CN210371618U

CN210371618U - Double-shaft hinge structure

Info

Publication number: CN210371618U
Application number: CN201921286275.0U
Authority: CN
Inventors: 张凯岚
Original assignee: Jarllytec Co Ltd
Current assignee: Jarllytec Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-04-21
Anticipated expiration: 2029-08-09

Abstract

A double-shaft hinge structure comprises a connecting component, wherein a frame body and at least one frame body of the connecting component are respectively and continuously penetrated through an upper shaft hole and a lower shaft hole; the first rotating shaft and the second rotating shaft respectively penetrate through the upper shaft hole and the lower shaft hole of the connecting component, the first rotating shaft is provided with a first stopping part, and the surface of the second rotating shaft is provided with a spiral groove; the sliding piece of the axial moving piece is provided with a limiting groove, the swinging piece of the axial moving piece is pivoted in the guide hole of the frame body, the first convex part at one end of the swinging piece is guided into the spiral groove of the second rotating shaft, and the second convex part at the other end of the swinging piece is guided into the limiting groove of the sliding piece, so that the swinging piece can swing in the frame body to drive the sliding piece to move back and forth when the first rotating shaft and the second rotating shaft rotate relatively.

Description

Double-shaft hinge structure

Technical Field

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

Background

General folding electronic devices, for example: a notebook computer, a tablet computer or a mobile phone, etc., which is mainly connected with a first plate body and a second plate body of an electronic device respectively through a single-shaft hinge or a double-shaft hinge. The first plate body can be an upper cover for installing the display screen, the second plate body can be a base for installing components, batteries and a keyboard, and the first plate body can be covered relative to the second plate body or can be turned to 360 degrees from 0 degree.

As shown in the patent of the alternatively rotatable biaxial hinge issued as CN203962677U, a biaxial hinge structure is disclosed, which mainly includes a connecting member, two mandrels, an axial moving member and a radial moving member. The connecting piece comprises a frame body and a frame body, wherein the frame body and the frame body are respectively provided with an upper shaft hole and a lower shaft hole, the spindles parallel to each other are respectively penetrated through the frame body, one end part of the axial moving piece is led into at least one spiral groove arranged on the surface of one spindle so as to synchronously move and axially slide in and out of the through hole arranged between the upper shaft hole and the lower shaft hole of the frame body. Each mandrel is provided with at least one stopping part, the stopping part of the mandrel and the other end part of the axial moving part are mutually stopped, and the stopping part of the other mandrel and the stopping part arranged on the side surface of the frame body are mutually stopped. Each spindle has a cam part with one concave part at its periphery and multiple concave parts at its periphery. The radial movable piece can slide between the clamping cam parts in the radial direction and is clamped and locked in one of the concave parts alternately so as to form at least two times of alternate clamping actions by respectively and alternately matching with the stopping actions, and each mandrel can rotate alternately.

The double-shaft hinge structure is characterized in that the frame body is connected between the double mandrels, the frame body limits the moving piece capable of axially reciprocating and sliding, and then the spiral groove on the mandrels is used for forming a guiding function, so that the axial moving piece can synchronously move at different positions and alternatively stop at the stop part of one mandrel during forward rotation and reverse rotation respectively, and the stop part of the other mandrel is matched with the mutual stop function of the frame body, thereby forming the effect of alternative stop, enabling the double mandrels or the mandrels and the frame body to alternately rotate, and enabling one mandrel to form a secondary rotation effect during the forward rotation and the reverse rotation. In the concrete implementation, the axial moving piece and the frame body through hole which correspond to each other are Y-shaped, one end part of the axial moving piece is a fork-shaped end part and is provided with an arc recess corresponding to the peripheral surface of the mandrel, the other end part of the axial moving piece is a bolt post, and the bolt post is guided into a spiral groove on the mandrel, so that the sliding action of the axial moving piece cannot influence the relative rotation action of the mandrel and the frame body.

However, the stud of the Y-shaped axial moving part of the above-mentioned alternately rotatable biaxial hinge (CN203962677U) is introduced into the spiral groove on the spindle, and during the actual rotation of the spindle, the stud will bear considerable shearing force, and according to the structural strength of the present axial moving part, it is not easy to pass the requirement of life test; furthermore, in order to make the dual spindles or the spindles and the frame rotate alternately and make one spindle rotate twice during the forward rotation and the reverse rotation, CN203962677U needs to provide two stopping portions, and the stopping portion of the other spindle cooperates with the mutual stopping action of the frame to form the alternate stopping function, which increases the manufacturing process and the cost of the components.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a structure different from the prior art and improves the disadvantages of the above structure.

An object of the utility model is to provide a biaxial hinge structure, can improve above-mentioned can alternate rotatory biaxial hinge a case "axial moving part" structural strength not enough, be difficult to the problem that requires through the life-span test, and can effectively prolong the result of the life of axial moving part in order to improve the life-span test. The problem that two stopping parts are required to be arranged in the CN203962677U case to generate the alternating stopping effect can be solved, and the arrangement of a second reverse stopping part in the previous case can be omitted by changing the structure of the axial moving part in the previous case and the path of the spindle spiral groove, so that the manufacture and the processing are convenient, the working procedures and components are reduced, and the production cost is reduced.

In order to achieve the above object, the present invention provides an improved dual-axis hinge structure, which comprises a connecting member, a first rotating shaft, a second rotating shaft and an axial moving member. The connecting assembly comprises a frame body and at least one frame body, the frame body and the at least one frame body are respectively and continuously penetrated through an upper shaft hole and a lower shaft hole, a guide hole communicated with the lower shaft hole is arranged between the upper shaft hole and the lower shaft hole of the frame body, and a stop piece is arranged on one side surface of the frame body; the first rotating shaft penetrates through an upper shaft hole of the connecting assembly and is provided with a first stopping part; the second rotating shaft penetrates through the lower shaft hole of the connecting component, and a spiral groove is formed in the surface of the second rotating shaft; the axial moving part comprises a sliding part and a swinging part, the sliding part is provided with a limiting groove, the swinging part is pivoted in the guide hole of the frame body, one end of the swinging part is provided with a first convex part for leading into the spiral groove of the second rotating shaft, and the other end of the swinging part is provided with a second convex part for leading into the limiting groove of the sliding part, so that the sliding part is driven to move back and forth when the swinging part swings relative to the frame body.

When in use, the utility model also comprises a first clamping wheel, a second clamping wheel and a radial moving part, the first clamping wheel is sleeved with the first rotating shaft, and the periphery of the first clamping wheel is provided with a first concave part; the second clamping wheel is sleeved with the second rotating shaft, and the periphery of the second clamping wheel is provided with at least two second concave parts; the radial moving piece is limited between the first clamping wheel and the second clamping wheel in a radial sliding mode.

When the radial moving part is implemented, two frame bodies of the connecting component are arranged, a first limiting groove is arranged between the upper shaft hole and the lower shaft hole of one frame body, a second limiting groove is arranged between the upper shaft hole and the lower shaft hole of the other frame body, a first shaft and a second shaft are respectively arranged on two sides of the radial moving part, the first shaft penetrates into the first limiting groove, and the second shaft penetrates into the second limiting groove, so that the radial moving part can slide in the radial direction.

When the sliding piece is implemented, the guide hole axially penetrates through the frame body, so that the sliding piece can axially slide and enter and exit the guide hole of the frame body; the first stopping part and the stopping part are respectively positioned at two opposite sides of the frame body, so that when the sliding part axially slides out of the guide hole of the frame body, the first stopping part stops one side end of the sliding part, or the second stopping part stops the other side end of the sliding part.

When the swinging piece is implemented, two opposite sides of the swinging piece are provided with planes, the middle part of the swinging piece is in a wide and flat shape, two ends of the swinging piece are narrow, the swinging piece is pivoted in a guide hole of the frame body through a transverse bolt shaft, the guide hole is a Y-shaped hole with a forked top end, a gap is formed between the forked top end and an upper shaft hole of the frame body, and the sliding piece is a forked block body with an upward opening and is limited in the forked top end of the guide hole of the frame body in a sliding mode.

In practice, the spiral groove on the surface of the second rotating shaft is completely accommodated in the lower shaft hole of the frame body.

When the first rotating shaft is implemented, one end of the first rotating shaft is connected with a first plate body, the other end of the first rotating shaft is connected with a first torsion unit, and the first torsion unit comprises a first pushing cam, a plurality of first elastic sheets and a first pressing piece which are sequentially sleeved on the first rotating shaft.

When the second torsion unit is implemented, one end of the second rotating shaft is connected with a second plate body, the other end of the second rotating shaft is connected with a second torsion unit, and the second torsion unit comprises a second pushing cam, a plurality of second elastic sheets and a second pressing piece which are sequentially sleeved on the second rotating shaft.

When the device is used, the swinging piece is provided with a wide and flat middle part and gradually narrows towards the first convex part, so that a first tapered part is formed at the adjacent position of the swinging piece and the first convex part.

When the swinging piece is implemented, the swinging piece is provided with a wide and flat middle part and gradually narrows towards the second convex part, so that a second conical part is formed at the adjacent part of the swinging piece and the second convex part.

To facilitate a deeper understanding of the present invention, it is described in detail later.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of the components of the preferred embodiment of the present invention.

Fig. 3 is a front view of the preferred embodiment of the present invention.

Fig. 4 is a side view of the preferred embodiment of the present invention.

Fig. 5 is a sectional view taken along line a-a' of fig. 4.

Fig. 6 is a schematic view of the first rotating shaft and the second rotating shaft of the present invention in a use state when they are turned over to 90 degrees.

Fig. 7 is a schematic view of the first rotating shaft and the second rotating shaft of the present invention in a use state when they are turned over to 180 degrees.

Fig. 8 is a sectional view of B-B' of fig. 7.

Fig. 9 is a schematic view of the first rotating shaft and the second rotating shaft of the present invention in a use state when they are turned over to 270 degrees.

Fig. 10 is a schematic view of the first rotating shaft and the second rotating shaft of the preferred embodiment of the present invention being turned to 360 degrees.

Fig. 11 is a cross-sectional view of C-C' of fig. 10.

Description of the reference numerals

Double-shaft hinge structure 1 connecting component 2

Frame 21 and

frame bodies

22,23

The first limiting groove 221 and the second limiting groove 231

Upper shaft hole 24 and lower shaft hole 25

Guide hole 26 stop 3

Second stop 31 first shaft 4

First block portion 42 of first plate 41

First torque unit 43 first push cam 44

First spring 45 and first pressing piece 46

Second plate 51 of second rotating shaft 5

Second torsion unit 52 second push cam 53

Second spring plate 54 and second pressing piece 55

First end 57 of spiral groove 56

Second end 58 axially moveable member 6

Sliding piece 61 limiting groove 611

Swing member 62 latch 621

First projection 63 and first taper 631

Second taper part 641 of second convex part 64

First concave part 71 of first engaging wheel 7

Second

concave parts

81,82 of second engaging wheel 8

Radial moving part 9 first shaft 91

A second shaft 92.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1, a first shaft 4 and a second shaft 5 of the dual-shaft hinge structure 1 of the present invention are respectively coupled and positioned in an upper shaft hole 24 and a lower shaft hole 25 of a connecting assembly 2, one end of the first shaft 4 is connected to a first plate 41, the first plate 41 is installed on a base having components, batteries and a keyboard, and the other end of the first shaft 4 is connected to a first torsion unit 43 to achieve a predetermined torsion value, so that the first plate 41 can be freely stopped or positioned at a predetermined angle when rotating; one end of the second shaft 5 is connected to a second plate 51, the second plate 51 is configured to be mounted on the upper cover of the display screen, and the other end of the second shaft 5 is coupled to a second torsion unit 52, so as to achieve a predetermined torsion value, and the second plate 51 can be freely stopped or positioned at a predetermined angle during rotation. The swinging member 62 is pivotally connected to the guiding hole 26 of the frame 21, and two ends of the swinging member 62 are respectively connected to the sliding member 61 and the second rotating shaft 5, so that when the second rotating shaft 5 rotates 360 degrees relative to the first rotating shaft 1, the swinging member 62 swings inside the frame 21 and drives the sliding member 61 to move back and forth between the inside and the outside of the frame 21.

Please refer to fig. 2 and fig. 3, which are preferred embodiments of the dual-axis hinge structure 1 of the present invention, including a connecting component 2, a stop component 3, a first rotating shaft 4, a second rotating shaft 5, an axial moving component 6, a first engaging wheel 7, a second engaging wheel 8 and a radial moving component 9. The connecting assembly 2 includes a frame 21 and two frame bodies (22,23), the frame 21 and the two frame bodies (22,23) are respectively and continuously penetrated through an upper shaft hole 24 and a lower shaft hole 25, a guiding hole 26 is disposed between the upper shaft hole 24 and the lower shaft hole 25 of the frame 21, the guiding hole 26 is a Y-shaped hole with a forked top end and axially penetrates through the frame 21, a gap is formed between the forked top end of the guiding hole 26 and the upper shaft hole 24 of the frame 21, and the bottom end of the guiding hole 26 is communicated with the lower shaft hole 25. A rectangular first limiting groove 221 is arranged between the upper shaft hole 24 and the lower shaft hole 25 of one frame body 22 of the two frame bodies (22,23), and a rectangular second limiting groove 231 is arranged between the upper shaft hole 24 and the lower shaft hole 25 of the other frame body 23. The upper shaft hole 24 penetrates through the stopper 3 and the first engaging wheel 7, the stopper 3 is located on one side surface of the frame 21, and the outer periphery of the stopper 3 has a radially protruding sector as a second stopper 31. The lower axial hole 25 extends through both a washer, also located on the side of the frame 21 and aligned with the stop 3, and the second engaging wheel 8.

One end of the first rotating shaft 4 is connected to the first plate 41, the first rotating shaft 4 has a first stopping portion 42, after the first rotating shaft 4 passes through the connecting assembly 2, the stopping member 3 and the upper shaft hole 24 of the first engaging wheel 7, the first stopping portion 42 and the stopping member 3 are respectively located at two opposite sides of the frame 21, the other end of the first rotating shaft 4 is connected to the first torsion unit 43, and the first torsion unit 43 includes a first pushing cam 44, a plurality of first elastic sheets 45 and a first pressing member 46 sequentially sleeved on the first rotating shaft 4. One end of the second shaft 5 is connected to the second plate 51, after the second shaft 5 passes through the connecting assembly 2, the washer and the lower shaft hole 25 of the second engaging wheel 8, the other end of the second shaft 5 is connected to the second torsion unit 52, and the second torsion unit 52 includes a second pushing cam 53, a plurality of second elastic sheets 54 and a second pressing member 55 sequentially sleeved on the second shaft 5. The surface of the second shaft 5 is provided with a spiral groove 56, the spiral groove 56 has a first end 57 and a second end 58, and the spiral groove 56 between the first end 57 and the second end 58 is completely received in the lower shaft hole 25 of the frame 21.

The axial moving part 6 is a Y-shaped combined block with a forked top end, and comprises a sliding part 61 and a swinging part 62, the sliding part 61 is a forked block body with an upward opening, the top end of the forked block body is provided with an arc recess corresponding to the circumferential surface of the first rotating shaft 4 for sliding and limiting in the forked top end of the Y-shaped guide hole 26 of the frame body 21, and the upper shaft hole 24 of the frame body 21 is separated through the forked top end of the guide hole 26, so that the relative rotation action of the first rotating shaft 4 and the frame body 21 cannot be influenced by the sliding action of the sliding part 61; the sliding member 61 has a rectangular slot at its center, and the rectangular slot is used as a limiting slot 611. The swinging member 62 is pivotally connected to the guiding hole 26 of the frame 21 by a transverse bolt 621, a first protrusion 63 is disposed at the bottom end of the swinging member 62 for guiding into the spiral groove 56 of the second rotating shaft 5, a second protrusion 64 is disposed at the top end of the swinging member 62 for guiding into the limiting groove 611 of the sliding member 61, so that when the second rotating shaft 5 rotates to swing the swinging member 62 in the guiding hole 26 of the frame 21, the sliding member 61 is driven to move back and forth inside and outside the guiding hole 26, and the sliding member 61 slides axially out of one side of the guiding hole 26 of the frame 21 to form a stopping function with the first stopping portion 42 of the first rotating shaft 4, or the sliding member 61 slides out of the other side of the guiding hole 26 of the frame 21 to form a stopping function with the second stopping portion 31 of the stopping member 3. Since the middle part of the swinging piece 62 is wide and flat, the two ends are narrow, and the two opposite sides are provided with planes, the swinging piece 62 is formed into a thin and small plate body, in order to increase the structural strength and prolong the service life of the first convex part 63, the lower half contour of the plate body is gradually narrowed from the wide and flat middle part of the swinging piece 62 to the first convex part 63, and a first taper part 631 is formed at the adjacent position of the plate body and the first convex part 63; in addition, for the convenience of assembly, and increasing the structural strength to prolong the service life of the second protrusion 64, the upper and lower halves of the swing member 62 are symmetrical, so that the contour of the upper half of the plate body is gradually narrowed from the wide and flat middle portion of the swing member 62 to the second protrusion 64, and a second tapered portion 641 is formed at the adjacent position of the plate body and the second protrusion 64.

The periphery of the first engaging wheel 7 is provided with a first concave portion 71, the periphery of the second engaging wheel 8 is provided with two second concave portions (81,82) opposite to each other, two sides of the radial moving member 9 are respectively provided with a first shaft 91 and a second shaft 92, the first shaft 91 penetrates into the first limiting groove 221 of one frame 22, and the second shaft 92 penetrates into the second limiting groove 231 of the other frame 23, so that the radial moving member 9 is limited between the first engaging wheel 7 and the second engaging wheel 8 in a radially slidable manner.

Therefore, when the first plate body 41 and the second plate body 51 are in a covering state, as shown in fig. 4, the first protrusion 63 at the bottom end of the swinging member 62 is limited at the first end 57 of the spiral groove 56 of the second rotating shaft 5, and one side end of the sliding member 61 is exposed to one outer side of the frame body 21, as shown in fig. 1, and does not form a stop with the first stopping portion 42 of the first rotating shaft 4; in the initial stage of the forward rotation of the first plate 41 relative to the second plate 51, that is, referring to fig. 5 to 7, when the first rotating shaft 4 rotates from 0 degree to 90 degrees, it means that during the process of the rotation of the first rotating shaft 4 relative to the second rotating shaft 5 from 0 degree to 90 degrees, the radial moving element 9 will be firstly engaged and locked in the second concave portion 81 above the second engaging wheel 8 as shown in fig. 5 to lock the second rotating shaft 5, and during this process, the second rotating shaft 5 is restricted by the stopping and locking effects and cannot rotate, only the first rotating shaft 4 can rotate, until the first rotating shaft 4 rotates to about 90 degrees, the first stopping portion 42 of the first rotating shaft 4 stops one side end of the sliding element 61, and the first rotating shaft 4 stops rotating. At this time, as shown in fig. 6, the second rotating shaft 5 is not rotated yet, the first concave portion 71 of the first engaging wheel 7 is opened to correspond to the second concave portion 81 above the second engaging wheel 8, and the restriction of the circumferential surface of the first engaging wheel 7 on the radially movable element 9 is released.

In the middle period of the forward rotation, that is, in the process of rotating the second rotating shaft 5 from 0 degree to 180 degrees as shown in fig. 6-9, it means that in the middle period of the process, when the second rotating shaft 5 rotates from 90 degrees to 270 degrees relative to the first rotating shaft 4, since the first engaging wheel 7 described in the upper section rotates to a position around 90 degrees (as shown in fig. 8) and is limited by the stopping action, the first rotating shaft 4 cannot rotate any more, and the radial moving member 9 is loosened to release the locking action on the second engaging wheel 8, and then the second rotating shaft 5 rotates relative to the first rotating shaft 4, in the rotating process, as shown in fig. 7 and 8, the second rotating shaft 5 in the rotating state pushes the first protrusion 63 through the spiral groove 56, and further the swinging member 62 pulls the sliding member 61 to retract into the forked top end of the Y-shaped guide hole 26 to release the stopping action on the first stopper 42, and synchronously forcing the radial movable piece 9 to slide upwards and radially out of the second concave part 81 above the second clamping wheel 8 to release the locking effect on the second rotating shaft 5, then clamping and locking the radial movable piece 9 in the first concave part 71 below the first clamping wheel 7 to lock the first rotating shaft 4 until the second rotating shaft 5 rotates to a position of about 180 degrees, wherein the first convex part 63 reaches the position of the second end 58 of the spiral groove 56 of the second rotating shaft 5, the sliding piece 61 axially slides out of the guide hole 26 of the frame body 21 to be exposed out of the other outer side of the frame body 21, the second concave part 82 below the second clamping wheel 8 rotates by 180 degrees to correspond to the opening of the first concave part 71 of the first clamping wheel 7, at the moment, the limiting effect of the circumferential surface of the second clamping wheel 8 on the radial movable piece 9 is released, and the first rotating shaft 4 is still at a position of about 90 degrees.

Then, at the end of the forward rotation, that is, referring to fig. 9, 10, and 11, the first rotating shaft 4 continuously rotates from 90 degrees to 180 degrees, which means that during the rotation of the first rotating shaft 4 from 270 degrees to 360 degrees relative to the second rotating shaft 5, at the beginning of this period, the second engaging wheel 8 described in the upper section is limited by the stop function so as to prevent the second rotating shaft 5 from rotating further, at this time, the radial moving member 9 loosens and releases the locking function on the first engaging wheel 7, so that the first rotating shaft 4 can rotate 90 degrees relative to the second rotating shaft 5 again, and simultaneously the radial moving member 9 is forced to slide radially downward out of the first concave portion 71 of the first engaging wheel 7 so as to release the locking function on the first rotating shaft 4, and continuously the radial moving member 9 is locked and locked in the second concave portion 82 below the second engaging wheel 8 so as to lock the second rotating shaft 5. At this time, as shown in fig. 10, the other side end of the sliding member 61 is exposed to the other outer side of the frame 21, and the second stopper portion 31 of the stopper 3 rotating synchronously with the first rotating shaft 4 stops the continuous rotation of the first rotating shaft 4 by the blockage of the other side end of the sliding member 61, thereby achieving the effect of alternate rotation. Therefore, after the double rotating shafts turn over by 360 degrees, the plate bodies connected with the rotating shafts can be adjusted to be parallel to each other, or the screen and the base (or one screen and the other screen connected with the rotating shafts) connected with the rotating shafts are adjusted to be in a completely overlapped state.

Therefore, the utility model has the advantages of it is following:

1. the utility model discloses separately be a sliding part and a swing piece with the axial moving part, the swing piece uses a horizontal bolt axle pin joint in the guiding hole of framework, and the first convex part of swing piece bottom and the second convex part on top lead-in respectively the spiral ditch of second pivot and the spacing inslot of sliding part, and make the both ends convex part of swing piece respectively and the flat cone position that forms a body between the thin intermediate part, when using to let the swing piece when the guiding hole of framework swings, can drive the inside and outside axial displacement that makes a round trip of sliding part at the guiding hole, and the cone position of swing piece is difficult for disturbing the action of sliding part and second pivot, therefore, can effectively improve the structural strength of axial moving part, in order to prolong the life of axial moving part, and then improve the result of life test.

2. The utility model discloses a spiral groove of second pivot holds in the lower shaft hole of framework completely, and when the leading-in spiral groove of lower convex part of swing piece and let the swing piece when the framework in swing, can drive the both sides end of sliding piece and expose respectively in the both sides of framework to give the backstop through first backstop portion and second backstop portion respectively, consequently, can omit the setting of the first case "second reversal backstop portion", conveniently make and process, reduction process and spare part are with reduction in production cost.

Although the present invention has been described with reference to specific preferred embodiments for achieving the above objects, it should not be construed as limiting the structural features of the present invention, and any person skilled in the art should understand that any changes or modifications easily conceived can be possible within the technical spirit of the present invention, and all such changes and modifications are covered by the scope of the present invention.

Claims

1. A dual-axis hinge structure, comprising:

a connecting assembly, including a frame and at least one frame, the frame and the at least one frame are respectively and continuously penetrated through by an upper shaft hole and a lower shaft hole, a guiding hole communicated with the lower shaft hole is arranged between the upper shaft hole and the lower shaft hole of the frame, and a stop piece is arranged on one side surface of the frame;

the first rotating shaft penetrates through the upper shaft hole of the connecting component, the first rotating shaft is provided with a first stopping part, the second rotating shaft penetrates through the lower shaft hole of the connecting component, and the surface of the second rotating shaft is provided with a spiral groove; and

an axial moving part, including a sliding part and a swing part, the sliding part is equipped with a spacing groove, the swing part pin joint is in the guiding hole of the framework, one end of the swing part is equipped with a first convex part for leading into the spiral groove of the second rotating shaft, the other end of the swing part is equipped with a second convex part for leading into the spacing groove of the sliding part, when the swing part swings relative to the framework, the effect of driving the sliding part to move back and forth is achieved.

2. The dual-axis hinge structure as claimed in claim 1, further comprising a first engaging wheel, a second engaging wheel and a radial moving member, wherein the first engaging wheel is coupled to the first shaft, and a first concave portion is formed on a periphery of the first engaging wheel; the second clamping wheel is sleeved with the second rotating shaft, and the periphery of the second clamping wheel is provided with at least two second concave parts; the radial moving piece is limited between the first clamping wheel and the second clamping wheel in a radial sliding mode.

3. The dual-axis hinge structure as claimed in claim 2, wherein the connecting member has two frame bodies, a first limiting groove is disposed between the upper shaft hole and the lower shaft hole of one frame body, a second limiting groove is disposed between the upper shaft hole and the lower shaft hole of the other frame body, a first shaft and a second shaft are disposed on two sides of the radial moving member, respectively, and the first shaft penetrates the first limiting groove and the second shaft penetrates the second limiting groove for allowing the radial moving member to slide radially.

4. The dual-axis hinge structure as claimed in claim 1, wherein the guiding hole axially penetrates through the frame body, so that the sliding member can axially slide in and out of the guiding hole of the frame body, and the stopping member has a second stopping portion, the first stopping portion and the stopping member are respectively located at two opposite sides of the frame body, so that when the sliding member axially slides out of the guiding hole of the frame body, the first stopping portion stops one side end of the sliding member, or the second stopping portion stops the other side end of the sliding member.

5. A twin-shaft hinge structure as defined in claim 1, wherein the swinging member has flat surfaces on opposite sides thereof, a middle portion thereof being wide and flat and two ends thereof being narrow, and is pivotally connected by a transverse pin to a guide hole of the frame body, the guide hole being a Y-shaped hole having a forked top end spaced from the upper shaft hole of the frame body, and the sliding member being a forked block body having an upward opening for slidably retaining the fork-shaped top end of the guide hole of the frame body.

6. The dual-axis hinge structure as claimed in claim 1, wherein the spiral groove of the second shaft surface is completely received in the lower shaft hole of the frame.

7. The dual-axis hinge structure as claimed in claim 1, wherein one end of the first shaft is connected to a first plate, and the other end of the first shaft is connected to a first torsion unit, the first torsion unit includes a first pushing cam, a plurality of first resilient sheets and a first pressing member sequentially sleeved on the first shaft.

8. The dual-axis hinge structure as claimed in claim 1, wherein one end of the second shaft is connected to a second plate, the other end of the second shaft is connected to a second torsion unit, the second torsion unit includes a second pushing cam, a plurality of second resilient tabs and a second pressing member, which are sequentially sleeved on the second shaft.

9. The dual-axis hinge structure as claimed in claim 1, wherein the swinging member has a flat middle portion and gradually narrows toward the first protrusion for forming a first tapered portion at the abutting portion of the swinging member and the first protrusion.

10. The twin-shaft hinge structure as defined in claim 1, wherein the swinging member is provided with a flat and wide intermediate portion and gradually narrows toward the second convex portion for forming a second tapered portion at a position where the swinging member abuts the second convex portion.