External keyboard of tablet personal computer

Abstract

The utility model 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 utility model 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 and more popular. Traditional tablet computers all use touch screens to perform various operations, but in some specific situations, such as when displaying products, connecting to a monitor to perform slide presentations, etc., a keyboard is required for operation.

[0003] A keyboard case is a peripheral device for tablet computers. It protects the tablet in daily life and can also be connected to the tablet to serve as a keyboard when needed. A keyboard case typically includes a keyboard plate and a connecting plate that are rotatable relative to each other. The tablet connects to the keyboard case via the connecting plate.

[0004] The mounting plate in existing tablet external keyboards cannot be controlled to rotate relative to the keyboard panel. It cannot automatically stop and remain stable within a preset range. Instead, the tablet can only be supported at a fixed angle by bending the connecting plate assembly. This support method provides poor protection for the tablet, making it prone to slipping and falling during use, compromising the tablet's safety. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present invention is to provide an external keyboard for a tablet computer, so as 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 utility model discloses an external keyboard for a tablet computer, comprising: a connecting plate assembly, a keyboard panel and two rotating shaft assemblies, wherein the connecting plate assembly comprises a support plate and a mounting plate rotatably connected, and the connecting plate assembly further comprises a rotating member connected to the support plate; two fixing members are spaced apart on one side of the keyboard panel, and opposite ends of the rotating member are respectively rotatably connected to the two fixing members to achieve a rotating connection between the connecting plate assembly and the keyboard panel; the two rotating shaft assemblies are respectively arranged between the rotating member and the fixing member, the rotating shaft assembly comprises a rotating shaft, the rotating shaft comprises a rotating portion and a positioning portion connected to each other, a damping member is sleeved on the rotating portion, the rotating portion is rotatably connected to the damping member, the damping member is fixedly arranged in the fixing member, the positioning portion is engaged with the rotating member, and a torsion spring is sleeved on the positioning portion, one end of the torsion spring is fixedly connected to the positioning portion, 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 panel; wherein the connecting plate assembly rotates relative to the keyboard panel via the rotating shaft assembly within a range of 0° to 80°.

[0007] Optionally, the outer ring of the rotating part is also provided 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, a first connecting hole is provided on the connecting disk, and a second connecting hole is provided on the damping member, 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, and 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 and the positioning convex surface abut each other 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 support plate, and a connecting groove is provided on a side of the support plate facing away from the mounting plate, and the connecting platform is engaged 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 part is provided in the first accommodating cavity, an iron sheet is provided on the side of the first accommodating cavity facing the support plate, and a second magnetic part or magnetically attractive metal corresponding to the first magnetic part 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. Openings are respectively provided on the inner walls on both sides of the opposite sides of the second accommodating cavities. An elastic clip is provided in the second accommodating cavity, and the elastic clip is exposed through the opening. 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 further 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 block is provided on the rotating sleeve, and the limit blocks of the two connected rotating sleeves are correspondingly arranged, wherein one of the limit blocks can be offset against the other limit block 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 to the prior art, the external tablet keyboard provided by the present invention has the following advantages: the connecting plate assembly and the keyboard panel are rotatably connected via a hinge assembly, making it easier for users to operate the tablet computer via the keyboard. A rotating member is connected to the connecting plate assembly, and a fixed member is connected to the keyboard panel. The opposite ends of the rotating member are rotatably connected to the fixed member via the hinge assembly, thereby enabling relative rotation between the connecting plate assembly and the keyboard panel. The positioning portion of the hinge is engaged with a snap-fit ​​connection provided on the rotating member, the rotating portion is rotatably connected to a damping member sleeve, and the damping member is connected to the fixed member. Therefore, when the rotating shaft rotates relative to the damping member, the damping member does not rotate with the rotating shaft. Furthermore, the engagement between the rotating shaft and the rotating member allows the rotating member to rotate together, ensuring a rotational relationship between the rotating member and the fixed member. Furthermore, because the damping member provides a damping force when the rotating shaft drives the rotating member, the rotating member can remain relatively fixed to the fixed member when it rotates relative to the damping member to a desired position. Therefore, during actual use, the user can control the angle and position of the tablet computer by adjusting the connecting plate assembly. When the tablet computer is adjusted to the desired position, the tablet computer and the connecting plate assembly can remain fixed relative to the keyboard panel, making it convenient for the user to adjust the tablet computer to the desired position and angle to meet the user's different usage scenarios and needs and facilitate user operation. A torsion spring is also provided on the rotating shaft, one end of which is fixedly connected to the positioning portion, and the other end is fixedly connected to the damping member. Because the torsion spring is twisted and deformed to generate elastic force when the tablet computer's external keyboard is engaged, the torsion spring recovers its elastic deformation and releases the elastic force during the rotation of the rotating shaft relative to the damping member, thereby helping the user to rotate the rotating shaft to 80°, so that the torsion spring can stabilize the connection plate assembly and the keyboard panel at the preset angle 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 This is a schematic diagram of an external keyboard for a tablet computer provided by an embodiment of the present utility model;

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

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

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

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

[0023] Figure 6 It is a schematic diagram of the rotating member, the fixed member and the rotating shaft assembly provided by an embodiment of the present utility model;

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

[0025] Figure 8 Schematic diagram of a damping member, a first positioning plate, and a second positioning plate provided in an embodiment of the present utility model;

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

[0027] The reference numerals in the figures are:

[0028] 1000, tablet external keyboard; 100, connecting plate assembly; 101, support plate; 1011, connecting slot; 10111, abutting slot; 102, mounting plate; 1021, mounting slot; 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 disk; 3051, first connecting hole; 306, first positioning disk; 3061, second limiting protrusion; 307, second positioning disk; 3071, fourth limiting protrusion; 3072, positioning convex surface; 308, compression gasket; 309, nut. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. Now, in conjunction with the accompanying drawings, a detailed description of the preferred embodiments of the present utility model will be given.

[0030] The present invention provides an external keyboard 1000 for a tablet computer. Figure 1 、 2As shown in Figure 6, the tablet computer external keyboard 1000 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 spaced apart 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 achieve a rotating 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 engaged 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 panel 200 are rotatably connected via a hinge assembly 300, making it easier for users to operate the tablet computer via the keyboard. The rotating member 103 is connected to the connecting plate assembly 100, and the fixed member 201 is connected to the keyboard panel 200. The opposite ends of the rotating member 103 are rotatably connected to the fixed member 201 via the hinge assembly 300, thereby enabling relative rotation between the connecting plate assembly 100 and the keyboard panel 200. The positioning portion 3012 of the hinge 301 is engaged with a snap-fit ​​connection provided on the rotating member 103, and the rotating portion 3011 is rotatably connected to the damping member 302. The damping member 302 is also connected to the fixed member 201. Therefore, when the rotating shaft 301 rotates relative to the damping member 302, the damping member 302 does not rotate with the rotating shaft 301. Furthermore, due to the engaged connection between the rotating shaft 301 and the rotating member 103, the rotating member 103 can be driven to rotate together, ensuring that the rotational relationship between the rotating member 103 and the fixed member 201 is maintained. At the same time, the damping member 302 provides a damping force when the 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 shaft 301 to rotate to a desired position relative to the damping member 302.

[0032] Therefore, during actual use, the user can control the angle and position of the tablet computer by adjusting the connecting plate assembly 100. When the desired position is reached, the tablet computer and the connecting plate assembly 100 can remain fixed relative to the keyboard panel 200, making it easy for the user to adjust the tablet computer to the desired position and angle to meet the user's different usage scenarios and needs, and facilitating user 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 portion 3012, and the other end is fixedly connected to the damping member 302. Because the torsion spring 303 is twisted and deformed to generate elastic force when the tablet computer external keyboard 1000 is engaged, the torsion spring 303 recovers its elastic deformation and releases the elastic force during the rotation of the rotating shaft 301 relative to the damping member 302, thereby helping the user rotate the rotating shaft 301 to 80°. This allows the connecting plate assembly 100 and the keyboard panel 200 to be stabilized at the preset angle during rotation by the torsion spring 303, avoiding the risk of the tablet computer shaking and falling 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 fixed member 201 is connected to the keyboard panel 200. The rotating member 103 and the fixed member 201 are rotatably connected via the rotating shaft assembly 300, so that the connecting plate assembly 100 can rotate relative to the keyboard panel 200. One end of the rotating shaft 301 is engaged with the rotating member 103, and the other end is connected to the fixed member 201 with damped rotation, 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 hinge assembly 300 increases the friction of the rotating member 103 during rotation, thereby providing a damping effect when the rotating member 103 rotates relative to the fixed member 201. This prevents the hinge 301 from moving or shaking relative to the damping member 302, thereby improving the stability of the hinge assembly 300 and the user experience of the tablet computer external keyboard 1000.

[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 rotationally connected to the damping member 302, so during the 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 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 provided with a sleeve 304 rotatably connected to the rotating part 3011, and the torsion spring 303 is sleeved on the outer ring of the sleeve 304. A stop platform 3013 is provided on the positioning part 3012, and a connecting disk 305 is provided on the side of the stop platform 3013 facing the sleeve 304. The connecting disk 305 is engaged with the rotating shaft 301, and a first connecting hole 3051 is provided on the connecting disk 305. A second connecting hole 3021 is provided on the damping member 302. 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 that is 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, and 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, and 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. This arrangement causes the torsion spring 303 to deform due to the rotation of the rotating shaft 301 relative to the damping member 302, thereby limiting the rotation range of the rotating shaft 301 through 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 offset 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 shaft 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 counteract 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 engaged 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 part 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 part 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 the end of the rotating portion 3011 that extends out of the damping member 302. The nut 309 tightens and limits the damping member 302, preventing the rotating portion 3011 from loosening or shaking during rotation relative to the damping member 302, or even slipping out of the damping member 302, thereby improving the stability of the rotating shaft assembly 300. A compression washer 308 is provided between the nut 309 and the damping member 302. The two ends of the compression washer 308 respectively abut against the damping member 302 and the nut 309. The compression washer 308 can apply pressure to the damping member 302 and the nut 309, respectively, thereby increasing the structural strength of the entire rotating shaft assembly 300 and ensuring a more stable connection between the various components of the rotating shaft assembly 300. During actual use, after the shaft assembly 300 is connected to the rotating part 103 and the fixed part 201, because 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 part 103, so that the supporting effect between the damping member 302 and the rotating part 103 is tighter, thereby increasing the friction between the damping member 302 and the rotating part 103, and finally achieving the damping effect during the relative rotation of the rotating part 103 and the fixed part 201.

[0044] The compression gasket 308 can increase the pressure of the damping member 302, further enhance 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 rotating 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 to adjust the pressure of the damping member 302, thereby achieving precise control of the damping force during rotation, meeting the different usage needs of users, and improving the flexibility and applicability of the tablet computer external keyboard 1000.

[0047] refer to Figures 6 to 9The hinge assembly 300 also includes a second positioning plate 307, which is arranged between the damping member 302 and the pressing gasket 308, and the second positioning plate 307 is engaged with the rotating portion 3011. The damping member 302 is provided with a third limiting protrusion 3023 on the side facing the second positioning plate 307, and a fourth limiting protrusion 3071 corresponding to the third limiting protrusion 3023 is provided on the second positioning plate 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; the damping member 302 is provided with a plurality of positioning concave surfaces 3024 on the side facing the second positioning plate 307, and the second positioning plate 307 is provided with a positioning convex surface 3072 corresponding to the positioning concave surfaces 3024. The positioning concave surfaces 3024 abut against the positioning convex surfaces 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 with the rotating part 3011. The second positioning plate 307 can rotate along with the damping member 302, so 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 offset each other 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 over-limit movement of the rotating shaft 301.

[0049] On the other hand, because the second positioning plate 307 can rotate along with the rotating shaft 301, the second positioning plate 307 can rotate relative to the damping member 302. Therefore, 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. Furthermore, because the positioning convex surface 3072 can abut against the positioning concave surface 3024, when the tablet computer external keyboard 1000 is in the engaged state, the second positioning plate 307 can limit and position the damping member, preventing the tablet computer external keyboard 1000 from loosening, shaking, or accidentally opening when engaged, thereby ensuring 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 with the connecting groove 1011 .

[0051] The connecting platform 1031 can be connected to the connecting groove 1011 by snapping together, which can make the installation between the rotating part 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, allowing the support plate 101 and the rotating member 103 to be easily and quickly connected or disconnected, thereby facilitating the connection and removal of the connecting plate assembly 100 and the keyboard panel 200. This allows users to flexibly assemble and disassemble the tablet external keyboard 1000, improving the flexibility and applicability of the tablet external keyboard 1000.

[0053] refer to Figure 1 and Figure 4 A plurality of first accommodating cavities 10311 are provided on the side of the connecting platform 1031 facing the connecting groove 1011, and a first magnetic member 10312 is provided in the first accommodating cavity 10311. An iron sheet 1032 is provided on the side of the first accommodating cavity 10311 facing the support plate 101, and a second magnetic member or 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 through a snap-fit ​​connection with the connecting groove 1011. A first magnetic member 10312 is arranged in the first accommodating cavity 10311 of the connecting platform 1031, and a second magnetic member is arranged in the connecting groove 1011, so that the first magnetic member 10312 is magnetically connected to the second magnetic member, 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 member 103 and the support plate 101.

[0055] The magnetic connection between the first magnetic member 10312 and the second magnetic member not only strengthens the connection between the connecting platform 1031 and the connecting slot 1011, but also facilitates the installation of the rotating member 103 and the support plate 101. The magnetic attraction between the first magnetic member 10312 and the second magnetic member facilitates quick positioning and assembly between the connecting platform 1031 and the connecting slot 1011, making alignment and securing easier during installation. This simplifies the installation process and improves the operability of the external keyboard.

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

[0057] It should be noted that a second magnetic member can be disposed within the connection slot 1011 to magnetically connect to the first magnetic member 10312 in the connection platform 1031. Alternatively, a magnetically attractable metal material that can magnetically connect to the first magnetic member 10312 can be disposed within the connection slot 1011. In addition to the aforementioned configurations, the entire connection slot 1011 can be constructed of a magnetically attractable metal material, allowing the first magnetic member 10312 in the connection platform 1031 to directly magnetically connect to the connection slot 1011. Examples of 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 adsorb the first magnetic component to ensure that the first magnetic component 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 also 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 both sides of the opposite sides of the second accommodating cavities 10313. An elastic clip 10314 is provided in the second accommodating cavity 10313. The elastic clip 10314 is exposed through the opening 10315. An abutting groove 10111 corresponding to the elastic clip 10314 is provided in the connecting groove 1011. The elastic clip 10314 passes through the opening 10315 and abuts against the abutting groove 10111.

[0060] A second accommodating cavity 10313 is also provided between two adjacent first accommodating cavities 10311, and an elastic snap 10314 is accommodated in the second accommodating cavity 10313, and the elastic snap 10314 can be exposed through the openings 10315 provided on the inner walls on both sides of the second accommodating cavity 10313. Abutment grooves 10111 corresponding to the elastic snap 10314 are provided in the connecting groove 1011, so when the connecting platform 1031 is engaged and connected with the connecting groove 1011, the abutment grooves 10111 are used to abut against the elastic snap 10314 to ensure that the elastic snap 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 separation or loosening between the accommodating cavities, and improve the reliability of the connection between the connecting platform 1031 and the support plate 101.

[0061] The elastic snap 10314 and the abutment groove 10111 cooperate and abut against each other. This connection method provides a certain amount of space for the elastic snap 10314 to pass through the opening 10315. The elastic snap 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 stability between the connecting platform 1031 and the connecting groove 1011. At the same time, it can prevent the elastic snap 10314 from moving beyond its own elastic deformation range and causing damage to the elastic snap 10314. Therefore, the abutment groove 10111 can protect the elastic snap 10314 to a certain extent, extending the service life of the elastic snap 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 facing 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, and the connecting shaft is rotatably connected to the rotating sleeve 1051.

[0064] Several connecting grooves 1011 are provided on opposite sides of the mounting plate 102 and the support plate 101. Connectors 105 are installed in the connecting grooves 1011. Connecting shafts pass through the connecting shafts 105 and are rotatably connected to the rotating shafts 104 of the connecting shafts 105, thereby connecting the mounting plate 102 and the support plate 101. Simultaneously, the mounting plate 102 and the support plate 101 can be rotatably connected via the rotational connection between the rotating sleeves 1051 and the connecting shafts. The rotational connection between the connecting shafts and the connecting shafts 105 allows the mounting plate 102 to rotate relative to the support plate 101 while the support plate 101 remains in its current position. Alternatively, the support plate 101 can rotate relative to the mounting plate 102 while the mounting plate 102 remains in its current position, thereby improving 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 support plate 101 according to their needs, thereby improving the flexibility and applicability of the tablet computer external keyboard 1000 when used.

[0065] Specifically, the rotatable connection between connector 105 and rotatable sleeve 1051 reduces direct contact between mounting plate 102 and support plate 101, thus preventing wear between the mounting plate 102 and support plate 101 and extending the service life of connecting plate assembly 100. This arrangement helps reduce friction and wear between mounting plate 102 and support plate 101 during relative rotation, thereby improving the durability of tablet computer external keyboard 1000.

[0066] refer to Figure 2 and Figure 3 A limit block 1052 is provided on the rotating sleeve 1051, and the limit blocks 1052 of the two connected rotating sleeves 1051 are correspondingly arranged, wherein one limit block 1052 can be offset against the other limit block 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 support plate 101 in the connecting plate assembly 100 are rotatably connected via a rotating shaft 104 and a connecting member 105. A limit stop 1052 is provided on the rotating sleeve 1051, and the limit stops 1052 of two adjacent connecting members 105 are provided in a corresponding manner. Therefore, during the rotation of the mounting plate 102 relative to the support plate 101, they can counteract each other, thereby limiting the rotation range between the mounting plate 102 and the support plate 101. Therefore, 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, thereby achieving control over 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 panel 200 can be controlled by adjusting the hinge assembly 300. Therefore, in actual use, the user can adjust the rotation range between the keyboard panel 200 and the connecting plate assembly 100 through the hinge 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, there are: a first state in which the mounting plate 102 rotates 48° relative to the support plate 101 and the support plate 101 rotates 80° relative to the keyboard panel 200; a second state in which the connecting plate assembly 100 is separated from the keyboard panel 200 and the support plate 101 rotates 48° relative to the mounting plate 102; and a third state in which the mounting plate 102 and the support plate 101 remain coplanar and the support plate 101 is arranged parallel to the keyboard panel 200. The above setting method makes it convenient for the user to adjust the tablet computer to the position and angle they want, so as to meet the user's different usage scenarios and needs 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. Those skilled in the art may modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein; 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 external keyboard, characterized in that: include: A connecting plate assembly, the connecting plate assembly comprising a support plate and a mounting plate rotatably connected, the connecting plate assembly further comprising a rotating member connected to the support plate; A keyboard plate, wherein two fixing members are provided at intervals 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 rotational 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 portion and a positioning portion connected to each other, a damping member is sleeved on the rotating portion, the rotating portion is rotatably connected to the damping member, the damping member is fixedly arranged in the fixed member, the positioning portion is engaged with the rotating member, a torsion spring is sleeved on the positioning portion, one end of the torsion spring is fixedly connected to the positioning portion, 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 plate; Wherein, the connecting 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, wherein: The outer ring of the rotating part is also provided with a shaft sleeve rotatably connected to the rotating part, the torsion spring is sleeved on the outer ring of the shaft sleeve, the positioning part is provided with a stop platform, the stop platform is provided with a connecting disk on the side facing the shaft sleeve, the connecting disk is engaged with the rotating shaft, a first connecting hole is provided on the connecting disk, and a second connecting hole is provided on the damping member, 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, wherein: 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.

4. The tablet computer external keyboard according to claim 3, wherein: 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, wherein: The rotating shaft assembly also includes a second positioning plate, the second positioning plate is arranged between the damping member and the clamping gasket, 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, the second positioning plate is provided with a fourth limiting protrusion corresponding to the third limiting protrusion, 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, the second positioning plate is provided with a positioning convex surface corresponding to the positioning concave surface, the positioning concave surface and the positioning convex surface abut each other to keep the tablet computer stable when buckled.

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

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

8. The tablet computer external keyboard according to claim 7, wherein: The connecting platform is also provided with a plurality of second accommodating cavities, and the second accommodating cavities are located between two adjacent first accommodating cavities. Openings are respectively provided on the inner walls on both sides of the opposite sides of the second accommodating cavities. An elastic clip is provided in the second accommodating cavity, and the elastic clip is exposed through the opening. 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.

9. The tablet computer external keyboard according to claim 6, wherein: 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, and the connecting shaft is rotatably connected to the rotating sleeve.

10. The tablet computer external keyboard according to claim 9, wherein: A limit block is provided on the rotating sleeve, and the limit blocks of the two connected rotating sleeves are correspondingly arranged, wherein one of the limit blocks can be offset against the other limit block 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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