Folding display terminal hinge structure and folding display terminal

Abstract

The utility model relates to the technical field of hinges, and discloses a hinge structure of a folding display terminal and the folding display terminal. The connecting arms are arranged on the two sides of the hinge support, and clamping holes are formed in the thickness directions of the connecting arms in a penetrating mode; the door plate mechanisms are correspondingly connected with the connecting arms in a sliding mode, and clamping columns are arranged at the ends, away from the terminal display screen, of the door plate mechanisms; wherein in the process that the terminal is folded to a completely folded state, each door plate mechanism and the corresponding connecting arm do relative sliding motion to enable the clamping column to extend into the clamping hole until the clamping column is clamped, so that the connecting arms on the two sides are limited to continue to do relative motion, and further sliding of the connecting arms and the door plate mechanisms is limited through clamping of the clamping columns and the clamping holes; the door plate mechanism is prevented from being separated from the connecting arm, the technical problems that in the prior art, the lap joint amount is small during folding, and a hinge is prone to derailing are solved, and the technical effects that the door plate mechanism and the connecting arm are not separated, and connection is firm are achieved.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a hinge structure for a foldable display terminal and a foldable display terminal. Background Technology

[0002] With the development of technology, people have come up with foldable display terminals to provide a larger display area and improve the viewing experience while being more portable. When unfolded, foldable display terminals offer a larger display area, enhancing the viewing experience, while when folded, they are more compact and easier to carry.

[0003] Foldable display terminals are generally folded along the center line when folded. To make them even smaller and lighter, the thickness of foldable display terminals is getting thinner and thinner. In order to have better standby time, the width of the battery is getting wider and wider. As a result, the width of the hinge track is getting narrower and narrower. That is, the overlap between the track rod and the track cover in the folded state is getting less and less, which makes it very easy for the hinge to derail and become unusable. Utility Model Content

[0004] The purpose of this utility model is to provide a hinge structure for a foldable display terminal and a foldable display terminal, so as to solve the technical problem in the prior art that the overlap is small when folding and the hinge is prone to derailment.

[0005] To solve the above-mentioned technical problems, this utility model provides a hinge structure for a foldable display terminal, comprising:

[0006] Hinge bracket;

[0007] Connecting arms are provided on both sides of the hinge bracket, and snap-fit ​​holes are provided through the thickness direction of the connecting arms.

[0008] A door panel mechanism is slidably connected to each of the connecting arms, and a snap-fit ​​post is provided at the end of the door panel mechanism facing away from the terminal display screen.

[0009] During the process of folding the terminal to a fully folded state, each door panel mechanism and the corresponding connecting arm slide relative to each other, causing the locking pin to extend into the locking hole until it locks in place, thereby restricting the connecting arms on both sides from continuing to move relative to each other.

[0010] In an optional embodiment, a sloping groove is provided on the side of the snap-fit ​​hole near the hinge bracket. The sloping groove extends obliquely to the snap-fit ​​hole in a direction away from the hinge bracket. The snap-fit ​​post slides along the sloping direction of the sloping groove until it snaps into the snap-fit ​​hole as the two connecting arms move closer together.

[0011] In an optional embodiment, the door panel mechanism includes a door panel body and a middle frame fixing block;

[0012] The door panel body is connected to the middle frame fixing block, and a sliding groove is provided in the middle frame fixing block. The connecting arm extends into the sliding groove and is slidably connected to the middle frame fixing block.

[0013] The door panel body is provided with the snap-fit ​​post at the end opposite to the terminal display screen;

[0014] The middle frame fixing block is used to connect the middle frame of the terminal.

[0015] In an optional implementation, it further includes:

[0016] The virtual swing arms are arranged on both sides of the hinge bracket, and the end of the virtual swing arm away from the terminal display screen is hinged to the middle frame fixing block.

[0017] When the virtual swing arms on both sides move toward each other, the virtual swing arms drive the connecting arm to slide relative to the middle frame fixing block.

[0018] In an optional embodiment, the hinge bracket includes an arc-shaped track, and the virtual swing arm has an arc surface and is slidably connected to the arc-shaped track.

[0019] The arc-shaped track is fixed to the hinge bracket by rivets.

[0020] In an optional embodiment, the hinge bracket is provided with a fixed cam block and a movable cam block, the fixed cam block and the movable cam block being respectively drivenly connected to both sides of the connecting arm;

[0021] When the connecting arm rotates, it pushes the movable cam block to move along the length direction of the hinge bracket.

[0022] In an optional embodiment, the cam teeth on both sides of the connecting arm mesh with the cam teeth on the fixed cam block and the movable cam block, respectively.

[0023] In an optional embodiment, the fixed cam block is provided with a through hole, and the fixed cam block is limited to the hinge bracket by a screw passing through the through hole. The diameter of the through hole is larger than the diameter of the screw thread but smaller than the diameter of the screw nut.

[0024] In an optional embodiment, an elastic element is also included, one end of which abuts against the hinge bracket and the other side of which abuts against the movable cam block. When the connecting arm rotates, it pushes the movable cam block to move, thereby squeezing the elastic element to generate a damping force.

[0025] This utility model also provides a foldable display terminal, including the hinge structure of the foldable display terminal.

[0026] This utility model provides a hinge structure for a folding display terminal, comprising: a hinge bracket; connecting arms disposed on both sides of the hinge bracket, with locking holes extending through the thickness direction of the connecting arms; and a door panel mechanism slidably connected to each connecting arm, with a locking post at the end of the door panel mechanism facing away from the terminal display screen. During the process of folding the terminal to a fully folded state, each door panel mechanism and its corresponding connecting arm slide relative to each other, causing the locking post to extend into the locking hole until it engages, thereby restricting the connecting arms on both sides from continuing to move relative to each other. Through the engagement of the locking post and the locking hole, further sliding of the connecting arm and the door panel mechanism is restricted, preventing the door panel mechanism from separating from the connecting arm. This solves the technical problem in the prior art where the overlap is small during folding, making the hinge prone to derailment, and achieves the technical effect of preventing the door panel mechanism from separating from the connecting arm and ensuring a firm connection. Attached Figure Description

[0027] Figure 1 This is a top view of the hinge structure of the folding display terminal mentioned in the embodiments of this utility model;

[0028] Figure 2 This is an exploded view of the hinge structure of the folding display terminal mentioned in the embodiments of this utility model;

[0029] Figure 3 This is another exploded view of the hinge structure of the folding display terminal mentioned in the embodiments of this utility model;

[0030] Figure 4 This is a schematic diagram of the door panel mechanism mentioned in the embodiments of this utility model;

[0031] Figure 5 This is a cross-sectional view of the hinge structure of the folding display terminal mentioned in the embodiments of this utility model;

[0032] Figure 6 This is another cross-sectional view of the hinge structure of the folding display terminal mentioned in the embodiments of this utility model;

[0033] Figure 7 This is a schematic diagram of the connecting arm mentioned in the embodiments of this utility model.

[0034] In the diagram, 1-hinge bracket; 2-connecting arm; 3-snap hole; 4-door panel mechanism; 401-snap post; 402-door panel body; 403-middle frame fixing block; 404-sliding groove; 5-virtual swing arm; 6-fixed cam block; 7-movable cam block; 8-elastic element. Detailed Implementation

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In related technologies, foldable display terminals are generally folded along the center line when folded. To make them more compact and lightweight, the thickness of foldable display terminals is getting thinner and thinner. In order to have better standby time, the width of the battery is getting larger and larger. As a result, the width of the hinge track is getting narrower and narrower. That is, the overlap between the track rod and the track cover in the folded state is getting smaller and smaller, which makes it very easy for the hinge to derail and become unusable.

[0038] In view of this, such as Figures 1-7 As shown, some embodiments of this utility model provide a hinge structure for a folding display terminal, including: a hinge bracket 1; connecting arms 2 disposed on both sides of the hinge bracket 1, with a snap-fit ​​hole 3 extending through the connecting arms 2 in the thickness direction; a door panel mechanism 4 slidably connected to each connecting arm 2, with a snap-fit ​​post 401 at the end of the door panel mechanism 4 facing away from the terminal display screen; wherein, during the process of the terminal being folded to a fully folded state, each door panel mechanism 4 and the corresponding connecting arm 2 make relative sliding movements, causing the snap-fit ​​post 401 to extend into the snap-fit ​​hole 3 until it snaps in place, thereby restricting the connecting arms 2 on both sides from continuing to make relative movements.

[0039] In the above embodiment, the connecting arm 2 is plate-shaped. One end of the connecting arm 2 extends into the hinge bracket 1 and is connected to the hinge bracket 1. The connection between the connecting arm 2 and the hinge bracket 1 can be hinged or it can slide relative to the hinge bracket 1 while being hinged. The end of the connecting arm 2 away from the hinge bracket 1 extends into the door panel mechanism 4 and is slidably connected to the door panel mechanism 4. There can be two connecting arms 2 and two door panel mechanisms 4 symmetrically arranged along the length direction of the hinge bracket 1. The terminal display screen can be covered on the door panel mechanisms 4 on both sides and connected to the door panel mechanisms 4 on both sides. When the door panel mechanism 4 slides relative to the connecting arm 2, the two door panel mechanisms 4 on both sides slide away from the hinge bracket 1. The locking pin 401 on the door panel mechanism 4 can slide on the surface of the connecting arm 2 until it falls into the locking hole 3 on the connecting arm 2, so that the locking pin 401 locks with the locking hole 3, thereby preventing the two door panel mechanisms 4 on both sides from moving further away from the hinge bracket 1. At this time, the terminal display screen is in a folded state to prevent the door panel mechanism 4 and the connecting arm 2 from separating.

[0040] This utility model provides a hinge structure for a folding display terminal, comprising: a hinge bracket 1; connecting arms 2 disposed on both sides of the hinge bracket 1, with locking holes 3 extending through the thickness direction of the connecting arms 2; and a door panel mechanism 4 slidably connected to each connecting arm 2, with a locking post 401 at the end of the door panel mechanism 4 facing away from the terminal display screen. During the process of folding the terminal to a fully folded state, each door panel mechanism 4 and its corresponding connecting arm 2 slide relative to each other, causing the locking post 401 to extend into the locking hole 3 until it engages, thereby restricting the connecting arms 2 on both sides from continuing to move relative to each other. Through the engagement of the locking post 401 and the locking hole 3, further sliding of the connecting arm 2 and the door panel mechanism 4 is restricted, preventing the door panel mechanism 4 from separating from the connecting arm 2. This solves the problem of small overlap and easy hinge derailment during folding in the prior art, achieving the effect of the door panel mechanism 4 and the connecting arm 2 remaining connected and firmly joined.

[0041] In some alternative embodiments, a sloping groove is provided on the side of the snap-fit ​​hole 3 near the hinge bracket 1. The sloping groove extends obliquely to the snap-fit ​​hole 3 in a direction away from the hinge bracket 1. The snap-fit ​​post 401 slides along the sloping direction of the sloping groove until it snaps into the snap-fit ​​hole 3 when the two connecting arms 2 move closer together.

[0042] In the above embodiment, the connecting arm 2 is provided with a sloping groove facing the terminal display screen. The width of the sloping groove can be the same as the width of the snap-fit ​​hole 3. The extension direction of the sloping groove is along the snap-fit ​​hole 3 to the hinge bracket 1, and the depth of the sloping groove can also be extended. The depth of the sloping groove decreases along the direction close to the hinge bracket 1. The snap-fit ​​post 401 extends along the width direction of the sloping groove. The width of the snap-fit ​​post 401 can be less than the width of the sloping groove so that the snap-fit ​​post 401 can slide smoothly in the sloping groove. Furthermore, the end of the sloping groove close to the hinge bracket 1 can be spaced apart from the hinge bracket 1. The end of the sloping groove close to the hinge bracket 1 can be provided with a step. When the terminal display screen is fully unfolded, the snap-fit ​​posts 401 on both sides abut against the end face of the sloping groove, thereby preventing the terminal display screen from unfolding further.

[0043] In some optional embodiments, the door panel mechanism 4 includes a door panel body 402 and a middle frame fixing block 403; the door panel body 402 is connected to the middle frame fixing block 403, the middle frame fixing block 403 is provided with a sliding groove 404, the connecting arm 2 extends into the sliding groove 404 and is slidably connected to the middle frame fixing block 403; a snap-fit ​​post 401 is provided at the end of the door panel body 402 away from the terminal display screen; the middle frame fixing block 403 is used to connect the middle frame of the terminal.

[0044] In the above embodiment, the door panel body 402 can be plate-shaped and can be connected to the middle frame fixing block 403. Both the door panel body 402 and the middle frame fixing block 403 are located at the end of the connecting arm 2 away from the hinge bracket 1. The door panel body 402 is located between the connecting arm 2 and the terminal display screen and is connected to the terminal display screen. The middle frame fixing block 403 is provided with a sliding groove 404. The cross-sectional shape of the sliding groove 404 is consistent with the cross-sectional shape of the connecting arm 2. The connecting arm 2 extends into the sliding groove 404, so that the middle frame fixing block 403 can drive the door panel body 402 to slide relative to the connecting arm 2. The surface of the door panel body 402 facing the connecting arm 2 is provided with a locking post 401, so that the locking post 401 can slide relative to the surface of the connecting arm 2 until it falls into the locking hole 3, so that the door panel body 402 and the middle frame fixing block 403 are fixed relative to the connecting arm 2.

[0045] In some optional embodiments, it also includes: virtual swing arms 5 disposed on both sides of the hinge bracket 1, with the end of the virtual swing arm 5 away from the terminal display screen hinged to the middle frame fixing block 403; when the two virtual swing arms 5 move towards each other, the virtual swing arms 5 drive the connecting arm 2 to slide relative to the middle frame fixing block 403.

[0046] In the above embodiment, two virtual swing arms 5 are provided, and the two virtual swing arms 5 are symmetrically arranged relative to the hinge bracket 1. One end of the virtual swing arm 5 extends into the hinge bracket 1 and is slidably connected to the hinge bracket 1. The other end of the virtual swing arm 5 extends between the door panel body 402 and the middle frame fixing block 403 and is connected to the door panel body 402 and the middle frame fixing block 403 respectively through a pivot. The pivot extends along the length direction of the door panel body 402 and the middle frame fixing block 403. The door panel body 402 can also be connected to the middle frame fixing block 403 through the pivot, so that the door panel body 402 and the middle frame fixing block 403 are connected to each other. The frame fixing block 403 is connected to the virtual swing arm 5. When rotating, the virtual swing arm 5 can drive the door panel body 402 and the middle frame fixing block 403 to rotate eccentrically relative to the hinge bracket 1, so that the door panel body 402 and the middle frame fixing block 403 can move closer to or further away from the hinge bracket 1. The virtual swing arm 5 can indirectly drive the connecting arm 2 to slide through the door panel body 402 and the middle frame fixing block 403. The door panel body 402 and the middle frame fixing block 403 can slide relative to the connecting arm 2, so that the locking post 401 can slide relative to the connecting arm 2, and the locking post 401 can fall into the locking hole 3 and lock.

[0047] In some alternative embodiments, the hinge bracket 1 includes an arc-shaped track, and the virtual swing arm 5 has an arc surface and is slidably connected to the arc-shaped track; the arc-shaped track is fixed to the hinge bracket 1 by rivets.

[0048] In the above embodiment, the hinge bracket 1 includes a long strip-shaped shell on the back and a sliding block installed inside the long strip-shaped shell. The sliding block can be fixed to the shell by two rivets. Two arc-shaped tracks can be symmetrically arranged on the sliding block away from the shell. Both arc-shaped tracks are semi-cylindrical. An arc surface is provided at the end of the virtual swing arm 5 that is connected to the hinge bracket 1. The arc surface can also be semi-cylindrical. The diameter of the arc surface is smaller than the diameter of the arc track. The virtual swing arm 5 extends into the arc track on the sliding block through the arc surface so that the virtual swing arm 5 can slide relative to the sliding block. The axis of the arc surface and the axis of the arc track are arranged at intervals, so that the virtual swing arm 5 can rotate eccentrically relative to the sliding block.

[0049] The rivet can fix the sliding block inside the housing by pressing. The rivet can expand the hole in the housing, and the expanded hole can press against the sliding block, thereby connecting the housing and the sliding block.

[0050] In some optional embodiments, the hinge bracket 1 is provided with a fixed cam block 6 and a movable cam block 7, which are respectively driven to the two sides of the connecting arm 2; wherein, when the connecting arm 2 rotates, it pushes the movable cam block 7 to move along the length direction of the hinge bracket.

[0051] In the above embodiment, the fixed cam block 6 and the movable cam block 7 are respectively disposed on both sides of the connecting arm 2. The fixed cam block 6 and the movable cam block 7 are respectively connected to the connecting arm 2 in a transmission manner. The housing is provided with two connecting shafts extending along the length direction. The two connecting shafts are arranged at intervals. The two connecting shafts pass through one connecting arm 2 and are rotatably connected so that each connecting arm 2 can rotate on one connecting shaft. The two connecting shafts pass through the fixed cam block 6 and the movable cam block 7 respectively. The connecting shaft is provided with a step at the end of the movable cam block 7 away from the fixed cam block 6 so that the connecting shaft can abut against the movable cam block 7. Thus, the movable cam block 7, the fixed cam block 6 and the connecting arm 2 are connected together by the connecting shaft. When the two connecting arms 2 rotate, they can rotate around the axis of the connecting shaft. The rotation direction and rotation angle of the connecting arm 2 are limited by the fixed cam block 6 and the movable connecting block.

[0052] In some alternative embodiments, the cam teeth on both sides of the connecting arm 2 mesh with the cam teeth on the fixed cam block 6 and the movable cam block 7, respectively.

[0053] In the above embodiment, cam teeth are provided on both sides of the connecting arm 2, and cam teeth are provided on the side of the fixed cam block 6 and the movable cam block 7 near the connecting arm 2. The connecting arm 2 is connected to the fixed cam block 6 and the movable cam block 7 through the cam teeth. The cam teeth can be provided with multiple teeth, and multiple teeth are also provided on the fixed cam block 6 and the movable cam block 7. Each tooth is provided with a rounded corner, so that the connecting arm 2 is more effortless to rotate. When the connecting arm 2 rotates, it can also squeeze the fixed cam block 6 and the movable cam block 7 on both sides through the cam teeth, so that the movable cam block 7 and the connecting arm 2 can move along the length direction of the shell.

[0054] Optionally, the width of the sliding groove 404 on the middle frame fixing block 403 can be greater than the width of the connecting arm 2, so that when the connecting arm 2 moves along the length direction of the housing, it also moves along the width direction of the sliding groove 404.

[0055] Optionally, the sidewalls of the cam teeth can also be set as planes, and the transmission between adjacent cam teeth is achieved through the meshing of the teeth.

[0056] In some alternative embodiments, the fixed cam block 6 is provided with a through hole, through which the fixed cam block 6 is limited to the hinge bracket 1 by a screw passing through the through hole. The diameter of the through hole is larger than the diameter of the screw thread but smaller than the diameter of the screw nut.

[0057] In the above embodiment, the through hole is circular and extends through the thickness direction of the fixed cam block 6. Correspondingly, a cylindrical boss connected to the through hole is provided on the housing. The boss is inserted into the through hole to fix the fixed cam block 6. At the same time, a screw is tightened into the boss. The diameter of the screw nut is larger than the diameter of the through hole, thereby effectively pressing the fixed cam block 6 onto the housing. The screw thread extends into the boss and is threaded, thereby fixing the fixed cam block 6.

[0058] In some alternative embodiments, an elastic element 8 is also included, one end of which abuts against the hinge bracket 1 and the other side abuts against the movable cam block 7. When the connecting arm 2 rotates, it pushes the movable cam block 7 to move, thereby squeezing the elastic element 8 to generate a damping force.

[0059] In the above embodiment, the hinge bracket 1 further includes an abutment block, which is sleeved on the two connecting shafts. The elastic element 8 can be a spring, and there can be two elastic elements 8. The two elastic elements 8 are respectively sleeved on the two connecting shafts. The two ends of the two elastic elements 8 abut against the fixed cam block 6 and the abutment block, respectively. The end of the abutment block away from the elastic element 8 abuts against the step at the end of the two connecting shafts. So when the connecting arm 2 rotates, the connecting arm 2 rotates relative to the fixed cam block 6 and the movable cam block 7. Under the action of the cam teeth on both sides, the gap width between the connecting arm 2 and the fixed cam block 6 and the movable cam block 7 increases. That is, the movable cam block 7 moves away from the fixed cam block 6. The movable cam block 7 drives the two connecting shafts to move synchronously, and the two connecting shafts also drive the abutment block to compress the elastic element 8, so that the elastic element 8 is compressed until the connecting arm 2 is completely folded.

[0060] When the folding connecting arm 2 is opened, the elastic element 8 releases elastic potential energy, thereby driving the abutment block and the two connecting shafts to move. The two connecting shafts then drive the movable cam block 7 to move. Under the action of the cam teeth on both sides, the opening of the connecting arm 2 is more effortless, thus making the folding display screen easier to unfold.

[0061] Some embodiments of this utility model also provide a foldable display terminal, including a foldable display terminal hinge structure.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hinge structure for a foldable display terminal, characterized in that, include: Hinge bracket (1); Connecting arms (2) are provided on both sides of the hinge bracket, and snap-fit ​​holes (3) are provided through the thickness direction of the connecting arms; A door panel mechanism (4) is slidably connected to each of the connecting arms, and a snap-fit ​​post (401) is provided at the end of the door panel mechanism away from the terminal display screen; During the process of folding the terminal to a fully folded state, each of the door panel mechanisms (4) and the corresponding connecting arm (2) slide relative to each other, causing the locking post (401) to extend into the locking hole (3) until it is locked, so as to restrict the connecting arms (2) on both sides from continuing to move relative to each other.

2. The hinge structure for the folding display terminal according to claim 1, characterized in that, The snap-fit ​​hole (3) is provided with a sloping groove on the side near the hinge bracket. The sloping groove extends obliquely to the snap-fit ​​hole in a direction away from the hinge bracket. The snap-fit ​​post (401) slides along the sloping direction of the sloping groove until it snaps into the snap-fit ​​hole when the two connecting arms move closer together.

3. The hinge structure of the folding display terminal according to claim 1, characterized in that, The door panel mechanism (4) includes a door panel body (402) and a middle frame fixing block (403); The door panel body (402) is connected to the middle frame fixing block (403). A sliding groove (404) is provided in the middle frame fixing block (403). The connecting arm (2) extends into the sliding groove (404) and is slidably connected to the middle frame fixing block (403). The door panel body (402) is provided with the snap-fit ​​post (401) at the end opposite to the terminal display screen; The middle frame fixing block (403) is used to connect the middle frame of the terminal.

4. The hinge structure of the folding display terminal according to claim 3, characterized in that, Also includes: The virtual swing arms (5) are set on both sides of the hinge bracket, and the end of the virtual swing arm away from the terminal display screen is hinged to the middle frame fixing block (403); When the virtual swing arms (5) on both sides move closer to each other, the virtual swing arms (5) drive the connecting arm (2) to slide relative to the middle frame fixing block (403).

5. The hinge structure for a folding display terminal according to claim 4, characterized in that, The hinge bracket (1) includes an arc-shaped track, and the virtual swing arm (5) has an arc surface and is slidably connected to the arc-shaped track; The arc-shaped track is fixed to the hinge bracket by rivets.

6. The hinge structure of the folding display terminal according to claim 3, characterized in that, The hinge bracket is provided with a fixed cam block (6) and a movable cam block (7), and the fixed cam block (6) and the movable cam block (7) are respectively connected to the two sides of the connecting arm (2). When the connecting arm (2) rotates, it pushes the movable cam block (7) to move along the length direction of the hinge bracket (1).

7. The hinge structure for a folding display terminal according to claim 6, characterized in that, The cam teeth on both sides of the connecting arm (2) respectively mesh with the cam teeth on the fixed cam block (6) and the movable cam block (7).

8. The hinge structure for a folding display terminal according to claim 6, characterized in that, The fixed cam block (6) is provided with a through hole. The fixed cam block (6) is connected to the hinge bracket (1) by a screw passing through the through hole. The diameter of the through hole is larger than the diameter of the screw thread but smaller than the diameter of the screw nut.

9. The hinge structure for a folding display terminal according to claim 6, characterized in that, It also includes an elastic element (8), one end of which abuts against the hinge bracket and the other side abuts against the movable cam block. When the connecting arm (2) rotates, it pushes the movable cam block (7) to move, thereby squeezing the elastic element (8) to generate a damping force.

10. A foldable display terminal, characterized in that, It includes the hinge structure of the folding display terminal as described in any one of claims 1 to 9.

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