Hinge and folding display device

Abstract

The utility model discloses a hinge and a folding display device, and belongs to the technical field of electronic equipment. The hinge comprises a supporting base, at least two overturning assemblies and an auxiliary supporting piece. The supporting base is provided with a first supporting face and a hollowed-out groove which are arranged in the first direction, and the end, deviating from the switching part, of a swing arm in the overturning assembly is rotationally connected with the supporting base in the hollowed-out groove so that the hinge can be switched between the folded state and the unfolded state. The auxiliary supporting piece is arranged at the opening of the hollowed-out groove in the supporting base, and the face, away from the hollowed-out groove, of the auxiliary supporting piece and the first supporting face in the supporting base can be jointly used for supporting the central bending area of the flexible display panel in the folding display device integrated with the hinge. In other words, when the folding device is in the folded state or the unfolded state, the central bending area of the flexible display panel can be effectively supported through the supporting base and the auxiliary supporting piece, so that the supporting stability of the hinge to the flexible display panel is good.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a hinge and a folding display device. Background Art

[0002] With the development of display technology, more and more display devices will be equipped with foldable display screens. Display devices equipped with foldable display screens can realize the switching of the physical size of the display device, which greatly improves the user experience.

[0003] Currently, a display device equipped with a foldable display screen generally includes a hinge, which is used to drive a housing in the foldable display device to rotate, thereby driving the foldable display screen in the foldable display device to switch between a folded state and an unfolded state.

[0004] However, currently the hinge has poor support stability for the folding display screen when in the folded state. Utility Model Content

[0005] The embodiment of the present application provides a hinge and a folding display device, which can solve the problem of poor support stability of the hinge on the folding display screen in the prior art. The technical solution is as follows:

[0006] In one aspect, a hinge is provided, the hinge comprising:

[0007] A support seat, the support seat extending along a first direction, the support seat having a first support surface and hollow grooves arranged in the first direction;

[0008] At least two flip assemblies, at least two of which are arranged on both sides of the support seat in a second direction, the flip assembly comprising: a swing arm and a transition portion, one end of the swing arm is rotatably connected to the support seat in the hollow groove, the other end of the swing arm is movably connected to the transition portion, and the second direction intersects with the first direction;

[0009] and an auxiliary support member connected to the support seat at the opening of the hollow groove;

[0010] Wherein, a side of the auxiliary support member facing away from the hollow groove and the first support surface are both used to support the central bending area in the flexible display panel.

[0011] Optionally, after the hinge is in the folded state, in the second direction, there is a gap between the swing arm and a side adjacent to the auxiliary support member.

[0012] Optionally, in the second direction, the width of the auxiliary support member is less than or equal to the distance between the axis lines of rotation of the two swing arms in the two flip assemblies relative to the support base.

[0013] Optionally, in the first direction, the width of the auxiliary support member is greater than or equal to the width of the opening of the hollow groove.

[0014] Optionally, the auxiliary supporting member includes an elastic supporting layer.

[0015] Optionally, the hinge further includes: a support platform fixed in the hollow groove, the orthographic projection of the support platform on the plane where the opening of the hollow groove is located is located in the central area of ​​the orthographic projection of the auxiliary support member on the plane where the opening of the hollow groove is located.

[0016] Optionally, the hinge further includes: an adhesive layer located between the auxiliary support member and the support seat, and the auxiliary support member is bonded to the support seat through the adhesive layer.

[0017] Optionally, a surface of the auxiliary support member facing away from the support seat is flush with the first support surface.

[0018] Optionally, one end of the swing arm facing the support seat has an arc-shaped slide groove, and the hollow groove has an arc-shaped slide plate that cooperates with the arc-shaped slide groove, and at least a portion of the arc-shaped slide plate is located in the arc-shaped slide groove.

[0019] In another aspect, a foldable display device is provided, the foldable display device comprising:

[0020] A flexible display panel, at least two housings and a hinge, wherein the at least two housings are connected via the hinge, the flexible display panel is covered on the at least two housings, and the hinge is any one of the hinges given above.

[0021] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0022] A hinge may include: a support seat, at least two flip assemblies and an auxiliary support member. The support seat has a first support surface and a hollow groove arranged along a first direction, and the end of the swing arm in the flip assembly away from the adapter is rotatably connected to the support seat in the hollow groove to realize the switching of the hinge between the folded state and the unfolded state (that is, when the end of the swing arm away from the adapter gradually rotates out of the hollow groove, the hinge switches to the folded state; and when the part of the end of the swing arm away from the adapter rotated out of the hollow groove gradually turns into the hollow groove, the hinge switches to the unfolded state). By arranging an auxiliary support member at the opening of the hollow groove in the support seat, the side of the auxiliary support member away from the hollow groove and the first support surface in the support seat can be used together to support the central bending area of ​​the flexible display panel in the folding display device integrated with the hinge. That is, when the folding device is in the folded state or the unfolded state, the central bending area of ​​the flexible display panel can be effectively supported by the support seat and the auxiliary support member, so that the hinge has good support stability for the flexible display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a structural schematic diagram of a hinge provided in an embodiment of the present application;

[0025] Figure 2 yes Figure 1 An exploded schematic diagram of a partial structure of a hinge is shown;

[0026] Figure 3 yes Figure 1 A partial structural schematic diagram of the hinge shown in a folded state;

[0027] Figure 4 is a partial structural schematic diagram of another hinge provided in an embodiment of the present application;

[0028] Figure 5 It is a partial structural schematic diagram of a hinge without an auxiliary support member provided in an embodiment of the present application;

[0029] Figure 6 is an exploded schematic diagram of a partial structure of another hinge provided in an embodiment of the present application;

[0030] Figure 7 It is a front view of a foldable display device provided by an embodiment of the present application in a folded state.

[0031] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0033] The hinge provided in the embodiment of the present application can be applied to electronic devices (for example, foldable display devices). Under different usage requirements, users can fold or unfold the foldable display device to meet different user needs. For example, when a user needs to carry a foldable display device with him, he can fold it to reduce its volume, thereby improving portability; when the user is using the foldable display device, he can unfold it to provide a larger display area and operation area, thereby improving convenience. In practical applications, the types of foldable display devices can be divided into many types, for example, they can be mobile phones, tablet computers, laptops, e-books, etc.

[0034] Taking a mobile phone as an example, the mobile phone may include a first shell and a second shell connected by a hinge. Under the action of the hinge, the first shell and the second shell can rotate relative to each other. The flexible screen can be set on the surface of the first shell and the second shell. When the mobile phone is unfolded, the flexible screen can provide a larger display area and operation area to improve the performance. When the mobile phone is folded, it is not only easy to carry, but also the folded flexible screen can be used. The following embodiment will describe the structure of the hinge in the foldable display device in detail.

[0035] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a structural schematic diagram of a hinge provided in an embodiment of the present application, Figure 2 yes Figure 1 The exploded schematic diagram of the hinge part is shown. Figure 3 yes Figure 1 The hinge 000 is a partial structural schematic diagram when it is in a folded state. The hinge 000 may include: a support base 100 , at least two flip assemblies 200 and an auxiliary support member 300 .

[0036] The support base 100 in the hinge 000 may extend along the first direction f1 , and the support base 100 may have a first support surface m1 and a hollow groove 101 arranged in the first direction f1 .

[0037] At least two flip assemblies 200 in the hinge 000 are relatively arranged on both sides of the support base 100 in the second direction f2. That is, a part of the flip assemblies in the at least two flip assemblies 200 in the hinge 000 is located on one side of the support base 100, and the other part of the flip assemblies is located on the other side of the support base 100. It should be noted that the following embodiments are schematically described by taking the relative arrangement of two flip assemblies 200 as an example. Here, when the two flip assemblies 200 in the hinge rotate relative to the support base 100 and the hinge is in an unfolded state, the two relatively arranged flip assemblies 200 can be distributed on both sides of the support base 100 in the second direction. Among them, the flip assembly 200 may include: a swing arm 201 and a transition part 202, one end of the swing arm 201 is rotatably connected to the support base 100 in the hollow groove 101 of the support base 100, and the other end of the swing arm 201 is movably connected to the transition part 202, and the first direction f1 and the second direction f2 may intersect. For example, the first direction f1 may be perpendicular to the second direction f2.

[0038] The auxiliary support member 300 in the hinge 000 can be connected to the support base 100 at the opening of the hollow groove 101 in the support base 100. For example, the auxiliary support member 300 can be fixed at the opening of the hollow groove 101 in the support base 100.

[0039] Among them, the side m2 of the auxiliary support member 300 in the hinge 000 away from the hollow groove 101 in the support base 100 and the first support surface m1 of the support base 100 can both be used to support the central bending area of ​​the flexible display panel in the folding display device.

[0040] In the embodiment of the present application, the support base 100 has a first support surface m1 and a hollow groove 101 arranged along the first direction f1, and the end of the swing arm 201 in the flip assembly 200 away from the adapter 202 is rotatably connected to the support base 100 in the hollow groove 101 to achieve the switching of the hinge 000 between the folded state and the unfolded state (that is, when the end of the swing arm away from the adapter gradually rotates out of the hollow groove, the hinge switches to the folded state. When the part of the end of the swing arm away from the adapter that rotates out of the hollow groove gradually turns into the hollow groove, the hinge switches to the unfolded state). By providing an auxiliary support member 300 at the opening of the hollow groove 101 in the support base 100, a side m2 of the auxiliary support member 300 away from the hollow groove 101 and the first support surface m1 in the support base 100 can be used together to support the central bending area of ​​the flexible display panel in the folding display device integrated with the hinge. That is, when the foldable display device is in a folded state or an unfolded state, the central bending area of ​​the flexible display panel can be effectively supported by the support base 100 and the auxiliary support member 300, so that the hinge 000 has good support stability for the flexible display panel. For example, when the foldable display device is in a folded state, after the foldable display device falls, the relatively soft flexible display panel can be effectively supported by one side of the auxiliary support member 300 and the first support surface of the support base 100, thereby avoiding the undesirable phenomenon of damage to the flexible display panel.

[0041] In summary, the embodiment of the present application provides a hinge, which may include: a support seat, at least two flip assemblies and an auxiliary support member. The support seat has a first support surface and a hollow groove arranged along a first direction, and the end of the swing arm in the flip assembly away from the adapter is rotatably connected to the support seat in the hollow groove to realize the switching of the hinge between the folded state and the unfolded state (that is, when the end of the swing arm away from the adapter gradually rotates out of the hollow groove, the hinge switches to the folded state; and when the part of the end of the swing arm away from the adapter that rotates out of the hollow groove gradually turns into the hollow groove, the hinge switches to the unfolded state). By arranging an auxiliary support member at the opening of the hollow groove in the support seat, the side of the auxiliary support member away from the hollow groove and the first support surface in the support seat can be used together to support the central bending area of ​​the flexible display panel in the folding display device integrated with the hinge. That is, when the folding device is in a folded state or an unfolded state, the central bending area of ​​the flexible display panel can be effectively supported by the support seat and the auxiliary support member, so that the hinge has good support stability for the flexible display panel.

[0042] Optional, please refer to Figure 4 , Figure 4It is a partial structural schematic diagram of another hinge provided by an embodiment of the present application. After the hinge 000 is in the folded state, in the second direction f2, there may be a gap d1 between the swing arm 201 in each flip assembly 200 and the side adjacent to the auxiliary support member 300. That is, there may be a gap d1 between the side adjacent to the swing arm 201 in the auxiliary support member 300 and one side of the swing arm. In this case, when the hinge 000 is in the folded state, by setting a gap of a certain width between the swing arm 201 and the side of the auxiliary support member 300, it can be ensured that when the hinge 000 switches between the folded state and the unfolded state, the swing arm 201 in the flip assembly 200 will not generate motion interference with the auxiliary support member 300, thereby ensuring the smooth rotation of the swing arm 201. It should be noted that the width of the gap d1 between the swing arm 201 in the flip assembly 200 and the side of the auxiliary support member 300 can be set according to the rotation trajectory of the swing arm 201 relative to the support seat 100, so as to ensure that the two will not interfere with each other and provide good support for the flexible display panel.

[0043] In the embodiments of the present application, Figure 4 As shown, in the second direction f2, the width d2 of the auxiliary support member 300 can be less than or equal to the distance between the axis lines of rotation of the two swing arms 201 in the two flip assemblies 200 relative to the support base 100. In this way, the width d2 of the auxiliary support member 300 can be set by the width between the axis lines of rotation of the two swing arms 201 in the flip assembly 200 relative to the support base 100, ensuring that the auxiliary support member 300 does not interfere with the rotation of the swing arms 201 relative to the support base 100. In the present application, the hollow groove 101 of the support seat 100 can be divided into a first sub-hollow groove and a second sub-hollow groove (not shown in the figure) distributed along the second direction. In the two relatively arranged flip assemblies 200, the end of the swing arm 201 in one flip assembly 200 is away from the adapter 202 and rotates around the virtual axis line of the first sub-hollow groove in the first sub-hollow groove, and the end of the swing arm in the other flip assembly is away from the adapter and rotates around the virtual axis line of the second sub-hollow groove in the second sub-hollow groove.

[0044] Optional, please refer to Figure 4 and Figure 5 , Figure 5It is a partial structural schematic diagram of a hinge provided by an embodiment of the present application without an auxiliary support member. In the first direction f1, the width d3 of the auxiliary support member 300 can be greater than or equal to the width d4 of the opening of the hollow groove 101 in the support seat 100. In this case, by setting the width d3 of the auxiliary support member 300 in the first direction f1 to be greater than or equal to the width d4 of the opening of the hollow groove 101 in the support seat 100 in the first direction f1, the auxiliary support member 300 can further effectively support the flexible display panel in the folding display device, thereby ensuring the reliability of the folding display device. In the present application, the side m2 of the auxiliary support member 300 that is away from the hollow groove 101 in the support seat 100 can be flush with the first support surface m1 in the support seat 100, so that the support effect on the flexible display panel is effectively guaranteed.

[0045] In an embodiment of the present application, the auxiliary support member 300 in the hinge 000 may include an elastic support layer. In this case, the auxiliary support member 300 includes an elastic support layer fixed at the opening of the hollow groove. When the central bending area of ​​the flexible display panel applies a large force to the elastic support layer, the auxiliary support member 300 with a certain elastic deformation ability can play a certain buffering role on the flexible display panel, thereby preventing the flexible display panel from being damaged under a large instantaneous force. For example, the elastic support layer may be an elastic woven cloth. It should be noted that the auxiliary support member 300 may also be a component of other materials, such as a rubber layer with a smaller thickness, etc., which is not limited in this embodiment of the present application. In this application, please refer to Figure 6 , Figure 6 It is an exploded schematic diagram of a partial structure of another hinge provided in an embodiment of the present application. Hinge 000 may also include: an adhesive layer 400 located between the auxiliary support member 300 and the support seat 100, and the auxiliary support member 300 may be bonded to the support seat 100 through the adhesive layer 400. In this case, the auxiliary support member 300 and the support seat 100 are bonded and fixed by the adhesive layer 400, which is convenient for the operator to assemble and adjust the position of the auxiliary support member 300. For example, for each auxiliary support member, the two ends of the auxiliary support member can be bonded and fixed to the support seat through an adhesive layer respectively. For example, the adhesive layer can be a double-sided tape or a foam adhesive layer. It should be noted that the auxiliary support member 300 can also be fixed to the support seat 100 by other connection methods, and the embodiment of the present application does not make specific limitations on this.

[0046] Optional, such as Figure 5As shown, the hinge 000 may also include: a support platform 500 fixed in the hollow groove 101 in the support seat 100, and the orthographic projection of the support platform 500 on the plane where the opening of the hollow groove 101 is located can be located in the central area of ​​the orthographic projection of the auxiliary support member 300 on the plane where the opening of the hollow groove 101 is located. In this case, by arranging the support platform 500 in the hollow groove 101 in the support seat 100, even if the auxiliary support member 300 expands into the hollow groove 101 under the force of the flexible display panel, the deformed auxiliary support member 300 can be supported by the support platform 500 to prevent the auxiliary support member 300 from falling off the support seat 100. It should be noted that when the auxiliary support member is in a flat state, the support table surface of the support platform 500 facing the auxiliary support member 300 can have a small gap with the auxiliary support member 300 in a direction perpendicular to the first support surface of the support seat 300.

[0047] In the embodiments of the present application, Figure 6 As shown, the end of the swing arm 201 in the flip assembly 200 facing the support seat 100 may have an arc-shaped slide groove 201a, and the hollow groove 101 in the support seat 100 may have an arc-shaped slide plate 101a that cooperates with the arc-shaped slide groove 201a, and at least part of the arc-shaped slide plate 101a may be located in the arc-shaped slide groove 201a. In this case, the swing arm 201 can slide in cooperation with the arc-shaped slide plate 101a on the support seat 100 through the arc-shaped slide groove 201a, and the swing arm 201 can be limited in the direction perpendicular to the first support surface of the support seat through the cooperation of the arc-shaped slide groove 201a and the arc-shaped slide plate 101a, without the need to set a plate on the support seat 100 to limit the swing arm 201, thereby ensuring that the overall thickness of the hinge 000 is small. The hinge 000 in the embodiment of the present application is provided with an auxiliary support member 300 for covering the opening of the hollow groove 101. Even if one end of the swing arm 201 is rotated out of the hollow groove 101, the auxiliary support member 300 and the support base 100 can still be used together to support the flexible display panel.

[0048] In this application, if Figure 6As shown, the end of the swing arm 201 in the flip assembly 200 facing the support seat 101 may have a sliding block 201b, and the arc-shaped slide groove 201a may be located on the side of the sliding block 201b along the first direction f1. The bottom surface of the hollow groove 101 in the support seat 100 may have a first arc-shaped sliding surface (not shown in the figure), and the side of the sliding block 201b facing the first arc-shaped sliding surface may have a second arc-shaped sliding surface that contacts and slides with the first arc-shaped sliding surface. For example, one end of the swing arm 201 facing the support seat 100 may have two arc-shaped slide grooves 201a arranged oppositely along the first direction f1, and the hollow groove 101 in the support seat 100 may have two arc-shaped slide plates 101a arranged oppositely along the first direction f1, and the two arc-shaped slide plates 101a slide in a one-to-one correspondence with the two arc-shaped slide grooves 201a.

[0049] In summary, the embodiment of the present application provides a hinge, which may include: a support seat, at least two flip assemblies and an auxiliary support member. The support seat has a first support surface and a hollow groove arranged along a first direction, and the end of the swing arm in the flip assembly away from the adapter is rotatably connected to the support seat in the hollow groove to realize the switching of the hinge between the folded state and the unfolded state (that is, when the end of the swing arm away from the adapter gradually rotates out of the hollow groove, the hinge switches to the folded state; and when the part of the end of the swing arm away from the adapter that rotates out of the hollow groove gradually turns into the hollow groove, the hinge switches to the unfolded state). By arranging an auxiliary support member at the opening of the hollow groove in the support seat, the side of the auxiliary support member away from the hollow groove and the first support surface in the support seat can be used together to support the central bending area of ​​the flexible display panel in the folding display device integrated with the hinge. That is, when the folding device is in a folded state or an unfolded state, the central bending area of ​​the flexible display panel can be effectively supported by the support seat and the auxiliary support member, so that the hinge has good support stability for the flexible display panel.

[0050] The present application also provides a foldable display device. Figure 7 , Figure 7 It is a front view of a folding display device in a folded state provided by an embodiment of the present application. The folding display device may include: a flexible display panel 001, at least two housings (not shown in the figure) and a hinge 000. At least two housings may be connected by a hinge, and the flexible display panel may be covered on at least two housings. In this way, the housing can be unfolded or folded by the hinge, and then the housing can drive the flexible display panel to unfold or fold. For example, the housing can be fixedly connected to the adapter fixture in the hinge. For example, the housing in the folding display device can be fixedly connected to the adapter in the flip assembly.

[0051] In summary, the embodiments of the present application provide a folding display device, which may include: a flexible display panel, at least two housings and a hinge. The support seat in the hinge has a first support surface and a hollow groove arranged along a first direction, and the end of the swing arm in the flip assembly away from the adapter is rotatably connected to the support seat in the hollow groove to achieve the switching of the hinge between the folded state and the unfolded state (that is, when the end of the swing arm away from the adapter gradually rotates out of the hollow groove, the hinge switches to the folded state; and when the part of the end of the swing arm away from the adapter that rotates out of the hollow groove gradually turns into the hollow groove, the hinge switches to the unfolded state). By providing an auxiliary support member at the opening of the hollow groove in the support seat, the side of the auxiliary support member away from the hollow groove and the first support surface in the support seat can be used to support the central bending area of ​​the flexible display panel in the folding display device integrated with the hinge. That is, when the folding device is in a folded state or an unfolded state, the central bending area of ​​the flexible display panel can be effectively supported by the support seat and the auxiliary support member, so that the hinge has better support stability for the flexible display panel.

[0052] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0058] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hinge, characterized in that: include: A support base (100), the support base (100) extending along a first direction (f1), the support base (100) having a first support surface (m1) and a hollow groove (101) arranged in the first direction (f1); At least two flipping assemblies (200), at least two of the flipping assemblies (200) are arranged on both sides of the support seat (100) in a second direction (f2) relative to each other, the flipping assemblies (200) comprising: a swing arm (201) and a transition portion (202), one end of the swing arm (201) is rotatably connected to the support seat (100) in the hollow groove (101), the other end of the swing arm (201) is movably connected to the transition portion (202), and the second direction (f2) intersects with the first direction (f1); and an auxiliary support member (300) connected to the support seat (100) at the opening of the hollow groove (101); Wherein, a surface (m2) of the auxiliary support member (300) facing away from the hollow groove (101) and the first support surface (m1) are both used to support the central bending area in the flexible display panel.

2. The hinge according to claim 1, characterized in that: After the hinge is in the folded state, in the second direction (f2), a gap (d1) is provided between the swing arm (201) and a side adjacent to the auxiliary support member (300).

3. The hinge according to claim 2, characterized in that: In the second direction (f2), the width (d2) of the auxiliary support member (300) is less than or equal to the distance between the axis lines of rotation of the two swing arms (201) in the two flip assemblies (200) relative to the support base (100).

4. The hinge according to claim 1, characterized in that: In the first direction (f1), the width (d3) of the auxiliary support member (300) is greater than or equal to the width of the opening of the hollow groove (101).

5. The hinge according to any one of claims 1 to 4, characterized in that: The auxiliary support member (300) comprises an elastic support layer.

6. The hinge according to claim 5, characterized in that: The hinge (000) further comprises: a support platform (500) fixed in the hollow groove (101), wherein the orthographic projection of the support platform (500) on the plane where the opening of the hollow groove (101) is located is located in the central area of ​​the orthographic projection of the auxiliary support member (300) on the plane where the opening of the hollow groove (101) is located.

7. The hinge according to any one of claims 1 to 4, characterized in that: The hinge further comprises: an adhesive layer (400) located between the auxiliary support member (300) and the support seat (100), and the auxiliary support member (300) is bonded to the support seat (100) via the adhesive layer (400).

8. The hinge according to any one of claims 1 to 4, characterized in that: A surface (m2) of the auxiliary support member (300) facing away from the hollow groove (101) is flush with the first support surface (m1).

9. The hinge according to any one of claims 1 to 4, characterized in that: The swing arm (201) has an arc-shaped slide groove (201a) at one end facing the support seat (100), and the hollow groove (101) has an arc-shaped slide plate (101a) matched with the arc-shaped slide groove (201a), and at least a part of the arc-shaped slide plate (101a) is located in the arc-shaped slide groove (201a).

10. A foldable display device, characterized in that: include: A flexible display panel, at least two housings and the hinge according to any one of claims 1 to 9, wherein the at least two housings are connected by the hinge, and the flexible display panel is covered on the at least two housings.

Images