Hinge structure of folding screen

Abstract

The utility model discloses a hinge structure of a folding screen. The hinge structure comprises a fixing block, a shaft rod, a gear plate, a track sliding rod, a supporting rod, a middle frame and a connecting rod. The shaft rod is rotatably installed on the fixing block, the cross section of the shaft rod is non-circular, and the cross section is perpendicular to the axial direction of the shaft rod; a mounting hole matched with the shaft rod is formed in the gear plate, and the gear plate is arranged on the shaft rod in a sleeving mode through the mounting hole; the track sliding rod is arranged on the shaft rod in a sleeving mode, the track sliding rod can rotate relative to the shaft rod and can slide in the axial direction of the shaft rod, a spiral sliding groove is formed in the track sliding rod, and a clamping block matched with the sliding groove in a sliding mode is arranged on the fixing block; the supporting rod is fixedly connected with the gear plate; the middle frame is arranged on the supporting rod in a sleeving mode and can slide relative to the supporting rod in the direction perpendicular to the axial direction of the shaft rod. The track sliding rod, the connecting rod and the middle frame form a double-sliding-block mechanism, when the gear plate rotates relative to the fixing block, the middle frame is driven to slide relative to the supporting rod so as to be close to or away from the fixing block, and therefore the effect of driving the middle frame to run is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, and in particular to a folding screen hinge structure. Background Art

[0002] Currently, foldable devices (such as foldable phones and tablets) often require hinge components. When folded, the middle frame is closer to the folding axis, but when unfolded, the distance between the middle frame and the folding axis is farther. Therefore, the hinge components need to push the middle frame to move the screen during the folding and unfolding process to achieve distance compensation. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a folding screen hinge structure that can push the middle frame to move the screen.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a folding screen hinge structure, comprising:

[0005] Fixed block;

[0006] a shaft, the shaft being rotatably mounted on the fixed block, the cross section of the shaft being non-circular;

[0007] A gear plate, wherein a mounting hole is provided on the gear plate to match the shaft, and the gear plate is sleeved on the shaft through the mounting hole;

[0008] A track slide rod, the track slide rod is sleeved on the shaft rod, the track slide rod is rotatable relative to the shaft rod and slidable along the axial direction of the shaft rod, the track slide rod is provided with a spiral slide groove, and the fixed block is provided with a clamping block that slides with the slide groove;

[0009] a support rod, the support rod being fixedly connected to the gear plate;

[0010] a middle frame, the middle frame being sleeved on the support rod and being slidable relative to the support rod in a direction perpendicular to the axial direction of the shaft;

[0011] A connecting rod, one end of which is rotatably connected to the track slide bar, and the other end of which is rotatably connected to the middle frame.

[0012] Furthermore, there are multiple slide grooves, and the clamping blocks are arranged in a one-to-one correspondence with the slide grooves.

[0013] Furthermore, it also includes an extension rod, which is fixedly mounted on the middle frame and rotatably connected to the connecting rod.

[0014] Furthermore, the extension rod is provided with a plurality of connection blocks, and the middle frame is provided with connection holes that cooperate with the connection parts.

[0015] Furthermore, there are two shafts, and the shafts, track slides, support rods, middle frames and connecting rods are arranged in a one-to-one correspondence. The gear plates are provided on both shafts, and the gear plates respectively provided on the two shafts are engaged with each other.

[0016] Furthermore, it also includes a sliding plate and an elastic member, the sliding plate is sleeved on the two shafts, the elastic member is used to drive the sliding plate to move toward the direction close to the gear plate, the gear plate is provided with a concave-convex structure, and the sliding plate is provided with a matching structure that matches the concave-convex structure.

[0017] Furthermore, the elastic member is sleeved on the shaft, one end of the elastic member abuts against the fixed block, and the other end of the elastic member abuts against a side of the sliding plate away from the gear plate.

[0018] Furthermore, the elastic member is a spring, a spring sheet and a spring washer.

[0019] Furthermore, the track slide bar is provided with a protrusion, and the support bar is provided with a limiting portion corresponding to the protrusion.

[0020] Furthermore, a detachable retaining ring is provided at the end of the shaft.

[0021] The beneficial effect of the present invention is that when the gear plate and the middle frame in the hinge structure of the folding screen rotate relative to the fixed block, the track slide bar will slide along the axial direction of the shaft rod under the action of the slide groove and the card block, and the track slide bar drives the middle frame to slide relative to the support rod to approach or move away from the fixed block through the connecting rod, thereby achieving the effect of driving the middle frame to run the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure of the folding screen hinge structure of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of the folding screen hinge structure of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 This is a partial structural diagram of the hinge structure of the folding screen of the first embodiment of the present invention (the middle frame is hidden);

[0025] Figure 4 This is an exploded view of the folding screen hinge structure of Example 1 of the present invention;

[0026] Figure 5This is a schematic structural diagram of a fixed block in the hinge structure of a folding screen according to the first embodiment of the present invention;

[0027] Figure 6 This is a structural diagram of the track slide bar in the folding screen hinge structure of the first embodiment of the present utility model;

[0028] Figure 7 This is a schematic structural diagram of the gear plate in the folding screen hinge structure of Example 1 of the present utility model;

[0029] Figure 8 This is a structural schematic diagram of the sliding plate in the folding screen hinge structure of Example 1 of the present utility model.

[0030] Description of labels:

[0031] 1. Fixed block; 11. Card block;

[0032] 2. Shaft; 21. Circlip;

[0033] 3. Gear plate; 31. Concave-convex structure;

[0034] 4. Track slide bar; 41. Slide groove; 42. Bump;

[0035] 5. Support rod; 51. Limiting part;

[0036] 6. Middle frame; 61. Extension rod; 611. Connecting block; 62. Connecting hole;

[0037] 7. Connecting rod;

[0038] 8. Sliding plate; 81. Matching structure;

[0039] 9. Elastic parts. DETAILED DESCRIPTION

[0040] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0041] Please refer to Figures 1 to 8 , a folding screen hinge structure, comprising:

[0042] Fixed block 1;

[0043] A shaft 2, the shaft 2 being rotatably mounted on the fixed block 1, and the cross section of the shaft 2 being non-circular;

[0044] A gear plate 3, wherein a mounting hole is provided on the gear plate 3 to match the shaft 2, and the gear plate 3 is sleeved on the shaft 2 through the mounting hole;

[0045] A track slide 4 is sleeved on the shaft 2. The track slide 4 is rotatable relative to the shaft 2 and slidable along the axial direction of the shaft 2. The track slide 4 is provided with a spiral groove 41. The fixed block 1 is provided with a clamping block 11 that slides with the groove 41.

[0046] A support rod 5, wherein the support rod 5 is fixedly connected to the gear plate 3;

[0047] a middle frame 6, the middle frame 6 being sleeved on the support rod 5 and slidable relative to the support rod 5 in a direction perpendicular to the axial direction of the shaft 2;

[0048] A connecting rod 7 , one end of which is rotatably connected to the track slide bar 4 , and the other end of which is rotatably connected to the middle frame 6 .

[0049] From the above description, it can be seen that the beneficial effect of the present invention is that when the gear plate 3 and the middle frame 6 in the hinge structure of the folding screen rotate relative to the fixed block 1, the track slide bar 4 will slide along the axial direction of the shaft 2 under the action of the slide groove 41 and the block 11, and the track slide bar 4 drives the middle frame 6 to slide relative to the support rod 5 through the connecting rod 7 to approach or move away from the fixed block 1, thereby achieving the effect of driving the middle frame 6 to run the screen.

[0050] Furthermore, there are multiple sliding grooves 41 , and the clamping blocks 11 are arranged in a one-to-one correspondence with the sliding grooves 41 .

[0051] It can be seen from the above description that the cooperation between the multiple blocks 11 and the sliding grooves 41 can drive the track slide bar 4 to slide along the shaft rod 2 more smoothly.

[0052] Furthermore, it also includes an extension rod 61 , which is fixedly mounted on the middle frame 6 , and the extension rod 61 is rotatably connected to the connecting rod 7 .

[0053] As can be seen from the above description, providing the extension rod 61 can shorten the length of the connecting rod 7 and reduce the range of motion of the movable connecting rod 7 .

[0054] Furthermore, the extension rod 61 is provided with a plurality of connection blocks 611 , and the middle frame 6 is provided with connection holes 62 that cooperate with the connection parts.

[0055] As can be seen from the above description, the multiple connecting blocks 611 can increase the fulcrum points, which is helpful to prevent the middle frame 6 from being deflected and causing obstruction when sliding.

[0056] Furthermore, the number of the shaft rods 2 is two, and the shaft rods 2, track slide rod 4, support rod 5, middle frame 6 and connecting rod 7 are arranged in a one-to-one correspondence. The gear plates 3 are provided on the two shaft rods 2, and the gear plates 3 respectively provided on the two shaft rods 2 are engaged with each other.

[0057] It can be seen from the above description that the two gear plates 3 can move synchronously to cause the two middle frames 6 to fold or unfold.

[0058] Furthermore, it also includes a sliding plate 8 and an elastic member 9, the sliding plate 8 is sleeved on the two shafts 2, the elastic member 9 is used to drive the sliding plate 8 to move toward the direction close to the gear plate 3, the gear plate 3 is provided with a concave-convex structure 31, and the sliding plate 8 is provided with a matching structure 81 that matches the concave-convex structure 31.

[0059] As can be seen from the above description, the first elastic member 9, the matching structure 81 and the concave-convex structure 31 cause the gear plate 3 to be subjected to resistance when rotating relative to the fixed block 1, which helps to prevent the hinge structure from accidentally unfolding or folding.

[0060] Furthermore, the elastic member 9 is sleeved on the shaft 2 , one end of the elastic member 9 abuts against the fixed block 1 , and the other end of the elastic member 9 abuts against a side of the sliding plate 8 away from the gear plate 3 .

[0061] As can be seen from the above description, sleeve-mounting the elastic member 9 on the shaft 2 can limit the position of the elastic member 9 and improve space utilization.

[0062] Furthermore, the elastic member 9 is a spring, a spring sheet and a spring washer.

[0063] As can be seen from the above description, the type of the elastic member 9 can be selected according to actual use requirements or production conditions.

[0064] Furthermore, a protrusion 42 is provided on the track slide bar 4 , and a limiting portion 51 is provided on the support bar 5 corresponding to the protrusion 42 .

[0065] As can be seen from the above description, the interference between the limiting portion 51 and the protrusion 42 can limit the extreme position of the track slider 4, thereby preventing the middle frame 6 from rotating beyond the stroke angle and causing damage to the folding screen of the electronic device.

[0066] Furthermore, a detachable retaining ring 21 is provided at the end of the shaft 2 .

[0067] As can be seen from the above description, the retaining spring 21 can limit the positions of the shaft 2, the fixing block 1, the gear plate 3 and the track slide bar 4, and is convenient for assembly and disassembly.

[0068] Please refer to Figures 1 to 8 , embodiment 1 of the present invention is: a folding screen hinge structure, applied to a folding terminal device.

[0069] The folding screen hinge structure includes a fixed block 1, a shaft rod 2, a gear plate 3, a track slide rod 4, a support rod 5, a middle frame 6 and a connecting rod 7; the shaft rod 2 is rotatably mounted on the fixed block 1, the cross section of the shaft rod 2 is non-circular, and the cross section is perpendicular to the axial direction of the shaft rod 2; the gear plate 3 is provided with a mounting hole that cooperates with the shaft rod 2, and the gear plate 3 is sleeved on the shaft rod 2 through the mounting hole; the track slide rod 4 is sleeved on the shaft rod 2, the track slide rod 4 is rotatable relative to the shaft rod 2 and can slide along the axial direction of the shaft rod 2; the track slide rod 4 is provided with a spiral slide groove 41, and the fixed block 1 is provided with a card block 11 that slides with the slide groove 41; the support rod 5 is fixedly connected to the gear plate 3; the middle frame 6 is sleeved on the support rod 5, and the middle frame 6 can slide relative to the support rod 5 in a direction perpendicular to the axial direction of the shaft rod 2; one end of the connecting rod 7 is rotatably connected to the track slide rod 4, and the other end of the connecting rod 7 is rotatably connected to the middle frame 6.

[0070] In this embodiment, there are two shafts 2. The shafts 2, track sliders 4, support rods 5, middle frames 6, and connecting rods 7 are arranged in a one-to-one correspondence. Each shaft 2 is equipped with a gear plate 3, which meshes with each other. The two shafts 2, two track sliders 4, two support rods 5, two middle frames 6, and two connecting rods 7 are arranged symmetrically. Each shaft 2 is equipped with two gear plates 3, with the fixed block 1 and track slider 4 positioned between the two gear plates 3. The support rods 5 are connected to the gear plates 3 via screws. When the two gear plates 3 and the middle frame 6 are folded in half, the track slide bar 4 rotates relative to the fixed block 1, and the block 11 contacts the side wall of the spiral slide groove 41, thereby applying a force parallel to the axial direction of the shaft rod 2 on the track slide bar 4. The track slide bar 4 moves along the axial direction of the shaft rod 2 under the push of the block 11. Since the track slide bar 4, the connecting rod 7 and the middle frame 6 form a double slider mechanism, the track slide bar 4 drives the middle frame 6 to slide relative to the support rod 5 toward the fixed block 1 through the connecting rod 7 during the sliding process, thereby achieving the effect of the middle frame 6 running on the screen; when the two gear plates 3 and the middle frame 6 are unfolded, the middle frame 6 slides relative to the support rod 5 toward the direction away from the fixed block 1.

[0071] There are multiple chutes 41, and the blocks 11 are arranged in a one-to-one correspondence with the chutes 41. Figure 6 As shown, in this embodiment, each track slide bar 4 is provided with two slide grooves 41 .

[0072] like Figures 2 to 4As shown, the folding screen hinge structure also includes an extension rod 61, which is fixedly mounted on the middle frame 6, and the extension rod 61 is rotatably connected to the connecting rod 7. A plurality of connecting blocks 611 are provided on the extension rod 61, and a connecting hole 62 that cooperates with the connecting portion is provided on the middle frame 6, and the connecting hole 62 is arranged in a one-to-one correspondence with the connecting block 611. Specifically, the extension rod 61 includes a plurality of connected rod portions, and the plurality of rod portions have one end connected to one place to form a common end, and the common end is rotatably connected to the connecting rod 7, and a connection block 611 is provided at one end of the plurality of rod portions away from the common end. In this embodiment, the extension rod 61 is provided with two rod portions. In other embodiments, it is also feasible for the extension rod 61 to be provided with three or more rod portions. It is easy to understand that the plurality of connecting blocks 611 can increase the fulcrum, which is conducive to preventing the middle frame 6 from deflecting during sliding and causing blocking.

[0073] like Figure 1 、 Figure 7 and Figure 8 As shown, the folding screen hinge structure also includes a sliding plate 8 and an elastic member 9. The sliding plate 8 is provided with two circular through-holes. The sliding plate 8 is mounted on the two shafts 2 through the two circular through-holes. The elastic member 9 is used to drive the sliding plate 8 to move toward the gear plate 3. The gear plate 3 is provided with a concave-convex structure 31, and the sliding plate 8 is provided with a matching structure 81 that matches the concave-convex structure 31. The concave-convex structure 31 is composed of a plurality of latch teeth uniformly distributed axially around the shaft 2, and the matching structure 81 is composed of a plurality of latch teeth uniformly distributed axially around the circular through-holes of the sliding plate 8.

[0074] Alternatively, the elastic member 9 is a spring, a spring sheet, or a spring washer. In this embodiment, the elastic member 9 is a spring, which is sleeved on the shaft 2, with one end of the elastic member 9 abutting against the fixed block 1, and the other end of the elastic member 9 abutting against the side of the sliding plate 8 away from the gear plate 3.

[0075] like Figure 1 and Figure 4 As shown, a protrusion 42 is provided on the track slide bar 4, and a limit portion 51 is provided on the support rod 5 corresponding to the protrusion 42. When the protrusion 42 is against the limit portion 51, the hinge structure of the folding screen is in an unfolded state, and the two middle frames 6 are flush.

[0076] like Figures 1 to 3 As shown, a detachable retaining spring 21 is provided at the end of the shaft 2, and the retaining spring 21 is used to restrict the fixing block 1, the gear plate 3 and the track slide bar 4 on the shaft 2. A gasket is also provided between the retaining spring 21 and the gear plate 3.

[0077] To sum up, when the gear plate and the middle frame in the folding screen hinge structure provided by the present invention rotate relative to the fixed block, the track slide bar will slide along the axial direction of the shaft rod under the action of the slide groove and the block, and the track slide bar drives the middle frame to slide relative to the support rod through the connecting rod to approach or move away from the fixed block, thereby achieving the effect of driving the middle frame to run the screen.

[0078] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A folding screen hinge structure, characterized in that: include: Fixed block; a shaft, the shaft being rotatably mounted on the fixed block, the cross section of the shaft being non-circular; A gear plate, wherein a mounting hole is provided on the gear plate to match the shaft, and the gear plate is sleeved on the shaft through the mounting hole; A track slide rod, the track slide rod is sleeved on the shaft rod, the track slide rod is rotatable relative to the shaft rod and slidable along the axial direction of the shaft rod, the track slide rod is provided with a spiral slide groove, and the fixed block is provided with a clamping block that slides with the slide groove; a support rod, the support rod being fixedly connected to the gear plate; a middle frame, the middle frame being sleeved on the support rod and being slidable relative to the support rod in a direction perpendicular to the axial direction of the shaft; A connecting rod, one end of which is rotatably connected to the track slide bar, and the other end of which is rotatably connected to the middle frame.

2. The folding screen hinge structure according to claim 1, characterized in that: There are multiple slide grooves, and the clamping blocks are arranged in a one-to-one correspondence with the slide grooves.

3. The folding screen hinge structure according to claim 1, characterized in that: It also includes an extension rod, which is fixedly mounted on the middle frame and rotatably connected to the connecting rod.

4. The folding screen hinge structure according to claim 3, characterized in that: The extension rod is provided with a plurality of connection blocks, and the middle frame is provided with connection holes matched with the connection blocks.

5. The folding screen hinge structure according to claim 1, characterized in that: There are two shafts, and the shafts, track slides, support rods, middle frames and connecting rods are arranged in one-to-one correspondence. The gear plates are provided on both shafts, and the gear plates respectively provided on the two shafts are engaged with each other.

6. The folding screen hinge structure according to claim 5, characterized in that: It also includes a sliding plate and an elastic member, the sliding plate is sleeved on the two shafts, the elastic member is used to drive the sliding plate to move toward the direction close to the gear plate, the gear plate is provided with a concave-convex structure, and the sliding plate is provided with a matching structure that matches the concave-convex structure.

7. The folding screen hinge structure according to claim 6, characterized in that: The elastic member is sleeved on the shaft, one end of the elastic member abuts against the fixing block, and the other end of the elastic member abuts against a side of the sliding plate away from the gear plate.

8. The folding screen hinge structure according to claim 6, characterized in that: The elastic member is a spring, a spring sheet and an elastic washer.

9. The folding screen hinge structure according to claim 1, characterized in that: The track slide bar is provided with a protrusion, and the support bar is provided with a limiting portion corresponding to the protrusion.

10. The folding screen hinge structure according to claim 1, characterized in that: The end of the shaft is provided with a detachable clamping spring.

Images