CN220791761U - Double-shaft alternate switching turnover structure - Google Patents

Abstract

The double-shaft alternate switching turnover structure comprises a first rotating piece, wherein a first rotating shaft of the first rotating piece is connected with a first clamping wheel in a synchronous rotating mode, and a first clamping part is arranged on one side surface of the first clamping wheel; a second rotating shaft of the second rotating piece is connected with a second clamping wheel in a synchronous rotating mode, and one side surface of the second clamping wheel is provided with a second clamping part; the two ends of the connecting seat are respectively provided with a first shaft hole and a second shaft hole so as to be respectively pivoted with the first rotating shaft and the second rotating shaft; the switching piece is pivoted with the connecting seat in a relatively swinging mode and is positioned between the first shaft hole and the second shaft hole, one end of the switching piece is provided with a first propping part and a second propping part, the first propping part is used for propping against one side surface of the first clamping wheel or limiting the first clamping part, and the second propping part is used for propping against one side surface of the second clamping wheel or limiting the second clamping part.

Description

Double-shaft alternate switching turnover structure

Technical Field

The present utility model relates to a dual-axis alternating switching structure, and more particularly to a dual-axis alternating switching structure mounted on a foldable electronic device capable of being opened and closed.

Background

A general folding electronic device, for example: a notebook computer, a tablet computer or a mobile phone and the like are mainly connected with a first plate body and a second plate body of an electronic device respectively through a single-axis hinge or a double-axis hinge. The first plate body can be the upper cover of installation display screen, and the second plate body can be the base of installation spare part, battery and keyboard, and first plate body can be closed or overturn to 360 degrees from 0 degrees for the second plate body.

As shown in taiwan patent document of "dual-axis alternating turnover structure" with bulletin number TWM614100U, a dual-axis alternating switching turnover structure is shown, wherein a first rotating member and a second rotating member are respectively connected with a first bracket and a second bracket through a first connecting part and a second connecting part, and are respectively connected with a first clamping wheel and a second clamping wheel through a first rotating shaft and a second rotating shaft; the two ends of the connecting seat are respectively pivoted with a first rotating shaft and a second rotating shaft, the connecting seat comprises a first plate body and a second plate body which are arranged in parallel at intervals, and one side surface of the first plate body is provided with at least one first guide groove; the switching piece is connected and positioned between the first plate body and the second plate body in a relatively arc-shaped swinging mode, and the two ends of the switching piece are provided with a first propping part and a second propping part for propping and limiting the first clamping part and the second clamping part; one side of the switching piece is provided with at least one first guide rod for being correspondingly limited in at least one first guide groove; and the at least one elastic ring is sleeved on the outer periphery of the at least one first guide rod. However, because of space limitation, the switching mechanism cannot be arranged on the two-axis connecting line, and when the switching mechanism is actually switched to be used, the switching force and the lateral force of the switching mechanism are higher than each other, so that the switching mechanism is easy to have obvious abnormal sound and pause when the switching mechanism is turned over.

Disclosure of Invention

In view of this, the present utility model has been made in order to provide a structure different from the prior art and to improve the above-mentioned drawbacks, and the experience of the creator for many years and the continuous development and improvement.

The utility model aims to provide a double-shaft alternate switching turnover structure, which can solve the problem that the traditional model has obvious abnormal sound and pause feeling in the turnover process when in actual switching use, and can improve the overall stability by changing different switching modes so as to prevent the abnormal sound and improve the switching pause feeling caused by lateral force.

In order to achieve the above-mentioned object, the dual-axis alternate switching turnover structure of the present utility model comprises a first rotating member, a second rotating member, a connecting seat and a switching member. The first rotating piece comprises a first rotating shaft which is connected with a first clamping wheel in a synchronous rotating mode, and a side surface of the first clamping wheel is provided with a first clamping part; the second rotating piece comprises a second rotating shaft which is connected with a second clamping wheel in a synchronous rotating mode, and one side surface of the second clamping wheel is provided with a second clamping part; one end of the connecting seat is provided with a first shaft hole for pivoting the first rotating shaft, and the other end of the connecting seat is provided with a second shaft hole for pivoting the second rotating shaft; the switching piece is pivoted with the connecting seat in a relatively swinging mode, the switching piece is positioned between the first shaft hole and the second shaft hole, and one end of the switching piece is provided with a first propping part for propping against one side surface of the first clamping wheel or limiting the first clamping part; one end of the switching piece is provided with a second propping part for propping against one side surface of the second clamping wheel or limiting the second clamping part.

When in use, the first rotating piece further comprises a first connecting part, one end of the first rotating shaft is combined with the first connecting part, and the first connecting part is connected with a first bracket; the second rotating piece further comprises a second connecting part, one end of the second rotating shaft is combined with the second connecting part, and the second connecting part is connected with a second bracket.

When the rotary device is in use, one side surface of the first clamping wheel is also provided with at least one first stop part, one side surface of the connecting seat is provided with at least one first stop part, and the at least one first stop part correspondingly presses against the at least one first stop part so as to limit the rotation angle of the first rotary piece.

When in implementation, one side surface of the first clamping wheel is provided with a first sector block far away from the one side surface, and two end surfaces of the first sector block are respectively used as at least one first stop part; a first arc-shaped groove is formed on one side surface of the connecting seat and is used for accommodating the limiting first sector block; the first arc-shaped groove is coaxial with the first shaft hole and is positioned at the outer periphery of the first shaft hole, and two ends of the first arc-shaped groove are respectively provided with at least one first stopping part.

When in implementation, the side surface of the second clamping wheel is also provided with at least one second stop part, and one side surface of the connecting seat is provided with at least one second stop part which correspondingly presses against the at least one second stop part for limiting the rotation angle of the second rotating piece.

When in implementation, one side surface of the second clamping wheel is provided with a second sector block far away from the one side surface, and two end surfaces of the second sector block are respectively used as at least one second stop part; a second arc-shaped groove is formed on one side surface of the connecting seat and is used for accommodating the limiting second sector block; the second arc-shaped groove is coaxial with the second shaft hole and is positioned at the outer periphery of the second shaft hole, and two ends of the second arc-shaped groove are respectively provided with at least one second stopping part.

When in implementation, a limiting groove is arranged between the first shaft hole and the second shaft hole and used for accommodating the limiting switching piece, and a pivot penetrates through the connecting seat and the switching piece and is used for pivoting the switching piece to the connecting seat.

When in implementation, the utility model also comprises two groups of friction positioning components, and the first rotating shaft and the second rotating shaft respectively penetrate through the two groups of friction positioning components and are respectively fixed by a screw cap in a threaded manner; any group of friction positioning components comprises a concave-convex ring and a plurality of spring pieces, and the concave-convex ring and the spring pieces are used for being screwed by a nut to compress the spring pieces and force the concave-convex ring to be contacted with the other side surface of the connecting seat so as to generate rotation friction torsion.

When the switching piece is used, the first abutting part and the second abutting part are respectively semicircular protruding blocks far away from one end of the switching piece, the first clamping part is a semicircular groove on one side surface of the first clamping wheel, and the second clamping part is a semicircular groove on one side surface of the second clamping wheel.

When the switching piece is used, the first abutting part and the second abutting part are semicircular protruding blocks far away from one end of the switching piece, the first clamping part is a V-shaped groove on one side surface of the first clamping wheel, and the second clamping part is a V-shaped groove on one side surface of the second clamping wheel.

When in implementation, the utility model also comprises a first supporting plate, a first friction plate, a second friction plate and a second supporting plate, wherein one side surface of the first supporting plate is respectively abutted against the other side surface of the first clamping wheel and the other side surface of the second clamping wheel, the first supporting plate and the second supporting plate are arranged in parallel at intervals, and the two ends of the first supporting plate and the two ends of the second supporting plate are respectively pivoted with the first rotating shaft and the second rotating shaft; the first friction plate and the second friction plate are clamped between the first support plate and the second support plate; the first rotating shaft penetrates through the first friction plate to be linked with the first friction plate, and the second rotating shaft penetrates through the second friction plate to be linked with the second friction plate.

For a better understanding of the present utility model, the following detailed description will be provided:

drawings

FIG. 1 is a schematic perspective view of a first embodiment of the present utility model;

FIG. 2 is an exploded view of the components of a first embodiment of the present utility model;

FIG. 3 is a schematic front view of a first embodiment of the present utility model;

FIG. 4 is a schematic front view of the first and second shafts of the present utility model turned 180 degrees relative to each other;

FIG. 5 is a schematic perspective view of the first and second shafts of the present utility model turned 180 degrees;

FIG. 6 is a schematic front view of the first and second shafts of the present utility model rotated 360 degrees relative to each other;

FIG. 7 is a schematic perspective view of the first and second shafts of the present utility model rotated 360 degrees relative to each other;

FIG. 8 is a schematic view of the pivot of the present utility model with the torsion adjustment;

FIG. 9 is a schematic view showing the operation state of the hinge inserted to drive the switch to reset according to the present utility model;

fig. 10 is a schematic perspective view of a second embodiment of the present utility model.

Reference numerals illustrate:

1 double-shaft alternate switching turnover structure

2 first rotating member

21 first connecting portion

22 first rotary shaft

23 first support

3 second rotating member

31 second connecting portion

32 second rotating shaft

33 second support

4 first clamping wheel

41 first segment

42,42': first stop

43 first engaging portion

44 first support plate

45 second support plate

46 first friction plate

47 second friction plate

5 second clamping wheel

51 second segment

52,52': second stop

53 a second engaging portion

6 connecting seat

61 first shaft hole

62 second shaft hole

63 first arc-shaped groove

64 second arc-shaped groove

65 spacing groove

66,66': first stop

67,67': second stop

68 pivot shaft

69 groove bottom surface

7,7' Friction positioning assembly

71,71': concave-convex ring

72,72' elastic collar

73,73': spring plate

74,74': screw cap

8 switching piece

81 a first pressing part

82, a second pressing part.

Detailed Description

The double-shaft alternate switching turnover structure mainly comprises a first rotating piece, a second rotating piece, a connecting seat and a switching piece. The first rotating piece comprises a first rotating shaft which is connected with a first clamping wheel in a synchronous rotating mode, and a side surface of the first clamping wheel is provided with a first clamping part; the second rotating piece comprises a second rotating shaft which is connected with a second clamping wheel in a synchronous rotating mode, and one side surface of the second clamping wheel is provided with a second clamping part; one end of the connecting seat is provided with a first shaft hole for pivoting the first rotating shaft, and the other end of the connecting seat is provided with a second shaft hole for pivoting the second rotating shaft; the switching piece is pivoted with the connecting seat in a relatively swinging mode, the switching piece is positioned between the first shaft hole and the second shaft hole, one end of the switching piece is provided with a first propping part and a second propping part, so that when the first rotating piece overturns from 0 degree to 180 degrees relative to the second rotating piece, the first propping part limits the first clamping part, and meanwhile, the second propping part butts against one side surface of the second clamping wheel; when the first rotating piece is turned from 180 degrees to 360 degrees relative to the second rotating piece, the first pressing part presses one side surface of the first clamping wheel, and meanwhile, the second pressing part limits the second clamping part.

Referring to fig. 1 to 3, a first embodiment of a dual-axis alternating switching turnover structure 1 according to the present utility model mainly includes a first rotating member 2, a second rotating member 3, a first engaging wheel 4, a second engaging wheel 5, a connecting seat 6, two sets of friction positioning components 7,7' and a switching member 8. The first rotating member 2 includes a first connecting portion 21 and a first rotating shaft 22, the first connecting portion 21 is combined with one end of the first rotating shaft 22, and the first connecting portion 21 is in locking connection with a first bracket 23. The second rotating member 3 includes a second connecting portion 31 and a second rotating shaft 32, the second connecting portion 31 is combined with one end of the second rotating shaft 32, and the second connecting portion 31 is in locking connection with a second bracket 33. The second bracket 33 and the first bracket 23 are respectively connected with a screen and a base of a foldable electronic device, or respectively connected with a screen and another screen.

The first engaging wheel 4 has a non-circular shaft hole penetrating axially, so as to be sleeved and correspondingly engaged on the non-circular shaft rod at the other end of the first rotating shaft 22, so that the first rotating shaft 22 is connected with the first engaging wheel 4 in a synchronous rotating manner. A first sector 41 axially away from the side surface is arranged on the side surface of the first clamping wheel 4, and two end surfaces of the first sector 41 are respectively used as first stop parts 42 and 42'; the first engaging wheel 4 has a semicircular groove on the side periphery thereof as the first engaging portion 43.

The second engaging wheel 5 has a non-circular shaft hole penetrating axially, so as to be sleeved and correspondingly engaged on the non-circular shaft rod at the other end of the second rotating shaft 32, so that the second rotating shaft 32 is connected with the second engaging wheel 5 in a synchronous rotating manner. A second sector 51 axially far from the side surface is arranged on the side surface of the second clamping wheel 5, and two end surfaces of the second sector 51 are respectively used as second stop parts 52 and 52'; the second engaging wheel 5 has a semicircular groove on the side periphery thereof as the second engaging portion 53.

The other side surface of the first clamping wheel 4 and the other side surface of the second clamping wheel 5 respectively press against one side surface of a first supporting plate 44, the first supporting plate 44 and a second supporting plate 45 are arranged in parallel at intervals, and two ends of the first supporting plate 44 and two ends of the second supporting plate 45 are respectively pivoted with the first rotating shaft 22 and the second rotating shaft 32; a first friction plate 46 and a second friction plate 47 are arranged between the first support plate 44 and the second support plate 45, and the first rotating shaft 22 passes through the first friction plate 46 to rotate synchronously with the first friction plate 46; the second rotating shaft 32 passes through the second friction plate 47 to couple the second friction plate 47.

The two ends of the connecting seat 6 are parallel to penetrate a first shaft hole 61 and a second shaft hole 62, the first rotating shaft 22 penetrates through the first shaft hole 61 to pivotally connect one end of the connecting seat 6, and the second rotating shaft 32 penetrates through the second shaft hole 62 to pivotally connect the other end of the connecting seat 6. The connecting seat 6 has a first arc-shaped slot 63, a second arc-shaped slot 64 and a limiting slot 65 on one side, wherein the first arc-shaped slot 63 is coaxial with the first shaft hole 61 and is located at the outer periphery of the first shaft hole 61, two ends of the first arc-shaped slot 63 are respectively provided with a first stop portion 66 and 66', and the first sector block 41 is accommodated and limited in the first arc-shaped slot 63. The second arcuate slot 64 is concentric with the second axial hole 62 and is located at the outer periphery of the second axial hole 62, and the second arcuate slot 64 has second stop portions 67,67' at both ends thereof, respectively, and the second segment 51 is accommodated and retained in the second arcuate slot 64. Therefore, when the first rotating shaft 22 and the second rotating shaft 32 rotate relatively, the two first stopping portions 42,42 'of the first engaging wheel 4 respectively abut against the two first stopping portions 66,66', so as to limit the rotation angle of the first rotating member 2; when the two second stopping portions 52,52 'of the second engaging wheel 5 respectively abut against the two second stopping portions 67,67', the rotation angle of the second rotating member 3 can be limited. In addition, two ends of the limiting groove 65 are respectively communicated with the first shaft hole 61 and the second shaft hole 62, and are positioned between the first shaft hole 61 and the second shaft hole 62, and a pivot 68 passes through the limiting groove 65 and is fixed on the connecting seat 6.

The other side of the connecting seat 6 is provided with two sets of friction positioning components 7,7', any one set of friction positioning components 7,7' mainly comprises a concave-convex ring 71,71', an elastic collar 72,72' and a plurality of spring pieces 73,73 'which are axially arranged in sequence, the first rotating shaft 22 and the second rotating shaft 32 respectively penetrate through the two sets of friction positioning components 7,7' and are respectively screwed and fixed by nuts 74,74', so as to respectively compress the plurality of spring pieces 73,73' and the elastic collar 72,72', and force the two concave-convex rings 71,71' to respectively press the other side of the connecting seat 6, so that rotational friction torque is respectively generated, and the first bracket 23 and the second bracket 33 can be freely stopped or positioned at a preset angle position when relatively rotating. In addition, by increasing or decreasing the number of the spring plates 73,73' and locking the nuts 74,74' with the other ends of the first shaft 22 and the second shaft 32, respectively, the pressing forces of the two concave-convex rings 71,71' can be adjusted, respectively, so as to achieve another torsion effect.

The switching piece 8 is a triangular plate, and a circular through hole is formed in the plate surface of the switching piece 8 for the pivot 68 to pass through, so that the switching piece 8 is pivoted with the connecting seat 6 in a relatively swinging manner, and the switching piece 8 is accommodated in the limit groove 65 of the connecting seat 6 and is positioned between the first shaft hole 61 and the second shaft hole 62; the switching member 8 has a first pressing portion 81 and a second pressing portion 82 on one end surface thereof at an upper and lower interval, and the first pressing portion 81 and the first pressing portion 82 are respectively semicircular protruding blocks far away from the one end surface.

As shown in fig. 1 to 3, when the screen and the base (or the screen and the other screen connected by the shafts) connected by the first shaft 22 and the second shaft 32 are in a covering state, that is, the first bracket 23 and the second bracket 33 are in a covering state, the first pressing portion 81 of the switching member 8 presses the first engaging portion 43 of the first engaging wheel 4, and the second pressing portion 82 presses one side surface of the second engaging wheel 5; the first stopping portion 42 of the first engaging wheel 4 correspondingly presses against the first stopping portion 66 of the connecting seat 6 to prevent the first rotating shaft 22 of the first rotating member 2 from rotating in a clockwise direction; the second stop portion 52 of the second engaging wheel 5 simultaneously presses against the second stop portion 67, so as to prevent the second rotating shaft 32 of the second rotating member 3 from rotating in the counterclockwise direction, and further prevent the first bracket 23 and the second bracket 33 from rotating in the same direction.

As shown in fig. 1, 4 and 5, when the second rotating shaft 32 rotates from 0 degrees to 180 degrees clockwise relative to the first rotating shaft 22, the switching member 8 is maintained at the original position as shown in fig. 4 and does not swing, and at this time, the first pressing portion 81 of the switching member 8 still presses to lock the first engaging portion 43 of the first engaging wheel 4. When the second rotating shaft 32 rotates to 180 degrees, the second stopping portion 52 'of the second engaging wheel 5 presses against the second stopping portion 67' of the connecting seat 6, so that the second rotating shaft 32 can not rotate further in the clockwise direction, but only rotate the first rotating shaft 22 in the counterclockwise direction.

As shown in fig. 1, 6 and 7, when the first rotating shaft 22 rotates relative to the second rotating shaft 32, that is, the first rotating shaft 22 rotates from 180 degrees to 360 degrees in the counterclockwise direction, the first pressing portion 81 of the switching member 8 releases the locking effect on the first locking portion 43 of the first locking wheel 4 by the rotation of the first locking wheel 4, so that the first pressing portion 81 can continuously press against one side surface of the first locking wheel 4, and the second pressing portion 82 is forced to press against the second locking portion 53 of the second locking wheel 5, so as to lock and lock the second rotating shaft 32. In addition, when the first shaft 22 rotates to 360 degrees, the first stop portion 42 'at the periphery of the first engaging wheel 4 abuts against the first stop portion 66' of the connecting seat 6, so that the first shaft 22 will not rotate in the counterclockwise direction any more, and the effect of rotating alternately is achieved. Thus, after the dual shafts are turned 360 degrees, the first support 23 and the second support 33 connected to the shafts can be adjusted to be parallel to each other, or the screen and the base connected to the shafts (or one screen and the other screen connected to the shafts) can be adjusted to be in a completely overlapped state.

As shown in fig. 8 and 9, when the torsion forces of the first rotating member 2 and the second rotating member 3 are individually adjusted, the pivot 68 is first removed, and the switching member 8 is pushed into the limiting groove 65 to abut against the bottom surface 69 of the groove, and at this time, the first engaging portion 43 and the second engaging portion 53 are not stopped by the first abutting portion 81 and the second abutting portion 82, and torsion force adjustment can be performed. After the torsion is adjusted, the pivot 68 is directly inserted, wherein the front end of the pivot 68 is in a tapered structure, and the switching element 8 can be driven to reset during insertion, so that the first pressing portion 81 or the second pressing portion 82 is aligned to the first engaging portion 43 or the second engaging portion 53 respectively, and assembly of the parts is completed. Therefore, the operation is simple and convenient, and torsion adjustment is performed after all elements are removed, so that the adjustment time is saved.

Please refer to fig. 10, which shows a second embodiment of a dual-axis alternating-switching flip structure 1 according to the present utility model, which is different from the first embodiment in that: the first engaging portion 43 is a V-shaped groove on one side of the first engaging wheel 4, and the second engaging portion 53 is a V-shaped groove on one side of the second engaging wheel 5. Therefore, compared with the semicircular groove, the contact between the V-shaped groove and the semicircular convex block can enable the switching stress to be smaller, the switching sense is not obvious, and the size measurement is simpler.

Therefore, the traditional double-shaft 360-degree alternate overturning structure is improved, the rotation center of the switching piece is pivoted on the connecting line of the two shafts of the connecting seat, and the function of alternately switching the two rotating shafts can be achieved through positioning the grooves on the first clamping wheel and the second clamping wheel, and meanwhile, the distance between the two rotating shafts is reduced, so that the overall thickness is reduced to be beneficial to design; the whole volume is lighter and thinner, and the whole volume is not limited by the external space, so as to adapt to the requirements of different model sizes. By changing the pressing direction of the first pressing part and the second pressing part of the switching piece and the shapes of the first clamping part and the second clamping part which are matched, the overall stability can be improved to prevent abnormal sound and improve the switching frustration caused by lateral force. And through the axial activity characteristic of the switching piece, two groups of friction positioning assemblies can be designed and assembled, so that the torsion of the two rotating shafts can be independently adjusted, and the torsion deviation is effectively reduced.

While the utility model has been described with respect to the preferred embodiments, it is not intended to limit the utility model to the particular forms disclosed, but on the contrary, it is intended to cover various modifications and variations within the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a biax alternately switches flip structure which characterized in that includes:

the first rotating piece comprises a first rotating shaft which is connected with a first clamping wheel in a synchronous rotating mode, and a side surface of the first clamping wheel is provided with a first clamping part;

the second rotating piece comprises a second rotating shaft which is connected with a second clamping wheel in a synchronous rotating mode, and a side surface of the second clamping wheel is provided with a second clamping part;

one end of the connecting seat is provided with a first shaft hole for pivoting the first rotating shaft, the other end of the connecting seat is provided with a second shaft hole for pivoting the second rotating shaft, and a limit groove is arranged between the first shaft hole and the second shaft hole; and

the switching piece is accommodated in the limiting groove, a pivot penetrates through the connecting seat and the switching piece, the switching piece is pivoted with the connecting seat in a relatively swinging mode, one end of the switching piece is provided with a first abutting part and a second abutting part, and when the first abutting part abuts against one side face of the first clamping wheel, the second abutting part abuts against the second clamping part of the second clamping wheel; when the first propping part is propped against the first clamping part of the first clamping wheel, the second propping part is propped against one side surface of the second clamping wheel.

2. The dual-axis alternating switching structure as claimed in claim 1, wherein the first rotating member further comprises a first connecting portion, one end of the first rotating shaft is combined with the first connecting portion, and the first connecting portion is connected with a first bracket; the second rotating piece further comprises a second connecting part, one end of the second rotating shaft is combined with the second connecting part, and the second connecting part is connected with a second bracket.

3. The structure of claim 1, wherein the first engaging wheel further comprises at least one first stop portion on a side surface thereof having a first engaging portion, and the connecting seat further comprises at least one first stop portion on a side surface thereof, the at least one first stop portion being pressed against the at least one first stop portion for limiting a rotation angle of the first rotating member.

4. The dual-axis alternate switching turnover structure of claim 3, wherein a side surface of the first engaging wheel having a first engaging portion is provided with a first sector far away from the side surface, and two end surfaces of the first sector are respectively used as the at least one first stop portion; a first arc-shaped groove is arranged on one side surface of the connecting seat, which is provided with at least one first stopping part, and is used for accommodating and limiting the first sector block; the first arc-shaped groove is coaxial with the first shaft hole and is positioned at the outer periphery of the first shaft hole, and the two ends of the first arc-shaped groove are respectively provided with at least one first stopping part.

5. The structure of claim 1, wherein the second engaging wheel further comprises at least one second stop portion on a side surface of the connecting seat, and the at least one second stop portion is pressed against the at least one second stop portion to limit the rotation angle of the second rotating member.

6. The structure of claim 5, wherein a side surface of the second engaging wheel having a second engaging portion has a second sector far from the side surface, and two end surfaces of the second sector are respectively used as the at least one second stop portion; a second arc-shaped groove is arranged on one side surface of the connecting seat, which is provided with at least one second stopping part, and is used for accommodating and limiting the second sector block; the second arc-shaped groove is coaxial with the second shaft hole and is positioned at the outer periphery of the second shaft hole, and the two ends of the second arc-shaped groove are respectively provided with at least one second stopping part.

7. The dual-axis alternating switching structure as claimed in any one of claims 1 to 6, further comprising two sets of friction positioning components, wherein the first rotating shaft and the second rotating shaft respectively pass through the two sets of friction positioning components and are respectively screwed and fixed by a nut; any group of friction positioning components comprises a concave-convex ring and a plurality of spring pieces, wherein the screw cap is screwed to compress the spring pieces and force the concave-convex ring to contact with the other side surface of the connecting seat so as to generate rotation friction torsion.

8. The dual-axis alternating switching structure of claim 1, wherein the first pressing portion and the second pressing portion are respectively semicircular protrusions far away from one end of the switching member, the first engaging portion is a semicircular groove on one side surface of the first engaging wheel, and the second engaging portion is a semicircular groove on one side surface of the second engaging wheel.

9. The dual-axis alternating switching structure of claim 1, wherein the first pressing portion and the second pressing portion are respectively semicircular protrusions far away from one end of the switching member, the first engaging portion is a V-shaped groove on one side of the first engaging wheel, and the second engaging portion is a V-shaped groove on one side of the second engaging wheel.

10. The dual-axis alternate switching turnover structure of claim 1, further comprising a first supporting plate, a first friction plate, a second friction plate and a second supporting plate, wherein one side surface of the first supporting plate is respectively abutted against the other side surface of the first clamping wheel and the other side surface of the second clamping wheel, the first supporting plate and the second supporting plate are arranged in parallel at intervals, and two ends of the first supporting plate and two ends of the second supporting plate are respectively pivoted with the first rotating shaft and the second rotating shaft; the first friction plate and the second friction plate are clamped between the first support plate and the second support plate; the first rotating shaft penetrates through the first friction plate to be linked with the first friction plate, and the second rotating shaft penetrates through the second friction plate to be linked with the second friction plate.