Patent Publication Number: US-2022236771-A1

Title: Foldable keyboard cover

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/KR2020/016533 designating the United States, filed on Nov. 20, 2020, in the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application No. 10-2019-0150294, filed on Nov. 21, 2019, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. 
    
    
     BACKGROUND 
     Field 
     The disclosure relates to a foldable keyboard cover including a physical keyboard and foldable in a way to become a case of a foldable electronic device. 
     Description of Related Art 
     As so-called foldable electronic devices that are foldable are continuously released, the demand for a case capable of protecting such a foldable electronic device is also increased. Furthermore, users who replace conventional computers, such as a desktop and a notebook, by combining a physical keyboard with a tablet are also recently increasing. 
     In such a situation, the need for an accessory including a physical keyboard while performing a case function, which may be used in a foldable electronic device, is increasing. 
     SUMMARY 
     Embodiments of the disclosure may provide a foldable keyboard cover in which a foldable cover designed to be foldable and to be coupled with a foldable electronic device in a sense of unity and a physical keyboard connected to the foldable electronic device and capable of a physical key input are combined. 
     A foldable keyboard cover configured to be attached to an electronic device in which a first housing and a second housing are connected to be foldable by a hinge according to various example embodiments of the disclosure includes: a first cover configured to face the first housing of the electronic device and including a first attachment part configured to be attached to the first housing, a second cover configured to face the second housing of the electronic device and including a second attachment part configured to be attached to the second housing, a first folding part configured to face the hinge part of the electronic device and to connect the first cover and the second cover to be foldable about a first folding axis, and a physical keyboard including a first keyboard disposed in at least some area of the first cover and a second keyboard disposed in at least some area of the second cover. The first folding part may include a material having an elastic force wherein the first cover and the second cover are configured to cover the first housing and the second housing in a state in which the first housing of the electronic device and the second housing are folded. 
     A foldable keyboard cover configured to be attached to an electronic device in which a first housing and a second housing are connected to be foldable by a hinge according to various example embodiments of the disclosure includes: a first cover configured to face the first housing of the electronic device and including a first attachment part configured to be attached to the first housing, a second cover configured to face the second housing of the electronic device and including a second attachment part configured to be attached to the second housing, a first folding part configured to face the hinge of the electronic device and connect the first cover and the second cover to be foldable about a first folding axis, and a physical keyboard including a first keyboard disposed in at least some area of the first cover and a second keyboard disposed in at least some area of the second cover. The first attachment part of the first cover and the second attachment part of the second cover may be configured to be attached to the first housing and second housing of the electronic device on a surface opposite to a surface on which a display of the electronic device is disposed. 
     According to various example embodiments of the disclosure, the foldable keyboard cover can be combined with a foldable electronic device in a sense of unity, and can protect the foldable electronic device against an external impact, and for example, can prevent and/or reduce an external alien substance from entering a hinge portion by protecting the hinge portion, that is, a weak portion of the foldable electronic device. 
     Furthermore, the usability of the foldable electronic device can be increased by providing a key input interface through a physical keyboard and supporting the foldable electronic device so that the state in which the foldable keyboard cover and the foldable electronic device form a specified angle can be maintained. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In relation to the description of the drawings, the same or similar reference numerals may be used with respect to the same or similar elements. Additionally, the above and other aspects, features and advantages of certain embodiments of the present disclosure will be more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which: 
         FIG. 1  is a block diagram illustrating an example electronic device within a network environment according to various embodiments; 
         FIG. 2  is a diagram illustrating an example foldable electronic device which may be combined with a foldable keyboard cover according to various embodiments; 
         FIG. 3  is a diagram illustrating an example foldable keyboard cover according to various embodiments; 
         FIG. 4  is a diagram illustrating an example form in which the foldable electronic device and the foldable keyboard cover are combined according to various embodiments; 
         FIG. 5  is a diagram illustrating the state in which the foldable electronic device and the foldable keyboard cover are combined according to various embodiments; 
         FIG. 6A  is a cross-sectional view of the foldable keyboard cover according to various embodiments; 
         FIG. 6B  is a diagram illustrating an example form in which the foldable keyboard cover is folded according to various embodiments; 
         FIGS. 7A and 7B  are diagrams illustrating an example process of the foldable keyboard cover standing according to various embodiments; and 
         FIGS. 8A and 8B  are diagrams illustrating example adjustment of a standing angle of the foldable electronic device through the foldable keyboard cover according to various embodiments. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  is a block diagram illustrating an example electronic device  101  in a network environment  100  according to various embodiments. Referring to  FIG. 1 , the electronic device  101  in the network environment  100  may communicate with an electronic device  102  via a first network  198  (e.g., a short-range wireless communication network), or an electronic device  104  or a server  108  via a second network  199  (e.g., a long-range wireless communication network). According to an embodiment, the electronic device  101  may communicate with the electronic device  104  via the server  108 . According to an embodiment, the electronic device  101  may include a processor  120 , memory  130 , an input device  150 , a sound output device  155 , a display device  160 , an audio module  170 , a sensor module  176 , an interface  177 , a haptic module  179 , a camera module  180 , a power management module  188 , a battery  189 , a communication module  190 , a subscriber identification module (SIM)  196 , or an antenna module  197 . In various embodiments, at least one (e.g., the display device  160  or the camera module  180 ) of the components may be omitted from the electronic device  101 , or one or more other components may be added in the electronic device  101 . In various embodiments, some of the components may be implemented as single integrated circuitry. For example, the sensor module  176  (e.g., a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented as embedded in the display device  160  (e.g., a display). 
     The processor  120  may execute, for example, 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  coupled with the processor  120 , and may perform various data processing or computation. According to an embodiment, as at least part of the data processing or computation, the processor  120  may load a command or data received from another component (e.g., the sensor module  176  or the communication module  190 ) in volatile memory  132 , process the command or the data stored in the volatile memory  132 , and store resulting data in non-volatile memory  134 . According to an embodiment, the processor  120  may include a main processor  121  (e.g., a central processing unit (CPU) or an application processor (AP)), and an auxiliary processor  123  (e.g., a graphics processing unit (GPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor  121 . Additionally or alternatively, the auxiliary processor  123  may be adapted to consume less power than the main processor  121 , or to be specific to a specified function. The auxiliary processor  123  may be implemented as separate from, or as part of the main processor  121 . 
     The auxiliary processor  123  may control at least some of functions or states related to at least one component (e.g., the display device  160 , the sensor module  176 , or the communication module  190 ) among the components of the electronic device  101 , instead 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 state (e.g., executing an application). According to an embodiment, the auxiliary processor  123  (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module  180  or the communication module  190 ) functionally related to the auxiliary processor  123 . 
     The memory  130  may store various data used by at least one component (e.g., the processor  120  or the sensor module  176 ) of the electronic device  101 . The various data may include, for example, software (e.g., the program  140 ) and input data or output data for a command related thereto. The memory  130  may include the volatile memory  132  or the non-volatile memory  134 . 
     The program  140  may be stored in the memory  130  as software, and may include, for example, an operating system (OS)  142 , middleware  144 , or an application  146 . 
     The input device  150  may receive a command or data to be used by other component (e.g., the processor  120 ) of the electronic device  101 , from the outside (e.g., a user) of the electronic device  101 . The input device  150  may include, for example, a microphone, a mouse, a keyboard, or a digital pen (e.g., a stylus pen). 
     The sound output device  155  may output sound signals to the outside of the electronic device  101 . The sound output device  155  may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record, and the receiver may be used for an incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker. 
     The display device  160  may visually provide information to the outside (e.g., a user) of the electronic device  101 . The display device  160  may include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment, the display device  160  may include touch circuitry adapted to detect a touch, or sensor circuitry (e.g., a pressure sensor) adapted to measure the intensity of force incurred by the touch. 
     The audio module  170  may convert a sound into an electrical signal and vice versa. According to an embodiment, the audio module  170  may obtain the sound via the input device  150 , or output the sound via the sound output device  155  or a headphone of an external electronic device (e.g., an electronic device  102 ) directly (e.g., wiredly) or wirelessly coupled with the electronic device  101 . 
     The sensor module  176  may detect an operational state (e.g., power or temperature) of the electronic device  101  or an environmental state (e.g., a state of a user) external to the electronic device  101 , and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module  176  may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. 
     The interface  177  may support one or more specified protocols to be used for the electronic device  101  to be coupled with the external electronic device (e.g., the electronic device  102 ) directly (e.g., wiredly) or wirelessly. According to an embodiment, the interface  177  may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface. 
     A connecting terminal  178  may include a connector via which the electronic device  101  may be physically connected with the external electronic device (e.g., the electronic device  102 ). According to an embodiment, the connecting terminal  178  may include, for example, a HDMI connector, a USB connector, a SD card connector, or an audio connector (e.g., a headphone connector). 
     The haptic module  179  may convert an electrical signal into a mechanical stimulus (e.g., a vibration or a movement) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module  179  may include, for example, a motor, a piezoelectric element, or an electric stimulator. 
     The camera module  180  may capture a still image or moving images. According to an embodiment, the camera module  180  may include one or more lenses, image sensors, image signal processors, or flashes. 
     The power management module  188  may manage power supplied to the electronic device  101 . According to an embodiment, the power management module  188  may be implemented as at least part of, for example, a power management integrated circuit (PMIC). 
     The battery  189  may supply power to at least one component of the electronic device  101 . According to an embodiment, the battery  189  may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell. 
     The communication module  190  may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device  101  and the external electronic device (e.g., the electronic device  102 , the electronic device  104 , or the server  108 ) and performing communication via the established communication channel. The communication module  190  may include one or more communication processors that are operable independently from the processor  120  (e.g., the application processor (AP)) and supports a direct (e.g., wired) communication or a wireless communication. According to an 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 (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device via the first network  198  (e.g., a short-range communication network, such as Bluetooth™, wireless-fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or the second network  199  (e.g., a long-range communication network, such as a cellular network, the Internet, or a computer network (e.g., LAN or wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication module  192  may identify and authenticate the electronic device  101  in a communication network, such as the first network  198  or the second network  199 , using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module  196 . 
     The antenna module  197  may transmit or receive a signal or power to or from the outside (e.g., the external electronic device) of the electronic device  101 . According to an embodiment, the antenna module  197  may include an antenna including a radiating element including a conductive material or a conductive pattern formed in or on a substrate (e.g., PCB). According to an embodiment, the antenna module  197  may include a plurality of antennas. In such a case, at least one antenna appropriate for a communication scheme used in the communication network, such as the first network  198  or the second network  199 , may be selected, for example, by the communication module  190  (e.g., the wireless communication module  192 ) from the plurality of antennas. The signal or the power may then be transmitted or received between the communication module  190  and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module  197 . 
     At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)). 
     According to an embodiment, commands or data may be transmitted or received between the electronic device  101  and the external electronic device  104  via the server  108  coupled with the second network  199 . Each of the electronic devices  102  and  104  may be a device of a same type as, or a different type, from the electronic device  101 . According to an embodiment, all or some of operations to be executed at the electronic device  101  may be executed at one or more of the external electronic devices  102 ,  104 , or  108 . For example, if the electronic device  101  should perform a function or a service automatically, or in response to a request from a user or another device, the electronic device  101 , instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device  101 . The electronic device  101  may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, or client-server computing technology may be used, for example. 
       FIG. 2  is a diagram illustrating an example foldable electronic device which may be combined with a foldable keyboard cover according to various embodiments. 
     With reference to  FIG. 2 , the foldable electronic device may include a first housing  210 , a second housing  230 , a hinge part  250  and a display  270 . The first housing  210  and the second housing  230  may be disposed on both sides of a folding axis (e.g., line A-A in  FIG. 2 ), and may have shapes generally symmetrical to each other with respect to the folding axis. 
     The first housing  210  and the second housing  230  may be connected to be foldable centering around the folding axis by the hinge part  250 . The first housing  210  and the second housing  230  may have a different angle or distance formed by the first housing  210  and the second housing  230  in an unfolding state (e.g.,  FIG. 2( a ) ), an intermediate state (e.g.,  FIG. 2( b ) ), or a folding state (e.g.,  FIG. 2( c ) ). 
     Parts for performing various functions of the foldable electronic device may be embedded in at least one of the first housing  210  and the second housing  230 . Examples of such parts may include a processor (e.g., the processor  120  in  FIG. 1 ), a memory (e.g., the memory  130  in  FIG. 1 ), an audio module (e.g., the audio module  170  in  FIG. 1 ), a sensor module (e.g., the sensor module  176  in  FIG. 1 ), a communication module (e.g., the communication module  190  in  FIG. 1 ), a battery (e.g., the battery  189  in  FIG. 1 ), etc. 
     The display  270  (e.g., the display device  1600  in  FIG. 1 ) may be elongated to an area that connects the first housing  210  and the second housing  230 , and may be disposed on the first housing  210  and the second housing  230 . The display  270  may refer, for example, to the display  270  at least some area of which may be deformed in a plane or a curved surface. According to various embodiments, the display  270  may be a foldable display which may operate normally although the first housing  210  and the second housing  230  are repeatedly folded or unfolded. 
     Hereinafter, a direction in which the display  270  is disposed in the foldable electronic device is defined as a front, and a direction opposite to the display  270  may be referred to as a rear. 
       FIG. 3  is a diagram illustrating an example foldable keyboard cover according to various embodiments. 
     According to various embodiments, the foldable keyboard cover may include a first cover  310 , a second cover  330 , a first folding part  350  and a physical keyboard  320 . 
     According to various embodiments, the first cover  310  may be formed in a sheet shape. The first cover  310  may be formed to have an area corresponding to the area of the first housing  210  of the foldable electronic device so that the first housing  210  of the foldable electronic device can be protected. The end of the first cover  310  and the end of the first housing  210  may be matched with each other. The first cover  310  may be manufactured using various materials. For example, the first cover  310  may be manufactured using a material, such as natural/artificial leather or natural/synthetic fiber. 
     According to various embodiments, the second cover  330  may be formed in a sheet shape. The second cover  330  may be formed to have an area corresponding to the area of the second housing  230  of the foldable electronic device so that the second housing  230  of the foldable electronic device can be protected. The end of the second cover  330  and the end of the second housing  230  may be matched with each other. The second cover  330  may be manufactured using various materials. For example, the second cover  330  may be manufactured using a material, such as natural/artificial leather or natural/synthetic fiber. 
     According to various embodiments, the first folding part  350  may connect the first cover  310  and the second cover  330  to be foldable. The first folding part  350  is a portion facing the hinge part  250  of the foldable electronic device, and may cover the hinge part  250  in the state in which the foldable electronic device and the foldable keyboard cover have been combined. The first folding part  350  may connect the first cover  310  and the second cover  330  to be foldable centering around a first folding axis (e.g., line A-A in  FIG. 3 ). The first folding part  350  may be manufactured using a flexible material so that a characteristic thereof can be maintained without any damage although the first folding part  350  is repeatedly folded or unfolded. The first cover  310  and the second cover  330  may have a different angle or distance formed by the first cover  310  and the second cover  330  in an unfolding state (e.g.,  FIG. 3( a ) ), an intermediate state (e.g.,  FIG. 3( b ) ), and a folding state (e.g.,  FIG. 3( c ) ). 
     According to various embodiments, the physical keyboard  320  may be various types of keyboards equipped with a switch capable of recognizing a physical force applied by a user. For example, the physical keyboard  320  may be a membrane type of keyboard including a membrane-switch or a pantograph type of keyboard including a scissor-switch. In addition, the physical keyboard  320  according to various embodiments of the disclosure may be various types of keyboards capable of receiving a physical force. 
     According to various embodiments, the physical keyboard  320  may include a first keyboard  321  and a second keyboard  322 . The first keyboard  321  may be disposed in at least some area of the first cover  310 . The second keyboard  322  may be disposed in at least some area of the second cover  330 . The first keyboard  321  may include at least some of a plurality of keys included in the physical keyboard  320 . The second keyboard  322  may include the remaining keys other than the keys included in the first keyboard  321  among the plurality of keys included in the physical keyboard  320 . The first keyboard  321  disposed in the first cover  310  may have a state covered by a first support part  361  of a cover stand  360 . As illustrated in  FIG. 7A , when the first support part  361  and a second support part  362  are folded by a second folding part  363  of the cover stand  360 , the first keyboard  321  of the physical keyboard  320  may be exposed to the outside. 
     According to various embodiments, the cover stand  360  may support the foldable electronic device at a specified angle with respect to the foldable keyboard cover. The cover stand  360  may include the first support part  361 , the second support part  362  and the second folding part  363 . 
     According to various embodiments, the first support part  361  may be disposed to correspond to at least some area of the first cover  310 . 
     According to various embodiments, the second support part  362  may be connected to the first cover  310 . At least one surface of the second support part  362  and at least one surface of the first cover  310  may be connected. The connected portion may connect the first cover  310  and the second support part  362  in the state in which the first cover  310  and the second support part  362  are permitted to form a specified angle. The connected portion may be disposed to correspond to the remaining portion other than a portion of the first cover  310  that corresponds to the first support part  361 . The area of the first support part  361  and second support part  362  of the cover stand  360  may correspond to the area of the first cover  310 . According to various embodiments, an area formed by the first support part  361  and second support part  362  of the cover stand  360  may not correspond to an area of the first cover  310 . For example, the area of the first support part  361  and second support part  362  of the cover stand  360  may be greater than or smaller than the area of the first cover  310 . 
     According to various embodiments, the second folding part  363  may connect the first support part  361  and the second support part  362  in a way to be foldable centering around a second folding axis (e.g., refer to line B-B in  FIGS. 7A and 7B ). The second folding axis may be a rotation axis elongating in a direction perpendicular to the first folding axis. 
     According to various embodiments, a stand support part  340  may support the front of the foldable electronic device stood by the cover stand  360 . The stand support part  340  may have a protrusion form protruding from and formed on the first cover  310  and the second cover  330 . 
       FIG. 4  is a diagram illustrating an example form in which the foldable electronic device and the foldable keyboard cover are combined according to various embodiments. 
     As illustrated in  FIG. 4 , the foldable electronic device and the foldable keyboard cover may be combined. A first attachment part  361 - 1  and  362 - 1  of the first cover  310  may be attached to the rear of the first housing  210 . A second attachment part  330 - 1  of the second cover  330  may be attached to the rear of the second housing  230 . For example, the first attachment part  361 - 1  and  362 - 1  and the second attachment part  330 - 1  may be magnetic substances. A metal object to which a magnetic substance may be attached may be disposed within the first housing  210  and second housing  230  of the foldable electronic device. Furthermore, for example, the first attachment part  361 - 1  and  362 - 1  and the second attachment part  330 - 1  may be metal objects. A magnetic substance may be disposed within the first housing  210  and second housing  230  of the foldable electronic device. In some cases, the first attachment part  361 - 1  and  362 - 1  and the second attachment part  330 - 1  may be magnetic substances or metal objects. An object to which the first attachment part  361 - 1  and  362 - 1  may be attached may be disposed within the first housing  210 . An object to which the second attachment part  330 - 1  may be attached may be disposed within the second housing  230 . 
     According to various embodiments, the first attachment part  361 - 1  and  362 - 1  may include a first standing attachment part  361 - 1  and a second standing attachment part  362 - 1 . The first standing attachment part  361 - 1  may be disposed in the first support part  361 . The second standing attachment part  362 - 1  may be disposed in the second support part  362 . A coupling force of the first standing attachment part  361 - 1  and the foldable electronic device may be stronger than a coupling force of the second standing attachment part  362 - 1  and the foldable electronic device. For example, as illustrated in  FIG. 4 , the number of magnetic substances of the first standing attachment part  361 - 1  may be greater than the number of magnetic substances of the second standing attachment part  362 - 1 . In some cases, the coupling force of the first standing attachment part  361 - 1  may be made greater than the coupling force of the second standing attachment part  362 - 1  by making the area of the first standing attachment part  361 - 1  greater than the area of the second standing attachment part  362 - 1 . 
     The foldable keyboard cover may be attached to the rear of the foldable electronic device in order to protect the foldable electronic device against an external impact or prevent and/or reduce an external alien substance from approaching the foldable electronic device. For example, the first folding part  350  of the foldable keyboard cover may be disposed to cover the hinge part  250  of the foldable electronic device in order to improve the durability of the foldable electronic device by blocking an external alien substance from entering the hinge part  250  of the foldable electronic device. 
       FIG. 5  is a diagram illustrating the state in which the foldable electronic device and the foldable keyboard cover have been combined according to various embodiments. 
     According to various embodiments, the first folding part  350  of the foldable keyboard cover may be made of a material that is elastically deformed. As described above, the first cover  310  and the second cover  330  may be folded by rotating centering around a first folding axis (e.g., line A-A in  FIG. 5 ). 
     For example, a state unfolded as in  FIG. 5( a )  may change into a state folded as in  FIG. 5( b ) . The first folding part  350  may be elastically deformed in a direction (e.g., an X direction in  FIG. 5 ) perpendicular to the first folding axis. As the first folding part  350  is elastically deformed, the foldable keyboard cover may cover the entire foldable electronic device in the state completely folded as in  FIG. 5( b ) . The first cover  310  may completely cover the first housing  210 , and the second cover  330  may completely cover the second housing  230 . In a process of the first cover  310  and the second cover  330  being folded, the first folding part  350  may be elastically deformed in a direction (e.g., the X direction in  FIG. 5 ) perpendicular to the first folding part, so the first cover  310  and the second cover  330  may completely cover the first housing  210  and the second housing  230 . 
     Accordingly, even in the state in which the foldable keyboard cover has been completely folded as in  FIG. 5( b ) , the foldable keyboard cover can protect the entire external surface of the foldable electronic device. 
       FIG. 6A  is a cross-sectional view of the foldable keyboard cover according to various embodiments.  FIG. 6B  is a diagram illustrating an example in which the foldable keyboard cover is folded according to various embodiments. 
     According to various embodiments, a reinforcement member  620  may be disposed within the first folding part  350  of the foldable keyboard cover. The reinforcement member  620  permits the folding of the first cover  310  and the second cover  330 , but may pressurize the first cover  310  and the second cover  330  in a direction (e.g., an X direction in  FIG. 6A ) perpendicular to the first folding axis in the state in which the first cover  310  and the second cover  330  have been completely unfolded. The reinforcement member  620  can suppress a wrinkle phenomenon which may occur in the first folding part  350  in the state in which the foldable keyboard cover has been completely unfolded. In this case, the wrinkle phenomenon may refer, for example, to a phenomenon occurring due to a stress difference within the first folding part  350  in the states in which the foldable keyboard cover has been completely folded and unfolded. For example, tensile strength may act on the first folding part  350  in the state in which the foldable keyboard cover has been completely unfolded, and compression stress may occur in the first folding part  350  in the state in which the foldable keyboard cover has been completely folded. Due to such a stress difference, wrinkles may occur in the first folding part  350  in the state in which the foldable keyboard cover has been completely unfolded. The reinforcement member  620  can prevent and/or reduce such a wrinkle phenomenon of the first folding part  350 . 
     According to various embodiments, the reinforcement member  620  may be made of a material having high shape maintenance. The reinforcement member  620  having high shape maintenance can suppress the wrinkle phenomenon because the reinforcement member  620  has strong properties that a state of the reinforcement member  620  returns to an original state thereof. 
     According to various embodiments, as illustrated in  FIG. 6B , a second attachment part  630  of the second cover  330  may include a plurality of magnetic substances extending in a direction (e.g., an X direction in  FIG. 6B ) perpendicular to a first folding axis (e.g., line A-A in  FIG. 6B ). The second attachment parts  330 - 1  may be arranged at specified intervals in a direction (e.g., the Y direction in  FIG. 6B ) of the first folding axis. The second attachment part  330 - 1  may be magnetically combined with an attachment part  610  of the foldable electronic device. According to various embodiments, the attachment part  610  of the foldable electronic device may be circular metal having the same diameter as the width of the second attachment part  330 - 1 . 
     (a) of  FIG. 6B  is a diagram illustrating the state in which the foldable keyboard cover has been completely unfolded. (b) of  FIG. 6B  is a diagram illustrating the state in which the foldable keyboard cover has been folded at a specified angle. (c) of  FIG. 6B  is a diagram illustrating the state in which the foldable keyboard cover has been completely folded. If the first folding part  350  of the foldable keyboard cover is fabricated using a material not having a high degree of elastic deformation unlike the first folding part  350  illustrated in  FIG. 5 , the second cover  330  may slip over on a surface of the second housing  230  in a process of the foldable keyboard cover being folded. At this time, the attachment part  610  of the foldable electronic device may be moved in a direction in which the second attachment part  330 - 1  extends. As the attachment part  610  of the foldable electronic device is moved in the direction in which the second attachment part  330 - 1  extends, the slip of the second cover  330  for the second housing  230  may be guided. Although the second cover  330  slips over on a surface of the second housing  230  in a process of the foldable keyboard cover being folded, the second cover  330  may slip over in the state in which the end of the second cover  330  has been matched with the end of the second housing  230 . The second attachment part  330 - 1  may guide the slip of the second cover  330  for the second housing  230 , and thus can prevent or reduce a phenomenon in which the second cover  330  slips over in an oblique direction with respect to the second housing  230  in a process of the foldable keyboard cover being folded. 
     According to various embodiments, unlike in the case illustrated in  FIG. 6B , the attachment part of the foldable electronic device may be formed in a shape extending in a direction perpendicular to the first folding axis, and the second attachment part may be a circular magnetic substance having a diameter corresponding to the width of the attachment part of the foldable electronic device. 
     According to various embodiments, since the second cover  330  may slip over with respect to the second housing  230  in a process of the foldable keyboard cover being folded, a part of the second housing  230  may be exposed to the outside as in (c) of  FIG. 6B . According to an embodiment, the foldable electronic device may include an auxiliary display  280  in a portion through which a part of the second housing  230  is exposed by the slip of the second cover  330 . A user can check some information, such as the notification of the foldable electronic device, through the auxiliary display  280  even in the state in which the foldable keyboard cover has been completely folded. 
       FIGS. 7A and 7B  are diagrams illustrating an example process of the foldable keyboard cover standing according to various embodiments. 
     According to various embodiments, the cover stand  360  may include the first support part  361 , the second support part  362  and the second folding part  363 . The second folding part  363  may connect the first support part  361  and the second support part  362  in a way to be foldable. The first support part  361  and the second support part  362  may be folded centering around a second folding axis (e.g., line B-B in  FIGS. 7A and 7B ). The second folding axis may be a rotation axis elongating in a direction (e.g., the X direction in FIG.  7 A) perpendicular to the first folding axis. 
     In the state (a) of  FIGS. 7A and 7B , the second standing attachment part  362 - 1  of the second support part  362  may have a state attached to the second housing  230  of the foldable electronic device. When the first support part  361  and the second support part  362  start to be folded in a state such as a state (b) of  FIGS. 7A and 7B , the second standing attachment part  362 - 1  (refer to  FIG. 4 ) may be attached to and detached from the second housing  230  of the foldable electronic device. As described above with reference to  FIG. 4 , the coupling force of the first standing attachment part  361 - 1  and the second housing  230  may be stronger than the coupling force of the second standing attachment part  362 - 1  and the second housing  230 . In a process of the first support part  361  and the second support part  362  being folded, the first standing attachment part  361 - 1  maintains the state continuously attached to the second housing  230 , and the second standing attachment part  362 - 1  may be relatively easily attached to and detached from the second housing  230 . 
     As in (c) of  FIGS. 7A and 7B , the first support part  361  and the second support part  362  may be folded until one surface of the foldable electronic device is supported by the stand support part  340 . According to various embodiments, the stand support part  340  may have a protrusion shape elongated in a direction (e.g., the X direction in  FIG. 7A ) perpendicular to the first folding axis and protruded in the direction in which the physical keyboard  320  is disposed. 
     Since the first support part  361  supports the second housing  230  of the foldable electronic device in the state in which the first support part  361  and the second support part  362  have been folded at a specified angle, the cover stand  360  supports the rear of the foldable electronic device and the stand support part  340  supports the front of the foldable electronic device. Accordingly, the foldable electronic device and the foldable keyboard cover may be maintained in the state in which the foldable electronic device and the foldable keyboard cover form a specified angle. 
     In the foldable keyboard cover according to various embodiments, the cover stand  360  may be disposed only at a location corresponding to the first cover  310 . As described above, the first support part  361  and second support part  362  of the foldable keyboard cover may be formed to corresponding to an area of the first cover  310 . A thickness in the state in which the foldable keyboard cover has been completely folded can be minimized or reduced because the cover stand  360  is disposed only in the first cover  310  corresponding to only one side of the foldable keyboard cover. According to various embodiments, the cover stand  360  may also be disposed at a location corresponding to the second cover  330  in addition to the first cover  310 . 
     According to various embodiments, the physical keyboard  320  of the foldable keyboard cover may have a standby state and an active state. The standby state may refer, for example, to a state in which the physical keyboard  320  has been deactivated. In this state, an input to the physical keyboard  320  may be ignored. The active state may refer, for example, to a state in which the physical keyboard  320  has been activated. In this state, an input to the physical keyboard  320  may be transmitted to the foldable electronic device. The standby state and active state of the physical keyboard  320  may be changed through various methods. For example, a state of the physical keyboard  320  may switch from the standby state to the active state based on a trigger that the second support part  362  of the cover stand  360  is detached from the foldable electronic device. When the second attachment part  330 - 1  (refer to  FIG. 4 ) of the second support part  362  is detached from the second housing  230 , a state of the physical keyboard  320  may switch to the active state. When the second attachment part  330 - 1  is attached to the second housing  230 , a state of the physical keyboard  320  may switch to the standby state. Furthermore, for example, a state of the physical keyboard  320  may switch to the active state in response to an activation command from the foldable electronic device. Furthermore, for example, a state of the physical keyboard  320  may switch from the standby state to the active state based on a trigger that one surface of the foldable electronic device comes into contact with the stand support part  340 . A contact between the stand support part  340  and the foldable electronic device may be detected through a sensor disposed in a portion of the foldable electronic device, which comes into contact with the stand support part  340 . In some cases, a sensor disposed in the stand support part  340  may detect a contact between the foldable electronic device and the stand support part  340 . 
     In addition, a state of the physical keyboard  320  may switch from the standby state to the active state through various triggers. As described above, the physical keyboard  320  having the standby state and the active state can minimize and/or reduce battery consumption when not used. 
       FIGS. 8A and 8B  are diagrams illustrating example adjustment of a standing angle of the foldable electronic device through the foldable keyboard cover according to various embodiments. 
     According to various embodiments, as illustrated in  FIG. 8A , a stand support part  810  may include at least one protrusion shape protruded with respect to the foldable keyboard cover. The stand support part  810  may be provided in plural, and may be arranged at specified intervals in an X direction in  FIG. 8A . An angle between the foldable electronic device and the foldable keyboard cover may be adjusted based on a selected stand support part  810  of the plurality of stand support parts  810 . For example, if a stand support part  810 - 1  supports the foldable electronic device as in (a) of  FIG. 8A , an angle between the foldable electronic device and the foldable keyboard cover may become θ 1 . If a stand support part  810 - 2  supports the foldable electronic device as in (b) of  FIG. 8A , an angle between the foldable electronic device and the foldable keyboard cover may become θ 2 . If a stand support part  810 - 3  supports the foldable electronic device as in (c) of  FIG. 8A , an angle between the foldable electronic device and the foldable keyboard cover may become θ 3 . Since θ 1 &lt;θ 2 &lt;θ 3 , a standing angle of the foldable electronic device may be most gentle in the state of (a) of  FIG. 8A , and a standing angle of the foldable electronic device may be the steepest in the state of (c) of  FIG. 8A . A user may adjust the standing angle of the foldable electronic device depending on his or her convenience. 
     According to various embodiments, as illustrated in  FIG. 8B , a stand support part  830  may include a non-slip pad formed in at least a part of the foldable keyboard cover. The non-slip pad may come into contact with one surface of the foldable electronic device and support the foldable electronic device by preventing and/or reducing the slip of the foldable electronic device. A standing angle of the foldable electronic device may be continuously adjusted in the section in which the stand support part  830  has been formed. For example, if the stand support part  830  supports the foldable electronic device at a point such as (a) of  FIG. 8B , an angle between the foldable electronic device and the foldable keyboard cover may become θ 1 . If the stand support part  830  supports the foldable electronic device at a point such as (b) of  FIG. 8B , an angle between the foldable electronic device and the foldable keyboard cover may become θ 2 . If the stand support part  830  supports the foldable electronic device at a point such as (c) of  FIG. 8B , an angle between the foldable electronic device and the foldable keyboard cover may become θ 3 . Since θ 1 &lt;θ 2 &lt;θ 3 , the standing angle of the foldable electronic device may be most gentle in the case of (a) of  FIG. 8B , and the standing angle of the foldable electronic device may be the steepest in the state of (c) of  FIG. 8B . A user may adjust the standing angle of the foldable electronic device depending on his or her convenience. 
     A foldable keyboard cover configured to be attached to an electronic device comprising a first housing and a second housing connected to be foldable by a hinge part according to various example embodiments of the disclosure includes: a first cover configured to face the first housing of the electronic device and including a first attachment part configured to be attached to the first housing, a second cover configured to face the second housing of the electronic device and including a second attachment part configured to be attached to the second housing, a first folding part configured to face the hinge part of the electronic device and to connect the first cover and the second cover to be foldable about a first folding axis, and a physical keyboard including a first keyboard disposed in at least some area of the first cover and a second keyboard disposed in at least some area of the second cover. The first folding part may comprise a material having an elastic force wherein the first cover and the second cover are configured to cover the first housing and the second housing in a state in which the first housing of the electronic device and the second housing are folded. 
     Furthermore, the first folding part may be configured to be elastically deformed in a direction perpendicular to the first folding axis. 
     Furthermore, the foldable keyboard cover may further include a cover stand configured to support the electronic device at a specified angle with respect to the first cover and the second cover. 
     Furthermore, the cover stand may include a first support part disposed to correspond to at least some area of the first cover, a second support part connected to the first cover, and a second folding part configured to connect the first support part and the second support part to be foldable about a second folding axis perpendicular to the first folding axis. The first attachment part of the first cover may include a first standing attachment part disposed in the first support part of the cover stand and configured to be attached to at least some area of the first housing of the electronic device and a second standing attachment part disposed in the second support part of the cover stand and configured to be attached to at least some area of the first housing of the electronic device. 
     Furthermore, the first standing attachment part may be configured to be attached to the electronic device with an attachment force stronger than an attachment force of second standing attachment part to the electronic device. 
     Furthermore, the first support part of the cover stand may be configured to be disposed to cover a first keyboard of the physical keyboard. 
     Furthermore, the foldable keyboard cover may further include a stand support part formed in some area of at least one of the first cover and the second cover wherein the foldable keyboard cover is configured to be fixed in a state in which the electronic device forms a specified angle with the first cover and the second cover. 
     Furthermore, the stand support part may have a protrusion shape elongated in a direction perpendicular to the first folding axis in the electronic device, the first cover and the second cover and protruding and formed in a direction in which the physical keyboard is disposed in the first cover and the second cover. 
     Furthermore, the stand support parts may be disposed at specified intervals in the direction of the first folding axis so that an angle formed by the electronic device, and the first cover and the second cover is changed. 
     Furthermore, the stand support part may comprise a non-slip pad formed in at least some area of the first cover and the second cover. 
     A foldable keyboard cover configured to be attached to an electronic device in which a first housing and a second housing are connected to be foldable by a hinge part according to various example embodiments includes: a first cover configured to face the first housing of the electronic device and including a first attachment part configured to be attached to the first housing, a second cover configured to face the second housing of the electronic device and including a second attachment part configured to be attached to the second housing, a first folding part configured to face the hinge part of the electronic device and to connect the first cover and the second cover to be foldable about a first folding axis, and a physical keyboard including a first keyboard disposed in at least some area of the first cover and a second keyboard disposed in at least some area of the second cover. The first attachment part of the first cover and the second attachment part of the second cover may be configured to be attached to the first housing and second housing of the electronic device on a surface opposite to a surface on which a display of the electronic device is disposed. 
     Furthermore, the first folding part may further include a reinforcement member comprising an elastic material configured to permit folding of the first cover and the second cover, and pressurizing the first cover and the second cover in a direction perpendicular to the first folding axis in the state in which the first cover and the second cover are unfolded. 
     Furthermore, the second attachment part of the second cover may be elongated and formed in a direction perpendicular to the first folding axis wherein the second cover is configured to slip over the second housing in the state in which the end of the second cover has been matched with the end of the second housing of the electronic device based on the first cover and the second cover being folded or unfolded about the first folding axis, and the second attachment parts are arranged at specified intervals in the direction of the first folding axis. 
     Furthermore, the foldable keyboard cover may further include a cover stand configured to support the electronic device at a specified angle with respect to the first cover and the second cover. 
     Furthermore, the cover stand may include a first support part disposed to correspond to at least some area of the first cover, a second support part connected to the first cover, and a second folding part configured to connect the first support part and the second support part to be foldable about a second folding axis perpendicular to the first folding axis. The first attachment part of the first cover may include a first standing attachment part disposed in the first support part of the cover stand and configured to be attached to at least some area of the first housing of the electronic device and a second standing attachment part disposed in the second support part of the cover stand and configured to be attached to at least some area of the first housing of the electronic device. 
     Furthermore, the first standing attachment part may be configured to be attached to the electronic device with an attachment force stronger than an attachment force attaching the second standing attachment part to the electronic device. 
     Furthermore, the foldable keyboard cover may further include a stand support part formed in some area of at least one of the first cover and the second cover wherein the foldable keyboard cover is configured to form a specified angle along with the first cover and the second cover. 
     Furthermore, the stand support part may have a protrusion shape elongated in a direction perpendicular to the first folding axis in the electronic device, the first cover and the second cover and protruding and formed in a direction in which the physical keyboard is disposed in the first cover and the second cover. 
     Furthermore, the stand support parts may be disposed at specified intervals in the direction of the first folding axis so that an angle formed by the electronic device, and the first cover and the second cover is changed. 
     Furthermore, the stand support part may comprise a non-slip pad formed in at least some area of the first cover and the second cover. 
     While the disclosure has been illustrated and described with reference to various example embodiments, it will be understood that the various example embodiments are intended to be illustrative, not limiting. It will be further understood by those skilled in the art that various changes in form and detail may be made without departing from the true spirit and full scope of the disclosure, including the appended claims and their equivalents. It will also be understood that any of the embodiment(s) described herein may be used in conjunction with any other embodiment(s) described herein.