Double-shaft axial switching hinge and opening and closing device with same

Abstract

The utility model provides a biaxial axial switching hinge and opening / closing device with the same, the biaxial axial switching hinge comprises: a switching seat, a first shaft group and a second shaft group, the switching seat is provided with a first shaft hole and a second shaft hole which are parallel to each other, the first shaft group comprises a first shaft body, a limiting part and an abdicating part, the second shaft group comprises a second shaft body and a clamping part, and the first shaft hole and the second shaft hole are parallel to each other. The second shaft body penetrates through the second shaft hole, the clamping part is connected to the second shaft body and is driven by the second shaft body, the limiting part and the receding part are adjacent to the two sides of the first shaft hole respectively, and the receding part interferes with the switching base within a preset rotation angle to prevent the switching base from moving in the axial direction of the first shaft body; the interference is released after the predetermined rotation angle is reached, the switching seat is allowed to move in the axial direction, the clamping part and the switching seat abut against each other in the oblique direction, and the oblique direction comprises an axial vector and a vector in the peripheral direction of the second shaft body. According to the double-shaft hinge, the problem that the spiral guide groove is difficult to precisely machine is solved, the miniaturization of the double-shaft hinge is achieved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a hinge and an opening and closing device, and more particularly to a double-axis axial switching hinge and an opening and closing device having the same. Background Art

[0002] Devices such as notebook computers and foldable mobile phones have a structure in which a cover and a base can be relatively opened and closed, and the cover and the base are driven to swing respectively through two rods that penetrate the double-axis hinge respectively.

[0003] The problem with this design is that, taking patent publication number CN109882497A as an example, the volume of the biaxial hinge is relatively large, which is not conducive to the heat dissipation of the mechanism, and a spiral guide groove needs to be set on the shaft to guide the movement of the component. However, it is quite difficult and time-consuming to machine a precise spiral guide groove on the shaft or sleeve of a cylinder. If the biaxial hinge is to be further miniaturized, the difficulty and cost of processing will increase significantly. Utility Model Content

[0004] Therefore, in order to solve various problems of the existing double-axis hinges, the utility model provides a double-axis axial switching hinge and an opening and closing device having the same.

[0005] To achieve the above-mentioned and other purposes, the utility model proposes a double-axis axial switching hinge, which includes: a switching seat, having a first axial hole and a second axial hole parallel to each other; a first axis group, including a first axis body, a limiting portion and a giving portion, the first axis body passes through the first axial hole, the limiting portion and the giving portion are respectively connected to the first axis body and driven by the first axis body; a second axis group, including a second axis body and a latch portion, the second axis body passes through the second axial hole, the latch portion is connected to the second axis body and driven by the second axis body; wherein the limiting portion and the giving portion are respectively adjacent to the two sides of the first axial hole, the The limiting portion and the switch seat are allowed to rotate relative to each other within a predetermined rotation angle. The giving portion interferes with the switch seat within the predetermined rotation angle to block the axial movement of the switch seat along the first shaft. The interference is released after reaching the predetermined rotation angle to allow the switch seat to move along the axial direction. The latch portion and the switch seat abut each other along an oblique direction, and the oblique direction includes the axial vector and the vector in the peripheral direction of the second shaft. When the giving portion interferes with the switch seat, the latch portion and the switch seat are restricted from relative rotation. When the giving portion and the switch seat are released from interference, the latch portion is allowed to rotate relative to the switch seat.

[0006] In one embodiment of the utility model, the switch seat is provided with a switch seat limit stop portion corresponding to the limit portion, the limit portion and the projection of the switch seat limit stop portion in the axial direction at least partially overlap, and the notch of the limit portion determines the predetermined rotation angle.

[0007] In an embodiment of the present invention, the first shaft assembly further includes a first sleeve, the limiting portion is disposed on the first sleeve, and the first shaft body passes through the first sleeve and the first shaft hole.

[0008] In one embodiment of the present invention, the switch seat is provided with a switch seat stopper corresponding to the stopper, and the stopper has a groove shaped to accommodate the switch seat stopper.

[0009] In an embodiment of the present invention, the first shaft assembly further includes a stop cam, the yielding portion is disposed on the stop cam, and the first shaft body passes through the first shaft hole and the stop cam.

[0010] In one embodiment of the present invention, the second shaft assembly further includes a second sleeve, the latch portion is disposed on the second sleeve, the second sleeve is engaged with the switch seat along the circumferential direction of the second shaft body, and the second shaft body passes through the second sleeve and the second shaft hole.

[0011] In one embodiment of the present invention, the second shaft assembly further includes a blocking portion, the latch portion and the blocking portion are respectively adjacent to two sides of the second shaft hole, and the blocking portion limits the maximum distance that the switch seat moves along the axial direction.

[0012] In one embodiment of the utility model, it also includes a cell round seat, the first shaft body has a first circular shaft section and a first special-shaped section connected to the first circular shaft section, the second shaft body has a second circular shaft section and a second special-shaped section connected to the second circular shaft section, the cell round seat is sleeved on the first circular shaft section and the second circular shaft section, the limiting portion is arranged on the first special-shaped section, and the locking portion is arranged on the second special-shaped section.

[0013] In an embodiment of the present invention, the cell seat is provided with a cell seat stop portion corresponding to the limiting portion, and the limiting portion and the projection of the cell seat stop portion in the axial direction at least partially overlap.

[0014] The utility model further provides an opening and closing device, which comprises: a base; an upper cover; and the double-axis axial switching hinge as described above, wherein the first axis group is connected to the upper cover, and the second axis group is connected to the base.

[0015] Thus, the dual-axis axial switching hinge and the opening and closing device with the same can solve the problem of difficult precision machining of the spiral guide groove, achieve miniaturization of the dual-axis hinge, and reduce production costs. Moreover, the predetermined rotation angle range can be freely changed by simply changing the design of the limit part, the yield part and / or the latch part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of an opening and closing device with a double-axis axial switching hinge according to an embodiment of the utility model.

[0017] Figure 2 It is an exploded view of a double-axis axial switching hinge according to an embodiment of the utility model.

[0018] Figure 3A It is a three-dimensional diagram of a dual-axis axial switching hinge at the 0 degree stage according to an embodiment of the utility model.

[0019] Figure 3B for Figure 3A Front view of.

[0020] Figure 3C for Figure 3A Rear view of.

[0021] Figure 3D It is a side view schematic diagram of an opening and closing device with a double-axis axial switching hinge at the 0 degree stage according to an embodiment of the utility model.

[0022] Figure 4A It is a three-dimensional diagram of a double-axis axial switching hinge at the 160-degree stage according to an embodiment of the utility model.

[0023] Figure 4B for Figure 4A Front view of.

[0024] Figure 4C for Figure 4A Rear view of.

[0025] Figure 4D It is a side view schematic diagram of an opening and closing device with a double-axis axial switching hinge at the 160-degree stage according to an embodiment of the utility model.

[0026] Figure 5A It is a three-dimensional diagram of a double-axis axial switching hinge at the 180-degree stage according to an embodiment of the utility model.

[0027] Figure 5B for Figure 5A Front view of.

[0028] Figure 5C for Figure 5A Rear view of.

[0029] Figure 5D It is a side view schematic diagram of an opening and closing device with a double-axis axial switching hinge at the 180-degree stage according to an embodiment of the utility model.

[0030] Figure 6 It is a schematic diagram of the oblique direction.

[0031] Figure 7 It is a cross-sectional schematic diagram of the switching seat.

[0032] Reference numerals

[0033] 100 Double axis axial switching hinge

[0034] 200 Opening and closing device

[0035] 1 First axis group

[0036] 11. First axis

[0037] 111 First circular shaft segment

[0038] 112 First special-shaped segment

[0039] 12 First sleeve

[0040] 121 Limiting part

[0041] 121a First limiter

[0042] 121b Second limiter

[0043] 13 Stop cam

[0044] 131 Give way

[0045] 131a Groove

[0046] 14 Buckle

[0047] 2 Second axis group

[0048] 21 Second axis

[0049] 211 Second circular shaft segment

[0050] 212 Second special-shaped segment

[0051] 22 Second sleeve

[0052] 221 Clamp

[0053] 23 Third sleeve

[0054] 231 Resistance Department

[0055] 24 Buckle

[0056] 3 Switching seat

[0057] 31 First axis hole

[0058] 311 Switching seat limit stop

[0059] 312 Switching seat stopper

[0060] 32 Second axis hole

[0061] 4-cell round seat

[0062] 41 Cell seat stopper

[0063] 5 Upper cover

[0064] 6 Base

[0065] A-A' Hatch Line

[0066] B-B' hatch

[0067] d1 Axial

[0068] d2 Peripheral direction

[0069] d3 oblique direction DETAILED DESCRIPTION

[0070] In order to fully understand the present utility model, the present utility model is described in detail through the following specific embodiments and the accompanying drawings. Those skilled in the art can understand the purpose, features and effects of the present utility model from the contents disclosed in this specification. It should be noted that the present utility model can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present utility model. The following implementation methods will further explain the relevant technical content of the present utility model in detail, but the disclosed content is not intended to limit the scope of the patent application of the present utility model. The description is as follows:

[0071] like Figure 1 and Figure 2 As shown, the opening and closing device 200 of the embodiment of the utility model comprises a base 6, an upper cover 5 and a double-axis axial switching hinge 100. The double-axis axial switching hinge 100 can be provided in a single group or multiple groups on the base 6 and the upper cover 5. In this embodiment, two groups of double-axis axial switching hinges 100 are symmetrically provided on the base 6 and the upper cover 5.

[0072] like Figure 2 and Figure 3A As shown, the double-axis axial switching hinge 100 comprises: a first axis group 1, a second axis group 2 and a switching seat 3. The first axis group 1 is connected to the upper cover 5, and the second axis group 2 is connected to the base 6. The rotational force exerted on the first axis group 1 and the second axis group 2 comes from the relative rotation of the upper cover 5 and the base 6 driven by external force.

[0073] The switch base 3 has a first shaft hole 31 and a second shaft hole 32 which are parallel to each other.

[0074] The first shaft assembly 1 includes a first shaft body 11, a stopper 121 and a clearance portion 131. The first shaft body 11 passes through the first shaft hole 31, and the stopper 121 and the clearance portion 131 are respectively connected to the first shaft body 11 and driven by the first shaft body 11. The stopper 121 and the clearance portion 131 can be linked to the first shaft body 11 in a variety of ways, such as being directly formed on the first shaft body 11 or indirectly linked through a combination of mechanisms. The detailed design of the stopper 121 and the clearance portion 131 will be described in subsequent embodiments.

[0075] The second shaft assembly 2 includes a second shaft body 21 and a latching portion 221. The second shaft body 21 passes through the second shaft hole 32, so the first shaft body 11 and the second shaft body 21 are actually parallel. The latching portion 221 is connected to the second shaft body 21 and driven by the second shaft body 21. The latching portion 221 can also be linked to the second shaft body 21 in a variety of ways, such as being directly formed on the second shaft body 21 or indirectly linked through a combination of mechanisms. The detailed design of the latching portion 221 will be described in subsequent embodiments.

[0076] like FIG. 3A to FIG. 3D As shown, the limiting portion 121 and the giving portion 131 are respectively adjacent to the two sides of the first shaft hole 31. The limiting portion 121 and the switching seat 3 are allowed to rotate relative to each other within a predetermined rotation angle. A common practice is that the limiting portion 121 and the switching seat 3 do not interfere with each other within a certain relative rotation angle range, but when the predetermined rotation angle is reached, the limiting portion 121 and the switching seat 3 interfere with each other, so that the entire first shaft group 1 cannot continue to rotate relative to each other. In this embodiment, 0 degrees (the upper cover 5 and the base 6 are parallel to each other) is used as the starting angle, and 0 degrees to 160 degrees are the predetermined rotation angles; but in fact, 0 degrees may not be used as the starting angle, and the predetermined rotation angle range can change the design of the limiting portion 121 and the switching seat 3 as needed.

[0077] The yielding portion 131 interferes with the switch seat 3 within a predetermined rotation angle, blocking the switch seat 3 from moving axially along the first shaft body 11. That is, before the relative rotation angle between the first shaft assembly 1 and the switch seat 3 reaches a predetermined rotation angle (160 degrees in this embodiment), the axial movement of the switch seat 3 along the first shaft body 11 is locked. The interference between the yielding portion 131 and the switch seat 3 is released after the switch seat 3 rotates to the predetermined rotation angle, allowing the switch seat 3 to move axially.

[0078] The latch portion 221 and the switch seat 3 abut against each other along an oblique direction d3. The oblique direction d3 includes the vector of the axial direction d1 and the vector of the peripheral direction d2 of the second shaft body 21 (see Figure 6). That is to say, if the second shaft body 21 is to rotate relative to the switch seat 3, a vector of the axial direction d1 must be applied. Within the predetermined rotation angle, the movement of the switch seat 3 along the axial direction d1 is locked by the yielding portion 131 (because the first shaft body 11 is parallel to the second shaft body 21). In other words, under the premise that the yielding portion 131 interferes with the switch seat 3, the latching portion 221 and the switch seat 3 are restricted from relative rotation, so that the entire second shaft assembly 2 cannot rotate relative to the switch seat 3 within the predetermined rotation angle.

[0079] like FIG. 4A to FIG. 4D As shown, when the relative angle between the first shaft assembly 1 and the switch seat 3 reaches the predetermined rotation angle, the interference between the displacement portion 131 and the switch seat 3 is eliminated, and the switch seat 3 can move along the axial direction d1, so the latch portion 221 is allowed to rotate relative to the switch seat 3. FIG. 5A to FIG. 5D As shown, since the latch portion 221 and the switch seat 3 abut against each other along the oblique direction d3, when the second shaft body 21 drives the latch portion 221 to rotate relative to the switch seat 3, it also pushes the switch seat 3 to move along the axial direction d1. Therefore, after the first shaft assembly 1 is locked and cannot continue to rotate, the second shaft assembly 2 can continue to rotate, thereby expanding the relative angle between the upper cover 5 and the base 6.

[0080] In summary, the dual-axis axial switching hinge 100 and the opening and closing device 200 of the present invention can solve the problem of difficult precision machining of the spiral guide groove, achieve miniaturization of the dual-axis hinge, and reduce production costs. Moreover, the predetermined rotation angle range can be freely changed by simply changing the design of the limit portion 121, the clearance portion 131 and / or the latch portion 221.

[0081] Furthermore, in this embodiment, if Figure 3C and Figure 4C As shown, the switch seat 3 is provided with a switch seat limit stop 311 corresponding to the limit portion 121. The projections of the limit portion 121 and the switch seat limit stop 311 in the axial direction at least partially overlap, that is, the limit portion 121 and the switch seat limit stop 311 will have mechanical interference in a specific range. The notch of the limit portion 121 determines the range of the predetermined rotation angle.

[0082] Furthermore, in the present embodiment, the first shaft assembly 1 further includes a first sleeve 12, and the limiting portion 121 is provided on the first sleeve 12 in the form of a bump and a notch. However, the present invention is not limited thereto, and the limiting portion 121 is not necessarily in the form of a bump and a notch. The first shaft body 11 passes through the first sleeve 12 and the first shaft hole 31. In addition to being convenient for processing and manufacturing, the first sleeve 12 only requires the sleeve to be replaced if the aforementioned predetermined rotation angle is to be changed, without the need to replace the first shaft body 11. However, the present invention is not limited thereto, and the limiting portion 121 may also be directly formed integrally on the surface of the first shaft body 11 without the need for the first sleeve 12.

[0083] Furthermore, in this embodiment, if Figure 2 , Figure 4C and Figure 5C As shown, the switch seat 3 is provided with a switch seat stopper 312 corresponding to the stopper 131, and the stopper 131 has a groove 131a shaped to accommodate the switch seat stopper 312. When the groove 131a is aligned with the switch seat stopper 312, the switch seat 3 can move in the axial direction; at other times, the non-groove 131a portion of the stopper 131 will block the switch seat 3 from moving in the axial direction. However, the present invention is not limited to this, and other mechanisms can be designed to limit the axial movement of the switch seat 3 within a predetermined rotation angle.

[0084] Furthermore, in this embodiment, the first shaft assembly 1 further includes a stop cam 13, and the yielding portion 131 is disposed on the stop cam 13. The first shaft body 11 passes through the first shaft hole 31 and the stop cam 13. In addition to being convenient for processing and manufacturing, the stop cam 13 only needs to be replaced if the aforementioned predetermined rotation angle is to be changed, without replacing the first shaft body 11. However, the present invention is not limited thereto, and the yielding portion 131 can also be directly formed integrally on the surface of the first shaft body 11 without the stop cam 13.

[0085] Furthermore, in this embodiment, if Figures 2 to 3C As shown, the second shaft assembly 2 further includes a second sleeve 22. The latch portion 221 is disposed on the second sleeve 22, and the second shaft body 21 passes through the second sleeve 22 and the second shaft hole 32. In addition to being convenient for processing and manufacturing, the second sleeve 22 can be replaced without replacing the second shaft body 21 if the ratio of the relative rotation and axial movement of the switching seat 3 is to be changed. However, the utility model is not limited thereto, and the latch portion 221 can also be directly formed integrally on the surface of the second shaft body 21 without the need for the second sleeve 22.

[0086] In this embodiment, the second sleeve 22 and the switch seat 3 mesh along the circumferential direction of the second shaft 21, similar to the structure of gears meshing with each other. However, the utility model is not limited thereto, and the aforementioned abutment between the latch portion 221 and the switch seat 3 along the oblique direction d3 can be achieved by other mechanism designs.

[0087] Furthermore, in this embodiment, if Figure 2 , FIG. 5A to FIG. 5CAs shown, the second shaft assembly 2 further includes a blocking portion 231. The latch portion 221 and the blocking portion 231 are respectively adjacent to the two sides of the second shaft hole 32. The blocking portion 231 limits the maximum distance that the switch seat 3 moves along the axial direction d1. In this embodiment, the blocking portion 231 is arranged at the axial position where the switch seat 3 is pushed to 180 degrees, that is, the blocking portion 231 limits the maximum relative rotation range of the switch seat 3. The position of the blocking portion 231 is determined by the design of the latch portion 221. Preferably, the blocking portion 231 also abuts against the switch seat 3 in an oblique direction, so that the switch seat 3 can retreat along the original path and abut against the latch portion 221. In this embodiment, the second shaft assembly 2 further includes a third sleeve 23, and the blocking portion 231 is arranged on the third sleeve 23. The reason is as mentioned above, the design of the sleeve can be easy to process and replace, but the blocking portion 231 can also be formed integrally on the surface of the second shaft body 21 without the need for the third sleeve 23.

[0088] Furthermore, in this embodiment, if Figure 2 As shown, the double-axis axial switching hinge 100 also includes a circular seat 4. The first shaft body 11 has a first circular shaft segment 111 and a first special-shaped segment 112 connected to the first circular shaft segment 111. The second shaft body 21 has a second circular shaft segment 211 and a second special-shaped segment 212 connected to the second circular shaft segment 211. The circular seat 4 is sleeved on the first circular shaft segment 111 and the second circular shaft segment 211 to provide torque. The limiting portion 121 and the giving portion 131 are arranged on the first special-shaped segment 112 (if there is a first sleeve 12 and a stop cam 13, they are sleeved on the first special-shaped segment 112), and the latch portion 221 is arranged on the second special-shaped segment 212 (if there is a second sleeve 22, it is sleeved on the second special-shaped segment 212). The purpose of the special-shaped segment is to easily drive the first sleeve 12, the stop cam 13 and the second sleeve 22 (see Figure 4A The section line A-A' and Figure 5A Section line B-B').

[0089] In this embodiment, if Figure 2 , Figure 3C and Figure 4C As shown, the cell round seat 4 is provided with a cell round seat stopper 41 corresponding to the limiting portion 121, and the projections of the limiting portion 121 and the cell round seat stopper 41 in the axial direction at least partially overlap. In detail, the limiting portion 121 can be further divided into a first limiting portion 121a that interferes with the switching seat limiting stopper 311, and a second limiting portion 121b that interferes with the cell round seat stopper 41. In other words, the second limiting portion 121b and the cell round seat stopper 41 will have mechanical interference in a specific range. The notch of the second limiting portion 121b determines the range of the predetermined rotation angle. The first limiting portion 121a and the second limiting portion 121b can be made on the same structure, facing the switching seat limiting stopper 311 and the cell round seat stopper 41 respectively, so as to facilitate processing and manufacturing and make the range of the predetermined rotation angle consistent.

[0090] Furthermore, in this embodiment, if the stop cam 13 and the third sleeve 23 at the ends of the first special-shaped segment 112 and the second special-shaped segment 212 are to be prevented from falling off, buckles 14 and 24 can be respectively provided at the ends of the first special-shaped segment 112 and the second special-shaped segment 212. The buckles 14 and 24 are elastic and can tightly hold the first special-shaped segment 112 and the second special-shaped segment 212 to prevent the stop cam 13 and the third sleeve 23 from sliding off.

[0091] Furthermore, in this embodiment, if Figure 7 Therefore, the cross section of the switch base 3 is not elliptical, and the connection between the first shaft hole 31 and the second shaft hole 32 is not the shortest distance. In this way, more space can be left between the first shaft group 1 and the second shaft group 2, which is beneficial for heat dissipation of the upper cover 5 and / or the base 6.

[0092] The present invention has been disclosed in the above embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the embodiments should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope of the patent application.

Claims

1. A double-axis axial switching hinge, characterized in that: Include: A switching seat having a first axial hole and a second axial hole parallel to each other; A first shaft assembly, comprising a first shaft body, a limiting portion and a yielding portion, wherein the first shaft body passes through the first shaft hole, and the limiting portion and the yielding portion are respectively connected to the first shaft body and driven by the first shaft body; A second shaft assembly, comprising a second shaft body and a latch portion, wherein the second shaft body passes through the second shaft hole, and the latch portion is connected to the second shaft body and driven by the second shaft body; The limiting portion and the giving way portion are respectively adjacent to two sides of the first shaft hole, and the limiting portion and the switching seat are allowed to rotate relative to each other within a predetermined rotation angle. The yielding portion interferes with the switch seat within the predetermined rotation angle, blocking the switch seat from moving along the axial direction of the first shaft body. The interference is released after reaching the predetermined rotation angle, allowing the switch seat to move along the axial direction. The latch portion and the switch seat abut against each other along an oblique direction, and the oblique direction includes an axial vector and a vector in the peripheral direction of the second shaft body. When the yielding portion interferes with the switch seat, the latch portion and the switch seat are restricted from relative rotation. When the interference between the yielding portion and the switching seat is eliminated, the latching portion is allowed to rotate relative to the switching seat.

2. The double-axis axial switching hinge according to claim 1, characterized in that: The switch seat is provided with a switch seat limit stop portion corresponding to the limit portion, the limit portion and the projection of the switch seat limit stop portion in the axial direction at least partially overlap, and the notch of the limit portion determines the predetermined rotation angle.

3. The double-axis axial switching hinge according to claim 1 or 2, characterized in that: The first shaft assembly further includes a first sleeve, the limiting portion is disposed on the first sleeve, and the first shaft body passes through the first sleeve and the first shaft hole.

4. The double-axis axial switching hinge according to claim 1, characterized in that: The switch seat is provided with a switch seat yielding stop portion corresponding to the yielding portion, and the yielding portion has a groove with a shape capable of accommodating the switch seat yielding stop portion.

5. The double-axis axial switching hinge according to claim 1 or 4, characterized in that: The first shaft assembly further includes a stop cam, the yielding portion is arranged on the stop cam, and the first shaft body passes through the first shaft hole and the stop cam.

6. The double-axis axial switching hinge according to claim 1, characterized in that: The second shaft assembly also includes a second sleeve. The latch portion is disposed on the second sleeve. The second sleeve is engaged with the switch seat along the peripheral direction of the second shaft body. The second shaft body passes through the second sleeve and the second shaft hole.

7. The double-axis axial switching hinge according to claim 1, characterized in that: The second shaft assembly further includes a blocking portion. The latch portion and the blocking portion are respectively adjacent to two sides of the second shaft hole. The blocking portion limits the maximum distance that the switch seat moves along the axial direction.

8. The double-axis axial switching hinge according to claim 1, characterized in that: It also includes a cell round seat, the first shaft body has a first circular shaft section and a first special-shaped section connected to the first circular shaft section, the second shaft body has a second circular shaft section and a second special-shaped section connected to the second circular shaft section, the cell round seat is sleeved on the first circular shaft section and the second circular shaft section, the limiting portion is arranged on the first special-shaped section, and the locking portion is arranged on the second special-shaped section.

9. The double-axis axial switching hinge according to claim 8, characterized in that: The cell round seat is provided with a cell round seat stop portion corresponding to the limiting portion, and the limiting portion and the projection of the cell round seat stop portion in the axial direction at least partially overlap.

10. An opening and closing device, characterized in that: Include: a base; a top cover; and According to the double-axis axial switching hinge of claim 1, the first axis group is connected to the upper cover, and the second axis group is connected to the base.

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