Hinge and foldable electronic device including same

Abstract

According to an embodiment of the present invention, a foldable electronic device including a hinge may be provided. The foldable electronic device may comprise: a first housing; a second housing; the hinge which connects the first housing and the second housing so that the first housing and the second housing can rotate about a folding axis; and a flexible display. The hinge may include: a first rotating member including a first recessed rail; a second rotating member including a second recessed rail; a first arm member which rotates in accordance with the rotation of the first rotating member; a second arm member which rotates in accordance with the rotation of the second rotating member; a rotating bracket including a first protruding rail corresponding to the first recessed rail and a second protruding rail corresponding to the second recessed rail; a first connection member connecting the first rotating member and the first arm member; and a second connecting member connecting the second rotating member and the second arm member. Also, the hinge may include a reinforced portion.

Description

Hinge and foldable electronic device including it

[0001] The presently disclosed embodiments relate to foldable electronic devices, for example, to hinges and foldable electronic devices including the hinges.

[0002] With the advancement of electronics, information, and communication technologies, a variety of functions are being integrated into a single electronic device. For example, smartphones incorporate functions such as audio playback, imaging, and electronic notebooks in addition to communication functions. Furthermore, the installation of additional applications allows smartphones to offer even more diverse functions.

[0003] As the use of personal, portable electronic devices such as smartphones becomes more widespread, user demand for portability and ease of use is increasing. For example, touchscreen displays serve as output devices, such as screens, for displaying visual information, while also providing a virtual keyboard that replaces physical input devices (e.g., keypads). Furthermore, electronic devices with flexible displays, such as foldable or rollable displays, have become commercially available to provide enhanced usability (e.g., larger screens).

[0004] The above information may be provided as background information to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art in connection with the present disclosure.

[0005] According to one embodiment of the present disclosure, a foldable electronic device including a hinge can be provided. The foldable electronic device can include a first housing; a second housing; a hinge that rotatably connects the first housing and the second housing about a folding axis; and a flexible display. The hinge includes a first rotation member configured to rotate about a first axis and including a first engraved rail recessed toward the first direction on a surface facing a first direction parallel to the first axis; a second rotation member configured to rotate about a second axis parallel to the first axis and including a second engraved rail recessed toward the first direction on a surface facing the first direction; a first arm member that rotates in response to the rotation of the first rotation member; a second arm member that rotates in response to the rotation of the second rotation member; The rotation bracket may include a first positive rail corresponding to the first negative rail and a second positive rail corresponding to the second negative rail; a first connecting member connecting the first rotation member and the first arm member; and a second connecting member connecting the second rotation member and the second arm member. In addition, the hinge may include a reinforcing member protruding in a direction parallel to the first axis from at least a portion of the first negative rail at a position of an end of the first negative rail, and protruding in a direction parallel to the first axis from at least a portion of the second negative rail at a position of an end of the second negative rail.

[0006] According to one embodiment of the present disclosure, a foldable electronic device including a hinge can be provided. The foldable electronic device includes a first housing; a second housing; a hinge that rotatably connects the first housing and the second housing about a folding axis; and a flexible display, wherein the hinge comprises: a first rotation member configured to rotate about a first axis and including a first rail formed on a surface facing a first direction parallel to the first axis; a second rotation member configured to rotate about a second axis parallel to the first axis and including a second rail formed on a surface facing the first direction; a first arm member configured to rotate in response to rotation of the first rotation member and including a third rail formed on a surface facing the first direction; a second arm member configured to rotate in response to rotation of the second rotation member and including a fourth rail formed on a surface facing the first direction; It may include a rotating bracket including a rail corresponding to the first rail and a rail corresponding to the second rail; a first connecting member connecting the first rotating member and the first arm member; a second connecting member connecting the second rotating member and the second arm member; and a cam member configured to engage with the first arm member and the second arm member, the cam member including a rail corresponding to the third rail and a rail corresponding to the fourth rail.And, the hinge may include a reinforcing member that protrudes in a direction parallel to the first axis from at least a portion of the first rail at a position of an end of the first rail, protrudes in a direction parallel to the first axis from at least a portion of the second rail at a position of an end of the second rail, protrudes in a direction parallel to the first axis from at least a portion of the third rail at a position of an end of the third rail, and protrudes in a direction parallel to the first axis from at least a portion of the fourth rail at a position of an end of the fourth rail.

[0007] According to one embodiment of the present disclosure, a hinge for a foldable electronic device can be provided. The hinge includes: a first rotation member configured to rotate about a first axis and including a first concave rail formed concavely toward a first direction on a surface facing a first direction parallel to the first axis; a second rotation member configured to rotate about a second axis parallel to the first axis and including a second concave rail formed concavely toward the first direction on a surface facing the first direction; a first arm member configured to rotate in response to the rotation of the first rotation member; a second arm member configured to rotate in response to the rotation of the second rotation member; a rotation bracket including a first concave rail corresponding to the first concave rail and a second concave rail corresponding to the second concave rail; a first connecting member connecting the first rotation member and the first arm member; And a second connecting member connecting the second rotating member and the second arm member; may include; and, the hinge may include a reinforcing member that is formed to protrude in a direction parallel to the first axis from at least a portion of the first negative rail at a position of an end of the first negative rail, and is formed to protrude in a direction parallel to the first axis from at least a portion of the second negative rail at a position of an end of the second negative rail.

[0008] The above-described aspects or other aspects, configurations and / or advantages of one embodiment of the present disclosure may be further clarified by the following detailed description taken in conjunction with the accompanying drawings.

[0009] FIG. 1 is a diagram illustrating a foldable electronic device in an unfolded state according to one embodiment of the present disclosure.

[0010] FIG. 2 is a drawing illustrating a foldable electronic device in a folded state according to one embodiment of the present disclosure.

[0011] FIG. 3 is an exploded perspective view showing a flexible display disassembled from a housing according to one embodiment of the present disclosure.

[0012] FIG. 4 is a cross-sectional view of the foldable electronic device of FIG. 1 taken along the line A-A'.

[0013] FIG. 5 is a cross-sectional view of the foldable electronic device of FIG. 2 taken along the B-B' direction.

[0014] FIG. 6 is an exploded perspective view of a hinge according to one embodiment of the present disclosure.

[0015] FIG. 7 is a perspective view of a first rotating member according to one embodiment.

[0016] FIG. 8 is a drawing showing a top view of a first rotating member according to one embodiment.

[0017] FIG. 9 is a drawing showing a first rotation member and a second rotation member coupled to a rotation bracket and a connecting member according to one embodiment of the present disclosure.

[0018] FIG. 10 is a drawing showing a state in which a first rotation member, a second rotation member, and a rotation bracket are combined according to one embodiment of the present disclosure.

[0019] FIG. 11 is a drawing showing a first rotating member coupled to a rotating bracket according to one embodiment of the present disclosure.

[0020] FIG. 12 is a drawing showing a rotation bracket coupled to a first rotation member according to one embodiment of the present disclosure.

[0021] FIG. 13a is a drawing showing the inner end of the first rail of the first rotating member according to a comparative example.

[0022] FIG. 13b is a drawing showing the inner end of the first rail of the first rotating member according to a comparative example.

[0023] FIG. 13c is a drawing showing the inner end of the first rail of the first rotating member according to a comparative example.

[0024] FIG. 14a is a drawing showing an inner end of a first rail of a first rotating member according to one embodiment of the present disclosure.

[0025] FIG. 14b is a drawing showing an inner end of a first rail of a first rotating member according to one embodiment of the present disclosure.

[0026] FIG. 14c is a drawing showing an inner end of a first rail of a first rotating member according to one embodiment of the present disclosure.

[0027] FIG. 15 is a drawing showing a state in which a first rotation member and a second rotation member are secured to a rotation bracket when the foldable electronic device is unfolded according to one embodiment of the present disclosure.

[0028] FIG. 16 is a drawing showing a rotation bracket as viewed in the width direction of a foldable electronic device according to one embodiment of the present disclosure.

[0029] FIG. 17 is a drawing showing a view of the rotation bracket when the first rotation member is coupled to the rotation bracket in the width direction of the foldable electronic device according to one embodiment of the present disclosure.

[0030] Fig. 18a is a drawing showing the state of coupling of the first rotating member and the rail of the rotating bracket in a cross-section taken along line D-D' of Fig. 17.

[0031] Fig. 18b is a drawing showing the state of coupling of the first rotating member and the rail of the rotating bracket in a cross-section taken along line E-E' of Fig. 17.

[0032] FIG. 19 is a perspective view of a first arm member according to one embodiment of the present disclosure.

[0033] FIG. 20 is a perspective view showing a first arm member and a second arm member coupled with a first cam member and a second cam member according to one embodiment of the present disclosure.

[0034] FIG. 21 is a perspective view showing a state in which a rail of a female member and a rail of a cam member are combined according to one embodiment of the present disclosure.

[0035] FIG. 22 is a drawing showing a state in which a first arm member, a second arm member, and a cam member are combined according to one embodiment of the present disclosure.

[0036] FIG. 23 is a drawing showing a second arm member coupled to a cam member according to one embodiment of the present disclosure.

[0037] FIG. 24 is a drawing showing a cam member coupled to a second arm member according to one embodiment of the present disclosure.

[0038] Figure 25a is a drawing showing a rail of a female member according to a comparative example.

[0039] Figure 25b is a drawing showing a rail of a female member according to a comparative example.

[0040] FIG. 26a is a drawing showing a rail of a female member according to one embodiment of the present disclosure.

[0041] FIG. 26b is a drawing showing a rail of a female member according to one embodiment of the present disclosure.

[0042] Throughout the attached drawings, similar reference numbers may be assigned to similar parts, components and / or structures.

[0043] A foldable electronic device may be configured such that some of the components included in the foldable electronic device rotate. For example, the foldable electronic device may include a first housing (e.g., a first housing (110) of FIG. 2, described below) and a second housing (e.g., a second housing (120) of FIG. 2, described below), and the first housing may be configured to rotate relative to the second housing. To achieve this, the foldable electronic device may include a hinge including a female rail and a male rail configured to interlock with each other.

[0044] In order to ensure the stability of the rails in a folded state, foldable electronic devices must have sufficient clearance between the female and male rails. As foldable electronic devices become slimmer, the thickness of the female and male rails may gradually decrease. However, if the thickness of the female and male rails decreases and the clearance between the female and male rails is insufficient, the durability of the hinge may be weakened. If the female and / or male rails are located at the edge of a component, the durability of the hinge becomes more vulnerable, and the edge may become the starting point of breakage.

[0045] The present disclosure provides a hinge including a reinforcing portion at the end of a rail to enhance the durability of the hinge included in a foldable electronic device, and a foldable electronic device including the hinge. The object of the present disclosure is not limited to the above-described object.

[0046] The following description of the accompanying drawings may provide an understanding of various exemplary implementations of the present disclosure, including the claims and their equivalents. While the exemplary embodiments disclosed in the following description include numerous specific details to aid understanding, they are to be considered as one example of various exemplary embodiments. Accordingly, those skilled in the art will appreciate that various modifications and variations of the various implementations described in this disclosure may be made without departing from the scope and spirit of the disclosure. Furthermore, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0047] The terms and words used in the following description and claims are not limited to their reference meanings and can be used to clearly and consistently describe one embodiment of the present disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various implementations of the disclosure is provided for illustrative purposes, not for the purpose of limiting the scope of the disclosure and its equivalents.

[0048] Unless the context clearly dictates otherwise, the singular forms of "a," "an," and "the" should be understood to include plural meanings. Thus, for example, "a component surface" could be understood to include one or more of the surfaces of the component.

[0049] FIG. 1 is a diagram illustrating a foldable electronic device (100) in an unfolded state according to one embodiment of the present disclosure. FIG. 2 is a diagram illustrating a foldable electronic device (100) in a folded state according to one embodiment of the present disclosure.

[0050] In the detailed description below, the length direction of the foldable electronic device (100) may be defined as the 'Y-axis direction', the width direction as the 'X-axis direction', and / or the height direction (thickness direction) as the 'Z-axis direction'. In the detailed description below, references to the length direction, width direction, and / or height direction (or thickness direction) may indicate the length direction, width direction, and / or height direction (or thickness direction) of the foldable electronic device.

[0051] Referring to FIGS. 1 and 2, according to one embodiment of the present disclosure, a foldable electronic device (100) may include a foldable housing (101), a hinge cover (130) covering a foldable portion of the foldable housing (101), and a flexible or foldable display (140) (hereinafter, simply “display (140)”) disposed in the foldable housing (101). According to one embodiment, a surface on which the display (140) is disposed is defined as a front surface of the foldable electronic device (100) (e.g., a first front surface (110a) and a second front surface (120a)). And, a surface opposite to the front surface is defined as a back surface of the foldable electronic device (100) (e.g., a first back surface (110b) and a second back surface (120b)). Additionally, the surface surrounding the space between the front and the back is defined as a side surface (e.g., a first side surface (111a) and a second side surface (121a)) of the foldable electronic device (100).

[0052] According to one embodiment of the present disclosure, the foldable housing (101) may include a first housing (110), a second housing (120) rotatably or pivotally coupled to the first housing (110), a first rear cover (180), a second rear cover (190), and a hinge (e.g., a hinge (150) of FIG. 3). The hinge (150) may provide at least one folding axis (F) that serves as a center of folding or unfolding of the foldable electronic device (100) of the first housing (110) and / or the second housing (120). According to one embodiment, the first housing (110) and the first rear cover (180) may be formed integrally, and the second housing (120) and the second rear cover (190) may be formed integrally. According to various embodiments, the first housing (110) is connected to a hinge (e.g., the hinge (150) of FIG. 3) and may include a first front surface (110a) perpendicular to the longitudinal direction (Y-axis direction) and the width direction (X-axis direction) of the foldable electronic device, and a first rear surface (110b) facing in an opposite direction to the first front surface. The second housing (120) may include a second front surface (120a) perpendicular to the longitudinal direction (Y-axis direction) and the width direction (X-axis direction) of the foldable electronic device, and a second rear surface (120b) facing in an opposite direction to the second front surface. Accordingly, the foldable electronic device (100) may be variable between a folded state and an unfolded state. Here, the folded state may be referred to as a closed state, and the unfolded state may be referred to as an opened state. In the foldable electronic device (100), the first front surface (110a) may face the second front surface (120a) in the folded state, and the direction in which the first front surface faces in the unfolded state may be substantially parallel to the direction in which the second front surface faces.In some embodiments, when the foldable electronic device (100) is between a folded state and an unfolded state, it may be defined as being in an intermediate state. In the following, unless otherwise stated, the direction is described based on the unfolded state of the foldable electronic device (100).

[0053] According to one embodiment of the present disclosure, the first housing (110) and the second housing (120) may be disposed on both sides with respect to the folding axis (F). For example, the first housing (110) and the second housing (120) may have shapes that are substantially symmetrical with respect to the folding axis (F). As described below, the angle or distance between the first housing (110) and the second housing (120) may vary depending on whether the foldable electronic device (100) is in an unfolded state, a folded state, or an intermediate state. According to one embodiment of the present disclosure, unlike the first housing (110), the second housing (120) additionally includes a sensor area (124) in which various sensors (e.g., a front camera) are disposed, but may have a shape symmetrical with respect to the first housing (110) in other areas. According to one embodiment, the folding axis (F) may be composed of a plurality of parallel folding axes (e.g., two). In the present disclosure, the folding axis (F) is provided along the longitudinal direction (Y-axis direction) of the foldable electronic device (100), but the direction of the folding axis (F) is not limited thereto.

[0054] According to one embodiment of the present disclosure, the foldable electronic device (100) may include a structure into which a digital pen can be inserted. For example, a hole (123) into which the digital pen can be inserted may be formed on a side of the first housing (110) or a side of the second housing (120) of the foldable electronic device (100).

[0055] According to one embodiment of the present disclosure, at least a portion of the first housing (110) and the second housing (120) may be formed of a metallic or non-metallic material having a rigidity of a size selected to support the display (140). At least a portion formed of the metallic material may provide a ground plane of the foldable electronic device (100) and may be electrically connected to a ground conductor provided on a printed circuit board.

[0056] According to one embodiment of the present disclosure, the sensor area (124) may be formed to have a predetermined area adjacent to one corner of the second housing (120). However, the arrangement, shape, and size of the sensor area (124) are not limited to the illustrated example. For example, in one embodiment, the sensor area (124) may be provided in another corner of the second housing (120), an arbitrary area between the upper corner and the lower corner, or in the first housing (110). According to one embodiment, components for performing various functions built into the foldable electronic device (100) may be visually exposed to the front of the foldable electronic device (100) through the sensor area (124) or through one or more openings provided in the sensor area (124). In various embodiments, the components may include various types of sensors. The sensor may include, for example, at least one of a front camera, a receiver, or a proximity sensor.

[0057] According to one embodiment of the present disclosure, the first rear cover (180) is disposed on one side of the folding axis (F) on the rear surface of the foldable electronic device (100) and may have, for example, a substantially rectangular periphery, and the periphery may be wrapped by the first housing (110). Similarly, the second rear cover (190) is disposed on the other side of the folding axis (F) on the rear surface of the foldable electronic device (100) and the periphery may be wrapped by the second housing (120).

[0058] According to one embodiment of the present disclosure, the first rear cover (180) and the second rear cover (190) may have substantially symmetrical shapes with respect to the folding axis (F). However, the first rear cover (180) and the second rear cover (190) do not necessarily have mutually symmetrical shapes, and in one embodiment, the foldable electronic device (100) may include the first rear cover (180) and the second rear cover (190) of various shapes.

[0059] According to one embodiment of the present disclosure, the first rear cover (180), the second rear cover (190), the first housing (110), and the second housing (120) may form a space in which various components (e.g., a printed circuit board or a battery) of the foldable electronic device (100) may be placed. According to one embodiment, one or more components may be placed or visually exposed on the rear surface of the foldable electronic device (100). For example, at least a portion of the sub-display may be visually exposed through the first rear plate (182) of the first rear cover (180). In one embodiment, one or more components or sensors may be visually exposed through the second rear plate (192) of the second rear cover (190). In various embodiments, the sensor may include a proximity sensor and / or a camera module (106) (e.g., a rear camera).

[0060] According to one embodiment of the present disclosure, a front camera visually exposed to the front of the foldable electronic device (100) through one or more openings provided in the sensor area (124) or a camera module (106) visually exposed through the second rear area (192) of the second rear cover (190) may include one or more lenses, image sensors, and / or image signal processors. In some embodiments, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be disposed on one side of the foldable electronic device (100).

[0061] Referring to FIG. 2, according to one embodiment of the present disclosure, the hinge cover (130) may be disposed between the first housing (110) and the second housing (120) to cover at least a portion of an internal component (e.g., the hinge (150) of FIG. 3). According to one embodiment, the hinge cover (130) may be covered by a portion of the first housing (110) and the second housing (120) or exposed to the outside, depending on the state of the foldable electronic device (100) (flat state or folded state). For example, in the unfolded state, the hinge cover (130) may be substantially covered by the first housing (110) and the second housing (120), and in the folded state, most of the outer surface of the hinge cover (130) may be exposed to the outside. The hinge cover (130) can have the first housing (110) and the second housing (120) arranged on both sides (lateral sides).

[0062] According to one embodiment, as illustrated in FIG. 1, when the foldable electronic device (100) is in an unfolded state, the hinge cover (130) may be covered by the first housing (110) and the second housing (120) and may not be exposed. According to one embodiment, as illustrated in FIG. 1, when the foldable electronic device (100) is in a folded state (e.g., a fully folded state), the hinge cover (130) may be exposed to the outside between the first housing (110) and the second housing (120). According to one embodiment, when the first housing (110) and the second housing (120) are in an intermediate state where they are folded at a certain angle, the hinge cover (130) may be partially exposed to the outside between the first housing (110) and the second housing (120). However, in this case, the exposed area may be less than in the fully folded state. In one embodiment, the hinge cover (130) may include a curved surface.

[0063] According to one embodiment of the present disclosure, the display (140) may be disposed in the foldable housing (101). The display (140) may be disposed in the first housing (110) and the second housing (120). For example, the display (140) may be mounted on a recess formed by the foldable housing (101) and may form at least a portion of the front surface of the foldable electronic device (100). Accordingly, the front surface of the foldable electronic device (100) may include the display (140) and a portion of the first housing (110) adjacent to the display (140) and a portion of the second housing (120). The rear surface of the foldable electronic device (100) may include a first rear cover (180), a portion of a first housing (110) adjacent to the first rear cover (180), a second rear cover (190), and a portion of a second housing (120) adjacent to the second rear cover (190).

[0064] According to one embodiment of the present disclosure, the display (140) may refer to a display in which at least a portion of the display can be transformed into a flat or curved surface. According to one embodiment, the display (140) may include a folding area (143), a first display area (141) arranged on one side (e.g., the left side of the folding area (143) illustrated in FIG. 1) with respect to the folding area (143), and a second display area (142) arranged on the other side (e.g., the right side of the folding area (143) illustrated in FIG. 1). The division of the areas of the display (140) is exemplary, and the display (140) may be divided into a plurality of areas (e.g., four or more or two) depending on the structure or function.

[0065] According to one embodiment of the present disclosure, a foldable electronic device (100) may include a display (140) including a first region (141) disposed in the first housing (110), a second region (142) disposed in the second housing (120), and a flexible third region (143) connecting the first region (141) and the second region (142). The first display region (141), the second display region (142), and the folding region (143) of the foldable display (140), as described above, may be referred to as the first region (141), the second region (142), and the third region (143) of the foldable display (140).

[0066] According to one embodiment of the present disclosure, the display (140) may be coupled to or disposed adjacent to a touch sensing circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a digitizer (not shown) configured to detect a magnetic field type stylus pen.

[0067] According to one embodiment of the present disclosure, the first display area (141) and the second display area (142) may have an overall symmetrical shape centered on the folding area (143). According to one embodiment (not shown), the second display area (142), unlike the first display area (141), may include a cut notch depending on the presence of the sensor area (124), but may have a shape symmetrical with respect to the first display area (141) in other areas. In other words, the first display area (141) and the second display area (142) may include a portion having a symmetrical shape with respect to each other and a portion having an asymmetrical shape with respect to each other.

[0068] Hereinafter, the operation of the first housing (110) and the second housing (120) and each area of ​​the display (140) according to the state of the foldable electronic device (100) (e.g., flat state or unfolded state and folded state) will be described.

[0069] According to one embodiment of the present disclosure, when the foldable electronic device (100) is in an unfolded state (see FIG. 1), the first housing (110) and the second housing (120) may be arranged to form a substantially 180-degree angle and the first display area (141) and the second display area (142) may face substantially the same direction. For example, in the unfolded state, the surface of the first display area (141) and the surface of the second display area (142) may form a 180-degree angle with each other and face the same direction (e.g., toward the front of the foldable electronic device). The folding area (143) may form the same plane as the first display area (141) and the second display area (142).

[0070] According to one embodiment of the present disclosure, when the foldable electronic device (100) is in a folded state, the first housing (110) and the second housing (120) may be arranged to face each other. The surface of the first display area (141) of the display (140) and the surface of the second display area (142) may form a narrow angle (e.g., between 0 and 10 degrees) with each other and may substantially face each other. The folding area (143) may be formed as a curved surface having at least a portion of a predetermined curvature.

[0071] According to one embodiment of the present disclosure, when the foldable electronic device (100) is in an intermediate state (folded state) (not shown), the first housing (110) and the second housing (120) may be arranged at a certain angle with respect to each other. The surface of the first display area (141) of the display (140) and the surface of the second display area (142) may form an angle that is larger than the angle in the folded state and smaller than the angle in the unfolded state. The folding area (143) may be formed as a curved surface having at least a certain curvature, and the curvature at this time may be smaller than that in the folded state.

[0072] FIG. 3 is an exploded perspective view showing a flexible display (140) disassembled from a housing (110, 120) according to one embodiment of the present disclosure.

[0073] In some embodiments, with respect to the direction in which a component is oriented, 'yin / yang (- / +)' may be mentioned together with the orthogonal coordinate system illustrated in the drawing. For example, referring to FIG. 3, the front of the foldable electronic device (100) or the housing (101) may be defined as a 'side facing the +Z-axis direction', and the rear may be defined as a 'side facing the -Z-axis direction'. According to one embodiment, the arrangement relationship in the height direction of a component or another component, for example, the reference for up / down, may be based on the +Z-axis direction / -Z-axis direction. For example, when a component is arranged on another component, it may mean that a component is arranged on the +Z-axis direction with respect to the other component, and when a component is arranged under another component, it may mean that a component is arranged on the -Z-axis direction with respect to the other component. Meanwhile, it should be noted that even if a component is positioned above or below another component, it does not mean that the entire component is positioned above or below the entire components of the other component. For example, a part of a component may be positioned above a part of another component, but another part of the component may be positioned below a part of the other component. In one embodiment, when a component is said to be “viewed from above,” this may mean looking at the component from the +Z-axis direction toward the -Z-axis direction from a place spaced apart from the component by a predetermined distance. In addition, in one embodiment, when a component is said to be “viewed in the width direction of the foldable electronic device,” this may mean looking at the component from the -X-axis direction toward the +X-axis direction from a place spaced apart from the component by a predetermined distance.In one embodiment, when a component is said to be 'oriented in a certain direction', it can be understood that the component is oriented not only in the 'same direction as the certain direction' but also in the 'direction parallel to the certain direction'. In the description of the direction, if 'yin / yang (- / +)' is not described, it can be interpreted to include both the + direction and the - direction unless defined separately. For example, 'Z-axis direction' can be interpreted to include both the +Z direction and the -Z direction. Hereinafter, in the description that follows, 'first direction' can mean -Y-axis direction, and 'second direction' can mean +Y-axis direction. It should be noted that the above description is based on the rectangular coordinate system described in the drawings for the sake of brevity of description, and the description of such directions or components does not limit the various embodiments of the present disclosure.

[0074] Referring to FIG. 3, according to one embodiment of the present disclosure, a first region (141) of the display (140) may be supported by a first housing (110). A second region (142) of the display (140) may be supported by a second housing (120). A third region (143) of the display (140) may be supported by a hinge (150). In addition or alternatively, the third region (143) of the display (140) may be supported by a wing plate (600). According to one embodiment, the wing plate (600) may include a pair of wing plates (610, 620), each of which may be configured to support a first housing (110) and a second housing (120) with a hinge (150) therebetween.

[0075] In one embodiment, the hinge (150) can be connected to the first housing (110) and the second housing (120). In one embodiment, the first housing (110) can rotate with respect to the second housing (120) using the hinge (150). For example, the first housing (110) can rotate around an axis parallel to the longitudinal direction of the foldable electronic device, and the second housing (120) can rotate around another axis parallel to the axis about which the first housing (110) rotates. In one embodiment, the hinge (150) can rotatably connect the first housing (110) and the second housing (120) from a folded state (e.g., FIG. 2) to an unfolded state (e.g., FIG. 1), or vice versa, and can provide an axis about which the first housing (110) and the second housing (120) rotate.

[0076] According to one embodiment, the hinge (150) may include a plurality of hinges (151, 152, 153) arranged in parallel. For example, the hinge (150) may include a first hinge (151) positioned below the foldable housing and a second hinge (152) positioned above the foldable housing when the foldable electronic device (100) is viewed from above. According to one embodiment, the first hinge (151) may be symmetrical with respect to an imaginary line drawn in the width direction (e.g., X-axis direction) of the foldable electronic device (100) with respect to the second hinge (152). According to one embodiment, the foldable electronic device (100) may further include a third hinge (153) arranged between the first hinge (151) and the second hinge (152).

[0077] According to one embodiment, the foldable electronic device (100) may further include a support bar (160) arranged along a folding axis (e.g., the folding axis (F) of FIG. 1) between the first hinge (151) and the second hinge (152). According to one embodiment, the support bar (160) may include a plurality of support bars (161, 162), and the plurality of support bars (161, 162) may be arranged between the first hinge (151), the second hinge (152), and the third hinge (153).

[0078] Hereinafter, in describing a foldable electronic device (100) including a hinge (150) of the present disclosure, the description may be centered on the first hinge (151), and the description of the first hinge (151) may be applied to the second hinge (152) and / or the third hinge (153).

[0079] Fig. 4 is a cross-sectional view taken along the line A-A' of the foldable electronic device of Fig. 1. Fig. 5 is a cross-sectional view taken along the line B-B' of the foldable electronic device of Fig. 2. Fig. 4 may disclose a cross-sectional view of the foldable electronic device (100) in an unfolded state, and Fig. 5 may disclose a cross-sectional view of the foldable electronic device (100) in a folded state. The components described in the above-described embodiments may be omitted below.

[0080] Referring to FIG. 4, the foldable electronic device (100) may include a hinge space (HS) in which various elements constituting the hinge (150) are arranged. The hinge space (HS) may be defined between the flexible display (140) between the first housing (110) and the second housing (120) and between the rear plates (182, 192) of the first housing (110) and the second housing (120).

[0081] For example, the components of the hinge (150) included in the hinge space (HS) may include a rotation member (200) and a wing plate (600). The rotation member (200) may include a first rotation member (210), a second rotation member (220), and a rotation bracket (230) that rotatably supports the first rotation member (210) and the second rotation member (220). According to one embodiment, when the foldable electronic device (100) is unfolded, the first rotation member (210) may be disposed between the flexible display (140) and the first rear plate (182), and the second rotation member (210) may be disposed between the flexible display (140) and the second rear plate (192). In addition to these, the hinge (150) may further include other components such as an arm member, a cam member, and a connecting member, but the other components will be described in detail later in the embodiment of FIG. 6. According to one embodiment, only the components of the rotating member (200), the arm member, the cam member, and the connecting member, excluding the wing plate (600), may be referred to as a hinge.

[0082] The wing plate (600) is a component having an overall flat shape, and can support a portion (e.g., a reverse curvature portion) of the flexible display (140) when the electronic device (100) changes from one of a folded state, an intermediate state between a folded state and an unfolded state, and an unfolded state to another state. According to one embodiment, the wing plate (600) may be configured to be arranged on one surface of the rotation member (200) and to be slidably moved while maintaining parallel to the one surface of the rotation member (200). The wing plate (600) may include a first wing plate (610) and a second wing plate (620), and the first wing plate (610) may be arranged to cover at least a portion of the first rotation member (210), and the second wing plate (620) may be arranged to cover at least a portion of the second rotation member (220). According to another embodiment, the first wing plate (610) may be arranged to cover not only the first rotation member (210) but also at least a portion of an arm member (e.g., the 1-1 arm member (410), the 1-2 arm member (430) described below), and the second wing plate (620) may be arranged to cover not only the second rotation member (220) but also at least a portion of another arm member (e.g., the 2-1 arm member (420), the 2-2 arm member (440)).

[0083] The first rotation member (210) and the second rotation member (220) may be configured to be rotatable with respect to the rotation bracket (230), respectively. In one embodiment, the first rotation member (210) and the second rotation member (220) may be rotatable in conjunction with each other with respect to the rotation bracket (230).

[0084] Referring to FIGS. 4 and 5, the first rotation member (210) and the second rotation member (220) may be configured to rotate around two different axes (the first axis (Ax1), the second axis (Ax2)). Here, the two axes (the first axis (Ax1), the second axis (Ax2)) that serve as a reference for the rotation of the first rotation member (210) and the second rotation member (220) may not be real axes about which a component rotates around the two axes (the first axis (Ax1), the second axis (Ax2)), but may be virtual axes.

[0085] The first rotation member (210) and the second rotation member (220) may be coupled in a form in which the rail structures are interlocked with the rotation bracket (230), respectively. Referring to FIG. 4, the first rail (211) of the first rotation member (210) is configured to interlock with the rail (233) of the rotation bracket (230), and the second rail (221) of the second rotation member (220) is configured to interlock with the other rail (235) of the rotation bracket (230). According to one embodiment, the rail structure may be formed in a crescent rail shape. This shape of the rail structure may be essential in the case of a foldable electronic device (100) in which the flexible display (140) is placed directly above the hinge (150) and in order to accommodate changes in the length of the flexible display (140).

[0086] As shown in FIG. 4, when the foldable electronic device (100) is in an unfolded state (e.g., a fully unfolded state), the first rail (211) of the first rotational member (210) can be maximally engaged with the rail (233) of the rotational bracket (230), and the second rail (221) of the second rotational member (220) can be maximally engaged with the other rail (235) of the rotational bracket (230). As shown in FIG. 5, when the foldable electronic device (100) is in a folded state (e.g., a fully folded state), the first rail (211) of the first rotational member (210) can be minimally engaged with the rail (233) of the rotational bracket (230), and the second rail (221) of the second rotational member (220) can be minimally engaged with the other rail (235) of the rotational bracket (230). According to one embodiment, when the foldable electronic device (100) is in an unfolded state (e.g., a fully unfolded state), the rails (211, 221) of the first rotation member (210) and the second rotation member (220) are maximally engaged with the rails of the rotation bracket (230), which can be expressed as “the largest amount of engagement when closed.”

[0087] As illustrated in FIGS. 4 and 5, when designing the hinge (150), in order to withstand the load applied when the first rotation member (210) and the second rotation member (220) rotate with respect to the rotation bracket (230), it may be advantageous to make the rail structure thicker and the amount of engagement when closing larger. However, the thicker the rail structure and the greater the amount of engagement when closing, the more advantageous it may be to design the foldable electronic device (100) to be slimmer. As for the foldable electronic device (100), there may be various demands related to slimming, such as reducing the thickness (H1) of the foldable electronic device (100) when it is unfolded, as illustrated in FIG. 4, or reducing the thickness (W1) of the foldable electronic device (100) when it is folded, as illustrated in FIG. 5. There may also be a demand to reduce the thickness (D1) of the hinge cover (130) exposed to the outside of the housing when folded. One of various methods to meet such a demand may be to thin the thickness of the rail structure, or additionally or alternatively, to take a method of reducing the amount of interference when closing. That is, if the foldable electronic device (100) is made slim, the thickness of the rail structure may be thinned, or the amount of interference when closing may be reduced. If the thickness of the rail structure is thinned, or the amount of interference when closing is reduced, the rigidity of the rail structure and / or the area surrounding the rail structure may be weakened, which may reduce the durability of the hinge.

[0088] The above-described behavior and its problems can be similarly applied to the female member included in the hinge (150) and the cam member coupled with the female member.

[0089] According to the present disclosure, various embodiments of a foldable electronic device including a hinge and the same can be disclosed, in which durability is increased by increasing the rigidity of the rail structure and / or the periphery of the rail structure without reducing the thickness of the rail structure or reducing the amount of interference when closed.

[0090] FIG. 6 is an exploded perspective view of a hinge according to one embodiment of the present disclosure.

[0091] Referring to FIG. 6, the hinge (150) may include a rotation member (200), a connecting member (300), an arm member (400), and a cam member (500).

[0092] The rotating member (200) is a component that can rotate around an axis, and can implement and / or guide the rotational motion of the first housing (110) and / or the second housing (120) by rotating the rotating member (200). According to one embodiment, the rotating member (200) may include a first rotating member (210) that rotates along one axis (the first axis (Ax1)) to implement the rotational motion of the first housing (110), and a second rotating member (220) that is spaced apart from the first rotating member (210) and rotates along another axis (the second axis (Ax2)) to implement the rotational motion of the second housing (120). In addition, the rotating member (200) may include a rotation bracket (230) to which the first rotating member (210) and the second rotating member (220) are coupled so that they can each rotate.

[0093] The first rotation member (210) may include a first rail (211), and the second rotation member (220) may include a second rail (221). The rotation bracket (230) may include a body (231) and a plurality of rails (233, 235) formed by protruding and / or extending from the body (231). Some of the rails (233) among the plurality of rails (233, 234) of the rotation bracket (230) may be engaged with the first rail (211) of the first rotation member (210), and other rails (235) may be engaged with the second rail (221) of the second rotation member (220).

[0094] The connecting member (300) is a component including a guide rail, and may be configured to connect the rotating member (200) and the arm member (400) on one side. According to one embodiment, the other side of the connecting member (300) may be configured to support a support member included in the foldable electronic device (100). For example, the connecting member (300) may be a component that is relatively long in the longitudinal direction (e.g., Y-axis direction) of the electronic device, relatively short in the width direction (e.g., X-axis direction) of the electronic device, and relatively thin in the height direction (e.g., Z-axis direction) of the electronic device. According to one embodiment, the supporting member (e.g., bracket) of the foldable electronic device may be coupled to the lower surface, and the rotating member (200) and the arm member (400) may be configured to be fitted and move along the width direction (e.g., X-axis direction) of the electronic device on the upper surface. When the rotating member (200) and the female member (400) are coupled to the connecting member (300), the rotating member (200) and the connecting member (300) can be arranged substantially on the same plane and parallel to each other in the longitudinal direction (e.g., Y-axis direction) of the electronic device.

[0095] The arm member (400) is a component including a cam shape and can be configured to rotate in response to rotation about an axis (e.g., a first axis (Ax1), a second axis (Ax2)) of the rotating member (200). According to one embodiment, the arm member (400) can have the same axis as the axis (e.g., a first axis (Ax1), a second axis (Ax2)) of the rotating member (200). Alternatively, the arm member (400) can rotate about a linkage axis (e.g., a real axis not shown in the drawing) that is parallel to the same axis as the axis (e.g., a first axis (Ax1), a second axis (Ax2)) of the rotating member (200). According to one embodiment, the electronic device (100) can perform a detent behavior in which the first housing (110) and the second housing (120) stop at a predetermined angle with respect to each other by the arm member (400). For example, the arm member (400) can cause the first housing (110) and the second housing (120) to maintain their state at a certain specific angle, and at this time, the cam of the arm member (400) can function as a resistance element that does not allow rotation unless an external force (e.g., a detent force) greater than a predetermined value is applied.

[0096] According to one embodiment, the connecting member (300) may include a first connecting member (310) and a second connecting member (320). The arm member (400) may include a first arm member (A1) and a second arm member (A2). The first connecting member (310) may connect the first rotation member (210) and the first arm member (A1), and the second connecting member (320) may connect the second rotation member (220) and the second arm member (A2). According to one embodiment, the first arm member (A1) and the second arm member (A2) included in the arm member (400) may be engaged and coupled to the cam member (500), respectively. When a user applies an external force exceeding a preset value to fold the foldable electronic device (100), the arm member (400) can be released from its engagement with the cam member (500) to allow rotation of the first housing (110) and / or the second housing (120), and when no external force is applied or an external force less than a preset value is applied, the engagement between the arm member (400) and the cam member (500) is maintained to keep the first housing (110) and / or the second housing (120) stationary.

[0097] According to one embodiment, the first connecting member (310) may include a first body (311) and two guide rails (312, 313) formed on the first body (311). The first connecting member (310) may be coupled to the first rotation member (210) through the first guide rail (312) and coupled to the first arm member (A1) through the second guide rail (313). According to one embodiment, the first guide rail (312) may be engaged with the first sub-rail (212) of the first rotation member (210), and the second guide rail (313) may be engaged with the third sub-rail (the third sub-rail (412) of FIG. 20, which will be described later) of the first arm member (A1). According to one embodiment, the second connecting member (320) may include two guide rails (322, 323) formed on the second body (321). The second connecting member (320) may be coupled to the second rotation member (220) through the third guide rail (322) and coupled to the second arm member (A2) through the fourth guide rail (323). According to one embodiment, the third guide rail (322) may be engaged with the second sub-rail (222) of the second rotation member (220), and the fourth guide rail (323) may be engaged with the fourth sub-rail of the second arm member (A2). The first guide rail (312), the second guide rail (313), the third guide rail (322), and the fourth guide rail (323) may correspond in shape and length to the first sub-rail, the second sub-rail, the third sub-rail, and the fourth sub-rail to which they are engaged. In addition, the concave direction (or convex direction) of each guide rail may be set in various ways depending on the embodiment.

[0098] According to one embodiment, the rotation bracket (230) may further include an extension bracket (232) that may be formed integrally with or separate from the body (231). A guide hole (h) formed long along the longitudinal direction (Y-axis direction) of the foldable electronic device (100) is formed in the extension bracket (232), and a portion of a slider portion (240) configured to move along the longitudinal direction (Y-axis direction) of the foldable electronic device (100) while supporting the cam member (500) on one side may be coupled to the guide hole (h).

[0099] According to one embodiment, the first arm member (A1) may include a 1-1 arm member (410) and a 1-2 arm member (430) that is positioned relatively further from the first rotation member (210) than the 1-1 arm member (410). The 1-1 arm member (410) and the 1-2 arm member (430) may be provided in a separate state and may be coupled to move together. The second arm member (A2) may include a 2-1 arm member (420) and a 2-2 arm member (440) that is positioned relatively further from the second rotation member (220) than the 2-1 arm member (420). In response to this, the cam member (500) includes a first cam member (510) and a second cam member (520), wherein the first cam member (510) can be configured to engage with the 1-1 arm member (410) and the 2-1 arm member (420), and the second cam member (520) can be configured to engage with the 1-2 arm member (430) and the 2-2 arm member (440).

[0100] According to one embodiment, the slider portion (240) may be provided to link a rotational motion with respect to at least one of the first housing (e.g., the first housing (110) of FIGS. 1 to 5) and the second housing (e.g., the second housing (120) of FIGS. 1 to 5) when a rotational motion is implemented for the other housing. For example, when a user attempts to rotate the first housing (110) by applying force only to the first housing (110) after gripping it with his / her hand, the slider portion (240) may cause the second housing (120) to rotate at the same rotational motion as the rotational motion of the first housing (110). For example, the slider portion (240) may be configured to be connected to the first arm member (A1) and the second arm member (A2), respectively, and when one of the first arm member (A1) and the second arm member (A2) rotates, the rotation of the other may be linked with the sliding motion of the slider portion (240).

[0101] According to one embodiment, the cam member (500) may be elastically supported along the longitudinal direction of the foldable electronic device (100) by at least one elastic element (e.g., a spring). According to one embodiment, when the foldable electronic device (100) includes a first cam member (510) and a second cam member (520), the elastic elements may also include a first elastic element (S1) supporting the first cam member (510) and a second elastic element (S2) supporting the second cam member (520). According to one embodiment, the cams included in the arm member (400) and the cam member (500) may maintain a firmly folded state while the elastic elements continue to apply a force that pushes the cams when the electronic device is in a folded state. In addition, the cams included in the arm member (400) and the cam member (500) may maintain a partially unfolded state on their own within a specific angular range when in an intermediate state between a folded state and an unfolded state. Additionally, the cams included in the arm member (400) and the cam member (500) can be firmly maintained in an unfolded state through the force of the elastic element continuously pushing the cams when in an unfolded state. Through such behavior, the free stop function (e.g., flex mode) of the foldable electronic device (100) can be implemented.

[0102] According to one embodiment, the hinge (150) may further include components such as a gear member (e.g., including a linkage gear), a gear bracket, and a fastening member (e.g., a bolt and / or a screw) in addition to the components illustrated in FIG. 6. However, it should be noted that the present invention is not necessarily limited thereto, and some of the above components may be omitted depending on the embodiment. For example, when the hinge (150) includes a slider member (240) described below, the linkage gear may be omitted.

[0103] The rotating member (200), connecting member (300), arm member (400), and cam member (500) included in the hinge (150) will be described in more detail through the drawings below in FIG. 7.

[0104] According to one embodiment of the present disclosure, a hinge (150) may be provided with a plurality of components for driving the hinge (150), each paired, and may be arranged symmetrically left / right (or up / down) with respect to an imaginary line passing through the center of the electronic device in the width direction. For example, a first rotation member (210) and a second rotation member (220), which are components for driving the hinge (150), may have substantially the same configuration and may be provided symmetrically left / right on one side and the other side with respect to a folding axis (e.g., the folding axis (F) of FIG. 1). The description of the first rotation member (210) may be applied to the second rotation member (220), which is a symmetrical component. The description of components arranged symmetrically left and right with respect to the folding axis (e.g., the folding axis (F) of FIG. 1) can be similarly applied to the description of other components included in the hinge (150) (e.g., the first connecting member (310), the second connecting member (320), the first arm member (A1), the second arm member (A2)). In the following description of components symmetrically provided left and right, the description of one component can be applied to the description of another component symmetrical thereto even if there is no separate mention. For example, the description of the first rotating member (210) can be applied to the second rotating member (220). In addition, the description of the first connecting member (310) can be applied to the second connecting member (320). In addition, the description of the first arm member (410) can be applied to the second arm member (420). The first cam member (510) and the second cam member (520) may be symmetrically arranged up and down with respect to an imaginary line parallel to the width direction of the foldable electronic device (100). The description of the first cam member (510) may be applied to the description of the second cam member (520).

[0105] Fig. 7 is a perspective view of a first rotation member (210) according to one embodiment. Fig. 8 is a drawing showing a top view of the first rotation member (210) according to one embodiment.

[0106] Referring to FIG. 7, a rotational member (e.g., a first rotational member (210)) may include two moving elements (e.g., a first rail (211) and a first sub-rail (212)). For example, when a surface of the first rotational member (210) facing the +Z-axis direction is referred to as an upper surface (210c), the first rotational member (210) may include two rails (e.g., a first rail (211) and a first sub-rail (212)) on a surface (e.g., a first side surface (210a)) facing the first direction (-Y-axis direction). Here, the first direction (-Y-axis direction) may be parallel to the longitudinal direction (Y-axis direction) of the foldable electronic device. According to one embodiment, the first rotation member (210) may also have a first rail (211) and a first sub-rail (212) formed on a surface (e.g., a second side surface (210b)) facing a second direction (Y-axis direction) opposite to the first direction. The first rail (211) disposed on the first side surface (210a) may have the same structure as the first rail (211) disposed on the second side surface (210b) except for a different direction, and the first sub-rail (212) disposed on the first side surface (210a) may have the same structure as the first sub-rail (212) disposed on the second side surface (210b) except for a different direction. According to one embodiment, the first rail (211) in the hinge (150) may be arranged closer to the folding axis (e.g., the folding axis (F) of FIG. 1) than the first sub-rail (212). According to one embodiment, the first rail (211) and the first sub-rail (212) may have a concave crescent rail shape toward the +Z-axis direction. However, the first sub-rail (212) may also have a concave crescent rail shape toward another direction, for example, the -Z-axis direction, depending on the embodiment. According to one embodiment, the first rail (211) and the first sub-rail (212) may be configured in the shape of an arc when viewed in the longitudinal direction (Y-axis direction) of the electronic device.According to one embodiment, the first end (211a), which is one end point of the first rail (211), and the second end (211b), which is the other end point, may be parallel to each other. According to one embodiment, the second end (211b) may be referred to as an “inner end (211b) of the first rail (211)” because it is located at the center of the first rotation member (210), and the first end (211a) may be referred to as an “outer end (211b) of the first rail (211)” because it is located at the edge of the first rotation member (210).

[0107] The first rail (211) is engaged with a part of the rail (233) of the rotation bracket (230) illustrated in FIG. 6, and can rotate around a first axis (e.g., the first axis (Ax1) of FIG. 4). The second rail (211) can be engaged with a first guide rail (312) of the first connecting member (310) illustrated in FIG. 6. According to one embodiment, the first rotation member (210) may include a first mounting surface (213), which is a surface facing the first wing plate (610) of FIG. 4. According to one embodiment, the first mounting surface (213) may be formed to be parallel to an upper surface (210c) facing the +Z-axis direction and have a predetermined step from the upper surface (210c). At least a portion of the first wing plate (610) can be mounted on the first mounting surface (213).

[0108] According to one embodiment, the first rotation member (210) may include a first rib (211c) positioned in the direction of the rotation center of the first rail (211) on the first side (210a) and the second side (210b), respectively, and a second rib (211d) surrounding the first rail (211). According to one embodiment, the first rib (211c) and the second rib (211d) of the first rotation member (210) may have a shape that protrudes in the longitudinal direction (Y-axis direction) of the foldable electronic device (100) with respect to the first rail (211). According to one embodiment, the first rail (211) of the first rotation member (210) may have a recess shape formed in a negative shape. The first rail (211) formed in a negative shape may be referred to as a “first negative rail (211).”

[0109] Referring to FIG. 8, the first rotation member (210) may have a structure in which the length in the width direction (X-axis direction) of the foldable electronic device (100) is long and the length in the length direction (Y-axis direction) of the foldable electronic device (100) is relatively short. In addition, the first rotation member (210) may have a stepped shape between the portion where the first rail (211) is arranged and the portion where the first sub-rail (212) is arranged on the first side (210a). As illustrated in FIG. 8, when the first rotation member (210) has a stepped shape, the inner end (211b) of the first rail (211) may be formed at a position where the first rotation member (210) is bent, in other words, at a neck (N) or an intersection point.

[0110] According to one embodiment, the first rotation member (210) can be divided into a first portion (S1) and a second portion (S2) along the longitudinal direction (X-axis direction) of the first rotation member (210). According to one embodiment, a first rail (211) can be formed in the first portion (S1), and a first sub-rail (212) can be formed in the second portion (S2). Referring to FIG. 8, when the first rotation member (210) is viewed from above, the first portion (S1) of the first rotation member (210) can have a bent shape so as to be stepped in the first direction and the second direction with respect to the second portion (S2) of the first rotation member. And a neck (N) portion of the first rotating member (210) is formed between the first part (S1) and the second part (S2), and the inner end (211b) of the first rail (211) can be placed on the neck portion.

[0111] FIG. 9 is a drawing showing a first rotation member (210) and a second rotation member (220) coupled to a rotation bracket and a connecting member according to one embodiment of the present disclosure.

[0112] According to one embodiment, when the first rotation member (210) and the second rotation member (220) are viewed from above, the first portion (S1) of each of the first rotation member (210) and the second rotation member (220) may be formed to be bent so as to be stepped in the first direction (-Y-axis direction) and the second direction (_+Y-axis direction) with respect to the second portion (S2) of each of the first rotation member (210) and the second rotation member (220).

[0113] Referring to FIG. 9, the rotation bracket (230) supports the first portion (S1) of the first rotation member (210) and the second rotation member (220), and the connecting member (300) can support the second portion (S2) of the first rotation member (210) and the second rotation member (220). According to one embodiment, the first connecting member (310) is configured to support the second portion (S2) of the first rotation member (210), and the second connecting member (320) is configured to support the second portion (S2) of the second rotation member (220).

[0114] According to one embodiment, when the rotation bracket (230) is viewed from above, the first part (S1) of the first rotation member (210) and the second part (S2) of the second rotation member (220) may be arranged to be staggered relative to the center of the body (231) of the rotation bracket (230).

[0115] Referring to FIGS. 7 to 9 described above, the first rotation member (210) may be formed such that the first part (S1) and the second part (S2) are stepped relative to each other and the neck (N) portion is bent. In addition, the first part (S1) of the first rotation member (210) may be supported by the rotation bracket (230), and the second part (S2) may be supported by the rotation bracket (230) and another component (e.g., the first connecting member (310)). In this structure, when bending occurs in the first rotation member (210) due to twisting, the neck (N) portion may be easily broken. The present disclosure may provide various embodiments for increasing the durability of such a vulnerable first rotation member (210).

[0116] FIG. 10 is a drawing showing a state in which a first rotation member, a second rotation member, and a rotation bracket are coupled according to one embodiment of the present disclosure. FIG. 11 is a drawing showing a first rotation member coupled to a rotation bracket according to one embodiment of the present disclosure. FIG. 12 is a drawing showing a rotation bracket coupled to a first rotation member according to one embodiment of the present disclosure.

[0117] Referring to FIGS. 10 to 12, the shapes of the rails included in the first rotation member (210), the second rotation member (220), and the rotation bracket (230) will be described in more detail. The embodiments of FIGS. 10 to 12 may illustrate the shapes of the rails included in the first rotation member (210), the second rotation member (220), and the rotation bracket (230) when the foldable electronic device (100) is folded. FIG. 10 may illustrate a front view of the hinge (150) when viewed in a second direction (+Y-axis direction), and FIGS. 11 and 12 may illustrate perspective views of the hinge (150) when viewed in a first direction (-Y-axis direction). FIG. 11 may be a projection view of the first rotation member coupled to the rotation bracket, and FIG. 12 may be a projection view of the rotation bracket coupled to the first rotation member.

[0118] Referring to FIG. 10, the arc lengths of the first rail (211) of the first rotation member (210) and the second rail (221) of the second rotation member (220) may be the same. According to one embodiment, the arc lengths of the first rail (211) of the first rotation member (210) and the second rail (221) of the second rotation member (220) may be longer than the arc lengths of the rails formed in the rotation bracket (230).

[0119] According to one embodiment, the first rail (211) of the first rotating member (210) may be formed negatively, and may be a "first negative rail (211)". The second rail (221) of the second rotating member (210) may also be formed negatively, and may be a "second negative rail (221)". Correspondingly, in the rotating bracket (230), the rail that engages with the first negative rail (211) may be formed positively, and may be referred to as a "first positive rail (233)". In the rotating bracket (230), the rail that engages with the second negative rail (221) may also be formed positively, and may be referred to as a "second positive rail (235)". In the present disclosure, “negative” may mean that the rail structure has a recessed shape compared to the surrounding structure of the rail (e.g., the first rib (211c) and the second rib (211d) in the case of the first rotating member), and “positive” may mean that the rail structure has a protruding shape compared to the surrounding structure of the rail.

[0120] FIG. 13A is a drawing showing an inner end of a first rail of a first rotating member according to a comparative embodiment. FIG. 13B is a drawing showing an inner end of a first rail of a first rotating member according to a comparative embodiment. FIG. 13C is a drawing showing an inner end of a first rail of a first rotating member according to a comparative embodiment. FIG. 14A is a drawing showing an inner end of a first rail of a first rotating member according to an embodiment of the present disclosure. FIG. 14B is a drawing showing an inner end of a first rail of a first rotating member according to an embodiment of the present disclosure. FIG. 14C is a drawing showing an inner end of a first rail of a first rotating member according to an embodiment of the present disclosure. FIGS. 13a and 13b may represent an enlarged perspective view of the first rail of the first rotating member, FIGS. 13b and 14b may represent a cross-sectional view of the first rail, and FIGS. 13c and 13c may represent a side view of the first rail.

[0121] Referring to FIGS. 13a, 13b, and 13c, the first rotation member (210) is formed so that the first rail (211) has a constant depth, so that the inner end (211b) of the first rotation member (210) and the width (W2) of the first rail (211) from the inner end (211b) can be formed to be constant. In this structure, the rigidity of the neck (N) portion of the first rotation member (210) can be the weakest.

[0122] According to a hinge (150) and a foldable electronic device (100) including the hinge according to one embodiment of the present disclosure, in order to increase the rigidity of a neck (N) portion, a reinforcing portion (215) protruding from at least a portion of the first negative rail (211) in a direction parallel to the first axis may be provided at a position of an end of the first negative rail (211).

[0123] Referring to FIGS. 14a, 14b, and 14c, the first rotation member (210) does not have a constant depth of the first rail (211), but is formed with a shallow depth at its end by a reinforcing member (215). In the case of the first rotation member (210) including the reinforcing member (215), the width (W3) of the inner end (211b) where the reinforcing member (215) is formed may be larger than the width (W2) of the first rail (211). Due to the configuration of the reinforcing member (215), the rigidity of the neck (N) portion is increased, and the durability of the hinge (150) is improved.

[0124] According to one embodiment, the reinforcing member (215) may be formed only at the inner end (211b) of the first negative rail (211) adjacent to the position corresponding to the neck portion of the first rotating member (210).

[0125] Although not shown in the drawing, the second rotation member (220) may also, like the first rotation member (210), include a reinforcing member that protrudes in a direction parallel to the first axis from at least a portion of the second negative rail (221) at the end of the second negative rail (221). For the purpose of distinction, the reinforcing member formed on the first rotation member (210) may be referred to as a “first reinforcing member (215),” and the reinforcing member formed on the second rotation member (220) may be referred to as a “second reinforcing member.”

[0126] According to one embodiment, since the first rotation member (210) has the first rail (211) formed not only on the first side (210a) but also on the second side (210b), the reinforcing member (215) can be formed on both the first rail (211) formed on the first side (210a) of the first rotation member (210) and the first rail (211) formed on the second side (210b).

[0127] According to one embodiment, as a specific shape of the reinforcement part, a C-cut shape reinforcement part can be applied. Here, the C-cut shape may mean a shape in which the thickness of the protrusion part becomes thicker from the center of the first rail (211) toward the first rib (211c) and / or the second rib (211d) around it.

[0128] FIG. 15 is a drawing showing a state in which a first rotation member and a second rotation member are seated on a rotation bracket when the foldable electronic device is unfolded according to an embodiment of the present disclosure. FIG. 16 is a drawing showing a state in which a rotation bracket is viewed in the width direction of the foldable electronic device according to an embodiment of the present disclosure. FIG. 17 is a drawing showing a state in which a rotation bracket is viewed in the width direction of the foldable electronic device when the first rotation member is coupled to the rotation bracket according to an embodiment of the present disclosure. FIG. 18a is a drawing showing a state in which a first rotation member and a rail of the rotation bracket are coupled in a cross-section taken along line D-D' of FIG. 17. FIG. 18b is a drawing showing a state in which a first rotation member and a rail of the rotation bracket are coupled in a cross-section taken along line E-E' of FIG. 17.

[0129] Referring to FIGS. 15 to 18b, the rails (233, 235) formed on the rotation bracket (230) may have a structure for escaping the reinforcement parts of the first rotation member (210) and the second rotation member (220) described above through the embodiments of FIGS. 14a, 14b, and 14c.

[0130] Referring to FIG. 15, if the rotation bracket (230) does not have an escape structure corresponding to the reinforcing portions of the first rotation member (210) and the second rotation member (220), the ends of the rails (233, 235) formed on the rotation bracket (230) and the reinforcing portions of the first rotation member (210) and the second rotation member (220) may interfere with each other.

[0131] Accordingly, as illustrated in FIGS. 18a and 18b, when the rails (233, 235) formed on the rotation bracket (230) are raised rails, the thickness of the raised rails can be partially made thinner to avoid interference with the reinforcing portions of the first rotation member (210) and the second rotation member (220). According to one embodiment, the thickness of the ends of the rails (233, 235) formed on the rotation bracket (230) can be reduced by the thickness of the protruding reinforcing portions to avoid interference.

[0132] FIG. 19 is a perspective view of a first arm member according to one embodiment of the present disclosure. FIG. 20 is a perspective view showing a first arm member and a second arm member coupled with a first cam member and a second cam member according to one embodiment of the present disclosure.

[0133] Referring to Fig. 19, a specific shape of the arm member is described through some components of the first arm member (A1), the first-first arm member (410).

[0134] A female member (e.g., a 1-1 female member (410)) may include two moving elements (e.g., a third rail (411) and a third sub-rail (412)). For example, when a surface of the 1-1 female member (410) facing the +Z-axis direction is referred to as an upper surface (410c), the 1-1 female member (410) may include two rails (e.g., a third rail (411) and a third sub-rail (412)) on a surface (e.g., a first side surface (410a)) facing the first direction (-Y-axis direction). Here, the first direction (-Y-axis direction) may be parallel to the longitudinal direction (Y-axis direction) of the foldable electronic device. Although not shown in the drawing, the 1-1 arm member (410) and the 1-2 arm member (430) forming one 1-1 arm member (A1) may have a 5th rail (431) and a 5th sub-rail (432) formed on a surface (e.g., a 2nd side surface (410b)) facing a 2nd direction (Y-axis direction) opposite to the 1st direction. According to one embodiment, the 3rd rail (411) may be arranged closer to the folding axis (e.g., the folding axis (F) of FIG. 1) than the 3rd sub-rail (312) in the hinge (150). According to one embodiment, the 3rd rail (411) and the 3rd sub-rail (412) may be configured in the shape of an arc when viewed in the longitudinal direction (Y-axis direction) of the electronic device. According to one embodiment, the first end (411a), which is one end point of the third rail (411), and the second end (411b), which is the other end point, may be parallel to each other. According to one embodiment, the second end (411b) may be referred to as an “inner end (411b) of the third rail (411)” because it is located at the center of the 1-1 arm member (410), and the first end (411a) may be referred to as an “outer end (411b) of the third rail (411)” because it is located at the edge of the 1-1 arm member (410).

[0135] The third sub-rail (312) of the first-first arm member (410) may be engaged with the second guide rail (313) of the first connecting member (310). According to one embodiment, the first-first arm member (410) may include a third seating surface (413) that faces the first wing plate (610) of FIG. 4. According to one embodiment, the third seating surface (413) may be formed to be parallel to the upper surface (410c) facing the +Z-axis direction and have a predetermined step with the upper surface (410c). At least a portion of the first wing plate (610) may be seated on the third seating surface (413).

[0136] According to one embodiment, the 1-1 arm member (410) may include a third rib (411c) positioned in the direction of the rotation center of the third rail (411) on the first side (410a) and the second side (410b), respectively, and a third rib (411d) surrounding the third rail (411). According to one embodiment, the third rib (411c) and the fourth rib (411d) of the 1-1 arm member (410) may have a shape that protrudes in the longitudinal direction (Y-axis direction) of the foldable electronic device (100) with respect to the third rail (411). According to one embodiment, the third rail (411) of the 1-1 arm member (410) may have a recess shape formed in an engraved manner. The third rail (411) formed by engraving may be referred to as a “third engraved rail (411).”

[0137] The description of the above 1-1 female member (410) can also be applied to another 2-1 female member (420).

[0138] Referring to FIG. 20, the third rail (411) of the 1-1 arm member (410) can rotate while engaging with the rail (512) of the 1st cam member (510). The fourth rail (421) of the 2-1 arm member (420) can rotate while engaging with the other rail (513) of the 1st cam member (510). The fifth rail (431) of the 1-2 arm member (430) can rotate while engaging with the rail (522) of the 2nd cam member (520). The sixth rail (441) of the 2-2 arm member (440) can rotate while engaging with the other rail (523) of the 2nd cam member (520). And, each of the first cam member (510) and the second cam member (520) can be elastically supported by elastic elements (S1, S2).

[0139] FIG. 21 is a perspective view showing a state in which a rail of a female member and a rail of a cam member are combined according to one embodiment of the present disclosure.

[0140] In the description below in Fig. 21, the 2-1 female member (420) may be used as an example. The description of the 2-1 female member (420) may be equally applied to other female members as well as the 1-1 female member (410).

[0141] When the fourth rail (421) of the second-first arm member (420) is engaged with the rail (513) of the cam member (510), the third rib (421c) and / or the fourth rib (421d) surrounding the fourth rail (421) of the second-first arm member (420) may be easily damaged due to torsion during the operation of the hinge (150). The present disclosure may provide various embodiments for increasing the durability of such a vulnerable second-first arm member (420).

[0142] FIG. 22 is a drawing showing a state in which a first arm member, a second arm member, and a cam member are coupled according to one embodiment of the present disclosure. FIG. 23 is a drawing showing a second arm member coupled to a cam member according to one embodiment of the present disclosure. FIG. 24 is a drawing showing a cam member coupled to a second arm member according to one embodiment of the present disclosure.

[0143] Referring to FIGS. 22 to 24, the shapes of the rails included in the 1-1 arm member (410), the 2-1 arm member (420), and the cam member (500) will be described in more detail. The embodiments of FIGS. 22 to 24 may illustrate the shapes of the rails included in the 1-1 arm member (410), the 2-1 arm member (420), and the cam member (500) when the foldable electronic device (100) is folded. FIG. 22 illustrates a front view of the hinge (150) when viewed in the second direction (+Y-axis direction), and FIGS. 23 and 24 may illustrate perspective views of the hinge (150) when viewed in the first direction (-Y-axis direction). Fig. 23 is a projection view of a 2-1 female member coupled to a cam member, and Fig. 24 may be a projection view of a cam member coupled to a 2-1 female member.

[0144] Referring to FIG. 22, the arc lengths of the third rail (411) of the 1-1 arm member (410) and the fourth rail (421) of the 2-1 arm member (420) may be the same. According to one embodiment, the arc lengths of the third rail (411) of the 1-1 arm member (410) and the fourth rail (421) of the 2-1 arm member (420) may be longer than the arc lengths of the rails formed in the 1st cam member (510).

[0145] In one embodiment, the third rail (411) of the 1-1 arm member (410) may be formed negatively, and may be a "third negative rail (411)". The fourth rail (421) of the 2-1 arm member (420) may also be formed negatively, and may be a "fourth negative rail (421)". Correspondingly, in the first cam member (510), the rail that engages with the third negative rail (411) may be formed positively, and may be referred to as a "third positive rail (522)". In the first cam member (520), the rail that engages with the fourth negative rail (421) may also be formed positively, and may be referred to as a "fourth positive rail (523)".

[0146] FIG. 25A is a drawing showing a rail of an arm member according to a comparative embodiment. FIG. 25B is a drawing showing a rail of an arm member according to a comparative embodiment. FIG. 26A is a drawing showing a rail of an arm member according to an embodiment of the present disclosure. FIG. 26B is a drawing showing a rail of an arm member according to an embodiment of the present disclosure. FIGS. 25A and 25B may show a side view of the rail of the arm member. FIGS. 25B and 26B may show a top view of the rail of the arm member.

[0147] Referring to FIGS. 25a and 25b, since the 2-1 female member (420) is formed so that the 4th rail (421) has a constant depth, the width of the 4th rail (421) from the inner end (421b) of the 2-1 female member (210) and the inner end (421b) of the 4th rail (421) can be formed to be constant. In this structure, the rigidity of the ribs (421c, 421d) around the 4th rail (421) of the 2-1 female member (420) may be weak.

[0148] According to a hinge (150) and a foldable electronic device (100) including the hinge (150) according to one embodiment of the present disclosure, in order to increase the rigidity of the rib (421c, 421d) portion, as shown in FIGS. 26a and 26b, a reinforcing portion (425) may be provided that protrudes from at least a portion of the fourth negative rail (421) in a direction parallel to the first axis at a position of an end of the fourth negative rail (421).

[0149] According to one embodiment, the reinforcing member (425) may be formed on both the outer end (421a) and the inner end (421b) of the first negative rail (211) adjacent to the corresponding positions of the ribs (421c, 421d) of the second-first female member (420).

[0150] Although not shown in the drawing, the 1-1 arm member (410), the 2-1 arm member (430), and the 2-2 arm member (440) may also have a configuration corresponding to the reinforcing portion (425) of the 2-1 arm member (420).

[0151] According to one embodiment, the first-first arm member (410) and the first-second arm member (430) may be formed integrally and provided as a first arm member (A1) having reinforcing portions formed on one side and the other side, respectively. In this case, the reinforcing portions illustrated in FIGS. 26a and 26b may be provided on one side and the other side of the first arm member (A1). According to one embodiment, the second-first arm member (420) and the second-second arm member (440) may be formed integrally and provided as a second arm member (A2) having reinforcing portions formed on one side and the other side, respectively. In this case, the reinforcing portions illustrated in FIGS. 26a and 26b may be provided on one side and the other side of the second arm member (A2).

[0152] According to one embodiment of the present disclosure, a foldable electronic device (100) including a hinge (150) may be provided. The foldable electronic device (100) may include a first housing (110); a second housing (120); a hinge (150) that rotatably connects the first housing and the second housing about a folding axis (F); and a flexible display (140). The hinge (150) includes a first rotation member (Rotate) (210) configured to rotate about a first axis (Ax1) and including a first engraved rail (211) that is concavely formed toward a first direction (-Y axis) on a surface facing a first direction parallel to the first axis; It may include a second rotating member (Rotate) (220) configured to rotate about a second axis (Ax2) parallel to the first axis and including a second concave rail (221) formed concavely toward the first direction on a surface facing the first direction; a first arm member (A1) that rotates in response to the rotation of the first rotating member; a second arm member (A2) that rotates in response to the rotation of the second rotating member; a rotating bracket (Rotate bracket) (230) including a first positive rail (233) corresponding to the first negative rail and a second positive rail (235) corresponding to the second negative rail; a first connecting member (Link) (310) connecting the first rotating member and the first arm member; and a second connecting member (Link) (320) connecting the second rotating member and the second arm member. In addition, the hinge may include a reinforcing portion (215; 225) that is formed to protrude in a direction parallel to the first axis from at least a portion of the first negative rail (211) at the end position of the first negative rail (211), and that is formed to protrude in a direction parallel to the first axis from at least a portion of the second negative rail (221) at the end position of the second negative rail (221).

[0153] According to one embodiment, when the first rotation member (210) and the second rotation member (220) are viewed from above, the first part (S1) of each of the first rotation member and the second rotation member may have a shape that is bent so as to be stepped from the second part (S2) of each of the first rotation member and the second rotation member in the first direction and the second direction. When the first rotation member (210) and the second rotation member (220) are viewed from above, the first part (S1) of each of the first rotation member and the second rotation member may have a shape that is bent so as to be stepped from the second part (S2) of each of the first rotation member and the second rotation member in the first direction and the second direction. The reinforcing part may be formed at the inner end (211b) of the first negative rail (211) adjacent to the position corresponding to the neck portion of the first rotating member (210) and at the inner end (221b) of the second negative rail (221) adjacent to the position corresponding to the neck portion of the second rotating member (220).

[0154] According to one embodiment, the rotation bracket may be configured to support the first rotation member and the first part of the second rotation member, and the connecting member may be configured to support the second part of the first rotation member and the second rotation member. When the rotation bracket is viewed from above, the first part of the first rotation member and the second part of the second rotation member may be arranged to be staggered relative to the center of the body (231) of the rotation bracket.

[0155] According to one embodiment, the first rotation member is configured to rotate about a first axis (Ax1) and may include a first negative rail concavely formed on a surface facing the first direction and a first negative rail (211) concavely formed on a surface facing a second direction (+Y axis) opposite to the first direction. The second rotation member is configured to rotate about a second axis (Ax2) and may include a second negative rail concavely formed on a surface facing the first direction and a second negative rail (221) concavely formed on a surface facing the second direction.

[0156] According to one embodiment, an escape structure may be formed on the first positive rail and the second positive rail to escape the reinforcing portion of the first negative rail and the reinforcing portion of the second negative rail, respectively.

[0157] According to one embodiment, the ends of the first raised rail and the second raised rail may be formed thinner than other portions of the first raised rail and the second raised rail by the thickness of the reinforcing portion.

[0158] According to one embodiment, the reinforcing member may be a C-cut shaped reinforcing member.

[0159] According to one embodiment, the first female member may include a third negative rail (411) formed on a surface facing the first direction, and the second female member may include a fourth negative rail (421) formed on a surface facing the first direction.

[0160] According to one embodiment, the device may further include a cam member (450) configured to engage with the first female member and the second female member. The cam member may include a third positive rail (452) corresponding to the third negative rail and a fourth positive rail (453) corresponding to the fourth negative rail.

[0161] According to one embodiment, the first arm member may include a 1-1 arm member (410) and a 1-2 arm member (430) that is positioned relatively further from the first rotation member than the 1-1 arm member. The second arm member may include a 2-1 arm member (420) and a 2-2 arm member (440) that is positioned relatively further from the second rotation member than the 2-1 arm member. The 1-1 arm member may include a third engraved rail (411) formed on a surface facing the first direction, and the 1-2 arm member may include a fifth engraved rail (431) formed on a surface facing the second direction. The above 2-1 female member may include a fourth negative rail (421) formed on a surface facing the first direction, and the 2-2 female member may include a sixth negative rail (441) formed on a surface facing the second direction.

[0162] According to one embodiment, the cam member may include a first cam member (450) configured to engage with the first-first arm member and the first-second arm member, and a second cam member (460) configured to engage with the second-first arm member and the second-second arm member. The first cam member may include a third positive rail (452) corresponding to the third negative rail and a fourth positive rail (453) corresponding to the fourth negative rail. The second cam member may include a fifth positive rail (462) corresponding to the fifth negative rail and a sixth positive rail (463) corresponding to the sixth negative rail.

[0163] According to one embodiment, the ends of the third negative rail and the fourth negative rail may have reinforcements formed on both the outer end (421a) and the inner end (421b) adjacent to the corresponding positions of the ribs (421c, 421d).

[0164] According to one embodiment of the present disclosure, a foldable electronic device (100) including a hinge (150) may be provided. The foldable electronic device (100) includes a first housing (110); a second housing (120); a hinge (150) that rotatably connects the first housing and the second housing about a folding axis (F); and a flexible display (140), wherein the hinge (150) comprises a first rotation member (Rotate) (210) configured to rotate about a first axis (Ax1) and including a first rail (211) formed on a surface facing a first direction parallel to the first axis; a second rotation member (Rotate) (220) configured to rotate about a second axis (Ax2) parallel to the first axis and including a second rail (221) formed on a surface facing the first direction; A first arm member (A1) that rotates in response to the rotation of the first rotating member and includes a third rail (411) formed on a surface facing the first direction; a second arm member (A2) that rotates in response to the rotation of the second rotating member and includes a fourth rail (421) formed on a surface facing the first direction; a rotating bracket (230) that includes a rail (233) corresponding to the first rail and a rail (235) corresponding to the second rail; a first connecting member (Link) (310) that connects the first rotating member and the first arm member; a second connecting member (Link) (320) that connects the second rotating member and the second arm member; And a cam member (450) configured to engage with the first arm member and the second arm member, the cam member (450) including a rail (452) corresponding to the third rail and a rail (453) corresponding to the fourth rail;And, the hinge may include a reinforcing member (215; 225; 415; 425) that is formed to protrude in a direction parallel to the first axis from at least a portion of the first rail (211) at the end of the first rail (211), to protrude in a direction parallel to the first axis from at least a portion of the second rail (221) at the end of the second rail (221), to protrude in a direction parallel to the first axis from at least a portion of the third rail (411) at the end of the third rail (411), and to protrude in a direction parallel to the first axis from at least a portion of the fourth rail (421) at the end of the fourth rail (421).

[0165] According to one embodiment of the present disclosure, a hinge (150) for a foldable electronic device can be provided. The hinge includes: a first rotating member (Rotate) (210) configured to rotate about a first axis (Ax1) and including a first engraved rail (211) formed concavely toward a first direction (-Y axis) on a surface facing a first direction parallel to the first axis; a second rotating member (Rotate) (220) configured to rotate about a second axis (Ax2) parallel to the first axis and including a second engraved rail (221) formed concavely toward the first direction on a surface facing the first direction; a first arm member (A1) that rotates in response to the rotation of the first rotating member; a second arm member (A2) that rotates in response to the rotation of the second rotating member; It may include a rotating bracket (230) including a first positive rail (233) corresponding to the first negative rail and a second positive rail (235) corresponding to the second negative rail; a first connecting member (Link) (310) connecting the first rotating member and the first arm member; and a second connecting member (Link) (320) connecting the second rotating member and the second arm member. In addition, the hinge may include a reinforcing member (215; 225) that is formed to protrude in a direction parallel to the first axis from at least a portion of the first negative rail (211) at a position of an end of the first negative rail (211) and is formed to protrude in a direction parallel to the first axis from at least a portion of the second negative rail (221) at a position of an end of the second negative rail (221).

[0166] Although the detailed description of the present disclosure has described specific embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present disclosure.

[0167] While this disclosure has been described by way of example and example, it should be understood that the example is intended to be illustrative and not limiting. It will be apparent to those skilled in the art that various changes in form and detail may be made without departing from the overall scope of this disclosure, including the appended claims and their equivalents.

Claims

In a foldable electronic device (100) including a hinge (150), First housing (110); Second housing (120); A hinge (150) that rotatably connects the first housing and the second housing; and Includes a flexible display (140), The above hinge (150) is A first rotating member (Rotate) (210) configured to rotate about a first axis (Ax1) and including a first negative rail (211) on a surface facing a first direction parallel to the first axis; A second rotating member (Rotate) (220) configured to rotate about a second axis (Ax2) parallel to the first axis and including a second engraved rail (221) on a surface facing the first direction; A first arm member (A1) that rotates in response to the rotation of the first rotating member; A second arm member (A2) that rotates in response to the rotation of the second rotating member; A rotating bracket (230) including a first positive rail (233) corresponding to the first negative rail and a second positive rail (235) corresponding to the second negative rail; A first connecting member (Link) (310) connecting the first rotating member and the first arm member; and A second connecting member (Link) (320) connecting the second rotating member and the second arm member; An electronic device comprising a first reinforcing member (215) protruding in a direction parallel to the first axis from at least a portion of the first negative rail (211) at an end position of the first negative rail (211), and a second reinforcing member protruding in a direction parallel to the first axis from at least a portion of the second negative rail (221) at an end position of the second negative rail (221). In the first paragraph, When the first rotation member (210) and the second rotation member (220) are viewed from above, the first part (S1) of each of the first rotation member and the second rotation member has a shape that is bent so as to be stepped in the first direction and the second direction with respect to the second part (S2) of each of the first rotation member and the second rotation member, An electronic device in which the reinforcing portion is formed on the inner end (211b) of the first negative rail (211) adjacent to a position corresponding to the neck portion of the first rotating member (210) and on the inner end (221b) of the second negative rail (221) adjacent to a position corresponding to the neck portion of the second rotating member (220). In claim 1 or 2, The above rotation bracket supports the first rotation member and the first part of the second rotation member, and the connecting member is configured to support the second part of the first rotation member and the second rotation member, An electronic device in which, when the above-mentioned rotation bracket is viewed from above, the first part of the first rotation member and the second part of the second rotation member are arranged staggered relative to the center of the body (231) of the above-mentioned rotation bracket. In any one of claims 1 to 3, The first rotating member is configured to rotate based on a first axis (Ax1), and includes a first negative rail concavely formed on a surface facing the first direction and a first negative rail (211) concavely formed on a surface facing a second direction (+Y axis) opposite to the first direction. An electronic device in which the second rotating member is configured to rotate about a second axis (Ax2), and includes a second engraved rail concavely formed on a surface facing the first direction and a second engraved rail (221) concavely formed on a surface facing the second direction. In any one of claims 1 to 4, An electronic device in which an escape structure is formed on the first positive rail and the second positive rail to escape the reinforcing portion of the first negative rail and the reinforcing portion of the second negative rail, respectively. In paragraph 5, An electronic device in which the ends of the first raised rail and the second raised rail are formed thinner than other parts of the first raised rail and the second raised rail by the thickness of the reinforcing part. In any one of claims 1 to 6, An electronic device in which the above reinforcement part is a C-cut shaped reinforcement part. In any one of claims 1 to 7, The first female member includes a third engraved rail (411) formed on a surface facing the first direction, An electronic device in which the second arm member includes a fourth engraved rail (421) formed on a surface facing the first direction. In paragraph 8, It further includes a cam member (450) configured to engage with the first female member and the second female member, An electronic device in which the cam member includes a third positive rail (452) corresponding to the third negative rail and a fourth positive rail (453) corresponding to the fourth negative rail. In any one of claims 1 to 9, The first arm member includes a first-first arm member (410) and a first-second arm member (430) that is positioned relatively farther from the first rotation member than the first-first arm member, The second arm member includes a second-first arm member (420) and a second-second arm member (440) that is positioned relatively farther from the second rotation member than the second-first arm member, The 1-1 female member includes a third negative rail (411) formed on a surface facing the first direction, and the 1-2 female member includes a fifth negative rail (431) formed on a surface facing the second direction. An electronic device in which the 2-1 female member includes a fourth engraved rail (421) formed on a surface facing the first direction, and the 2-2 female member includes a sixth engraved rail (441) formed on a surface facing the second direction. In paragraph 10, It includes a first cam member (450) configured to engage with the first-first arm member and the first-second arm member, and a second cam member (460) configured to engage with the second-first arm member and the second-second arm member, The first cam member includes a third positive rail (452) corresponding to the third negative rail and a fourth positive rail (453) corresponding to the fourth negative rail, An electronic device in which the second cam member includes a fifth positive rail (462) corresponding to the fifth negative rail and a sixth positive rail (463) corresponding to the sixth negative rail. In paragraph 8, An electronic device in which the ends of the third negative rail and the fourth negative rail have reinforcements formed on both the outer end (421a) and the inner end (421b) adjacent to the corresponding positions of the ribs (421c, 421d).

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