CN112983970B - Alternately rotatable biaxial hinge - Google Patents

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

Alternately rotatable biaxial hinge

technical field

The invention relates to a biaxial hinge, in particular to an alternately rotatable biaxial hinge.

Background technique

Generally, flip-top electronic devices, such as notebook computers or mobile phones, are provided with hinges, and the hinges can allow the screen to be opened or the cover to be closed relative to the body. Most of the existing hinge structures are single-axis, and usually include a pivot seat fixed on the screen of the electronic device, the pivot seat is provided with a shaft hole for a mandrel to pass through, and the mandrel is fixed to the screen by a fixed seat. A body of an electronic device; the pivot seat is rotated relative to the spindle, so that a screen of the electronic device can be opened or closed relative to the body.

In order to provide convenience for the operation of the screen or the body, those skilled in the art have developed a double-shaft hinge, which is respectively sleeved on two mandrels through two mutually meshing gears. The shafts are respectively fixed on the screen and the main body of the electronic device, so that when the screen and the main body are opened and closed, the two gears can be turned opposite to each other by more than 180 degrees without interfering with each other, so as to be easy to touch operation or to hold .

However, due to various factors, such as the manufacturing tolerances of the gears and the tolerances between the gears and the gear shafts, there are gaps between the gears of the aforementioned biaxial hinge, thereby causing a backlash phenomenon ( backlash phenomenon). In this way, when an external impact or vibration is applied to the flip-type electronic device, the screen may move in the rotational direction or form a wobbling movement under the action of the recoil phenomenon. Therefore, when the user uses the flip-type electronic device and watches the moving screen, the user's eyes are easily troubled by fatigue.

In order to solve the above problems, those skilled in the art have developed alternately rotatable biaxial hinges, such as Taiwan Patent Publication No. M491324 (corresponding to Chinese Patent No. 201420431101.X), in this case, its It includes a connecting piece with a frame, a first mandrel, a second mandrel, an axial moving piece, and a radial moving piece. A bolt at the Y-shaped end of the axially movable member is inserted into a helical groove on the second mandrel, so as to slide axially and enter and exit the frame, so that the second mandrel actually rotates During the process, the bolt will be subjected to considerable shear force, and it is prone to breakage and damage, so that it cannot pass the requirements of the life test. In addition, in order to enable the first mandrel and the second mandrel to rotate alternately in the frame, so that any one of the mandrels can form the effect of secondary rotation during forward rotation and reverse rotation. Therefore, this case The first mandrel and the second mandrel of the The body stop part and the mutual stop action of a sector stop ring sleeved by the first mandrel and the axially movable member, so as to form an alternate stop effect, in this way, the processing of the biaxial hinge will be increased. The cost of processes and components needs to be improved urgently.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide an alternately rotatable biaxial hinge, which hopes to improve the problems of insufficient structural strength of the axial movable parts in the prior art and difficult to pass the life test requirements, and each of the two mandrels is provided with a guide The groove is used to replace the two sets of stop parts of the two mandrels shown in the prior art, and the arrangement of the fan-shaped stop ring shown in the prior art is omitted to produce the same alternating stop effect, thereby achieving convenient manufacturing and reducing Machining procedures and components to reduce production costs.

In order to achieve the aforementioned purpose, the technical means adopted by the present invention is to provide an alternately rotatable biaxial hinge, which includes a pivot seat, a first through hole and an upper through hole in the axial direction, and at least one side is spaced apart. pivotally connect an axial swinging piece with a lower guide tenon and an upper guide tenon radially protruding, and a radial movable piece radially forming a lower arc surface and an upper arc surface; a first mandrel, one end of which is axially Extending a first shaft through the lower through hole, the outer peripheral surface of the first mandrel is respectively provided with a first guide groove and a first engaging groove corresponding to the lower guide tenon and the lower arc surface; the first A first start end and a first end end for the lower guide tenon to abut and form a stop function are respectively formed in the guide groove, and a right stop end and a left block end, and the first engaging groove forms a lock on the first mandrel when the first engaging groove is engaged with the lower arc surface; and a second mandrel, one end of which extends axially with a first shaft passing through the upper through hole. Two shaft rods, the outer peripheral surface of the second mandrel is respectively provided with a second guide groove and at least one second engaging groove at the positions corresponding to the upper guide tenon and the upper arc surface; The guide tenon abuts against and forms a second start end and a second end end with a stop function, and when the at least one second engaging groove is engaged with the upper arc surface, it forms a lock on the second mandrel and locks the second mandrel. The first mandrel is unlocked, allowing the first mandrel and the second mandrel to rotate alternately.

In order to achieve the aforementioned purpose, another technical means adopted by the present invention is to provide an alternately rotatable biaxial hinge, which includes a pivot seat, a first through hole and an upper through hole in the axial direction, and at least one side of the hinge is provided. An axial swinging piece with a lower guide tenon and an upper guide tenon radially protruding is pivotally connected at intervals, and a radial movable piece with a lower arc surface and an upper arc surface formed radially; a first mandrel, one end of which is A first shaft extending through the lower through hole in the axial direction, the first shaft is sleeved with a first linkage ring, the first linkage ring is provided with a first guide groove corresponding to the lower guide tenon, and the first linkage ring is provided with a first guide groove. The outer peripheral surface of the first mandrel is provided with a first engaging groove corresponding to the position of the lower arc surface; the first guide groove is respectively formed with a first start end and a first end for the lower guide tenon to abut and form a stop. terminal, and a right block end and a left block end oppositely arranged between the first start end and the first terminal end, and the first engaging groove is engaged with the lower arc surface to form the first center locking the shaft; and a second mandrel, one end of which axially extends a second shaft rod through the upper through hole, the second shaft rod is sleeved with a second linkage ring, the second linkage ring is opposite to A second guide groove is formed at the position where the upper guide tenon should be, and at least one second engaging groove is formed on the outer peripheral surface of the second mandrel at the position corresponding to the upper arc surface; the second guide groove is respectively formed for the upper guide tenon A second start end and a second end end that abut and form a stop, and when the at least one second engaging groove is engaged with the upper arc surface, the second mandrel is locked, and the first end is locked. A mandrel is unlocked, allowing the first mandrel and the second mandrel to rotate alternately.

In one embodiment, the other end of the first mandrel has a first connecting part, and the first connecting part defines a plurality of first fixing holes for connecting a first bracket; and the other end of the second mandrel has a second connecting part, the second connecting part defines a plurality of second fixing holes so as to connect a second bracket.

In one embodiment, the first engaging groove is arranged on the side surface of the first mandrel; and the number of the second engaging groove is two, which are respectively arranged on the top surface and the bottom surface of the second mandrel, In order to form a locking state of engagement with the upper arc surface.

In one embodiment, it further includes a torsion component, the torsion component includes a plurality of torsion clips formed in a stacked shape, and the lower end and the upper end of each torsion clip are respectively provided with the first shaft for passing through and wrapping. A C-shaped lower clamp for clamping, and a C-shaped upper clamp for passing through and wrapping the second shaft.

In one embodiment, the torsion assembly further includes at least one fixing piece, one of the fixing pieces is adjacent to the torsion clips, and the lower end and the upper end of each fixing piece are respectively provided with the first shaft rod passing through. The lower sheet hole of the second shaft, and an upper sheet hole for the second shaft to pass through.

In one embodiment, the number of the fixing sheets is at least two, and between the lower sheet holes and the upper sheet holes of two adjacent fixing sheets are respectively provided for the first shaft rod and the upper sheet holes. The second shaft rod is pierced with a friction washer which is linked.

In one embodiment, the first mandrel and the second mandrel are respectively connected with a torsion auxiliary adjustment unit, and each of the torsion auxiliary adjustment units includes a torsion auxiliary adjustment unit for the first shaft rod and the second shaft rod to respectively pass through. An elastic element, and a pressing piece for locking the first shaft rod and the second shaft rod respectively.

In one embodiment, the elastic element is selected from a spring, multiple disc-shaped elastic sheets or multiple wave-shaped elastic sheets.

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

In one embodiment, at least one side of the pivoting seat protrudes from a pair of side walls opposite to each other, and two shaft bolts pass through the pair of side walls at intervals, so that a first shaft bolt among the shaft bolts is formed. The axial swing member is pivoted, and a second shaft bolt is pivotally connected to the radial movable member; the side surface of the radial movable member is provided with an elongated hole for the second shaft bolt to pass through. When the surface is engaged with the at least one second engaging groove, the second shaft bolt touches the lower hole end of the elongated hole, and when the lower arc surface is engaged with the first engaging groove, the second shaft The pin touches an upper hole end of the elongated hole.

In one embodiment, a pair of side walls protrude from opposite sides of the pivot base, respectively, and a pair of side walls is penetrated by a first axle bolt and pivotally connected to the axial swinging member, and another The second shaft bolt passes through the other pair of side walls and is pivotally connected to the radially movable member; the side surface of the radially movable member is provided with an elongated hole for the second shaft bolt to pass through. When the at least one second engaging groove is engaged, the second shaft bolt is made to touch the lower hole end of the elongated hole, and when the lower arc surface is engaged with the first engaging groove, the second shaft bolt is made to contact an upper hole end of the elongated hole.

Description of drawings

In order to further disclose the specific technical content of the present invention, please refer to the accompanying drawings first, wherein:

1 and 2 are exploded perspective views of the first embodiment of the biaxial hinge of the present invention from two different viewing angles;

3 is a perspective view of the assembled biaxial hinge according to the first embodiment of the present invention, to show that the first mandrel and the second mandrel are in a non-operating state of 0 degrees;

Figure 4a is a front view of the biaxial hinge shown in Figure 3, with the side wall removed to show the initial shape of the axial swing member;

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

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

Fig. 6a is a moving state of the axial swing member of the biaxial hinge shown in Fig. 5 in the first guide groove of the first mandrel;

Figure 6b is a cross-sectional view taken along line B-B of Figure 5;

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

Fig. 8a is a moving state of the axial swing member of the biaxial hinge shown in Fig. 7 in the first guide groove of the first mandrel and the second guide groove of the second mandrel respectively;

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

Figure 9 is a perspective view of the first mandrel of the present invention rotated 360 degrees relative to the second mandrel;

Fig. 10a is a moving state of the axial swing member of the biaxial hinge shown in Fig. 9 in the first guide groove of the first mandrel and the second guide groove of the second mandrel respectively;

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

11 is an exploded perspective view of the second embodiment of the biaxial hinge of the present invention;

12 is a perspective view of the assembled biaxial hinge of the second embodiment of the present invention.

Detailed ways

1 to 4b, the present invention discloses an alternately rotatable biaxial hinge, which includes a pivot seat 1, a first mandrel 2, a second mandrel 3, a torsion component 4, and two sets of torque auxiliary adjustment units 5 .

The pivot seat 1 has a lower through hole 11 and an upper through hole 12 in the axial direction, and at least one side, such as the right side, protrudes a pair of side walls 13 opposite to each other, and two shaft bolts 16 are spaced through the pair of side walls. 13, so as to pivot an axial swing member 14 and a radial movable member 15 at intervals. A lower guide tenon 141 and an upper guide tenon 142 are respectively protruded radially below and above the axial swing member 14 by a first shaft bolt 16 among the shaft bolts 16 , and a second shaft bolt 16 A lower arc surface 151 and an upper arc surface 152 are radially formed below and above the pivotally connected radially movable member 15 . An elongated hole 153 for the second shaft bolt 16 to pass through is formed through the side of the radially movable member 15 , so that the second shaft bolt 16 touches a lower hole end or an upper hole end of the elongated hole 153 respectively. A stop function is formed when the radial movement member 15 is radially displaced between the pair of side walls 13 .

One end of the first mandrel 2 axially extends a first shaft 21 through the lower through hole 11 , and the other end has a first connecting portion 22 , and the first connecting portion 22 defines a plurality of first fixing holes 221 , so that common connecting elements, such as rivets, can pass through the first fixing holes 221 and be fastened to an electronic device, such as a notebook computer, to connect to a first bracket A of a main body.

In addition, a first guide groove 23 and a first engaging groove 24 are respectively provided on the outer peripheral surface of the first mandrel 2 corresponding to the lower guide tenon 141 and the lower arc surface 151 . The first guide groove 23 includes two radial groove segments that are parallel to each other, and an axial groove segment connected between the two radial groove segments. The tenon 141 abuts and forms a first start end 231, a first end end 232 (shown in FIG. 2), and a right end 231 and the first end end 232 and opposite to each other. Block end 233 and a left block end 234 . The first start end 231 is at one end of the two radial groove ends, the first terminal end 232 is at the other end of the two radial groove ends, and the right stop end 233 and the left stop end 234 are located at the two radial ends The connection between the groove segment and the opposite ends of the axial groove segment restricts the displacement of the lower guide tenon 141 in the first guide groove 23 . As shown in FIG. 1 , the first engaging groove 24 is provided on the side of the first mandrel 2 so as to lock the first mandrel 2 and the second mandrel when engaging with the lower arc surface 151 . Axle 3 is unlocked (shown in Figure 8b).

The overall structure of the second mandrel 3 is similar to that of the first mandrel 2, so one end of the second mandrel 3 also axially extends a second shaft 31 through the upper through hole 12, and the other end has a The second connecting portion 32, the second connecting portion 32 defines a plurality of second fixing holes 321, so that common connectors, such as rivets, pass through the second fixing holes 321, and are locked to the electronic device, such as a notebook computer. A second bracket B for a screen.

In addition, a second guide groove 33 and at least one second engaging groove 34 are respectively defined on the outer peripheral surface of the second mandrel 3 corresponding to the upper guide tenon 142 and the upper arc surface 152 . The second guide groove 33 is basically an arc-shaped spiral groove, and a second start end 331 and a second end end 332 ( shown in FIG. 2 ) to limit the displacement of the upper guide tenon 142 in the second guide groove 33 . As shown in FIG. 1 and FIG. 2 , the number of the second engaging grooves 34 is two, which are respectively provided on the top surface and the bottom surface of the second mandrel 3 so as to selectively form a latch with the upper arc surface 152 . Closed locked form. That is to say, when the at least one second engaging groove 34 is engaged with the upper arc surface 152 , the second mandrel 3 is locked and the first mandrel 2 is unlocked.

The torsion assembly 4 includes a plurality of torsion clips 41 in a stacked shape. The lower end and the upper end of each torsion clip 41 are respectively provided with a C-shaped lower clamp 411 for the first shaft 21 to pass through and wrap. , and a C-shaped upper clamp 412 for the second shaft 31 to pass through and clamp. Therefore, the number of the torsion clips 41 of the torsion assembly 4 can adjust the torque of the first mandrel 2 and the second mandrel 3 to a preset value.

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

Please refer to FIG. 1 and FIG. 2 again, the number of the fixing pieces 42 is at least two pieces, and between the lower piece holes 421 and the upper piece holes 422 of two adjacent fixing pieces 42 are respectively provided for the fixing piece 42 . The first shaft rod 21 and the second shaft rod 31 pass through a friction pad 6 which is linked with each other. In addition, the friction pads 6 for the first shaft rod 21 and the second shaft rod 31 to pass through and link with each other are also provided between the fixed piece 42 adjacent to each group of torsion auxiliary adjustment units 5 . Wherein, at least one side surface of each friction pad 6 is provided with a plurality of oil storage holes 61 arranged in a ring shape and for accommodating lubricating grease, so as to provide a lubricating effect with adjacent components, such as the fixed plate 42, so that the spindles 2 and 3 respectively generate frictional torsion force with the adjacent components through the respective two friction pads 6, so that on the basis of the preset torsion force value of the plurality of torsion clips 41, it is convenient for the subsequent adjustment of the torque through each of the torsion auxiliary adjustment units 5. The torque values of the mandrels 2 and 3 are adjusted to be within a predetermined range.

The first mandrel 2 and the second mandrel 3 are respectively connected with a torsion auxiliary adjustment unit 5 , and each of the torsion auxiliary adjustment units includes an elastic force for the first shaft 21 and the second shaft 31 to pass through. Element 51, and a pressing member 52 for locking the first shaft 21 and the second shaft 31 respectively, such as an anti-falling nut, so as to facilitate the slight adjustment of the torque values of the spindles 2 and 3 . As shown in FIG. 1 and FIG. 2 , the elastic element 51 is selected from a plurality of disc-shaped elastic sheets, but not limited thereto. In other embodiments, the elastic element 51 can be selected from a spring or a plurality of wave-shaped elastic sheets . Therefore, the first mandrel 2 and the second mandrel 3 are respectively affected by the elastic force of the elastic elements 51 during the alternate rotation, so as to form an axial torsion change and produce stagnation and positioning effects.

In addition, the aforementioned friction pad 6 is additionally provided between the elastic element 51 and the pressing member 52 to avoid the loss caused by the direct friction between the pressing member 52 and the elastic member 51, so that the torsion force can be stably formed in the preset value range Inside. However, in another embodiment, the torque auxiliary adjustment unit 5 is an optional component, which can be selectively used according to the actual torque requirement.

As shown in FIG. 3 , it shows a perspective view of the aforementioned pivot base 1 , the first mandrel 2 , the second mandrel 3 , the torsion component 4 and the two sets of torsion auxiliary adjustment units 5 . 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 the electronic device, such as a screen of the notebook computer. The first bracket A and the second bracket B are arranged in parallel to form a first angle, for example, a 0 degree shape. Please refer to FIGS. 4 a and 4 b , at this time, the upper guide tenon 142 of the axial rocking member 14 abuts against the second terminal 332 in the second guide groove 33 , and the lower The guide tenon 141 abuts against the first start end 231 in the first guide groove 23 (shown in FIG. 4 a ); and the lower arc surface 151 of the radially movable member 15 is adjacent to the outer peripheral surface of the first mandrel 2 , and the upper arc surface 152 is snapped into a second engaging groove 34 (shown in FIG. 4 b , at this time the second shaft bolt 16 touches the lower hole end of the elongated hole 153 ), so that the first The two mandrels 3 are locked, and the first mandrel 2 is unlocked. That is to say, the second mandrel 3 is locked by the radially movable member 15 so as to be locked and cannot be rotated, so only the first mandrel 2 can be rotated subsequently.

As shown in FIG. 5 to FIG. 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 guide tenon 142 of the axial rocking member 14 is still abutting against the second terminal 332 in the second guide groove 33 , while the lower guide tenon 141 of the axial rocking member 14 has moved along the A radial groove segment in the first guide groove 23 abuts against the right blocking end 233 (shown in FIG. 6a ) to form a stop shape, so that the first spindle 2 cannot continue to rotate; at this time, The lower arc surface 151 of the radially movable member 15 and the first engaging groove 24 of the first mandrel 2 are spaced apart from each other to form a gap (shown in FIG. 6b ), and the upper arc surface 152 It is located in the second engaging groove 34 to form the first unlocking exchange, so as to facilitate the subsequent radial movement of the radially movable member 15 by the rotation of the second mandrel 3 . That is to say, through the first state exchange of the mandrels 2 and 3, the first mandrel 2 is locked by the axial swinging member 14 to be locked and cannot be rotated, so that the first mandrel 2 is formed Locked state, and the second mandrel 3 is released by the radially movable member 15 to form an unlocked state (because the outer peripheral surface of the first mandrel 2 is not adjacent to the lower arc surface 151, so that the lower arc surface 151 and A gap is formed between the first engaging grooves 24 for the radially movable member 15 to be displaced, so that the lower arc surface 151 is engaged with the first engaging groove 24 and the second shaft bolt 16 touches the long the upper hole end of the shaped hole 153 ), so only the second spindle 3 can then be rotated. In this way, the influence of the gap during the first unlocking and exchanging is eliminated through the stop and limit functions of the axial swing member 14 and the first guide groove 23 .

As shown in FIG. 7 to FIG. 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 270 degrees relative to each other. angle. During this process, the upper guide tenon 142 is forced to move in the second guide groove 33 to swing the axial swing member 14 until the upper guide tenon 142 of the axial swing member 14 abuts against the second guide groove 33 The second start end 331 in the guide groove 33 forms a stop shape so that the second spindle 3 cannot continue to rotate, and the lower guide tenon 141 of the axial swing member 14 is in the first guide groove 23 The inner side of the axial groove section swings to the left stop end 234 (shown in FIG. 8 a ); In the first engaging groove 24 , the second shaft bolt 16 touches the upper hole end of the elongated hole 153 , and the upper arc surface 152 is spaced apart from the other second engaging groove 34 so that they are opposite to each other. A gap (shown in FIG. 8 b ) is formed between them to form the second unlocking exchange, so as to facilitate the subsequent radial movement of the radially movable member 15 by the rotation of the first mandrel 2 . That is to say, through the second state exchange of the mandrels 2 and 3 , the second mandrel 3 is locked by the axial swinging member 14 to form a lock and cannot rotate, so that the second mandrel 3 is locked. The locked state is formed, and the first mandrel 2 is released by the radially movable member 15 to form the unlocked state (because the outer peripheral surface of the second mandrel 3 is not adjacent to the upper arc surface 152, so that the upper arc surface 152 A gap is formed between the other second engaging groove 34 for the displacement of the radially movable member 15, so that the upper arc surface 152 is engaged with the other second engaging groove 34, and the second shaft The pin 16 then touches the lower hole end of the elongated hole 153), so only the first spindle 2 can then be rotated. In this way, the influence of the clearance during the second unlocking and exchanging is eliminated through the stop and limit functions of the axial swing member 14 and the second guide groove 33 .

As shown in FIG. 9 to FIG. 10b, the first mandrel 2 is rotated clockwise to a fourth angle, for example, 90 degrees, so that the first bracket A and the second bracket B have been rotated 360 degrees relative to each other. angle. At this time, the upper guide tenon 142 of the axial rocking member 14 is still abutting against the second start end 331 in the second guide groove 33 , and the lower guide tenon 141 of the axial rocking member 14 has moved along the Another radial groove segment in the first guide groove 23 abuts against the first terminal end 232 (shown in FIG. 10a ) to form a stop shape, so that the first mandrel 2 cannot continue to rotate; at this time , the lower arc surface 151 of the radially movable member 15 is adjacent to the outer peripheral surface of the first mandrel 2, and the upper arc surface 152 is snapped into the other second engaging groove 34 (shown in FIG. 10b, And the second shaft bolt 16 touches the lower hole end of the elongated hole 153), so as to form a locked state for the second mandrel 3 and an unlocked state for the first mandrel 2, that is, the The second mandrel 3 is locked by the radially movable member 15 and cannot be rotated, so the first mandrel 2 can only be rotated in the reverse direction.

Therefore, it can be known from the aforementioned operation process that the first mandrel 2 and the second mandrel 3 are rotated alternately to adjust the angle formed between the first bracket A and the second bracket B, so that the The main body of the electronic device is in a closed state of 0 degrees relative to the screen, or after it is opened and rotated to 360 degrees, the main body and the screen are in a superimposed state opposite to each other, so that the rotation angle range of one of the mandrels Divided into two stages and preset as priority rotation, to avoid the situation that the two mandrels are flipped arbitrarily, and also avoid the situation that each mandrel has not been rotated to the position (eliminate the influence caused by the gap during the unlocking and exchange of the two mandrels), It also reduces the occurrence of twisting or entanglement of telecommunication lines.

To return to the state shown in FIG. 3 , the user only needs to reverse the operation, for example, rotate the first mandrel 2 at the fourth angle to the third angle in a counterclockwise direction, so as to form FIGS. 7 to 7 . 8b; then, rotate the second mandrel 2 clockwise to the second angle to form the form shown in FIGS. 5 to 6b; finally, rotate the first mandrel 2 in a counterclockwise direction To the first angle, the shape shown in FIG. 3 to FIG. 4 b is formed.

As shown in FIGS. 11 to 12, which show the second embodiment of the alternately rotatable biaxial hinge, the same reference numerals (symbols) in this embodiment are used to denote the same components compared with the first embodiment, Since this embodiment shares many common components with the first embodiment, only the differences between the two will be described in detail later.

The difference between this embodiment and the first embodiment is that a pair of side walls 13 protrude from opposite sides of the pivot base 1 opposite each other, and a first shaft bolt 16 penetrates the opposite side of the left side. The wall 13 is pivotally connected to an axial swinging member 14 , and the pair of side walls 13 , which are penetrated through the right side by a second shaft bolt 16 , is pivotally connected to a radially movable member 15 . An elongated hole 153 for the second shaft bolt 16 to pass through is formed through the side of the radially movable member 15 , so that the second shaft bolt 16 touches a lower hole end or an upper hole of the elongated hole 153 respectively. Each of the two ends forms a stop, thereby stably restricting the radial displacement of the radially movable member 15 between the pair of side walls 13 on the right side.

In addition, the outer peripheral surface of the first mandrel 2 is provided with a first engaging groove 24 at the position corresponding to the lower arc surface 151 ; and the outer peripheral surface of the second mandrel 3 is provided at the position corresponding to the upper arc surface 152 with at least one first engaging groove 24 . Two engaging grooves 34 .

Further, the first shaft rod 21 is sleeved with a first link ring 25 , and the outer peripheral surface of the first link ring 25 is provided with a position corresponding to the lower guide tenon 141 of the axial swing member 14 as shown in the first embodiment. a first guide groove 23. The first guide groove 23 includes two radial groove segments parallel to each other, and an axial groove segment connected between the two radial groove segments, and a first start end is formed in the first guide groove 23 respectively. 231 , a first terminal 232 (refer to FIG. 2 ), and a right block end 233 and a left block end 234 disposed between the two ends 231 and 232 and opposite to each other. The first start end 231 is at one end of the two radial groove ends, the first terminal end 232 is at the other end of the two radial groove ends, and the right stop end 233 and the left stop end 234 are located at the two diameters The connection between the facing slot segment and the opposite ends of the axial slot segment. In addition, since a rod segment 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 follow the first mandrel 2 Synchronized rotation. The second shaft 32 is also sleeved with a second link ring 35 , and a second guide groove 33 is formed on the outer peripheral surface of the second link ring 35 corresponding to the upper guide tenon 142 of the axial swing member 14 . The second guide groove 33 is an arc-shaped helical groove, and a second start end 331 and a second end end 332 are respectively formed in the second guide groove 33 (refer to FIG. 2 ). A rod segment and a shaft hole of the second link ring 35 are also non-circular shapes corresponding to each other, so that the second link ring 35 can rotate synchronously with the second mandrel 3 .

The effect that this embodiment can obtain is the same as that of the first embodiment, that is, the first mandrel 2 and the second mandrel 3 are rotated alternately to adjust the first bracket A and the second The angle formed between the brackets B enables the body of the electronic device to be in a closed state of 0 degrees relative to the screen, or after it is opened and rotated to 360 degrees, the body and the screen are stacked opposite to each other. combined state. Therefore, please refer to the alternate forms of locking and unlocking shown in FIG. 3 to FIG. 10b for the operation flow, so as to achieve the same effect as the first embodiment.

Therefore, through the implementation of the present invention, the lower guide tenon and the upper guide tenon of the axial swing member are in the corresponding first guide groove of the first mandrel and the second guide groove of the second mandrel. The stop function formed, and the locking and unlocking functions of the radial movable member to the first engaging groove of the first mandrel and the at least one second engaging groove of the second mandrel, so that the first Alternate rotation of a mandrel and the second mandrel is achieved. Therefore, the two embodiments shown in the present invention can improve the problem of insufficient structural strength of the axial movable member in the prior art, and it is difficult to pass the life test requirements, and replace the two sets of stop parts and the two fan-shaped stops of the two mandrels shown in the prior art. The arrangement of the ring achieves the effect of facilitating manufacturing, reducing processing procedures and components to reduce production costs, and it is also helpful for the two mandrels to alternately rotate to positioning, so as to eliminate the influence of the gap during the unlocking and exchange of the two mandrels. It can be called a great structure that has never been seen before for similar items.

The disclosure of the present invention is a preferred embodiment, and any partial changes or modifications originating from the technical idea of the present invention and easily inferred by those skilled in the art will not depart from the scope of the patent protection of the present invention.

Claims (10)

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 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, 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.

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