CN112983970B

CN112983970B - Double-shaft hinge capable of alternatively rotating

Info

Publication number: CN112983970B
Application number: CN201911291515.0A
Authority: CN
Inventors: 张凯岚
Original assignee: Jarllytec Co Ltd
Current assignee: Jarllytec Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2022-05-03
Anticipated expiration: 2039-12-16
Also published as: CN112983970A

Abstract

A dual-axis hinge capable of rotating alternately comprises a pivot base, a first spindle and a second spindle. At least one side of the pivoting seat is pivoted with an axial swinging piece and a radial moving piece at intervals; the first mandrel extends to form a first shaft rod penetrating through the pin joint seat and is provided with a first guide groove and a first clamping groove, a first starting end, a first terminal end, a right blocking end and a left blocking end which are used for abutting against the axial swinging piece and forming a blocking function are respectively formed in the first guide groove, and the first clamping groove is used for locking the first mandrel and unlocking the second mandrel when being jointed with the radial moving piece; the second mandrel extends to form a second shaft rod penetrating through the pin joint seat, and is provided with a second guide groove and at least one second clamping groove, a second starting end and a second terminal end which are used for abutting the upper guide tenon and forming a stop function are respectively formed in the second guide groove, and the at least one second clamping groove is used for locking the second mandrel when being jointed with the radial moving piece and unlocking the first mandrel so that the mandrels can rotate alternatively.

Description

Double-shaft hinge capable of alternatively rotating

Technical Field

The present invention relates to a dual-axis hinge, and more particularly, to a dual-axis hinge capable of rotating alternately.

Background

Generally, a flip-top electronic device, such as a notebook computer or a mobile phone, has a hinge device, which enables a screen to open or close relative to a main body. Most of the existing hinge devices are of a single-axis type, and generally include a pivot seat fixed on the screen of the electronic device, the pivot seat is provided with an axis hole for a spindle to pass through, and the spindle is fixed on a body of the electronic device through a fixing seat; the pivot seat rotates relative to the mandrel, so that a screen of the electronic device is opened or closed relative to the body.

In order to provide convenience for operating the screen or the main body, those skilled in the art have developed a dual-axis hinge device, which is respectively sleeved on two spindles through two mutually meshed gears, and the two spindles are respectively fixed to the screen and the main body of the electronic device, so that the screen and the main body can be turned over by more than 180 degrees in opposite directions through the two gears when opened and closed without interfering with each other, thereby facilitating touch operation or convenient holding.

However, due to various factors such as manufacturing tolerances of the gears and tolerances between the gears and the gear shafts, there is a gap between the gears of the aforementioned dual shaft type hinge, thereby causing a backlash phenomenon (backlash). When external impact or vibration is applied to the flip-type electronic device, the screen may move in the rotation direction or form a reciprocal movement (wobbling) due to the kickback phenomenon. Therefore, when the user uses the clamshell-type electronic device and watches the moving screen, the eyes of the user are easy to be tired.

To solve the above problems, those skilled in the art have developed a dual-axis hinge capable of rotating alternately, such as taiwan patent publication No. M491324 (corresponding to chinese patent No. 201420431101. X), in which the hinge includes a connecting member having a frame, a first spindle, a second spindle, an axial moving member, and a radial moving member. The axial moving part is a bolt column at one end of the Y shape and is inserted in a spiral groove on the second mandrel so as to be convenient for axial sliding and entering and exiting the frame body, so that the bolt column can bear a large shearing force in the actual rotating process of the second mandrel, and the bolt column is easy to break and damage, thereby failing to pass the requirement of life test. In addition, in order to make the first spindle and the second spindle rotate alternately in the frame body, so that any one of the spindles can have a secondary rotation effect during the forward rotation and the reverse rotation, the first spindle and the second spindle of the present disclosure must be respectively provided with a first stopping portion and a second stopping portion, and the second stopping portion of the second spindle and a frame stopping portion of the frame body and a fan-shaped stopping ring sleeved on the first spindle and the axial moving member must be matched to perform a mutual stopping function, so as to form an alternate stopping effect.

Disclosure of Invention

The present invention provides a dual-axis hinge capable of rotating alternately, which is desired to improve the problems of insufficient structural strength of the axial moving part of the prior art and difficulty in passing the life test requirements, and to provide a guide groove on each of the two spindles to replace two sets of stopping portions of the two spindles shown in the prior art, and to omit the fan-shaped stopping ring shown in the prior art to generate the same alternate stopping effect, thereby achieving the advantages of convenient manufacturing, reduced manufacturing processes and components, and reduced production cost.

In order to achieve the above-mentioned objectives, the present invention provides a dual-axis hinge capable of rotating alternately, which comprises a pivot seat, at least one axial swing member, and a radial moving member, wherein the pivot seat is axially provided with a lower through hole and an upper through hole, and at least one side of the pivot seat is pivotally connected with the axial swing member at intervals, the radial swing member is provided with a lower guide tenon and an upper guide tenon in a radial protruding manner, and the radial moving member radially forms a lower arc surface and an upper arc surface; a first mandrel, one end of which axially extends a first shaft lever penetrating the lower through hole, and the outer periphery of the first mandrel is provided with a first guide groove and a first clamping groove respectively corresponding to the lower guide tenon and the lower cambered surface; a first initial end, a first terminal end, a right blocking end and a left blocking end are respectively formed in the first guide groove, the first initial end and the first terminal end are abutted by the lower guide tenon and have a blocking function, the right blocking end and the left blocking end are oppositely arranged between the first initial end and the first terminal end, and the first clamping groove and the lower cambered surface are combined to form locking of the first mandrel; a second spindle, one end of which axially extends a second shaft rod penetrating the upper through hole, and the outer periphery of the second spindle is provided with a second guide groove and at least one second clamping groove corresponding to the upper guide tenon and the upper cambered surface respectively; a second starting end and a second terminal end which are used for the upper guide tenon to abut and form a stopping function are respectively formed in the second guide groove, and when the at least one second clamping groove is jointed with the upper cambered surface, the second mandrel is locked, the first mandrel is unlocked, and the first mandrel and the second mandrel can rotate alternately.

To achieve the above objective, another technical means of the present invention is to provide a dual-axis hinge capable of rotating alternately, which includes a pivot seat, having a lower through hole and an upper through hole in an axial direction, and at least one side of the pivot seat pivotally connected to an axial swinging member having a lower guide tenon and an upper guide tenon protruded in a radial direction at intervals, and a radial moving member radially forming a lower arc surface and an upper arc surface; a first mandrel, one end of which axially extends a first shaft lever penetrating the lower through hole, the first shaft lever is sleeved with a first connecting ring, the first connecting ring is provided with a first guide groove corresponding to the lower tenon, and the outer periphery of the first mandrel is provided with a first clamping groove corresponding to the lower cambered surface; a first initial end, a first terminal end, a right blocking end and a left blocking end are respectively formed in the first guide groove, the first initial end and the first terminal end are abutted by the lower guide tenon and form a blocking effect, and the first mandrel is locked when the first clamping groove is jointed with the lower cambered surface; a second mandrel, one end of which axially extends a second shaft rod penetrating the upper through hole, the second shaft rod is sleeved with a second linkage ring, the second linkage ring is provided with a second guide groove corresponding to the upper tenon, and the outer periphery of the second mandrel is provided with at least one second clamping groove corresponding to the upper cambered surface; a second starting end and a second terminal end which are used for the upper guide tenon to abut and form a stopping function are respectively formed in the second guide groove, and when the at least one second clamping groove is jointed with the upper cambered surface, the second mandrel is locked, the first mandrel is unlocked, and the first mandrel and the second mandrel can rotate alternately.

In one embodiment, the other end of the first mandrel is provided with a first connecting part, and the first connecting part is provided with a plurality of first fixing holes so as to be connected with a first bracket; the other end of the second mandrel is provided with a second connecting part, and the second connecting part is provided with a plurality of second fixing holes so as to be connected with a second bracket.

In one embodiment, the first engaging groove is disposed on a side surface of the first mandrel; the number of the second clamping grooves is two, and the second clamping grooves are respectively arranged on the top surface and the bottom surface of the second mandrel so as to form a locking shape of clamping with the upper cambered surface.

In one embodiment, the torque assembly further includes a plurality of torque clips forming a stacked configuration, and a C-shaped lower clamp for the first shaft to pass through and the C-shaped upper clamp for the second shaft to pass through and the C-shaped upper clamp are respectively disposed at the lower end and the upper end of each torque clip.

In one embodiment, the torsion assembly further includes at least one fixing plate, the fixing plate is adjacent to the torsion clamping pieces, and a lower plate hole for the first shaft rod to pass through and an upper plate hole for the second shaft rod to pass through are respectively formed at the lower end and the upper end of each fixing plate.

In one embodiment, the number of the fixing pieces is at least two, and a friction pad for the first shaft rod and the second shaft rod to penetrate and be linked is respectively arranged between the lower piece holes and the upper piece holes of two adjacent fixing pieces.

In an embodiment, the first spindle and the second spindle are respectively connected to a torsion auxiliary adjusting unit, each torsion auxiliary adjusting unit includes an elastic element for the first shaft and the second shaft to respectively penetrate through, and a tightening element for the first shaft and the second shaft to respectively lock.

In one embodiment, the elastic element is selected from a spring, a plurality of disk-shaped elastic pieces or a plurality of wave-shaped elastic pieces.

In one embodiment, a friction pad is disposed between the elastic element and the pressing member.

In one embodiment, at least one side of the pivot base extends out of a pair of side walls oppositely, and two shaft bolts penetrate through the pair of side walls at intervals, so that a first shaft bolt in the shaft bolts is pivoted with the axial swinging piece, and a second shaft bolt is pivoted with the radial moving piece; the side surface of the radial moving piece is provided with a long hole for the second shaft bolt to penetrate through, when the upper cambered surface is jointed with the at least one second clamping groove, the second shaft bolt is contacted with a lower hole end of the long hole, and when the lower cambered surface is jointed with the first clamping groove, the second shaft bolt is contacted with an upper hole end of the long hole.

In one embodiment, the two opposite sides of the pivot base respectively extend out of a pair of side walls in opposite directions, a first shaft bolt penetrates through the pair of side walls and is pivoted with the axial swinging piece, and a second shaft bolt penetrates through the other pair of side walls and is pivoted with the radial moving piece; the side surface of the radial moving piece is provided with a long hole for the second shaft bolt to penetrate through, when the upper cambered surface is jointed with the at least one second clamping groove, the second shaft bolt is contacted with a lower hole end of the long hole, and when the lower cambered surface is jointed with the first clamping groove, the second shaft bolt is contacted with an upper hole end of the long hole.

Drawings

To further disclose the detailed technical content of the present invention, please refer to the attached drawings, wherein:

fig. 1 and fig. 2 are exploded perspective views of a first embodiment of a biaxial hinge of the present invention;

FIG. 3 is a perspective view of the assembled dual-axis hinge of the first embodiment of the present invention, showing the first and second spindles at 0 degrees;

FIG. 4a is a front view of the biaxial hinge shown in FIG. 3 with the side walls removed to show the starting configuration of the axial pendulum;

FIG. 4b is a cross-sectional view of FIG. 3 taken along line A-A;

FIG. 5 is a perspective view of the first mandrel rotated 90 degrees relative to the second mandrel of the present invention;

FIG. 6a shows the axial oscillating member of the biaxial hinge shown in FIG. 5 in a displaced configuration in the first guide groove of the first spindle;

FIG. 6B is a cross-sectional view of FIG. 5 taken along line B-B;

FIG. 7 is a perspective view of the second spindle of the present invention rotated 270 degrees relative to the first spindle;

FIG. 8a shows the axial oscillating member of the biaxial hinge shown in FIG. 7 in a displaced configuration in the first guide groove of the first spindle and in the second guide groove of the second spindle, respectively;

FIG. 8b is a cross-sectional view of FIG. 7 taken along line C-C;

FIG. 9 is a perspective view of the first mandrel rotated 360 degrees relative to the second mandrel in accordance with the present invention;

FIG. 10a shows the axial oscillating member of the two-axis hinge of FIG. 9 in a displaced configuration in the first guide groove of the first spindle and in the second guide groove of the second spindle, respectively;

FIG. 10b is a cross-sectional view of FIG. 9 taken along line D-D;

FIG. 11 is an exploded perspective view of a second embodiment of the dual-axis hinge of the present invention;

fig. 12 is a perspective view of the assembly of the two-axis hinge according to the second embodiment of the present invention.

Detailed Description

Referring to fig. 1 to 4b, the present invention discloses an alternatively rotatable dual-axis hinge, which includes a pivot base 1, a first spindle 2, a second spindle 3, a torsion assembly 4, and two sets of torsion auxiliary adjusting units 5.

The pivot base 1 is axially provided with a lower through hole 11 and an upper through hole 12, and at least one side, for example, the right side, oppositely extends a pair of side walls 13, and two shaft bolts 16 are alternately arranged through the pair of side walls 13 so as to be alternately pivoted with an axial swinging member 14 and a radial moving member 15 respectively. Wherein, a lower guide tenon 141 and an upper guide tenon 142 are respectively and radially arranged on the lower part and the upper part of the shaft bolts 16 pivoted with the axial swinging piece 14 by a first shaft bolt 16, and a lower cambered surface 151 and an upper cambered surface 152 are radially formed on the lower part and the upper part of the radial moving piece 15 pivoted with a second shaft bolt 16. The side surface of the radial moving member 15 is perforated with an elongated hole 153 through which the second shaft pin 16 passes, so as to form a stopping function when the second shaft pin 16 contacts a lower hole end or an upper hole end of the elongated hole 153, respectively, thereby stably limiting the radial displacement of the radial moving member 15 between the pair of side walls 13.

One end of the first spindle 2 extends axially to form a first shaft 21 penetrating the lower through hole 11, and the other end has a first connecting portion 22, the first connecting portion 22 is provided with a plurality of first fixing holes 221, so that common connecting members, such as rivets, can penetrate through the first fixing holes 221 and can be locked to an electronic device, such as a first bracket a of a notebook computer connected to a main body.

In addition, the outer circumference of the first mandrel 2 is provided with a first guide groove 23 and a first engaging groove 24 at positions corresponding to the lower guide tenon 141 and the lower arc surface 151, respectively. The first guide groove 23 includes two radial groove sections parallel to each other, and an axial groove section connected between the two radial groove sections, and a first start end 231, a first end 232 (shown in fig. 2), and a right blocking end 233 and a left blocking end 234 oppositely disposed between the first start end 231 and the first end 232 are respectively formed in the first guide groove 23 for the lower tenon 141 to abut against and form a blocking function. The first start end 231 is located at one end of the two radial slot ends, the first end 232 is located at the other end of the two radial slot ends, and the right stop end 233 and the left stop end 234 are disposed at the connection between the two radial slot sections and the two opposite ends of the axial slot section, so as to limit the displacement of the lower guide tongue 141 in the first guide slot 23. As shown in fig. 1, the first engaging groove 24 is disposed on a side surface of the first spindle 2 so as to lock the first spindle 2 and unlock the second spindle 3 when engaging with the lower arc surface 151 (shown in fig. 8 b).

The second mandrel 3 has a similar overall structure to the first mandrel 2, so that one end of the second mandrel 3 also extends axially to form a second shaft rod 31 penetrating the upper through hole 12, and the other end has a second connecting portion 32, the second connecting portion 32 is provided with a plurality of second fixing holes 321, so that common connecting members, such as rivets, can penetrate through the second fixing holes 321 and can be locked to the electronic device, such as a second bracket B of a notebook computer connected to a screen.

In addition, the outer circumference of the second mandrel 3 is provided with a second guiding groove 33 and at least one second engaging groove 34 corresponding to the upper guiding tenon 142 and the upper arc surface 152, respectively. The second guide slot 33 is a substantially arc-shaped spiral slot, and a second initial end 331 and a second final end 332 (shown in fig. 2) are respectively formed in the second guide slot 33 for the upper guide tongue 142 to abut and form a stop function, so as to limit the displacement of the upper guide tongue 142 in the second guide slot 33. As shown in fig. 1 and 2, the number of the second engaging grooves 34 is two, and the second engaging grooves are respectively formed on the top surface and the bottom surface of the second spindle 3 so as to selectively form a locking shape engaging with the upper arc surface 152. That is, the at least one second engaging groove 34 is engaged with the upper arc surface 152 to lock the second spindle 3 and unlock the first spindle 2.

The torque assembly 4 includes a plurality of torque clips 41 forming a stacked configuration, and a C-shaped lower clamp 411 for the first shaft 21 to pass through and clamp and a C-shaped upper clamp 412 for the second shaft 31 to pass through and clamp are respectively disposed at the lower end and the upper end of each torque clip 41. Therefore, the number of the torque clamping pieces 41 of the torque assembly 4 can adjust the torque of the first spindle 2 and the second spindle 3 to a predetermined value.

In addition, the torsion assembly 4 further includes at least one fixing plate 42, the at least one fixing plate 42 is adjacent to the torsion clamping pieces 41, and a lower plate hole 421 for the first shaft rod 21 to pass through and an upper plate hole 422 for the second shaft rod 31 to pass through are respectively formed at the lower end and the upper end of each fixing plate 42.

Referring to fig. 1 and 2, the number of the fixing plates 42 is at least two, and a friction pad 6 for the first shaft rod 21 and the second shaft rod 31 to pass through and be linked is respectively disposed between the lower plate holes 421 and the upper plate holes 422 of two adjacent fixing plates 42. In addition, the friction pad 6 for the first shaft rod 21 and the second shaft rod 31 to pass through and link is also disposed between the fixing plate 42 and each set of auxiliary torsion adjusting units 5. At least one side surface of each friction pad 6 is provided with a plurality of oil storage holes 61 which are arranged in an annular shape and are used for containing lubricating grease, so as to provide a lubricating effect with adjacent members, such as the fixing plate 42, and the

spindles

2 and 3 generate friction torque with the adjacent members through the respective two friction pads 6, so that the torque values of the

spindles

2 and 3 are slightly adjusted through the auxiliary torque adjusting units 5 on the basis of the torque values preset by the torque clamping pieces 41, and are within a preset range.

The first spindle 2 and the second spindle 3 are respectively connected with a torsion auxiliary adjusting unit 5, each torsion auxiliary adjusting unit includes an elastic element 51 for the first spindle 21 and the second spindle 31 to respectively penetrate through, and a pressing member 52, such as an anti-dropping nut, for the first spindle 21 and the second spindle 31 to respectively lock, thereby facilitating to slightly adjust the torsion value of the

spindles

2, 3. As shown in fig. 1 and fig. 2, the elastic element 51 is a plurality of disc-shaped elastic pieces, but not limited thereto, and in other embodiments, the elastic element 51 may be a spring or a plurality of wave-shaped elastic pieces. Therefore, the first mandrel 2 and the second mandrel 3 are respectively influenced by the elastic force of each elastic element 51 during the alternate rotation to form the axial torque variation and generate the stagnation and positioning effect.

In addition, the friction pad 6 is disposed between the elastic element 51 and the pressing element 52 to prevent the pressing element 52 and the elastic element 51 from being worn due to direct friction, so that the torque is stably formed within a predetermined range. In another embodiment, however, the auxiliary torque adjusting unit 5 is an optional component, which can be selectively used according to the actual torque requirement.

As shown in fig. 3, a perspective view of the pivot base 1, the first spindle 2, the second spindle 3, the torsion assembly 4 and the two sets of torsion auxiliary adjusting units 5 is shown. If the first bracket a is attached to an electronic device, such as a main body of a notebook computer, and the second bracket B is attached to a screen of the electronic device, such as a notebook computer. The first bracket a and the second bracket B are disposed in parallel to form a first angle, such as a 0 degree configuration. Referring to fig. 4a and 4b, at this time, the upper tenon 142 of the axial swinging member 14 abuts against the second terminal end 332 in the second guiding groove 33, and the lower tenon 141 of the axial swinging member 14 abuts against the first starting end 231 in the first guiding groove 23 (shown in fig. 4 a); and the lower arc surface 151 of the radial moving member 15 abuts against the outer peripheral surface of the first mandrel 2, and the upper arc surface 152 is locked in a second locking groove 34 (shown in fig. 4b, at this time, the second shaft pin 16 touches the lower hole end of the elongated hole 153) to lock the second mandrel 3 and unlock the first mandrel 2. That is, the second spindle 3 is locked by the radial movable element 15 so as to be locked against rotation, so that only the first spindle 2 can be rotated subsequently.

As shown in fig. 5 to 6B, the first mandrel 2 is rotated clockwise to a second angle, for example, 90 degrees, so that an included angle of 90 degrees is formed between the first bracket a and the second bracket B. At this time, the upper tenon 142 of the axial swinging member 14 still abuts against the second terminal 332 in the second guiding groove 33, and the lower tenon 141 of the axial swinging member 14 already abuts against the right stop 233 (shown in fig. 6a) along a radial slot section in the first guiding groove 23, so as to form a stop configuration, such that the first spindle 2 cannot rotate any more; at this time, the lower arc surface 151 of the radial moving member 15 and the first engaging groove 24 of the first spindle 2 are opposite to each other at intervals to form a gap therebetween (shown in fig. 6b), and the upper arc surface 152 is located in the second engaging groove 34 to form a first unlocking exchange, so as to facilitate the subsequent downward radial movement of the radial moving member 15 caused by the rotation of the second spindle 3. That is, by the first state exchange of the

mandrels

2 and 3, the first mandrel 2 is locked by the axial swinging member 14 and cannot rotate, so that the first mandrel 2 forms a locked state, and the second mandrel 3 is released by the radial moving member 15 to form an unlocked state (since the outer peripheral surface of the first mandrel 2 is not adjacent to the lower arc surface 151, a gap is formed between the lower arc surface 151 and the first engaging groove 24 for the radial moving member 15 to move, so that the lower arc surface 151 is engaged with the first engaging groove 24, and the second shaft pin 16 contacts the upper hole end of the elongated hole 153), so that only the second mandrel 3 can be rotated subsequently. The effect of play during the first unlocking exchange is thereby eliminated by the stop and limit action of the axial oscillating element 14 and the first guide groove 23.

As shown in fig. 7 to 8B, the second mandrel 3 is rotated counterclockwise to a third angle, for example, 180 degrees, so that the first bracket a and the second bracket B have been rotated by 270 degrees relative to each other. In the process, the upper tenon 142 is forced to move in the second guiding groove 33 to swing the axial swinging member 14 until the upper tenon 142 of the axial swinging member 14 abuts against the second starting end 331 in the second guiding groove 33 to form a stop configuration, so that the second spindle 3 cannot rotate any more, and the lower tenon 141 of the axial swinging member 14 swings inward in the axial groove section of the first guiding groove 23 to abut against the left stop end 234 (shown in fig. 8 a); at this time, the lower arc surface 151 of the radial moving member 15 is fastened in the first engaging groove 24 of the first mandrel 2, so that the second shaft pin 16 contacts the upper hole end of the elongated hole 153, and the upper arc surface 152 is opposite to the other second engaging groove 34 at an interval to form a gap therebetween (shown in fig. 8b), so as to form a second unlocking exchange, so as to facilitate the subsequent upward radial movement of the radial moving member 15 caused by the rotation of the first mandrel 2. That is, by the second state exchange of the

mandrels

2 and 3, the second mandrel 3 is locked by the axial swinging member 14 and cannot rotate, so that the second mandrel 3 is locked, and the first mandrel 2 is released by the radial moving member 15 to form an unlocked state (because the outer peripheral surface of the second mandrel 3 is not adjacent to the upper arc surface 152, a gap is formed between the upper arc surface 152 and the other second engaging groove 34 for the radial moving member 15 to move, so that the upper arc surface 152 is engaged with the other second engaging groove 34, and the second shaft bolt 16 touches the lower hole end of the elongated hole 153), so that only the first mandrel 2 can be rotated later. The axial oscillating element 14 and the stop and limit in the second guide groove 33 are used to eliminate the play effect during the second unlocking exchange.

As shown in fig. 9 to 10B, the first mandrel 2 is rotated clockwise to a fourth angle, for example, 90 degrees, so that the first support a and the second support B have been rotated by 360 degrees. At this time, the upper tenon 142 of the axial swinging member 14 still abuts against the second starting end 331 in the second guiding groove 33, and the lower tenon 141 of the axial swinging member 14 already abuts against the first terminal end 232 (shown in fig. 10a) along another radial groove section in the first guiding groove 23, so as to form a stop configuration, so that the first mandrel 2 cannot rotate any more; at this time, the lower arc surface 151 of the radial movable member 15 abuts against the outer peripheral surface of the first spindle 2, and the upper arc surface 152 is locked in the other second locking groove 34 (shown in fig. 10b, and the second spindle 16 touches the lower hole end of the elongated hole 153), so as to form a locked state for the second spindle 3 and an unlocked state for the first spindle 2, that is, the second spindle 3 is locked by the radial movable member 15 and cannot rotate, so that only the first spindle 2 can be rotated reversely afterwards.

Therefore, the aforesaid operation process can be known that the first spindle 2 and the second spindle 3 are alternately rotated to adjust the included angle formed between the first bracket a and the second bracket B, so that the body of the electronic device is in a state of being covered by 0 degrees relative to the screen or in a state of being folded back to back after being lifted and rotated to 360 degrees, and the rotation angle range of one spindle is divided into two stages and is preset as a preferential rotation, so as to avoid the situation that the two spindles are arbitrarily turned over, avoid the situation that the spindles are not rotated to be positioned (eliminate the influence caused by the gap during the unlocking and exchanging of the two spindles), and reduce the situation that the telecommunication lines are twisted or entangled.

To return to the configuration shown in fig. 3 as shown in fig. 9, the user only needs to operate in the reverse direction, for example, rotate the first spindle 2 in the fourth angle to the third angle in the counterclockwise direction, so as to form the configuration shown in fig. 7 to 8 b; then, the second mandrel 2 is rotated clockwise to the second angle to form the configuration shown in fig. 5 to 6 b; finally, the first mandrel 2 is rotated in a counterclockwise direction to the first angle to form the configuration shown in fig. 3 to 4 b.

As shown in fig. 11 to 12, which show a second embodiment of the alternately rotatable biaxial hinge, the same reference numerals (symbols) are used to denote the same components as those of the first embodiment, and since the present embodiment shares many common components with the first embodiment, only the differences will be described in detail later.

The difference between the present embodiment and the first embodiment is that a pair of sidewalls 13 respectively extend from two opposite sides of the pivot base 1, wherein a first shaft pin 16 is inserted through the pair of sidewalls 13 on the left side to pivot an axial swinging member 14, and a second shaft pin 16 is inserted through the pair of sidewalls 13 on the right side to pivot a radial moving member 15. An elongated hole 153 is formed through the side surface of the radial movable member 15 for the second shaft pin 16 to pass through, so that when the second shaft pin 16 respectively contacts a lower hole end or an upper hole end of the elongated hole 153, a stopping effect is respectively formed, thereby stably limiting the radial displacement of the radial movable member 15 between the pair of side walls 13 on the right side.

In addition, a first engaging groove 24 is formed at a position corresponding to the lower arc surface 151 on the outer circumferential surface of the first mandrel 2; the outer circumference of the second spindle 3 is provided with at least one second engaging groove 34 corresponding to the upper arc surface 152.

Furthermore, the first shaft 21 is sleeved with a first link ring 25, and the outer periphery of the first link ring 25 is provided with a first guide groove 23 corresponding to the lower guide tenon 141 of the axial swinging member 14 as shown in the first embodiment. The first guide groove 23 includes two radial groove sections parallel to each other and an axial groove section connected between the two radial groove sections, and a first start end 231, a first end 232 (refer to fig. 2), and a right blocking end 233 and a left blocking end 234 oppositely disposed between the two ends 231, 232 are respectively formed in the first guide groove 23. Wherein the first start end 231 is at one end of the two radial slot ends, the first end 232 is at the other end of the two radial slot ends, and the right stop end 233 and the left stop end 234 are disposed at the connection of the two radial slot segments and the two opposite ends of the axial slot segment. In addition, since a rod section of the first shaft rod 21 and a shaft hole of the first link ring 25 are non-circular shapes corresponding to each other, the first link ring 25 can rotate synchronously with the first spindle 2. The second shaft 32 is also sleeved with a second linking ring 35, and the outer periphery of the second linking ring 35 is provided with a second guide groove 33 corresponding to the upper guide tenon 142 of the axial swinging member 14. The second guiding groove 33 is an arc-shaped spiral groove, and a second starting end 331 and a second ending end 332 (shown in fig. 2) are respectively formed in the second guiding groove 33, since a rod section of the second shaft rod 31 and a shaft hole of the second linking ring 35 are also in a non-circular shape corresponding to each other, so that the second linking ring 35 can rotate synchronously with the second mandrel 3.

The effect achieved by this embodiment is the same as that of the first embodiment, that is, the first mandrel 2 and the second mandrel 3 adjust the included angle formed between the first bracket a and the second bracket B in an alternating rotation manner, so that the body of the electronic device is in a closed state of being covered at 0 degree relative to the screen, or in a folded state of being opened and rotated to 360 degrees, and then the body and the screen are oppositely and oppositely folded. Therefore, please refer to the alternative locking and unlocking configurations shown in fig. 3 to 10b in the operation flow to achieve the same effect as the first embodiment.

Therefore, by implementing the present invention, the alternating rotation of the first spindle and the second spindle is realized by the stopping function of the lower tenon and the upper tenon of the axial swinging member formed in the corresponding first guide groove of the first spindle and the corresponding second guide groove of the second spindle, and the locking and unlocking functions of the radial moving member to the first engaging groove of the first spindle and the at least one second engaging groove of the second spindle. Therefore, the two embodiments of the present invention can improve the problem of insufficient structural strength of the axial moving part in the prior art and difficulty in passing the requirement of the life test, and replace the two sets of stopping parts and two fan-shaped stopping rings of the two mandrels in the prior art, thereby achieving the effects of facilitating the manufacture, reducing the processing procedures and the components to reduce the production cost, and being more beneficial to enabling the two mandrels to alternately rotate to the positioning, so as to eliminate the influence caused by the gap during the unlocking and exchanging of the two mandrels, which is an unprecedented good structure of the same kind of articles.

The present invention is disclosed in the preferred embodiments, and it is easily understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the present invention.

Claims

1. An alternately rotatable dual-axis hinge, comprising:

a pin joint seat, which is axially provided with a lower through hole and an upper through hole, and at least one side of which is pin jointed with an axial swinging piece which is radially provided with a lower guide tenon and an upper guide tenon in a protruding way and a radial moving piece which radially forms a lower cambered surface and an upper cambered surface;

a first mandrel, one end of which axially extends a first shaft lever penetrating the lower through hole, and the outer periphery of the first mandrel is provided with a first guide groove and a first clamping groove respectively corresponding to the lower guide tenon and the lower cambered surface; a first starting end, a first terminal end, a right blocking end and a left blocking end are respectively formed in the first guide groove, the first starting end and the first terminal end are abutted by the lower guide tenon and form a blocking function, and the right blocking end and the left blocking end are oppositely arranged between the first starting end and the first terminal end; and

a second mandrel, one end of which axially extends a second shaft rod penetrating the upper through hole, and the outer periphery of the second mandrel is provided with a second guide groove and at least one second clamping groove corresponding to the upper guide tenon and the upper cambered surface respectively; a second starting end and a second terminal end which are used for the upper guide tenon to abut and form a stopping function are respectively formed in the second guide groove; wherein at least one side of the pivot base extends out of a pair of side walls oppositely, and two shaft bolts penetrate through the pair of side walls at intervals, so that a first shaft bolt in the shaft bolts is pivoted with the axial swinging piece, and a second shaft bolt is pivoted with the radial moving piece; a long hole for the second shaft bolt to penetrate through is arranged on the side surface of the radial moving piece in a penetrating mode, when the upper arc surface is connected with the at least one second clamping groove, the second shaft bolt is made to touch a lower hole end of the long hole, and when the lower arc surface is connected with the first clamping groove, the second shaft bolt is made to touch an upper hole end of the long hole; the first clamping groove is locked on the first mandrel and unlocked on the second mandrel when being jointed with the lower cambered surface, and the at least one second clamping groove is locked on the second mandrel and unlocked on the first mandrel when being jointed with the upper cambered surface, so that the first mandrel and the second mandrel can rotate alternately.

2. An alternately rotatable dual-axis hinge, comprising:

a first mandrel, one end of which axially extends a first shaft lever penetrating the lower through hole, the first shaft lever is sleeved with a first connecting ring, the first connecting ring is provided with a first guide groove corresponding to the lower tenon, and the outer periphery of the first mandrel is provided with a first clamping groove corresponding to the lower cambered surface; a first starting end, a first terminal end, a right blocking end and a left blocking end are respectively formed in the first guide groove, the first starting end and the first terminal end are abutted by the lower guide tenon and form a blocking function, and the right blocking end and the left blocking end are oppositely arranged between the first starting end and the first terminal end; and

a second mandrel, one end of which axially extends a second shaft rod penetrating the upper through hole, the second shaft rod is sleeved with a second linkage ring, the second linkage ring is provided with a second guide groove corresponding to the upper tenon, and the outer periphery of the second mandrel is provided with at least one second clamping groove corresponding to the upper cambered surface; a second starting end and a second terminal end which are used for the upper guide tenon to abut and form a stopping function are respectively formed in the second guide groove; wherein, the two opposite sides of the pivot base respectively extend out of a pair of side walls in opposite directions, a first shaft bolt penetrates through the pair of side walls and is pivoted with the axial swinging piece, and a second shaft bolt penetrates through the other pair of side walls and is pivoted with the radial moving piece; a long hole for the second shaft bolt to penetrate through is arranged on the side surface of the radial moving piece in a penetrating mode, when the upper arc surface is connected with the at least one second clamping groove, the second shaft bolt is made to touch a lower hole end of the long hole, and when the lower arc surface is connected with the first clamping groove, the second shaft bolt is made to touch an upper hole end of the long hole; the first clamping groove is locked on the first mandrel and unlocked on the second mandrel when being jointed with the lower cambered surface, and the at least one second clamping groove is locked on the second mandrel and unlocked on the first mandrel when being jointed with the upper cambered surface, so that the first mandrel and the second mandrel can rotate alternately.

3. The alternatively rotatable dual-axis hinge of claim 1 or 2, wherein the other end of the first mandrel has a first connecting portion, the first connecting portion has a plurality of first fixing holes for connecting a first bracket; the other end of the second mandrel is provided with a second connecting part, and the second connecting part is provided with a plurality of second fixing holes so as to be connected with a second bracket.

4. The alternately rotatable biaxial hinge as claimed in claim 1 or 2, wherein the first engaging groove is provided on a side surface of the first spindle; the number of the second clamping grooves is two, and the second clamping grooves are respectively arranged on the top surface and the bottom surface of the second mandrel so as to form a locking shape of clamping with the upper cambered surface.

5. The alternatively rotatable dual-axis hinge of claim 1 or 2, further comprising a torsion assembly, wherein the torsion assembly comprises a plurality of torsion clips forming a stacked configuration, and a C-shaped lower clamp for the first shaft to pass through and clamp and a C-shaped upper clamp for the second shaft to pass through and clamp are respectively disposed at the lower end and the upper end of each torsion clip.

6. The alternatively rotatable dual-axis hinge of claim 5, wherein the torsion assembly further comprises at least one fixing plate, one fixing plate is adjacent to the torsion clips, and a lower plate hole for the first shaft to pass through and an upper plate hole for the second shaft to pass through are respectively formed at the lower end and the upper end of each fixing plate.

7. The alternatively rotatable dual-axis hinge as claimed in claim 6, wherein the number of the fixing plates is at least two, and a friction pad is disposed between the lower plate holes and the upper plate holes of two adjacent fixing plates for the first shaft rod and the second shaft rod to pass through and couple with each other.

8. The alternatively rotatable dual-axis hinge of claim 1 or 2, wherein each of the first and second spindles is connected to a torsion auxiliary adjusting unit, each torsion auxiliary adjusting unit includes an elastic member for the first and second shafts to pass through, and a pressing member for the first and second shafts to lock.

9. The alternately rotatable dual-axis hinge of claim 8, wherein the resilient element is selected from a spring, a plurality of disk springs, or a plurality of wave springs.

10. The alternatively rotatable dual-axis hinge of claim 8, wherein a friction pad is further disposed between the elastic member and the pressing member.