KR20220061789A - Electronic device including flexible display - Google Patents

Abstract

In accordance with one embodiment of the present invention, an electronic device includes: a housing; a flexible display at least partially took off from an internal space of the housing; and a rotary module for moving the flexible display. The rotary module includes: a shaft including one end and the other end combined with a support member included in the electronic device; a cylindrical housing operatively connected with the flexible display, and rotatable around the shaft; one pair of cylindrical cams penetrated by the shaft to be housed in the cylindrical housing, linearly movable on the shaft, and located to be symmetrical to each other with respect to the center of the shaft; one pair of guide pins combined with the cylindrical housing, formed on a cylindrical surface of each of the pair of cylindrical cams, and matched with one pair of guide grooves, which are symmetrical to each other with respect to the center of the shaft, respectively; and one pair of springs housed in the cylindrical housing, elastically supporting each of the pair of cylindrical cams, and symmetrical to each other with respect to the center of the shaft. Various other embodiments can be possible. Therefore, the present invention is capable of securing the reliability or competitiveness of the electronic device.

Description

Electronic device including a flexible display {ELECTRONIC DEVICE INCLUDING FLEXIBLE DISPLAY}

Various embodiments of the present disclosure relate to an electronic device including a flexible display.

An electronic device including a flexible display may be implemented with a screen expandable while having portability.

At least a portion of the flexible display may be disposed in an internal space of the electronic device in a bent or rolled state. When at least a portion of the flexible display is withdrawn from the internal space of the electronic device, the screen may be expanded. A driving device for smoothly withdrawing at least a portion of the flexible display disposed in the internal space of the electronic device in a bent or rolled state to the outside of the electronic device may be required.

Various embodiments of the present disclosure may provide an electronic device including a flexible display including a driving device supporting movement of the flexible display.

The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

According to an embodiment of the present invention, an electronic device includes a housing, a flexible display that is at least partially withdrawable from an internal space of the housing, and a rotation module for moving the flexible display, wherein the rotation module includes the electronic device A shaft including one end and the other end coupled to a support member included in a shaft, a cylindrical housing drivenly connected to the flexible display and capable of rotational movement around the shaft, and penetrated by the shaft to the cylindrical housing A pair of cylindrical cams accommodated, capable of linear motion on the shaft, symmetrical to each other with respect to the center of the shaft, coupled to the cylindrical housing, and formed on a cylindrical surface of each of the pair of cylindrical cams, , a pair of guide pins corresponding to each of a pair of guide grooves symmetrical with respect to the center of the shaft, and accommodated in the cylindrical housing, elastically supporting each of the pair of cylindrical cams, It may include a pair of springs symmetrical to each other with respect to the center.

An electronic device including a flexible display according to various embodiments of the present disclosure includes a rotation module that supports movement of the flexible display without an electric driving device such as a motor, thereby improving space efficiency and contributing to the simplification of the screen expansion structure. can The rotation module is not limited to moving the flexible display and may control the moving speed, so that reliability or competitiveness of an electronic device capable of expanding a screen may be secured.

In addition, effects obtainable or predicted by various embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. For example, various effects predicted according to various embodiments of the present invention will be disclosed in the detailed description to be described later.

1 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure;
2 shows a rotation module according to an embodiment.
3 and 4 are exploded views of a rotation module according to an embodiment.
5 shows a first state of the rotation module according to an embodiment.
6 shows a second state of the rotation module according to an embodiment.
7 is an exploded plan view of the first guide groove and the second guide groove according to an embodiment.
8 is an exploded plan view of the first guide groove and the second guide groove according to another embodiment.
9 is an exploded plan view of the first guide groove and the second guide groove according to another embodiment.
10 is an exploded plan view of the first guide groove and the second guide groove according to various embodiments of the present disclosure;
11 is a perspective view of an electronic device in a closed state according to an exemplary embodiment.
12 is a perspective view of an electronic device in an open state according to an exemplary embodiment.
13 is an exploded view of the electronic device of FIG. 11 according to an embodiment.
FIG. 14 illustrates a cross-sectional structure of a part of an electronic device along line AA′ or line BB′ in FIG. 11 according to an embodiment.
FIG. 15 illustrates a cross-sectional structure of a part of an electronic device for line CC′ or line DD′ in FIG. 12 according to an embodiment.
16A and 16B illustrate a first state of a rotation module when an electronic device is in a closed state according to an exemplary embodiment.
17 illustrates a second state of the rotation module when the electronic device is in an open state according to an exemplary embodiment;
18 illustrates a first state of a rotation module when an electronic device is in a closed state according to various embodiments of the present disclosure;
19A or 19B illustrates a third state of a rotation module when an electronic device is in an intermediate state according to an exemplary embodiment.
20 is a plan view of an electronic device according to an exemplary embodiment.
21A, 21B, 22A, and 22B are perspective views of an electronic device according to an exemplary embodiment.
23 illustrates a schematic cross-sectional structure of an electronic device in a screen-reduced state illustrated in FIGS. 21A or 21B , according to an exemplary embodiment.
24 illustrates a schematic cross-sectional structure of an electronic device in a screen expanded state illustrated in FIGS. 22A or 22B according to an exemplary embodiment.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments.

Referring to FIG. 1 , in a network environment 100 , the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 may be included. In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, the program 140 ) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 uses less power than the main processor 121 or is set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, image signal processor or communication processor) may be implemented as part of another functionally related component (eg, camera module 180 or communication module 190). there is. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but the above-described example is not limited to The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks, or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ). The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . Sound may be output through the electronic device 102 (eg, a speaker or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that may be used for the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 includes various technologies for securing performance in a high frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. Technologies such as input/output (full dimensional MIMO (FD-MIMO)), array antenna, analog beam-forming, or large scale antenna may be supported. The wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) may be supported.

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be chosen. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving a signal of the designated high frequency band. can

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( eg commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or part of the operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 is to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A , B, or C" each may include any one of, or all possible combinations of, items listed together in the corresponding one of the phrases. Terms such as “first”, “second”, or “first” or “second” may be used simply to distinguish the component from other such components, and may refer to the component in another aspect (e.g., importance or order) is not limited. It is said that one (eg, first) component is "coupled" or "connected" to another (eg, second) component, with or without the terms "functionally" or "communicatively". When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term “module” used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit. can be used as A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

According to various embodiments of the present document, one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101) may be implemented as software (eg, the program 140) including For example, the processor (eg, the processor 120 ) of the device (eg, the electronic device 101 ) may call at least one command among one or more commands stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term refers to the case where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to an embodiment, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store ^TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly between smartphones (eg: smartphones) and online. In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

2 shows a rotation module 20 according to an embodiment. 3 and 4 are exploded perspective views of the rotation module 20 according to an embodiment.

2, 3, and 4, in one embodiment, the rotation module 20 includes a cylindrical housing 210, a shaft 220, a first bearing 310, A second bearing 320 , a first cylindrical cam 410 , a second cylindrical cam 420 , a first guide pin 430 , a second guide pin 440 , a first spring (spring) 451 , and/or a second spring 452 . According to an embodiment, an electronic device including a flexible display (eg, the flexible display 1130 of FIG. 11 or the flexible display 2130 of FIG. 21A ) (eg, the electronic device 101 of FIG. 1 ) includes a rotation module ( 20), and the rotation module 20 may support movement of the flexible display.

According to an embodiment, the cylindrical housing 210 is a housing structure including a cylindrical inner surface 214 and a cylindrical outer surface 215 , for example, from a first opening 211 on one side to a second second on the other side. It may include a hollow 213 extending into the opening 212 . In various embodiments, the cylindrical housing 210 may be referred to by various other terms, such as a hollow cylinder or a cylindrical shell.

According to an embodiment, the shaft 220 may be positioned along the first center line C1 of the cylindrical housing 210 through the hollow 213 of the cylindrical housing 210 . The shaft 220 may be a rotational axis for a rotational motion (or rolling motion) of the cylindrical housing 210 . One end 221 and the other end 222 of the shaft 220 may protrude out of the hollow 213 of the cylindrical housing 210 . For example, one end 221 may protrude through the first opening 211 , and the other end 222 may protrude through the second opening 212 . One end 221 and the other end 222 of the shaft 220 support the electronic device 101 when the rotation module 20 is disposed in the electronic device (eg, the electronic device 101 of FIG. 1 ). It may be combined with a structure (eg, the support structure 500 of FIG. 5 ).

According to one embodiment, the first bearing 310 and the second bearing 320 may be positioned between the cylindrical housing 210 and the shaft 220 . The first bearing 310 and the second bearing 320 may be disposed to be substantially symmetrical with respect to the second center line C2 . The second center line C2 may pass through the center of the shaft 220 in a direction perpendicular to the first center line C1 , and may be a line serving as a reference point for symmetry with respect to the rotation module 20 . The first bearing 310 may be positioned proximate to the first opening 211 in the hollow 213 of the cylindrical housing 210 . The second bearing 320 may be positioned proximate to the second opening 212 in the hollow 213 of the cylindrical housing 210 . The first bearing 310 and the second bearing 320 may be, for example, rolling bearings. The first bearing 310 includes rolling members (eg, rolling elements) such as balls or rollers positioned between the outer ring 311 , the inner ring 312 , the outer ring 311 and the inner ring 312 . rolling elements), and a retainer that holds the rolling elements at regular intervals. The second bearing 320 may be substantially the same as the first bearing 310 . The shaft 220 may include a sliding support 223 between one end 221 and the other end 222 . A portion 223a adjacent to one end 221 of the sliding support 223 may be fitted to the inner ring 312 of the first bearing 310 . A portion 223b adjacent to the other end 222 of the sliding support 223 may be fitted to the inner ring 322 of the second bearing 320 . The outer ring 311 of the first bearing 310 may be fitted into the first opening 211 of the cylindrical housing 210 . The outer ring 321 of the second bearing 320 may be fitted into the second opening 212 of the cylindrical housing 210 . The first bearing 310 and the second bearing 320 fix the shaft 220 , which is a rotation axis with respect to the rotational motion of the cylindrical housing 210 , at a fixed position, and support the cylindrical housing 210 with respect to the shaft 220 . while contributing to smooth rotation of the cylindrical housing 210 . According to various embodiments, the first bearing 201 and/or the second bearing 202 may be implemented as a sliding bearing. The first bearing 201 and/or the second bearing 202 may be implemented as other various types of radial bearings.

According to an embodiment, the first cylindrical cam 410 and the second cylindrical cam 420 may be positioned in the hollow 213 of the cylindrical housing 210 by passing through the sliding support 223 . The first cylindrical cam 410 and the second cylindrical cam 420 may be capable of linear motion with respect to the sliding support 223 of the shaft 220 . The first cylindrical cam 410 and the second cylindrical cam 420 may be disposed to be substantially symmetrical with respect to the second center line C2 . The first cylindrical cam 410 may include a first guide groove (eg, a first cam groove) 411 formed on a cylindrical surface facing the cylindrical inner surface 214 of the cylindrical housing 210 . The first guide groove 411 may be helically extended along the cylindrical surface of the first cylindrical cam 410 . The first cylindrical cam 410 may include a first shaft hole 412 penetrated by the sliding support 223 of the shaft 220 . The second cylindrical cam 420 may include a second guide groove (or second cam groove) 421 formed on a cylindrical surface facing the cylindrical inner surface 214 of the cylindrical housing 210 . The second guide groove 421 may be helically extended along the cylindrical surface of the second cylindrical cam 420 . The second cylindrical cam 420 may include a second shaft hole 422 penetrated by the sliding support 223 of the shaft 220 .

According to an embodiment, the first guide pin 430 may be coupled to the cylindrical housing 210 to correspond to the first guide groove 411 of the first cylindrical cam 410 . The first guide pin 430 may, for example, protrude with respect to the cylindrical inner surface 214 of the cylindrical housing 210 and be inserted into the first guide groove 411 . The first guide pin 430 may be disposed on the cylindrical housing 210 in a bolted manner. The first guide pin 430 may include, for example, a fastening part 431 including a screw capable of being coupled to the first fastening hole 216 formed in the cylindrical housing 210 .

According to an embodiment, the second guide pin 440 may be coupled to the cylindrical housing 210 to correspond to the second guide groove 421 of the second cylindrical cam 420 . The second guide pin 440 may, for example, protrude from the cylindrical inner surface 214 of the cylindrical housing 210 and be inserted into the second guide groove 421 . The second guide pin 440 may be disposed on the cylindrical housing 210 through a bolt fastening method. The second guide pin 440 may include, for example, a fastening part 441 including a screw connectable to the second fastening hole 217 formed in the cylindrical housing 210 . The first guide pin 430 and the second guide pin 440 may be disposed to be substantially symmetrical with respect to the second center line C2 .

Due to the interaction between the first guide pin 430 and the first guide groove 411 , and the interaction between the second guide pin 440 and the second guide groove 421 , the first of the cylindrical housing 210 is The rotational motion based on the first center line C1 is converted into a linear motion of the first cylindrical cam 410 and a linear motion of the second cylindrical cam 420 , or a linear motion and a second motion of the first cylindrical cam 410 . The linear motion of the two-cylindrical cam 420 may be converted into a rotational motion of the cylindrical housing 210 .

According to various embodiments, the first guide pin 430 and/or the second guide pin 440 may be coupled to the cylindrical housing 210 in various other methods such as welding, without being limited to the bolt fastening method.

According to an embodiment, the first spring 451 may be positioned between the first bearing 310 and the first cylindrical cam 410 in the hollow 213 of the cylindrical housing 210 . The first spring 451 may elastically support the first cylindrical cam 410 between the first bearing 310 and the first cylindrical cam 410 . The second spring 452 may be positioned between the second bearing 320 and the second cylindrical cam 420 in the hollow 213 of the cylindrical housing 210 . The second spring 452 may elastically support the second cylindrical cam 420 between the second bearing 320 and the second cylindrical cam 420 . According to various embodiments (not shown), between the first spring 451 and the first bearing 310 , and between the second spring 452 and the second bearing 320 , a non-metallic material (eg, polymer) or a metal A support plate of material may be positioned.

5 shows a first state of the rotation module 20 according to an embodiment.

2 and 5 , the first state of the rotation module 20 is, for example, the distance between the first bearing 310 and the first cylindrical cam 410 , and the second bearing 320 and the second It may refer to a state in which the distance between the two cylindrical cams 420 is further narrowed to the maximum. The first state of the rotation module 20 may refer to, for example, a maximum compressed state in which the first spring 451 and the second spring 452 are no longer compressed.

According to an embodiment, the one end 221 and the other end 222 of the shaft 220 do not move on the support structure 500 located in the electronic device including the flexible display (eg, the electronic device of FIG. 1 ). can be fixed indefinitely. The cylindrical housing 210 may be drivably connected to the flexible display. When the flexible display is moved by an external force, the cylindrical housing 210 in a drivingly connected state with the flexible display rotates in the first circumferential direction indicated by reference numeral 'W1' (see FIG. 2 ) with respect to the shaft 220 . can do. The first guide pin 430 and the second guide pin 440 coupled to the cylindrical housing 210 may move in the first circumferential direction W1 . Due to the interaction between the first guide pin 430 and the first guide groove 411 , and the interaction between the second guide pin 440 and the second guide groove 421 , the first cylindrical cam 410 is may linearly move toward the first bearing 310 (eg, in the +y-axis direction), and the second cylindrical cam 420 may linearly move toward the second bearing 320 (eg, in the -y-axis direction). can do. As the distance between the first cylindrical cam 410 and the first bearing 310 is reduced, the first spring 451 may be compressed to a maximum that is not compressed any more. As the distance between the second cylindrical cam 420 and the second bearing 320 is reduced, the second spring 452 can be compressed to a maximum that is not compressed any more.

6 shows a second state of the rotation module 20 according to an embodiment.

2 and 6 , the second state of the rotation module 20 is, for example, the distance between the first bearing 310 and the first cylindrical cam 410 , and the second bearing 320 and the second It may refer to a state in which the distance between the two cylindrical cams 420 is not farther apart to the maximum. In the second state of the rotation module 20 , the first spring 451 and the second spring 452 may be in a substantially uncompressed state or less compressed than in the first state of FIG. 5 . According to one embodiment, due to the first restoring force of the first spring 451 to restore from the compressed state to the non-compressed state and the second restoring force that the second spring 452 is trying to restore from the compressed state to the non-compressed state, the rotation module ( 20) may be switched from the first state to the second state. The first cylindrical cam 410 may linearly move toward the second bearing 320 (eg, in the -y-axis direction) by the first restoring force by the first spring 451 . The second cylindrical cam 420 may linearly move toward the first bearing 310 (eg, in the +y-axis direction) by the second restoring force by the second spring 452 . The linear motion of the first cylindrical cam 410 may be converted into a rotational motion of the cylindrical housing 210 due to the interaction between the first guide pin 430 and the first guide groove 411 . The linear motion of the second cylindrical cam 420 may be converted into a rotational motion of the cylindrical housing 210 due to the interaction between the second guide pin 440 and the second guide groove 421 . When the rotation module 20 is switched from the first state of FIG. 5 to the second state of FIG. 6 , the cylindrical housing 210 moves in a second circumferential direction W2 ( FIG. 6 ) opposite to the first circumferential direction W1 . 2) for rotational motion.

According to an embodiment, the first state of FIG. 5 is the maximum in which the flexible display driven and connected to the rotation module 20 is no longer drawn into the internal space of the electronic device (eg, the electronic device 101 of FIG. 1 ). can respond to the incoming state. The second state of FIG. 6 may correspond to a state in which the flexible display drivably connected to the rotation module 20 is no longer drawn out of the electronic device to the maximum extent.

According to some embodiments, the first state of FIG. 5 is the maximum at which the flexible display driven and connected to the rotation module 20 is no longer drawn out of the electronic device (eg, the electronic device 101 of FIG. 1 ). It can respond to the drawn state. The second state may correspond to a state in which the flexible display driven and connected to the rotation module 20 is no longer retracted into the internal space of the electronic device.

According to one embodiment, when viewed in a direction in which the first center line C1 (refer to FIG. 2 ) extends (eg, in the y-axis direction), the first shaft hole 412 and the second shaft hole 422 are 1 It may be formed in a shape such as a polygon or an oval rather than a circle having a specified radius based on the center line C1. The sliding support 223 may have a cross-sectional shape that can be fitted into the first shaft hole 412 and the second shaft hole 422 . Due to this, when the rotation module 20 is switched between the first state of FIG. 5 and the second state of FIG. 6 , the first cylindrical cam 410 and the second cylindrical cam 420 are rotated with respect to the shaft 220 . A linear motion may be performed, and rotational motion may not be performed based on the shaft 220 . When viewed in the direction in which the first center line C1 extends, the first shaft hole 412 and the second shaft hole 422 are circular having a specified radius based on the first center line C1, the first Since the first cylindrical cam 410 and the second cylindrical cam 420 are rotatable with respect to the sliding support 223, it may be difficult to linearly move to a position corresponding to the first state of FIG. 5 or the second state of FIG. .

According to an embodiment, the first guide pin 430 may include a curved surface (eg, a hemispherical surface) for smooth friction with the first guide groove 411 of the first cylindrical cam 410 . The second guide pin 440 may include a curved surface (eg, a hemispherical surface) for smooth friction with the second guide groove 421 of the second cylindrical cam 420 .

According to one embodiment, the rotation module 20 includes a first circular gear or round gear 231 and a second circular gear 232 located on the cylindrical outer surface 215 of the cylindrical housing 210 . can do. The first circular gear 231 and the second circular gear 232 may include gear teeth disposed along the circumference of the cylindrical outer surface 215 . The first circular gear 231 and the second circular gear 232 may be integrally formed with the cylindrical housing 210 and may include the same material as the cylindrical housing 210 . For another example, the first circular gear 231 and the second circular gear 232 may be provided separately from the cylindrical housing 210 to be coupled to the cylindrical housing 210 . The first circular gear 231 and the second circular gear 232 may be disposed to be substantially symmetrical with respect to the second center line C2 . According to one embodiment, the first circular gear 231 may be located on the cylindrical outer surface 215 corresponding to the first opening 211 or the first bearing 310 of the cylindrical housing 210, the second circular The gear 232 may be positioned on the cylindrical outer surface 215 corresponding to the second opening 212 or the second bearing 320 of the cylindrical housing 210 . The first circular gear 231 and the second circular gear 232 may contribute to a driving connection with the flexible display included in the electronic device (eg, the electronic device 101 of FIG. 1 ). For example, the electronic device may include a gear structure for the flexible display, and the gear structure may be in an engaged state with the first circular gear 231 and the second circular gear 232 . A state in which the first circular gear 231 and the second circular gear 232 are meshed with the gear structure may reduce transmission loss between the movement of the flexible display and the rotational movement of the cylindrical housing 210 . In various embodiments, the circular gear of the rotation module 20 is not limited to the illustrated embodiment, and is implemented in various other forms depending on the gear structure in a driving connection state with the cylindrical housing 210 of the rotation module 20 can be According to some embodiments, the cylindrical housing 210 may be driven and connected to the flexible display without the first circular gear 231 and the second circular gear 232 .

According to one embodiment, the cylindrical housing 210, the shaft 220, the first bearing 310, the second bearing 320, the first cylindrical cam 410, the second cylindrical cam 420, the first guide Pin 430 , second guide pin 440 , first circular gear 231 , and second circular gear 232 are forces acting in transition between the first state of FIG. 5 and the second state of FIG. 6 . It may be formed of a material (eg, a metal or an engineering plastic) having a rigidity or strength that is not substantially deformed in response. Due to this, when a motion or force is transmitted between the components of the rotation module 20 in transition between the first state of FIG. 5 and the second state of FIG. 6 , a loss thereof can be reduced.

According to an embodiment, a lubricant (eg, grease) may be disposed in the rotation module 20 in order to reduce a loss in motion transmission or a loss in force transmission. For example, the shaft 220 and the first cylindrical cam 410, the shaft 220 and the second cylindrical cam 420, the first guide pin 430 and the first cylindrical cam 410, the second guide pin 440 and the second cylindrical cam 420 , the elements included in the first bearing 410 , and/or the elements included in the second bearing 420 , between two elements moving while rubbing each other. A lubricant may be interposed in the friction part to contribute to smooth movement and durability. According to some embodiments, the two elements moving while rubbing each other may be coated with a lubricant to reduce frictional force.

7 is an exploded view showing the first guide groove 411 and the second guide groove 421 in a plane according to an embodiment.

5 and 7 , the first guide groove 411 may extend from the first groove end 411a to the second groove end 411b along the cylindrical surface of the first cylindrical cam 410 . The second groove end 411b may be located closer to the first bearing 310 than the first groove end 411a. In an embodiment, the first guide groove 411 may include a first section 711 and a second section 712 . The first section 711 may extend in the circumferential direction from the end of the first groove 411a. The second section 712 may spirally extend from the first section 711 to the second groove end 411b. The second section 712 may form an obtuse angle with the first section 711 when viewed in the development view of FIG. 7 . The second cylindrical cam 420 including the second guide groove 421 is substantially symmetrical with the first cylindrical cam 410 including the first guide groove 411 with respect to the second center line C2. can The second guide groove 421 may extend from the first groove end 421a to the second groove end 421b along the cylindrical surface of the second cylindrical cam 420, the first section 721 and the second It may include a section 722 . The first guide pin 430 is positioned in the first section 711 of the first guide groove 411 , and the second guide pin 440 is positioned in the first section 721 of the second guide groove 421 . , the first state of FIG. 5 may be maintained. Although the first restoring force F1 that the first spring 451 wants to restore to the uncompressed state presses the first cylindrical cam 410 in the -y-axis direction, the first restoring force F1 is substantially the first guide pin ( 430) and the first section 711 of the first guide groove 411 may act as a supporting force (or vertical drag). Although the second restoring force F2, which the second spring 452 tries to restore to the non-compressed state, presses the second cylindrical cam 420 in the +y-axis direction, the second restoring force F2 is substantially the second guide pin ( 440 ) and the second guide groove 421 may act as a supporting force (or vertical drag) between the first section 721 . According to various embodiments, the first section 711 of the first guide groove 411 includes a first recess 711a corresponding to the first guide pin 430, and the second guide groove ( The first section 721 of 421 may also contribute to maintaining the first state of FIG. 5 by including the second recess 721a corresponding to the second guide pin 440 .

According to one embodiment, the cylindrical housing 210 is rotated with respect to the shaft 220 by an external force, and the first guide pin 430 leaves the first section 711 and enters the second section 712, The second guide pin 440 may leave the first section 721 and enter the second section 722 . In this case, the rotation module 20 of FIG. 6 in the first state of FIG. 5 due to the first restoring force F1 by the first spring 451 and the second restoring force F2 by the second spring 452 It can be switched to the second state. The first restoring force F1 by the first spring 451 is, for example, the supporting force F11 between the first guide pin 430 and the second section 712, and the first guide pin 430 and It may act as a force (hereinafter, sliding force) F12 for sliding between the second sections 712 . The second restoring force F2 by the second spring 452 is, for example, the supporting force F21 between the second guide pin 440 and the second section 722, and the second guide pin 440 and It may act as a sliding force F22 between the second sections 722 . The sliding force F12 between the first guide pin 430 and the second section 712 is the support force F11 and the first guide pin 430 between the first guide pin 430 and the second section 712 . and the frictional force FF1 in consideration of the coefficient of friction between the second section 712 and may be directed in a direction opposite to that of the frictional force FF1. The sliding force F22 between the second guide pin 440 and the second section 722 is the support force F21 and the second guide pin 440 between the second guide pin 440 and the second section 722 . and the frictional force FF2 in consideration of the coefficient of friction between the second section 722 and may be directed in a direction opposite to that of the frictional force FF2. For this reason, the first cylindrical cam 410 and the second cylindrical cam 420 linearly move in different directions, and the cylindrical housing 210 rotates in the second circumferential direction W2 (see FIG. 2 ). can do. The first restoring force F1 and the second restoring force F2 may be reduced due to the characteristics of the spring during the transition from the first state of FIG. 5 to the second state of FIG. 6 , but the rotation module 20 is driven and connected It may have a size that can contribute to the movement of the flexible display. Hereinafter, for better understanding of the embodiment of the present invention, it may be said that the first restoring force F1 and the second restoring force F2 are maintained in a critical range. During the transition from the first state of FIG. 5 to the second state of FIG. 6 , the first restoring force F1 and the second restoring force F2 have substantially the same magnitude and may act in opposite directions. This may contribute to smooth rotation of the cylindrical housing 210 by balancing the force based on the second center line C2 . According to various embodiments, various elastic members or elastic structures may be used to replace the first spring 451 and/or the second spring 452 .

In the second state of FIG. 6 , the first guide pin 430 is positioned at the second groove end 411b of the first guide groove 411 , and the second guide pin 440 is the second guide groove 421 . It may be located at the end of the second groove 421b. When the rotation module 20 switches between the first state of FIG. 5 and the second state of FIG. 6 , the rotation angle of the cylindrical housing 210 is the first groove end 411a of the first guide groove 411 and It may be substantially determined by the second groove end 411b. When the rotation module 20 is driven and connected to the flexible display included in the electronic device (eg, the electronic device 101 of FIG. 1 ), the moving distance of the flexible display may correspond to the rotation angle of the cylindrical housing 210 .

According to one embodiment, when viewed in the development view of FIG. 7 , the second section 712 of the first guide groove 411 may extend straight in a direction forming an obtuse angle with the first section 711, and the second guide The second section 722 of the groove 421 may extend in a direction forming an obtuse angle with the first section 721 . When the rotation module 20 is switched from the first state of FIG. 5 to the second state of FIG. 6 , when the rotation speed of the cylindrical housing 210 does not become zero at the completion of the second state, two relatively moving two A collision phenomenon may occur in which elements (eg, the first guide pin 430 and the second groove end 411b of the first guide groove 411) strongly interact for a relatively short time. When the second state is completed, for example, the first guide pin 430 is positioned at the second groove end 411b of the first guide groove 411 , and the second guide pin 440 is the second guide It may be when located at the second groove end 421b of the groove 421 . Due to such a collision phenomenon, it may be difficult to provide a user with a smooth sliding motion with respect to the flexible display driven and connected to the rotation module 20 . The impact caused by such a collision phenomenon may damage the rotation module 20 or the driving connection state between the rotation module 20 and the flexible display. According to various embodiments, the second section 612 of the first guide groove 411 and the second section 722 of the second guide groove 421 are in the first state of FIG. 5 to the second state of FIG. 6 . When converted to , it may be implemented to control the rotation speed of the cylindrical housing 210 , which will be described with reference to FIG. 8 .

8 is an exploded view showing the first guide groove 411 and the second guide groove 421 according to another embodiment in a plan view.

Referring to FIG. 8 , the first guide groove 411 may include a first section 711 and a second section 712 . According to an embodiment, the second section 712 may include a third section 813 and a fourth section 814 . The third section 813 may be located between the first section 711 and the fourth section 814 . The third section 813 may extend straight in a direction forming an obtuse angle with the first section 711 when viewed in the development view of FIG. 8 . The fourth section 814 may have a curved shape in which the inclination is gradually decreased as it progresses from the third section 813 to the second groove end 211b when viewed in the development view of FIG. 8 . When the first guide pin 430 is positioned in the third section 813 , the first restoring force F1 by the first spring 451 is between the first guide pin 430 and the third section 813 . It may act as a first support force (or first vertical drag force) F11 and a first sliding force F12 between the first guide pin 430 and the third section 813 . When the first guide pin 430 is positioned in the fourth section 814 , the first restoring force F1 by the first spring 451 is between the first guide pin 430 and the fourth section 814 . It may act as a second supporting force (or second vertical drag force) F13 and a second sliding force F14 between the first guide pin 430 and the fourth section 814 . The first sliding force F12 between the first guide pin 430 and the third section 813 is the first supporting force F11 and the first guide between the first guide pin 430 and the third section 813 . The first frictional force FF1 in consideration of the coefficient of friction between the pin 430 and the third section 813 may be directed in a direction opposite to that of the first frictional force FF1 . The second sliding force F14 between the first guide pin 430 and the fourth section 814 is the second support force F13 and the first guide between the first guide pin 430 and the fourth section 814 . The second frictional force FF2 in consideration of the coefficient of friction between the pin 430 and the fourth section 814 may be directed in the opposite direction and may be greater than the frictional force FF2 . The second sliding force F14 may be smaller than the first sliding force F12 . The difference between the second sliding force F14 and the second friction force FF2 for the fourth section 814 is the difference between the first sliding force F12 and the first friction force FF1 for the third section 813 . may be less than the difference. As the first guide pin 430 approaches the second groove end 411b in the fourth section 814, the difference between the second sliding force F14 and the second friction force FF2 may gradually decrease. there is. The second guide groove 421 may be symmetrical with the first guide groove 411 with respect to the second center line C2, for example, the first section 721 and the third section 823 and A second section 722 including a fourth section 824 may be included. The sliding force between the second guide pin 440 and the second guide groove 421 may be formed in substantially the same manner as the sliding force between the first guide pin 430 and the first guide groove 411 . When the rotation module 20 is switched from the first state of FIG. 5 to the second state of FIG. 6 , the fourth section 814 of the first guide groove 411 and the fourth section of the second guide groove 421 824 may gradually reduce the difference between the sliding force and the friction force, whereby the rotational speed of the cylindrical housing 210 may become zero while gradually decreasing.

As in the embodiment of FIG. 8 , the first section 711 and the third section 813 of the first guide groove 411 , and the first section 721 and the third section ( 721 ) of the second guide groove 421 ( 823) may not be seamlessly connected. In this case, while the rotation module 20 is switched from the first state of FIG. 5 to the second state of FIG. 6 , the first restoring force by the first spring 451 and the second restoring force by the second spring 452 . Due to this, the rotational speed of the cylindrical housing 210 may increase abruptly. This phenomenon may make it difficult to smoothly slide the flexible display connected to the rotation module 20 . The impact caused by this phenomenon may damage the rotation module 20 or the driving connection state between the rotation module 20 and the flexible display. To solve this, the first section 711 and the third section 813 of the first guide groove 411, and the first section 721 and the third section 823 of the second guide groove 421 are can be seamlessly connected.

9 is an exploded view showing the first guide groove 411 and the second guide groove 421 according to another embodiment in a plan view.

Referring to FIG. 9 , the first guide groove 411 may include a first section 711 and a second section 712 . According to an embodiment, the second section 712 may include a third section 913 , a fourth section 914 , and a fifth section 915 . The third section 913 may be positioned between the first section 711 and the fourth section 914 , and the fourth section 914 may be positioned between the third section 913 and the fifth section 915 . there is. The third section 913 may have a curved shape in which the slope is gradually increased while proceeding from the first section 711 to the fourth section 914 when viewed in the development view of FIG. 9 . The fourth section 914 may be a straight line with a constant inclination or a curved shape with a gradual decrease in inclination while proceeding from the third section 913 to the fifth section 915 when viewed in the development view of FIG. 9 . The fifth section 915 may have a curved shape in which the slope is gradually decreased while proceeding from the fourth section 914 to the end of the second groove 411b when viewed in the development of FIG. 9 . When the first guide pin 430 is positioned in the third section 913 , the first restoring force F1 by the first spring 451 is between the first guide pin 430 and the third section 913 . It may act as a first support force (or first vertical drag force) F11 and a first sliding force F12 between the first guide pin 430 and the third section 913 . When the first guide pin 430 is positioned in the fourth section 914 , the first restoring force F1 by the first spring 451 is between the first guide pin 430 and the fourth section 914 . It may act as a second supporting force (or second vertical drag force) F13 and a second sliding force F14 between the first guide pin 430 and the fourth section 914 . When the first guide pin 430 is positioned in the fifth section 915 , the first restoring force F1 by the first spring 451 is between the first guide pin 430 and the fifth section 915 . It may act as a third supporting force (or third vertical drag force) F15 and a third sliding force F16 between the first guide pin 430 and the fifth section 915 . The first sliding force F12 and the third sliding force F16 may be smaller than the second sliding force F14. As the first guide pin 430 approaches the fourth section 914 in the third section 913 , the first sliding force F12 may gradually increase. As the first guide pin 430 approaches the fifth section 915 in the fourth section 914 , the second sliding force F14 may gradually decrease. As the first guide pin 430 approaches the second groove end 411b in the fifth section 915 , the third sliding force F16 may gradually decrease.

The first sliding force F12 between the first guide pin 430 and the third section 913 is the first supporting force F11 and the first guide between the first guide pin 430 and the third section 913 . The first frictional force FF1 in consideration of the coefficient of friction between the pin 430 and the third section 913 may be directed in a direction opposite to that of the first frictional force FF1 . As the first guide pin 430 approaches the fourth section 914 from the third section 913, the difference between the first sliding force F12 and the first friction force FF1 may gradually increase. .

The third sliding force F16 between the first guide pin 430 and the fifth section 915 is the third supporting force F15 and the first guide between the first guide pin 430 and the fifth section 915 . The third frictional force FF3 in consideration of the coefficient of friction between the pin 430 and the fifth section 915 may be directed in a direction opposite to that of the third frictional force FF3 . As the first guide pin 430 approaches the end of the second groove 411b in the fifth section 915, the difference between the third sliding force F16 and the third friction force FF3 may gradually decrease. there is.

The second sliding force F14 between the first guide pin 430 and the fourth section 914 is the second support force F13 and the first guide between the first guide pin 430 and the fourth section 914 . The second frictional force FF2 in consideration of the coefficient of friction between the pin 430 and the fourth section 914 may be directed in a direction opposite to that of the second frictional force FF1 . When the fourth section 914 is a curved shape in which the inclination is gradually reduced while proceeding from the third section 913 to the fifth section 915 when viewed in the development view of FIG. 9 , the first guide pin 430 is As the fourth section 914 approaches the fifth section 915 , the difference between the second sliding force F14 and the second friction force FF2 may gradually decrease. In some embodiments, when the fourth section 914 is a straight line with a constant slope while proceeding from the third section 913 to the fifth section 915 when viewed in the development view of FIG. 9 , the first guide pin 430 ) from the fourth section 914 to the fifth section 915 , the difference between the second sliding force F14 and the second friction force FF2 may be constant.

The second guide groove 421 may be symmetrical with the first guide groove 411 with respect to the second center line C2, and includes, for example, a first section 721 and a second section 722 . The second section 722 may include a third section 923 , a fourth section 924 , and a fifth section 925 . The sliding force between the second guide pin 440 and the second guide groove 421 may be formed in substantially the same manner as the sliding force between the first guide pin 430 and the first guide groove 411 . When the rotation module 20 is switched from the first state of FIG. 5 to the second state of FIG. 6 , the third section 913 of the first guide groove 411 and the third section of the second guide groove 421 923 may gradually increase the difference between the sliding force and the friction force, whereby the rotational speed of the cylindrical housing 210 may gradually increase. When the rotation module 20 is switched from the first state of FIG. 5 to the second state of FIG. 6 , the fifth section 915 of the first guide groove 411 and the fifth section of the second guide groove 421 925 may gradually reduce the difference between the sliding force and the friction force, whereby the rotational speed of the cylindrical housing 210 may become zero while gradually decreasing.

10 is an exploded view showing the first guide groove 411 and the second guide groove 421 in a plane according to various embodiments.

Referring to FIG. 10 , the first guide groove 411 may include a first section 711 and a second section 712 . According to an embodiment, the second section 712 includes a plurality of first recesses in the form of a recess in a direction from the first cylindrical cam 410 to the first spring 451 (eg, in the +y-axis direction). (recesses) (1011, 1012) may be included. The second guide groove 421 may be symmetrical with the first guide groove 411 with respect to the second center line C2, and includes, for example, a first section 721 and a second section 722 . can do. The second section 722 includes a plurality of second recesses 1021 and 1022 having a concave shape in a direction from the second cylindrical cam 420 to the second spring 452 (eg, in the -y-axis direction). may include The second recesses 1021 and 1022 may be positioned at portions substantially symmetrical to the first recesses 1011 and 1012 with respect to the second center line C2 . For example, the second recess 1021 is symmetrical with the first recess 1011 with respect to the second center line C2 , and the second recess 1022 is symmetrical with the second center line C2 with respect to the second center line C2 . may be symmetrical with the first recess 1012 . The first guide pin 430 of FIG. 2 is positioned in one of the plurality of first recesses 1011 and 1012 , and the second guide pin 440 of FIG. 2 is positioned in the plurality of second recesses 1021 , 1021 , 1022), the rotation module 20 may be in a third state. The third state may indicate a state between the first state of FIG. 5 and the second state of FIG. 6 . In the state change of the rotation module 20 , due to the plurality of first recesses 1011 and 1012 and the plurality of second recesses 1021 and 1022 , the rotation angle of the cylindrical housing 210 of FIG. 2 is changed can be adjusted. When the rotation module 20 is driven and connected to the flexible display included in the electronic device (eg, the electronic device 101 of FIG. 1 ), the moving distance of the flexible display may correspond to the rotation angle of the cylindrical housing 210 . The first recess and the second recess are not limited to the embodiment of FIG. 10 and may be formed in various numbers, various positions, and/or in various shapes. For example, there may be two or more of the first recess and the second recess, and an interval between the recesses may be different. As another example, the first recess and the second recess may be semicircular, triangular, quadrangular, or polygonal, and the first recess and the second recess that are not symmetric with respect to the second center line C2 are different from each other. may be in the form

11 is a perspective view of an electronic device 1100 in a closed state according to an exemplary embodiment. 12 is a perspective view of an electronic device 1100 in an open state according to an exemplary embodiment.

11 and 12 , in an embodiment, the electronic device 1100 may include a housing 1110 , a sliding plate 1120 , and a flexible display 1130 . The housing (or housing structure) includes, for example, a first side housing part 1111 , a second side housing part 1112 , and a rear housing part (hereinafter referred to as a back cover). (1113) may be included. The first side housing part 1111 and the second side housing part 1112 may be positioned opposite to each other on the x-axis corresponding to both short edges of the back cover 1113 , respectively. The first side housing part 1111 and/or the second side housing part 1112 may include a metal and/or a polymer. The back cover 1113 may be substantially opaque. For example, the back cover 1113 may be formed by coated or tinted glass, ceramic, polymer, metal (eg, aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the foregoing. there is.

According to an embodiment, the electronic device 1100 may be implemented to expand the screen S in a sliding manner. The screen S may be, for example, a display area (or an active area) that is viewed from the outside of the flexible display 1130 . 11 shows the electronic device 1100 in a state in which the screen S is not expanded, and FIG. 12 shows the electronic device 1100 in a state in which the screen S is expanded. The state in which the screen S is not expanded is a state in which the sliding plate 1120 for the sliding motion of the flexible display 1130 is not slide-out from the housing 1110, which is referred to as a 'closed state'. ' can be referred to as For example, the slide-out may mean that the sliding plate 1120 moves at least partially in a first direction (eg, a +x-axis direction) when the electronic device 1100 is switched from a closed state to an open state. The expanded state of the screen S is a state in which the screen S is no longer expanded due to the slide out of the sliding plate 1120 and may be referred to as an 'open state' hereinafter. According to various embodiments, the open state may be defined as a state in which the screen S is expanded compared to the closed state, and screens S of various sizes may be provided according to the moving position of the sliding plate 1120 . . According to various embodiments, the intermediated state may refer to a state between the closed state of FIG. 11 and the open state of FIG. 12 . The flexible display 1130 may include a first area (①) and a second area (②). At least a portion of the first region ① may be disposed to overlap the sliding plate 1120 . The second area ② may include an extended portion of the screen S when the electronic device 1100 is switched from a closed state (see FIG. 11 ) to an open state (see FIG. 12 ). When the electronic device 1100 is switched from the closed state to the open state, at least a portion of the second region ② is drawn out from the internal space of the electronic device 1100 as if sliding, and thus the screen S may be expanded. there is. When the electronic device 1100 is switched from an open state to a closed state, at least a part of the second region ② slides into the internal space of the electronic device 1100, and thus the screen S may be reduced. there is. The second area (②) is a bent portion of the flexible display 1130 when there is a transition between an open state and a closed state of the electronic device 1100, for example, a bendable area or a bendable section ( It may also be referred to as a bendable section). The screen S may include an active area of the flexible display 1130 that is visually exposed to output an image, and the electronic device 1100 moves the sliding plate 1120 or moves the flexible display 1130 . The active area can be adjusted accordingly. In the following description, the open state may refer to a state in which the screen S is maximized. In some embodiments, the flexible display 1130 that is disposed on the electronic device 1100 to be able to slide and provides the screen S is a 'slide-out display' or 'expandable display'. may be referred to as According to various embodiments, the electronic device 1100 including the flexible display 1130 may include the electronic device 101 of FIG. 1 .

According to an embodiment, the screen S includes a first flat portion S1, and a first curved portion S2 and/or located opposite to each other on the x-axis with the first flat portion S1 interposed therebetween. A second curved portion S3 may be included. For example, the first curved portion S2 and the second curved portion S3 may be substantially symmetrical with the first flat portion S1 interposed therebetween. When the closed state of FIG. 11 is changed to the open state of FIG. 12 , the first planar part S1 may be expanded. A portion of the second region (②) forming the first curved portion S2 in the closed state of FIG. 11 is expanded when the closed state of FIG. 11 is switched to the open state of FIG. 12 , the first flat portion S1 , and in the open state of FIG. 12 , the first curved portion S2 may be formed as another region of the second region ②.

Referring to the closed state of the electronic device 1100 illustrated in FIG. 11 , the electronic device 1100 may include a rear surface B positioned opposite to the screen S. The rear surface B includes a second flat portion B1 and a third curved portion B2 and a fourth curved portion B3 positioned on opposite sides on the x-axis with the second flat portion B1 interposed therebetween. may include The second flat portion B1 may be positioned to correspond to the first flat portion S1 of the screen S and may be parallel to the first flat portion S1 . The third curved portion B2 may be positioned to correspond to the first curved portion S2 of the screen S, and may include a curved surface curved from the second flat portion B1 toward the first curved portion S2 . The fourth curved portion B3 may be positioned to correspond to the second curved portion S3 of the screen S, and may include a curved surface curved from the second flat portion B1 toward the second curved portion S3 . According to an embodiment, when the electronic device 1100 is viewed in the -x-axis direction in the closed state of FIG. 11 , a portion 1116 of the support member connected to the housing 1110 includes the first curved portion S2 and the third It may be exposed between the curved portions B2 to form a portion of the outer surface of the electronic device 1100 . According to some embodiments, the back cover 1113 may be expanded to replace a portion 1116 of the support member. Referring to the closed state of the electronic device 1100 shown in FIG. 11 , in one embodiment, the first side housing unit 1111 may cover the space between the screen S and the rear surface B from one side, and , the second side housing portion 1112 may cover the space between the screen (S) and the rear surface (B) from the other side.

According to various embodiments, in a state in which the second area (②) of the flexible display 1130 is at least partially drawn into the inner space of the housing 1110 (eg, in a closed state), at least a portion of the second area (②) is It may be arranged to be visible from the outside through the back cover 1113 . In this case, at least a portion of the back cover 1113 may be formed of a transparent material and/or a translucent material.

According to an embodiment, the electronic device 1100 includes a rotation module (eg, the rotation module 20 of FIG. 2 ) located inside the electronic device 1100 corresponding to the second area (②) of the flexible display 1130 . ) may be included. The second area (②) of the flexible display 1130 may be drivably connected to the rotation module, and through rotation of the rotation module in the transition between the closed state of FIG. 11 and the open state of FIG. 12 , the second area (②) The movement of and the direction of movement may be guided. The first curved portion S2 of the screen S may be formed by a portion corresponding to the curved surface of the rotation module in the second area ②. The second curved portion S3 of the screen S may be formed to correspond to the curved surface formed on one surface of the sliding plate 1120 . The second curved portion S3 may be positioned opposite to the first curved portion S2 in the closed or open state of the electronic device 1100 to improve the aesthetics of the screen S. According to some embodiments, the flat portion S1 may be implemented in an expanded form without the second curved portion S3 .

According to an embodiment, the flexible display 1130 may further include a touch sensing circuit (eg, a touch sensor). According to various embodiments (not shown), the flexible display 1130 includes a pressure sensor capable of measuring the intensity (pressure) of a touch, and/or a digitizer that detects a magnetic field type pen input device (eg, a stylus pen); They may be combined or placed adjacent to each other. For example, the digitizer may include a coil member disposed on a dielectric substrate to detect a resonance frequency of an electromagnetic induction method applied from the pen input device.

According to an embodiment, the electronic device 1100 includes a first camera module 1171 , second camera modules 1172 (eg, the camera module 180 of FIG. 1 ), and/or a flash (or a light emitting module). ) (1173). The first camera module 1171 and/or the second camera modules 1172 may include one or more lenses, an image sensor, and/or an image signal processor. The flash 1173 may include, for example, a light emitting diode or a xenon lamp.

According to an embodiment, the first camera module (or front camera module) 1171 transmits one surface of the electronic device 1100 placed in the direction toward which the screen S faces and generates an image signal based on the received light. can For example, the first camera module 1171 may be aligned with an opening (eg, a through hole or a notch) formed in the flexible display 1130 and positioned inside the electronic device 1100 . In this case, external light may pass through the opening and a partial region of the transparent cover overlapping the opening to be introduced into the first camera module 1171 . The transparent cover serves to protect the flexible display 1130 from the outside, and may include, for example, a material such as polyimide or ultra thin glass (UTG). For another example, the first The camera module 1171 may be located inside the electronic device 1100 to correspond to the first side housing unit 1111 .

According to some embodiments, the first camera module 1171 may be disposed at the bottom of at least a part of the screen S, and the position of the first camera module 1171 is not visually distinguished (or exposed) and related functions (eg taking an image) can be performed. For example, the first camera module 1171 may be located on the back side of the screen S, or below or beneath the screen S. According to various embodiments, the first camera module 1171 may be aligned and positioned in a recess formed on the rear surface of the flexible display 1130 . When viewed from the top of the screen S (eg, when viewed in the -z axis direction), the first camera module 1171 is disposed to overlap at least a part of the screen S, and is not exposed to the outside, but an external subject image can be obtained. In this case, a portion of the flexible display 1130 that is at least partially overlapped with the first camera module 1171 may include a pixel structure and/or a wiring structure different from other areas. For example, a portion of the flexible display 1130 that is at least partially overlapped with the first camera module 1171 may have a different pixel density than other areas. A pixel structure and/or a wiring structure formed in a partial area of the flexible display 1130 overlapping at least in part with the first camera module 1171 may reduce light loss between the outside and the first camera module. According to some embodiments, pixels may not be disposed in a partial region of the flexible display 1130 that at least partially overlaps the first camera module 1171 .

According to an embodiment, the second camera modules 1172 and/or the flash 1173 may be located on the rear surface B of the electronic device 1100 . The second camera modules 1172 (eg, dual camera or triple camera) may have different properties (eg, angle of view) or functions. For example, the second camera modules 1172 may include at least one or more lenses having different angles of view, and the electronic device 1100 performs It can be controlled to change the angle of view of the camera module. For another example, the second camera modules 1172 are a wide-angle camera, a telephoto camera, a color camera, a monochrome camera, or an IR (infrared) camera (eg, a time of flight (TOF) camera, a structured light camera). may include at least one of In various embodiments, the IR camera may be operated as at least a part of a sensor module (not shown).

According to various embodiments (not shown), the electronic device 1100 may include various sensor modules (eg, the sensor module 176 of FIG. 1 ). The sensor module may generate an electrical signal or data value corresponding to an internal operating state of the electronic device 1100 or an external environmental state. The sensor module may include, for example, a proximity sensor, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biometric sensor (eg, a fingerprint sensor, an HRM sensor); It may include at least one of a temperature sensor, a humidity sensor, and an illuminance sensor. According to an embodiment, the sensor module may be located inside the electronic device 1100 to correspond to the first side housing part 1111 . According to another embodiment, the sensor module may include an optical sensor, aligned with an opening (eg, a through hole, or a notch) formed in the flexible display 1130 to be positioned inside the electronic device 1100 . can In this case, external light may pass through the opening and a partial region of the transparent cover overlapping the opening to be introduced into the optical sensor.

According to some embodiments, the sensor module may be disposed at the bottom of at least a part of the screen (eg, a screen display area or an active area) S of the flexible display 1130 , and the position of the sensor module is visually distinguished (or It can perform related functions without being exposed). For example, the sensor module may be located on the rear surface of the screen S of the flexible display 1130 or below or beneath the screen S of the flexible display 1130 . According to various embodiments, the sensor module may be aligned and positioned in a recess formed on the rear surface of the flexible display 1130 . When viewed from the top of the screen S (eg, when viewed in the -z axis direction), the sensor module is disposed to overlap at least a part of the screen S, and can perform a corresponding function without being exposed to the outside. . In this case, a portion of the flexible display 1130 overlapped with the sensor module at least partially may include a pixel structure and/or a wiring structure different from that of the other areas. For example, some areas of the flexible display 1130 that are at least partially overlapped with the sensor module may have different pixel densities compared to other areas. A pixel structure and/or a wiring structure formed in a partial area of the flexible display 1130 that is at least partially overlapped with the sensor module allows various types of signals (eg, light or ultrasound) related to the sensor module to pass between the outside and the sensor module. when that loss can be reduced. According to some embodiments, a plurality of pixels may not be disposed in a partial area of the flexible display 1130 that at least partially overlaps the sensor module.

According to an embodiment, the electronic device 1100 may include a key input device 1175 (eg, the input module 150 of FIG. 1 ). The key input device 1174 may be located, for example, on a portion 1116 of a support member that forms a portion of an outer surface of the electronic device 1100 . In some embodiments (not shown), the key input device may include at least one sensor module.

According to various embodiments, the electronic device 1100 may omit at least one of the components or may additionally include other components. For example, the electronic device 1100 may include a microphone positioned inside the housing 1110 and a corresponding microphone hole formed in the housing 1110 . According to some embodiments, the electronic device 1100 may include a plurality of microphones capable of detecting the direction of sound. For example, the electronic device 1100 may include a speaker positioned inside the housing 1110 and a speaker hole formed in the housing 1110 corresponding thereto. For example, the electronic device 1100 may include a receiver for calls positioned inside the housing 1110 and a receiver hole formed in the housing 1110 corresponding thereto. In some embodiments, the microphone hole and the speaker hole may be implemented as a single hole, or the speaker hole may be omitted like a piezo speaker. For example, the electronic device 1100 may include a connector (eg, a USB connector) positioned inside the housing 1110 and a connector hole 1176 formed in the housing 1110 corresponding thereto. The electronic device 1100 may transmit and/or receive power and/or data to and/or from an external electronic device electrically connected to the connector through the connector hole 1176 .

13 is an exploded view of the electronic device 1100 of FIG. 11 according to an exemplary embodiment.

Referring to FIG. 13 , in an embodiment, the electronic device 1100 includes a first side housing unit 1111 , a second side housing unit 1112 , a back cover 1113 , a support member assembly 1300 , and a sliding plate. 1120 , flexible display 1130 , support sheet 1350 , multi-bar structure (or multi-bar assembly) 1360 , rotation module 20 , printed circuit board 1370 . ), and/or a battery 1380 . A duplicate description of some of the reference numerals in FIG. 13 will be omitted.

According to an embodiment, the support member assembly (or support structure) 1300 is a frame structure capable of withstanding a load, and may contribute to durability or rigidity of the electronic device 1100 . At least a portion of the support member assembly 1300 may include a non-metallic material (eg, a polymer) and/or a metallic material. The first side housing unit 1111 , the second side housing unit 1112 , the back cover 1113 , the rotation module 20 , the sliding plate 1120 , the flexible display 1130 , the support sheet 1350 , the multi-bar Elements such as structure 1360 , printed circuit board 1370 , or battery 1380 may be disposed in support member assembly 1300 .

According to one embodiment, support member assembly 1300 includes a first support member 1310 , a second support member 1320 , a third support member 1330 , and/or a fourth support member 1340 . ) may be included. The first support member (or first bracket) 1310 may be, for example, in the form of a plate, and the sliding plate 1120 is slidably supported with respect to one surface of the first support member 1310 . It may be disposed on the member assembly 1300 . The fourth support member (or the fourth bracket) 1340 may be coupled to the other surface of the first support member 1310 . A printed circuit board 1370 (eg, a printed circuit board (PCB), flexible PCB (FPCB), or rigid-flex PCB (RFPCB)) may be positioned between the first support member 1310 and the fourth support member 1340 . can The fourth support member 1340 may cover and protect the printed circuit board 1370 . The fourth support member 1340 may absorb or shield electromagnetic waves that may affect the printed circuit board 1370 (eg, shield electromagnetic interference (EMI)). The second support member (or second bracket) 1320 and the third support member (or third bracket) 1330 may be positioned on opposite sides with the first support member 1310 interposed therebetween. The second support member 1320 may be coupled to one side of the first support member 1310 using bolts 1381 to correspond to the first side housing part 1111 . The third support member 1330 may be coupled to the other side of the first support member 1310 using bolts 1382 to correspond to the second side housing part 1112 . The first side housing part 1111 may be coupled to the second support member 1320 using bolts 1383 . The second side housing part 1112 may be coupled to the third support member 1330 using bolts 1384 .

According to an embodiment, the first side housing part 1111 may include a first side cover 1111a and a first edge cover 1111b. The first side cover 1111a may form a first side surface of the electronic device 1100 and may be coupled to the first edge cover 1111b. The first edge cover 1111b may form an edge area on one side of the electronic device 1100 to correspond to the first side surface. The first edge cover 1111b may be coupled to the second support member 1320 using bolts 1383 . The first side cover 1111a may be coupled to the first edge cover 1111b through a fastening method such as snap-fit, for example. The second side housing unit 1112 may include a second side cover 1112a and a second edge cover 1112b. The second side cover 1112a may form a second side surface of the electronic device 1200 and may be coupled to the second edge cover 1112b. The second side surface may face in a direction opposite to the first side surface by the first side housing part 1111 . The second edge cover 1112b may form the other edge area of the electronic device 1100 to correspond to the second side surface. The second edge cover 1112b may be coupled to the third support member 1330 using bolts 1384 . The second side cover 1112a may be coupled to the second edge cover 1112b through a fastening method such as snap-fit, for example.

According to some embodiments, the first side housing part 1111 and the second support member 1320 may be integrally formed and may include the same material. The second side housing part 1112 and the third support member 1330 may be integrally formed and may include the same material.

According to some embodiments, the first edge cover 1111b and the second support member 1320 may be integrally formed and may include the same material. The second edge cover 1112b and the third support member 1330 may be integrally formed and may include the same material.

According to an embodiment, the printed circuit board 1370 and/or the battery 1380 may be disposed or coupled to the first support member 1310 in the internal space of the electronic device 1100 . The printed circuit board 1370 and the battery 1380 may not overlap each other when viewed from the top of the back cover 1113 (eg, viewed in the +z-axis direction). The printed circuit board 1370 may be electrically connected to the flexible display 1130 through, for example, a flexible printed circuit board (FPCB) (not shown). Printed circuit board 1370 includes a processor (eg, processor 120 in FIG. 1 ), memory (eg, memory 130 in FIG. 1 ), and/or an interface (eg, interface 177 in FIG. 1 ). can be mounted The processor may include, for example, one or more of a central processing unit, an application processor, a graphics processing unit, an image signal processor, a sensor hub processor, or a communication processor. Memory may include, for example, volatile memory or non-volatile memory. The interface may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and/or an audio interface. The interface may, for example, electrically or physically connect the electronic device 200 to an external electronic device, and may include a USB connector, an SD card/MMC connector, or an audio connector. The electronic device 1100 may include various other elements disposed on the printed circuit board 1370 or electrically connected to the printed circuit board 1370 . The battery 1380 is a device for supplying power to at least one component of the electronic device 1100 and may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. . The battery 1380 may be integrally disposed inside the electronic device 1100 or may be detachably disposed from the electronic device 1100 .

According to various embodiments (not shown), the electronic device 1100 includes an antenna positioned at least partially between the fourth support member 1340 and the back cover 1113 , or between the battery 1380 and the back cover 1113 . may include The antenna may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and/or a magnetic secure transmission (MST) antenna. The antenna may, for example, perform short-range communication with an external device or wirelessly transmit/receive power required for charging. In another embodiment, the antenna structure may be formed by at least a portion of the sliding plate 1120 , the support member assembly 1300 , the first side housing unit 1111 , or the second side housing unit 1112 .

According to an embodiment, the second support member 1320 and the third support member 1330 are parallel to the first direction (eg, the +x axis direction) in which the sliding plate 1120 can slide out of the electronic device 1100 . ) may be substantially symmetrical with respect to the center line C (see FIG. 11 or 12 ). The center line C of the electronic device 1100 may be, for example, a line serving as a reference point for symmetry with respect to the first flat portion S1 of the screen S.

According to an embodiment, the flexible display 1130 may include a first area (①) and a second area (②) extending from the first area (①). The first region ① may be disposed to overlap the sliding plate 1120 . The sliding plate 1120 may include a first surface 1121 and a second surface (not shown) positioned opposite to the first surface 1121 . The first region ① may be coupled to the first surface 1121 of the sliding plate 1120 using an adhesive member (or an adhesive member) (not shown). The adhesive member may include, for example, a thermally responsive adhesive member, a photoreactive adhesive member, a general adhesive, and/or a double-sided tape. According to some embodiments, the first region ① may be disposed and fixed in a recess formed in the sliding plate 1120 . The sliding plate 1120 serves to support at least a portion of the flexible display 1130 , and may be referred to as a 'display support structure' in some embodiments.

According to an embodiment, the support sheet 1350 may be disposed or coupled to the rear surface of the flexible display 1130 . The rear surface of the flexible display 1130 may refer to a surface positioned opposite to a surface from which light is emitted from a display panel including a plurality of pixels. The support sheet 1350 may contribute to durability of the flexible display 1130 . The support sheet 1350 may reduce the effect of a load or stress that may occur in transition between the closed state of FIG. 11 and the open state of FIG. 12 on the flexible display 1130 . The support sheet 1350 may prevent the flexible display 1130 from being damaged by a force transmitted therefrom when the sliding plate 1120 is moved.

The cross-sectional structure 1305 for line E-E' in FIG. 13 may include, for example, a flexible display 1130 , a transparent cover 45 , an optically transparent adhesive member 46 , and a support sheet 1350 . there is. The flexible display 1130 may be coupled to the transparent cover 45 using an optically transparent adhesive member 46 (eg, optical clear adhesive (OCA), optical clear resin (OCR), or super view resin (SVR)). can The transparent cover 45 (eg, a window) may cover the flexible display 1130 to protect the flexible display 1130 from the outside. The transparent cover 45 may be implemented in the form of a thin film having flexibility (eg, a thin film layer). For example, the transparent cover 45 may include a plastic film (eg, polyimide film) or thin glass (eg, ultra thin glass). According to various embodiments, the transparent cover 45 may include a plurality of layers. For example, the transparent cover 45 may have a form in which various coating layers are disposed on a plastic film or thin glass. For example, the transparent cover 45, at least one protective layer or coating layer comprising a polymer material (eg, PET (polyester), PI (polyimide), or TPU (thermoplastic polyurethane)) is a plastic film or thin glass It may be in the form arranged in .

According to an embodiment, the flexible display 1130 may include a display panel 41 , a base film 42 , a lower panel 43 , or an optical layer 44 . The display panel 41 may be positioned between the optical layer 44 and the base film 42 . The base film 42 may be positioned between the display panel 41 and the lower panel 43 . The optical layer 44 may be positioned between the optically transparent adhesive member 46 and the display panel 41 . An adhesive member of various polymers between the display panel 41 and the base film 42 , between the base film 42 and the lower panel 43 , and/or between the display panel 41 and the optical layer 44 . (not shown) may be disposed.

According to an embodiment, the display panel 41 includes a light emitting layer 41a, a thin film transistor (TFT) film 41b, and/or an encapsulation (eg, thin-film encapsulation (TFE)) 41c). may include The light emitting layer 41a may include, for example, a plurality of pixels implemented as light emitting devices such as OLEDs or micro LEDs. The light emitting layer 41a may be disposed on the TFT film 41b through organic material evaporation. The TFT film 41b may be positioned between the light emitting layer 41a and the base film 42 . The TFT film 41b may refer to a structure in which at least one TFT is disposed on a flexible substrate (eg, a PI film) through a series of processes such as deposition, patterning, and etching. The at least one TFT may control the current to the light emitting device of the light emitting layer 41a to turn on or off the pixel or adjust the brightness of the pixel. The at least one TFT may be implemented as, for example, an amorphous silicon (a-Si) TFT, a liquid crystalline polymer (LCP) TFT, a low-temperature polycrystalline oxide (LTPO) TFT, or a low-temperature polycrystalline silicon (LTPS) TFT. can The display panel 41 may include a storage capacitor, wherein the storage capacitor maintains a voltage signal to the pixel, maintains the voltage applied to the pixel within one frame, or changes the gate voltage of the TFT due to leakage during the light emission time can reduce By a routine (eg, initialization, data write) for controlling at least one TFT, the storage capacitor may maintain the voltage applied to the pixel at a predetermined time interval. According to an embodiment, the display panel 41 may be implemented based on an OLED, and the encapsulation layer 41c may cover the light emitting layer 41a. Organic materials and electrodes that emit light in OLEDs are very sensitive to oxygen and/or moisture and may lose their luminescent properties. The encapsulation layer 41c may seal the light emitting layer 41a so that oxygen and/or moisture do not penetrate into the OLED.

According to an embodiment, the base film 42 may include a flexible film formed of a material such as polyimide or polyester (PET). The base film 42 may serve to support and protect the display panel 41 . According to some embodiments, the base film 42 may be referred to as a protective film, a back film, or a back plate.

According to an embodiment, the lower panel 43 may include a plurality of layers for various functions. An adhesive member (not shown) of various polymers may be disposed between the plurality of layers. According to an embodiment, the lower panel 43 may include a light blocking layer 43a, a buffer layer 43b, or a lower layer 43c. The light blocking layer 43a may be positioned between the base film 42 and the buffer layer 43b. The buffer layer 43b may be positioned between the light blocking layer 43a and the lower layer 43c. The light blocking layer 43a may block at least a portion of light incident from the outside. For example, the light blocking layer 43a may include an emboss layer. The embossed layer may be a black layer comprising an uneven pattern. The buffer layer 43b may mitigate an external shock applied to the flexible display 1130 . For example, the buffer layer 43b may include a sponge layer or a cushion layer. The lower layer 43c may diffuse, disperse, or radiate heat generated in the electronic device 1100 or the flexible display 1130 . The lower layer 43c may absorb or shield electromagnetic waves. The lower layer 43c may mitigate an external shock applied to the electronic device 1100 or the flexible display 1130 . For example, the lower layer 43c may include a composite sheet 43d or a copper sheet 43e. According to an embodiment, the composite sheet 43d may be a sheet processed by combining layers or sheets having different properties. For example, the composite sheet 43d may include at least one of polyimide and graphite. The composite sheet 43d may be replaced with a single sheet including one material (eg, polyimide, or graphite). The composite sheet 43d may be positioned between the buffer layer 43b and the copper sheet 43e. The copper sheet 43e may be replaced with various other metal sheets. According to various embodiments, at least a portion of the lower layer 43c is a conductive member (eg, a metal plate), which may help to reinforce rigidity of the electronic device 1100 , shield ambient noise, and radiate ambient heat. It can be used to dissipate heat emitted from components (eg display driving circuits (eg DDI)). The conductive member is, for example, at least one of copper (Cu (copper)), aluminum (Al (aluminum)), SUS (stainless steel), or CLAD (eg, a stacked member in which SUS and Al are alternately disposed) may include The lower layer 43c may include various layers for various other functions.

According to various embodiments (not shown), at least one additional polymer layer (eg, a layer including PI, PET, or TPU) other than the base film 42 may be further disposed on the rear surface of the display panel 41 . According to various embodiments, at least one of the plurality of layers included in the lower panel 43 (eg, the light blocking layer 43a, the buffer layer 43b, the composite sheet 43d, and the copper sheet 43e) is omitted. it might be According to various embodiments, the arrangement order of the plurality of layers included in the lower panel 43 is not limited to the embodiment of FIG. 13 and may be variously changed.

Optical layer 44 may include, for example, a polarizing layer (or polarizer), or a retardation layer (or retarder). The polarization layer and the phase delay layer can improve the outdoor visibility of the screen. According to an embodiment, the optical layer 44 may selectively pass light generated from the light source of the display panel 41 and vibrating in a predetermined direction. According to various embodiments, a single layer in which the polarization layer and the retardation layer are combined may be provided, and this layer may be defined as a 'circular polarization layer'. The optically transparent adhesive member 46 may be positioned between the transparent cover 45 and the optical layer 44 . According to various embodiments, the polarization layer (or the circular polarization layer) may be omitted, and in this case, a black pixel define layer (PDL) and/or a color filter may be provided to replace the polarization layer.

According to an embodiment, the electronic device 1100 may include a touch sensing circuit (eg, a touch sensor) (not shown). The touch sensing circuit may be implemented as a transparent conductive layer (or film) based on various conductive materials such as indium tin oxide (ITO). According to an embodiment, the touch sensing circuit may be disposed between the transparent cover 45 and the optical layer 44 (eg, an add-on type). According to another embodiment, the touch sensing circuit may be disposed between the optical layer 44 and the display panel 41 (eg, on-cell type). According to another embodiment, the display panel 41 may include a touch sensing circuit or a touch sensing function (eg, in-cell type). According to various embodiments, the display panel 41 may be based on an OLED and may include an encapsulation layer 41c disposed between the light emitting layer 41a and the optical layer 44 . For example, the encapsulation layer 41c may serve as a pixel protection layer for protecting the plurality of pixels of the light emitting layer 41a. According to various embodiments (not shown), the flexible display 1130 is a metal mesh (metal mesh) as a touch sensing circuit disposed in the encapsulation layer 41c between the encapsulation layer 41c and the optical layer 44 , for example: conductive patterns such as aluminum metal mesh). For example, in response to bending of the flexible display 1130 , the metal mesh may have greater durability than a transparent conductive layer implemented with ITO. According to various embodiments, the flexible display 1130 may further include a pressure sensor (not shown) capable of measuring the intensity (pressure) of the touch.

According to various embodiments, a plurality of layers included in the display panel 41 or the lower panel 43, a stacking structure thereof, or a stacking order may vary. According to various embodiments, the flexible display 1130 may be implemented by omitting some of the components or adding other components according to its provision form or convergence trend.

According to an embodiment, the support sheet 1350 may cover at least a portion of the lower panel 43 of the flexible display 1130 and be attached to the rear surface of the lower panel 43 . The support sheet 1350 may be formed of various metal materials and/or non-metal materials (eg, a polymer). According to an embodiment, the support sheet 1350 may include stainless steel. According to another embodiment, the support sheet 1350 may include engineering plastic. According to some embodiments, the support sheet 1350 may be implemented integrally with the flexible display 1130 .

According to an embodiment, the support sheet 1350 overlaps at least a portion of a portion on which the flexible display 1130 is bent (eg, the second region ②, the second curved portion S3 of FIG. 11 or 12 ). It may include a lattice structure. The grating structure may include, for example, a plurality of openings (or slits) 1351 . For example, the plurality of openings 1351 may be periodically formed, have substantially the same shape, and may be repeatedly arranged at regular intervals. The grid structure may contribute to the flexibility of the second region ②, and the second region ② may be more flexible than the first region ① due to the grid structure. The grid structure is not limited to the embodiment shown in FIG. 13 and may be implemented in various other forms. According to various embodiments, the support sheet 1350 may include a recess pattern (not shown) including a plurality of recesses, replacing the lattice structure. According to various embodiments, the grid structure or recess pattern contributing to the flexibility of the flexible display 1130 may extend to at least a portion of the first flat portion S1 of the screen S shown in FIG. 11 or 12 . According to various embodiments, the support sheet 1350 including a lattice structure or a recess pattern or a conductive member corresponding thereto may be formed of a plurality of layers.

According to an embodiment, the support sheet 1350 may make elements (eg, the multi-bar structure 1360 ) located inside the electronic device 1100 substantially invisible through the flexible display 1130 . For example, the lattice structure of the support sheet 1350 corresponding to the second region ② includes a plurality of openings 1351 , but the multi-bar structure 1360 is substantially invisible through the flexible display 1130 . It is possible to transmit a level of light that does not According to various embodiments, the lattice structure of the support sheet 1350 corresponding to the second region (②) includes a plurality of openings 1351 , but the plurality of bars of the multi-bar structure 1360 are formed in the flexible display 1130 . It is also possible to prevent the appearance of protruding through the .

According to one embodiment, the multi-bar structure 1360 includes a third side 1361 facing the support sheet 1350 , and a fourth side 1362 located opposite the third side 1361 . can do. In a state change of the electronic device 1100 , the multi-bar structure 1360 may be moved together with the sliding plate 1120 and the flexible display 1130 . The state change of the electronic device 1100 may include, for example, a transition between a closed state and an open state, a transition between a closed state and an intermediate state, or a transition between an intermediate state and an open state. For example, the multi-bar structure 1360 may be coupled to the support sheet 1350 , and an adhesive material may be positioned between the third surface 1361 and the support sheet 1350 . For example, the multi-bar structure 1360 may be connected to the sliding plate 1120 . The fourth surface 1362 of the multi-bar structure 1360 may include a form in which a plurality of bars (not shown) extending in the direction of the rotation axis of the rotation module 20 (eg, the y-axis direction) are arranged. can The multi-bar structure 1360 may have flexibility due to, for example, portions having a relatively thin thickness between the plurality of bars. According to some embodiments, the multi-bar structure 1360 may be implemented without portions connecting the plurality of bars, and the plurality of bars may be attached to the support sheet 1350 using an adhesive material. According to some embodiments, the support sheet 1350 and the multi-bars may be implemented as an integral structure. In various embodiments, the multi-bar structure 1360 may be referred to by other terms, such as a 'flexible track'. In the closed state of FIG. 11 or the open state of FIG. 12 , at least a part of the multi-bar structure 1360 is positioned to overlap the screen S (see FIG. 11 or 12 ), and the second area of the flexible display 1130 ( ②) may support the second region (②) so that it is maintained in a shape that is smoothly connected to the first region (①) of the flexible display 1130 without lifting. The multi-bar structure 1360 can contribute movably while maintaining a shape in which the second region ② is smoothly connected to the first region ① without lifting in the transition between the closed state of FIG. 11 and the open state of FIG. 12 . there is. In some embodiments, the electronic device 1100 may include various other types of display support structures capable of supporting the flexible display 1130 by replacing the multi-bar structure 1360 .

According to an embodiment, the second support member 1320 may include a first guide rail 1321 . The third support member 1330 may include a second guide rail (not shown). One edge of the sliding plate 1120 and one edge of the multi-bar structure 1360 are inserted into the first guide rail 1321, the other edge of the sliding plate 1120 and the other edge of the multi-bar structure 1360 are the first 2 Can be inserted into the guide rail. The sliding plate 1120 and the multi-bar structure 1360 may be guided and moved by the first guide rail 1321 and the second guide rail.

According to one embodiment, the rotation module 20 includes a cylindrical housing 210, a shaft 220, a first bearing 310, a second bearing 320, a first cylindrical cam 410, a second cylindrical cam ( 420 , a first guide pin 430 (see FIG. 2 ), a second guide pin 440 (see FIG. 2 ), a first spring 451 , and a second spring 452 . One end 221 of the shaft 220 may be inserted into a recess or a through hole formed in the second support member 1320 , and may be fixedly fixed to the second support member 1320 . The other end 222 of the shaft 220 may be inserted into a recess or a through hole formed in the third support member 1330 , and may be fixedly fixed to the third support member 1330 . The cylindrical housing 210 may be supported by the first bearing 310 and the second bearing 320 to enable rotational movement using the shaft 220 as a rotation axis. The first support member 1310 may include a surface 1311 facing the cylindrical housing 210 of the rotation module 20 , and the surface 1311 includes a curved surface corresponding to the cylindrical housing 210 and has a cylindrical shape. It may be spaced apart from the housing 210 .

According to an embodiment, the cylindrical housing 210 may be drivably connected to the flexible display 1130 . For example, a plurality of bars formed on the fourth surface 1362 of the multi-bar structure 1360 may form a gear structure, and the first circular gear 231 and the second circular gear ( 231 ) of the cylindrical housing 210 ( 232) and may be driven. A state in which the multi-bar structure 1360 is engaged with the first circular gear 231 and the second circular gear 232 of the cylindrical housing 210 is a flexible display 1130 connected to the multi-bar structure 1360 . It is possible to reduce the transmission loss between the movement of the cylindrical housing 210 and the rotational movement of the cylindrical housing 210 . When switching from the closed state of FIG. 11 to the open state of FIG. 12 , the rotational movement of the cylindrical housing 210 may be converted into movement of the flexible display 1130 . When switching from the open state of FIG. 12 to the closed state of FIG. 11 , the movement of the flexible display 1130 may be converted into a rotational movement of the cylindrical housing 210 .

In an expanded state (eg, the open state of FIG. 12 ), a non-smooth screen may be provided due to lifting due to elasticity of the flexible display 1130 and/or the support sheet 1350 . According to various embodiments, to prevent this, at least one tensioning device (or tensioning structure) 1390 for the flexible display 1130 and/or the support sheet 1350 may be provided. The tension device 1390 may contribute to a smooth slide operation while maintaining the tension applied to the flexible display 1130 and the support sheet 1350 . Tensioning device 1390 may include, for example, a pulley 1391 and a belt 1392 . The pulley 1391 may be rotatably positioned on the first support member 1310 (or the support member assembly 1300 ) from the side opposite to the rotation module 20 . The rotation axis of the pulley 1391 may be parallel to the rotation axis (eg, the shaft 220) of the rotation module 20 . The belt 1392 may be drivingly connected to the pulley 1391 . One end of the belt 1392 may be connected to the sliding plate 1120 , and the other end of the belt 1392 may be connected to the support sheet 1350 . Belt 1392 may include, for example, a belt in the form of a wire or a chain. The pulley 1391 driven and connected to the belt 1392 may guide the movement of the belt 1392 and its movement direction. The tension device 1390 is not limited to the embodiment of FIG. 13 and may be provided in various other positions or numbers. The tensioning device 1390 is not limited to the embodiment of FIG. 13 and may be implemented in various other forms. For example, the tension device 1390 may apply tension to the flexible display 1130 and the support sheet 1350 using an elastic member such as a spring. When the tension by the tensioning device 1390 is in the critical range, the second area (②) of the flexible display 1130 in the closed state of FIG. 11 or the open state of FIG. 12 is smooth with the first area (①) without lifting. It can be maintained in a connected form. When the tension by the tensioning device 1390 is in the critical range, in the transition between the closed state of Fig. 11 and the open state of Fig. 12, the second region (②) has a shape that is smoothly connected with the first region (①) without lifting It can be moved while holding. When the tension by the tensioning device 1390 is in the critical range, the slide operation can be smoothly implemented in the transition between the closed state of FIG. 11 and the open state of FIG. 12 .

For example, the tension by tensioning device 1390 may be below a threshold range. In this case, the second region ② may be lifted up or may not be smoothly connected to the first region ① due to the elasticity of the flexible display 1130 and/or the elasticity of the support sheet 1350 .

For another example, the tension by the tensioning device 1390 may be greater than a threshold range. In this case, the second region (②) may be smoothly connected to the first region (①) without lifting, but it may be difficult to smoothly perform the slide operation in the transition between the closed state of FIG. 11 and the open state of FIG. . When the tension applied to the support sheet 1350 coupled with the flexible display 1130 is greater than the critical range, the load applied to the rotation axis of the pulley 1391 or the rotation axis of the rotation module 20 exceeds the threshold value. By increasing the resistance to rotation of the pulley 1391 or rotation of the rotation module 20, a smooth and smooth slide operation may be difficult.

According to various embodiments, a curved member (not shown) including a curved portion to which the belt 1392 is in contact may be disposed in place of the pulley 1391 . For example, in transition between the closed state of FIG. 11 and the open state of FIG. 12 , the belt 1392 may be slidably moved relative to the curved portion of the curved member. According to various embodiments, in order to reduce friction between the curved portion of the curved member and the belt 1392, a lubricant is disposed between the curved portion and the belt 1392, or the surface of the curved portion or the surface of the belt 1392 is coated with a lubricant. can be According to various embodiments, the curved member may be a part of the support member assembly 1300 (eg, the first support member 1310 ) or may be a separate structure coupled to the support member assembly 1300 . According to some embodiments, the pulley 1391 may be defined as a curved member rotatably implemented based on friction with the belt 1392 .

FIG. 14 illustrates a cross-sectional structure 1400 of a portion of the electronic device 1100 along line A-A' or line B-B' in FIG. 11 according to an embodiment. FIG. 15 illustrates a cross-sectional structure 1500 of a portion of an electronic device 1100 along a line C-C′ or line D-D′ in FIG. 12 according to an embodiment. 16A and 16B illustrate a first state of the rotation module 20 when the electronic device 1100 is in a closed state according to an embodiment. For example, FIG. 16A shows the first state of the rotation module 20 when the electronic device 1100 is in the closed state, when viewed from above (eg, in the -z axis direction) of the screen S, and , FIG. 16B shows a first state of the rotation module 20 when viewed from above (eg, in the z-axis direction) on the back B (or back cover 1113 ) when the electronic device 1100 is in the closed state. shows 17 illustrates a second state of the rotation module 20 when the electronic device 1100 is in an open state according to an embodiment.

14 and 15 , in an embodiment, the electronic device 1100 includes a first support member 1310 , a sliding plate 1120 , a flexible display 1130 , a support sheet 1350 , and a multi-bar structure 1360 . ), a back cover 1113 , a cylindrical housing 210 , a shaft 220 , a pulley 1391 , a belt 1392 , or a printed circuit board 1370 . The first support member 1310 may include a surface 1311 facing the cylindrical housing 210 of the rotation module 20 , and the surface 1311 includes a curved surface corresponding to the cylindrical housing 210 and has a cylindrical shape. It may be spaced apart from the housing 210 . The cylindrical housing 210 may include a circular gear 1410 . When the cross-sectional structure 1400 of FIG. 14 corresponds to the line A-A' or the cross-sectional structure 1500 of FIG. 15 corresponds to the line C-C', the circular gear 1410 is the first circular gear 231 of FIG. can When the cross-sectional structure 1400 of FIG. 14 corresponds to the line B-B' or the cross-sectional structure 1500 of FIG. 15 corresponds to the line D-D', the circular gear 1410 is the second circular gear 232 of FIG. 13 . can

According to an embodiment, the closed state of the electronic device 1100 illustrated in FIG. 14 may correspond to the first state of the rotation module 20 illustrated in FIGS. 5, 16A, or 16B . The open state of the electronic device 1100 illustrated in FIG. 15 may correspond to the second state of the rotation module 20 illustrated in FIGS. 6 or 17 .

For example, an operation in which the electronic device 1100 is switched from a closed state to an open state will be described with reference to FIGS. 5, 6, 14, 15, 16a, 16b, and 17 . When an external force is applied to the flexible display 1130 or the sliding plate 1120 coupled to the flexible display 1130, the cylindrical housing 210 rotates based on the shaft 220, and the first guide pin 430 is The second guide pin 440 may leave the first section 711 and enter the second section 712 , and the second guide pin 440 may leave the first section 721 and enter the second section 722 . The rotation module 20 switches from the first state to the second state without any external force due to the first restoring force F1 by the first spring 451 and the second restoring force F2 by the second spring 452 can be When the rotation module 20 is switched from the first state to the second state, the rotational motion of the cylindrical housing 210 is converted to movement of the flexible display 1130 due to the meshed state between the gears, and the electronic device 1100 . can be switched from a closed state to an open state.

For example, an operation in which the electronic device 1100 is switched from an open state to a closed state will be described with reference to FIGS. 5, 6, 14, 15, 16a, 16b, and 17 . When an external force is applied to the flexible display 1130 or the sliding plate 1120 coupled to the flexible display 1130 , the gear structure coupled to the flexible display 1130 (eg, the multi-bar structure 1360 of FIG. 13 ) and the gear The movement of the flexible display 1130 is caused by the meshing state between the circular gears (eg, the first circular gear 231 and the second circular gear 232 in FIG. 4 ) of the rotation module 20, for example, in the cylindrical housing ( It is converted into rotational motion of 210 , and the electronic device 1100 can be switched from an open state to a closed state. In the closed state of the electronic device 1100 , the first guide pin 430 has a first guide groove 411 . ) is located in the first section 711, the second guide pin 440 can be positioned in the second section 721 of the second guide groove 421, the first spring 451 and the second spring 452 may be in a compressed state.

18 illustrates a first state of the rotation module 20 when the electronic device 1100 is in a closed state according to various embodiments of the present disclosure. 19A or 19B illustrates a third state of the rotation module 20 when the electronic device 1100 is in an intermediate state according to an exemplary embodiment.

Referring to FIG. 18 , for example, the first guide groove 411 formed in the first cylindrical cam 410 may include a first section 711 and a second section 712 . According to an embodiment, the second section 712 may include a first recess 1800 (eg, the first recess 1011 or 1012 of FIG. 10 ). The second guide groove 421 formed in the second cylindrical cam 420 of FIG. 13 is a second recess (eg, the second rim of FIG. 10 ) formed in substantially the same manner as the first recess 1800 of FIG. 18 . set 1021 or 1022). The first guide pin 430 is positioned in the first recess 1800 of the first guide groove 411 , and the second guide pin 440 (refer to FIG. 2 ) is the second of the second guide groove 421 . When positioned in the recess, the third state of the rotation module 20 and the intermediate state of the electronic device 1100 illustrated in FIG. 19A or 19B may be maintained. The third state of the rotation module 20 may indicate a state between the first state (see FIGS. 5, 16A, or 16B) and the second state (see FIG. 6 or 17).

For example, an operation in which the electronic device 1100 is switched from the intermediate state of FIGS. 19A or 19B to the open state of FIG. 17 will be described as follows. An external force (eg, an external force in the x-axis direction of FIG. 11 ) is applied to the flexible display 1130 or the sliding plate 1120 coupled to the flexible display 1130 , so that the cylindrical housing 210 is formed with the shaft 220 as a reference. After performing a rotational motion, the first guide pin 430 may exit the first recess 1800 , and the second guide pin 440 may exit the second recess. The rotation module 20 can be switched from the third state to the second state without any external force due to the first restoring force by the first spring 451 and the second restoring force by the second spring 452 . When the rotation module 20 is switched from the third state to the second state, the gear structure (eg, the multi-bar structure 1360 of FIG. 13 ) coupled to the flexible display 1130 and gears (eg, the rotation module ( 20) due to the meshing state between the circular gears (eg, the first circular gear 231 and the second circular gear 232 in FIG. 4 ), the rotational motion of the cylindrical housing 210 is converted to the movement of the flexible display 1130 . and the electronic device 1100 may be switched from an intermediate state to an open state.

For example, an operation in which the electronic device 1100 is switched from the intermediate state of FIGS. 19A or 19B to the closed state of FIG. 18 will be described as follows. When an external force (eg, an external force in the -x axis direction in FIG. 11 ) is applied to the flexible display 1130 or the sliding plate 1120 coupled to the flexible display 1130 , the gear structure coupled to the flexible display 1130 ( Example: meshing between the multi-bar structure 1360 of FIG. 13 and gears (eg, the circular gear of the rotation module 20 (eg, the first circular gear 231 and the second circular gear 232 of FIG. 4 )) Due to the state, the movement of the flexible display 1130 is converted into a rotational movement of the cylindrical housing 210, and the electronic device 1100 can be switched from the intermediate state to the closed state. In the closed state of the electronic device 1100, The first guide pin 430 is positioned in the first section 711 of the first guide groove 411 , and the second guide pin 440 is positioned in the second section 721 of the second guide groove 421 . may be, and the first state of the rotation module 20 may be maintained.

20 is a plan view of an electronic device 1100 according to an exemplary embodiment.

According to one embodiment, as in the embodiment of FIG. 10 , the second section 712 of the first guide groove 411 includes a plurality of first recesses 1011 and 1012, and the second guide groove ( The second section 722 of 421 may include a plurality of second recesses 1021 and 1022 . A first guide pin 430 is positioned in one of the plurality of first recesses 1011 , 1012 , and a second guide pin 440 is positioned in one of the plurality of second recesses 1021 , 1022 . When done, the rotation module 20 may be in a third state. In which first of the plurality of first recesses 1011 and 1012 the first guide pin 430 is located, and the second guide pin 440 is located in the plurality of second recesses 1021 and 1022 , ), the third state and the corresponding intermediate state of the electronic device 1100 are located in which second recess of can be varied. For example, when the first guide pin 430 is positioned in the first recess 1011 and the second guide pin 440 is positioned in the second recess 1021 , the screen S of the electronic device 1100 is ) may be an intermediate state in which the length corresponding to the reference numeral '2001' is enlarged. As another example, when the first guide pin 430 is positioned in the first recess 1012 and the second guide pin 440 is positioned in the second recess 1022 , the screen ( S) may be an intermediate state in which the length corresponding to '2002' is enlarged. In an intermediate state of the electronic device 1100 , the size of the screen S may vary based on recesses in which the first guide pin 430 and the second guide pin 440 are positioned.

21A, 21B, 22A, and 22B are perspective views of an electronic device 2100 according to an exemplary embodiment. FIG. 23 shows a schematic cross-sectional structure 2300 of the electronic device 2100 in the screen reduced state shown in FIG. 21A or 21B . FIG. 24 shows a schematic cross-sectional structure 2400 of the electronic device 2100 in the screen expanded state shown in FIG. 22A or 22B.

21A , 21B , 22A , and 22B , in an embodiment, the electronic device 2100 may include a housing 2110 , a flexible display 2130 , and a rotation module 20 . The screen reduced state illustrated in FIGS. 21A or 21B may be, for example, a state in which the flexible display 2130 is maximally retracted into the inner space of the housing 2110 . The screen extended state illustrated in FIGS. 22A or 22B may be, for example, a state in which the flexible display 2130 is maximally drawn out of the housing 2110 . Although not shown, the electronic device 2100 may be in an intermediate state between the screen reduced state of FIGS. 21A or 21B and the screen extended state of FIGS. 22A or 22B . The screen in the intermediate state (not shown) may have a size larger than the screen 2131 in the reduced screen and smaller than the screen 2132 in the expanded screen. In the reduced screen state or the intermediate state, the flexible display 2130 may be disposed on the rotation module 20 in a bent state or a rolled state in the internal space of the electronic device 2100 . In an embodiment, the flexible display 2130 may be referred to as a rollable display. The rotation module 20 includes a cylindrical housing 210, a shaft 220, a first cylindrical cam 410 including a first guide groove 411, and a second cylindrical cam including a second guide groove 421 ( 420 , a first guide pin 430 , a second guide pin 440 , a first spring 451 , a second spring 452 , a first bearing 310 (see FIG. 4 ), a second bearing 320 . ) (see FIG. 4 ), a first circular gear 231 , and/or a second circular gear 232 .

4, 21a, 21b, 22a, and 22b, in one embodiment, one end 221 and the other end 222 of the shaft 220 included in the rotation module 20 is a housing 2110 or It may be combined with a support structure (eg, the support structure 500 of FIG. 5 ) connected to the housing 2110 inside the electronic device 2100 . The cylindrical housing 210 of the rotation module 20 may be drivably connected to the flexible display 2130 .

For example, the electronic device 2100 may include a support sheet disposed or coupled to the rear surface of the flexible display 2130 (eg, the support sheet 1350 of FIG. 13 ). According to various embodiments, the display assembly including the flexible display 2130 and the support sheet may include the cross-sectional structure 1305 shown in FIG. 13 . The driving connection state between the flexible display 2130 and the rotation module 20 may refer to a state in which the support sheet and the cylindrical housing 210 of the rotation module 20 are substantially connected. The support sheet may contribute to durability of the flexible display 2130 . The support sheet may reduce the effect of a load or stress that may occur in the transition between the screen reduced state and the screen expanded state on the flexible display 2130 .

According to various embodiments, a gear structure coupled to the flexible display 2130 (eg, the multi-bar structure 1360 of FIG. 13 ) may be included. The gear structure may be in a state of meshing with a circular gear (eg, the first circular gear 231 and the second circular gear 232 of FIG. 2 ) of the rotation module 20 . Due to the meshing state between the gear structure and the circular gear, a driving connection state in which motion or force can be transmitted while reducing loss between the flexible display 2130 and the rotation module 20 may be formed.

For example, with reference to FIGS. 5, 6, 21a, 21b, 22a, and 22b, an operation in which the electronic device 2100 switches from the screen reduced state to the screen expanded state will be described as follows. An external force is applied to the flexible display 2130 or a support member (not shown) that is coupled to the flexible display 2130 and supports sliding with respect to the housing 2110 , so that the cylindrical housing 210 rotates based on the shaft 220 . , the first guide pin 430 exits the first section 711 and enters the second section 712 , and the second guide pin 440 leaves the first section 721 and enters the second section 722 . ) can be entered. The rotation module 20 is shown in the first state of FIG. 5 without any external force due to the first restoring force F1 by the first spring 451 and the second restoring force F2 by the second spring 452 in FIG. can be switched to the second state of When the rotation module 20 is switched from the first state to the second state, the gear structure (eg, the multi-bar structure 1360 of FIG. 13 ) coupled to the flexible display 2130 and gears (eg, the rotation module ( 20) due to the meshing state between the circular gears (eg, the first circular gear 231 and the second circular gear 232 of FIG. 4 ), the rotational motion of the cylindrical housing 210 is converted into the movement of the flexible display 2130 . and the electronic device 2100 may be switched from the screen reduced state to the screen extended state.

For example, with reference to FIGS. 5, 6, 21a, 21b, 22a, and 22b, an operation in which the electronic device 2100 switches from an expanded screen state to a screen reduced state will be described as follows. When an external force is applied to the flexible display 2130 or a support member (not shown) that is coupled to the flexible display 2130 and supports sliding with respect to the housing 2110, a gear structure coupled to the flexible display 2130 (eg, FIG. Due to the meshing state between the multi-bar structure 1360 of 13) and the gears (eg, the circular gear of the rotation module 20 (eg, the first circular gear 231 and the second circular gear 232 of FIG. 4 )) The movement of the flexible display 2130 may be converted into a rotational movement of the cylindrical housing 210, and the electronic device 2100 may be converted from the screen expanded state to the screen reduced state. When converted to the reduced state, at least a portion of the flexible display 2130 may be introduced into the inner space of the housing 2110 while being rolled in the cylindrical housing 210 that rotates. When it is drawn into the inner space of the housing 2110 in a state of being rolled around the housing 210 , the rotation module 20 may be in the first state of Fig. 5. In the reduced screen state of the electronic device 2100, the first The guide pin 430 may be positioned in the first section 711 of the first guide groove 411 , and the second guide pin 440 may be positioned in the second section 721 of the second guide groove 421 . and the compressed state of the first spring 451 and the compressed state of the second spring 452 may be maintained. According to some embodiments, the screen reduction state of the electronic device 2100 and the second state of the rotation module 20 may be maintained. In the first state, the flexible display 2130 may be implemented so that it is not exposed to the outside.

According to another embodiment, the rotation module 20 is in the second state of FIG. 6 in the reduced screen state of the electronic device 2100 illustrated in FIGS. 21A, 21B, and 23 , and is shown in FIGS. 22A, 22B, and 24 . It may also be implemented so that it is in the first state of FIG. 5 in the screen expanded state of the electronic device 2100 . For example, referring to FIGS. 5, 6, 21a, 21b, 22a, 22b, 23, and 24, the first restoring force and the second spring 452 to be restored to the uncompressed state of the first spring 451 are non-compressed. Due to the second restoring force to be restored to the compressed state, the rotation module 20 may be switched from the first state to the second state. When the rotation module 20 is switched from the first state to the second state, the cylindrical housing 210 may rotate based on the shaft 220 . Due to the rotational movement of the cylindrical housing 210, at least a portion of the flexible display 2130 may be drawn into the inner space of the housing 2110 while being rolled in the rotationally moving cylindrical housing 210, and thereby, the electronic device ( 2100) may be switched from the screen extended state to the screen reduced state.

According to some embodiments, the cylindrical housing 210 of the rotation module 20 may be driven and connected to the flexible display 2130 without the first circular gear 231 and the second circular gear 232 of FIG. 13 . For example, the flexible display 2130 or the support sheet (eg, the support sheet 1350 of FIG. 13 ) may be coupled to the cylindrical housing 210 . In this case, the multi-bar structure 1360 of FIG. 13 may be omitted.

According to an embodiment of the present disclosure, the electronic device (eg, the electronic device 1100 of FIG. 11 or the electronic device 2100 of FIG. 21A ) includes a housing (eg, the housing 1110 of FIG. 11 , or the housing of FIG. 21A ). (2110)). The electronic device may include a flexible display (eg, the flexible display 1130 of FIG. 11 or the flexible display 2130 of FIG. 21A ) that is at least partially withdrawable from the inner space of the housing. The electronic device may include a rotation module (eg, the rotation module 20 of FIG. 2 ) for moving the flexible display. The rotation module includes one end (eg, one end 221 in FIG. 3 ) and the other end (eg, in FIG. 3 ) coupled to a support member (eg, the support structure 500 of FIG. 5 ) included in the electronic device. It may include a shaft (eg, the shaft 220 of FIG. 3 ) including the other end 222). The rotation module may include a cylindrical housing (eg, the cylindrical housing 210 of FIG. 2 ) drivably connected to the flexible display. The cylindrical housing may be rotatable about the shaft. The rotation module may include a pair of cylindrical cams (eg, the first cylindrical cam 410 or the second cylindrical cam 420 of FIG. 2 ) positioned to be symmetrical with each other with respect to the center of the shaft. The pair of cylindrical cams may be passed through by the shaft and accommodated in the cylindrical housing, and may be capable of linear motion on the shaft. The rotation module may include a pair of guide pins (eg, the first guide pin 430 or the second guide pin 440 of FIG. 2 ). Each of the pair of guide pins is formed on a cylindrical surface of each of the pair of cylindrical cams and is provided with a pair of guide grooves symmetrical to each other with respect to the center of the shaft (eg, the first guide groove 411 in FIG. 2 ) or It may be positioned to correspond to the second guide groove 421). The rotation module may include a pair of springs (eg, the first spring 451 or the second spring 452 of FIG. 2 ) symmetrical to each other with respect to the center of the shaft. Each of the pair of springs may be accommodated in the cylindrical housing, and may elastically support each of the pair of cylindrical cams.

According to an embodiment of the present invention, the pair of guide pins (eg, the first guide pin 430 or the second guide pin 440 in FIG. 2 ) and the pair of guide grooves (eg, in FIG. 2 ) Due to the interaction between the first guide groove 411 or the second guide groove 421 ), the rotational movement of the cylindrical housing (eg, the cylindrical housing 210 in FIG. 2 ) and the pair of cylindrical cams ( Example: There may be a transition between the linear motion of the first cylindrical cam 410 or the second cylindrical cam 420 of FIG. 2 .

According to an embodiment of the present invention, the rotation module (eg, the rotation module 20 of FIG. 2 ) includes the cylindrical housing (eg, the cylindrical housing 210 of FIG. 2 ) and the shaft (eg, the shaft of FIG. 2 ) 220 ) may further include a pair of bearings (eg, the first bearing 310 or the second bearing 320 of FIG. 2 ). Each of the pair of springs (eg, the first spring 451 or the second spring 452 of FIG. 2 ) is the pair of cylindrical cams (eg, the first cylindrical cam 410 or the second spring of FIG. 2 ). The cylindrical cam 420) may be positioned between each and each of the pair of bearings.

According to an embodiment of the present invention, each of the pair of guide pins (eg, the first guide pin 430 or the second guide pin 440 in FIG. 2 ) is coupled to the cylindrical housing (eg, in FIG. 2 ) in a bolted manner. 2 may be coupled to a pair of holes formed in the cylindrical housing 210 (eg, the first fastening hole 216 or the second fastening hole 217 of FIG. 3 ), respectively.

According to an embodiment of the present invention, each of the pair of guide grooves (eg, the first guide groove 411 or the second guide groove 421 in FIG. 5 ) is the cylindrical surface of each of the pair of cylindrical cams. A first section extending in the circumferential direction along a second section 712 or 722).

According to an embodiment of the present invention, the second section (eg, the second section 712 or 722 in FIG. 5 ) may have a substantially straight shape when each of the pair of guide grooves is spread out and represented in a plane. There is (see Figure 7).

According to an embodiment of the present invention, the second section (eg, the second section 712 or 722 of FIG. 5 ) has a slope that gradually increases or , may include a curved shape in which the slope gradually decreases (see FIG. 8 or 9 ).

According to an embodiment of the present invention, the second section (eg, the second section 712 or 722 in FIG. 5 ) is in the form of a groove in the direction toward each of the pair of springs in each of the pair of cylindrical cams may include at least one recess (eg, a plurality of first recesses 1011 and 1012 or a plurality of second recesses 1021 and 1022 of FIG. 10 ).

According to an embodiment of the present invention, the rotation module (eg, the rotation module 20 of FIG. 2 ) has a cylindrical outer surface (eg, the cylinder of FIG. 3 ) of the cylindrical housing (eg, the cylindrical housing 210 of FIG. 2 ). It may further include at least one or more circular gears (eg, the first circular gear 231 or the second circular gear 232 of FIG. 3 ) formed on the outer surface 215 ). The circular gear may be meshed with a gear structure located on the rear surface of the flexible display (eg, the flexible display 1130 of FIG. 13 ). According to an embodiment, the gear structure may include a multi-bar structure (eg, the multi-bar structure 1360 of FIG. 13 ).

According to an embodiment of the present invention, at least a part of the flexible display (eg, the flexible display 2130 of FIG. 21A ) is to be located in the internal space of the electronic device (eg, the electronic device 2100 of FIG. 21A ). In this case, the cylindrical housing (eg, the cylindrical housing 210 of FIG. 2 ) may be disposed in a rolled state.

According to an embodiment of the present disclosure, the electronic device (eg, the electronic device 1100 of FIG. 13 ) has a sliding plate (eg, FIG. 13 ) that can slide out with respect to the housing (eg, the housing 1110 of FIG. 11 ). of the sliding plate 1120) may be further included. The flexible display (eg, the flexible display 1130 of FIGS. 11, 12, or 13) has a first region (eg, the first region (①) of FIGS. 11, 12, or 13 arranged to overlap at least partially on the sliding plate. )) may be included. The flexible display may include a second area extending from the first area (eg, the second area (②) of FIG. 11 , 12 , or 13 ). The second region may be drivably connected to the cylindrical housing.

According to an embodiment of the present disclosure, the electronic device (eg, the electronic device 1100 of FIG. 13 ) may further include a tension device (eg, the tension device 1390 of FIG. 13 ). The tension device may be connected to the second region (eg, the second region (②) of FIG. 13 ) and apply tension to the flexible display.

According to an embodiment of the present invention, the tensioning device (eg, tensioning device 1390 of FIG. 13 ) is spaced apart from the shaft (eg, shaft 220 of FIG. 14 or 15 ) and the housing (eg, tensioning device 1390 of FIG. 11 ). It may include a curved member (eg, the pulley 1391 of FIG. 13 ) located in the inner space of the housing 1110 ). The tensioning device may include a belt (eg, belt 1392 in FIG. 13 ). The belt is positioned in the inner space of the housing corresponding to the curved member, one end is connected to the sliding plate (eg, the sliding plate 1120 of FIG. 14 or 15), and the other end is connected to the flexible display (eg, FIG. 14 or 15 of the flexible display 1130) may be connected.

According to an embodiment of the present invention, the rotation module (eg, the rotation module 20 of FIG. 2 ) includes a shaft (eg, the shaft 220 of FIG. 2 ), a cylindrical housing capable of rotational movement around the shaft ( Example: the cylindrical housing 210 of FIG. 2), a cylindrical cam penetrated by the shaft and accommodated in the cylindrical housing, and capable of linear motion on the shaft (eg, the first cylindrical cam 410 or the second Cylindrical cam 420), a guide coupled to the cylindrical housing and corresponding to a guide groove formed on the cylindrical surface of the cylindrical cam (eg, the first guide groove 411 or the second guide groove 421 in FIG. 2) A pin (eg, the first guide pin 430 or the second guide pin 440 in FIG. 2) and a spring accommodated in the cylindrical housing and elastically supporting the cylindrical cam (eg, the first spring ( 451) or a second spring 452). Due to the interaction between the guide pin and the guide groove, there may be a translation between the rotational motion of the cylindrical housing and the linear motion of the cylindrical cam.

According to an embodiment of the present invention, it further includes a bearing (eg, the first bearing 310 or the second bearing 320 of FIG. 2 ) positioned between the cylindrical housing and the shaft, wherein the spring includes the It may be positioned between the cylindrical cam and the bearing.

According to an embodiment of the present invention, the guide pin may be coupled to a hole (eg, the first fastening hole 216 or the second fastening hole 217 of FIG. 3 ) formed in the cylindrical housing by a bolt fastening method. there is.

According to an embodiment of the present invention, the guide groove includes a first section extending in a circumferential direction along the cylindrical surface of the cylindrical cam (eg, a first section 711 or 721 in FIG. 5 ) and the first section and a second section (eg, second section 712 or 722 of FIG. 5 ) extending spirally along the cylindrical surface from the section.

According to an embodiment of the present invention, the second section may include a curved shape in which the inclination is gradually increased or the inclination is gradually decreased when the guide groove is unfolded and expressed as a plane.

According to an embodiment of the present invention, the second section includes at least one recess (eg, a plurality of first recesses 1011 and 1012 in FIG. ) or a plurality of second recesses 1021 and 1022).

The embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples in order to easily explain the technical contents according to the embodiments of the present invention and help the understanding of the embodiments of the present invention, and limit the scope of the embodiments of the present invention It's not what you want to do. Therefore, in the scope of various embodiments of the present invention, in addition to the embodiments disclosed herein, all changes or modifications derived from the technical ideas of various embodiments of the present invention should be interpreted as being included in the scope of various embodiments of the present invention. .

20: rotation module
210: cylindrical housing
211: first opening
212: second opening
213: hollow
231: first circular gear
232: second circular gear
220: shaft
310: first bearing
320: second bearing
410: first cylindrical cam
411: first guide groove
420: second cylindrical cam
421: second guide groove
430: first guide pin
440: second guide pin
451: first spring
452: second spring

Claims (20)

In an electronic device,
housing;
a flexible display that is at least partially withdrawable from the inner space of the housing; and
and a rotation module for moving the flexible display,
The rotation module,
a shaft including one end and the other end coupled to a support member included in the electronic device;
a cylindrical housing connected to the flexible display and rotatable about the shaft;
a pair of cylindrical cams penetrated by the shaft and accommodated in the cylindrical housing, capable of linear motion on the shaft, and positioned symmetrically with respect to the center of the shaft;
a pair of guide pins coupled to the cylindrical housing, formed on a cylindrical surface of each of the pair of cylindrical cams, and corresponding to each of a pair of guide grooves symmetrical with respect to the center of the shaft; and
and a pair of springs accommodated in the cylindrical housing, elastically supporting each of the pair of cylindrical cams, and symmetrical with respect to a center of the shaft.
The method of claim 1,
Due to the interaction between the pair of guide pins and the pair of guide grooves, there is a conversion between the rotational motion of the cylindrical housing and the linear motion of the pair of cylindrical cams.
The method of claim 1,
The rotation module further comprises a pair of bearings positioned between the cylindrical housing and the shaft,
Each of the pair of springs is positioned between each of the pair of cylindrical cams and each of the pair of bearings.
The method of claim 1,
Each of the pair of guide pins,
An electronic device coupled to each of a pair of holes formed in the cylindrical housing by a bolt fastening method.
The method of claim 1,
Each of the pair of guide grooves,
a first section extending circumferentially along the cylindrical surface of each of the pair of cylindrical cams; and
and a second section helically extending along the cylindrical surface from the first section.
6. The method of claim 5,
The second section is
An electronic device having a substantially straight shape when each of the pair of guide grooves is spread out and shown in a plane.
6. The method of claim 5,
The second section is
When each of the pair of guide grooves is spread out and expressed as a plane, the electronic device includes a curved shape in which an inclination is gradually increased or an inclination is gradually decreased.
6. The method of claim 5,
The second section is
and at least one recess recessed in a direction from each of the pair of cylindrical cams toward each of the pair of springs.
The method of claim 1,
The rotation module further includes at least one or more circular gears formed on the cylindrical outer surface of the cylindrical housing,
The circular gear is an electronic device meshed with a gear structure located on a rear surface of the flexible display.
10. The method of claim 9,
The gear structure is
An electronic device comprising a multi-bar structure.
The method of claim 1,
At least a portion of the flexible display,
An electronic device disposed in a rolled state in the cylindrical housing when positioned in the internal space of the electronic device.
The method of claim 1,
Further comprising a sliding plate slideable with respect to the housing,
The flexible display,
a first region disposed to overlap at least a part of the sliding plate; and
and a second region extending from the first region and drivingly connected to the cylindrical housing.
13. The method of claim 12,
The electronic device further comprising a tension device connected to the second region and applying tension to the flexible display.
14. The method of claim 13,
The tension device is
a curved member spaced apart from the shaft and positioned in the inner space of the housing; and
and a belt positioned in the inner space of the housing to correspond to the curved member, one end connected to the sliding plate and the other end connected to the flexible display.
In the rotation module,
shaft;
a cylindrical housing capable of rotational movement around the shaft;
a cylindrical cam penetrated by the shaft and accommodated in the cylindrical housing and capable of linear motion on the shaft;
a guide pin coupled to the cylindrical housing and corresponding to a guide groove formed on a cylindrical surface of the cylindrical cam; and
and a spring accommodated in the cylindrical housing and elastically supporting the cylindrical cam,
A rotation module in which, due to the interaction between the guide pin and the guide groove, there is a conversion between the rotational motion of the cylindrical housing and the linear motion of the cylindrical cam.
16. The method of claim 15,
a bearing positioned between the cylindrical housing and the shaft;
The spring is a rotation module positioned between the cylindrical cam and the bearing.
16. The method of claim 15,
The guide pin is
A rotation module coupled to a hole formed in the cylindrical housing by a bolt fastening method.
16. The method of claim 15,
The guide groove is
a first section extending circumferentially along the cylindrical surface of the cylindrical cam; and
and a second section helically extending along the cylindrical surface from the first section.
19. The method of claim 18,
The second section is
When the guide groove is unfolded and expressed as a plane, the inclination is gradually increased, or the rotation module includes a curved shape in which the inclination is gradually reduced.
19. The method of claim 18,
The second section is
and at least one recess in the shape of a recess in a direction from the cylindrical cam toward the spring.

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