Dual-axis hinge with flexible screen

Abstract

The present invention belongs to the technical field of double-axis hinges, specifically a double-axis hinge implemented in conjunction with a flexible screen, including a rotating shaft and an shaft mounting seat, the number of the rotating shafts being two, and the main body of the shaft mounting seat is provided with mounting holes corresponding to the two rotating shafts; the outer sides of the two rotating shafts are both sleeved with limit sleeves, and the front sides of the peripheries of the limit sleeves on both sides are provided with limit notches; support blocks are provided on the upper and lower sides of the rear side of the shaft mounting seat, and an equal-arm lever is movably connected between the upper and lower support blocks, and the equal-arm lever includes a lever body, and the left and right ends of the lever body are respectively provided with force-bearing ends acted upon by two limit sleeves, and the force-bearing ends on both sides respectively correspond to the two limit notches; the present invention does not need to provide the working space required for the sliding of the movable switching piece, can avoid the incorrect switching of the rotating shaft caused by the displacement of the movable switching piece, and thereby can reduce the probability of incorrect switching of the two rotating shafts.

Description

Technical Field

[0001] The present invention relates to the technical field of biaxial hinges, and specifically to a biaxial hinge implemented in conjunction with a flexible screen. Background Art

[0002] The dual-axis hinge in the flexible screen is a hinge that uses a movable switching piece to enable the dual axes to switch and rotate. Existing dual-axis hinges, such as patent publication numbers TWM584450U, TWI763516B, TWM625917U, TWM625897U, TWM581358U, etc., are first temporarily restricted by a movable switching piece in the implementation process (at this time, one of the two axes can rotate, and the other cannot rotate). When the rotatable axis rotates to the limit, the rotatable axis will drive the movable switching piece to produce displacement. After the movable switching piece is displaced, the movable switching piece will release the existing restriction and temporarily restrict the other axis (at this time, the originally rotatable axis is fixed, and the originally fixed axis can rotate). Through the back-and-forth displacement of the movable switching piece, the two axes are respectively restricted in a single way (that is, only one of the two axes can always rotate), thereby achieving the purpose of axis switching and rotation.

[0003] The size of the current dual-axis hinge is limited by the movable space of the movable switching piece, and the movable space of the movable switching piece is difficult to miniaturize, which is not conducive to the miniaturization of the volume of the dual-axis hinge, and will in turn affect the use of dual-axis hinges by flexible screens; in addition, there is a risk of incorrect actuation of the movable switching piece during the back-and-forth displacement process, and incorrect actuation of the movable switching piece will cause the axis to fail to rotate normally. Summary of the Invention

[0004] The purpose of the present invention is to provide a biaxial hinge for use with a flexible screen to solve the problem in the above-mentioned background technology that the size of the biaxial hinge is limited by the movable space of the movable switching piece, which is not conducive to miniaturization of the overall volume.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dual-axis hinge implemented with a flexible screen, comprising a rotating shaft and an axis mounting seat, wherein the number of the rotating shafts is two, and the body of the axis mounting seat is provided with mounting holes corresponding to the two rotating shafts;

[0006] The outer sides of the two rotating shafts are both provided with limiting sleeves, and the front sides of the peripheries of the limiting sleeves on both sides are provided with limiting notches;

[0007] Support blocks are provided on the upper and lower sides of the rear side of the shaft mounting seat, and an equal-arm lever is movably connected between the upper and lower support blocks. The equal-arm lever includes a lever body, and the left and right ends of the lever body are respectively provided with force-bearing ends acted upon by two limit sleeves, and the force-bearing ends on both sides respectively correspond to the two limit notches;

[0008] When the rotating shaft rotates, the force-bearing end on one side of the equal-arm lever is located in the limiting notch on the rotating limiting sleeve, and the force-bearing end on the other side of the equal-arm lever is fitted with the front side of the non-rotating limiting sleeve.

[0009] Preferably, a mounting groove for accommodating the equal-arm lever is provided on the rear side of the body of the shaft mounting seat, and the mounting groove is located between the upper and lower support blocks.

[0010] Preferably, a limiting wheel is provided on the outer side of the rotating shaft, and a limiting block for limiting the rotation angle of the limiting wheel is provided on the front side of the shaft mounting seat, and the limiting block is located between the mounting holes on both sides.

[0011] Preferably, the left and right ends of the limiting block are provided with a stop plane that can resist the limiting wheel on the side close to the limiting wheel, and a stop slope connected to the stop plane. The stop planes on both sides are centrally symmetrical, and the stop slopes on both sides are also centrally symmetrical.

[0012] Preferably, a track groove is provided on the outer side of the body of the limiting wheel, and the limiting wheel is provided with a conflicting plane at the end of the track groove, which conflicts with the stop plane.

[0013] Preferably, the two limiting sleeves are both configured as planes on one side close to the shaft mounting seat.

[0014] Preferably, the outer sides of the two rotating shafts are sleeved with a torque generating assembly, and the torque generating assembly is located at the rear side of the limiting sleeve.

[0015] Preferably, it further comprises an auxiliary support plate, wherein the auxiliary support plate is located between the torque generating assembly and the limiting sleeve, and a through hole for two rotating shafts to pass through is opened on the main body of the auxiliary support plate.

[0016] Preferably, the upper and lower ends of the lever body are both provided with assembly bosses movably connected to the support blocks, and the rear side of the lever body is provided with an auxiliary positioning block, and the auxiliary positioning block is located between the support blocks on both sides.

[0017] Preferably, the rear side of the lever body is configured as an arc-shaped surface.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) The equal-arm lever in the biaxial hinge of the present invention does not shift during the switching operation of the two rotating shafts, which changes the implementation scheme of the movable switching plate used in existing biaxial hinges. Because the present invention does not require the working space required for the sliding movement of the movable switching plate, the size of the biaxial hinge can be reduced, making the structure of the biaxial hinge more compact.

[0020] 2) Since the present invention does not require a working space for the movable switching piece to slide, it can avoid the incorrect switching of the rotating shaft caused by the displacement of the movable switching piece, thereby reducing the probability of incorrect switching of the two rotating shafts; in addition, the dual-axis hinge does not require the use of a movable switching piece, which can solve the problem of the risk of incorrect actuation of the movable switching piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structural decomposition of the present invention;

[0023] Figure 3 This is a schematic diagram of the equal-arm lever structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the shaft structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the limiting sleeve of the present invention;

[0026] Figure 6 This is a schematic diagram of the shaft mounting seat structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the limiting block structure of the present invention;

[0028] Figure 8 This is a schematic cross-sectional view of the structure of the present invention in which the first shaft is rotatable;

[0029] Figure 9 For the present invention Figure 8 AA-axis cross-sectional structural diagram;

[0030] Figure 10 For the present invention Figure 8 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0031] Figure 11 This is a schematic cross-sectional view of the structure of the second rotatable shaft of the present invention;

[0032] Figure 12 For the present invention Figure 11 Schematic diagram of the cross-sectional structure in the CC direction;

[0033] Figure 13 For the present invention Figure 11 Schematic diagram of the cross-sectional structure in the DD direction.

[0034] In the figure: 10 rotating shaft, 101 limiting wheel, 102 track groove, 20 shaft mounting seat, 201 mounting hole, 202 mounting groove, 203 support block, 21 limiting block, 211 stop plane, 212 stop inclined surface, 30 limiting sleeve, 301 limiting notch, 40 equal-arm lever, 41 lever body, 42 connecting boss, 43 auxiliary positioning block, 44 force-bearing end, 50 auxiliary support plate, 60 torque generating assembly. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0037] Example:

[0038] See also Figure 1-13 The present invention provides a technical solution: a dual-axis hinge implemented with a flexible screen, including a rotating shaft 10 and an axis mounting seat 20, the number of the rotating shafts 10 is two, the two rotating shafts 10 are respectively a first axis 11 and a second axis 12, the outer sides of the two rotating shafts 10 are sleeved with a limiting sleeve 30, the rotating shaft 10 includes a flat shaft, the body of the limiting sleeve 30 is provided with a flat groove corresponding to the flat shaft, the rotating shaft 10 can drive the limiting sleeve 30 to rotate synchronously, the number of the limiting sleeve 30 is also two, the first limiting sleeve 31 is sleeved on the outer side of the first shaft 11, and the second limiting sleeve 32 is sleeved on the outer side of the second shaft 12, and the front sides of the peripheries of the limiting sleeves 30 on both sides are provided with limiting notches 301;

[0039] The body of the shaft mounting seat 20 is provided with mounting holes 201 corresponding to the two rotating shafts 10. The mounting holes 201 are cylindrical holes. When the rotating shaft 10 passing through the mounting holes 201 rotates, the shaft mounting seat 20 does not rotate with the rotating shaft 10.

[0040] Support blocks 203 are provided on the upper and lower sides of the rear side of the shaft mounting seat 20. An equal-arm lever 40 is movably connected between the upper and lower support blocks 203. The equal-arm lever 40 uses the two support blocks 203 as movable fulcrums and can swing around the axis between the two movable fulcrums.

[0041] The equal-arm lever 40 includes a lever body 41. The left and right ends of the lever body 41 are respectively provided with force-bearing ends 44 acted upon by two limiting sleeves 30. The force-bearing ends 44 on both sides correspond to two limiting notches 301 respectively. The rotation of the limiting sleeve 30 is restricted by the force-bearing ends 44. When the force-bearing ends 44 are trapped in the limiting notches 301, the limiting notches 301 corresponding to the force-bearing ends 44 cannot rotate. The limiting sleeves 30 and the rotating shaft 10 corresponding to the limiting notches 301 cannot rotate either.

[0042] When the rotating shaft 10 rotates, the force-bearing end 44 on one side of the equal-arm lever 40 is located in the limiting notch 301 on the rotating limiting sleeve 30, and the force-bearing end 44 on the other side of the equal-arm lever 40 is in contact with the front side of the non-rotating limiting sleeve 30. At the same time, only one of the force-bearing ends 44 on both sides will fall into the limiting notch 301, that is, at the same time, only one of the rotating shaft 10 can rotate.

[0043] See also Figures 8 to 10 When the first limiting sleeve 32 is engaged, the first limiting sleeve 32 is engaged with the first limiting sleeve 31 and the second limiting sleeve 32 is engaged with the first limiting sleeve 31. When the first limiting sleeve 32 is engaged, the first limiting sleeve 32 is engaged with the first limiting sleeve 31 and the second limiting sleeve 32 is engaged with the first limiting sleeve 31. When the first limiting sleeve 32 is engaged, the first limiting sleeve 32 is engaged with the first limiting sleeve 31 and the second limiting sleeve 32 is engaged with the first limiting sleeve 31.

[0044] See also Figures 11 to 13When the rotation state of the equal-arm lever 40 is no longer restricted, once the double-axis hinge continues to be forced, the second limiting sleeve 32 will push the equal-arm lever 40, causing the angle of the equal-arm lever 40 to change. At this time, the force-bearing end 44 at the right end of the equal-arm lever 40 disengages from the limiting notch 301 on the front side of the second limiting sleeve 32, and the front surface of the second limiting sleeve 32 begins to contact the force-bearing end 44 at the left end of the equal-arm lever 40, thereby allowing the second shaft 12 to rotate. At the same time, the force-bearing end 44 at the left end of the equal-arm lever 40 is trapped in the limiting notch 301 on the front side of the first limiting sleeve 31, and the first shaft 11 is restricted from rotating by the first limiting sleeve 31; when the limiting notch 301 on the second limiting sleeve 32 is rotated to a certain angle, the second limiting sleeve 3 2 is aligned with the force-bearing end 44 of the right end of the equal-arm lever 40. At this time, the rotation state of the equal-arm lever 40 is restored to freedom again, so that the switching rotation of the first axis 11 and the second axis 12 can be realized; since the equal-arm lever 40 does not move during the actuation of the double-axis hinge, the implementation scheme of the movable switching piece commonly used in the existing double-axis hinge is changed. The double-axis hinge does not need to change the space required for the sliding of the movable switching piece to realize the switching rotation of the two rotating shafts 10. This not only reduces the probability of errors when the two rotating shafts 10 are switched, but also improves the compactness of the double-axis hinge structure, thereby reducing the volume of the double-axis hinge. Applying this small double-axis hinge to the flexible screen makes it more convenient to fold the flexible screen.

[0045] See also Figure 3 、 Figure 6 and Figure 8 The rear side of the body of the shaft mounting seat 20 is provided with a mounting groove 202 for accommodating the equal-arm lever 40. The mounting groove 202 is located between the upper and lower side support blocks 203. The upper and lower side support blocks 203 are both arranged in a claw shape to assemble the connecting part on the equal-arm lever 40.

[0046] See also Figure 2 、 Figure 4 、 Figure 7 、 Figure 10 、 Figure 13 A limiting block 21 is provided on the front side of the shaft mounting seat 20, and the limiting block 21 is located between the mounting holes 201 on both sides; a limiting wheel 101 is provided on the outer side of the two rotating shafts 10. After the rotating shaft 10 is assembled, the limiting wheels 101 on the two rotating shafts 10 are respectively located on the left and right sides of the limiting block 21. The limiting block 21 is used to limit the rotation angle of the limiting wheels 101 on both sides. At least one of the limiting wheel 101 and the limiting sleeve 30 on the same rotating shaft 10 is not integrally formed with the rotating shaft 10 to facilitate the assembly of the rotating shaft 10;

[0047] The left and right ends of the limiting block 21 are both provided with a stop plane 211. The stop plane 211 is on the side close to the limiting wheel 101 and is used to abut the limiting wheel 101 to limit the rotation angle of the limiting wheel 101. The left and right ends of the limiting block 21 are also provided with a stop slope 212 connected to the stop plane 211. The stop planes 211 on both sides are symmetrical about the center and parallel to each other. The stop slopes 212 on both sides are also symmetrical about the center and parallel to each other.

[0048] A track groove 102 is provided on the outside of the body of the limiting wheel 101. The track groove 102 is composed of a defective part of the limiting wheel 101. The track groove 102 is located on the side of the limiting wheel 101 close to the shaft mounting seat 20. The surface of the shaft mounting seat can serve as a side wall of the track groove 102. The left and right ends of the limiting block 21 respectively extend into the track grooves 102 of the limiting wheels 101 on both sides. The limiting wheel 101 is provided with a conflicting plane at the end of the track groove 102 that conflicts with the stop plane 211. During the rotation of the limiting wheel 101, when the conflicting plane is in contact with the stop plane 211, the rotation of the limiting wheel 101 can be stopped by the conflict limiting of the stop plane 211.

[0049] The two limiting sleeves 30 are both set to be flat on the side close to the shaft mounting seat 20, that is, the limiting sleeves 30 on the side close to the shaft mounting seat 20, except for the part forming the limiting notch 301, the rest are all flat. The flat surface can facilitate the rotation of the limiting sleeve 30 when it contacts the force-bearing end 44.

[0050] See also Figure 1 and Figure 2 , the outer sides of the two rotating shafts 10 are both sleeved with a torque generating assembly 60, the torque generating assembly 60 is located on the rear side of the limit sleeve 30, and the torque generating assembly 60 can be implemented according to any method in the current field of dual-axis hinges; the torque generating assembly 60 includes a first torque generating assembly 61 and a second torque generating assembly 62, the first torque generating assembly 61 is sleeved on the outer side of the first shaft 11, and the first torque generating assembly 61 provides the first shaft 11 with the torque required during the rotation process, the second torque generating assembly 62 is sleeved on the outer side of the second shaft 12, and the second torque generating assembly 62 provides the second shaft 12 with the torque required during the rotation process.

[0051] See also Figure 1 and Figure 2 The device also includes an auxiliary support plate 50, which is located between the torque generating assembly 60 and the limit sleeve 30. The main body of the auxiliary support plate 50 is provided with a through hole for the two rotating shafts 10 to pass through; the auxiliary support plate 50 can work with the coaxial mounting seat 20 to stabilize the movement of the first shaft 11 and the second shaft 12, and can also block the equal-arm lever 40 to reduce the erroneous interference of other objects on the movement of the equal-arm lever 40.

[0052] See also Figure 2 and Figure 3 The upper and lower ends of the lever body 41 are provided with assembly bosses 42 that are movably connected to the support block 203. The rear side of the lever body 41 is provided with an auxiliary positioning block 43. The auxiliary positioning block 43 is located between the support blocks 203 on both sides. After the equal-arm lever 40 is assembled, the upper and lower support blocks 203 are clamped on the upper and lower sides of the auxiliary positioning block 43, which can prevent the auxiliary positioning block 43 from jumping up and down, thereby avoiding the equal-arm lever 40 from erroneous offset, thereby ensuring the correct operation of the equal-arm lever 40.

[0053] See also Figure 3 and Figure 8 The lever body 41 is not a straight part. The lever body 41 is set as an arc surface away from the shaft mounting seat 20. Furthermore, the force-bearing ends 44 on the left and right sides of the lever body 41 are slightly bent. When the force-bearing end 44 is tilted relative to the lever body 41, the lever body 41 will not protrude excessively from the mounting groove 202, which is beneficial to reducing the working space required for the equal-arm lever 40; in addition, the slight bending of the force-bearing end 44 can also reduce the probability of an erroneous collision between the force-bearing end 44 and the limit sleeve 30.

[0054] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure signs in the claims should not be regarded as limiting the claims involved.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dual-axis hinge implemented with a flexible screen, characterized by: It comprises a rotating shaft (10) and a shaft mounting seat (20), wherein the number of the rotating shafts (10) is two, and the body of the shaft mounting seat (20) is provided with mounting holes (201) corresponding to the two rotating shafts (10); The outer sides of the two rotating shafts (10) are both provided with limiting sleeves (30), and the front sides of the peripheries of the limiting sleeves (30) on both sides are provided with limiting notches (301); Support blocks (203) are provided at the upper and lower sides of the rear side of the shaft mounting seat (20), and an equal-arm lever (40) is rotatably connected between the upper and lower support blocks (203). The equal-arm lever (40) includes a lever body (41), and the left and right ends of the lever body (41) are respectively provided with force-bearing ends (44) acted upon by two limiting sleeves (30), and the force-bearing ends (44) on both sides respectively correspond to the two limiting notches (301); When the rotating shaft (10) rotates, the force-bearing end (44) on one side of the equal-arm lever (40) is located in the limiting notch (301) on the rotating limiting sleeve (30), and the force-bearing end (44) on the other side of the equal-arm lever (40) is in contact with the front side of the non-rotating limiting sleeve (30); A limiting wheel (101) is provided on the outer side of the rotating shaft (10), and a limiting block (21) for limiting the rotation angle of the limiting wheel (101) is provided on the front side of the shaft mounting seat (20), and the limiting block (21) is located between the mounting holes (201) on both sides; The left and right ends of the limiting block (21) are both provided with a stop plane (211) capable of contacting the limiting wheel (101) and a stop slope (212) connected to the stop plane (211) on one side close to the limiting wheel (101), and the stop planes (211) on both sides are centrally symmetrical, and the stop slopes (212) on both sides are also centrally symmetrical; The upper and lower ends of the lever body (41) are both provided with assembly bosses (42) movably connected to the support blocks (203), and the rear side of the lever body (41) is provided with an auxiliary positioning block (43), and the auxiliary positioning block (43) is located between the support blocks (203) on both sides.

2. The dual-axis hinge for use with a flexible screen according to claim 1, characterized in that: A mounting groove (202) for accommodating the equal-arm lever (40) is provided on the rear side of the body of the shaft mounting seat (20), and the mounting groove (202) is located between the upper and lower support blocks (203).

3. The dual-axis hinge for use with a flexible screen according to claim 1, characterized in that: A track groove (102) is provided on the outer side of the body of the limiting wheel (101), and a conflicting plane that conflicts with the stop plane (211) is provided at the end of the track groove (102) of the limiting wheel (101).

4. The dual-axis hinge for use with a flexible screen according to claim 1, characterized in that: The two limiting sleeves (30) are both configured as planes on one side close to the shaft mounting seat (20).

5. The dual-axis hinge for use with a flexible screen according to claim 1, characterized in that: The outer sides of the two rotating shafts (10) are both sleeved with a torque generating assembly (60), and the torque generating assembly (60) is located on the rear side of the limiting sleeve (30).

6. The dual-axis hinge for use with a flexible screen according to claim 5, characterized in that: It also includes an auxiliary support plate (50), the auxiliary support plate (50) is located between the torque generating assembly (60) and the limiting sleeve (30), and the main body of the auxiliary support plate (50) is provided with a through hole for the two rotating shafts (10) to pass through.

7. The dual-axis hinge for use with a flexible screen according to claim 1, characterized in that: The rear side of the lever body (41) is configured as an arc-shaped surface.

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