Protective sleeve, keyboard protective sleeve and electronic equipment

Abstract

The invention provides a protective sleeve, a keyboard protective sleeve and electronic equipment, the protective sleeve comprises a first part, a second part, a first rotating mechanism and a second rotating mechanism, and the first part and the second part are rotatably connected through the second rotating mechanism; the end, away from the second rotating mechanism, of the first part is connected with the first rotating mechanism. The first rotating mechanism is detachably connected with the electronic equipment, and the first part can rotate through the first rotating mechanism and the electronic equipment; the second part is used for setting a keyboard; when the first part and the second part are folded, the first part is used for covering one part of the back cover of the electronic equipment, and the second part is used for covering a display screen of the electronic equipment. According to the technical scheme provided by the embodiment of the invention, the settable area of the keyboard can be increased when the keyboard is arranged on the protective sleeve.

Description

Technical Field

[0001] This application relates to the field of electronic technologies, and in particular, to a protective cover, a keyboard protective cover, and an electronic device. Background Art

[0002] With the development of technology, the use of portable electronic devices such as mobile phones and tablet computers has become increasingly common. Portable electronic devices usually use a virtual keyboard displayed on the screen for input. Since the virtual keyboard is relatively small, it is easier to make input errors compared to a physical keyboard. A leather case keyboard can provide protection for an electronic device and at the same time provide a good input experience for users through a USB keyboard or a Bluetooth keyboard, and thus has been widely used.

[0003] When a conventional leather case keyboard is in use, the support plate part on the back side of the electronic device folds towards the back side of the electronic device, so that the electronic device, the support plate arranged on the back side of the electronic device, and the support plate in the same plane as the keyboard form a stable triangular support.

[0004] However, the lower side of the electronic device will tilt towards the keyboard direction, thus occupying the forehead space of the position where the keyboard is arranged, and reducing the available area for setting the keyboard. Summary of the Invention

[0005] This application provides a protective cover, a keyboard protective cover, and an electronic device, which can increase the area of the available area for setting the keyboard.

[0006] In a first aspect, a protective cover is provided, including: a first part, a second part, a first rotating mechanism, and a second rotating mechanism. The first rotating mechanism and the second rotating mechanism respectively include a first rotating shaft and a second rotating shaft. Among them, the first part and the second part are rotatably connected through the second rotating mechanism; one end of the first part far from the second rotating mechanism is connected to the first rotating mechanism; the first rotating mechanism is detachably connected to an electronic device, and the first part can rotate relative to the electronic device through the first rotating mechanism; the second part is used for arranging a keyboard; when the first part and the second part are folded in half, the first part is used for covering a part of the back cover of the electronic device, and the second part is used for covering the display screen of the electronic device.

[0007] In this embodiment, since the angles between the first part and the electronic device and between the first part and the second part in the protective cover are adjustable through two rotating mechanisms, the electronic device can be suspended and supported by the protective cover, that is, the bottom of the electronic device does not need to contact the second part, so that the electronic device does not need to cover the area of the second part, and the area of the available area for setting the keyboard is increased. In addition, the first part only protects a part of the back cover of the electronic device, and the self-weight of the protective cover can be reduced, making the protective cover more portable.

[0008] In combination with the first aspect, in some implementations of the first aspect, the second rotating mechanism includes a first connecting component, a third connecting component, and a second connecting component. The first connecting component is fixedly connected to the first part, and the third connecting component is fixedly connected to the second part. Wherein, the first connecting component and the second connecting component are rotatably connected, and the third connecting component and the second connecting component are rotatably connected; or the first connecting component and the second connecting component are rotatably connected; or, the third connecting component and the second connecting component are rotatably connected.

[0009] In this embodiment, the second rotating mechanism realizes the adjustment of the included angle between the first part and the second part by enabling at least one of the first connecting component and the third connecting component to rotate relative to the second connecting component.

[0010] In combination with the first aspect, in some implementations of the first aspect, at least part of the first connecting component is located on the side of the first part away from the first rotating mechanism; and / or, at least part of the third connecting component is located on the side of the second part close to the second rotating mechanism.

[0011] In this way, one end of the first part on the side of the second rotating mechanism can extend through the first connecting component, and / or one end of the second part on the side of the second rotating mechanism can extend through the first connecting component. Thus, when the protective cover is in use, the position of the electronic device can be supported by the first connecting component and set higher, reducing the occupation of the front space of the second part; and / or, an area formed by the third connecting component is added to the front end of the second part, and the area where the keyboard can be set on the second part is increased.

[0012] In combination with the first aspect, in some implementations of the first aspect, the first connecting component and the first part are in the same plane, and the third connecting component and the second part are in the same plane.

[0013] Being in the same plane may mean that the first connecting component or the third connecting component and the first part and the second part are respectively substantially in the same plane.

[0014] Thus

[0015] The included angle between the first connecting component and the first part can be less than a first threshold value, and the included angle between the third connecting component and the second part can be less than a second threshold value. The first threshold value and the second threshold value can be equal or unequal. When the first threshold value and / or the second threshold value is smaller, the thickness of the entire protective cover can be smaller, so that the protective cover can be more portable.

[0016] In combination with the first aspect, in some implementations of the first aspect, the second rotating shaft includes an upper rotating shaft and a lower rotating shaft. The upper rotating shaft includes an upper shaft core and an upper shaft sleeve, the lower rotating shaft includes a lower shaft core and a lower shaft sleeve, the first connecting component includes the upper shaft core, the third connecting component includes the lower shaft core, and the second connecting component includes the upper shaft sleeve and the lower shaft sleeve. The first connecting component and the third connecting component are both rotatably connected to the second connecting component through the upper rotating shaft and the lower rotating shaft.

[0017] In this embodiment, the first connecting component and the second connecting component are rotatably connected through the upper rotating shaft, and the third connecting component and the second connecting component are rotatably connected through the lower rotating shaft. Thus, the first connecting component and the third connecting component drive the first part and the second part to rotate relative to the second connecting component respectively, so that the included angle between the first part and the second part changes within a certain range.

[0018] In combination with the first aspect, in some implementations of the first aspect, the second rotating shaft includes a lower rotating shaft. The lower rotating shaft includes a lower shaft core and a lower shaft sleeve, the third connecting component includes the lower shaft core, and the second connecting component includes the lower shaft sleeve. The third connecting component is rotatably connected to the second connecting component through the lower rotating shaft.

[0019] In this embodiment, the third connecting component and the second connecting component can be rotatably connected through the lower rotating shaft, and the first connecting component and the second connecting component can be fixedly connected. Thus, the included angle between the first part and the second part can change within a certain range.

[0020] Optionally, the second rotating shaft may include an upper rotating shaft. The upper rotating shaft includes an upper shaft core and an upper shaft sleeve. The first connecting component includes the upper shaft core, and the second connecting component includes the upper shaft sleeve. The first connecting component is rotatably connected to the second connecting component through the upper rotating shaft.

[0021] In this way, the first connecting component and the second connecting component can be rotatably connected through the upper rotating shaft, and the third connecting component and the second connecting component can be fixedly connected. Thus, the included angle between the first part and the second part can change within a certain range.

[0022] In combination with the first aspect, in some implementations of the first aspect, the first rotating shaft includes a first shaft core and a first shaft sleeve. One of the first shaft core and the first shaft sleeve includes a first connecting portion, and the first connecting portion is fixedly connected to the first part.

[0023] In this embodiment, the first part is fixedly connected to the first shaft core or the first shaft sleeve. Thus, when the first shaft core and the first shaft sleeve rotate relative to each other, the first part can be driven to rotate relative to the electronic device.

[0024] In combination with the first aspect, in some implementations of the first aspect, when the first part and the second part are folded in half, the first part is used to protect one-third to one-half of the back cover of the electronic device.

[0025] In combination with the first aspect, in some implementations of the first aspect, the first rotating mechanism is detachably connected to the electronic device by magnetic attraction.

[0026] A separate first magnetic component can be provided in the first rotating mechanism, and the attraction between the first magnetic component and the metal back cover of the electronic device or a second magnetic component separately provided on / inside the back cover enables the reliable connection between the first rotating mechanism and the electronic device.

[0027] Alternatively, the first rotating shaft in the first rotating mechanism can be made of a magnetic material or the housing of the first rotating mechanism can be made of a magnetic attraction material or a magnetic material, so as to generate an attraction between the metal back cover of the electronic device or a second magnetic component separately provided in the electronic device, thereby realizing the reliable connection between the first rotating mechanism and the electronic device.

[0028] The connection method can also be a snap connection, a frictional connection, etc., or at least two of the above connection methods. The present application does not limit this.

[0029] In combination with the first aspect, in some implementations of the first aspect, the second rotating mechanism includes a stylus receiving groove, and the stylus receiving groove 241 is used to set a stylus.

[0030] The stylus receiving groove is provided in the second rotating mechanism. Corresponding grooves can be provided in the first connection component and the third connection component respectively, so as to jointly form the stylus receiving groove. The setting of the stylus receiving groove will not affect the opening and closing of the protective cover and can enhance the user's input experience.

[0031] In combination with the first aspect, in some implementations of the first aspect, the first rotating mechanism is used to make the range of the first angle between the first part and the plane where the electronic device is located be 0° to 90°.

[0032] In combination with the first aspect, in some implementations of the first aspect, the second rotating mechanism is used to make the range of the second angle between the first part and the second part be 0° to 180°.

[0033] In combination with the first aspect, in some implementations of the first aspect, the first rotating mechanism is used to make the magnitude of the first angle be steplessly adjusted and / or the second rotating mechanism makes the magnitude of the second angle be steplessly adjusted.

[0034] Optionally, the angle can also be adjusted in steps.

[0035] In connection with the first aspect, in some implementations of the first aspect, both ends of the first rotating mechanism include buckles, and the first rotating mechanism is detachably connected to the side surface of the electronic device through the buckles.

[0036] In connection with the first aspect, in some implementations of the first aspect, one side of the first rotating mechanism that contacts the back cover of the electronic device includes a friction portion, and the first rotating mechanism is detachably connected to the electronic device through the friction portion.

[0037] In connection with the first aspect, in some implementations of the first aspect, the second portion is used to set a touchpad.

[0038] In a second aspect, a keyboard cover is provided, including a cover and a keyboard according to the first aspect or any implementation of the first aspect, and the keyboard is disposed on the second portion.

[0039] In a third aspect, an electronic device is provided, including a host and a cover according to the first aspect or any implementation of the first aspect, or a keyboard cover according to the second aspect.

[0040] The host can be an electronic device, such as a tablet computer, a mobile phone, a display screen, and other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of a leather case keyboard.

[0042] Figure 2 It is a schematic structural diagram of the cover provided by an embodiment of the present application.

[0043] Figure 3 It is a schematic structural diagram of the cover provided by an embodiment of the present application.

[0044] Figure 4 It is a schematic structural diagram of the first rotating mechanism provided by an embodiment of the present application.

[0045] Figure 5 It is a schematic structural diagram of the first rotating mechanism provided by an embodiment of the present application.

[0046] Figure 6 It is a schematic structural diagram of the first rotating shaft provided by an embodiment of the present application.

[0047] Figure 7 It is a schematic structural diagram of the first portion provided by an embodiment of the present application.

[0048] Figure 8 It is a schematic structural diagram of the second rotating mechanism provided by an embodiment of the present application.

[0049] Figure 9 It is a schematic structural diagram of the second rotating mechanism provided by an embodiment of the present application.

[0050] Figure 10 It is a schematic structural diagram of a middle appearance shell provided by an embodiment of the present application. Detailed implementation manners

[0051] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0052] In the description of the present application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0053] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a contact connection, or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0054] Figure 1 It is a schematic structural diagram of a common leather case keyboard. As Figure 1 shown, the leather case keyboard includes a first support plate 110 and a second support plate 120. The first support plate 110 and the second support plate 120 are connected by a bending part 130, and the two support plates can rotate around the bending part 130. The first support plate 110 includes a first part 112 and a second part 114. The first part 112 is used for fitting and connecting with the back cover of the electronic device, and the second part 114 and the first part 112 can rotate through the crease 116 connecting the two parts. The second support plate 120 includes a third part 122, and the third part 122 is used for setting the keyboard. The second support plate 120 is provided with at least one card slot 124. When the electronic device is in use, the lower side can be stuck in the card slot 124, and the upper side abuts against 112. Thus, the electronic device, the second part 114 of the first support plate 110, and the second support plate 120 form a stable triangular support structure.

[0055] However, for the stability of the overall structure, the card slot 124 is usually arranged at a position of the second support plate 120 close to the keyboard, that is, a certain area needs to be reserved in front of the third part 122 where the keyboard is arranged. When the electronic device is stuck in the card slot 124, it will block the keyboard head space 126 on the second support plate 120. The area where the keyboard can be arranged is small, resulting in a reduction in the overall size of the keyboard or the inability to set a touchpad on the keyboard, and the user experience is poor.

[0056] The embodiment of the present application provides a protective cover that can increase the area where the keyboard can be arranged.

[0057] Figure 2 It is a schematic structural diagram of the protective cover provided by the embodiment of the present application. Figure 3 It is a schematic structural diagram of the protective cover assembled with the electronic device 250 provided by the embodiment of the present application. Refer to Figure 2 and Figure 3 The protective cover includes a first part 210 and a second part 220. A first rotating mechanism 230 is arranged on a side of the first part 210 away from the second part 220. The first part 210 and the second part 220 are rotatably connected through a second rotating mechanism 240. The second part 220 is used to arrange the keyboard 222. The first part 210 can rotate around the first rotating mechanism 230, and the first rotating mechanism 230 can be detachably connected to the electronic device 250, so as to change the first included angle α between the first part 210 and the electronic device 250. The second part 220 and the first part 210 can rotate around the second rotating mechanism 240, so as to change the second included angle β between the first part 210 and the second part 220. The first included angle α can be the included angle between the plane where the first part 210 is located and the plane where the back cover of the electronic device 250 is located, and the second included angle β can be the included angle between the plane where the first part 210 is located and the plane where the second part 220 is located.

[0058] Through the cooperation of the first rotating mechanism 230 and the second rotating mechanism 240, when the electronic device 250 is in the notebook mode, the electronic device 250 can be suspended above the second part 220. Compared with the electronic device 250 being stuck on the second part 220 through a card slot, the shielding of the head area of the second part 220 (the area of the second part 220 close to the second rotating mechanism 240) by the electronic device 250 is significantly reduced. And by adjusting the size of the second included angle β, the second included angle β between the first part 210 and the second part 220 can be close to or greater than 90°, thereby further reducing the occupation of the head area of the second part 220 by the electronic device 250, significantly increasing the area of the region where the keyboard 222 can be set on the second part 220. For example, the size of each key of the keyboard 222 can be increased. Another example is that more function keys can be set on the keyboard 222. Another example is that a touchpad 222 can be set on the second part 220, improving the accuracy and experience of user input.

[0059] When the touchpad 222 is set on the second part 220, as Figure 2 shown, the touchpad 222 can be set in the area of the second part 220 far from the second rotating mechanism 240.

[0060] When the user does not need to use the electronic device 250, the protective cover can be in the closed state (that is, the first part 210 and the second part are folded in half). At this time, the first part 210 covers a part of the back cover of the electronic device 250, and the second part 220 covers the display screen side of the electronic device 250, so that the protective cover can provide protection for the electronic device 250.

[0061] In the embodiments of the present application, the orientations indicated by orientation words such as front, head, top, and bottom are based on the orientation when the electronic device 250 is supported by the protective cover and is in the notebook mode. The notebook mode means that an electronic device 250 such as a tablet computer provides an operation experience similar to that when a notebook computer is opened through the protective cover and the keyboard or the protective cover with a keyboard for the user, as Figure 2 or Figure 3 shown. The front or the head refers to the position of the second part 220 close to the second rotating mechanism 240 when the user faces the display screen of the electronic device. The top and the bottom respectively refer to the parts of the electronic device 250 or the first part 210 far from the second rotating mechanism 240 and close to the second rotating mechanism 250.

[0062] In one embodiment, the second rotating mechanism 240 may include a stylus receiving groove 241 for placing the stylus 260. Setting the stylus 260 on the second rotating mechanism 240 will not affect the closing of the protective cover, can save space utilization, and improve the user input experience.

[0063] Optionally, the stylus receiving groove 241 for placing the stylus can also be provided on the second part 220, and the present application does not limit this.

[0064] The first rotating mechanism 230 can be connected to the electronic device 250 in various ways. For example, a magnetic attracting member, a buckle or a friction portion can be provided on the first rotating mechanism 230 so as to be able to connect with the electronic device 250. Taking the thickness direction of the first rotating mechanism 230 as the z direction (the direction towards the electronic device is the positive direction of the z axis), the length direction and the width direction of the first rotating mechanism 230 are the x direction and the y direction respectively. Figure 4 Figures (a) and (b) are views in the positive and negative directions of the z axis of the first rotating mechanism 230 respectively.

[0065] As Figure 4 As shown in Figure (a), the buckles 2322 can be provided at both ends of the axial direction of the first rotating mechanism 230. The buckles 2322 can be connected to the side wall of the electronic device 250 by clamping, so that the electronic device 250 can be connected to the first rotating mechanism 230. Of course, corresponding card slots can also be provided at the connection between the electronic device 250 and the buckles 2322 to improve the connection reliability.

[0066] As Figure 4 As shown in Figure (b), the friction member can be provided on the surface of the first rotating mechanism 230 in contact with the back cover of the electronic device 250. The friction member can be a rubber member or the like. By the cooperation of the friction member and the smooth surface of the back cover of the electronic device 250, a large frictional force is generated, so that the electronic device 250 is connected to the first rotating mechanism 230, and the possibility of the electronic device 250 sliding relative to the first rotating mechanism 230 is reduced.

[0067] When the first rotating mechanism 230 and the electronic device 250 are connected by magnetic attraction, a first magnetic attracting member can be provided on the first rotating mechanism 230. The first magnetic attracting member can be adsorbed by the magnetic attraction force between the first magnetic attracting member and the metal back cover of the electronic device 250, or a second magnetic attracting member can be provided at a corresponding position inside the back cover of the electronic device 250, so that the first rotating mechanism 230 is adsorbed by the magnetic attraction force between the first magnetic attracting member and the second magnetic attracting member. Of course, the first magnetic attracting member may not be provided additionally. For example, at least one component constituting the first rotating mechanism 230 can have magnetic attraction force. Schematically, the housing can have magnetic attraction force.

[0068] It should be understood that the foregoing only schematically introduces the connection methods between the first rotating mechanism 230 and the electronic device 250 by taking snap connection, friction connection, and magnetic attraction connection as examples. The first rotating mechanism 230 and the electronic device 250 can also be fixed in other ways. For example, they can be connected by cooperating mechanisms such as positioning posts and positioning holes, or by adhesive bonding. In addition, the first rotating mechanism 230 can be connected to the electronic device 250 by two or more of the above methods. For example, while a magnetic attraction member is provided in the first rotating mechanism 230, snaps are also provided at both ends to enhance the connection reliability between the first rotating mechanism 230 and the electronic device 250. The connection method between the first rotating mechanism 230 and the electronic device 250 in this application is not limited.

[0069] In an embodiment of this application, at least one first connecting portion 23444 can extend from the first rotating mechanism 230, and at least one connecting hole can be included on the first connecting portion 23444. Thus, the first rotating mechanism 230 can be connected to the first portion 210 through the connecting hole by means of threaded connection, riveting, snap connection, etc. Of course, the connection method between the first rotating mechanism 230 and the first portion 210 is not limited to threaded connection, riveting, and snap connection. It can also be connected by means of adhesive bonding, pre-pressing, welding, etc. This application does not limit this.

[0070] Figure 5 A schematic structural diagram of a first rotating mechanism 230 provided by an embodiment of this application is shown. As Figure 5 shown in (a), the first rotating mechanism 230 can include: a first housing 232, a first rotating shaft 234, and a second housing 236. The first housing 232 and the second housing 236 can play the roles of appearance decoration and support, used to block the internal structure of the first rotating mechanism 230, thereby increasing the aesthetics of the first rotating mechanism 230, and can provide support for internal structural members. When the first rotating mechanism 230 and the electronic device 250 are in a connected state, the first housing 232 can be located on the side away from the back cover of the electronic device 250, and the second housing 236 can be located on the side close to the back cover of the electronic device 250. For example, the second housing 236 can at least partially fit with the back cover of the electronic device 250. The first rotating shaft 234 can be provided on the first housing 232, and the number of the first rotating shafts 234 can be one or more. The second housing 236 can be connected to the first housing 232 by means of adhesive bonding. It is not limited to adhesive bonding, and can also be connected by means of snaps, threaded connectors, riveting, etc. When the first rotating mechanism 230 includes a first magnetic attraction member, the first magnetic attraction member can also be provided on the first housing 232. The connection methods of the first magnetic attraction member and the first rotating shaft 234 to the first housing 232 can be threaded connection, slot connection, etc. This application does not limit this.

[0071] As Figure 6As shown in (a) of , the first rotating shaft 234 may include a first shaft core 2342 and a first shaft sleeve 2344. The first shaft core 2342 may include a shaft core main body 23422 and shaft core end portions 23424 disposed on both sides of the shaft core main body 23422. The cross-section of the shaft core main body 23422 may be circular, and the shape of the shaft core end portions 23424 may be set according to requirements. For example, the cross-section of the shaft core end portions 23424 may be circular, rectangular, or other shapes. The first shaft sleeve 2344 includes a shaft sleeve main body 23442 and a first connecting portion 23444. One end of the shaft sleeve main body 23442 is connected to the first connecting portion 23444, and the shaft sleeve main body 23442 may form a hole with a notch.

[0072] When the first shaft core 2342 and the first shaft sleeve 2344 are engaged, the shaft core main body 23422 extends into the hole formed by the shaft sleeve main body 23442, and the shaft core end portions 23424 protrude from both ends of the hole formed by the shaft sleeve main body 23442, as Figure 6 shown in (b) of . The first shaft core 2342 may be connected to the first housing 232 through the shaft core end portions 23424. Figure 5 (b) of shows a view in the positive z-axis direction of the first housing 232. A groove 2326 matching the shape of the shaft core end portions 23424 and a groove 2324 matching the shaft core main body 23422 are formed in the first housing 232, so that the first shaft core 2342 is connected to the first housing 232 through the limiting effect of the grooves; the first shaft sleeve 2344 is connected to the first part 210 through the first connecting portion 23444. In this way, when the first shaft sleeve 2344 rotates relative to the first shaft core 2342, the first part 210 can rotate relative to the electronic device 250, so that the first included angle α between the electronic device 250 and the first part 210 changes within a certain range.

[0073] In the embodiment of the present application, the first rotating shaft 234 may be a damping rotating shaft.

[0074] The angle between the first shaft core 2342 and the first shaft sleeve 2344 can be adjusted steplessly, that is, the size of the first included angle α can be adjusted steplessly. When the shaft core main body 23422 rotates relative to the shaft sleeve main body 23442, the hole with a notch formed by the shaft sleeve main body 23442 deforms to apply a gripping force to the shaft core main body 23422, playing a damping role. In addition, the notch formed by the shaft sleeve main body 23442 can also reduce the wear of the first rotating shaft 234.

[0075] The first rotating shaft 234 may not be limited to using Figure 6 the structure shown in to play a damping role.

[0076] For example, in one embodiment, an inner wall of a hole formed by a bushing body 23442 may be attached with a layer of elastic material. Thus, when a first shaft core 2332 rotates relative to a first bushing 2334, the elastic material deforms to apply a gripping force to the first shaft core 2342, serving as a damping function. At this time, the bushing body 23442 may form a hole with a notch or a hole without a notch. Optionally, the elastic material may be attached to an outer surface of the shaft core body 23422.

[0077] In another embodiment, an inner wall of a hole formed around the bushing body 23442 may include a base circular arc segment and at least one variable diameter circular arc segment. The curvatures of the base circular arc segment and the variable diameter circular arc segment are different, so as to generate a damping force by the mutual extrusion between the shaft core body 23422 and the variable diameter circular arc segment. Refer to Figure 6 (d) of. A base circular arc segment a and a variable diameter circular arc segment b are formed around an inner wall of the bushing body 23442. The shaft core body 23422 is fitted and sleeved in the base circular arc segment a. The radius of the variable diameter circular arc segment b is smaller than the radius of the base circular arc segment a. A flat position c is formed at a position on an outer circular surface of the shaft core body 23422 that cooperates with the variable diameter circular arc segment b. In this way, when the shaft core body 23422 is sleeved in the bushing body 23442 and rotates relative to the bushing body 23442, an outer circular surface of the shaft core body 23422 contacts and squeezes the variable diameter circular arc segment b of the inner wall of the bushing body 23442, causing the bushing body 23442 to expand radially outward and generate an elastic contraction force to grip the shaft core body 23422 and apply a rotational damping force to the shaft core body 23422, thereby serving as a damping function. It should be understood that the number and dimensions of the variable diameter circular arc segments on the inner wall of the bushing body 23442 may be set according to requirements. When the damping function is achieved through the shape and structure design of the shaft core body 23422 and the bushing body 23442, the volume of the first rotating mechanism 230 can be reduced, so that the protective sleeve is thinner and lighter.

[0078] In an embodiment of the present application, the relative rotation between the first shaft core 2342 and the first bushing 2344 may enable stepless adjustment of a first included angle α between the first part 210 and the electronic device 250 within a range of 0° to 180°. The adjustment range of the first included angle α may also be 0° to 90°, 0° to 120°, or 0° to 150°, etc. The present application does not limit this, and a° to b° can be understood to include the endpoint values.

[0079] In another embodiment of the present application, the relative rotation between the first shaft core 2342 and the first shaft sleeve 2344 can enable a stepped adjustment of the first included angle α between the first part 210 and the electronic device 250 within a certain angle range. The angle range can refer to the angle range during stepless adjustment. During stepped adjustment, the adjustable angle can be in steps of 10°, 15°, 20°, 30°, 60° or any other angle, so that the first included angle α varies within the corresponding angle range. Taking the step of 15° and the adjustment range of 0° to 90° as an example, the first included angle α between the first part 210 and the electronic device can be 0°, 15°, 30°, 45°, 60°, 75° or 90°.

[0080] During stepped adjustment, the structures of the first shaft core 2342 and the first shaft sleeve 2344 can be somewhat different from those during stepless adjustment. For example, matching protrusions and depressions can be provided at corresponding positions of the first shaft core 2342 and the first shaft sleeve 2344 along the circumferential direction to control the stable positions when the two rotate relative to each other. The distance between adjacent pairs of protrusions and depressions can be set according to the steps of stepped adjustment. For example, a pair of protrusions and depressions is provided every 15° along the circumferential direction.

[0081] It should be understood that Figure 6 Only the structure of the first rotating shaft 234 is schematically shown. In fact, the first shaft core 2342 and the first shaft sleeve 2344 can have other structures. For example, only one side of the shaft core main body 23422 of the first shaft core 2342 is provided with the shaft core end 23424. Another example is that the first shaft core 2342 may not be fixedly connected to the first housing 232, but to other components in the first rotating mechanism 230. Schematically, it is connected to the first magnetic attracting member or the second housing 236.

[0082] When the first rotating mechanism 230 includes multiple sets of first rotating shafts 234, when two sets are provided, the two sets can be respectively arranged on both sides of the axis of the first rotating mechanism 230. When three sets are provided, the three sets can be evenly distributed along the first rotating mechanism 230. When more sets are provided, they can be arranged similarly, which will not be elaborated here. The torsional force provided by the first rotating shaft 234 can be related to the shape, size and number of the first rotating shafts 234. When multiple sets of first rotating shafts 234 are provided, the size of each first rotating shaft 234 can be reduced, which is beneficial to the thin and light design of the protective cover. In addition, when multiple sets of first rotating shafts 234 are provided, the length of the first rotating shaft 234 can be shorter, so that the coaxiality of the processing of the first shaft core 2342 is easily met, the processing difficulty is lower, and the assembly difficulty of the first rotating shaft 234 is also reduced.

[0083] There can also be other fitting methods between the first shaft core 2342 and the first shaft sleeve 2344 in the first rotating shaft 234. For example, the two ends of the first shaft core 23342 can respectively extend into the holes formed by two first shaft sleeves 2344. In this way, the numbers of the first shaft core 2342 and the first shaft sleeve 2344 can be the same or different; or only one side of the shaft core main body 23422 of the first shaft core 2342 is connected to the shaft core end 23424, and when the shaft core main body 23422 extends into the hole formed by the first shaft sleeve 2332, the shaft core end 23424 extends out of one end of the hole, so as to be able to connect with the first housing 232. The present application does not limit the fitting method between the first shaft core 2342 and the first shaft sleeve 2344.

[0084] The first housing 232 and the second housing 236 are not necessary. For example, when the first housing 232 and / or the second housing 236 are not provided, a shielding shaft 2346 can be provided between multiple first rotating shafts 234, and the two ends of the shielding shaft between adjacent two first rotating shafts 234 can be fixed to the shaft core end 23424 of the first shaft core 2342, as Figure 6 shown in (c) of.

[0085] In one embodiment, when only one side of the shaft core main body 23422 is connected to the shaft core end 23424, the two ends of the shielding shaft can extend into the holes formed by adjacent two first shaft sleeves 2344 (not shown in the figure).

[0086] The first part 210 can be formed using materials such as plastic, rubber parts, and metal. In order to improve the feel and appearance of the protective cover, a soft material layer such as leather or rubber can be attached to the surface of the first part 210 away from the electronic device 250. As Figure 7 shown in (a) of, the first end of the first part 210 can include a second connecting part 212 corresponding to the first connecting part 23444. The second connecting part 212 can be formed using metal or plastic. For example, it can be fixed to the first part 210 by pre-pressing or gluing, etc. The second connecting part 212 can include a hole corresponding to the first connecting part 23444. When the holes of the two connecting parts are aligned, they can be fixed by means of rivets, screws, etc., so that the first part 210 and the first rotating mechanism 230 are connected.

[0087] In one embodiment, a connecting part similar to the first connecting part 23444 that protrudes from the main body part of the first part 210 can be provided at one end of the first part 210, and a fitting part can be provided on the first shaft core 2342 or the first shaft sleeve 2344 in the first rotating shaft 234. Thus, the connecting part that protrudes from the main body part of the first part 210 can extend into the first rotating mechanism and cooperate with the corresponding part in the first rotating shaft 234 to realize the connection between the first part 210 and the first rotating shaft 234.

[0088] Optionally, a protrusion corresponding to the hole of the first connecting portion 23444 may be provided on the second connecting portion 212 of the first part 210. After the protrusion and the hole are snap-connected, the first rotating mechanism 230 and the first part can be connected.

[0089] The first part 210 and the first rotating mechanism 230 may also be connected by means such as gluing and welding, and the present application does not limit this.

[0090] Figure 6 In [description], the first connecting portion 23444 is provided on the first bushing 2344, and the first shaft core 2342 is fixedly connected to the first housing 232. In some embodiments, the first connecting portion may be provided on the first shaft core, and the first bushing is fixedly connected to the first housing 232. Thus, the first shaft core is fixedly connected to the first part 210 through the first connecting portion and can drive the first part 210 to rotate relative to the electronic device 250.

[0091] In the embodiments of the present application, the area of the first part 210 may be smaller than the area of the back cover of the electronic device 250. That is to say, the first rotating mechanism 230 may be connected to the electronic device 250 in the middle of the back cover of the electronic device 250. For example, the first rotating mechanism 230 is connected to the electronic device 250 at a position close to the bottom 1 / 3 to 1 / 2 of the back cover of the electronic device 250. Compared with the first rotating mechanism 230 being connected to the top of the back cover of the electronic device 250 and the first part 210 completely covering the back cover of the electronic device 250 when the protective cover is closed, the self-weight of the back shell of the protective cover can be reduced by at least 1 / 2. Of course, this ratio can also be determined according to requirements. For example, the position where the first rotating mechanism 230 is connected to the back cover of the electronic device 250 may be located at positions close to the bottom 1 / 5, 1 / 4, 3 / 2, 3 / 4, 2 / 5, 3 / 5, 4 / 5, and the present application does not limit this. When the connection position of the first rotating mechanism 230 to the electronic device 250 is close to the top side of the electronic device 250, the first part 210 can cover more areas of the back cover of the electronic device 250 when the protective cover is closed, so as to provide better protection for the electronic device 250. When the connection position of the first rotating mechanism 230 to the electronic device 250 moves towards the bottom side of the electronic device, the first part 210 will cover less areas of the back cover of the electronic device 250 when the protective cover is closed, and the self-weight of the protective cover can be reduced.

[0092] Figure 7Part (b) shows a schematic diagram of the back cover side of the electronic device 250 when the protective case is in the closed state. It can be seen that the connection position of the first rotating mechanism 230 to the back cover of the electronic device 250 is approximately at the position of 1 / 3 to 1 / 2 of the bottom side of the electronic device 250 (that is, the side of the electronic device 250 close to the second rotating mechanism 240), and the first part 210 can protect the area from 1 / 3 to 1 / 2 starting from the bottom of the back cover of the electronic device 250. The self-weight of the protective case is small, making it light and portable, providing a better mobile usage experience for users.

[0093] Optionally, the area of the first part 210 can also be approximately equal to the area of the back cover of the electronic device 250. In this way, when the protective case is closed, the first part 210 can cover the back cover of the electronic device 250, providing a better protection effect for the electronic device 250. At this time, the middle part of the first part 210 is connected to the first rotating mechanism 230. The first part 210 can include a part close to the second rotating mechanism 240 and a part far from the second rotating mechanism 240 of the first rotating mechanism 230. The part on the other side of the first rotating mechanism 230 can always be in a fitting or contacting state with the back cover of the electronic device 250 when the electronic device 250 is in the notebook mode.

[0094] Alternatively, the first rotating mechanism 230 is still connected to the first part at the first end of the first part 210, but the first rotating mechanism 230 can be arranged at the top of the electronic device 250, so that the first part 210 can cover the entire back cover of the electronic device 250.

[0095] The second end of the first part 210 can include a connecting plate 214, and the connecting plate 214 can be connected to the second rotating mechanism 240 through connectors such as threads and rivets.

[0096] Figure 8 Shows a schematic structural diagram of a second rotating mechanism 240 provided by an embodiment of the present application. Taking the thickness direction of the second rotating mechanism 240 as the z direction, and the length direction and width direction as the x direction and y direction respectively, as Figure 8As shown, the second rotating mechanism 240 may include a first connecting component 242, a second connecting component 244, and a third connecting component 246. The first part 210 may be connected to the first connecting component 242 through a connecting plate 214. The third connecting component 246 may include a connecting plate 24642, and the third connecting component 246 is connected to the second part 220 through the connecting plate 24642. The first connecting component 242 may rotate relative to the second connecting component 244 and / or the third connecting component 246 may rotate relative to the second connecting component 244. Thus, the first connecting component 242 may drive the first part 210 to rotate relative to the second connecting component 244 and / or the third connecting component 246 may drive the second part 220 to rotate relative to the second connecting component 244, realizing the adjustment of the second included angle β between the first part 210 and the second part 220. Here, taking the example that both the first connecting component 242 and the third connecting component 246 can rotate relative to the second connecting component 244, the structure of the second rotating mechanism 240 will be introduced.

[0097] Figure 9 is an exploded view of the second rotating mechanism 240. The second rotating mechanism 240 includes: an upper shell 2422, an upper appearance shell 2424, an upper shaft core 2426, an upper locking cover plate 2428, a lower shell 2462, a lower appearance shell 2464, a lower shaft core 2466, a lower locking cover plate 2468, a middle cover plate 2442, and a middle appearance shell 2444. Among them, the upper shell 2422, the upper appearance shell 2424, the upper shaft core 2426, and the upper locking cover plate 2428 form the first connecting component 242, the lower shell 2462, the lower appearance shell 2464, the lower shaft core 2466, and the lower locking cover plate 2468 form the third connecting component 246, and the middle cover plate 2442 and the middle appearance shell 2444 form the second connecting component 244.

[0098] The middle appearance shell 2444 may include at least one upper shaft sleeve 24442 and at least one lower shaft sleeve 24444. Figure 9 It is schematically shown in that the number of the upper shaft sleeve 24442 and the lower shaft sleeve 24444 is two. The upper shaft core 2426 and the upper shaft sleeve 24442 cooperate to form an upper rotating shaft, which can drive the first connecting component 242 to rotate relative to the second connecting component 244. The lower shaft core 2466 and the lower shaft sleeve 24444 cooperate to form a lower rotating shaft, which can drive the third connecting component 246 to rotate relative to the second connecting component 244. The upper shaft core 2426 and the lower shaft core 2466 respectively include a connecting portion 24262 and a connecting portion 24662. The connecting portion 24262 is connected to the groove 24244 of the upper appearance shell 2424 in a matching manner, and the connecting portion 26662 and the corresponding groove 24646 of the lower appearance shell 2444 are matched ( Figure 9(b) and (c) respectively show the specific structures of the upper appearance shell 2424 and the lower appearance shell 2464, so that the upper shaft core 2426 and the lower shaft core 2466 are respectively connected to the upper appearance shell 2424 and the lower appearance shell 2444. After the upper shaft core 2426 and the lower shaft core 2466 are respectively connected to the upper appearance shell 2424 and the lower appearance shell 2444, the upper locking cover plate 2426 and the lower locking cover plate 2466 respectively cover the positions where the two appearance shells cooperate with the connecting part ( Figure 9 the positions of the dashed boxes in (b) and (c)), and can be respectively connected to the upper appearance shell 2424 and the lower appearance shell 2444 by means of bonding, riveting, threading, buckling, etc., so as to shield the corresponding structures. The middle cover plate 2442 covers the side of the middle appearance shell 2444 facing the user. The middle cover plate 2442 includes a notch 24422 provided between the upper shaft sleeve 24442 and the lower shaft sleeve 24444. The middle cover plate 2442 is stuck between the upper and lower shaft sleeves through this notch and is connected to the middle appearance shell 2444 by means of gluing, etc. Through the shielding of the upper locking cover plate 2428, the lower locking cover plate 2468 and the middle cover plate 2442, when the second rotating mechanism 240 is opened, the side of the second rotating mechanism 240 facing the user can be made more beautiful.

[0099] The side of the upper appearance shell 2424 close to the upper shell includes a groove 24246. The connecting plate 214 of the first part 210 can cooperate with this groove 24246, so that the first part 210 is connected to the upper appearance shell 2424. After the connecting plate 214 is connected to this groove 24246, both ends of the upper shell 2422 can clamp both ends of the upper appearance shell 2424 and are fixed to the upper appearance shell 2424 by means of gluing to shield the structure of the connecting plate 214. The lower shell 2462 can also clamp both ends of the lower appearance shell 2464 at both ends and be fixed to the lower appearance shell 2464 by means of gluing.

[0100] In some embodiments, the fixing methods of the upper shell 2422, the lower shell 2462 and the middle cover plate 2442 to the upper appearance shell, the lower appearance shell 2464 and the middle appearance shell 2444 are not limited to gluing. For example, they can be connected by means of buckles, threaded connectors, rivet connectors, etc. The present application does not make any limitations in this regard.

[0101] The lower appearance shell 2464 includes a connecting plate 24642 for connecting to the second part 220.

[0102] In one embodiment, the corresponding sides of the upper appearance shell 2424 and the lower appearance shell 2464 respectively include a stylus groove 24242 and 24644 (as Figure 9 shown in (b) and (c)), and the two grooves cooperate to form a stylus receiving groove for receiving a stylus.

[0103] The rotation angle between the central axis core and the shaft sleeve in the second rotation mechanism 240 can also be steplessly adjusted. The structures and the mating manners of the central axis core and the shaft sleeve can refer to the descriptions of the first central axis 2342 and the first shaft sleeve 2344 in the first rotation mechanism 230 in the foregoing text, and will not be elaborated herein.

[0104] Optionally, the rotations of the upper rotating shaft and the lower rotating shaft in the second rotation mechanism 240 can also be stepwise adjusted. For example, the steps of the stepwise adjustment can be 15°, 20°, 30°, 45°, etc., and the present application does not limit this.

[0105] In an embodiment of the present application, the upper rotating shaft and the lower rotating shaft can enable the first connection assembly 242 and the third connection assembly 246 in the second rotation mechanism 240 to respectively rotate 90° relative to the second connection assembly 244, that is, the first part 210 and the second part 220 rotate 90° relative to the second connection assembly 244. In this way, the range of the second included angle β between the first part 210 and the second part 220 can be 0° to 180°.

[0106] The second rotation mechanism 240 is not limited to Figure 9 the structure shown. For example, in an embodiment, only one of the first connection assembly 242 and the third connection assembly 246 can rotate relative to the second connection assembly 244. Taking the third connection assembly 246 can move relative to the second connection assembly 244 as an example, the structure of the middle outer shell 2444 can be as Figure 10 shown. The structure of the third connection assembly 246 and the connection manner between the third connection assembly 246 and the second connection assembly 2444 can refer to Figure 9 shown, but the composition of the first connection assembly 242 and Figure 9 compared, may not include the upper shaft core 2426. The shapes of other components in the first connection assembly 242 can also refer to Figure 9 shown. The middle outer shell 2444 can include a connection portion 24446. This connection portion 24446 can be similar to Figure 9 the connection portion 24262 of the upper shaft core 2426 in cooperating with the groove 24244 of the upper outer shell 2424, but since the upper outer shell 2424 and the middle outer shell 2444 are not connected by a rotating shaft, the first connection assembly 242 and the second connection assembly 244 are fixedly connected and cannot rotate relative to each other.

[0107] At this time, the second included angle β between the first part 210 and the second part 220 can be controlled by the rotation angle between the third connection assembly 246 and the second connection assembly 244. The second included angle β can enable the included angle change range between the first part 210 and the second part 220 to be 0° to 90°, and the maximum included angle can also become 120°, 150°, 180°, etc., and the present application does not limit this.

[0108] When the first connecting component 242 can rotate relative to the second connecting component 244, the connecting portion in the middle appearance shell 2444 can be arranged at the portion connected to the lower appearance shell 2464, and the lower shaft core may not be included in the third connecting component 246. For the specific structure, reference can be made to the structure when the third connecting component 246 can rotate relative to the second connecting component 244, which will not be elaborated here.

[0109] In addition, Figure 9 and Figure 10 Both take the shaft core being arranged in the first connecting component 242 and the third connecting component 246 and the shaft sleeve being arranged on the second connecting component 244 as examples to introduce the technical solutions of the embodiments of the present application. In some embodiments, the shaft core can be arranged on the second connecting component 244, and the shaft sleeves can be respectively arranged on the first connecting component 242 and the third connecting component 246. Moreover, the shaft sleeves can include connecting portions corresponding to the upper appearance shell 2424 and the lower appearance shell 2464. The shaft core can be arranged on the middle appearance shell 2444. The shaft core can be fixed to the middle appearance shell 2444 through the end of the shaft core, and the main body of the shaft core can extend into the hole formed by the shaft sleeve. Thus, when the shaft sleeve cooperates with the shaft core, it can rotate around the shaft core, driving the upper appearance shell 2424 and the lower appearance shell 2464 to rotate relative to the middle appearance shell 2444. At this time, the structures of the shaft core and the shaft sleeve can be, for example, similar to the structure of the first rotating shaft in the first rotating mechanism, which will not be elaborated here.

[0110] In the embodiments of the present application, at least part of the first connecting component 242 can be located on the side of the first part 210 close to the second rotating mechanism 240. When the protective cover opens to support the electronic device, the bottom of the first part 210 can be connected to the first connecting component 242, so that the bottom of the first part 210 can be at a higher position, and the support position of the electronic device 250 is also improved, reducing the occlusion of the keyboard settable area and facilitating the operation of the user. In one embodiment, the first connecting component 242 can be substantially in a plane with the first part 210 or the included angle between the two can be less than the first threshold.

[0111] At least part of the third connecting component 246 can also be located on the side of the second part 220 close to the second rotating mechanism 240. In this way, the area in front of the position where the keyboard is arranged on the second part 220 is enlarged, and the keyboard can be arranged at a position closer to the front of the second part 220, increasing the settable area of the keyboard and improving the user experience. In one embodiment, the third connecting component 246 can be substantially in a plane with the second part 220.

[0112] In addition, when the first connecting component 242 and the first part 210 are substantially in the same plane and the third connecting component 246 and the second part 220 are substantially in the same plane, the overall thickness of the second rotating mechanism 240 can be substantially uniform, for example, the difference in thickness from the electronic device 250 can be less than a preset threshold. In one embodiment, the thickness of the second rotating mechanism 240 can be the sum of the thicknesses of the electronic device 250, the first part 210, the second part 220, and the keyboard, so that when the entire protective cover protects the electronic device 250 and is in the closed state, the thickness of the entire device is substantially uniform.

[0113] Figure 9 Although it is shown in [reference] that the first connecting component 242 and the third connecting component 246 each rotate through two sets of rotating shafts (upper rotating shaft and lower rotating shaft), actually the number of the rotating shaft components is not limited and can be set according to requirements.

[0114] The first end of the second part 220 can be connected to the third connecting component 246 through the connecting plate 24642 of the third connecting component 246. When the protective cover is closed, the second part 220 can cover the display screen of the electronic device 250, thereby protecting the front of the electronic device 250. Refer to Figure 2 , a keyboard 222 can be provided on the second part 220, and a touchpad 224 can also be provided on the second part 220. Among them, the keyboard 222 and the touchpad 224 can be non-removable from the second part 220, or the keyboard 222 and the touchpad 224 can be detachably connected to the second part 220. Thus, when the user does not need to use the keyboard 222 and the touchpad 224, the weight of the protective cover can be reduced.

[0115] It should be understood that Figure 9 and Figure 10 the connecting plates 214 and 24642 are convexly provided on the first part 210 and the third connecting component 246. The convex connecting plates can also be provided on the first connecting component 242 or the second part 220. This application does not make any limitation in this regard.

[0116] The embodiment of the present application also provides a keyboard protective cover, including Figure 2 or Figure 3 the protective cover and the keyboard shown in [reference], and the keyboard is installed on the second part 220 of the protective cover.

[0117] The embodiment of the present application also provides an electronic device, including Figure 2 or Figure 3 the protective cover and the host shown in [reference], the keyboard is installed on the second part 220 of the protective cover, the back cover of the host is detachably connected to the first rotating mechanism 230, and the back cover of the host is supported on the first part 210.

[0118] In one embodiment, the host can be a device such as a tablet computer.

[0119] As described above, this is only the specific implementation manner of the present application. However, the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A protective cover, characterized in that, Comprising: A first part (210), a second part (220), a first rotating mechanism (230) and a second rotating mechanism (240), wherein the first rotating mechanism (230) and the second rotating mechanism (240) respectively include a first rotating shaft (234) and a second rotating shaft; The first part (210) and the second part (220) are rotatably connected through the second rotating mechanism (240); One end of the first part (210) away from the second rotating mechanism (240) is connected to the first rotating mechanism (230); The first rotating mechanism (230) is detachably connected to the electronic device, and the first part (210) can rotate relative to the electronic device through the first rotating mechanism (230); The second part (220) is used for arranging a keyboard (222); When the first part (210) and the second part (220) are folded in half, the first part (210) is used for covering a part of the back cover of the electronic device, and the second part (220) is used for covering the display screen of the electronic device.

2. The protective cover according to claim 1, wherein: The second rotating mechanism (240) includes a first connecting component (242), a second connecting component (244) and a third connecting component (246), the first connecting component (242) is fixedly connected to the first part (210), and the third connecting component (246) is fixedly connected to the second part (220); Wherein, the first connecting component (242) and the second connecting component (244) are rotatably connected and the third connecting component (246) and the second connecting component (244) are rotatably connected; or, the first connecting component (242) and the second connecting component (244) are rotatably connected; or, the third connecting component (246) and the second connecting component (244) are rotatably connected.

3. The protective case according to claim 2, characterized in that: At least part of the first connecting component (242) is located on the side of the first part (210) away from the first rotating mechanism (230); and / or, at least part of the third connecting component (246) is located on the side of the second part (220) close to the second rotating mechanism (240).

4. The protective cover according to any one of claims 3, characterized in that: The first connecting component (242) is in the same plane as the first part (210), and / or, the third connecting component (246) is in the same plane as the second part (220).

5. The protective cover according to any one of claims 2 to 4, characterized in that: The second rotating shaft includes an upper rotating shaft and a lower rotating shaft. The upper rotating shaft includes an upper shaft core (2426) and an upper shaft sleeve (24442), and the lower rotating shaft includes a lower shaft core (2466) and a lower shaft sleeve (24444). The first connecting component (242) includes the upper shaft core (2426), the third connecting component (246) includes the lower shaft core (2466), and the second connecting component (244) includes the upper shaft sleeve (24442) and the lower shaft sleeve (24444). Through the upper rotating shaft and the lower rotating shaft, both the first connecting component (242) and the third connecting component (246) are rotatably connected to the second connecting component (244).

6. The protective cover according to any one of claims 2 to 4, characterized in that: The second rotating shaft includes a lower rotating shaft. The lower rotating shaft includes a lower shaft core (2466) and a lower shaft sleeve (24444). The third connecting component (246) includes the lower shaft core (2466), and the second connecting component (244) includes the lower shaft sleeve (24444). Through the lower rotating shaft, the third connecting component (246) is rotatably connected to the second connecting component (244).

7. The protective cover according to any one of claims 1 to 6, characterized in that: The first rotating shaft (234) includes a first shaft core (2342) and a first shaft sleeve (2344). One of the first shaft core (2342) and the first shaft sleeve (2344) includes a first connecting portion (23444), and the first connecting portion (23444) is fixedly connected to the first part (210).

8. The protective cover according to any one of claims 1 to 7, characterized in that: The first rotating mechanism (230) is detachably connected to the electronic device by magnetic attraction force.

9. The protective cover according to any one of claims 1 to 8, characterized in that: The second rotating mechanism (240) includes a stylus receiving groove, and the stylus receiving groove 241 is used for setting a stylus.

10. The protective cover according to any one of claims 1 to 9, characterized in that: The first rotating mechanism (230) is used to make the range of the first angle between the first part (210) and the plane where the electronic device is located be 0° to 90°.

11. The protective cover according to any one of claims 1 to 10, characterized in that: The second rotating mechanism (240) is used to make the range of the second angle between the first part (210) and the second part (220) be 0° to 180°.

12. The protective cover according to claim 10 or 11, characterized in that: The first rotating mechanism (230) is used to make the magnitude of the first angle be steplessly adjusted and / or the second rotating mechanism (240) makes the magnitude of the second angle be steplessly adjusted.

13. The protective cover according to any one of claims 1 to 12, characterized in that: Both ends of the first rotating mechanism (230) include buckles, and the first rotating mechanism (230) is detachably connected to the side surface of the electronic device through the buckles.

14. The protective cover according to any one of claims 1 to 13, characterized in that: One side of the first rotating mechanism (230) in contact with the back cover of the electronic device includes a friction portion, and the first rotating mechanism (230) is detachably connected to the electronic device through the friction portion.

15. The protective cover according to any one of claims 1 to 14, characterized in that: The second part (220) is used for setting a touchpad (224).

16. A keyboard cover, characterized in that, It includes a protective cover and a keyboard as described in any one of claims 1 to 15, and the keyboard is installed on the second part (220) of the protective cover.

17. An electronic device, characterized in that, It includes a host and a protective cover as described in any one of claims 1 to 15 or a keyboard protective cover as described in claim 16.

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