External keyboard of tablet personal computer

Abstract

The invention relates to the technical field of tablet personal computers, in particular to an external keyboard of a tablet personal computer. Comprising a connecting plate assembly, a keyboard plate and two rotating shaft assemblies, the connecting plate assembly comprises a supporting plate and a mounting plate, and the connecting plate assembly further comprises a rotating piece connected with the supporting plate; two fixing pieces are arranged on the keyboard plate, and the two ends of the rotating piece are rotationally connected with the two fixing pieces; the rotating shaft assembly is arranged between the rotating part and the fixing part and comprises a rotating shaft, the rotating shaft comprises a rotating part and a positioning part, the rotating part is sleeved with a damping part, the rotating part is rotationally connected with the damping part, the damping part is fixedly arranged in the fixing part, the positioning part is connected with the rotating part in a clamped mode, the positioning part is sleeved with a torsional spring, and one end of the torsional spring is fixedly connected with the positioning part. The other end of the connecting plate assembly is fixedly connected with the damping piece so as to limit the rotating angle range of the connecting plate assembly relative to the keyboard plate from 0 degree to 80 degrees. The problems that in the prior art, the rotation range cannot be actively limited, and the use safety and stability of equipment are affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of tablet computers, in particular to an external keyboard for a tablet computer. Background Art

[0002] With the development of social economy and science and technology, tablet computers have become more popular. Traditional tablet computers all use touch screens to perform various operations, but in some specific places, such as when displaying products, connecting to a monitor to perform slide presentations, etc., a keyboard is required for operation.

[0003] The protective cover with keyboard is a peripheral device of tablet computer, which can protect the tablet computer in daily life and can be connected to the tablet computer to be used as a keyboard when needed. The protective cover with keyboard is usually provided with a keyboard plate and a connecting plate, which can rotate relative to each other, and the tablet computer is connected to the protective cover with keyboard through the connecting plate.

[0004] The rotation range of the mounting plate relative to the keyboard plate in the existing tablet computer external keyboard cannot be controlled, and it cannot stop and remain stable within the preset range autonomously. The tablet computer can only be supported at a fixed angle by bending the connecting plate assembly. This support method has a poor protective effect on the tablet computer, and it is easy to slip and fall during use, which affects the safety of the tablet computer. Summary of the invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide an external keyboard for a tablet computer to solve the problem in the prior art that the rotation range cannot be actively limited, thus affecting the safety and stability of the device.

[0006] The invention discloses an external keyboard for a tablet computer, comprising: a connecting plate assembly, a keyboard board and two rotating shaft assemblies, wherein the connecting plate assembly comprises a supporting plate and a mounting plate which are rotatably connected, and the connecting plate assembly further comprises a rotating member connected to the supporting plate; two fixing members are arranged at intervals on one side of the keyboard board, and opposite ends of the rotating member are respectively rotatably connected to the two fixing members to realize the rotatable connection between the connecting plate assembly and the keyboard board; the two rotating shaft assemblies are respectively arranged between the rotating member and the fixing member, the rotating shaft assembly comprises a rotating shaft, and the rotating shaft comprises a rotating part and a positioning part which are connected to each other, a damping member is sleeved on the rotating part, the rotating part is rotatably connected to the damping member, the damping member is fixedly arranged in the fixing member, the positioning part is snap-connected with the rotating part, a torsion spring is sleeved on the positioning part, one end of the torsion spring is fixedly connected to the positioning part, and the other end is fixedly connected to the damping member, so as to stabilize the connecting plate assembly at a preset angle when the connecting plate assembly rotates relative to the keyboard board; wherein the relative rotation range of the connecting plate assembly and the keyboard board through the rotating shaft assembly is 0° to 80°.

[0007] Optionally, the outer ring of the rotating part is also sleeved with a sleeve rotatably connected to the rotating part, the torsion spring is sleeved on the outer ring of the sleeve, the positioning part is provided with a stop platform, the stop platform is provided with a connecting disk on the side facing the sleeve, the connecting disk is engaged with the rotating shaft, the connecting disk is provided with a first connecting hole, the damping member is provided with a second connecting hole, one end of the torsion spring is engaged with the first connecting hole, and the other end is engaged with the second connecting hole.

[0008] Optionally, the rotating shaft assembly also includes a first positioning plate, which is arranged between the damping member and the sleeve, and the first positioning plate is engaged with the rotating shaft. The damping member is provided with a first limiting protrusion on the side facing the first positioning plate, and the first positioning plate is provided with a second limiting protrusion corresponding to the first limiting protrusion. The first limiting protrusion can be offset against the second limiting protrusion during the rotation of the rotating shaft relative to the damping member to limit the rotation angle of the rotating shaft.

[0009] Optionally, the rotating shaft assembly also includes a clamping gasket and a nut, the rotating part passes through one end of the damping member and is fixedly connected to the nut, the clamping gasket is arranged between the damping member and the nut, the clamping gasket is rotatably connected to the rotating part, and the opposite sides of the clamping gasket are respectively against the damping member and the nut.

[0010] Optionally, the rotating shaft assembly also includes a second positioning plate, which is arranged between the damping member and the clamping gasket, and the second positioning plate is engaged with the rotating part. The damping member is provided with a third limiting protrusion on the side facing the second positioning plate, and the second positioning plate is provided with a fourth limiting protrusion corresponding to the third limiting protrusion, and the fourth limiting protrusion can be abutted against the third limiting protrusion when the rotating part rotates relative to the damping member to limit the rotation angle of the rotating shaft; the damping member is provided with a plurality of positioning concave surfaces on the side facing the second positioning plate, and the second positioning plate is provided with a positioning convex surface corresponding to the positioning concave surface, and the positioning concave surface abuts against the positioning convex surface to ensure that the external keyboard of the tablet computer remains stable when it is buckled.

[0011] Optionally, a connecting platform is provided on a side of the rotating member facing the supporting plate, a connecting groove is provided on a side of the supporting plate facing away from the mounting plate, and the connecting platform is engaged and connected with the connecting groove.

[0012] Optionally, a plurality of first accommodating cavities are provided at intervals on the side of the connecting platform facing the connecting groove, a first magnetic member is provided in the first accommodating cavity, an iron sheet is provided on the side of the first accommodating cavity facing the supporting plate, and a second magnetic member or magnetically attractive metal corresponding to the first magnetic member is provided in the connecting groove.

[0013] Optionally, a plurality of second accommodating cavities are further provided on the connecting platform, and the second accommodating cavities are located between two adjacent first accommodating cavities, and openings are respectively provided on the inner walls on the opposite sides of the second accommodating cavities, and an elastic clip is provided in the second accommodating cavity, and the elastic clip is exposed through the opening, and an abutment groove corresponding to the elastic clip is provided in the connecting groove, and the elastic clip passes through the opening and abuts against the abutment groove.

[0014] Optionally, the connecting plate assembly also includes a connecting shaft and a connecting member, and mounting grooves are respectively provided on the side of the support plate facing away from the connecting groove and the side of the mounting plate facing the support plate. The connecting member is arranged in the mounting groove, and a rotating sleeve is provided on the connecting member, and the connecting shaft is rotatably connected to the rotating sleeve.

[0015] Optionally, a limit stopper is provided on the rotating sleeve, and the limit stoppers of the two connected rotating sleeves are arranged correspondingly, wherein one of the limit stoppers can be offset against another limit stopper during the rotation of the mounting plate relative to the support plate to limit the rotation range of the mounting plate relative to the support plate to 0° to 48°.

[0016] Compared with the prior art, the beneficial effect of the external keyboard of the tablet computer provided by the embodiment of the present invention is that the connecting plate assembly and the keyboard board are rotatably connected through the rotating shaft assembly, so that the user can operate the tablet computer through the keyboard. The rotating member is connected to the connecting plate assembly, the fixed member is connected to the keyboard board, and the opposite ends of the rotating member are respectively rotatably connected to the fixed member through the rotating shaft assembly, so as to realize the relative rotation of the connecting plate assembly and the keyboard board. Among them, the positioning part of the rotating shaft is connected to the snap-fitting connection set on the rotating member, the rotating part is rotatably connected to the damping member sleeve, and the damping member is connected to the fixed member, so when the rotating shaft rotates relative to the damping member, the damping member will not rotate with the rotating shaft, and because the rotating shaft is connected to the rotating member, it can drive the rotating member to rotate together, ensuring that the rotation relationship between the rotating member and the fixed member is realized. At the same time, because the damping member provides a damping force when the rotating shaft drives the rotating member to rotate, the rotating member can be relatively fixed with the fixed member when it follows the rotating shaft and rotates to a desired position relative to the damping member. Therefore, in actual use, the user can control the angle and position of the tablet computer by adjusting the connecting plate assembly, and when adjusted to the desired position, the tablet computer and the connecting plate assembly can remain fixed relative to the keyboard board, which is convenient for the user to adjust the tablet computer to the desired position and angle, so as to meet the different usage scenarios and needs of the user and facilitate the user's operation. A torsion spring is also provided on the shaft, one end of which is fixedly connected to the positioning part, and the other end is fixedly connected to the damping member. Because when the external keyboard of the tablet computer is buckled, the torsion spring is twisted and deformed to generate elastic force, so when the shaft rotates relative to the damping member, the torsion spring restores the elastic deformation and releases the elastic force, thereby helping the user to rotate the shaft to 80°, so that the connecting plate assembly and the keyboard board can be stabilized at a preset angle through the torsion spring during rotation, avoiding the risk of the tablet computer shaking and falling during use, and ensuring the stability and safety of the tablet computer during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 is a schematic diagram of an external keyboard for a tablet computer provided in an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of a connecting plate assembly provided by an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of a rotating shaft and a connecting member provided in an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a rotating member provided by an embodiment of the present invention;

[0022] Figure 5is a schematic diagram of a support plate provided in an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of a rotating member, a fixed member and a rotating shaft assembly provided in an embodiment of the present invention;

[0024] Figure 7 is a schematic diagram of a rotating shaft assembly provided by an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of a damping member, a first positioning plate, and a second positioning plate provided in an embodiment of the present invention;

[0026] Fig. 9 It is a schematic diagram of a damping member and a second positioning plate provided in an embodiment of the present invention.

[0027] The reference numerals in the figures are:

[0028] 1000, tablet computer external keyboard; 100, connecting plate assembly; 101, supporting plate; 1011, connecting groove; 10111, abutting groove; 102, mounting plate; 1021, mounting groove; 103, rotating member; 1031, connecting platform; 10311, first accommodating cavity; 10312, first magnetic member; 10313, second accommodating cavity; 10314, elastic buckle; 10315, opening; 1032, iron sheet; 104, rotating shaft; 105, connecting member; 1051, rotating sleeve; 1052, limit stopper; 200, keyboard plate; 201, fixed Fixed piece; 300, shaft assembly; 301, shaft; 3011, rotating part; 3012, positioning part; 3013, stop platform; 302, damping member; 3021, second connecting hole; 3022, first limiting protrusion; 3023, third limiting protrusion; 3024, positioning concave surface; 303, torsion spring; 304, bushing; 305, connecting plate; 3051, first connecting hole; 306, first positioning plate; 3061, second limiting protrusion; 307, second positioning plate; 3071, fourth limiting protrusion; 3072, positioning convex surface; 308, clamping gasket; 309, nut. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0030] The embodiment of the present invention provides a tablet computer external keyboard 1000, such as Figure 1 , 2As shown in Figure 6, the external keyboard 1000 of a tablet computer includes: a connecting plate assembly 100, a keyboard plate 200 and two rotating shaft assemblies 300, the connecting plate assembly 100 includes a supporting plate 101 and a mounting plate 102 that are rotatably connected, and the connecting plate assembly 100 also includes a rotating member 103 connected to the supporting plate 101; two fixing members 201 are arranged at intervals on one side of the keyboard plate 200, and the opposite ends of the rotating member 103 are respectively rotatably connected to the two fixing members 201 to realize the rotational connection between the connecting plate assembly 100 and the keyboard plate 200; the two rotating shaft assemblies 300 are respectively arranged between the rotating member 103 and the fixing member 201, and the rotating shaft assembly 300 includes a rotating shaft 301, The rotating shaft 301 includes a rotating part 3011 and a positioning part 3012 which are connected to each other. A damping member 302 is sleeved on the rotating part 3011. The rotating part 3011 is rotatably connected to the damping member 302. The damping member 302 is fixed in the fixing member 201. The positioning part 3012 is snap-connected with the rotating member 103. A torsion spring 303 is sleeved on the positioning part 3012. One end of the torsion spring 303 is fixedly connected to the rotating shaft 301, and the other end is fixedly connected to the damping member 302, so that the connecting plate assembly 100 can rotate relative to the keyboard panel 200 stably at a preset angle; wherein, the relative rotation range of the connecting plate assembly 100 and the keyboard panel 200 through the rotating shaft assembly 300 is 0° to 80°.

[0031] The connecting plate assembly 100 and the keyboard board 200 are rotatably connected through the rotating shaft assembly 300, so that the user can operate the tablet computer through the keyboard. The rotating member 103 is connected to the connecting plate assembly 100, and the fixed member 201 is connected to the keyboard board 200. The opposite ends of the rotating member 103 are respectively rotatably connected to the fixed member 201 through the rotating shaft assembly 300, so as to realize the relative rotation of the connecting plate assembly 100 and the keyboard board 200. Among them, the positioning part 3012 of the rotating shaft 301 is connected with the clamping connection set on the rotating member 103, the rotating part 3011 is connected with the damping member 302 sleeve, and the damping member 302 is connected with the fixed member 201, so when the rotating shaft 301 rotates relative to the damping member 302, the damping member 302 will not rotate with the rotating shaft 301, and because the rotating shaft 301 is connected with the rotating member 103, it can drive the rotating member 103 to rotate together, so as to ensure that the rotation relationship between the rotating member 103 and the fixed member 201 is realized. At the same time, the damping member 302 provides a damping force when the rotating shaft 301 drives the rotating member 103 to rotate, so that the rotating member 103 can remain relatively fixed with the fixing member 201 when following the rotating shaft 301 to rotate to a desired position relative to the damping member 302.

[0032] Therefore, in actual use, the user can control the angle and position of the tablet computer by adjusting the connecting plate assembly 100, and when adjusted to the desired position, the tablet computer and the connecting plate assembly 100 can remain fixed relative to the keyboard board 200, which is convenient for the user to adjust the tablet computer to the desired position and angle, so as to meet the different usage scenarios and needs of the user and facilitate the user's operation. A torsion spring 303 is also provided on the rotating shaft 301, one end of the torsion spring 303 is fixedly connected to the positioning part 3012, and the other end is fixedly connected to the damping member 302. Because when the tablet computer external keyboard 1000 is buckled, the torsion spring 303 is twisted and deformed to generate elastic force, so during the rotation of the rotating shaft 301 relative to the damping member 302, the torsion spring 303 restores the elastic deformation and releases the elastic force, thereby helping the user to rotate the rotating shaft 301 to 80°, so that the connecting plate assembly 100 and the keyboard board 200 can be stabilized at a preset angle through the torsion spring 303 during rotation, avoiding the risk of shaking and falling of the tablet computer during use, and ensuring the stability and safety of the tablet computer during use.

[0033] The rotating member 103 is connected to the connecting plate assembly 100, and the fixing member 201 is connected to the keyboard panel 200. The rotating member 103 and the fixing member 201 are connected in rotation via the rotating shaft assembly 300, so the connecting plate assembly 100 can rotate relative to the keyboard panel 200. One end of the rotating shaft 301 is connected in a snap-fit ​​manner to the rotating member 103, and the other end is connected in a damped rotation manner to the fixing member 201, thereby ensuring the stability of the rotational connection between the keyboard panel 200 and the connecting plate assembly 100.

[0034] Specifically, the damping member 302 in the rotating shaft assembly 300 can increase the friction of the rotating member 103 during the rotation process, thereby providing a damping effect when the rotating member 103 rotates relative to the fixed member 201. The movement or shaking of the rotating shaft 301 relative to the damping member 302 is avoided, and the stability of the rotating shaft assembly 300 and the experience of using the tablet computer external keyboard 1000 are improved.

[0035] It is easy to understand that a torsion spring 303 is provided on the rotating shaft 301, and one end of the torsion spring 303 is fixed to the rotating shaft 301, and the other end is fixed to the damping member 302. The rotating shaft 301 is rotatably connected to the damping member 302, so in the process of relative rotation of the rotating shaft 301 relative to the damping member 302, the torsion spring 303 can be twisted to produce elastic deformation. Therefore, once the user rotates the connecting plate assembly 100 relative to the keyboard panel 200 to a fixed range exceeding the maximum force range of the torsion spring 303, the rotation process of the keyboard panel 200 will become more difficult. At this time, the torsion spring 303 releases the elastic force in order to restore the elastic deformation, and drives the connecting plate assembly 100 to return to the preset rotation angle range, which can limit the rotation range of the rotating shaft 301, ensure that the connecting plate assembly 100 moves within the preset angle range, and avoid excessive rotation or incomplete rotation of the connecting plate assembly 100.

[0036] refer to Figure 6 and Figure 7 The outer ring of the rotating part 3011 is also sleeved with a sleeve 304 rotatably connected to the rotating part 3011, the torsion spring 303 is sleeved on the outer ring of the sleeve 304, the positioning part 3012 is provided with a stop platform 3013, the stop platform 3013 is provided with a connecting disk 305 on the side facing the sleeve 304, the connecting disk 305 is engaged with the rotating shaft 301, the connecting disk 305 is provided with a first connecting hole 3051, the damping member 302 is provided with a second connecting hole 3021, one end of the torsion spring 303 is engaged with the first connecting hole 3051, and the other end is engaged with the second connecting hole 3021.

[0037] The rotating part 3011 is provided with a sleeve 304 rotatably connected to the rotating shaft 301. The rotating part 3011 can rotate relative to the sleeve 304 during the rotation of the rotating shaft 301 relative to the damping member 302. The torsion spring 303 is arranged on the rotating part 3011 through the sleeve 304, which can avoid direct contact between the torsion spring 303 and the rotating part 3011, avoid the elastic deformation of the torsion spring 303 from affecting and wearing the rotating shaft 301, and extend the service life of the rotating shaft 301.

[0038] On the other hand, a first connection hole 3051 is provided on the connection disk 305, a second connection hole 3021 is provided on the damping member 302, one end of the torsion spring 303 is engaged with the first connection hole 3051, and the other end is engaged with the second connection hole 3021. The above arrangement makes the torsion spring 303 deform due to the rotation of the rotating shaft 301 relative to the damping member 302, so that the rotation range of the rotating shaft 301 is limited by the elastic force of the torsion spring 303.

[0039] refer to Figures 6 to 9 The rotating shaft assembly 300 also includes a first positioning plate 306, which is arranged between the damping member 302 and the sleeve 304. The first positioning plate 306 is engaged with the rotating shaft 301. The damping member 302 is provided with a first limiting protrusion 3022 on the side facing the first positioning plate 306. The first positioning plate 306 is provided with a second limiting protrusion 3061 corresponding to the first limiting protrusion 3022. The first limiting protrusion 3022 can be abutted against the second limiting protrusion 3061 during the rotation of the rotating shaft 301 relative to the damping member 302 to limit the rotation angle of the rotating shaft 301.

[0040] The first positioning plate 306 in the rotating shaft assembly 300 is arranged between the damping member 302 and the sleeve 304. At the same time, the first positioning plate 306 is engaged with the rotating shaft 301, so that the first positioning plate 306 can be stably and firmly installed in the required position, avoiding the first positioning plate 306 from rotating relative to the rotating shaft 301, and avoiding the damping effect of the damping member 302 from failing. A first limiting protrusion 3022 is provided on the side of the damping member 302 facing the first positioning plate 306, and a second limiting protrusion 3061 corresponding to the first limiting protrusion 3022 is provided on the first positioning plate 306, so that when the rotating part 3011 rotates relative to the damping member 302, the second limiting protrusion 3061 on the first positioning plate 306 engaged with the rotating shaft 301 can rotate along with the rotating shaft 301, and abut against the second limiting protrusion 3061 during the rotation process, so as to limit the rotation range of the rotating shaft 301 and prevent the rotating shaft 301 from rotating beyond the limit and causing influence and damage to the external keyboard of the tablet computer.

[0041] Among them, the first positioning plate 306 is snap-connected with the rotating shaft 301. On the one hand, it can enhance the structural strength of the rotating shaft assembly 300. On the other hand, it can ensure that the first limiting protrusion 3022 and the second limiting protrusion 3061 are normally abutted during the rotation of the rotating shaft 301 relative to the damping member 302, so as to ensure the normal realization of the limiting effect of the rotating shaft 301, prevent the movement of the rotating shaft 301 from exceeding the design range, and protect the structure of the tablet computer external keyboard 1000 from damage.

[0042] refer to Figure 6 and Figure 7 The rotating shaft assembly 300 also includes a clamping gasket 308 and a nut 309. The rotating portion 3011 passes through one end of the damping member 302 and is fixedly connected to the nut 309. The clamping gasket 308 is arranged between the damping member 302 and the nut 309. The clamping gasket 308 is rotatably connected to the rotating portion 3011, and the opposite sides of the clamping gasket 308 are respectively against the damping member 302 and the nut 309.

[0043] A nut 309 is fixedly connected to one end of the rotating part 3011 extending from the damping member 302. The nut 309 has the effect of tightening and limiting the damping member 302, so as to prevent the rotating part 3011 from loosening or shaking during the relative rotation of the damping member 302, or even slipping out of the damping member 302, so as to improve the stability of the rotating shaft assembly 300. A pressing gasket 308 is provided between the nut 309 and the damping member 302, and the two ends of the pressing gasket 308 are respectively against the damping member 302 and the nut 309. The pressing gasket 308 can apply pressure to the damping member 302 and the nut 309, respectively, so that the structural strength of the entire rotating shaft assembly 300 is higher, and the connection between the various components of the rotating shaft assembly 300 can be more stable. During actual use, after the shaft assembly 300 is connected to the rotating member 103 and the fixed member 201, since the position of the nut 309 relative to the rotating part 3011 is fixed, the force of the clamping gasket 308 on the nut 309 will react to the clamping gasket 308 itself. At the same time, the supporting force of the clamping gasket 308 on the damping member 302 and the reaction force of the nut 309 on the clamping gasket 308 can force the damping member 302 to be pressed toward the rotating member 103, so that the supporting effect between the damping member 302 and the rotating member 103 is tighter, thereby increasing the friction between the damping member 302 and the rotating member 103, and finally achieving the damping effect during the relative rotation of the rotating member 103 and the fixed member 201.

[0044] Among them, the compression gasket 308 can increase the pressure of the damping member 302, further improve the damping effect of the damping member 302, make the rotation process more stable, avoid the sudden movement or shaking of the rotating member 103, and improve the stability and user experience of the tablet computer external keyboard 1000.

[0045] It is easy to understand that the rotational connection design between the rotating part 3011 and the clamping gasket 308 can make the rotation process of the rotating shaft 301 smoother, reduce unnecessary friction, improve the smoothness of the rotation of the rotating shaft 301, and make it more convenient for users to operate the tablet computer external keyboard 1000.

[0046] During actual use, the pressure of the compression gasket 308 can be adjusted by adjusting the position of the nut 309 on the rotating part 3011, so as to adjust the pressure of the damping member 302, and finally achieve precise control of the damping force during rotation, meet the different usage requirements of users, and improve the flexibility and applicability of the tablet computer external keyboard 1000.

[0047] refer to Figures 6 to 9The rotating shaft assembly 300 also includes a second positioning disk 307, which is arranged between the damping member 302 and the pressing gasket 308. The second positioning disk 307 is engaged with the rotating portion 3011. A third limiting protrusion 3023 is provided on the side of the damping member 302 facing the second positioning disk 307. A fourth limiting protrusion 3071 corresponding to the third limiting protrusion 3023 is provided on the second positioning disk 307. The fourth limiting protrusion 3071 can abut against the third limiting protrusion 3023 when the rotating portion 3011 rotates relative to the damping member 302 to limit the rotation angle of the rotating shaft 301; a plurality of positioning concave surfaces 3024 are provided on the side of the damping member 302 facing the second positioning disk 307, and a positioning convex surface 3072 corresponding to the positioning concave surface 3024 is provided on the second positioning disk 307. The positioning concave surface 3024 abuts against the positioning convex surface 3072, so that the external keyboard 1000 of the tablet computer remains stable when buckled.

[0048] The second positioning plate 307 is arranged between the damping member 302 and the clamping gasket 308. The second positioning plate 307 is engaged and connected with the rotating part 3011. The second positioning plate 307 can rotate along with the damping member 302, so that the fourth limiting protrusion 3071 set on the second positioning plate 307 and the third limiting protrusion 3023 on the side of the damping member 302 toward the second positioning plate 307 can be offset during the rotation of the rotating shaft 301 relative to the damping member 302, thereby further enhancing the restriction on the rotation range of the rotating shaft 301 and avoiding the rotating shaft 301 from moving beyond the limit.

[0049] On the other hand, because the second positioning plate 307 can rotate with the rotating shaft 301, the second positioning plate 307 can rotate relative to the damping member 302, so the positioning convex surface 3072 provided on the second positioning plate 307 can abut against the positioning concave surface 3024 during the rotation relative to the damping member 302, thereby providing a damping force for the damping member 302. At the same time, because the positioning convex surface 3072 can abut against the positioning concave surface 3024, when the tablet computer external keyboard 1000 is in the buckled state, the second positioning plate 307 can limit and position the damping member, thereby preventing the tablet computer external keyboard 1000 from loosening, shaking or accidentally opening in the buckled state, so as to ensure the stability of the tablet computer external keyboard 1000 during use.

[0050] refer to Figure 2 and Figure 3 A connecting platform 1031 is provided on the side of the rotating member 103 facing the supporting plate 101 , and a connecting groove 1011 is provided on the side of the supporting plate 101 facing away from the mounting plate 102 . The connecting platform 1031 is engaged and connected with the connecting groove 1011 .

[0051] The connecting platform 1031 can be connected to the connecting groove 1011 by snapping, which can make the installation between the rotating member 103 and the support plate 101 more convenient, and can help to achieve quick positioning and assembly between the connecting platform 1031 and the connecting groove 1011, and make it easier to align and fix during the installation process, thereby simplifying the installation steps and improving the operability of the tablet computer external keyboard 1000.

[0052] Specifically, the connection platform 1031 and the connection groove 1011 are engaged and connected, so that the support plate 101 and the rotating member 103 can be easily and quickly connected or disconnected, thereby facilitating the connection and removal of the connection plate assembly 100 and the keyboard plate 200. This allows the user to flexibly disassemble and assemble the tablet computer external keyboard 1000, thereby improving the flexibility and applicability of the tablet computer external keyboard 1000.

[0053] refer to Figure 1 and Figure 4 A plurality of first accommodating cavities 10311 are provided at intervals on one side of the connecting platform 1031 facing the connecting groove 1011, a first magnetic member 10312 is provided in the first accommodating cavity 10311, an iron sheet 1032 is provided on one side of the first accommodating cavity 10311 facing the supporting plate 101, and a second magnetic member or a magnetically attractive metal corresponding to the first magnetic member 10312 is provided in the connecting groove 1011.

[0054] The connecting platform 1031 can be connected to the support plate 101 by snapping together with the connecting groove 1011. A first magnetic component 10312 is arranged in the first accommodating cavity 10311 of the connecting platform 1031, and a second magnetic component is arranged in the connecting groove 1011, so that the first magnetic component 10312 is magnetically connected to the second magnetic component, which can further improve the connection strength between the connecting platform 1031 and the connecting groove 1011, thereby enhancing the connection stability between the rotating component 103 and the support plate 101.

[0055] The magnetic connection between the first magnetic member 10312 and the second magnetic member can not only strengthen the connection strength between the connecting platform 1031 and the connecting slot 1011, but also make the installation between the rotating member 103 and the supporting plate 101 more convenient. Because the magnetic attraction between the first magnetic member 10312 and the second magnetic member can help the connecting platform 1031 and the connecting slot 1011 to be quickly positioned and assembled, and it is easier to align and fix during the installation process, which simplifies the installation steps and improves the operability of the external keyboard.

[0056] Specifically, the magnetic connection can increase the stability of the connection between the connection platform 1031 and the connection slot 1011. The magnetic attraction can help maintain the position between the support plate 101 and the rotating member 103, prevent accidental movement or swing, and ultimately enhance the stability of the external keyboard during use.

[0057] It should be noted that a second magnetic member can be arranged in the connection slot 1011 to be magnetically connected to the first magnetic member 10312 in the connection platform 1031, and a magnetically attractable metal that can be magnetically connected to the first magnetic member 10312 can also be arranged in the connection slot 1011. In addition to the above-mentioned arrangement, the entire connection slot 1011 can also be made of a magnetically attractable metal material, so that the first magnetic member 10312 in the connection platform 1031 is directly magnetically connected to the connection slot 1011. The magnetically attractable metal materials include: iron, nickel, cobalt and steel.

[0058] On the other hand, in this embodiment, an iron sheet 1032 is provided on the side of the first accommodating cavity 10311 facing the support plate 101 , and the iron sheet 1032 is used to absorb the first magnetic element to ensure that the first magnetic element can remain stable and firm in the first accommodating cavity 10311 .

[0059] refer to Figure 4 and Figure 5 A plurality of second accommodating cavities 10313 are further provided on the connecting platform 1031. The second accommodating cavities 10313 are located between two adjacent first accommodating cavities 10311. Openings 10315 are respectively provided on the inner walls on the opposite sides of the second accommodating cavities 10313. An elastic buckle 10314 is provided in the second accommodating cavities 10313. The elastic buckle 10314 is exposed through the opening 10315. An abutting groove 10111 corresponding to the elastic buckle 10314 is provided in the connecting groove 1011. The elastic buckle 10314 passes through the opening 10315 and abuts against the abutting groove 10111.

[0060] A second accommodating chamber 10313 is also provided between two adjacent first accommodating chambers 10311, and an elastic buckle 10314 is accommodated in the second accommodating chamber 10313, and the elastic buckle 10314 can be exposed through openings 10315 provided on the inner walls on both sides of the second accommodating chamber 10313. An abutting groove 10111 corresponding to the elastic buckle 10314 is provided in the connecting groove 1011, so when the connecting platform 1031 is engaged and connected with the connecting groove 1011, the abutting groove 10111 is used to abut against the elastic buckle 10314 to ensure that the elastic buckle 10314 moves within the normal elastic deformation range, and provide better limiting ability for the connection between the connecting platform 1031 and the connecting groove 1011, which can ensure the stability of the connection, effectively prevent accidental detachment or loosening between the accommodating chambers, and improve the reliability of the connection between the connecting platform 1031 and the support plate 101.

[0061] Among them, the elastic buckle 10314 and the abutment groove 10111 are matched and abutted against each other. This connection method can provide a certain escape space for the elastic buckle 10314 passing through the opening 10315, and the elastic buckle 10314 can be more tightly connected to the inner wall of the connecting groove 1011 through the abutment groove 10111, thereby improving the connection strength and connection stability between the connecting platform 1031 and the connecting groove 1011. At the same time, it can prevent the elastic buckle 10314 from moving beyond its own elastic deformation range, causing damage to the elastic buckle 10314. Therefore, the abutment groove 10111 can protect the elastic buckle 10314 to a certain extent and improve the service life of the elastic buckle 10314.

[0062] Specifically, the second accommodating cavity 10313 is located between two adjacent first accommodating cavities 10311. This layout can effectively utilize space, reduce the overall volume of the device, and make the device more compact.

[0063] refer to Figure 2 and Figure 3 The connecting plate assembly 100 also includes a connecting shaft and a connecting member 105. The side of the support plate 101 away from the connecting groove 1011 and the side of the mounting plate 102 facing the support plate 101 are respectively provided with mounting grooves 1021. The connecting member 105 is arranged in the mounting groove 1021. A rotating sleeve 1051 is provided on the connecting member 105. The connecting shaft is rotatably connected to the rotating sleeve 1051.

[0064] A plurality of connecting grooves 1011 are provided on the opposite sides of the mounting plate 102 and the support plate 101, and connecting members 105 are installed in the connecting grooves 1011. The connecting shaft passes through the connecting members 105 in sequence and is rotatably connected with the rotating shaft 104 of the connecting member 105, so as to connect the mounting plate 102 and the support plate 101. At the same time, the mounting plate 102 and the support plate 101 can be rotatably connected with each other through the rotatable connection between the rotating sleeve 1051 and the connecting shaft. Through the rotatable connection relationship between the connecting shaft and the connecting member 105, when the support plate 101 maintains the current position, the mounting plate 102 can rotate relative to the support plate 101, and when the mounting plate 102 maintains the current position, the support plate 101 can rotate relative to the mounting plate 102, which helps to improve the flexibility of the support plate 101 assembly. The above configuration method allows users to adjust the angle and position of the mounting plate 102 and / or the supporting plate 101 according to their own needs, thereby improving the flexibility and applicability of the tablet computer external keyboard 1000 when in use.

[0065] Specifically, the connection member 105 is rotatably connected to the rotating sleeve 1051, which can reduce direct contact between the mounting plate 102 and the supporting plate 101, avoid wear between the mounting plate 102 and the supporting plate 101, and extend the service life of the connecting plate assembly 100. The above arrangement helps to reduce friction and wear between the mounting plate 102 and the supporting plate 101 when the two rotate relative to each other, thereby improving the durability of the tablet computer external keyboard 1000.

[0066] refer to Figure 2 and Figure 3 A limit baffle 1052 is provided on the rotating sleeve 1051, and the limit baffles 1052 of the two connected rotating sleeves 1051 are correspondingly arranged, wherein one limit baffle 1052 can be abutted against another limit baffle 1052 during the rotation of the mounting plate 102 relative to the support plate 101, so as to limit the rotation range of the mounting plate 102 relative to the support plate 101 to 0° to 48°.

[0067] The mounting plate 102 and the support plate 101 in the connecting plate assembly 100 can be rotatably connected through the rotating shaft 104 and the connecting member 105. Among them, a limit stopper 1052 is provided on the rotating sleeve 1051, and the limit stoppers 1052 of two adjacent connecting members 105 are provided correspondingly, so that the mounting plate 102 can counteract each other during the rotation process relative to the support plate 101 to limit the rotation range between the mounting plate 102 and the support plate 101, so the rotation range of the mounting plate 102 relative to the support plate 101 is 0° to 48°. Therefore, in actual use, the user can adjust the relative angle and position between the mounting plate 102 and the support plate 101 by rotating the shaft 104 to achieve control of the angle and position of the tablet computer.

[0068] On the other hand, the user can easily adjust the angle and position of the mounting plate 102 relative to the support plate 101 through the rotational connection between the connector 105 and the connecting shaft to adapt to different usage scenarios and needs, thereby improving the flexibility and convenience of the tablet computer external keyboard 1000.

[0069] In this embodiment, the relative position and angle between the connecting plate assembly 100 and the keyboard plate 200 can be controlled by adjusting the rotating shaft assembly 300. Therefore, in actual use, the user can adjust the rotation range between the keyboard plate 200 and the connecting plate assembly 100 through the rotating shaft assembly 300, and adjust the rotation range between the mounting plate 102 and the support plate 101 through the rotating shaft 104 according to personal needs, and freely combine them to form a variety of usage states. Preferably, the first state is: when the mounting plate 102 rotates 48° relative to the support plate 101, and the support plate 101 rotates 80° relative to the keyboard plate 200, the connecting plate assembly 100 is separated from the keyboard plate 200, and the support plate 101 rotates 48° relative to the mounting plate 102. The second state, and the mounting plate 102 and the support plate 101 remain coplanar, and the support plate 101 is set parallel to the keyboard plate 200. The above setting method is convenient for users to adjust the tablet computer to the position and angle they need, so as to meet different usage scenarios and needs of users and facilitate user operation. To a certain extent, the usage of the tablet computer external keyboard 1000 is enriched, and the usage flexibility and application scope of the tablet computer external keyboard 1000 are improved.

[0070] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A tablet computer external keyboard, characterized in that: include: A connecting plate assembly, the connecting plate assembly comprising a supporting plate and a mounting plate that are rotatably connected, and the connecting plate assembly further comprising a rotating member connected to the supporting plate; A keyboard plate, wherein two fixing members are spaced apart on one side of the keyboard plate, and opposite ends of the rotating member are rotatably connected to the two fixing members respectively, so as to realize the rotatable connection between the connecting plate assembly and the keyboard plate; Two rotating shaft assemblies, the two rotating shaft assemblies are respectively arranged between the rotating member and the fixed member, the rotating shaft assembly includes a rotating shaft, the rotating shaft includes a rotating part and a positioning part connected to each other, a damping member is sleeved on the rotating part, the rotating part is rotatably connected to the damping member, the damping member is fixedly arranged in the fixed member, the positioning part is engaged with the rotating member, a torsion spring is sleeved on the positioning part, one end of the torsion spring is fixedly connected to the positioning part, and the other end is fixedly connected to the damping member, so as to stabilize the connection plate assembly at a preset angle when the connection plate assembly rotates relative to the keyboard plate; Wherein, the connection plate assembly can rotate relative to the keyboard plate in a range of 0° to 80° via the rotating shaft assembly.

2. The tablet computer external keyboard according to claim 1, characterized in that: The outer ring of the rotating part is also sleeved with a sleeve rotatably connected to the rotating part, the torsion spring is sleeved on the outer ring of the sleeve, the positioning part is provided with a stop platform, the stop platform is provided with a connecting disk on the side facing the sleeve, the connecting disk is engaged with the rotating shaft, the connecting disk is provided with a first connecting hole, the damping member is provided with a second connecting hole, one end of the torsion spring is engaged with the first connecting hole, and the other end is engaged with the second connecting hole.

3. The tablet computer external keyboard according to claim 2, characterized in that: The rotating shaft assembly also includes a first positioning plate, which is arranged between the damping member and the sleeve, and the first positioning plate is engaged with the rotating shaft. The damping member is provided with a first limiting protrusion on the side facing the first positioning plate, and the first positioning plate is provided with a second limiting protrusion corresponding to the first limiting protrusion. The first limiting protrusion can be abutted against the second limiting protrusion during the rotation of the rotating shaft relative to the damping member to limit the rotation angle of the rotating shaft.

4. The tablet computer external keyboard according to claim 3, characterized in that: The rotating shaft assembly also includes a clamping gasket and a nut. The rotating part passes through one end of the damping member and is fixedly connected to the nut. The clamping gasket is arranged between the damping member and the nut. The clamping gasket is rotatably connected to the rotating part, and the opposite sides of the clamping gasket are respectively against the damping member and the nut.

5. The tablet computer external keyboard according to claim 4, characterized in that: The rotating shaft assembly also includes a second positioning plate, which is arranged between the damping member and the clamping gasket, and the second positioning plate is engaged with the rotating part. The damping member is provided with a third limiting protrusion on the side facing the second positioning plate, and the second positioning plate is provided with a fourth limiting protrusion corresponding to the third limiting protrusion, and the fourth limiting protrusion can be abutted against the third limiting protrusion when the rotating part rotates relative to the damping member to limit the rotation angle of the rotating shaft; the damping member is provided with a plurality of positioning concave surfaces on the side facing the second positioning plate, and the second positioning plate is provided with a positioning convex surface corresponding to the positioning concave surface, and the positioning concave surface abuts against the positioning convex surface to keep the tablet computer stable when buckled.

6. The tablet computer external keyboard according to claim 1, characterized in that: A connecting platform is provided on one side of the rotating member facing the supporting plate, a connecting groove is provided on one side of the supporting plate facing away from the mounting plate, and the connecting platform is engaged and connected with the connecting groove.

7. The tablet computer external keyboard according to claim 6, characterized in that: A plurality of first accommodating cavities are provided at intervals on the side of the connecting platform facing the connecting groove, a first magnetic member is provided in the first accommodating cavity, an iron sheet is provided on the side of the first accommodating cavity facing the supporting plate, and a second magnetic member or magnetically attractive metal corresponding to the first magnetic member is provided in the connecting groove.

8. The tablet computer external keyboard according to claim 7, characterized in that: The connecting platform is also provided with a plurality of second accommodating cavities, wherein the second accommodating cavities are located between two adjacent first accommodating cavities, and openings are respectively provided on the inner walls on the opposite sides of the second accommodating cavities, and an elastic clip is provided in the second accommodating cavity, and the elastic clip is exposed through the opening, and an abutting groove corresponding to the elastic clip is provided in the connecting groove, and the elastic clip passes through the opening and abuts against the abutting groove.

9. The tablet computer external keyboard according to claim 6, characterized in that: The connecting plate assembly also includes a connecting shaft and a connecting member. The side of the support plate facing away from the connecting groove and the side of the mounting plate facing the support plate are respectively provided with mounting grooves. The connecting member is arranged in the mounting groove. A rotating sleeve is provided on the connecting member. The connecting shaft is rotatably connected to the rotating sleeve.

10. The tablet computer external keyboard according to claim 9, characterized in that: The rotating sleeve is provided with a limit baffle, and the limit baffles of the two connected rotating sleeves are arranged correspondingly, wherein one of the limit baffles can be offset against another limit baffle during the rotation of the mounting plate relative to the support plate to limit the rotation range of the mounting plate relative to the support plate to 0° to 48°.

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