A dual-axis hinge that rotates in sequential switching

Abstract

The present invention belongs to the technical field of biaxial hinges, and specifically relates to a biaxial hinge that sequentially switches rotations, including a biaxial hinge body, a bracket, a first shaft, a second shaft, and a switching piece. The side wall of the bracket is provided with a first through hole, a second through hole separated from the first through hole, and an assembly hole located between the first through hole and the second through hole. The first shaft includes a first rod body that penetrates into the first through hole and rotates relative to the bracket, and a first cam that is sleeved outside the first rod body and rotates therewith. In the present invention, these lobes are pushed when the first shaft and the second shaft rotate sequentially, so that the switching piece rotates in place relative to the bracket. When the first shaft and the second shaft are restricted from rotating, at least one of these lobes contacts the first notch or the second notch. Therefore, the present invention improves the problem that the conventional structure is not conducive to user operation. At the same time, the biaxial hinge has the characteristics of stable structure and reduced volume.

Description

Technical Field

[0001] The present invention relates to the technical field of biaxial hinges, and particularly to a biaxial hinge that sequentially switches rotations. Background Art

[0002] A hinge is a mechanical device used to connect two solids and allow relative rotation between them. A hinge can be composed of movable components or foldable materials. Hinges are more commonly installed on cabinets and are mainly classified by material into stainless steel hinges and iron hinges. To provide people with a better experience, hydraulic hinges (also known as damping hinges) have emerged. Their characteristic is to bring a buffering function when the cabinet door is closed, minimizing the noise generated by the collision between the cabinet door and the cabinet body when the door is closed.

[0003] However, in the implementation of current biaxial hinges, mainly through a switching piece being pushed by a rotating shaft rod, the switching piece generates displacement on the bracket and restricts the other shaft rod. However, the aforementioned biaxial hinge is limited by the movement space of the switching piece, which is not conducive to miniaturization of the volume, and thus affects the adoption of the implementation object. Summary of the Invention

[0004] The purpose of the present invention is to provide a biaxial hinge that sequentially switches rotations to solve the problems in the above-mentioned background art that the existing hinge structure implemented with a torsion spring is not conducive to user operation, and the hinge is limited by the movement space of the switching piece, which is not conducive to miniaturization of the hinge volume.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A biaxial hinge that sequentially switches rotations, including a biaxial hinge body, a bracket, a first shaft, a second shaft, and a switching piece. A first through-hole, a second through-hole separated from the first through-hole, and an assembly hole located between the first through-hole and the second through-hole are provided on the side wall of the bracket. The first shaft includes a first rod body that penetrates into the first through-hole and rotates relative to the bracket, and a first cam sleeved outside the first rod body and rotating therewith. A first notch is provided on the outer wall of the first cam. The second shaft is horizontally arranged with the first shaft. The second shaft includes a second rod body that penetrates into the second through-hole and can rotate relative to the bracket, and a second cam sleeved outside the second rod body and rotating therewith. A second notch is provided on the outer wall of the second cam. The switching piece is arranged at the right end of the assembly hole. Uniformly arranged and circumferentially surrounding the switching piece are lobes formed on the outside of the switching piece. The lobes are engaged with the first cam and the second cam. The switching piece rotates in place relative to the bracket, and the side walls of the lobes are respectively in contact with the first notch and the second notch.

[0006] Preferably, the switching piece has a continuous wave surface provided along the circumference of the switching piece for forming the lobes.

[0007] Preferably, the central angles corresponding to the lobes are equal.

[0008] Preferably, the forming surface of the switching piece faces the opening of the assembly hole, and the biaxial hinge body includes a pin that sequentially penetrates the opening and the assembly hole and restricts the switching piece to only rotate in place.

[0009] Preferably, the aperture of the opening is larger than that of the assembly hole, and the pin includes a narrow-diameter section extending into the assembly hole and a wide-diameter section that continues the narrow-diameter section and extends into the opening.

[0010] Preferably, the first cam has a first arc surface that contacts the lobe and first planes that respectively connect the two ends of the first arc surface and jointly form a first notch, and the second cam has a second arc surface that contacts the lobe and second planes that respectively connect the two ends of the second arc surface and jointly form a second notch.

[0011] Preferably, the first shaft includes a first auxiliary wheel that rotates with the first rod body and restricts the rotation trajectory of the first rod body on the bracket, and the second shaft includes a second auxiliary wheel that rotates with the second rod body and restricts the rotation trajectory of the second rod body on the bracket.

[0012] Preferably, the bracket forms retaining walls that respectively face the first auxiliary wheel and the second auxiliary wheel and restrict the rotation of the first auxiliary wheel and the second auxiliary wheel.

[0013] Preferably, the bracket includes a base with a first through hole and a second through hole, and a boss provided on the base that jointly forms an assembly hole with the base. One of the retaining walls is formed on one side of the boss facing the first auxiliary wheel and on one side facing the second auxiliary wheel respectively.

[0014] Preferably, the biaxial hinge has a connecting piece provided on one side of the bracket and connecting the first shaft and the second shaft, and a set of torsion spring pieces provided on one side of the bracket and respectively located on the first shaft and the second shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the present invention, these lobes are pushed when the first shaft and the second shaft rotate in sequence, causing the switching piece to rotate in place relative to the bracket. When the first shaft and the second shaft are restricted from rotating, at least one of these lobes contacts the first notch or the second notch. Therefore, the present invention improves the problem that the conventional structure is not conducive to user operation, and at the same time, the biaxial hinge has the characteristics of stable structure and reduced volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0018] Figure 2 is an exploded schematic Figure 1 ;

[0019] Figure 3 is an exploded schematicFigure 2 ;

[0020] Figure 4 is the front view structural schematic diagram of the present invention;

[0021] Figure 5 is the side view structural schematic diagram of the present invention;

[0022] Figure 6 is the side view implementation schematic Figure 1 ;

[0023] Figure 7 is the side view implementation schematic Figure 2 ;

[0024] Figure 8 is the side view implementation schematic Figure 3 ;

[0025] Figure 9 is the side view implementation schematic Figure 4 ;

[0026] Figure 10 is Figure 4 the sectional schematic diagram of line A-A of ;

[0027] Figure 11 is Figure 4 the sectional implementation schematic of line A-A of Figure 1 ;

[0028] Figure 12 is Figure 4 the sectional implementation schematic of line A-A of Figure 2 .

[0029] In the figure: 100 biaxial hinge body, 10 brackets, 11 first perforations, 12 second perforations, 13 assembly holes, 14 retaining walls, 141 rotation-permitted section, 142 rotation-restricted section, 15 bases, 16 bosses, 20 first shafts, 21 first rod bodies, 22 first cams, 221 first notches, 222 first arc surfaces, 223 first planes, 23 first auxiliary wheels, 231 first arc-shaped working surfaces, 232 first limiting planes, 233 first connecting surfaces, 30 second shafts, 31 second rod bodies, 32 second cams, 321 second notches, 322 second arc surfaces, 323 second planes, 33 second auxiliary wheels, 331 second arc-shaped working surfaces, 332 second limiting planes, 333 second connecting surfaces, 40 switching pieces, 41 convex lobes, 411 central angles, 42 continuous wavy surfaces, 43 openings, 50 pins, 51 narrow diameter sections, 52 wide diameter sections, 60 connecting pieces, 61 torsion spring sheet groups. Detailed implementation manners

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0032] Embodiment 1:

[0033] Please refer to Figures 1 - 12 and the present invention provides a technical solution: a dual-axis hinge that sequentially switches and rotates, including a dual-axis hinge body 100, a bracket 10, a first shaft 20, a second shaft 30, and a switching piece 40. The side wall of the bracket 10 is provided with a first through hole 11, a second through hole 12 separated from the first through hole 11, and an assembly hole 13 located between the first through hole 11 and the second through hole 12. The first shaft 20 includes a first rod body 21 that penetrates into the first through hole 11 and rotates relative to the bracket 10, and a first cam 22 sleeved outside the first rod body 21 and rotating therewith. A first notch 221 is formed on the outer wall of the first cam 22. The second shaft 30 is horizontally arranged with the first shaft 20. The second shaft 30 includes a second rod body 31 that penetrates into the second through hole 12 and can rotate relative to the bracket 10, and a second cam 32 sleeved outside the second rod body 31 and rotating therewith. A second notch 321 is formed on the outer wall of the second cam 32. The switching piece 40 is arranged at the right end of the assembly hole 13. Uniformly arranged convex lobes 41 that surround the periphery of the switching piece 40 are formed on the outside of the switching piece 40. The convex lobes 41 are engaged with the first cam 22 and the second cam 32. The switching piece 40 rotates in place relative to the bracket 10. The side walls of the convex lobes 41 are respectively in contact with the first notch 221 and the second notch 321. The dual-axis hinge body 100 has a first state in which at least one of the first cam 22 or the second cam 32 pushes the convex lobe 41 to make the switching piece 40 rotate in place, and a second state in which when one of the first cam 22 and the second cam 32 cannot continue to rotate, the switching piece 40 is pushed by the other one of the first cam 22 and the second cam 32.

[0034] Refer to Figures 5 - 9: Assume that initially, the biaxial hinge body 100 is not opened, the first shaft 20 is not restricted from rotating, while the second shaft 30 is restricted from rotating, such that one of the lobes 41 contacts the second notch 321. When the biaxial hinge body 100 is opened, the first rod 21 rotates relative to the bracket 10, and the first cam 22 is driven by the first rod 21 to push the lobe 41. At this moment, the biaxial hinge body 100 enters the first state, and the switching piece 40 rotates in place under the action of the lobe 41. At the same time, during the rotation of the switching piece 40, although the lobe 41 contacts the second cam 32, the second cam 32 is restricted, so that the lobe 41 cannot push the second cam 32 to rotate;

[0035] When the first shaft 20 continues to rotate until it can no longer rotate, the biaxial hinge body 100 enters the second state, and at least one of these lobes 41 contacts the first notch 221. Thereafter, the biaxial hinge body 100 rotates the second rod 31 relative to the bracket 10 and changes from the second state to the first state. The second rod 31 rotates relative to the bracket 10 and pushes at least one of these lobes 41, causing the switching piece 40 to rotate in place on the bracket 10. When the switching piece 40 is rotating, although these lobes 41 contact the first cam 22, due to the restriction of the first cam 22, these lobes 41 cannot push the first cam 22 to rotate. Thereafter, the second shaft 30 continues to rotate relative to the bracket 10 until the second rod 31 can no longer rotate, and the biaxial hinge body 100 is fully opened;

[0036] Once the biaxial hinge body 100 is to be closed, the second shaft 30 is actuated to rotate in the reverse direction relative to the bracket 10. At this time, the biaxial hinge body 100 returns from the second state to the first state, and the switching piece 40 rotates in place under the action of the second cam 32. When the second rod 31 can no longer rotate relative to the bracket 10, the biaxial hinge body 100 changes to the second state, and at least one of these lobes 41 contacts the second notch 321. The switching piece 40 is then pushed by the first cam 22. Thereafter, these lobes 41 are sequentially pushed by the first cam 22. At the same time, when the biaxial hinge body 100 is in the first state, the switching piece 40 rotates in place on the bracket 10. When the first rod 21 continues to rotate until it can no longer rotate relative to the bracket 10, the biaxial hinge body 100 is fully closed.

[0037] As can be seen from the above, when the switching piece 40 is pushed by the first shaft 20 and the second shaft 30, it only rotates on the bracket 10 and does not change its position on the bracket 10. At the same time, the switching piece 40 of the present invention is not implemented with a conventional torsion spring, which improves the problem that users need to overcome the acting force of the torsion spring additionally when operating the conventional hinge, which is not conducive to the operation of users. In addition, the biaxial hinge body 100 of the present invention further has the characteristics of simple structure and can specifically reduce the volume.

[0038] Reference Figures 1 - 5, the switching piece 40 has a continuous wavy surface 42 which is arranged along the periphery of the switching piece 40 and is used to form the convex lobes 41. The central angles 411 corresponding to the convex lobes 41 are equal, so that the configurations of the convex lobes 41 are the same.

[0039] The switching piece 40 forms an opening 43, and the opening 43 is arranged facing the assembly hole 13. The biaxial hinge body 100 further includes a pin 50. When assembled, the pin 50 sequentially passes through the opening 43 and the assembly hole 13 and is used to limit the switching piece 40 to only rotate in place relative to the bracket 10. Further, the aperture of the opening 43 is larger than the aperture of the assembly hole 13. In order for the pin 50 to be stably connected in the assembly hole 13 and the opening 43, the pin 50 includes a narrow diameter section 51 and a wide diameter section 52. The narrow diameter section 51 extends into the assembly hole 13, and the wide diameter section 52 continues the narrow diameter section 51 and extends into the opening 43.

[0040] Reference Figures 1 - 5 , the first cam 22 has a first arc surface 222 and a first plane 223. The first arc surface 222 contacts at least one of the convex lobes 41. When the first cam 22 rotates, the first arc surface 222 pushes at least one of the convex lobes 41. The first plane 223 connects both ends of the first arc surface 222, and the inclination directions of the first plane 223 are different to jointly form a first notch 221. In addition, the second cam 32 has a second arc surface 322 and a second plane 323. The second arc surface 322 contacts at least one of the convex lobes 41. When the second cam 32 rotates, the second arc surface 322 pushes at least one of the convex lobes 41. The second plane 323 connects both ends of the second arc surface 322, and the inclination directions of the first plane 223 are different to jointly form a second notch 321.

[0041] Reference Figures 10 - 12, in the present invention, to limit the rotation of the first shaft 20, the first shaft 20 includes a first auxiliary wheel 23. The first auxiliary wheel 23 is disposed on the first rod 21 and adjacent to the first cam 22. The first auxiliary wheel 23 rotates with the first rod 21. During the rotation process, the first auxiliary wheel 23 is blocked by the bracket 10, so that the first rod 21 cannot continue to rotate relative to the bracket 10. The first auxiliary wheel 23 has a first arc-shaped working surface 231, a first limiting plane 232 respectively connecting the first arc-shaped working surface 231, and a first connecting surface 233 connecting the first limiting plane 232 and opposite to the first arc-shaped working surface 231. The first arc-shaped working surface 231 does not interfere with the bracket 10 during the rotation of the first auxiliary wheel 23. The first limiting plane 232 is disposed parallel to the first auxiliary wheel 23. The first limiting plane 232 interferes with the bracket 10 during the rotation of the first auxiliary wheel 23, so that the first limiting plane 232 limits the first auxiliary wheel 23 to only rotate 180 degrees. In addition, the first connecting surface 233 interferes with the bracket 10 during the rotation of the first auxiliary wheel 23, thereby providing a limit to the rotation of the first rod 21. On the other hand, the present invention can also limit the rotation of the second shaft 30. The second shaft 30 includes a second auxiliary wheel 33. The second auxiliary wheel 33 is disposed on the second rod 31 and adjacent to the second cam 32. The second auxiliary wheel 33 rotates with the second rod 31. During the rotation process, the second auxiliary wheel 33 is blocked by the bracket 10, so that the second rod 31 cannot continue to rotate relative to the bracket 10. The second auxiliary wheel 33 has a second arc-shaped working surface 331, a second limiting plane 332 respectively connecting the second arc-shaped working surface 331, and a second connecting surface 333 connecting the second limiting plane 332 and opposite to the second arc-shaped working surface 331. The second arc-shaped working surface 331 does not interfere with the bracket 10 during the rotation of the second auxiliary wheel 33. The second limiting plane 332 is disposed on the second auxiliary wheel 33. The second limiting plane 332 interferes with the bracket 10 during the rotation of the second auxiliary wheel 33, so that the second limiting plane 332 limits the second auxiliary wheel 33 to only rotate 180 degrees. In addition, the second connecting surface 333 interferes with the bracket 10 during the rotation of the second auxiliary wheel 33, thereby providing a limit to the rotation of the second rod 31. The operating principle of the second auxiliary wheel 33 is the same as that of the first auxiliary wheel 23.

[0042] The bracket 10 forms the retaining walls 14. The retaining walls 14 are located on two opposite sides of the bracket 10 and face the first auxiliary wheel 23 and the second auxiliary wheel 33 respectively. One of the retaining walls 14 is used to limit the rotation of the first auxiliary wheel 23, and the other of the retaining walls 14 is used to limit the rotation of the second auxiliary wheel 33. More specifically, when one of the retaining walls 14 contacts the first arc-shaped working surface 231, it does not limit the rotation of the first rod 21, and when it contacts the first limiting plane 232, it provides a limit to the first rod 21. Similarly, when the other of the retaining walls 14 contacts the second arc-shaped working surface 331, it does not limit the rotation of the second rod 31, and when it contacts the second limiting plane 332, it provides a limit to the second rod 31.

[0043] Each of the retaining walls 14 has a rotation-permitted section 141 and a rotation-limiting section 142. The rotation-permitted sections 141 of the retaining walls 14 are respectively used to contact the first arc-shaped working surface 231 and the second arc-shaped working surface 331 without restricting the first arc-shaped working surface 231 and the second arc-shaped working surface 331. The rotation-limiting sections 142 are located at both ends of the rotation-permitted section 141. The rotation-limiting sections 142 contact the first limiting plane 232 or the second limiting plane 332 and provide a stopping function for the first arc-shaped working surface 231 and the second arc-shaped working surface 331.

[0044] The bracket 10 of the present invention includes a base 15 and a boss 16. The base 15 is provided with a first through hole 11 and a second through hole 12. The boss 16 is disposed on the base 15. The boss 16 and the base 15 together form an assembly hole 13. One of the retaining walls 14 is respectively formed on one side of the boss 16 facing the first auxiliary wheel 23 and on one side facing the second auxiliary wheel 33.

[0045] In order to increase the torque of the biaxial hinge body 100, the biaxial hinge body 100 has at least a connecting piece 60 and two torsion spring blade groups 61. The connecting piece 60 is disposed on one side of the bracket 10 and connects the first shaft 20. The torsion spring blade groups 61 are located on one side of the bracket 10 and face the connecting piece 60. The torsion spring blade groups 61 are respectively located on the first shaft 20 and the second shaft 30.

[0046] The switching piece 40 has a continuous wavy surface 42 disposed along the periphery of the switching piece 40 and used to form the convex lobes 41.

[0047] The central angles 411 corresponding to the convex lobes 41 are equal.

[0048] The switching piece 40 forms an opening 43 facing the assembly hole 13. The biaxial hinge body 100 includes a pin 50 that sequentially penetrates the opening 43 and the assembly hole 13 and restricts the switching piece 40 to only rotate in place.

[0049] The aperture of the opening 43 is larger than that of the assembly hole 13. The pin 50 includes a narrow-diameter section 51 extending into the assembly hole 13 and a wide-diameter section 52 that continues the narrow-diameter section 51 and extends into the opening 43.

[0050] The first cam 22 has a first arc surface 222 that contacts the lobe 41, and first flat surfaces 223 that are respectively connected to both ends of the first arc surface 222 and jointly form a first notch 221. The second cam 32 has a second arc surface 322 that contacts the lobe 41, and second flat surfaces 323 that are respectively connected to both ends of the second arc surface 322 and jointly form a second notch 321.

[0051] The first shaft 20 includes a first auxiliary wheel 23 that rotates with the first rod body 21 and restricts the rotation locus of the first rod body 21 on the bracket 10. The second shaft 30 includes a second auxiliary wheel 33 that rotates with the second rod body 31 and restricts the rotation locus of the second rod body 31 on the bracket 10.

[0052] The bracket 10 forms retaining walls 14 that respectively face the first auxiliary wheel 23 and the second auxiliary wheel 33 and restrict the rotation of the first auxiliary wheel 23 and the second auxiliary wheel 33.

[0053] The bracket 10 includes a base 15 having a first through hole 11 and a second through hole 12, and a boss 16 provided on the base 15 and jointly forming an assembly hole 13 with the base 15. One of the retaining walls 14 is respectively formed on one side of the boss 16 facing the first auxiliary wheel 23 and one side of the second auxiliary wheel 33.

[0054] The biaxial hinge body 100 has a connecting piece 60 provided on one side of the bracket 10 and connecting the first shaft 20 and the second shaft 30, and a torsion spring group 61 provided on one side of the bracket 10 and respectively located on the first shaft 20 and the second shaft 30.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved. Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-axis hinge that switches and rotates sequentially, comprising a double-axis hinge body (100), a bracket (10), a first axis (20), a second axis (30), and a switching piece (40), characterized in that, The side wall of the bracket (10) is provided with a first through hole (11), a second through hole (12) separated from the first through hole (11), and an assembly hole (13) located between the first through hole (11) and the second through hole (12). The first shaft (20) includes a first rod body (21) that penetrates into the first through hole (11) and rotates relative to the bracket (10), and a first cam (22) sleeved outside the first rod body (21) and rotating therewith. A first notch (221) is formed on the outer wall of the first cam (22). The second shaft (30) is horizontally arranged with the first shaft (20). The second shaft (30) includes a second rod body (31) that penetrates into the second through hole (12) and can rotate relative to the bracket (10), and a second cam (32) sleeved outside the second rod body (31) and rotating therewith. A second notch (321) is formed on the outer wall of the second cam (32). The switching piece (40) is arranged at the right end of the assembly hole (13). Convex lobes (41) that are uniformly arranged on the outside of the switching piece (40) and surround the periphery of the switching piece (40) are formed. The convex lobes (41) are engaged with the first cam (22) and the second cam (32). The switching piece (40) rotates in place relative to the bracket (10), and the side walls of the convex lobes (41) are respectively in contact with the first notch (221) and the second notch (321). The first cam (22) has a first arc surface (222) in contact with the convex lobe (41) and first flat surfaces (223) respectively connecting both ends of the first arc surface (222) and jointly forming the first notch (221). The second cam (32) has a second arc surface (322) in contact with the convex lobe (41) and second flat surfaces (323) respectively connecting both ends of the second arc surface (322) and jointly forming the second notch (321). The first shaft (20) includes a first auxiliary wheel (23) that rotates with the first rod body (21) and restricts the rotation trajectory of the first rod body (21) on the bracket (10). The second shaft (30) includes a second auxiliary wheel (33) that rotates with the second rod body (31) and restricts the rotation trajectory of the second rod body (31) on the bracket (10).

2. The double-axis hinge that rotates in sequential switching according to claim 1, wherein: The switching piece (40) has a continuous wave surface (42) arranged along the periphery of the switching piece (40) and used for forming the convex lobes (41).

3. The double-axis hinge that rotates and switches sequentially according to claim 1, wherein: The central angles (411) corresponding to the convex lobes (41) are equal respectively.

4. A double-axis hinge that rotates in sequence and switches as claimed in claim 1, characterized in that: The forming surface of the switching piece (40) faces the opening (43) of the assembly hole (13). The double-shaft hinge body (100) includes a pin (50) that sequentially penetrates into the opening (43) and the assembly hole (13) and restricts the switching piece (40) to only rotate in place.

5. The double-axis hinge that rotates in sequential switching according to claim 4, characterized in that: The aperture of the opening (43) is larger than that of the assembly hole (13). The pin (50) includes a narrow-diameter section (51) extending into the assembly hole (13) and a wide-diameter section (52) connected to the narrow-diameter section (51) and extending into the opening (43).

6. A dual-axis hinge that rotates in sequential switching according to claim 1, characterized in that: The bracket (10) forms retaining walls (14) respectively facing the first auxiliary wheel (23) and the second auxiliary wheel (33) and restricting the rotation of the first auxiliary wheel (23) and the second auxiliary wheel (33).

7. A double-axis hinge that rotates in sequential switching according to claim 1, characterized in that: The bracket (10) includes a base (15) having a first through hole (11) and a second through hole (12), and a boss (16) disposed on the base (15) and integrally formed with the base (15) to form an assembly hole (13). One of the retaining walls (14) is formed on one side of the boss (16) facing the first auxiliary wheel (23) and on one side of the second auxiliary wheel (33).

8. A dual-axis hinge that rotates in sequential switching according to claim 1, characterized in that: The biaxial hinge body (100) has a connecting piece (60) disposed on one side of the bracket (10) and connecting the first shaft (20) and the second shaft (30), and a torsion spring piece group (61) disposed on one side of the bracket (10) and located on the first shaft (20) and the second shaft (30) respectively.

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