Arm structure, hinge structure including arm structure, and electronic device including hinge structure

Abstract

An arm structure of an electronic device is provided. The arm structure includes an arm body, a first cam provided on one side of the arm body and including a first hole into which at least a portion of a rotation shaft providing a folding operation of the electronic device is inserted, peaks and valleys formed around the first hole, a second cam arranged side by side on the same axis as the one side of the arm body, spaced apart from the first cam, and including a second hole into which at least a portion of the rotation shaft is inserted, peaks and valleys formed around the second hole, and a connection portion provided on the other side of the arm body and fastened with a rotation portion providing rotation of the electronic device.

Description

[0001] Cross Reference to Related Applications

[0002] This application is a divisional application of the patent application with application number 202180038788.3, filed on May 18, 2021, and entitled "Arm Structure, Hinge Structure Including Arm Structure, and Electronic Device Including Hinge Structure." TECHNICAL FIELD

[0003] The present disclosure relates to an electronic device including an arm structure and a hinge structure. More particularly, the present disclosure relates to an arm structure and a hinge structure capable of providing a specified size of a braking load to stabilize a folding operation or a folded state of a foldable electronic device. BACKGROUND

[0004] A portable electronic device such as a smart phone can provide various functions such as a call, a video playback, and an Internet search based on various types of applications. A user can desire to use the above-described various functions through a wider screen. However, the larger the screen, the lower the portability. Accordingly, a foldable portable electronic device having enhanced portability by utilizing a foldable structure has been developed.

[0005] In a foldable electronic device, a hinge structure can be disposed to be connected with an adjacent housing and rotate to support the housing when the housing is rotated at a predetermined angle.

[0006] A foldable electronic device can include a display that is folded at least in part. The display is formed to have a predetermined thickness or less so that the display is foldable, and thus, the strength of the display can be weakened and a puncture can occur due to external pressure or impact. To address this issue, a display having increased rigidity or a reaction force (e.g., a display thickness increase) can be applied. When the display thickness increases, a repulsive force (e.g., a restoring force generated to return to an unfolded state) in a folded state increases, which can cause a defect in a folding operation of the display (e.g., the display can not be completely folded).

[0007] The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the present disclosure. SUMMARY

[0008] TECHNICAL PROBLEM

[0009] Aspects of the present disclosure will address at least the above-mentioned problems and / or disadvantages and provide at least the advantages described below. Accordingly, an aspect of the present disclosure is to provide an arm structure and a hinge structure capable of providing a specified size of a braking load (or a hinge force, or a force for maintaining a specific state of an electronic device) so that a folding operation or a folding state of a foldable electronic device is maintained stable, and an electronic device including the same.

[0010] Another aspect of the present disclosure is to provide an arm structure and a hinge structure capable of providing a specified size of a braking load without increasing a size (e.g., thickness) of an electronic device or while suppressing an increase in the size (e.g., thickness), and an electronic device including the same.

[0011] Additional aspects will be set forth in part in the description which follows, and in part will be apparent from the description, or can be learned by practice of the presented embodiments.

[0012] Solution to the problem

[0013] According to an aspect of the disclosure, an electronic device (or a portable electronic device, a portable communication device, a foldable electronic device, a foldable electronic device having a communication function, etc.) is provided. The electronic device includes a housing including a first housing and a second housing, a hinge structure accommodated in a hinge housing and connected to the first housing and the second housing, and a flexible display disposed on the first housing, the hinge structure, and the second housing. The hinge structure includes a first rotation shaft that rotates about a first axis, a second rotation shaft that rotates about a second axis, a first arm portion including a first cam structure and a second cam structure connected to the first rotation shaft, a second arm portion including a third cam structure and a fourth cam structure connected to the second rotation shaft, a first rotation portion connected to the first arm portion and rotating about a third axis, a second rotation portion connected to the second arm portion and rotating about a fourth axis, a first cam member including a first cam engaged with the first cam structure and a second cam engaged with the third cam structure, a second cam member including a third cam engaged with the second cam structure and a fourth cam engaged with the fourth cam structure, a first elastic body connected to the first rotation shaft to provide an elastic force to the first cam, a second elastic body connected to the second rotation shaft to provide an elastic force to the second cam, a third elastic body connected to the first rotation shaft to provide an elastic force to the third cam, and a fourth elastic body connected to the second rotation shaft to provide an elastic force to the fourth cam.

[0014] According to another aspect of the disclosure, a hinge structure for a foldable electronic device is provided. The hinge structure includes a first rotation part connected to a first housing of the foldable electronic device and rotating within a predetermined angle range, a second rotation part connected to a second housing of the foldable electronic device and rotating along with the rotation of the first rotation part, a first arm part connected to the first rotation part and including a first cam structure and a second cam structure spaced apart from each other by a predetermined interval, a second arm part connected to the second rotation part and including a third cam structure and a fourth cam structure spaced apart from each other by a predetermined interval, a first rotation shaft rotating about a first axis and at least a portion of which is inserted into the first cam structure and the second cam structure, a second rotation shaft rotating about a second axis and at least a portion of which is inserted into the third cam structure and the fourth cam structure, a first cam member placed on the first rotation shaft and including a first cam engaged with the first cam structure and a second cam engaged with the third cam structure, a second cam member placed on the second rotation shaft and including a third cam engaged with the second cam structure and a fourth cam engaged with the fourth cam structure, a first elastic body connected to the first rotation shaft to provide an elastic force to the first cam, a second elastic body connected to the second rotation shaft to provide an elastic force to the second cam, a third elastic body connected to the first rotation shaft to provide an elastic force to the third cam, and a fourth elastic body connected to the second rotation shaft to provide an elastic force to the fourth cam, wherein the first rotation part can rotate about a third axis and the second rotation part can rotate about a fourth axis.

[0015] According to another aspect of the disclosure, an arm structure for a foldable electronic device is provided. The arm structure includes an arm body, a first cam disposed on one side of the arm body and including a first hole into which at least a portion of a rotation shaft for a folding operation of the foldable electronic device is inserted, peaks and valleys formed around the first hole, a second cam disposed on the same axis as the one side of the arm body side by side with the first cam, spaced apart from the first cam, and including a second hole into which at least a portion of the rotation shaft is inserted, peaks and valleys formed around the second hole, and a connection part disposed on the other side of the arm body and fastened with a rotation part for rotating the foldable electronic device.

[0016] Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, when taken in con junction with the annexed drawings, discloses various embodiments of the present disclosure.

[0017] Advantageous Effects

[0018] With the arm structure, the hinge structure, and the electronic device including the hinge structure according to various embodiments of the present disclosure, it is possible to support a foldable electronic device so that it more rigidly maintains a folded state or performs a folding operation by providing a specified size of a detent load without increasing the size (e.g., thickness) of the electronic device or while suppressing the increase in the size (e.g., thickness).

[0019] Further, with the arm structure, the hinge structure, and the electronic device including the hinge structure according to various embodiments of the present disclosure, it is possible to stably support the folded state of the electronic device even if the rigidity, the reaction force, or the thickness of the display increases by using the increased detent load against the repulsive force of the display in the folded state. Therefore, with the hinge structure and the electronic device according to various embodiments of the present disclosure, it is possible to provide an opportunity to apply a display having strong resistance to a dent or a wrinkle caused by external pressure or impact to an electronic device.

[0020] Further, with the arm structure, the hinge structure, and the electronic device including the hinge structure according to various embodiments of the present disclosure, it is possible to provide an opportunity to apply a flexible display of various materials or various shapes to a foldable electronic device in the case where the detent load is increased. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other aspects, features, and advantages of certain embodiments of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1a FIG. 1 is a diagram illustrating an example of a front surface of an electronic device according to an embodiment of the present disclosure;

[0023] Figure 1b FIG. 2 is a diagram illustrating an example of a rear surface of an electronic device according to an embodiment of the present disclosure;

[0024] Figure 1c FIG. 3 is a diagram illustrating an example of a folded state of an electronic device according to an embodiment of the present disclosure;

[0025] Figure 2 FIG. 4 is a diagram illustrating an example of a front surface and a rear surface of a hinge structure related to a plurality of detent structures of an electronic device according to an embodiment of the present disclosure;

[0026] Figure 3is a view showing a surface in a first direction in an exploded perspective view of a hinge structure according to an embodiment of the disclosure;

[0027] Figure 4 is a view showing a surface in a second direction in an exploded perspective view of a hinge structure according to an embodiment of the disclosure;

[0028] Figure 5 is a view showing an example of a rotating part according to an embodiment of the disclosure;

[0029] Figure 6 is a view showing an example of a fixed bracket according to an embodiment of the disclosure;

[0030] Figure 7 is a view showing an example of an arm part according to an embodiment of the disclosure;

[0031] Figure 8 is a view showing an example of a second rotating shaft according to an embodiment of the disclosure;

[0032] Figure 9 is a view showing an example of a configuration of a stopper according to an embodiment of the disclosure;

[0033] Figure 10 is a view showing an example of a center bracket according to an embodiment of the disclosure;

[0034] Figure 11 is a view showing an example of a shaft bracket according to an embodiment of the disclosure;

[0035] Figure 12 is a view showing an example of a cam member according to an embodiment of the disclosure;

[0036] Figure 13 is a view showing an example of a support ring according to an embodiment of the disclosure;

[0037] Figure 14 is a view showing a first state of some components of an electronic device according to an embodiment of the disclosure;

[0038] Figure 15 is a view showing a first angle state of a partial structure of an electronic device according to an embodiment of the disclosure;

[0039] Figure 16 is a view showing a second angle state of a first hinge structure according to an embodiment of the disclosure;

[0040] Figure 17 is a view showing a second state of some components of an electronic device according to an embodiment of the disclosure;

[0041] Figure 18FIG. 7 is a diagram illustrating an example of another type of third hinge structure according to an embodiment of the present disclosure;

[0042] Figure 19 FIG. 8 is a perspective view in a first direction illustrating an example of a coupling state of a third cam member, a fifth cam structure, and a sixth cam structure according to an embodiment of the present disclosure;

[0043] Figure 20 FIG. 9 is a perspective view in a second direction illustrating an example of a coupling state of a third cam member, a fifth cam structure, and a sixth cam structure according to an embodiment of the present disclosure;

[0044] Figure 21 FIG. 10 is a diagram illustrating a coupling state of a fifth cam structure and a first rotation shaft and a sixth cam structure and a second rotation shaft according to an embodiment of the present disclosure;

[0045] Figure 22 FIG. 11 is a diagram illustrating an example of a fourth hinge structure according to an embodiment of the present disclosure;

[0046] Figure 23 FIG. 12 is a diagram illustrating a fourth cam member and a fifth cam member according to an embodiment of the present disclosure in more detail; Figure 22

[0047] Figure 24 FIG. 14 is a diagram illustrating a time point of cam motions of a fourth cam member and a fifth cam member according to an embodiment of the present disclosure;

[0048] Figure 25 FIG. 15 is a diagram illustrating an example of a fifth hinge structure according to an embodiment of the present disclosure;

[0049] Figure 26 FIG. 16 is a diagram illustrating an example of a sixth hinge structure according to an embodiment of the present disclosure;

[0050] Figure 27a FIG. 17 is a diagram illustrating another example of a cam shape according to an embodiment of the present disclosure; and

[0051] Figure 27b FIG. 18 is a diagram illustrating an example of a contact state of some peaks of a cam and a cam structure according to an embodiment of the present disclosure.

[0052] Throughout the drawings, the same reference numerals will be understood to refer to the same parts, components, and structures. DETAILED DESCRIPTION

[0053] ​The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions can be omitted for clarity and conciseness.

[0054] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but are merely used to enable a comprehensive understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0055] It should be understood that the singular forms “a,” “an,” and “the” include plural referents, unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.

[0056] As used herein, terms and phrases such as “have,” “has,” “can,” “including,” or “comprising” indicate the presence of the feature (e.g., a number, a function, an action, or a component such as a component) and do not exclude the presence of additional features.

[0057] As used herein, the phrases “A or B,” “at least one of A or / and B,” or “one or more of A or / and B” can include all possible combinations of the items listed together. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” can indicate all of the following cases: (1) including at least one A, (2) including at least one B, or (3) including both at least one A and at least one B.

[0058] As used herein, terms such as “first,” “second,” “first,” or “second” can modify various components regardless of order and / or importance and are used to distinguish one component from another component, but do not limit the components. For example, a first user device and a second user device can indicate different user devices regardless of order or importance. For example, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element without departing from the teachings disclosed in the present disclosure.

[0059] When an assembly (e.g., a first assembly) is referred to as being “(operatively or communicatively) coupled to” or “connected to” another assembly (e.g., a second assembly), it should be understood that either assembly can be directly connected to the other assembly, or can be connected via another assembly (e.g., a third assembly). Conversely, when an assembly (e.g., a first assembly) is referred to as being “directly coupled” or “directly connected” to another assembly (e.g., a second assembly), it should be understood that no other assembly (e.g., a third assembly) is intervening between the assembly and the other assembly.

[0060] As used herein, the phrase “configured to” or “set to” can be used interchangeably, depending on the context, with, for example, “adapted to,” “capable of,” “designed to,” “suitable for,” “having the capacity to,” “having the ability to,” “having the potential to,” “made to,” or “able to.” The phrase “configured to” or “set to” does not necessarily mean “specifically designed in hardware to” in some contexts. In some contexts, the phrase “a device configured to” can mean that the device “can” perform an operation on other devices or components. For example, the phrase “a processor configured to perform A, B, and C” can mean a special-purpose processor for performing the corresponding operations (e.g., an embedded processor), or a general-purpose processor (e.g., a CPU or an application processor) that performs the operations by executing one or more software programs stored in a memory device.

[0061] The terms and phrases used herein are provided for describing particular embodiments only and can not be intended to limit other embodiments. The singular forms are intended to include the plural forms, unless the context clearly indicates otherwise. Terms including technical and scientific terms used herein can have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present disclosure belong. The terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. In some cases, even if terms are defined in this specification, they can not be interpreted to exclude embodiments of the present disclosure.

[0062] Examples of the electronic device according to various embodiments of the present disclosure can include at least one of a smartphone, a tablet personal computer (PC), a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop computer, a netbook computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP), a motion graphics expert group (MPEG-1 or MPEG-2) audio layer 3 (MP3) player, a mobile medical device, a camera, or a wearable device. According to various embodiments, the wearable device can include at least one of an accessory-type device (e.g., a watch, a ring, a bracelet, a necklace, a pair of glasses, a pair of contact lenses, or a head-mounted device (HMD)), a fabric or clothing-integrated device (e.g., electronic clothing), a body-attached device (e.g., a skin pad or a tattoo), or a bio-implantable device (an implantable circuit).

[0063] Hereinafter, electronic devices according to various embodiments will be described with reference to the accompanying drawings. In the present disclosure, the term "user" can refer to a person using an electronic device or a device (e.g., an artificial intelligence electronic device) using an electronic device.

[0064] Figure 1a FIG. 1 is an exploded perspective view illustrating an electronic device according to an embodiment of the present disclosure.

[0065] Figure 1b FIG. 1 is an exploded perspective view illustrating an electronic device according to an embodiment of the present disclosure.

[0066] Figure 1c FIG. 1 is an exploded perspective view illustrating an electronic device according to an embodiment of the present disclosure.

[0067] Referring to Figures 1a to 1c , an electronic device 100 (or a foldable electronic device, a flexible display device, a flexible and foldable electronic device, etc.) according to an embodiment of the present disclosure can include a housing 101 (e.g., a first housing 110 and a second housing 120), a hinge housing 150, a hinge structure 200 (e.g., a first hinge structure 200a and a second hinge structure 200b), and a display 160 (or a flexible display, a display module, etc.) disposed at least partially in a front direction (e.g., a z-axis direction) of the hinge structure 200. Additionally or alternatively, the electronic device 100 can include a first cover 119 at least partially covering a rear surface (e.g., a surface facing the -z-axis direction) of the first housing 110, and a second cover 129 at least partially covering a rear surface (e.g., a surface facing the -z-axis direction) of the second housing 120. Alternatively, the first cover 119 can be integrally formed with the first housing 110 to form the rear surface, and the second cover 129 can be integrally formed with the second housing 120 to form the rear surface.

[0068] The housing 101 can include at least one pair of housings rotatable about a predetermined axis. For example, the housing 101 can include a first housing 110 and a second housing 120. The first housing 110 can be arranged to be continuous with the second housing 120 (for example, when a central portion 163 of the display 160 is flattened or when the housing 101 is in an unfolded state), or can be arranged to be side by side with the second housing 120, according to the arrangement shape. Or, when the central portion 163 of the display 160 is folded, one surface of the first housing 110 can be arranged to face one surface of the second housing 120.

[0069] The first housing 110 can be formed, for example, at least partially of a metal material, or can be formed at least partially of a non-metal material. The first housing 110 can be formed of a material having a certain degree of rigidity in order to support at least a portion of the display 160. On at least a portion of a front surface of the first housing 110, one area of the display 160 (for example, at least a portion of the first portion 161 of the display 160 and at least a portion of one side of the central portion 163) can be disposed. At least a portion of the first housing 110 can be adhered to the first portion 161 of the display 160. Or, at least a portion of a front edge of the first housing 110 can be adhered to an edge of the first portion 161 of the display 160. Or, at least a portion of a front surface (a surface in the z-axis direction) of the first housing 110 can be at least partially adhered to the first portion 161 of the display 160. In this regard, an adhesive layer can be at least partially disposed between the first housing 110 and the first portion 161 of the display 160. The first housing 110 is at least partially disposed in a hollow shape, or is disposed such that an empty space is formed by being coupled with the first cover 119, in which an electronic element (for example, a printed circuit board, at least one processor mounted on the printed circuit board, at least one memory, and an element such as a battery) required to drive the electronic device 100 can be disposed.

[0070] According to various embodiments of the present disclosure, edges of the first housing 110 (e.g., three edges other than the remaining edges facing the second housing 120 when the electronic device 100 is in the unfolded state) can protrude from a bottom surface of the central portion of the housing by a predetermined height to enclose at least one side edge of the display 160. Alternatively, on at least one edge of the first housing 110, a side wall facing at least a portion of the edge of the display 160 can be provided. The side wall formed at least partially on the edge of the first housing 110 can be formed to have a specified height at the three edges other than the remaining edges facing the second housing 120. The edge of the first housing 110 facing the second housing 120 can include a recessed portion having at least a portion with a certain curvature such that at least a portion of the hinge housing 150 can be disposed therein. For example, on the edge facing the second housing 120, the first housing 110 can include a first step 111 in which a portion of the first hinge structure 200a located in the hinge housing 150 is disposed and a second step 112 in which a portion of the second hinge structure 200b located in the hinge housing 150 is disposed.

[0071] According to various embodiments of the present disclosure, depending on the arrangement, the second housing 120 can be arranged side by side with the first housing 110, or at least one surface of the second housing 120 can be arranged to face one surface of the first housing 110 (e.g., a surface on which the display 160 is disposed). For example, the second housing 120 can be made of the same material as the first housing 110. Since the second housing 120 and the first housing 110 are arranged to be horizontally or vertically symmetrical in shape, the second housing 120 can be disposed such that a front surface thereof supports at least a portion of an area of the display 160 other than an area disposed on the first housing 110 (e.g., at least a portion of the second portion 162 of the display 160 and at least a portion of another portion of the central portion 163). At least a portion of the second housing 120 can be adhered to the second portion 162 of the display 160. Alternatively, a front edge of the second housing 120 can be adhered to an edge of the second portion 162 of the display 160. Alternatively, a lower side of a front surface of the second housing 120 can be adhered to a side of the second portion 162 of the display 160. In this regard, an adhesive layer can be at least partially disposed between the second housing 120 and the second portion 162 of the display 160. The second housing 120 can be at least partially disposed in a hollow shape similar to the first housing 110, or can be disposed such that an empty space is formed by coupling with the second cover 129, in which the electronic elements required to drive the electronic device 100 can be disposed. According to various embodiments of the present disclosure, the camera 190 can be disposed on a rear surface of the second housing 120, and in relation to the disposition of the camera 190, a hole in which the camera 190 can be disposed can be formed in the second cover 129.

[0072] According to various embodiments of the present disclosure, an edge (e.g., three edges other than the remaining edges facing the first housing 110) of the second housing 120 can protrude from a bottom surface of the central portion of the second housing 120 by a predetermined height to enclose another side edge of the display 160. Alternatively, on at least one edge of the second housing 120, a side wall facing at least a portion of an edge of the display 160 can be disposed, which is similar to the side wall formed on the first housing 110. The side wall at least partially formed on the edge of the second housing 120 can be formed to have a specified height at the three edges other than the remaining edges facing the first housing 110.

[0073] According to various embodiments of the present disclosure, a portion of the second housing 120 facing the first housing 110 can include a recessed portion, at least a portion of which has a certain curvature so that the hinge housing 150 can be disposed therein. For example, the second housing 120 can include a third step in which a portion of the hinge housing 150 having the first hinge structure 200a mounted on an edge facing the first housing 110 is disposed, and a fourth step in which a portion of the hinge housing 150 having the second hinge structure 200b mounted thereon is disposed.

[0074] According to various embodiments of the present disclosure, the electronic device 100 can include at least one sensor disposed within the first housing 110 or the second housing 120. The sensor can include, for example, at least one of a proximity sensor, an illuminance sensor, an iris sensor, an image sensor (or a camera), or a fingerprint sensor.

[0075] According to various embodiments of the present disclosure, depending on the folded state or the unfolded state of the electronic device 100, the hinge housing 150 can be covered by one of the first housing 110 and the second housing 120 (e.g., the unfolded state of the housing 101), or can be exposed to the outside (e.g., the folded state of the housing 101). For example, if the first housing 110 and the second housing 120 are arranged side by side, the hinge housing 150 can be covered by the first housing 110 and the second housing 120. If one surface of the first housing 110 and one surface of the second housing 120 are arranged to face each other, the hinge housing 150 can be disposed such that at least a portion thereof is exposed to the outside at side edges (e.g., edges of the first housing 110 and the second housing 120 facing each other in the unfolded state) of the first housing 110 and the second housing 120. The inside of the hinge housing 150 can be at least partially empty, and the side wall can be disposed such that at least some of the two side edges (e.g., edges in the x-axis and -x-axis directions) are closed. At least one boss fastened to the first hinge structure 200a and the second hinge structure 200b can be disposed on at least a portion of the inside surface of the hinge housing 150.

[0076] According to various embodiments of the present disclosure, at least a portion of the display 160 can have flexibility. According to embodiments of the present disclosure, the display 160 can include a first portion 161 or a first area disposed on the first housing 110, a second portion 162 or a second area disposed on the second housing 120, and a central portion 163 or a central area adjacent to the first housing 110 and the second housing 120 and corresponding to a location of the hinge structure 200 in a state in which the electronic device 100 is in an unfolded state. According to various embodiments of the present disclosure, the entire display 160 can have flexibility. Alternatively, at least a portion of the central portion 163 of the display 160 can have flexibility. The central portion 163 of the display 160 can be disposed such that the first housing 110 and the second housing 120 are not adhered to each other. For example, when the electronic device 100 is folded, the central portion 163 of the display 160 can be spaced apart from a front surface (e.g., a surface in a z-axis direction) of the hinge structure 200. The first portion 161 of the display 160 can be adhered to at least a portion of the first housing 110, and the second portion 162 of the display 160 can be adhered to at least a portion of the second housing 120. In this regard, an adhesive layer can be disposed in at least a portion of an area between the display 160 and the first housing 110 and in at least a portion of an area between the display 160 and the second housing 120, respectively. The display 160 can include various layers. For example, the display 160 can include an outer protective layer (or a glass layer or a polymer layer) having a certain amount of transparency and equal to or greater than a specified size, a display panel layer disposed under the outer protective layer to display a screen, and a first rear layer disposed under the display panel layer. The first rear layer can include an impact absorption layer (or an embossing) and a heat dissipation layer (or a metal sheet layer). Additionally or alternatively, the first rear layer can further include an electromagnetic induction panel (e.g., a digitizer). According to various embodiments of the present disclosure, the display 160 can further include a second rear layer disposed under the first rear layer. The second rear layer can include at least one metal layer (or a metal sheet) at least partially formed of a metal material. The second rear layer can include a certain pattern (e.g., a grid pattern, a slit pattern) such that at least a portion of the second rear layer can be bent. Alternatively, at least a portion of the second rear layer can be formed of another material (e.g., a polymer material, rubber, a leather material) capable of being bent.

[0077] According to various embodiments of the disclosure, at least one hinge structure 200 can be disposed with respect to the x-axis direction. For example, the hinge structure 200 can include a first hinge structure 200a and a second hinge structure 200b. The hinge structure 200 can include a first portion 200_1 disposed inside the hinge housing 150 and a second portion 200_2 disposed above the hinge housing 150 or corresponding to a peripheral structure not overlapping the hinge housing 150 with respect to the z-axis (e.g., a structure combined with the first housing 110 and the second housing 120). In the first portion of the hinge structure 200, at least a portion of the first hinge structure 200a can be disposed in a first area within the hinge housing 150 (e.g., an area offset in the x-axis direction in the hinge housing 150). In the first portion of the hinge structure 200, at least a portion of the second hinge structure 200b can be disposed in a second area within the hinge housing 150 (e.g., an area offset in the -x-axis direction in the hinge housing 150). At least a portion of the second portion of the hinge structure 200 can be rotated in response to a rotation operation of the first housing 110 and the second housing 120. At least one of the first hinge structure 200a and the second hinge structure 200b according to an embodiment of the disclosure can include a plurality of detent structures.

[0078] Figure 2 FIG. 1A is a diagram illustrating an example of a front surface and a rear surface of a hinge structure related to a plurality of detent structures of an electronic device according to an embodiment of the disclosure.

[0079] Figure 3 FIG. 1B is a diagram illustrating a surface in a first direction in an exploded perspective view of a hinge structure according to an embodiment of the disclosure.

[0080] Figure 4 FIG. 1C is a diagram illustrating a surface in a second direction in an exploded perspective view of a hinge structure according to an embodiment of the disclosure.

[0081] Referring to Figure 1a , Figure 1b , Figure 1c , Figure 2 , Figure 3 and Figure 4 , the electronic device 100 according to an embodiment of the disclosure can include a plurality of hinge structures 200, and the first hinge structure 200a and the second hinge structure 200b can have the same structure and shape. Hereinafter, a description will be made based on the first hinge structure 200a. Figure 1a FIG. 1A illustrates a structure in which the first hinge structure 200a and the second hinge structure 200b are disposed in the hinge housing 150; however, the disclosure is not limited thereto, and three or more hinge structures can be mounted on the hinge housing 150.

[0082] According to various embodiments of the present disclosure, the first hinge structure 200a can include rotating parts 211 and 212, a fixed bracket 213, arm parts 221 and 222, idler gears 233 and 234, and a multi-brake structure 240.

[0083] According to various embodiments of the present disclosure, the rotating parts 211 and 212 can form a driving track of the display 160. The rotating parts 211 and 212 can include a first rotating part 211 coupled to one side of the fixed bracket 213 and a second rotating part 212 coupled to the other side of the fixed bracket 213. The first rotating part 211 can rotate in a first angle range (e.g., clockwise or counterclockwise with respect to the x-axis) while being coupled to one side of the fixed bracket 213. The second rotating part 212 can rotate in a second angle range (e.g., counterclockwise or clockwise with respect to the x-axis) while being coupled to the other side of the fixed bracket 213. The first angle range and the second angle range can have the same size and have opposite directions. When the electronic device 100 is in the unfolded state, an edge of the first rotating part 211 in the -y-axis direction can be disposed adjacent to an edge of the second rotating part 212 in the y-axis direction. When the electronic device 100 is in the folded state, an upper surface (e.g., a surface facing the z-axis direction) of the first rotating part 211 and an upper surface (e.g., a surface facing the z-axis direction) of the second rotating part 212 can be disposed to face each other. The first rotating part 211 can rotate in a certain angle range (e.g., within 0 to 100 degrees or within 0 to 95 degrees) about a third axis (13) (or a virtual axis) in the rotating part 211. The second rotating part 212 can rotate in a certain angle range (e.g., within 0 to -100 degrees or within 0 to -95 degrees) about a fourth axis (14) (or a virtual axis) in the rotating part 212. Figure 14 Figure 14 Figure 14 Figure 14

[0084] ​​​​According to various embodiments of the present disclosure, the fixing bracket 213 can be at least partially disposed and fixed in the empty space inside the hinge housing 150. In this regard, at least a portion of the fixing bracket 213 can have a size corresponding to the empty space inside the hinge housing 150. Also, at least a portion of the fixing bracket 213 can have a shape, e.g., a semi-cylindrical shape, corresponding to the empty space inside the hinge housing 150. The fixing bracket 213 can include at least one hole into which at least one boss formed in the hinge housing 150 can be inserted. One side of the first rotating part 211 can be disposed on one side of the fixing bracket 213 so as to be rotatable within a certain angle range, and one side of the second rotating part 212 can be disposed on the other side of the fixing bracket 213 so as to be rotatable within a certain angle range. A portion of the multi-actuator structure 240, e.g., one side of the first rotating shaft 231 and one side of the second rotating shaft 232, and some of the idler gears 233 and 234 can be disposed on one side (an end portion in the x-axis direction) of the front surface of the fixing bracket 213. According to various embodiments of the present disclosure, the first hinge structure 200a can further include a bracket cover 214 disposed close to (e.g., in the z-axis direction) and fastened with the rear surface of the fixing bracket 213 (e.g., the surface that can be seen in the direction from the -z-axis to the z-axis).

[0085] According to various embodiments of the present disclosure, the arm portions (or arm structures) 221 and 222 can rotate about the rotation shafts (e.g., the first rotation shaft 11 and the second rotation shaft 12), while simultaneously sliding on one side of the rotation portions 211 and 212 in response to rotation of the rotation portions 211 and 212 of the electronic device 100, and can implement a braking operation while being engaged with the cam members 241a and 241b. For example, the arm portions 221 and 222 can have one side connected to the rotation portions 211 and 212 by the fastening portions 251 and 252, and can move while sliding along at least a portion of the side surface of the rotation portions 211 and 212 as the rotation portions 211 and 212 rotate. The arm portions 221 and 222 can include, for example, a first arm portion 221 connected to the first rotation portion 211 by a first fastening portion 251 and a second arm portion 222 connected to the second rotation portion 212 by a second fastening portion 252. The first arm portion 221 can include a first cam structure 221_4a and a second cam structure 221_4b fastened to the cam members 241a and 241b included in the multi-brake structure 240, and the second arm portion 222 can include a third cam structure 222_4a and a fourth cam structure 222_4b fastened to the cam members 241a and 241b included in the multi-brake structure 240. When the electronic device 100 is folded or unfolded, the first cam structure 221_4a and the second cam structure 221_4b fastened to the cam members 241a and 241b can implement a cam-type brake. The first arm portion 221 and the second arm portion 222 can provide a hinging force (or a braking sense) of the electronic device 100 by using the cam structures 221_4a, 221_4b, 222_4a, and 222_4b engaged with the cam members 241a and 241b. The arm portions 221 and 222 can not only provide a more robust and stable hinging force (or a braking sense) based on the multi-brake structure 240, but also support improved wear resistance and a softer hinging force (or a braking sense) by the multi-brake structure 240.

[0086] According to various embodiments of the present disclosure, the multi-brake structure 240 can include a first rotation shaft 231, a second rotation shaft 232, a rotation shaft support member 235, a stopper 236, a first cam member 241a, a second cam member 241b, a center rod 243c, a center bracket 243a, a shaft bracket 243b, support rings 292_1 and 292_2, a plurality of fixing clips 291_1, 291_2, 291_3, and 291_4, and a plurality of elastic bodies 242a, 242b, 242c, and 242d.

[0087] According to various embodiments of the present disclosure, the first rotation shaft 231 and the second rotation shaft 232 can provide a cam-type hinging force (or a braking sense). The first rotation shaft 231 and the second rotation shaft 232 can have a length longer than an interval distance between the cam structures formed on the arm portions 221 and 222. The first rotation shaft 231 and the second rotation shaft 232 can be disposed to be spaced apart from each other and can be disposed to be parallel to each other in the x-axis direction. The shaft gears 231_2 and 232_2 can be formed on the first rotation shaft 231 and the second rotation shaft 232, respectively, and the respective shaft gears 231_2 and 232_2 can be disposed to be engaged with different idlers (e.g., the first idler 233, the second idler 234). Accordingly, the arm portions 221 and 222 of the hinge structure 200 can be rotated at the same angle at the same time point by the force generated when the first rotation portion 211 and the second rotation portion 212 are rotated. The first rotation shaft 231 can be rotated about the first axis 11, and the second rotation shaft 232 can be rotated about the second axis 12.

[0088] According to various embodiments of the present disclosure, one side of the rotation shaft support member 235, one side of the stopper 236, one side of the center bracket 243a, one side of the shaft bracket 243b, the first support ring 292_1, and the first fixing clip 291_1 can be placed on the first rotation shaft 231. The first cam 241a_1a formed on the first cam member 241a, the third cam 241b_1a formed on the second cam member 241b, the first cam structure 221_4a and the second cam structure 221_4b of the first arm portion 221, the first elastic body 242a, and the third elastic body 242c can be placed on the first rotation shaft 231. The first shaft gear 231_2 can be formed on the first rotation shaft 231, and at least a portion of the first shaft gear 231_2 can be disposed to be engaged with the first idler 233. One end (e.g., an end portion in the x-axis direction) of the first rotation shaft 231 can be disposed on one side (e.g., an end portion in the -x-axis direction) of the fixed bracket 213.

[0089] According to various embodiments of the present disclosure, the other side of the rotation shaft support member 235, the other side of the stopper 236, the other side of the center bracket 243a, the other side of the shaft bracket 243b, the second support ring 292_2, and the second fixing clamp 291_2 can be placed on the second rotation shaft 232. The second cam 241a_1b formed on the first cam member 241a, the fourth cam 241b_1b formed on the second cam member 241b, the third cam structure 222_4a and the fourth cam structure 222_4b of the second arm part 222, the second elastic body 242b, and the fourth elastic body 242d can be placed on the second rotation shaft 232. The second shaft gear 232_2 can be formed on the second rotation shaft 232, and at least a portion of the second shaft gear 232_2 can be disposed to be engaged with the second idler 234. One end (e.g., the end in the x-axis direction) of the second rotation shaft 232 can be disposed on one side (e.g., the end in the -x-axis direction) of the fixed bracket 213.

[0090] According to various embodiments of the present disclosure, the rotation shaft support member 235 can include a first ring 235_1 fastened to the first rotation shaft 231 and a second ring 235_2 connected to the second rotation shaft 232, and a ring body 235_3 facing one side of the idlers 233 and 234 when the first ring 235_1 and the second ring 235_2 are connected. The ring body 235_3 can include a first hole 235_3a into which one side of the first idler 233 can be inserted and a second hole 235_3b into which one side of the second idler 234 can be inserted. The rotation shaft support member 235 can be disposed between the stopper 236 and the shaft gears 231_2 and 232_2 formed on the rotation shafts 231 and 232. The rotation shaft support member 235 can be disposed to surround at least a portion of the idlers 233 and 234 to guide the idlers 233 and 234 so as not to deviate from the designated positions.

[0091] According to various embodiments of the present disclosure, the center pole 243c can be disposed in a pole shape having a length in the x-axis direction that is longer than a length in the y-axis direction, and can be disposed between the first rotation axis 231 and the second rotation axis 232 to cover a space between the first rotation axis 231 and the second rotation axis 232. The center pole 243c can include at least one protrusion formed in the -z-axis direction. The at least one protrusion can be fastened to a hole formed in the center bracket 243a and a hole formed in the shaft bracket 243b. The center pole 243c can move in the z-axis or -z-axis direction as the first arm portion 221 and the second arm portion 222 rotate. For example, the center pole 243c can move in the z-axis direction to support the display 160 in a state in which the electronic device 100 is unfolded, and can move downward in the z-axis direction by a predetermined distance to secure a distance from the display 160 so that the display 160 is not damaged by a drop impact or an external force in a state in which the electronic device 100 is folded.

[0092] According to various embodiments of the present disclosure, the shaft bracket 243b can be disposed between the support rings 292_1 and 292_2 and the first and second elastic bodies 242a and 242b. The shaft bracket 243b can include a ring-shaped wing that can be placed on the first and second rotation axes 231 and 232, and can include a main body to support the wing. The shaft bracket 243b can be fastened to the protrusion formed on the center pole 243c. The shaft bracket 243b can guide the first and second rotation axes 231 and 232 to maintain a predetermined distance as the first and second rotation axes 231 and 232 rotate.

[0093] According to various embodiments of the present disclosure, the plurality of fixing clips 291_1, 291_2, 291_3, and 291_4 can include a first fixing clip 291_1 coupled to one side (e.g., an end portion in the -x-axis direction) of the first rotating shaft 231, a second fixing clip 291_2 coupled to one side (e.g., an end portion in the -x-axis direction) of the second rotating shaft 232, a third fixing clip 291_3 coupled to one side (an end portion in the -x-axis direction) of the first fastening portion 251, and a fourth fixing clip 291_4 coupled to one side (an end portion in the -x-axis direction) of the second fastening portion 252. The first fixing clip 291_1 can be used to fix at least one of components (e.g., at least one of the first support ring 292_1, one side of the shaft support 243b, the first elastic body 242a, the first cam 241a_1a, one side of the center support 243a, the third elastic body 242c, the third cam 241b_1a, one side of the stopper 236, and one side of the rotating shaft support member 235) placed on the first rotating shaft 231 from deviating to one side (-x-axis direction). The second fixing clip 291_2 can be used to fix at least one of components (e.g., at least one of the second support ring 292_2, the other side of the shaft support 243b, the second elastic body 242b, the second cam 241a_1b, the other side of the center support 243a, the fourth elastic body 242d, the fourth cam 241b_1b, the other side of the stopper 236, and the other side of the rotating shaft support member 235) placed on the second rotating shaft 232 from deviating to one side (-x-axis direction). The third fixing clip 291_3 can be used to prevent the first fastening portion 251 inserted through the first arm portion 221 and the first rotating portion 211 from being separated from the first arm portion 221 or the first rotating portion 211 when the first arm portion 221 slides along the side surface of the first rotating portion 211. The fourth fixing clip 291_4 can be used to prevent the second fastening portion 252 inserted through the second arm portion 222 and the second rotating portion 212 from being separated from the second arm portion 222 and the second rotating portion 212 when the second arm portion 222 slides along the side surface of the second rotating portion 212.

[0094] According to various embodiments of the present disclosure, the plurality of elastic bodies 242a, 242b, 242c, and 242d can include, for example, a first elastic body 242a disposed between one side of the shaft support 243b and a first cam 241a_1a of the first cam member 241a, a second elastic body 242b disposed between the other side of the shaft support 243b and a second cam 241a_1b of the first cam member 241a, a third elastic body 242c disposed between one side of the center support 243a and a third cam 241b_1a of the second cam member 241b, and a fourth elastic body 242d disposed between the other side of the center support 243a and a fourth cam 241b_1b of the second cam member 241b. The plurality of elastic bodies 242a, 242b, 242c, and 242d can respectively provide an elastic force required for cam motion of the first cam member 241a and the second cam member 241b. According to embodiments of the present disclosure, in order to provide the same hinging force (or a sense of braking) during the rotation operation of the electronic device 100, the first elastic body 242a and the second elastic body 242b (or the third elastic body 242c and the fourth elastic body 242d) can have the same characteristics. For example, the plurality of elastic bodies 242a, 242b, 242c, and 242d can have the same or similar spring structures in length, thickness, and diameter. Alternatively, according to various embodiments of the present disclosure, the plurality of elastic bodies 242a, 242b, 242c, and 242d can have different lengths, thicknesses, and diameters (for example, the first elastic body 242a and the second elastic body 242b have the same or similar first length, first thickness, and first diameter, and the third elastic body 242c and the fourth elastic body 242d have the same or similar second length (different from the first length), second thickness (different from the first thickness), and second diameter (different from the first diameter)).

[0095] As described above, the hinge structures 200a and 200b according to embodiments of the present disclosure can include the rotation parts 211 and 212 coupled to the hinge housing 150 and the housings 110 and 120 and participating in the folding or unfolding operation of the display 160 placed on the upper side, the multi-brake structure 240 connected to the rotation parts 211 and 212, and a gear structure (for example, the shaft gears of the first and second rotation shafts 231 and 232 and the idlers 233 and 234) for supporting the simultaneous rotation of the first and second housings 110 and 120.

[0096] With the above configuration, the hinge structures 200a and 200b can rotate about virtual axes (or third and fourth axes 13 and 14) formed above the surfaces of the rotating parts 211 and 212 to implement folding or unfolding of the display 160, and can suppress twisting of the housings 110 and 120 during the hinge operation by providing an improved braking feeling based on the plurality of cam structures and supporting simultaneous hinge operation of the housings 110 and 120 based on the gear structure (e.g., the pinion gears on the first and second rotating shafts 231 and 232 and the idler gears 233 and 234). In addition, the hinge structures 200a and 200b can support a temporarily fixed state of the housings 110 and 120 and an unfolded state or a folded state, the temporarily fixed state including a partially folded state at a certain angle (e.g., an angle between the front surface of the first housing 110 and the front surface of the second housing 120) between, for example, 30 degrees and 60 degrees.

[0097] To increase the braking load in the hinge structure according to the embodiments of the disclosure, it is necessary to increase the elastic force acting on the cam motion, and thus, it is necessary to expand the free field of the spring (e.g., elastomer), reduce the number of coils of the spring, or increase the wire diameter of the spring; however, the free field expansion and the reduction in the number of coils of the spring have a slight effect on increasing the load, and increasing the load beyond a certain value can exceed the allowable stress limit of the spring, thereby causing the spring to be damaged. To increase the spring load, the inner diameter of the spring can be reduced or the outer diameter of the spring can be increased, and to reduce the inner diameter, the diameters of the rotating shafts 231 and 232 will be reduced, which can cause the concentricity of the rotating shafts 231 and 232 to decrease and warping to occur in the process of manufacturing the parts. Also, for the increase in the outer diameter, there can be a case where interference with surrounding parts related to the spring occurs or additional space is required to exclude part interference (e.g., the thickness of the hinge structure and the thickness of the electronic device 100 are increased accordingly). Also, for the increase in the limited elastic force of the spring, the load can be concentrated on the cam assembly, which can accelerate wear. In this regard, the hinge structures 200a and 200b of the electronic device 100 according to the various embodiments of the disclosure can improve the wear performance by increasing the maximum load and constant load acting on the cam motion through the plurality of elastomers 242a, 242b, 242c, and 242d in a state in which the plurality of cam members 241a and 241b are fastened to the arm portions 221 and 222 and suppressing the increase in space (e.g., reducing or preventing the increase in the thickness of the hinge structure) (e.g., as the number of cam structures and cams increases, the loss load decreases as the number increases, e.g., four cam structures provide 1 / 4 of the loss load). According to the various embodiments of the disclosure, the first elastomer 242a and the third elastomer 242c can have the same length, and the second elastomer 242b and the fourth elastomer 242d can have the same length. According to the various embodiments of the disclosure, the first elastomer 242a and the third elastomer 242c have different lengths, and in a state in which the lengths of the second elastomer 242b and the fourth elastomer 242d are different from each other, the sum of the lengths of the first elastomer 242a and the third elastomer 242c can be equal to the sum of the lengths of the second elastomer 242b and the fourth elastomer 242d.

[0098] Figure 5 FIG. 1 is a diagram illustrating an example of a rotating portion according to an embodiment of the disclosure.

[0099] Before the description, Figure 5 The rotating portion illustrated is the above-described Figure 3 and Figure 4An example of the second rotating part in the electronic device 100 will be described with reference to FIG. 11. The second rotating part 212 can have the same size, shape, and material as the first rotating part 211, except for the structure in which the second rotating part 212 is symmetrical to the first rotating part 211 with respect to the first axis 11 (or the second axis 12). In the following description, the structure of the rotating part will be described based on the second rotating part 212.

[0100] Referring to Figure 5 , the second rotating part 212 according to an embodiment of the disclosure can include a bracket body 212_1, a sliding hole 212_2 formed at one end (e.g., an end portion in the -x axis direction) of the bracket body 212_1, a rail 212_3 formed at the other end (e.g., an end portion in the -y axis direction) of the bracket body 212_1, and a housing coupling hole 212_4 for coupling with the second housing (e.g., Figures 1a to 1c of the electronic device 100). Similarly to the second rotating part 212, the first rotating part 211 described above in Figure 3 or Figure 4 may include a bracket body, a sliding hole, a rail, and a housing coupling hole.

[0101] According to various embodiments of the disclosure, the bracket body 212_1 has a relatively longer length in the x axis than in the y axis, at least a portion of a surface facing the z axis is formed to be flat, and at least a portion of a surface facing the -z axis is also flat as a whole. Based on the illustrated drawing, the sliding hole 212_2 is formed at the right end (e.g., an end portion in the -x axis direction) of the bracket body 212_1 to face the lower direction (e.g., the -z axis direction), and the rail 212_3 can be disposed at one end (e.g., an end portion in the -y axis direction) of the bracket body 212_1 to face the lower surface (e.g., a surface in the -z axis direction). At least one housing coupling hole 212_4 for coupling the second housing 120 can be disposed in the bracket body 212_1. In the illustrated drawing, three housing coupling holes 212_4 are arranged; however, the disclosure is not limited thereto. For example, two or more housing coupling holes 212_4 can be formed, and the two or more housing coupling holes 212_4 can be disposed to be spaced apart from the bracket body 212_1. According to various embodiments of the disclosure, at least one bracket coupling hole 212_5 can be disposed in the bracket body 212_1. The bracket coupling hole 212_5 is fastened to the coupling protrusion formed on the fixing bracket 213 when the electronic device 100 is in the unfolded state, and can be separated from the coupling protrusion of the fixing bracket 213 when the electronic device 100 is in the folded state. The number of the bracket coupling hole 212_5 can correspond to the number of the coupling protrusion of the fixing bracket 213.

[0102] According to various embodiments of the present disclosure, the sliding hole 212_2 can be disposed at the other end (e.g., the end in the -x-axis direction) of the bracket body 212_1 and can be disposed under the bracket body 212_1. The sliding hole 212_2 can be formed to have a length in the first direction (e.g., the y-axis direction) that is longer than a length in the third direction (e.g., the x-axis direction). Accordingly, the second fastening portion 252 inserted into the sliding hole 212_2 can slide in either of the first direction (e.g., the y-axis direction) and the second direction (e.g., the -y-axis direction) within the sliding hole 212_2. The sliding hole 212_2 can be disposed to face a surface (e.g., a surface disposed in the -x-axis direction) of the second arm portion 222 in the fourth direction. At least a portion of the sliding hole 212_2 can be aligned with the connection hole of the second arm portion 222. Accordingly, at least a portion of the second fastening portion 252 can be disposed within the sliding hole 212_2 and the connection hole.

[0103] According to various embodiments of the present disclosure, the rail 212_3 can be disposed at the end (e.g., the end in the -y-axis direction) of the bracket body 212_1 in the second direction and can be disposed under the bracket body 212_1. The rail 212_3 can have an arc shape of a predetermined angle. The rail 212_3 can be inserted into a rail groove (or a rail-type hole) disposed on the fixing bracket 213 and can rotate within a designated rotation range along the rail groove. According to an embodiment of the present disclosure, the rotation range of the rail 212_3 can include within the angle of the arc shape forming the shape of the rail 212_3. For example, the rotation range of the rail 212_3 can be at least a part of the range of -10 degrees to 100 degrees (e.g., the range of 0 degrees to 95 degrees). The rail 212_3 can rotate between the -z-axis and the z-axis based on the fourth axis 14 formed by the rail groove of the fixing bracket 213.

[0104] The housing coupling hole 212_4 can be formed on one side (e.g., one side edge facing the y-axis direction) of the bracket body 212_1 and can be formed to penetrate the surface in the first direction (e.g., the surface in the y-axis direction) and the surface in the second direction (e.g., the surface in the -y-axis direction). In the illustrated drawing, the bracket body 212_1 is illustrated as forming three housing coupling holes 212_4; however, the present disclosure is not limited to this number.

[0105] Figure 6 FIG. 1 is a diagram illustrating an example of a fixing bracket according to an embodiment of the present disclosure.

[0106] Referring to Figure 6 At least a portion of the shape of the lower surface (e.g., the surface in the -z-axis direction) of the fixing bracket 213 can include a curved surface. For example, the lower surface of the fixing bracket 213 can be formed to correspond to the hinge housing (e.g., Figure 1c An upper surface (a surface in the z-axis direction) of the fixed bracket 213 can be provided in a flat shape, and can have rail grooves 213a and 213b (or rail holes) formed such that the rotating brackets (e.g., the rotating brackets 211 and 212 in the hinge housing 150) are coupled thereto. According to an embodiment of the disclosure, the fixed bracket 213 can include a first rail groove 213a having at least partially an arc shape in a z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis), and a rail of the first rotating part 211 is inserted into the first rail groove from a first direction (e.g., the y-axis direction) to a second direction (e.g., the -y-axis direction). Figure 2

[0107] Referring to Figure 3 and Figure 6 According to an embodiment of the disclosure, the fixed bracket 213 can include a second rail groove 213b having at least partially an arc shape in a z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis), and a rail 212_3 of the second rotating part 212 is inserted into the second rail groove from a second direction (e.g., the -y-axis direction) to a first direction (e.g., the y-axis direction). The first rail groove 213a can be disposed to be offset in the -y-axis direction compared to the second rail groove 213b, and the second rail groove 213b can be disposed to be offset in the y-axis direction compared to the first rail groove 213a. The first rail groove 213a can be rotatable about a third axis 13, and the second rail groove 213b can be rotatable about a fourth axis 14. The third axis 13 and the fourth axis 14 can be formed above (in the air) an upper surface (e.g., a surface in the z-axis direction) of the fixed bracket 213, and the third axis 13 and the fourth axis 14 can be formed to be spaced apart by the first rail groove 213a disposed to be offset in the -y-axis direction and the second rail groove 213b disposed to be offset in the y-axis direction. According to an embodiment of the disclosure, the fixed bracket 213 can include a first recess 213_2a in which one end of the first rotating shaft 231 is disposed, and a second recess 213_2b in which one end of the second rotating shaft 232 is disposed, the first recess and the second recess being formed on one side disposed in a third direction (e.g., the x-axis direction).

[0108] ​According to various embodiments of the present disclosure, the fixing bracket 213 can include a first fixing hole 213_1a and a second fixing hole 213_1b for fixing the fixing bracket 213 to the hinge housing 150. The electronic device 100 can fix the fixing bracket 213 to the hinge housing 150 by using a coupling member (for example, a coupling member such as a screw). According to an embodiment of the present disclosure, the first fixing hole 213_1a and the second fixing hole 213_1b can be disposed to be symmetrically inclined on the upper surface (for example, the surface in the z-axis direction) of the fixing bracket 213 in order to more firmly and stably fix the fixing bracket 213 to the hinge housing 150.

[0109] According to various embodiments of the present disclosure, the fixing bracket 213 can include at least one bracket protrusion 213_3 inserted into a bracket coupling hole 212_5 formed in the first rotating part 211. Furthermore, in the same manner as the first rotating part 211, a bracket coupling hole can be formed in the second rotating part 212, and the fixing bracket 213 can include a bracket protrusion of the same shape at a position symmetrical to the bracket protrusion 213_3 inserted into the bracket coupling hole 212_5 of the first rotating part 211 with respect to the -x axis. According to an embodiment of the present disclosure, a plurality of bracket protrusions 213_3 can be disposed on the surface of the fixing bracket 213 in the z-axis direction. For example, a plurality of bracket protrusions 213_3 can be disposed at each edge of the surface of the fixing bracket 213 in the z-axis direction.

[0110] Figure 7 FIG. 1 is a diagram illustrating an example of an arm part according to an embodiment of the present disclosure.

[0111] Before the description, Figure 7 the arm part shown represents a second arm part with reference Figure 3 to the first arm part 221. The second arm part 222 has a similar shape (for example, a shape symmetrical with respect to the x-axis) to the first arm part 221 and can be formed of the same size and material. Hereinafter, the second arm part among the first arm part and the second arm part of Figure 3 will be described.

[0112] With reference to Figure 3 and Figure 7 , the second arm part 222 according to an embodiment of the present disclosure can be fastened to the second rotating part 212 via a second fastening part (for example, the second fastening part 252 in Figure 3 and can rotate together with the second rotating part 212 when a hinge operation is performed. According to an embodiment of the present disclosure, the second arm part 222 can include a base 222_1, a connection part 222_2, a third cam structure 222_4a, and a fourth cam structure 222_4b.

[0113] According to various embodiments of the present disclosure, at least a portion of an upper surface (e.g., a surface disposed toward the z-axis) of the base 222_1 can be formed to be flat. The connection portion 222_2 can be disposed on at least a portion of a lower surface (e.g., a surface in the -z-axis direction) of an upper edge (e.g., an end portion in the y-axis direction) of the base 222_1. The connection portion 222_2 can be formed to have a ring shape or a tube shape with a predetermined thickness. For example, the connection portion 222_2 can include a hole 222_21 that is open in the third direction (e.g., the x-axis direction or the -x-axis direction). At least a portion of the second fastening portion 252 can be disposed in the hole 222_21 of the connection portion 222_2. In this regard, the size of the hole 222_21 of the connection portion 222_2 can have a size similar to the diameter of the second fastening portion 252. The third cam structure 222_4a and the fourth cam structure 222_4b can be disposed on a lower surface (e.g., a surface in the -z-axis direction) of a lower edge (e.g., an end portion in the -y-axis direction) of the base 222_1. The third cam structure 222_4a and the fourth cam structure 222_4b can be disposed on the edge of the base 222_1 in the -y-axis direction, and the connection portion 222_2 can be disposed on the edge of the base 222_1 in the y-axis direction.

[0114] According to various embodiments of the present disclosure, the third cam structure 222_4a can include a first fastening hole 222_4a1 having a uniform diameter in a direction from the x-axis to the -x-axis, a first holding portion 222_4a2 supporting the center rod 243c, a stepped dog 222_4a3 at least partially engaged with the center bracket 243a, and a first cam protrusion 222_4a4 for cam motion.

[0115] According to various embodiments of the present disclosure, at least a portion of the second rotation shaft 232 can be inserted into the first fastening hole 222_4a1. The first fastening hole 222_4a1 can be formed to have the same or similar shape as a cross-section (e.g., a cross-section cut in a direction from the z-axis to the -z-axis) of one side of the second rotation shaft 232. For example, at least a portion of the cross-section of the first fastening hole 222_4a1 (e.g., the cross-section of the first fastening hole 222_4a1 when the third cam structure 222_4a is cut in a direction from the z-axis to the -z-axis) can include a straight line. The first fastening hole 222_4a1 can be disposed on the same axis (e.g., the second axis 12) as the second fastening hole 222_4b1 of the fourth cam structure 222_4b.

[0116] According to various embodiments of the present disclosure, the first holding portion 222_4a2 can protrude a predetermined length from one side of the periphery forming the first fastening hole 222_4a1 in the -y-axis direction. At least a portion of the z-axis cross section of the first holding portion 222_4a2 can include a triangle. According to various embodiments of the present disclosure, the z-axis cross section of the first holding portion 222_4a2 can have a shape that gradually decreases from the y-axis to the -y-axis. An upper surface (e.g., a surface facing the z-axis direction) of the first holding portion 222_4a2 can be positioned lower than an upper surface (e.g., a surface facing the z-axis direction) of the base body 222_1 with respect to the z-axis. According to embodiments of the present disclosure, the first holding portion 222_4a2 can be positioned between one upper side (e.g., a point in the z-axis direction) and one lower side (e.g., a point in the -z-axis direction) of the periphery forming the first fastening hole 222_4a1, and can be formed to protrude in the -y-axis direction from one side (a point in the -y-axis direction) of the periphery of the first fastening hole 222_4a1. The first holding portion 222_4a2 can be integrally formed with the periphery forming the first fastening hole 222_4a1. In this regard, the first holding portion 222_4a2 can be formed of the same material as the periphery of the first fastening hole 222_4a1 or the base body 222_1.

[0117] According to various embodiments of the present disclosure, the stepped catch 222_4a3 is disposed to facilitate assembly with the center holder 243a, and can guide the center holder 243a so that it does not separate before the rotation shaft is assembled. The stepped catch 222_4a3 can be formed to further protrude a predetermined height in the x-axis direction from a side surface of the periphery of the first fastening hole 222_4a1 facing the x-axis direction. The stepped catch 222_4a3 can be disposed to surround the first fastening hole 222_4a1. In this regard, at least one of the outer circumferential surface or the inner circumferential surface of the stepped catch 222_4a3 can be circular or elliptical. According to various embodiments of the present disclosure, the inner circumferential surface of the stepped catch 222_4a3 can have a shape corresponding to the shape of the first fastening hole 222_4a1 (e.g., at least a portion of the z-axis cross section includes a straight line). The stepped catch 222_4a3 can be disposed at least partially on the annular ring disposed in the center holder 243a.

[0118] According to various embodiments of the present disclosure, the first cam protrusion 222_4a4 can protrude a predetermined height in the -x-axis direction from a side surface of the first fastening hole 222_4a1 facing the -x-axis direction among the periphery thereof, and the protrusion height can vary according to the position. For example, a z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of the first cam protrusion 222_4a4 can have a circular shape or a shape in which at least a portion thereof includes a straight line and the remaining portion thereof includes a curved line (at least a portion includes a D-shaped cut form). The first cam protrusion 222_4a4 can have a non-flat shape in the -x-axis direction. The first cam protrusion 222_4a4 having a non-flat shape in the -x-axis direction can at least partially include a curved cross section. The height of the peak of the irregularity can be the same in the -x-axis direction, and the depth of the valley of the irregularity can be the same in the x-axis direction. The center portion of the peak and the valley of the irregularity can include a flat area having a predetermined length.

[0119] According to various embodiments of the present disclosure, the fourth cam structure 242_4b can include a second fastening hole 222_4b1 having a uniform diameter in a direction from the x-axis to the -x-axis, a second holding portion 222_4b2 supporting the center rod 243c, a protrusion 222_4b3 at least partially engaged with the stopper 236, and a second cam protrusion 222_4ab for cam motion. The fourth cam structure 222_4b can be disposed on one side of the base 222_1 and can be disposed to be spaced apart from the third cam structure 222_4a by a predetermined distance. The spaced distance between the third cam structure 222_4a and the fourth cam structure 222_4b can vary according to the size or shape of at least one of the elastic body, the cam member, and the center support 243a disposed between the third cam structure 222_4a and the fourth cam structure 222_4b.

[0120] According to various embodiments of the present disclosure, at least a portion of the second rotation shaft 232 can be inserted into the second fastening hole 222_4b1. The second fastening hole 222_4b1 can be formed in a shape identical or similar to a cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of one side of the second rotation shaft 232. Accordingly, at least a portion of the cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of the second fastening hole 222_4b1 can have the same shape as the first fastening hole 222_4a1. The second fastening hole 222_4b1 can be disposed on the same axis (e.g., the second axis 12) as the first fastening hole 222_4a1 of the fourth cam structure 242_4b.

[0121] According to various embodiments of the present disclosure, the second holding portion 222_4b2 can be provided in the same or similar shape as the first mounting portion 222_4a2. For example, the second holding portion 222_4b2 can be formed between one upper side (e.g., one point in the z-axis direction) and one lower side (e.g., one point in the -z-axis direction) of the periphery of the second fastening hole 222_4b1, and can be provided to protrude in the -y-axis direction. According to an embodiment of the present disclosure, similar to the first holding portion 222_4a2, the second mounting portion 222_4b2 can have a shape in which the protrusion width gradually decreases in the direction from the z-axis to the -z-axis.

[0122] According to various embodiments of the present disclosure, the protrusion portion 222_4b3 can have a predetermined thickness on one surface facing the -x-axis direction in the periphery of the second fastening hole 222_4b1, and can protrude in the -x-axis direction by a predetermined length. According to an embodiment of the present disclosure, the protrusion height of the protrusion portion 222_4b3 can have a height corresponding to the shape of one side of the stopper 236. The thickness of the protrusion portion 222_4b3 can have the same width as the width of the periphery of the second fastening hole 222_4b1, and can have a width smaller than the total width of the periphery. The protrusion portion 222_4b3 can define a limit angle at which the second arm portion 222 rotates within a specified angle range (e.g., within a range of 0 degrees to 100 degrees or 0 degrees to -100 degrees).

[0123] According to various embodiments of the present disclosure, the second cam protrusion portion 222_4b4 can have the same or similar shape as the first cam protrusion portion 222_4a4. According to an embodiment of the present disclosure, the second cam protrusion portion 222_4b4 can include an irregular portion protruding in the x-axis direction from one surface facing the x-axis direction in the periphery of the second fastening hole 222_4b1. The second cam protrusion portion 222_4b4 can include at least one peak portion and a valley portion. The central portion of the peak portion or the valley portion of the second cam protrusion portion 222_4b4 can be formed to be flat. The size of a certain area at the central portion of the peak portion or the valley portion of the second cam protrusion portion 222_4b4 (e.g., the size of the flat area) can be formed to be equal to the size of a certain area at the central portion of the peak portion or the valley portion of the first cam protrusion portion 222_4a4. According to various embodiments of the present disclosure, in order to provide a smoother hinging force (or a braking sense), the size of a certain area at the central portion of the peak portion or the valley portion of the second cam protrusion portion 222_4b4 (e.g., the size of the flat area) can be formed to be different from the size of a certain area at the central portion of the peak portion or the valley portion of the first cam protrusion portion 222_4a4.

[0124] According to various embodiments of the present disclosure, the protrusions (or irregularities, or peaks and valleys) of the third cam structure 222_4a and the fourth cam structure 222_4b can be disposed in different directions (for example, -x-axis direction). Alternatively, the directions of the protrusions of the third cam structure 222_4a and the fourth cam structure 222_4b can be different from each other. For example, the protrusion direction of the third cam structure 222_4a can be the -x-axis direction, and the protrusion direction of the fourth cam structure 222_4b can be the x-axis direction. According to the arrangement direction of the cam structures 222_4a and 222_4b, the directions of the cams (for example, 241a_1b and 241b_1b) can also be arranged to engage with the cam structures 222_4a and 222_4b.

[0125] According to various embodiments of the present disclosure, the second arm portion 222 having the above-described structure can rotate about the second rotation axis 232. In an arrangement state in which one side (for example, the second cam 241a_1b) of the first cam member 241a engages with the third cam structure 222_4a and one side (for example, the fourth cam 241b_1b) of the second cam member 241b engages with the fourth cam structure 222_4b, the second elastic body 242b can provide an elastic force to the second cam 241a_1b and the third cam structure 222_4a, and the fourth elastic body 242d can provide an elastic force to the fourth cam 241b_1b and the fourth cam structure 222_4b. The third cam structure 222_4a and the fourth cam structure 222_4b can simultaneously or in multiple stages perform cam motion. According to an embodiment of the present disclosure, the electronic device 100 can provide the third cam structure 222_4a and the fourth cam structure 222_4b, the cam structures required for cam motion are divided into the third cam structure and the fourth cam structure, and thus there is no increase in the size of the elastic body (for example, an increase in the diameter of the elastic body) or an increase in the thickness (for example, the width of the wire forming the elastic body), which makes it possible to provide a high elastic force without increasing the thickness of the electronic device 100. Furthermore, since the electronic device 100 can provide rigidity and improved (or greater) hinging force (or a sense of braking or pressure) by a high elastic force, even if a display having an increased tension, rigidity, or reaction force (for example, an increased thickness) is used, the folded state or the unfolded state of the electronic device 100 can be stably provided. By using an arm portion including a plurality of cam structures, the electronic device 100 can more stably provide various holding angles.

[0126] Based on the first axis 11 or the second axis 12, the second arm portion 222 including the above-described third cam structure 222_4a and the fourth cam structure 222_4b can have the same (or similar) configuration and shape as the first arm portion 221 including the first cam structure 221_4a and the second cam structure 221_4b.

[0127] Figure 8 FIG. 2 is a diagram illustrating an example of a second rotating shaft according to an embodiment of the disclosure.

[0128] Before the description, Figure 8 The illustrated second rotating shaft can have the same shape and material as the first rotating shaft.

[0129] Referring to Figure 3 and Figure 8 According to an embodiment of the disclosure, the second rotating shaft 232 can include a column portion 232_1, a shaft gear 232_2 (e.g., a second shaft gear 232_2 in Figure 3 ), a ring holding groove 232_3, and a plate mounting groove 232_4. The second rotating shaft 232 can rotate about the second axis 12 within a predetermined angle range (e.g., an angle range from 0 degrees to 100 degrees or from 0 degrees to -100 degrees) as the second arm portion 222 rotates.

[0130] According to various embodiments of the disclosure, one end (e.g., an end in the x-axis direction) of the column portion 232_1 can be fastened to one side of the fixed bracket 213, and the other end (e.g., an end in the -x-axis direction) thereof can be fastened to the fixed clip (e.g., 291_2). The column portion 232_1 can have a rod shape in which the length in the x-axis direction is relatively longer than the length in the y-axis direction. At least a portion of the z-axis cross section (e.g., a cross section cut in the direction from the z-axis to the -z-axis) of the column portion 232_1 can include a curved line, and the remaining portion thereof can include a straight line. For example, in the column portion 232_1, at least a portion of one surface in the z-axis direction and at least a portion of one surface in the -z-axis direction can be formed as a straight line in the cross section (a cross section cut in the direction from the z-axis to the -z-axis), and at least a portion of one surface in the y-axis direction and at least a portion of one surface in the -y-axis direction can be formed as a curved shape. Accordingly, at least a portion of the upper portion of the column portion 232_1 in the z-axis direction or the -z-axis direction can be formed as a flat surface, and at least a portion of the side surface in the y-axis direction or the -y-axis direction can be formed as a curved surface. The total length of the column portion 232_1 can vary according to components placed on the second rotating shaft 232. For example, one side of the rotating shaft support member 235, one side of the stopper 236, the first fastening hole 222_4a1 of the third cam structure 222_4a, the second fastening hole 222_4b1 of the fourth cam structure 222_4b, the second cam 241_1b, the fourth cam 241b_1b, the second elastic body 242b, the fourth elastic body 242d, one side of the center bracket 243a, one side of the shaft bracket 243bb, the support rings 292_1 and 292_2, and the fixed clip can be coupled to the column portion 232_1.

[0131] According to various embodiments of the present disclosure, the shaft gear 232_2 can be disposed to be offset in the x-axis direction from one end of the column portion 232_1. The shaft gear 232_2 has a larger cross-section than a z-axis cross-section (e.g., a cross-section cut in a direction from the z-axis to the -z-axis) of the column portion 232_1, and a gear can be formed on an outer circumferential surface of the shaft gear 232_2. The shaft gear 232_2 can be disposed to engage with, for example, an idler (e.g., 234). The shaft gear 232_2 can be disposed between the end of the column portion 232_1 in the x-axis direction and the plate holding groove 232_4.

[0132] According to various embodiments of the present disclosure, the plate holding groove 232_4 can be formed on one side (e.g., at least a portion of a surface facing the z-axis direction) of an upper surface of the column portion 232_1. At least a portion of the rotation shaft support member 235 can be held in the plate holding groove 232_4. The plate holding groove 232_4 can be formed by engraving lower than a periphery on one surface of the upper surface of the column portion 232_1. The plate holding groove 232_4 can be disposed so that the rotation shaft support member 235 surrounds the idler 234 and the shaft gear 232_2.

[0133] According to various embodiments of the present disclosure, the ring holding groove 232_3 can be disposed to be offset in the -x-axis of the column portion 232_1. For example, the ring holding groove 232_3 can be formed at a position spaced apart from the end of the column portion 232_1 in the -x-axis direction at a predetermined interval in the x-axis direction, to have a height lower than a periphery and surround the entire circumference of the column portion 232_1. Accordingly, the ring holding groove 232_3 can be disposed in the shape of an engraved strip of the column portion 232_1. For example, a fixing clip (e.g., 292_2) can be inserted into the ring holding groove 232_3.

[0134] In the above description, the second rotation shaft 232 is described; however, the first rotation shaft 231 can also have the same configuration and material as the second rotation shaft 232. For example, the first rotation shaft 231 can include a column portion, a shaft gear, a ring holding groove, and a plate mounting groove, and can rotate around a first axis 11 spaced apart from a second axis 12 by a predetermined distance in a direction opposite to the second rotation shaft 232.

[0135] Figure 9 FIG. is a diagram illustrating an example of a configuration of a stopper according to an embodiment of the present disclosure.

[0136] Reference Figure 9According to embodiments of the disclosure, the stopper 236 can prevent the first and second arm portions 221 and 222 from rotating beyond a designated angle, or can support a pressure when the pressure is applied within a designated angle range. The stopper 236 can include a stopper body 236_1, a first shaft insertion hole 236a into which at least a portion of the first rotation shaft 231 is inserted, and a second shaft insertion hole 236b into which at least a portion of the second rotation shaft 232 is inserted.

[0137] According to various embodiments of the disclosure, the stopper body 236_1 can be formed to protrude further in the fourth direction (e.g., -x-axis direction) than surfaces of the first and second shaft insertion holes 236a and 236b. The stopper body 236_1 can be formed to limit a rotation range of the first arm portion 221 when the first arm portion 221 rotates, and to limit a rotation range of the second arm portion 222 when the second arm portion 222 rotates.

[0138] According to various embodiments of the disclosure, the stopper 236 can include a first hole periphery 236a1 forming the first shaft insertion hole 236a, and a first stepped catch 236a2 limiting a rotation range of the first arm portion 221. The first hole periphery 236a1 can have a strip shape in which the first shaft insertion hole 236a is formed in a center portion. The first stepped catch 236a2 can be formed to protrude further in the -x-axis direction from a surface of the first hole periphery 236a1 in the -x-axis direction. The first stepped catch 236a2 can be disposed to cover, for example, a certain surface (e.g., half) of the first hole periphery 236a1. The size of the first stepped catch 236a2 formed on the first hole periphery 236a1 can vary greatly according to a rotation design range of the first arm portion 221. For example, if the rotation range of the first arm portion 221 is designed to be relatively large, a surface of the first hole periphery 236a1 on which the first stepped catch 236a2 is disposed can be designed to be small, and conversely, if the rotation range of the first arm portion 221 is designed to be relatively small, a surface of the first hole periphery 236a1 on which the first stepped catch 236a2 is disposed can be designed to be large.

[0139] According to various embodiments of the present disclosure, the stopper 236 can include a second hole periphery 236b1 forming a second shaft insertion hole 236b and a second stepped catch 236b2 limiting a rotation range of the second arm part 222. The second hole periphery 236b1 can be disposed symmetrically with the first hole periphery 236a1 in the y-axis direction with respect to an axis intersecting the x-axis and the -x-axis (or a virtual axis) of the stopper body 236_1. The second shaft insertion hole 236b, the second hole periphery 236b1, and the second stepped catch 236b2 can have the same (or similar) form as the first shaft insertion hole 236a, the first hole periphery 236a1, and the first stepped catch 236a2. The second stepped catch 236b2 can limit the rotation range of the second arm part 222.

[0140] According to various embodiments of the present disclosure, a portion of the first hole periphery 236a1 and the second hole periphery 236b1 can be disposed to protrude further in the z-axis direction than an upper surface (a surface in the z-axis direction) of the stopper body 236_1. Accordingly, the first rotation shaft 231 and the second rotation shaft 232 inserted into the first shaft insertion hole 236a and the second shaft insertion hole 236b can be disposed at least partially above the stopper body 236_1 in the z-axis direction.

[0141] Figure 10 FIG. 1 is a diagram illustrating an example of a center support according to an embodiment of the present disclosure.

[0142] Referring to Figure 3 and Figure 10 , the center support 243a according to an embodiment of the present disclosure can support the center rod 243c and can participate in z-axis movement of the center rod 243c (e.g., guide a movement range of the center rod 243c). The center support 243a can include a center body 243a3, a first support wing 243a1, and a second support wing 243a2.

[0143] According to various embodiments of the present disclosure, the center body 243a3 can have a certain thickness in the z-axis direction and can have an elongated shape in the x-axis direction, as the x-axis or -x-axis direction is formed to be relatively larger than the y-axis direction. In the center body 243a3, an upper surface (e.g., a surface in the z-axis direction) can be formed to be narrower than a lower surface (e.g., a surface in the -z-axis direction) to correspond to the adjacent elastic bodies (e.g., the third elastic body 242c and the fourth elastic body 242d) and the first cam member 241a, the edges of which can have a certain inclination angle, and the shape of which can be curved from the bottom to the top. The center body 243a3 can include a center coupling hole 243a3_1 which is opened in the z-axis direction and is coupled with a boss formed in the center rod 243c, and a housing coupling hole 243a3_2 which is opened in the same direction as the center coupling hole 243a3_1 and is coupled with a boss formed on one side of the hinge housing. The center coupling hole 243a3_1 and the housing coupling hole 243a3_2 can be disposed to be spaced apart at a predetermined distance.

[0144] According to various embodiments of the present disclosure, the first bracket wing 243a1 can be formed to protrude from the center region of the center body 243a3 in the y-axis direction. The first bracket wing 243a1 can include a first bracket wing 243a1_1 and a first bracket hole 243a1_2. The first bracket wing 243a1_1 can have a circular band shape such that the first bracket hole 243a1_2 is formed in the center portion. In the first bracket wing 243a1_1, a step can be formed around the first bracket hole 243a1_2. Some of the cam structures (e.g., the stepped dog 222_4a3) formed in the first arm portion 221 can be disposed in the step formed around the first bracket hole 243a1_2. The first bracket hole 243a1_2 can be opened in a direction perpendicular to the opening direction of the center coupling hole 243a3_1 or the housing coupling hole 243a3_2. The size of the first bracket hole 243a1_2 can be equal to or similar to the thickness of the first rotation shaft 231. Alternatively, the shape (e.g., a circular shape) of the first bracket hole 243a1_2 can be different from the shape (e.g., a closed curve including some curves and some straight lines) of the first rotation shaft 231, and the diameter of the first bracket hole 243a1_2 can be greater than the diameter of the first rotation shaft 231.

[0145] According to various embodiments of the disclosure, the second bracket wing 243a2 can be formed to protrude in a -y-axis direction from a central area of the center body 243a3, the -y-axis direction being a direction opposite to the first bracket wing 243a1. The second bracket wing 243a2 can include a second bracket wing 243a2_1 and a second bracket hole 243a2_2. The second bracket wing 243a2_1 can have a circular band shape such that the second bracket hole 243a2_2 is formed in a central portion. Similar to the first bracket wing 243a1_1, the second bracket wing 243a2_1 can have a step formed on one side (e.g., an inner periphery where the second bracket hole 243a2_2 is formed), and some of the cam structures (e.g., the stepped claws 222_4a3) formed on the second arm portion 222 can be disposed in the step. The second bracket hole 243a2_2 can be opened in the same direction as the first bracket hole 243a1_2. The second bracket hole 243a2_2 can be formed the same as the first bracket hole 243a1_2, and can be formed partially different from a z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of the second rotation shaft 232. The second rotation shaft 232 can be inserted into the second bracket hole 243a2_2, and the second rotation shaft 232 can rotate within the second bracket hole 243a2_2.

[0146] Figure 11 FIG. 1 is a diagram illustrating an example of a shaft bracket according to an embodiment of the disclosure.

[0147] Referring to Figure 3 and Figure 11 The shaft bracket 243b according to an embodiment of the disclosure can be combined with the first rotation shaft 231 and the second rotation shaft 232 for fixing the first rotation shaft 231 and the second rotation shaft 232. The shaft bracket 243b can include holes into which the first rotation shaft 231 and the second rotation shaft 232 are respectively inserted, and can be used to support an elastic body (e.g., the first elastic body 242a and the second elastic body 242b). The shaft bracket 243b can include a shaft bracket body 243b3, a first shaft wing 243b1, and a second shaft wing 243b2.

[0148] According to various embodiments of the present disclosure, the shaft support body 243b3 can have an x-axis length and a y-axis length longer than a z-axis length. For example, the overall shape of the shaft support body 243b3 can be a rectangular shape having a predetermined thickness. The side portions (e.g., y-axis edges and -y-axis edges) of the shaft support body 243b3 can have a shape in which the entire surface gradually decreases in size from a bottom surface to a top surface. Alternatively, at least some of the side portions of the shaft support body 243b3 can have a curved shape in which a cross-section (e.g., a cross-section cut in a direction from the z-axis to the -z-axis) is curved inward (e.g., in a direction from the y-axis to the -y-axis or from the -y-axis to the y-axis). One side of the first elastic body 242a and one side of the second elastic body 242b can be disposed adjacent to the side portions of the shaft support body 243b_3. One side edge (e.g., a -x-axis edge) of the shaft support body 243b3 can include protrusions 243b3_1 and 243b3_2 protruding in the -x-axis direction and disposed at a predetermined interval apart from each other in the y-axis. A locking portion protruding in the -z-axis direction from an end of the center rod 243c can be fastened to a valley 243b3_3 between the protrusions 243b3_1 and 243b3_2 spaced apart from each other. A coupling hole 243b3_4 coupled with a boss formed in the hinge housing 150 can be disposed within the shaft support body 243b3. For example, the coupling hole 243b3_4 can be disposed to be open in the z-axis direction.

[0149] According to various embodiments of the present disclosure, the first shaft wing 243b1 can extend to one side (e.g., an edge on the y-axis among edges of the -x-axis) of the shaft support body 243b3 and can have a ring shape in which a first shaft insertion hole 243b1_1 in which the first rotating shaft 231 is inserted is formed in a center portion. The first shaft insertion hole 243b1_1 can be formed in a direction perpendicular to a direction (e.g., an x-axis or -x-axis direction) in which the coupling hole 243b3_4 is open. The size of the first shaft insertion hole 243b1_1 can be similar to or greater than the circumference of the first rotating shaft 231.

[0150] According to various embodiments of the present disclosure, the second shaft wing 243b2 can be disposed symmetrically with the first shaft wing 243b1 with respect to the x-axis. For example, the second shaft wing 243b2 can extend to one side (e.g., an edge on the -y-axis among edges of the -x-axis) of the shaft support body 243b3 and can have a ring shape in which a second shaft insertion hole 243b2_1 in which the second rotating shaft 232 is inserted is formed in a center portion. The second shaft insertion hole 243b2_1 can be open in the same direction as the first shaft insertion hole 243b1_1. The size of the second shaft insertion hole 243b2_1 can be similar to or greater than the circumference of the second rotating shaft 232. The first shaft wing 243b1 and the second shaft wing 243b2 can be disposed to be parallel to each other in the y-axis.

[0151] Figure 12 This is a diagram illustrating an example of a cam component according to an embodiment of the present disclosure.

[0152] Before describing, Figure 12 The cam member shown can be at least one of a first cam member 241a disposed between the shaft support 243b and the center support 243a, or a second cam member 241b disposed between the center support 243a and the stop member 236. The following description will be based on the first cam member 241a.

[0153] refer to Figure 3 and Figure 12 The first cam component 241a may include a cam body 241a_1, a first cam 241a_1a, a second cam 241a_1b, a first cam hole 241a_2a, and a second cam hole 241a_2b. The cam body 241_1 may have a first cam 241a_1a and a second cam 241a_1b disposed at two side edges. The cam body 241a_1 may be disposed between the central body 243a3 of the central support 243a and the shaft support body 243b_3 of the shaft support 243b.

[0154] According to various embodiments of this disclosure, the first cam 241a_1a may have peaks and valleys arranged along the x-axis direction, and the first cam hole 241a_2a may be formed in the central portion to allow the first rotation shaft 231 to pass through. The first cam 241a_1a may be configured to engage with the first cam structure 221_4a of the first arm portion 221. One side of the first elastomer 242a may contact the surface of the first cam 241a_1a in the -x-axis direction.

[0155] According to various embodiments of this disclosure, the second cam 241a_1b can be disposed in the same direction as the first cam 241a_1a, and can be disposed spaced apart from the first cam 241a_1a by the y-axis length of the cam body 241_1. The second cam 241a_1b can be disposed to engage with the third cam structure 222_4a of the second arm 222, and the second elastic body 242b can contact the surface of the second cam 241a_1b in the -x-axis direction. The second cam hole 241a_2b can be formed in the central portion of the second cam 241a_1b, so that the second rotating shaft 232 can be inserted therein.

[0156] According to various embodiments of the present disclosure, when the first and second arm portions 221 and 222 are rotated within a certain angle range, the first cam member 241a can retreat in the -x-axis direction by the first and second cam structures 221_4a and 221_4b, and then, in the case of further rotation, the first cam member 241a can be disposed such that the peaks and valleys of the first and second cam structures 221_4a and 221_4b of the first and second arm portions 221 and 222 are engaged, and in the process, the first cam member 241a can move in the x-axis direction to return to its original position due to the elasticity of the first and second elastic bodies 242a and 242b.

[0157] As described above, according to various embodiments of the present disclosure, Figure 12 The cam member illustrated can be a second cam member 241b. In this case, a third cam 241b_1a of the second cam member 241b can be disposed to be engaged with the second cam structure 221_4b of the first arm portion 221, and a fourth cam 241b_1b of the second cam member 241b can be disposed to be engaged with the fourth cam structure 222_4b of the second arm portion 222, while the first cam 241a_1a of the first cam member 241a is disposed to be engaged with the first cam structure 221_4a of the first arm portion 221, and the second cam 241a_1b of the first cam member 241a is disposed to be engaged with the third cam structure 222_4a of the second arm portion 222. With respect to the cam motion of the second cam member 241b, the third and fourth elastic bodies 242c and 242d can provide elastic force to the second cam member 241b.

[0158] As described above, the cam structure according to embodiments of the present disclosure and the cam engaged with the cam structure can provide a more rigid and stronger braking feeling by being disposed such that the two cam structures formed on the first arm portion 221 and the two cam structures formed on the second arm portion 222 are simultaneously engaged with the two cam members 241a and 241b. Alternatively, the cam structure according to various embodiments of the present disclosure and the cam engaged with the cam structure can provide a more rigid and stronger braking feeling according to a stronger elastic force based on the four elastic bodies 242a, 242b, 242c, and 242d. In the process, a plurality of cam structures and cams can be provided, thereby providing improved wear resistance for the cam motion process, while providing a higher articulation force (or braking ability (or stronger braking ability)) without increasing the thickness or size.

[0159] Figure 13 FIG. 1 is a diagram illustrating an example of a support ring according to an embodiment of the present disclosure.

[0160] Referring to Figure 13According to embodiments of the disclosure, the support rings 292_1 and 292_2 can include a first support ring 292_1 coupled with the first rotation shaft 231 and a second support ring 292_2 coupled with the second rotation shaft 232.

[0161] According to various embodiments of the disclosure, the first support ring 292_1 can include a first ring hole 292_1b into which the first rotation shaft 231 is inserted, and a first ring body 292_1a forming the first ring hole 292_1b. The first ring body 292_1a can have the first ring hole 292_1b disposed at a central portion thereof, and can be disposed in an entirety in a ring shape. The first ring body 292_1a can include a first support protrusion 292_1c protruding from one side of an outer circumferential surface in a -y axis direction. The first support protrusion 292_1c can have a shape in which a width thereof becomes narrower as the first support protrusion moves away from the first ring body 292_1a (e.g., a triangular shape). At least a portion of an upper surface (a surface facing the z axis) of the first support protrusion 292_1c can be formed flat, and at least a portion of a lower cross section (e.g., a cross section cut in a direction from the z axis to the -z axis) can include a curved line. When the first arm portion 221 and the second arm portion 222 are disposed in parallel in the y axis direction, the first support protrusion 292_1c can support one side of the central rod 243c. The first ring hole 292_1b can have a cross section identical to or similar to a z axis cross section (e.g., a cross section cut in a direction from the z axis to the -z axis) of the first rotation shaft 231. For example, the first ring hole 292_1b can include a flat cross section in at least a portion of the z axis cross section (e.g., a cross section cut in a direction from the z axis to the -z axis), and a circular cross section in the remaining cross section. Alternatively, the first ring hole 292_1b can have a shape in which a flat cross section and a circular cross section are alternately disposed in the z axis cross section (e.g., a cross section cut in a direction from the z axis to the -z axis). Accordingly, when the first rotation shaft 231 rotates in one direction, the first support ring 292_1 can rotate in the same direction as the first rotation shaft 231.

[0162] According to various embodiments of the present disclosure, the second support ring 292_2 can include a second ring hole 292_2b into which the second rotation shaft 232 is inserted, and a second ring body 292_2a forming the second ring hole 292_2b. A second support protrusion 292_2c can be disposed on one side of the second ring body 292_2a. The second ring hole 292_2b can be disposed to have the same or similar shape as the first ring hole 292_1b. Alternatively, the second ring hole 292_2b can be disposed to have the same or similar shape as a z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of the second rotation shaft 232. The second ring body 292_2a can have the same or similar shape as the first ring body 292_1a. The second support protrusion 292_2c can be disposed to protrude from one side of the second ring body 292_2a in the y-axis direction. Similar to the first support protrusion 292_1c, the second support protrusion 292_2c can be disposed in a shape (e.g., a triangular shape) in which at least a portion of a cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) gradually decreases in size. In a state in which the first arm portion 221 and the second arm portion 222 are parallel to the y-axis (e.g., the display of the electronic device is in the unfolded state), a protruding tip of the second support protrusion 292_2c can be disposed to face a protruding tip of the first support protrusion 292_1c. Accordingly, when the electronic device is in the unfolded state, the second support protrusion 292_2c can support one side of the center pole 243c similar to the first support protrusion 292_1c.

[0163] Figure 14 FIG. 1 is a diagram illustrating a first state of some components of an electronic device according to an embodiment of the present disclosure.

[0164] Referring to Figures 1a to 1c , Figure 3 and Figure 14 , some components of the electronic device 100 can include the first hinge structure 200a and the display 160, and the first hinge structure 200a and the display 160 can have a first state (e.g., an unfolded state). Before describing the same, the drawing shown in Figure 14 may correspond to the shape of the second hinge structure 200b and the display 160.

[0165] According to various embodiments of the present disclosure, the first hinge structure 200a can include a first rotating part 211, a second rotating part 212, a fixed bracket 213, a first arm part 221, a second arm part 222, a first rotating shaft 231, a second rotating shaft 232, idler gears 233 and 234, a first cam member 241a, a second cam member 241b, a first elastic body 242a, a second elastic body 242b, a third elastic body 242c, a fourth elastic body 242d, a center bracket 243a, and a shaft bracket 243b. The first rotating part 211 can be connected to the first arm part 221 via a first fastening part 251. The second rotating part 212 can be connected to the second arm part 222 via a second fastening part 252.

[0166] According to various embodiments of the present disclosure, when the first rotating part 211 and the second rotating part 212 maintain the unfolded state, the display 160 can maintain the unfolded state. The first arm part 221 can rotate about the first rotating shaft 231 within a designated angle range (e.g., a range of 0 degrees to 100 degrees or 0 degrees to 95 degrees). The second arm part 222 can rotate about the second rotating shaft 232 within a designated angle range. The first rotating part 211 can rotate about a third axis 13 within the same or similar angle range as the first arm part 221. The second rotating part 212 can rotate about a fourth axis 14 within the same or similar range as the second arm part 222. The third axis 13 can be formed higher than the first rotating shaft 231 in a direction (e.g., z-axis direction) toward the display 160. The fourth axis 14 can be formed higher than the second rotating shaft 232 in a direction (e.g., z-axis direction) toward the display 160. A distance between the third axis 13 and the fourth axis 14 can be shorter than a distance between the first rotating shaft 231 and the second rotating shaft 232. According to various embodiments of the present disclosure, the third axis 13 and the fourth axis 14 can be formed side by side in a horizontal axis (e.g., y-axis). According to embodiments of the present disclosure, the third axis 13 and the fourth axis 14 can be formed on the same layer as the display 160, or above the display 160 (e.g., in air above the display 160). For example, the third axis 13 and the fourth axis 14 can be virtual axes.

[0167] According to various embodiments of the present disclosure, when the first rotating part 211 and the second rotating part 212 maintain the unfolded state, the first bracket body 211_1 of the first rotating part 211 and the second bracket body 212_1 of the second rotating part 212 can be arranged side by side. According to embodiments of the present disclosure, the upper surfaces of the first bracket body 211_1 and the second bracket body 212_1 can be arranged to face upward (e.g., the z-axis direction based on the illustrated diagram) in the same manner. According to embodiments of the present disclosure, when the first rotating part 211 and the second rotating part 212 maintain the unfolded state, the first arm part 221 and the second arm part 222 can also be arranged side by side, and thus, the first base 221_1 of the first arm part 221 and the second base 222_1 of the second arm part 222 can be arranged to face the same direction (e.g., the z-axis direction based on the illustrated diagram). Thus, the first bracket body 211_1, the second bracket body 212_1, the first base 221_1, and the second base 222_1 can all be arranged side by side based on a horizontal axis and face upward based on the illustrated diagram. The first bracket body 211_1, the second bracket body 212_1, the first base 221_1, and the second base 222_1 can support the back of the display 160 without a height difference.

[0168] According to various embodiments of the present disclosure, at the central portion of the display 160 that is bent, a predetermined gap "Gap" can be formed with the hinge structures 200a and 200b. An adhesive layer can be provided between the peripheral area (e.g., the first portion 161 or the second portion 162) other than the central portion 163 of the display 160 and the hinge structures 200a and 200b.

[0169] According to various embodiments of the present disclosure, in the first state (e.g., a state in which the display 160 is unfolded), the peak and valley of the first cam 241a_1a of the first cam member 241a can be arranged to be engaged with the valley and peak of the first cam structure 221_4a, respectively, the peak and valley of the second cam 241a_1b of the first cam member 241a can be arranged to be engaged with the valley and peak of the third cam structure 222_4a, respectively, the peak and valley of the third cam 241b_1a of the second cam member 241b can be arranged to be engaged with the valley and peak of the second cam structure 221_4b, respectively, and the peak and valley of the fourth cam 241b_1b of the second cam member 241b can be arranged to be engaged with the valley and peak of the fourth cam structure 222_4b, respectively.

[0170] Figure 15 FIG. 1 is a diagram illustrating a first angle state of a partial structure of an electronic device according to an embodiment of the present disclosure.

[0171] Reference Figures 1a to 1c , Figure 3and Figure 15 , the first hinge structure 200a (or the second hinge structure 200b) can include a first angle state (for example, a state in which the upper surfaces (surfaces in the z-axis direction) of the first rotating part 211 and the second rotating part 212 are inclined at an angle of 30 degrees with respect to the horizontal axis (y-axis)). As described above, the first hinge structure 200a can include the first rotating part 211, the second rotating part 212, the fixed bracket 213, the first arm part 221, the second arm part 222, the first cam member 241a, the second cam member 241b, the first elastic body 242a, the second elastic body 242b, the third elastic body 242c, the fourth elastic body 242d, the first rotating shaft 231, the second rotating shaft 232, the center bracket 243a, and the shaft bracket 243b. The first rotating part 211 can be connected to the first arm part 221 via the first fastening part 251. The second rotating part 212 can be connected to the second arm part 222 via the second fastening part 252.

[0172] According to various embodiments of the present disclosure, due to external pressure, the first housing (for example, the first housing 110 in FIG. Figures 1a to 1c ) to which the first rotating part 211 is fixed or the second housing (for example, the second housing 120 in FIG. Figures 1a to 1c ) to which the second rotating part 212 is fixed can be rotated at a certain angle (for example, a certain unit angle such as 5 degrees, 10 degrees, or 15 degrees) at a point on the horizontal axis (for example, the y-axis) in a direction toward the vertical axis (for example, the z-axis). For example, the first rotating part 211 connected to the first housing 110 can be rotated at a first angle (for example, 30 degrees) about the third axis 13 at a point on the horizontal axis (for example, the y-axis) in a direction toward the vertical axis (for example, the z-axis). If the first rotating part 211 is rotated at the first angle due to external pressure, the pressure can be transmitted to the first arm part 221 via the first fastening part 251. Accordingly, the first arm part 221 can be rotated at the first angle about the first rotating shaft 231 on the horizontal axis (for example, the y-axis) in a direction toward the vertical axis (for example, the z-axis). In this operation, the first cam structure 221_4a and the second cam structure 221_4b can be rotated along with the rotation operation of the first arm part 221. The first rotating shaft 231 inserted into the first cam structure 221_4a and the second cam structure 221_4b can be rotated by the force transmitted along with the rotation of the first cam structure 221_4a and the second cam structure 221_4b, and when the first rotating shaft 231 is rotated, the first shaft gear (for example, Figure 3The first idler gear 233 and the second idler gear 234, which are gear-coupled with the first axle gear, can rotate as the first axle gear rotates, and thus the second axle gear 232_2 connected to the second idler gear 234 rotates, causing rotation of the second rotation shaft 232. The third cam structure 222_4a and the fourth cam structure 242_4b can rotate as the second rotation shaft 232 rotates, the second arm portion 222 can rotate as the third cam structure 222_4a and the fourth cam structure 222_4b rotate, and the second rotation portion 212 connected via the second fastening portion 252 can rotate as the second arm portion 222 rotates. In the above description, an operation in which the second rotation portion 212 is simultaneously rotated when external pressure is applied to the first rotation portion 211 has been described; however, the present disclosure is not limited thereto. For example, if external pressure is applied to the second rotation portion 212, the second arm portion 222 connected via the second fastening portion 252 can rotate, and the second rotation shaft 232 connected to the second arm portion 222, the second idler gear 234 connected to the second rotation shaft 232, the first idler gear 233 connected to the second idler gear 234, the first rotation shaft 231 connected to the first idler gear 233, the first arm portion 221 connecting the first cam structure 221_4a and the second cam structure 221_4b to the first rotation shaft 231, and the first rotation portion 211 connected to the first arm portion 221 via the first fastening portion 251 can rotate. Alternatively, when pressure is simultaneously applied from the outside to the first rotation portion 211 and the second rotation portion 212, the first arm portion 221 and the second arm portion 222 can simultaneously rotate at a certain angle.

[0173] As described above, the first hinge structure 200a can have a structure in which the first rotation portion 211 and the second rotation portion 212 simultaneously rotate as pressure (or force) applied from the outside. Thus, even if external pressure occurs in the second housing 120 connected to the second rotation portion 212, or simultaneously occurs in the first housing 110 and the second housing 120, the first rotation portion 211 and the second rotation portion 212 can simultaneously rotate. In the electronic device 100 according to an embodiment of the present disclosure, by simultaneously rotating, torsion of the first housing 110 and the second housing 120 can be suppressed, and stable hinge operation can be performed.

[0174] According to embodiments of the present disclosure, the axes 13 and 14 of the first and second rotating parts 211 and 212 can be disposed between the first and second rotating shafts 231 and 232 of the first and second arm parts 221 and 222, and thus the amount of rotation of the first rotating part 211 and the amount of rotation of the first arm part 221 can be different for each rotation time point. Accordingly, the upper surface of the first bracket body 211_1 of the first rotating part 211 can be more rotated about a vertical axis (e.g., a z-axis) than the upper surface of the base body 221_1 of the first arm part 221. Since the first rotating part 211 and the first arm part 221 are connected via the first fastening part 251, when the first rotating part 211 rotates, the first fastening part 251 can slide along the first sliding hole 211_2 of the first rotating part 211 by a predetermined distance. Similarly, the upper surface of the second bracket body 212_1 can be more rotated about a vertical axis (e.g., a z-axis) than the second base body 222_1. Also, since the second rotating part 212 and the second arm part 222 are connected via the second fastening part 252, when the second rotating part 212 rotates, the second fastening part 252 can slide along the second sliding hole 212_2 of the second rotating part 212 by a predetermined distance.

[0175] As described above, in a state in which the display 160 of the electronic device 100 is in a folded state at a certain angle (e.g., an angle between the upper surface of the display 160 and a horizontal axis is 30 degrees or -30 degrees), as the first arm part 221 rotates, the slope close to the peak between the slopes between the peaks and the valleys of the first cam structure 221_4a can come into contact with the slope close to the peak between the slopes between the peaks and the valleys of the first cam 241a_1a of the first cam member 241a, and the slope close to the peak between the slopes between the peaks and the valleys of the second cam structure 221_4b can come into contact with the slope close to the peak between the slopes between the peaks and the valleys of the third cam 241b_1a of the second cam member 241b. Similarly, as the second arm part 222 rotates, the slope close to the peak between the slopes between the peaks and the valleys of the third cam structure 222_4a can come into contact with the slope close to the peak between the slopes between the peaks and the valleys of the second cam 241a_1b of the first cam member 241a, and the slope close to the peak between the slopes between the peaks and the valleys of the fourth cam structure 222_4b can come into contact with the slope close to the peak between the slopes between the peaks and the valleys of the fourth cam 241b_1b of the second cam member 241b.

[0176] Figure 16 FIG. 2B is a diagram illustrating a second angle state of a first hinge structure according to an embodiment of the present disclosure.

[0177] Referring to Figures 1a to 1c , Figure 3 and Figure 16The first hinge structure 200a can include a second angle state. The first hinge structure 200a, for example, can include a first rotation part 211, a second rotation part 212, a fixed bracket 213, a first arm part 221, a second arm part 222, a gear structure 230, a first cam member 241a, a second cam member 241b, a first elastic body 242a, a second elastic body 242b, a third elastic body 242c, a fourth elastic body 242d, a first rotation shaft 231, a second rotation shaft 232, a center bracket 243a, and an axle bracket 243b. The first rotation part 211 can be connected to the first arm part 221 via a first fastening part 251, and the second rotation part 212 can be connected to the second arm part 222 via a second fastening part 252.

[0178] According to various embodiments of the present disclosure, due to external pressure (or force), the first housing (for example, the first housing 110 in FIGS. Figures 1a to 1c , for example, the second housing 120 in FIGS. Figures 1a to 1c ) can be rotated by a second angle (for example, 60 degrees) in a direction toward a perpendicular axis (for example, a z-axis) at a point on a horizontal axis (for example, a y-axis). For example, when external pressure or force is transmitted to the first housing 110 or the second housing 120, the first rotation part 211 or the second rotation part 212 can be rotated by a second angle (for example, 60 degrees) in a direction toward a perpendicular axis (for example, a z-axis) at a point on a horizontal axis (for example, a y-axis) about a third axis 13 or a fourth axis 14. In the process of performing the above operation, the applied force can be transmitted to each other through the first arm part 221 or the second arm part 222, the first rotation shaft 231 and the second rotation shaft 232, and the idler gears 233 and 234, so that the first rotation part 211, the second rotation part 212, the first arm part 221, and the second arm part 222 can be simultaneously rotated.

[0179] According to various embodiments of the present disclosure, as the first rotating part 211 and the second rotating part 212 rotate at the second angle, the first fastening part 251 and the second fastening part 252 can slide in the first sliding hole 211_2 and the second sliding hole 212_2; in this case, the first fastening part 251 and the second fastening part 252 can be positioned closer to the vertical axis (e.g., the z-axis) than when they rotate at the first angle. In the course of the above-described operation, based on the illustrated drawings, the first track 211_3 of the first rotating part 211 can rotate from the center of the fixed bracket 213 in the left-outward direction, and the second track 212_3 of the second rotating part 212 can rotate from the center of the fixed bracket 213 in the right-outward direction. Since the axes around which the first rotating part 211 and the first arm part 221 rotate are different from each other, and the axes around which the second rotating part 212 and the second arm part 222 rotate are different from each other, the distance between the upper surface of the first bracket body 211_1 and the upper surface of the second bracket body 212_1 can be set to be closer to the vertical axis (e.g., the z-axis) than the distance between the upper surface of the first base 221_1 and the upper surface of the second base 222_1.

[0180] As described above, in a state in which the display 160 of the electronic device 100 is in the folded state at a certain angle (e.g., the angle between the upper surface of the display 160 and the horizontal axis is 60 degrees or -60 degrees), as the first arm part 221 rotates, at least a portion of the peak of the first cam structure 221_4a can come into contact with at least a portion of the peak of the first cam 241a_1a of the first cam member 241a, and at least a portion of the peak of the second cam structure 221_4b can come into contact with the peak of the third cam 241b_1a of the second cam member 241b. Similarly, as the second arm part 222 rotates, at least a portion of the peak of the third cam structure 222_4a can come into contact with the peak of the second cam 241a_1b of the first cam member 241a, and at least a portion of the peak of the fourth cam structure 222_4b can come into contact with the peak of the fourth cam 241b_1b of the second cam member 241b.

[0181] In the above description, in the first angle state, the slope adjacent to the peak of the cam structure is described as contacting the slope adjacent to the peak of the cam, and in the second angle state, at least a portion of the peak of the cam structure is described as contacting the peak of the cam; however, the present disclosure is not limited thereto. For example, the electronic device 100 can have more different angle states (e.g., the angle between the upper surface of one side of the display and the horizontal axis is a free stop due to the friction between the cam structure and the cam, or is variable, such as 1-degree unit, 5-degree unit, or 15 degrees, 30 degrees, 45 degrees, 60 degrees, etc.), and for each angle state, the portions of the slopes between the peak and the valley of the cam structure and the slopes between the peak and the valley of the cam that contact each other can be different. Alternatively, for each angle state, the size of the area in which the peak of the cam structure and the peak of the cam contact each other can be different.

[0182] Figure 17 FIG. 2 is a diagram illustrating a second state of some components of an electronic device according to an embodiment of the present disclosure.

[0183] Referring to Figures 1a to 1c , Figure 3 and Figure 17 , the electronic device 100 can include a first hinge structure 200a and a display 160. The second state of the first hinge structure 200a can include a folded state. The first hinge structure 200a can include, for example, a fixed bracket 213, a first rotation part 211, a second rotation part 212, a first arm part 221, a second arm part 222, a first fastening part 251, a second fastening part 252, a first rotation shaft 231, a second rotation shaft 232, a shaft gear of the first rotation shaft 231 and the second rotation shaft 232, idlers 233 and 234, a first cam member 241a, a second cam member 241b, a first elastic body 242a, a second elastic body 242b, a third elastic body 242c, a fourth elastic body 242d, a center bracket 243a, and a shaft bracket 243b.

[0184] According to an embodiment of the present disclosure, the first rotation part 211 and the second rotation part 212 can be disposed to face each other. Since the edge end portions of the first housing 110 and the second housing 120 (e.g., based on the first rotation part 211 and the second rotation part 212 being disposed to face each other), the first rotation part 211 and the second rotation part 212 can be disposed to face each other. Figure 17The ends of the first rotating portion 211 (located adjacent to each other in the z-axis direction) are arranged according to the figures shown. In the figures, the first rotating portion 211 can be arranged parallel to the vertical axis (e.g., the z-axis), or it can be arranged to rotate about the third axis 13 and further tilted by a specified angle from the vertical axis (e.g., the z-axis) toward the -y-axis direction. According to various embodiments of the present disclosure, similar to the first rotating portion 211, the second rotating portion 212 can be arranged parallel to the vertical axis (e.g., the z-axis) or rotate about the fourth axis 14, but can be further tilted by a specified angle from the vertical axis (e.g., the z-axis) toward the y-axis direction. The third axis 13 can be, for example, the rotation center axis of the first track 211_3, and the fourth axis 14 can be the rotation center axis of the second track 212_3. The first arm portion 221 can rotate about the first rotation axis 231 to be arranged parallel to the first rotating portion 211, and the second arm portion 222 can rotate about the second rotation axis 232 to be arranged parallel to the rotating portion 212. Therefore, the display 160 can be bent into a "U" shape in the central portion 163, and the remaining area of ​​the display 160 can remain flat.

[0185] According to various embodiments of this disclosure, by arranging the first rotating portion 211 and the first arm portion 221 vertically (tilted at a specified angle from the vertical axis (e.g., the z-axis) toward the -y-axis direction), the upper surface of the first support body 211_1 of the first rotating portion 211 and the upper surface of the base 221_1 of the first arm portion 221 can be arranged side by side without a height difference. Due to the length difference between the first rotating portion 211 and the first arm portion 221, the first fastening portion 251 can be positioned below the first sliding hole 211_2 of the first rotating portion 211 (e.g., relative to the first sliding hole 211_2 of the first rotating portion 211). Figure 17 (Edge in the -z axis direction). According to various embodiments of this disclosure, when the electronic device 100 is in the unfolded state, the first fastening part 251 can be positioned at the upper edge of the first sliding hole 211_2 of the first rotating part 211. Similarly, when the electronic device 100 is in the folded state, the second fastening part 252 can be positioned at the lower edge of the second sliding hole 212_2.

[0186] According to various embodiments of the disclosure, in a state in which the display 160 of the electronic device 100 is folded (e.g., a state in which the central portion of the display 160 is converted into a U shape), an arrangement can be provided in which, as the first arm portion 221 rotates, the peaks and valleys of the first cam structure 221_4a engage with the valleys and peaks of the first cam 241a_1a of the first cam member 241a, and the peaks and valleys of the second cam structure 221_4b engage with the valleys and peaks of the third cam 241b_1a of the second cam member 241b. Similarly, an arrangement can be provided in which, as the second arm portion 222 rotates, the peaks and valleys of the third cam structure 222_4a engage with the valleys and peaks of the second cam 241a_1b of the first cam member 241a, and the peaks and valleys of the fourth cam structure 222_4b engage with the valleys and peaks of the fourth cam 241b_1b of the second cam member 241b.

[0187] The electronic device 100 according to various embodiments of the disclosure disclosed above can increase the braking load of the hinge by implementing a plurality of cam structures without increasing the thickness of the hinge structure. Even if the reaction force (or repulsive force, or force to unfold the folded display) of the display 160 (or flexible display) increases, the electronic device 100 can improve the problem in the folded state or unfolded state of the terminal in a room temperature or low temperature environment (e.g., the problem in which the end portions of the housings 110 and 120 are opened in the folded state) by using the increased braking load of the hinge structure. The electronic device 100 can allow the reaction force of the display 160 to be increased by the improved braking load, thereby increasing the rigidity of the display 160 (e.g., applicable to manufacturing a thicker display 160 than before), and thus, it can be possible to reduce the occurrence of cracks or surface damage in a portion (e.g., the central portion 163 of the display 160) in which the load is concentrated due to folding in the folded state.

[0188] Figure 18 FIG. 4 is a diagram illustrating an example of another type of third hinge structure according to an embodiment of the disclosure.

[0189] Figure 19 FIG. 5 is a perspective view illustrating an example of a coupled state of a third cam member, a fifth cam structure, and a sixth cam structure according to an embodiment of the disclosure in a first direction.

[0190] Figure 20 FIG. 6 is a perspective view illustrating an example of a coupled state of a third cam member, a fifth cam structure, and a sixth cam structure according to an embodiment of the disclosure in a second direction.

[0191] Figure 21 FIG. 7 is a diagram illustrating a coupled state of a fifth cam structure and a first rotation axis and a sixth cam structure and a second rotation axis according to an embodiment of the disclosure.

[0192] Before the description, a third hinge structure can be provided instead of at least one of the first hinge structure 200a and the second hinge structure 200b described above with reference to Figure 1a . Alternatively, the third hinge structure can be additionally provided in an electronic device employing the first hinge structure 200a and the second hinge structure 200b. For example, based on Figure 1a , the third hinge structure 200c can be further provided between the first hinge structure 200a and the second hinge structure 200b.

[0193] With reference to Figures 1a to 1c , Figure 3 , Figure 18 and Figure 21 , the third hinge structure 200c according to an embodiment of the disclosure can include rotating parts 211 and 212, a fixed bracket 213, arm parts 221 and 222, a first rotating shaft 231, a second rotating shaft 232, a first cam member 241a, a second cam member 241b, a third cam member 241c, a first elastic body 242a, a second elastic body 242b, a third elastic body 242c, a fourth elastic body 242d, a fifth cam structure 221_4c, a sixth cam structure 222_4c, a center bracket 243a, and a shaft bracket 243b. In addition, the third hinge structure 200c can include a stopper 236, a rotating shaft support member 235, idlers 233 and 234, and fastening parts (e.g., 251 and 252 in Figure 3 ) connecting the arm parts 221 and 222 with the rotating parts 211 and 212, as described in Figure 3 . In addition, fixed clips can be respectively inserted into an end of the first rotating shaft 231 in the -x-axis direction and an end of the second rotating shaft 232 in the -x-axis direction to fix the shaft bracket 243b so that the first rotating shaft 231 and the second rotating shaft 232 do not deviate in the -x-axis direction.

[0194] According to various embodiments of the disclosure, the third hinge structure 200c can have the same or similar configuration as described with reference to Figure 3 , except for the fifth cam structure 221_4c, the sixth cam structure 222_4c, and the third cam member 241c. Therefore, hereinafter, the third hinge structure 200c will be described based on the third cam member 241c, the fifth cam structure 221_4c, and the sixth cam structure 222_4c.

[0195] According to various embodiments of the present disclosure, the third cam member 241c can include a cam body 241c_1, a fifth cam 241c_1a, and a sixth cam 241c_1b. The third cam member 241c can have the same shape and size as the above-described first cam member 241a or second cam member 241b except for the setting direction. The fifth cam 241c_1a and the sixth cam 241c_1b can have the same or similar structure to the first cam 241a_1a and the second cam 241a_1b shown in FIG. 21. For example, the fifth cam 241c_1a and the sixth cam 241c_1b can have a hole in the center portion into which the first rotation shaft 231 and the second rotation shaft 232 are inserted and a protruding structure including peaks and valleys in the -x axis direction. The fifth cam 241c_1a can be disposed such that its peaks and valleys are engaged with the peaks and valleys of the fifth cam structure 221_4c facing thereto. Similarly, the sixth cam 241c_1b can be disposed such that its peaks and valleys are engaged with the peaks and valleys of the sixth cam structure 222_4c facing thereto. The hole formed in the center portion of the fifth cam 241c_1a and the sixth cam 241c_1b can be disposed in a circular shape to maintain the disposed state regardless of the rotation of the first rotation shaft 231 and the second rotation shaft 232. Figure 12

[0196] ​According to various embodiments of the present disclosure, the fifth cam structure 221_4c can be disposed between the shaft support 243b and the fifth cam 241c_1a. The fifth cam structure 221_4c can include a first cam structure body 221_4c2, a third cam hole 221_4c1 formed in a central portion of the first cam structure body 221_4c2 and into which the first rotation shaft 231 is to be inserted, and a first support portion 221_4c3 disposed on one side of the first cam structure body 221_4c2. The first cam structure body 221_4c2 can have an overall annular shape of a predetermined thickness. Peaks and valleys can be continuously arranged on one surface of the first cam structure body 221_4c2 in the x-axis direction, and one surface in the -x-axis direction can at least partially include a flat surface. The size of a z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of the first cam structure body 221_4c2 can be similar to the size of a z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of the third cam 241b_1a. The third cam hole 221_4c1 can be formed to be the same as or similar to at least a portion of the z-axis cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) of the first rotation shaft 231. For example, the third cam hole 221_4c1 can include cross sections corresponding to the curved cross section and the flat cross section of the first rotation shaft 231. Accordingly, when the first rotation shaft 231 rotates, the fifth cam structure 221_4c can rotate in response to the rotation of the first rotation shaft 231. Upon rotation of the first rotation shaft 231, the fifth cam structure 221_4c can perform a braking operation based on an elastic force applied from the first elastic body 242a and the fifth cam 241c_1a in a state of engagement with the fifth cam 241c_1a. For example, the first elastic body 242a can apply an elastic force in the -x-axis direction, and the elastic force can be used to press the fifth cam 241c_1a and the fifth cam structure 221_4c in a coupled state. In this operation, if rotation of the first rotation shaft 231 occurs, the fifth cam structure 221_4c can rotate along with the rotation of the first rotation shaft 231, and can perform a braking operation when the peaks and valleys of the fifth cam structure 221_4c move to be misaligned with the peaks and valleys of the fifth cam 241c_1a. The first support portion 221_4c3 can protrude from one side of the first cam structure body 221_4c2 in the -y-axis direction, and can have a shape (e.g., a triangular or conical cross section) in which the size of the cross section (e.g., a cross section cut in a direction from the z-axis to the -z-axis) gradually decreases as the distance from the first cam structure body 221_4c2 increases. At least a portion of the upper surface of the first support portion 221_4c3 can be formed flat with respect to the z-axis. The first support portion 221_4c3 can support, for example Figure 3the center rod 243c described in the middle. If the fifth cam structure 221_4c is applied, the Figure 3 the support ring described in the middle.

[0197] According to various embodiments of the present disclosure, similar to the fifth cam structure 221_4c, the sixth cam structure 222_4c can include a second cam structure body 222_4c2, a fourth cam hole 222_4c1 into which the second rotation shaft 232 will be inserted, and a second support portion 222_4c3. The second cam structure body 222_4c2 can have the same or similar configuration as the first cam structure body 221_4c2 of the above-described fifth cam structure 221_4c, in which the fourth cam hole 222_4c1 can correspond to the third cam hole 221_4c1, and the second support portion 222_4c3 can correspond to the above-described first support portion 221_4c3. The above-described sixth cam structure 222_4c can rotate in response to the rotation of the second rotation shaft 232.

[0198] According to various embodiments of the present disclosure, the third hinge structure 200c having the above-described structure can provide a hinging force (or a braking sense) generated due to the elasticity of the first elastic body 242a at the time of rotation, such that the peaks and valleys of the fifth cam 241c_1a are engaged with or deviated from the peaks and valleys of the fifth cam structure 221_4c in response to the rotation of at least one of the first rotation part 211 and the second rotation part 212. Also, the third hinge structure 200c having the above-described structure can provide a braking sense generated due to the elasticity of the second elastic body 242b at the time of rotation, such that the peaks and valleys of the sixth cam 241c_1b are engaged with or deviated from the peaks and valleys of the sixth cam structure 222_4c in response to the rotation of at least one of the first rotation part 211 and the second rotation part 212. In addition, in a state in which the first cam structure 221_4a provided on the first arm part 221 is disposed to be engaged with the first cam 241a_1a of the first cam member 241a, the third hinge structure 200c performs a cam motion with the rotation of the first rotation shaft 231, and in a state in which the second cam structure 221_4b provided on the first arm part 221 is disposed to be engaged with the third cam 241b_1a of the second cam member 241b, the third hinge structure 200c performs a cam motion with the rotation of the first rotation shaft 231. In addition, in a state in which the third cam structure 222_4a provided on the second arm part 222 is disposed to be engaged with the second cam 241a_1b of the first cam member 241a, the third hinge structure 200c performs a cam motion with the rotation of the second rotation shaft 232, and in a state in which the fourth cam structure 222_4b provided on the second arm part 222 is disposed to be engaged with the fourth cam 241b_1b of the second cam member 241b, the third hinge structure 200c performs a cam motion with the rotation of the second rotation shaft 232. As described above, in the third hinge structure 200c according to the embodiments of the present disclosure, the plurality of (e.g., six) cams provided on the third cam member are engaged with the cam structures, thereby distributing the pressure and providing a more stable braking operation, so that it is possible to reduce the wear of the cams and the cam structures.

[0199] Figure 22 FIG. 4 is a diagram illustrating an example of a fourth hinge structure according to an embodiment of the present disclosure.

[0200] Figure 23 FIG. 5 is a diagram illustrating a fourth cam member and a fifth cam member according to an embodiment of the present disclosure in more detail. Figure 22 FIG. 6 is a diagram illustrating a fourth cam member and a fifth cam member illustrated in FIG. 5 in more detail.

[0201] Figure 24 FIG. 7 is a diagram illustrating a time point of a cam motion of a fourth cam member and a fifth cam member according to an embodiment of the present disclosure.

[0202] Referring to Figures 1a to 1c、 Figure 3 、 Figure 22 and Figure 23 According to embodiments of the present disclosure, the fourth hinge structure 200d can include a first rotation part 211, a second rotation part 212, a first arm part 221, a second arm part 222, a fourth cam member 241d, a fifth cam member 241e, a center bracket 243a, a shaft bracket 243b, a first rotation shaft 231, a second rotation shaft 232, a first elastic body 242a, a second elastic body 242b, a third elastic body 242c, and a fourth elastic body 242d. In the above structure, except for the fourth cam member 241d and the fifth cam member 241e, the remaining configurations can be the same as or similar to those described above in the first hinge structure 200a. Figure 3

[0203] According to various embodiments of the present disclosure, the fourth cam member 241d can include a cam body 241d_1, a seventh cam 241d_1a, and an eighth cam 241d_1b. For example, in the seventh cam 241d_1a, three peak portions and three valley portions can be alternately arranged with each other, and similarly, in the eighth cam 241d_1b, three peak portions and three valley portions can be alternately arranged with each other. A cam hole into which the first rotation shaft 231 is to be inserted can be formed in a central portion of the seventh cam 241d_1a, and a cam hole into which the second rotation shaft 232 is to be inserted can also be formed in a central portion of the eighth cam. The slope of the peak portion in the seventh cam 241d_1a and the eighth cam 241d_1b can form a first angle A1 with a horizontal axis (for example, a y-axis), and the height of the peak portion can be a first height H1. According to various embodiments of the present disclosure, the flat width of the valley portion (or the flat width of the peak portion) of the seventh cam 241d_1a and the eighth cam 241d_1b can be a first width B1.

[0204] ​According to various embodiments of the present disclosure, the fifth cam member 241e can include a cam body 241e_1, a ninth cam 241e_1a, and a tenth cam 241e_1b. For example, in the ninth cam 241e_1a, three peaks and three valleys can be alternately arranged with each other, and similarly, in the tenth cam 241e_1b, three peaks and three valleys can be alternately arranged with each other. A cam hole into which the first rotation shaft 231 is to be inserted can be formed in a central portion of the ninth cam 241e_1a, and a cam hole into which the second rotation shaft 232 is to be inserted can also be formed in a central portion of the tenth cam 241e_1b. The slope of the peak in the ninth cam 241e_1a and the tenth cam 241e_1b can form a second angle A2 with a horizontal axis (for example, a y-axis), and the height of the peak can be a second height H2. According to various embodiments of the present disclosure, the flat width of the valley (or the flat width of the peak) of the ninth cam 241e_1a and the tenth cam 241e_1b can be a second width B2. According to embodiments of the present disclosure, at least one of the first height H1 and the second height H2, the first angle A1 and the second angle A2, and the first width B1 and the second width B2 can be designed differently. For example, it can be designed such that the first height H1 is different from the second height H2, and the first angle A1 is the same as the second angle A2 and the first width B1 is the same as the second width B2. Or, it can be designed such that the first angle A1 (for example, 45 degrees) is different from the second angle A2 (for example, 55 degrees), and the first height H1 is the same as the second height H2 and the first width B1 is the same as the second width B2.

[0205] REFERENCE Figure 24In the fourth hinge structure 200d having the above structure, the fourth cam member 241d and the fifth cam member 241e are formed differently, and thus when the first rotating part 211 and the second rotating part 212 rotate, the time point at which the fourth cam member 241d and the cam structure reach the apex (e.g., the peak point) or the size of the contact area of the peak (e.g., the time point at which the peak of the fourth cam member 241d contacts the peak of the cam structure, or the size of the surface in which the peak of the fourth cam member 241d contacts the peak of the cam structure) can be different from the time point at which the fifth cam member 241e and the cam structure reach the apex or the size of the contact area of the peak. For example, compared to the fifth cam member 241e, the slope of the peak formed on the fourth cam member 241d can be made to contact the slope of the peak of the cam structure (e.g., the cam structure of the first arm part 221 and the second arm part 222) relatively earlier, and then the slope of the peak of the fifth cam member 241e can be made to contact the slope of the peak of the other cam structure of the first arm part 221 and the second arm part 222. If the starting point of the peak point of the fourth cam member 241d and the fifth cam member 241e is the same and the flat area of the peak of the fourth cam member 241d and the fifth cam member 241e is the same, the section forming the peak point can be the same. If the first rotating part 211 and the second rotating part 212 continue to rotate, the deviation of the peak point of the fifth cam member 241e can first begin, and then the deviation of the peak point of the fourth cam member 241d can begin.

[0206] According to various embodiments of the present disclosure, in the fourth cam member 241d, the angle A1 of the seventh cam 241d_1a and the eighth cam 241d_1b can be set to 45 degrees, and the height H1 of the seventh cam 241d_1a and the eighth cam 241d_1b can be set to 0.8 mm, and in the fifth cam member 241e, the angle A2 of the ninth cam 241e_1a and the tenth cam 241e_1b can be set to 55 degrees, and the height H2 of the ninth cam 241e_1a and the tenth cam 241e_1b can be set to 0.8 mm. Since the height H1 of the seventh cam 241d_1a and the eighth cam 241d_1b is the same as the height H2 of the ninth cam 241e_1a and the tenth cam 241e_1b, and the angle A1 of the seventh cam 241d_1a and the eighth cam 241d_1b is different from the angle A2 of the ninth cam 241e_1a and the tenth cam 241e_1b, a difference in length can occur between the planar length B1 of the seventh cam 241d_1a and the eighth cam 241d_1b and the planar length B2 of the ninth cam 241e_1a and the tenth cam 241e_1b. At the starting point of the cam operation of the electronic device 100, a difference can occur between the time points at which the cam operations of the fourth cam member 241d and the fifth cam member 241e begin, which can be caused by the difference in the planar lengths of the cams 241d_1a, 241d_1b, 241e_1a, and 241e_1b. Accordingly, the springs of the ninth cam 241e_1a and the tenth cam 241e_1b are released from the maximum compression state, and then the springs of the seventh cam 241d_1a and the eighth cam 241d_1b are released from the maximum compression state. Further, since the heights H1 and H2 at the completion points of the cam operations of the fourth cam member 241d and the fifth cam member 241e are the same, the springs of the seventh cam 241d_1a, the eighth cam 241d_1b, the ninth cam 241e_1a, and the tenth cam 241e_1b operate in the same compression state. Through the operation of this process, the articulation force (or the braking load) increases, and the load distribution at the starting point of the operation is spread, and thus a smooth operation feeling can be given.

[0207] As described above, in the fourth hinge structure 200d according to the embodiments of the present disclosure, the peak points of the cam motions occurring when the first rotating part 211 and the second rotating part 212 rotate are formed differently from each other, and thus a softer articulation force (or a braking feeling) can be provided.

[0208] Figure 25 FIG. 20 is a view illustrating an example of a fifth hinge structure according to an embodiment of the present disclosure.

[0209] Reference Figure 3 , Figure 4 and Figure 25The fifth hinge structure 200e can include rotating parts 211 and 212, a fixed bracket 213, arm parts 221 and 222, idler gears 233 and 234, a first rotating shaft 231, a second rotating shaft 232, a rotating shaft support member 235a, an integrated cam member 2500, a center bracket 243a, a shaft bracket 243b, a plurality of elastic bodies 242a, 242b, 242c, and 242d. Also, as shown in Figure 3 FIG. 17, the fifth hinge structure 200e can further include fastening parts connecting the arm parts 221 and 222 with the rotating parts 211 and 212, and a plurality of fixing clips for fixing the fastening parts with the first rotating shaft 231 and the second rotating shaft 232. In the above structure, except for the integrated cam member 2500, the remaining configurations can be the same as or similar to those described in Figure 3 and Figure 4

[0210] According to various embodiments of the present disclosure, the integrated cam member 2500 can further include a first cam 241a_1a disposed to engage with a first cam structure 221_4a formed on the first arm part 221, a second cam 241a_1b disposed to engage with a third cam structure 222_4a formed on the second arm part 222, a third cam 241b_1a disposed to engage with a second cam structure 221_4b formed on the first arm part 221, a fourth cam 241b_1b disposed to engage with a fourth cam structure 222_4b formed on the second arm part 222, and a bridge 2500a and 2500b for connecting the first cam 241a_1a, the second cam 241a_1b, the third cam 241b_1a, and the fourth cam 241b_1b. The integrated cam member 2500 can be described as a configuration in which the first cam member 241a and the second cam member 241b, which have been described above Figure 3 in FIGS. 16 and 17, and the bridge 2500a and 2500b for connecting one side of the first cam member 241a with one side of the second cam member 241b are further included. The bridge 2500a and 2500b can include a first portion 2500b for connecting one side of the first cam 241a_1a with one side of the third cam 241b_1a, and a second portion 2500a for connecting one side of the second cam 241a_1b with one side of the fourth cam 241b_1b. A hole can be formed in a central portion of the bridge 2500a and 2500b so that the center bracket 243a can be exposed to the outside. The hole formed in the center bracket 243a and the boss provided in the hinge housing 150 can be coupled through the hole formed in the central portion of the bridge 2500a and 2500b.

[0211] ​According to various embodiments of the present disclosure, the four cams 241a_1b, 241a_1a, 241b_1b, and 241b_1a are fixed by the bridges 2500a and 2500b (or the first portion 2500a and the second portion 2500b and the cam body), and the fifth hinge structure 200e having the structure as described above can be more rigidly fixed when the first rotation axis 231 and the second rotation axis 232 rotate. Accordingly, the cam structures 221_4a, 221_4b, 222_4a, and 222_4b provided on the first arm portion 221 and the second arm portion 222 can more stably perform a cam motion without deformation (deformation due to a cam motion that occurs differently for each position between the cam and the cam structure) by the more rigidly fixed one-piece cam member 2500. For example, the electronic device 100 described above can increase a braking load by increasing only the spring without increasing the number of cam assemblies, which makes it possible to reduce the number of components, reduce management items related to the cam, and reduce the cost of components related to the cam.

[0212] Figure 26 FIG. 17 is a diagram illustrating an example of a sixth hinge structure according to an embodiment of the present disclosure.

[0213] Referring to Figure 25 and Figure 26 , the sixth hinge structure 200f can include the rotation portions 211 and 212, the fixing bracket 213, the arm portions 221 and 222, the first rotation axis 2310, the second rotation axis 2320, the rotation axis support member 235b, the one-piece cam member 2500, the center bracket 243a, the shaft bracket 243b, and the plurality of elastic bodies 242a, 242b, 242c, and 242d. Further, as shown in Figure 25 , the sixth hinge structure 200f can further include fastening portions connecting the arm portions 221 and 222 with the rotation portions 211 and 212, and a plurality of fixing clips for fixing the fastening portions with the first rotation axis 2310 and the second rotation axis 2320. The sixth hinge structure 200f can have the same or similar shape as the fifth hinge structure 200e of Figure 25 , except for the gear structure. For example, in the sixth hinge structure 200f, the idler gears 233 and 234 and the shaft gears that have been provided on the fifth hinge structure 200e can be removed. According to various embodiments of the present disclosure, in the sixth hinge structure 200f, the first rotation axis 2310 and the second rotation axis 2320 can have a shape in which the shaft gears 232_2 described in Figure 8 are removed. The rotation axis support member 235b can be used to support the first rotation axis 2310 and the second rotation axis 2320 from deviating from the fixing bracket 213.

[0214] According to various embodiments of the present disclosure, even if a separate gear structure (e.g., a pinion and a gear unit provided on a rotating shaft) is not employed, the sixth hinge structure 200f having the structure as described above can provide a stable folded state or unfolded state of the electronic device 100. For example, in the sixth hinge structure 200f based on the integrated cam member 2500, even if the first rotating part 211 and the first arm part 221 and the second rotating part 212 and the second arm part 222 are rotated, respectively, deformation (e.g., deformation between the first rotating part 211 and the first arm part 221 and between the second rotating part 212 and the second arm part 222) does not occur, which makes it possible to stably provide a folded state, an unfolded state at a designated angle, and an unfolded state. When the cam moves in contact with the arm part to rotate, it moves all the cams backward, and the cam in contact with the fixed arm also moves backward accordingly without deformation.

[0215] Figure 27a FIG. 22 is a diagram illustrating another example of a cam shape according to an embodiment of the present disclosure.

[0216] Figure 27b FIG. 23 is a diagram illustrating an example of a contact state of some peaks of a cam and a cam structure according to an embodiment of the present disclosure.

[0217] Before being described, the cam 2400a according to an embodiment of the present disclosure can be applied to at least one of the cams or cam structures described with reference to Figures 2 to 26 FIGS. 1 to 21.

[0218] Referring to Figure 27a , the cam 2400a (or cam structure) according to an embodiment of the present disclosure can include a cam support part B0, a plurality of peaks M1, M2, and M3, and a plurality of valleys V1 and V2. In the illustrated diagram, the cam 2400a including three peaks M1, M2, and M3 and three valleys V1 and V2 (a valley covered by the first peak M1 is not shown) is presented; however, the present disclosure is not limited thereto. For example, the cam 2400a can have a structure including two or more peaks and valleys. All of the plurality of peaks M1, M2, and M3 can have the same structure. Alternatively, at least one of the plurality of peaks M1, M2, and M3 can have a different shape from the other peaks. For example, as illustrated, at least one peak can have a structure in which a second portion P2 corresponding to a center of the peak has a certain inclination angle (an inclination angle greater than 0 degrees, for example, about 5 degrees), and at least one remaining peak can have a structure in which a central portion of the peak is flat.

[0219] According to embodiments of the disclosure, as shown in the drawings, at least one of the plurality of peaks M1, M2, and M3, for example, the first peak M1, can include a first portion P1 having a first inclination angle as1, a second portion P2 having a second inclination angle as2, and a third portion P3 having a third inclination angle as3. One side (for example, the end of the -y axis) of the first portion P1 can be disposed to be connected to one side (for example, the end of the y axis) of the first valley V1, and the other side (for example, the end of the y axis) of the first portion P1 can be disposed to be connected to one side (for example, the end of the -y axis) of the second portion P2. The first portion P1 can be a ridge having the first inclination angle as1 with respect to the y axis. The first inclination angle as1 can include an acute angle of less than 90 degrees in the direction from the -y axis to the y axis with respect to the x axis.

[0220] One side (for example, the end of the -y axis) of the second portion P2 can be disposed to be connected to the other side (for example, the end of the y axis) of the first portion P1, and the other side (for example, the end of the y axis) of the second portion P2 can be disposed to be connected to one side (for example, the end of the -y axis) of the third portion P3. The second portion P2 can be disposed to protrude further along the x axis than the first portion P1 and the third portion P3. A boundary region between the first portion P1 and the second portion P2 can be rounded with a designated first curvature R1. The second portion P2 can have the second inclination angle as2 with respect to the y axis. The second inclination angle as2 can include an acute angle of less than 90 degrees in the direction from the -y axis to the y axis with respect to the x axis, and an absolute value of the second inclination angle as2 can be less than an absolute value of the first inclination angle as1.

[0221] One side (for example, the end of the -y axis) of the third portion P3 can be disposed to be connected to the other side (for example, the end of the y axis) of the second portion P2, and the other side (for example, the end of the y axis) of the third portion P3 can be disposed to be connected to one side (for example, the end of the -y axis) of the second valley V2. The third portion P3 can be formed to have a predetermined inclination angle inclined toward the y axis in the second portion P2. A boundary region between the second portion P2 and the third portion P3 can be rounded with a designated second curvature R2. The second curvature R2 can have a value less than the first curvature R1 (for example, the first curvature R1 is smoother than the second curvature R2). The third portion P3 can have the third inclination angle as3 with respect to the -y axis. The third inclination angle as3 can include an acute angle of less than 90 degrees in the direction from the y axis to the -y axis with respect to the x axis, and an absolute value of the third inclination angle as3 can be greater than an absolute value of the second inclination angle as2. According to various embodiments of the disclosure, the absolute value of the third inclination angle as3 can be equal to or greater than the absolute value of the first inclination angle as1.

[0222] Reference Figure 27b , Figure 27aThe cam shape described in Figures 2 to 26 above can be applied to at least one cam or at least one cam structure described in For example, in the illustrated drawings, the protrusion of the cam 2400a can be disposed to protrude in the direction from the x-axis to the -x-axis, and the protrusion of the cam structure 2400b can be disposed to protrude in the direction from the -x-axis to the x-axis. Alternatively, the uneven portion of the cam 2400a and the uneven portion of the cam structure 2400b can be disposed to face each other. At least a portion of the second portion 2400a_P2 of the cam 2400a and at least a portion of the second portion 2400b_P2 of the cam structure 2400b can contact each other as illustrated in the drawings during the free stop section (a section maintained within a specified angle range by friction between the cam 2400a and the cam structure 2400b) of the electronic device (for example, the electronic device 100 of Figure 2 FIG. 1). According to an embodiment of the disclosure, when the electronic device has the free stop state described in Figure 15 or Figure 16 , the display (the display 160 of Figure 1a or Figure 2 ) can exert a repulsive force to restore the electronic device to the unfolded state (the state of Figure 14 FIG. 1).

[0223] According to an embodiment of the disclosure, the cam 2400a can be pushed in the y-axis direction by the restoring force of the display (for example, the repulsive force of the display acts in the counterclockwise direction), and the cam structure 2400b can be pushed in the -y-axis direction by the restoring force of the display (for example, the repulsive force of the display acts in the clockwise direction). In this process, since the second portion 2400a_P2 of the cam 2400a and the second portion 2400b_P2 of the cam structure 2400b contact each other at the second inclination angle as2 as described above, the cam 2400a and the cam structure 2400b according to the disclosure at least partially cancel the repulsive force (or the restoring force) generated in the unfolding direction of the display, which makes it possible to suppress the pushing (for example, the angle between the first housing (for example, the first housing 110 in Figures 1a to 1c or Figure 2 ) and the second housing (for example, the second housing 120 in Figures 1a to 1c or Figure 2 ) is changed) that can occur regardless of the user's intention in the free stop state. According to various embodiments of the disclosure, as illustrated in Figure 15 or Figure 16 , the electronic device can have a holding state (or a free stop state) at a certain angle. In this case, in the electronic device, the cam 2400a and the cam structure 2400b can be arranged to engage with each other as illustrated in the drawings, which makes it possible to suppress the pushing (for example, the angle between the first housing (for example, the first housing 110 in Figure 14The force in the expanded state shown, for example, a display repulsive force or a restoring force. In Figure 27b In the middle, both the cam 2400a and the cam structure 2400b are shown as having a structure in which the top of the peak has a second inclination angle as2; however, the present disclosure is not limited thereto. For example, a second portion P2 having the second inclination angle as2 can be formed only on the cam 2400a or the cam structure 2400b.

[0224] Regarding the rotation in the expansion direction, in the middle, the cam 2400a is described based on the direction in which the cam 2400a rotates from the -y axis (or the left side) to the y axis (or the right side); however, the present disclosure is not limited thereto. For example, according to the design style of the electronic device, the direction in which the cam 2400a rotates in the direction from the y axis to the -y axis can be the operation direction of the display from the folded state to the expanded state. Figure 27b

[0225] ​According to various embodiments of the present disclosure, an electronic device (or a portable electronic device, a portable communication device, a foldable electronic device, a foldable electronic device having a communication function, etc.) can include a housing including a first housing 110 and a second housing 120, a hinge structure 200a and 200b accommodated in the housing and connected to the first housing and the second housing, and a flexible display 160 disposed on the first housing, the hinge structure (or a hinge portion, a hinge unit, a hinge module, a hinge device, etc.), and the second housing. The hinge structure 200a can include a first rotation shaft 231 rotating about a first axis 11, a second rotation shaft 232 rotating about a second axis 12, a first arm portion 221 including a first cam structure 221_4a and a second cam structure 221_4b connected to the first rotation shaft, a second arm portion 222 including a third cam structure 222_4a and a fourth cam structure 222_4b connected to the second rotation shaft, a first rotation portion 211 connected to the first arm portion and rotating about a third axis 13, a second rotation portion 212 connected to the second arm portion and rotating about a fourth axis 14, a first cam member 241a including a first cam 241a_1a engaged with the first cam structure and a second cam 241a_1b engaged with the third cam structure, a second cam member 241b including a third cam 241b_1a engaged with the second cam structure and a fourth cam 241b_1b engaged with the fourth cam structure, a first elastic body 242a connected to the first rotation shaft to provide an elastic force to the first cam, a second elastic body 242b connected to the second rotation shaft to provide an elastic force to the second cam, a third elastic body 242c connected to the first rotation shaft to provide an elastic force to the third cam, and a fourth elastic body 242d connected to the second rotation shaft to provide an elastic force to the fourth cam.

[0226] According to various embodiments of the present disclosure, the electronic device can further include a first fastening portion 251 to fasten a first sliding hole 211_2 formed in the first rotation portion with the first arm portion and a second fastening portion 252 to fasten a second sliding hole 212_2 formed in the second rotation portion with the second arm portion, and the first fastening portion can be slidably moved within the first sliding hole in response to rotation of the first arm portion, and the second fastening portion can be slidably moved within the second sliding hole in response to rotation of the second arm portion.

[0227] According to various embodiments of the present disclosure, a third elastic body can be disposed between the first cam structure and the second cam structure, a fourth elastic body can be disposed between the third cam structure and the fourth cam structure, the first elastic body, the first cam, the first cam structure, the third elastic body, the third cam, and the second cam structure can be placed on the first rotation shaft in this order, and the second elastic body, the second cam, the third cam structure, the fourth elastic body, the fourth cam, and the fourth cam structure can be placed on the second rotation shaft in this order.

[0228] According to various embodiments of the present disclosure, the cross-sections of the holes of the first cam, the second cam, the third cam, and the fourth cam can be formed in a circular shape, and the cross-sections of the holes of the first cam structure, the second cam structure, the third cam structure, and the fourth cam structure can at least partially have a flat cross-section.

[0229] According to various embodiments of the present disclosure, the electronic device can further include at least one of a shaft support placed on the first rotation shaft and the second rotation shaft and supporting the first elastic body and the second elastic body, and a center pole disposed between the hinge structure and the display and supporting the display while moving up and down in the hinge structure in a direction facing or opposite to the display as the hinge structure operates.

[0230] According to various embodiments of the present disclosure, the interval distance between the first axis and the second axis can be shorter than the interval distance between the third axis and the fourth axis.

[0231] According to various embodiments of the present disclosure, the third axis and the fourth axis can be located below the first axis and the second axis in an upward direction of the display in the hinge structure.

[0232] According to various embodiments of the present disclosure, the first rotation part can include a first rail rotating along the third axis, the second rotation part can include a second rail rotating along the fourth axis, and the electronic device can further include at least one of a fixing support having a first guide groove corresponding to the first rail and a second guide groove corresponding to the second rail, and a support cover covering one surface of the fixing support.

[0233] According to various embodiments of the present disclosure, the electronic device can further include a fifth cam structure 221-4c fastened on the first rotation shaft, a sixth cam structure 222-4c fastened on the second rotation shaft, and a third cam member 241c including a fifth cam 241c_1a engaged with the fifth cam structure and receiving an elastic force generated by the first elastic body and a sixth cam 241c_b1 engaged with the sixth cam structure and receiving an elastic force generated by the second elastic body.

[0234] According to various embodiments of the present disclosure, the fifth cam structure and the sixth cam structure can be separate and fastened to the first rotation shaft and the second rotation shaft, respectively.

[0235] According to various embodiments of the present disclosure, at least a portion of a cross section of the hole of the fifth cam structure and at least a portion of a cross section of the hole of the sixth cam structure can include a flat cross section.

[0236] According to various embodiments of the present disclosure, the fifth cam structure and the sixth cam structure can rotate as the first arm portion and the second arm portion rotate.

[0237] According to various embodiments of the present disclosure, the first elastic body can be disposed between the fifth cam structure and the first cam structure, and the second elastic body can be disposed between the sixth cam structure and the third cam structure.

[0238] According to various embodiments of the present disclosure, a first angle of the peak formed on the first cam and a second angle of the peak formed on the third cam can be different from each other.

[0239] According to various embodiments of the present disclosure, an angle of the peak formed on the first cam can be the same as an angle of the peak formed on the second cam, and an angle of the peak formed on the third cam can be the same as an angle of the peak formed on the fourth cam.

[0240] According to various embodiments of the present disclosure, a first width of the valley formed on the first cam and a second width of the valley formed on the third cam can be different from each other, or a first height of the peak formed on the first cam and a second height of the peak formed on the third cam can be different from each other.

[0241] According to various embodiments of the present disclosure, the electronic device can further include a bridge connecting the first cam member with the second cam member.

[0242] According to various embodiments of the present disclosure, the bridge can include a first portion connecting the first cam with the third cam and a second portion connecting the second cam with the fourth cam.

[0243] According to various embodiments of the present disclosure, a hinge structure for a foldable electronic device can include a first rotation part 211 connected to a first housing of a foldable electronic device and rotating within a predetermined angle range, a second rotation part 212 connected to a second housing of the foldable electronic device and rotating along with the rotation of the first rotation part, a first arm part 221 connected to the first rotation part and including a first cam structure 221_4a and a second cam structure 221_4b spaced apart from each other by a predetermined interval, a second arm part 222 connected to the second rotation part and including a third cam structure 222_4a and a fourth cam structure 222_4b spaced apart from each other by a predetermined interval, a first rotation shaft 231 rotating about a first axis 11 and at least a portion of which being inserted into the first cam structure and the second cam structure, a second rotation shaft 232 rotating about a second axis 12 and at least a portion of which being inserted into the third cam structure and the fourth cam structure, a first cam member 241a placed on the first rotation shaft and including a first cam 241a_1a engaged with the first cam structure and a second cam 241a_1b engaged with the third cam structure, a second cam member 241b placed on the second rotation shaft and including a third cam 241b_1a engaged with the second cam structure and a fourth cam 241b_1b engaged with the fourth cam structure, a first elastic body 242a connected to the first rotation shaft to provide an elastic force to the first cam, a second elastic body 242b connected to the second rotation shaft to provide an elastic force to the second cam, a third elastic body 242c connected to the first rotation shaft to provide an elastic force to the third cam, and a fourth elastic body 242d connected to the second rotation shaft to provide an elastic force to the fourth cam, wherein the first rotation part can rotate about a third axis 13 and the second rotation part can rotate about a fourth axis 14.

[0244] According to various embodiments of the present disclosure, an arm body for an arm structure of a foldable electronic device can include a first cam provided on one side of the arm body and including a first hole into which at least a portion of a rotation shaft for a folding operation of the foldable electronic device is inserted, a peak and a valley formed around the first hole, a second cam arranged side by side on the same axis as the one side of the arm body, spaced apart from the first cam, and including a second hole into which at least a portion of the rotation shaft is inserted, a peak and a valley formed around the second hole, and a connection part provided on the other side of the arm body and fastened with a rotation part for rotating the foldable electronic device.

[0245] According to various embodiments of the present disclosure, at least one of the first cam or the second cam can include at least one peak and a valley, and the peak can include a first portion having a first inclination angle, a second portion having a second inclination angle different from the first inclination angle and greater than 0 degrees, and a third portion having a third inclination angle.

[0246] According to various embodiments of the present disclosure, an absolute value of the first inclination angle of the first portion can be greater than an absolute value of the second inclination angle of the second portion.

[0247] According to various embodiments of the present disclosure, a first curvature of a boundary region between the first portion and the second portion can be less than a second curvature of a boundary region between the second portion and the third portion.

[0248] According to various embodiments of the present disclosure, an absolute value of the third inclination angle can be equal to or greater than an absolute value of the first inclination angle.

[0249] According to various embodiments of the present disclosure, in the arm structure, a height of the peak and a flat width of the peak are based on the first inclination angle, the second inclination angle, and the third inclination angle.

[0250] According to various embodiments of the present disclosure, in the arm structure, the height of the peak, the flat width of the peak, the first inclination angle, the second inclination angle, and the third inclination angle are configured to provide a folding resistance load of the foldable electronic device.

[0251] Each component (e.g., a module or a program) according to various embodiments can consist of one or a plurality of entities, and some of the aforementioned sub-components can be omitted, or other sub-components can be further included in various embodiments. As another option or in addition, some components (e.g., a module or a program) can be integrated into one entity which performs the same or similar functions performed by the corresponding components before integration. The operations performed by a module, a program, or another component according to various embodiments can be executed sequentially, in parallel, repeatedly, or heuristically, at least some operations can be executed in different orders, omitted, or other operations can be added.

[0252] With the arm structure, the hinge structure, and the electronic device including the hinge structure according to various embodiments of the present disclosure, by providing a specified size of a folding resistance load without increasing the size (e.g., thickness) of the electronic device or while suppressing an increase in the size (e.g., thickness), it is possible to support the foldable electronic device so that it more rigidly maintains a folded state or performs a folding operation.

[0253] Further, with the arm structure, the hinge structure, and the electronic device including the same according to various embodiments of the disclosure, by using an increased braking load against a repulsive force of a display in a folded state, even if the rigidity, the reaction force, or the thickness of the display is increased, the folded state of the electronic device can be stably supported. Accordingly, with the hinge structure and the electronic device according to various embodiments of the disclosure, an opportunity to apply a display having a strong resistance to a dent or a wrinkle caused by external pressure or impact to an electronic device can be provided.

[0254] Further, with the arm structure, the hinge structure, and the electronic device including the same according to various embodiments of the disclosure, an opportunity to apply a flexible display of various materials or various shapes to a foldable electronic device in the case where a braking load is increased can be provided.

[0255] Although the disclosure has been shown and described with respect to various embodiments of the disclosure, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents.

Claims

1. A foldable electronic device, the foldable electronic device comprising: A housing, the housing comprising a first housing portion and a second housing portion; A hinge structure connecting the first housing portion and the second housing portion, wherein the hinge structure includes: A first rotation axis, the first rotation axis being configured to rotate about a first axis; A second rotation axis, configured to rotate about a second axis; A first cam structure is connected to the first rotating shaft; A third cam structure is connected to the second rotating shaft; A first cam, which engages with a first cam structure; A second cam, which engages with the third cam structure; and A flexible display, wherein the flexible display is disposed on the first housing portion, the hinge structure, and the second housing portion. The flexible display is configured to exert a restoring force from the folded state to the unfolded state when the housing is in at least a partially folded state. Wherein, as the restoring force is applied to the hinge structure, the first cam structure is configured to rotate in a first direction, and the third cam structure is configured to rotate in a second direction, which is opposite to the first direction. Wherein, the central portions of the peaks of the first cam structure and the second cam are inclined, such that their second side facing the second direction is higher than their first side facing the first direction, and The third cam structure and the center portion of the peak of the first cam are inclined such that the second side of the third cam facing the second direction is lower than the first side of the third cam facing the first direction.

2. The foldable electronic device according to claim 1, further comprising: A first arm, comprising a first cam structure and a second cam structure, wherein the second cam structure is connected to the first rotating shaft and is positioned parallel to the first cam structure; The second arm includes the third cam structure and the fourth cam structure, the fourth cam structure being connected to the second rotating shaft and positioned parallel to the third cam structure; A third cam, which engages with the structure of the second cam; as well as The fourth cam engages with the fourth cam structure.

3. The foldable electronic device according to claim 2, wherein, As the restoring force is applied to the hinge structure, the second cam structure is configured to rotate in the first direction, and the fourth cam structure is configured to rotate in the second direction.

4. The foldable electronic device according to claim 3, in, The center portions of the peaks of the second cam structure and the fourth cam are inclined such that their second side facing the second direction is higher than their first side facing the first direction, and The central portion of the peak of the fourth cam structure and the third cam is inclined such that the second side of the cam facing the second direction is lower than the first side of the cam facing the first direction.

5. The foldable electronic device according to claim 1, further comprising: A cam component, the cam component comprising a first cam in a first region corresponding to the first rotation axis and a second cam in a second region corresponding to the second rotation axis.

6. The foldable electronic device according to claim 5, wherein, The cam component further includes: A cam body that connects the first cam and the second cam.

7. The foldable electronic device according to claim 1, further comprising: A first arm portion, wherein the first cam structure is disposed in the first arm portion, and a portion of the first rotating portion is connected to the first arm portion; as well as The second arm portion, wherein the third cam structure is disposed in the second arm portion, and a portion of the second rotating portion is connected to the second arm portion.

8. The foldable electronic device according to claim 7, in, The first rotating part is configured to rotate about a third axis, and The second rotating part is configured to rotate about a fourth axis.

9. The foldable electronic device according to claim 8, wherein, The distance between the third axis and the fourth axis is less than the distance between the first axis and the second axis.

10. The foldable electronic device of claim 8, further comprising: The first fastening part fastens the first arm to the first rotating part; as well as The second fastening part secures the second arm to the second rotating part. The first rotating part is connected to the first housing portion. The second rotating part is connected to the second housing portion, and When the first housing portion and the second housing portion are unfolded from the folded state or folded from the unfolded state, the first fastening portion is configured to slide along a hole formed on one side of the first rotating portion, and the second fastening portion is configured to slide along a hole formed on one side of the second rotating portion.

11. A foldable electronic device, the foldable electronic device comprising: A housing, the housing comprising a first housing portion and a second housing portion; A hinge structure connecting the first housing portion and the second housing portion, wherein the hinge structure includes: A first rotation axis, the first rotation axis being configured to rotate about a first axis; A first cam structure is connected to the first rotating shaft; A first cam, the first cam engaging with a first cam structure; and A flexible display, wherein the flexible display is disposed on the first housing portion, the hinge structure, and the second housing portion. Wherein, when the housing is in at least a partially folded state, the flexible display has at least a partial restoring force from the folded state to the unfolded state. The first cam structure is configured to rotate in a first direction as the restoring force is applied to the hinge structure. In this configuration, the central portion of the peak of the first cam structure is inclined such that its second side facing the second direction is higher than its first side facing the first direction, and the second direction is opposite to the first direction. The central portion of the peak of the first cam is inclined such that its second side facing the second direction is lower than its first side facing the first direction.

12. The foldable electronic device of claim 11, further comprising: An arm portion, the arm portion including a first cam structure and a second cam structure, the second cam structure being connected to the first rotating shaft and positioned parallel to the first cam structure; as well as The third cam engages with the second cam structure.

13. The foldable electronic device according to claim 12, wherein, The second cam structure is configured to rotate in the first direction as the restoring force is applied to the hinge structure.

14. The foldable electronic device according to claim 13, in, The center portion of the peak of the second cam structure is inclined such that its second side facing the second direction is higher than its first side facing the first direction, and The central portion of the peak of the third cam is inclined such that its second side facing the second direction is lower than its first side facing the first direction.

15. The foldable electronic device according to claim 11, wherein, The peak of the first cam structure includes: The first part is connected to one end of the valley portion of the first cam structure and has a first tilt angle relative to the second direction; The second part, connected to the first part, has a second tilt angle relative to the second direction and corresponds to the center portion of the peak of the first cam structure; and The third part is connected to the second part and has a third tilt angle relative to the first direction.

16. The foldable electronic device according to claim 15, wherein, The absolute value of the second tilt angle is less than the absolute value of the first tilt angle, and the absolute value of the second tilt angle is less than the absolute value of the third tilt angle.

17. The foldable electronic device according to claim 15, wherein, The absolute value of the third tilt angle is equal to or greater than the absolute value of the first tilt angle.

18. The foldable electronic device according to claim 15, in, The peak of the first cam includes: The fourth part is connected to one end of the valley of the first cam and has a fourth tilt angle relative to the first direction; The fifth part, connected to the fourth part, has a fifth tilt angle relative to the first direction and corresponds to the center portion of the peak of the first cam; and The sixth part, connected to the fifth part and having a sixth tilt angle relative to the second direction, Wherein, the absolute value of the fifth tilt angle is less than the absolute value of the fourth tilt angle, and The absolute value of the fifth tilt angle is less than the absolute value of the sixth tilt angle.

19. The foldable electronic device according to claim 18, wherein, The absolute value of the sixth tilt angle is equal to or greater than the absolute value of the fourth tilt angle.

20. The foldable electronic device of claim 11, further comprising: A second rotation axis is configured to rotate about a second axis in response to the rotation of the second housing portion; A third cam structure is connected to the second rotating shaft; The second cam engages with the third cam structure; A first elastic body exhibits an elastic force that causes the first cam structure and the first cam to contact each other; as well as The second elastic body exhibits an elastic force that causes the third cam structure and the second cam to contact each other. The third cam structure is configured to rotate in the second direction as the restoring force is applied to the hinge structure. The center portion of the peak of the second cam is inclined such that its second side facing the second direction is higher than its first side facing the first direction. The central portion of the peak of the third cam structure is inclined such that its second side facing the second direction is lower than its first side facing the first direction.

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