Hinge structure and electronic device including the same

Abstract

An electronic device is provided. The electronic device includes a first housing, a second housing, a hinge structure connected to the first housing and the second housing such that the first housing rotates about a first rotation axis and the second housing rotates about a second rotation axis, the first rotation axis and the second rotation axis being parallel to an axial direction, and a display covering the first housing, the second housing, and the hinge structure, the hinge structure including a first arm shaft extending in parallel to the axial direction and rotating according to rotation of a first rotation structure, a second arm shaft extending in parallel to the axial direction and rotating according to rotation of a second rotation structure, and a link structure moving linearly in the axial direction according to rotation of the first arm shaft and the second arm shaft.

Description

[0001] Cross-reference to related applications

[0002] This application is a national phase application of international application PCT / KR2022 / 000458 filed on January 11, 2022, which is based on and claims priority to Korean Patent Application No. 10-2021-0013653 filed with the Korean Intellectual Property Office on January 29, 2021, and Korean Patent Application No. 10-2021-0034842 filed with the Korean Intellectual Property Office on March 17, 2021, the disclosures of which are incorporated herein by reference in their entirety. Technical Field

[0003] This disclosure relates to hinge structures and electronic devices including such hinge structures. Background Technology

[0004] Portable electronic devices such as smartphones offer a variety of functions for various applications, including voice communication, video playback, and internet searching. Users may want to utilize these functions through a wider screen. However, as screen size increases, portability may decrease. Therefore, foldable electronic devices incorporating flexible displays have been developed, where portions of the display are bent into curved or flat surfaces, providing a wide screen while maintaining portability. Foldable electronic devices include a hinge structure to which adjacent housings are connected for rotation.

[0005] The above information is presented as background information and is intended to aid in understanding this disclosure. It is not yet determined or can be clearly stated that any of the above content may be applied to the prior art relating to this disclosure. Summary of the Invention

[0006] The hinge structure includes a gear interlocking structure, in which a first housing and a second housing are connected to each other by gears, such that the first housing and the second housing fold at the same angle in opposite directions. For example, the gear interlocking structure includes a first gear corresponding to the rotation of the first housing, a second gear corresponding to the rotation of the second housing, and an idler gear connecting the first gear and the second gear. According to the gear interlocking structure, backlash may occur between the meshing gears. Due to this backlash, the first housing and the second housing may not be interlocked.

[0007] Furthermore, the hinge structure includes a central rod supporting the rear surface of the display. This central rod can move in accordance with the shape of the display. The central rod can be interlocked with both the first and second housings. Therefore, when the first and second housings are not interlocked, the central rod cannot maintain a horizontal position.

[0008] The present disclosure is intended to at least address the aforementioned problems and / or disadvantages, and to provide at least the advantageous effects described below. Therefore, the present disclosure provides a hinge structure that allows the first and second housings to interlock with each other and maintains the horizontal state of the center rod by reducing tooth flank clearance.

[0009] Additional aspects will be set forth in part in the description below and will be apparent in part from the description, or may be derived by practice of the proposed embodiments.

[0010] According to an aspect of this disclosure, an electronic device is provided. The electronic device includes: a first housing; a second housing; a hinge structure connecting the first housing and the second housing such that the first housing rotates about a first rotation axis parallel to its axial direction, and the second housing rotates about a second rotation axis R2 parallel to the axial direction; and a display covering the first housing, the second housing, and the hinge structure, wherein the display includes a folding region that is flat in an unfolded state and curved in a folded state.

[0011] The hinge structure includes: a first arm shaft extending in a direction parallel to the axial direction, connected to a fixed structure for rotatability, and rotating in accordance with the rotation of a first rotating structure; a second arm shaft extending in a direction parallel to the axial direction, connected to the fixed structure for rotatability, and rotating in accordance with the rotation of a second rotating structure; a linkage structure including a first portion connected to the first arm shaft, a second portion connected to the second arm shaft, and a central portion connecting the first portion and the second portion, and the linkage structure being configured to move linearly in the axial direction according to the rotation of the first arm shaft and the second arm shaft; and a center rod that, when viewed from above, at least partially overlaps the folding area of ​​the display, wherein the center rod is connected to the linkage structure, and the center rod is configured to move in a direction perpendicular to the axial direction in accordance with the linear movement of the linkage structure.

[0012] According to another aspect of this disclosure, a hinge structure is provided. The hinge structure includes: a fixed structure; a first rotating structure, the first rotating structure being coupled to a first guide rail of the fixed structure for rotation about a first rotation axis; a first arm shaft, the first arm shaft extending in a direction parallel to the first rotation axis and connected to the fixed structure for rotatability, wherein the first arm shaft includes a first guide pin protruding from the outer surface of the first arm shaft; a first arm portion, the first arm portion being coupled to the first arm shaft for rotation about the first arm shaft and connected to the first rotating structure for sliding; a second rotating structure, the second rotating structure being coupled to a second guide rail of the fixed structure for rotation about a second rotation axis; and a second arm shaft, the second arm shaft extending in a direction parallel to the second rotation axis and connected to... The fixed structure is rotatable, wherein the second arm shaft includes a third guide pin protruding from the outer surface of the second arm shaft; a second arm portion coupled to the second arm shaft for rotation about the second arm shaft and connected to the second rotating structure for sliding; and a linkage structure including: a first portion having a first guide groove formed therein, through which the first arm shaft passes and the first guide pin is at least partially received in the first guide groove; a second portion having a second guide groove formed therein, through which the second arm shaft passes and the third guide pin is at least partially received in the second guide groove; and a central portion connecting the first portion and the second portion.

[0013] The hinge structure according to embodiments of the present disclosure can mitigate the failure of the first housing and the second housing to interlock with each other by providing improved tooth flank clearance compared to a gear interlocking structure.

[0014] The hinge structure according to the embodiments disclosed in this disclosure includes a linkage structure that interlocks the first housing and the second housing with each other while moving in the axial direction during folding and unfolding operations, and is configured such that the movement of the central rod is coordinated with the movement of the linkage structure, thereby maintaining the central rod in a horizontal state even when the first housing and the second housing are tilted.

[0015] Other aspects, advantages, and distinctive features of this disclosure will be apparent to those skilled in the art from the following detailed description of various embodiments disclosed in conjunction with the accompanying drawings. Attached Figure Description

[0016] The above-mentioned aspects, features, and advantages of specific embodiments of the present disclosure, as well as other aspects, features, and advantages, will become more apparent from the description taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1This is an exploded perspective view of an electronic device according to an embodiment of the present disclosure;

[0018] Figure 2a This is a view showing the unfolded state of an electronic device according to an embodiment of the present disclosure;

[0019] Figure 2b This is a view showing the folded state of an electronic device according to an embodiment of the present disclosure;

[0020] Figure 2c This is a view of the electronic device in a fully folded state according to an embodiment of the present disclosure;

[0021] Figure 3 This is a view showing a first housing, a second housing, and a hinge structure of an electronic device according to an embodiment of the present disclosure;

[0022] Figure 4 This is a perspective view of a hinge structure according to an embodiment of the present disclosure;

[0023] Figure 5 This is a rear view of a hinge structure according to an embodiment of the present disclosure;

[0024] Figure 6 This is an exploded perspective view of a hinge structure according to an embodiment of the present disclosure;

[0025] Figure 7 This is an exploded perspective view of a hinge structure according to an embodiment of the present disclosure;

[0026] Figure 8 (a), (b) and (c) are views illustrating the rotational operation of the hinge structure according to various embodiments of the present disclosure;

[0027] Figure 9 (a), (b) and (c) are views illustrating the rotational and sliding operations of the arm of the hinge structure and the rotating structure according to various embodiments of the present disclosure;

[0028] Figure 10 This is a view showing the linkage structure and central rod of the hinge structure in the deployed state according to an embodiment of the present disclosure;

[0029] Figure 11 This is a view showing the linkage structure and center rod of a hinge structure in a fully folded state according to an embodiment of the present disclosure;

[0030] Figure 12 This is a view showing the linkage structure of the hinge structure in the deployed state according to an embodiment of the present disclosure;

[0031] Figure 13This is a view showing the linkage structure of the hinge structure in a fully folded state according to an embodiment of the present disclosure;

[0032] Figure 14 (a) is a view showing the linkage structure of the hinge structure in the deployed state according to an embodiment of the present disclosure. Figure 14 (b) is along Figure 14 The view intercepted by line A-A' in (a); Figure 14 (c) is along Figure 14 The view captured by line B-B' in (a);

[0033] Figure 15 (a) is a view showing the linkage structure of the hinge structure in a fully folded state according to an embodiment of the present disclosure. Figure 15 (b) is along Figure 15 The view intercepted by line A-A' in (a); Figure 15 (c) is along Figure 15 The view captured by line B-B' in (a);

[0034] Figure 16 This is a view showing that the central rod remains horizontal when the hinge structure is tilted, according to an embodiment of the present disclosure;

[0035] Figure 17a This is a view illustrating an example of a cam structure according to an embodiment of the present disclosure;

[0036] Figure 17b This is a view showing the engagement state of a cam structure according to an embodiment of the present disclosure.

[0037] In all the accompanying drawings, the same reference numerals are used to denote the same parts. Detailed Implementation

[0038] The following description, with reference to the accompanying drawings, is provided to aid in a full understanding of the various embodiments of this disclosure as defined by the claims and their equivalents. It includes various specific details to aid understanding, but these details are to be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, descriptions of well-known functions and constructions may be omitted for clarity and brevity.

[0039] The terms and words used in the following description and claims are not limited to their literal meaning, but are used by the inventors only to achieve a clear and consistent understanding of this disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this disclosure is for illustrative purposes only and not intended to limit the disclosure as defined by the appended claims and their equivalents.

[0040] It should be understood that, unless the context clearly indicates otherwise, the singular forms “a,” “one,” and “the” include plural indicators. Thus, for example, a reference to “component surface” includes a reference to one or more of these surfaces.

[0041] Figure 1 This is an exploded perspective view of an electronic device according to an embodiment of the present disclosure.

[0042] Reference Figure 1 The electronic device 100 may include a first housing 110, a second housing 120, a hinge housing 130, a hinge structure 200, and a display 140.

[0043] In an embodiment, the first housing 110 may be connected to the second housing 120 using a hinge structure 200. The first housing 110 may include: a first plate 111 on which the display 140 is mounted; and a first frame 112 surrounding at least a portion of the first plate 111. For example, the first frame 112 may define a portion of a surface (e.g., a side surface) of the electronic device 100. For example, portions of a first region 141 and a folding region 143 of the display 140 may be disposed in the first plate 111. A first rotational structure 210 of the hinge structure 200 may be connected to the first plate 111. In an embodiment, at least a portion of the first housing 110 may be engaged to the first region 141 of the display 140. Alternatively, a portion of the outer periphery of the front surface of the first housing 110 may be engaged to the outer periphery of the first region 141 of the display 140. For this purpose, a bonding layer may be disposed between the first plate 111 of the first housing 110 and the first region 141 of the display 140.

[0044] In an embodiment, at least a portion of the interior of the first housing 110 may have a hollow shape. A first circuit board 151, a first battery 153, and a camera module 156 may be disposed inside the first housing 110. The first circuit board 151 and the first battery 153 may be electrically connected via a flexible plate to a second circuit board 152 and a second battery 154 disposed inside the second housing 120. For example, a processor and a memory may be disposed within the first circuit board 151. For example, the first battery 153 and the first circuit board 151 may be disposed within a first plate 111. In an embodiment, at least a portion of the first housing 110 may be formed of a metallic material, or at least a portion of the first housing 110 may be formed of a non-metallic material. The first housing 110 may be formed of a material with a specific strength to support at least a portion of the display 140. In an embodiment, at least a portion of the portion of the first housing 110 facing the second housing 120 may have a recessed portion having a specific curvature such that the hinge housing 130 is disposed within the recessed portion.

[0045] In various embodiments, the first housing 110 may include a first rear cover 119 that defines a surface of the electronic device 100 when facing the first plate 111. For example, the first rear cover 119 may define an unfolded state (e.g., Figure 2a The rear surface of the electronic device 100 is defined by the display 140, and the display 140 may define the front surface of the electronic device.

[0046] In an embodiment, the second housing 120 may be connected to the first housing 110 via a hinge structure 200. The second housing 120 may include: a second plate 121 on which the display 140 is mounted; and a second frame 122 surrounding at least a portion of the second plate 121. For example, the second frame 122 may define a portion of a surface (e.g., a side surface) of the electronic device 100. For example, portions of the second region 142 and the folding region 143 may be disposed within the second plate 121. A second rotation structure 220 of the hinge structure 200 may be connected to the second plate 121. In an embodiment, at least a portion of the second housing 120 may be engaged to the second region 142 of the display 140. Alternatively, a portion of the outer periphery of the front surface of the second housing 120 may be engaged to the outer periphery of the second region 142 of the display 140. For this purpose, a bonding layer may be disposed between the second plate 121 of the second housing 120 and the second region 142 of the display 140.

[0047] In an embodiment, at least a portion of the interior of the second housing 120 may have a hollow shape. A second circuit board 152 and a second battery 154 may be disposed inside the second housing 120. The second circuit board 152 and the second battery 154 may be electrically connected via a flexible plate to the first circuit board 151 and / or the first battery 153 disposed inside the first housing 110. For example, the second battery 154 and the second circuit board 152 may be disposed within a second plate 121. In an embodiment, at least a portion of the second housing 120 may be formed of a metallic material, or at least a portion of the second housing 120 may be formed of a non-metallic material. The second housing 120 may be formed of a material with a specific strength to support at least a portion of the display 140. In an embodiment, at least a portion of the second housing 120 facing the first housing 110 may have a recessed portion having a specific curvature such that the hinge housing 130 is disposed within the recessed portion.

[0048] In various embodiments, the second housing 120 may include a second rear cover 129 that defines a surface of the electronic device 100 when facing the second plate 121. For example, the second rear cover 129 may define an unfolded state (e.g., Figure 2aThe rear surface of the electronic device 100 is defined by the display 140, and the display 140 may define the front surface of the electronic device.

[0049] In various embodiments, a grid structure (not shown) and / or a support (not shown) may be further included between the display 140 and the bonding layer. The grid structure may include slit regions in the folded region 143, the slit regions comprising a plurality of slits that at least partially overlap each other. The plurality of slits may extend elongated in the extending direction of the folded region 143 (e.g., the -y axis). The plurality of slits may be supported in the unfolded state (e.g., ...). Figure 2a The folded area 143 is a flat surface and can be configured such that the folded area 143 deforms during a folding or unfolding operation. In various embodiments, only a portion of the lattice structure or support can be stacked on the display 140.

[0050] In one embodiment, the hinge housing 130 may be disposed in a recessed portion of the first housing 110 and the second housing 120. The hinge housing 130 may generally have a shape that extends long in the y-axis direction. A boss for securing the hinge structure 200 may be disposed in a portion of the inner surface of the hinge housing 130.

[0051] In an embodiment, at least a portion of the display 140 may be flexible. For example, the display 140 may include a first region 141 disposed on a first housing 110, a second region 142 disposed on a second housing 120, and a folded region 143 located between the first region 141 and the second region 142. In an embodiment, the first region 141 and the second region 142 may be flat, while the folded region 143 may be deformable to become flat or curved.

[0052] In various embodiments, the hinge structure 200 may include a first rotating structure 210 connected to the first housing 110 and a second rotating structure 220 connected to the second housing 120. The hinge structure 200 may be configured such that the first rotating structure 210 and the second rotating structure 220 rotate about their axis of rotation (e.g., an imaginary axis parallel to the y-axis direction). For example, when the first housing 110 and the second housing 120 are folded or unfolded, the first rotating structure 210 and the second rotating structure 220 may each rotate about their axis of rotation.

[0053] In various embodiments, the hinge structure 200 may include a central rod 280 that, when viewed in the z-axis direction, at least partially overlaps with the folded region 143 of the display 140. The central rod 280 may support the rear surface of the folded region 143 such that the folded region 143 remains flat in the unfolded state, and the central rod 280 may move in the z-axis direction during folding operations to avoid contact with the folded region 143.

[0054] Figure 2a This is a view showing the unfolded state of an electronic device according to an embodiment of the present disclosure. Figure 2b This is a view showing the folded state of an electronic device according to an embodiment of the present disclosure. Figure 2c This is a view of an electronic device in a fully folded state according to an embodiment of the present disclosure.

[0055] In this embodiment, the first housing 110 and the second housing 120 can rotate about their axes of rotation in opposite directions. For example, during a folding operation performed from the unfolded state, the first housing 110 can rotate clockwise, while the second housing 120 can rotate counterclockwise.

[0056] In this embodiment, an axial direction parallel to the rotation axes of the first housing 110 and the second housing 120 can be defined. The axial direction can be defined as the extension direction of the folding region 143 of the display 140. For example, the axial direction can be defined as the direction of the long side of the folding region 143. For example, the axial direction can refer to... Figure 1 The direction parallel to the y-axis.

[0057] To describe the state of the electronic device according to embodiments of the present disclosure, a first periphery P1 and a second periphery P2 of the electronic device 100, parallel to the axial direction, can be defined. To describe the state of the electronic device 100, a third periphery P3 and a fourth periphery P4 of the electronic device 100, perpendicular to the axial direction, can be defined. For example, the first periphery P1 and the third periphery P3 may include a portion of the first frame 112 of the first housing 110. For example, the second periphery P2 and the fourth periphery P4 may include a portion of the second frame 122 of the second housing 120.

[0058] Reference Figure 2a Describe the deployed state of the electronic device.

[0059] For example, the unfolded state may include a state where the folded area 143 of the display 140 is flat. For example, the unfolded state may include a state where the first area 141 and the second area 142 of the display 140 are located on a plane facing the same direction. For example, the unfolded state may include a state where the first normal vector n1 of the first area 141 and the second normal vector n2 of the second area 142 of the display 140 are parallel to each other. For example, the unfolded state may include a state where a third perimeter P3 and a fourth perimeter P4 define a substantially straight line. For example, the unfolded state may include a state where the third perimeter P3 and the fourth perimeter P4 define 180 degrees.

[0060] Reference Figure 2b Describe the folded state of the electronic device.

[0061] For example, a folded state may include a bent state of the folded region 143 of the display 140. For example, a folded state may include a state in which a first normal vector n1 of a first region 141 and a second normal vector n2 of a second region 142 define a specific angle. For example, a folded state may include a state in which a third perimeter P3 and a fourth perimeter P4 define a specific angle other than 180 degrees.

[0062] Reference Figure 2c Describe the fully folded state of the electronic device.

[0063] For example, a fully folded state can refer to a state in which the first periphery P1 and the second periphery P2 are substantially in contact with each other in the folded state. For example, the folded region 143 in the fully folded state can have a curved surface with a curvature greater than that of the folded region 143 in the folded state.

[0064] Reference Figure 2b and Figure 2c In both the folded and fully folded states, at least a portion of the hinge housing 130 can define the surface of the electronic device 100. For example, the hinge housing 130 can be visually exposed between the first housing 110 and the second housing 120.

[0065] Figure 3 This is a view showing a first housing, a second housing, and a hinge structure of an electronic device according to an embodiment of the present disclosure.

[0066] In one embodiment, the electronic device 100 may include a hinge structure 200 connected to a first housing 110 and a second housing 120. For example, in one embodiment, the hinge structure 200 may connect the first housing 110 and the second housing 120 such that the first housing 110 and the second housing 120 rotate about a first rotation axis R1 and a second rotation axis R2.

[0067] In an embodiment, the hinge structure 200 may include a first hinge structure 200a and a second hinge structure 200b spaced apart from the first hinge structure 200a in the axial direction (e.g., the y-axis direction).

[0068] In one embodiment, the first rotating structure 210 of the hinge structure 200 may be connected to the first housing 110. For example, when the first housing 110 is folded or unfolded, the first rotating structure 210 may rotate about a first rotation axis R1.

[0069] In an embodiment, the second rotating structure 220 of the hinge structure 200 may be connected to the second housing 120. For example, when the second housing 120 is folded or unfolded, the second rotating structure 220 may rotate about the second rotation axis R2.

[0070] In an embodiment, the hinge structure 200 may further include a first arm shaft 240S, a first arm portion 240, a second arm shaft 250S, a second arm portion 250, a first torque structure 201, a second torque structure 202, connecting rod structures 260 and 270, and a center rod 280.

[0071] In one embodiment, the first arm portion 240 may be coupled to the first arm axis 240S to rotate about the first arm axis 240S. The first arm portion 240 may interact with the rotation of the first rotating structure 210. For example, as the first rotating structure 210 rotates about the first rotation axis R1 during an unfolding or folding operation, the first arm portion 240 may rotate together with the first arm axis 240S about the first arm axis 240S.

[0072] In one embodiment, the second arm 250 can be coupled to the second arm shaft 250S to rotate about the second arm shaft 250S. The second arm 250 can interact with the rotation of the second rotating structure 220. For example, as the second rotating structure 220 rotates about the second rotation axis R2 during an unfolding or folding operation, the second arm 250 can rotate together with the second arm shaft 250S about the second arm shaft 250S. In another embodiment, the first linkage structure 260 can cause the rotation of the first housing 110 and the second housing 120 to interact. When the first housing 110 and the second housing 120 rotate in opposite directions, the first linkage structure 260 can interlock the rotation of the first arm shaft 240S and the second arm shaft 250S. For example, the first linkage structure 260 can be configured to move in the axial direction corresponding to the rotation of the first arm shaft 240S and the second arm shaft 250S.

[0073] In this embodiment, during folding and unfolding operations, the center rod 280 can move in the z / -z axis direction. The center rod 280 can support the rear surface of the folding region 143, allowing the display (e.g., Figure 2a The folding area of ​​the display 140) (e.g., Figure 2a The folded area 143 remains planar in the unfolded state. The center rod 280 can move in the -z axis direction during the folding operation to define a space that accommodates a portion of the folded area 143 of the display 140. In an embodiment, the center rod 280 can move in correspondence with the movement of the linkage structures 260 and 270.

[0074] In one embodiment, the hinge structure 200 may include a first torque structure 201 that provides frictional torque to the first arm shaft 240S. The first torque structure 201 may include a cam structure and an elastic member, and the elastic member may be compressed by the cam structure to generate a frictional torque applied in a direction opposite to the rotational direction of the first arm shaft 240S. The first torque structure 201 can prevent unintended folding or unfolding operations of the electronic device by providing appropriate frictional torque to the first arm shaft 240S.

[0075] In one embodiment, the hinge structure 200 may include a second torque structure 202 that provides frictional torque to the second arm shaft 250S. The second torque structure 202 may include a cam structure and an elastic member, and the elastic member may be compressed by the cam structure to generate a frictional torque applied in a direction opposite to the rotational direction of the second arm shaft 250S. The second torque structure 202 can prevent unintended folding or unfolding operations of the electronic device by providing appropriate frictional torque to the second arm shaft 250S.

[0076] Figure 4 This is a perspective view of a hinge structure according to an embodiment of the present disclosure. Figure 5 This is a rear view of a hinge structure according to an embodiment of the present disclosure. Figure 6 This is an exploded perspective view of a hinge structure according to an embodiment of the present disclosure. Figure 7 This is an exploded perspective view of a hinge structure according to an embodiment of the present disclosure.

[0077] Reference Figures 4 to 7 The axial direction can be defined. The axial direction can be parallel to the extension direction of the first rotation axis R1 and the second rotation axis R2. The first axial direction ① can be the direction facing the fixed structure 230, and the second axial direction ② can be the direction facing the second fixed member 238.

[0078] In an embodiment, the hinge structure 200 may include a fixed structure 230, a first rotating structure 210, a second rotating structure 220, a first fixed member 236, a second fixed member 238, a first arm shaft 240S, a second arm shaft 250S, connecting rod structures 260 and 270, a first arm portion 240, a second arm portion 250, a first torque structure 201, and a second torque structure 202.

[0079] In an embodiment, at least a portion of the fixing structure 230 may be fixedly disposed in the hinge housing (e.g., Figure 1 Inside the hinge housing 130. The first rotating structure 210 and the second rotating structure 220 can be connected to the fixed structure 230 to rotate.

[0080] In one embodiment, the fixing structure 230 may include a first opening region 2391 to which the first guide portion 211 of the first rotating structure 210 is connected. In another embodiment, the fixing structure 230 may include a first guide rail 233 that guides the rotation path of the first rotating structure 210. For example, the first guide rail 233 may be formed on a sidewall of the first opening region 2391. For example, the first guide rail 233 may be formed on at least one of the opposing sidewalls of the first opening region 2391 facing in the axial direction of the first opening region 2391. In another embodiment, the first protrusion 213 of the first rotating structure 210 may be accommodated in the first guide rail 233.

[0081] In one embodiment, the fixing structure 230 may include a second opening region 2392 to which the second guide portion 221 of the second rotating structure 220 is connected. In another embodiment, the fixing structure 230 may include a second guide rail 234 that guides the rotation path of the second rotating structure 220. For example, the second guide rail 234 may be formed on a sidewall of the second opening region 2392. For example, the second guide rail 234 may be formed on at least one of the opposing sidewalls of the second opening region 2392 facing each other in the axial direction of the second opening region 2392. In another embodiment, the second protrusion 223 of the second rotating structure 220 may be accommodated within the second guide rail 234.

[0082] In this embodiment, the first fixing member 236 and the second fixing member 238 can be fixedly disposed in the hinge housing 130. The center rod 280 can be connected to the first fixing member 236 and the second fixing member 238.

[0083] For example, first fixing holes 2362 and 2361 can be formed in the first fixing member 236. The first fixing member 236 can be fixedly connected to the hinge housing (e.g., through the first fixing hole 2362 and the connecting member inserted into the first fixing hole 2362) Figure 1 (Hinge housing 130). For example, the connecting member may include a screw. For example, the screw may extend into the hinge housing 130 through a first retaining hole 2362. For example, the first retaining member 236 may be connected to the center rod 280 through a first hole 2361. A first protrusion 283 of the center rod 280 may be at least partially inserted into the first hole 2361. See reference. Figure 5 and Figure 7The first protrusion 283 of the center rod 280 and the first screw 283a connected to the first protrusion 283 can be inserted into the first hole 2361 of the first fixing member 236.

[0084] For example, a second fixing hole 2382 and a second hole 2381 can be formed in the second fixing member 238. The second fixing member 238 can be fixedly connected to the hinge housing 130 through the second fixing hole 2382 and a connecting member inserted into the second fixing hole 2382. For example, the connecting member can include a screw. For example, the screw can extend into the hinge housing 130 through the second fixing hole 2382. For example, the second fixing member 238 can be connected to the center rod 280 through the second hole 2381. The second protrusion 284 of the center rod 280 can be at least partially inserted into the second hole 2381. See reference. Figure 5 and Figure 7 The second protrusion 284 of the center rod 280 and the second screw 284a connected to the second protrusion 284 can be inserted into the second hole 2381 of the second fixing member 238.

[0085] In one embodiment, the first arm shaft 240S and the second arm shaft 250S can pass through the first fixing member 236, and the first fixing member 236 can support the rotation of the first arm shaft 240S and the second arm shaft 250S. In another embodiment, the first arm shaft 240S and the second arm shaft 250S can pass through the second fixing member 238, and the second fixing member 238 can support the rotation of the first arm shaft 240S and the second arm shaft 250S.

[0086] In an embodiment, the first rotating structure 210 can be configured such that when the first housing (e.g., Figure 1 When the first housing 110 is folded or unfolded, it is positioned relative to the hinge housing (e.g., Figure 1 The fixed structure 230 in the hinge housing 130 rotates along a specific path. In an embodiment, the first rotating structure 210 may include a first guide portion 211 coupled to the fixed structure 230 for rotation, and a first connecting portion 212 coupled to the first housing 110. When the electronic device 100 is folded or unfolded, the first connecting portion 212 may be folded or unfolded together with the first housing 110. In an embodiment, the first rotating structure 210 may include a first protrusion 213 formed in the first guide portion 211. The first protrusion 213 may guide the rotation path of the first rotating structure 210 together with the first guide rail 233.

[0087] In one embodiment, the first arm portion 240 may include a first connecting portion 241, a second connecting portion 242, and a first extension portion 243. In another embodiment, the first arm portion 240 may be slidably connected to the first rotating structure 210 via a first sliding pin 246. The first arm portion 240 may be connected to the first arm shaft 240S via the first connecting portion 241 and the second connecting portion 242 to rotate together with the first arm shaft 240S. For example, the first connecting portion 241 and the second connecting portion 242 may be press-fitted with the first arm shaft 240S.

[0088] In this embodiment, regarding the sliding of the first arm portion 240, the first sliding pin 246 of the first extension 243 can be connected to the first rotating structure 210. For example, at least a portion of the first sliding pin 246 can be accommodated in the first groove 215 of the first rotating structure 210. For example, when the first rotating structure 210 rotates, the first sliding pin 246 can move along the first groove 215. In this embodiment, when the first rotating structure 210 rotates about the first rotation axis R1, the first arm portion 240 can rotate about the first arm axis 240S, and the first arm portion 240 can simultaneously slide relative to the first rotating structure 210. For example, when the first sliding pin 246 is connected to the first rotating structure 210, the first arm portion 240 can slide.

[0089] In this embodiment, the first arm shaft 240S can be coupled to the fixed structure 230 for rotation. For example, the first arm shaft 240S can extend long from the fixed structure 230 in the second axial direction ②. The first arm shaft 240S can extend to pass through the first fixed member 236 and the second fixed member 238. For example, the rotation of the first arm shaft 240S can be supported by the first fixed member 236 and the second fixed member 238. For example, the end of the first arm shaft 240S in the first axial direction ① can be inserted into a recess or opening formed in the fixed structure 230 for rotation. (Refer to...) Figure 4 and Figure 5 A first retaining ring 2491 may be coupled to the end of the first arm shaft 240S in the second axial direction ②. The first retaining ring 2491 may be configured to restrict movement of the first arm shaft 240S in the axial direction. The first retaining ring 2491 may be at least partially inserted into a groove formed on the outer peripheral surface of the first arm shaft 240S. For example, the first retaining ring 2491 may include a C-shaped clip surrounding at least a portion of the first arm shaft 240S. In an embodiment, the first arm shaft 240S may pass through a first connecting portion 241 and a second connecting portion 242 of the first arm portion 240. For example, the first arm shaft 240S may be coupled to the first connecting portion 241 and the second connecting portion 242 to rotate together with them. For example, the first connecting portion 241 and the second connecting portion 242 may be press-fitted with the first arm shaft 240S.

[0090] In this way, when the first rotating structure 210 rotates, the first arm 240 can rotate via the first sliding pin 246. When the first arm 240 rotates, the first arm shaft 240S can rotate via the first connecting part 241 and the second connecting part 242.

[0091] In an embodiment, the second rotating structure 220 can be configured such that when the first housing (e.g., Figure 1 When the first housing 110 is folded or unfolded, it is positioned relative to the hinge housing (e.g., Figure 1 The fixed structure 230 in the hinge housing 130 rotates along a specific path. In an embodiment, the second rotating structure 220 may include a second guide 221 coupled to the fixed structure 230 for rotation, and a second connecting portion 222 connected to the second housing 120. When the electronic device 100 is folded or unfolded, the second connecting portion 222 may be folded or unfolded together with the second housing 120. In an embodiment, the second rotating structure 220 may include a second protrusion 223 formed in the second guide 221. The second protrusion 223 may guide the rotation path of the second rotating structure 220 together with the second guide rail 234.

[0092] In one embodiment, the second arm portion 250 may include a third connecting portion 251, a fourth connecting portion 252, and a second extension portion 253. In another embodiment, the second arm portion 250 may be slidably connected to the second rotating structure 220 via a second sliding pin 256. The second arm portion 250 may also be connected to the second arm shaft 250S via the third connecting portion 251 and the fourth connecting portion 252 to rotate together with the second arm shaft 250S. For example, the third connecting portion 251 and the fourth connecting portion 252 may be press-fitted with the second arm shaft 250S.

[0093] In this embodiment, regarding the sliding of the second arm 250, the second sliding pin 256 of the second extension 253 can be connected to the second rotating structure 220. For example, at least a portion of the second sliding pin 256 can be accommodated in the second groove 225 of the second rotating structure 220. For example, when the second rotating structure 220 rotates, the second sliding pin 256 can move along the second groove 225. In this embodiment, when the second rotating structure 220 rotates about the second rotation axis R2, the second arm 250 can rotate about the second arm axis 250S, and the second arm 250 can simultaneously slide relative to the second rotating structure 220. For example, when the second sliding pin 256 is connected to the second rotating structure 220, the second arm 250 can slide.

[0094] In this embodiment, the second arm shaft 250S can be coupled to the fixed structure 230 for rotation. For example, the second arm shaft 250S can extend long from the fixed structure 230 in the second axial direction ②. The second arm shaft 250S can extend to pass through the first fixed member 236 and the second fixed member 238. For example, the rotation of the second arm shaft 250S can be supported by the first fixed member 236 and the second fixed member 238. For example, the end of the second arm shaft 250S in the first axial direction ① can be inserted into a recess or opening formed in the fixed structure 230 for rotation. (Refer to...) Figure 4 and Figure 5 The second retaining ring 2591 can be coupled to the end of the second arm shaft 250S in the second axial direction ②. The second retaining ring 2591 can be configured to restrict the movement of the second arm shaft 250S in the axial direction. The second retaining ring 2591 can be at least partially inserted into a groove formed in the outer peripheral surface of the second arm shaft 250S. For example, the second retaining ring 2591 may include a C-shaped clip surrounding at least a portion of the second arm shaft 250S. In an embodiment, the second arm shaft 250S can pass through the third connecting portion 251 and the fourth connecting portion 252 of the second arm portion 250. For example, the second arm shaft 250S can be coupled to the third connecting portion 251 and the fourth connecting portion 252 to rotate together with the third connecting portion 251 and the fourth connecting portion 252. For example, the third connecting portion 251 and the fourth connecting portion 252 can be press-fitted with the second arm shaft 250S.

[0095] In this way, when the second rotating structure 220 rotates, the second arm 250 can rotate via the second sliding pin 256. When the second arm 250 rotates, the second arm shaft 250S can rotate via the third connecting part 251 and the fourth connecting part 252.

[0096] According to an embodiment, the first rotating structure 210 and the second rotating structure 220 can be interlocked with each other via the first arm shaft 240S, the second arm shaft 250S, and the connecting rod structures 260 and 270 to rotate in opposite directions at the same angle.

[0097] In an embodiment, the hinge structure 200 may include a first torque structure 201 that provides torque to the first arm shaft 240S, and a second torque structure 202 that provides torque to the second arm shaft 250S.

[0098] In an embodiment, the first torque structure 201 and the second torque structure 202 can provide frictional forces corresponding to the restoring torque of the display 140. For example, in a folded state where at least a portion of the display 140 is bent (e.g., Figure 2b and Figure 2cUnder these conditions, a restoring force can be applied to the display 140, which is intended to return the display 140 to a flat state. The restoring force can apply a restoring torque to the first arm shaft 240S and the second arm shaft 250S in the unfolding direction. For example, refer to... Figure 7 The restoring torque can be applied to the first arm shaft 240S in a counterclockwise direction as the unfolding direction, and can be applied to the second arm shaft 250S in a clockwise direction as the unfolding direction.

[0099] The hinge structure 200 according to an embodiment can be configured to provide a specific frictional torque that counteracts the restoring torque, thereby maintaining the display 140 in a specific folded state. For example, the frictional torque can be proportional to the surface friction between the cam structures, and the surface friction can be increased by the compressed elastic members 295a, 295b, 295c, and 295d. For example, the first torque structure 201 may include first cam structures 244, 245, 291, and 293 that compress or extend the third elastic member 295a and the fourth elastic member 295b. When the third elastic member 295a and the fourth elastic member 295b are compressed, the surface friction between the first cam structures 244, 245, 291, and 293 increases, and the frictional torque increases. For example, the second torque structure 202 may include second cam structures 254, 255, 292, and 294 that compress or extend the fifth elastic member 295c and the sixth elastic member 295d. When the fifth elastic member 295c and the sixth elastic member 295d are compressed, the surface friction between the second cam structures 254, 255, 292 and 294 will increase, and the friction torque will increase.

[0100] In an embodiment, the hinge structure 200 may include a first cam member 290a and a second cam member 290b. A first arm shaft 240S and a second arm shaft 250S may pass through the first cam member 290a. The first cam member 290a may be configured to move linearly along the first arm shaft 240S and the second arm shaft 250S. The first cam member 290a may include a first cam 291 engaging with a first arm cam 244 of the first arm portion 240, and a second cam 292 engaging with a third arm cam 254 of the second arm portion 250. The first arm shaft 240S and the second arm shaft 250S may pass through the second cam member 290b. The second cam member 290b may be configured to move linearly along the first arm shaft 240S and the second arm shaft 250S. The second cam member 290b may include a third cam 293 engaging with a second arm cam 245 of the first arm portion 240, and a fourth cam 294 engaging with a fourth arm cam 255 of the second arm portion 250.

[0101] In an embodiment, the first torque structure 201 may include a first arm cam 244 formed in the first arm portion 240, a first cam 291 of the first cam member 290a, a third elastic member 295a, a fourth elastic member 295b, a third cam 293 of the second cam member 290b, and a second arm cam 245 of the first arm portion 240. Thus, the first arm cam 244 and the second arm cam 245 may be configured to rotate together with the first arm shaft 240S, and the first cam member 290a and the second cam member 290b may be configured to move linearly in the axial direction. For example, the first arm cam 244 and the second arm cam 245 may be referred to as rotary cams, and the first cam 291 and the third cam 293 may be referred to as linear cams. The third elastic member 295a and the fourth elastic member 295b may be compressed or extended by the movement of the first cam member 290a and the second cam member 290b.

[0102] In one embodiment, a third elastic member 295a may be disposed in the first arm shaft 240S. The third elastic member 295a may be disposed between the first cam 291 of the first cam member 290a and the first fixed member 236. The third elastic member 295a may be compressed when the first cam member 290a moves in the second axial direction ②, and may be extended when the first cam member 290a moves in the first axial direction ①. In another embodiment, a fourth elastic member 295b may be disposed in the first arm shaft 240S. The fourth elastic member 295b may be disposed between the third cam 293 of the second cam member 290b and the first fixed member 236. The fourth elastic member 295b may be compressed when the second cam member 290b moves in the first axial direction ①, and may be extended when the second cam member 290b moves in the second axial direction ②.

[0103] In an embodiment, the second torque structure 202 may include a third arm cam 254 formed in the second arm portion 250, a second cam 292 of the first cam member 290a, a fifth elastic member 295c, a sixth elastic member 295d, a fourth cam 294 of the second cam member 290b, and a fourth arm cam 255 of the second arm portion 250. Thus, the third arm cam 254 and the fourth arm cam 255 can be configured to rotate together with the second arm shaft 250S, and the first cam member 290a and the second cam member 290b can be configured to move linearly in the axial direction. For example, the third arm cam 254 and the fourth arm cam 255 may be referred to as rotary cams, and the second cam 292 and the fourth cam 294 may be referred to as linear cams. The fifth elastic member 295c and the sixth elastic member 295d can be compressed or extended by the movement of the first cam member 290a and the second cam member 290b.

[0104] In one embodiment, a fifth elastic member 295c may be disposed in the second arm shaft 250S. The fifth elastic member 295c may be disposed between the second cam 292 of the first cam member 290a and the first fixed member 236. The fifth elastic member 295c may be compressed when the first cam member 290a moves in the second axial direction ②, and may be extended when the first cam member 290a moves in the first axial direction ①. In another embodiment, a sixth elastic member 295d may be disposed in the second arm shaft 250S. The sixth elastic member 295d may be disposed between the fourth cam 294 of the second cam member 290b and the first fixed member 236. The sixth elastic member 295d may be compressed when the second cam member 290b moves in the first axial direction ①, and may be extended when the second cam member 290b moves in the second axial direction ②.

[0105] In one embodiment, linkage structures 260 and 270 can be connected to the first arm shaft 240S and the second arm shaft 250S, and can be configured to move linearly in the axial direction corresponding to the rotation of the first arm shaft 240S and the second arm shaft 250S, respectively. In another embodiment, linkage structures 260 and 270 can interlock the first arm shaft 240S and the second arm shaft 250S with each other, such that the first rotating structure 210 and the second rotating structure 220 rotate in opposite directions at the same angle.

[0106] In an embodiment, the linkage structures 260 and 270 may include a first linkage structure 260 and a second linkage structure 270. The first linkage structure 260 and the second linkage structure 270 may be spaced apart from each other in the axial direction. For example, a first arm 240, a second arm 250, first cam structures 244, 245, 291 and 293, second cam structures 254, 255, 292 and 294, and a first fixing member 236 may be disposed between the first linkage structure 260 and the second linkage structure 270.

[0107] In an embodiment, the first link structure 260 may include a first portion 260a through which a first arm shaft 240S passes, a second portion 260b through which a second arm shaft 250S passes, and a first central portion 260c connecting the first portion 260a and the second portion 260b. For example, the first portion 260a and the second portion 260b may extend from the first central portion 260c in a direction substantially perpendicular to the axial direction.

[0108] In the embodiments, reference is made to Figure 6A first guide groove 261 may be formed in the first portion 260a. A first guide pin 248 of the first arm shaft 240S may be accommodated in the first guide groove 261. When the first arm shaft 240S rotates, the first guide pin 248 may move along the first guide groove 261, and therefore, the first connecting rod structure 260 may move to one side in the axial direction.

[0109] In one embodiment, the first guide groove 261 may have a helical shape around the first arm shaft 240S. The first guide groove 261 may extend in both the circumferential and axial directions of the first arm shaft 240S. The axial extension length of the first guide groove 261 may correspond to the axial movement distance of the first connecting rod structure 260. The circumferential extension length of the first guide groove 261 may correspond to the rotation angle of the first connecting rod structure 260.

[0110] In the embodiments, reference is made to Figure 6 The second guide groove 262 can be formed in the second part 260b. The third guide pin 258 of the second arm shaft 250S can be accommodated in the second guide groove 262. When the second arm shaft 250S rotates, the third guide pin 258 can move along the second guide groove 262, so the second link structure 270 can move to one side in the axial direction.

[0111] In one embodiment, the second guide groove 262 may have a helical shape around the second arm shaft 250S. The second guide groove 262 may extend in both the circumferential and axial directions of the second arm shaft 250S. The axial extension length of the second guide groove 262 may correspond to the axial movement distance of the second link structure 270. The circumferential extension length of the second guide groove 262 may correspond to the rotation angle of the second link structure 270.

[0112] In an embodiment, the first guide groove 261 and the second guide groove 262 may have shapes that are symmetrical to each other with respect to a central axis. The central axis may be defined as an axis spaced equidistant from the first arm shaft 240S and the second arm shaft 250S and parallel to the axial direction. In an embodiment, the first guide groove 261 and the second guide groove 262 may extend the same length in the same axial direction and may extend at the same angle in opposite circumferential directions. For example, in folding and unfolding operations, the first rotating structure 210 and the second rotating structure 220 may rotate in opposite directions. Therefore, the first arm shaft 240S and the second arm shaft 250S may rotate in opposite directions. Thus, the first guide groove 261 and the second guide groove 262 may be symmetrical to each other with respect to the central axis, such that when the first arm shaft 240S and the second arm shaft 250S rotate in opposite directions, the first link structure 260 moves in the same direction.

[0113] For example, refer to Figure 10 and Figure 11The first guide groove 261 can extend a first distance d1 in the axial direction and can extend at a first angle θ1 in the circumferential direction of the first arm shaft 240S. The second guide groove 262 can extend a first distance d1 in the axial direction and can extend at a first angle θ1 in the circumferential direction of the second arm shaft 250S. In an embodiment, because the first arm shaft 240S and the second arm shaft 250S rotate at the same angle, the first angle θ1 and the second angle θ2 can be the same. On the other hand, the first distance d1 and the second distance d2 can be different.

[0114] Therefore, the first linkage structure 260 can interlock the first arm shaft 240S and the second arm shaft 250S with each other, so that the first arm shaft 240S and the second arm shaft 250S rotate in opposite directions but at the same angle.

[0115] In an embodiment, the second link structure 270 may include a third portion 270a through which the first arm shaft 240S passes, a fourth portion 270b through which the second arm shaft 250S passes, and a second central portion 270c connecting the third portion 270a and the fourth portion 270b. For example, the third portion 270a and the fourth portion 270b may extend from the second central portion 270c in a direction substantially perpendicular to the axial direction.

[0116] In the embodiments, reference is made to Figure 6 A third guide groove 271 can be formed in the third part 270a. A second guide pin 249 of the first arm shaft 240S can be accommodated in the third guide groove 271. When the first arm shaft 240S rotates, the second guide pin 249 can move along the third guide groove 271, so the second link structure 270 can move to one side in the axial direction.

[0117] In one embodiment, the third guide groove 271 may have a helical shape surrounding the first arm shaft 240S. The third guide groove 271 may extend in both the circumferential and axial directions of the first arm shaft 240S. The axial extension length of the first guide groove 261 may correspond to the axial movement distance of the second link structure 270. The circumferential extension length of the third guide groove 271 may correspond to the rotation angle of the second link structure 270.

[0118] In the embodiments, reference is made to Figure 6 The fourth guide groove 272 can be formed in the fourth part 270b. The fourth guide pin 259 of the second arm shaft 250S can be accommodated in the fourth guide groove 272. When the second arm shaft 250S rotates, the fourth guide pin 259 can move along the fourth guide groove 272, so the second link structure 270 can move to one side in the axial direction.

[0119] In one embodiment, the fourth guide groove 272 may have a helical shape around the second arm shaft 250S. The second guide groove 262 may extend in both the circumferential and axial directions of the second arm shaft 250S. The axial extension length of the second guide groove 262 may correspond to the axial movement distance of the second link structure 270. The circumferential extension length of the fourth guide groove 272 may correspond to the rotation angle of the second link structure 270.

[0120] In an embodiment, the third guide groove 271 and the fourth guide groove 272 may have shapes that are symmetrical to each other with respect to a central axis. The central axis may be defined as an axis spaced equidistant from the first arm shaft 240S and the second arm shaft 250S and parallel to the axial direction. In an embodiment, the third guide groove 271 and the fourth guide groove 272 may extend the same length in the same axial direction and may extend at the same angle in opposite circumferential directions. For example, in folding and unfolding operations, the first rotating structure 210 and the second rotating structure 220 may rotate in opposite directions. Therefore, the first arm shaft 240S and the second arm shaft 250S may rotate in opposite directions. Thus, the third guide groove 271 and the fourth guide groove 272 may be symmetrical to each other with respect to a central axis, such that when the first arm shaft 240S and the second arm shaft 250S rotate in opposite directions, the second link structure 270 moves in the same direction.

[0121] For example, refer to Figure 10 and Figure 11 The third guide groove 271 can extend a second distance d2 in the axial direction and can extend at a second angle θ2 in the circumferential direction of the first arm shaft 240S. The fourth guide groove 272 can extend a second distance d2 in the axial direction and can extend at a second angle θ2 in the circumferential direction of the second arm shaft 250S. In the embodiment, because the first arm shaft 240S and the second arm shaft 250S rotate at the same angle, the first angle θ1 and the second angle θ2 can be the same. On the other hand, the first distance d1 and the second distance d2 can be different.

[0122] Therefore, the second linkage structure 270 can interlock the first arm shaft 240S and the second arm shaft 250S with each other, so that the first arm shaft 240S and the second arm shaft 250S rotate in opposite directions but at the same angle.

[0123] In an embodiment, the central rod 280 may be configured to support the rear surface of the display 140, such that the display (e.g., Figure 2a The folding area of ​​the display 140) (e.g., Figure 2aThe folded region 143 is maintained as a plane in the unfolded state. In various embodiments, the central rod 280 may be configured to support the folded region 143 of the display 140, which is at least partially bent in the folded state. To achieve this, the central rod 280 may be configured to move in the z / -z axis direction during folding and unfolding operations. In embodiments, the central rod 280 may be interlocked with the movement of the first linkage structure 260 and the second linkage structure 270.

[0124] In this embodiment, the central rod 280 can be connected to the first fixing member 236, the second fixing member 238, the first connecting rod structure 260, and the second connecting rod structure 270. (Refer to...) Figure 4 When viewed from above, the hinge structure 200 may at least partially overlap with the first central portion 260c of the first link structure 260, the second central portion 270c of the second link structure 270, the first fixing member 236, and the second fixing member 238. In an embodiment, the center rod 280 may extend in the axial direction.

[0125] Reference Figure 7 The center rod 280 may include a first protrusion 283, a second protrusion 284, a first inclined protrusion 281 and a second inclined protrusion 282 formed on the rear surface of the center rod 280.

[0126] In an embodiment, the first elastic member 288 may be disposed in the first protrusion 283. For example, the first elastic member 288 may surround at least a portion of the first protrusion 283.

[0127] In the embodiments, reference is made to Figure 5 The first screw 283a can be connected to the first protrusion 283. (See reference...) Figure 7 The first protrusion 283 can be at least partially inserted into the first hole 2361 of the first fixing member 236. Then, at least a portion of the first screw 283a can be located inside the first hole 2361. The head of the first screw 283a can support one side of the first elastic member 288. For example, the head of the first screw 283a can be referred to as a flange.

[0128] In an embodiment, the second elastic member 289 may be disposed in the second protrusion 284. For example, the second elastic member 289 may surround at least a portion of the second protrusion 284.

[0129] In the embodiments, reference is made to Figure 5 The second screw 284a can be connected to the second protrusion 284. (See reference...) Figure 7The second protrusion 284 can be at least partially inserted into the second hole 2381 of the second fixing member 238. Then, at least a portion of the second screw 284a can be located inside the second hole 2381. The head of the second screw 284a can support one side of the second elastic member 289. For example, the head of the second screw 284a can be referred to as a flange.

[0130] In this embodiment, the first protrusion 283 and the second protrusion 284 can be extended to a greater extent than the z-axis displacement to which the central rod 280 can be moved. Therefore, when the first protrusion 283 and the second protrusion 284 are respectively accommodated in the first hole 2361 and the second hole 2381, the central rod 280 can move in the z-axis direction. In other words, the first protrusion 283 and the second protrusion 284 can guide the movement of the central rod 280.

[0131] In one embodiment, the first elastic member 288 may be located at least partially within the first hole 2361 of the first fixing member 236. The first elastic member 288 may provide elastic force to the central rod 280. For example, the first elastic member 288 may be configured to be compressed as the central rod 280 moves in the z-axis direction and to be stretched as the central rod 280 moves in the -z-axis direction.

[0132] In an embodiment, the second elastic member 289 may be located at least partially within the second hole 2381 of the second fixing member 238. The second elastic member 289 may provide elastic force to the central rod 280. For example, the second elastic member 289 may be configured to be compressed as the central rod 280 moves in the z-axis direction and to be stretched as the central rod 280 moves in the -z-axis direction.

[0133] In the embodiments, reference is made to Figure 7 The first inclined protrusion 281 may include a third inclined surface 281a. The third inclined surface 281a may at least partially contact the first inclined surface 264 formed in the first central portion 260c of the first link structure 260. When the first link structure 260 moves in the axial direction, the third inclined surface 281a may be pressed against the first inclined surface 264 in the z-axis direction.

[0134] In the embodiments, reference is made to Figure 7 The second inclined protrusion 282 may include a fourth inclined surface 282a. The fourth inclined surface 282a may at least partially contact the second inclined surface 274 formed in the second central portion 270c of the second link structure 270. When the second link structure 270 moves in the axial direction, the fourth inclined surface 282a may be pressed against the second inclined surface 274 in the z-axis direction.

[0135] In an embodiment, the central rod 280 may be configured to move in the z-axis and -z-axis directions by the movement of the first link structure 260 and the second link structure 270, and may also move by the elastic force of the first elastic member 288 and the second elastic member 289.

[0136] Figure 8 (a), (b) and (c) are views illustrating the rotational operation of the hinge structure according to various embodiments of the present disclosure. Figure 8 (a), (b) and (c) are when in Figure 3 The view of the hinge structure when viewed from the direction "A" shown.

[0137] Figure 8 (a) is a view showing the hinge structure in the unfolded state. Figure 8 (b) is a view showing the hinge structure in a folded state. Figure 8 (c) is a view showing the hinge structure in a fully folded state.

[0138] refer to Figure 8 In embodiments (a), (b), and (c), the first guide rail 233 and the second guide rail 234 may be formed in the fixed structure 230. In embodiments, the first guide rail 233 may have a substantially arcuate shape. For example, the center of the arc of the first guide rail 233 may be a first axis of rotation R1. That is, the first guide rail 233 may guide the first rotating structure 210 such that the first rotating structure 210 rotates along a rotation path centered on the first axis of rotation R1. In embodiments, the second guide rail 234 may have a substantially arcuate shape. For example, the center of the arc of the second guide rail 234 may be a second axis of rotation R2. That is, the second guide rail 234 may guide the second rotating structure 220 such that the second rotating structure 220 rotates along a rotation path centered on the second axis of rotation R2.

[0139] In an embodiment, the first rotating structure 210 may include a first connecting portion 212 and a first guiding portion 211. The first guiding portion 211 may have a substantially cylindrical shape. For example, the cross-section of the first guiding portion 211 may have a substantially arcuate shape. In an embodiment, the first rotating structure 210 may rotate about a first rotation axis R1 while the first protrusion 213 of the first guiding portion 211 is accommodated in the first guide rail 233 of the fixing structure 230. For example, when the first connecting portion 212 is folded or unfolded together with the first housing 110, the first rotating structure 210 may rotate along an arcuate rotation path centered on the first rotation axis R1.

[0140] In an embodiment, the second rotating structure 220 may include a second connecting portion 222 and a second guiding portion 221. The second guiding portion 221 may have a substantially cylindrical shape. For example, the cross-section of the second guiding portion 221 may have a substantially arcuate shape. In an embodiment, the second rotating structure 220 may rotate about a second rotation axis R2 while the second protrusion 223 is accommodated in the second guide rail 234. For example, when the second connecting portion 222 is folded or unfolded together with the second housing 120, the second rotating structure 220 may rotate along an arcuate rotation path centered on the second rotation axis R2.

[0141] In one embodiment, the first rotation axis R1 and the second rotation axis R2 may be parallel to the axial direction of the hinge structure 200. In another embodiment, the first rotation axis R1 and the second rotation axis R2 may be formed at positions spaced apart from the first connecting portion 212 of the first rotating structure 210 and the second connecting portion 222 of the second rotating structure 220 in the z-axis direction.

[0142] Reference Figure 8 In (a), the first connecting portion 212 can restrict the direction in which the first rotating structure 210 can be rotated to one direction in the unfolded state. For example, the first end of the first guide rail 233 can be opened, and its other second end can be covered by the first connecting portion 212. Therefore, the first rotating structure 210 can rotate in the unfolded state about the first rotation axis R1 in the clockwise direction as shown in the figure, and cannot rotate in the counterclockwise direction.

[0143] Reference Figure 8 In (a), the second connecting portion 222 can restrict the direction in which the second rotating structure 220 can be rotated to one direction in the unfolded state. For example, the third end of the second guide rail 234 can be opened, and its other fourth end can be covered by the second connecting portion 222. Therefore, the second rotating structure 220 can rotate in the unfolded state about the second rotation axis R2 in the counterclockwise direction as shown in the figure, and cannot rotate in the clockwise direction.

[0144] Figure 9 (a), (b) and (c) are views illustrating the rotational and sliding operations of the arm of the hinge structure and the rotating structure according to various embodiments of the present disclosure. Figure 9 (a), (b) and (c) are when in Figure 3 The view of the hinge structure is shown when viewed from the direction indicated by "B".

[0145] Figure 9 (a) is a view showing the hinge structure in the unfolded state. Figure 9 (b) is a view showing the hinge structure in a folded state. Figure 9 (c) is a view showing the hinge structure in a fully folded state.

[0146] Reference Figure 9 As shown in (a), (b), and (c), when the hinge structure 200 is folded or unfolded, the rotating structures 210 and 220, as well as the arms 240 and 250, can rotate about different axes. For example, the rotating structures 210 and 220, as well as the arms 240 and 250, can rotate along different rotation paths. Due to the difference in the rotation paths of the rotating structures 210 and 220, as well as the arms 240 and 250, the arms 240 and 250 can slide when the hinge structure 200 is folded or unfolded.

[0147] In this embodiment, the first rotating structure 210 can rotate about a first rotation axis R1 in a first rotation direction. For example, in a folding operation, the first rotating structure 210 can rotate clockwise. For example, referring to the unfolded state, the point where the first sliding pin 246 of the first rotating structure 210 is located can be defined as the first point A1. In both the folding and unfolding operations, the first point A1 of the first rotating structure 210 can move along the first rotation path PA1.

[0148] Reference Figure 9 In (a), (b), and (c), the first arm 240 and the first sliding pin 246 can rotate about the first arm axis 240S. For example, during a folding operation, the first arm 240 and the first sliding pin 246 can rotate clockwise. For example, in the unfolded state, the first sliding pin 246 can be located at the first point A1, while in the folded state, the first sliding pin 246 can be located at a position spaced apart from the first point A1 in a direction perpendicular to the axial direction. The first sliding pin 246 can move along the second rotation path PA2 during both the folding and unfolding operations.

[0149] In various embodiments, the first rotation path PA1 and the second rotation path PA2 can be different. For example, the first rotation axis R1 and the first arm axis 240S can be parallel to each other but not coincident, and the rotation radii of the first rotation structure 210 and the first arm 240 can be inconsistent with each other.

[0150] Therefore, during folding and unfolding operations, the first arm 240 and the first sliding pin 246 can slide relative to the first rotating structure 210. Since the first sliding pin 246 is housed in the first groove 215 of the first rotating structure 210, the sliding operation of the first sliding pin 246 and the first arm 240 can be guided. In this embodiment, when performing a folding operation from the unfolded state, the distance between the first sliding pin 246 and the first point A1 increases. When performing an unfolding operation from the fully folded state, the distance between the first sliding pin 246 and the first point A1 decreases.

[0151] In this embodiment, the second rotating structure 220 can rotate about the second rotation axis R2 in the second rotation direction. For example, in a folding operation, the second rotating structure 220 can rotate counterclockwise. For example, referring to the unfolded state, the point where the second sliding pin 256 of the second rotating structure 220 is located can be defined as the second point A2. In both the folding and unfolding operations, the second point A2 can move along the third rotation path PA3.

[0152] In this embodiment, the second arm 250 and the second sliding pin 256 are rotatable about the second arm axis 250S. For example, during a folding operation, the second arm 250 and the second sliding pin 256 can rotate counterclockwise. For example, in the unfolded state, the second sliding pin 256 can be located at the second point A2, while in the folded state, the second sliding pin 256 can be located at a position spaced apart from the second point A2 in a direction perpendicular to the axial direction. The second sliding pin 256 can move along a fourth rotation path PA4 during both the folding and unfolding operations.

[0153] In various embodiments, the third rotation path PA3 and the fourth rotation path PA4 can be different. For example, the second rotation axis R2 and the second arm axis 250S can be parallel to each other but not coincident, and the rotation radii of the second rotation structure 220 and the second arm 250 can be inconsistent with each other.

[0154] Therefore, during folding and unfolding operations, the second arm 250 and the second sliding pin 256 can slide relative to the second rotating structure 220. Since the second sliding pin 256 is housed in the second groove 225 of the second rotating structure 220, the sliding operation of the second sliding pin 256 and the second arm 250 can be guided. In this embodiment, when performing a folding operation from the unfolded state, the distance between the second sliding pin 256 and the second point A2 increases. When performing an unfolding operation from the fully folded state, the distance between the second sliding pin 256 and the second point A2 decreases.

[0155] Figure 10 This is a view showing the linkage structure and central rod of a hinge structure in an unfolded state according to an embodiment of the present disclosure. Figure 11 This is a view showing the linkage structure and center rod of a hinge structure in a fully folded state according to an embodiment of the present disclosure.

[0156] refer to Figure 10 and Figure 11In this embodiment, when the electronic device 100 and / or the hinge structure 200 perform folding and unfolding operations, the link structures 260 and 270 can be configured to move in the axial direction. The first link structure 260 and the second link structure 270 can be positioned axially spaced apart from each other. The first link structure 260 can be located at a position spaced apart from the second link structure 270 in a first axial direction ①. The second link structure 270 can be located at a position spaced apart from the first link structure 260 in a second axial direction ②.

[0157] In the embodiment, the first connecting portion 241 and the second connecting portion 242 of the first arm portion 240, the third connecting portion 251 and the fourth connecting portion 252 of the second arm portion 250, the first fixing member 236, the first cam member 290a, the second cam member 290b, and the elastic members 295a, 295b, 295c and 295d can be disposed between the first link structure 260 and the second link structure 270.

[0158] In an embodiment, the first link structure 260 may be configured such that a first portion 260a is coupled to a first arm shaft 240S and a second portion 260b is coupled to a second arm shaft 250S. For example, the first link structure 260 may be axially movable along the first arm shaft 240S and the second arm shaft 250S. A first guide pin 248 of the first arm shaft 240S may be located in a first guide groove 261 formed in the first portion 260a. A third guide pin 258 of the second arm shaft 250S may be located in a second guide groove 262 formed in the second portion 260b.

[0159] In an embodiment, the first link structure 260 may be disposed between the fixed structure 230 and the arms 240 and 250. For example, the first part 260a of the first link structure 260 may be disposed between the fixed structure 230 and the first connecting part 241 of the first arm 240, and the second part 260b may be disposed between the fixed structure 230 and the third connecting part 251 of the second arm 250.

[0160] In an embodiment, the first link structure 260 may be configured to be spaced apart from the fixed structure 230 and / or the arms 240 and 250 in the axial direction. For example, referring to the deployment state... Figure 10 The first link structure 260 can at least partially contact the fixed structure 230 and can be spaced apart by a first distance d1 from the first connecting portion 241 of the first arm 240 and the third connecting portion 251 of the second arm 250. The first distance d1 can be substantially the same as or greater than the axial displacement of the first link structure 260. For example, referring to the state corresponding to full folding. Figure 11The first link structure 260 may at least partially contact the first connecting portion 241 of the first arm 240 and the third connecting portion 251 of the second arm 250, and may be spaced apart from the fixed structure 230 by a first distance d1. The first distance d1 may be substantially the same as or greater than the axial displacement of the first link structure 260. For example, the fixed structure 230 and the arms 240 and 250 may function as stops that limit the maximum distance of movement of the first link structure 260.

[0161] In the embodiments, in Figure 10 In the unfolded state, the first guide pin 248 may be located at the first end 261a of the first guide groove 261, and the third guide pin 258 may be located at the first end 262a of the second guide groove 262. In various embodiments, the unfolded state may include a state in which the first portion 260a and the second portion 260b of the first link structure 260 are at least partially in contact with the fixed structure 230.

[0162] In the embodiments, in Figure 11 In the fully folded state, the first guide pin 248 may be located at the second end 261b of the first guide groove 261, and the third guide pin 258 may be located at the second end 262b of the second guide groove 262. In various embodiments, the fully folded state may include a state in which the first portion 260a of the first link structure 260 at least partially contacts the first connecting portion 241 of the first arm 240 and the second portion 260b of the first link structure 260 at least partially contacts the third connecting portion 251 of the second arm 250.

[0163] In an embodiment, the distance between the first end 261a and the second end 261b of the first guide groove 261 and the first end 262a and the second end 262b of the second guide groove 262, measured in the axial direction, can be substantially the same as the first distance d1.

[0164] In an embodiment, the second link structure 270 may be configured such that a third portion 270a is connected to the first arm shaft 240S and a fourth portion 270b is connected to the second arm shaft 250S. For example, the second link structure 270 may be axially movable along the first arm shaft 240S and the second arm shaft 250S. A second guide pin 249 of the first arm shaft 240S may be located in a third guide groove 271 formed in the third portion 270a. A fourth guide pin 259 of the second arm shaft 250S may be located in a fourth guide groove 272 formed in the fourth portion 270b.

[0165] In an embodiment, the second link structure 270 may be disposed between the second fixing member 238 and the arms 240 and 250. For example, a third portion 270a of the second link structure 270 may be disposed between the second fixing member 238 and the second connecting portion 242 of the first arm 240, and a fourth portion 270b may be disposed between the second fixing member 238 and the fourth connecting portion 252 of the second arm 250.

[0166] In an embodiment, the second link structure 270 may be configured to be spaced apart from the second fixing member 238 and / or arms 240 and 250 in the axial direction. For example, referring to the deployment state... Figure 10 The second link structure 270 can at least partially contact the second fixing member 238 and can be spaced apart from the second connecting portion 242 of the first arm 240 and the fourth connecting portion 252 of the second arm 250 by a second distance d2. The second distance d2 can be substantially the same as or greater than the axial displacement of the second link structure 270. For example, referring to the state corresponding to full folding. Figure 11 The second link structure 270 may at least partially contact the second connecting portion 242 of the first arm 240 and the fourth connecting portion 252 of the second arm 250, and may be spaced apart from the second fixing member 238 by a second distance d2. The second distance d2 may be substantially the same as or greater than the axial displacement of the second link structure 270. For example, the second fixing member 238 and the arms 240 and 250 may function as a stop to limit the maximum distance of movement of the second link structure 270.

[0167] In the embodiments, Figure 10 In the unfolded state, the second guide pin 249 may be located at the first end 271a of the third guide groove 271, and the fourth guide pin 259 may be located at the first end 272a of the fourth guide groove 272. In various embodiments, the unfolded state may include a state in which the third portion 270a and the fourth portion 270b of the second linkage structure 270 are at least partially in contact with the second fixing member 238.

[0168] In the embodiments, in Figure 11 In the fully folded state, the second guide pin 249 may be located at the second end 271b of the third guide groove 271, and the fourth guide pin 259 may be located at the second end 272b of the fourth guide groove 272. In various embodiments, the fully folded state may include a state in which the third portion 270a of the second link structure 270 at least partially contacts the second connecting portion 242 of the first arm 240, and the fourth portion 270b of the second link structure 270 at least partially contacts the fourth connecting portion 252 of the second arm 250.

[0169] In an embodiment, the distances between the first end 271a and the second end 271b of the third guide groove 271 and between the first end 272a and the second end 272b of the fourth guide groove 272, measured in the axial direction, can be substantially the same as the second distance d2.

[0170] In various embodiments, the first distance d1 and the second distance d2 can be the same. For example, the displacement of the first link structure 260 and the displacement of the second link structure 270 can be the same. However, the displacement of the first link structure 260 (e.g., the first distance d1) and the displacement of the second link structure 270 (e.g., the second distance d2) are not limited to being the same. For example, the second link structure 270 can be configured to have a larger displacement in the axial direction than the first link structure 260. Then, the third guide groove 271 and the fourth guide groove 272 of the second link structure 270 can extend longer in the axial direction, and considering the increased displacement, the second fixing member 238 and the arms 240 and 250 can be set to have a larger distance.

[0171] Referencing hinge structure 200 from Figure 10 The unfolded state shown has changed to Figure 11 In the folding operation shown, when viewed in the second axial direction ②, the first rotating structure 210, the first arm portion 240, and the first arm shaft 240S can rotate clockwise. The first guide pin 248 and the second guide pin 249 provided on the first arm shaft 240S can rotate clockwise. When viewed in the second axial direction ②, the second rotating structure 220, the second arm portion 250, and the second arm shaft 250S can rotate counterclockwise. The third guide pin 258 and the fourth guide pin 259 provided on the second arm shaft 250S can rotate counterclockwise. The first link structure 260 can be configured to move in the second axial direction ②, and the second link structure 270 can be configured to move in the first axial direction ①. In this embodiment, the center rod 280 can move in the -z-axis direction during the folding operation. For example, the center rod 280 can move in the -z-axis direction while the second protrusion 284 of the center rod 280 is accommodated in the second hole 2381 of the second fixing member 238.

[0172] Referencing hinge structure 200 from Figure 11 The folding state shown has changed to Figure 10In the unfolded state shown, when viewed in the second axial direction ②, the first rotating structure 210, the first arm portion 240, and the first arm shaft 240S can rotate counterclockwise. The first guide pin 248 and the second guide pin 249 provided on the first arm shaft 240S can rotate counterclockwise. When viewed in the second axial direction ②, the second rotating structure 220, the second arm portion 250, and the second arm shaft 250S can rotate clockwise. The third guide pin 258 and the fourth guide pin 259 provided on the second arm shaft 250S can rotate clockwise. The first link structure 260 can be configured to move in the first axial direction ①, and the second link structure 270 can be configured to move in the second axial direction ②. In this embodiment, the center rod 280 can move in the z-axis direction during the folding operation. For example, the center rod 280 can move in the z-axis direction while the second protrusion 284 of the center rod 280 is accommodated in the second hole 2381 of the second fixing member 238.

[0173] In the embodiments, the moving directions of the first link structure 260 and the second link structure 270 can be related to the extending directions of the guide grooves 261, 262, 271, and 272. For example, the second end 261b of the first guide groove 261 and the second end 262b of the second guide groove 262 of the first link structure 260 can be located in the first axial direction ① of the first ends 261a and 262a. Therefore, the first link structure 260 can move in the second axial direction ② during the folding operation. For example, the second end 271b of the third guide groove 271 and the second end 272b of the fourth guide groove 272 of the second link structure 270 can be located in the second axial direction ② of the first ends 271a and 272a. Therefore, the second link structure 270 can move in the first axial direction ① during the folding operation.

[0174] Figure 10 and Figure 11 The first link structure 260 and the second link structure 270 are shown to move in opposite directions; however, the hinge structure 200 according to the embodiments disclosed herein is not limited to moving in opposite directions. In various embodiments, the first link structure 260 and the second link structure 270 may be configured to move in the same direction. In embodiments, guide slots 261 and 262 of the first link structure 260 and guide slots 271 and 272 of the second link structure 270 may extend in the same direction.

[0175] Figure 12 This is a view showing the linkage structure of the hinge structure in the unfolded state according to an embodiment of the present disclosure. Figure 13 This is a view showing the linkage structure of the hinge structure in a fully folded state according to an embodiment of the present disclosure.

[0176] refer to Figure 12 and Figure 13 In one embodiment, a first opening 263 may be formed in a first central portion 260c of the first link structure 260. A portion of the sidewall of the first opening 263 may include a first inclined surface 264. The first inclined surface 264 may at least partially contact a third inclined surface 281a of the first inclined protrusion 281. In one embodiment, the first inclined surface 264 may be formed to be inclined in the -z-axis direction as it ascends in the first axial direction ①.

[0177] In one embodiment, the second opening 273 may be formed in the second central portion 270c of the second link structure 270. A portion of the sidewall of the second opening 273 may include a second inclined surface 274. The second inclined surface 274 may at least partially contact the fourth inclined surface 282a of the second inclined protrusion 282. In one embodiment, the second inclined surface 274 may be formed to be inclined in the z-axis direction as it ascends in the first axial direction ①.

[0178] At least a portion of the first protrusion 283 and the first elastic member 288 may be disposed within the first hole 2361 of the first fixing member 236. A first stepped portion 2363 may be formed on the inner surface of the first hole 2361, the first stepped portion 2363 facing the head of the first flange 283b of the first protrusion 283 or the first screw 283a in the z-axis direction. The first stepped portion 2363 may support the first elastic member 288.

[0179] In one embodiment, at least a portion of the second protrusion 284 and the second elastic member 289 may be disposed within the second hole 2381 of the second fixing member 238. A second stepped portion 2383 may be formed on the inner surface of the second hole 2381, the second stepped portion 2383 facing the head of the second flange 284b of the second protrusion 284 or the second screw 284a in the z-axis direction. The second stepped portion 2383 may support the second elastic member 289.

[0180] In one embodiment, the central rod 280 may be connected to the first link structure 260, the second link structure 270, the first fixing member 236, and the second fixing member 238 to move in the z-axis direction. In another embodiment, the central rod 280 may include a first inclined protrusion 281, a second inclined protrusion 282, a first protrusion 283, and a second protrusion 284 protruding in the z-axis direction.

[0181] In an embodiment, the center rod 280 may be configured such that the first inclined protrusion 281 is at least partially accommodated in the first opening 263 of the first link structure 260, the second inclined protrusion 282 is at least partially accommodated in the second opening 273 of the second link structure 270, the first protrusion 283 is at least partially accommodated in the first hole 2361 of the first fixing member 236, and the second protrusion 284 is at least partially accommodated in the second hole 2381 of the second fixing member 238.

[0182] In an embodiment, the first protrusion 283 may include a first flange 283b formed at its -z-axis end. The first flange 283b may support one side of the first elastic member 288. According to various embodiments, the first protrusion 283 may include a first protruding boss and a first screw 283a coupled to the first protruding boss. The head of the first screw 283a may define the first flange 283b. However, the first protrusion 283 is not limited to being formed by the coupling of the first protruding boss and the first screw 283a, and the first protrusion 283 may include various stepped structures or flange structures that can support the first elastic member 288.

[0183] In an embodiment, the second protrusion 284 may include a second flange 284b formed at its -z-axis end. The second flange 284b may support one side of the second elastic member 289. According to various embodiments, the second protrusion 284 may include a second protruding boss and a second screw 284a coupled to the second protruding boss. The head of the second screw 284a may define the second flange 284b. However, the second protrusion 284 is not limited to being formed by the coupling of the second protruding boss and the second screw 284a, and the second protrusion 284 may include various stepped structures or flange structures that can support the second elastic member 289.

[0184] In embodiments, the first elastic member 288 may be configured to surround at least a portion of the first protrusion 283. One side of the first elastic member 288 may be supported by the head of the first flange 283b of the first protrusion 283 or the first screw 283a, and the opposite side may be supported by the first stepped portion 2363 of the first hole 2361 of the first fixing member 236. For example, the first stepped portion 2363 may face the head of the first flange 283b of the first protrusion 283 or the first screw 283a in the z-axis direction. In various embodiments, the first elastic member 288 may be Figure 12 In its unfolded state, it is in a compressed state, and compared to its unfolded state, it can... Figure 13In its fully folded state, it is in an extended state. For example, compared to the equilibrium state, the first elastic member 288 can be in a further compressed state in both the unfolded and fully folded states. In an embodiment, the first elastic member 288 can be configured to be supported by the first step portion 2363 in the unfolded state and to press the first flange 283b of the first protrusion 283 in the -z axis direction. Therefore, the center rod 280 can move a specific height "h" in the -z axis direction in the fully folded state, and can also be in the folded state (e.g., Figure 2b ) or fully folded state (e.g., Figure 2c The space provided below the folded area 143 of the display 140 is the space where it is located.

[0185] In embodiments, the second elastic member 289 may be configured to surround at least a portion of the second protrusion 284. One side of the second elastic member 289 may be supported by the head of the second flange 284b or the second screw 284a of the second protrusion 284, and the opposite side may be supported by the second stepped portion 2383 of the second hole 2381 of the second fixing member 238. For example, the second stepped portion 2383 may face the head of the second flange 284b or the second screw 284a of the second protrusion 284 in the z-axis direction. In various embodiments, the second elastic member 289 may be Figure 12 In its unfolded state, it is in a compressed state, and compared to its unfolded state, it can... Figure 13 In its fully folded state, it is in an extended state. For example, compared to the equilibrium state, the second elastic member 289 can be in a further compressed state in both the unfolded and fully folded states. In an embodiment, the second elastic member 289 can be configured to be supported by the second step portion 2383 in the unfolded state and to press the second flange 284b of the second protrusion 284 in the -z axis direction. Therefore, the center rod 280 can move a specific height "h" in the -z axis direction in the fully folded state, and can also be in the folded state (e.g., Figure 2b ) or fully folded state (e.g., Figure 2c Provide a display (e.g.) below Figure 2b The folding area of ​​the display 140) (e.g., Figure 2b The space where the folded area 143 is located.

[0186] In one embodiment, the first inclined protrusion 281 may include a third inclined surface 281a that at least partially contacts the first inclined surface 264 of the first link structure 260. The third inclined surface 281a may be configured to be inclined in the -z-axis direction as it travels in the first axial direction ①. The third inclined surface 281a and the first inclined surface 264 may be in at least partial surface contact with each other. In various embodiments, the inclination direction of the third inclined surface 281a may be related to the orientation of the first inclined surface 264 of the first link structure 260 and the direction of movement of the first link structure 260. For example, the third inclined surface 281a may be inclined such that the center rod 280 moves in the -z-axis direction during a folding operation. For example, the inclination directions of the third inclined surface 281a and the first inclined surface 264 may be set differently depending on the direction of movement of the first link structure 260.

[0187] In an embodiment, the second inclined protrusion 282 may include a fourth inclined surface 282a that at least partially contacts the second inclined surface 274 of the second link structure 270. The fourth inclined surface 282a may be formed to be inclined in the -z-axis direction as it ascends in the first axial direction ①. The fourth inclined surface 282a and the second inclined surface 274 may be at least partially in surface contact with each other. In various embodiments, the inclination direction of the fourth inclined surface 282a may be related to the orientation of the second inclined surface 274 of the second link structure 270 and the direction of movement of the second link structure 270. For example, the fourth inclined surface 282a may be inclined such that the center rod 280 moves in the -z-axis direction during a folding operation. For example, the inclination directions of the fourth inclined surface 282a and the second inclined surface 274 may be set differently depending on the direction of movement of the second link structure 270.

[0188] In one embodiment, the hinge structure 200 can be from... Figure 12 The unfolded state shown is folded to Figure 13 The folded state is shown. During the folding operation, the first rotating structure 210, the first arm 240, and the first arm shaft 240S can rotate clockwise. During the folding operation, the second rotating structure 220, the second arm 250, and the second arm shaft 250S can rotate counterclockwise. Referring to the above... Figure 10 and Figure 11The first link structure 260 can move in the second axial direction ② via the first guide pin 248 and the third guide pin 258. The compressed first elastic member 288 can press the first flange 283b of the first protrusion 283 in the -z axis direction. Then, the first inclined surface 264 can move along the third inclined surface 281a in the second axial direction ②, and the third inclined surface 281a can move along the first inclined surface 264 in the -z axis direction. In this way, by pressing the first elastic member 288 and moving the first inclined surface 264 of the first link structure 260, the center rod 280 can move in the -z axis direction. Referring to the above. Figure 10 and Figure 11 The second link structure 270 can move in the first axial direction ① via the second guide pin 249 and the fourth guide pin 259. The compressed second elastic member 289 can press the second flange 284b of the second protrusion 284 in the -z axis direction. Then, the second inclined surface 274 can move along the fourth inclined surface 282a in the first axial direction ①, and the fourth inclined surface 282a can move along the second inclined surface 274 in the -z axis direction. In this way, by pressing the second elastic member 289 and moving the second inclined surface 274 of the second link structure 270, the center rod 280 can move in the -z axis direction. In the embodiment, the center rod 280 can move a specific height "h" in the -z axis direction during the folding operation, thus providing a space for a display (e.g., Figure 2b The folding area of ​​the display 140) (e.g., Figure 2b The space of the folded area 143).

[0189] In one embodiment, the hinge structure 200 can be from... Figure 13 The fully folded state shown unfolds to Figure 12 The unfolded state is shown. During the unfolding operation, the first rotating structure 210, the first arm 240, and the first arm shaft 240S can rotate counterclockwise. During the unfolding operation, the second rotating structure 220, the second arm 250, and the second arm shaft 250S can rotate clockwise.

[0190] Referring to the above Figure 10 and Figure 11The first link structure 260 can move in the first axial direction ① via the first guide pin 248 and the third guide pin 258. Through the movement of the first link structure 260, the first inclined surface 264 can press against the third inclined surface 281a in the z-axis direction. Then, the relatively elongated first elastic member 288 can be gradually compressed while performing the unfolding operation. The first inclined surface 264 can move along the third inclined surface 281a in the first axial direction ①, and the third inclined surface 281a can move along the first inclined surface 264 in the z-axis direction. In this way, the center rod 280 can move in the z-axis direction via the movement of the first inclined surface 264 of the first link structure 260. (Refer to the above.) Figure 10 and Figure 11 The second linkage structure 270 can move in the second axial direction ② via the second guide pin 249 and the fourth guide pin 259. Through the movement of the second linkage structure 270, the second inclined surface 274 can press against the fourth inclined surface 282a in the z-axis direction. Then, the relatively elongated second elastic member 289 can be gradually compressed while performing the unfolding operation. The second inclined surface 274 can move along the fourth inclined surface 282a in the second axial direction ②, and the fourth inclined surface 282a can move along the second inclined surface 274 in the z-axis direction. In this way, the center rod 280 can move in the z-axis direction via the movement of the second inclined surface 274 of the second linkage structure 270. In this embodiment, the center rod 280 can move in the z-axis direction during the unfolding operation, thus allowing the rear surface of the folded area 143 of the display 140 to be supported by a flat surface in the unfolded state.

[0191] In various embodiments, during the folding operation, the inclined surfaces 264 of the link structure 260 and 274 of the link structure 270 may tilt further upward in the z-axis direction as they move in the direction of movement of the link structures 260 and 270. For example, the first inclined surface 264 of the first link structure 260 may tilt further upward in the z-axis direction as it moves upward in the second axial direction ②, and the second inclined surface 274 of the second link structure 270 may tilt further upward as it moves upward in the first axial direction ①.

[0192] In various embodiments, the first inclined surface 264 and the third inclined surface 281a may be inclined in such a way that they are at least partially in surface contact with each other. In various embodiments, the inclination angle of the first inclined surface 264 may be determined taking into account the axial displacement of the first link structure 260 and the z-axis displacement of the central rod 280. For example, the inclination angle of the first inclined surface 264 and the third inclined surface 281a may be... This causes the center rod 280 to be moved a specific height “h” in the z-axis direction when the first link structure 260 is moved a first distance d1.

[0193] In various embodiments, the second inclined surface 274 and the fourth inclined surface 282a may be inclined in such a way that they are at least partially in surface contact with each other. In various embodiments, the inclination angle of the second inclined surface 274 may be determined taking into account the axial displacement of the second link structure 270 and the z-axis displacement of the central rod 280. For example, the inclination angle of the second inclined surface 274 and the fourth inclined surface 282a may be... This causes the center rod 280 to be moved a specific height “h” in the z-axis direction when the second link structure 270 is moved a second distance d2.

[0194] As mentioned above, the first distance d1 and the second distance d2 can be different, therefore, the tilt angle of the first inclined surface 264 and the tilt angle of the second inclined surface 274 can be different.

[0195] Figure 14 This is a view showing the linkage structure of the hinge structure in the unfolded state according to an embodiment of the present disclosure. Figure 15 This is a view showing the linkage structure of the hinge structure in a fully folded state according to an embodiment of the present disclosure.

[0196] In an embodiment, the central rod 280 can be configured to be in an unfolded state and a folded state (e.g., Figure 15 Maintaining a horizontal state even in its fully folded state. For example, referring to the cross-sectional view, the center rod 280 can be configured such that it is aligned with the display (e.g., Figure 1 The normal vector of the surface facing the rear surface of the display 140 is substantially oriented in the z-axis direction. In an embodiment, the central rod 280 can move while maintaining a horizontal state during folding and unfolding operations.

[0197] In an embodiment, the center rod 280 may include a first region 280-1 with a first inclined protrusion 281 and a second region 280-2 with a second inclined protrusion 282. The first region 280-1 and the second region 280-2 may be configured to have the same height in any state, such that the center rod 280 is kept horizontal. For example, in Figure 14 The unfolded state Figure 15 In the fully folded state and in any folded state between the unfolded state and the fully folded state, the first region 280-1 and the second region 280-2 of the center rod 280 can have the same height in the z-axis direction.

[0198] Reference Figure 14In the unfolded state, the first region 280-1 and the second region 280-2 of the center rod 280 can have a first height h1 from the baseline. Referring to the cross-sectional area, the first inclined protrusion 281 and the second inclined protrusion 282 of the center rod 280 can have the same height in the z-axis direction in the unfolded state.

[0199] Reference Figure 15 In the fully folded state, the first region 280-1 and the second region 280-2 of the center rod 280 can have a second height h2 from the baseline. Referring to the cross-sectional area, the first inclined protrusion 281 and the second inclined protrusion 282 of the center rod 280 can have the same height in the z-axis direction in the fully folded state.

[0200] In any state between the unfolded state and the fully folded state, the first region 280-1 and the second region 280-2 of the center rod 280 can have a height less than the first height h1 and greater than the second height h2. For example, the first inclined protrusion 281 and the second inclined protrusion 282 of the center rod 280 can have the same height in the z-axis direction in any folded state.

[0201] In various embodiments, the difference between the first height h1 and the second height h2 can be equal to... Figure 12 and Figure 13 The specific heights shown are basically the same.

[0202] In various embodiments, the first inclined surface 264 of the first link structure 260 and the second inclined surface 274 of the second link structure 270 may have different inclinations. However, the first inclined surface 264 and the second inclined surface 274 may be configured such that the first region 280-1 and the second region 280-2 of the central rod 280 have the same z-axis height in any state between a fully folded state and an unfolded state. To achieve this, the third inclined surface 281a, the fourth inclined surface 282a, the first inclined surface 264, and the second inclined surface 274 may be substantially flat surfaces.

[0203] Figure 16 This is a view showing that, according to an embodiment of the present disclosure, the central rod remains horizontal when the hinge structure is tilted. Figure 16 Only the first link structure is shown, but the following can be applied to the second link structure in the same way.

[0204] Reference Figure 16The hinge structure 200 may be tilted. This tilt may include a state in which the first link structure 260 rotates about an axis parallel to the z-axis. Tilt may refer to a difference in the distance the first portion 260a and the second portion 260b of the first link structure 260 moves due to the difference in the rotation angles between the first arm axis 240S and the second arm axis 250S. For example, when a user folds or unfolds the first housing 110 and the second housing 120 with uneven force, the rotation angles of the first arm axis 240S and the second arm axis 250S may become different. The difference in rotation angles may cause a difference in the rotation angle between the first guide pin 248 and the third guide pin 258, and may cause a difference in the axial displacement between the first portion 260a and the second portion 260b of the first link structure 260. For example, referring to the figures, as the first portion 260a of the first link structure 260 moves further in the first axial direction ① relative to the second portion 260b, the first link structure 260 may rotate counterclockwise about an axis parallel to the z-axis to tilt.

[0205] In this embodiment, the central rod 280 can remain horizontal even when the hinge structure 200 is tilted. The central rod 280 can be supported in the z-axis direction by the first inclined surface 264 of the first link structure 260. Therefore, regardless of tilt, the first inclined surface 264 can have a uniform height in the z-axis direction. The central rod 280 of the hinge structure 200 can be configured to remain horizontal even when the first link structure 260 is tilted.

[0206] For example, the hinge structure according to the comparative example includes a gear structure that interlocks the first rotating structure and the second rotating structure with each other. The gear structure may include a first gear corresponding to the rotation of the first rotating structure, a second gear corresponding to the rotation of the second rotating structure, and an idler gear connecting the first gear and the second gear. According to the gear structure, backlash may occur between the meshing gears. Due to the backlash, the first rotating structure and the second rotating structure may not interlock with each other (e.g., tilt).

[0207] The hinge structure 200 according to the embodiments disclosed in this disclosure allows the first rotating structure 210 and the second rotating structure 220 to be interlocked with each other via the helical guide grooves 261, 262, 271 and 272 of the link structures 260 and 270 and the guide pins 248, 249, 258 and 259 of the arm shafts 240S and 250S. Therefore, by utilizing a hinge structure including a gear structure, tooth backlash can be reduced or eliminated. Furthermore, because the link structures 260 and 270 require relatively less space compared to the gear structure of the comparative example, the hinge structure 200 and / or the electronic device 100 can be thinner.

[0208] For example, the hinge structure according to the comparative example includes a central rod driven by a first rotating structure and a second rotating structure. In this case, when the first rotating structure and the second rotating structure are not interlocked with each other (e.g., tilted), the central rod may not maintain a horizontal state.

[0209] The hinge structure 200 according to the embodiments disclosed in this disclosure is configured such that the center rod 280 is interlocked by the link structures 260 and 270 that move in the axial direction during folding and unfolding operations, so that the center rod 280 can remain in a horizontal state even when the first rotating structure 210 and the second rotating structure 220 are not interlocked with each other (e.g., tilted).

[0210] Figure 17a This is a view illustrating an example of a cam structure according to an embodiment of the present disclosure. Figure 17b This is a view showing the engagement state of a cam structure according to an embodiment of the present disclosure.

[0211] Before the description, the cam 1700a according to the embodiment can be applied to the above. Figures 4 to 7 At least one cam structure described in the document.

[0212] Reference Figure 17a The cam 1700a (or cam structure) according to an embodiment may include a cam support B0, a plurality of hills M1, M2, and M3, and a plurality of valleys V1 and V2. The accompanying drawings show three hills M1, M2, and M3 and two valleys V1 and V2 (the valleys covered by the first hill M1 are not shown), but this disclosure is not limited thereto. For example, the cam 1700a may have a structure including two or more cams and valleys. All of the plurality of hills M1, M2, and M3 may have the same structure. Alternatively, at least one of the plurality of hills M1, M2, and M3 may differ from the others. For example, as shown, the structure of the second portion PT2 corresponding to the center of at least one hill may have a specific tilt angle (greater than 0 degrees, for example, a tilt angle of about 5 degrees), and the central portion of the remaining at least one hill may have a flat structure.

[0213] According to an embodiment, at least one of a plurality of mountain sections M1, M2, and M3 (e.g., a first mountain section M1), as shown, may include a first portion PT1 having a first inclination angle as1, a second portion PT2 having a second inclination angle as2, and a third portion PT3 having a third inclination angle as3. One side of the first portion PT1 (e.g., the -x-axis end) may be connected to one side of the first valley section V1 (e.g., the x-axis end), and the opposite side of the first portion PT1 (e.g., the x-axis end) may be connected to one side of the second portion PT2 (e.g., the -x-axis end). For example, the first portion PT1 may have a ridge having a first inclination angle as1 relative to the x-axis. The first inclination angle as1 may include an acute angle less than 90 degrees relative to the y-axis in the direction from the -x-axis to the x-axis.

[0214] One side of the second portion PT2 (e.g., the -x-axis end) can be connected to the opposite side of the first portion PT1 (e.g., the x-axis end), and the opposite side of the second portion PT2 (e.g., the x-axis end) can be connected to one side of the third portion PT3 (e.g., the -x-axis end). The second portion PT2 may protrude further along the y-axis compared to the first portion PT1 and the third portion PT3. The boundary region between the first portion PT1 and the second portion PT2 may be rounded with a first curvature CV1. The second portion PT2 may have a second tilt angle as2 relative to the x-axis. The second tilt angle as2 may include an acute angle less than 90 degrees relative to the y-axis in the direction from the -x-axis to the x-axis, and the absolute angle of the second tilt angle as2 may be less than the absolute angle of the first tilt angle as1.

[0215] One side of the third portion PT3 (e.g., the -x-axis end) can be connected to the opposite side of the second portion PT2 (e.g., the x-axis end), and the opposite side of the third portion PT3 (e.g., the x-axis end) can be connected to one side of the second valley V2 (e.g., the -x-axis end). The third portion PT3 can be formed with a specific inclination angle from the second portion PT2 on the x-axis. The boundary region between the second portion PT2 and the third portion PT3 can be rounded with a second curvature CV2. The second curvature CV2 can have a value smaller than the first curvature CV1 (e.g., the first curvature is gentler than the second curvature CV2). The third portion PT3 can have a third tilt angle as3 relative to the x-axis. The third tilt angle as3 can include an acute angle less than 90 degrees from the x-axis to the -x-axis relative to the y-axis, and the absolute angle of the third tilt angle as3 can be greater than the absolute angle of the second tilt angle as2. According to various embodiments, the absolute value of the third tilt angle as3 can be the same as or greater than the absolute angle of the first tilt angle as1.

[0216] Reference Figure 17b , Figure 17aThe cam shape shown can be applied to the above. Figures 2a to 2c , Figures 3 to 7 , Figure 8 (a), (b) and (c) Figure 9 (a), (b) and (c) and Figures 10 to 16 At least one cam or at least one cam structure described herein. For example, in the figures shown, the protrusion of cam 1700a may be configured to protrude from the y-axis towards the -y-axis, and the protrusion of cam structure 1700b may be configured to protrude from the -y-axis towards the y-axis. Alternatively, the recessed portion of cam 1700a and the recessed portion of cam structure 1700b may be configured to face each other. At least a portion of the second portion 1700a_P2 of cam 1700a and at least a portion of the second portion 1700b_P2 of cam structure 1700b may be present in an electronic device (e.g., Figures 2a to 2c The electronic devices 100 contact each other when they are in the free-stop section (a section in which the electronic devices are held within a specific angular range due to the friction between the cam 1700a and the cam structure 1700b). According to an embodiment, when the electronic devices are in Figure 15 or Figure 16 When in the free-stop state described in the text, the display ( Figure 1 or Figures 2a to 2c The display 160 can be applied to restore the display to its unfolded state. Figure 14 The repulsive force (in the state of ).

[0217] According to an embodiment, cam 1700a can be pushed in the x-axis direction by the restoring force of the display (e.g., the repulsive force of the display is applied in the counterclockwise direction), and cam structure 1700b can be pushed in the -x-axis direction by the restoring force of the display (e.g., the repulsive force of the display is applied in the clockwise direction). During this process, because the second portion 1700a_P2 of cam 1700a and the second portion 1700b_P2 of cam structure 1700b contact each other with the aforementioned second tilt angle as2, cam 1700a and cam structure 1700b can counteract at least a portion of the repulsive force (or restoring force) in the unfolding direction of the display, thereby suppressing the pushing in a free-stop state that could occur regardless of the user's intention (e.g., the first housing (e.g., Figure 1 or Figures 2a to 2c The first housing 110) and the second housing (e.g., Figure 1 or Figures 2a to 2c The angle between the second housing 120 and the second housing 120 changes. According to various embodiments, as described above... Figure 15 or Figure 16Similarly, the electronic device can be held at a specific angle (or in a free-stop state). In this case, as shown in the figure, the electronic device can be configured to engage with cam 1700a and cam structure 1700b, and the repulsive or restoring force of the display can counteract the force applied as shown in the figure. Figure 14 The force is in the same unfolded state as in the middle. Figure 17b An example is shown where the apex of the mountain portion of both cam 1700a and cam structure 1700b has a second tilt angle as2, but this disclosure is not limited thereto. For example, a second portion PT2 having the second tilt angle as2 may be formed in at least one of cam 1700a or cam structure 1700b.

[0218] At the same time, referring to the rotation in the unfolding direction, Figure 17b The description refers to the direction in which cam 1700a rotates from the -x axis (or left side) towards the x axis (or right side), but this disclosure is not limited thereto. For example, according to the design aspects of electronic devices, the direction in which cam 1700a rotates from the x axis towards the -x axis may be the direction in which the display is operated from a folded state to an unfolded state.

[0219] An electronic device according to an embodiment disclosed herein may include: a first housing 110 and a second housing 120; a hinge structure 200 connected to the first housing 110 and the second housing 120 such that the first housing 110 rotates about a first rotation axis R1 parallel to its axial direction, and the second housing 120 rotates about a second rotation axis R2 parallel to its axial direction; and a display 140 configured to cover the first housing 110, the second housing 120, and the hinge structure 200, wherein the display 140 includes a folding region 143 that is flat in an unfolded state and curved in a folded state, and the hinge structure 200 may include: a first arm shaft 240S extending in a direction parallel to the axial direction, connected to a fixing structure 230 for rotatability, and connected to a first rotating structure 2 The rotation of 10 corresponds to the rotation of the second rotating structure 220; the second arm shaft 250S extends in a direction parallel to the axial direction, is connected to the fixed structure 230 to be rotatable, and rotates in accordance with the rotation of the second rotating structure 220; the first link structure 260 is connected to the first arm shaft 240S and the second arm shaft 250S, wherein the first link structure 260 is configured to move linearly in the axial direction according to the rotation of the first arm shaft 240S and the second arm shaft 250S; and the center rod 280, when viewed from the top, at least partially overlaps with the folding area 143 of the display 140, wherein the center rod 280 is connected to the first link structure 260, and the center rod 280 is configured to move in a direction perpendicular to the axial direction in accordance with the linear movement of the first link structure 260.

[0220] In various embodiments, the folded region 143 extends in the axial direction.

[0221] In various embodiments, the first arm shaft 240S may include a first guide pin 248 protruding from its outer surface, the second arm shaft 250S may include a third guide pin 258 protruding from its outer surface, and the first link structure 260 may include: a first portion 260a coupled to the first arm shaft 240S, wherein the first guide pin 248 is at least partially accommodated in the first portion 260a; a second portion 260b coupled to the second arm shaft 250S, wherein the third guide pin 258 is at least partially accommodated in the second portion 260b; and a first central portion 260c connecting the first portion 260a and the second portion 260b.

[0222] In various embodiments, the first guide groove 261 may extend a first length in the extension direction of the first arm shaft 240S and extend at a first angle in the circumferential direction of the first arm shaft 240S, and the second guide groove 262 may extend a second length in the extension direction of the second arm shaft 250S and extend at a second angle in the circumferential direction of the second arm shaft 250S. The first length and the second length may be substantially the same, and the first angle and the second angle may have substantially the same size and opposite directions.

[0223] In various embodiments, when the direction perpendicular to the axial direction is defined as a first direction (e.g., the z-axis direction) when the center rod 280 faces the folding region 143 from the unfolded state, the center rod 280 can be configured such that, during an unfolding operation that moves the hinge structure 200 from the folded state to the unfolded state, the center rod 280 moves in the first direction, and the center rod 280 can be configured such that, during a folding operation that moves the hinge structure 200 from the unfolded state to the folded state, the center rod 280 moves in a second direction (e.g., the -z-axis direction) opposite to the first direction.

[0224] In various embodiments, the first link structure 260 may include a first portion 260a connected to a first arm shaft 240S, a second portion 260b connected to a second arm shaft 250S, and a first central portion 260c connecting the first portion 260a and the second portion 260b. A first opening 263 may be formed in the first central portion 260c of the first link structure 260. The sidewall of the first opening 263 may include a first inclined surface 264 having a specific tilt angle relative to the axial direction. The center rod 280 may include a first inclined protrusion 281, a portion of which is located inside the first opening 263. The first inclined protrusion 281 may include a third inclined surface 281a that at least partially contacts the first inclined surface 264, and the first inclined surface 264 may press against the third inclined surface 281a such that as the first link structure 260 moves linearly in the axial direction, the center rod 280 moves toward a first direction or a second direction.

[0225] In various embodiments, the hinge structure 200 may further include: a fixing structure 230 supporting the first arm shaft 240S and the second arm shaft 250S; and a second fixing member 238 supporting the first arm shaft 240S and the second arm shaft 250S and disposed at a position spaced apart from the fixing structure 230 in the axial direction. The center rod 280 may include: a first protrusion 283, at least a portion of which extends into the interior of a first hole 2361 formed in the fixing member 236; and a first elastic member 288 disposed in the first protrusion 283 and providing elasticity to the center rod 280. The first elastic member 288 may be configured to be compressed during an unfolding operation and extended during a folding operation.

[0226] In various embodiments, the hinge structure 200 may include: a second link structure 270 disposed at a position spaced apart from the first link structure 260 in the axial direction and linearly movable in the axial direction; the second link structure 270 may include: a third portion 270a connected to the first arm shaft 240S, wherein a second guide pin 249 of the first arm shaft 240S is at least partially accommodated in the third portion 270a; and a fourth portion 270b connected to the second arm shaft 250S, wherein a fourth guide pin 259 of the second arm shaft 250S is at least partially accommodated in the third portion 270a. The fourth portion 270b is contained therein; and the second central portion 270c connects the third portion 270a and the fourth portion 270b. The second opening 273 may be formed in the second central portion 270c. The sidewall of the second opening 273 may include a second inclined surface 274 having a specific angle of inclination relative to the axial direction. At least a portion of the central rod 280 may include a second inclined protrusion 282 located inside the second opening 273, and the second inclined protrusion 282 may include a fourth inclined surface 282a that at least partially contacts the second inclined surface 274.

[0227] In various embodiments, the second link structure 270 may move in the same or opposite direction as the first link structure 260, and the first link structure 260 may be configured to press the center link 280 in the same direction as the direction in which the center link 280 is pressed.

[0228] In various embodiments, the hinge structure 200 may further include: a fixing structure 230 supporting a first arm shaft 240S and a second arm shaft 250S; and a second fixing member 238 supporting the first arm shaft 240S and the second arm shaft 250S and disposed at a position spaced apart from the fixing structure 230 in the axial direction. The hinge structure 200 may further include: a first arm portion 240 connected to the first arm shaft 240S to rotate together with the first arm shaft 240S; and a second arm portion 250 connected to the second arm shaft 250S to rotate together with the second arm shaft 250S. The linkage structure may be configured such that a first portion 260a is located between the first arm portion 240 and the fixing structure 230, and a second portion 260b is located between the second arm portion 250 and the fixing structure 230.

[0229] In various embodiments, the first link structure 260 may be configured to at least partially contact either the first arm 240 or the second arm 250, or the fixing structure 230, in the deployed state.

[0230] In various embodiments, the hinge structure 200 may include first cam structures 244, 245, 291, and 293 connected to the first arm shaft 240S; third elastic members 295a and fourth elastic members 295b compressed or extended by the first cam structures 244, 245, 291, and 293; second cam structures 254, 255, 292, and 294 connected to the second arm shaft 250S; and fifth elastic members 295c and sixth elastic members 295d compressed or extended by the second cam structures 254, 255, 292, and 294. The first cam structures 244, 245, 291, and 293 may include: a first arm cam 244 and a second arm cam 245, which are formed in the first arm portion 240 and connected to the first arm shaft 250S. The arm portion 240 rotates together; and a first linear cam 291 and a third linear cam 293 are coupled to the first arm shaft 240S for linear movement and engage with the first arm cam 244 and the second arm cam 245, and the second cam structures 254, 255, 292 and 294 may include: a third arm cam 254 and a fourth arm cam 255 formed in the second arm portion 250 and rotating together with the second arm portion 250; and a second linear cam 292 and a fourth linear cam 294 are coupled to the second arm shaft 250S for linear movement and engage with the third arm cam 254 and the fourth arm cam 255.

[0231] A hinge structure according to an embodiment disclosed in this disclosure may include: a fixed structure 230; a first rotating structure 210 coupled to a first guide rail 232 of the fixed structure 230 for rotation about a first rotation axis R1; a first arm shaft 240S extending in a direction parallel to the first rotation axis R1 and connected to the fixed structure 230 for rotatability, wherein the first arm shaft 240S includes a first guide pin 248 protruding from its outer surface; a first arm portion 240 coupled to the first arm shaft 240S for rotation about the first arm shaft 240S and connected to the first rotating structure 210 for sliding; a second rotating structure 220 coupled to a second guide rail 234 of the fixed structure 230 for rotation about a second rotation axis R2; and a second arm shaft 250S extending in a direction parallel to the second rotation axis R2 and connected to the fixed structure 230 for rotatability. Structure 230 is rotatable, wherein the second arm shaft 250S includes a third guide pin 258 protruding from its outer surface; a second arm portion 250, which is coupled to the second arm shaft 250S for rotation about the second arm shaft 250S and connected to the second rotating structure 220 for sliding; and a first linkage structure 260, which includes: a first portion 260a, in which a first guide groove 261 is formed, through which the first arm shaft 240S passes and the first guide pin 248 is at least partially received in the first guide groove 261; a second portion 260b, in which a second guide groove 262 is formed, through which the second arm shaft 250S passes and the third guide pin 258 is at least partially received in the second guide groove 262; and a first central portion 260c, which connects the first portion 260a and the second portion 260b.

[0232] In various embodiments, the first link structure 260 may be configured such that when the first arm shaft 240S and / or the second arm shaft 250S rotate, the link structure 260 moves linearly in the extension direction of the first arm shaft 240S and the second arm shaft 250S.

[0233] In various embodiments, the first linkage structure 260 may be configured such that when the first arm shaft 240S and / or the second arm shaft 250S rotate in opposite directions, the linkage structure 260 interlocks the first arm shaft 240S and the second arm shaft 250S with each other.

[0234] In various embodiments, the first guide groove 261 and the second guide groove 262 may have a spiral shape.

[0235] In various embodiments, the first guide pin 248 and the third guide pin 258 may be configured such that when the first arm shaft 240S rotates in a first rotational direction and the second arm shaft 250S rotates in a second rotational direction opposite to the first rotational direction, the first guide pin 248 and the third guide pin 258 press the connecting rod structure in the same direction.

[0236] In various embodiments, the first guide groove 261 may extend a first length in the extension direction of the first arm shaft 240S and may extend at a first angle in the circumferential direction of the first arm shaft 240S, and the second guide groove 262 may extend a second length in the extension direction of the second arm shaft 250S and may extend at a second angle in the circumferential direction of the second arm shaft 250S. The first length and the second length may be substantially the same, and the first angle and the second angle may have substantially the same size and opposite directions.

[0237] In various embodiments, the hinge structure may further include a central rod 280 that at least partially overlaps with the central portion of the first link structure 260, and the central rod 280 may be configured to move in coordination with the rotation of the first link structure 260 and the first arm axis 240S and the second arm axis 250S.

[0238] In various embodiments, a first opening 263 may be formed in a first central portion 260c of a first link structure 260. A portion of the side surface of the first opening 263 may include a first inclined surface 264. The central rod 280 may include a first inclined protrusion 281 that is at least partially housed inside the first opening 263. The first inclined protrusion 281 may include a third inclined surface 281a that at least partially contacts the first inclined surface 264.

[0239] In various embodiments, the hinge structure may be configured such that during folding and unfolding operations, the first link structure 260 moves linearly along the first arm axis 240S and the second arm axis 250S, and the center link 280 moves in a direction perpendicular to the direction of linear movement in accordance with this linear movement.

[0240] In various embodiments, the central rod 280 moves in coordination with the movement of the connecting rod structures 260 and 270, such that the central rod 280 remains horizontal when the first housing 110 and the second housing 120 of the electronic device realizing the hinge structure are tilted.

[0241] In various embodiments, the hinge structure may further include a first torque structure 201 that provides a first torque to the first arm shaft 240S; and a second torque structure 202 that provides a second torque to the second arm shaft 250S, wherein the first torque structure 201 and the second torque structure 202 further provide a frictional force corresponding to the recovery torque to the display 140, the display 140 being expected to return to a flat state by the frictional force.

[0242] It should be understood that the various embodiments of this disclosure and the terminology used therein are not intended to limit the technical features set forth herein to the specific embodiments, but rather to include various changes, equivalents, or substitutions for the respective embodiments. As used herein, each of the phrases such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C” may include any one or all possible combinations of the items enumerated together with the corresponding phrase among the plurality of phrases. As used herein, terms such as “first” and “second” or “first” and “second” may be used to simply distinguish one component from another and do not limit the components in other respects (e.g., importance or order). It will be understood that, whether the terms “operably” or “communically” are used or not, if an element (e.g., a first element) is referred to as “coupled to another element (e.g., a second element),” “coupled to another element (e.g., a second element),” “connected to another element (e.g., a second element),” or “connected to another element (e.g., a second element)”, it means that the element can be directly (e.g., wiredly) coupled to the other element, wirelessly connected to the other element, or coupled to the other element via a third element.

[0243] Depending on the context, for example, the expression "adapted to or configured to" in hardware or software, when used in this disclosure, may be used interchangeably with the expressions "suitable for," "capable of," "adapted to," "made as," "capable of," or "designed to." The expression "a device configured as" can mean that the device is "capable" of operating with another device or other component. For example, "a processor set (or configured to) perform A, B, and C" can refer to a dedicated processor (e.g., an embedded processor) for performing the corresponding operations, or a general-purpose processor (e.g., a central processing unit (CPU) or application processor (AP)) that performs the corresponding operations by running one or more programs stored in a storage device (e.g., memory).

[0244] As used in connection with various embodiments of this disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "part," or "circuit"). A module may be a single integrated component adapted to perform one or more functions, or the smallest unit or part of such a single integrated component. A "module" may be implemented mechanically or electronically and may include an application-specific integrated circuit (ASIC) chip, a field-programmable gate array (FPGA), or a programmable logic device for performing some operation.

[0245] In various embodiments, at least a portion of an apparatus (e.g., its modules or functions) or a method (e.g., operation) may be implemented by instructions stored in a computer-readable storage medium (e.g., memory) as program modules. When executed by a processor (e.g., a processor), the instructions cause the processor to perform a function corresponding to the instructions. Computer-readable storage media may include hard disks, floppy disks, magnetic media (e.g., magnetic tape), optical media (e.g., read-only optical discs (CD-ROMs), digital versatile optical discs (DVDs), magneto-optical media (e.g., optical disks)), embedded memory, etc. The instructions may include code compiled by a compiler or code executable by an interpreter.

[0246] According to various embodiments, each of the above-described components (e.g., a module or program) may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Optionally or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each of the multiple components in the same or similar manner as the corresponding component of the multiple components performed one or more functions before integration. According to various embodiments, the operations performed by a module, program, or other component may be performed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be run in a different order or omitted, or one or more other operations may be added.

[0247] Although this disclosure has been shown and described with reference to various embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims and their equivalents.

Claims

1. An electronic device, the electronic device comprising: First shell; Second shell; A hinge structure is provided, which connects the first housing and the second housing. The first housing rotates about a first rotation axis, and the second housing rotates about a second rotation axis. The first rotation axis and the second rotation axis are parallel to the axial direction. as well as A display covering the first housing, the second housing, and the hinge structure, wherein the display includes a folding region that is flat in an unfolded state and curved in a folded state. The hinge structure includes: A first arm shaft extends in a direction parallel to the axial direction, the first arm shaft is connected to a fixed structure to be rotatable, and the first arm shaft rotates in response to the rotation of a first rotating structure; The second arm shaft extends in a direction parallel to the axial direction, and is connected to the fixed structure to be rotatable. The second arm shaft rotates in accordance with the rotation of the second rotating structure. A linkage structure, connected to a first arm shaft and a second arm shaft, the linkage structure being configured to move linearly in the axial direction according to rotation of the first arm shaft and the second arm shaft; and The center rod, when viewed from above, at least partially overlaps with the folded area of ​​the display, the center rod is connected to the linkage structure, and the center rod is movable in a direction perpendicular to the axial direction in accordance with the linear movement of the linkage structure.

2. The electronic device according to claim 1, wherein, The first arm shaft includes a first guide pin protruding from the outer surface of the first arm shaft. The second arm shaft includes a third guide pin protruding from its outer surface, and The connecting rod structure includes: The first part is connected to the first arm shaft, and the first guide pin is at least partially received in the first part; The second part, which is coupled to the second arm shaft, wherein the third guide pin is at least partially received within the second part; and The central portion connects the first portion and the second portion.

3. The electronic device according to claim 2, in, The first guide groove extends with a first length in the extending direction of the first arm shaft and extends with a first angle in the circumferential direction of the first arm shaft. The second guide groove extends with a second length in the extending direction of the second arm shaft and extends with a second angle in the circumferential direction of the second arm shaft. Wherein, the first length and the second length are substantially the same length, and The first angle and the second angle have substantially the same angular magnitude and face opposite directions.

4. The electronic device according to claim 1, wherein, When the direction perpendicular to the axial direction is defined as the first direction when the object faces the folded area from the center rod in the unfolded state, the direction is defined as the first direction. The central rod is capable of moving in the first direction during the unfolding operation that moves the hinge structure from the folded state to the unfolded state, and The central rod is capable of moving in a second direction opposite to the first direction during a folding operation that moves the hinge structure from the unfolded state to the folded state.

5. The electronic device according to claim 4, wherein, The linkage structure includes: The first part is connected to the first arm shaft. The second part, the second part is connected to the second arm shaft, and The central portion connects the first portion and the second portion. The opening is formed in the central portion of the connecting rod structure. The sidewall of the opening includes a first inclined surface having a specific inclination angle relative to the axial direction. The central rod includes an inclined protrusion, a portion of which is located inside the opening. The inclined protrusion includes a third inclined surface, which at least partially contacts the first inclined surface. Wherein, the first inclined surface presses against the third inclined surface, such that as the connecting rod structure moves linearly in the axial direction, the central rod moves toward the first direction or the second direction.

6. The electronic device according to claim 4, in, The hinge structure also includes: The fixing structure supports the first arm shaft and the second arm shaft; and A fixing member, which supports the first arm shaft and the second arm shaft, is disposed at a position spaced apart from the fixing structure in the axial direction. The central rod includes: A protrusion, at least a portion of which extends into the interior of a hole formed in the fixing member; and an elastic member disposed in the protrusion and configured to provide a spring force to the center rod, and The elastic member is further configured to be compressed during the unfolding operation and stretched during the folding operation.

7. The electronic device according to claim 5, in, The hinge structure further includes a second link structure, which is disposed at a position spaced apart from the first link structure in the axial direction, and is configured to move linearly in the axial direction. The second link structure includes: The third part is connected to the first arm shaft, and the second guide pin of the first arm shaft is at least partially accommodated in the third part; The fourth part, coupled to the second arm shaft, wherein the fourth guide pin of the second arm shaft is at least partially accommodated in the fourth part; and The second central section connects the third section and the fourth section. The second opening is formed in the second central portion. The sidewall of the second opening includes a second inclined surface, the second inclined surface having a specific inclination angle relative to the axial direction. Wherein, at least a portion of the central rod includes a second inclined protrusion, the second inclined protrusion being located inside the second opening, and The second inclined protrusion includes a fourth inclined surface, which at least partially contacts the second inclined surface.

8. The electronic device according to claim 7, wherein, The second link structure moves in the same or opposite direction as the moving direction of the first link structure, and The connecting rod structure is configured such that the central rod is pressed in the same direction as the direction in which the central rod is pressed by the first inclined surface.

9. The electronic device according to claim 1, wherein, The hinge structure also includes: The fixing structure supports the first arm shaft and the second arm shaft; and A fixing member, which supports the first arm shaft and the second arm shaft, is positioned at a distance from the fixing structure in the axial direction. The hinge structure further includes: A first arm, the first arm being connected to a first arm shaft to rotate together with the first arm shaft; and The second arm is connected to the second arm shaft to rotate together with the second arm shaft, and The first part of the linkage structure is located between the first arm and the fixed structure, and the second part of the linkage structure is located between the second arm and the fixed structure.

10. The electronic device according to claim 9, wherein, The linkage structure, in its deployed state, at least partially contacts any one of the first arm, the second arm, or the fixed structure.

11. The electronic device according to claim 9, wherein, The hinge structure also includes: A first cam structure is connected to the first arm shaft; A first elastic member, which is compressed or extended by the first cam structure; A second cam structure, the second cam structure being connected to the second arm shaft; and The second elastic member is compressed or extended by the second cam structure. The first cam structure includes: A first arm cam, the first arm cam being formed in the first arm portion and rotating together with the first arm portion; and A first linear cam, coupled to the first arm shaft for linear movement, engages with the first arm cam, and The second cam structure includes: A second arm cam, the second arm cam being formed in the second arm and rotating together with the second arm; and A second linear cam is connected to the second arm shaft to move linearly, and the second linear cam meshes with the second arm cam.

12. The electronic device according to claim 1, wherein, The hinge structure includes: The fixed structure; The first rotating structure is connected to the first guide rail of the fixed structure to rotate about the first rotation axis; A first arm, the first arm being connected to a first arm axis to rotate about the first arm axis, and the first arm being connected to the first rotating structure to be slidable; The second rotating structure is connected to the second guide rail of the fixed structure to rotate about the second rotation axis; The second arm is connected to the second arm axis for rotation about the second arm axis, and the second arm is connected to the second rotating structure for sliding. The first arm shaft extends in a direction parallel to the first axis of rotation, is connected to the fixed structure to be rotatable, and includes a first guide pin protruding from the outer surface of the first arm shaft. The second arm shaft extends in a direction parallel to the second rotation axis, is connected to the fixed structure for rotatability, and includes a third guide pin protruding from the outer surface of the second arm shaft; and The connecting rod structure includes: In the first part, a first guide groove is formed, the first arm shaft passes through the first guide groove, and the first guide pin is at least partially received in the first guide groove; In the second part, a second guide groove is formed therein, the second arm shaft passes through the second guide groove, and the third guide pin is at least partially received within the second guide groove; and The central portion connects the first portion and the second portion.

13. The electronic device according to claim 12, wherein, The linkage structure is configured such that when the first arm shaft and the second arm shaft rotate in opposite directions, the first arm shaft and the second arm shaft are interlocked with each other.

14. The electronic device according to claim 12, wherein, The first guide groove and the second guide groove have a spiral shape.

15. The electronic device according to claim 12, wherein, The first guide pin and the third guide pin are configured such that when the first arm shaft rotates in a first rotational direction and the second arm shaft rotates in a second rotational direction opposite to the first rotational direction, the first guide pin and the third guide pin press the connecting rod structure in the same direction.

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