Lifting type biaxial hinge and terminal machine using the same

Abstract

In order to enable a single mechanism to correspond to terminal machines of different thicknesses, the present invention relates to a lifting double-axis hinge that connects a first shell and a second shell of a terminal machine so that they can be opened and closed, and comprises: a movable hinge shaft, which is installed on the first shell side; a fixed hinge shaft, which is installed on the second shell side; a first connecting member, which connects the movable hinge shaft so that the movable hinge shaft can move, and supports the fixed hinge shaft so that the fixed hinge shaft can rotate at a fixed position; a plurality of second connecting members, which support the movable hinge shaft so that the movable hinge shaft can rotate at a moving position, and connect the fixed hinge shaft. The invention provides a lifting double-axis hinge, which is provided between the movable hinge axis and the fixed hinge axis, and the first displacement rotating axis and the second displacement rotating axis are connected between the movable hinge axis and the fixed hinge axis, so that the first displacement rotating axis and the second displacement rotating axis can move; a plurality of third connecting members, which respectively connect the fixed hinge axis and the first displacement rotating axis, the first displacement rotating axis and the second displacement rotating axis, and the second displacement rotating axis and the movable hinge axis, so as to maintain the wheelbase between them unchanged; and a synchronous rotation mechanism, which is respectively provided between the movable hinge axis and the fixed hinge axis, and the first displacement rotating axis and the second displacement rotating axis. The lifting double-axis hinge of the invention can change the wheelbase between the movable hinge axis and the fixed hinge axis.

Description

Technical Field

[0001] The present invention relates to a lifting biaxial hinge suitable for a terminal machine, and a terminal machine using the lifting biaxial hinge; in particular, it relates to a lifting biaxial hinge suitable for a dual-screen foldable tablet computer equipped with a keyboard, and a dual-screen foldable tablet computer equipped with a keyboard using the lifting biaxial hinge. Background Art

[0002] The known technologies of biaxial hinges used in terminal devices such as foldable notebook computers, electronic dictionaries, and PDAs are described in the following Patent Documents 1 and 2.

[0003] [Previous Technical Literature]

[0004] [Patent Literature]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2018-10422

[0006] [Patent Document 2] Japanese Patent Application Publication No. 2019-35474 Summary of the invention

[0007] [Problems to be solved by the invention]

[0008] The above-mentioned known double-axis hinge can make the first shell with the keyboard part and the second shell with the display part open and close freely within a range of 360 degrees and stop at any angle, but it cannot adjust the wheelbase between the first hinge axis and the second hinge axis constituting the double-axis hinge.

[0009] In recent years, a terminal device has been developed, which is a dual-screen foldable tablet computer equipped with a keyboard. In order to improve the convenience of this terminal device, the keyboard is equipped independently. When the user needs, the keyboard can be placed on the first shell and used as a general notebook computer equipped with a keyboard; when the user needs to move, the keyboard can be sandwiched between the first shell and the second shell for easy carrying.

[0010] In this type of terminal, since the presence or absence of a keyboard will affect the thickness of the terminal, there is an urgent need to develop a dual-axis hinge that can adjust the wheelbase between the first hinge axis and the second hinge axis and can be used for both keyboard / no-keyboard purposes with only one type.

[0011] Therefore, the object of the present invention is to provide a lifting biaxial hinge which will not interfere with the user's opening and closing operations of the first shell and the second shell even if the keyboard is placed on the first upper surface of the terminal device, and a terminal device using the lifting biaxial hinge.

[0012]

Means for solving the problem

[0013] In order to achieve the above-mentioned purpose, the lifting double-axis hinge described in claim 1 of the present invention comprises: a movable hinge axis, which is installed on the first shell side; a fixed hinge axis, which is installed on the second shell side; a first connecting member, which connects the movable hinge axis so that the movable hinge axis can move, and supports the fixed hinge axis so that the fixed hinge axis can rotate at a fixed position; a plurality of second connecting members, which support the movable hinge axis so that the movable hinge axis can rotate at a moving position, and connect the fixed hinge axis so that the fixed hinge axis can rotate at a fixed position The movable hinge shaft and the fixed hinge shaft are connected to the first displacement shaft and the second displacement shaft, respectively, so that the first displacement shaft and the second displacement shaft can be moved; a plurality of third connecting members, which respectively connect the fixed hinge shaft and the first displacement shaft, the first displacement shaft and the second displacement shaft, the second displacement shaft and the movable hinge shaft, so as to maintain the wheelbase therebetween unchanged; and a synchronous rotation mechanism, which is respectively arranged between the movable hinge shaft and the fixed hinge shaft and the first displacement shaft and the second displacement shaft.

[0014] According to the lifting double-axis hinge described in claim 2 of the present invention, the first connecting component is provided with a long guide hole and a first bearing hole, the movable hinge shaft is inserted into the long guide hole so that the movable hinge shaft can slide; the fixed hinge shaft is borne by the first bearing hole so that the fixed hinge shaft can rotate.

[0015] Next, according to the lifting double-axis hinge described in claim 3 of the present invention, the second connecting component is provided with a curved long guide hole and a second bearing hole, and the movable hinge axis, the first displacement rotating axis and the second displacement rotating axis are inserted into the curved long guide hole to enable them to slide; the second bearing hole bears the fixed hinge axis.

[0016] Furthermore, the lifting type dual-axis hinge according to claim 4 of the present invention further comprises a wheelbase stabilizing mechanism, which is composed of a pair of hook-shaped components, the pair of hook-shaped components are mounted on the first displacement shaft to be rotatable and engage the fixed hinge shaft.

[0017] Then, according to the lifting double-axis hinge described in claim 5 of the present invention, the synchronous rotation mechanism is formed by gears meshing with each other, and the gears are arranged on the movable hinge axis, the fixed hinge axis, the first displacement shaft, and the second displacement shaft.

[0018] In addition, the lifting double-axis hinge according to claim 6 of the present invention further comprises a friction torque generating mechanism, which is respectively arranged on the movable hinge axis, the fixed hinge axis, the first displacement rotating axis, and the second displacement rotating axis.

[0019] Furthermore, according to the lifting double-axis hinge described in claim 7 of the present invention, the friction torque generating mechanism includes a friction gasket and a disc spring, which are respectively inserted through the movable hinge shaft and the fixed hinge shaft and the first displacement shaft and the second displacement shaft.

[0020] Next, the invention described in claim 8 of the present invention is a terminal device using the above-mentioned lifting type two-axis hinges.

[0021] [Effects of the invention]

[0022] According to the invention described in claim 1, when the lifting dual-axis hinge of the present invention is used in a dual-screen folding tablet computer which is one of the terminal machines, when the second shell is opened relative to the first shell, the fixed hinge axis will start to rotate, and the opening operation of the second shell is realized through the second bracket. At the same time, the rotation of the fixed hinge axis is transmitted from the first displacement shaft to the second displacement shaft and even the movable hinge shaft through the synchronous rotation mechanism, so that the movable hinge shaft rotates in the opposite direction to the fixed hinge shaft, thereby making the first shell open in the opposite opening direction to the second shell. In this way, the opening and closing angles of the first shell and the second shell can be opened and closed in the range of 0 to 90 degrees, 90 to 180 degrees, or even 180 to 360 degrees.

[0023] According to the invention described in claim 2, the fixed hinge shaft is supported by the first bearing hole of the first connecting member and can be rotated at a fixed position. In contrast, the movable hinge shaft can move in a sliding manner in the long guide hole, thereby changing the wheelbase between the fixed hinge shaft and the movable hinge shaft.

[0024] According to the invention described in claim 3, the second connecting component is characterized in that it is provided with a curved long guide hole and a second bearing hole, and the movable hinge shaft, the first displacement shaft and the second displacement shaft are inserted into the curved long guide hole to enable them to slide; the second bearing hole bears the fixed hinge shaft.

[0025] According to the invention described in claim 4, the wheelbase stabilization mechanism can more reliably prevent the wheelbase between the movable hinge axis and the fixed hinge axis from changing due to the hook-shaped member.

[0026] According to the invention described in claim 5, the synchronous rotation mechanism composed of gears can more reliably transmit the rotational driving force from the fixed hinge shaft to the first displacement shaft and from the second displacement shaft to the movable hinge shaft, and can also transmit the rotational driving force in the opposite direction.

[0027] According to the invention described in claims 6 and 7, the movable hinge axis and the fixed hinge axis will respectively generate friction torque when rotating with the first displacement shaft and the second displacement shaft, so that the first shell and the second shell can stop at any angle during the opening and closing operation, and even if the display part located on the second shell side is touched with a finger or a pen, the opening and closing angle remains unchanged.

[0028] According to the invention described in claim 8, it is possible to provide a terminal device using the lifting type two-axis hinge having the above-mentioned characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of a dual-screen foldable tablet computer, which is one example of a terminal device using the lifting dual-axis hinge of the present invention, (a) is a three-dimensional view of it in a closed state, (b) is a side view of it, and (c) is a side view of it when it is opened to 90 degrees.

[0030] Figure 2 It is a three-dimensional diagram of the lifting double-axis hinge of the present invention.

[0031] Figure 3 for Figure 2 A partial sectional plan view of a lifting biaxial hinge is shown.

[0032] Figure 4 for Figure 2 An exploded perspective view of the lifting double-axis hinge shown.

[0033] Figure 5 for Figure 3 and Figure 4 The schematic diagram of the movable hinge axis and the fixed hinge axis of the lifting double-axis hinge shown in the figure, (a) is its front view, and (b) is its plan view.

[0034] Figure 6 for Figure 3 and Figure 4 A three-dimensional view of the first connecting member of the lifting biaxial hinge shown.

[0035] Figure 7 for Figure 3 and Figure 4 The schematic diagram of the first displacement axis of the lifting double-axis hinge shown in the figure, (a) is its front view, and (b) is its plan view.

[0036] Figure 8 for Figure 3 and Figure 4 The schematic diagram of the second displacement axis of the lifting double-axis hinge shown in the figure, (a) is its front view, and (b) is its plan view.

[0037] Fig. 9 for Figure 3 and Figure 4 The schematic diagram of the second connecting member of the lifting double-axis hinge shown is as follows: (a) is a stereoscopic view of the 2A connecting member and the 2B connecting member, and (b) is a stereoscopic view of the 2C connecting member.

[0038] Fig.10 for Figure 3 and Figure 4 A three-dimensional view of the third connecting member of the lifting double-axis hinge shown.

[0039] Fig.11 for Figure 3 and Figure 4 The schematic diagram of the wheelbase stabilization mechanism of the lifting double-axis hinge shown is, (a) is a three-dimensional diagram of its hook-shaped component, and (b) is a partial sectional side view of the mechanism in the assembled state.

[0040] Fig.12 for Figure 3 and Figure 4 The action illustration diagram of the lifting double-axis hinge shown in the figure shows that (a) the first shell and the second shell are in a closed state of 0 degrees, (b) shows the first shell and the second shell are in an open state of 80 degrees, (c) shows the first shell and the second shell are in an open state of 180 degrees, and (d) shows the first shell and the second shell are in an open state of 360 degrees.

[0041] Fig.13 Schematic diagram of another example of a terminal device using the lifting dual-axis hinge of the present invention, (a) is a three-dimensional view of the terminal device in a closed state, (b) is a side view of the terminal device, and (c) is a side view of the terminal device in a 90-degree open state.

[0042] Fig.14 The lifting double-axis hinge of the present invention is used for Fig.13 The operation explanation diagram of the terminal machine shown in the figure shows that (a) the first shell and the second shell are in a closed state of 0 degrees, (b) shows the first shell and the second shell are in an open state of 80 degrees, and (c) shows the first shell and the second shell are in an open state of 180 degrees. DETAILED DESCRIPTION

[0043] The following is a description of the application of the lifting type biaxial hinge of the present invention to a terminal device, that is, a dual-screen foldable tablet computer composed of a first shell and a second shell. However, the terminal device according to the present invention may also include a terminal device in which the thickness between the first shell and the second shell varies, such as a notebook or laptop personal computer, an electronic dictionary, a PDA, and the like. In addition, the present invention may also be used for various machines or containers that can be opened and closed freely by connecting the first shell and the second shell with a lifting type biaxial hinge.

[0044] (Example 1)

[0045] Embodiment 1 is a terminal device 1 according to the present invention, such as Figure 1 As shown, it is a dual-screen foldable tablet computer, which is composed of a first housing 2 having a first display portion 2a and a second housing 3 having a second display portion 3a. Fig.13 As shown, an independent keyboard 21 is also provided, and the keyboard 21 can be clamped between the first shell 2 and the second shell 3 for easy carrying.

[0046] The lifting type biaxial hinges 4, 4 of the present invention are assembled in pairs at the rear ends of the first housing 2 and the second housing 3 at a predetermined interval, so that the first housing 2 and the second housing 3 can be smoothly closed even when the keyboard 21 is sandwiched between them. The first housing 2 and the second housing 3 are connected to each other by the lifting type biaxial hinges 4, 4, and can be freely opened and closed relative to each other. That is, the terminal device 1 can open the first housing 2 and the second housing 3 from the closed state of 0 degrees to the fully opened state of 90 degrees, 180 degrees, 270 degrees to 360 degrees through the lifting type biaxial hinges 4, 4, and can also be closed from 360 degrees and return to the closed state of 0 degrees through 270 degrees, 180 degrees, and 90 degrees. Moreover, even if the first housing 2 and the second housing 3 are closed in the state where the keyboard 21 is sandwiched between the first housing 2 and the second housing 3, they can be freely opened and closed within the range of 0 degrees to 360 degrees.

[0047] The first display unit 2a and the second display unit 3a, in addition to having a display function for displaying the calculated image, also have a touch function, and can perform input operations by touching the screen with a finger or other medium. Since the lifting double-axis hinges 4, 4 in this embodiment have the same structure and are assembled in pairs on the left and right, the following description will be based on Figure 1 In (a), the lifting type biaxial hinge 4 installed on the right side is mainly used, and the description of the lifting type biaxial hinge installed on the left side is omitted.

[0048] Especially Figures 2 to 4 As shown, the lifting double-axis hinge 4 is housed in the outer shell part A, and has a partial movable hinge axis 6 and a partial fixed hinge axis 7 (as described later), and the first bracket 5 and the second bracket 8 installed on the movable hinge axis 6 and the fixed hinge axis 7 protrude outward.

[0049] Figures 3 to 11The specific structure of the lifting double-axis hinge 4 is shown. As shown in the figures, the lifting double-axis hinge 4 is composed of a movable hinge shaft 6, a fixed hinge shaft 7, a first connecting member 9, a 2A connecting member 10, a 2B connecting member 11, a 2C connecting member 12, a third connecting member 15, a wheelbase stabilization mechanism B and a synchronous rotation mechanism C. Among them, the movable hinge shaft 6 is arranged on the side of the first shell 2 having the first display part 2a through the first bracket 5; the fixed hinge shaft 7 is arranged on the side of the second shell 3 having the second display part 3a through the second bracket 8; the first connecting member 9 includes a long guide hole 9a for bearing the movable hinge shaft 6 so that it can move, and a first bearing hole 9b for supporting the fixed hinge shaft 7 so that it can rotate at a fixed position; the three sheet-like members 2A connecting member 10, 2B connecting member 11, and 2C connecting member 12 respectively have a curved long guide hole 10a, 10b for bearing the movable hinge shaft 6 so that it can move and rotate. 1a, 12a, and second bearing holes 10b, 11b, 12b for fixing the hinge shaft 7 with a bearing so that it can rotate in a fixed position; third connecting members 15, 15, 15... totaling 7 pieces, respectively connecting the movable hinge shaft 6 and the fixed hinge shaft 7 with the first displacement shaft 13 and the second displacement shaft 14, so as to maintain the wheelbase between them unchanged; the wheelbase stabilizing mechanism B is arranged between the fixed hinge shaft 7 and the first displacement shaft 13; the synchronous rotation mechanism C is arranged between the movable hinge shaft 6 and the fixed hinge shaft 7 and the first displacement shaft 13 and the second displacement shaft 14.

[0050] Furthermore, each movable hinge shaft 6 and fixed hinge shaft 7 and the first displacement shaft and the second displacement shaft are provided with a first friction torque generating mechanism F1 and a second friction torque generating mechanism F2 and a third friction torque generating mechanism F3 and a fourth friction torque generating mechanism F4, respectively. In the claims of this case, the friction torque generating mechanism F is a general term for the first friction torque generating mechanism F1, the second friction torque generating mechanism F2, the third friction torque generating mechanism F3 and the fourth friction torque generating mechanism F4. In addition, the number of these friction torque generating mechanisms F1 to F4 is not limited to the number disclosed in the embodiment. That is, these friction torque generating mechanisms F1 to F4 may also be provided only on a part of the shafts among the movable hinge shaft 6, the fixed hinge shaft 7, the first displacement shaft and the second displacement shaft.

[0051] In addition, in the following description, the movable hinge shaft 6, the fixed hinge shaft 7, the first displacement shaft 13 and the second displacement shaft 14 are collectively referred to as "shafts".

[0052] First, especially Figure 5As shown, the movable hinge shaft 6 is provided in sequence from one end side: a flat assembly portion 6b having a pair of flange portions 6a, 6a and formed between the pair of flange portions 6a, 6a; a first small diameter portion 6c which is provided in succession to the flat assembly portion 6b and has a circular cross-section; a first gear portion 6d which is provided in succession to the first small diameter portion 6c and has a diameter larger than that of the first small diameter portion 6c; a second small diameter portion 6e which is provided in succession to the first gear portion 6d; a third small diameter portion 6f which is provided in succession to the second small diameter portion 6e; a fourth small diameter portion 6g which is provided in succession to the third small diameter portion 6f; a deformable shaft portion 6h which is provided from the approximately middle portion of the fourth small diameter portion 6g; and an external threaded portion 6i which is provided on one end side of the deformable shaft portion 6h.

[0053] Among them, the flat assembly part 6b of the movable hinge shaft 6 is provided with a plurality of assembly holes 6k, 6k..., and the first bracket 5 can be fixed to the flat assembly part 6b by passing the assembly screws 6m, 6m... through these assembly holes 6k, 6k... In addition, the first bracket 5 is assembled to the rear end of the first shell 2, which is not fully illustrated in the drawings because it is a well-known structure. In the first bracket 5, the assembly holes 5a, 5a are used when the first bracket 5 is assembled to the movable hinge shaft 6 by the assembly screws 6m, 6m...; the assembly holes 5b, 5b are used when the first bracket 5 is assembled to the first shell 2 by the assembly screws not shown in the figure; the components marked 5c, 5c are spacers.

[0054] The structure of the fixed hinge shaft 7 is the same as that of the movable hinge shaft 6. Figure 5 As shown in the numbers in the brackets, the fixed hinge shaft 7 is provided in sequence from one end side: a flat assembly portion 7b having flange portions 7a, 7a and formed between the pair of flange portions 7a, 7a; a first small diameter portion 7c which is provided following the flat assembly portion 7b and has a circular cross-section; a second gear portion 7d which is provided following the first small diameter portion 7c and has a diameter larger than that of the first small diameter portion 7c; a second small diameter portion 7e which is provided following the second gear portion 7d; a third small diameter portion 7f which is provided following the second small diameter portion 7e; a fourth small diameter portion 7g which is provided following the third small diameter portion 7f; a deformed shaft portion 7h which is provided from the approximately middle portion of the fourth small diameter portion 7g toward the end; and an external threaded portion 7i which is provided on one end side of the deformed shaft portion 7h.

[0055] The flat assembly part 7b for fixing the hinge shaft 7 is fixed to the flat assembly part 7b by inserting assembly screws 7m, 7m, ... through a plurality of assembly holes 8a, 8a, ... provided on the second bracket 8. In addition, the second bracket 8 is assembled to the rear end of the second housing 3, which is a well-known structure and is not fully illustrated in the drawings. The assembly holes 8b, 8b in the second bracket 8 are used when assembling to the second housing 3 by assembly screws not shown in the drawings.

[0056] Then, especially Figure 4 and Figure 6 As shown, the first connecting member 9 is a plate-like object with a slightly elliptical plane, and one end side of the first connecting member 9 is provided with a long guide hole 9a for bearing the flange portion 6a of the movable hinge shaft 6 so that it can move, and a first bearing hole 9b opposite to the long guide hole 9a, for bearing the flange portion 7a of the fixed hinge shaft 7 so that it can rotate at a fixed position. Figure 4 As shown, the other end of the first connection member 9 is provided with an insertion protrusion 9c which can be inserted into the opening a of the outer shell A and also functions as a cover of the outer shell A.

[0057] The first displacement shaft 13 is particularly Figure 4 and Figure 7 As shown, the following structures are provided in sequence from one end side: a first small diameter portion 13a having an annular groove 13b; a third gear portion 13c provided in succession to the first small diameter portion 13a; a second small diameter portion 13d provided in succession to the third gear portion 13c; a flange portion 13e provided in succession to the second small diameter portion 13d and having a slightly larger diameter; a third small diameter portion 13f provided in succession to the flange portion 13e and having a slightly longer length; a deformed shaft portion 13g provided on the third small diameter portion 13f; and an external threaded portion 13h provided on the deformed shaft portion 13g.

[0058] The second displacement shaft 14 is particularly Figure 4 and Figure 8 As shown, the following structures are provided in sequence from one end side: a fourth gear portion 14a; a first small diameter portion 14b provided in succession to the fourth gear portion 14a; a flange portion 14c provided in succession to the first small diameter portion 14b and having a slightly larger diameter; a second small diameter portion 14d provided in succession to the flange portion 14c and having a slightly longer length; a deformed shaft portion 14e provided on the second small diameter portion 14d; and an external threaded portion 14f provided on the deformed shaft portion 14e.

[0059] Then, especially Figure 3 , Figure 4 and Fig. 9 As shown, the second connecting member is composed of three sheet-like members, namely, the second connecting member 10, the second connecting member 11 and the second connecting member 12, which are arranged inside the first connecting member 9 at a specific interval, that is, inside the outer shell A. Fig. 9 As shown in (a), the 2A connecting member 10 and the 2B connecting member 11 have the same structure, while the 2C connecting member 12 is as shown in Figure 4 and Fig. 9As shown in (b), an internal threaded hole 12c for installing an assembly rod 20 is also provided. Since the assembly rod 20 is used to fix the lifting type biaxial hinge 4 to the housing part A, one end side of the assembly rod 20 is threadedly engaged with the 2C connecting member 12, and the other movable end side is assembled to the side plate part of the housing part A by an assembly screw b. In addition, although in this embodiment, the number of the 2A connecting member 10, the 2B connecting member 11, and the 2C connecting member 12 is three in total, the present invention does not limit the number of the second connecting member.

[0060] The 2A connecting member 10 and the 2B connecting member 11 are particularly Fig. 9 As shown in (a), it is a plate-like object with a size and shape sufficient to fit closely against the inner circumference of the housing portion A, having curved long guide holes 10a, 11a and second bearing holes 10b, 11b. The curved long guide holes 10a, 11a bear the second small diameter portion 6e of the movable hinge shaft 6, the first displacement shaft 13 and the second displacement shaft 14 to enable them to move; the second bearing holes 10b, 11b are opposite to the curved long guide holes 10a, 11a, and while the bearings fix the hinge shaft 7, the fixed hinge shaft 7 is supported so that it can rotate at a fixed position.

[0061] The 2C connecting member 12 is particularly Fig. 9 As shown in (b), it is a plate-like object with a size and shape sufficient to fit tightly against the inner circumference of the outer shell part A, and has a curved long guide hole 12a, a second bearing hole 12b and an internal threaded hole 12c. The curved long guide hole 12a supports the second small diameter portion 6e of the movable hinge shaft 6, the first displacement shaft 13 and the second displacement shaft 14 to enable them to move; the second bearing hole 12b is opposite to the curved long guide hole 12a, and while the bearing fixes the hinge shaft 7, it also supports the fixed hinge shaft 7 so that it can rotate at a fixed position; the internal threaded hole 12c is used to threadably connect the assembly rod 20.

[0062] The third connecting member 15 is particularly Figure 3 , Figure 4 and Fig.10 As shown, it is composed of seven components of the same shape, which are used to prevent the wheelbase between the fixed hinge shaft 7 and the first displacement shaft 13, between the first displacement shaft 13 and the second displacement shaft 14, and between the second displacement shaft 14 and the movable hinge shaft 6 from changing. These third connecting members 15, 15... are smaller and slightly elliptical plate-like objects compared to the first connecting member 9 or the second A connecting member 10, the second B connecting member 11 and the second C connecting member 12. They are composed of seven pieces in total, but the present invention does not limit the number. In particular, Fig.10One of these third connecting components 15, 15... is shown in an enlarged form as a representative. These third connecting components 15, 15... respectively have two connecting holes 15a, 15a... and 15b, 15b... set at a specific interval. Although the inner diameter of each connecting hole 15a, 15a... and 15b, 15b... is not shown in detail, it can be different according to the outer diameter of each shaft portion of the movable hinge shaft 6, the fixed hinge shaft 7, the first displacement shaft 13 and the second displacement shaft 14 connected thereto.

[0063] The wheelbase stabilizing mechanism B is arranged between the movable hinge shaft 6 and the fixed hinge shaft 7. Figure 4 and Fig.11 As shown, it is composed of a pair of hook-shaped members 16 and 17. Fig.11 One of the pieces is shown enlarged as a representative, and the pair of hook-shaped members 16, 17 have connecting holes 16a, 17a and hook-shaped portions 16b, 17b. The connecting holes 16a, 17a are used to assemble the hook-shaped members 16, 17 to the first small diameter portion 13a of the first displacement shaft 13; the hook-shaped portions 16b, 17b are always crossed with each other, so that the hook-shaped members 16, 17 can be maintained on the first small diameter portion 7c of the fixed hinge shaft 7.

[0064] The synchronous rotation mechanism C is composed of the third connecting member 15, 15 ... and the first gear portion 6d, the second gear portion 7d, the third gear portion 13c, and the fourth gear portion 14a. Figure 3 and Figure 4 As shown, the first gear portion 6d, the second gear portion 7d, the third gear portion 13c, and the fourth gear portion 14a are provided on the movable hinge shaft 6 and the fixed hinge shaft 7, the first displacement shaft 13, and the second displacement shaft 14, have the same gear ratio and mesh with each other, so that the movable hinge shaft 6 and the fixed hinge shaft 7, the first displacement shaft 13, and the second displacement shaft 14 can be rotated synchronously. The outer diameter and gear ratio of each gear portion 6d, 7d, 13c, and 14a can be changed. In addition, the synchronous rotation mechanism C is not limited to the embodiment of the present invention, and can also be replaced by a synchronous rotation mechanism using a belt member, for example.

[0065] The friction torque generating mechanism F is a well-known structure, in particular, Figure 3 and Figure 4As shown, it is composed of a first friction torque generating mechanism F1, a second friction torque generating mechanism F2, a third friction torque generating mechanism F3 and a fourth friction torque generating mechanism F4 which are respectively arranged on the movable hinge shaft 6 and the fixed hinge shaft 7, the first displacement rotating shaft 13 and the second displacement rotating shaft 14, and these friction torque generating mechanisms are respectively composed of multiple disc springs 18, friction washers 19 and fastening nuts 22. A plurality of disc springs 18, 18, 18, 18 are respectively inserted through each shaft (movable hinge shaft 6, fixed hinge shaft 7, first displacement rotating shaft 13 and second displacement rotating shaft 14); a pair of friction washers 19, 19; 19, 19; 19, 19; 19 are respectively arranged to clamp these disc springs 18, 18, 18, 18; and fastening nuts 22, 22, 22, 22 are used to respectively threadably connect the external threaded portions 6i, 7i, 13h, 14f of each shaft (movable hinge shaft 6, fixed hinge shaft 7, first displacement rotating shaft 13 and second displacement rotating shaft 14). Among them, the insertion holes 19a, 19a; 19a, 19a; 19a, 19a; 19a, 19a; 19a, 19a provided on each friction pad 19, 19; 19, 19, 19; 19, 19 are deformation holes that can be engaged with each deformation shaft portion 6h, 7h, 13g, 14e of each shaft (movable hinge shaft 6, fixed hinge shaft 7, first displacement shaft 13 and second displacement shaft 14); the insertion holes 18a, 18a, 18a, 18a of each disc spring 18, 18, 18, 18 are not all shown, but they are circular. In addition, Figure 3 and Figure 4 In the figure, reference numerals 23, 23; 23, 23 denote spacers, and reference numerals 24, 24 denote washers. In addition, the first friction torque generating mechanism F1, the second friction torque generating mechanism F2, the third friction torque generating mechanism F3, and the fourth friction torque generating mechanism F4 may also be referred to as friction mechanisms.

[0066] Next, the configuration of the first connecting member 9, the second connecting members 10, 11, 12, and the third connecting members 15, 15, ... will be described. Figures 2 to 4 and Figure 6 As shown, first, the first connecting member 9 also serves as the cover of the housing A, and its long guide hole 9a and the first bearing hole 9b are supported by the flanges 6a and 7a of the movable hinge shaft 6 and the fixed hinge shaft 7. Figure 3On the left side of the figure, three sheet-like members, the second A connecting member 10, the second B connecting member 11 and the second C connecting member 12, are arranged at specific intervals, and the third small diameter portions 6f and 7f of the movable hinge shaft 6 and the fixed hinge shaft 7 are inserted through the curved long guide holes 10a, 11a, 12a and the second bearing holes 10b, 11b, 12b of these second connecting members. The third small diameter portions 13f and the second small diameter portions 14d of the first displacement rotating shaft 13 and the second displacement rotating shaft 14 are further bearing-connected to the aforementioned curved long guide holes 10a, 11a, 12a so as to enable displacement.

[0067] As described above, the movable hinge shaft 6 and the second displacement shaft 14, the second displacement shaft 14 and the first displacement shaft 13, and the second displacement shaft 14 and the fixed hinge shaft 7 are respectively connected to each other by the third connecting members 15, 15, 15, 15, so as to maintain the wheelbases therebetween unchanged.

[0068] The following will describe how the various components and mechanisms of the terminal device 1 operate when the lifting dual-axis hinge 4 of the present invention is used. Figure 1 As shown, a dual-screen foldable tablet computer is shown in which display portions 2 a and 3 a are provided on both the first housing 2 and the second housing 3 .

[0069] The lifting double-axis hinge 4 of the present invention is Fig.12 The function is the same as that of a common biaxial hinge. When the first housing 2 and the second housing 3 are moved from Fig.12 (a) shows the closed state, and the second housing 3 is opened to Fig.12 (c) When the state shown in FIG. 1 is reached, the fixed hinge shaft 7 assembled in the second housing 3 is driven to rotate, thereby generating a rotational driving force. The rotational driving force is transmitted to the third gear portion 13c provided on the first displacement shaft 13 through the second gear portion 7d, and then transmitted to the fourth gear portion 14a meshing with the third gear portion 13c and located on the second displacement shaft 14, and then transmitted to the movable hinge shaft 6 where the first gear portion 6d meshing with the fourth gear portion 14a is located, so that the movable hinge shaft 6 rotates in the opposite direction to the fixed hinge shaft 7. In this way, the first housing 2 and the second housing 3 can be opened from a closed state of 0 degrees to an open state of 80 degrees, 180 degrees and 360 degrees, as shown in FIG. Fig.12 (b) Fig.12 (c) Fig.12(d) is shown. Furthermore, by means of the friction torque generating mechanism F (including the second friction torque generating mechanism F2, the third friction torque generating mechanism F3, the fourth friction torque generating mechanism F4 and the first friction torque generating mechanism F1) provided on each axis (fixed hinge axis 7, the first displacement rotating axis 13, the second displacement rotating axis 14 and the movable hinge axis 6), the first shell 2 and the second shell 3 can be kept stationary for use at any opening angle. If the first shell 2 and the second shell 3 that have been opened to 360 degrees are closed, the above-mentioned action will be performed in the opposite manner, so that the first shell 2 and the second shell 3 are closed back to the original 0 degree state.

[0070] Next, it will be described how the lifting dual-axis hinge of the present invention operates when the terminal device is equipped with an independent keyboard in addition to the dual-screen foldable tablet computer to be used as a notebook computer.

[0071] like Fig.13 As shown, the one indicated by reference numeral 1a is a dual-screen foldable tablet computer equipped with a keyboard 21. The dual-screen foldable tablet computer 1a equipped with a keyboard 21 is usually used simply as a dual-screen foldable tablet computer, but it can also be used as Fig.14 As shown, an additional independent keyboard 21 is placed on the first housing 2, and typing operations are performed in the same manner as using a notebook computer. In addition, the communication transmission between the keyboard 21 and the first display unit 2a and the second display unit 3a can be performed by, for example And other short-range wireless technologies.

[0072] When the user finishes typing on the keyboard 21 and removes the keyboard 21 from the first housing 2, the terminal can be used directly as a dual-screen foldable tablet computer; however, when the user needs to carry the terminal and the keyboard 21 together, if the keyboard 21 can be clamped between the first housing 2 and the second housing 3, not only can the compactness of the device be maintained, but also the situation of forgetting to bring the keyboard 21 will not occur, which improves the convenience of use. Therefore, the second housing 3 must remain normally closed when the first housing 2 is loaded with the keyboard 21, so as to achieve the above purpose. At this time, when the second housing 3 is closed toward the keyboard 21, the rear end of the second housing 3 will contact the rear end of the keyboard 21.

[0073] Starting from the above state, the second shell 3 is further closed relative to the first shell 2 and the keyboard 21, and the fixed hinge shaft 7 and the movable hinge shaft 6 will be subjected to pulling forces in the up-down direction, and the outer shell part A of the lifting dual-axis hinge 4 will be pulled upward together with the fixed hinge shaft 7 along with the movement of the second shell 3. Since the movable hinge shaft 6 can move in the long guide hole 9a and the curved long guide holes 10a, 11a, 12a provided on the first connecting member 9 and each of the second connecting members 10, 11, 12, it will slide downward, thereby generating a gap between the first shell 2 and the second shell 3 with a thickness equal to that of the keyboard 21. In this way, it can be as shown in FIG. Fig.14 As shown in (a), the first housing 2 and the second housing 3 are closed.

[0074] In other words, when the second housing 3 is closed relative to the first housing 2, as described above, the movable hinge shaft 6 and the fixed hinge shaft 7 will be subjected to force, resulting in an increase in their wheelbases. Since the first displacement shaft 13 and the second displacement shaft 14 are connected to each other through the connecting members 15, 15, 15, 15, it is possible to Fig.14 As shown in (a), the first housing 2 and the second housing 3 are moved together in an oblique downward direction in the curved long guide holes 10a, 11a, 12a of the second A connecting member 10, the second B connecting member 11, and the second C connecting member 12. In this way, when the first housing 2 and the second housing 3 are closed with the keyboard 21 sandwiched therebetween, the lifting type biaxial hinge 4 also presents the same Fig.14 (a) The state shown.

[0075] At the same time, by the operation of the synchronous rotation device C, the rotation of the fixed hinge shaft 7 is transmitted to the movable hinge shaft 6 in the above-mentioned case.

[0076] When the second housing 3 closed according to the above process is reopened, the lifting double-axis hinge 4 will return to the original state from the specific opening and closing angle, such as Fig.14 (b) and Fig.14 In addition, after the keyboard 21 is removed from the first housing 2, the lifting biaxial hinge 4 will be lowered by the weight of the second housing 3, so that the dual-screen foldable tablet computer 1 returns to its original state, and the lifting biaxial hinge 4 also returns to its original state.

[0077] As described above, the lifting type biaxial hinge of the present invention is very suitable for use as an opening and closing hinge in ordinary dual-screen folding tablet computers or dual-screen folding tablet computers equipped with independent keyboards. At the same time, it can also be used in dual-screen folding tablet computers using lifting type biaxial hinges or dual-screen folding tablet computers equipped with detachable keyboards. In addition, the lifting type biaxial hinge of the present invention is also suitable for other terminal devices whose thickness varies with the use purpose.

[0078]

Explanation of symbols

[0079] A Shell

[0080] B wheelbase stabilization mechanism

[0081] C Synchronous Rotation Mechanism

[0082] F Friction torque generating mechanism

[0083] F1 No.1 friction torque generating mechanism

[0084] F2 Second friction torque generating mechanism

[0085] F3 3rd friction torque generating mechanism

[0086] F4 4th friction torque generating mechanism

[0087] 1 Terminal machine (dual-screen foldable tablet computer)

[0088] 1a Terminal machine (with keyboard)

[0089] 21st shell

[0090] 3. Second Shell

[0091] 4 lifting double axis hinge

[0092] 51st bracket

[0093] 6 movable hinge axis

[0094] 7Fixed hinge axis

[0095] 8Second bracket

[0096] 91st connecting member

[0097] 102A Connecting Components

[0098] 11 No. 2B connecting member

[0099] 122C Connecting Components

[0100] 131st displacement axis

[0101] 14 2nd displacement axis

[0102] 15Third connecting member

[0103] 16, 17 hook-shaped member

[0104] 21 Keyboard

Claims

1. A lifting double-axis hinge, comprising: A movable hinge shaft mounted on the first housing side; A fixed hinge shaft, which is mounted on the second housing side; a first connecting member, which connects the movable hinge shaft to enable the movable hinge shaft to move, and supports the fixed hinge shaft to enable the fixed hinge shaft to rotate at a fixed position; A plurality of second connecting members, which bear the movable hinge shaft so that the movable hinge shaft can rotate at a movable position, and connect the fixed hinge shaft so that the fixed hinge shaft can rotate at a fixed position, and simultaneously connect the first displacement rotating shaft and the second displacement rotating shaft disposed between the movable hinge shaft and the fixed hinge shaft so that the first displacement rotating shaft and the second displacement rotating shaft can move; a plurality of third connecting members, which respectively connect the fixed hinge shaft and the first displacement shaft, the first displacement shaft and the second displacement shaft, and the second displacement shaft and the movable hinge shaft to maintain the wheelbases therebetween unchanged; and The synchronous rotation mechanism is respectively arranged between the movable hinge shaft and the fixed hinge shaft, and the first displacement rotating shaft and the second displacement rotating shaft.

2. In the lifting double-axis hinge as described in claim 1, the first connecting component is provided with a long guide hole and a first bearing hole, the movable hinge shaft is inserted into the long guide hole so that the movable hinge shaft can slide; the fixed hinge shaft is borne by the first bearing hole so that the fixed hinge shaft can rotate.

3. In the lifting double-axis hinge as described in claim 1, the second connecting component is provided with a curved long guide hole and a second bearing hole, the curved long guide hole is inserted with the movable hinge axis, the first displacement shaft and the second displacement shaft to enable them to slide; the second bearing hole bears the fixed hinge axis.

4. The lifting double-axis hinge as described in claim 1 further includes a wheelbase stabilization mechanism, which is arranged between the fixed hinge axis and the first displacement shaft, and is composed of a pair of hook-shaped components. The pair of hook-shaped components are installed on the first displacement shaft so as to be able to rotate and engage with the fixed hinge axis.

5. The lifting double-axis hinge as described in claim 1, wherein the synchronous rotation mechanism is formed by gears meshing with each other, and the gears are respectively arranged on the movable hinge axis and the fixed hinge axis, and the first displacement shaft and the second displacement shaft.

6. The lifting dual-axis hinge as described in claim 1 further comprises a friction torque generating mechanism, which is respectively arranged on the movable hinge axis and the fixed hinge axis, and the first displacement rotating axis and the second displacement rotating axis.

7. The lifting double-axis hinge as described in claim 6, wherein the friction torque generating mechanism includes friction washers and disc springs provided for each axis to pass through.

8. A terminal machine using the lifting double-axis hinge according to any one of claims 1 to 7.

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