Hinge

Abstract

A hinge comprises a fixing seat, two rotating units and two side supporting plates. The fixing base is provided with two arc-shaped first channels located on the two sides of the center line. The two rotating units are located on the two sides of the center line and arranged on the fixing base, the two shells are arranged on the two rotating units respectively, and the two rotating units can be switched between the unfolding state and the folding state relatively. Each rotating unit comprises a connecting rod piece, a rail sliding piece, a rotating support and an intermediate sliding piece. The intermediate sliding piece is arranged between the track sliding piece and the rotating bracket, so that the sliding stability between the track sliding piece and the rotating bracket can be maintained on the premise that an inclined sliding rail of the track sliding piece and an inclined sliding rail of the rotating bracket do not need to be added (extended); therefore, due to the design of the rail sliding piece and the rotating support, the size of the whole hinge can be reduced, and the whole hinge has the thin characteristic.

Description

Technical Field

[0001] The present invention relates to a hinge, and in particular to a hinge used for connecting between two shells and suitable for supporting a flexible screen. Background Art

[0002] There is a hinge, which is suitable for connecting two shells so that the shells can be opened and closed relative to each other. The hinge includes a fixed seat and two rotating units. Each of the rotating units includes a connecting rod member that can be slidably arranged on the fixed seat in an arc track relative to the fixed seat, a track slider that can be slidably arranged on the connecting rod member in an arc track relative to the connecting rod member, and a rotating bracket that can be pivotally arranged on the fixed seat. The track slider and the rotating bracket are slidably connected through an oblique slide rail. However, in order to increase the sliding stability between the track slider and the rotating bracket, the track slider and the rotating bracket must maintain a certain amount of contact during the relative sliding process, and the size of the oblique slide rail needs to be lengthened. However, since the oblique slide rail increases in size in the width direction and the thickness direction and extends obliquely, the width and thickness of the track slider and the rotating bracket are relatively increased, and the entire hinge size becomes larger and thicker in the horizontal and vertical directions, resulting in the overall volume of the hinge being extremely large and difficult to reduce and unable to achieve thinness. Summary of the invention

[0003] An object of the present invention is to provide a hinge that can improve at least one problem in the prior art.

[0004] In some embodiments, the hinge of the present invention is suitable for connecting two shells so that the shells can be relatively opened and closed, and the hinge includes a fixed seat, two rotating units and two side support plates. The fixed seat has two opposite long sides and two first slots located on both sides of the center line equidistant from the two long sides and in an arc shape. The two rotating units are located on both sides of the center line and are respectively arranged on the fixed seat corresponding to the two first slots, and can be relatively switched between an expanded state and a folded state, and each of the rotating units includes a connecting rod, a track sliding member, a rotating bracket, and an intermediate sliding member. The connecting rod has a body, a first arc-shaped slide rail connected to the body and slidably arranged on the corresponding first slot, and a second arc-shaped slide rail connected to the body and extending in a direction away from the fixed seat, and the body has a bearing surface. The track sliding member is used to connect one of the shells, and has a block, a second slot formed on the block and matched with the second arc-shaped slide rail, and an outer oblique sliding portion formed on the block, and the block has a support surface for the corresponding shell to be set. The rotating bracket can be pivotally arranged on the fixed seat, and has a frame body, and an inner oblique guide portion formed on the frame body, the inner oblique guide portion has an inner oblique slider, an inner limit rail formed on the inner oblique slider, and a first guide slope formed at the end of the inner oblique slider and adjacent to the inner limit rail. The intermediate sliding member is arranged between the track sliding member and the rotating bracket, the intermediate sliding member has an inner oblique sliding portion matched with the inner oblique guide portion, and an outer oblique guiding portion matched with the outer oblique sliding portion, the inner oblique sliding portion has an inner oblique slide rail matched with the inner oblique slider, an inner limit block adjacent to the inner oblique slide rail and slidably limited in the inner limit rail, and a second guide slope formed on the inner limit block, the first guide slope of the rotating bracket is used to cooperate with the second guide slope to guide the inner limit block to enter and be limited in the inner limit rail. When the rotating unit is converted from the unfolded state to the folded state, the track sliding member slides relative to the second arc-shaped sliding rail of the connecting rod member, and slides relative to the rotating bracket through the intermediate sliding member, so as to rotate relative to the fixed seat. The two side support plates are respectively arranged on the bearing surfaces of the connecting rod members of the two rotating units and are linked to the connecting rod members.

[0005] In the expanded state, the two side support plates jointly cover the fixed seat; in the folded state, the two side support plates are opposite to each other and the distance between the two side support plates is wider on the side close to the fixed seat and narrower on the side away from the fixed seat, and the supporting surfaces of the track sliding member are parallel and opposite.

[0006] In some implementations, the inner oblique sliding portion further has a cantilever connected between the inner limit block and the inner wall surface defining the inner oblique sliding rail.

[0007] In some implementations, the outer oblique guide portion of the intermediate sliding member has an outer oblique sliding block, and the outer oblique sliding portion of the track sliding member has an outer oblique sliding rail that matches the outer oblique sliding block.

[0008] In some implementations, the inner oblique slide rail of the intermediate slide member is formed on the outer oblique slide block.

[0009] In some embodiments, the outer inclined guide portion of the intermediate sliding member also has an outer limit rail formed on the outer inclined sliding member, and the outer inclined sliding portion of the track sliding member also has an outer limit block protruding from the inner wall surface defining the outer inclined sliding rail and slidably limited to the outer limit rail.

[0010] In some implementations, the outer limit block is formed by the tail of the bolt.

[0011] In some implementations, the outer limit block is formed by the tail of a rivet.

[0012] In some embodiments, the hinge further includes a synchronization mechanism, which is connected between the rotating brackets of the rotating units. The rotating brackets of each rotating unit also have a tooth portion formed on the frame body, and the synchronization mechanism includes a plurality of gears meshing between the tooth portions of the rotating brackets.

[0013] The present invention can maintain the sliding stability between the track sliding member and the rotating bracket by means of the intermediate sliding member disposed between the track sliding member and the rotating bracket without further lengthening the inclined sliding rail (the outer inclined sliding part) of the track sliding member and the inclined sliding rail (the inner inclined guiding part) of the rotating bracket. Therefore, the design of the track sliding member and the rotating bracket can also reduce the size of the entire hinge to make the entire hinge thinner. In addition, the cooperation between the inner limit rail of the inner inclined guiding part of the rotating bracket and the inner limit block of the inner inclined sliding part of the intermediate sliding member can limit the relative position between the intermediate sliding member and the rotating bracket, thereby preventing the intermediate sliding member and the rotating bracket from being separated from each other. Furthermore, through the cooperation between the first guide bevel of the rotating bracket and the second guide bevel of the intermediate sliding member, the inner limit block can be guided to enter and be limited to the inner limit rail, so that the assembly between the inner oblique sliding part of the intermediate sliding member and the inner oblique guiding part of the rotating bracket is easier and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, in which:

[0015] Figure 1 is a three-dimensional diagram of an embodiment of a hinge of the present invention in an unfolded state;

[0016] Figure 2 yes Figure 1 A perspective exploded view of the embodiment of the invention;

[0017] Figure 3 yes Figure 1 A further exploded perspective view of the embodiment of FIG. 1 , wherein two side support plates and a central support plate are not shown;

[0018] Figure 4 is along Figure 1 A sectional view taken along the IV-IV section line;

[0019] Figure 5 is a three-dimensional diagram of a track bracket and a rotating unit therein in an unfolded state of the embodiment;

[0020] Figure 6 yes Figure 5 A three-dimensional exploded view of the track bracket and the rotating unit;

[0021] Figure 7 yes Figure 5 A cross-sectional view of the track bracket and the rotating unit;

[0022] Figure 8 is a three-dimensional diagram of the rotating unit of the embodiment in a folded state;

[0023] Fig. 9 is along Figure 8 A sectional view taken along the IX-IX section line;

[0024] Fig.10 is a three-dimensional diagram of the track bracket and the rotating unit of the embodiment in a folded state;

[0025] Fig.11 yes Fig.10 A cross-sectional view of the track bracket and the rotating unit. DETAILED DESCRIPTION

[0026] See also Figures 1 to 4 An embodiment of the hinge 100 of the present invention is suitable for connecting two housings 200 so that the two housings 200 can be relatively opened and closed, and is used to support a flexible screen 300. The hinge 100 includes a fixed seat 1, four rotating units 2, two side support plates 3, a central support plate 4, and two synchronization mechanisms 5.

[0027] The fixing base 1 includes a fixing bracket 11, a housing (not shown) disposed on the fixing bracket 11 from below, and two track brackets 12 fixed to the fixing bracket 11 from above. The fixing bracket 11 has two opposite long sides 111 and two guide structures 112. A center line C is defined between the two long sides 111, and the center line C is parallel to the two long sides 111 and equidistant from the two long sides 111. The two guide structures 112 are arranged along the center line C, and each of the guide structures 112 has an upper wall 112a defining a guide hole 112b, and a surrounding wall 112c extending downward from the periphery of the upper wall 112a, and the upper wall 112a and the surrounding wall 112c jointly define an accommodating space 112d connected to the guide hole 112b. The two track brackets 12 are arranged at intervals along the extending direction of the two long sides 111 , and each track bracket 12 is formed with two first arc-shaped grooves 121 located on both sides of the center line C.

[0028] The four rotating units 2 are paired in pairs, and each pair of the rotating units 2 is disposed on the corresponding track bracket 12 of the fixing seat 1. The following description is based on one pair of the rotating units 2 and one corresponding track bracket 12. The one pair of the rotating units 2 is located on both sides of the center line C and is correspondingly disposed on the two first grooves 121 of the corresponding track bracket 12 of the fixing seat 1, so as to be disposed on the two housings 200 respectively. Each pair of the rotating units 2 can be relatively in an unfolded state (such as Figure 1 as shown) and a folded state (as shown Figure 8 Each of the rotating units 2 includes a connecting rod 21, a track sliding member 22, a rotating bracket 23 and an intermediate sliding member 24.

[0029] See also Figure 3 and Figures 5 to 7 The connecting rod 21 has a body 211, a first arc-shaped slide rail 212 connected to the body 211 and slidably disposed in the corresponding first groove 121, and a second arc-shaped slide rail 213 connected to the body 211 and extending in a direction away from the fixing base 1. The body 211 has a bearing surface 211a.

[0030] The track sliding member 22 has a block 221, a second groove 222 formed on the block 221 and cooperating with the second arc-shaped slide rail 213 in an arc shape, and an outer oblique sliding portion 223 formed on the block 221. The block 221 has a supporting surface 221a for the corresponding housing 200 to be set. The outer oblique sliding portion 223 of the track sliding member 22 has an outer oblique slide rail 223a in a concave groove shape and inclined relative to the supporting surface 221a, and an outer limit block 223b protruding from the inner wall surface defining the outer oblique slide rail 223a. In this embodiment, the outer limit block 223b is composed of a tail portion of a rivet 25 (bolt) provided on the track sliding member 22, and the rivet 25 is inserted into the track sliding member 22 from the outside, but in other embodiments, the outer limit block 223b can also be integrally formed on the track sliding member 22.

[0031] The rotating bracket 23 is pivotally mounted on the fixed seat 1. The rotating bracket 23 has a frame body 231, an inner oblique guide portion 232 formed on the frame body 231, and a tooth portion 233 formed on the frame body 231. The frame body 231 has a pivot 231a pivotally mounted on the track bracket 12 of the fixed seat 1. The inner oblique guide portion 232 has an inner oblique slider 232a, an inner limit rail 232b formed on the inner oblique slider 232a, and a first guide slope 232c formed at the end of the inner oblique slider 232a and adjacent to the inner limit rail 232b. The pivot 231a is pivotally mounted on the fixed seat 1 so that the rotating bracket 23 can rotate around the pivot 231a as the axis.

[0032] The intermediate sliding member 24 is disposed between the track sliding member 22 and the rotating bracket 23. The intermediate sliding member 24 has an inner oblique sliding portion 241 matched with the inner oblique guiding portion 232, and an outer oblique guiding portion 242 matched with the outer oblique sliding portion 223. The inner oblique sliding portion 241 has an inner oblique sliding rail 241a matched with the inner oblique sliding block 232a, an inner limiting block 241b adjacent to the inner oblique sliding rail 241a and slidably limited in the inner limiting rail 232b, a cantilever 241c connected between the inner limiting block 241b and the inner wall surface defining the inner oblique sliding rail 241a, and a second guiding inclined surface 241d formed on the inner limiting block 241b. The first guiding inclined surface 232c of the rotating bracket 23 is used to cooperate with the second guiding inclined surface 241d to guide the inner limiting block 241b to enter and be limited to the inner limiting rail 232b.

[0033] Through the cooperation between the inner limit rail 232b of the inner oblique guide portion 232 of the rotating bracket 23 and the inner limit block 241b of the inner oblique sliding portion 241 of the intermediate sliding member 24, the relative position between the intermediate sliding member 24 and the rotating bracket 23 can be limited, so as to prevent the intermediate sliding member 24 and the rotating bracket 23 from being separated from each other. Furthermore, through the cooperation between the first guide inclined surface 232c of the rotating bracket 23 and the second guide inclined surface 241d of the intermediate sliding member 24, the inner limit block 241b can be guided to enter and be limited to the inner limit rail 232b, so that the assembly between the inner oblique sliding portion 241 of the intermediate sliding member 24 and the inner oblique guide portion 232 of the rotating bracket 23 is easier and more convenient. In addition, the elastic deformation of the cantilever 241c can also make it easier for the inner limit block 241b to enter the inner limit rail 232b during the assembly process.

[0034] The outer oblique guide portion 242 has an outer oblique slider 242a matched with the outer oblique slide rail 223a of the track slide 22, and an outer limit rail 242b formed on the outer oblique slider 242a. The outer limit block 223b of the track slide 22 can be slidably limited to the outer limit rail 242b. Through the cooperation of the outer limit block 223b of the outer oblique slide portion 223 of the track slide 22 and the outer limit rail 242b of the outer oblique guide portion 242 of the intermediate slide 24, the relative position between the track slide 22 and the intermediate slide 24 can be limited, forming a limit to prevent the track slide 22 and the intermediate slide 24 from detaching from each other. Furthermore, since the rivet 25 constituting the outer limit block 223b is inserted into the track sliding member 22 from the outside, the assembly between the outer oblique sliding portion 223 of the track sliding member 22 and the outer oblique guiding portion 242 of the intermediate sliding member 24 can be made easier and more convenient.

[0035] In addition, the inner oblique slide rail 241a of the intermediate slide member 24 is a channel structure formed on the outer oblique slide block 242a. Therefore, specifically, when the rotating unit 2 is in the unfolded state, the intermediate slide member 24 covers at least a part of the rotating bracket 23, and the track slide member 22 covers at least a part of the intermediate slide member 24 and at least a part of the rotating bracket 23 from the outside.

[0036] By means of the intermediate sliding member 24 disposed between the track sliding member 22 and the rotating bracket 23, the sliding stability between the track sliding member 22 and the rotating bracket 23 can be maintained without lengthening the inclined sliding rail (the outer inclined sliding portion 223) of the track sliding member 22 and the inclined sliding rail (the inner inclined guide portion 232) of the rotating bracket 23.

[0037] When the rotating unit 2 is converted from the unfolded state to the folded state, the track sliding member 22 slides relative to the second arc-shaped sliding rail 213 of the connecting rod 21 and slides relative to the rotating bracket 23 through the intermediate sliding member 24 to rotate relative to the fixing base 1 .

[0038] Refer back Figures 1 to 4 The two side support plates 3 are respectively disposed on the bearing surfaces 211a of the connecting rods 21 of the corresponding groups of rotating units 2 and are linked with the connecting rods 21 of the corresponding groups of rotating units 2. In this embodiment, the two side support plates 3 are simultaneously disposed on the two groups of rotating units 2. Each of the side support plates 3 has a first plate body 31, an avoidance recess 32 formed on an inner side edge 311 of the first plate body 31, and a plurality of lifting columns 33 extending from the first plate body 31 toward the avoidance recess 32.

[0039] The central support plate 4 is movably disposed on the fixing seat 1. The central support plate 4 has a second plate body 41, and two guide posts 42 connected to the second plate body 41 and respectively slidably penetrated in the guide holes 112b of the two guide structures 112. Each of the guide posts 42 is downwardly and slidably penetrated in the guide holes 112b of the corresponding guide structures 112, and is provided with a fixing member (not shown) in the form of a screw lock, for example. A spring member (not shown) is sandwiched between the head of the fixing member and the upper wall 112a of the guide structure 112, and the spring member is used to push the head of the fixing member downward to drive the central support plate 4 to move downward relative to the fixing bracket 11.

[0040] See also Figure 2 , Figure 4 , Figure 5 and Figure 7, when the rotating unit 2 is in the unfolded state, the inner edges 311 of the two side support plates 3 are adjacent to each other, and the central support plate 4 is located at a filling position to fill the avoidance recess 32 of the two side support plates 3, and the two side support plates 3 and the central support plate 4 jointly cover the fixing seat 1. In addition, in this state, the support surface 221a of the track sliding member 22 is parallel to the bearing surface 211a of the connecting rod 21, and the two shells 200 provided on the support surface 221a of the track sliding member 22 and the two side support plates 3 provided on the bearing surface 211a of the connecting rod 21 also support the flexible screen 300 at the same height. Moreover, when the rotating unit 2 is in the unfolded state, the lifting columns 33 of the two side support plates 3 support the central support plate 4 upward, and the height of the central support plate 4 is maintained to be the same as that of the two side support plates 3, so that the central support plate 4 can cooperate to support the flexible screen 300.

[0041] See also Figures 8 to 11 In the folded state, the side support plates 3 of the rotating unit 2 are opposite to each other and the distance between the two side support plates 3 is wider at each inner edge 311 (the side close to the fixed seat 1), and the distance between the two side support plates 3 is narrower at the side away from each inner edge 311 (the side away from the fixed seat 1), and the central support plate 4 is located at a biased position relatively biased toward the fixed seat 1. The avoidance recesses 32 at the inner edges 311 of the two side support plates 3 can avoid the flexible circuit board (not shown) or other components (not shown) arranged between the two shells 200 in this state, so as to prevent the flexible circuit board or other components from being pulled and damaged. In addition, in the folded state, the support surfaces 221a of the track sliding member 22 of the rotating unit 2 are parallel to each other. In detail, the side support plates 3 move together with the connecting rod 21, and the plate surfaces of the side support plates 3 are respectively parallel to the bearing surfaces 211a of the connecting rod 21 connected thereto.

[0042] In detail, during the process of each rotating unit 2 being converted from the unfolded state to the folded state, the first arc-shaped slide rail 212 of the connecting rod member 21 slides along the corresponding first groove 121. When the rotating unit 2 is in the folded state, the distance between the bearing surfaces 211a of the connecting rod member 21 is wider on the side close to the fixed seat 1 and narrower on the side away from the fixed seat 1, so that the distance between the bearing surfaces 211a is narrow at the top and wide at the bottom, and the distance between the two side support plates 3 is also narrow at the top and wide at the bottom, so the distance between the two side support plates 3 is relatively wide at each inner edge 311. In addition, the central support plate 4 that has lost the support of the lifting column 33 of the two side support plates 3 is driven by the spring member to move downward to the biased position biased toward the fixed seat 1. The space between the two side support plates 3 and the central support plate 4 can accommodate the bend of the flexible screen 300 that is roughly in the shape of a water drop. It should be noted that, during the process of switching from the folded state to the unfolded state, the central support plate 4 is moved from the biased position by the lifting columns 33 (see FIG. Figure 4 ) is lifted upward to the filling position, after which the central support plate 4 is supported by the lifting columns 33 to maintain it in the filling position.

[0043] See also Figure 3 , Figure 8 and Fig. 9 In the process of each rotating unit 2 being transformed from the unfolded state to the folded state, the track sliding member 22 slides relative to the second arc-shaped slide rail 213, and slides relative to the rotating bracket 23 through the intermediate sliding member 24, so as to rotate relative to the fixed seat 1. Through the coordination of the arc-shaped sliding and the oblique sliding of the track sliding member 22, when the rotating unit 2 is in the folded state, the support surface 221a of the track sliding member 22 can be parallel to the support surface 221a of another track sliding member 22, so that the housing 200 is parallel and stacked.

[0044] See also Figure 2 and Figure 3 In this embodiment, the two synchronization mechanisms 5 are respectively arranged on the two track brackets 12 of the fixed seat 1 and respectively correspond to the groups of the rotating units 2, and each synchronization mechanism 5 is connected between the rotating brackets 23 of a corresponding group of the rotating units 2. The synchronization mechanism 5 includes a plurality of gears 51 (specifically an even number of gears 51) meshed between the teeth 233 of the rotating brackets 23, and a torque unit 52 connected to two of the gears 51. The two synchronization mechanisms 5 enable the rotating units 2 to rotate synchronously and provide torque.

[0045] In summary, the present invention can maintain the sliding stability between the track sliding member 22 and the rotating bracket 23 by means of the intermediate sliding member 24 disposed between the track sliding member 22 and the rotating bracket 23 without further lengthening the inclined sliding rail (the outer inclined sliding portion 223) of the track sliding member 22 and the inclined sliding rail (the inner inclined guide portion 232) of the rotating bracket 23. Therefore, the design of the track sliding member 22 and the rotating bracket 23 can also reduce the size of the entire hinge 100 to make it thinner as a whole. In addition, by means of the cooperation between the inner limit rail 232b of the inner inclined guide portion 232 of the rotating bracket 23 and the inner limit block 241b of the inner inclined sliding portion 241 of the intermediate sliding member 24, the relative position between the intermediate sliding member 24 and the rotating bracket 23 can be limited to prevent the intermediate sliding member 24 and the rotating bracket 23 from being separated from each other. Furthermore, through the cooperation between the first guide bevel 232c of the rotating bracket 23 and the second guide bevel 241d of the intermediate sliding member 24, the inner limit block 241b can be guided to enter and be limited to the inner limit rail 232b, so that the assembly between the inner oblique sliding part 241 of the intermediate sliding member 24 and the inner oblique guide part 232 of the rotating bracket 23 is easier and more convenient.

[0046] The above are merely embodiments of the present invention and should not be used to limit the scope of the present invention. That is, any simple equivalent changes and modifications made according to the claims and description of the present invention still fall within the scope of the present invention.

Claims

1. A hinge, suitable for connecting two housings so that the housings can be opened and closed relative to each other, characterized in that: The hinge comprises: A fixing seat having two opposite long sides and two first arc-shaped grooves located on both sides of a center line equidistant from the two long sides; and Two rotating units are located on both sides of the center line and are respectively arranged on the fixing seat corresponding to the two first grooves, and can be relatively switched between an unfolded state and a folded state. Each of the rotating units includes The connecting rod comprises a body, a first arc-shaped slide rail connected to the body and slidably arranged in the corresponding first groove, and a second arc-shaped slide rail connected to the body and extending in a direction away from the fixing seat, wherein the body has a bearing surface. A track slide is used to connect one of the shells, and comprises a block, a second arc-shaped groove formed on the block and cooperating with the second arc-shaped slide rail, and an outer oblique sliding portion formed on the block, wherein the block has a supporting surface for the corresponding shell to be arranged. A rotating bracket is pivotally mounted on the fixing seat and has a frame body, and an inner oblique guide portion formed on the frame, the inner oblique guide portion having an inner oblique slider, an inner limit rail formed on the inner oblique slider, and a first guide slope formed at the end of the inner oblique slider and adjacent to the inner limit rail, and An intermediate sliding member is arranged between the track sliding member and the rotating bracket, the intermediate sliding member has an inner oblique sliding portion matched with the inner oblique guiding portion, and an outer oblique guiding portion matched with the outer oblique sliding portion, the inner oblique sliding portion has an inner oblique sliding rail matched with the inner oblique sliding block, an inner limiting block adjacent to the inner oblique sliding rail and slidably limited in the inner limiting rail, and a second guiding inclined surface formed on the inner limiting block, the first guiding inclined surface of the rotating bracket is used to cooperate with the second guiding inclined surface to guide the inner limiting block to enter and be limited in the inner limiting rail, When the rotating unit is converted from the unfolded state to the folded state, the track sliding member slides relative to the second arc-shaped sliding rail of the connecting rod member, and slides relative to the rotating bracket through the intermediate sliding member, so as to rotate relative to the fixing seat; and Two side support plates are respectively arranged on the bearing surfaces of the connecting rods of the two rotating units and are linked to the connecting rods. In the expanded state, the two side support plates jointly cover the fixed seat; in the folded state, the two side support plates are opposite to each other and the distance between the two side support plates is wider on the side close to the fixed seat and narrower on the side away from the fixed seat, and the supporting surfaces of the track sliding member are parallel and opposite.

2. The hinge according to claim 1, characterized in that: The inner oblique sliding portion also has a cantilever connected between the inner limit block and the inner wall surface defining the inner oblique sliding rail.

3. The hinge according to claim 1, characterized in that: The outer oblique guide portion of the intermediate sliding member has an outer oblique sliding block, and the outer oblique sliding portion of the track sliding member has an outer oblique sliding rail matched with the outer oblique sliding block.

4. The hinge according to claim 3, characterized in that: The inner oblique slide rail of the intermediate slide member is formed on the outer oblique slide block.

5. The hinge according to claim 3, characterized in that: The outer oblique guide portion of the intermediate sliding member also has an outer limit rail formed on the outer oblique sliding block, and the outer oblique sliding portion of the track sliding member also has an outer limit block protruding from the inner wall surface defining the outer oblique sliding rail and slidably limited to the outer limit rail.

6. The hinge according to claim 5, characterized in that: The outer limit block is formed by the tail of the bolt.

7. The hinge according to claim 5, characterized in that: The outer limit block is formed by the tail of the rivet.

8. The hinge according to claim 1, characterized in that: The hinge further includes a synchronization mechanism, which is connected between the rotating brackets of the rotating units. The rotating brackets of each rotating unit also have a tooth portion formed on the frame body. The synchronization mechanism includes a plurality of gears meshed between the tooth portions of the rotating brackets.

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