TWI773563B - Dual shaft hinge structure - Google Patents

Abstract

A dual shaft hinge structure including a hinge base, a first positioning member, a second positioning member, a positioning roller, a first shaft and a second shaft is provided. The first positioning member, the second positioning member and the positioning roller are slidably disposed on the hinge base, wherein the positioning roller is located between the first positioning member and the second positioning member, and contacts the first positioning member and the second positioning member. The first shaft includes a first shaft portion pivoted to the hinge base and a first positioning protrusion protruding from the first shaft portion, wherein the first positioning protrusion contacts the first positioning member. The second rotating shaft includes a second shaft portion pivoted to the hinge base and a second positioning protrusion protruding from the second shaft portion, wherein the second positioning protrusion contacts the second positioning member.

Description

Biaxial hinge structure

The present invention relates to a hinge structure, and more particularly, to a biaxial hinge structure.

The notebook computer is composed of a first body, a second body and a hinge structure, wherein the first body has the ability of logical operation and data access, and the second body has the ability of image display. The second body is connected to the first body through a hinge structure, so as to be rotatably opened and closed relative to the first body. At present, a notebook computer with a dual-axis hinge structure has been proposed to improve the convenience and flexibility of the user when operating the notebook computer.

As far as the notebook computer using the dual-axis hinge structure is concerned, the user can first rotate the second body by an angle in the clockwise direction, and then rotate the first body by another angle in the counterclockwise direction to increase the expansion angle, or Yes, the user can first rotate the second body by an angle in the counterclockwise direction, and then rotate the first body by another angle in the clockwise direction, so as to reduce the deployment angle. All relevant manufacturers are actively improving the double-axis hinge structure to improve the smoothness and reliability of the notebook computer when opening and closing.

The present invention provides a biaxial hinge structure, which helps to improve the smoothness and reliability of operation.

The biaxial hinge structure of an embodiment of the present invention includes a hinge base, a first positioning member, a second positioning member, a positioning wheel, a first rotating shaft and a second rotating shaft. The first positioning member, the second positioning member and the positioning wheel are slidably arranged on the hinge base, wherein the positioning wheel is located between the first positioning member and the second positioning member and contacts the first positioning member and the second positioning member. The first rotating shaft includes a first shaft portion pivoted on the hinge base and a first positioning protrusion protruding from the first shaft portion, wherein the first positioning protrusion contacts the first positioning member. The second rotating shaft includes a second shaft portion pivoted on the hinge base and a second positioning protrusion protruding from the second shaft portion, wherein the second positioning protrusion contacts the second positioning member. After the first rotating shaft rotates relative to the hinge base and the first positioning protrusion moves away from the first positioning member, the second rotating shaft rotates relative to the hinge base, the second positioning protrusion rotating with the second rotating shaft pushes the second positioning member, and The second positioning member pushes the first positioning member through the positioning wheel, so that the first positioning member contacts the first positioning protrusion.

In an embodiment of the present invention, the above-mentioned hinge seat has a first sliding groove, a second sliding groove opposite to the first sliding groove, and a third sliding groove located between the first sliding groove and the second sliding groove. The first positioning piece is slidably arranged in the first chute. The second positioning member is slidably arranged in the second chute. The positioning wheel is slidably connected to the third chute.

In an embodiment of the present invention, the above-mentioned first chute, second chute and third chute are not parallel to each other.

In an embodiment of the present invention, the above-mentioned hinge seat further has a first limiting protrusion and a second limiting protrusion opposite to the first limiting protrusion. The first sliding groove is located between the third sliding groove and the first limiting protrusion, and the second sliding groove is located between the third sliding groove and the second limiting protrusion. The first limiting protrusion has a first limiting surface, and the second limiting protrusion has a second limiting surface and a third limiting surface opposite to the second limiting surface. The first limiting surface falls on the moving path of the first positioning protrusion, and the second positioning protrusion moves between the second limiting surface and the third limiting surface.

In an embodiment of the present invention, the first positioning protrusion and the positioning wheel respectively contact opposite ends of the first positioning member, and the second positioning protrusion and the positioning wheel respectively contact opposite ends of the second positioning member.

In an embodiment of the present invention, in a state, the first rotating shaft rotates along the first rotating direction by a first angle and then stops rotating, and then the second rotating shaft rotates along the second rotating direction opposite to the first rotating direction by more than The rotation stops after the second angle of the first angle. In another state, the second rotating shaft rotates along the first rotation direction by a second angle and then stops rotating, and then the first rotating shaft rotates along the second rotating direction by a first angle and then stops rotating.

In an embodiment of the present invention, the rotation range of the first rotating shaft is 0 degrees to 60 degrees, and the rotation range of the second rotating shaft is 0 degrees to 70 degrees.

A biaxial hinge structure of another embodiment of the present invention includes a hinge base, a first positioning member, a second positioning member, a first rotating shaft, and a second rotating shaft. The first positioning member is fixed on one end of the hinge base, wherein the first positioning member includes a first torsion shaft sleeve. The second positioning member is fixed on the other end of the hinge base, wherein the second positioning member includes a second torsion shaft sleeve opposite to the first torsion shaft sleeve. The first rotating shaft and the second rotating shaft are pivoted on the hinge base. The first torsion sleeve covers and contacts the first rotating shaft. The first torsion sleeve applies a first torsion force to the first rotating shaft rotating in the first rotation direction, and applies a second torsion force greater than the first torsion force to the first rotating shaft rotating in the second rotation direction. The second torsion bushing covers and contacts the second rotating shaft, the second torsion bushing applies a second torsion force to the second rotating shaft rotating in the second rotation direction, and applies a first torsion force to the second rotating shaft rotating in the first rotating direction.

In another embodiment of the present invention, the above-mentioned first torsion force is 0.7 times of the second torsion force.

Based on the above, the biaxial hinge structure of an embodiment of the present invention can control the rotation timing and rotation direction of the first rotating shaft and the second rotating shaft through the first positioning member, the second positioning member and the positioning wheel, and can control the rotation sequence and rotation direction of the first rotating shaft and the second rotating shaft through the first rotating shaft and the hinge base. The structural cooperation between the two and the structural cooperation between the second rotating shaft and the hinge base controls the rotation angle and the rotating direction of the first rotating shaft and the second rotating shaft, thus helping to improve the smoothness and reliability of the operation. The biaxial hinge structure of another embodiment of the present invention can control the rotation sequence of the first rotating shaft and the second rotating shaft through the change of the torsion force applied to the first rotating shaft by the first positioning member and the change of the torsional force exerted by the second positioning member on the first rotating shaft. The rotation direction and rotation angle help to improve the smoothness and reliability of the operation.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

FIG. 1 is a schematic diagram of a biaxial hinge structure according to an embodiment of the present invention. 2 to 4 are schematic side views of the actuation process of the biaxial hinge structure according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 2. In this embodiment, the biaxial hinge structure 100 can be applied to a notebook computer or other suitable electronic devices, and includes a hinge base 110, a first positioning member 120, a second positioning member 130, a positioning member The wheel 140 , the first rotating shaft 150 and the second rotating shaft 160 . The first positioning member 120 , the second positioning member 130 and the positioning wheel 140 are slidably disposed on the hinge base 110 , wherein the positioning wheel 140 is located between the first positioning member 120 and the second positioning member 130 , and the positioning wheel 140 contacts the first positioning member component 120 and the second positioning component 130 .

When the first positioning member 120 pushes the positioning wheel 140, the positioning wheel 140 pushes the second positioning member 130 to adjust the positions of the first positioning member 120, the second positioning member 130 and the positioning wheel 140 on the hinge base 110, and at the same time adjust the position of the first positioning member 120, the second positioning member 130 and the positioning wheel 140 on the hinge base 110. The corresponding relationship between a rotating shaft 150 and the first positioning member 120 and the corresponding relationship between the second rotating shaft 160 and the second positioning member 130 . Correspondingly, when the second positioning member 130 pushes the positioning wheel 140, the positioning wheel 140 pushes the first positioning member 120 to adjust the positions of the first positioning member 120, the second positioning member 130 and the positioning wheel 140 on the hinge base 110, At the same time, the corresponding relationship between the first rotating shaft 150 and the first positioning member 120 and the corresponding relationship between the second rotating shaft 160 and the second positioning member 130 are adjusted.

The first rotating shaft 150 and the second rotating shaft 160 are parallel to each other, and are pivoted on the hinge base 110 . In the first state shown in FIG. 2 , the first rotating shaft 150 and the positioning wheel 140 respectively contact the opposite ends of the first positioning member 120 , and the second rotating shaft 160 and the positioning wheel 140 respectively contact the opposite two opposite ends of the second positioning member 130 . end. That is to say, the first positioning member 120 , the positioning wheel 140 and the second positioning member 130 are sequentially arranged between the first rotating shaft 150 and the second rotating shaft 160 .

In the state shown in FIG. 2 , the first rotating shaft 150 contacts the first positioning member 120 and restricts the sliding freedom of the second positioning member 130 and the positioning wheel 140 on the hinge base 110 . At the same time, the second positioning member 130 contacts the second rotating shaft 160 and restricts the rotational freedom of the second rotating shaft 160 . That is to say, before the first rotating shaft 150 rotates and separates from the first positioning member 120, the second rotating shaft 160 is stopped by the second positioning member 130 and cannot rotate temporarily. Correspondingly, the first positioning member 120, the second positioning member The component 130 and the positioning wheel 140 are temporarily unable to slide.

As shown in FIG. 3 , after the first rotating shaft 150 rotates relative to the hinge base 110 along the first rotation direction R1 , the first rotating shaft 150 is separated from the first positioning member 120 . When the first rotating shaft 150 is separated from the first positioning member 120 , the sliding restriction of the first positioning member 120 , the second positioning member 130 and the positioning wheel 140 on the hinge base 110 is released. As shown in FIG. 4 , the second rotating shaft 160 can rotate relative to the hinge base 110 along a second rotating direction R2 opposite to the first rotating direction R1 , and push the second positioning member 130 , the positioning wheel 140 and the first positioning member 120 , so that the first positioning member 120 slides toward the first rotating shaft 150 and contacts the first rotating shaft 150 again.

In the state shown in FIG. 4 , the second rotating shaft 160 contacts the second positioning member 130 and restricts the sliding freedom of the first positioning member 120 and the positioning wheel 140 on the hinge base 110 . At the same time, the first positioning member 120 contacts the first rotating shaft 150 and restricts the rotational freedom of the first rotating shaft 150 . That is to say, before the second rotating shaft 160 rotates and separates from the second positioning member 130, the first rotating shaft 150 is blocked by the first positioning member 120 and cannot rotate temporarily. Correspondingly, the first positioning member 120, the second positioning member 130 and the positioning wheel 140 cannot slide temporarily.

As shown in FIG. 3 , after the second rotating shaft 160 rotates relative to the hinge base 110 along the first rotation direction R1 , the second rotating shaft 160 is separated from the second positioning member 130 . When the second rotating shaft 160 is separated from the second positioning member 130 , the sliding restriction of the first positioning member 120 , the second positioning member 130 and the positioning wheel 140 on the hinge base 110 is released. As shown in FIG. 2 , the first rotating shaft 150 can rotate relative to the hinge base 110 along the second rotation direction R2 and push the first positioning member 120 , the positioning wheel 140 and the second positioning member 130 , so that the second positioning member 130 slides toward the The second rotating shaft 160 is in contact with the second rotating shaft 160 again.

Please refer to FIG. 1 and FIG. 2 , in this embodiment, the first rotating shaft 150 includes a first shaft portion 151 pivoted on the hinge base 110 and a first positioning protrusion 152 protruding from the first shaft portion 151 , and the The two rotating shafts 160 include a second shaft portion 161 pivoted on the hinge base 110 and a second positioning protrusion 162 protruding from the second shaft portion 161 . In the state shown in FIG. 1 , the first positioning protrusion 152 contacts the first positioning member 120 , and the second positioning protrusion 162 contacts the second positioning member 130 . Further, the first positioning protrusion 152 and the positioning wheel 140 contact opposite ends of the first positioning member 120 respectively, and the second positioning protrusion 162 and the positioning wheel 140 respectively contact opposite ends of the second positioning member 130 .

As shown in FIGS. 2 to 4 , after the first rotating shaft 150 rotates relative to the hinge base 110 along the first rotation direction R1 and the first positioning protrusion 152 moves away from the first positioning member 120 , the second rotating shaft 160 rotates along the second The direction R2 rotates relative to the hinge base 110, the second positioning protrusion 162 rotating with the second shaft 160 pushes the second positioning member 130, and the second positioning member 130 pushes the first positioning member 120 through the positioning wheel 140, so that the first positioning The member 120 slides toward the first rotating shaft 150 and contacts the first positioning protrusion 152 again.

As shown in FIGS. 2 to 4 , after the second rotating shaft 160 rotates relative to the hinge base 110 along the first rotation direction R1 and the second positioning protrusion 162 moves away from the second positioning member 130 , the first rotating shaft 150 rotates along the second The direction R2 rotates relative to the hinge base 110, the first positioning protrusion 152 rotating with the first rotating shaft 150 pushes the first positioning member 120, and the first positioning member 120 pushes the second positioning member 130 through the positioning wheel 140, so that the second positioning member 130 is pushed by the first positioning member 120. The member 130 slides toward the second rotating shaft 160 and contacts the second positioning protrusion 162 again.

Referring to FIG. 2 , in this embodiment, the hinge base 110 has a first sliding groove 111 , a second sliding groove 112 opposite to the first sliding groove 111 , and a second sliding groove 112 located between the first sliding groove 111 and the second sliding groove 112 . The third sliding slot 113 , wherein the first positioning member 120 is slidably disposed in the first sliding slot 111 , and the opposite ends of the first positioning member 120 can be located outside the first sliding slot 111 to contact the first rotating shaft 150 and the positioning member respectively. Wheel 140. The second positioning member 130 is slidably disposed in the second sliding groove 112 , and opposite ends of the second positioning member 130 can be located outside the second sliding groove 112 to contact the second rotating shaft 160 and the positioning wheel 140 respectively. In addition, the positioning wheel 140 is slidably connected to the third chute 113 .

Further, the extending direction of the first sliding groove 111 determines the sliding direction of the first positioning member 120 , wherein the extending direction of the second sliding groove 112 determines the sliding direction of the second positioning member 130 , and the sliding direction of the third sliding groove 113 The extension direction determines the sliding direction of the positioning wheel 140 . Furthermore, the extension direction of the first chute 111 , the extension direction of the second chute 112 and the extension direction of the third chute 113 are not parallel to each other, and the third chute 113 is between the first chute 111 and the second chute 113 . The chute 112 extends between them. In addition, the first sliding groove 111 extends between the positioning wheel 140 and the first rotating shaft 150 , and the second sliding groove 112 extends between the positioning wheel 140 and the second rotating shaft 160 .

Please refer to FIG. 1 and FIG. 2 , in this embodiment, the hinge base 110 further has a first limiting protrusion 114 and a second limiting protrusion 115 opposite to the first limiting protrusion 114 , wherein the first limiting protrusion 115 The protrusions 114 are disposed corresponding to the first positioning protrusions 152 of the first rotating shaft 150 , and the second limiting protrusions 115 are disposed corresponding to the second positioning protrusions 162 of the second rotating shaft 160 . Specifically, the first sliding groove 111 is located between the third sliding groove 113 and the first limiting protrusion 114 , and the second sliding groove 112 is located between the third sliding groove 113 and the second limiting protrusion 115 .

As shown in FIG. 2 , the first limiting protrusion 114 has a first limiting surface 114 a , and the first limiting surface 114 a falls on the moving path of the first positioning protrusion 152 . In addition, the second limiting protrusion 115 has a second limiting surface 115a and a third limiting surface 115b opposite to the second limiting surface 115a, and the second positioning protrusion 162 is located on the second limiting surface 115a and the third limiting surface 115b. move between the limiting surfaces 115b.

As shown in FIG. 2 , the first positioning protrusion 152 is separated from the first limiting surface 114 a of the first limiting protrusion 114 . As shown in FIGS. 2 and 3 , when the first rotating shaft 150 rotates along the first rotation direction R1 , the first positioning protrusion 152 moves toward the first limiting surface 114 a. When the first positioning protrusion 152 contacts the first limiting surface 114a, it is stopped by the first limiting surface 114a, and the first rotating shaft 150 stops rotating after rotating by the first angle α. As shown in FIG. 3 , the first positioning member 120 and the first limiting protrusion 114 respectively contact opposite sides of the first positioning protrusion 152 .

As shown in FIG. 2 and FIG. 3 , the second positioning protrusion 162 contacts the second limiting surface 115 a of the second limiting protrusion 115 . Further, the second positioning member 130 and the second limiting protrusion 115 respectively contact two opposite sides of the second positioning protrusion 162 . Afterwards, as shown in FIGS. 3 and 4 , when the second rotating shaft 160 rotates along the second rotation direction R2 , the second positioning protrusions 162 move away from the second limiting surface 115 a and move toward the third limiting surface 115 b . When the second positioning protrusion 162 contacts the third limiting surface 115b, it is stopped by the third limiting surface 115b, and the second rotating shaft 160 stops rotating after rotating by the second angle β.

For example, the second angle β may be 70 degrees, and the first angle α may be 60 degrees. That is, the rotation range of the first rotating shaft 150 may be 0 degrees to 60 degrees, and the rotation range of the second rotating shaft 160 may be 0 degrees to 70 degrees.

As shown in FIG. 4 , the second positioning protrusion 162 contacts the third limiting surface 115 b of the second limiting protrusion 115 . Next, as shown in FIGS. 3 and 4 , when the second shaft 160 rotates along the first rotation direction R1 , the second positioning protrusions 162 move away from the third limiting surface 115b and move toward the second limiting surface 115a. When the second positioning protrusion 162 contacts the second limiting surface 115a, it is stopped by the second limiting surface 115a, and the second rotating shaft 160 stops rotating after rotating by the second angle β.

Afterwards, as shown in FIGS. 2 and 3 , when the first rotating shaft 150 rotates along the second rotation direction R2 , the first positioning protrusion 152 moves away from the first limiting surface 114 a. When the first positioning protrusion 152 contacts the first positioning member 120 and the second positioning protrusion 162 contacts the second positioning member 130 , the first rotating shaft 150 stops rotating after rotating by the first angle α.

As shown in FIGS. 1 and 2 , the first positioning protrusion 152 is an arc-shaped protrusion or a fan-shaped protrusion surrounding the first shaft portion 151 , and the second positioning protrusion 162 is an arc-shaped protrusion surrounding the second shaft portion 161 . block or fan-shaped bump. In addition, the first limiting protrusion 114 is an arc-shaped protrusion or a fan-shaped protrusion surrounding the first shaft portion 151 , and the second limiting protrusion 115 is an arc-shaped protrusion or a fan-shaped protrusion surrounding the second shaft portion 161 . .

In short, the biaxial hinge structure 100 can control the rotation sequence and the rotation direction of the first rotating shaft 150 and the second rotating shaft 160 through the first positioning member 120, the second positioning member 130 and the positioning wheel 140, and through the first rotating shaft 150 and the second rotating shaft 160. The structural cooperation between the hinge bases 110 and the structural cooperation between the second rotating shaft 160 and the hinge base 110 controls the rotation angle and rotation direction of the first rotating shaft 150 and the second rotating shaft 160 , thus helping to improve the smoothness and reliability of operation .

5 to 7 are schematic side views of the actuation process of the biaxial hinge structure according to another embodiment of the present invention. Referring to FIG. 5 , in this embodiment, the dual-axis hinge structure 200 can be applied to a notebook computer or other suitable electronic devices, and includes a hinge base 210 , a first positioning member 220 , a second positioning member 230 , and a first rotating shaft 250 and the second rotating shaft 260 . The first positioning member 220 and the second positioning member 230 are respectively fixed to opposite ends of the hinge base 210 , wherein the first positioning member 220 includes a first torsion shaft sleeve 221 , and the second positioning member 230 includes a relative to the first torsion shaft The second torsion shaft sleeve 231 of the sleeve 221 . In addition, the first torsion shaft sleeve 221 and the second torsion shaft sleeve 231 have the same or similar structural designs, and are non-closed shaft sleeves. The cross-sectional contours of the first torsion bushing 221 and the second torsion bushing 231 are generally C-shaped and have slits.

The first rotating shaft 250 and the second rotating shaft 260 are parallel to each other, and are pivoted on the hinge base 210 . The first torsion sleeve 221 covers the first rotating shaft 250 , and the second torsion sleeve 231 covers the second rotating shaft 260 . Further, the inner wall surface of the first torsion shaft sleeve 221 contacts the outer wall surface of the first rotating shaft 250 , and the inner wall surface of the second torsion shaft sleeve 231 contacts the outer wall surface of the second rotating shaft 260 . Furthermore, based on the cooperation of the geometric contour between the inner wall surface of the first torsion sleeve 221 and the outer wall surface of the first rotating shaft 250 , the first torsion sleeve 221 can exert different effects on the first rotating shaft 250 during forward and reverse rotation. torque. On the other hand, based on the cooperation of the geometric contour between the inner wall surface of the second torsion shaft sleeve 231 and the outer wall surface of the second rotating shaft 260 , the second torsion shaft sleeve 231 can exert different effects on the second rotating shaft 260 during forward and reverse rotation. torque.

In the state shown in FIG. 5 , the first torsion shaft 221 applies a first torsion force to the first rotation shaft 250 , and the second torsion shaft sleeve 231 applies a second torsion force to the second rotation shaft 260 . Because the second torsion force is greater than the first torsion force, the first rotating shaft 250 can be forced first and rotate along the first rotation direction R1 , as shown in FIG. 6 . After the first rotating shaft 250 rotates along the first rotation direction R1 by the first angle α, the first rotating shaft 250 stops rotating. Next, the second rotating shaft 260 can be forced and rotated along the second rotation direction R2, as shown in FIG. 7 . After the second rotating shaft 260 rotates along the second rotation direction R2 by the second angle β, the second rotating shaft 260 stops rotating.

For example, the second angle β may be 70 degrees, and the first angle α may be 60 degrees. That is to say, the rotation range of the first rotation shaft 250 may be 0 degrees to 60 degrees, and the rotation range of the second rotation shaft 260 may be 0 degrees to 70 degrees. On the other hand, the first torque is 0.7 times the second torque.

In the state shown in FIG. 7 , the second torsion shaft sleeve 231 applies a first torsion force to the second shaft 260 , and the first torsion shaft 221 applies a second torsion force to the first shaft 250 . Since the second torsion force is greater than the first torsion force, the second rotating shaft 260 can be subjected to force first and rotate along the first rotation direction R1 , as shown in FIG. 6 . After the second rotating shaft 260 rotates along the first rotation direction R1 by the second angle β, the second rotating shaft 260 stops rotating. Next, the first rotating shaft 250 can be forced and rotated along the second rotation direction R2, as shown in FIG. 5 . After the first rotating shaft 250 rotates along the second rotation direction R2 by the first angle α, the first rotating shaft 250 stops rotating.

In short, the biaxial hinge structure 200 can control the first and second shafts 250 and 260 through the change of the torsion force applied to the first shaft 250 by the first positioning member 220 and the change of the torque applied to the second shaft 260 by the second positioning member 230 . The rotation timing, rotation direction and rotation angle are different, so it helps to improve the smoothness and reliability of operation.

FIG. 8 and FIG. 9 are positioning members of other embodiments. Referring to FIG. 8 , the positioning member 220 a can be applied to the biaxial hinge structure 200 (as shown in FIG. 5 ), and the positioning member 220 a has a torsion sleeve 221 a. The cross-sectional profile of the torsion sleeve 221a is generally C-shaped and has a slit. Specifically, a part of the inner wall surface of the torsion sleeve 221a is a flat surface, and the flat surface and the slit are arranged to face each other. Based on the geometric contour design of the inner wall surface of the torsion sleeve 221a, the rotating shaft can be automatically closed during the process of rotating the rotating shaft to an angle of 0 degrees.

Referring to FIG. 9 , the positioning member 220b can be applied to the biaxial hinge structure 200 (as shown in FIG. 5 ), and the positioning member 220b has a torsion sleeve 221b. The cross-sectional profile of the torsion sleeve 221b is generally C-shaped and has a slit. In detail, a part of the inner wall surface of the torsion sleeve 221b is a plane, wherein the plane and the slit are arranged opposite to each other, and the torsion sleeve 221b has a groove concave in the plane. Based on the geometric outline design of the torsion sleeve 221b, the rotating shaft can be automatically closed during the process of rotating the rotating shaft to an angle of 0 degrees.

To sum up, the biaxial hinge structure of an embodiment of the present invention can control the rotation sequence and rotation direction of the first rotating shaft and the second rotating shaft through the first positioning member, the second positioning member and the positioning wheel, and through the first rotating shaft and the second rotating shaft. The structural cooperation between the hinge bases and the structural cooperation between the second rotating shaft and the hinge base controls the rotation angle and rotation direction of the first rotating shaft and the second rotating shaft, thus helping to improve the smoothness and reliability of operation. The biaxial hinge structure of another embodiment of the present invention can control the rotation sequence of the first rotating shaft and the second rotating shaft through the change of the torsion force applied to the first rotating shaft by the first positioning member and the change of the torsional force exerted by the second positioning member on the first rotating shaft. The rotation direction and rotation angle help to improve the smoothness and reliability of the operation.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100, 200: Biaxial hinge structure 110, 210: hinge seat 111: The first chute 112: The second chute 113: The third chute 114: The first limit protrusion 114a: First limit surface 115: The second limit protrusion 115a: Second limit surface 115b: The third limit surface 120, 220: The first positioning piece 130, 230: Second positioning piece 140: positioning wheel 150, 250: the first reel 151: The first shaft 152: The first positioning protrusion 160, 260: the second shaft 161: Second shaft 162: Second positioning protrusion 220a, 220b: positioning pieces 221a, 221b: Torsion bushing 221: The first torsion sleeve 231: Second torsion bushing α: first angle β: second angle R1: The first rotation direction R2: Second rotation direction

FIG. 1 is a schematic diagram of a biaxial hinge structure according to an embodiment of the present invention. 2 to 4 are schematic side views of the actuation process of the biaxial hinge structure according to an embodiment of the present invention. 5 to 7 are schematic side views of the actuation process of the biaxial hinge structure according to another embodiment of the present invention. FIG. 8 and FIG. 9 are positioning members of other embodiments.

100: Biaxial hinge structure 110: Hinged seat 114: The first limit protrusion 115: The second limit protrusion 120: The first positioning piece 130: Second positioning piece 140: positioning wheel 150: The first reel 151: The first shaft 152: The first positioning protrusion 160: The second reel 161: Second shaft 162: Second positioning protrusion

Claims (11)

A biaxial hinge structure, comprising: hinge seat; The first positioning member is slidably arranged on the hinge seat; The second positioning member is slidably arranged on the hinge seat; a positioning wheel, slidably disposed on the hinge base, wherein the positioning wheel is located between the first positioning member and the second positioning member, and contacts the first positioning member and the second positioning member; a first rotating shaft, comprising a first shaft portion pivoted on the hinge base and a first positioning protrusion protruding from the first shaft portion, wherein the first positioning protrusion contacts the first positioning member; and The second rotating shaft includes a second shaft portion pivoted on the hinge base and a second positioning protrusion protruding from the second shaft portion, wherein the second positioning protrusion contacts the second positioning member, After the first rotating shaft rotates relative to the hinge base and the first positioning protrusion moves away from the first positioning member, the second rotating shaft rotates relative to the hinge base, and the second positioning protrusion rotates with the second rotating shaft The second positioning member pushes the second positioning member, and the second positioning member pushes the first positioning member through the positioning wheel, so that the first positioning member contacts the first positioning protrusion. The biaxial hinge structure according to claim 1, wherein the hinge seat has a first sliding groove, a second sliding groove opposite to the first sliding groove, and a sliding groove located between the first sliding groove and the second sliding groove. The third chute, the first positioning piece is slidably arranged in the first chute, the second positioning piece is slidably arranged in the second chute, and the positioning wheel is slidably connected to the third chute. The biaxial hinge structure of claim 2, wherein the first chute, the second chute and the third chute are not parallel to each other. like The biaxial hinge structure according to claim 2, wherein the hinge seat further has a first limiting protrusion and a second limiting protrusion opposite to the first limiting protrusion, and the first chute is located on the first limiting protrusion. Between the third chute and the first limiting protrusion, the second chute is located between the third chute and the second limiting protrusion, and the first limiting protrusion has a first limiting surface , and the second limiting protrusion has a second limiting surface and a third limiting surface opposite to the second limiting surface, and the first limiting surface falls on the moving path of the first positioning protrusion, And the second positioning protrusion moves between the second limiting surface and the third limiting surface. The biaxial hinge structure of claim 1, wherein the first positioning protrusion and the positioning wheel respectively contact opposite ends of the first positioning member, and the second positioning protrusion and the positioning wheel respectively contact the second positioning member Opposite ends of the positioning piece. The biaxial hinge structure of claim 1, wherein the rotation range of the first rotation shaft is 0 degrees to 60 degrees, and the rotation range of the second rotation shaft is 0 degrees to 70 degrees. The biaxial hinge structure of claim 1, wherein in a state, the first rotating shaft rotates along the first rotation direction by a first angle and then stops rotating, and then the second rotating shaft rotates in the opposite direction to the first rotation The second rotation direction of the direction rotates by a second angle greater than the first angle and then stops rotating. In another state, the second shaft rotates along the first rotation direction by the second angle and then stops rotating. Then, the first rotation axis stops rotating. The rotating shaft stops rotating after rotating by the first angle along the second rotating direction. A biaxial hinge structure, comprising: hinge seat; a first positioning member, fixed on one end of the hinge base, wherein the first positioning member includes a first torsion shaft sleeve; a second positioning member fixed to the other end of the hinge base, wherein the second positioning member includes a second torsion bushing relative to the first torsion bushing; The first rotating shaft is pivoted on the hinge seat, the first torsion shaft sleeve covers and contacts the first rotating shaft, the first torsion shaft sleeve applies a first torsion force to the first rotating shaft rotating along the first rotation direction, and applying a second torsion force greater than the first torsion force to the first shaft rotating in a second rotational direction opposite to the first rotational direction; and A second shaft is pivoted on the hinge seat, the second torsion sleeve covers and contacts the second shaft, and the second torsion sleeve applies the second torsion to the second shaft that rotates along the second rotation direction , and the first torsion force of the second shaft rotating in the first rotation direction. The biaxial hinge structure of claim 8, wherein the first torsion force is 0.7 times the second torsion force. The biaxial hinge structure of claim 8, wherein the rotation range of the first rotation shaft is 0 degrees to 60 degrees, and the rotation range of the second rotation shaft is 0 degrees to 70 degrees. The biaxial hinge structure according to claim 8, wherein in a state, the first rotating shaft rotates along the first rotation direction by a first angle and then stops rotating, and then the second rotating shaft rotates along the second rotating direction more than The rotation stops after the second angle of the first angle. In another state, the second shaft rotates along the first rotation direction by the second angle and then stops rotating. Then, the first shaft rotates along the second rotation direction. Stop rotating after the first angle.

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