Electronic device comprising structure for reducing noise on basis of selective control of motor
The electronic device addresses noise and torque management in flexible displays by using a motor assembly with a coupler and gear system controlled by a processor, improving operational efficiency and user experience.
Patent Information
- Application Number
- PCT/KR2025/003955
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-06-26
- Filing Date
- 2025-03-27
- Publication Date
- 2025-11-27
AI Technical Summary
Electronic devices with flexible displays face challenges in reducing noise generated by motors used to change the size of the display, necessitating a structure that effectively manages motor operation based on selective control.
The electronic device incorporates a motor assembly with a first and second rotor, a coupler, and a gear assembly, controlled by a processor to separate or couple the rotors based on user input, thereby managing noise and torque selectively.
This solution effectively reduces noise and adjusts torque according to user input, enhancing the operational efficiency and user experience of flexible display devices.
Smart Images

Figure KR2025003955_27112025_PF_FP_ABST
Abstract
Description
An electronic device comprising a structure for reducing noise based on selective control of a motor
[0001] The present disclosure relates to an electronic device including a structure for reducing noise based on selective control of a motor.
[0002] There is a growing need for electronic devices capable of changing the size of their displays to provide users with a variety of content. For example, an electronic device may include a flexible display, the size of which can be changed when exposed to the outside of the device. The electronic device may include a motor driven to change the size of the display. To meet user needs, the electronic device may require a structure that reduces noise generated by the motor based on selective control of the motor.
[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.
[0004] An electronic device is disclosed. The electronic device may include a housing comprising a first housing part and a second housing part movably coupled with respect to the first housing part. The electronic device may include a motor assembly disposed within the housing, the motor assembly comprising a first motor comprising a first rotor, a second motor comprising a second rotor, and a coupler disposed between the first motor and the second motor and configured to selectively couple the first rotor and the second rotor. The electronic device may include a gear assembly coupled with the first rotor and configured to move the second housing part with respect to the first housing part in response to driving of the motor assembly. The electronic device may include at least one processor comprising a processing circuit and a memory comprising one or more storage media storing instructions. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler such that the operation of the first rotor and the operation of the second rotor are separated or coupled, depending on at least one of a state of the electronic device or a user input.
[0005] An electronic device is disclosed. The electronic device may include a housing comprising a first housing part and a second housing part movably coupled to the first housing part. The electronic device may include a motor assembly disposed within the housing, the motor assembly comprising a first motor comprising a first rotor configured to move the second housing part relative to the first housing part, a second motor comprising a second rotor, and a coupler disposed between the first motor and the second motor and configured to selectively couple the first rotor and the second rotor. The electronic device may include at least one processor comprising a processing circuit, and a memory comprising one or more storage media storing instructions. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to separate the first rotor and the second rotor based on identifying a first user input for reducing noise generated from the motor assembly. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to couple the first rotor and the second rotor based on identifying a second user input for increasing torque of the first rotor.
[0006] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.
[0007] FIG. 2A is a top plan view of an exemplary electronic device in a first state.
[0008] FIG. 2b is a bottom view of an exemplary electronic device in a first state.
[0009] Figure 2c is a plan view of an exemplary electronic device within a second state.
[0010] FIG. 2d is a bottom view of an exemplary electronic device within a second state.
[0011] Figures 3a and 3b are exploded perspective views of an exemplary electronic device.
[0012] FIG. 4A is a cross-sectional view of an exemplary electronic device in a first state.
[0013] FIG. 4b is a cross-sectional view of an exemplary electronic device in a second state.
[0014] Figure 5a illustrates a portion of an exemplary electronic device.
[0015] FIG. 5b is a cross-sectional view of the driving part of an exemplary electronic device taken along line A-A' of FIG. 5a.
[0016] Figure 5c illustrates the driving unit of an exemplary electronic device.
[0017] FIG. 5d is a perspective view of the driving unit of an exemplary electronic device.
[0018] Fig. 6a illustrates a driving unit of an exemplary electronic device.
[0019] FIG. 6b is an exploded view of the driving unit of the exemplary electronic device of FIG. 6a.
[0020] Figure 6c is a block diagram of a driving unit of an exemplary electronic device.
[0021] Figure 7 is a circuit diagram for selective control of a motor assembly of an exemplary electronic device.
[0022] Figures 8a, 8b, and 8c are flow charts of exemplary electronic devices for selective control of a motor assembly.
[0023] Figures 9a, 9b, 9c, and 9d illustrate couplers of a motor assembly of an exemplary electronic device.
[0024] Fig. 10 illustrates a driving unit of an exemplary electronic device.
[0025] Figure 11 is a plan view of an exemplary electronic device showing a screen for selective control of a motor assembly.
[0026] Figure 12 is a graph showing the torque transmitted to the gear assembly according to the rotational angle of the rotor of the motor assembly.
[0027] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.
[0028] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).
[0029] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.
[0030] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.
[0031] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).
[0032] 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).
[0033] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).
[0034] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can 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 can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.
[0035] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.
[0036] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).
[0037] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can 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, a temperature sensor, a humidity sensor, or an illuminance sensor.
[0038] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one 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.
[0039] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).
[0040] The haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
[0041] The camera module (180) can capture still images and moving images. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.
[0042] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
[0043] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.
[0044] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).
[0045] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.
[0046] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., 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), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).
[0047] According to various embodiments, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.
[0048] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).
[0049] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.
[0050] FIG. 2A is a top plan view of an exemplary electronic device (101) in a first state.
[0051] Referring to FIG. 2A, the electronic device (101) may include a first housing (210), a housing (200) including a second housing (220) movable relative to the first housing (210) in a first direction (261) parallel to the y-axis or a second direction (262) parallel to the y-axis and opposite to the first direction (261), and a display (230) (e.g., the display).
[0052] For example, the electronic device (101) may be in the first state. For example, within the first state, the second housing (220) may be movable relative to the first housing (210) in a first direction (261) among the first direction (261) and the second direction (262). For example, within the first state, the second housing (220) may not be movable relative to the first housing (210) in a second direction (262) opposite to the first direction (261).
[0053] For example, within the first state, the display (230) may provide the display area having the smallest size. For example, within the first state, the display area may correspond to the area (230a). For example, although not shown in FIG. 2A, within the first state, the area (230a), which is the display area, and another area of the display (230) (e.g., area (230b) of FIG. 2C) may be located within the first housing (210). For example, within the first state, the area may be covered by the first housing (210). For example, within the first state, the area may be rolled into the first housing (210). For example, within the first state, the area (230a) may include a planar portion, unlike the area including a curved portion. However, the present invention is not limited thereto. For example, the region (230a) may include a curved portion extending from the planar portion and positioned within the edge portion, within the first state.
[0054] For example, the first state may be referred to as a slide-in state or a closed state in that at least a portion of the second housing (220) is positioned within the first housing (210). For example, the first state may be referred to as a reduced state in that it provides the display area having the smallest size, but is not limited thereto.
[0055] For example, the first housing (210) may include a first image sensor (250-1) within the camera module (180) that is visually exposed through a portion of the area (230a) and faces in a third direction (263) parallel to the z-axis. For example, the camera module (180) may also be arranged to perform its function within the internal space of the electronic device without being visually exposed through a portion of the area (230a). For example, although not illustrated in FIG. 2A, the second housing (220) may include one or more second image sensors within the camera module (180) that are exposed through a portion of the second housing (220) and faces in a fourth direction (264) parallel to the z-axis and opposite to the third direction (263). For example, the one or more second image sensors may be exemplified through the description of FIG. 2B.
[0056] FIG. 2b is a bottom view of an exemplary electronic device in a first state.
[0057] Referring to FIG. 2B, within the first state, one or more second image sensors (250-2) disposed within the second housing (220) may be positioned within a structure disposed within the first housing (210) for the one or more second image sensors (250-2). For example, light from outside the electronic device (101) may be received by the one or more second image sensors (250-2) through the structure within the first state. For example, since the one or more second image sensors (250-2) are positioned within the structure within the first state, the one or more second image sensors (250-2) may be exposed through the structure within the first state. For example, the structure may be implemented in various ways. For example, the structure may be an opening or a notch. For example, the structure may be an opening (212a) in a plate (212) of a first housing (210) that surrounds at least a portion of a second housing (220). However, the present invention is not limited thereto. For example, in the first state, one or more second image sensors (250-2) included in the second housing (220) may be covered by the plate (212) of the first housing (210).
[0058] Referring again to FIG. 2a, the first state can be changed to the second state.
[0059] For example, the first state (or the second state) may be changed to the second state (or the first state) through one or more intermediate states between the first state and the second state.
[0060] For example, the first state (or the second state) may be changed to the second state (or the first state) based on a defined user input. For example, the first state (or the second state) may be changed to the second state (or the first state) in response to a user input to a physical button exposed through a portion of the first housing (210) or a portion of the second housing (220). For example, the first state (or the second state) may be changed to the second state (or the first state) in response to a touch input to an executable object displayed within the display area. For example, the first state (or the second state) may be changed to the second state (or the first state) in response to a touch input having a contact point on the display area and having a pressing strength greater than or equal to a reference strength. For example, the first state (or the second state) may be changed to the second state (or the first state) in response to a voice input received through a microphone of the electronic device (101). For example, the first state (or the second state) may be changed to the second state (or the first state) in response to an external force applied to the first housing (210) and / or the second housing (220) to move the second housing (220) with respect to the first housing (210). For example, the first state (or the second state) may be changed to the second state (or the first state) in response to a user input identified from an external electronic device (e.g., earbuds or a smart watch) connected to the electronic device (101). However, the present invention is not limited thereto.
[0061] The above second state can be illustrated through the description of FIG. 2c and FIG. 2d.
[0062] Figure 2c is a plan view of an exemplary electronic device within a second state.
[0063] Referring to FIG. 2C, the electronic device (101) may be in the second state. For example, in the second state, the second housing (220) may be movable relative to the first housing (210) in a second direction (262) among the first direction (261) and the second direction (262). For example, in the second state, the second housing (220) may not be movable relative to the first housing (210) in the first direction (261) opposite to the second direction (262).
[0064] For example, within the second state, the display (230) may provide the display area having the largest size. For example, within the second state, the display area may correspond to an area (230c) including an area (230a) and an area (230b). For example, an area (230b) located within the first housing (210) within the first state may be exposed outside the housing (210) within the second state. For example, within the second state, the area (230a) may include a planar portion. However, the present invention is not limited thereto. For example, the area (230a) may also include a curved portion extending from the planar portion and positioned within the edge portion. For example, within the second state, the area (230b) may include a planar portion among the planar portion and the curved portion, unlike the area (230a) within the first state. However, the present invention is not limited thereto. For example, the region (230b) may include a curved portion extending from the planar portion of the region (230b) and positioned within the edge portion.
[0065] For example, the display (230) may include a first display area (231) disposed on a second housing (220), and a second display area (232) extending from the first display area (231) and at least partially recessed within the first housing (210) or visually exposed to the outside of the electronic device (101) as the second housing (220) moves relative to the first housing (210). For example, the first display area (231) may be a portion of the display (230) that is visually exposed to the outside of the electronic device (101). The first display area (231) may be a portion that is not deformed as the second housing (220) moves relative to the first housing (210). For example, the second display area (232) may be a portion of the display (230) that is deformed as the second housing (220) moves relative to the first housing (210). The above display (230) may be referred to as a flexible display in that it includes a deformable second display area (232), but is not limited thereto.
[0066] For example, the second state may be referred to as a slide-out state or an open state in that at least a portion of the second housing (220) is positioned outside the first housing (210). For example, the second state may be referred to as an expanded state in that it provides the display area having the largest size. However, the present invention is not limited thereto.
[0067] For example, the first image sensor (250-1) facing the third direction (263) may move together with the area (230a) according to the movement of the second housing (220) in the second direction (262) when the state of the electronic device (101) changes from the first state to the second state. For example, although not shown in FIG. 2c, one or more second image sensors (250-2) facing the fourth direction (264) may move according to the movement of the second housing (220) in the second direction (262) when the state of the electronic device (101) changes from the first state to the second state. For example, the relative positional relationship between one or more second image sensors (250-2) and the structure within the first housing (210) illustrated through the description of FIG. 2b may change according to the movement of one or more second image sensors (250-2). For example, the change in the above relative position relationship can be illustrated through Fig. 2d.
[0068] FIG. 2d is a bottom view of an exemplary electronic device (101) in a second state.
[0069] Referring to FIG. 2d, within the second state, one or more second image sensors (250-2) may be positioned outside the structure (e.g., an opening or a notch) within the first housing (210) as illustrated in the description of FIG. 2b. For example, within the second state, one or more second image sensors (250-2) may be positioned outside the opening (212a) within the plate (212). For example, one or more second image sensors (250-2) may be exposed through the opening (212a) within the first state. One or more second image sensors (250-2) may be exposed by being positioned outside the opening (212a) within the second state. For example, since one or more second image sensors (250-2) are positioned outside the structure within the second state, the relative positional relationship between one or more second image sensors (250-2) within the second state and the structure within the first housing (210) illustrated through the description of FIG. 2B may be different from the relative positional relationship within the first state.
[0070] For example, if the electronic device (101) does not include the above structure such as the opening (212a), one or more second image sensors (250-2) in the first state may not be exposed outside the housing, but in the second state, one or more second image sensors (250-2) may be exposed outside the housing.
[0071] Although not shown in FIGS. 2A, 2B, 2C, and 2D, the electronic device (101) may be in an intermediate state between the first state and the second state. For example, the size of the display area in the intermediate state may be larger than the size of the display area in the first state and smaller than the size of the display area in the second state. For example, the display area in the intermediate state may correspond to an area including a portion of area (230a) and area (230b). For example, in the intermediate state, a portion of area (230b) may be exposed, and another portion (or a remaining portion) of area (230b) may be covered by the first housing (210) or rolled into the first housing (210). However, the present invention is not limited thereto.
[0072] Referring again to FIG. 1, the electronic device (101) may include structures for moving a second housing (e.g., the second housing (220) of FIG. 2A) of the electronic device (101) relative to a first housing (e.g., the first housing (210) of FIG. 2A). For example, the structures may be exemplified through the description of FIGS. 3A and 3B.
[0073] Figures 3a and 3b are exploded perspective views of an exemplary electronic device.
[0074] Referring to FIGS. 3A and 3B, the electronic device (101) may include a housing (200) including a first housing (210) and a second housing (220), a display (230), and a driving unit (360).
[0075] For example, the first housing (210) may include a first housing cover (311), a plate (212), and a frame cover (313).
[0076] For example, the first housing cover (311) may at least partially form a side portion of an outer surface of the electronic device (101). For example, the first housing cover (311) may at least partially form a rear portion of the outer surface. For example, the first housing cover (311) may include an opening (311a) for one or more second image sensors (250-2). For example, the first housing cover (311) may include a surface that supports a plate (212). For example, the first housing cover (311) may be coupled with the plate (212). For example, the first housing cover (311) may include a frame cover (313). For example, the first housing cover (311) may be coupled with the frame cover (313).
[0077] For example, the plate (212) may at least partially form a rear portion of the outer surface. For example, the plate (212) may include an opening (212a) for one or more second image sensors (250-2). For example, the plate (212) may be disposed on the surface of the first housing cover (311). For example, the opening (212a) may be aligned with the opening (311a).
[0078] For example, the frame cover (313) may be at least partially surrounded by the first housing cover (311).
[0079] For example, the frame cover (313) may be at least partially wrapped by the display (230). For example, although the frame cover (313) is at least partially wrapped by the display (230), the position of the frame cover (313) may be maintained independently of the movement of the display (230). For example, the frame cover (313) may be arranged in relation to at least some of the components of the display (230). For example, the frame cover (313) may include rails (313a) that provide (or guide) a path for movement of at least one component of the display (230).
[0080] For example, the frame cover (313) may be coupled with at least one component of the electronic device (101). For example, the frame cover (313) may support a rechargeable battery (189). For example, the battery (189) may be supported through a recess or hole in a surface (313b) of the frame cover (313). For example, the frame cover (313) may be coupled with one end of a flexible printed circuit board (FPCB) (325) on a surface of the frame cover (313). For example, although not explicitly shown in FIGS. 3A and 3B , the other end of the FPCB (325) may be connected to the PCB (324) through at least one connector. For example, the PCB (324) may be electrically connected to another PCB (not shown in FIGS. 3A and 3B) that supplies power to the motor assembly (361) via the FPCB (325).
[0081] For example, the frame cover (313) can be coupled with at least one structure of the electronic device (101) for a plurality of states including the first state and the second state. For example, the frame cover (313) can fasten the motor assembly (361) of the driving unit (360).
[0082] For example, the second housing (220) may include a front cover (321) and a slide cover (322).
[0083] For example, the front cover (321) may be at least partially wrapped by the display (230). For example, the front cover (321) may be coupled with at least a portion of the first display area (231) of the display (230) that wraps the front cover (321), unlike the frame cover (313), such that the display (230) moves relative to the second housing (220) that moves relative to the first housing (210).
[0084] For example, the front cover (321) may be coupled with at least one component of the electronic device (101). For example, the front cover (321) may be coupled with a printed circuit board (PCB) (324) that includes components of the electronic device (101). For example, the PCB (324) may include a processor (120) (not shown in FIGS. 3A and 3B). For example, the front cover (321) may include one or more second image sensors (250-2).
[0085] For example, the front cover (321) can be combined with at least one structure of the electronic device (101) for a plurality of states including the first state and the second state. For example, the front cover (321) can fix the rack gear (363) of the driving unit (360).
[0086] For example, the front cover (321) can be combined with a slide cover (322).
[0087] For example, the slide cover (322) may be coupled with the front cover (321) to protect at least one component of the electronic device (101) coupled within the front cover (321) and / or at least one structure of the electronic device (101) coupled within the front cover (321). For example, the slide cover (322) may include a structure for the at least one component. For example, the slide cover (322) may include one or more openings (326) for one or more second image sensors (250-2). For example, the one or more openings (326) may be aligned with one or more second image sensors (250-2) disposed on the front cover (321). For example, the size of each of the one or more openings (326) may correspond to the size of each of the one or more second image sensors (250-2).
[0088] For example, the display (230) may include a support member (331). For example, the support member (331) may include a plurality of bars. For example, the plurality of bars may be coupled to each other.
[0089] For example, the drive unit (360) may include a motor assembly (361), a pinion gear (362), and a rack gear (363).
[0090] For example, the motor assembly (361) may operate based on power from the battery (189). For example, the power may be provided to the motor assembly (361) in response to the user input defined above.
[0091] For example, the pinion gear (362) may be coupled to the motor assembly (361) via a shaft. For example, the pinion gear (362) may be rotated based on the motion of the motor assembly (361) transmitted via the shaft.
[0092] For example, the rack gear (363) can be arranged relative to the pinion gear (362). For example, teeth of the rack gear (363) can mesh with teeth of the pinion gear (362). For example, the rack gear (363) can be moved in the first direction (261) or the second direction (262) according to the rotation of the pinion gear (362). For example, the second housing (220) can be moved in the first direction (261) and the second direction (262) by the rack gear (363) that is moved according to the rotation of the pinion gear (362) due to the operation of the motor assembly (361). For example, the first state of the electronic device (101) can be changed to a state different from the first state (e.g., one or more intermediate states or the second state) through the movement of the second housing (220) in the second direction (262). For example, the second state of the electronic device (101) can be changed to a state different from the second state (e.g., one or more intermediate states or the first state) through the movement of the second housing (220) in the first direction (261). For example, the change of the first state to the second state by the driving unit (360) and the change of the second state to the first state by the driving unit (360) can be exemplified through FIGS. 4A and 4B.
[0093] Fig. 4a is a cross-sectional view of an exemplary electronic device in a first state. Fig. 4b is a cross-sectional view of an exemplary electronic device in a second state.
[0094] Referring to FIGS. 4A and 4B, the motor assembly (361) can be operated based at least in part on the defined user input received within the first state (490). For example, the pinion gear (362) can be rotated in the first rotational direction (411) based at least in part on the operation of the motor assembly (361). For example, the rack gear (363) can be moved in the first direction (261) based at least in part on the rotation of the pinion gear (362) in the first rotational direction (411). For example, since the front cover (321) within the second housing (220) secures the rack gear (363), the second housing (220) can be moved in the first direction (261) based at least in part on the movement of the rack gear (363) in the first direction (261). For example, since the front cover (321) within the second housing (220) is coupled with at least a portion of the first display area (231) of the display (230) and fixes the rack gear (363), the display (230) can be moved at least in part based on the movement of the rack gear (363) in the first direction (261). For example, the display (230) can be moved along the rails (313a). For example, the shape of at least a portion of the plurality of bars of the support member (331) of the display (230) can be changed when the state (490) is changed to the second state (495).
[0095] For example, the second display area (232) of the display (230) may be moved according to the movement of the display (230). For example, the second display area (232) may be moved through the space between the first housing cover (311) and the frame cover (313) when the state (490) changes to the state (495) according to the user input defined above. For example, the second display area (232) in the state (495) may be exposed, unlike the second display area (232) that slides into the space in the state (490).
[0096] For example, the front cover (321) within the second housing (220) is coupled with the PCB (324) connected to the other end of the FPCB (325) and fixes the rack gear (363), so that the shape of the FPCB (325) can be changed when the state (490) is changed to the state (495).
[0097] The motor assembly (361) can be operated based at least in part on the defined user input received within the state (495). For example, the pinion gear (362) can be rotated in the second rotational direction (412) based at least in part on the operation of the motor assembly (361). For example, the rack gear (363) can be moved in the second direction (262) based at least in part on the rotation of the pinion gear (362) in the second rotational direction (412). For example, since the front cover (321) within the second housing (220) secures the rack gear (363), the second housing (220) can be moved in the second direction (262) based at least in part on the movement of the rack gear (363) in the second direction (262). For example, since the front cover (321) within the second housing (220) is coupled with at least a portion of the first display area (231) of the display (230) and fixes the rack gear (363), the display (230) can be moved at least in part based on the movement of the rack gear (363) in the second direction (262). For example, the display (230) can be moved along the rails (313a). For example, the shape of at least a portion of the plurality of bars of the support member (331) of the display (230) can be changed when the state (495) is changed to the state (490).
[0098] For example, the second display area (232) of the display (230) can be moved according to the movement of the display (230). For example, the second display area (232) can be moved through the space between the first housing cover (311) and the frame cover (313) when the state (495) is changed to the state (490) according to the user input defined above. For example, the second display area (232) in the state (490) can slide into the space, unlike the second display area (232) exposed in the state (495).
[0099] For example, the front cover (321) within the second housing (220) is coupled with the PCB (324) connected to the other end of the FPCB (325) and fixes the rack gear (363), so that the shape of the FPCB (325) can be changed when the state (495) is changed to the state (490).
[0100] FIGS. 2A to 4B illustrate an electronic device (101) in which the height of the display area is changed and the width of the display area is maintained when the first state (or the second state) is changed to the second state (or the first state) in the portrait mode, but this is for convenience of explanation. For example, the electronic device (101) may be implemented such that the height of the display area is maintained and the width of the display area is changed when the first state (or the second state) is changed to the second state (or the first state) in the portrait mode.
[0101] The display (230) of the electronic device (101) may include a first display area (231) disposed on a second housing (220), and a second display area (232) extending from the first display area (231) and at least partially sliding into the first housing (210) or visually exposed to the outside of the electronic device (101) according to movement of the second housing (220).
[0102] For example, the first display area (231) may be exposed to the outside of the electronic device (101). The first display area (231) may be an area that is substantially flat. For example, the first display area (231) may be an area of the display (230) that is not deformed. For example, the first display area (231) may be an area of the display (230) that is visually exposed to the outside and has a fixed size.
[0103] For example, the second display area (232) may be connected to the first display area (231). The second display area (232) may be an area of the display (230) that is deformable by the first housing (210) and / or the second housing (220). For example, the second display area (232) may be at least partially bent by at least partially sliding into the first housing (210). The second display area (232) may form a curved surface by at least partially sliding into the first housing (210). For example, the second display area (232) may be configured to change the size of the display (230) visually exposed to the outside of the electronic device (101) by at least partially sliding into the first housing (210) or by being exposed to the outside of the electronic device (101). For example, the electronic device (101) may include at least one gear (e.g., a pinion gear (362)) that provides a rotational axis for moving the second display area (232). The second display area (232) may be at least partially deformable by being bent about the rotational axis by the at least one gear. The display (230) may provide various user experiences to a user of the electronic device (101) by including the deformable second display area (232).
[0104] The second housing (220) can be movably coupled to the first housing (210) between a retracted position and an extended position of the electronic device (101). It should be noted that when the second housing (220) is referred to as moving with respect to the first housing (210) in this document, this refers to the relative movement of the second housing (220) with respect to the first housing (210), and does not limit the actuation of the housing (200) of the electronic device (101) and / or the arrangement relationship between the second housing (220) and the first housing (210). For example, the second housing (220) moving with respect to the first housing (210) may mean the first housing (210) moving with respect to the second housing (220), depending on the relative viewpoint. For example, a second housing (220) moving in a first direction (261) with respect to a first housing (210) may be expressed as a first housing (210) moving in a second direction (262) opposite to the first direction (261) with respect to the second housing (220). A second housing (220) moving in a second direction (262) opposite to the first direction (261) with respect to the first housing (210) may be expressed as a first housing (210) moving in the first direction (261) with respect to the second housing (220). However, the above-mentioned embodiments are exemplary and are not limited thereto.
[0105] The first state of the electronic device (101) may be defined as a state (e.g., state (490) of FIG. 4a) in which the second display area (232) of the display (230) is inserted into the first housing (210) and the display area of the display (230) that is visually exposed to the outside of the electronic device (101) has a minimum size. The first state may be referred to as a slide-in state or a closed state. The second state of the electronic device (101) may be defined as a state (e.g., state (495) of FIG. 4b) in which the second display area (232) of the display (230) is exposed to the outside of the electronic device (101) and the display area of the display (230) that is visually exposed to the outside of the electronic device (101) has a maximum size. The second state may be referred to as a slide-out state or an open state. For example, the first state may be a state in which the second housing (220) is movable in a first direction (261) with respect to the first housing (210). For example, the second state may be a state in which the second housing (220) is movable in a second direction (262) opposite to the first direction (261) with respect to the first housing (210). The first state may be referred to as a state in which the second housing (220) is in a retracted position with respect to the first housing (210), in that it provides a display area of the display (230) of the minimum size that is visually exposed to the outside of the electronic device (101). The second state may be referred to as a state in which the second housing (220) is in an extended position with respect to the first housing (210), in that it provides a display area of the maximum size of the display (230) visually exposed to the outside of the electronic device (101).
[0106] For example, although not shown, within an intermediate state between the first state and the second state, a portion of the second display area (232) may be exposed to the outside. The remainder of the second display area (232) may be disposed within the first housing (210). By allowing the second display area (232) to be deformed to fit within the first housing (210) or be exposed to the outside of the electronic device (101), the second display area (232) may be configured to provide a plurality of states to the electronic device (101).
[0107] For example, the second housing (220) may be coupled to the first housing (210) so as to be movable in a first direction (261) parallel to the y-axis with respect to the first housing (210) or in a second direction (262) opposite to the first direction (261). For example, the second housing (220) may be coupled to the first housing (210) so as to be slidable in a first direction (261) with respect to the first housing (210) or in a second direction (262) opposite to the first direction (261). For example, referring to FIGS. 2A, 2B, 2C, 2D, 4A, and 4B together, the second housing (220) may be slidable from a first state in a first direction (261) parallel to the y-axis with respect to the first housing (210). The second housing (220) may be configured to change the electronic device (101) from the first state to the second state by moving the second housing (220) in the first direction (261) with respect to the first housing (210). For example, the second housing (220) may slide and move in a second direction (262) that is parallel to the y-axis and opposite to the first direction (261) with respect to the first housing (210) from the second state. The second housing (220) may be configured to change the electronic device (101) from the second state to the first state by moving the second housing (220) in the second direction (262) with respect to the first housing (210).
[0108] For example, referring to FIGS. 2A, 2B, and 4A together, the first display area (231) may be disposed on the second housing (220) and exposed to the outside. Within the first state, the second display area (232) may be disposed within the first housing (210). During the transition from the first state to the second state, since the second housing (220) moves in the first direction (261) with respect to the first housing (210), the first display area (231) may move along the second housing (220) in the first direction (261). Since the second display area (232) extends from the first display area (231), the second display area (232) may be exposed to the outside by moving along the first display area (231).
[0109] For example, referring to FIGS. 2C, 2D, and 4B together, within the second state, the second display area (232) can be exposed to the outside. During the transition from the second state to the first state, since the second housing (220) moves in a second direction (262) opposite to the first direction (261) with respect to the first housing (210), the first display area (231) can move along the second housing (220) in the second direction (262). Since the second display area (232) extends from the first display area (231), the second display area (232) can enter the first housing (210) by moving along the first display area (231).
[0110] Fig. 5a illustrates a portion of an exemplary electronic device. Fig. 5b is a cross-sectional view of a drive unit of the exemplary electronic device taken along line A-A' of Fig. 5a. Fig. 5c illustrates a drive unit of the exemplary electronic device. Fig. 5d is a perspective view of the drive unit of the exemplary electronic device.
[0111] Referring to FIGS. 5A, 5B, 5C, and 5D, the electronic device (101) may include a housing (200) including a first housing (e.g., the first housing (210) of FIG. 2A) and a second housing (e.g., the second housing (220) of FIG. 2A) movably coupled to the first housing (210). The electronic device (101) may include a motor assembly (361) disposed within the housing (200) and a drive unit (e.g., the drive unit (360) of FIG. 3B) including a gear assembly (510). The motor assembly (361) may include a shaft (530), a magnet (540), a plurality of coils (550), and a plurality of magnetic members (560).
[0112] In one embodiment, the motor assembly (361) may be disposed within the housing (200). For example, the motor assembly (361) may be driven based on power supplied to the motor assembly (361). The second housing (220) may be moved relative to the first housing (210) based on driving of the motor assembly (361). For example, the motor assembly (361) may be fastened to the second housing (220) within the housing (200). The motor assembly (361) may be configured to move the second housing (220) relative to the first housing (210) by providing driving force to the first housing (210) through a gear assembly (510) coupled with the motor assembly (361). For example, the motor assembly (361) may be fastened to the first housing (210) within the housing (200). The motor assembly (361) may be configured to move the second housing (220) relative to the first housing (210) by providing driving force to the second housing (220) through a gear assembly (510) linked to the motor assembly (361). However, the embodiment is not limited thereto. The position at which the motor assembly (361) is arranged within the housing (200) may be changed to meet the needs of the user. For example, unlike the example described above, the motor assembly (361) may be fastened to the second housing (220) within the housing (200) to provide power to the first housing (210) to move the first housing (210) relative to the second housing (220) via a gear assembly (510) coupled with the motor assembly (361). However, the embodiments supported in the present disclosure are not limited thereto.
[0113] In one embodiment, the gear assembly (510) may be coupled with the motor assembly (361) to move the second housing (220) relative to the first housing (210) in response to driving of the motor assembly (361). For example, the gear assembly (510) may be disposed within the housing (200). The gear assembly (510) may include a plurality of intermeshing gears configured to move the second housing (220) relative to the first housing (210) in response to driving of the motor assembly (361). Some of the plurality of gears (e.g., a rack gear (363)) may be coupled to the first housing (210). Some of the plurality of gears (e.g., a pinion gear (362)) that are engaged with some of the plurality of gears may be coupled to the second housing (220). By the driving force provided from the motor assembly (361), the plurality of gears that are interlocked with each other can be configured to move the second housing (220) relative to the first housing (210).
[0114] In one embodiment, the motor assembly (361) may include a motor housing (520) for accommodating components within the motor assembly (361). For example, the motor housing (520) may include a first motor housing (521) coupled with the gear assembly (510) (or reducer (515)), a second motor housing (522) coupled with the first motor housing (521), a third motor housing (523) coupled with the second motor housing (522) and spaced apart from the first motor housing (521), and a fourth motor housing (524) coupled with the third motor housing (523) and spaced apart from the second motor housing (522). The first motor housing (521), the second motor housing (522), the third motor housing (523), and the fourth motor housing (524) can each provide space for components within the motor assembly (361).
[0115] In one embodiment, the shaft (530) may at least partially penetrate the interior of the motor assembly (361). The shaft (530) may be configured to transmit power to the gear assembly (510) to move the second housing (220) relative to the first housing (210) based on power supplied to the motor assembly (361). For example, one end of the shaft (530) may be configured to transmit the rotational force of the shaft (530) to the gear assembly (510) by interlocking or engaging with the gear assembly (510). The shaft (530) may be positioned at the center of the motor assembly (361) for stable driving of the motor assembly (361), but the embodiments supported in the present disclosure are not limited thereto.
[0116] According to one embodiment, the magnet (540) may surround the shaft (530). The magnet (540) may surround a lateral side of the shaft (530). The magnet (540) may be coupled to the shaft (530) to rotate the shaft (530). For example, the magnet (540) may be penetrated by the shaft (530). The magnet (540) may include, for example, a through-hole (540a) penetrated by the shaft (530). The through-hole (540a) may be fastened to the shaft (530). The shaft (530) may be positioned at the center of the magnet (540) by being inserted into the through-hole (540a), but the embodiment is not limited thereto. For example, the magnet (540) can be rotated through magnetic interaction with a plurality of magnetic members (560) within the motor assembly (361). The shaft (530) coupled to the magnet (540) can be rotated by the rotation of the magnet (540) due to the magnetic interaction. The shaft (530) can be rotated through the rotation of the magnet (540) to provide power (or torque) to move the second housing (220) relative to the first housing (210) with the gear assembly (510). The magnet (540) may have a cylindrical shape, but the embodiment is not limited thereto.
[0117] According to one embodiment, the shaft (530) of the motor assembly (361) and the magnet (540) coupled with the shaft (530) to cause rotation of the shaft (530) may be referred to as a rotor (or rotor assembly) of the motor assembly (361) in terms of rotation to provide driving force to the housing (200) of the electronic device (101). Hereinafter, configurations of an exemplary stator (or stator assembly) of the motor assembly (361) configured to rotate the rotor through interaction with the rotor are described.
[0118] In one embodiment, a plurality of coils (550) may surround a magnet (540) coupled to a shaft (530) within a motor assembly (361). The plurality of coils (550 in FIG. 5B) may be arranged along a direction in which the magnet (540) extends within the motor assembly (361). For example, the plurality of coils (550) may be arranged along an inner surface of a motor housing (520). The plurality of coils (550) may be configured to cause rotation and / or movement of the magnet (e.g., 540 in FIG. 5B) by interacting or corporating with a plurality of magnetic elements (560) based on a current flowing through the plurality of coils (550). For example, the plurality of coils (550) may include a first coil (551) disposed within a first motor housing (521), a second coil (552) disposed within a second motor housing (522), a third coil (553) disposed within a third motor housing (523), and a fourth coil (554) disposed within a fourth motor housing (524). The coils (551, 552, 553, 554) may be arranged in the longitudinal direction (e.g., -x direction) of the magnet (540) within the motor assembly (361) so as to surround the magnet (540). However, the number of coils and / or motor housings of the motor assembly (361) is not limited to the number of the present embodiment (e.g., 4), and may be implemented with a smaller number or a larger number.
[0119] In one embodiment, a plurality of magnetic members (560) can be disposed within the motor assembly (361) between a magnet (540) and a plurality of coils (550). The plurality of magnetic members (560) can include sets of magnetic members configured to have different magnetic poles based on a current flowing through each of the plurality of coils (550). The plurality of magnetic members (560) can surround the magnet (540) to interact with the magnet. For example, the plurality of magnetic members (560) can include a first set of magnetic members (561) that are paired and surrounded by a first coil (551) within a first motor housing (521). The first set of magnetic elements (561) may have different poles based on the current flowing in the first coil (551). The plurality of magnetic elements (560) may include a second set of magnetic elements (562) that are surrounded by a second coil (552) in a second motor housing (522) and are paired with each other. The second set of magnetic elements (562) may have different poles based on the current flowing in the second coil (552). The plurality of magnetic elements (560) may include a third set of magnetic elements (563) that are surrounded by a third coil (553) in a third motor housing (523) and are paired with each other. The third set of magnetic elements (563) may have different poles based on the current flowing in the third coil (553). The plurality of magnetic elements (560) may include a fourth set of magnetic elements (564) that are paired and surrounded by a fourth coil (554) within the fourth motor housing (524). The fourth set of magnetic elements (564) may have different magnetic poles based on the current flowing through the fourth coil (554).However, the embodiments supported by the present disclosure are not limited thereto, and the plurality of magnetic elements (560) may be configured to rotate the magnet (540) through interaction with the plurality of coils (550) by including sets of magnetic elements corresponding to each of the plurality of coils (550) and forming pairs with each other.
[0120] For example, sets of magnetic elements (561, 562, 563, 564) can be configured to rotate the magnet (540) through magnetic force with the magnetic poles of the magnet (540). For example, a first set of magnetic elements (561) can include a first magnetic element (561a) having different magnetic poles based on a current flowing in a first coil (551), and a second magnetic element (561b) facing the first magnetic element (561a). A second set of magnetic elements (562) can include a third magnetic element (562a) having different magnetic poles based on a current flowing in the second coil (552), and a fourth magnetic element (562b) facing the third magnetic element (562a). For example, the second magnetic member (561b) may be attached to the third magnetic member (562a). When the current flow direction of the current flowing in the first coil (551) is changed, the magnetic poles of the first magnetic member (561a) and the second magnetic member (561b) may be changed. When the current flow direction of the current flowing in the second coil (552) is changed, the magnetic poles of the third magnetic member (562a) and the fourth magnetic member (562b) may be changed. As the direction of the current flowing in the first coil (551) and the second coil (552) changes, the magnetic poles of the first set of magnetic members (561) and the second set of magnetic members (562) change, so that the magnet (540) can be rotated by the magnetic force between the different magnetic poles forming the magnet (540) and the first set of magnetic members (561) and the second set of magnetic members (562). The above-described structure of the first set of magnetic members (561) and the second set of magnetic members (562) can be substantially identically applied to the structure of the magnetic members (563a 563b) included in the third set of magnetic members (563) and the magnetic members (564a, 564b) included in the fourth set of magnetic members (564), but the embodiment is not limited thereto.
[0121] According to one embodiment, the motor assembly (361) may include a frame structure (570 in FIG. 5C) for fastening a plurality of coils (550) inside the motor housing (520). The frame structure (570) may have a plurality of coils (550) wound thereon. The frame structure (570) may separate the plurality of coils (550) from the plurality of magnetic members (560). For example, the plurality of coils (550) may be disposed between the frame structure (570) and the motor housing (520). For example, the plurality of coils (550) may surround an outer surface of the frame structure (570) facing the motor housing (520). The plurality of magnetic members (560) may be disposed along an inner surface of the frame structure (570) that is opposite the outer surface and faces the magnet (540).
[0122] For example, the frame structure (570) may include a first frame (571), a second frame (572), a third frame (573), and a fourth frame (574). The first frame (571) is disposed within the first motor housing (521), and a first coil (551) may be wound around the first frame. The first frame (571) may surround a first set of magnetic members (561). The second frame (572) is disposed within the second motor housing (522), and a second coil (552) may be wound around the second frame. The second frame (572) may surround a second set of magnetic members (562). The third frame (573) is disposed within the third motor housing (523), and a third coil (553) may be wound around the third frame. The third frame (573) can surround the third set of magnetic members (563). The fourth frame (574) is disposed within the fourth motor housing (524), and the fourth coil (554) can be wound around the fourth frame (574). The fourth frame (574) can surround the fourth set of magnetic members (564). However, the embodiments supported by the present disclosure are not limited thereto. For example, the motor housing (520) can be formed integrally with the frame structure (570). For example, the first motor housing (521) and the first frame (571), the second motor housing (522) and the second frame (572), the third motor housing (523) and the third frame (573), and the fourth motor housing (524) and the fourth frame (574) can each be formed integrally with one another.
[0123] In one embodiment, the plurality of coils (550), the plurality of magnetic elements (560), and the frame structure (570) may be referred to as a stator of the motor assembly (361) in that they are configured to rotate a magnet (540) coupled to a shaft (530) at a fixed position based on current flowing through the plurality of coils (550) within the motor assembly (361). For example, as illustrated, the motor assembly (361) may have a stator stack structure based on the arrangement of the coils (551, 552, 553, 554) and / or sets of magnetic elements (561, 562, 563, 564) corresponding to the coils (551, 552, 553, 554), but embodiments supported by the present disclosure are not limited thereto.
[0124] For example, a plurality of magnetic elements (560) within a stator of a motor assembly (361) may be referred to as a yoke of the stator in that they provide a path for magnetic flux to rotate a magnet (540) based on current flowing through the plurality of coils (550). For example, a frame structure (570) may be referred to as a bobbin or core of the stator in that it is a structure for winding the plurality of coils (550) within the stator of the motor assembly (361). However, the embodiments supported in this document are not limited thereto.
[0125] For example, the plurality of coils (550) can form a magnetic field based on the current flowing in the plurality of coils (550). Based on the magnetic field formed by the plurality of coils (550), the sets of magnetic elements (561, 562, 563, 564) surrounded by the plurality of coils (550) can be configured such that the magnetic poles of the magnetic elements forming a pair of each of the sets of magnetic elements (561, 562, 563, 564) can be changed. As the magnetic poles of the magnetic elements are changed, the magnet (540) can be rotated through the magnetic force (e.g., magnetic attraction force and magnetic repulsion force) between each of the magnetic elements and the magnet (540).
[0126] According to one embodiment, the magnet (540) is described as being rotated by a plurality of coils (550) and a plurality of magnetic members (560), but is not limited thereto. The magnet (540) may be configured to rotate the shaft (530) through various structures (or methods) for rotating the magnet (540) in addition to rotation through magnetic force and / or electromagnetic induction.
[0127] According to one embodiment, the gear assembly (510) may include a reducer (e.g., 515 of FIG. 5C) that reduces the rotational speed of the shaft (530) by engaging with the shaft (530). The gear assembly (510) may include a pinion gear (362) connected to the reducer (515), and a rack gear (363) that engages with the pinion gear (362) and is arranged within the housing (200) along a direction of movement of the second housing (220) relative to the first housing (210) so as to move the second housing (220) relative to the first housing (210) in accordance with rotation of the pinion gear (362).
[0128] For example, the reducer (515) may be engaged with the shaft (530) through a plurality of gears within the reducer (515). When the first shaft (530) is rotated by the magnet (540), the rotation speed of the pinion gear (362) connected to the reducer (515) may be smaller than the rotation speed of the shaft (530) through a gear ratio between the plurality of gears within the reducer (515). Since the rotation speed of the pinion gear (362) is smaller than the rotation speed of the shaft (530) through the gear ratio, the driving force for moving the second housing (220) relative to the first housing (210) by the pinion gear (362) engaging with the rack gear (363) may relatively increase.
[0129] For example, the shaft (530) may be rotated by the magnet (540) to provide a rotation axis of the magnet (540). The rotation axis may correspond to, for example, the rotation axis of the pinion gear (362). For example, the shaft (530) may be configured to rotate in a first rotation direction (411 in FIG. 5B) and a second rotation direction (412) opposite to the first rotation direction by the magnet (540), thereby rotating the pinion gear (362) in the first rotation direction (411) and / or the second rotation direction (412). For example, the rack gear (363) fastened to the second housing (220) may be configured to move the second housing (220) in a first direction (261) relative to the first housing (210) by rotation of the pinion gear (362) in the first rotational direction (411), or to move the second housing (220) in a second direction (262) opposite to the first direction (261) relative to the first housing (210) by rotation of the pinion gear (362) in a second rotational direction (412) opposite to the first rotational direction (411). However, the above-described embodiment is exemplary and is not limited thereto.
[0130] According to one embodiment, the electronic device (101) may include a flexible printed circuit board (580) (e.g., FPCB (325) of FIG. 3A) for supplying power to the motor assembly (361). The flexible printed circuit board (580) may electrically connect, for example, another PCB of the electronic device (101) (e.g., PCB (324) of FIG. 3A) and the motor assembly (361). For example, a processor of the electronic device (101) (e.g., processor (120) of FIG. 1) may be configured to control the supply of power to the motor assembly (361) through the flexible printed circuit board (580) or to control the flow of current of the plurality of coils (550). For example, the flexible printed circuit board (580) may include a structure for being coupled to the motor housing (520). The above flexible printed circuit board (580) may be referred to as a rigid flexible printed circuit board (RFPCB) in that it includes a portion having relatively high rigidity for being coupled to the motor housing (520), but the embodiment is not limited thereto.
[0131] According to one embodiment, the electronic device (101) may include a fastening structure (e.g., 590 of FIG. 5B) for fixing the position of the motor assembly (361) (or the driving unit (360)) within the housing (200). The fastening structure (590) may accommodate the pinion gear (362) of the gear assembly (510). For example, the fastening structure (590) may be fastened to the second housing (220) when the rack gear (363) is fastened to the first housing (210). For example, the fastening structure (590) may be fastened to the first housing (210) when the rack gear (363) is fastened to the second housing (220). For example, the fastening structure (590) may be coupled to a reducer (515). The above-mentioned fastening structure (590) may include guide structures for guiding the direction of movement of the rack gear (363) that moves according to the rotation of the pinion gear (362), but the embodiment is not limited thereto.
[0132] In one embodiment, the shaft (530) and the magnet (540) within the motor assembly (361) may be increased in length to improve the driving force (or torque) transmitted to the gear assembly (510) to move the second housing (220) relative to the first housing (210). As the length increases, the number of the plurality of coils (550) for interacting with the magnet (540) and / or the number of the plurality of magnetic members (560) corresponding to the plurality of coils (550) may increase. As the number of the plurality of coils (550) and / or the plurality of magnetic members (560) increases, noise (e.g., torque ripple) may be generated from the motor assembly (361) through the rotation of the magnet (540) that has become relatively longer. The motor assembly (361) may be required to have a structure that provides improved driving force for the housing (200) while reducing noise generated from the motor assembly (361). The structure is described below through the illustrations and descriptions of FIGS. 6A to 6C.
[0133] Fig. 6a illustrates a driving unit of an exemplary electronic device. Fig. 6b is an exploded view of the driving unit of the exemplary electronic device of Fig. 6a. Fig. 6c is a block diagram of the driving unit of the exemplary electronic device.
[0134] Referring to FIGS. 6A, 6B, and 6C, an electronic device (e.g., electronic device (101) of FIG. 1) may include a housing (e.g., housing (200) of FIG. 2A) that includes a first housing (e.g., first housing (210) of FIG. 2A) and a second housing (e.g., second housing (220) of FIG. 2A) movably coupled with respect to the first housing (210). The electronic device (101) may include a drive unit (360) that includes a motor assembly (361) disposed within the housing (200), and a gear assembly (510) configured to move the second housing (220) with respect to the first housing (210) in accordance with driving of the motor assembly (361). However, the embodiments supported by the present disclosure are not limited thereto, and the electronic device (101) may include, for example, configurations (e.g., flexible printed circuit board (580)) illustrated and described in FIGS. 5A to 5C, and hereinafter, redundant descriptions of configurations having the same reference numerals as described in FIGS. 5A to 5C are omitted.
[0135] According to one embodiment, the motor assembly (361) may include a structure in which a plurality of motors (e.g., motors (601, 602)) are coupled via at least one coupler (e.g., coupler (603)), unlike those illustrated in FIGS. 5A to 5C . The motor assembly (361) may include a first motor (601) including a first rotor (610), a second motor (602) including a second rotor (620), and a coupler (603) disposed between the first motor (601) and the second motor (602). The coupler (603) may be configured to selectively couple the first rotor (610) of the first motor (601) and the second rotor (620) of the second motor (602). The structure of the coupler (603) for selectively coupling the first rotor (610) and the second rotor (620) may be exemplified through the illustrations and descriptions of FIGS. 9A to 9D , but the embodiments supported by the present disclosure are not limited thereto. For example, the first motor (601) and the second motor (602) may be separated from each other by the coupler (603). The coupler (603) may be interposed between the first motor (601) and the second motor (602).
[0136] In one embodiment, the first set of magnetic elements (561) may be misaligned with the second set of magnetic elements (562). The third set of magnetic elements (563) may be misaligned with the fourth set of magnetic elements (564). For example, the misaligned pole pitch of the first set of magnetic elements (561) and the second set of magnetic elements (562) may correspond to the misaligned pole pitch of the third set of magnetic elements (563) and the fourth set of magnetic elements (564). The pole pitch may be a 1 / 4 pitch, but the embodiment is not limited thereto. For example, the number of magnetic poles of the first magnetic elements (661) may correspond to the number of magnetic poles of the second magnetic elements (662). The number of magnetic poles of the first magnetic members (661) may correspond to the number of magnetic poles of the first magnet (612). The number of magnetic poles of the second magnet (612) may correspond to the number of magnetic poles of the second magnet (622). The number of magnetic poles of the first magnetic members (661) may be, for example, 10. The pole pitch of the magnetic poles of the first magnet (612) corresponding to each of the first magnetic members (661) may be, for example, 18 degrees, but the embodiment is not limited thereto. For example, the sets of magnetic members (561, 562, 563, 564) may each have a sawtooth shape. The tooth shape may be manufactured through, but is not limited to, a circular plate punch or a bell shape through plastic processing. The sets of the above magnetic elements (561, 562, 563, 564) may be referred to as claw-poles in terms of their respective magnetic poles, but the embodiment is not limited thereto.
[0137] According to one embodiment, a first rotor (610) of a first motor (601) may be coupled with a gear assembly (510). For example, the first rotor (610) may include a first shaft (611) coupled with the gear assembly (510), and a first magnet (612) surrounding the first shaft (611) to rotate the first shaft (611). The first magnet (612), for example, may include a first through-hole (612a) through which the first shaft (611) passes. The first magnet (612) may be configured to rotate the first shaft (611) by being coupled with the first shaft (611) through the first through-hole (612a). For example, a second rotor (620) of a second motor (602) may be separated from a first rotor (610) of a first motor (601) by a coupler (603). The second rotor (620) may be selectively coupled to the first rotor (610) through the coupler (603). For example, the second rotor (620) may include a second shaft (621) and a second magnet (622) surrounding the second shaft (621) to rotate the second shaft (621). For example, the second magnet (622) may include a second through hole (622a) penetrated by the second shaft (621). The second magnet (622) may be configured to rotate the second shaft (621) by being coupled to the second shaft (621) through the second through hole (622a).
[0138] In one embodiment, the first shaft (611) may provide an axis of rotation of the first rotor (610). The second shaft (621) may provide an axis of rotation of the second rotor (620) and may be separated from the first shaft (611). The coupler (603) may be configured to couple the first rotor (610) and the second rotor (620) such that the axis of rotation of the first rotor (610) provided by the first shaft (611) corresponds to the axis of rotation of the second rotor (620) provided by the second shaft (621). For example, when viewing the first rotor (610) from above within the motor assembly (361) (e.g., when viewing in the -x direction), the first shaft (611) and the second shaft (621) may overlap each other. When the first rotor (610) is viewed from above, the rotational axis of the first rotor (610) may overlap with the rotational axis of the second rotor (620). For example, in a state where the first rotor (610) and the second rotor (620) are coupled by the coupler (603), the rotational axis of the first rotor (610) provided by the first shaft (611) and the rotational axis of the second rotor (620) provided by the second shaft (621) may be aligned with or correspond to each other. For example, the first rotor (610) and the second rotor (620) may be coaxial with each other so that the rotational axis of the first rotor (610) and the rotational axis of the second rotor (620) correspond to each other, but the embodiments supported in the present disclosure are not limited thereto. The coupler (603) is configured to couple the first rotor (610) and the second rotor (620) so that the rotational axis of the first rotor (610) provided by the first shaft (611) corresponds to the rotational axis of the second rotor (620) provided by the second shaft (621), thereby reducing noise generated from the motor assembly (361).
[0139] According to one embodiment, the reducer (515) of the gear assembly (510) may include a third shaft (511) configured to mesh with the first shaft (611) and to be rotated by the rotation of the first shaft (611). The third shaft (511) may be coupled with the pinion gear (362) such that the pinion gear (362) is rotated by the third shaft (511). The rotation speed of the third shaft (511) may be lower than the rotation speed of the first shaft (611) of the motor assembly (361).
[0140] According to one embodiment, the reducer (515) of the gear assembly (510) may be engaged with one end of the first shaft (611) facing the gear assembly (510). The reducer (515) may be configured to adjust and / or control the rotational speed of the third shaft (511) such that the rotational speed of the third shaft (511), which is connected to the reducer (515) and configured to rotate the pinion gear (362), is less than the rotational speed of the first shaft (611). For example, since the gear ratios of the gears meshed with the first shaft (611) (e.g., the sun gear (512) of FIG. 6A) and the gears meshed with the third shaft (511) (e.g., the planetary gears (514a, 514b, 514c, 514d) of FIG. 6A) within the reducer (515) are different, the rotational speed of the third shaft (511) may be lower than the rotational speed of the first shaft (611). For example, when the number of gears rotated by the first shaft (611) within the reducer (515) is greater than the number of gears rotated by the third shaft (511), even if the third shaft (511) is rotated by the rotation of the first shaft (611), the rotational speed of the third shaft (511) may be configured to be lower than the rotational speed of the first shaft (611). The above-described reducer (515) can provide a driving force to move the second housing (220) relative to the first housing (210) through the rotation of the third shaft (511) obtained based on the rotation of the first shaft (611). The above-described reducer (515) can be referred to as a gear box in that it includes a plurality of gears that mesh with one end of the first shaft (611), but is not limited thereto.
[0141] For example, the gear assembly (510) may include a sun gear (512) for changing the rotation speed of the first shaft (611), a ring gear (513) surrounding the sun gear (512), planetary gears (514a, 514b, 514c, 514d) that mesh between the sun gear (512) and the ring gear (513), and a wheel (516) configured to be coupled with each of the planetary gears (514a, 514b, 514c, 514d) and to rotate together with the planetary gears (514a, 514b, 514c, 514d). For example, the first shaft (611) may be coupled to the sun gear (512). The rotation speed of the first shaft (611) may correspond to the rotation speed of the sun gear (512). For example, the third shaft (511) of the gear assembly (510) may extend from the pinion gear (362) to the wheel (516). The rotation speed of the wheel (516) and the third shaft may correspond to the rotation speed of the pinion gear (362). When the first shaft (611) rotates, the sun gear (512) coupled with the first shaft (611) may rotate. The planetary gears (514a, 514b, 514c, 514d) meshed with the sun gear (512) may rotate between the sun gear (512) and the ring gear (513), respectively, with respect to the sun gear (512). The wheel (516) coupled with each of the planetary gears (514a, 514b, 514c, 514d) can rotate the third shaft (511) and the pinion gear (362) by rotating together with the planetary gears (514a, 514b, 514c, 514d). Due to the gear ratio of the sun gear (512) and the ring gear (513), the rotation speed of the pinion gear (362) can be lower than the rotation speed of the first shaft (611). For example, in a fastened state, the first shaft (611) can cause the rotation of the third shaft (511) coupled with the reducer (515).Due to the gear ratio of the sun gear (512) and the ring gear (513), the rotation speed of the third shaft (511) may be lower than the rotation speed of the first shaft (611). However, the embodiment is not limited thereto, and the reducer (515) may include a plurality of deceleration gear assemblies for changing the rotation speed of the first shaft (611).
[0142] According to one embodiment, the first motor (601) may include a first stator (630) surrounding the first rotor (610) within the first motor (601) to rotate the first rotor (610). The first stator (630) may include first magnetic elements (661) configured to rotate a first magnet (612) by changing a magnetic pole, one or more first coils (651) configured to change a magnetic pole of the first magnetic elements (661) by interacting with the first magnetic elements (661), and a first stator frame (671) around which the one or more first coils (651) are wound.
[0143] In one embodiment, the second motor (602) may include a second stator (640) surrounding the second rotor (620) within the second motor (602) to rotate the second rotor (620). The second stator (640) may include second magnetic elements (662) configured to rotate the second magnet (622) by changing the magnetic pole, one or more second coils (652) configured to change the magnetic pole of the second magnetic elements (662) by interacting with the second magnetic elements (662), and a second stator frame (672) around which the one or more second coils (652) are wound. However, embodiments supported by the present disclosure are not limited thereto. The motor assembly (361) includes a structure in which motors (601, 602) each including spaced apart rotors (610, 620) are coupled through a coupler (603), so that the first rotor (610) can rotate independently with respect to the second rotor (620) or the first rotor (610) can rotate together with the second rotor (620).
[0144] The operations described below may be performed or caused by an electronic device (101) including a driving unit (360) and / or a processor (e.g., processor (120) of FIG. 1) of the electronic device (101). The processor (120) may be referred to as at least one processor or one or more processors including processing circuitry within the electronic device (101). In addition, instructions stored in one or more storage media included in a memory (e.g., memory (130) of FIG. 1) within the electronic device (101) may cause the electronic device (101) to perform each of the operations described below when individually or collectively executed by the processor (120).
[0145] According to one embodiment, the processor (120) may receive a user input for moving the second housing (220) relative to the first housing (210). For example, the processor (120) may receive a first input for expanding a display area of a display (e.g., display (230) of FIG. 2A) within a first state of the electronic device (101) referred to as a collapsed position of the electronic device (101) (e.g., state (490) of FIG. 4A). The first input may be, for example, an input for moving the second housing (220) relative to the first housing (210) in a first direction (261). For example, the processor (120) may receive a second input for reducing a display area of the display (230) within a second state of the electronic device (101) referred to as an expanded position of the electronic device (101) (e.g., state (495) of FIG. 4B). The second input may be, for example, an input for moving the second housing (220) in a second direction (262) opposite to the first direction (261) with respect to the first housing (210). However, the embodiments supported in the present disclosure are not limited thereto.
[0146] According to one embodiment, the processor (120) may separate the first rotor (610) and the second rotor (620) through the coupler (603) to transmit a first torque to the gear assembly (510) to move the second housing (220) relative to the first housing (210) by rotating the first rotor (610) among the first rotor (610) and the second rotor (620) based on a user input for moving the second housing (220) relative to the first housing (210). The processor may couple the first rotor (610) and the second rotor (620) through the coupler (603) to transmit a second torque greater than the first torque to the gear assembly (510) to move the second housing (220) relative to the first housing (210) by rotating the first rotor (610) and the second rotor (620) together based on the user input.
[0147] For example, the processor (120) may control the coupler (603) to separate the first rotor (610) and the second rotor (620) to reduce noise generated from the motor assembly (361) based on a user input for moving the second housing (220) relative to the first housing (210). The processor (120) may reduce noise generated from the motor assembly (361) through the rotation of the first rotor (610) having a relatively short length, unlike as illustrated in FIGS. 5A to 5C, by rotating only the first rotor (610) based on the separated first rotor (610) and second rotor (620).
[0148] For example, the processor (120) may control the coupler (603) to couple the first rotor (610) and the second rotor (620) to increase the torque transmitted from the motor assembly (361) to the gear assembly (510) based on a user input to move the second housing (220) relative to the first housing (210). The first rotor (610) and the second rotor (620) may be coupled through the coupler (603) to rotate together based on current flowing through the coils (551, 552, 553, 554). The above processor (120) can increase the torque transmitted to the gear assembly (510) by coupling the first rotor (610) and the second rotor (620), unlike in a state where the first rotor (610) and the second rotor (620) are separated.
[0149] For example, the processor (120) may control the coupler (603) to separate the first rotor (610) and the second rotor (620) based on identifying a first user input for reducing noise generated from the motor assembly (361). The first user input may be received and / or set via, for example, a visual object (1123) for a low-noise mode of the electronic device (101) as exemplarily illustrated and described in FIG. 11. For example, the processor (120) may control the coupler (603) to couple the first rotor (610) and the second rotor (620) based on identifying a second user input for increasing torque transmitted from the motor assembly (361) to the gear assembly (510). The second user input may be received and / or set, for example, via a visual object (1121) for a high-performance mode of the electronic device (101) as exemplarily illustrated and described in FIG. 11. However, the embodiments supported by the present disclosure are not limited thereto.
[0150] According to one embodiment, the electronic device (101) may include a first sensor (681) configured to detect a temperature of the motor assembly (361). The first sensor (681) may be disposed within the motor assembly (361) as illustrated in FIG. 6C to detect the temperature of the motor assembly (361), but embodiments supported by the present disclosure are not limited thereto, and the first sensor (681) may be disposed around the motor assembly (361) to detect the temperature of the motor assembly (361). The processor (120) may identify the temperature of the motor assembly (361) detected through the first sensor (681). The processor (120) may control the coupler (603) to separate the first rotor (610) and the second rotor (620) based on identifying the temperature as being higher than a reference temperature. The processor (120) may control the coupler (603) to couple the first rotor (610) and the second rotor (620) based on identifying the temperature below the reference temperature. However, the embodiments supported by the present disclosure are not limited thereto, and the processor (120) may control the coupler (603) to selectively couple the first rotor (610) and the second rotor (620) depending on the internal environment and / or load level of the motor assembly (361). The third user input for selectively coupling the first rotor (610) and the second rotor (620) depending on the internal environment and / or load level of the motor assembly (361) may be received and / or set via, for example, a visual object (1122) for a low-noise mode of the electronic device (101) as exemplarily illustrated and described in FIG. 11. However, the embodiments supported by the present disclosure are not limited thereto.
[0151] According to one embodiment, the processor (120) may control the first motor (601) to rotate the first rotor (610) based on the first rotor (610) and the second rotor (620) separated through the coupler (603). The processor (120) may control the first motor (601) and the second motor (602) to rotate the first rotor (610) and the second rotor (620) together based on the first rotor (610) and the second rotor (620) coupled through the coupler (603).
[0152] For example, the processor (120) can identify the first rotor (610) and the second rotor (620) separated through the coupler (603). The processor (120) can control the power management circuit (or the motor drive circuit (720) of FIG. 7) so that power is supplied only to the first motor (601) among the first motor (601) and the second motor (602) based on the first rotor (610) and the second rotor (620) separated through the coupler (603). By supplying the power only to the first motor (601), a relatively small first torque can be transmitted to the gear assembly (510) through the rotation of the first rotor (610). For example, the processor (120) can identify the first rotor (610) and the second rotor (620) coupled through the coupler (603). The processor (120) can control the power management circuit (or the motor drive circuit (720) of FIG. 7) so that power is supplied to both the first motor (601) and the second motor (602) based on the first rotor (610) and the second rotor (620) coupled through the coupler (603). By supplying power to both the first motor (601) and the second motor (602) while the first rotor (610) and the second rotor (620) are coupled, a second torque greater than the first torque can be transmitted to the gear assembly (510) through the rotation of the first rotor (610) and the second rotor (620).
[0153] For example, the processor (120) can transmit a first torque to the gear assembly (510) based on a current flowing in one or more first coils (651) of the first motor (601) while the first rotor (610) and the second rotor (620) are separated through the coupler (603). Based on the current flowing in the one or more first coils (651), the first magnetic members (661) surrounded by the one or more first coils (651) can cause the first rotor (610) to rotate through interaction with the first magnet (612). Since only the rotational force of the first rotor (610) caused by the first coils (651) and the first magnetic members (661) is transmitted to the first gear assembly (510), the motor assembly (361) can reduce noise generated from the motor assembly (361) through the rotation of the first rotor (610) separated from the second rotor (620).
[0154] For example, the processor (120) may transmit a second torque greater than the first torque to the gear assembly (510) based on a current flowing in one or more first coils (651) in the first motor (601) and a current flowing in one or more second coils (652) in the second motor (602), while the first rotor (610) and the second rotor (620) are coupled through the coupler (603). Based on the current flowing in the one or more first coils (651), the first magnetic members (661) surrounded by the one or more first coils (651) may cause the first rotor (610) to rotate through interaction with the first magnet (612). Based on the current flowing in the one or more second coils (652), the second magnetic members (662) surrounded by the one or more second coils (652) can cause the second rotor (620) to rotate through interaction with the second magnet (622). Since the rotational force of the first rotor (610) caused by the one or more first coils (651) and the first magnetic members (661) and the rotational force of the second rotor (620) caused by the one or more second coils (652) and the second magnetic members (662) are transmitted to the gear assembly (510), the motor assembly (361) can increase the torque transmitted to the gear assembly (510) through the rotation of the first rotor (610) coupled with the second rotor (620).
[0155] In one embodiment, the motor assembly (361) may increase noise generated from the motor assembly (361) when the magnetic poles forming the first magnet (612) and the magnetic poles forming the second magnet (622) are not aligned due to the separated structure of the first rotor (610) and the second rotor (620). In order to reduce noise, the motor assembly (361) may require an operation and / or structure to align the first magnet (612) and the second magnet (622) before coupling the first magnet (612) and the second magnet (622) through the coupler (603).
[0156] According to one embodiment, the first magnet (612) of the first rotor (610) may include first magnetic poles (613) having the same polarity as each other and second magnetic poles (614) disposed between the first magnetic poles (613) and having a different polarity from the first magnetic poles (613). Each of the first magnetic poles (613) and the second magnetic poles (614) may be formed to have substantially the same size and / or angle to ensure stable rotation of the first magnet (612). The second magnet (622) of the second rotor (620) may have a structure substantially the same as or similar to the above-described structure of the first rotor (610). For example, the second rotor (620) may include third poles (623) having the same polarity as each other and fourth poles (624) disposed between the third poles (623) and having a different polarity from the third poles (623). Each of the third poles (623) and the fourth poles (624) may be formed to have substantially the same size and / or angle as each other, and may have substantially the same size and / or angle as the sizes and / or angles of the first poles (613) and the second poles (614).
[0157] For example, the number of first stimuli (613) may be the same as the number of second stimuli (614). The number of third stimuli (623) may be the same as the number of fourth stimuli (624). For example, the polarity of the first stimuli (613) of the first magnet (612) may be the same as the polarity of the third stimuli (623) of the second magnet (622). The number of the first stimuli (613) may correspond to the number of the third stimuli (623). The polarity of the second stimuli (614) of the first magnet (622) may be the same as the polarity of the fourth stimuli (624) of the second magnet (622). The number of the second stimuli (614) may correspond to the number of the fourth stimuli (624). However, the embodiments supported by the present disclosure are not limited thereto. The first magnet (612) and the second magnet (622) have substantially the same structure, thereby reducing noise generated from the motor assembly (361) in a state where the first rotor (610) and the second rotor (620) are coupled by the coupler (603).
[0158] According to one embodiment, the electronic device (101) may include a second sensor (682) disposed within the motor assembly (361). The second sensor (682) may be configured to detect the positions of the first magnet (612) and the second magnet (622) by being disposed within the motor assembly (361). The processor (120) may identify, through the second sensor (682), whether the first magnet (612) and the second magnet (622) are positioned such that the first poles (613) of the first magnet (612) and the third poles (623) of the second magnet (622) having the same polarity as the first poles (613) are aligned. For example, the processor (120) can identify, through the second sensor (682), whether the first stimuli (613) within the motor assembly (361) are positioned to face the third stimuli (623) without being misaligned with the third stimuli (623).
[0159] In one embodiment, the processor (120) may control the first motor (601) to rotate the first rotor (610) to align the first poles (613) and the third poles (623) based on identifying that the first poles (613) and the third poles (623) having the same polarity are misaligned. For example, the processor (120) may control the first motor (601) to cause current to flow through one or more first coils (651) of the first motor (601) based on the first poles (613) and the third poles (623) being misaligned, thereby rotating the first magnet (612) including the first poles (613). By the rotation of the first magnet (612), the first poles (613) can be aligned with the third poles (623) of the second magnet (622). The processor (120) can control the coupler (603) to couple the first rotor (610) and the second rotor (620) to increase the torque transmitted to the gear assembly (510) based on identifying that the first poles (613) and the third poles (623) are aligned. However, the embodiments supported in the present disclosure are not limited thereto.
[0160] According to the above-described embodiment, the electronic device (101) includes a coupler (603) configured to selectively couple the first rotor (610) of the first motor (601) and the second rotor (620) of the second motor (602), thereby selectively controlling the motor assembly (361) to reduce noise generated from the motor assembly (361) or increase torque transmitted from the motor assembly (361) to the gear assembly (510).
[0161] Figure 7 is a circuit diagram for selective control of a motor assembly of an exemplary electronic device.
[0162] Referring to FIG. 7, the electronic device (101) may include a motor drive circuit (720) for selectively controlling the motor assembly (361) illustrated and described in FIGS. 6A to 6C. The processor (120) of the electronic device (101) may selectively control the motor assembly (361) through the motor drive circuit (720). The electronic device (101) may include a converter (710) for changing a voltage required for the motor assembly (361). The converter (710) may be configured to change the voltage required for the motor assembly (361) based on power provided from a battery of the electronic device (101) (e.g., battery (189) of FIG. 1), for example, by a power management circuit of the electronic device (101). However, the embodiment is not limited thereto, and the electronic device (101) may include configurations for selective control of the motor assembly (361), as illustrated and described in FIGS. 6A to 6C (e.g., coupler (603) of FIG. 6A).
[0163] According to one embodiment, the electronic device (101) may include a plurality of transistors (730) for controlling a first motor (601) and a second motor (602). For example, the processor (120) may control the motor drive circuit (720) to cause current to flow through the first coil (551) in the first motor (601) through the transistors (731, 732) to rotate the first rotor (610) while the first rotor (e.g., the first rotor (610) of FIG. 6A) and the second rotor (e.g., the second rotor (620) of FIG. 6A) are separated through the coupler (603). For example, the processor (120) can control the motor drive circuit (720) to cause current to flow to the second coil (552) in the first motor (601) through the transistors (733, 734) in order to rotate the first rotor (610) while the first rotor (610) and the second rotor (620) are separated through the coupler (603).
[0164] For example, the processor (120) can control the motor drive circuit (720) to cause current to flow through the first coil (551) in the first motor (601) and the third coil (553) in the second motor (602) through the transistors (731, 732) in order to rotate the first rotor (610) and the second rotor (620) together while the first rotor (610) and the second rotor (620) are coupled through the coupler (603). For example, the processor (120) may control the motor drive circuit (720) to cause current to flow through the second coil (552) in the first motor (601) and the fourth coil (554) in the second motor (602) through the transistors (733, 734) in order to rotate the first rotor (610) and the second rotor (620) together while the first rotor (610) and the second rotor (620) are coupled through the coupler (603). However, the embodiment supported by the present disclosure is not limited thereto, and the electronic device (101) may selectively control the motor assembly (361) by including a plurality of switching transistors to reduce noise generated from the motor assembly (361) or increase torque transmitted from the motor assembly (361) to a gear assembly (e.g., the gear assembly (510) of FIG. 5A).
[0165] Figures 8a, 8b, and 8c are flow charts of exemplary electronic devices for selective control of a motor assembly.
[0166] The operations of FIGS. 8A, 8B, and 8C may be caused or performed by the electronic device (101) and / or the processor (120) of the electronic device (101) as exemplarily illustrated and described in FIGS. 6A to 7.
[0167] Referring to FIG. 8A, in operation (801), the processor (120) may receive a user input for moving a second housing (e.g., the second housing (220) of FIG. 2A) relative to a first housing (e.g., the first housing (210) of FIG. 2A). For example, the processor (120) may receive a user input for moving the second housing (220) relative to the first housing (210) in a first direction (e.g., the first direction (261) of FIG. 2A) or a user input for moving the second housing (220) relative to the first housing (210) in a second direction (262) opposite to the first direction (261).
[0168] In operation (803), the processor (120) may identify whether a first rotor (e.g., the first rotor (610) of FIG. 6A) of a first motor (e.g., the first motor (601) of FIG. 6A) is set together with a second rotor (e.g., the second rotor (620) of FIG. 6A) of a second motor (e.g., the second motor (602) of FIG. 6A). For example, referring also to FIG. 11, based on a first user input via a visual object (1123), the electronic device (101) may be set such that the first rotor (610) is separated from the second rotor (620) and thereby rotates independently with respect to the second rotor (620). Based on the first user input, the processor (120) may perform operation (807). For example, referring to FIG. 11, based on a second user input via a visual object (1121), the electronic device (101) may be configured to rotate the first rotor (610) together with the second rotor (620) by engaging the first rotor (610) with the second rotor (620). The processor (120) may perform operation (805) based on the second user input.
[0169] In operation (805), the processor (120) may control a motor drive circuit (e.g., a motor drive circuit (720) of FIG. 7) or a power management circuit to supply power to a coupler (e.g., a coupler (603) of FIG. 6A) for coupling the first rotor (610) and the second rotor (620) based on identifying that the first rotor (610) is set to rotate together with the second rotor (620).
[0170] In operation (807), the processor (120) may control the motor drive circuit (720) or the power management circuit to bypass the power supply to the coupler (603) to separate the first rotor (610) and the second rotor (620). The coupler (603) may separate the first rotor (610) and the second rotor (620) by bypassing the power supply.
[0171] In operation (809), the processor (120) may control the motor drive circuit (720) or the power management circuit to cause current to flow in one or more first coils (e.g., one or more first coils (651) of FIG. 6A) of a first motor (601) surrounding the first rotor (610) and one or more second coils (e.g., one or more second coils (652) of FIG. 6A) of a second motor (602) surrounding the second rotor (620) so that the first rotor (610) and the second rotor (620) rotate together, based on the first rotor (610) and the second rotor (620) coupled through the coupler (603).
[0172] In operation (811), the processor (120) may control the motor drive circuit (720) or the power management circuit to cause current to flow in one or more first coils (651) of the first motor (601) surrounding the first rotor (610) so that the first rotor (610) rotates among the first rotor (610) and the second rotor (620), based on the first rotor (610) and the second rotor (620) separated through the coupler (603).
[0173] Referring to FIG. 8B, unlike operation (803) of FIG. 8A, in operation (813), the processor (120) may identify whether the temperature inside the motor assembly (361) is below a reference temperature. For example, the processor (120) may identify whether the internal temperature of the motor assembly (361) is below a reference temperature through a first sensor configured to detect the internal temperature of the motor assembly (361) (e.g., the first sensor (681) of FIG. 6C). For example, operation (813) may be set or performed based on a third user input to a visual object (1122), when referring also to FIG. 11. Based on identifying the temperature of the motor assembly (361) as being below the reference temperature, the processor (120) may perform operation (805). If the temperature below the reference temperature is not identified, the processor (120) may perform operation (807).
[0174] Referring to FIG. 8c, the processor (120) may perform pre-operations for aligning the first rotor (610) and the second rotor (620) before coupling or separating the first rotor (610) and the second rotor (620) through the coupler (603).
[0175] In operation (815), the processor (120) can identify whether the first poles of the first rotor (610) (e.g., the first poles (613) of FIG. 6A) and the third poles of the second rotor (620) having the same polarity as the first poles (613) (e.g., the third poles (623) of FIG. 6A) are aligned. For example, the processor (120) can identify whether the first poles (613) and the third poles (623) are aligned with each other through a second sensor (e.g., the second sensor (682) of FIG. 6C) disposed within the motor assembly (361). Based on identifying that the first poles (613) and the third poles (623) are aligned, the processor (120) can perform operation (803).
[0176] In operation (817), the processor (120) may control a motor drive circuit or a power management circuit to cause current to flow in one or more first coils (651) of the first motor (601) to align the first stimuli (613) of the first rotor (610) and the third stimuli (623) of the second rotor (620) based on the first stimuli (613) of the first rotor (610) and the third stimuli (623) of the second rotor (620) that are misaligned with each other.
[0177] Figures 9a, 9b, 9c, and 9d illustrate couplers of a motor assembly of an exemplary electronic device.
[0178] Referring to FIGS. 9A, 9B, 9C, and 9D, an electronic device (e.g., electronic device (101) of FIG. 1) may include a housing (e.g., housing (200) of FIG. 2A) that includes a first housing (e.g., first housing (210) of FIG. 2A) and a second housing (e.g., second housing (220) of FIG. 2A) movably coupled to the first housing (210). The electronic device (101) may include a motor assembly (e.g., motor assembly (361) of FIG. 3b) disposed within the housing (200) and including a first motor (e.g., first motor (601) of FIG. 6a) including a first rotor (610), a second motor (e.g., second motor (602) of FIG. 6a) including a second rotor (620), and a coupler (603) disposed between the first motor (601) and the second motor (602) and configured to selectively couple the first rotor (610) and the second rotor (620). The electronic device (101) may include a gear assembly (e.g., gear assembly (510) of FIG. 5A) that is coupled with the first rotor (610) and configured to move the second housing (220) relative to the first housing (210) according to the driving of the motor assembly (361). The electronic device (101) may include a processor (e.g., processor (120) of FIG. 1). The processor (120) may receive a user input for moving the second housing (220) relative to the first housing (210). The processor (120) may separate the first rotor (610) and the second rotor (620) through the coupler (603) based on the received user input, so as to transmit a first torque to the gear assembly (510) to move the second housing part (220) relative to the first housing part (210) by rotating the first rotor (610) among the first rotor (610) and the second rotor (620).The processor (120) may couple the first rotor (610) and the second rotor (620) through the coupler (603) to transmit a second torque greater than the first torque to the gear assembly (510) to move the second housing part (220) relative to the first housing part (210) by rotating the first rotor (610) and the second rotor (620) together based on the received user input. However, the embodiments supported by the present disclosure are not limited thereto, and the motor assembly (361) of the electronic device (101) exemplarily illustrated and described in FIGS. 9A to 9D may include the configurations exemplarily illustrated and described in FIGS. 6A to 7. The processor (120) may perform the operations exemplarily illustrated and described in FIGS. 8A to 8C.
[0179] Referring to FIGS. 9A and 9B, the coupler (603) may include a third magnet (910) attached to a first rotor (610), one or more third coils (930) arranged along the third magnet (910), a magnetic member (940) facing the third magnet (910), and an elastic member (920) movably coupling the magnetic member (940) to a second rotor (620). For example, the coupler (603) may include a coupler frame (905) for accommodating the one or more third coils (930). The third magnet (910) may be arranged toward the second rotor (620) by being attached to the coupler frame (905). For example, the elastic member (940) can connect the magnetic member (940) and the second rotor (620). The elastic member (940) can movably couple the magnetic member (940) to the second rotor (620) by being elastically deformed.
[0180] According to one embodiment, the processor (120) can separate the first rotor (610) and the second rotor (620) through the elastic member (920) based on one or more third coils (930) through which current flow is bypassed, as shown in FIG. 9A. For example, when no current flows through one or more of the third coils (930), the magnetic member (940) can be separated from the third magnet (910) by the elastic member (920). By separating the magnetic member (940) from the third magnet (910), the first rotor (610) can be separated from the second rotor (620).
[0181] According to one embodiment, the processor (120) may couple the first rotor (610) and the second rotor (620) through magnetic coupling between the magnetic member (940) and the third magnet (910) based on the current flowing in one or more third coils (930), as shown in FIG. 9B. For example, when current flows in one or more third coils (930), the magnetic member (940) may have a magnetic field formed by the one or more third coils (930). By having the magnetic member (940) have a magnetic field, the magnetic member (940) may be attached to the third magnet (910) by the attractive force between the magnetic member (940) and the third magnet (910). Through the elastic member (920), the magnetic member (940) can be moved relative to the magnet (910). Through the magnetic coupling between the magnet (910) and the magnetic member (940), the first rotor (610) can be coupled to the second rotor (620).
[0182] According to one embodiment, the coupler (603) may include a guide structure (950) for guiding a magnetic member (940) to move based on a current flowing in the third coils (930). For example, the guide structure (950) may be formed along the longitudinal direction of the first shaft (611) and / or the second shaft (621), but the embodiment is not limited thereto, and the coupler (603) may include various structures for guiding a magnetic member (940) to move based on a current flowing in one or more of the third coils (930).
[0183] Referring to FIGS. 9C and 9D , the coupler (603) may include one or more fourth coils (960) and metal particles (970) movably disposed between the first rotor (610) and the second rotor (620). For example, the coupler (603) may include a coupler frame (905) for accommodating the one or more fourth coils (960). The coupler frame (905) may be coupled to the first shaft (611) of the first rotor (610) via, for example, a fastening member (980), thereby rotating together with the first shaft (611). For example, the metal particles (970) may be disposed between the first shaft (611) and the second shaft (621). The first shaft (611) and the second shaft (621) may each include a structure that forms a space (S) for accommodating the metal particles (970). For example, the first shaft (611) may include a protrusion (611a) facing the second shaft (621). The second shaft (621) may include a recessed portion (621a) surrounding the protrusion (611a) and for accommodating the metal particles (970) together with the protrusion (611a). However, the embodiments supported in the present disclosure are not limited thereto.
[0184] Referring to FIGS. 9C and 9D , the processor (120) may couple the first rotor (610) and the second rotor (620) based on the current flowing in the one or more fourth coils (960) through the magnetic field provided from the one or more fourth coils (960) and the magnetic force between the metal particles (970). For example, the metal particles (970) may be positioned between the protrusion (611a) of the first shaft (611) and the recessed portion (621a) of the second shaft (621). When current flows in the fourth coils (960), a frictional force may be generated between the metal particles (970) and the second shaft (621) (or the recessed portion (621a)) through the magnetic force by the magnetic field formed from the fourth coils (960). By the frictional force, the first shaft (611) and the second shaft (621) can be coupled to each other. For example, when current flows through one or more of the fourth coils (960), the metal particles (970) can magnetically couple the second shaft (621) and the first shaft (611) based on the current flowing through the one or more of the fourth coils (960). Through the coupling of the second shaft (621) and the first shaft (611), the first rotor (610) and the second rotor (620) can be coupled to each other. However, the embodiments supported in the present disclosure are not limited thereto.
[0185] For example, unlike what is exemplarily illustrated and described in FIGS. 9A to 9D, the coupler (603) may have a fly-wheel clutch structure for selectively coupling the first rotor (610) and the second rotor (620). For example, the flywheel may be configured to rotate together with the first rotor (610) by being coupled to the first rotor (610). The flywheel may include at least one clutch plate configured to come into contact with the second rotor (620). The processor (120) may couple the first rotor (610) and the second rotor (620) through a frictional force between the clutch plate and the second rotor (620) by controlling the flywheel such that the clutch plate comes into contact with the second rotor (620). The processor (120) can separate the first rotor (610) and the second rotor (620) by controlling the flywheel so that the clutch plate is separated from the second rotor (620). However, the embodiments supported by the present disclosure are not limited thereto, and the coupler (603) can include various structures for selectively coupling the first rotor (610) and the second rotor (620).
[0186] Fig. 10 illustrates a driving unit of an exemplary electronic device.
[0187] Referring to FIG. 10, an electronic device (e.g., an electronic device (101) of FIG. 1) may include a housing (e.g., a housing (200) of FIG. 2A) that includes a first housing (e.g., a first housing (210) of FIG. 2A) and a second housing (e.g., a second housing (220) of FIG. 2A) movably coupled to the first housing (210). The electronic device (101) may include a motor assembly (361) disposed within the housing (200), the motor assembly including a first motor (601) that includes a first rotor (610), a second motor (602) that includes a second rotor (620), and a coupler (603) disposed between the first motor (601) and the second motor (602) and configured to selectively couple the first rotor (610) and the second rotor (620). The electronic device (101) may include a gear assembly (510) that is coupled with the first rotor (610) and configured to move the second housing (220) relative to the first housing (210) according to the driving of the motor assembly (361). The electronic device (101) may include a processor (e.g., the processor (120) of FIG. 1). The processor (120) may receive a user input for moving the second housing (220) relative to the first housing (210). The processor (120) may separate the first rotor (610) and the second rotor (620) through the coupler (603) based on the received user input, so as to transmit a first torque to the gear assembly (510) to move the second housing part (220) relative to the first housing part (210) by rotating the first rotor (610) among the first rotor (610) and the second rotor (620).The processor (120) may couple the first rotor (610) and the second rotor (620) through the coupler (603) to transmit a second torque greater than the first torque to the gear assembly (510) to move the second housing part (220) relative to the first housing part (210) by rotating the first rotor (610) and the second rotor (620) together based on the received user input. However, the embodiment supported by the present disclosure is not limited thereto, and the motor assembly (361) of the electronic device (101) exemplarily illustrated and described in FIG. 10 may include the configurations exemplarily illustrated and described in FIGS. 6A to 7 and 9A to 9D. The processor (120) may perform the operations exemplarily illustrated and described in FIGS. 8A to 8C.
[0188] In one embodiment, the electronic device (101) may include another coupler (1000) disposed between the reducer (515) of the gear assembly (510) and the first motor (601) and configured to selectively couple the first shaft (611) of the first motor (601) with the third shaft (511) of the reducer (515). For example, the other coupler (1000) may selectively couple the motor assembly (361) and the gear assembly (510) such that power for driving the housing (200) is transmitted from the motor assembly (361) to the gear assembly (510) based on a user input for movement of the second housing (220) relative to the first housing (210). For example, the processor (120) may control the power management circuit to supply power to another coupler (1000) based on a user input for moving the second housing (220) relative to the first housing (210). However, the embodiment is not limited thereto, and the electronic device (101) may include a plurality of couplers for selective control of the housing (200) and / or the motor assembly (361). The number of couplers included in the driving unit (360) is not limited to the number of the exemplary embodiment described (e.g., two), and more couplers may be included in the driving unit (360).
[0189] Figure 11 is a plan view of an exemplary electronic device showing a screen for selective control of a motor assembly.
[0190] Referring to FIG. 11, an exemplary screen (1101) for selective control of a motor assembly (e.g., the motor assembly (361) of FIG. 3B) of an electronic device (101) may be displayed through a display (230). A processor (e.g., the processor (120) of FIG. 1) of the electronic device (101) may control the display (230) to display, for example, visual objects (1120) for selecting a driving mode of the motor assembly (361) and visual objects (1130) for switching screens. The visual objects (1130) may include, for example, a visual object (1131) for displaying screens for multiple applications, a visual object (1132) for displaying a home screen, and a visual object (1133) for displaying a screen prior to the screen (1101), but the embodiment is not limited thereto.
[0191] For example, the processor (120) may control the coupler (603) to couple a first rotor (e.g., the first rotor (610) of FIG. 6A) and a second rotor (e.g., the second rotor (620) of FIG. 6A) of the motor assembly (361) through the coupler (e.g., the coupler (603) of FIG. 6A) while the second housing (220) moves in a first direction (261) or a second direction (262) opposite to the first direction (261) with respect to the first housing (210), based on a user input via the visual object (1121). For example, the processor (120) may control the coupler (603) to separate the first rotor (610) and the second rotor (620) of the motor assembly (361) through the coupler (603) while the second housing (220) moves in a first direction (261) or a second direction (262) opposite to the first direction (261) relative to the first housing (210), based on user input via the visual object (1123). For example, the processor (120) may control the coupler (603) to selectively couple the first rotor (610) and the second rotor (620) based on a temperature and / or load inside the motor assembly (361) while the second housing (220) moves in a first direction (261) or a second direction (262) opposite to the first direction (261) relative to the first housing (210), based on user input via the visual object (1122).
[0192] Figure 12 is a graph showing the torque transmitted to the gear assembly according to the rotational angle of the rotor of the motor assembly.
[0193] Referring to FIG. 12, the horizontal axis of the graph (1200) represents the rotational angle of a first rotor (e.g., the first rotor (610) of FIG. 5a) coupled with a gear assembly (e.g., the gear assembly (510) of FIG. 5a). The vertical axis of the graph (1200) represents the torque transmitted from a motor assembly (e.g., the motor assembly (361) of FIG. 3b) to the gear assembly (510).
[0194] Graph (1210) represents the torque transmitted to the gear assembly (510) according to the rotation angle of the shaft (530) and the magnet (540) exemplarily illustrated and described in FIGS. 5A to 5C. By the rotation of the magnet (540) having a relatively long length, the shaft (530) coupled with the magnet (540) can transmit a second torque located within a range between the torque (T1) and the torque (T2) to the gear assembly (510), but noise generated from the motor assembly (361) may increase.
[0195] Graph (1220) represents the torque transmitted to the gear assembly (510) according to the rotation angle of the first rotor (610) and the second rotor (620), in a state where the first rotor (610) and the second rotor (620) are coupled through the coupler (603) as exemplarily illustrated and described in FIGS. 6A to 6C. Referring to graph (1220), a torque within a range substantially identical to that of graph (1210) can be transmitted to the gear assembly (510). When referring to the graph (1210), in the graph (1220), the torque ripple generated from the motor assembly (361) can be reduced by about 3% to 5% compared to the graph (1210) due to the relatively high concentricity between the first rotor (610) and the second rotor (620) in a state where the first rotor (610) and the second rotor (620) are coupled through the coupler (603).
[0196] Graph (1230) represents the torque transmitted to the gear assembly (510) according to the rotation angle of the first rotor (610), in a state where the first rotor (610) and the second rotor (620) are separated through the coupler (603), as exemplarily illustrated and described in FIGS. 6A to 6C. Unlike graphs (1210) and (1220), a first torque located within a range between torque (T3) and torque (T4) that is lower than a second torque located within a range between torque (T1) and torque (T2) can be transmitted to the gear assembly (510) through the first rotor (610), but noise generated from the motor assembly (361) can be reduced. When referring to the graph (1210), in the graph (1230), the torque ripple generated from the motor assembly (361) can be reduced by about 50% to 60% compared to the graph (1210) due to the relatively short rotation of the first rotor (610) within the state where the first rotor (610) and the second rotor (620) are separated by the coupler (603).
[0197] As described above, an electronic device (e.g., electronic device (101) of FIG. 1) may include a housing (e.g., housing (200) of FIG. 2a) including a first housing part (e.g., first housing (210) of FIG. 2a) and a second housing part (e.g., second housing (220) of FIG. 2a) movably coupled to the first housing part. The electronic device may include a motor assembly disposed within the housing, the motor assembly including a first motor (e.g., a first motor (601) of FIG. 6A) including a first rotor (e.g., a first rotor (610) of FIG. 6A), a second motor (e.g., a second motor (602) of FIG. 6A) including a second rotor (e.g., a second rotor (620) of FIG. 6A), and a coupler (e.g., a coupler (603) of FIG. 6A) disposed between the first motor and the second motor and configured to selectively couple the first rotor and the second rotor. The electronic device may include a gear assembly (e.g., a gear assembly (510) of FIG. 5A) coupled to the first rotor and configured to move the second housing part relative to the first housing part in response to driving of the motor assembly. The electronic device may include at least one processor (e.g., processor (120) of FIG. 1) including a processing circuit and a memory (e.g., memory (130) of FIG. 1) including one or more storage media storing instructions. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to receive a user input for moving the second housing part relative to the first housing part.The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to, based on the received user input, separate the first rotor from the second rotor through the coupler to transmit a first torque to the gear assembly to move the second housing part relative to the first housing part by rotating the first rotor. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to, based on the received user input, couple the first rotor to the second rotor through the coupler to transmit a second torque to the gear assembly to move the second housing part relative to the first housing part by rotating the first rotor together.
[0198] For example, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the first motor to rotate the first rotor based on the first rotor and the second rotor being separated via the coupler. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the first motor and the second motor to rotate the first rotor and the second rotor together based on the first rotor and the second rotor being coupled via the coupler.
[0199] For example, the first motor may further include one or more first coils surrounding the first rotor (e.g., one or more first coils (651) of FIG. 6A). The second motor may further include one or more second coils surrounding the second rotor (e.g., one or more second coils (652) of FIG. 6A). The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to transmit the first torque to the gear assembly based on a current flowing in the one or more first coils while the first rotor and the second rotor are separated via the coupler. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to transmit a second torque to the gear assembly, the second torque being greater than the first torque, based on current flowing through the one or more first coils and the one or more second coils, while the first rotor and the second rotor are coupled through the coupler.
[0200] For example, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to separate the first rotor and the second rotor based on identifying a first user input for reducing noise generated from the motor assembly. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to couple the first rotor and the second rotor based on identifying a second user input for increasing torque transmitted to the gear assembly.
[0201] For example, the electronic device may further include a first sensor configured to detect a temperature of the motor assembly (e.g., the first sensor 681 of FIG. 6C). The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to identify the temperature of the motor assembly detected via the first sensor. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to separate the first rotor and the second rotor based on identifying the temperature as being above a reference temperature. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to couple the first rotor and the second rotor based on identifying the temperature as being below the reference temperature.
[0202] For example, the first rotor may include a first shaft coupled to the gear assembly (e.g., the first shaft (611) of FIG. 6A), and first magnetic poles (e.g., the first magnetic poles (613) of FIG. 6B) having the same polarity as each other, and a first magnet (e.g., the first magnet (612) of FIG. 6A) surrounding the first shaft to rotate the first shaft. The second rotor may include a second shaft separate from the first shaft (e.g., the second shaft (621) of FIG. 6A), and second magnetic poles (e.g., the third magnetic poles (623) of FIG. 6B) having the same polarity as the first magnetic poles, and a second magnet (e.g., the second magnet (622) of FIG. 6A) surrounding the second shaft to rotate the second shaft. The number of the above first stimuli may correspond to the number of the above second stimuli.
[0203] For example, the electronic device may further include a second sensor disposed within the motor assembly. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to identify, based on the received user input, whether the first magnet and the second magnet are positioned such that the first and second poles are aligned via the second sensor. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the first motor to rotate the first rotor to align the first and second poles based on identifying that the first and second poles are misaligned. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the first motor to rotate the first rotor to align the first and second poles based on identifying that the first and second poles are aligned. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to couple the first and second rotors to transmit the second torque to the gear assembly based on identifying that the first and second poles are aligned.
[0204] For example, the coupler may include a third magnet attached to the first rotor, one or more third coils (e.g., one or more third coils (930) of FIG. 9A) disposed along the third magnet (e.g., the third magnet (910) of FIG. 9A), a magnetic member facing the third magnet (e.g., the magnetic member (940) of FIG. 9A), and an elastic member (e.g., the elastic member (920) of FIG. 9A) movably coupling the magnetic member to the second rotor. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to couple the first rotor and the second rotor via magnetic coupling between the magnetic member and the third magnet based on a current flowing through the one or more third coils. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to separate the first rotor and the second rotor through the elastic member based on the one or more third coils through which current flow is bypassed.
[0205] For example, the coupler may further include a guide structure for guiding the magnetic member to move based on the current flowing in the one or more third coils.
[0206] For example, the coupler may include one or more fourth coils (e.g., one or more fourth coils (940) of FIG. 9C) and metal particles (e.g., metal particles (970) of FIG. 9C) movably disposed between the first rotor and the second rotor. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to couple the first rotor and the second rotor through a magnetic field provided from the one or more fourth coils and a magnetic force between the metal particles, based on a current flowing through the one or more fourth coils. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to separate the first rotor and the second rotor through movement of the metal particles, based on the one or more fourth coils through which current flow is bypassed.
[0207] For example, the first rotor may include a first shaft that provides an axis of rotation of the first rotor. The second rotor may include a second shaft that provides an axis of rotation of the second rotor and is separated from the first shaft. The coupler may be configured to couple the first rotor and the second rotor such that the axis of rotation of the first rotor provided by the first shaft corresponds to the axis of rotation of the second rotor provided by the second shaft.
[0208] For example, the gear assembly may include a reducer including a third shaft (e.g., the third shaft (511) of FIG. 6A) that meshes with the first shaft and is configured to rotate by the rotation of the first shaft. The gear assembly may include a pinion gear (e.g., the pinion gear (362) of FIG. 3B) coupled with the third shaft so as to be rotated by the third shaft. The gear assembly may include a rack gear (e.g., the rack gear (363) of FIG. 3B) that meshes with the pinion gear and is arranged along a direction of movement of the second housing part relative to the first housing part within the housing so as to move the second housing part relative to the first housing part in accordance with the rotation of the pinion gear. A rotational speed of the third shaft may be less than a rotational speed of the first shaft.
[0209] For example, the electronic device may further include another coupler (e.g., another coupler (1000) of FIG. 10) disposed between the reducer and the first motor and configured to selectively couple the first shaft and the third shaft.
[0210] For example, the coupler may have a flywheel clutch structure for selectively coupling the first rotor and the second rotor.
[0211] For example, the first rotor and the second rotor within the motor assembly may be coaxial with each other.
[0212] An electronic device according to the above may include a housing comprising a first housing part and a second housing part movably coupled with respect to the first housing part. The electronic device may include a motor assembly disposed within the housing, the motor comprising a first motor including a first rotor configured to move the second housing part with respect to the first housing part, a second motor including a second rotor, and a coupler disposed between the first motor and the second motor and configured to selectively couple the first rotor and the second rotor. The electronic device may include at least one processor including a processing circuit, and a memory including one or more storage media storing instructions. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to separate the first rotor and the second rotor based on identifying a first user input for reducing noise generated from the motor assembly. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to control the coupler to couple the first rotor and the second rotor based on identifying a second user input for increasing torque of the first rotor.
[0213] For example, the first motor may further include one or more first coils surrounding the first rotor. The second motor may further include one or more second coils surrounding the second rotor. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to rotate the first rotor among the first rotor and the second rotor through current flowing through the one or more first coils based on the identified first user input. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to rotate the first rotor and the second rotor together based on current flowing through the one or more first coils and the one or more second coils based on the identified second user input.
[0214] For example, the first rotor may include a first shaft providing an axis of rotation of the first rotor, and a first magnet surrounding the first shaft, the first magnet including first magnetic poles having the same polarity as each other and rotating the first shaft. The second rotor may include a second shaft providing an axis of rotation of the second rotor, the second shaft being separate from the first shaft, and a second magnet including second magnetic poles having the same polarity as the first magnetic poles and rotating the second shaft. The number of the first magnetic poles may correspond to the number of the second magnetic poles.
[0215] For example, the coupler may be configured to couple the first rotor and the second rotor such that the rotational axis of the first rotor provided from the first shaft corresponds to the rotational axis of the second rotor provided from the second shaft.
[0216] For example, the coupler may include a third magnet attached to the first rotor, one or more third coils disposed along the third magnet, a magnetic member facing the third magnet, and an elastic member fastening the magnetic member to the second rotor. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to couple the first rotor and the second rotor via magnetic coupling between the magnetic member and the third magnet based on current flowing through the one or more third coils. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to separate the first rotor and the second rotor via a restoring force of the elastic member based on the one or more third coils through which current flow is bypassed.
[0217] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, electronic devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.
[0218] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.
[0219] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).
[0220] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.
[0221] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.
[0222] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each 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, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.
Claims
1. In an electronic device (101), A housing (200) comprising a first housing part (210) and a second housing part (220) movably coupled to the first housing part (210); A motor assembly (361) disposed within the housing (200), comprising a first motor (601) including a first rotor (610), a second motor (602) including a second rotor (620), and a coupler (603) disposed between the first motor (601) and the second motor (602) and configured to selectively couple the first rotor (610) and the second rotor (620); A gear assembly (510) interlocked with the first rotor (610) and configured to move the second housing part (220) relative to the first housing part (210) according to the driving of the motor assembly (361); At least one processor (120) comprising a processing circuit; and A memory (130) including one or more storage media storing instructions, wherein the instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Causing the coupler (603) to be controlled so that the operation of the first rotor (610) and the operation of the second rotor (620) are separated or connected to each other, depending on at least one of the state of the electronic device (101) or a user input. Electronic device (101).
2. In paragraph 1, The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Controlling the first motor (601) to rotate the first rotor (610) based on the first rotor (610) and the second rotor (620) separated through the coupler (603); and Based on the first rotor (610) and the second rotor (620) coupled through the coupler (603), the first motor (601) and the second motor (602) are controlled to rotate the first rotor (610) and the second rotor (620) together. Electronic device (101).
3. In paragraph 1 or 2, The above first motor (601) is One or more first rotors (610) surrounding the first rotor Including more coils (651), The above second motor (602) is, It further includes one or more second coils (652) surrounding the second rotor (620), The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: In a state where the first rotor (610) and the second rotor (620) are separated through the coupler (603), a first torque is transmitted to the gear assembly (510) based on the current flowing in the one or more first coils (651); and In a state where the first rotor (610) and the second rotor (620) are coupled through the coupler (603), a second torque greater than the first torque is transmitted to the gear assembly (510) based on the current flowing in the one or more first coils (651) and the one or more second coils (652). Electronic device (101).
4. In any one of paragraphs 1 to 3, The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Controlling the coupler (603) to separate the first rotor (610) and the second rotor (620) based on identifying a first user input for reducing noise generated from the motor assembly (361); Based on identifying a second user input for increasing the torque transmitted to the gear assembly (510), causing the coupler (603) to be controlled to couple the first rotor (610) and the second rotor (620). Electronic device (101).
5. In any one of paragraphs 1 to 4, Further comprising a first sensor (681) configured to detect the temperature of the motor assembly (361); The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Identifying the temperature of the motor assembly (361) detected through the first sensor (681); Based on identifying the temperature above the reference temperature, controlling the coupler (603) to separate the first rotor (610) and the second rotor (620); and Based on identifying the temperature below the reference temperature, causing the coupler (603) to be controlled to couple the first rotor (610) and the second rotor (620). Electronic device (101).
6. In any one of paragraphs 1 to 5, The above first rotor (610) is A first shaft (611) coupled with the above gear assembly (510); and It includes first magnets (612) surrounding the first shaft (611) to rotate the first shaft (611), and first stimuli (613) having the same polarity as each other, The above second rotor (620) is A second shaft (621) separated from the first shaft (611); and It includes second stimuli (623) having the same polarity as the first stimuli (613), and a second magnet (622) surrounding the second shaft (621) to rotate the second shaft (621). The number of the above first stimuli (613) is Corresponding to the number of the above second stimuli (623), Electronic device (101).
7. In paragraph 6, Further comprising a second sensor (682) disposed within the motor assembly (361), The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Based on the received user input, it is identified whether the first magnet (612) and the second magnet (622) are positioned so that the first stimuli (613) and the second stimuli (623) are aligned through the second sensor (682); Based on identifying that the first stimuli (613) and the second stimuli (623) are misaligned, controlling the first motor (601) to rotate the first rotor (610) to align the first stimuli (613) and the second stimuli (623); and Based on identifying that the first stimuli (613) and the second stimuli (623) are aligned, causing the coupler (603) to be controlled to couple the first rotor (610) and the second rotor (620) to transmit the second torque to the gear assembly (510). Electronic device (101).
8. In any one of paragraphs 1 to 7, The above coupler (603) is A third magnet (910) attached to the first rotor (610); One or more third coils (930) arranged along the third magnet (910); A magnetic member (940) facing the third magnet (910); and It includes an elastic member (920) that movably couples the magnetic member (940) to the second rotor (620), The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Based on the current flowing in the one or more third coils (930), coupling the first rotor (610) and the second rotor (620) through magnetic coupling between the magnetic member (940) and the third magnet (910); and Based on the one or more third coils (930) through which the current flow is bypassed, causing the first rotor (610) and the second rotor (620) to be separated through the elastic member (920), Electronic device (101).
9. In any one of paragraphs 1 to 8, The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Receiving a user input to move the second housing part (220) relative to the first housing part (210); Based on the user input received above: Separating the first rotor (610) and the second rotor (620) through the coupler (603) so as to transmit a first torque to the gear assembly (510) to move the second housing part (220) relative to the first housing part (210) by rotating the first rotor (610) among the first rotor (610) and the second rotor (620); and To cause the first rotor (610) and the second rotor (620) to be coupled through the coupler (603) so as to transmit a second torque greater than the first torque to the gear assembly (510) to move the second housing part (220) relative to the first housing part (210) by rotating the first rotor (610) and the second rotor (620) together. Electronic device (101).
10. In any one of paragraphs 1 to 9, The above coupler (603) is one or more fourth coils (960); and It includes metal particles (970) that are movably arranged between the first rotor (610) and the second rotor (620), The above instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Based on the current flowing in the one or more fourth coils (960), coupling the first rotor (610) and the second rotor (620) through the magnetic field provided from the one or more fourth coils (960) and the magnetic force between the metal particles (970); and Based on the one or more fourth coils (960) through which the current flow is bypassed, causing the first rotor (610) and the second rotor (620) to separate through the movement of the metal particles (970), Electronic device (101).
11. In any one of paragraphs 1 to 10, The above first rotor (610) is It includes a first shaft (611) that provides a rotation axis of the first rotor (610), The above second rotor (620) is Provides a rotation axis of the second rotor (620) and includes a second shaft (621) separated from the first shaft (611), The above coupler (603) is The first rotor (610) and the second rotor (620) are configured to be coupled so that the rotational axis of the first rotor (610) provided by the first shaft (611) corresponds to the rotational axis of the second rotor (620) provided by the second shaft (621). Electronic device (101).
12. In paragraph 11, The above gear assembly (510) is A reducer (515) including a third shaft (511) that is configured to be engaged with the first shaft (611) and rotated by the rotation of the first shaft (611); A pinion gear (362) coupled with the third shaft (511) so as to be rotated by the third shaft (511); and A rack gear (363) is disposed along the movement direction of the second housing part (220) relative to the first housing part (210) within the housing (200) so as to mesh with the pinion gear (362) and move the second housing part (220) relative to the first housing part (210) according to the rotation of the pinion gear (362). The rotation speed of the third shaft (511) is Less than the rotation speed of the first shaft (611), Electronic device (101).
13. In paragraph 12, Further comprising another coupler (1000) arranged between the reducer (515) and the first motor (601) and configured to selectively couple the first shaft (611) and the third shaft (511). Electronic device (101).
14. In any one of paragraphs 1 to 13, The above coupler (603) is Having a flywheel clutch structure for selectively coupling the first rotor (610) and the second rotor (620), Electronic device (101).
15. In the electronic device (101), A housing (200) comprising a first housing part (210) and a second housing part (220) movably coupled to the first housing part (210); A motor assembly (361) comprising a first motor (601) disposed within the housing (200) and configured to move the second housing part (220) relative to the first housing part (210), a second motor (602) comprising a second rotor (620), and a coupler (603) disposed between the first motor (601) and the second motor (602) and configured to selectively couple the first rotor (610) and the second rotor (620); At least one processor (120) comprising a processing circuit; and A memory (130) comprising one or more storage media storing instructions, wherein the instructions, when individually or collectively executed by the at least one processor (120), cause the electronic device (101) to: Controlling the coupler (603) to separate the first rotor (610) and the second rotor (620) based on identifying a first user input for reducing noise generated from the motor assembly (361); Based on identifying a second user input for increasing the torque of the first rotor (610), causing the coupler (603) to be controlled to couple the first rotor (610) and the second rotor (620). Electronic device (101).
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