TWM614423U - Biaxial arc-shaped hinge device and electronic device using the same - Google Patents

Abstract

A double-shaft arc-shaped hinge device includes an arc-shaped torsion unit, an arc-shaped switching member, an arc-shaped limiting member, a first rotating shaft, and a second rotating shaft. The arc-shaped limiting member is connected between the arc-shaped torsion unit and the arc-shaped switching member. The first and second rotating shafts are arranged in parallel and connected to the arc-shaped limiting member and the arc-shaped torsion unit. When a rotating shaft pivots relative to the second rotating shaft, the arc-shaped switching member and the arc-shaped limiting member act accordingly, so that when the second rotating shaft rotates to the first switching angle, it will stop pivoting and limit, and then the first When the rotating shaft rotates to the second switching angle, it stops pivoting and limiting, so that a double shaft operates at an arc-shaped two-stage switching and limiting rotation angle.

Description

Biaxial arc-shaped hinge device and electronic device using the same

This creation is about a two-axis arc-shaped hinge device and an electronic device using it, especially a two-axis arc-shaped two-stage switch to achieve the technical field of electronic device folding and turning operation.

According to the existing foldable electronic device, such as a notebook computer, it includes a hub and two plates. The hub is connected between the two plates. The two plates can be relatively closed or unfolded by the hinge device, for example, the relative included angle of the two plates can be made to be any angle from 0 to 360 degrees. The foldable electronic device can adopt a hinge device with a two-stage and three-stage switching structure, so that the user can pull the two plates in sequence. This kind of hinge device includes two rotating shafts, wherein the two rotating shafts are respectively connected to the two plate bodies of the electronic device, so that the two plate bodies can respectively rotate around the two rotating shafts. However, with the thinning of electronic devices, the existing two-stage or three-stage hinges have a flat-cut and flat-cut slider for switching. Therefore, the volume of the hinge takes up a lot of space, which in turn affects the overall electronic device. The appearance and aesthetics also affect the willingness to buy and reduce the lack of competitiveness.

The purpose of this creation is to propose a hub and an electronic device using it, using an arc-shaped structure design with the assembly of hub components, and at the same time, it has a dual-axis, two-stage switching function and the overall volume is lighter and thinner.

In order to achieve the above objective, this creation proposes a two-axis arc-shaped hinge, which includes an arc-shaped torsion unit, an arc-shaped limiter, an arc-shaped switch, a first shaft, and a second shaft. The arc-shaped limiting member is connected to the arc-shaped torsion unit, and the arc-shaped limiting member has a first limiting portion and a second limiting portion. The arc-shaped switching element is arranged on the arc-shaped limiting element, and both ends of the arc-shaped switching element are respectively provided with a first switching end and a second switching end. The first rotating shaft is connected to the arc-shaped limiting member and the arc-shaped torsion unit through a piercing shaft. The first rotating shaft is adjacently provided with a first alignment portion and a first free end Part, and a first guiding part, the first aligning part, the first free end and the first switching end are in positions corresponding to each other. The first guiding part corresponds to the position of the first limiting part. The second rotating shaft is arranged in parallel with the first rotating shaft, the second rotating shaft is connected through the arc-shaped limiting member and the arc-shaped torsion unit, and the second rotating shaft is adjacently provided with a second alignment portion and a second free end portion , And a second guiding part, the second alignment part, the second free end and the second switching end are in positions corresponding to each other. The second guiding part corresponds to the position of the second limiting part. Wherein, when the first shaft and the second shaft are relatively pivoted, the arc-shaped switching member is used to alternately switch the first switching end to the first alignment part, the first free end, and the second switching end to the second pair The position part, the second free end part, and the action of the arc-shaped limiting member corresponding to the arc-shaped switching member make the first guiding part stop pivoting in the first limiting part, and the second guiding part is at The second limit part presents a stop pivot limit, and accordingly presents a two-stage switching and limit rotation angle.

In an embodiment of the two-axis arc-shaped hinge device of the present creation, it further includes an arc-shaped hollow shell, and the arc-shaped torsion unit, the arc-shaped switching member, and the arc-shaped limiting member are arranged in the arc-shaped hollow shell. Part of the shafts of the first rotating shaft and the second rotating shaft are arranged in the arc-shaped hollow shell.

In an embodiment of the biaxial arc-shaped hinge device of the present invention, it further includes a spacer, which is located at one end of the arc-shaped hollow shell, and the spacer has a first inserting slot and a second inserting groove. Slotted, the first fitting slot is fitted on the first rotating shaft, and the second fitting slot is fitted on the second rotating shaft.

In an embodiment of the two-axis arc-shaped hinge of the present invention, the first guide part has a first stop end, and the first stop end is matched with the limit position of the first limit part, and the second guide The part has a second stop end, and the second stop end is matched with the limit position of the second limit part.

In an embodiment of the dual-axis arc-shaped hinge of the present creation, when the dual-axis arc-shaped hinge is at 0 degrees, the first alignment portion of the first rotating shaft abuts against the first switching end of the arc-shaped switching element, The first stop end of the first guide part abuts against the first limit part to stop pivoting, and the second free end of the second shaft abuts against the second switching end of the arc-shaped switching element, so that the first The shaft cannot rotate. The second free end of the second rotating shaft can pivot on the second switching end.

In an embodiment of the two-axis arc-shaped hinge of the present invention, the two-stage switching and limit rotation angles are divided into a first switching angle (R1) and a second switching angle (R2). When the two rotating shafts are relatively pivoted to the first switching angle, the first aligning portion of the first rotating shaft abuts and fixes the first switching end portion, and at the same time, a first stop portion of the first guide portion pivots and abuts to the first A limit part In order to show the limit stop pivoting state. When the first shaft and the second shaft are relatively pivoted to the second switching angle, the second alignment portion of the second shaft and the second switching end are abutted and fixed, and at the same time, a second stop portion of the second guide portion pivots Turning against the second limiting portion to present a limiting and stopping pivoting state.

In an embodiment of the two-axis arc-shaped hinge of the present invention, the arc-shaped switching member further has two switching openings, and the arc-shaped limiting member further has two limiting members, and each limiting member is correspondingly penetrated through each One switch in the opening.

In an embodiment of the biaxial arc-shaped hinge device of the present invention, it further includes at least one arc-shaped fixing member, and both sides of the arc-shaped torsion unit are respectively provided with an arc-shaped fixing member and an arc-shaped limiting member.

In an embodiment of the two-axis arc-shaped hinge of the present invention, the first rotating shaft has a first operating portion and a first shaft connecting portion. The first aligning portion, the first free end portion and the first guiding portion are located between the first operating portion and the first shaft connecting portion. The second rotating shaft has a second operating portion and a second shaft connecting portion. The second aligning portion, the second free end portion and the second guiding portion are located between the second operating portion and the second shaft connecting portion.

In an embodiment of the biaxial arc-shaped hinge device of the present invention, it further includes a first torsion member and a second torsion member. The first torsion element is pivotally connected to the first shaft connection portion, the first torsion element is away from the first operating portion, the second torsion element is pivotally connected to the second shaft connection portion, and the second torsion element is away from the second operating portion.

This creation also proposes an electronic device, which includes the two-axis arc-shaped hinge as described above, a first board and a second board. The first plate is connected to the first rotating shaft. The second board is connected to the second rotating shaft. The first board is connected to the first rotating shaft by a first mounting member. The second board is connected to the second rotating shaft by a second mounting member.

To sum up, by turning the first plate body of the electronic device to link the pivot, the arc torsion unit, the arc switch, and the arc limiter are combined with an arc hollow shell to form a component assembly with The function of two-stage switching and limit rotation angle reduces the overall volume of the dual-axis arc-shaped hinge device without occupying space and can be visually presented with curvature, achieving beautiful, light and thin effects.

In order to make the above and other purposes, features and advantages of this creation more obvious and understandable, the following is a detailed description of the preferred embodiments, in conjunction with the accompanying drawings:

100: Double-axis arc hub

200: electronic device

201: The first board

202: second board

10: Arc torque unit

11: The first pivot hole

12: The second pivot hole

20: Arc switch

21: The first switching end

22: second switching end

23: Switch opening

30: Curved limiter

31: The first limit

32: The second limit part

33: limit piece

34: The first positioning hole

35: second positioning hole

40: The first shaft

41: The first alignment part

42: first free end

43: The first guide

431: first stop

44: The first operation part

45: The first shaft joint

46: The first installation

50: second shaft

51: The second counterpoint

52: second free end

53: The second guide

531: second stop

54: The second operation part

55: The second shaft joint

56: The second mounting part

60: Arc hollow shell

70: Spacer

71: The first fitting slot

72: second fitting slot

80: Arc-shaped fixture

91: The first torque piece

92: The second torque piece

R1: The first switching angle

R2: second switching angle

Figure 1 is a three-dimensional view of the creative structure.

Figure 2 is another perspective structural three-dimensional view of the creation.

Figure 3 is an exploded view of the structure of Figure 1.

Figure 4 is an enlarged view of the structure of the arc-shaped limiter created.

Figure 5 is another three-dimensional view of the creative structure.

Figure 6 is a schematic diagram of the creative application on the electronic device before being opened and turned.

Fig. 7 is a cross-sectional view of Fig. 6 in a switching stop state.

Fig. 8 is a cross-sectional view of Fig. 6 in a restricted and reversed state.

Fig. 9 is a schematic diagram of the creative application applied to the electronic device and the state is flipped at the first angle.

Fig. 10 is a cross-sectional view of Fig. 9 before switching over the stop.

Figure 11 is a schematic diagram of the state of Figure 9 after the shift stop.

Fig. 12 is a cross-sectional view of Fig. 9 in a restricted and reversed state.

Figure 13 is a schematic diagram of a state where the creation is applied to an electronic device and turned at a second angle.

Figure 14 is a cross-sectional view of Figure 13 in a switching stop state.

Fig. 15 and Fig. 13 are cross-sectional views of the limit-reversing state.

Please refer to Figure 1, Figure 2, Figure 3 and Figure 4 at the same time. Figures 1 and 2 are three-dimensional views of the creative structure from different perspectives; Figure 3 is an exploded view of the structure of Figure 1; Figure 4 is An enlarged view of the structure of the arc-shaped limiter in this creation. First of all, it will explain in detail the components of the overall structure of the double-axis arc-shaped hinge of this creation and the way of assembly. The biaxial arc hinge device 100 includes an arc torsion unit 10, an arc limiting member 30, an arc switching member 20, a first rotating shaft 40 and a second rotating shaft 50. The arc-shaped limiting member 30 is connected to the arc-shaped torsion unit 10, and the arc-shaped switching member 20 is disposed on the arc-shaped limiting member 30. The second rotating shaft 50 is arranged parallel to the first rotating shaft 40, the first rotating shaft 40 is connected to the arc-shaped limiting member 30 and the arc-shaped torsion unit 10 through, and the second rotating shaft 50 is connected to the arc-shaped limiting member 30 and Arc torsion unit 10. The arc-shaped torsion unit 10, the arc-shaped switching member 20, and the arc-shaped limiting member 30 are connected with each other in arc-shaped curvatures corresponding to each other.

The arc-shaped torsion unit 10 can be formed by stacking a plurality of torsion springs, or a torsion spring that is designed as an integrated design with a preset torque coefficient according to actual needs. The type of torsion springs is not limited here, as long as it is designed as an arc-shaped torsion structure. Such is the scope of patent protection of this creation. arc Both ends of the torsion unit 10 have a first pivot hole 11 and a second pivot hole 12 respectively. Both sides of the arc-shaped torsion unit 10 are respectively provided with an arc-shaped fixing member 80 and an arc-shaped limiting member 30. The arc-shaped limiting member 30 has a first limiting portion 31, a second limiting portion 32, and two limiting members 33 in opposite directions. The second limiting member 33 is located between the first limiting portion 31 and the second limiting portion 32. The arc-shaped limiting member 30 further has a first positioning hole 34 and a second positioning hole 35. The first pivot hole 11 corresponds to the position of the first positioning hole 34; the second pivot hole 12 and the second positioning hole The position of 35 corresponds.

Both ends of the arc-shaped switching member 20 have a first switching end 21, a second switching end 22, and two switching openings 23. The two switching openings 23 are located at the first switching end 21 and the second switching end. Between 22. The two limiting members 33 are respectively installed in the two switching openings 23, and the two limiting members 33 can correspondingly move in the second switching opening 23 according to the rotation of the first rotating shaft 40 and the second rotating shaft 50.

The first rotating shaft 40 includes a first alignment portion 41 and a first free end portion (42) that are adjacently disposed, and a first guiding portion 43. The first alignment portion 41 and the first free end portion 42 correspond to the positions of the first switching end portion 21. The first guiding portion 43 has a first stopping end 431, and the first stopping end 431 is matched with the limiting position of the first limiting portion 31. The first rotating shaft 40 further includes a first operating portion 44 and a first shaft connecting portion 45. The first positioning portion 41, the first free end portion 42 and the first guiding portion 43 are located between the first operating portion 44 and the first shaft connecting portion 45. The first rotating shaft 40 passes through the first positioning hole 34 and the first pivot hole 11 to the arc-shaped fixing member 80 in sequence. The biaxial arc-shaped hinge device 100 further includes a first torsion member 91. The first torsion member 91 is pivotally connected to the first shaft connecting portion 45; the first torsion member 91 is away from the first operating portion 44, and the arc-shaped switching member 20 is adjacent to the One operation part 44.

The second rotating shaft 50 includes a second aligning portion 51 and a second free end portion (52) that are adjacently disposed, and a second guiding portion 53. The second positioning portion 51 and the second free end portion 52 correspond to the positions of the second switching end portion 22. The second guiding portion 53 corresponds to the position of the second limiting portion 32. The second guiding portion 53 has a second stopping end 531, and the second stopping end 531 is matched with the limiting position of the second limiting portion 32. The second rotating shaft 50 further includes a second operating portion 54 and a second shaft connecting portion 55. The second positioning portion 51, the second free end portion 52 and the second guiding portion 53 are located between the second operating portion 54 and the second shaft connecting portion 55. The second rotating shaft 50 passes through the second positioning hole 35 and the second pivot hole 12 to the arc-shaped fixing member 80 in sequence. The biaxial arc-shaped hinge device 100 further includes a second torsion member 92, the second torsion member 92 is pivotally connected to the second shaft connection portion 55, the second torsion member 92 is away from the second operating portion 54, and the arc-shaped switching member 20 is adjacent second Operation part 54.

The biaxial arc hinge device 100 further includes a spacer 70 installed on the first rotating shaft 40 and the second rotating shaft 50. The spacer 70 has a first insertion slot 71 and a second insertion slot 72. The first fitting slot 71 is fitted on the first rotating shaft 40, and the second fitting slot 72 is fitted on the second rotating shaft 50. In this embodiment, the cutting directions of the first fitting slot 71 and the second fitting slot 72 of the spacer 70 are the transverse slot and the longitudinal slot, respectively. This structural design can simplify the assembly area of the components and can The function of fixing the first rotating shaft 40 and the second rotating shaft 50 is achieved.

Wherein, when the first shaft 40 and the second shaft 50 pivot relatively, the arc-shaped switching member 20 is used to alternately switch the first switching end 21 to the first positioning portion 41, the first free end 42, and the second switching The end portion 22 to the second alignment portion 51, the second free end portion 52, and the arc-shaped limiting member 30 corresponding to the arc-shaped switching member 20 actuates, so that the first guiding portion 43 is formed in the first limiting portion 31 The pivoting stop limit, and the second guide portion 53 is in the second limit portion 32 to stop pivoting, and accordingly present a two-stage switching and limit rotation angle, which will be described in detail later.

Please also refer to Figure 5, which is another three-dimensional view of this creation. The biaxial arc-shaped hinge device 100 further includes an arc-shaped hollow shell 60. The shape of the arc-shaped hollow shell 60 is an arc that matches the arc-shaped torsion unit 10, the arc-shaped switching member 20, and the arc-shaped limit member 30. The structure is designed, except that the first operating portion 44 of the first rotating shaft 40 and the second operating portion 54 of the second rotating shaft 50 are located outside the arc-shaped hollow housing 60, other components are installed inside, such as the arc-shaped torsion unit 10 , The arc-shaped switching member 20, the arc-shaped limiting member 30, the first torsion member 91 and the second torsion member 92 are all arranged in the arc-shaped hollow housing 10. Wherein, part of the shaft portions of the first rotating shaft 40 and the second rotating shaft 50 are arranged in the arc-shaped hollow shell 60 by the spacer 70.

After understanding the components and relative actions of this creation as described above, we will continue to explain in detail how this creation is actually applied to electronic devices to achieve the functions of folding and flipping two-stage switching and limiting rotation angle. Please refer to Fig. 6, Fig. 7 and Fig. 8 at the same time. Fig. 6 is a schematic diagram of the state before the creation is applied to an electronic device before being opened and turned; Fig. 7 is a cross-sectional view of the switching stop state of Fig. 6; Fig. 8 is a cross-sectional view of Fig. 6 in a restricted and reversed state. The electronic device 200 includes a biaxial arc-shaped hinge device 100 as shown in FIG. 1, a first board 201 and a second board 202. Among them, the first board 201 can be a screen, and the second board 202 can be a host base. The first plate 201 can be connected to the first shaft 40 through a first mounting member 46, and the second plate 202 can be connected to the first shaft 40 through a second mounting member 46. The mounting member 56 is connected to the second rotating shaft 50.

As shown in Figure 7, the first plate body 201 and the second plate body 202 are in a closed state. In this embodiment, the first mounting member 46 is used as the tilted state of the first plate body 201, and the second mounting member 56 is used as the tilted state of the second plate 202. When the tilting state is 0 degrees, the first positioning portion 41 of the first rotating shaft 40 corresponds to the position of the first switching end 21 of the arc-shaped switching member 20, and the first positioning portion 41 is corresponding to the first switching end 21 It is a plane structure design, so it will form a fixed state when abutting against each other; and the dynamic of the second rotating shaft 50 at the other end, the second free end 52 of the second rotating shaft 50 and the second switching end of the arc-shaped switching element 20 The position of the second switching end 22 corresponds to the position of the second switching end 22, and the second free end 52 is a circular arc structure design. Therefore, when abutting against each other, the second free end 52 can be positioned at the second switching end 22. Up pivot.

To further illustrate, as shown in Figure 8, since the first stop end 431 of the first guide portion 43 is matched with the stop position of the first stop portion 31, the second stop end of the second guide portion 53 531 is a limit position that cooperates with the second limit portion 32. For example, the first limiting portion 31 and the second limiting portion 32 may be designed as a corner structure, which can match the limiting positions of the first stopping end 431 and the second stopping end 531. Of course, this creation is not limited to the structural design of the first limiting portion 31 and the second limiting portion 32, as long as the limiting effect can be formed, it belongs to the scope of protection of this patent. In terms of actual operation, the first stop end 431 on the first guide portion 43 of the first rotating shaft 40 abuts against the first limit portion 31 of the arc-shaped limit member 30, showing a stop pivoting limit, except The first positioning portion 41 and the first switching end portion 21 are abutted and fixed to each other, and at the same time, the first stop end 431 also restricts the first rotating shaft 40 to continue to pivot. With the dynamics of the second rotating shaft 50, the second free end 52 of the second rotating shaft 50 can pivot on the second switching end 22, so that the second stop end 531 on the second guiding part 53 is far away from the second The limit position of the limit portion 32 forms a pivotable movement stroke.

Please refer to Figure 9, Figure 10, Figure 11 and Figure 12 at the same time. Figure 9 is a schematic diagram of the creation applied to an electronic device and the first switching angle is flipped open; Figure 10 is Figure 9 Fig. 11 is a schematic diagram of the state after the switch is switched to the stop of Fig. 9; Fig. 12 is a sectional view of the limit reversed state of Fig. 9. When you start to turn the first plate At 201, the second free end 52 of the second rotating shaft 50 can pivot on the second switching end 22 until the second aligning portion 51 and the second switching end 22 correspond to each other and are far away from each other. It is worth noting that when pivoting to the first switching angle R1, in this embodiment, the first switching angle R1 is illustrated by taking 200 degrees as the reference point as an example. As shown in FIG. 11, the arc-shaped switching member 20 The second switching end portion 22 of the switch is switched to abut against the second alignment portion 51 of the second shaft 50. With the dynamics of the first rotating shaft 40 at the other end, the relative positions of the first positioning portion 41 of the first rotating shaft 40 and the first switching end 21 are far away from each other, that is, the pivoting state can be started.

To further illustrate, as shown in FIG. 12, the second stop end 531 of the second guide portion 53 is matched with the limit position of the second limit portion 32. The second stopping end 531 abuts against the second limiting portion 32 of the arc-shaped limiting member 30, showing a stop pivoting limit, except that the second positioning portion 51 and the second switching end 22 are fixed against each other. In addition, at the same time, the second stop end 531 also restricts the second rotating shaft 50 from continuing to pivot. With the dynamics of the first rotating shaft 40, the first free end 42 of the first rotating shaft 40 can pivot on the first switching end 21, so that the first stop end 431 on the first guiding part 43 is far away from the first stop end 431. The limit position of the limit portion 31 forms a pivotable movement stroke.

Please refer to Figure 13, Figure 14, and Figure 15. Figure 13 is a schematic diagram of the creation applied to an electronic device and the second switching angle is flipped open; Figure 14 is the switching stop of Figure 13 State cross-sectional view; Fig. 15 and Fig. 13 are a cross-sectional view of the limit-reversing state. When the first plate body 201 starts to be tilted from the first switching angle R1 position to the second switching angle R2 position, in this embodiment, the first switching angle R1 is set to 200 degrees, and the second switching angle R2 is set Take 360 degrees as an example. The second rotating shaft 50 presents a stop pivoting limit, wherein the second switching end 22 of the arc-shaped switching member 20 is switched to abut against the second positioning portion 51 of the second rotating shaft 50, and the second guide portion 53 is The two stop ends 531 abut against the limiting position in the second limiting portion 32 of the arc limiting member 30. With the dynamics of the first rotating shaft 40, the first free end 42 of the first rotating shaft 40 can pivot on the first switching end 21, so that the first stop end 431 on the first guiding part 43 is far away from the first The limit position of a limit part 31 forms a pivotable movement stroke.

Among them, by changing the design of the first and second alignment parts 41, 51, the first and second free end parts 42, 52 and the first and second guiding parts 43, 53 in this creation, a variety of two can be designed. Segmented two-axis switching angle structure, such as 0-200 degrees and 200-360 degrees two-stage switching structure; at the same time has a limit pivoting function. When the electronic device 200 is to be folded and folded (that is, when it is turned back to 0), the operation steps of the embodiment of the above-mentioned second switching angle R2 are reversed to perform the operation steps of the embodiment of 0 angle to complete. Among them, the first switching angle R1 of the two-stage switching angle is preset to rotate from 0 degrees to 200 degrees, with 200 degrees as the switching reference point, and the second switching angle R2 is preset to rotate from 201 degrees to 360 degrees. Of course, The reference point of the switching angle is not limited to 200 degrees, and can be adjusted according to actual application requirements.

However, the foregoing is only a feasible embodiment of this creation and should be able to limit the scope of implementation of this creation, that is, all changes or modifications made in accordance with the characteristics and spirit described in the scope of this creation application should still belong to This creation patent covers the scope.

100: Double-axis arc hub

10: Arc torque unit

20: Arc switch

30: Curved limiter

40: The first shaft

42: first free end

43: The first guide

46: The first installation

50: second shaft

56: The second mounting part

70: Spacer

80: Arc-shaped fixture

91: The first torque piece

92: The second torque piece

Claims (10)

A double-axis arc-shaped hinge device, including: An arc-shaped torque unit; An arc-shaped limiting member connected to the arc-shaped torsion unit, the arc-shaped limiting member having a first limiting portion and a second limiting portion opposite to each other; An arc-shaped switching element is arranged on the arc-shaped limiting element, and both ends of the arc-shaped switching element are respectively provided with a first switching end and a second switching end; A first rotating shaft, which is connected to the arc-shaped limiting member and the arc-shaped torsion unit through a through shaft, the first rotating shaft includes a first aligning portion and a first free end that are adjacently arranged, and a first A guiding portion, the first positioning portion, the first free end portion and the position of the first switching end portion correspond to the position of the first switching end portion, and the first guiding portion corresponds to the position of the first limiting portion; and A second rotating shaft, the second rotating shaft is arranged in parallel with the first rotating shaft, the second rotating shaft is connected to the arc-shaped limiting member and the arc-shaped torsion unit through the second rotating shaft, and the second rotating shaft includes an adjacently disposed first rotating shaft Two alignment portions, a second free end portion, and a second guide portion. The second alignment portion, the second free end portion and the second switching end portion correspond to the positions of the second switching end portion, and the second guide portion The part corresponds to the position of the second limit part; Wherein, when the first rotating shaft and the second rotating shaft are relatively pivoted, the arc-shaped switching element is used to alternately switch the first switching end to the first aligning portion, the first free end, and the second switching From the end to the second aligning portion and the second free end, and at the same time, the arc-shaped limiting piece corresponds to the action of the arc-shaped switching piece, so that the first guiding portion stops in the first limiting portion The pivot limit, and the second guide portion is in the second limit portion to stop pivoting, thereby presenting a two-stage switching and limit rotation angle. The two-axis arc-shaped hinge device described in claim 1, further comprising an arc-shaped hollow shell, and the arc-shaped torsion unit, the arc-shaped switching member, and the arc-shaped limiting member are arranged in the arc-shaped hollow shell In the body, part of the shafts of the first rotating shaft and the second rotating shaft are arranged in the arc-shaped hollow shell. The two-axis arc-shaped hinge device of claim 2, further comprising a spacer located at one end of the arc-shaped hollow shell, the spacer having a first inserting slot and a second inserting Close the slot, the first fitting slot is fitted on the first rotating shaft, the second fitting slot is fitted on the second rotating shaft, and the spacer is used to make the first rotating shaft and Part of the second shaft The partial shaft part is arranged in the arc-shaped hollow shell. The two-axis arc-shaped hinge device according to claim 1, wherein the first guide portion has a first stop end, and the first stop end is matched with the limit position of the first limit portion, and the second The two guiding parts have a second stop end, and the second stop end is matched with the limit position of the second limit part. The two-axis arc-shaped hinge device according to claim 1, wherein the two-stage switching and the limit rotation angle are divided into a first switching angle and a second switching angle, and the first rotating shaft is opposite to the second rotating shaft When pivoted to the first switching angle, the first aligning portion of the first rotating shaft abuts and fixes the first switching end, and at the same time a first stop end of the first guide portion pivots and abuts To the first limiting portion to present a limiting and stopping pivoting state; when the first rotating shaft and the second rotating shaft are relatively pivoted to the second switching angle, the second alignment portion of the second rotating shaft and the first The two switching ends are abutted and fixed, and at the same time, a second stop end of the second guide part pivots and abuts against the second limit part to present a limit stop pivoting state. The two-axis arc-shaped hinge device according to claim 1, wherein the arc-shaped switching member further has two switching openings, the arc-shaped limiting member further has two limiting members, and each limiting member is correspondingly penetrated through Each of the switch openings. The biaxial arc-shaped hinge device of claim 1 further includes at least one arc-shaped fixing member, and both sides of the arc-shaped torsion unit are respectively provided with the arc-shaped fixing member and the arc-shaped limiting member. The two-axis arc-shaped hinge device according to claim 1, wherein the first rotating shaft further includes a first operating portion and a first shaft connecting portion, the first alignment portion, the first free end and the first shaft A guiding portion is located between the first operating portion and the first shaft connecting portion; the second rotating shaft has a second operating portion and a second shaft connecting portion, the second alignment portion and the second free end The portion and the second guiding portion are located between the second operating portion and the second shaft connecting portion. The biaxial arc-shaped hinge device according to claim 8, further comprising a first torsion member and a second torsion member. The first torsion member is pivotally connected to the first shaft connecting portion, and the first torsion member is away from the first torsion member. The first operating portion, the second torsion member is pivotally connected to the second shaft connection portion, and the second torsion member is away from the second operating portion. An electronic device, including: The two-axis arc-shaped pivot device described in any one of claims 1 to 9; A first plate connected to the first rotating shaft; and A second plate is connected to the second rotating shaft.

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