronic device to maintain a corresponding opening angle by attracting the third magnetic member of the host computer to the fourth magnetic members at different locations. This facilitates multi-angle adjustment of the electronic device's opening state to meet the user's requirements for different opening angles, thereby improving the user experience.

[0044] In one possible implementation of the present application, the keyboard assembly further includes a charging control circuit board, a connector, and a main circuit board. The charging control circuit board is disposed on the first support plate, and the main circuit board is disposed on the keyboard body. The charging control circuit board is used to receive an external power source, power the host computer's battery via the connector, and power the main circuit board. This improves the space utilization of the keyboard assembly, thereby facilitating a reduction in the thickness of the keyboard body and achieving a thinner design for the keyboard assembly.

[0045] In this application, the first support plate also includes a power interface, through which the charging control circuit board receives external power. This shortens the distance between the charging control circuit board and the power interface and the main circuit board, thereby facilitating the charging control circuit board to provide the external power received by the power interface to the host computer and the main circuit board.

[0046] In addition, in this application, the connector is provided on the first support plate, the second support plate, or the third support plate, and the charging control circuit board is electrically connected to the connector via a flexible circuit board. This facilitates the flow of high current between the charging control circuit board and the connector, thereby increasing the charging speed of the host battery using the charging control circuit board.

[0047] In another possible implementation of the present application, the charging control circuit board includes a charging controller, and the main circuit board includes a mainboard processor, wherein the charging controller is used to transmit the received external power signal to the mainboard processor. The mainboard processor is used to control the charging controller to supply power to the host battery when the host battery is in a low power state. Since in the present application, the power supply circuit of the keyboard assembly is separately provided on the charging control circuit board and the main circuit board, and the charging control circuit board is provided on the first support plate, while the main circuit board is provided on the keyboard body, this is conducive to improving the internal space utilization of the keyboard assembly, which is conducive to improving the refinement of the keyboard assembly.

[0048] On the third aspect, the present application also provides an electronic device, which includes a host and a keyboard assembly, the keyboard assembly including a keyboard body, a first support plate and a second support plate, wherein the first support plate includes a first plate edge and a second plate edge that are relatively set, and the second support plate includes a third plate edge and a fourth plate edge that are relatively set, the first plate edge is rotatably connected to the third plate edge, and the second plate edge is rotatably connected to one end of the keyboard body. In addition, the host includes a support arm and a back cover, and the support arm is rotatably connected to the back cover. In this way, the second support plate can be rotatably connected to the support arm of the host by making the fourth plate edge of the second support plate detachable to the support arm. The keyboard assembly and the host are rotatably connected in the above manner, which can be beneficial to reducing the size of the second support plate, thereby facilitating the reduction of the weight of the keyboard assembly, so as to achieve a lightweight design of the electronic device.

[0049] In addition, in one possible implementation of the present application, the second support plate is electrically connected to the keyboard body, and the second support plate is electrically connected to the support arm. This allows the second support plate to be rotatably connected to the host computer while also achieving an electrical connection between the host computer and the keyboard body, which is beneficial for improving the integrated design of the keyboard assembly.

[0050] In a fourth aspect, the present application also provides a keyboard assembly, comprising a keyboard body including a plurality of keys. Furthermore, the keyboard assembly further comprises a support assembly, a first flexible material layer, a second flexible material layer, and an oil-edge material layer. The support assembly is rotatably connected to the keyboard body, and comprises a first attachment surface and a second attachment surface disposed opposite each other, with the first attachment surface facing away from the keyboard body relative to the second attachment surface. Furthermore, the first attachment surface comprises an inclined surface extending in an edge direction toward the second attachment surface. In the present application, the first flexible material layer is attached to the first attachment surface, and the second flexible material layer is attached to the second attachment surface. The oil-edge material layer covers the edges of the first flexible material layer, the first attachment surface, the second flexible material layer, and the second attachment surface. The flexible material layer wrapping method of the support assembly provided in the present application can avoid the formation of ridges in the exterior, thereby providing the keyboard assembly with a smoother, simpler, and more integrated exterior surface, thereby enhancing the aesthetic appearance of the keyboard assembly.

[0051] It is worth mentioning that the keyboard body and support assembly of the keyboard assembly provided in the fourth aspect can be set with reference to the keyboard assemblies provided in the first to third aspects above, or any other possible setting method can be adopted, which is not limited here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] FIG1 is a schematic diagram of an application scenario of a keyboard assembly provided in an embodiment of the present application;

[0053] FIG2 is an exploded view of the electronic device shown in FIG1 ;

[0054] FIG3 is a schematic structural diagram of the electronic device shown in FIG1 in an open state;

[0055] FIG4 is an exploded view of the electronic device shown in FIG3 ;

[0056] FIG5 is an exploded view of a host of an electronic device provided in an embodiment of the present application;

[0057] FIG6 a is a simplified structural diagram of the electronic device shown in FIG3 ;

[0058] FIG6b is a simplified structural diagram of the electronic device shown in FIG6a from another angle;

[0059] FIG7 is a schematic structural diagram of the electronic device shown in FIG1 opened to another angle;

[0060] FIG8 is a schematic structural diagram of the electronic device shown in FIG1 opened to another angle;

[0061] FIG9 is a schematic structural diagram of a first rotating module provided in an embodiment of the present application;

[0062] FIG10 is a schematic structural diagram of a first rotating shaft assembly provided in an embodiment of the present application;

[0063] FIG11 is an exploded view of the first rotating shaft assembly shown in FIG10 ;

[0064] FIG12 is a schematic structural diagram of a conjoined cam provided in an embodiment of the present application;

[0065] FIG13 is a schematic diagram of a motion mechanism of a keyboard assembly of a first rotating shaft assembly provided in an embodiment of the present application;

[0066] FIG14 is another structural schematic diagram of the first rotating shaft assembly provided in an embodiment of the present application;

[0067] FIG15 is a structural schematic diagram of a connecting member of the first rotating shaft assembly shown in FIG14;

[0068] FIG16 is another schematic structural diagram of the first rotating shaft assembly provided in an embodiment of the present application;

[0069] FIG17 is another schematic structural diagram of the first rotating shaft assembly provided in an embodiment of the present application;

[0070] FIG18 is a schematic diagram of the assembly relationship between the connecting member of the first rotating shaft assembly shown in FIG17 and the first stop member and the second stop member;

[0071] FIG19 is another schematic structural diagram of the first rotating shaft assembly provided in an embodiment of the present application;

[0072] FIG20 is a schematic diagram of the assembly relationship between the conjoined cam, the first cam member, and the second cam member of the first rotating shaft assembly shown in FIG19;

[0073] FIG21 is another structural diagram of a keyboard assembly provided in an embodiment of the present application;

[0074] FIG22 is a cross-sectional view taken along line AA of the keyboard assembly shown in FIG21 ;

[0075] FIG23 is a schematic diagram of the motion mechanism of the keyboard assembly shown in FIG21;

[0076] FIG24 is another structural diagram of a keyboard assembly provided in an embodiment of the present application;

[0077] FIG25 is an enlarged view of the partial structure of the keyboard assembly at point B shown in FIG24;

[0078] FIG26 is another structural diagram of a keyboard assembly provided in an embodiment of the present application;

[0079] FIG27 is an enlarged view of the partial structure of the keyboard assembly shown in FIG26 at position C;

[0080] FIG28 a is a rendering of the appearance of a keyboard assembly formed using a conventional process;

[0081] FIG28b is an enlarged view of the local structure of the keyboard assembly at position G shown in FIG28a;

[0082] FIG29a is an appearance rendering of a keyboard assembly provided in an embodiment of the present application;

[0083] FIG29 b is an enlarged view of the local structure at H of the structure shown in FIG29 a ;

[0084] 29c to 29e are flow charts of a lamination process of a flexible material layer according to an embodiment of the present application;

[0085] FIG30 is a schematic structural diagram of a second rotating module provided in an embodiment of the present application;

[0086] FIG31 a is a schematic structural diagram of a second rotating shaft assembly provided in an embodiment of the present application;

[0087] FIG31 b is a schematic structural diagram of a first rotating bracket provided in an embodiment of the present application;

[0088] FIG32 a is a DD cross-sectional view of the second rotating shaft assembly shown in FIG31 a , which can be used to illustrate the structure of the first connecting portion;

[0089] FIG32 b is a cross-sectional view taken along line EE of the second rotating shaft assembly shown in FIG31 a ;

[0090] FIG32c is a view of the structure shown in FIG32a in the direction of arrow F;

[0091] FIG33 is a cross-sectional view of another assembly structure of the first rotating bracket and the second rotating bracket provided in an embodiment of the present application;

[0092] FIG34 is another structural diagram of a keyboard assembly provided in an embodiment of the present application;

[0093] FIG35 a is another structural schematic diagram of a keyboard assembly provided in an embodiment of the present application;

[0094] FIG35 b is a schematic structural diagram of an electronic device using the keyboard assembly shown in FIG35 a ;

[0095] FIG36 is another structural diagram of a keyboard assembly provided in an embodiment of the present application;

[0096] FIG37 is a schematic structural diagram of the connection between the second support plate and the support arm of the keyboard assembly shown in FIG36 ;

[0097] FIG38 is another structural diagram of a keyboard assembly provided in an embodiment of the present application;

[0098] Figure 39 is a schematic diagram of a topological structure of a power supply system for an electronic device provided in an embodiment of the present application.

[0099] Reference numerals: 1000 - keyboard assembly; 11 - keyboard body; 1101 - key; 1102 - touch panel; 1103 - fourth magnetic member; 1104 - first pen tray; 1105 - main circuit board; 11051 - mainboard processor; 12 - support assembly; 1201 - first support plate; 12011 - first board edge; 12012 - second board edge; 12013 - second pen tray; 12014 - first surface; 120141 - inclined surface; 12015 - second surface; 12016 - charging control circuit board; 120161 - charging controller; 120162 - overvoltage protection load switch; 12017 - connector; 12018 - power interface; 12019 - flexible circuit board; 1202 - Second support plate; 12021 - Third plate edge; 12022 - Fourth plate edge; 1203 - Third support plate; 12031 - Fifth plate edge; 12032 - Second magnetic member; 13 - First rotating module; 1301 - First rotating shaft assembly; 13011 - First axis; 130111 - First slot; 130112 - First helical surface; 13012 - Second axis; 130121 - Second slot; 130122 - Second helical surface; 13013 - First fixing bracket; 130131 - First plug-in portion; 13014 - Second fixing bracket; 130141 - Second plug-in portion; 1312 - Connecting member; 13121 - First stop portion; 13122 - Third stop portion; 13123 - Fifth cam surface; 131231 - fifth recess; 131232 - sixth recess; 131233 - third protrusion; 131234 - fifth inclined surface; 131235 - sixth inclined surface; 13124 - seventh cam surface; 1313 - first stopper; 13131 - second stopper; 13132 - sixth cam surface; 1314 - second stopper; 13141 - fourth stopper; 13142 - eighth cam surface; 13015 - conjoined cam; 130151 - first cam surface; 1301511 - first recess; 1301512 - second recess; 1301513 - first protrusion; 1301514 - first inclined surface; 1301515 - second inclined surface; 130152 - third cam surface; 13016 - First cam member; 130161 - Second cam surface; 13017 - Second cam member; 130171 - Fourth cam surface; 13018 - First elastic component; 13019 - Second elastic component; 13020 - Connecting member; 13021 - First nut; 13022 - Second nut; 13023 - Washer; 13024 - Idle gear; 13025 - First clip; 13026 - Second clip; 13027 - Connecting member; 130271 - Fifth stopper; 130272 - Sixth stopper; 13028 - First rotating shaft; 1302 - Main shaft; 130201 - Main inner shaft; 130202 - Main outer shaft;14 - Second rotation module; 1401 - Second rotation axis; 1402 - Second rotation axis assembly; 14021 - First rotation bracket; 140211 - First connecting plate; 140212 - First connecting arm; 1402121 - First connecting portion; 14021211 - Axis hole; 1402122 - First arc-shaped rotation portion; 14022 - Second rotation bracket; 140221 - Second connecting plate; 140222 - Second connecting arm; 1402221 - Second connecting portion; 1402222 - Second arc-shaped rotation portion; 15 - Stylus; 2000 - Main unit; 21 - Front cover; 2101 - Display screen; 22 - Middle frame; 23 - Back cover; 2301 - Mounting slot; 24 - First magnetic member; 25 - Third magnetic member; 26 - Support arm; 271 - First flexible material layer; 272 - Second flexible material layer; 28 - Oil edge; 29 - Appearance ridge; 210 - Host auxiliary processor; 211 - Battery; 212 - Power manager; 3 - Cable. DETAILED DESCRIPTION

[0100] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments set forth herein. The same figure marks in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all explained with reference to the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings in the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0101] It should be noted that the following description sets forth specific details to facilitate understanding of the present application. However, the present application can be implemented in a variety of other ways than those described herein, and those skilled in the art may make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0102] To facilitate understanding of the keyboard assembly provided by this application, its application scenarios are first introduced below. The keyboard assembly provided by the embodiment of this application can be applied to, but not limited to, mobile phones, calculators, tablet computers or personal digital assistants (PDAs) for light office use, etc.

[0103] As the primary input device for office and gaming use cases, the keyboard assembly provides input while also supporting the main electronic device. When an electronic device supported by the keyboard assembly is opened and in use, the keyboard assembly forms a triangular support area within which the center of gravity of the main electronic device falls, effectively supporting the main electronic device.

[0104] At present, in order to meet the requirements of smooth opening of electronic devices and the support requirements of electronic devices in the open state, the structure of the keyboard assembly is usually more complicated, which leads to the larger weight and size of the keyboard assembly, which in turn affects the weight and size of the entire electronic device using the keyboard assembly. It is difficult to adapt to the current development trend of lighter and smaller electronic devices.

[0105] In view of this, the keyboard assembly provided by this application, through multi-rod motion, can meet the requirements of smooth opening of the electronic device while providing reliable support for the host of the electronic device when the electronic device is in the open state. The structure of this keyboard assembly is relatively simple, which is conducive to the miniaturization design of the keyboard assembly, thereby meeting the design requirements of lightweight and miniaturized electronic devices, meeting the portability requirements of users, and improving the user experience. To facilitate understanding of the keyboard assembly provided by this application, it is described in detail below in conjunction with specific embodiments.

[0106] Referring to Figure 1, Figure 1 is a schematic diagram of an application scenario of a keyboard assembly provided in an embodiment of the present application. This embodiment illustrates a structure of an electronic device in a closed state using a keyboard assembly 1000. The electronic device includes the keyboard assembly 1000 and a host 2000. The keyboard assembly 1000 includes a keyboard body 11 and a support assembly 12. In the closed state shown in Figure 1, the keyboard body 11 and the support assembly 12 are arranged relative to each other, with the host located between the keyboard body 11 and the support assembly 12.

[0107] Referring to Figure 2, which is an exploded view of the electronic device shown in Figure 1, a keyboard body 11 includes a plurality of keys 1101, which a user can tap to access the input functions of the keyboard assembly 1000. A support assembly 12 is connected to one end of the keyboard body 11, and the support assembly 12 is rotatably connected to the end of the keyboard body 11.

[0108] It is understood that when the electronic device is in the closed state shown in Figure 1, the keyboard assembly 1000 can also protect the host 2000. When the electronic device needs to be used, the user can open the electronic device along the arrow direction shown in Figure 1.

[0109] Referring to Figure 3, Figure 3 is a schematic structural diagram of the electronic device shown in Figure 1 in an open state. In the present application, the support assembly 12 can be connected to the host 2000 of the electronic device. When the electronic device moves from the closed state shown in Figure 1 to the open state shown in Figure 3, the host 2000 drives the support assembly 12 to rotate around the end of the keyboard body 11 to achieve the opposite movement of the support assembly 12 and the keyboard body 11. When the electronic device is opened to the use state, the support assembly 12 can support the host 2000. In addition, the display screen of the host 2000 can be used to display the content input through the keys 1101 of the keyboard body 11.

[0110] As shown in FIG3 , the keyboard body 11 may further include a touch panel 1102, through which the user can perform touch operations on the electronic device. Furthermore, a control circuit, a battery, or some sensors (such as an infrared sensor, an ultrasonic sensor, or a fingerprint sensor, etc.) may also be provided within the keyboard body 11. The control circuit may provide circuit control functions for the keyboard body 11, and the sensors may provide functions such as signal triggering. Furthermore, the battery within the keyboard body 11 may be used to maintain normal operation of the keyboard body 11 when no external power is supplied.

[0111] In the present application, to enable the keyboard assembly 1000 to support the host 2000, the support assembly 12 may include multiple connected support plates. For example, refer to FIG4 , which is an exploded view of the electronic device shown in FIG3 . The support assembly 12 includes a first support plate 1201 and a second support plate 1202. The first support plate 1201 includes a first plate edge 12011 and a second plate edge 12012 disposed opposite each other. The second support plate 1202 includes a third plate edge 12021. The first plate edge 12011 and the third plate edge 12021 are rotatably connected to each other, thereby achieving a rotatable connection between the first support plate 1201 and the second support plate 1202. Furthermore, the second plate edge 12012 is rotatably connected to one end of the keyboard body 11, thereby achieving a rotatable connection between the first support plate 1201 and the keyboard body 11, thereby achieving a rotatable connection between the support assembly 12 and the keyboard body 11.

[0112] The keyboard assembly 1000 provided in this embodiment of the present application may also include a stylus 15. To facilitate storage of the stylus 15, the keyboard body 11 is provided with a first pen slot 1104, which accommodates the stylus 15. Furthermore, the first support plate 1201 may also be provided with a second pen slot 12013. When the keyboard assembly 1000 is closed, the first pen slot 1104 and the second pen slot 12013 are positioned opposite each other, allowing the stylus 15 to be accommodated between them. This allows for a thin design of the keyboard assembly 1000 while still providing ample storage for the stylus 15.

[0113] 3 and 4 , in this embodiment of the present application, the support assembly 12 may further include a third support plate 1203, with the second support plate 1202 positioned between the third support plate 1203 and the first support plate 1201. The second support plate 1202 may further include a fourth plate edge 12022, which is disposed opposite the third plate edge 12021. Furthermore, the third support plate 1203 may include a fifth plate edge 12031, which is rotatably connected to the fourth plate edge 12022 to achieve a rotatable connection between the second support plate 1202 and the third support plate 1203.

[0114] In the present application, the third support plate 1203 can be used to be detachably connected to the host 2000. There are multiple ways to connect the third support plate 1203 to the host 2000. For example, the third support plate 1203 and the host 2000 can be connected by magnetic attraction. For specific implementation, please refer to Figure 5, which is an exploded view of the host 2000 of the electronic device provided in an embodiment of the present application. The host 2000 may include a front cover 21, a middle frame 22 and a back cover 23. The front cover 21 includes a display screen 2101. The middle frame 22 is located between the front cover 21 and the back cover 23. The front cover 21 and the back cover 23 are both buckled with the middle frame 22, and the various functional components of the host 2000 are encapsulated between the front cover 21 and the back cover 23.

[0115] 5 , the host 2000 may include a first magnetic component 24 , which may be located between the back cover 23 and the middle frame 22 . The first magnetic component 24 may be set on the back cover 23 or on the middle frame 22 . For example, in FIG5 , the back cover 23 is provided with an installation slot 2301 , and the first magnetic component 24 is installed in the installation slot 2301 .

[0116] 6a is a simplified structural diagram of the electronic device shown in FIG3. The third support plate 1203 is further provided with a second magnetic member 12032, which is configured to attract the first magnetic member 24, thereby achieving a detachable connection between the third support plate 1203 and the back cover 23 of the host 2000 through magnetic attraction.

[0117] In this application, the specific types of the first magnetic member 24 and the second magnetic member 12032 are not limited. They can be structural members such as magnets that are inherently magnetic, or structural members that are non-magnetic but can be attracted by magnets. For example, the first magnetic member 24 is a magnet, and the second magnetic member 12032 is a magnet or a non-magnetic structural member, as long as the first magnetic member 24 and the second magnetic member 12032 can achieve an attraction effect.

[0118] It is worth mentioning that in order to improve the adsorption reliability of the third support plate 1203 and the host 2000, in an embodiment of the present application, the host 2000 may include multiple first magnetic parts 24, the third support plate 1203 may include multiple second magnetic parts 12032, and the multiple first magnetic parts 24 are adsorbed one-to-one with the multiple second magnetic parts 12032; or, when the setting area of ​​the second magnetic part 12032 of the third support plate 1203 is large enough, multiple first magnetic parts 24 can also be adsorbed with the same second magnetic part 12032.

[0119] The above description of this application only provides some exemplary explanations of the magnetic attraction method between the third support plate 1203 and the host 2000. Based on this, some adaptive variations can be made to the specific methods of achieving magnetic attraction between the two. They will not be introduced one by one here, but they should all be understood to fall within the scope of protection of this application.

[0120] In addition, in addition to being connected magnetically, the third support plate 1203 and the host 2000 may also be connected in other possible ways. For example, the third support plate 1203 may be provided with a slot that matches the outer contour of the host 2000, and the host 2000 may be installed in the slot, thereby achieving a detachable connection between the third support plate 1203 and the host 2000 through a snap-on connection. In the embodiments of the present application, any other possible methods may be used to achieve a detachable connection between the third support plate 1203 and the host 2000. These methods will not be described one by one here, but they should all be understood to fall within the scope of protection of this application.

[0121] 5 , the host 2000 further includes a third magnetic member 25, which is located at one end of the host 2000. In addition, referring to FIG6 b , FIG6 b is a schematic structural diagram of the electronic device shown in FIG6 a at another angle. The keyboard body 11 further includes a fourth magnetic member 1103, and the third magnetic member 25 is attracted to the fourth magnetic member 1103. In this way, when the electronic device is in the open state, the third magnetic member 25 and the fourth magnetic member 1103 are attracted to each other, and the outer surface of the first support plate 1201 facing away from the host 2000 is coplanar or approximately coplanar with the outer surface of the keyboard body 11 facing away from the host. Then, a triangular support structure or an approximately triangular support structure is formed between the host 2000, the second support plate 1202, and the structure formed by connecting the first support plate 1201 and the keyboard body 11. At this time, the host 2000 can stay stably at this open angle.

[0122] In the present application, the opening angle of the electronic device can be understood as the angle between the host 2000 and the keyboard body 11 away from the support assembly 12, such as the angle α shown in Figure 6a. It can be understood that in the present application, by adjusting the setting position of the fourth magnetic member 1103, the adjustment of the stay angle of the host 2000 in the open state can be achieved. Continuing to refer to Figures 6a and 6b, in an embodiment of the present application, the keyboard body 11 may include a plurality of fourth magnetic members 1103 arranged in sequence along the first support plate 1201 away from the support assembly 12. In this way, the spacing between the plurality of fourth magnetic members 1103 can be adjusted so that when the third magnetic member 25 of the host 2000 is adsorbed with the fourth magnetic members 1103 of the keyboard body 11 arranged at different positions, the host 2000 can stay at the corresponding opening angle. For example, in FIG3 , the opening angle of the electronic device is 120°; for another example, in the electronic device shown in FIG7 , the opening angle of the electronic device is 125°; and for another example, in the electronic device shown in FIG8 , the opening angle of the electronic device can be 175°, which can be used in scenarios such as handwriting, drawing, or reading. In the present application, by connecting the host 2000 and the keyboard body 11 by magnetic attraction, it is conducive to achieving infinite adjustment of the opening angle of the host 2000, thereby meeting the user's usage requirements at different opening angles, which is conducive to improving the user experience and thus enhancing the product competitiveness of the electronic device.

[0123] It is understood that in the embodiment of the present application, when the electronic device is opened, the host 2000 drives the third support plate 1203 to rotate in a direction away from the keyboard body 11, the third support plate 1203 drives the second support plate 1202 to rotate in a direction away from the keyboard body 11, and the second support plate 1202 drives the first support plate to rotate in a direction away from the keyboard body 11. When the host 2000 is opened to the set opening angle, the third magnetic member 25 of the host 2000 adsorbs the fourth magnetic member 1103 at the corresponding position of the keyboard body 11, so that the host 2000 can remain stably at the corresponding opening angle. The closing process of the electronic device is the reverse process of the above-mentioned opening process and will not be described in detail here.

[0124] From the above description of the principle of the support assembly 12 of the keyboard assembly 1000 provided in the embodiment of the present application supporting the host 2000, and the introduction of the opening and closing process of the electronic device using the keyboard assembly 1000 provided in the present application, it can be understood that the movement trajectory of each support plate of the support assembly 12 of the keyboard assembly 1000 plays a key role in whether the electronic device can be opened smoothly and whether the host 2000 can stay stably at the set opening angle. The rotation implementation method between the first support plate 1201 and the keyboard body 11 has an important influence on the rotation of the entire support assembly 12 relative to the keyboard body 11. Based on this, the implementation method of the rotation connection between the first support plate 1201 and the keyboard body 11 of the keyboard assembly 1000 provided in the embodiment of the present application is specifically introduced in combination with specific application scenarios.

[0125] In the embodiment of the present application, as shown in Figures 1 to 4, the keyboard assembly 1000 further includes a first rotating module 13, a first support plate 1201 is rotatably connected to the first rotating module 13, and the keyboard body 11 is rotatably connected to the first rotating module 13, thereby achieving a rotatable connection between the first support plate 1201 and the keyboard body 11. It will be understood that the process of the first support plate 1201 and the keyboard body 11 rotating about the first rotating module 13 is the process of the support assembly 12 and the keyboard body 11 moving toward or away from each other.

[0126] When specifically configuring the first rotating module 13, reference may be made to FIG9 , which is a schematic structural diagram of the first rotating module 13 provided in an embodiment of the present application. The first rotating module 13 includes a first rotating shaft assembly 1301 and a main shaft 1302. The main shaft 1302 can serve as a bearing structure for the first rotating shaft assembly 1301. The main shaft 1302 includes a main inner shaft 130201 and a main outer shaft 130202. The main inner shaft 130201 and the main outer shaft 130202 are arranged to form an accommodation space, and a portion of the first rotating shaft assembly 1301 is installed in the accommodation space between the main inner shaft 130201 and the main outer shaft 130202.

[0127] In the present application, the first support plate 1201 and the keyboard body 11 can be rotatably connected via a first rotating shaft assembly 1301. To improve the reliability of the rotational connection between the first support plate 1201 and the keyboard body 11, the first rotating module 13 may include multiple first rotating shaft assemblies 1301. For example, the first rotating module 13 shown in FIG9 includes two first rotating shaft assemblies 1301, and along the axial direction of the first rotating module 13, the two first rotating shaft assemblies 1301 are respectively located at two opposite ends of the main shaft 1302.

[0128] It can be understood that in some other possible embodiments of the present application, the first rotating module 13 can also include only one first rotating shaft assembly 1301, so that the reliability of the rotational connection between the first support plate 1201 and the keyboard body 11 through the first rotating module 13 can be ensured through multiple points of connection between the first support plate 1201 and the keyboard body 11 and the first rotating shaft assembly 1301.

[0129] Referring to Figure 10, Figure 10 is a schematic diagram of the structure of a first rotating shaft assembly 1301 provided in an embodiment of the present application. The first rotating shaft assembly 1301 includes a first shaft 13011 and a second shaft 13012. In the present application, the axis of the first shaft 13011 and the axis of the second shaft 13012 are parallel but not coincident, and the axial directions of the first shaft 13011 and the second shaft 13012 are the same as the axial direction of the first rotating module 13.

[0130] As shown in Figure 10, the first rotating shaft assembly 1301 also includes a first fixing frame 13013 and a second fixing frame 13014. The first fixing frame 13013 is fixedly connected to the first support plate, and the second fixing frame 13014 is fixedly connected to the end of the keyboard body. In addition, the first fixing frame 13013 can be disposed at the end of the first shaft 13011 and is used to drive the first shaft 13011 to rotate synchronously. Similarly, the second fixing frame 13014 is disposed at the end of the second shaft 13012 and is used to drive the second shaft 13012 to rotate synchronously. For a specific implementation, refer to Figure 11, which is an exploded view of the first rotating shaft assembly 1301 shown in Figure 10. The end of the first fixing frame 13013 facing the first shaft 13011 includes a first plugging portion 130131, and the end of the first shaft 13011 includes a first slot 130111. The first plugging portion 130131 is inserted into the first slot 130111, thereby limiting the relative movement of the first fixing frame 13013 and the first shaft 13011 in the rotational direction through a snap-fitting manner. Similarly, the end of the second fixing frame 13014 facing the second shaft 13012 includes a second plugging portion 130141. The end of the second shaft 13012 includes a second slot 130121. The second plugging portion 130141 is inserted into the second slot 130121, thereby limiting the relative movement of the second fixing frame 13014 and the second shaft 13012 in the rotational direction through a snap-fitting manner.

[0131] In the present application, the first fixing frame 13013 and the first axis 13011, as well as the second fixing frame 13014 and the second axis 13012, are fixed in the rotation direction by the above-mentioned clamping method. During the assembly of the keyboard assembly, the first fixing frame 13013 can be first fixedly connected to the first support plate, and the second fixing frame 13014 can be fixedly connected to the keyboard body, and then the first fixing frame 13013 and the second fixing frame 13014 can be clamped to the corresponding axes, which is conducive to improving the flexibility of assembling the first support plate and the keyboard body.

[0132] It is worth mentioning that in the present application, other possible methods can also be used to achieve the fixation of the relative positions of the first fixing frame 13013 and the first axis 13011, and the second fixing frame 13014 and the second axis 13012 in the rotation direction. For example, the first fixing frame 13013 and the first axis 13011 can be an integrally molded structure, and the second fixing frame 13014 and the second axis 13012 can be an integrally molded structure, which is conducive to simplifying the structure of the first rotating shaft assembly 1301.

[0133] The above are only some exemplary descriptions of the connection methods between the first fixing frame 13013 and the first axis 13011, and the second fixing frame 13014 and the second axis 13012 of the present application. On this basis, the first fixing frame 13013 and the first axis 13011, and the second fixing frame 13014 and the second axis 13012 can also be connected in any other possible manner, which will not be introduced one by one here, but they should all be understood to fall within the scope of protection of the present application.

[0134] In addition, as shown in FIG. 10 and FIG. 11 , in the present application, the first fixing frame 13013 and the second fixing frame 13014 may be located on the same axial side of the first rotating shaft assembly 1301 , which is beneficial to improving the rotational stability of the first rotating assembly 1301 .

[0135] Continuing with reference to Figure 11, the first rotating shaft assembly 1301 may further include a connecting member 1312, which is simultaneously sleeved on the first shaft 13011 and the second shaft 13012. In specific implementation, the connecting member 1312 includes a first shaft hole (not shown in Figure 11) and a second shaft hole (not shown in Figure 11), the first shaft 13011 is passed through the first shaft hole, and the second shaft 13012 is passed through the second shaft hole.

[0136] Continuing with FIG11 , the first rotating shaft assembly 1301 further includes a first stopper 1313 and a second stopper 1314. The connecting member 1312 is positioned between the first fixing bracket 13013 and the first stopper 1313, and the connecting member 1312 is positioned between the second fixing bracket 13014 and the second stopper 1314. The first stopper 1313 is sleeved onto the first shaft 13011. The relative position of the first stopper 1313 and the first shaft 13011 is fixed in the rotational direction of the first shaft 13011. The end of the connecting member 1312 facing the first stopper 1313 includes a first stop portion 13121, and the end of the first stopper 1313 facing the connecting member 1312 includes a second stop portion 13131. In the rotational direction of the first shaft 13011, the side surface of the first stop portion 13121 is disposed opposite the side surface of the second stop portion 13131.

[0137] Similarly, the fourth stopper 13141 is sleeved on the second shaft 13012. In the rotational direction of the second shaft 13012, the relative position of the fourth stopper 13014 and the second shaft 13012 is fixed. The end of the connecting member 1312 facing the fourth stopper 13014 includes a third stopper 13122, and the end of the fourth stopper 13014 facing the connecting member 1312 includes a fourth stopper 13141. In the rotational direction of the second shaft 13012, the side surface of the third stopper 13122 and the side surface of the fourth stopper 13141 are arranged opposite each other.

[0138] It can be understood that during the rotation of the first shaft 13011, when the side of the second stop portion 13131 of the first stop member 1313 abuts the side of the first stop portion 13121 of the connecting member 1312, the first shaft 13011 stops rotating; and during the rotation of the second shaft 13012, when the side of the fourth stop portion of the fourth stop portion 13141 abuts the side of the third stop portion 13122 of the connecting member 1312, the second shaft 13012 stops rotating.

[0139] It can be seen from this that in the present application, the first stop portion 13121 and the third stop portion 13122 of the connecting member 1312, the second stop portion 13131 of the first stop member 1313 and the fourth stop portion 13141 can be adjusted to adjust the rotation angle of the first axis 13011 and the second axis 13012, thereby achieving adjustment of the maximum angle of relative rotation between the first support plate 1201 and the keyboard body 11. For example, in the present application, the first stop portion 13121 and the third stop portion 13122 of the connecting member 1312, the second stop portion 13131 of the first stop member 1313, and the fourth stop portion 13141 can be adjusted to adjust the setting position so that the maximum rotation angle of the first support plate 1201 relative to the keyboard body 11 is 180°, so that the outer surface of the first support plate 1201 can be coplanar with the outer surface of the keyboard body 11, which is beneficial to improving the support stability of the triangular support structure formed by the support assembly 12.

[0140] It is worth mentioning that in actual design, affected by design tolerances and production conditions, the first rotating module 13 of the keyboard assembly 1000 adopts the first rotating shaft assembly 1301 introduced above in this application, and the maximum rotation angle of the first support plate 1201 relative to the keyboard body 11 can be approximately 180°, and exemplarily can be 180°±5°. That is to say, when the keyboard assembly 1000 is in the open state, the angle between the outer surface of the first support member 1201 facing away from the key 1101 and the outer surface of the keyboard body 11 facing away from the key 1101 is greater than or equal to 175° and less than or equal to 185°, so that the outer surface of the above-mentioned first support plate 1201 is approximately coplanar with the outer surface of the keyboard body 11, which can reduce the design difficulty of the first rotating shaft assembly 1301 while meeting the support reliability requirements of the support assembly 12.

[0141] 11 , the first rotating shaft assembly 1301 further includes a conjoined cam 13015. The first stopper 1313 is located between the connecting member 1312 and the conjoined cam 13015, and the fourth stopper 13141 is located between the connecting member 1312 and the conjoined cam 13015. The conjoined cam 13015 is sleeved on both the first shaft 13011 and the second shaft 13012. Specifically, the conjoined cam 13015 includes a third shaft hole (not shown in FIG. 11 ) and a fourth shaft hole (not shown in FIG. 11 ). The first shaft 13011 is inserted through the third shaft hole, and the second shaft 13012 is inserted through the fourth shaft hole.

[0142] In addition, first rotating shaft assembly 1301 further includes a first cam member 13016 and a second cam member 13017. Conjoined cam member 13015 is located between first stop member 1313 and first cam member 13016, and conjoined cam member 13015 is located between second stop member 1314 and second cam member 13017. First cam member 13016 is sleeved around first shaft 13011, and the relative positions of first cam member 13016 and first shaft 13011 are fixed in the rotational direction of first shaft 13011. Fourth cam member 13017 is sleeved around second shaft 13012, and the relative positions of fourth cam member 13017 and second shaft 13012 are fixed in the rotational direction of second shaft 13012.

[0143] Referring to Figure 12, Figure 12 is a schematic diagram of the structure of a conjoined cam 13015 provided in an embodiment of the present application. Referring also to Figures 11 and 12, the end of the conjoined cam 13015 facing the first cam member 13016 includes a first cam surface 130151, and the end of the conjoined cam 13015 facing the fourth cam surface 130171 includes a third cam surface 130152. Furthermore, the end of the first cam member 13016 facing the conjoined cam 13015 includes a second cam surface 130161. The end of the fourth cam surface 130171 facing the conjoined cam 13015 includes a fourth cam surface.

[0144] In the present application, the cam surface may include a raised portion and a recessed portion, with an inclined surface present during the transition from the raised portion to the recessed portion, or vice versa. When the raised portion of one of the two cam surfaces is located within the recessed portion of the other cam surface, the extrusion force between the two cam surfaces is relatively small, and the damping force for the relative motion between the two cam surfaces is relatively small. However, when the inclined surfaces of the two cam surfaces come into contact, the extrusion force between the two cam surfaces increases, and the damping force for the relative motion between the two cam surfaces increases. Therefore, it can be seen that when the raised portions of the two cam surfaces are arranged relative to each other, the extrusion force between the two cam surfaces is the greatest, and the damping force for the relative motion between the two cam surfaces is the greatest.

[0145] Based on this, in the embodiment of the present application, as shown in FIG11 , the first rotating shaft assembly 1301 further includes a first elastic assembly 13018 and a second elastic assembly 13019. The first elastic assembly 13018 is sleeved around the first shaft 13011 and can provide an elastic force along the axial direction of the first shaft 13011. The first cam member 13016 is located between the integrated cam 13015 and the first elastic assembly 13018. The first elastic assembly 13018 abuts against the end face of the first cam member 13016 facing away from the integrated cam 13015. Under the elastic force of the first elastic assembly 13018, the second cam surface 130161 of the first cam member 13016 abuts against the first cam surface 130151 of the integrated cam 13015. Furthermore, the second elastic assembly 13019 is sleeved around the second shaft 13012 and can provide an elastic force along the axial direction of the second shaft 13012. The fourth cam surface 130171 is located between the connected cam 13015 and the second elastic component 13019, and the second elastic component 13019 abuts against the end surface of the fourth cam surface 130171 facing away from the connected cam 13015. Under the elastic force of the second elastic component 13019, the fourth cam surface 130171 abuts against the third cam surface 130152 of the connected cam 13015.

[0146] In this way, during the process of the first support plate 1201 and the keyboard body 11 rotating away from each other, the raised portion of the first cam surface 130151 moves from the recessed portion of the second cam surface 130161 to the raised portion of the second cam surface 130161, and the raised portion of the third cam surface 130152 moves from the recessed portion of the fourth cam surface 130171 to the raised portion of the fourth cam surface 130171, and when the first support plate 1201 and the keyboard body 11 rotate away from each other to a set angle, the side surface of the first stop portion 13121 abuts against the side surface of the second stop portion 13131, the raised portion of the first cam surface 130151 abuts against the raised portion of the second cam surface 130161; and when the side surface of the third stop portion 13122 abuts against the side surface of the fourth stop portion 13141, the raised portion of the third cam surface 130152 abuts against the raised portion of the fourth cam surface 130171.

[0147] In the embodiment of the present application, the specific setting type of the first elastic component and the second elastic component is not limited. It can be an exemplary spring component including multiple springs, or a spring, etc., which can be specifically selected according to the requirements of the first rotating shaft component 1301 for the elastic force.

[0148] The first hinge assembly 1301 of the keyboard assembly 1000 provided in this application adopts the above-mentioned design, which can ensure that the keyboard assembly 1000 can be opened smoothly while also allowing the keyboard assembly 1000 to be stably maintained at the corresponding opening angle under the action of the damping force at the end of the opening. Therefore, when the electronic device using the keyboard assembly 1000 provided in this application is opened, even if it is subjected to a certain external impact force, it will not easily shake, which is conducive to improving the user experience and thus enhancing the competitiveness of the product. In addition, the first hinge assembly 1301 adopts the above-mentioned design, and can also provide the user with a certain operational damping feel when the user opens the electronic device, thereby improving the user experience.

[0149] In addition to the aforementioned structure, the first rotating shaft assembly 1301 provided in the embodiment of the present application may also include other possible structures. For example, referring again to FIG. 11 , the first rotating shaft assembly 1301 further includes a connector 13020, which is sleeved onto both the first shaft 13011 and the second shaft 13012. In a specific implementation, the connector 13020 includes a fifth axial hole and a sixth axial hole, with the first shaft 13011 extending through the fifth axial hole and the second shaft 13012 extending through the sixth axial hole. This can improve the structural reliability of the first rotating shaft assembly 1301 and enhance the rotational stability of the first shaft 13011 and the second shaft 13012.

[0150] Furthermore, as shown in FIG11 , first elastic component 13018 may be located between first cam member 13016 and connecting member 13020, and first elastic component 13018 abuts against first cam member 13016 and connecting member 13020, respectively. Second elastic component 13019 may be located between second cam member 13017 and connecting member 13020, and second elastic component 13019 abuts against second cam member 13017 and connecting member 13020, respectively. This allows first elastic component 13018 and second elastic component 13019 to be pressed toward their corresponding cam members via connecting member 13020, thereby improving the consistency of the elastic forces generated by first elastic component 13018 and second elastic component 13019, thereby enhancing the rotational stability of first shaft 13011 and second shaft 13012 of first rotating shaft assembly 1301.

[0151] It is understood that in first rotating shaft assembly 1301 shown in FIG11 , since first elastic assembly 13018 is located on the side of first stopper 1313 facing away from connecting member 1312 and is also located between first stopper 1313 and connecting member 13020, first elastic assembly 13018 can press first stopper 1313 toward connecting member 1312. Furthermore, second elastic assembly 13019 is located on the side of second stopper 1314 facing away from connecting member 1312 and is also located between second stopper 1314 and connecting member 13020, second elastic assembly 13019 can press second stopper 1314 toward connecting member 1312. From this, it can be understood that in the first rotating shaft assembly 1301, adjacent parts arranged on the first shaft 13011 abut against each other, and adjacent parts arranged on the second shaft 13012 abut against each other, which is beneficial to improving the structural compactness of the first rotating shaft assembly 1301.

[0152] To prevent parts mounted on the first shaft 13011 and the second shaft 13012 from falling off, in the present application, the first rotating shaft assembly 1301 may further include a first nut 13021 and a second nut 13022. The end of the first shaft 13011 facing away from the first fixing frame 13013 has external threads, and the first nut 13021 is screwed into the external threads of the first shaft 13011 to achieve a threaded connection between the first nut 13021 and the end of the first shaft 13011 facing away from the first fixing frame 13013. Thus, while the first nut 13021 limits the position of various structures mounted on the first shaft 13011, it can also squeeze the first elastic assembly 13018, so that the first elastic assembly 13018 accumulates an elastic force along the axial direction of the first shaft 13011.

[0153] Similarly, the end of the second shaft 13012 facing away from the second fixing frame 13014 has an external thread, and the second nut 13022 is screwed into the external thread of the second shaft 13012 to achieve a threaded connection between the second nut 13022 and the end of the second shaft 13012 facing away from the second fixing frame 13014, so that while the second nut 13022 is used to limit the various structures installed on the second shaft 13012, the second elastic component 13019 can also be squeezed to allow the second elastic component 13019 to accumulate an elastic force along the axial direction of the second shaft 13012.

[0154] As shown in FIG11 , in the first rotating shaft assembly 1301 provided herein, washers 13023 may be disposed between the connector 13020 and the first elastic component 13018, and between the connector 13020 and the first nut 13021. These washers 13023 can reduce the risk of axial wobble of various structures mounted on the first shaft 13011, thereby improving the rotational stability of the first shaft 13011. Similarly, washers 13023 can be disposed between the connector 13020 and the second elastic component 13019, and between the connector 13020 and the second nut 13022, thereby reducing the risk of axial wobble of various structures mounted on the second shaft 13012, thereby improving the rotational stability of the first shaft 13011. It will be appreciated that the thickness of the washers 13023 can be selected based on the length of each shaft and the lengths of other structural components mounted on each shaft.

[0155] It is worth mentioning that, in the present application, in addition to using the first nut 13021 and the second nut 13022 as the limiting structural components, the first rotating shaft assembly 1301 may also use a retaining spring as the limiting structural component. The retaining spring may be simultaneously clamped on the first shaft 13011 and the second shaft 13012. This retaining spring can not only limit the various structures installed on the first shaft 13011 and the second shaft 13012, but also improve the structural reliability of the first rotating shaft assembly 1301. Of course, the first rotating shaft assembly 1301 may also use other possible configurations to achieve the limiting function, which will not be listed here one by one, but they should all be understood to fall within the scope of protection of the present application.

[0156] Continuing with FIG11 , the first shaft 13011 further includes a first helical surface 130112, and the second shaft 13012 further includes a second helical surface 130122. The first helical surface 130112 and the second helical surface 130122 have the same rotational direction. The first rotating shaft assembly 1301 further includes an idler gear 13024. Referring to FIG10 and FIG11 , the idler gear 13024 is positioned between the first helical surface 130112 and the second helical surface 130122. The first helical surface 130112 meshes with the gear surface of the idler gear 13024, and the second helical surface 130122 meshes with the gear surface of the idler gear 13024. This allows for synchronous counter-rotation of the first shaft 13011 and the second shaft 13012, which helps improve the stability of the rotation of the first shaft 13011 and the second shaft 13012, thereby improving the relative rotational stability between the first support plate 1201 and the keyboard body 11.

[0157] Furthermore, in the present application, first helical surface 130112 is located on the side of connecting member 1312 facing first fixing frame 13013, and second helical surface 130122 is located on the side of connecting member 1312 facing second fixing frame 13014. Furthermore, the rotating shaft of idler gear 13024 can be mounted on connecting member 1312, which helps improve the structural reliability of first rotating shaft assembly 1301 and makes the structure of first rotating shaft assembly 1301 more compact, thereby facilitating a miniaturized design of first rotating shaft assembly 1301.

[0158] Continuing with Figures 10 and 11 , the first rotating shaft assembly 1301 may further include a first clip 13025 and a second clip 13026. These clips 13025 and 13026 may serve as exterior components of the first rotating shaft assembly 1301 and may be made of, but not limited to, rubber or plastic. These clips 13025 and 13026 may be snap-fitted to any axial position of the first shaft 13011 and the second shaft 13012 to enhance the appearance of the first rotating shaft assembly 1301. In this application, the first clip 13025 and the second clip 13026 may be a conjoined structure, meaning that the first clip 13025 can be snap-fitted to both the first shaft 13011 and the second shaft 13012, and the second clip 13026 can also be snap-fitted to both the first shaft 13011 and the second shaft 13012, thereby enhancing the aesthetics of the first rotating shaft assembly 1301. Of course, the first buckle piece 13025 and the second buckle piece 13026 may also be a split structure, which is conducive to improving the flexibility of setting the first buckle piece 13025 and the second buckle piece 13026.

[0159] Referring to Figure 13 , Figure 13 is a schematic diagram of the motion mechanism of the keyboard assembly 1000 using the first hinge assembly 1301 provided in the above-described embodiment of the present application. As can be seen from Figure 13 , the motion of the support assembly 12 of the keyboard assembly 1000 around the keyboard body 11 is equivalent to a five-bar transmission, wherein the first support plate 1201, the second support plate 1202, the third support plate 1203, the host 2000, the first hinge assembly 1301, and the keyboard body 11 can each be considered a single rod. The kinematic pairs between the first support plate 1201 and the first hinge assembly 1301, between the second support plate 1202 and the first support plate 1201, between the third support plate 1203 and the host 2000 as a whole and the second support plate 1202, and between the first hinge assembly 1301 and the keyboard body 11 are all low pairs. In other words, the five-bar transmission mechanism includes four low pairs. In addition, during the process of the support assembly 12 rotating around the keyboard body 11, the first axis 13011 and the second axis 13012 of the first rotating shaft assembly 1301 can rotate around their own axes while also rotating as a whole with the support assembly 12 around the keyboard body 11. The first rotating shaft assembly 1301 can be regarded as a high-pair moving part.

[0160] Then the degree of freedom of the five-bar transmission mechanism = 3×4-2×5-1=1. It can be understood from this that the degree of freedom of the five-bar transmission mechanism is unique, that is, the motion trajectory of each rod of the five-bar transmission mechanism is unique, so during the rotation of the support assembly 12 of the keyboard assembly 1000 around the keyboard body 11, the rotation trajectory of each support plate and the first rotating shaft assembly 1301 is unique. In this way, when the electronic device is in the open state, it can be beneficial to improve the coplanarity of the outer surface of the first support plate 1201 and the outer surface of the keyboard body 11, so as to improve the appearance flatness of the keyboard assembly 1000. In addition, when the keyboard assembly 1000 is in the closed state, there is no protruding structure on the side of the keyboard assembly 1000, so the appearance flatness of the keyboard assembly 1000 is higher. Therefore, the first rotating module 13 of the keyboard assembly 1000 provided in the present application adopts the first rotating shaft assembly 1301 provided in the above embodiment, which can help to improve the simplicity of the appearance of the keyboard assembly 1000.

[0161] Referring to Figure 14 , FIG14 is a schematic diagram illustrating another structure of the first rotating shaft assembly 1301 provided in an embodiment of the present application. The structure of the connecting member 1312 of the first rotating shaft assembly 1301 shown in FIG14 is slightly different from that of the connecting member 1312 of the first rotating shaft assembly 1301 shown in FIG11 . Specifically, referring to FIG15 , FIG15 is a schematic diagram illustrating another structure of the connecting member 1312 of the first rotating shaft assembly 1301 shown in FIG14 . The end of the connecting member 1312 facing the first stopper 1313 includes, in addition to a first stopper 13121, a fifth cam surface 13123. The surface of the raised portion of the fifth cam surface 13123 is connected to the first stopper 13121. Furthermore, the end of the connecting member 1312 facing the second stopper 1314 also includes a third stopper 13122 and a seventh cam surface 13124.

[0162] Correspondingly, the end of the first stopper 1313 facing the connecting member 1312 includes a second stopper 13131 and a sixth cam surface (not shown in FIG14 ), and the end of the second stopper 1314 facing the connecting member 1312 includes a fourth stopper 13141 and an eighth cam surface (not shown in FIG14 ). Thus, under the elastic force of the first elastic component 13018, the fifth cam surface 13123 abuts the sixth cam surface, and under the elastic force of the second elastic component 13019, the seventh cam surface 13124 abuts the eighth cam surface.

[0163] It can be understood that in the first rotating shaft assembly 1301 shown in Figure 14, structural parts such as the connected cam 13015, the first cam part 13016 and the second cam part 13017 can be omitted, which can help simplify the structure of the first rotating shaft assembly 1301 and reduce the weight of the first rotating shaft assembly 1301, thereby helping to achieve a lightweight and thin design of the keyboard assembly.

[0164] In addition, other structures of the first rotating shaft assembly 1301 shown in FIG. 14 may be configured with reference to any of the above embodiments, and will not be described in detail here.

[0165] In some application scenarios, such as when the center of gravity of the electronic device's main unit 2000 is stable, the main unit 2000 is lightweight, or the first support plate 1201 is sufficiently large, the triangular support structure formed between the keyboard assembly 1000 and the main unit 2000 can meet the requirements for stable support of the main unit 2000 when the electronic device is in the open state. In this case, the first hinge assembly 1301 may not be provided with structural members that generate a damping force, thereby further simplifying the structure of the first hinge assembly 1301. For example, referring to FIG16, FIG16 is a schematic diagram of another structure of the first hinge assembly 1301 provided in an embodiment of the present application. Compared to the first hinge assembly 1301 shown in FIG10, the first hinge assembly 1301 shown in FIG16 does not include structural members that generate a damping force, such as the conjoined cam 13015, the first cam member 13016, the second cam member 13017, the first elastic member 13018, and the second elastic member 13019, thereby simplifying the structure of the first hinge assembly 1301.

[0166] In addition, in FIG16 , first rotating shaft assembly 1301 further includes a connecting member 13027, which is sleeved on both first shaft 13011 and second shaft 13012. Specifically, connecting member 13027 includes a seventh shaft hole (not shown in FIG16 ) and an eighth shaft hole (not shown in FIG16 ). First shaft 13011 is inserted through the seventh shaft hole, and second shaft 13012 is inserted through the eighth shaft hole. Furthermore, connecting member 13027 is located between connecting member 1312 and first stopper 1313, and between connecting member 1312 and second stopper 1314. A fifth stopper 130271 is provided at the end of the connecting member 13027 facing the first stopper 1313, and a second stopper 13131 is provided at the end of the first stopper 1313 facing the connecting member 13027. A sixth stopper 130272 is provided at the end of the connecting member 13027 facing the second stopper 1314, and a fourth stopper 13141 is provided at the end of the second stopper 1314 facing the connecting member 13027. The fifth stopper 130271 can be configured similarly to the first stopper 13121, and the sixth stopper 130272 can be configured similarly to the third stopper 13122, and their detailed descriptions are omitted here.

[0167] In the first rotating shaft assembly 1301 shown in FIG16 , the connecting member 1312 is not provided with the first stop portion 13121 and the third stop portion 13122 , but other structures of the connecting member 1312 may be provided with reference to any of the above embodiments and will not be described in detail here.

[0168] 16 , in the first rotating shaft assembly 1301, the connector 13020 is located between the connector 1312 and the connector 13027, and a gasket 13023 is further provided between the connector 13020 and the connector 1312, and between the connector 13020 and the connector 13027. In some possible embodiments of the present application, the connector 13027 may be located between the connector 1312 and the connector 13020, and in this case, gaskets 13023 may be provided between the connector 1312 and the connector 13027, between the connector 13020 and the first stopper 1313 and the second stopper 1314, and between the connector 13020 and the first nut 13021 and the second nut 13022. Of course, in the first rotating shaft assembly 1301, while each structure can realize its function, its setting position can be adaptively adjusted. They are not listed one by one here, but they should all be understood to fall within the scope of protection of this application.

[0169] The other structures of the first rotating shaft assembly 1301 shown in Figure 16 can be configured with reference to any of the above-mentioned embodiments and will not be described in detail here. In addition, based on the structure of the first rotating shaft assembly 1301 shown in Figure 16, in some possible embodiments of the present application, the connecting member 1312 and the connecting member 13027 can also be integrated into an integral structure. In other words, the connecting member 1312 is still configured in the manner shown in Figure 11, while the connecting member 13027 is omitted, which is conducive to further simplifying the structure of the first rotating shaft assembly 1301.

[0170] Based on the above introduction to the design principle of the first rotating shaft assembly 1301 provided in the present application, a series of modifications can be made to the specific structure of the first rotating shaft assembly 1301 according to specific application scenarios. For example, referring to Figure 17, Figure 17 is another structural schematic diagram of the first rotating shaft assembly 1301 provided in an embodiment of the present application. The first rotating shaft assembly 1301 in Figure 17 is similar to the first rotating shaft assembly 1301 shown in Figure 14, except that the design of the connecting member 1312 of the first rotating shaft assembly 1301. Specifically, referring to Figure 18, Figure 18 is a schematic diagram of the assembly relationship between the connecting member 1312 of the first rotating shaft assembly 1301 shown in Figure 17 and the first stop member 1313 and the second stop member 1314. The fifth cam surface 13123 of the connecting member 1312 includes a fifth recessed portion 131231, a sixth recessed portion 131232, and a third protruding portion 131233. The third protruding portion 131233 is located between the fifth recessed portion 131231 and the sixth recessed portion 131232. The slope of the fifth inclined surface 131234 extending from the surface of the third protruding portion 131233 into the fifth recessed portion 131231 is smaller than the slope of the sixth inclined surface 131235 extending from the surface of the third protruding portion 131233 into the sixth recessed portion 131232. Furthermore, in the first rotating shaft assembly 1301 shown in FIG17 , the surface of the third protruding portion 131233 is an arcuate surface.

[0171] Since Figure 17 shows the structure of the first hinge assembly 1301 in the closed state of the keyboard assembly 1000, referring to Figure 18 , in this closed state, the raised portion of the sixth cam surface 13132 of the first stopper 1313 is located within the fifth recessed portion 131231. During the opening process of the keyboard assembly 1000, the first support plate 1201 and the keyboard body 11 rotate away from each other, and the raised portion of the sixth cam surface 13132 moves from the fifth recessed portion 131231 to the sixth recessed portion 131232. Specifically, the raised portion of the sixth cam surface 13132 first moves along the fifth inclined surface 131234 toward the third raised portion 131233. When the raised portion of the sixth cam surface 13132 moves to the surface of the third raised portion 131233, due to the damping force, even when no opening force is applied, the raised portion of the sixth cam surface 13132 can continue to move toward the sixth recessed portion 131232 under the action of the damping force. When the side surface of the first stop portion 13121 abuts the side surface of the second stop portion 13131, the raised portion of the sixth cam surface 13132 is located in the sixth recessed portion 131232. At this time, in the absence of external forces, the first support plate 1201 and the keyboard body 11 can be locked at this open angle, which effectively improves the support reliability of the keyboard assembly 1000. In this way, when the electronic device using the keyboard assembly 1000 is in the open state, even if the main body 2000 is heavy, the first support plate 1201 is small, or the main body 2000 of the electronic device is clicked, the electronic device can be stably maintained at this open angle, which effectively improves the user experience.

[0172] In this embodiment of the present application, the seventh cam surface 13124 of the connecting member 1312 can be configured similarly to the fifth cam surface 13123, and the second stopper 1314 can be configured similarly to the first stopper 1313. Simply put, the seventh cam surface 13124 includes a seventh recess, an eighth recess, and a fourth projection. The fourth projection is located between the seventh and eighth recesses, and the surface of the fourth projection is also curved. Furthermore, the slope of the seventh inclined surface extending from the surface of the fourth projection into the seventh recess is less than the slope of the eighth inclined surface extending from the surface of the seventh projection into the eighth recess. Thus, when the first support plate 1201 and the keyboard body 11 are closed, the projection of the eighth cam surface 13142 of the second stopper 1314 is located within the seventh recess. During the process of the first support plate 1201 and the keyboard body 11 rotating away from each other, the projection of the eighth cam surface 13142 moves from the seventh recess to the eighth recess. When the side surface of the third stopping portion 13122 abuts against the side surface of the fourth stopping portion 13141 , the protruding portion of the eighth cam surface 13142 is located at the eighth recessed portion.

[0173] Continuing with FIG. 17 , in the first rotating shaft assembly 1301, the first elastic component 13018 may be a spring to ensure that the raised portion of the sixth cam surface 13132 of the first stopper 1313 smoothly climbs along the fifth inclined surface 131234. Furthermore, the second elastic component 13019 may also be a spring to ensure that the raised portion of the eighth cam surface of the second stopper 1314 smoothly climbs along the seventh inclined surface.

[0174] In the first rotating shaft assembly 1301 shown in FIG17 , there may be two connecting members 13020, with the first elastic assembly 13018 located between the two connecting members 13020, and the second elastic assembly 13019 located between the two connecting members 13020. This can help improve the consistency of the elastic forces applied by the first elastic assembly 13018 and the second elastic assembly 13019 to the corresponding stop members, thereby improving the rotational stability of the first shaft 13011 and the second shaft 13012, and further improving the rotational stability of the first support plate 1201 relative to the keyboard body 11.

[0175] In addition, other structures of the first rotating shaft assembly 1301 shown in FIG17 may be configured with reference to any of the above embodiments, and will not be described in detail here.

[0176] FIG19 is another schematic diagram of the structure of the first rotating shaft assembly 1301 provided in an embodiment of the present application. The first rotating shaft assembly 1301 in FIG19 is similar to the first rotating shaft assembly 1301 shown in FIG10 , differing in the design of the integrated cam 13015 within the first rotating shaft assembly 1301. Specifically, FIG20 is a schematic diagram illustrating the assembly relationship between the integrated cam 13015, the first cam member 13016, and the second cam member 13017 of the first rotating shaft assembly 1301 shown in FIG19 . The first cam surface 130151 of the integrated cam 13015 includes a first recessed portion 1301511, a second recessed portion 1301512, and a first raised portion 1301513 located between the first recessed portion 1301511 and the second recessed portion 1301512. In the present application, the slope of the first inclined surface 1301514 extending from the surface of the first protrusion 1301513 into the first recess 1301511 is smaller than the slope of the second inclined surface 1301515 extending from the surface of the first protrusion 1301513 into the second recess 1301512. Furthermore, in the first rotating shaft assembly 1301 shown in FIG19 , the surface of the first protrusion 1301513 is an arcuate surface.

[0177] Since Figure 19 illustrates the structure of the first hinge assembly 1301 when the keyboard assembly 1000 is in the closed state, referring to Figure 20 , when the first support plate 1201 and the keyboard body 11 are in the closed state, the raised portion of the second cam surface 130161 of the first cam member 13016 is located within the first recessed portion 1301511. During the process of the first support plate 1201 and the keyboard body 11 rotating away from each other, the raised portion of the second cam surface 130161 of the first cam member 13016 moves from the first recessed portion 1301511 to the second recessed portion 1301512. Specifically, the raised portion of the second cam surface 130161 moves along the first inclined surface 1301514 toward the first raised portion 1301513. When the raised portion of second cam surface 130161 reaches the surface of first raised portion 1301513, due to the damping force, even when no opening force is applied, the raised portion of second cam surface 130161 can continue to move toward second recessed portion 1301512 under the action of the damping force. When the side surface of first stop portion 13121 abuts the side surface of second stop portion 13131, the raised portion of second cam surface 130161 is located in second recessed portion 1301512. At this point, in the absence of external forces, first support plate 1201 and keyboard body 11 can be locked at this open angle, effectively improving the support reliability of keyboard assembly 1000. Thus, when the electronic device incorporating keyboard assembly 1000 is in the open position for use, even if the main body 2000 is heavy, the first support plate 1201 is small, or the main body 2000 is subjected to a click operation, the electronic device can remain stably at this open angle, effectively improving the user experience.

[0178] In this embodiment of the present application, the third cam surface 130152 of the integrated cam 13015 can be configured similarly to the first cam surface 130151, and the second cam member 13017 can be configured similarly to the first cam member 13016. Briefly, the third cam surface 130152 includes a third recessed portion, a fourth recessed portion, and a second raised portion. The second raised portion is located between the third and fourth recessed portions, and the surface of the second raised portion is also an arcuate surface. Furthermore, the slope of the third inclined surface extending from the surface of the second raised portion into the third recessed portion is less than the slope of the fourth inclined surface extending from the surface of the second raised portion into the fourth recessed portion. Thus, when the first support plate 1201 and the keyboard body 11 are in the closed state, the raised portion of the fourth cam surface 130171 of the second cam member 13017 is located in the third recessed portion. Furthermore, during the process of the first support plate 1201 and the keyboard body 11 rotating away from each other, the raised portion of the fourth cam surface 130171 of the second cam member 13017 moves from the third recessed portion to the fourth recessed portion. When the side surface of the third stop portion 13122 abuts the side surface of the fourth stop portion, the raised portion of the fourth cam surface 130171 of the second cam member 13017 is located in the fourth recessed portion.

[0179] In the present application, when the keyboard assembly 1000 shown in FIG19 is used in a scenario where the stopping strength requirement for the stopper is low, such as in a lightweight electronic device such as a host 2000, the depth of the second recess 1301512 of the first cam surface 130151 of the integrated cam 13015 can be made smaller than the depth of the first recess 1301511, and the depth of the fourth recess of the third cam surface 130152 can be made smaller than the depth of the third recess. This can not only lock the rotational position of the first support plate 1201 and the keyboard body 11 in the open state, but also improve the smoothness of the relative rotation of the first support plate 1201 and the keyboard body 11.

[0180] In addition, other structures of the first rotating shaft assembly 1301 shown in FIG19 may be configured with reference to any of the above embodiments, and will not be described in detail here.

[0181] The above embodiments are only some exemplary descriptions of the setting methods of the first rotating shaft assembly 1301 with a dual-axis structure provided by this application. On this basis, adaptive deformation can also be made according to specific application scenarios. They are not listed one by one here, but they should all be understood to fall within the scope of protection of this application.

[0182] It is understood that in the above embodiment of the present application, in order to achieve the rotational connection between the first support plate 1201 and the keyboard body 11, the first rotating shaft assembly 1301 can be configured as a dual-axis structure or other possible structures. Next, some other possible configurations of the first rotating shaft assembly 1301 are introduced.

[0183] Referring to Figure 21, Figure 21 is another structural schematic diagram of the keyboard assembly 1000 provided in an embodiment of the present application. In this keyboard assembly, the first rotating shaft assembly 1301 of the first rotating module 13 is a single-axis structure, that is, the first rotating shaft assembly 1301 only includes one rotating shaft. Specifically, referring to Figure 22, Figure 22 is an AA cross-sectional view of the keyboard assembly 1000 shown in Figure 21. Among them, the first rotating shaft assembly 1301 includes a first rotating shaft 13028, the second plate edge 12012 of the first support plate 1201 is rotatably connected to the first rotating shaft 13028, and one end of the keyboard body 11 is rotatably connected to the first rotating shaft 13028. Therefore, the first support plate 1201 and the keyboard body 11 are both rotatably connected to the first rotating shaft 13028, which is conducive to simplifying the structure of the first rotating module 13, thereby facilitating the lightweight and thin design of the keyboard assembly 1000.

[0184] FIG23 is a schematic diagram of the motion mechanism of the keyboard assembly 1000 shown in FIG21 . As can be seen from FIG23 , the motion of the support assembly 12 of the keyboard assembly 1000 around the keyboard body 11 is equivalent to a four-bar transmission. The first support plate 1201, the second support plate 1202, the third support plate 1203, the host 2000, and the keyboard body 11 can each be considered a single rod. The kinematic pairs between the first support plate 1201 and the keyboard body 11, between the second support plate 1202 and the first support plate 1201, and between the third support plate 1203 and the host 2000 as a whole and the second support plate 1202 are all low pairs. Therefore, the four-bar transmission mechanism includes only four low pairs. Therefore, the degree of freedom of the four-bar transmission mechanism is 3×3-2×4=1. Therefore, it can be understood that the degree of freedom of the four-bar transmission mechanism is unique, that is, the motion trajectory of each rod of the four-bar transmission mechanism is unique. Therefore, during the rotation of the support assembly 12 of the keyboard assembly 1000 around the keyboard body 11, each support plate follows a unique rotation trajectory. In this way, when the keyboard assembly 1000 is in the open state, the coplanarity between the outer surface of the first support plate 1201 and the outer surface of the keyboard body 11 can be improved, thereby improving the appearance flatness of the keyboard assembly 1000. In addition, when the keyboard assembly 1000 is in the closed state, the first rotating module 13 of the keyboard assembly 1000 has a convex design, which helps to achieve a differentiated design for the appearance of the keyboard assembly 1000.

[0185] Referring to Figure 24, Figure 24 is another schematic diagram of the structure of the keyboard assembly 1000 provided in an embodiment of the present application. In this keyboard assembly 1000, the first rotating shaft assembly 1301 of the first rotating module 13 is also a single-axis structure. Unlike the keyboard assembly 1000 shown in Figure 21 above, in Figure 24, the first rotating module 13 adopts a sunken design. For details, please refer to Figure 25, which is an enlarged view of the partial structure of the keyboard assembly shown in Figure 24 at point B. Among them, the first rotating shaft assembly 1301 also includes a first rotating shaft 13028, and the first support plate 1201 and the keyboard body 11 are both rotatably connected to the first rotating shaft 13028 to achieve a rotational connection between the first support plate 1201 and the keyboard body 11.

[0186] Furthermore, when the keyboard assembly 1000 is in the closed state shown in FIG25 , the projection of the first support plate 1201 along the direction from the first support plate 1201 to the keyboard body 11 covers the projection of the first rotating module 13. Thus, when the keyboard assembly 1000 is in the closed state, the side edges of the keyboard assembly 1000 have no protruding structures, resulting in a more flat appearance.

[0187] It's worth noting, referring to both Figures 24 and 25 , that in this keyboard assembly 1000, to enhance the smoothness of the keyboard assembly 1000's appearance, the thickness of the end portion of the keyboard body 11 connected to the first rotating module 13 can be greater than or equal to the diameter of the first rotating shaft 13028. Consequently, the first pen slot 1104 can be provided solely on the keyboard body 11 to accommodate a stylus. This eliminates the need for a second pen slot 12013 on the first support plate 1201, simplifying the manufacturing process of the keyboard assembly 1000.

[0188] Referring to Figure 26, Figure 26 is another structural schematic diagram of the keyboard assembly 1000 provided in an embodiment of the present application. The first rotating module 13 of the keyboard assembly 1000 is a flexible material layer. Specifically, referring to Figure 27, Figure 27 is an enlarged view of the local structure of the keyboard assembly at C shown in Figure 26. The flexible material layer is connected to the first support plate 1201, and the flexible material layer is connected to one end of the keyboard body 11. The material of the flexible material layer can be, but is not limited to, leather. As long as the first support plate 1201 can be reliably connected to the keyboard body 11, the first support plate 1201 can also be rotated relative to the keyboard body 11. The first rotating module 13 of the keyboard assembly 1000 adopts the above-mentioned setting method, which can effectively simplify the structure of the keyboard assembly 1000, which is conducive to achieving a lightweight and thin design of the keyboard assembly 1000.

[0189] The above embodiments are only some exemplary descriptions of the setting methods of the first rotating module 13 provided in this application. On this basis, adaptive deformation can be made according to specific application scenarios. They are not listed one by one here, but they should all be understood to fall within the scope of protection of this application.

[0190] From the above introduction to the keyboard assembly 1000 provided in this application, it can be known that the first support plate 1201 and the second support plate 1202 of the support assembly 12 are also rotatably connected. In this application, the specific connection method of the first support plate 1201 and the second support plate 1202 is not limited. For example, a flexible material can be used for flexible connection, or a rigid connector can be used for rigid connection. Among them, when the first support plate 1201 and the second support plate 1202 are connected by a flexible material layer, the material of the flexible material layer can be, but is not limited to, leather. The flexible material layer is connected to the first plate edge 12011 of the first support plate 1201, and the flexible material layer is connected to the third plate edge 12021 of the second support plate 1202. In addition, when the first support plate 1201 and the keyboard body 11 are also connected by a flexible material layer, the keyboard body 11, the first support plate 1201 and the second support plate 1202 can be connected by the same flexible material layer, which can improve the connection reliability of each structure while also helping to simplify the structure of the keyboard assembly 1000.

[0191] It is worth mentioning that, in actual applications, each support plate can also be wrapped with a flexible material layer, for example, with leather, to form a flexible material appearance. Referring to Figure 28a, Figure 28a is an appearance effect diagram of a keyboard assembly formed using a traditional process. In addition, referring to Figure 28b, Figure 28b is an enlarged view of the local structure at G of the keyboard assembly shown in Figure 28a. As shown in Figure 28b, in the traditional process, taking the first support plate 1201 as an example, the first flexible material layer 271 and the second flexible material layer 272 attached to the two opposite sides of the first support plate 1201 are pressed together outside the edge of the first support plate 1201 and then cut, and then an oil edge process is used to form an oil edge material layer 28 on the edge of the first flexible material layer 271 and the second flexible material layer 272 that are attached to each other, so as to achieve the protection of the edges of the two flexible material layers while wrapping the first support plate 1201. However, as shown in FIG28b , using this traditional process, a pressed edge will be left on the peripheral side of the first support plate 1201 wrapped by the flexible material layer, and an appearance ridge 29 will exist on the edge of the keyboard assembly 1000, which has a great impact on the appearance of the keyboard assembly 1000.

[0192] In order to solve the above problems, the present application optimizes the lamination process for the flexible material layer. Specifically, referring to Figure 29a, Figure 29a is an appearance rendering of the keyboard assembly provided in an embodiment of the present application. In addition, referring to Figure 29b, Figure 29b is an enlarged view of the local structure at H of the structure shown in Figure 29a. In this embodiment of the present application, still taking the first support plate 1201 as an example, the first support plate 1201 includes a first surface 12014 and a second surface 12015. The first surface 12014 is away from the keyboard body 11 relative to the second surface 12015, or in other words, the first surface 12014 is located on the outside of the second surface 12015.

[0193] Continuing with Figure 29b, in this embodiment, the first surface 12014 includes an inclined surface 120141 extending toward the edge of the second surface 12015. This means that the thickness of the first support plate 1201 is relatively small at the edge, thereby creating a curved edge effect. Furthermore, the keyboard assembly 1000 also includes a first flexible material layer 271 and a second flexible material layer 272. The first flexible material layer 271 is attached to the first surface 12014, and the second flexible material layer 272 is attached to the second surface 12015. The first flexible material layer 271, the first surface 12014, the second flexible material layer 272, and the second surface 12015 are aligned at the edge of the first support plate 1201.

[0194] It can be understood that in this embodiment of the present application, by providing the inclined surface 120141 on the portion close to the edge of the first surface 12014 , it is helpful to improve the reliability of the fitting between the first flexible material layer 271 and the first surface 12014 .

[0195] In addition, in the embodiment shown in FIG. 29 b , the keyboard assembly 1000 further includes an oil-edge material layer 28 for covering the first flexible material layer 271 , the second flexible material layer 272 and the edge of the first support plate 1201 , so as to protect the edge of the first support plate 1201 .

[0196] By comparing Figure 29b and Figure 28b, it can be seen that the flexible material layer wrapping method of the keyboard assembly provided in this application can avoid the generation of ridges in the appearance, so that the keyboard assembly 1000 can have a smoother, simpler and integrated appearance surface, thereby improving the appearance of the keyboard assembly 1000.

[0197] It is worth mentioning that during actual processing, the first support plate 1201 can be cut first, as shown in Figure 29c, to form an extension surface 120141 on the first surface 12014 extending toward the edge direction of the second surface 12015, thereby thinning the edge thickness of the first support plate 1201.

[0198] Next, referring to FIG. 29d , which is a schematic diagram illustrating an intermediate step in the lamination process of the flexible material layers according to an embodiment of the present application, the first flexible material layer 271 is attached to the first surface 12014, and the second flexible material layer 272 is attached to the second surface 12015. This ensures reliable lamination of the two flexible material layers to the surface of the first support plate 1201.

[0199] Subsequently, based on the structure shown in FIG29d, the first flexible material layer 271, the first support plate 1201, and the second flexible material layer 272 can be cut along the cutting line through a single cutting process to obtain the structure shown in FIG29e. It can be understood that since the edge of the first support plate 1201 has been thinned before cutting, the reliability requirements of the cutting tool are relatively low, thereby facilitating the cutting process.

[0200] Finally, the edges of the first flexible material layer 271, the first support plate 1201 and the second flexible material layer 272 are treated with oil edges to form an oil edge material layer 28 that can protect the edges of the first flexible material layer 271, the first support plate 1201 and the second flexible material layer 272, thereby obtaining the structure shown in Figure 29b.

[0201] Therefore, the attachment process of the flexible material layer provided in the embodiment of the present application is feasible and can make the processed keyboard assembly have a simple appearance.

[0202] In the above embodiments, the attachment process for the flexible material layer provided in this application is described using the first support plate 1201 as an example. However, in actual applications, the entire support assembly 12 may be wrapped in the flexible material layer, with the first flexible material layer 271 attached to the first attachment surface of the support assembly 12, and the second flexible material layer 272 attached to the second attachment surface of the support assembly. The first attachment surface and the second attachment surface are disposed opposite each other, and the first attachment surface faces away from the keyboard body 11 relative to the second attachment surface. The attachment process for the flexible material layer of the entire support assembly 12 is similar to the attachment process for the flexible material layer of the first support plate 1201 described above, and will not be further described here.

[0203] It is worth mentioning that the configuration of the flexible material layer of the support assembly 12 provided in this application can be based on the specific structure of the keyboard assembly 1000 provided in any of the above embodiments, or it can be independent of the specific structure of the keyboard assembly 1000. In other words, the attachment process of the flexible material layer can be used in any scenario requiring a flexible material layer wrapping, and its applicability is relatively wide.

[0204] In one possible embodiment, when the first support plate 1201 is rigidly connected to the second support plate 1202, the keyboard assembly 1000 may further include a second rotating module 14. In a specific implementation, refer to Figure 30, which is a structural schematic diagram of the second rotating module 14 provided in an embodiment of the present application. The second rotating module 14 includes a second rotating shaft 1401 and a second rotating shaft assembly 1402. Refer to Figure 31a, which is a structural schematic diagram of the second rotating shaft assembly provided in an embodiment of the present application. The second rotating shaft assembly 1402 includes a first rotating bracket 14021 and a second rotating bracket 14022. The first rotating bracket 14021 is rotatably connected to the second rotating shaft 1401 shown in Figure 30, and the first rotating bracket 14021 is fixedly connected to the first plate edge 12011 of the first support plate 1201 as shown in Figure 4. The fixed connection method can be, but is not limited to, threaded connection or riveting. The second rotating bracket 14022 is rotatably connected to the second rotating shaft 1401 shown in FIG30 , and the second rotating bracket 14022 is fixedly connected to the third plate edge 12021 of the second support plate 1202 shown in FIG4 . The fixed connection method may be, but is not limited to, threaded connection or riveting. In this way, the first support plate 1201 and the second support plate 1202 are rotatably connected through the rotational connection between the first rotating bracket 14021 and the second rotating bracket 14022 and the second rotating shaft 1401 to achieve the rotational connection.

[0205] It can be understood that in order to improve the stability of the rotational connection between the first support plate 1201 and the second support plate 1202 through the second rotation module 14, in the present application, the second rotation module 14 can include multiple second rotation shaft assemblies 1402. For example, in Figure 30, the second rotation module 14 includes four second rotation shaft assemblies 1402, and each second rotation shaft assembly 1402 can be set with reference to Figure 31a. Then, the first support plate 1201 and the second support plate 1202 can be rotationally connected to the second rotation shaft 1401 through the multiple second rotation shaft assemblies 1402.

[0206] In the present application, in order to prevent the first support plate 1201 and the second support plate 1202 from being bent or over-bent during rotation, the first rotating bracket 14021 and the second rotating bracket 14022 are both provided with a stop structure. In a specific implementation, refer to Figure 31b, which is a structural schematic diagram of the first rotating bracket 14021 provided in an embodiment of the present application. The first rotating bracket 14021 includes a first connecting plate 140211 and a first connecting arm 140212. The first connecting plate 140211 is used to be fixedly connected to the first support plate 1201. The first connecting arm 140212 is provided at the end of the first connecting plate 140211. The first connecting arm 140212 is used to be rotatably connected to the second rotating shaft 1401.

[0207] Continuing with reference to FIG31b , the first connecting arm 140212 includes a first connecting portion 1402121 and a first arcuate rotating portion 1402122. The first connecting portion 1402121 is sleeved on the second rotating shaft 1401. Specifically, FIG32a is a DD cross-sectional view of the second rotating shaft assembly shown in FIG31a , which can be used to illustrate the structure of the first connecting portion 1402121. The first connecting portion 1402121 includes a shaft hole 14021211, and the second rotating shaft 1401 can be inserted into the shaft hole 14021211 of the first connecting portion 1402121 to achieve rotational connection between the first rotating bracket 14021 and the second rotating shaft 1401. 30 and 31 b , the first connecting portion 1402121 and the first arcuate rotating portion 1402122 are arranged along the axial direction of the second rotating shaft 1401, and the first connecting portion 1402121 is connected to the first arcuate rotating portion 1402122. It is understood that the first rotating bracket 14021 may include a plurality of first connecting arms 140212 spaced apart along the axial direction of the second rotating shaft 1401 to enhance the stability of the rotational connection between the first rotating bracket 14021 and the second rotating shaft 1401.

[0208] The structure of the second rotating bracket 14022 can be configured with reference to the first rotating bracket 14021. Briefly, referring to Figure 32b, which is a cross-sectional view taken along line EE of the second rotating shaft assembly shown in Figure 31a, the second rotating bracket 14022 includes a second connecting plate 140221 and a second connecting arm 140222. The second connecting plate 140221 is configured to be fixedly connected to the second support plate 1202. The second connecting arm 140222 is disposed at the end of the second connecting plate 140221 and includes a second connecting portion 1402221 and a second arcuate rotating portion 1402222. The second rotating shaft 1401 can be inserted into the axial hole of the second connecting portion 1402221, so that the second connecting portion 1402221 is sleeved on the second rotating shaft 1401. Furthermore, the second connecting portion 1402221 and the second arcuate rotating portion 1402222 are arranged along the axial direction of the second rotating shaft 1401, and the second connecting portion 1402221 is connected to the second arcuate rotating portion 1402222. The second rotating bracket 14022 may also include a plurality of second connecting arms 140222 spaced apart along the axial direction of the second rotating shaft 1401 to enhance the stability of the rotational connection between the second rotating bracket 14022 and the second rotating shaft 1401.

[0209] Figure 32a illustrates the relative positions of the first arcuate rotating portion 1402122 and the second arcuate rotating portion 140222 when the keyboard assembly is in the open state. As shown in Figure 32a , in the second rotating shaft assembly 1402, along the axial direction of the second rotating shaft 1401, the first connecting arms 140212 of the first rotating bracket 14021 and the second connecting arms 140222 of the second rotating bracket 14022 are alternately arranged. Furthermore, along the rotational directions of the first and second rotating brackets 14021, 14022, the side surfaces of the first arcuate rotating portion 1402122 of the first connecting arm 140212 and the side surfaces of the second arcuate rotating portion 1402222 of the second connecting arm 140222 are arranged opposite each other. Thus, when the first rotating bracket 14021 and the second rotating bracket 14022 rotate to a set angle about the second rotating axis 1401, for example, when the keyboard assembly is in the open state, as shown in FIG. 32c ( FIG. 32c is a view of the structure shown in FIG. 32a , as viewed along the F axis), one side surface of the first arcuate rotating portion 1402122 of the first connecting arm 140212 abuts one side surface of the second arcuate rotating portion 1402222 of the second connecting arm 140222. Furthermore, when the keyboard assembly is in the closed state, the other side surface of the first arcuate rotating portion 1402122 of the first connecting arm 140212 abuts the other side surface of the second arcuate rotating portion 1402222 of the second connecting arm 140222. This effectively limits the rotational position of the first rotating bracket 14021 and the second rotating bracket 14022, thereby limiting the rotational angle between the first support plate 1201 and the second support plate 1202.

[0210] It is understandable that the curvature of the first arc-shaped rotating portion 1402122 and the curvature of the second arc-shaped rotating portion 1402222 can be specifically set according to the set angles of rotation of the first rotating bracket 14021 and the second rotating bracket 14022 around the second rotating shaft 1401 .

[0211] The above is merely an exemplary description of the specific configuration of the second rotating shaft assembly 1402 of the second rotating module 14 provided in the embodiment of the present application. In other possible embodiments of the present application, the second rotating shaft assembly 1402 may also be configured in other possible configurations. For example, reference may be made to FIG. 33 , which is a cross-sectional view of another assembly structure of the first rotating bracket 14021 and the second rotating bracket 14022 provided in the embodiment of the present application. In Figure 33, the first connecting arm 140212 of the first rotating bracket 14021 is an arc-shaped rotating block, and the second connecting arm 140222 of the second rotating bracket 14022 is also an arc-shaped rotating block. Along the axial direction of the second rotating shaft 1401, the first connecting arm 140212 and the second connecting arm 140222 are arranged in a one-to-one correspondence, and along the rotation direction of the first rotating bracket 14021 and the second rotating bracket 14022, the side surface of the first connecting arm 140212 and the side surface of the second connecting arm 140222 are arranged opposite to each other, so that when the first rotating bracket 14021 and the second rotating bracket 14022 rotate to a set angle around the second rotating shaft 1401, the side surface of the first connecting arm 140212 and the side surface of the second connecting arm 140222 abut against each other to achieve the restriction of the rotation position of the first rotating bracket 14021 and the second rotating bracket 14022, thereby achieving the restriction of the rotation angle between the first support plate 1201 and the second support plate 1202. Various possible configurations of the second rotating shaft assembly 1402 are not listed here one by one, but they should all be understood to fall within the scope of protection of this application.

[0212] In the present application, the first support plate 1201 and the second support plate 1202 are connected by the above-mentioned rigid connecting parts, which can effectively reduce the occurrence of dead bends or over-bending between the first support plate 1201 and the second support plate 1202 during the rotation of the first support plate 1201 and the second support plate 1202, and can effectively improve the smoothness of the movement of the support assembly 12 to enhance the user experience.

[0213] Since the second support plate 1202 and the third support plate 1203 are also rotatably connected, in this application, the rotating connection between the second support plate 1202 and the third support plate 1203 can be set with reference to the second rotating module 14 between the first support plate 1201 and the second support plate 1202 mentioned above, and will not be described in detail here.

[0214] From the above introduction to the support assembly 12 of the keyboard assembly 1000, it can be known that the third support plate 1203 is used to connect with the host 2000 so that the third support plate 1203 and the host 2000 move as a whole, and when the electronic device is in the open state, the host 2000 and the third support plate 1203, the second support plate 1202, the first support plate 1201 and the keyboard body 11 form an approximately triangular support structure, so that the electronic device can be stably maintained in the open state.

[0215] In some possible embodiments, the structure of the keyboard assembly 1000 can be adaptively deformed so that the keyboard assembly 1000 itself can also form an approximately triangular support structure. In this way, even if there is no connection structure between the host 2000 and the keyboard body 11, the keyboard assembly 1000 can still provide stable support for the host 2000, which is conducive to expanding the scope of application scenarios of the keyboard assembly 1000. In a specific implementation, please refer to Figure 34, which is another structural schematic diagram of the keyboard assembly 1000 provided in an embodiment of the present application. In this keyboard assembly 1000, the fourth plate edge 12022 of the second support plate 1202 is rotatably connected to the plate surface of the third support plate 1203. In addition, when the keyboard assembly 1000 is in the open state, the fifth plate edge 12031 of the third support plate 1203 abuts against the keyboard body 11, so that the third support plate 1203, the second support plate 1202, the first support plate 1201 and the keyboard body 11 can form an approximately triangular support structure.

[0216] It is worth mentioning that in the present application, the specific connection method between the fifth plate edge 12031 of the third support plate 1203 and the keyboard body 11 is not limited. For example, the third support plate 1203 and the keyboard body 11 can also be connected by magnetic attraction. The specific setting method can refer to the magnetic attraction method between the above-mentioned host 2000 and the keyboard body 11, which will not be described in detail here. Alternatively, in some possible embodiments, the third support plate 1203 and the keyboard body 11 can be connected by snapping. For example, the keyboard body 11 may include a plurality of protrusions (at the position in Figure 34) arranged in sequence along the first support plate 1201 away from the support assembly 12. In this way, the third support plate 1203 can be snapped with the protrusions at different positions to achieve multi-angle adjustment of the open state of the keyboard assembly 1000.

[0217] When the keyboard assembly 1000 shown in FIG34 is used in an electronic device, the third support plate 1203 can also be detachably connected to the host 2000. The specific configuration method can refer to any of the above embodiments and will not be described in detail here. In addition, since the keyboard assembly 1000 shown in FIG34 can form a stable approximately triangular support structure, the host 2000 and the keyboard body 11 of the electronic device using the keyboard assembly 1000 can be provided with a connection structure or without a connection structure, so the keyboard assembly 1000 has a wide range of applicable scenarios.

[0218] In addition, in some application scenarios, the host 2000 of the electronic device may be independently provided with a support structure, wherein the support structure may be provided in a variety of ways. For example, the support structure may be a part of the host 2000, and the host may include a support arm 26, which is rotatably connected to the back cover 23 of the host 2000. Alternatively, the support structure may be a protective shell, and the support structure may include a shell and a support arm 26, the shell being mounted on the host 2000, and the support arm 26 being rotatably connected to the outer surface of the shell, thereby achieving a rotatable connection between the support arm 26 and the back cover 23 of the host 2000.

[0219] Therefore, it can be understood that when the host 2000 is provided with a separate support structure, the keyboard assembly 1000 can omit the third support plate 1203, as shown in Figure 35a, which is another structural schematic diagram of the keyboard assembly 1000 provided in an embodiment of the present application. Since the keyboard assembly 1000 does not have the third support plate 1203, the structure of the keyboard assembly 1000 is simplified and the weight of the keyboard assembly 1000 is reduced.

[0220] In addition, when the keyboard assembly 1000 shown in FIG35a is used in an electronic device, reference may be made to FIG35b, which is a schematic structural diagram of an electronic device in which the keyboard assembly 1000 shown in FIG35a is applied. The second support plate 1202 of the support assembly 12 of the keyboard assembly 1000 can be connected to the support arm 26 of the host 2000. The connection between the second support plate 1202 and the support arm 26 can be magnetic, plug-in, or any other possible detachable method.

[0221] It is worth mentioning that in this application, when the support arm 26 is part of the host 2000, the host 2000 and the keyboard assembly 1000 can also achieve electrical signal transmission through the connection between the second support plate 1202 and the support arm 26. In specific implementations, the second support plate 1202 is electrically connected to the keyboard body 11. In addition, the second support plate 1202 and the support arm 26 can be electrically connected through, but not limited to, a wireless charging coil or a connector plug. Since the technology for achieving electrical connection between two structural components is relatively mature, it will not be described in detail here.

[0222] It will be appreciated that when the host 2000 is provided with a separate support structure, the second support plate 1202 only needs to be able to reliably connect to the support arm 26. Based on this, the size of the second support plate 1202 of the keyboard assembly 1000 can be set smaller. For example, in the keyboard assembly shown in Figure 36, the second support plate 1202 is configured as a first connector. Furthermore, referring to Figure 37, Figure 37 is a schematic diagram of the connection between the second support plate 1202 and the support arm 26 of the keyboard assembly shown in Figure 36. If the support arm 26 of the host 2000 includes a second connector, the second support plate 1202 and the support arm 26 can be removably connected by plugging the first connector into the second connector, while also achieving electrical connection between the second support plate 1202 and the support arm 26. This ensures that the connection requirements between the second support plate 1202 and the support arm 26 of the host 2000 are met while also reducing the weight of the keyboard assembly 1000.

[0223] In addition, the second support plate 1202 of the keyboard assembly 1000 shown in Figure 36 and the support arm 26 of the host 2000 can also be connected by magnetism; or there is both plug-in force and magnetic force between the second support plate 1202 and the support arm 26 to improve the reliability of the connection between the second support plate 1202 and the support arm 26.

[0224] The keyboard assembly 1000 provided in this embodiment utilizes a multi-rod transmission principle to ensure smooth opening of the electronic device while providing reliable support for the electronic device's main body. The keyboard assembly 1000 has a relatively simple structure, which facilitates a miniaturized design, thereby meeting the design requirements of electronic devices for thinness and miniaturization, satisfying user portability requirements, and enhancing the user experience.

[0225] In actual applications, both the host 2000 and the keyboard assembly 1000 need to be powered by a power source. The host 2000 may use a battery as its power source. The battery can be used to store electrical energy provided by an external power source and provide the electrical energy to the host 2000. The keyboard assembly 1000 can usually be directly connected to an external power source via a power interface (such as a Type-C port) to be powered by the external power source.

[0226] In conventional designs, the power interface of the keyboard assembly 1000 is typically located on the keyboard body 11 or the first rotating module 13, while the charging control circuit board, which receives external power through the power interface, is located on the keyboard body 11. This increases the thickness of the keyboard body 11 or the first rotating module 13, hindering the thinness of the keyboard assembly 1000. Furthermore, in some current solutions, it is desirable to utilize the power interface of the keyboard assembly 1000 to power the battery of the host 2000. Therefore, the wiring connecting the charging control circuit board to the battery of the host 2000 must pass through the first rotating module 13. Limited by the size of the first rotating module 13, this wiring can only support the flow of a relatively small current, which affects the charging speed.

[0227] To solve the above problem, refer to Figure 38, which is an exploded view of another structure of a keyboard assembly provided in an embodiment of the present application. In this embodiment, the keyboard assembly 1000 also includes a charging control circuit board 12016, a connector 12017 and a main circuit board 1105. The charging control circuit board 12016 and the connector 12017 are arranged on the support assembly 12, and the main circuit board 1105 is arranged on the keyboard body 11, wherein the charging control circuit board 12016 is electrically connected to receive an external power supply. Specifically, the charging control circuit board 12016 can be electrically connected to a power interface 12018 provided on the first support plate 1201 to receive an external power supply through the power interface 12018. This application does not limit the specific setting form of the power interface 12018. It can be exemplarily a Type-C interface or other possible forms of interface, which is not limited here. In an embodiment of the present application, the charging control circuit board 12016 can also be set on the first support plate 1201 so that the distance between the charging control circuit board 12016 and the power interface 12018 and the main circuit board 1105 is shorter, thereby facilitating the electrical connection between the charging control circuit board 12016 and the power interface 12018 and the main circuit board 1105.

[0228] As shown in FIG38 , in this application, the charging control circuit board 12016 and the main circuit board 1105 can be electrically connected via a cable 3. It will be appreciated that since the charging control circuit board 12016 is disposed on the first support plate 1201 and the main circuit board 1105 is disposed on the keyboard body 11, a portion of the cable 3 passes through the first rotating module 13, specifically, the main shaft 1302 of the first rotating module 13. This allows the charging control circuit board 12016 to be used to supply power to the main circuit board 1105.

[0229] By adopting the design scheme provided in this application, by setting the charging control circuit board 12016 on the first support plate 1201 and setting the main circuit board 1105 on the keyboard body 11, it is beneficial to improve the space utilization of the keyboard assembly 1000, thereby helping to reduce the thickness of the keyboard body 11 to achieve a thin design of the keyboard assembly 1000.

[0230] Continuing with FIG. 38 , in this embodiment, the charging control circuit board 12016 is further configured to supply power to the host's battery via a connector 12017. Connector 12017 may be disposed, for example, on the first support plate 1201, the second support plate 1202, or the third support plate 1203. The connector 12017 may be specifically positioned based on its relative position to the host's charging port to facilitate electrical connection between the connector 12017 and the host. Furthermore, in this application, the charging control circuit board 12016 and the connector 12017 may be electrically connected via a flexible circuit board 12019. This facilitates the flow of high current between the charging control circuit board 12016 and the connector 12017, thereby increasing the speed at which the host's battery is charged using the charging control circuit board 12016.

[0231] Based on the above description of the structural design in which the charging control circuit board 12016 is arranged on the first support plate 1201 and the main circuit board 1105 is arranged on the keyboard body 11, it can be seen that in this application, the power supply system of the keyboard assembly 1000 also adopts a distributed design scheme. In specific implementation, refer to Figure 39, which is a schematic diagram of a topological structure of the power supply system of the electronic device provided in an embodiment of the present application. Figure 39 shows the charging circuit of the host 2000 and the power supply circuit of the keyboard assembly 1000, wherein the charging circuit of the host 2000 may include, for example, the host's auxiliary processor 210, battery 211 and power manager 212. The power supply circuit of the keyboard assembly 1000 may include two parts, one part is the power supply circuit arranged on the charging control circuit board 12016, and the other part is the power supply circuit arranged on the main circuit board 1105, that is, the power supply circuit of the keyboard assembly 1000 is distributed between the first support plate 1201 and the keyboard body 11.

[0232] As shown in FIG39 , the charge control circuit board 12016 includes a charge controller 120161, and the main circuit board 1105 includes a mainboard processor 11051. The charge controller 120161 is configured to transmit an external power signal received by the power interface 12018 to the mainboard processor 11051. The host's auxiliary processor 210 is configured to monitor the charge level of the host's battery 211 and notify the mainboard processor 11051 of the monitoring results. When the mainboard processor 11051 learns from the host's auxiliary processor 210 that the battery 211 is not fully charged, it controls the charge control circuit board 12016 to transmit an electrical signal to the power manager 212 via the overvoltage protection load switch 120162. The power manager 212 then transmits the electrical signal to the battery 211 according to the configured charging strategy, thereby charging the battery 211.

[0233] It is worth mentioning that in the present application, the non-fully charged state for starting to charge the battery 211 can be set according to the actual power demand of the host 2000 and the power storage capacity of the battery 211. For example, the battery 211 can be set to be charged when the power stored in the battery 211 is less than 20% of its fully charged state.

[0234] In the present application, by adopting a distributed layout for the power supply circuit of the keyboard assembly 1000, the charging rate of the battery 211 of the host 2000 can be ensured while also helping to improve the internal space utilization of the keyboard assembly 1000, which is beneficial to improving the sophistication of the keyboard assembly 1000.

[0235] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A keyboard assembly, comprising a keyboard body, wherein the keyboard body comprises a plurality of keys, characterized in that: The keyboard assembly further comprises a first support plate, a second support plate and a third support plate, wherein: The first support plate includes a first plate edge and a second plate edge arranged opposite to each other, and the second support plate includes a third plate edge and a fourth plate edge arranged opposite to each other; the first plate edge is rotatably connected to the third plate edge, the second plate edge is rotatably connected to one end of the keyboard body, and the fourth plate edge is rotatably connected to the third support plate.

2. The keyboard assembly according to claim 1, wherein: The keyboard assembly also includes a first rotating module, the first rotating module includes a first rotating shaft assembly, the first rotating shaft assembly includes a first shaft and a second shaft, the axis of the first shaft and the axis of the second shaft are parallel and do not overlap, the first shaft is fixedly connected to the second plate edge of the first support plate, and the second shaft is fixedly connected to one end of the keyboard body.

3. The keyboard assembly according to claim 2, wherein: The first rotating shaft assembly also includes a first fixing frame and a second fixing frame, the first fixing frame is arranged at the end of the first shaft, and the first fixing frame is used to drive the first shaft to rotate synchronously; the second fixing frame is arranged at the end of the second shaft, and the second fixing frame is used to drive the second shaft to rotate synchronously; the first fixing frame is fixedly connected to the second plate edge of the first support plate, and the second fixing frame is fixedly connected to one end of the keyboard body.

4. The keyboard assembly according to claim 2 or 3, wherein: The first rotating shaft assembly further includes a connecting member, a first stop member, and a second stop member, wherein the connecting member is sleeved on the first shaft and the second shaft, the first stop member is sleeved on the first shaft, and the second stop member is sleeved on the second shaft; in the rotation direction of the first shaft, the relative position of the first stop member and the first shaft is fixed; in the rotation direction of the second shaft, the relative position of the second stop member and the second shaft is fixed; When the first stopper abuts against the connecting member, and the second stopper abuts against the connecting member, the first supporting plate stops rotating toward the side away from the keyboard body.

5. The keyboard assembly according to claim 4, wherein: The end of the connecting member facing the first stopper includes a first stopper, and the end of the first stopper facing the connecting member includes a second stopper, and in the rotation direction of the first shaft, a side surface of the first stopper is arranged opposite to a side surface of the second stopper; The end of the connecting member facing the second stop member includes a third stop portion, and the end of the second stop member facing the connecting member includes a fourth stop portion. In the rotation direction of the second axis, the side surface of the third stop portion is arranged opposite to the side surface of the fourth stop portion; when the side surface of the first stop portion abuts against the side surface of the second stop portion, and the side surface of the third stop portion abuts against the side surface of the fourth stop portion, the first support plate stops rotating toward the side away from the keyboard body.

6. The keyboard assembly according to claim 4 or 5, wherein: The first rotating shaft assembly further includes a conjoined cam, a first cam member, and a second cam member, wherein the conjoined cam is sleeved on the first shaft and the second shaft, the first cam member is sleeved on the first shaft, and the second cam member is sleeved on the second shaft, the conjoined cam is located between the first stop member and the first cam member, and the conjoined cam is located between the second stop member and the second cam member; The end surface of the connected cam facing the first cam component includes a first cam surface, the end surface of the first cam component facing the connected cam includes a second cam surface, and the first cam surface abuts the second cam surface; the end surface of the connected cam facing the second cam component includes a third cam surface, the end surface of the second cam component facing the connected cam includes a fourth cam surface, and the third cam surface abuts the fourth cam surface.

7. The keyboard assembly according to claim 6, wherein: When the first stopper abuts the connecting member, the raised portion of the first cam surface abuts the raised portion of the second cam surface; and when the second stopper abuts the connecting member, the raised portion of the third cam surface abuts the raised portion of the fourth cam surface.

8. The keyboard assembly according to claim 6, wherein: The first cam surface includes a first recessed portion, a second recessed portion, and a first raised portion. The recessed depth of the second recessed portion is smaller than that of the first recessed portion. The first raised portion is located between the first recessed portion and the second recessed portion. The surface of the first raised portion is an arcuate surface. The slope of a first inclined surface extending from the surface of the first raised portion into the first recessed portion is smaller than the slope of a second inclined surface extending from the surface of the first raised portion into the second recessed portion. When the keyboard assembly is in a closed state, the raised portion of the second cam surface of the first cam member is located in the first recessed portion. When the connecting member abuts against the first stopper, the raised portion of the second cam surface of the first cam member is located in the second recessed portion. The third cam surface includes a third recessed portion, a fourth recessed portion and a second raised portion, the recessed depth of the fourth recessed portion is smaller than the recessed depth of the third recessed portion, the second raised portion is located between the third recessed portion and the fourth recessed portion, the surface of the second raised portion is an arcuate surface, and the slope of the third inclined surface extending from the surface of the second raised portion to the third recessed portion is smaller than the slope of the fourth inclined surface extending from the surface of the second raised portion to the fourth recessed portion; when the keyboard assembly is in a closed state, the raised portion of the fourth cam surface of the second cam member is located in the third recessed portion; and when the connecting member abuts against the second stop member, the raised portion of the fourth cam surface of the second cam member is located in the fourth recessed portion.

9. The keyboard assembly according to claim 4 or 5, wherein: The end of the connecting member facing the first stopper further includes a fifth cam surface, and the end of the first stopper facing the connecting member further includes a sixth cam surface, and the fifth cam surface abuts against the sixth cam surface; The end of the connecting member facing the second stopper further includes a seventh cam surface, and the end of the second stopper facing the connecting member further includes an eighth cam surface, and the seventh cam surface abuts against the eighth cam surface; When the connecting member abuts against the first stop member, the raised portion of the fifth cam surface abuts against the raised portion of the sixth cam surface; and when the connecting member abuts against the second stop member, the raised portion of the seventh cam surface abuts against the raised portion of the eighth cam surface.

10. The keyboard assembly according to claim 4 or 5, wherein: The end portion of the connecting member facing the first stop member further includes a fifth cam surface; the end portion of the first stop member facing the connecting member further includes a sixth cam surface, the fifth cam surface abutting the sixth cam surface; the fifth cam surface includes a fifth recessed portion, a sixth recessed portion and a third protrusion, the third protrusion being located between the fifth recessed portion and the sixth recessed portion, the surface of the third protrusion being an arcuate surface, and the slope of the fifth inclined surface extending from the surface of the third protrusion into the fifth recessed portion is smaller than the slope of the sixth inclined surface extending from the surface of the third protrusion into the sixth recessed portion; when the keyboard assembly is in a closed state, the protrusion of the sixth cam surface of the first stop member is located in the fifth recessed portion; and when the side surface of the first stop member abuts the side surface of the second stop member, the protrusion of the sixth cam surface of the first stop member is located in the sixth recessed portion; The end of the connecting member facing the second stop member also includes a seventh cam surface; the end of the second stop member facing the connecting member also includes an eighth cam surface, and the seventh cam surface abuts the eighth cam surface; the seventh cam surface includes a seventh recessed portion, an eighth recessed portion and a fourth protrusion, and the fourth protrusion is located between the seventh recessed portion and the eighth recessed portion, the surface of the fourth protrusion is an arc surface, and the slope of the seventh inclined surface extending from the surface of the fourth protrusion into the seventh recessed portion is smaller than the slope of the eighth inclined surface extending from the surface of the fourth protrusion into the eighth recessed portion; when the keyboard assembly is in a closed state, the protrusion of the eighth cam surface of the second stop member is located in the seventh recessed portion; and when the side surface of the third stop member abuts the side surface of the fourth stop member, the protrusion of the eighth cam surface of the second stop member is located in the eighth recessed portion.

11. The keyboard assembly according to any one of claims 2 to 10, wherein: The first axis includes a first helical surface, the second axis includes a second helical surface, and the first helical surface and the second helical surface have the same hand direction; The first rotating shaft assembly further includes an idler wheel, which is located between the first helical surface and the second helical surface. The first helical surface is meshed with the gear surface of the idler wheel, and the second helical surface is meshed with the gear surface of the idler wheel.

12. The keyboard assembly according to claim 1, wherein: The keyboard assembly further includes a first rotating module, the first rotating module includes a first rotating shaft, the second plate edge of the first support plate is rotatably connected to the first rotating shaft, and one end of the keyboard body is rotatably connected to the first rotating shaft.

13. The keyboard assembly according to claim 1, wherein: The keyboard assembly further includes a first rotating module, which is a flexible material layer. The flexible material layer is connected to the second plate edge of the first support plate, and the flexible material layer is connected to one end of the keyboard body.

14. The keyboard assembly according to any one of claims 1 to 13, wherein: When the keyboard assembly is in a closed state, along the direction from the first support plate to the keyboard body, the projection of the first support plate covers the projection of the first rotating module.

15. The keyboard assembly according to any one of claims 1 to 14, wherein: The keyboard assembly also includes a second rotating module, the second rotating module includes a second rotating shaft and a second rotating shaft assembly, the second rotating shaft assembly includes a first rotating bracket and a second rotating bracket, the first rotating bracket is rotatably connected to the second rotating shaft, and the first rotating bracket is fixedly connected to the first board edge of the first support plate; the second rotating bracket is rotatably connected to the second rotating shaft, and the second rotating bracket is fixedly connected to the third board edge of the second support plate.

16. The keyboard assembly according to claim 15, wherein: The first rotating bracket includes a first connecting plate and a first connecting arm, the first connecting plate is fixedly connected to the first plate edge of the first supporting plate, the first connecting arm is provided at the end of the first connecting plate, the first connecting arm includes a first connecting portion and a first arc-shaped rotating portion, the first connecting portion and the first arc-shaped rotating portion are arranged along the axial direction of the second rotating shaft, and the first connecting portion is sleeved on the second rotating shaft; The second rotating bracket includes a second connecting plate and a second connecting arm, the second connecting plate is fixedly connected to the third plate edge of the second support plate, the second connecting arm is provided at the end of the second connecting plate, the second connecting arm includes a second connecting portion and a second arc-shaped rotating portion, the second connecting portion and the second arc-shaped rotating portion are arranged along the axial direction of the second rotating shaft, and the second connecting portion is sleeved on the second rotating shaft; Along the axial direction of the second rotating shaft, the first connecting arms and the second connecting arms are alternately arranged, and along the rotation direction of the first rotating bracket and the second rotating bracket, the side surface of the first arc-shaped rotating portion is opposite to the side surface of the second arc-shaped rotating portion.

17. The keyboard assembly according to claim 15, wherein: The first rotating bracket includes a first connecting plate and a first connecting arm, the first connecting plate is fixedly connected to the first plate edge of the first supporting plate, the first connecting arm is provided at the end of the first connecting plate, and the first connecting arm is an arc-shaped rotating block; The second rotating bracket includes a second connecting plate and a second connecting arm, the second connecting plate is fixedly connected to the third plate edge of the second support plate, the second connecting arm is provided at the end of the second connecting plate, and the second connecting arm is an arc-shaped rotating block; Along the axial direction of the second rotating shaft, the first connecting arm and the second connecting arm are arranged in a one-to-one correspondence, and along the rotation direction of the first rotating bracket and the second rotating bracket, the side surface of the first connecting arm and the side surface of the second connecting arm are arranged opposite to each other.

18. The keyboard assembly according to any one of claims 1 to 14, wherein: The support assembly further includes a flexible material layer, wherein the flexible material layer is connected to the first board edge of the first support board, and the flexible material layer is connected to the third board edge of the second support board.

19. The keyboard assembly according to any one of claims 1 to 18, wherein: When the keyboard assembly is in an open state, an angle between an outer surface of the first support plate facing away from the key and an outer surface of the keyboard body facing away from the key toward the key is greater than or equal to 175° and less than or equal to 185°.

20. The keyboard assembly according to any one of claims 1 to 19, wherein: The third support plate includes a fifth plate edge, and the fourth plate edge of the second support plate is rotatably connected to the fifth support plate; or, The third support plate includes a fifth plate edge, the fourth plate edge of the second support plate is rotatably connected to the plate surface of the third support plate, and when the keyboard assembly is in the open state, the fifth plate edge abuts against the keyboard body.

21. The keyboard assembly according to any one of claims 1 to 20, wherein: The keyboard body is provided with a first pen slot, and the first support plate is provided with a second pen slot. When the keyboard assembly is in a closed state, the first pen slot and the second pen slot are arranged opposite to each other to form an accommodating space for accommodating a stylus.

22. An electronic device, characterized in that: It comprises a host and a keyboard assembly as described in any one of claims 1 to 21, wherein the host is located on a side of the keyboard body where the plurality of keys are provided, wherein: the third support plate of the keyboard assembly is detachably connected to the host.

23. The electronic device according to claim 22, wherein: When the electronic device is in an open state, the host, the second support plate, the first support plate and the keyboard body form a triangular support structure.

24. The electronic device according to claim 22 or 23, wherein: The host further includes a third magnetic component, which is located at one end of the host; the keyboard body further includes a fourth magnetic component; when the electronic device is in the open state, the third magnetic component and the fourth magnetic component are attracted to each other.

25. The electronic device according to claim 24, wherein: The keyboard body includes a plurality of fourth magnetic members sequentially arranged away from the first support plate.

26. The electronic device according to any one of claims 22 to 25, wherein: The keyboard assembly also includes a charging control circuit board, a connector and a main circuit board. The charging control circuit board is arranged on the first support plate, and the main circuit board is arranged on the keyboard body; the charging control circuit board is used to receive an external power supply, to power the battery of the host through the connector, and to power the main circuit board.

27. The electronic device according to claim 26, wherein: The first support plate further includes a power interface, and the charging control circuit board receives external power through the power interface.

28. The electronic device according to claim 26 or 27, wherein: The connector is provided on the first support plate, the second support plate or the third support plate, and the charging control circuit board is electrically connected to the connector via a flexible circuit board.

29. The electronic device according to any one of claims 26 to 28, wherein: The charging control circuit board includes a charging controller, and the main circuit board includes a mainboard processor, wherein: The charging controller is used to transmit the received external power signal to the mainboard processor; The mainboard processor is used to control the charging controller to charge the battery of the host when the battery of the host is not fully charged.

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